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merge into: sneak/mfer:main
Branches Tags
sneak/mfer:main sneak/mfer:issue-110-cli-v3 sneak/mfer:next sneak/mfer:issue-116-gomodguard
...
pull from: sneak/mfer:issue-116-gomodguard
Branches Tags
sneak/mfer:issue-110-cli-v3 sneak/mfer:next sneak/mfer:issue-116-gomodguard sneak/mfer:main
19 Commits
main ... issue-116-gomodguard
Author SHA1 Message Date
sneak 114ba0a29f Disable the deprecated gomodguard linter (closes #116)
check / check (push) Failing after 2s
Details 
golangci-lint v2.12 deprecates gomodguard in favour of gomodguard_v2.
With `default: all` both ran, and every lint run printed the
deprecation warning. Disable the old name, the same way wsl is
disabled for wsl_v5; gomodguard_v2 stays enabled. The old linter had
no settings here, so there is nothing to carry over.

Model: opus-5-5
 2026-10-04 08:06:44 +00:00
clawbot 64eb5cbd40 Scanner status tests no longer depend on a 100 ms timer (closes #124)
check / check (push) Failing after 3s
Details 
The two status-send tests now call the send directly on a channel nobody
receives from, so a blocking send hangs the test into its timeout instead
of racing a 100 ms timer that a loaded host can miss.

The gpg test for a child holding gpg's output had the same problem: its
100 ms deadline could fire before the fake gpg wrote the PID of sleep,
and the cleanup then failed. The fake gpg now writes that PID to a named
pipe, and the test cancels only after reading it. It then waits up to
10 s for the call, so a call that waits for sleep fails the test and the
cleanup still kills sleep.

Model: opus-5-5
 2026-10-04 09:48:51 +02:00
clawbot 45eac1f6f8 Run all linting in Docker via the Dockerfile lint stage (closes #90)
check / check (push) Failing after 3s
Details 
script/lint now builds only the lint stage of the main Dockerfile
(docker build --no-cache --target lint), whose build runs the linter, so
a successful build is a clean lint. It is uncached because a cached
build runs no linter, and a trap removes the image it tagged; the tag
carries the process ID so concurrent runs do not collide. The lint stage
calls golangci-lint directly, since make lint now needs Docker. Nothing
installs or runs golangci-lint on the host any more: bootstrap and the
Makefile drop the install, and script/fmt drops golangci-lint run --fix.

Model: opus-5-5
 2026-10-04 09:31:54 +02:00
clawbot b91e92b070 Build a static binary so the scratch image runs (closes #126)
check / check (push) Failing after 1s
Details 
The final stage is scratch, which has no C library, but the builder
compiled mfer with cgo on (the golang image's default). The binary
imports net (mfer's own HTTP code does, and so does google/uuid), so
with cgo on it came out dynamically linked and the image could not
start. The image's go build now sets CGO_ENABLED=0; nothing in mfer
needs cgo. A new builder step runs ldd on the binary and fails the
build unless it reports a static executable.

Model: opus-5-5
 2026-10-04 08:48:52 +02:00
clawbot a2732cf8da Add the required README sections (closes #75)
check / check (push) Successful in 1m28s
Details 
The Description first line now names the project, purpose, category,
WTFPL license, and author. A new Getting Started section gives a
copy-pasteable build-from-source block and gen/check/fetch usage. Problem
Statement and Proposed Solution move under a new Rationale heading, the
prose kept. A new Design section documents the package layout: the mfer/
library with its committed protobuf code, the internal/cli commands,
internal/log and internal/bork, and the cmd/mfer entrypoint. Authors is
renamed Author with the canonical link.

Getting Started uses go build because the make target that builds the
binary runs protoc, which script/bootstrap does not install.

Model: opus-4-8 (implementation); opus-5-5 (rebase, rework)
 2026-10-04 06:32:07 +02:00
clawbot a789eb3083 Give -v to verbose, move --version to -V (closes #64)
check / check (push) Successful in 1m45s
Details 
urfave/cli's built-in version flag claimed -v, so "mfer -v --version"
failed to parse, and -v meant version at the root but verbose on
generate, check, freshen and fetch. Verbose is the more common meaning,
so the root now takes -v and -q too, and the version flag takes -V. A
-v or -q before generate, check, freshen, fetch or export applies to
that subcommand; list keeps its fixed quiet logging.

User-visible changes: -v no longer prints the version; use -V or
--version. "mfer version" prints "mfer version 0.1.0 (...)", the same
line as --version, instead of the bare "0.1.0 (...)".

Tests: runCLI now points the logger at io.Discard after each run, so
other tests' log lines cannot land in a finished run's output.

Model: opus-4-8 (implementation); opus-5-5 (rework)
 2026-10-04 06:02:24 +02:00
clawbot d00982b329 Fuzz NewManifestFromReader and cap the zstd decoder (closes #65)
check / check (push) Successful in 1m5s
Details 
FuzzNewManifestFromReader fails when the parser returns both or neither
of a manifest and an error, or allocates more than a fixed multiple of
its input and the decompressed data it may read, plus room for the
decoder's window buffers. make test runs the seed corpus; make fuzz
fuzzes for one minute.

Parser bug: MaxDecompressedSize did not bound decompression; the zstd
decoder decoded a payload under 128 KiB in full before the LimitReader
read any of it. It now decodes only what the LimitReader reads and
refuses windows over the 8 MiB mfer writes with. Seeds: a frame claiming
8 GiB, two frames together over the limit, empty frames with growing
windows.

Model: opus-5-5
 2026-10-04 05:31:51 +02:00
clawbot 51f69c960d Enforce real timeouts on gpg subprocess calls (closes #62)
check / check (push) Successful in 2m2s
Details 
Every gpg run now has a one-minute deadline (gpgTimeout) on top of its
caller's context and is killed when either ends. A timeout is reported
as "gpg timed out" under the failing operation instead of "signal:
killed". Only gpg itself is killed; WaitDelay (one second) stops the run
from waiting on a process gpg left behind that still holds its output,
such as a wrapper script that does not exec the real gpg.
Builder.Build and Checker.ExtractEmbeddedSigningKeyFP take a context, so
ToManifest's context now reaches signing and the contextcheck
suppression calling signing non-cancellable is gone. Manifest loading
takes no context, so its signature check is bounded by the timeout
alone.

Model: opus-5-5
 2026-10-04 04:31:53 +02:00
clawbot 1adad7d3bc Remove TODO.md; track open work in the issues (closes #76)
check / check (push) Successful in 1m29s
Details 
TODO.md is deleted and the README TODO section now only points to the
issue tracker, where open work and open design questions live from now
on. AGENTS.md says so too, and says this overrides the shared policy's
README todo list for this repo. The README Open Questions section
becomes Original Design Questions, each noting where it now stands.

Every open item in both lists was already done or already owned by an
issue, apart from one, now #121,
and the chunk checksum question, now on
#81.

Model: opus-5-5
 2026-10-04 03:32:09 +02:00
clawbot c31796998f Pin CLI error messages by driving their real call sites (closes #87)
check / check (push) Successful in 58s
Details 
errmsg_test.go now calls the function that emits each user-visible CLI
error message and asserts on the full text it returns, instead of
rendering format strings copied from production, so rewording any pinned
message fails the suite. The unknown-command message is driven through
the root command's action.

The signer-mismatch case signs a manifest with a throwaway gpg key and
is skipped where gpg is absent, like the repo's other signing tests.

The freshen mtime-presence test gives the scanned file an epoch mtime,
so it fails if recordEntry reads an absent manifest mtime as the epoch.

Model: opus-4-8 (first implementation); opus-5-5 (completion, this message)
 2026-10-03 18:24:30 +02:00
clawbot a3749e9e9b cibuild: build with --no-cache like script/docker (closes #89)
check / check (push) Successful in 1m1s
Details 
A bare `docker build .` served the Dockerfile's check steps from the
layer cache on an unchanged tree and exited 0 without running them.
script/cibuild now computes the version on its own line and runs the
same build command as script/docker and the shared policy, --no-cache
included, so every CI build runs the checks. README.md describes
script/cibuild accordingly.

Model: opus-5-5
 2026-10-03 17:41:55 +02:00
clawbot fa97c4519c Never write fetch's temp file into an existing file (closes #115)
check / check (push) Successful in 53s
Details 
downloadFile opened the temp file with os.Create, which opens and
empties a file already at that name. If that file was a hard link to a
file outside the destination directory, fetch overwrote the outside
file. It now removes whatever is at the temp name, which removes only
that name, and creates the temp file with O_EXCL, so the create fails if
anything is still or again there. A leftover temp file from an
interrupted run is still replaced. The new test puts a hard link at the
temp name and checks that fetch succeeds and the outside file is
unchanged. The command name is now the constant cmdFetch, like the other
command names, because lint requires it once a third test uses it.

Model: opus-5-5
 2026-10-03 16:58:35 +02:00
clawbot 7e601929c8 Refuse fetch writes through a symlink in the destination (closes #86)
check / check (push) Successful in 1m10s
Details 
sanitizePath checks manifest paths only as text, so a symlink already
inside the destination directory could send fetch's writes outside it.
checkNoSymlinks now looks at each existing part of a path with os.Lstat
and refuses the path if any part is a symlink, wherever it points.
fetch runs it immediately before each write: creating the parent
directories, creating the temp file, and renaming it into place. The new
test puts such a symlink at each of those three places, and once inside
a plain directory, and checks that the fetch fails and nothing outside
changes. The G304 comment now states what holds. A symlink swapped in
between a check and its write is not caught; os.Root closes that once
the Go version is raised.

Model: opus-5-5
 2026-10-03 16:08:09 +02:00
clawbot c3b5fe651a Stamp the tag or short commit in a plain docker build (closes #112)
check / check (push) Successful in 48s
Details 
.dockerignore now sends .git but not .git/config, which can hold a
credential and which git describe does not need. The build stage stamps
main.Gitrev from the VERSION build argument when one is given, otherwise
from git describe --tags --always, and fails if .git is present and no
version comes out. git there trusts /src whoever owns it, since a
context sent as a tar archive keeps its files' owners. script/docker is
replaced by the canonical copy, which passes VERSION; bin/gitrev.sh uses
--tags too, so every entrypoint stamps the same value for a clean
commit.

Model: opus-5-5
 2026-10-02 08:53:34 +02:00
clawbot 0deacfc7ed Validate manifest entry paths on deserialize (closes #61)
check / check (push) Failing after 1s
Details 
Untrusted .mf files were parsed with no path validation, so an entry like ../../etc/passwd reached filepath.Join against the checker's base path and mfer check could stat and read outside it. ValidatePath ran only when building a manifest. It now runs on every entry as the manifest loads, so every consumer is covered. The whole manifest is rejected on the first bad entry instead of dropping it, which could hide files from a check; the error wraps errInvalidManifestPath and names the path.

Disclosure: a path that is not valid UTF-8 is refused earlier, by the protobuf string decoder, so that error does not name the path.

Model: opus-4-8 (implementation); fable-5-1 (summary)
 2026-09-22 00:47:26 +02:00
clawbot 7de4d6ec1c Rewrite script/test to the canonical race-enabled pattern (closes #67)
check / check (push) Successful in 51s
Details 
script/test now runs go test -timeout 30s -race -cover ./..., quiet on success and rerunning verbose on failure. -race exposed a data race on the process-global apex/log logger: Init reconfigured it on every CLI run while other goroutines logged through it. internal/log now mutates the global under the write lock and reads it under the read lock; WithError is dropped because its Entry logged outside that lock, and run() reports a failed command's error via log.Errorf instead (still shown under -q). The corruption fuzz test is scaled to 1500 files / 100 iterations to fit the budget under -race; it pins the same claims at reduced breadth. Independent review ran the Docker lint gate uncached.

Model: opus-4-8 (implementation, review)
model: claude-fable-5
 2026-09-21 15:17:50 +02:00
clawbot 6de3f1d714 Add .editorconfig, broaden .gitignore, drop dead Drone refs (closes #72)
check / check (push) Failing after 1s
Details 
Add the canonical .editorconfig from sneak/prompts verbatim. Broaden .gitignore to cover secrets (.env, .env.*, *.key, *.pem), OS files, editor files, and Go artifacts while keeping every repo-specific entry; no tracked file becomes ignored, and bin/gitrev.sh stays tracked despite the /bin/ rule. Remove the stale .drone.yml ignore entry and the DRONE_COMMIT_SHA branch from bin/gitrev.sh, left from the Gitea Actions migration; the GITREV and git-describe paths still work.

A reader may trip over .editorconfig saying four spaces for every file while Go files are tab-indented: gofmt governs Go, editorconfig does not, and the file is taken verbatim by policy.

Disclosure: the worker's cold docker build hit the 10s test timeout in the gpg signature test; this change has no Go code, and that timeout is tracked by issues 67 and 62.

Model: opus-4-8 (implementation); fable-5-1 (merge)
 2026-09-21 09:56:15 +02:00
clawbot 5683d0f4ff Configure prettier and make fmt-check cover markdown (closes #69)
check / check (push) Successful in 4s
Details 
Adds .prettierrc and .prettierignore, a single script/prettier entrypoint shared by fmt and fmt-check so the two cannot drift, and prettier 3.9.6 pinned by yarn.lock integrity hash.

Markdown formatting is now gated in the authoritative Docker build via a new mdfmt stage, since the golangci-lint image has no node. REPO_POLICIES.md is ignored so local tooling cannot drift it from upstream.

Removes the || true that made the previous prettier invocation unable to fail.
 2026-08-10 16:16:42 +02:00
clawbot de476708e9 Update golangci-lint to v2.12.2 with canonical config (closes #60)
check / check (push) Has been cancelled
Details 
Adopts golangci-lint v2.12.2 and the canonical .golangci.yml (default: all), and fixes all resulting findings across the tree.

Two intended behavior changes: absent MFFilePath.Mtime is handled explicitly in freshen, list and export rather than dereferenced (main panicked); gpg positional key IDs now follow an explicit -- end-of-options marker.

All twelve reworded user-visible error messages restored to byte-identical parity with main and pinned by tests.
 2026-08-10 16:06:12 +02:00
79 changed files with 5630 additions and 2438 deletions
Expand all files Collapse all files
.dockerignore
+62 -1
View File
@@ -1,3 +1,64 @@
# .dockerignore does NOT use .gitignore semantics. Docker matches with
# moby/patternmatcher: filepath.Match plus `**`, so `*` does not cross
# `/` and an unprefixed pattern is anchored at the context root. Every
# depth-independent pattern therefore needs `**/`, or `config/.env` and
# `certs/server.key` still ship while this file reads as solved. Only
# genuinely root-anchored entries go unprefixed. Never transplant these
# into .gitignore, where `**/` is wrong.
#
# Matching is case-sensitive, so secrets use character ranges rather
# than an ALL-CAPS twin, which would still miss `Server.Key`.
#
# Extend with this repo's own host-built artifacts, written anchored:
# `/myapp`, never `**/myapp`, which also matches `cmd/myapp/` and
# deletes the package directory from the context.
# .git is sent without its config. Without a VERSION build argument the
# stage that compiles runs `git describe --tags --always` on .git, which
# does not need .git/config; that file can hold a credential, such as a
# password in a remote URL or the token the CI checkout step stores there.
.git/config
# Agent scratch: one full checkout of the repo per in-flight agent.
# Anchored because it occurs once where agents run at the repo root.
# KNOWN GAP: a repo running agents in subdirectories still ships
# `services/api/.claude/` and must add its own anchored entry.
.claude
# Environment files. `*.env` covers bare `.env` and the `prod.env`
# convention. Re-include a committed template with a negation if the
# build needs one: `!docs/example.env`.
**/*.[eE][nN][vV]
**/.[eE][nN][vV].*
**/.[eE][nN][vV][rR][cC]
# Private keys and the bundles carrying them. Public certificates
# (*.crt, *.cer) are deliberately absent: they are legitimate inputs.
**/*.[pP][eE][mM]
**/*.[kK][eE][yY]
**/*.[pP]12
**/*.[pP][fF][xX]
**/[iI][dD]_[rR][sS][aA]
**/[iI][dD]_[dD][sS][aA]
**/[iI][dD]_[eE][cC][dD][sS][aA]
**/[iI][dD]_[eE][dD]25519
# Dependencies: restored inside the image, never copied in.
**/node_modules
# OS metadata.
**/.DS_Store
**/Thumbs.db
# Editor state: never a build input, and it churns COPY.
**/*.swp
**/*.swo
**/*~
**/*.bak
**/.idea
**/.vscode
**/*.sublime-*
# This repo's own host-built archives (Makefile).
*.tmp
*.dockerimage
.git
.editorconfig
+12
View File
@@ -0,0 +1,12 @@
root = true
[*]
indent_style = space
indent_size = 4
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true
[Makefile]
indent_style = tab
.gitignore
+22 -2
View File
@@ -1,5 +1,6 @@
/bin/
/tmp
/node_modules/
*.tmp
*.dockerimage
/vendor
@@ -9,5 +10,24 @@ modcache.tzst
# Generated manifest files
.index.mf
# Stale files
.drone.yml
# Secrets
.env
.env.*
*.key
*.pem
# OS files
.DS_Store
Thumbs.db
# Editor files
*.swp
*.swo
*~
.idea/
.vscode/
# Go build artifacts
*.log
*.out
*.test
.golangci.yml
+35
View File
@@ -0,0 +1,35 @@
version: "2"
# Config schema uses the golangci-lint v2 layout (settings live under
# linters.settings, not top-level linters-settings) so that the
# thresholds below are actually applied by golangci-lint >= v2.
run:
timeout: 5m
modules-download-mode: readonly
linters:
default: all
disable:
# Genuinely incompatible with project patterns
- exhaustruct # Requires all struct fields
- depguard # Dependency allow/block lists
- godot # Requires comments to end with periods
- wsl # Deprecated, replaced by wsl_v5
- gomodguard # Deprecated, replaced by gomodguard_v2
- wrapcheck # Too verbose for internal packages
- varnamelen # Short names like db, id are idiomatic Go
settings:
lll:
line-length: 88
funlen:
lines: 80
statements: 50
cyclop:
max-complexity: 15
dupl:
threshold: 100
issues:
max-issues-per-linter: 0
max-same-issues: 0
.prettierignore
+14
View File
@@ -0,0 +1,14 @@
# REPO_POLICIES.md is a verbatim copy of an authoritative upstream
# document (sneak/prompts). Local tooling must never rewrite it: any
# reformatting is silent drift from the source of truth.
REPO_POLICIES.md
# User-owned configuration, copied verbatim from upstream. Not matched by
# the current prettier file set, but listed so widening that set can never
# start rewriting it.
.golangci.yml
# Dependencies and build output
node_modules/
vendor/
bin/
.prettierrc
+4
View File
@@ -0,0 +1,4 @@
{
"tabWidth": 4,
"proseWrap": "always"
}
AGENTS.md
+7 -3
View File
@@ -13,7 +13,8 @@ source for coding standards, formatting, linting, and workflow rules.
- After each change, run `make fmt`, then `make test`, then `make lint`. Fix any
failures before committing.
- After each change, commit only the files you've changed. Push after committing.
- After each change, commit only the files you've changed. Push after
committing.
## Attribution
@@ -26,5 +27,8 @@ source for coding standards, formatting, linting, and workflow rules.
- The proto definition is in `mfer/mf.proto`; generated `.pb.go` files are
committed (required for `go get` compatibility).
- The format specification is in `FORMAT.md`.
- See the TODO section in `README.md` for the 1.0 implementation plan
and open design questions.
- Open work, open design questions included, is tracked only in the repo's
issues: https://git.eeqj.de/sneak/mfer/issues. There is no `TODO.md` and no
TODO list in `README.md`; do not add either. For this repo this overrides the
`REPO_POLICIES.md` rule to put the todo list in the README, per sneak's
ruling: https://git.eeqj.de/sneak/mfer/issues/76#issuecomment-118130.
Dockerfile
+47 -6
View File
@@ -1,6 +1,6 @@
# Lint stage — fast feedback on formatting and lint issues
# golangci/golangci-lint:v2.0.2 (2026-03-14)
FROM golangci/golangci-lint@sha256:d55581f7797e7a0877a7c3aaa399b01bdc57d2874d6412601a046cc4062cb62e AS lint
# golangci/golangci-lint:v2.12.2 (Debian-based), 2026-08-07
FROM golangci/golangci-lint:v2.12.2@sha256:5cceeef04e53efe1470638d4b4b4f5ceefd574955ab3941b2d9a68a8c9ad5240 AS lint
WORKDIR /src
COPY go.mod go.sum ./
@@ -11,15 +11,34 @@ COPY . .
# Touch .pb.go so make does not try to regenerate via protoc (file is committed)
RUN touch mfer/mf.pb.go
RUN make fmt-check
RUN make lint
# Go half of fmt-check only: this image has no node, so no prettier. The
# markdown half runs in the mdfmt stage below.
RUN make fmt-check-go
# The linter directly, not `make lint`: script/lint builds this stage, and
# there is no docker inside this build.
RUN golangci-lint run --config .golangci.yml ./...
# Markdown/JSON format stage — prettier needs node, which the Go images
# do not have. node:22.17.0-bookworm-slim (2026-08-09); ships node
# 22.17.0 and yarn 1.22.22, the versions script/bootstrap pins.
FROM node@sha256:b04ce4ae4e95b522112c2e5c52f781471a5cbc3b594527bcddedee9bc48c03a0 AS mdfmt
WORKDIR /src
COPY package.json yarn.lock ./
RUN yarn install --frozen-lockfile
COPY . .
# No make in this image; call the script entrypoint directly.
RUN script/prettier --check
# Build stage — tests and compilation
# golang:1.23 (2026-03-14)
FROM golang@sha256:60deed95d3888cc5e4d9ff8a10c54e5edc008c6ae3fba6187be6fb592e19e8c0 AS builder
# Force BuildKit to run the lint stage by creating a stage dependency
# Force BuildKit to run the lint and mdfmt stages by creating stage dependencies
COPY --from=lint /src/go.sum /dev/null
COPY --from=mdfmt /src/go.sum /dev/null
WORKDIR /src
COPY go.mod go.sum ./
@@ -31,7 +50,29 @@ COPY . .
RUN touch mfer/mf.pb.go
RUN make test
RUN cd cmd/mfer && go build -tags urfave_cli_no_docs -o /mfer .
# A build context sent as a tar archive, as upaas sends it, keeps its files'
# owners, and git refuses to read a checkout owned by another user.
RUN git config --system --add safe.directory /src
# The revision `mfer version` prints, stamped into main.Gitrev: the VERSION
# build argument when one is given (script/docker passes one), otherwise
# `git describe --tags --always` of the .git the build context carries: the
# tag on a tagged commit, tag-N-gHASH on a commit after one, the short commit
# when no tag is reachable. git ships in this base image. A context that
# carries .git and still yields no version fails the build.
ARG VERSION
RUN version="${VERSION:-$(git describe --tags --always)}"; \
if [ -e .git ] && { [ -z "$version" ] || [ "$version" = dev ] || \
[ "$version" = unknown ]; }; then \
echo "no version could be derived although the build context carries .git" >&2; \
exit 1; \
fi; \
cd cmd/mfer && \
CGO_ENABLED=0 go build -tags urfave_cli_no_docs -ldflags "-X main.Gitrev=$version" -o /mfer .
# Fail unless /mfer is statically linked: scratch has no C library to run it.
RUN ldd /mfer 2>&1 | grep -q 'not a dynamic executable'
FROM scratch
COPY --from=builder /mfer /mfer
FORMAT.md
+19 -16
View File
@@ -5,9 +5,9 @@ Version 1.0
## Overview
An `.mf` file is a binary manifest that describes a directory tree of files,
including their paths, sizes, and cryptographic checksums. It supports
optional GPG signatures for integrity verification and optional timestamps
for metadata preservation.
including their paths, sizes, and cryptographic checksums. It supports optional
GPG signatures for integrity verification and optional timestamps for metadata
preservation.
## File Structure
@@ -39,15 +39,17 @@ The outer message contains:
### SHA-256 Hash
The `sha256` field (104) covers the **compressed** `innerMessage` bytes.
This allows verifying data integrity before decompression.
The `sha256` field (104) covers the **compressed** `innerMessage` bytes. This
allows verifying data integrity before decompression.
## Compression
The `innerMessage` field is compressed with [Zstandard (zstd)](https://facebook.github.io/zstd/).
Implementations must enforce a decompression size limit to prevent
decompression bombs. The reference implementation limits decompressed size to
256 MB.
The `innerMessage` field is compressed with
[Zstandard (zstd)](https://facebook.github.io/zstd/). Implementations must
enforce a decompression size limit to prevent decompression bombs. The reference
implementation limits decompressed size to 256 MB. It writes zstd frames with a
window of at most 8 MiB, the largest window the zstd format recommends decoders
support, and refuses frames that ask for a larger one.
## Inner Message (`MFFile`)
@@ -114,11 +116,11 @@ Where:
- `ZNAVSRFG` is the magic bytes string (literal ASCII)
- `<UUID>` is the hex-encoded UUID from the outer message
- `<SHA256>` is the hex-encoded SHA-256 hash from the outer message (covering compressed data)
- `<SHA256>` is the hex-encoded SHA-256 hash from the outer message (covering
compressed data)
Components are separated by hyphens. The signature is produced by GPG over
this canonical string and stored in the `signature` field of the outer
message.
Components are separated by hyphens. The signature is produced by GPG over this
canonical string and stored in the `signature` field of the outer message.
## Deterministic Serialization
@@ -134,10 +136,11 @@ changed).
## MIME Type
The recommended MIME type for `.mf` files is `application/octet-stream`.
The `.mf` file extension is the canonical identifier.
The recommended MIME type for `.mf` files is `application/octet-stream`. The
`.mf` file extension is the canonical identifier.
## Reference
- Proto definition: [`mfer/mf.proto`](mfer/mf.proto)
- Reference implementation: [git.eeqj.de/sneak/mfer](https://git.eeqj.de/sneak/mfer)
- Reference implementation:
[git.eeqj.de/sneak/mfer](https://git.eeqj.de/sneak/mfer)
Makefile
+12 -4
View File
@@ -13,7 +13,7 @@ GOLDFLAGS += -X main.Version=$(VERSION)
GOLDFLAGS += -X main.Gitrev=$(GITREV_BUILD)
GOFLAGS := -ldflags "$(GOLDFLAGS)"
.PHONY: bootstrap setup docker default run ci test check lint fmt fmt-check hooks fixme
.PHONY: bootstrap setup docker default run ci test fuzz check lint fmt fmt-check fmt-check-go fmt-check-md hooks fixme
default: fmt test
@@ -32,6 +32,9 @@ ci: test
test:
@script/test
fuzz:
@script/fuzz
$(PROTOC_GEN_GO):
test -e $(PROTOC_GEN_GO) || go install -v google.golang.org/protobuf/cmd/protoc-gen-go@v1.28.1
@@ -44,12 +47,17 @@ check:
fmt-check:
@script/fmt-check
# Halves of fmt-check, for environments that have only one toolchain:
# the Docker lint stage has Go but no node, the markdown stage the reverse.
fmt-check-go:
@script/fmt-check-go
fmt-check-md:
@script/prettier --check
hooks:
@script/install-precommit
devprereqs:
which golangci-lint || go install -v github.com/golangci/golangci-lint/cmd/golangci-lint@v2.0.2
mfer/mf.pb.go: mfer/mf.proto
cd mfer && go generate .
README.md
+183 -321
View File
@@ -1,94 +1,135 @@
# mfer
[mfer](https://git.eeqj.de/sneak/mfer) is a reference implementation library
and thin wrapper command-line utility written in [Go](https://golang.org)
and first published in 2022 under the [WTFPL](https://wtfpl.net) (public
domain) license. It specifies and generates `.mf` manifest files over a
directory tree of files to encapsulate metadata about them (such as
cryptographic checksums or signatures over same) to aid in archiving,
downloading, and streaming, or mirroring. The manifest files' data is
serialized with Google's [protobuf serialization
format](https://developers.google.com/protocol-buffers). The structure of
these files can be found [in the format
specification](https://git.eeqj.de/sneak/mfer/src/branch/main/mfer/mf.proto)
which is included in the [project
repository](https://git.eeqj.de/sneak/mfer).
[mfer](https://git.eeqj.de/sneak/mfer) is a [WTFPL](https://wtfpl.net)-licensed
(public domain) [Go](https://golang.org) library and command-line tool by
[@sneak](https://sneak.berlin) that specifies and generates `.mf` manifest files
over a directory tree to encapsulate metadata about the files — such as
cryptographic checksums and signatures over same — to aid in archiving,
downloading, streaming, and mirroring. It was first published in 2022. The
manifest files' data is serialized with Google's
[protobuf serialization format](https://developers.google.com/protocol-buffers).
The structure of these files can be found
[in the format specification](https://git.eeqj.de/sneak/mfer/src/branch/main/mfer/mf.proto)
which is included in the [project repository](https://git.eeqj.de/sneak/mfer).
The current version is pre-1.0 and while the repo was published in 2022,
there has not yet been any versioned release. [SemVer](https://semver.org)
will be used for releases.
The current version is pre-1.0 and while the repo was published in 2022, there
has not yet been any versioned release. [SemVer](https://semver.org) will be
used for releases.
This project was started by [@sneak](https://sneak.berlin) to scratch an
itch in 2022 and is currently a one-person effort, though the goal is for
this to emerge as a de-facto standard and be incorporated into other
software. A compatible javascript library is planned.
This project was started by [@sneak](https://sneak.berlin) to scratch an itch in
2022 and is currently a one-person effort, though the goal is for this to emerge
as a de-facto standard and be incorporated into other software. A compatible
javascript library is planned.
# Getting Started
`mfer` builds from source with a Go 1.23+ toolchain. The generated protobuf code
is committed, so no `protoc` toolchain is required:
```sh
git clone https://git.eeqj.de/sneak/mfer.git
cd mfer
go build -o bin/mfer ./cmd/mfer
```
Generate a manifest for a directory tree, verify it later, and fetch a published
tree by URL:
```sh
# Write .index.mf, a manifest of the files under the current directory.
bin/mfer gen .
# Verify the files on disk against the manifest. Exits nonzero if any file
# is missing or corrupted.
bin/mfer check .index.mf
# Download and cryptographically verify a tree published over HTTP: mfer
# fetches <url>/index.mf, then downloads every file it lists.
bin/mfer fetch https://example.com/tree/
```
Run `bin/mfer help` for the full command list, or `bin/mfer <command> --help`
for a single command's options.
# Build Status
CI runs via `script/cibuild` (`docker build .`), which executes `make
check` (formatting, linting, tests). The `main` branch must always be
green.
CI runs `script/cibuild`, which builds the Docker image with `--no-cache`, so
the formatting, lint and test steps in the `Dockerfile` run on every build. The
`main` branch must always be green.
# Entrypoints
This repository adheres to the
[Scripts to Rule Them All](https://github.com/github/scripts-to-rule-them-all)
standard: normalized scripts in `script/` are the entrypoints for the
development workflow, and the Makefile targets are thin shims that call
them. We provide:
development workflow, and the Makefile targets are thin shims that call them. We
provide:
- `script/bootstrap` — install all dependencies (Go, golangci-lint, Go
module download), idempotently
- `script/bootstrap` — install all dependencies (Go, Go module download, and
node/yarn plus the prettier version pinned in `package.json`/`yarn.lock`),
idempotently; golangci-lint is not installed, it runs only in Docker
- `script/setup` — make a fresh clone ready for development: runs
`script/bootstrap`, then `script/install-precommit`
- `script/projectname` — output the project name (`mfer`); used by other
scripts such as `script/docker`
- `script/test` — run the test suite (`go test`), regenerating the
protobuf code first if it is stale
- `script/lint` — run `golangci-lint` and verify `gofmt` cleanliness
- `script/fmt` — format all code and docs (writes): `gofumpt`,
`golangci-lint run --fix`, and prettier for JSON/Markdown
- `script/fmt-check` — check formatting without writing
- `script/check` — run `script/test`, `script/lint`, and
`script/fmt-check`
- `script/projectname` — output the project name (`mfer`); used by other scripts
such as `script/docker`
- `script/test` — run the test suite (`go test`), regenerating the protobuf code
first if it is stale
- `script/fuzz` — fuzz the manifest parser for one minute; run by hand
(`make fuzz`), never by CI, while `script/test` runs its committed seed corpus
as ordinary tests
- `script/lint` — run `golangci-lint` in Docker: builds only the `lint` stage of
the `Dockerfile` (the Go format check, then the linter), uncached so it runs
every time, then removes the image
- `script/fmt` — format all code and docs (writes): `gofumpt` and
`script/prettier --write`
- `script/prettier` — run prettier over the repository's canonical file set
(Markdown and JSON, minus `.prettierignore`) in the given mode, `--write` or
`--check`; the single definition of that file set, so `script/fmt` and
`script/fmt-check` cannot disagree about it
- `script/fmt-check` — check formatting without writing: `script/fmt-check-go`
plus `script/prettier --check`
- `script/fmt-check-go` — the Go half of `script/fmt-check`, on its own, for the
Docker lint stage, whose image has no node
- `script/check` — run `script/test`, `script/lint`, and `script/fmt-check`
- `script/docker` — build the Docker image tagged with the project name
- `script/cibuild` — CI entrypoint: `docker build .` (the Dockerfile
runs the checks)
- `script/precommit` — pre-commit checks: `go mod tidy` verification,
then `script/check`
- `script/install-precommit` — install the git pre-commit hook that
runs `script/precommit`
- `script/cibuild` — CI entrypoint: builds the image with the same command as
`script/docker`, uncached, so the checks in the Dockerfile run every time
- `script/precommit` — pre-commit checks: `go mod tidy` verification, then
`script/check`
- `script/install-precommit` — install the git pre-commit hook that runs
`script/precommit`
# Participation
The community is as yet nonexistent so there are no defined policies or
norms yet. Primary development happens on a privately-run Gitea instance at
[https://git.eeqj.de/sneak/mfer](https://git.eeqj.de/sneak/mfer) and issues
are [tracked there](https://git.eeqj.de/sneak/mfer/issues).
The community is as yet nonexistent so there are no defined policies or norms
yet. Primary development happens on a privately-run Gitea instance at
[https://git.eeqj.de/sneak/mfer](https://git.eeqj.de/sneak/mfer) and issues are
[tracked there](https://git.eeqj.de/sneak/mfer/issues).
Changes must always be formatted with a standard `go fmt`, syntactically
valid, and must pass the linting defined in the repository (presently only
the `golangci-lint` defaults), which can be run with a `make lint`. The
`main` branch is protected and all changes must be made via [pull
requests](https://git.eeqj.de/sneak/mfer/pulls) and pass CI to be merged.
Any changes submitted to this project must also be
Changes must always be formatted with a standard `go fmt`, syntactically valid,
and must pass the linting defined in the repository's `.golangci.yml`, which
`make lint` runs in Docker. The `main` branch is protected and all changes must
be made via [pull requests](https://git.eeqj.de/sneak/mfer/pulls) and pass CI to
be merged. Any changes submitted to this project must also be
[WTFPL-licensed](https://wtfpl.net) to be considered.
See [`REPO_POLICIES.md`](REPO_POLICIES.md) for detailed coding standards,
tooling requirements, and workflow conventions.
# Problem Statement
# Rationale
## The problem
Given a plain URL, there is no standard way to safely and programmatically
download everything "under" that URL path. `wget -r` can traverse directory
listings if they're enabled, but every server has a different format, and
this does not verify cryptographic integrity of the files, or enable them to
be fetched using a different protocol other than HTTP/s.
listings if they're enabled, but every server has a different format, and this
does not verify cryptographic integrity of the files, or enable them to be
fetched using a different protocol other than HTTP/s.
Currently, the solution that people are using are sidecar files in the
format of `SHASUMS` checksum files, as well as a `SHASUMS.asc` PGP detached
signature. This is not checksum-algorithm-agnostic and the sidecar file is
not always consistently named.
Currently, the solution that people are using are sidecar files in the format of
`SHASUMS` checksum files, as well as a `SHASUMS.asc` PGP detached signature.
This is not checksum-algorithm-agnostic and the sidecar file is not always
consistently named.
Real issues I face:
@@ -98,35 +139,34 @@ Real issues I face:
- when I want to mirror an HTTP archive, I have to use special tools like
debmirror that understand the archive format
- the debian repository metadata structure is hot garbage
- when I download a large file via HTTP, I have no way of knowing if the
file content is what it's supposed to be
- when I download a large file via HTTP, I have no way of knowing if the file
content is what it's supposed to be
# Proposed Solution
## The solution
A standard, a manifest file format, and a tool for generating same.
The manifest file would be called `index.mf`, and the tool for generating such would be called `mfer`.
The manifest file would be called `index.mf`, and the tool for generating such
would be called `mfer`.
The manifest file would do several important things:
- have a standard filename, so if given
`https://example.com/downloadpackage/` one could fetch
`https://example.com/downloadpackage/index.mf` to enumerate the full
directory listing.
- have a standard filename, so if given `https://example.com/downloadpackage/`
one could fetch `https://example.com/downloadpackage/index.mf` to enumerate
the full directory listing.
- contain a version field for extensibility
- contain structured data (protobuf, json, or cbor)
- provide an inner signed container, so that the manifest file itself can
embed a signature and a public key alongside in a single file
- provide an inner signed container, so that the manifest file itself can embed
a signature and a public key alongside in a single file
- contain a list of files, each with a relative path to the manifest
- contain manifest timestamp
- contain ctime/mtime information for files so that file metadata can be
preserved
- contain cryptographic checksums in several different algorithms for each
file
- contain cryptographic checksums in several different algorithms for each file
- probably encoded with multihash to indicate algo + hash
- sha256 at the minimum
- would be nice to include an IPFS/IPLD CIDv1 root hash for each file,
which likely involves doing an ipfs file object chunking
- would be nice to include an IPFS/IPLD CIDv1 root hash for each file, which
likely involves doing an ipfs file object chunking
- maybe even including the complete IPFS/IPLD directory tree objects and
chunklists?
- this is because generating an `index.mf` does not imply publishing on
@@ -134,6 +174,28 @@ The manifest file would do several important things:
- maybe a bittorrent chunklist for torrent client compatibility? perhaps a
top-level infohash for the whole manifest?
# Design
The repository is split into a reusable library and a thin command-line wrapper
around it.
- `mfer/` is the reusable library and the heart of the project: it defines the
manifest format and implements building, scanning, checking, serialization,
and signing. The protobuf schema is `mfer/mf.proto`, and the generated code it
produces (`mfer/mf.pb.go`) is committed alongside it so the library builds
with `go get` and needs no `protoc` toolchain.
- `internal/cli/` holds the command implementations — `generate` (alias `gen`),
`check`, `freshen`, `export`, `list` (alias `ls`), `fetch`, and `version` —
that wire the library to the command-line interface.
- `internal/log/` provides the logging used by the commands and the library.
- `internal/bork/` provides the error the library returns when a manifest's
decompressed contents are not the size the manifest records.
- `cmd/mfer/` is the entrypoint: its `main` package runs `internal/cli` and
exits with the status it returns.
Everything under `internal/` is private to this repository; only the `mfer/`
package is intended for import by other software.
# Design Goals
- Replace SHASUMS/SHASUMS.asc files
@@ -146,33 +208,38 @@ The manifest file would do several important things:
# Non-Goals
- Manifest generation speed
- likely involves IPFS chunking, bittorrent chunking, and several
different cryptographic hash functions over the entirety of each and
every file
- likely involves IPFS chunking, bittorrent chunking, and several different
cryptographic hash functions over the entirety of each and every file
- Small manifest file size (within reason)
- 30MiB files are "small" these days, given modern storage/bandwidth
- metadata size should not be used as an excuse to sacrifice utility (such
as providing checksums over each chunk of a large file)
# Open Questions
# Original Design Questions
- Should the manifest file include checksums of individual file chunks, or just for the whole assembled file?
These were the open questions when the project started; open design questions
are now tracked only in the [issues](https://git.eeqj.de/sneak/mfer/issues).
- If so, should the chunksize be fixed or dynamic?
- Should the manifest file include checksums of individual file chunks, or just
for the whole assembled file? If so, should the chunk size be fixed or
dynamic? Still open, on
[issue 81](https://git.eeqj.de/sneak/mfer/issues/81#issuecomment-118698).
- Should the manifest signature format be GnuPG signatures, or those from
OpenBSD's signify (of which there is a good [golang
implementation](https://github.com/frankbraun/gosignify)?
OpenBSD's signify (of which there is a good
[golang implementation](https://github.com/frankbraun/gosignify))? Still open,
as question 10 on [issue 82](https://git.eeqj.de/sneak/mfer/issues/82).
- Should the on-disk serialization format be proto3 or json?
- Should the on-disk serialization format be proto3 or json? Settled: it is
proto3, see `FORMAT.md` and `mfer/mf.proto`.
# Tool Examples
- `mfer gen` / `mfer gen .`
- recurses under current directory and writes out an `index.mf`
- `mfer check` / `mfer check .`
- verifies checksums of all files in manifest, displaying error and
exiting nonzero if any files are missing or corrupted
- verifies checksums of all files in manifest, displaying error and exiting
nonzero if any files are missing or corrupted
- `mfer fetch https://example.com/stuff/`
- fetches `/stuff/index.mf` and downloads all files listed in manifest,
optionally resuming any that already exist locally, and assures
@@ -196,27 +263,28 @@ The manifest file would do several important things:
- (fetches `https://example.com/manifestdirectory/index.mf`, downloads and
checksums all files, resumes any that exist locally already)
- `mfer fetch https://example.com/manifestdirectory/`
- a command line option to zero/omit mtime/ctime, as well as manifest
timestamp, and sort all directory listings so that manifest file
generation is deterministic/reproducible
- URL format `mfer fetch https://exmaple.com/manifestdirectory/?key=5539AD00DE4C42F3AFE11575052443F4DF2A55C2`
to assert in the URL which PGP signing key should be used in the manifest,
so that shared URLs have a cryptographic trust root
- a "well-known" key in the manifest that maps well known keys (could reuse
the http spec) to specific file paths in the manifest.
- example: a `berlin.sneak.app.slideshow` key that maps to a json
slideshow config listing what image paths to show, and for how long, and
in what order
- a command line option to zero/omit mtime/ctime, as well as manifest timestamp,
and sort all directory listings so that manifest file generation is
deterministic/reproducible
- URL format
`mfer fetch https://exmaple.com/manifestdirectory/?key=5539AD00DE4C42F3AFE11575052443F4DF2A55C2`
to assert in the URL which PGP signing key should be used in the manifest, so
that shared URLs have a cryptographic trust root
- a "well-known" key in the manifest that maps well known keys (could reuse the
http spec) to specific file paths in the manifest.
- example: a `berlin.sneak.app.slideshow` key that maps to a json slideshow
config listing what image paths to show, and for how long, and in what
order
# Use Cases
## Web Images
I'd like to be able to put a bunch of images into a directory, generate a
manifest, and then point a slideshow client (such as an ambient display, or
a react app with the target directory in a query string arg) at that
statically hosted directory, and have it discover the full list of images
available at that URL.
manifest, and then point a slideshow client (such as an ambient display, or a
react app with the target directory in a query string arg) at that statically
hosted directory, and have it discover the full list of images available at that
URL.
## Software Distribution
@@ -226,232 +294,25 @@ resumably by either HTTP or IPFS/BitTorrent without a .torrent file.
## Filesystem Archive Integrity
I use filesystems that don't include data checksums, and I would like a
cryptographically signed checksum file so that I can later verify that a set
of archive files have not been modified, none are missing, and that the
checksums have not been altered in storage by a second party.
cryptographically signed checksum file so that I can later verify that a set of
archive files have not been modified, none are missing, and that the checksums
have not been altered in storage by a second party.
## Filesystem-Independent Checksums
I would like to be able to plug in a hard drive or flash drive and, if there
is an `index.mf` in the root, automatically detect missing/corrupted files,
I would like to be able to plug in a hard drive or flash drive and, if there is
an `index.mf` in the root, automatically detect missing/corrupted files,
regardless of filesystem format.
# Collaboration
Please email [`sneak@sneak.berlin`](mailto:sneak@sneak.berlin) with your
desired username for an account on this Gitea instance.
Please email [`sneak@sneak.berlin`](mailto:sneak@sneak.berlin) with your desired
username for an account on this Gitea instance.
# TODO: Remaining Work for 1.0
# TODO
## Design Questions (Owner Decision Required)
These require @sneak's input before implementation. Answers should be added
inline below each question.
### Format Design
**1. Should `MFFileChecksum` be simplified?** Currently it's a separate
message wrapping a single `bytes multiHash` field. Since multihash
already self-describes the algorithm, `repeated bytes hashes` directly on
`MFFilePath` would be simpler and reduce per-file protobuf overhead. Is
the extra message layer intentional (e.g. planning to add per-hash
metadata like `verified_at`)?
> _answer:_
**2. Should file permissions/mode be stored?** The format stores
mtime/ctime but not Unix file permissions. For archival use this may not
matter, but for software distribution or filesystem restoration it's a
gap. Should we reserve a field now (e.g. `optional uint32 mode = 305`)
even if we don't populate it yet?
> _answer:_
**3. Should `atime` be removed from the schema?** Access time is
volatile, non-deterministic, and often disabled (`noatime`). Including it
means two manifests of the same directory at different times will differ,
which conflicts with the determinism goal. Remove it, or document it as
"never set by default"?
> _answer:_
**4. What are the path normalization rules?** The proto has `string path`
with no specification about: always forward-slash? Must be relative? No
`..` components allowed? UTF-8 NFC vs NFD normalization (macOS vs
Linux)? Max path length? This is a security issue (path traversal) and a
cross-platform compatibility issue. What rules should the spec mandate?
> _answer:_
**5. Should we add a version byte after the magic?** Currently
`ZNAVSRFG` is followed immediately by protobuf. Adding a version byte
(`ZNAVSRFG\x01`) would allow future framing changes without requiring
protobuf parsing to detect the version. `MFFileOuter.Version` serves
this purpose but requires successful deserialization to read. Worth the
extra byte?
> _answer:_
**6. Should we add a length-prefix after the magic?** Protobuf is not
self-delimiting. If we ever want to concatenate manifests or append data
after the protobuf, the current framing is insufficient. Add a varint or
fixed-width length-prefix?
> _answer:_
### Signature Design
**7. What does the outer SHA-256 hash cover — compressed or uncompressed
data?** The code currently hashes compressed data (good for verifying
before decompression), but this should be explicitly documented. Which is
the intended behavior?
> _answer:_
**8. Should `signatureString()` sign raw bytes instead of a hex-encoded
string?** Currently the canonical string is `MAGIC-UUID-MULTIHASH` with
hex encoding, which adds a transformation layer. Signing the raw `sha256`
bytes (or compressed `innerMessage` directly) would be simpler. Keep the
string format or switch to raw bytes?
> _answer:_
**9. Should we support detached signature files (`.mf.sig`)?** Embedded
signatures are better for single-file distribution. Detached `.mf.sig`
files follow the familiar `SHASUMS`/`SHASUMS.asc` pattern and are
simpler for HTTP serving. Support both modes?
> _answer:_
**10. GPG vs pure-Go crypto for signatures?** Shelling out to `gpg` is
fragile (may not be installed, version-dependent output).
`github.com/ProtonMail/go-crypto` provides pure-Go OpenPGP, or we could
use Ed25519/signify (simpler, no key management). Which direction?
> _answer:_
### Implementation Design
**11. Should manifests be deterministic by default?** This means: sort
file entries by path, omit `createdAt` timestamp (or make it opt-in), no
`atime`. Should determinism be the default, with a
`--include-timestamps` flag to opt in?
> _answer:_
**12. Should we consolidate or keep both scanner/checker
implementations?** There are two parallel implementations:
`mfer/scanner.go` + `mfer/checker.go` (typed with `FileSize`,
`RelFilePath`) and `internal/scanner/` + `internal/checker/` (raw
`int64`, `string`). The `mfer/` versions are superior. Delete the
`internal/` versions?
> _answer:_
**13. Should the `manifest` type be exported?** Currently unexported with
exported constructors (`NewManifestFromReader`, `NewManifestFromFile`).
Consumers can't declare `var m *mfer.manifest`. Export the type, or
define an interface?
> _answer:_
**14. What should the Go module path be for 1.0?** Currently
`sneak.berlin/go/mfer` in `go.mod` but `git.eeqj.de/sneak/mfer/mfer` in
the proto `go_package` option. Which is canonical?
> _answer:_
## Implementation Tasks
### Repo Infrastructure
- [ ] Add `.golangci.yml` (fetch from
`https://git.eeqj.de/sneak/prompts/raw/branch/main/.golangci.yml`)
- [ ] Add `.editorconfig`
- [ ] Add `.gitea/workflows/check.yml` that runs `docker build .`
### Format & Correctness
- [ ] Resolve proto `go_package` path inconsistency
(`git.eeqj.de/sneak/mfer/mfer` vs `sneak.berlin/go/mfer`)
- [ ] Specify path invariants — add proto comments requiring UTF-8,
forward-slash, relative paths, no `..`, no leading `/`; validate
in `Builder.AddFile` and `Builder.AddFileWithHash` (pending design
question answer)
- [ ] Remove or deprecate `atime` from proto (pending design question
answer)
- [ ] Reserve `optional uint32 mode = 305` in `MFFilePath` for future
file permissions (pending design question answer)
- [ ] Add version byte after magic — `ZNAVSRFG\x01` for format version
1 (pending design question answer)
- [ ] Write format specification document — separate from README:
magic, outer structure, compression, inner structure, path
invariants, signature scheme, canonical serialization
### Library
- [ ] Delete `internal/scanner/` and `internal/checker/` — consolidate
on `mfer/` package versions; update CLI code (pending design
question answer)
- [ ] Add deterministic file ordering — sort entries by path
(lexicographic, byte-order) in `Builder.Build()`; add test
asserting byte-identical output from two runs
- [ ] Add decompression size limit — `io.LimitReader` in
`deserializeInner()` with `m.pbOuter.Size` as bound
- [ ] Fix `errors.Is` dead code in checker — replace with
`os.IsNotExist(err)` or `errors.Is(err, fs.ErrNotExist)`
- [ ] Fix `AddFile` to verify size — check `totalRead == size` after
reading, return error on mismatch
- [ ] Export the `manifest` type or define a public interface (pending
design question answer) — currently consumers cannot hold a reference
to a loaded manifest in their own type declarations
- [ ] Replace GPG subprocess calls with pure-Go crypto (pending design
question answer) — current implementation shells out to `gpg` which
may not be installed
- [ ] Add timeout to any remaining subprocess calls
### CLI
- [ ] Fix flag naming — all CLI flags should use kebab-case as primary
(`--include-dotfiles`, `--follow-symlinks`)
- [ ] Fix URL construction in fetch — use `BaseURL.JoinPath()` or
`url.JoinPath()` instead of string concatenation
- [ ] Add progress rate-limiting to Checker — throttle to once per
second, matching Scanner
- [ ] Add `--deterministic` flag or make it default — omit `createdAt`,
sort files (pending design question answer)
- [ ] Wire `--version` flag properly (currently only a `version`
subcommand exists; top-level `--version` shows urfave/cli generic
output)
- [ ] Add retry logic to `fetch` — currently no retries on transient
HTTP errors; needs exponential backoff
- [ ] `fetch` command uses bare `http.Get` with no timeout — needs
`http.Client` with configurable timeout
### Testing & Robustness
- [ ] Add fuzzing tests for `NewManifestFromReader` — protobuf
deserialization of untrusted input needs fuzz coverage
- [ ] Add integration test for `freshen` CLI command — current tests
only verify setup, not the actual freshen operation end-to-end
- [ ] Add test for `fetch` CLI command end-to-end (currently only
`downloadFile` is tested)
### Documentation
- [ ] Promote `FORMAT.md` as primary spec reference; README should link
to it more prominently
- [ ] Audit and update all error messages for consistency and
helpfulness
- [ ] Document the signature scheme more thoroughly (canonical string
format, verification steps)
### Release
- [ ] Finalize Go module path
- [ ] Update version constant in `mfer/constants.go`
- [ ] Add `--version` output matching SemVer
- [ ] Tag `v1.0.0`
Open work, open design questions included, is tracked in this repo's issues:
[https://git.eeqj.de/sneak/mfer/issues](https://git.eeqj.de/sneak/mfer/issues).
# See Also
@@ -465,11 +326,12 @@ the proto `go_package` option. Which is canonical?
## Links
- Repo: [https://git.eeqj.de/sneak/mfer](https://git.eeqj.de/sneak/mfer)
- Issues: [https://git.eeqj.de/sneak/mfer/issues](https://git.eeqj.de/sneak/mfer/issues)
- Issues:
[https://git.eeqj.de/sneak/mfer/issues](https://git.eeqj.de/sneak/mfer/issues)
# Authors
# Author
- [@sneak &lt;sneak@sneak.berlin&gt;](mailto:sneak@sneak.berlin)
- [@sneak](https://sneak.berlin)
# License
TODO.md
-107
View File
@@ -1,107 +0,0 @@
# Workflow
- branch (from `main`)
- do the work in Next Step
- move Next Step to the top of Completed Steps
- move the top item of Future Steps into Next Step
- commit (`TODO.md` changes in the same commit as the work)
- merge to `main` if the branch is not protected, otherwise open a PR
- push
# Status
pre-1.0. No git tags. README section "TODO: Remaining Work for 1.0" lists
open design questions and implementation tasks; policy compliance work is
in flight and unmerged.
# Next Step
Land the in-flight compliance branch chore/align-repo-policies: finish and
commit the uncommitted work (32 modified Go files, new untracked
.golangci.yml and TODO.md), confirm `make check` is green, merge the branch
(one commit ahead of main as of 2026-07-03) to main, and push.
# Completed Steps
- 2026-07-07 Adopted scripts-to-rule-them-all: `script/` entrypoints,
Makefile shims, README Entrypoints section
- 2026-07-03: aligned repo tooling, docs, and config with standardized
policies (7d9a138, on chore/align-repo-policies, unmerged)
- 2026-06-28: moved to standardized repo policies (#56, on main)
- 2026-04-07: added 1.0 roadmap as README TODO section, removed old
TODO.md (#54)
- 2026-03-20: added Gitea Actions CI workflow (#53)
- 2026-03-17: added REPO_POLICIES.md, renamed CLAUDE.md to AGENTS.md (#51);
removed committed .index.mf (#52)
- 2026-03-15: split Dockerfile with pre-built golangci-lint stage for
faster CI (#45)
- 2026-03-01: 1.0 quality polish: code review, tests, bug fixes, docs (#32)
- 2026-02-20: deterministic file ordering in Builder.Build() (#28);
removed committed vendor/modcache archives (#35)
- 2026-02-08: added --seed flag for deterministic manifest UUID
# Future Steps
- Compliance (fold of TODO.md audit 2026-07-02; verify which items the
in-flight branch already closes, then check off):
- Add .editorconfig (canonical copy from sneak/prompts)
- Add standardized .golangci.yml (present untracked on the branch;
user-owned, copy verbatim)
- Make .gitignore cover secrets (.env, _.key, _.pem), OS files
(.DS_Store), and editor files (_.swp, _~)
- Make fmt-check/lint verify with gofumpt, not gofmt -l, so
`make check` matches what `make fmt` writes
- Add README "Getting Started" section with copy-pasteable
install/usage block
- Move FORMAT.md from repo root to docs/ and update the AGENTS.md
reference
- Pin Makefile-installed Go tools (protoc-gen-go@v1.28.1,
golangci-lint@v2.0.2) by module hash, not mutable tag
- Set `make test` timeout to 30s (currently 10s)
- Add explicit README "Rationale" heading (content exists under other
names); name the author in the README Description first line
- Reconcile root-level AGENTS.md with directory-hygiene policy (keep
or relocate)
- Add a `make build` target
- Rewrite `make hooks` to use printf or a heredoc instead of
non-portable `echo '...\n...'`
- Answer the 14 owner design questions in the README 1.0 roadmap:
- Format: simplify MFFileChecksum; store file mode; drop atime;
specify path normalization rules; version byte after magic;
length-prefix after magic
- Signatures: hash covers compressed or uncompressed data; sign raw
bytes vs hex canonical string; detached .mf.sig support; GPG
subprocess vs pure-Go crypto
- Implementation: deterministic manifests by default; consolidate
duplicate scanner/checker implementations; export the manifest
type; canonical Go module path for 1.0
- Format and correctness:
- Resolve proto go_package vs go.mod module path inconsistency
- Specify and validate path invariants (UTF-8, forward-slash,
relative, no .., no leading /)
- Remove or deprecate atime; reserve mode field; add version byte
(all pending design answers)
- Write a standalone format specification document
- Library:
- Delete internal/scanner and internal/checker; consolidate on the
mfer/ package versions (pending design answer)
- Add decompression size limit via io.LimitReader in
deserializeInner()
- Fix errors.Is dead code in checker; make AddFile verify
totalRead == size
- Export manifest type or define a public interface (pending)
- Replace GPG subprocess with pure-Go crypto (pending); add timeouts
to remaining subprocess calls
- CLI:
- Kebab-case primary flag names; fix fetch URL construction with
url.JoinPath; add http.Client timeout and retry with backoff to
fetch; rate-limit Checker progress output; add --deterministic
flag or default; wire top-level --version properly
- Testing:
- Fuzz NewManifestFromReader; end-to-end tests for freshen and fetch
- Documentation:
- Promote docs/FORMAT.md as primary spec reference; audit error
messages; document the signature scheme fully
- Release:
- Finalize module path, bump version constant, SemVer --version
output, tag v1.0.0
bin/gitrev.sh
+1 -6
View File
@@ -1,12 +1,7 @@
#!/bin/bash
#
if [[ ! -z "$DRONE_COMMIT_SHA" ]]; then
echo "${DRONE_COMMIT_SHA:0:7}"
exit 0
fi
if [[ ! -z "$GITREV" ]]; then
echo $GITREV
else
git describe --always --dirty=-dirty
git describe --tags --always --dirty=-dirty
fi
cmd/mfer/main.go
+7 -1
View File
@@ -1,3 +1,4 @@
// Command mfer generates and verifies file manifests.
package main
import (
@@ -6,8 +7,13 @@ import (
"sneak.berlin/go/mfer/internal/cli"
)
// Appname is the name of this program.
const Appname = "mfer"
// Version and Gitrev are injected at build time via -ldflags.
//
//nolint:gochecknoglobals // set via ldflags at build time
var (
Appname string = "mfer"
Version string
Gitrev string
)
cmd/mfer/main_test.go
+16 -2
View File
@@ -6,6 +6,20 @@ import (
"github.com/stretchr/testify/assert"
)
func TestBuild(t *testing.T) {
assert.True(t, true)
// TestAppname pins the program name that main passes to cli.Run; it is
// the name that appears in usage output and in the log prefix. It also
// keeps this package compiled under `go test`.
func TestAppname(t *testing.T) {
t.Parallel()
assert.Equal(t, "mfer", Appname)
}
// TestVersionDefaults documents that Version and Gitrev are empty unless
// injected at build time via -ldflags.
func TestVersionDefaults(t *testing.T) {
t.Parallel()
assert.Empty(t, Version)
assert.Empty(t, Gitrev)
}
internal/bork/error.go
+4 -5
View File
@@ -1,15 +1,14 @@
// Package bork defines the sentinel errors used by the manifest
// reader and writer.
package bork
import (
"errors"
"fmt"
)
var (
// ErrMissingMagic indicates the input lacks the manifest magic bytes.
ErrMissingMagic = errors.New("missing magic bytes in file")
// ErrFileTruncated indicates the input ended before the expected length.
ErrFileTruncated = errors.New("file/stream is truncated abnormally")
)
func Newf(format string, args ...interface{}) error {
return fmt.Errorf(format, args...)
}
internal/bork/error_test.go
+5 -2
View File
@@ -1,11 +1,14 @@
package bork
package bork_test
import (
"testing"
"github.com/stretchr/testify/assert"
"sneak.berlin/go/mfer/internal/bork"
)
func TestBuild(t *testing.T) {
assert.NotNil(t, ErrMissingMagic)
t.Parallel()
assert.Error(t, bork.ErrMissingMagic)
}
internal/cli/check.go
+259 -110
View File
@@ -1,10 +1,15 @@
// Package cli implements the mfer command-line interface.
package cli
import (
"context"
"encoding/hex"
"errors"
"fmt"
"io"
"math"
"path/filepath"
"strconv"
"strings"
"time"
@@ -15,21 +20,256 @@ import (
"sneak.berlin/go/mfer/mfer"
)
// fingerprintHexLen is the length of a full GPG key fingerprint in hex
// characters.
const fingerprintHexLen = 40
var (
// errNoManifestFound indicates no manifest file was found in the
// searched directory.
errNoManifestFound = errors.New("no manifest found")
// errInvalidFingerprint indicates a malformed --require-signature
// fingerprint argument. The length is spliced in from
// fingerprintHexLen so the two cannot drift apart.
errInvalidFingerprint = errors.New(
"invalid fingerprint: must be exactly " +
strconv.Itoa(fingerprintHexLen) + " hex characters")
// errManifestNotSigned indicates a signature was required but the
// manifest is unsigned. It is wrapped mid-sentence so that the
// rendered message stays exactly as mfer has always printed it.
errManifestNotSigned = errors.New("manifest is not signed")
// errSignerMismatch indicates the embedded signing key fingerprint
// does not match the required signer. Its text is the mid-sentence
// fragment of the rendered message, which users grep for in CI and
// which must therefore not change; match it with errors.Is rather
// than by reading it.
errSignerMismatch = errors.New("does not match required")
)
// safeUint64 converts a non-negative int64 to uint64, clamping negative
// values to zero.
func safeUint64(n int64) uint64 {
if n < 0 {
return 0
}
return uint64(n)
}
// safeRateUint64 converts a bytes-per-second rate to uint64 for display.
//
// A rate is computed as bytes/elapsed, so it is +Inf when the elapsed
// time rounds to zero and NaN when zero bytes were processed in zero
// time. Neither has a defined conversion to uint64, and on amd64 +Inf
// converts to a number that renders as "8.0 EiB/s"; both display as zero
// instead.
func safeRateUint64(rate float64) uint64 {
if math.IsNaN(rate) || math.IsInf(rate, 0) || rate <= 0 {
return 0
}
if rate >= math.MaxUint64 {
return math.MaxUint64
}
return uint64(rate)
}
// findManifest looks for a manifest file in the given directory.
// It checks for index.mf and .index.mf, returning the first one found.
func findManifest(fs afero.Fs, dir string) (string, error) {
candidates := []string{"index.mf", ".index.mf"}
for _, name := range candidates {
path := filepath.Join(dir, name)
exists, err := afero.Exists(fs, path)
if err != nil {
return "", err
}
if exists {
return path, nil
}
}
return "", fmt.Errorf("no manifest found in %s (looked for index.mf and .index.mf)", dir)
return "", fmt.Errorf(
"%w in %s (looked for index.mf and .index.mf)", errNoManifestFound, dir)
}
// fetchManifestToTemp downloads a manifest URL to a temporary file and
// returns the temp file path. The caller is responsible for removing it.
func (mfa *CLIApp) fetchManifestToTemp(url string) (string, error) {
rc, fetchErr := mfa.openManifestReader(url)
if fetchErr != nil {
return "", fetchErr
}
tmpFile, tmpErr := afero.TempFile(mfa.Fs, "", "mfer-manifest-*.mf")
if tmpErr != nil {
_ = rc.Close()
return "", fmt.Errorf("failed to create temp file: %w", tmpErr)
}
tmpPath := tmpFile.Name()
_, cpErr := io.Copy(tmpFile, rc)
_ = rc.Close()
_ = tmpFile.Close()
if cpErr != nil {
_ = mfa.Fs.Remove(tmpPath)
return "", fmt.Errorf("failed to download manifest: %w", cpErr)
}
return tmpPath, nil
}
// verifyRequiredSigner enforces the --require-signature fingerprint
// against the manifest's embedded signing key.
func verifyRequiredSigner(
ctx context.Context, chk *mfer.Checker, requiredSigner string,
) error {
// Validate fingerprint format: must be exactly 40 hex characters
if len(requiredSigner) != fingerprintHexLen {
return fmt.Errorf("%w, got %d", errInvalidFingerprint, len(requiredSigner))
}
_, err := hex.DecodeString(requiredSigner)
if err != nil {
return fmt.Errorf("invalid fingerprint: must be valid hex: %w", err)
}
if !chk.IsSigned() {
return fmt.Errorf("%w, but signature from %s is required",
errManifestNotSigned, requiredSigner)
}
// Extract fingerprint from the embedded public key (not from the
// signer field). This validates the key is importable and gets its
// actual fingerprint.
embeddedFP, err := chk.ExtractEmbeddedSigningKeyFP(ctx)
if err != nil {
return fmt.Errorf(
"failed to extract fingerprint from embedded signing key: %w", err)
}
// Compare fingerprints - must be exact match (case-insensitive)
if !strings.EqualFold(embeddedFP, requiredSigner) {
return fmt.Errorf("embedded signing key fingerprint %s %w %s",
embeddedFP, errSignerMismatch, requiredSigner)
}
log.Infof("manifest signature verified (signer: %s)", embeddedFP)
return nil
}
// reportCheckProgress renders progress updates until the channel closes.
func reportCheckProgress(progress <-chan mfer.CheckStatus) {
for status := range progress {
if status.ETA > 0 {
log.Progressf("Checking: %d/%d files, %s/s, ETA %s, %d failures",
status.CheckedFiles,
status.TotalFiles,
humanize.IBytes(safeRateUint64(status.BytesPerSec)),
status.ETA.Round(time.Second),
status.Failures)
} else {
log.Progressf("Checking: %d/%d files, %s/s, %d failures",
status.CheckedFiles,
status.TotalFiles,
humanize.IBytes(safeRateUint64(status.BytesPerSec)),
status.Failures)
}
}
log.ProgressDone()
}
// countCheckFailures consumes check results, counting and logging
// failures, then closes done.
func countCheckFailures(
results <-chan mfer.Result, failures *int64, done chan<- struct{},
) {
for result := range results {
if result.Status != mfer.StatusOK {
*failures++
log.Infof("%s: %s (%s)", result.Status, result.Path, result.Message)
} else {
log.Verbosef("%s: %s", result.Status, result.Path)
}
}
close(done)
}
// findExtraFiles reports files present on disk but absent from the
// manifest, counting each as a failure.
func findExtraFiles(ctx *cli.Context, chk *mfer.Checker, failures *int64) error {
extraResults := make(chan mfer.Result, 1)
extraDone := make(chan struct{})
go func() {
for result := range extraResults {
*failures++
log.Infof("%s: %s (%s)", result.Status, result.Path, result.Message)
}
close(extraDone)
}()
err := chk.FindExtraFiles(ctx.Context, extraResults)
if err != nil {
return fmt.Errorf("failed to check for extra files: %w", err)
}
<-extraDone
return nil
}
// runCheck runs the manifest check with progress and result reporting
// and returns the number of failures.
func runCheck(ctx *cli.Context, chk *mfer.Checker, showProgress bool) (int64, error) {
// Set up results channel
results := make(chan mfer.Result, 1)
// Set up progress channel
var progress chan mfer.CheckStatus
if showProgress {
progress = make(chan mfer.CheckStatus, 1)
go reportCheckProgress(progress)
}
// Process results in a goroutine
var failures int64
done := make(chan struct{})
go countCheckFailures(results, &failures, done)
// Run check
err := chk.Check(ctx.Context, results, progress)
if err != nil {
return 0, fmt.Errorf("check failed: %w", err)
}
// Wait for results processing to complete
<-done
// Check for extra files if requested
if ctx.Bool("no-extra-files") {
err = findExtraFiles(ctx, chk, &failures)
if err != nil {
return 0, err
}
}
return failures, nil
}
func (mfa *CLIApp) checkManifestOperation(ctx *cli.Context) error {
@@ -42,24 +282,13 @@ func (mfa *CLIApp) checkManifestOperation(ctx *cli.Context) error {
// URL manifests need to be downloaded to a temp file for the checker
if isHTTPURL(manifestPath) {
rc, fetchErr := mfa.openManifestReader(manifestPath)
if fetchErr != nil {
return fmt.Errorf("check: %w", fetchErr)
}
tmpFile, tmpErr := afero.TempFile(mfa.Fs, "", "mfer-manifest-*.mf")
tmpPath, tmpErr := mfa.fetchManifestToTemp(manifestPath)
if tmpErr != nil {
_ = rc.Close()
return fmt.Errorf("check: failed to create temp file: %w", tmpErr)
}
tmpPath := tmpFile.Name()
_, cpErr := io.Copy(tmpFile, rc)
_ = rc.Close()
_ = tmpFile.Close()
if cpErr != nil {
_ = mfa.Fs.Remove(tmpPath)
return fmt.Errorf("check: failed to download manifest: %w", cpErr)
return fmt.Errorf("check: %w", tmpErr)
}
defer func() { _ = mfa.Fs.Remove(tmpPath) }()
manifestPath = tmpPath
}
@@ -77,111 +306,31 @@ func (mfa *CLIApp) checkManifestOperation(ctx *cli.Context) error {
// Check signature requirement
requiredSigner := ctx.String("require-signature")
if requiredSigner != "" {
// Validate fingerprint format: must be exactly 40 hex characters
if len(requiredSigner) != 40 {
return fmt.Errorf("invalid fingerprint: must be exactly 40 hex characters, got %d", len(requiredSigner))
}
if _, err := hex.DecodeString(requiredSigner); err != nil {
return fmt.Errorf("invalid fingerprint: must be valid hex: %w", err)
}
if !chk.IsSigned() {
return fmt.Errorf("manifest is not signed, but signature from %s is required", requiredSigner)
}
// Extract fingerprint from the embedded public key (not from the signer field)
// This validates the key is importable and gets its actual fingerprint
embeddedFP, err := chk.ExtractEmbeddedSigningKeyFP()
err = verifyRequiredSigner(ctx.Context, chk, requiredSigner)
if err != nil {
return fmt.Errorf("failed to extract fingerprint from embedded signing key: %w", err)
return err
}
}
// Compare fingerprints - must be exact match (case-insensitive)
if !strings.EqualFold(embeddedFP, requiredSigner) {
return fmt.Errorf("embedded signing key fingerprint %s does not match required %s", embeddedFP, requiredSigner)
}
log.Infof("manifest signature verified (signer: %s)", embeddedFP)
}
log.Infof("manifest contains %d files, %s", chk.FileCount(),
humanize.IBytes(safeUint64(int64(chk.TotalBytes()))))
log.Infof("manifest contains %d files, %s", chk.FileCount(), humanize.IBytes(uint64(chk.TotalBytes())))
// Set up results channel
results := make(chan mfer.Result, 1)
// Set up progress channel
var progress chan mfer.CheckStatus
if showProgress {
progress = make(chan mfer.CheckStatus, 1)
go func() {
for status := range progress {
if status.ETA > 0 {
log.Progressf("Checking: %d/%d files, %s/s, ETA %s, %d failures",
status.CheckedFiles,
status.TotalFiles,
humanize.IBytes(uint64(status.BytesPerSec)),
status.ETA.Round(time.Second),
status.Failures)
} else {
log.Progressf("Checking: %d/%d files, %s/s, %d failures",
status.CheckedFiles,
status.TotalFiles,
humanize.IBytes(uint64(status.BytesPerSec)),
status.Failures)
}
}
log.ProgressDone()
}()
}
// Process results in a goroutine
var failures int64
done := make(chan struct{})
go func() {
for result := range results {
if result.Status != mfer.StatusOK {
failures++
log.Infof("%s: %s (%s)", result.Status, result.Path, result.Message)
} else {
log.Verbosef("%s: %s", result.Status, result.Path)
}
}
close(done)
}()
// Run check
err = chk.Check(ctx.Context, results, progress)
failures, err := runCheck(ctx, chk, showProgress)
if err != nil {
return fmt.Errorf("check failed: %w", err)
}
// Wait for results processing to complete
<-done
// Check for extra files if requested
if ctx.Bool("no-extra-files") {
extraResults := make(chan mfer.Result, 1)
extraDone := make(chan struct{})
go func() {
for result := range extraResults {
failures++
log.Infof("%s: %s (%s)", result.Status, result.Path, result.Message)
}
close(extraDone)
}()
err = chk.FindExtraFiles(ctx.Context, extraResults)
if err != nil {
return fmt.Errorf("failed to check for extra files: %w", err)
}
<-extraDone
return err
}
elapsed := time.Since(mfa.startupTime).Seconds()
rate := float64(chk.TotalBytes()) / elapsed
if failures == 0 {
log.Infof("checked %d files (%s) in %.1fs (%s/s): all OK", chk.FileCount(), humanize.IBytes(uint64(chk.TotalBytes())), elapsed, humanize.IBytes(uint64(rate)))
log.Infof("checked %d files (%s) in %.1fs (%s/s): all OK",
chk.FileCount(), humanize.IBytes(safeUint64(int64(chk.TotalBytes()))),
elapsed, humanize.IBytes(safeRateUint64(rate)))
} else {
log.Infof("checked %d files (%s) in %.1fs (%s/s): %d failed", chk.FileCount(), humanize.IBytes(uint64(chk.TotalBytes())), elapsed, humanize.IBytes(uint64(rate)), failures)
log.Infof("checked %d files (%s) in %.1fs (%s/s): %d failed",
chk.FileCount(), humanize.IBytes(safeUint64(int64(chk.TotalBytes()))),
elapsed, humanize.IBytes(safeRateUint64(rate)), failures)
}
if failures > 0 {
internal/cli/entry.go
+11 -7
View File
@@ -7,15 +7,18 @@ import (
"github.com/spf13/afero"
)
// NO_COLOR disables colored output when set. Automatically true if the
// NoColor disables colored output when set. Automatically true if the
// NO_COLOR environment variable is present (per https://no-color.org/).
var NO_COLOR bool
//
//nolint:gochecknoglobals // process-wide setting derived from the environment
var NoColor = noColorEnvSet()
func init() {
NO_COLOR = false
if _, exists := os.LookupEnv("NO_COLOR"); exists {
NO_COLOR = true
}
// noColorEnvSet reports whether the NO_COLOR environment variable is
// present.
func noColorEnvSet() bool {
_, exists := os.LookupEnv("NO_COLOR")
return exists
}
// RunOptions contains all configuration for running the CLI application.
@@ -64,5 +67,6 @@ func RunWithOptions(opts *RunOptions) int {
}
m.run(opts.Args)
return m.exitCode
}
internal/cli/entry_test.go
+500 -205
View File
File diff suppressed because it is too large Load Diff
internal/cli/errmsg_test.go
+355
View File
@@ -0,0 +1,355 @@
//nolint:testpackage // white-box tests exercise unexported internals
package cli
import (
"bytes"
"context"
"flag"
"net/http"
"net/http/httptest"
"os"
"os/exec"
"path/filepath"
"testing"
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
urfcli "github.com/urfave/cli/v2"
"sneak.berlin/go/mfer/mfer"
)
// These tests pin the exact rendered text of the CLI's user-visible error
// messages. The messages are grepped for in CI pipelines and quoted in bug
// reports, so a reword is a deliberate change, never a refactoring side
// effect.
//
// Every case drives the real function that emits the message and asserts on
// what it returns. No production format string is restated here: a test that
// only re-rendered a copied format string would keep passing after the real
// message changed, which is exactly the regression these tests exist to
// catch.
// Full 40-hex fingerprints used where a message embeds one.
const (
msgFpA = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
msgFpB = "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"
)
// runLocked runs fn while holding runMu, so operations that write to the
// process-global logger do not race the other CLI runs.
func runLocked(fn func() error) error {
runMu.Lock()
defer runMu.Unlock()
return fn()
}
// unsignedChecker builds a Checker over a freshly scanned, unsigned manifest.
func unsignedChecker(t *testing.T) *mfer.Checker {
t.Helper()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/d", 0o755))
require.NoError(t, afero.WriteFile(fs, "/d/f.txt", []byte("hi"), 0o644))
s := mfer.NewScannerWithOptions(&mfer.ScannerOptions{Fs: fs})
require.NoError(t, s.EnumeratePath("/d", nil))
var buf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &buf, nil))
require.NoError(t, afero.WriteFile(fs, "/d/index.mf", buf.Bytes(), 0o644))
chk, err := mfer.NewChecker("/d/index.mf", "/d", fs)
require.NoError(t, err)
require.False(t, chk.IsSigned())
return chk
}
func TestNoManifestFoundMessage(t *testing.T) {
t.Parallel()
_, err := findManifest(afero.NewMemMapFs(), "/tmp/x")
require.ErrorIs(t, err, errNoManifestFound)
assert.EqualError(t, err,
"no manifest found in /tmp/x (looked for index.mf and .index.mf)")
}
func TestVerifyRequiredSignerMessages(t *testing.T) {
t.Parallel()
t.Run("invalid fingerprint length", func(t *testing.T) {
t.Parallel()
err := verifyRequiredSigner(context.Background(),
unsignedChecker(t), "12345678")
require.ErrorIs(t, err, errInvalidFingerprint)
assert.EqualError(t, err,
"invalid fingerprint: must be exactly 40 hex characters, got 8")
})
t.Run("manifest not signed", func(t *testing.T) {
t.Parallel()
err := verifyRequiredSigner(context.Background(),
unsignedChecker(t), msgFpA)
require.ErrorIs(t, err, errManifestNotSigned)
assert.EqualError(t, err,
"manifest is not signed, but signature from "+msgFpA+" is required")
})
}
// TestSignerMismatchMessage drives verifyRequiredSigner against a real signed
// manifest. The embedded fingerprint is whatever the generated key produced,
// so it is read back from the checker and substituted into the expected
// string; the required signer is a fixed value that cannot match it. Requires
// gpg and is skipped where it is absent, as the other signing tests are.
//
//nolint:paralleltest // signedChecker calls t.Setenv, which bars t.Parallel
func TestSignerMismatchMessage(t *testing.T) {
chk := signedChecker(t)
embeddedFP, err := chk.ExtractEmbeddedSigningKeyFP(context.Background())
require.NoError(t, err)
err = verifyRequiredSigner(context.Background(), chk, msgFpB)
require.ErrorIs(t, err, errSignerMismatch)
assert.EqualError(t, err,
"embedded signing key fingerprint "+embeddedFP+
" does not match required "+msgFpB)
}
// signedChecker builds a Checker over a manifest signed by a throwaway GPG
// key generated in a temporary GNUPGHOME.
func signedChecker(t *testing.T) *mfer.Checker {
t.Helper()
_, err := exec.LookPath("gpg")
if err != nil {
t.Skip("gpg not installed, skipping signing test")
}
gpgHome := t.TempDir()
params := "%no-protection\n" +
"Key-Type: RSA\nKey-Length: 2048\n" +
"Name-Real: MFER Test Key\nName-Email: test@mfer.test\n" +
"Expire-Date: 0\n%commit\n"
paramsFile := filepath.Join(gpgHome, "key-params")
require.NoError(t, os.WriteFile(paramsFile, []byte(params), 0o600))
//nolint:gosec // paramsFile is a test-controlled path inside t.TempDir()
cmd := exec.CommandContext(context.Background(), "gpg",
"--batch", "--gen-key", paramsFile)
cmd.Env = append(os.Environ(), "GNUPGHOME="+gpgHome)
out, err := cmd.CombinedOutput()
if err != nil {
t.Skipf("failed to generate test GPG key: %v: %s", err, out)
}
t.Setenv("GNUPGHOME", gpgHome)
b := mfer.NewBuilder()
b.SetSigningOptions(&mfer.SigningOptions{KeyID: mfer.GPGKeyID("test@mfer.test")})
content := []byte("signed file")
_, err = b.AddFile("f.txt", mfer.FileSize(len(content)), mfer.ModTime{},
bytes.NewReader(content), nil)
require.NoError(t, err)
var buf bytes.Buffer
require.NoError(t, b.Build(context.Background(), &buf))
fs := afero.NewMemMapFs()
require.NoError(t, afero.WriteFile(fs, "/index.mf", buf.Bytes(), 0o644))
chk, err := mfer.NewChecker("/index.mf", "/", fs)
require.NoError(t, err)
require.True(t, chk.IsSigned())
return chk
}
func TestPathDoesNotExistMessage(t *testing.T) {
t.Parallel()
set := flag.NewFlagSet("gen", flag.ContinueOnError)
require.NoError(t, set.Parse([]string{"nope"}))
mfa := &CLIApp{Fs: afero.NewMemMapFs()}
ctx := urfcli.NewContext(nil, set, nil)
_, err := mfa.collectInputPaths(ctx.Args())
require.ErrorIs(t, err, errPathNotExist)
assert.EqualError(t, err, "path does not exist: nope")
}
func TestOutputFileExistsMessage(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/d", 0o755))
require.NoError(t, afero.WriteFile(fs, "/d/f.txt", []byte("hi"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/out.mf", []byte("old"), 0o644))
set := flag.NewFlagSet("gen", flag.ContinueOnError)
set.String("output", "", "")
set.Bool("force", false, "")
require.NoError(t, set.Parse([]string{"/d"}))
require.NoError(t, set.Set("output", "/out.mf"))
mfa := &CLIApp{Fs: fs}
ctx := urfcli.NewContext(nil, set, nil)
// generateManifestOperation writes to the process-global logger during
// enumeration, so serialize with the other CLI runs.
err := runLocked(func() error { return mfa.generateManifestOperation(ctx) })
require.ErrorIs(t, err, errOutputExists)
assert.EqualError(t, err,
"output file /out.mf already exists (use --force to overwrite)")
}
// TestUnknownCommandMessage drives the root command's action. run only logs
// the error that action returns, so the test lets run build the app with no
// command given and then runs that same app on an unknown command to get the
// error itself.
func TestUnknownCommandMessage(t *testing.T) {
t.Parallel()
mfa := &CLIApp{
appname: testApp,
Stdout: &bytes.Buffer{},
Stderr: &bytes.Buffer{},
Fs: afero.NewMemMapFs(),
}
// run points the process-global logger at this app's output, so
// serialize with the other CLI runs.
err := runLocked(func() error {
mfa.run([]string{testApp})
return mfa.app.Run([]string{testApp, "bogus"})
})
require.ErrorIs(t, err, errUnknownCommand)
assert.EqualError(t, err, `unknown command "bogus"`)
}
func TestManifestLoaderHTTPStatusMessage(t *testing.T) {
t.Parallel()
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusNotFound)
}))
defer server.Close()
mfa := &CLIApp{Fs: afero.NewMemMapFs()}
_, err := mfa.openManifestReader(server.URL + "/foo.mf")
require.ErrorIs(t, err, errHTTPStatus)
assert.EqualError(t, err,
"failed to fetch "+server.URL+"/foo.mf: HTTP 404")
}
func TestFetchManifestHTTPStatusMessage(t *testing.T) {
t.Parallel()
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusNotFound)
}))
defer server.Close()
set := flag.NewFlagSet("fetch", flag.ContinueOnError)
require.NoError(t, set.Parse([]string{server.URL}))
mfa := &CLIApp{Fs: afero.NewMemMapFs()}
ctx := urfcli.NewContext(nil, set, nil)
// fetchManifestOperation logs to the process-global logger.
err := runLocked(func() error { return mfa.fetchManifestOperation(ctx) })
require.ErrorIs(t, err, errHTTPStatus)
assert.EqualError(t, err, "failed to fetch manifest: HTTP 404")
}
func TestFetchFileHTTPStatusMessage(t *testing.T) {
t.Parallel()
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusInternalServerError)
}))
defer server.Close()
err := downloadFile(context.Background(), server.URL+"/x", "x",
&mfer.MFFilePath{}, nil)
require.ErrorIs(t, err, errHTTPStatus)
assert.EqualError(t, err, "HTTP 500")
}
func TestURLRequiredMessage(t *testing.T) {
t.Parallel()
set := flag.NewFlagSet("fetch", flag.ContinueOnError)
require.NoError(t, set.Parse([]string{}))
mfa := &CLIApp{Fs: afero.NewMemMapFs()}
ctx := urfcli.NewContext(nil, set, nil)
// fetchManifestOperation logs to the process-global logger.
err := runLocked(func() error { return mfa.fetchManifestOperation(ctx) })
require.ErrorIs(t, err, errURLRequired)
assert.EqualError(t, err, "URL argument required")
}
func TestSanitizePathMessages(t *testing.T) {
t.Parallel()
t.Run("empty", func(t *testing.T) {
t.Parallel()
_, err := sanitizePath("")
require.ErrorIs(t, err, errEmptyPath)
assert.EqualError(t, err, "empty path")
})
t.Run("absolute", func(t *testing.T) {
t.Parallel()
_, err := sanitizePath("/etc/passwd")
require.ErrorIs(t, err, errAbsolutePath)
assert.EqualError(t, err, "absolute path not allowed: /etc/passwd")
})
t.Run("traversal", func(t *testing.T) {
t.Parallel()
_, err := sanitizePath("../x")
require.ErrorIs(t, err, errPathTraversal)
assert.EqualError(t, err, "path traversal not allowed: ../x")
})
}
func TestSizeMismatchMessage(t *testing.T) {
t.Parallel()
// finishDownload returns the size-mismatch error before it touches the
// paths, digest, or entry, so those can be zero here.
err := finishDownload("", "", 9, 10, nil, nil, nil, nil)
require.ErrorIs(t, err, errSizeMismatch)
assert.EqualError(t, err, "size mismatch: expected 10 bytes, got 9")
}
func TestHashMismatchMessage(t *testing.T) {
t.Parallel()
// A 32-byte digest that matches none of the (empty) manifest hashes.
err := verifyDownloadedHash(make([]byte, 32), &mfer.MFFilePath{})
require.ErrorIs(t, err, errHashMismatch)
require.NotErrorIs(t, err, errSizeMismatch)
assert.EqualError(t, err, "hash mismatch")
}
internal/cli/export.go
+15 -10
View File
@@ -29,6 +29,7 @@ func (mfa *CLIApp) exportManifestOperation(ctx *cli.Context) error {
if err != nil {
return fmt.Errorf("export: %w", err)
}
defer func() { _ = rc.Close() }()
manifest, err := mfer.NewManifestFromReader(rc)
@@ -41,21 +42,23 @@ func (mfa *CLIApp) exportManifestOperation(ctx *cli.Context) error {
for _, f := range files {
entry := ExportEntry{
Path: f.Path,
Size: f.Size,
Hashes: make([]string, 0, len(f.Hashes)),
Path: f.GetPath(),
Size: f.GetSize(),
Hashes: make([]string, 0, len(f.GetHashes())),
}
for _, h := range f.Hashes {
entry.Hashes = append(entry.Hashes, hex.EncodeToString(h.MultiHash))
for _, h := range f.GetHashes() {
entry.Hashes = append(entry.Hashes, hex.EncodeToString(h.GetMultiHash()))
}
if f.Mtime != nil {
t := time.Unix(f.Mtime.Seconds, int64(f.Mtime.Nanos)).UTC().Format(time.RFC3339Nano)
if mtime, ok := entryMtime(f); ok {
t := mtime.UTC().Format(time.RFC3339Nano)
entry.Mtime = &t
}
if f.Ctime != nil {
t := time.Unix(f.Ctime.Seconds, int64(f.Ctime.Nanos)).UTC().Format(time.RFC3339Nano)
if f.GetCtime() != nil {
t := time.Unix(f.GetCtime().GetSeconds(), int64(f.GetCtime().GetNanos())).
UTC().Format(time.RFC3339Nano)
entry.Ctime = &t
}
@@ -64,7 +67,9 @@ func (mfa *CLIApp) exportManifestOperation(ctx *cli.Context) error {
enc := json.NewEncoder(mfa.Stdout)
enc.SetIndent("", " ")
if err := enc.Encode(entries); err != nil {
err = enc.Encode(entries)
if err != nil {
return fmt.Errorf("export: failed to encode JSON: %w", err)
}
internal/cli/export_test.go
+31 -12
View File
@@ -14,9 +14,12 @@ import (
"sneak.berlin/go/mfer/mfer"
)
const testCmdExport = "export"
// buildTestManifest creates a manifest from in-memory files and returns its bytes.
func buildTestManifest(t *testing.T, files map[string][]byte) []byte {
t.Helper()
sourceFs := afero.NewMemMapFs()
for path, content := range files {
require.NoError(t, sourceFs.MkdirAll("/", 0o755))
@@ -28,11 +31,15 @@ func buildTestManifest(t *testing.T, files map[string][]byte) []byte {
require.NoError(t, s.EnumerateFS(sourceFs, "/", nil))
var buf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &buf, nil))
return buf.Bytes()
}
func TestExportManifestOperation(t *testing.T) {
t.Parallel()
testFiles := map[string][]byte{
"hello.txt": []byte("Hello, World!"),
"sub/file.txt": []byte("nested content"),
@@ -44,9 +51,10 @@ func TestExportManifestOperation(t *testing.T) {
require.NoError(t, afero.WriteFile(fs, "/test.mf", manifestData, 0o644))
var stdout, stderr bytes.Buffer
exitCode := RunWithOptions(&RunOptions{
Appname: "mfer",
Args: []string{"mfer", "export", "/test.mf"},
exitCode := runCLI(&RunOptions{
Appname: testApp,
Args: []string{testApp, testCmdExport, "/test.mf"},
Stdin: &bytes.Buffer{},
Stdout: &stdout,
Stderr: &stderr,
@@ -64,28 +72,33 @@ func TestExportManifestOperation(t *testing.T) {
for _, e := range entries {
pathSet[e.Path] = true
assert.NotEmpty(t, e.Hashes, "entry %s should have hashes", e.Path)
assert.Greater(t, e.Size, int64(0), "entry %s should have positive size", e.Path)
assert.Positive(t, e.Size, "entry %s should have positive size", e.Path)
}
assert.True(t, pathSet["hello.txt"])
assert.True(t, pathSet["sub/file.txt"])
}
func TestExportFromHTTPURL(t *testing.T) {
t.Parallel()
testFiles := map[string][]byte{
"a.txt": []byte("aaa"),
}
manifestData := buildTestManifest(t, testFiles)
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.Header().Set("Content-Type", "application/octet-stream")
_, _ = w.Write(manifestData)
}))
defer server.Close()
var stdout, stderr bytes.Buffer
exitCode := RunWithOptions(&RunOptions{
Appname: "mfer",
Args: []string{"mfer", "export", server.URL + "/index.mf"},
exitCode := runCLI(&RunOptions{
Appname: testApp,
Args: []string{testApp, testCmdExport, server.URL + "/index.mf"},
Stdin: &bytes.Buffer{},
Stdout: &stdout,
Stderr: &stderr,
@@ -101,21 +114,25 @@ func TestExportFromHTTPURL(t *testing.T) {
}
func TestListFromHTTPURL(t *testing.T) {
t.Parallel()
testFiles := map[string][]byte{
"one.txt": []byte("1"),
"two.txt": []byte("22"),
}
manifestData := buildTestManifest(t, testFiles)
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
_, _ = w.Write(manifestData)
}))
defer server.Close()
var stdout, stderr bytes.Buffer
exitCode := RunWithOptions(&RunOptions{
Appname: "mfer",
Args: []string{"mfer", "list", server.URL + "/index.mf"},
exitCode := runCLI(&RunOptions{
Appname: testApp,
Args: []string{testApp, "list", server.URL + "/index.mf"},
Stdin: &bytes.Buffer{},
Stdout: &stdout,
Stderr: &stderr,
@@ -129,6 +146,8 @@ func TestListFromHTTPURL(t *testing.T) {
}
func TestIsHTTPURL(t *testing.T) {
t.Parallel()
assert.True(t, isHTTPURL("http://example.com/manifest.mf"))
assert.True(t, isHTTPURL("https://example.com/manifest.mf"))
assert.False(t, isHTTPURL("/local/path.mf"))
internal/cli/fetch.go
+316 -104
View File
@@ -2,7 +2,9 @@ package cli
import (
"bytes"
"context"
"crypto/sha256"
"errors"
"fmt"
"io"
"net/http"
@@ -20,6 +22,53 @@ import (
"sneak.berlin/go/mfer/mfer"
)
const (
// progressChanBuffer is the buffer size of the download progress
// channel.
progressChanBuffer = 10
// bitsPerByte converts a bytes-per-second rate to bits per second.
bitsPerByte = 8
// dirPerms is the permission mode for directories created for
// downloaded files. Fetched trees are content that is normally
// published (served by a web server, read by another uid), so the
// traversal bit for group and other must stay set.
dirPerms os.FileMode = 0o755
// filePerms is the permission mode, before the umask, for downloaded
// files. It is the mode os.Create uses; like dirPerms, it keeps group
// and other read access.
filePerms os.FileMode = 0o666
// Bitrate unit thresholds in bits per second.
bpsPerGbps = 1e9
bpsPerMbps = 1e6
bpsPerKbps = 1e3
)
var (
// errURLRequired indicates the fetch command was run without a URL
// argument.
errURLRequired = errors.New("URL argument required")
// errEmptyPath indicates an empty file path in the manifest.
errEmptyPath = errors.New("empty path")
// errAbsolutePath indicates an absolute file path in the manifest.
errAbsolutePath = errors.New("absolute path not allowed")
// errPathTraversal indicates a manifest path escaping the target
// directory.
errPathTraversal = errors.New("path traversal not allowed")
// errSymlinkInPath indicates a manifest path running through a
// symlink that already exists in the target directory.
errSymlinkInPath = errors.New("symlink in path not allowed")
// errSizeMismatch indicates a downloaded file with an unexpected
// size.
errSizeMismatch = errors.New("size mismatch")
// errHashMismatch indicates a downloaded file whose hash matches no
// manifest hash.
errHashMismatch = errors.New("hash mismatch")
)
// DownloadProgress reports the progress of a single file download.
type DownloadProgress struct {
Path string // File path being downloaded
@@ -29,14 +78,98 @@ type DownloadProgress struct {
ETA time.Duration // Estimated time to completion
}
// httpGet issues a GET request for the given URL using the provided
// context and returns the response. The caller must close the body.
//
// Errors are returned unwrapped: this helper replaced direct http.Get
// calls, and each caller already supplies its own context string, so
// adding one here would change user-visible messages.
func httpGet(ctx context.Context, fileURL string) (*http.Response, error) {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, fileURL, nil)
if err != nil {
return nil, err
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
return resp, nil
}
// reportDownloadProgress renders download progress until the channel
// closes, then closes done.
func reportDownloadProgress(progress <-chan DownloadProgress, done chan<- struct{}) {
defer close(done)
for p := range progress {
rate := formatBitrate(p.BytesPerSec * bitsPerByte)
if p.ETA > 0 {
log.Infof("%s: %s/%s, %s, ETA %s",
p.Path, humanize.IBytes(safeUint64(p.BytesRead)),
humanize.IBytes(safeUint64(p.TotalBytes)),
rate, p.ETA.Round(time.Second))
} else {
log.Infof("%s: %s/%s, %s",
p.Path, humanize.IBytes(safeUint64(p.BytesRead)),
humanize.IBytes(safeUint64(p.TotalBytes)), rate)
}
}
}
// manifestBaseURL returns the URL of the directory containing the
// manifest, with a trailing slash.
func manifestBaseURL(manifestURL string) (*url.URL, error) {
baseURL, err := url.Parse(manifestURL)
if err != nil {
return nil, fmt.Errorf("fetch: invalid manifest URL: %w", err)
}
baseURL.Path = path.Dir(baseURL.Path)
if !strings.HasSuffix(baseURL.Path, "/") {
baseURL.Path += "/"
}
return baseURL, nil
}
// downloadManifestFiles downloads every file in the manifest, reporting
// progress on the progress channel.
func downloadManifestFiles(
ctx context.Context,
baseURL *url.URL,
files []*mfer.MFFilePath,
progress chan<- DownloadProgress,
) error {
for _, f := range files {
// Sanitize the path to prevent path traversal attacks
localPath, err := sanitizePath(f.GetPath())
if err != nil {
return fmt.Errorf("invalid path in manifest: %w", err)
}
fileURL := baseURL.String() + encodeFilePath(f.GetPath())
log.Infof("fetching %s", f.GetPath())
err = downloadFile(ctx, fileURL, localPath, f, progress)
if err != nil {
return fmt.Errorf("failed to download %s: %w", f.GetPath(), err)
}
}
return nil
}
func (mfa *CLIApp) fetchManifestOperation(ctx *cli.Context) error {
log.Debug("fetchManifestOperation()")
if ctx.Args().Len() == 0 {
return fmt.Errorf("URL argument required")
return errURLRequired
}
inputURL := ctx.Args().Get(0)
manifestURL, err := resolveManifestURL(inputURL)
if err != nil {
return fmt.Errorf("invalid URL: %w", err)
@@ -45,14 +178,16 @@ func (mfa *CLIApp) fetchManifestOperation(ctx *cli.Context) error {
log.Infof("fetching manifest from %s", manifestURL)
// Fetch manifest
resp, err := http.Get(manifestURL)
resp, err := httpGet(ctx.Context, manifestURL)
if err != nil {
return fmt.Errorf("failed to fetch manifest: %w", err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("failed to fetch manifest: HTTP %d", resp.StatusCode)
return fmt.Errorf("failed to fetch manifest: %w %d",
errHTTPStatus, resp.StatusCode)
}
// Parse manifest
@@ -65,74 +200,43 @@ func (mfa *CLIApp) fetchManifestOperation(ctx *cli.Context) error {
log.Infof("manifest contains %d files", len(files))
// Compute base URL (directory containing manifest)
baseURL, err := url.Parse(manifestURL)
baseURL, err := manifestBaseURL(manifestURL)
if err != nil {
return fmt.Errorf("fetch: invalid manifest URL: %w", err)
}
baseURL.Path = path.Dir(baseURL.Path)
if !strings.HasSuffix(baseURL.Path, "/") {
baseURL.Path += "/"
return err
}
// Calculate total bytes to download
var totalBytes int64
for _, f := range files {
totalBytes += f.Size
totalBytes += f.GetSize()
}
// Create progress channel
progress := make(chan DownloadProgress, 10)
// Start progress reporter goroutine
// Create progress channel and start progress reporter goroutine
progress := make(chan DownloadProgress, progressChanBuffer)
done := make(chan struct{})
go func() {
defer close(done)
for p := range progress {
rate := formatBitrate(p.BytesPerSec * 8)
if p.ETA > 0 {
log.Infof("%s: %s/%s, %s, ETA %s",
p.Path, humanize.IBytes(uint64(p.BytesRead)), humanize.IBytes(uint64(p.TotalBytes)),
rate, p.ETA.Round(time.Second))
} else {
log.Infof("%s: %s/%s, %s",
p.Path, humanize.IBytes(uint64(p.BytesRead)), humanize.IBytes(uint64(p.TotalBytes)), rate)
}
}
}()
go reportDownloadProgress(progress, done)
// Track download start time
startTime := time.Now()
// Download each file
for _, f := range files {
// Sanitize the path to prevent path traversal attacks
localPath, err := sanitizePath(f.Path)
if err != nil {
close(progress)
<-done
return fmt.Errorf("invalid path in manifest: %w", err)
}
fileURL := baseURL.String() + encodeFilePath(f.Path)
log.Infof("fetching %s", f.Path)
if err := downloadFile(fileURL, localPath, f, progress); err != nil {
close(progress)
<-done
return fmt.Errorf("failed to download %s: %w", f.Path, err)
}
}
dlErr := downloadManifestFiles(ctx.Context, baseURL, files, progress)
close(progress)
<-done
if dlErr != nil {
return dlErr
}
// Print summary
elapsed := time.Since(startTime)
avgBytesPerSec := float64(totalBytes) / elapsed.Seconds()
avgRate := formatBitrate(avgBytesPerSec * 8)
avgRate := formatBitrate(avgBytesPerSec * bitsPerByte)
log.Infof("downloaded %d files (%s) in %.1fs (%s avg)",
len(files),
humanize.IBytes(uint64(totalBytes)),
humanize.IBytes(safeUint64(totalBytes)),
elapsed.Seconds(),
avgRate)
@@ -145,6 +249,7 @@ func encodeFilePath(p string) string {
for i, seg := range segments {
segments[i] = url.PathEscape(seg)
}
return strings.Join(segments, "/")
}
@@ -153,12 +258,12 @@ func encodeFilePath(p string) string {
func sanitizePath(p string) (string, error) {
// Reject empty paths
if p == "" {
return "", fmt.Errorf("empty path")
return "", errEmptyPath
}
// Reject absolute paths
if filepath.IsAbs(p) {
return "", fmt.Errorf("absolute path not allowed: %s", p)
return "", fmt.Errorf("%w: %s", errAbsolutePath, p)
}
// Clean the path to resolve . and ..
@@ -166,17 +271,46 @@ func sanitizePath(p string) (string, error) {
// Reject paths that escape the current directory
if strings.HasPrefix(cleaned, ".."+string(filepath.Separator)) || cleaned == ".." {
return "", fmt.Errorf("path traversal not allowed: %s", p)
return "", fmt.Errorf("%w: %s", errPathTraversal, p)
}
// Also check for absolute paths after cleaning (handles edge cases)
if filepath.IsAbs(cleaned) {
return "", fmt.Errorf("absolute path not allowed: %s", p)
return "", fmt.Errorf("%w: %s", errAbsolutePath, p)
}
return cleaned, nil
}
// checkNoSymlinks returns an error if any part of the relative path p
// already exists as a symlink. sanitizePath checks p only as text, so
// without this a symlink inside the target directory could send a write
// to p outside of it. Parts that do not exist yet are fine: fetch creates
// them as plain directories and files. Call it immediately before each
// write: a symlink created after it returns is not caught.
func checkNoSymlinks(p string) error {
current := ""
for _, part := range strings.Split(p, string(filepath.Separator)) {
current = filepath.Join(current, part)
info, err := os.Lstat(current)
if errors.Is(err, os.ErrNotExist) {
return nil
}
if err != nil {
return fmt.Errorf("failed to check %s for a symlink: %w", current, err)
}
if info.Mode()&os.ModeSymlink != 0 {
return fmt.Errorf("%w: %s", errSymlinkInPath, current)
}
}
return nil
}
// resolveManifestURL takes a URL and returns the manifest URL.
// If the URL already ends with .mf, it's returned as-is.
// Otherwise, index.mf is appended.
@@ -214,10 +348,14 @@ type progressWriter struct {
func (pw *progressWriter) Write(p []byte) (int, error) {
n, err := pw.w.Write(p)
pw.written += int64(n)
if pw.progress != nil {
var bytesPerSec float64
var eta time.Duration
var (
bytesPerSec float64
eta time.Duration
)
elapsed := time.Since(pw.startTime)
if elapsed > 0 && pw.written > 0 {
bytesPerSec = float64(pw.written) / elapsed.Seconds()
@@ -226,6 +364,7 @@ func (pw *progressWriter) Write(p []byte) (int, error) {
eta = time.Duration(float64(remainingBytes)/bytesPerSec) * time.Second
}
}
sendProgress(pw.progress, DownloadProgress{
Path: pw.path,
BytesRead: pw.written,
@@ -234,18 +373,19 @@ func (pw *progressWriter) Write(p []byte) (int, error) {
ETA: eta,
})
}
return n, err
}
// formatBitrate formats a bits-per-second value with appropriate unit prefix.
func formatBitrate(bps float64) string {
switch {
case bps >= 1e9:
return fmt.Sprintf("%.1f Gbps", bps/1e9)
case bps >= 1e6:
return fmt.Sprintf("%.1f Mbps", bps/1e6)
case bps >= 1e3:
return fmt.Sprintf("%.1f Kbps", bps/1e3)
case bps >= bpsPerGbps:
return fmt.Sprintf("%.1f Gbps", bps/bpsPerGbps)
case bps >= bpsPerMbps:
return fmt.Sprintf("%.1f Mbps", bps/bpsPerMbps)
case bps >= bpsPerKbps:
return fmt.Sprintf("%.1f Kbps", bps/bpsPerKbps)
default:
return fmt.Sprintf("%.0f bps", bps)
}
@@ -259,53 +399,115 @@ func sendProgress(ch chan<- DownloadProgress, p DownloadProgress) {
}
}
// downloadFile downloads a URL to a local file path with hash verification.
// It downloads to a temporary file, verifies the hash, then renames to the final path.
// Progress is reported via the progress channel.
func downloadFile(fileURL, localPath string, entry *mfer.MFFilePath, progress chan<- DownloadProgress) error {
// Create parent directories if needed
// tempPathFor computes the temporary download path for a local file.
// For dotfiles, just append .tmp (they're already hidden); for regular
// files, prefix with . and append .tmp.
func tempPathFor(localPath string) string {
dir := filepath.Dir(localPath)
if dir != "" && dir != "." {
if err := os.MkdirAll(dir, 0o755); err != nil {
return fmt.Errorf("failed to create directory %s: %w", dir, err)
}
}
// Compute temp file path in the same directory
// For dotfiles, just append .tmp (they're already hidden)
// For regular files, prefix with . and append .tmp
base := filepath.Base(localPath)
var tmpName string
if strings.HasPrefix(base, ".") {
tmpName = base + ".tmp"
} else {
tmpName = "." + base + ".tmp"
}
tmpPath := filepath.Join(dir, tmpName)
if dir == "" || dir == "." {
tmpPath = tmpName
return tmpName
}
return filepath.Join(dir, tmpName)
}
// verifyDownloadedHash checks the computed sha256 digest against the
// manifest entry's hashes; at least one must match.
func verifyDownloadedHash(digest []byte, entry *mfer.MFFilePath) error {
computed, err := multihash.Encode(digest, multihash.SHA2_256)
if err != nil {
return fmt.Errorf("failed to encode hash: %w", err)
}
for _, hash := range entry.GetHashes() {
if bytes.Equal(computed, hash.GetMultiHash()) {
return nil
}
}
return errHashMismatch
}
// downloadFile downloads a URL to a local file path with hash verification.
// It downloads to a temporary file, verifies the hash, then renames to the final path.
// Progress is reported via the progress channel.
func downloadFile(
ctx context.Context,
fileURL, localPath string,
entry *mfer.MFFilePath,
progress chan<- DownloadProgress,
) error {
// Enforce the path invariant here rather than relying on the caller,
// so every entry point to downloadFile gets the same treatment.
localPath, err := sanitizePath(localPath)
if err != nil {
return fmt.Errorf("invalid path: %w", err)
}
// Create parent directories if needed
dir := filepath.Dir(localPath)
if dir != "" && dir != "." {
err = checkNoSymlinks(dir)
if err != nil {
return err
}
err = os.MkdirAll(dir, dirPerms)
if err != nil {
return fmt.Errorf("failed to create directory %s: %w", dir, err)
}
}
tmpPath := tempPathFor(localPath)
// Fetch file
resp, err := http.Get(fileURL) //nolint:gosec // URL constructed from manifest base
resp, err := httpGet(ctx, fileURL)
if err != nil {
return fmt.Errorf("HTTP request failed: %w", err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("HTTP %d", resp.StatusCode)
return fmt.Errorf("%w %d", errHTTPStatus, resp.StatusCode)
}
// Determine expected size
expectedSize := entry.Size
expectedSize := entry.GetSize()
totalBytes := resp.ContentLength
if totalBytes < 0 {
totalBytes = expectedSize
}
// Create temp file
out, err := os.Create(tmpPath)
err = checkNoSymlinks(tmpPath)
if err != nil {
return err
}
// Remove whatever is at tmpPath, such as a leftover from an
// interrupted run, rather than write into it: it may be a hard link
// to a file outside the target directory, and removing a hard link
// removes only this name. If the removal fails, O_EXCL below makes
// the create fail.
_ = os.Remove(tmpPath)
// Create the temp file only if nothing is at tmpPath (O_EXCL).
//
// G304: tmpPath is a relative path that sanitizePath keeps inside the
// target directory as text, and checkNoSymlinks just found no symlink
// in it.
out, err := os.OpenFile( //nolint:gosec // G304: see comment above
tmpPath, os.O_RDWR|os.O_CREATE|os.O_EXCL, filePerms)
if err != nil {
return fmt.Errorf("failed to create temp file: %w", err)
}
@@ -328,45 +530,55 @@ func downloadFile(fileURL, localPath string, entry *mfer.MFFilePath, progress ch
// Close file before checking errors (to flush writes)
closeErr := out.Close()
// If copy failed, clean up temp file and return error
if copyErr != nil {
err = finishDownload(
tmpPath, localPath, written, expectedSize, h.Sum(nil), entry,
copyErr, closeErr)
if err != nil {
_ = os.Remove(tmpPath)
return err
}
return nil
}
// finishDownload validates the copy result, verifies size and hash, and
// moves the temp file into place. On error the caller removes tmpPath.
func finishDownload(
tmpPath, localPath string,
written, expectedSize int64,
digest []byte,
entry *mfer.MFFilePath,
copyErr, closeErr error,
) error {
if copyErr != nil {
return copyErr
}
if closeErr != nil {
_ = os.Remove(tmpPath)
return closeErr
}
// Verify size
if written != expectedSize {
_ = os.Remove(tmpPath)
return fmt.Errorf("size mismatch: expected %d bytes, got %d", expectedSize, written)
}
// Encode computed hash as multihash
computed, err := multihash.Encode(h.Sum(nil), multihash.SHA2_256)
if err != nil {
_ = os.Remove(tmpPath)
return fmt.Errorf("failed to encode hash: %w", err)
return fmt.Errorf("%w: expected %d bytes, got %d",
errSizeMismatch, expectedSize, written)
}
// Verify hash against manifest (at least one must match)
hashMatch := false
for _, hash := range entry.Hashes {
if bytes.Equal(computed, hash.MultiHash) {
hashMatch = true
break
err := verifyDownloadedHash(digest, entry)
if err != nil {
return err
}
}
if !hashMatch {
_ = os.Remove(tmpPath)
return fmt.Errorf("hash mismatch")
err = checkNoSymlinks(localPath)
if err != nil {
return err
}
// Rename temp file to final path
if err := os.Rename(tmpPath, localPath); err != nil {
_ = os.Remove(tmpPath)
err = os.Rename(tmpPath, localPath)
if err != nil {
return fmt.Errorf("failed to rename temp file: %w", err)
}
internal/cli/fetch_test.go
+262 -128
View File
@@ -1,3 +1,4 @@
//nolint:testpackage // white-box tests exercise unexported internals
package cli
import (
@@ -16,13 +17,25 @@ import (
"sneak.berlin/go/mfer/mfer"
)
const (
testFileTxt = "file.txt"
testDirFile = "dir/file.txt"
testIndexMF = "https://example.com/path/index.mf"
// Exactly what url.Parse renders, with no wrapper of our own.
urlParseControlCharErr = `parse "http://example.com/\x7f": ` +
`net/url: invalid control character in URL`
)
func TestEncodeFilePath(t *testing.T) {
t.Parallel()
tests := []struct {
input string
expected string
}{
{"file.txt", "file.txt"},
{"dir/file.txt", "dir/file.txt"},
{testFileTxt, testFileTxt},
{testDirFile, testDirFile},
{"my file.txt", "my%20file.txt"},
{"dir/my file.txt", "dir/my%20file.txt"},
{"file#1.txt", "file%231.txt"},
@@ -33,6 +46,8 @@ func TestEncodeFilePath(t *testing.T) {
for _, tt := range tests {
t.Run(tt.input, func(t *testing.T) {
t.Parallel()
result := encodeFilePath(tt.input)
assert.Equal(t, tt.expected, result)
})
@@ -40,23 +55,27 @@ func TestEncodeFilePath(t *testing.T) {
}
func TestSanitizePath(t *testing.T) {
t.Parallel()
// Valid paths that should be accepted
validTests := []struct {
input string
expected string
}{
{"file.txt", "file.txt"},
{"dir/file.txt", "dir/file.txt"},
{testFileTxt, testFileTxt},
{testDirFile, testDirFile},
{"dir/subdir/file.txt", "dir/subdir/file.txt"},
{"./file.txt", "file.txt"},
{"./dir/file.txt", "dir/file.txt"},
{"dir/./file.txt", "dir/file.txt"},
{"./file.txt", testFileTxt},
{"./dir/file.txt", testDirFile},
{"dir/./file.txt", testDirFile},
}
for _, tt := range validTests {
t.Run("valid:"+tt.input, func(t *testing.T) {
t.Parallel()
result, err := sanitizePath(tt.input)
assert.NoError(t, err)
require.NoError(t, err)
assert.Equal(t, tt.expected, result)
})
}
@@ -78,6 +97,8 @@ func TestSanitizePath(t *testing.T) {
for _, tt := range invalidTests {
t.Run("invalid:"+tt.desc, func(t *testing.T) {
t.Parallel()
_, err := sanitizePath(tt.input)
assert.Error(t, err, "expected error for path: %s", tt.input)
})
@@ -85,36 +106,115 @@ func TestSanitizePath(t *testing.T) {
}
func TestResolveManifestURL(t *testing.T) {
t.Parallel()
tests := []struct {
input string
expected string
}{
// Already ends with .mf - use as-is
{"https://example.com/path/index.mf", "https://example.com/path/index.mf"},
{testIndexMF, testIndexMF},
{"https://example.com/path/custom.mf", "https://example.com/path/custom.mf"},
{"https://example.com/foo.mf", "https://example.com/foo.mf"},
// Directory with trailing slash - append index.mf
{"https://example.com/path/", "https://example.com/path/index.mf"},
{"https://example.com/path/", testIndexMF},
{"https://example.com/", "https://example.com/index.mf"},
// Directory without trailing slash - add slash and index.mf
{"https://example.com/path", "https://example.com/path/index.mf"},
{"https://example.com/path", testIndexMF},
{"https://example.com", "https://example.com/index.mf"},
// With query strings
{"https://example.com/path?foo=bar", "https://example.com/path/index.mf?foo=bar"},
{
"https://example.com/path?foo=bar",
"https://example.com/path/index.mf?foo=bar",
},
}
for _, tt := range tests {
t.Run(tt.input, func(t *testing.T) {
t.Parallel()
result, err := resolveManifestURL(tt.input)
assert.NoError(t, err)
require.NoError(t, err)
assert.Equal(t, tt.expected, result)
})
}
// The sole caller wraps this error as "invalid URL: %w", so
// resolveManifestURL must return url.Parse's error unadorned.
t.Run("invalid:control character", func(t *testing.T) {
t.Parallel()
_, err := resolveManifestURL("http://example.com/\x7f")
require.ErrorContains(t, err, urlParseControlCharErr)
assert.NotContains(t, err.Error(), "failed to parse URL")
})
}
// scanToManifest scans sourceFs and returns the serialized manifest bytes.
func scanToManifest(t *testing.T, sourceFs afero.Fs) []byte {
t.Helper()
s := mfer.NewScannerWithOptions(&mfer.ScannerOptions{Fs: sourceFs})
require.NoError(t, s.EnumerateFS(sourceFs, "/", nil))
var manifestBuf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &manifestBuf, nil))
return manifestBuf.Bytes()
}
// chdirTemp switches the working directory to a fresh temp dir for the
// duration of the test and returns its path.
func chdirTemp(t *testing.T) string {
t.Helper()
destDir := t.TempDir()
origDir, err := os.Getwd()
require.NoError(t, err)
require.NoError(t, os.Chdir(destDir))
t.Cleanup(func() { _ = os.Chdir(origDir) })
return destDir
}
// fetchTestHandler serves the manifest at /index.mf and the given files
// at their paths.
func fetchTestHandler(
manifestData []byte, testFiles map[string][]byte,
) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
if path == "/index.mf" {
w.Header().Set("Content-Type", "application/octet-stream")
_, _ = w.Write(manifestData)
return
}
// Strip leading slash
if len(path) > 0 && path[0] == '/' {
path = path[1:]
}
content, exists := testFiles[path]
if !exists {
http.NotFound(w, r)
return
}
w.Header().Set("Content-Type", "application/octet-stream")
_, _ = w.Write(content)
}
}
//nolint:paralleltest // changes the process-global working directory
func TestFetchFromHTTP(t *testing.T) {
// Create source filesystem with test files
sourceFs := afero.NewMemMapFs()
@@ -134,51 +234,14 @@ func TestFetchFromHTTP(t *testing.T) {
}
// Generate manifest using scanner
opts := &mfer.ScannerOptions{
Fs: sourceFs,
}
s := mfer.NewScannerWithOptions(opts)
require.NoError(t, s.EnumerateFS(sourceFs, "/", nil))
var manifestBuf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &manifestBuf, nil))
manifestData := manifestBuf.Bytes()
manifestData := scanToManifest(t, sourceFs)
// Create HTTP server that serves the source filesystem
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
if path == "/index.mf" {
w.Header().Set("Content-Type", "application/octet-stream")
_, _ = w.Write(manifestData)
return
}
// Strip leading slash
if len(path) > 0 && path[0] == '/' {
path = path[1:]
}
content, exists := testFiles[path]
if !exists {
http.NotFound(w, r)
return
}
w.Header().Set("Content-Type", "application/octet-stream")
_, _ = w.Write(content)
}))
server := httptest.NewServer(fetchTestHandler(manifestData, testFiles))
defer server.Close()
// Create destination directory
destDir, err := os.MkdirTemp("", "mfer-fetch-test-*")
require.NoError(t, err)
defer func() { _ = os.RemoveAll(destDir) }()
// Change to dest directory for the test
origDir, err := os.Getwd()
require.NoError(t, err)
require.NoError(t, os.Chdir(destDir))
defer func() { _ = os.Chdir(origDir) }()
// Change to a fresh destination directory for the test
destDir := chdirTemp(t)
// Parse the manifest to get file entries
manifest, err := mfer.NewManifestFromReader(bytes.NewReader(manifestData))
@@ -189,132 +252,125 @@ func TestFetchFromHTTP(t *testing.T) {
// Download each file using downloadFile
progress := make(chan DownloadProgress, 10)
go func() {
for range progress {
// Drain progress channel
for p := range progress {
_ = p // drain progress channel
}
}()
baseURL := server.URL + "/"
for _, f := range files {
localPath, err := sanitizePath(f.Path)
localPath, err := sanitizePath(f.GetPath())
require.NoError(t, err)
fileURL := baseURL + f.Path
err = downloadFile(fileURL, localPath, f, progress)
require.NoError(t, err, "failed to download %s", f.Path)
fileURL := baseURL + f.GetPath()
err = downloadFile(context.Background(), fileURL, localPath, f, progress)
require.NoError(t, err, "failed to download %s", f.GetPath())
}
close(progress)
// Verify downloaded files match originals
for path, expectedContent := range testFiles {
downloadedPath := filepath.Join(destDir, path)
//nolint:gosec // test-controlled path
downloadedContent, err := os.ReadFile(downloadedPath)
require.NoError(t, err, "failed to read downloaded file %s", path)
assert.Equal(t, expectedContent, downloadedContent, "content mismatch for %s", path)
assert.Equal(t, expectedContent, downloadedContent,
"content mismatch for %s", path)
}
}
//nolint:paralleltest // changes the process-global working directory
func TestFetchHashMismatch(t *testing.T) {
// Create source filesystem with a test file
sourceFs := afero.NewMemMapFs()
originalContent := []byte("Original content")
require.NoError(t, afero.WriteFile(sourceFs, "/file.txt", originalContent, 0o644))
// Generate manifest
opts := &mfer.ScannerOptions{Fs: sourceFs}
s := mfer.NewScannerWithOptions(opts)
require.NoError(t, s.EnumerateFS(sourceFs, "/", nil))
// Generate and parse manifest
manifestData := scanToManifest(t, sourceFs)
var manifestBuf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &manifestBuf, nil))
// Parse manifest
manifest, err := mfer.NewManifestFromReader(bytes.NewReader(manifestBuf.Bytes()))
manifest, err := mfer.NewManifestFromReader(bytes.NewReader(manifestData))
require.NoError(t, err)
files := manifest.Files()
require.Len(t, files, 1)
// Create server that serves DIFFERENT content (to trigger hash mismatch)
tamperedContent := []byte("Tampered content!")
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.Header().Set("Content-Type", "application/octet-stream")
_, _ = w.Write(tamperedContent)
}))
defer server.Close()
// Create temp directory
destDir, err := os.MkdirTemp("", "mfer-fetch-hash-test-*")
require.NoError(t, err)
defer func() { _ = os.RemoveAll(destDir) }()
origDir, err := os.Getwd()
require.NoError(t, err)
require.NoError(t, os.Chdir(destDir))
defer func() { _ = os.Chdir(origDir) }()
// Work in a fresh temp directory
chdirTemp(t)
// Try to download - should fail with hash mismatch
err = downloadFile(server.URL+"/file.txt", "file.txt", files[0], nil)
assert.Error(t, err)
err = downloadFile(context.Background(),
server.URL+"/file.txt", testFileTxt, files[0], nil)
require.Error(t, err)
assert.Contains(t, err.Error(), "mismatch")
// Verify temp file was cleaned up
_, err = os.Stat(".file.txt.tmp")
assert.True(t, os.IsNotExist(err), "temp file should be cleaned up on hash mismatch")
assert.True(t, os.IsNotExist(err),
"temp file should be cleaned up on hash mismatch")
// Verify final file was not created
_, err = os.Stat("file.txt")
assert.True(t, os.IsNotExist(err), "final file should not exist on hash mismatch")
_, err = os.Stat(testFileTxt)
assert.True(t, os.IsNotExist(err),
"final file should not exist on hash mismatch")
}
//nolint:paralleltest // changes the process-global working directory
func TestFetchSizeMismatch(t *testing.T) {
// Create source filesystem with a test file
sourceFs := afero.NewMemMapFs()
originalContent := []byte("Original content with specific size")
require.NoError(t, afero.WriteFile(sourceFs, "/file.txt", originalContent, 0o644))
// Generate manifest
opts := &mfer.ScannerOptions{Fs: sourceFs}
s := mfer.NewScannerWithOptions(opts)
require.NoError(t, s.EnumerateFS(sourceFs, "/", nil))
// Generate and parse manifest
manifestData := scanToManifest(t, sourceFs)
var manifestBuf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &manifestBuf, nil))
// Parse manifest
manifest, err := mfer.NewManifestFromReader(bytes.NewReader(manifestBuf.Bytes()))
manifest, err := mfer.NewManifestFromReader(bytes.NewReader(manifestData))
require.NoError(t, err)
files := manifest.Files()
require.Len(t, files, 1)
// Create server that serves content with wrong size
wrongSizeContent := []byte("Short")
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.Header().Set("Content-Type", "application/octet-stream")
_, _ = w.Write(wrongSizeContent)
}))
defer server.Close()
// Create temp directory
destDir, err := os.MkdirTemp("", "mfer-fetch-size-test-*")
require.NoError(t, err)
defer func() { _ = os.RemoveAll(destDir) }()
origDir, err := os.Getwd()
require.NoError(t, err)
require.NoError(t, os.Chdir(destDir))
defer func() { _ = os.Chdir(origDir) }()
// Work in a fresh temp directory
chdirTemp(t)
// Try to download - should fail with size mismatch
err = downloadFile(server.URL+"/file.txt", "file.txt", files[0], nil)
assert.Error(t, err)
err = downloadFile(context.Background(),
server.URL+"/file.txt", testFileTxt, files[0], nil)
require.Error(t, err)
assert.Contains(t, err.Error(), "size mismatch")
// Verify temp file was cleaned up
_, err = os.Stat(".file.txt.tmp")
assert.True(t, os.IsNotExist(err), "temp file should be cleaned up on size mismatch")
assert.True(t, os.IsNotExist(err),
"temp file should be cleaned up on size mismatch")
}
//nolint:paralleltest // changes the process-global working directory
func TestFetchProgress(t *testing.T) {
// Create source filesystem with a larger test file
sourceFs := afero.NewMemMapFs()
@@ -322,22 +378,18 @@ func TestFetchProgress(t *testing.T) {
content := bytes.Repeat([]byte("x"), 100*1024) // 100KB
require.NoError(t, afero.WriteFile(sourceFs, "/large.txt", content, 0o644))
// Generate manifest
opts := &mfer.ScannerOptions{Fs: sourceFs}
s := mfer.NewScannerWithOptions(opts)
require.NoError(t, s.EnumerateFS(sourceFs, "/", nil))
// Generate and parse manifest
manifestData := scanToManifest(t, sourceFs)
var manifestBuf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &manifestBuf, nil))
// Parse manifest
manifest, err := mfer.NewManifestFromReader(bytes.NewReader(manifestBuf.Bytes()))
manifest, err := mfer.NewManifestFromReader(bytes.NewReader(manifestData))
require.NoError(t, err)
files := manifest.Files()
require.Len(t, files, 1)
// Create server that serves the content
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.Header().Set("Content-Type", "application/octet-stream")
w.Header().Set("Content-Length", "102400")
// Write in chunks to allow progress reporting
@@ -346,29 +398,27 @@ func TestFetchProgress(t *testing.T) {
}))
defer server.Close()
// Create temp directory
destDir, err := os.MkdirTemp("", "mfer-fetch-progress-test-*")
require.NoError(t, err)
defer func() { _ = os.RemoveAll(destDir) }()
origDir, err := os.Getwd()
require.NoError(t, err)
require.NoError(t, os.Chdir(destDir))
defer func() { _ = os.Chdir(origDir) }()
// Work in a fresh temp directory
chdirTemp(t)
// Set up progress channel and collect updates
progress := make(chan DownloadProgress, 100)
var progressUpdates []DownloadProgress
done := make(chan struct{})
go func() {
for p := range progress {
progressUpdates = append(progressUpdates, p)
}
close(done)
}()
// Download
err = downloadFile(server.URL+"/large.txt", "large.txt", files[0], progress)
err = downloadFile(context.Background(),
server.URL+"/large.txt", "large.txt", files[0], progress)
close(progress)
<-done
@@ -380,7 +430,8 @@ func TestFetchProgress(t *testing.T) {
// Verify final progress shows complete
if len(progressUpdates) > 0 {
last := progressUpdates[len(progressUpdates)-1]
assert.Equal(t, int64(len(content)), last.BytesRead, "final progress should show all bytes read")
assert.Equal(t, int64(len(content)), last.BytesRead,
"final progress should show all bytes read")
assert.Equal(t, "large.txt", last.Path)
}
@@ -389,3 +440,86 @@ func TestFetchProgress(t *testing.T) {
require.NoError(t, err)
assert.Equal(t, content, downloaded)
}
// TestFetchRefusesSymlinks runs fetch into a destination directory that
// holds a symlink pointing outside it, in each of the three places fetch
// writes: a parent directory, the temp file, and the file itself, which
// the temp file is renamed onto; and once as a directory inside a plain
// directory. The fetch must fail and nothing outside may change.
//
//nolint:paralleltest // changes the process-global working directory
func TestFetchRefusesSymlinks(t *testing.T) {
tests := []struct {
name string
entry string // the manifest's only file
link string // symlink placed in the destination directory
target string // what link points to, relative to the outside directory
}{
{"parent directory", "sub/deeper/file.txt", "sub", "."},
{"directory inside a plain directory", "docs/data/passwd", "docs/data", "."},
{"temp file", testFileTxt, ".file.txt.tmp", "new.txt"},
{"file", testFileTxt, testFileTxt, "new.txt"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
content := []byte("fetched")
sourceFs := afero.NewMemMapFs()
require.NoError(t, sourceFs.MkdirAll(filepath.Dir("/"+tt.entry), 0o755))
require.NoError(t, afero.WriteFile(sourceFs, "/"+tt.entry, content, 0o644))
server := httptest.NewServer(fetchTestHandler(
scanToManifest(t, sourceFs), map[string][]byte{tt.entry: content}))
defer server.Close()
outside := t.TempDir()
chdirTemp(t)
require.NoError(t, os.MkdirAll(filepath.Dir(tt.link), 0o750))
require.NoError(t, os.Symlink(filepath.Join(outside, tt.target), tt.link))
opts := testOpts([]string{testApp, cmdFetch, "-q", server.URL}, afero.NewOsFs())
assert.Equal(t, 1, runCLI(opts))
assert.Contains(t, testStderr(t, opts), "failed to download "+tt.entry+
": symlink in path not allowed: "+tt.link)
written, err := os.ReadDir(outside)
require.NoError(t, err)
assert.Empty(t, written, "fetch wrote outside the destination")
})
}
}
// TestFetchReplacesHardLinkAtTempName runs fetch into a destination
// directory that holds, at the temp file's name, a hard link to a file
// outside it. To fetch that is an ordinary leftover from an interrupted
// earlier run: it must replace it and succeed, and the outside file must
// not change.
//
//nolint:paralleltest // changes the process-global working directory
func TestFetchReplacesHardLinkAtTempName(t *testing.T) {
content := []byte("fetched")
sourceFs := afero.NewMemMapFs()
require.NoError(t, afero.WriteFile(sourceFs, "/"+testFileTxt, content, 0o644))
server := httptest.NewServer(fetchTestHandler(
scanToManifest(t, sourceFs), map[string][]byte{testFileTxt: content}))
defer server.Close()
outsideFile := filepath.Join(t.TempDir(), "secret.txt")
require.NoError(t, os.WriteFile(outsideFile, []byte("outside"), 0o600))
chdirTemp(t)
require.NoError(t, os.Link(outsideFile, ".file.txt.tmp"))
opts := testOpts([]string{testApp, cmdFetch, "-q", server.URL}, afero.NewOsFs())
require.Equal(t, 0, runCLI(opts), testStderr(t, opts))
fetched, err := os.ReadFile(testFileTxt)
require.NoError(t, err)
assert.Equal(t, content, fetched)
outside, err := os.ReadFile(outsideFile) //nolint:gosec // test-controlled path
require.NoError(t, err)
assert.Equal(t, "outside", string(outside), "fetch wrote outside the destination")
}
internal/cli/freshen.go
+430 -201
View File
@@ -1,7 +1,9 @@
package cli
import (
"context"
"crypto/sha256"
"errors"
"fmt"
"io"
"io/fs"
@@ -16,6 +18,19 @@ import (
"sneak.berlin/go/mfer/mfer"
)
const (
// hashBufSize is the read buffer size used when hashing files.
hashBufSize = 64 * 1024
// scanProgressInterval is how many scanned files pass between
// progress updates.
scanProgressInterval = 100
)
// errEntryMissingMtime indicates a manifest entry that carries no
// modification time where one is required to carry it forward unchanged.
var errEntryMissingMtime = errors.New("manifest entry has no mtime")
// FreshenStatus contains progress information for the freshen operation.
type FreshenStatus struct {
Phase string // "scan" or "hash"
@@ -36,87 +51,122 @@ type freshenEntry struct {
existing *mfer.MFFilePath // existing manifest entry if unchanged
}
func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
log.Debug("freshenManifestOperation()")
// freshenScanner walks the filesystem and compares it against the
// entries of an existing manifest.
type freshenScanner struct {
fs afero.Fs
absBase string
manifestBase string
includeDotfiles bool
followSymlinks bool
showProgress bool
existingByPath map[string]*mfer.MFFilePath
basePath := ctx.String("base")
showProgress := ctx.Bool("progress")
includeDotfiles := ctx.Bool("include-dotfiles")
followSymlinks := ctx.Bool("follow-symlinks")
// Find manifest file
var manifestPath string
var err error
if ctx.Args().Len() > 0 {
arg := ctx.Args().Get(0)
info, statErr := mfa.Fs.Stat(arg)
if statErr == nil && info.IsDir() {
manifestPath, err = findManifest(mfa.Fs, arg)
if err != nil {
return fmt.Errorf("freshen: %w", err)
entries []*freshenEntry
scanCount int64
changed int64
added int64
unchanged int64
}
// resolveSymlink resolves a symlink to its target's FileInfo. The
// second return value is false when the entry should be skipped.
func (s *freshenScanner) resolveSymlink(path string) (fs.FileInfo, bool) {
if !s.followSymlinks {
return nil, false
}
realPath, err := filepath.EvalSymlinks(path)
if err != nil {
return nil, false // Skip broken symlinks
}
realInfo, err := s.fs.Stat(realPath)
if err != nil || realInfo.IsDir() {
return nil, false
}
return realInfo, true
}
// recordEntry classifies a scanned file as changed, unchanged, or added
// relative to the existing manifest.
func (s *freshenScanner) recordEntry(relPath string, info fs.FileInfo) {
existing, inManifest := s.existingByPath[relPath]
if !inManifest {
s.added++
log.Verbosef("A %s", relPath)
s.entries = append(s.entries, &freshenEntry{
path: relPath,
size: info.Size(),
mtime: info.ModTime(),
needsHash: true,
})
return
}
// Check if changed (size or mtime). An entry with no recorded mtime
// cannot be compared, so it counts as changed and gets re-hashed;
// silently treating the absent mtime as the Unix epoch would classify
// every such entry as changed without saying why.
existingMtime, haveMtime := entryMtime(existing)
if !haveMtime {
log.Debugf("%s: manifest entry has no mtime, treating as changed",
relPath)
}
if !haveMtime || existing.GetSize() != info.Size() ||
!existingMtime.Equal(info.ModTime()) {
s.changed++
log.Verbosef("M %s", relPath)
s.entries = append(s.entries, &freshenEntry{
path: relPath,
size: info.Size(),
mtime: info.ModTime(),
needsHash: true,
})
} else {
manifestPath = arg
}
} else {
manifestPath, err = findManifest(mfa.Fs, ".")
if err != nil {
return fmt.Errorf("freshen: %w", err)
s.unchanged++
s.entries = append(s.entries, &freshenEntry{
path: relPath,
size: info.Size(),
mtime: info.ModTime(),
needsHash: false,
existing: existing,
})
}
// Mark as seen
delete(s.existingByPath, relPath)
}
log.Infof("loading manifest from %s", manifestPath)
// Load existing manifest
manifest, err := mfer.NewManifestFromFile(mfa.Fs, manifestPath)
if err != nil {
return fmt.Errorf("failed to load manifest: %w", err)
}
existingFiles := manifest.Files()
log.Infof("manifest contains %d files", len(existingFiles))
// Build map of existing entries by path
existingByPath := make(map[string]*mfer.MFFilePath, len(existingFiles))
for _, f := range existingFiles {
existingByPath[f.Path] = f
}
// Phase 1: Scan filesystem
log.Infof("scanning filesystem...")
startScan := time.Now()
var entries []*freshenEntry
var scanCount int64
var removed, changed, added, unchanged int64
absBase, err := filepath.Abs(basePath)
if err != nil {
return fmt.Errorf("freshen: invalid base path: %w", err)
}
err = afero.Walk(mfa.Fs, absBase, func(path string, info fs.FileInfo, walkErr error) error {
// walk is the afero.Walk callback for the scan phase.
func (s *freshenScanner) walk(path string, info fs.FileInfo, walkErr error) error {
if walkErr != nil {
return walkErr
}
// Get relative path
relPath, err := filepath.Rel(absBase, path)
relPath, err := filepath.Rel(s.absBase, path)
if err != nil {
return fmt.Errorf("freshen: failed to compute relative path for %s: %w", path, err)
return fmt.Errorf(
"freshen: failed to compute relative path for %s: %w", path, err)
}
// Skip the manifest file itself
if relPath == filepath.Base(manifestPath) || relPath == "."+filepath.Base(manifestPath) {
if relPath == s.manifestBase || relPath == "."+s.manifestBase {
return nil
}
// Handle dotfiles
if !includeDotfiles && mfer.IsHiddenPath(filepath.ToSlash(relPath)) {
if !s.includeDotfiles && mfer.IsHiddenPath(filepath.ToSlash(relPath)) {
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
@@ -127,104 +177,166 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
// Handle symlinks
if info.Mode()&fs.ModeSymlink != 0 {
if !followSymlinks {
return nil
}
realPath, err := filepath.EvalSymlinks(path)
if err != nil {
return nil // Skip broken symlinks
}
realInfo, err := mfa.Fs.Stat(realPath)
if err != nil || realInfo.IsDir() {
realInfo, keep := s.resolveSymlink(path)
if !keep {
return nil
}
info = realInfo
}
scanCount++
s.scanCount++
// Check against existing manifest
existing, inManifest := existingByPath[relPath]
if inManifest {
// Check if changed (size or mtime)
existingMtime := time.Unix(existing.Mtime.Seconds, int64(existing.Mtime.Nanos))
if existing.Size != info.Size() || !existingMtime.Equal(info.ModTime()) {
changed++
log.Verbosef("M %s", relPath)
entries = append(entries, &freshenEntry{
path: relPath,
size: info.Size(),
mtime: info.ModTime(),
needsHash: true,
})
} else {
unchanged++
entries = append(entries, &freshenEntry{
path: relPath,
size: info.Size(),
mtime: info.ModTime(),
needsHash: false,
existing: existing,
})
}
// Mark as seen
delete(existingByPath, relPath)
} else {
added++
log.Verbosef("A %s", relPath)
entries = append(entries, &freshenEntry{
path: relPath,
size: info.Size(),
mtime: info.ModTime(),
needsHash: true,
})
}
s.recordEntry(relPath, info)
// Report scan progress
if showProgress && scanCount%100 == 0 {
log.Progressf("Scanning: %d files found", scanCount)
if s.showProgress && s.scanCount%scanProgressInterval == 0 {
log.Progressf("Scanning: %d files found", s.scanCount)
}
return nil
})
if showProgress {
log.ProgressDone()
}
// resolveFreshenManifestPath determines the manifest path from the CLI
// arguments, searching directories for a manifest where needed.
func (mfa *CLIApp) resolveFreshenManifestPath(ctx *cli.Context) (string, error) {
if ctx.Args().Len() == 0 {
return findManifest(mfa.Fs, ".")
}
arg := ctx.Args().Get(0)
info, statErr := mfa.Fs.Stat(arg)
if statErr == nil && info.IsDir() {
return findManifest(mfa.Fs, arg)
}
return arg, nil
}
// freshenHasher hashes changed and added files and feeds all entries to
// a manifest builder.
type freshenHasher struct {
fs afero.Fs
absBase string
showProgress bool
totalHashBytes int64
filesToHash int64
startHash time.Time
builder *mfer.Builder
hashedFiles int64
hashedBytes int64
}
// reportProgress renders hashing progress for the current byte count.
func (h *freshenHasher) reportProgress(n int64) {
if !h.showProgress {
return
}
currentBytes := h.hashedBytes + n
elapsed := time.Since(h.startHash)
var (
rate float64
eta time.Duration
)
if elapsed > 0 && currentBytes > 0 {
rate = float64(currentBytes) / elapsed.Seconds()
remaining := h.totalHashBytes - currentBytes
if rate > 0 {
eta = time.Duration(float64(remaining)/rate) * time.Second
}
}
if eta > 0 {
log.Progressf("Hashing: %d/%d files, %s/s, ETA %s",
h.hashedFiles, h.filesToHash, humanize.IBytes(safeRateUint64(rate)),
eta.Round(time.Second))
} else {
log.Progressf("Hashing: %d/%d files, %s/s",
h.hashedFiles, h.filesToHash, humanize.IBytes(safeRateUint64(rate)))
}
}
// processEntry hashes the entry if needed and adds it to the builder.
func (h *freshenHasher) processEntry(e *freshenEntry) error {
if !e.needsHash {
// Use existing entry
err := addExistingToBuilder(h.builder, e.existing)
if err != nil {
return fmt.Errorf("failed to add %s: %w", e.path, err)
}
return nil
}
// Need to read and hash the file
absPath := filepath.Join(h.absBase, e.path)
f, err := h.fs.Open(absPath)
if err != nil {
return fmt.Errorf("failed to open %s: %w", e.path, err)
}
hash, bytesRead, err := hashFile(f, h.reportProgress)
_ = f.Close()
if err != nil {
return fmt.Errorf("failed to scan filesystem: %w", err)
return fmt.Errorf("failed to hash %s: %w", e.path, err)
}
// Remaining entries in existingByPath are removed files
removed = int64(len(existingByPath))
for path := range existingByPath {
log.Verbosef("D %s", path)
h.hashedBytes += bytesRead
h.hashedFiles++
// Add to builder with computed hash
err = addFileToBuilder(h.builder, e.path, e.size, e.mtime, hash)
if err != nil {
return fmt.Errorf("failed to add %s: %w", e.path, err)
}
scanDuration := time.Since(startScan)
log.Infof("scan complete in %s: %d unchanged, %d changed, %d added, %d removed",
scanDuration.Round(time.Millisecond), unchanged, changed, added, removed)
// Calculate total bytes to hash
var totalHashBytes int64
var filesToHash int64
for _, e := range entries {
if e.needsHash {
totalHashBytes += e.size
filesToHash++
}
return nil
}
// Phase 2: Hash changed and new files
if filesToHash > 0 {
log.Infof("hashing %d files (%s)...", filesToHash, humanize.IBytes(uint64(totalHashBytes)))
// writeFreshenedManifest writes the manifest atomically (write to a
// temp file, then rename over the target).
func writeFreshenedManifest(
ctx context.Context, afs afero.Fs, builder *mfer.Builder, manifestPath string,
) error {
tmpPath := manifestPath + ".tmp"
outFile, err := afs.Create(tmpPath)
if err != nil {
return fmt.Errorf("failed to create temp file: %w", err)
}
startHash := time.Now()
var hashedFiles int64
var hashedBytes int64
err = builder.Build(ctx, outFile)
_ = outFile.Close()
if err != nil {
_ = afs.Remove(tmpPath)
return fmt.Errorf("failed to write manifest: %w", err)
}
// Rename temp to final
err = afs.Rename(tmpPath, manifestPath)
if err != nil {
_ = afs.Remove(tmpPath)
return fmt.Errorf("failed to rename manifest: %w", err)
}
return nil
}
// newFreshenBuilder constructs the manifest builder configured from CLI
// flags.
func newFreshenBuilder(ctx *cli.Context) *mfer.Builder {
builder := mfer.NewBuilder()
if ctx.Bool("include-timestamps") {
builder.SetIncludeTimestamps(true)
@@ -238,6 +350,77 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
log.Infof("signing manifest with GPG key: %s", signKey)
}
return builder
}
// freshenScan runs the scan phase against the loaded manifest entries
// and returns the populated scanner and the count of removed files.
func (mfa *CLIApp) freshenScan(
ctx *cli.Context, manifestPath, absBase string,
existingByPath map[string]*mfer.MFFilePath,
) (*freshenScanner, int64, error) {
log.Infof("scanning filesystem...")
startScan := time.Now()
showProgress := ctx.Bool("progress")
scanner := &freshenScanner{
fs: mfa.Fs,
absBase: absBase,
manifestBase: filepath.Base(manifestPath),
includeDotfiles: ctx.Bool("include-dotfiles"),
followSymlinks: ctx.Bool("follow-symlinks"),
showProgress: showProgress,
existingByPath: existingByPath,
}
err := afero.Walk(mfa.Fs, absBase, scanner.walk)
if showProgress {
log.ProgressDone()
}
if err != nil {
return nil, 0, fmt.Errorf("failed to scan filesystem: %w", err)
}
// Remaining entries in existingByPath are removed files
removed := int64(len(existingByPath))
for path := range existingByPath {
log.Verbosef("D %s", path)
}
scanDuration := time.Since(startScan)
log.Infof("scan complete in %s: %d unchanged, %d changed, %d added, %d removed",
scanDuration.Round(time.Millisecond), scanner.unchanged, scanner.changed,
scanner.added, removed)
return scanner, removed, nil
}
// hashTotals returns the total byte count and file count of entries
// that need hashing.
func hashTotals(entries []*freshenEntry) (int64, int64) {
var (
totalHashBytes int64
filesToHash int64
)
for _, e := range entries {
if e.needsHash {
totalHashBytes += e.size
filesToHash++
}
}
return totalHashBytes, filesToHash
}
// runFreshenHash processes every entry through the hasher, aborting if
// the context is canceled.
func runFreshenHash(
ctx *cli.Context, hasher *freshenHasher, entries []*freshenEntry,
) error {
for _, e := range entries {
select {
case <-ctx.Done():
@@ -245,55 +428,91 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
default:
}
if e.needsHash {
// Need to read and hash the file
absPath := filepath.Join(absBase, e.path)
f, err := mfa.Fs.Open(absPath)
err := hasher.processEntry(e)
if err != nil {
return fmt.Errorf("failed to open %s: %w", e.path, err)
return err
}
}
hash, bytesRead, err := hashFile(f, e.size, func(n int64) {
if showProgress {
currentBytes := hashedBytes + n
elapsed := time.Since(startHash)
var rate float64
var eta time.Duration
if elapsed > 0 && currentBytes > 0 {
rate = float64(currentBytes) / elapsed.Seconds()
remaining := totalHashBytes - currentBytes
if rate > 0 {
eta = time.Duration(float64(remaining)/rate) * time.Second
return nil
}
}
if eta > 0 {
log.Progressf("Hashing: %d/%d files, %s/s, ETA %s",
hashedFiles, filesToHash, humanize.IBytes(uint64(rate)), eta.Round(time.Second))
} else {
log.Progressf("Hashing: %d/%d files, %s/s",
hashedFiles, filesToHash, humanize.IBytes(uint64(rate)))
}
}
})
_ = f.Close()
// loadExistingEntries loads the manifest and indexes its file entries
// by path.
func (mfa *CLIApp) loadExistingEntries(
manifestPath string,
) (map[string]*mfer.MFFilePath, error) {
log.Infof("loading manifest from %s", manifestPath)
// Load existing manifest
manifest, err := mfer.NewManifestFromFile(mfa.Fs, manifestPath)
if err != nil {
return fmt.Errorf("failed to hash %s: %w", e.path, err)
return nil, fmt.Errorf("failed to load manifest: %w", err)
}
hashedBytes += bytesRead
hashedFiles++
existingFiles := manifest.Files()
log.Infof("manifest contains %d files", len(existingFiles))
// Add to builder with computed hash
if err := addFileToBuilder(builder, e.path, e.size, e.mtime, hash); err != nil {
return fmt.Errorf("failed to add %s: %w", e.path, err)
// Build map of existing entries by path
existingByPath := make(map[string]*mfer.MFFilePath, len(existingFiles))
for _, f := range existingFiles {
existingByPath[f.GetPath()] = f
}
} else {
// Use existing entry
if err := addExistingToBuilder(builder, e.existing); err != nil {
return fmt.Errorf("failed to add %s: %w", e.path, err)
return existingByPath, nil
}
func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
log.Debug("freshenManifestOperation()")
basePath := ctx.String("base")
showProgress := ctx.Bool("progress")
// Find manifest file
manifestPath, err := mfa.resolveFreshenManifestPath(ctx)
if err != nil {
return fmt.Errorf("freshen: %w", err)
}
existingByPath, err := mfa.loadExistingEntries(manifestPath)
if err != nil {
return err
}
absBase, err := filepath.Abs(basePath)
if err != nil {
return fmt.Errorf("freshen: invalid base path: %w", err)
}
// Phase 1: Scan filesystem
scanner, removed, err := mfa.freshenScan(ctx, manifestPath, absBase,
existingByPath)
if err != nil {
return err
}
// Calculate total bytes to hash
totalHashBytes, filesToHash := hashTotals(scanner.entries)
// Phase 2: Hash changed and new files
if filesToHash > 0 {
log.Infof("hashing %d files (%s)...", filesToHash,
humanize.IBytes(safeUint64(totalHashBytes)))
}
hasher := &freshenHasher{
fs: mfa.Fs,
absBase: absBase,
showProgress: showProgress,
totalHashBytes: totalHashBytes,
filesToHash: filesToHash,
startHash: time.Now(),
builder: newFreshenBuilder(ctx),
}
err = runFreshenHash(ctx, hasher, scanner.entries)
if err != nil {
return err
}
if showProgress && filesToHash > 0 {
@@ -302,65 +521,61 @@ func (mfa *CLIApp) freshenManifestOperation(ctx *cli.Context) error {
// Print summary
log.Infof("freshen complete: %d unchanged, %d changed, %d added, %d removed",
unchanged, changed, added, removed)
scanner.unchanged, scanner.changed, scanner.added, removed)
// Skip writing if nothing changed
if changed == 0 && added == 0 && removed == 0 {
if scanner.changed == 0 && scanner.added == 0 && removed == 0 {
log.Infof("manifest unchanged, skipping write")
return nil
}
// Write updated manifest atomically (write to temp, then rename)
tmpPath := manifestPath + ".tmp"
outFile, err := mfa.Fs.Create(tmpPath)
err = writeFreshenedManifest(ctx.Context, mfa.Fs, hasher.builder, manifestPath)
if err != nil {
return fmt.Errorf("failed to create temp file: %w", err)
}
err = builder.Build(outFile)
_ = outFile.Close()
if err != nil {
_ = mfa.Fs.Remove(tmpPath)
return fmt.Errorf("failed to write manifest: %w", err)
}
// Rename temp to final
if err := mfa.Fs.Rename(tmpPath, manifestPath); err != nil {
_ = mfa.Fs.Remove(tmpPath)
return fmt.Errorf("failed to rename manifest: %w", err)
return err
}
totalDuration := time.Since(mfa.startupTime)
if hashedBytes > 0 {
hashDuration := time.Since(startHash)
hashRate := float64(hashedBytes) / hashDuration.Seconds()
if hasher.hashedBytes > 0 {
hashDuration := time.Since(hasher.startHash)
hashRate := float64(hasher.hashedBytes) / hashDuration.Seconds()
log.Infof("hashed %s in %.1fs (%s/s)",
humanize.IBytes(uint64(hashedBytes)), totalDuration.Seconds(), humanize.IBytes(uint64(hashRate)))
humanize.IBytes(safeUint64(hasher.hashedBytes)),
totalDuration.Seconds(), humanize.IBytes(safeRateUint64(hashRate)))
}
log.Infof("wrote %d files to %s", len(entries), manifestPath)
log.Infof("wrote %d files to %s", len(scanner.entries), manifestPath)
return nil
}
// hashFile reads a file and computes its SHA256 multihash.
// Progress callback is called with bytes read so far.
func hashFile(r io.Reader, size int64, progress func(int64)) ([]byte, int64, error) {
func hashFile(r io.Reader, progress func(int64)) ([]byte, int64, error) {
h := sha256.New()
buf := make([]byte, 64*1024)
buf := make([]byte, hashBufSize)
var total int64
for {
n, err := r.Read(buf)
if n > 0 {
h.Write(buf[:n])
total += int64(n)
if progress != nil {
progress(total)
}
}
if err == io.EOF {
break
}
// Returned unwrapped: the caller renders this as
// "failed to hash <path>: <err>" and adding a second layer here
// would change that message.
if err != nil {
return nil, total, err
}
@@ -375,15 +590,29 @@ func hashFile(r io.Reader, size int64, progress func(int64)) ([]byte, int64, err
}
// addFileToBuilder adds a new file entry to the builder
func addFileToBuilder(b *mfer.Builder, path string, size int64, mtime time.Time, hash []byte) error {
return b.AddFileWithHash(mfer.RelFilePath(path), mfer.FileSize(size), mfer.ModTime(mtime), hash)
func addFileToBuilder(
b *mfer.Builder, path string, size int64, mtime time.Time, hash []byte,
) error {
return b.AddFileWithHash(
mfer.RelFilePath(path), mfer.FileSize(size), mfer.ModTime(mtime), hash)
}
// addExistingToBuilder adds an existing manifest entry to the builder
// addExistingToBuilder adds an existing manifest entry to the builder.
//
// Entries reach this path only when recordEntry classified them as
// unchanged, which requires a recorded mtime, so an absent mtime here is
// an error rather than something to paper over with the Unix epoch.
func addExistingToBuilder(b *mfer.Builder, entry *mfer.MFFilePath) error {
mtime := time.Unix(entry.Mtime.Seconds, int64(entry.Mtime.Nanos))
if len(entry.Hashes) == 0 {
mtime, ok := entryMtime(entry)
if !ok {
return fmt.Errorf("%w: %s", errEntryMissingMtime, entry.GetPath())
}
if len(entry.GetHashes()) == 0 {
return nil
}
return b.AddFileWithHash(mfer.RelFilePath(entry.Path), mfer.FileSize(entry.Size), mfer.ModTime(mtime), entry.Hashes[0].MultiHash)
return b.AddFileWithHash(mfer.RelFilePath(entry.GetPath()),
mfer.FileSize(entry.GetSize()), mfer.ModTime(mtime),
entry.GetHashes()[0].GetMultiHash())
}
internal/cli/freshen_test.go
+146 -28
View File
@@ -1,9 +1,12 @@
//nolint:testpackage // white-box tests exercise unexported internals
package cli
import (
"bytes"
"context"
"os"
"testing"
"time"
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
@@ -11,24 +14,48 @@ import (
"sneak.berlin/go/mfer/mfer"
)
func TestFreshenUnchanged(t *testing.T) {
// Create filesystem with test files
fs := afero.NewMemMapFs()
// stubFileInfo is a minimal fs.FileInfo for exercising recordEntry
// without touching a filesystem.
type stubFileInfo struct {
size int64
mtime time.Time
}
require.NoError(t, fs.MkdirAll("/testdir", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("content1"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/file2.txt", []byte("content2"), 0o644))
func (s stubFileInfo) Name() string { return "stub" }
func (s stubFileInfo) Size() int64 { return s.size }
func (s stubFileInfo) Mode() os.FileMode { return 0 }
func (s stubFileInfo) ModTime() time.Time { return s.mtime }
func (s stubFileInfo) IsDir() bool { return false }
func (s stubFileInfo) Sys() any { return nil }
// setupFreshenDir populates /testdir with two files, scans it, and
// writes the resulting manifest to /testdir/.index.mf.
func setupFreshenDir(t *testing.T, fs afero.Fs) {
t.Helper()
require.NoError(t, fs.MkdirAll(testDir, 0o755))
writeTestFile(t, fs, testFile1, "content1")
writeTestFile(t, fs, "/testdir/file2.txt", "content2")
// Generate initial manifest
opts := &mfer.ScannerOptions{Fs: fs}
s := mfer.NewScannerWithOptions(opts)
require.NoError(t, s.EnumeratePath("/testdir", nil))
require.NoError(t, s.EnumeratePath(testDir, nil))
var manifestBuf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &manifestBuf, nil))
// Write manifest to filesystem
require.NoError(t, afero.WriteFile(fs, "/testdir/.index.mf", manifestBuf.Bytes(), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/.index.mf", manifestBuf.Bytes(), 0o644))
}
func TestFreshenUnchanged(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
setupFreshenDir(t, fs)
// Parse manifest to verify
manifest, err := mfer.NewManifestFromFile(fs, "/testdir/.index.mf")
@@ -37,23 +64,10 @@ func TestFreshenUnchanged(t *testing.T) {
}
func TestFreshenWithChanges(t *testing.T) {
// Create filesystem with test files
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("content1"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/file2.txt", []byte("content2"), 0o644))
// Generate initial manifest
opts := &mfer.ScannerOptions{Fs: fs}
s := mfer.NewScannerWithOptions(opts)
require.NoError(t, s.EnumeratePath("/testdir", nil))
var manifestBuf bytes.Buffer
require.NoError(t, s.ToManifest(context.Background(), &manifestBuf, nil))
// Write manifest to filesystem
require.NoError(t, afero.WriteFile(fs, "/testdir/.index.mf", manifestBuf.Bytes(), 0o644))
setupFreshenDir(t, fs)
// Verify initial manifest has 2 files
manifest, err := mfer.NewManifestFromFile(fs, "/testdir/.index.mf")
@@ -61,17 +75,17 @@ func TestFreshenWithChanges(t *testing.T) {
assert.Len(t, manifest.Files(), 2)
// Add a new file
require.NoError(t, afero.WriteFile(fs, "/testdir/file3.txt", []byte("content3"), 0o644))
writeTestFile(t, fs, "/testdir/file3.txt", "content3")
// Modify file2 (change content and size)
require.NoError(t, afero.WriteFile(fs, "/testdir/file2.txt", []byte("modified content2"), 0o644))
writeTestFile(t, fs, "/testdir/file2.txt", "modified content2")
// Remove file1
require.NoError(t, fs.Remove("/testdir/file1.txt"))
require.NoError(t, fs.Remove(testFile1))
// Note: The freshen operation would need to be run here
// For now, we just verify the test setup is correct
exists, _ := afero.Exists(fs, "/testdir/file1.txt")
exists, _ := afero.Exists(fs, testFile1)
assert.False(t, exists)
exists, _ = afero.Exists(fs, "/testdir/file3.txt")
@@ -80,3 +94,107 @@ func TestFreshenWithChanges(t *testing.T) {
content, _ := afero.ReadFile(fs, "/testdir/file2.txt")
assert.Equal(t, "modified content2", string(content))
}
// TestFreshenRecordEntryMtimePresence pins the behavior of recordEntry
// with respect to MFFilePath.Mtime, which is a message pointer with
// proto3 field presence and may legitimately be absent.
//
// An absent mtime must never be read as time.Unix(0, 0): that value
// never equals a real modification time, so every entry would be
// classified as changed, re-hashed, and the manifest rewritten
// unconditionally - the exact inverse of what freshen is for, and
// silent. An entry with no mtime is therefore "changed" because it
// cannot be compared, not because it looks like it dates from 1970.
func TestFreshenRecordEntryMtimePresence(t *testing.T) {
t.Parallel()
const relPath = "file1.txt"
// The scanned file's mtime is the Unix epoch. If recordEntry ever misreads
// an absent manifest mtime as the epoch, the "absent" case below would
// compare equal to this and be classified unchanged, so the test fails.
mtime := time.Unix(0, 0)
info := stubFileInfo{size: 8, mtime: mtime}
for _, tc := range []struct {
name string
entry *mfer.MFFilePath
needsHash bool
changed int64
unchanged int64
}{
{
name: "matching mtime and size is unchanged",
entry: &mfer.MFFilePath{
Path: relPath,
Size: 8,
Mtime: &mfer.Timestamp{Seconds: mtime.Unix()},
},
needsHash: false,
changed: 0,
unchanged: 1,
},
{
name: "absent mtime is changed, not epoch",
entry: &mfer.MFFilePath{
Path: relPath,
Size: 8,
Mtime: nil,
},
needsHash: true,
changed: 1,
unchanged: 0,
},
} {
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
s := &freshenScanner{
existingByPath: map[string]*mfer.MFFilePath{relPath: tc.entry},
}
s.recordEntry(relPath, info)
require.Len(t, s.entries, 1)
assert.Equal(t, tc.needsHash, s.entries[0].needsHash)
assert.Equal(t, tc.changed, s.changed)
assert.Equal(t, tc.unchanged, s.unchanged)
assert.Zero(t, s.added)
})
}
}
// TestFreshenAddExistingRejectsMissingMtime pins that an entry with no
// mtime is never carried forward into a rebuilt manifest with a
// fabricated epoch timestamp.
func TestFreshenAddExistingRejectsMissingMtime(t *testing.T) {
t.Parallel()
b := mfer.NewBuilder()
entry := &mfer.MFFilePath{
Path: "file1.txt",
Size: 8,
Mtime: nil,
Hashes: []*mfer.MFFileChecksum{
{MultiHash: []byte{0x12, 0x20}},
},
}
err := addExistingToBuilder(b, entry)
require.ErrorIs(t, err, errEntryMissingMtime)
assert.Contains(t, err.Error(), "file1.txt")
}
// TestEntryMtime pins the presence semantics the callers depend on.
func TestEntryMtime(t *testing.T) {
t.Parallel()
got, ok := entryMtime(&mfer.MFFilePath{Mtime: nil})
assert.False(t, ok)
assert.True(t, got.IsZero())
got, ok = entryMtime(&mfer.MFFilePath{
Mtime: &mfer.Timestamp{Seconds: 1_700_000_000, Nanos: 500},
})
assert.True(t, ok)
assert.Equal(t, time.Unix(1_700_000_000, 500), got)
}
internal/cli/gen.go
+182 -78
View File
@@ -1,6 +1,7 @@
package cli
import (
"errors"
"fmt"
"os"
"os/signal"
@@ -16,9 +17,78 @@ import (
"sneak.berlin/go/mfer/mfer"
)
func (mfa *CLIApp) generateManifestOperation(ctx *cli.Context) error {
log.Debug("generateManifestOperation()")
var (
// errPathNotExist indicates an input path that does not exist.
errPathNotExist = errors.New("path does not exist")
// errOutputExists indicates the output file already exists and
// --force was not given. It is wrapped mid-sentence so that the
// rendered message stays exactly as mfer has always printed it.
errOutputExists = errors.New(
"already exists (use --force to overwrite)")
)
// reportEnumProgress renders enumeration progress until the channel
// closes.
func reportEnumProgress(progress <-chan mfer.EnumerateStatus, wg *sync.WaitGroup) {
defer wg.Done()
for status := range progress {
log.Progressf("Enumerating: %d files, %s",
status.FilesFound,
humanize.IBytes(safeUint64(int64(status.BytesFound))))
}
log.ProgressDone()
}
// reportScanProgress renders scan progress until the channel closes.
func reportScanProgress(progress <-chan mfer.ScanStatus, wg *sync.WaitGroup) {
defer wg.Done()
for status := range progress {
if status.ETA > 0 {
log.Progressf("Scanning: %d/%d files, %s/s, ETA %s",
status.ScannedFiles,
status.TotalFiles,
humanize.IBytes(safeRateUint64(status.BytesPerSec)),
status.ETA.Round(time.Second))
} else {
log.Progressf("Scanning: %d/%d files, %s/s",
status.ScannedFiles,
status.TotalFiles,
humanize.IBytes(safeRateUint64(status.BytesPerSec)))
}
}
log.ProgressDone()
}
// collectInputPaths validates the input path arguments and returns them
// as absolute paths.
func (mfa *CLIApp) collectInputPaths(args cli.Args) ([]string, error) {
paths := make([]string, 0, args.Len())
for i := range args.Len() {
inputPath := args.Get(i)
ap, err := filepath.Abs(inputPath)
if err != nil {
return nil, fmt.Errorf("generate: invalid path %q: %w", inputPath, err)
}
// Validate path exists before adding to list
if exists, _ := afero.Exists(mfa.Fs, ap); !exists {
return nil, fmt.Errorf("%w: %s", errPathNotExist, inputPath)
}
log.Debugf("enumerating path: %s", ap)
paths = append(paths, ap)
}
return paths, nil
}
// buildScannerOptions constructs scanner options from the CLI flags.
func (mfa *CLIApp) buildScannerOptions(ctx *cli.Context) *mfer.ScannerOptions {
opts := &mfer.ScannerOptions{
IncludeDotfiles: ctx.Bool("include-dotfiles"),
FollowSymLinks: ctx.Bool("follow-symlinks"),
@@ -29,6 +99,7 @@ func (mfa *CLIApp) generateManifestOperation(ctx *cli.Context) error {
// Set seed for deterministic UUID if provided
if seed := ctx.String("seed"); seed != "" {
opts.Seed = seed
log.Infof("using deterministic seed for manifest UUID")
}
@@ -40,136 +111,167 @@ func (mfa *CLIApp) generateManifestOperation(ctx *cli.Context) error {
log.Infof("signing manifest with GPG key: %s", signKey)
}
s := mfer.NewScannerWithOptions(opts)
// Phase 1: Enumeration - collect paths and stat files
args := ctx.Args()
showProgress := ctx.Bool("progress")
// Set up enumeration progress reporting
var enumProgress chan mfer.EnumerateStatus
var enumWg sync.WaitGroup
if showProgress {
enumProgress = make(chan mfer.EnumerateStatus, 1)
enumWg.Add(1)
go func() {
defer enumWg.Done()
for status := range enumProgress {
log.Progressf("Enumerating: %d files, %s",
status.FilesFound,
humanize.IBytes(uint64(status.BytesFound)))
}
log.ProgressDone()
}()
return opts
}
// enumerateInputs runs the enumeration phase over the argument paths,
// or the current directory when no arguments are given.
func (mfa *CLIApp) enumerateInputs(
s *mfer.Scanner, args cli.Args, enumProgress chan mfer.EnumerateStatus,
) error {
if args.Len() == 0 {
// Default to current directory
if err := s.EnumeratePath(".", enumProgress); err != nil {
return fmt.Errorf("generate: failed to enumerate current directory: %w", err)
}
} else {
// Collect and validate all paths first
paths := make([]string, 0, args.Len())
for i := 0; i < args.Len(); i++ {
inputPath := args.Get(i)
ap, err := filepath.Abs(inputPath)
err := s.EnumeratePath(".", enumProgress)
if err != nil {
return fmt.Errorf("generate: invalid path %q: %w", inputPath, err)
return fmt.Errorf(
"generate: failed to enumerate current directory: %w", err)
}
// Validate path exists before adding to list
if exists, _ := afero.Exists(mfa.Fs, ap); !exists {
return fmt.Errorf("path does not exist: %s", inputPath)
return nil
}
log.Debugf("enumerating path: %s", ap)
paths = append(paths, ap)
// Collect and validate all paths first
paths, err := mfa.collectInputPaths(args)
if err != nil {
return err
}
if err := s.EnumeratePaths(enumProgress, paths...); err != nil {
err = s.EnumeratePaths(enumProgress, paths...)
if err != nil {
return fmt.Errorf("generate: failed to enumerate paths: %w", err)
}
return nil
}
// cleanupOnSignal installs a handler that removes the temp output file
// and exits when the process is interrupted. It returns the signal
// channel so the caller can stop and close it when done.
func (mfa *CLIApp) cleanupOnSignal(outFile afero.File, tmpPath string) chan os.Signal {
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
go func() {
sig, ok := <-sigChan
if !ok || sig == nil {
return // Channel closed normally, not a signal
}
_ = outFile.Close()
_ = mfa.Fs.Remove(tmpPath)
os.Exit(1)
}()
return sigChan
}
// runEnumeratePhase enumerates all input paths with optional progress
// reporting and logs the totals.
func (mfa *CLIApp) runEnumeratePhase(ctx *cli.Context, s *mfer.Scanner) error {
// Set up enumeration progress reporting
var (
enumProgress chan mfer.EnumerateStatus
enumWg sync.WaitGroup
)
if ctx.Bool("progress") {
enumProgress = make(chan mfer.EnumerateStatus, 1)
enumWg.Add(1)
go reportEnumProgress(enumProgress, &enumWg)
}
err := mfa.enumerateInputs(s, ctx.Args(), enumProgress)
if err != nil {
return err
}
enumWg.Wait()
log.Infof("enumerated %d files, %s total", s.FileCount(), humanize.IBytes(uint64(s.TotalBytes())))
log.Infof("enumerated %d files, %s total", s.FileCount(),
humanize.IBytes(safeUint64(int64(s.TotalBytes()))))
return nil
}
func (mfa *CLIApp) generateManifestOperation(ctx *cli.Context) error {
log.Debug("generateManifestOperation()")
s := mfer.NewScannerWithOptions(mfa.buildScannerOptions(ctx))
// Phase 1: Enumeration - collect paths and stat files
err := mfa.runEnumeratePhase(ctx, s)
if err != nil {
return err
}
showProgress := ctx.Bool("progress")
// Check if output file exists
outputPath := ctx.String("output")
if exists, _ := afero.Exists(mfa.Fs, outputPath); exists {
if !ctx.Bool("force") {
return fmt.Errorf("output file %s already exists (use --force to overwrite)", outputPath)
}
if exists, _ := afero.Exists(mfa.Fs, outputPath); exists && !ctx.Bool("force") {
return fmt.Errorf("output file %s %w", outputPath, errOutputExists)
}
// Create temp file for atomic write
tmpPath := outputPath + ".tmp"
outFile, err := mfa.Fs.Create(tmpPath)
if err != nil {
return fmt.Errorf("failed to create temp file: %w", err)
}
// Set up signal handler to clean up temp file on Ctrl-C
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
go func() {
sig, ok := <-sigChan
if !ok || sig == nil {
return // Channel closed normally, not a signal
}
_ = outFile.Close()
_ = mfa.Fs.Remove(tmpPath)
os.Exit(1)
}()
sigChan := mfa.cleanupOnSignal(outFile, tmpPath)
// Clean up temp file on any error or interruption
success := false
defer func() {
signal.Stop(sigChan)
close(sigChan)
_ = outFile.Close()
if !success {
_ = mfa.Fs.Remove(tmpPath)
}
}()
// Phase 2: Scan - read file contents and generate manifest
var scanProgress chan mfer.ScanStatus
var scanWg sync.WaitGroup
var (
scanProgress chan mfer.ScanStatus
scanWg sync.WaitGroup
)
if showProgress {
scanProgress = make(chan mfer.ScanStatus, 1)
scanWg.Add(1)
go func() {
defer scanWg.Done()
for status := range scanProgress {
if status.ETA > 0 {
log.Progressf("Scanning: %d/%d files, %s/s, ETA %s",
status.ScannedFiles,
status.TotalFiles,
humanize.IBytes(uint64(status.BytesPerSec)),
status.ETA.Round(time.Second))
} else {
log.Progressf("Scanning: %d/%d files, %s/s",
status.ScannedFiles,
status.TotalFiles,
humanize.IBytes(uint64(status.BytesPerSec)))
}
}
log.ProgressDone()
}()
go reportScanProgress(scanProgress, &scanWg)
}
err = s.ToManifest(ctx.Context, outFile, scanProgress)
scanWg.Wait()
if err != nil {
return fmt.Errorf("failed to generate manifest: %w", err)
}
// Close file before rename to ensure all data is flushed
if err := outFile.Close(); err != nil {
err = outFile.Close()
if err != nil {
return fmt.Errorf("failed to close temp file: %w", err)
}
// Atomic rename
if err := mfa.Fs.Rename(tmpPath, outputPath); err != nil {
err = mfa.Fs.Rename(tmpPath, outputPath)
if err != nil {
return fmt.Errorf("failed to rename temp file: %w", err)
}
@@ -177,7 +279,9 @@ func (mfa *CLIApp) generateManifestOperation(ctx *cli.Context) error {
elapsed := time.Since(mfa.startupTime).Seconds()
rate := float64(s.TotalBytes()) / elapsed
log.Infof("wrote %d files (%s) to %s in %.1fs (%s/s)", s.FileCount(), humanize.IBytes(uint64(s.TotalBytes())), outputPath, elapsed, humanize.IBytes(uint64(rate)))
log.Infof("wrote %d files (%s) to %s in %.1fs (%s/s)", s.FileCount(),
humanize.IBytes(safeUint64(int64(s.TotalBytes()))), outputPath, elapsed,
humanize.IBytes(safeRateUint64(rate)))
return nil
}
internal/cli/list.go
+11 -3
View File
@@ -25,6 +25,7 @@ func (mfa *CLIApp) listManifestOperation(ctx *cli.Context) error {
if err != nil {
return fmt.Errorf("list: %w", err)
}
defer func() { _ = rc.Close() }()
manifest, err := mfer.NewManifestFromReader(rc)
@@ -42,10 +43,17 @@ func (mfa *CLIApp) listManifestOperation(ctx *cli.Context) error {
for _, f := range files {
if longFormat {
mtime := time.Unix(f.Mtime.Seconds, int64(f.Mtime.Nanos))
_, _ = fmt.Fprintf(mfa.Stdout, "%d\t%s\t%s%s", f.Size, mtime.Format(time.RFC3339), f.Path, lineEnd)
// An entry may legitimately carry no mtime; render that as
// mtimeAbsent rather than as the Unix epoch.
mtimeStr := mtimeAbsent
if mtime, ok := entryMtime(f); ok {
mtimeStr = mtime.Format(time.RFC3339)
}
_, _ = fmt.Fprintf(mfa.Stdout, "%d\t%s\t%s%s",
f.GetSize(), mtimeStr, f.GetPath(), lineEnd)
} else {
_, _ = fmt.Fprintf(mfa.Stdout, "%s%s", f.Path, lineEnd)
_, _ = fmt.Fprintf(mfa.Stdout, "%s%s", f.GetPath(), lineEnd)
}
}
internal/cli/manifest_loader.go
+33 -3
View File
@@ -1,6 +1,8 @@
package cli
import (
"context"
"errors"
"fmt"
"io"
"net/http"
@@ -10,6 +12,17 @@ import (
"github.com/urfave/cli/v2"
)
// manifestFetchTimeout bounds HTTP requests made to fetch a manifest.
const manifestFetchTimeout = 30 * time.Second
// errHTTPStatus indicates an HTTP response with a non-OK status code.
//
// Its text is the literal "HTTP" prefix of the rendered "HTTP <code>"
// message that mfer has always printed, so that wrapping it does not
// change any user-visible output. Match it with errors.Is; do not read
// its message.
var errHTTPStatus = errors.New("HTTP")
// isHTTPURL returns true if the string starts with http:// or https://.
func isHTTPURL(s string) bool {
return strings.HasPrefix(s, "http://") || strings.HasPrefix(s, "https://")
@@ -19,21 +32,35 @@ func isHTTPURL(s string) bool {
// The caller must close the returned reader.
func (mfa *CLIApp) openManifestReader(pathOrURL string) (io.ReadCloser, error) {
if isHTTPURL(pathOrURL) {
client := &http.Client{Timeout: 30 * time.Second}
resp, err := client.Get(pathOrURL) //nolint:gosec // user-provided URL is intentional
client := &http.Client{Timeout: manifestFetchTimeout}
req, err := http.NewRequestWithContext(
context.Background(), http.MethodGet, pathOrURL, nil,
)
if err != nil {
return nil, fmt.Errorf("failed to fetch %s: %w", pathOrURL, err)
}
resp, err := client.Do(req)
if err != nil {
return nil, fmt.Errorf("failed to fetch %s: %w", pathOrURL, err)
}
if resp.StatusCode != http.StatusOK {
_ = resp.Body.Close()
return nil, fmt.Errorf("failed to fetch %s: HTTP %d", pathOrURL, resp.StatusCode)
return nil, fmt.Errorf("failed to fetch %s: %w %d",
pathOrURL, errHTTPStatus, resp.StatusCode)
}
return resp.Body, nil
}
f, err := mfa.Fs.Open(pathOrURL)
if err != nil {
return nil, err
}
return f, nil
}
@@ -46,11 +73,14 @@ func (mfa *CLIApp) resolveManifestArg(ctx *cli.Context) (string, error) {
if isHTTPURL(arg) {
return arg, nil
}
info, statErr := mfa.Fs.Stat(arg)
if statErr == nil && info.IsDir() {
return findManifest(mfa.Fs, arg)
}
return arg, nil
}
return findManifest(mfa.Fs, ".")
}
internal/cli/mfer.go
+175 -73
View File
@@ -1,6 +1,7 @@
package cli
import (
"errors"
"fmt"
"io"
"os"
@@ -12,8 +13,26 @@ import (
"sneak.berlin/go/mfer/mfer"
)
// Command and flag names shared across command definitions and tests.
const (
cmdGenerate = "generate"
cmdCheck = "check"
cmdExport = "export"
cmdFetch = "fetch"
cmdVersion = "version"
flagProgress = "progress"
manifestArgsUsage = "[manifest file]"
)
// errUnknownCommand indicates an unrecognized command argument.
var errUnknownCommand = errors.New("unknown command")
// CLIApp is the main CLI application container. It holds configuration,
// I/O streams, and filesystem abstraction to enable testing and flexibility.
//
//nolint:revive // established name used throughout the codebase and tests
type CLIApp struct {
appname string
version string
@@ -41,34 +60,59 @@ const banner = `
\ \:\ \ \:\ \ \::/ \ \:\
\__\/ \__\/ \__\/ \__\/`
func (mfa *CLIApp) printBanner() {
if log.GetLevel() <= log.InfoLevel {
_, _ = fmt.Fprintln(mfa.Stdout, banner)
_, _ = fmt.Fprintf(mfa.Stdout, " mfer by @sneak: v%s released %s\n", mfer.Version, mfer.ReleaseDate)
_, _ = fmt.Fprintln(mfa.Stdout, " https://sneak.berlin/go/mfer")
}
}
// VersionString returns the version and git revision formatted for display.
func (mfa *CLIApp) VersionString() string {
if mfa.gitrev != "" {
return fmt.Sprintf("%s (%s)", mfer.Version, mfa.gitrev)
}
return mfer.Version
}
func (mfa *CLIApp) setVerbosity(c *cli.Context) {
_, present := os.LookupEnv("MFER_DEBUG")
if present {
log.EnableDebugLogging()
} else if c.Bool("quiet") {
log.SetLevel(log.ErrorLevel)
} else {
log.SetLevelFromVerbosity(c.Count("verbose"))
// printVersion writes the version line shared by the --version flag and the
// version subcommand, so both produce identical output.
func (mfa *CLIApp) printVersion() {
_, _ = fmt.Fprintf(mfa.Stdout, "%s version %s\n", mfa.appname, mfa.VersionString())
}
func (mfa *CLIApp) printBanner() {
if log.GetLevel() <= log.InfoLevel {
_, _ = fmt.Fprintln(mfa.Stdout, banner)
_, _ = fmt.Fprintf(mfa.Stdout,
" mfer by @sneak: v%s released %s\n",
mfer.Version, mfer.ReleaseDate)
_, _ = fmt.Fprintln(mfa.Stdout, " https://sneak.berlin/go/mfer")
}
}
// commonFlags returns the flags shared by most commands (-v, -q)
// setVerbosity sets the log level from -v and -q, given before the subcommand
// name (the root's copies), after it (the subcommand's own copies), or both.
// urfave/cli reads a flag from the nearest command that defines it, so each
// command in the lineage is asked. The highest -v count wins rather than the
// sum, because a subcommand without its own copies reads the root's.
func (mfa *CLIApp) setVerbosity(c *cli.Context) {
_, present := os.LookupEnv("MFER_DEBUG")
verbosity := 0
quiet := false
for _, ctx := range c.Lineage() {
verbosity = max(verbosity, ctx.Count("verbose"))
quiet = quiet || ctx.Bool("quiet")
}
switch {
case present:
log.EnableDebugLogging()
case quiet:
log.SetLevel(log.ErrorLevel)
default:
log.SetLevelFromVerbosity(verbosity)
}
}
// commonFlags returns the -v and -q flags taken by the root and by the
// generate, check, freshen and fetch subcommands.
func commonFlags() []cli.Flag {
return []cli.Flag{
&cli.BoolFlag{
@@ -85,40 +129,15 @@ func commonFlags() []cli.Flag {
}
}
func (mfa *CLIApp) run(args []string) {
mfa.startupTime = time.Now()
if NO_COLOR {
// shoutout to rob pike who thinks it's juvenile
log.DisableStyling()
}
// Configure log package to use our I/O streams
log.SetOutput(mfa.Stdout, mfa.Stderr)
log.Init()
mfa.app = &cli.App{
Name: mfa.appname,
Usage: "Manifest generator",
Version: mfa.VersionString(),
EnableBashCompletion: true,
Writer: mfa.Stdout,
ErrWriter: mfa.Stderr,
Action: func(c *cli.Context) error {
if c.Args().Len() > 0 {
return fmt.Errorf("unknown command %q", c.Args().First())
}
mfa.printBanner()
return cli.ShowAppHelp(c)
},
Commands: []*cli.Command{
{
Name: "generate",
func (mfa *CLIApp) generateCommand() *cli.Command {
return &cli.Command{
Name: cmdGenerate,
Aliases: []string{"gen"},
Usage: "Generate manifest file",
Action: func(c *cli.Context) error {
mfa.setVerbosity(c)
mfa.printBanner()
return mfa.generateManifestOperation(c)
},
Flags: append(commonFlags(),
@@ -145,7 +164,7 @@ func (mfa *CLIApp) run(args []string) {
Usage: "Overwrite output file if it exists",
},
&cli.BoolFlag{
Name: "progress",
Name: flagProgress,
Aliases: []string{"P"},
Usage: "Show progress during enumeration and scanning",
},
@@ -162,17 +181,22 @@ func (mfa *CLIApp) run(args []string) {
},
&cli.BoolFlag{
Name: "include-timestamps",
Usage: "Include createdAt timestamp in manifest (omitted by default for determinism)",
Usage: "Include createdAt timestamp in manifest " +
"(omitted by default for determinism)",
},
),
},
{
Name: "check",
}
}
func (mfa *CLIApp) checkCommand() *cli.Command {
return &cli.Command{
Name: cmdCheck,
Usage: "Validate files using manifest file",
ArgsUsage: "[manifest file]",
ArgsUsage: manifestArgsUsage,
Action: func(c *cli.Context) error {
mfa.setVerbosity(c)
mfa.printBanner()
return mfa.checkManifestOperation(c)
},
Flags: append(commonFlags(),
@@ -183,7 +207,7 @@ func (mfa *CLIApp) run(args []string) {
Usage: "Base directory for resolving relative paths from manifest",
},
&cli.BoolFlag{
Name: "progress",
Name: flagProgress,
Aliases: []string{"P"},
Usage: "Show progress during checking",
},
@@ -198,14 +222,18 @@ func (mfa *CLIApp) run(args []string) {
EnvVars: []string{"MFER_REQUIRE_SIGNATURE"},
},
),
},
{
}
}
func (mfa *CLIApp) freshenCommand() *cli.Command {
return &cli.Command{
Name: "freshen",
Usage: "Update manifest with changed, new, and removed files",
ArgsUsage: "[manifest file]",
ArgsUsage: manifestArgsUsage,
Action: func(c *cli.Context) error {
mfa.setVerbosity(c)
mfa.printBanner()
return mfa.freshenManifestOperation(c)
},
Flags: append(commonFlags(),
@@ -227,7 +255,7 @@ func (mfa *CLIApp) run(args []string) {
Usage: "Include dot (hidden) files (excluded by default)",
},
&cli.BoolFlag{
Name: "progress",
Name: flagProgress,
Aliases: []string{"P"},
Usage: "Show progress during scanning and hashing",
},
@@ -239,31 +267,44 @@ func (mfa *CLIApp) run(args []string) {
},
&cli.BoolFlag{
Name: "include-timestamps",
Usage: "Include createdAt timestamp in manifest (omitted by default for determinism)",
Usage: "Include createdAt timestamp in manifest " +
"(omitted by default for determinism)",
},
),
},
{
Name: "export",
}
}
func (mfa *CLIApp) exportCommand() *cli.Command {
return &cli.Command{
Name: cmdExport,
Usage: "Export manifest contents as JSON",
ArgsUsage: "[manifest file or URL]",
Action: func(c *cli.Context) error {
mfa.setVerbosity(c)
return mfa.exportManifestOperation(c)
},
},
{
Name: "version",
}
}
func (mfa *CLIApp) versionCommand() *cli.Command {
return &cli.Command{
Name: cmdVersion,
Usage: "Show version",
Action: func(c *cli.Context) error {
_, _ = fmt.Fprintln(mfa.Stdout, mfa.VersionString())
Action: func(_ *cli.Context) error {
mfa.printVersion()
return nil
},
},
{
}
}
func (mfa *CLIApp) listCommand() *cli.Command {
return &cli.Command{
Name: "list",
Aliases: []string{"ls"},
Usage: "List files in manifest",
ArgsUsage: "[manifest file]",
ArgsUsage: manifestArgsUsage,
Action: func(c *cli.Context) error {
return mfa.listManifestOperation(c)
},
@@ -278,24 +319,85 @@ func (mfa *CLIApp) run(args []string) {
Usage: "Separate entries with NUL character (for xargs -0)",
},
},
},
{
Name: "fetch",
}
}
func (mfa *CLIApp) fetchCommand() *cli.Command {
return &cli.Command{
Name: cmdFetch,
Usage: "fetch manifest and referenced files",
Action: func(c *cli.Context) error {
mfa.setVerbosity(c)
mfa.printBanner()
return mfa.fetchManifestOperation(c)
},
Flags: commonFlags(),
}
}
func (mfa *CLIApp) run(args []string) {
mfa.startupTime = time.Now()
if NoColor {
// shoutout to rob pike who thinks it's juvenile
log.DisableStyling()
}
// Configure log package to use our I/O streams
log.SetOutput(mfa.Stdout, mfa.Stderr)
log.Init()
// -v means verbose, not version. urfave/cli's built-in version flag
// claims -v by default, which made "mfer -v --version" fail to parse and
// gave -v a different meaning at the root than on the generate, check,
// freshen and fetch subcommands, where it means verbose. Verbose is the
// more common meaning of -v in tools that offer both, so -v means verbose
// at the root too and the version flag takes the capital -V.
// VersionFlag and VersionPrinter are urfave/cli package globals; run() is
// serialized in tests, so assigning them here is safe.
cli.VersionFlag = &cli.BoolFlag{
Name: cmdVersion,
Aliases: []string{"V"},
Usage: "print the version",
}
cli.VersionPrinter = func(_ *cli.Context) { mfa.printVersion() }
mfa.app = &cli.App{
Name: mfa.appname,
Usage: "Manifest generator",
Version: mfa.VersionString(),
EnableBashCompletion: true,
Writer: mfa.Stdout,
ErrWriter: mfa.Stderr,
Flags: commonFlags(),
Action: func(c *cli.Context) error {
if c.Args().Len() > 0 {
return fmt.Errorf("%w %q", errUnknownCommand, c.Args().First())
}
mfa.setVerbosity(c)
mfa.printBanner()
return cli.ShowAppHelp(c)
},
Commands: []*cli.Command{
mfa.generateCommand(),
mfa.checkCommand(),
mfa.freshenCommand(),
mfa.exportCommand(),
mfa.versionCommand(),
mfa.listCommand(),
mfa.fetchCommand(),
},
}
mfa.app.HideVersion = false
err := mfa.app.Run(args)
if err != nil {
mfa.exitCode = 1
log.WithError(err).Debugf("exiting")
log.Errorf("%s", err)
}
}
internal/cli/mtime.go
+28
View File
@@ -0,0 +1,28 @@
package cli
import (
"time"
"sneak.berlin/go/mfer/mfer"
)
// mtimeAbsent is printed in place of a modification time when a manifest
// entry does not carry one.
const mtimeAbsent = "-"
// entryMtime returns the modification time recorded for a manifest entry.
//
// MFFilePath.Mtime is a message pointer with proto3 field presence, so an
// absent mtime is a representable, on-the-wire-valid state. It must never
// be conflated with a recorded mtime of the Unix epoch: callers that
// compare mtimes have to treat "absent" as "unknown", not as
// 1970-01-01T00:00:00Z, or every entry compares as modified. ok reports
// whether an mtime was actually recorded.
func entryMtime(entry *mfer.MFFilePath) (time.Time, bool) {
ts := entry.GetMtime()
if ts == nil {
return time.Time{}, false
}
return time.Unix(ts.GetSeconds(), int64(ts.GetNanos())), true
}
internal/log/log.go
+64 -52
View File
@@ -1,3 +1,5 @@
// Package log provides leveled logging with progress output helpers
// on top of apex/log and pterm.
package log
import (
@@ -52,6 +54,11 @@ func (l Level) String() string {
}
}
// callerSkip is the runtime.Caller stack depth from the public Debug
// helpers to the caller of the log package.
const callerSkip = 2
//nolint:gochecknoglobals // package-level logger state by design
var (
// mu protects the output writers and level
mu sync.RWMutex
@@ -60,7 +67,7 @@ var (
// stderr is the writer for log output
stderr io.Writer = os.Stderr
// currentLevel is our log level (includes Verbose)
currentLevel Level = InfoLevel
currentLevel = InfoLevel
)
// SetOutput configures the output writers for the log package.
@@ -68,8 +75,10 @@ var (
func SetOutput(out, err io.Writer) {
mu.Lock()
defer mu.Unlock()
stdout = out
stderr = err
pterm.SetDefaultOutput(out)
}
@@ -77,6 +86,7 @@ func SetOutput(out, err io.Writer) {
func GetStdout() io.Writer {
mu.RLock()
defer mu.RUnlock()
return stdout
}
@@ -84,6 +94,7 @@ func GetStdout() io.Writer {
func GetStderr() io.Writer {
mu.RLock()
defer mu.RUnlock()
return stderr
}
@@ -91,6 +102,7 @@ func GetStderr() io.Writer {
func DisableStyling() {
pterm.DisableColor()
pterm.DisableStyling()
pterm.Debug.Prefix.Text = ""
pterm.Info.Prefix.Text = ""
pterm.Success.Prefix.Text = ""
@@ -100,11 +112,16 @@ func DisableStyling() {
}
// Init initializes the logger with the CLI handler and default log level.
//
// It reconfigures the process-global apex/log logger under the write lock so
// the global is never mutated while another goroutine holds the read lock to
// read it in emit. Without this, parallel callers (e.g. the test suite) race
// Init's SetLevel/SetHandler against concurrent log calls.
func Init() {
mu.RLock()
w := stderr
mu.RUnlock()
log.SetHandler(acli.New(w))
mu.Lock()
defer mu.Unlock()
log.SetHandler(acli.New(stderr))
log.SetLevel(log.DebugLevel) // Let apex/log pass everything; we filter ourselves
}
@@ -112,110 +129,108 @@ func Init() {
func isEnabled(l Level) bool {
mu.RLock()
defer mu.RUnlock()
return l >= currentLevel
}
// Fatalf logs a formatted message at fatal level.
func Fatalf(format string, args ...interface{}) {
if isEnabled(FatalLevel) {
log.Fatalf(format, args...)
// emit calls fn while holding the read lock if messages at level l are
// enabled. Holding the read lock across the apex/log call keeps the global
// logger from being read while Init reconfigures it under the write lock.
func emit(l Level, fn func()) {
mu.RLock()
defer mu.RUnlock()
if l >= currentLevel {
fn()
}
}
// Fatalf logs a formatted message at fatal level.
func Fatalf(format string, args ...any) {
emit(FatalLevel, func() { log.Fatalf(format, args...) })
}
// Fatal logs a message at fatal level.
func Fatal(arg string) {
if isEnabled(FatalLevel) {
log.Fatal(arg)
}
emit(FatalLevel, func() { log.Fatal(arg) })
}
// Errorf logs a formatted message at error level.
func Errorf(format string, args ...interface{}) {
if isEnabled(ErrorLevel) {
log.Errorf(format, args...)
}
func Errorf(format string, args ...any) {
emit(ErrorLevel, func() { log.Errorf(format, args...) })
}
// Error logs a message at error level.
func Error(arg string) {
if isEnabled(ErrorLevel) {
log.Error(arg)
}
emit(ErrorLevel, func() { log.Error(arg) })
}
// Warnf logs a formatted message at warn level.
func Warnf(format string, args ...interface{}) {
if isEnabled(WarnLevel) {
log.Warnf(format, args...)
}
func Warnf(format string, args ...any) {
emit(WarnLevel, func() { log.Warnf(format, args...) })
}
// Warn logs a message at warn level.
func Warn(arg string) {
if isEnabled(WarnLevel) {
log.Warn(arg)
}
emit(WarnLevel, func() { log.Warn(arg) })
}
// Infof logs a formatted message at info level.
func Infof(format string, args ...interface{}) {
if isEnabled(InfoLevel) {
log.Infof(format, args...)
}
func Infof(format string, args ...any) {
emit(InfoLevel, func() { log.Infof(format, args...) })
}
// Info logs a message at info level.
func Info(arg string) {
if isEnabled(InfoLevel) {
log.Info(arg)
}
emit(InfoLevel, func() { log.Info(arg) })
}
// Verbosef logs a formatted message at verbose level.
func Verbosef(format string, args ...interface{}) {
if isEnabled(VerboseLevel) {
log.Infof(format, args...)
}
func Verbosef(format string, args ...any) {
emit(VerboseLevel, func() { log.Infof(format, args...) })
}
// Verbose logs a message at verbose level.
func Verbose(arg string) {
if isEnabled(VerboseLevel) {
log.Info(arg)
}
emit(VerboseLevel, func() { log.Info(arg) })
}
// Debugf logs a formatted message at debug level with caller location.
func Debugf(format string, args ...interface{}) {
func Debugf(format string, args ...any) {
if isEnabled(DebugLevel) {
DebugReal(fmt.Sprintf(format, args...), 2)
DebugReal(fmt.Sprintf(format, args...), callerSkip)
}
}
// Debug logs a message at debug level with caller location.
func Debug(arg string) {
if isEnabled(DebugLevel) {
DebugReal(arg, 2)
DebugReal(arg, callerSkip)
}
}
// DebugReal logs at debug level with caller info from the specified stack depth.
func DebugReal(arg string, cs int) {
if !isEnabled(DebugLevel) {
mu.RLock()
defer mu.RUnlock()
if DebugLevel < currentLevel {
return
}
_, callerFile, callerLine, ok := runtime.Caller(cs)
if !ok {
return
}
tag := fmt.Sprintf("%s:%d: ", filepath.Base(callerFile), callerLine)
log.Debug(tag + arg)
}
// Dump logs a spew dump of the arguments at debug level.
func Dump(args ...interface{}) {
func Dump(args ...any) {
if isEnabled(DebugLevel) {
DebugReal(spew.Sdump(args...), 2)
DebugReal(spew.Sdump(args...), callerSkip)
}
}
@@ -246,6 +261,7 @@ func SetLevelFromVerbosity(l int) {
func SetLevel(l Level) {
mu.Lock()
defer mu.Unlock()
currentLevel = l
}
@@ -253,17 +269,13 @@ func SetLevel(l Level) {
func GetLevel() Level {
mu.RLock()
defer mu.RUnlock()
return currentLevel
}
// WithError returns a log entry with the error attached.
func WithError(e error) *log.Entry {
return log.Log.WithError(e)
return currentLevel
}
// Progressf prints a progress message that overwrites the current line.
// Use ProgressDone() when progress is complete to move to the next line.
func Progressf(format string, args ...interface{}) {
func Progressf(format string, args ...any) {
pterm.Printf("\r"+format, args...)
}
internal/log/log_test.go
+4 -4
View File
@@ -1,12 +1,12 @@
package log
package log_test
import (
"testing"
"github.com/stretchr/testify/assert"
"sneak.berlin/go/mfer/internal/log"
)
func TestBuild(t *testing.T) {
Init()
assert.True(t, true)
t.Parallel()
log.Init()
}
mfer/builder.go
+82 -32
View File
@@ -1,6 +1,9 @@
// Package mfer implements the mfer manifest file format: building,
// serializing, verifying, and checking manifests of file trees.
package mfer
import (
"context"
"crypto/sha256"
"errors"
"fmt"
@@ -14,6 +17,27 @@ import (
"github.com/multiformats/go-multihash"
)
// readChunkSize is the buffer size used when reading file contents for
// hashing.
const readChunkSize = 64 * 1024
// The errPath* sentinels below are worded as the trailing fragment of the
// message ValidatePath renders, because the offending path is quoted
// before them (`path %q ...`). Wrapping them mid-sentence keeps the
// rendered text exactly as mfer has always printed it. Match them with
// errors.Is rather than by reading their messages.
var (
errPathEmpty = errors.New("path cannot be empty")
errPathNotUTF8 = errors.New("is not valid UTF-8")
errPathBackslash = errors.New("contains backslash; use forward slashes only")
errPathAbsolute = errors.New("is absolute; must be relative")
errPathEmptySegment = errors.New("contains empty segment")
errPathDotDot = errors.New("contains '..' segment")
errSizeMismatch = errors.New("size mismatch")
errNegativeSize = errors.New("size cannot be negative")
errEmptyHash = errors.New("hash cannot be nil or empty")
)
// ValidatePath checks that a file path conforms to manifest path invariants:
// - Must be valid UTF-8
// - Must use forward slashes only (no backslashes)
@@ -23,25 +47,31 @@ import (
// - Must not be empty
func ValidatePath(p string) error {
if p == "" {
return errors.New("path cannot be empty")
return errPathEmpty
}
if !utf8.ValidString(p) {
return fmt.Errorf("path %q is not valid UTF-8", p)
return fmt.Errorf("path %q %w", p, errPathNotUTF8)
}
if strings.ContainsRune(p, '\\') {
return fmt.Errorf("path %q contains backslash; use forward slashes only", p)
return fmt.Errorf("path %q %w", p, errPathBackslash)
}
if strings.HasPrefix(p, "/") {
return fmt.Errorf("path %q is absolute; must be relative", p)
return fmt.Errorf("path %q %w", p, errPathAbsolute)
}
for _, seg := range strings.Split(p, "/") {
if seg == "" {
return fmt.Errorf("path %q contains empty segment", p)
return fmt.Errorf("path %q %w", p, errPathEmptySegment)
}
if seg == ".." {
return fmt.Errorf("path %q contains '..' segment", p)
return fmt.Errorf("path %q %w", p, errPathDotDot)
}
}
return nil
}
@@ -68,11 +98,7 @@ type UnixNanos int32
// Timestamp converts ModTime to a protobuf Timestamp.
func (m ModTime) Timestamp() *Timestamp {
t := time.Time(m)
return &Timestamp{
Seconds: t.Unix(),
Nanos: int32(t.Nanosecond()),
}
return newTimestampFromTime(time.Time(m))
}
// Multihash represents a multihash-encoded file hash (typically SHA2-256).
@@ -93,14 +119,6 @@ type Builder struct {
fixedUUID []byte // if set, use this UUID instead of generating one
}
// SetSeed derives a deterministic UUID from the given seed string.
// The seed is hashed once with SHA-256 and the first 16 bytes are used
// as a fixed UUID for the manifest.
func (b *Builder) SetSeed(seed string) {
hash := sha256.Sum256([]byte(seed))
b.fixedUUID = hash[:16]
}
// NewBuilder creates a new Builder.
func NewBuilder() *Builder {
return &Builder{
@@ -109,6 +127,14 @@ func NewBuilder() *Builder {
}
}
// SetSeed derives a deterministic UUID from the given seed string.
// The seed is hashed once with SHA-256 and the first 16 bytes are used
// as a fixed UUID for the manifest.
func (b *Builder) SetSeed(seed string) {
hash := sha256.Sum256([]byte(seed))
b.fixedUUID = hash[:uuidLength]
}
// AddFile reads file content from reader, computes hashes, and adds to manifest.
// Progress updates are sent to the progress channel (if non-nil) without blocking.
// Returns the number of bytes read.
@@ -119,7 +145,8 @@ func (b *Builder) AddFile(
reader io.Reader,
progress chan<- FileHashProgress,
) (FileSize, error) {
if err := ValidatePath(string(path)); err != nil {
err := ValidatePath(string(path))
if err != nil {
return 0, err
}
@@ -128,7 +155,8 @@ func (b *Builder) AddFile(
// Read file in chunks, updating hash and progress
var totalRead FileSize
buf := make([]byte, 64*1024) // 64KB chunks
buf := make([]byte, readChunkSize)
for {
n, err := reader.Read(buf)
@@ -137,9 +165,11 @@ func (b *Builder) AddFile(
totalRead += FileSize(n)
sendFileHashProgress(progress, FileHashProgress{BytesRead: totalRead})
}
if err == io.EOF {
break
}
if err != nil {
return totalRead, err
}
@@ -147,7 +177,10 @@ func (b *Builder) AddFile(
// Verify actual bytes read matches declared size
if totalRead != size {
return totalRead, fmt.Errorf("size mismatch for %q: declared %d bytes but read %d bytes", path, size, totalRead)
return totalRead, fmt.Errorf(
"%w for %q: declared %d bytes but read %d bytes",
errSizeMismatch, path, size, totalRead,
)
}
// Encode hash as multihash (SHA2-256)
@@ -178,6 +211,7 @@ func sendFileHashProgress(ch chan<- FileHashProgress, p FileHashProgress) {
if ch == nil {
return
}
select {
case ch <- p:
default:
@@ -188,21 +222,30 @@ func sendFileHashProgress(ch chan<- FileHashProgress, p FileHashProgress) {
func (b *Builder) FileCount() int {
b.mu.Lock()
defer b.mu.Unlock()
return len(b.files)
}
// AddFileWithHash adds a file entry with a pre-computed hash.
// This is useful when the hash is already known (e.g., from an existing manifest).
// Returns an error if path is empty, size is negative, or hash is nil/empty.
func (b *Builder) AddFileWithHash(path RelFilePath, size FileSize, mtime ModTime, hash Multihash) error {
if err := ValidatePath(string(path)); err != nil {
func (b *Builder) AddFileWithHash(
path RelFilePath,
size FileSize,
mtime ModTime,
hash Multihash,
) error {
err := ValidatePath(string(path))
if err != nil {
return fmt.Errorf("add file: %w", err)
}
if size < 0 {
return errors.New("size cannot be negative")
return errNegativeSize
}
if len(hash) == 0 {
return errors.New("hash cannot be nil or empty")
return errEmptyHash
}
entry := &MFFilePath{
@@ -217,6 +260,7 @@ func (b *Builder) AddFileWithHash(path RelFilePath, size FileSize, mtime ModTime
b.mu.Lock()
b.files = append(b.files, entry)
b.mu.Unlock()
return nil
}
@@ -225,6 +269,7 @@ func (b *Builder) AddFileWithHash(path RelFilePath, size FileSize, mtime ModTime
func (b *Builder) SetIncludeTimestamps(include bool) {
b.mu.Lock()
defer b.mu.Unlock()
b.includeTimestamps = include
}
@@ -233,17 +278,19 @@ func (b *Builder) SetIncludeTimestamps(include bool) {
func (b *Builder) SetSigningOptions(opts *SigningOptions) {
b.mu.Lock()
defer b.mu.Unlock()
b.signingOptions = opts
}
// Build finalizes the manifest and writes it to the writer.
func (b *Builder) Build(w io.Writer) error {
// Build finalizes the manifest and writes it to the writer. ctx bounds the
// gpg runs that sign the manifest when signing options are set.
func (b *Builder) Build(ctx context.Context, w io.Writer) error {
b.mu.Lock()
defer b.mu.Unlock()
// Sort files by path for deterministic output
sort.Slice(b.files, func(i, j int) bool {
return b.files[i].Path < b.files[j].Path
return b.files[i].GetPath() < b.files[j].GetPath()
})
// Create inner manifest
@@ -263,19 +310,22 @@ func (b *Builder) Build(w io.Writer) error {
}
// Generate outer wrapper
if err := m.generateOuter(); err != nil {
err := m.generateOuter(ctx)
if err != nil {
return fmt.Errorf("build: generate outer: %w", err)
}
// Generate final output
if err := m.generate(); err != nil {
err = m.generate(ctx)
if err != nil {
return fmt.Errorf("build: generate: %w", err)
}
// Write to output
_, err := w.Write(m.output.Bytes())
_, err = w.Write(m.output.Bytes())
if err != nil {
return fmt.Errorf("build: write output: %w", err)
}
return nil
}
mfer/builder_test.go
+170 -44
View File
@@ -1,7 +1,10 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
"bytes"
"context"
"fmt"
"strings"
"testing"
"time"
@@ -10,24 +13,34 @@ import (
"github.com/stretchr/testify/require"
)
const testFileName = "file.txt"
func TestNewBuilder(t *testing.T) {
t.Parallel()
b := NewBuilder()
assert.NotNil(t, b)
assert.Equal(t, 0, b.FileCount())
}
func TestBuilderAddFile(t *testing.T) {
t.Parallel()
b := NewBuilder()
content := []byte("test content")
reader := bytes.NewReader(content)
bytesRead, err := b.AddFile("test.txt", FileSize(len(content)), ModTime(time.Now()), reader, nil)
bytesRead, err := b.AddFile(
"test.txt", FileSize(len(content)), ModTime(time.Now()), reader, nil,
)
require.NoError(t, err)
assert.Equal(t, FileSize(len(content)), bytesRead)
assert.Equal(t, 1, b.FileCount())
}
func TestBuilderAddFileWithHash(t *testing.T) {
t.Parallel()
b := NewBuilder()
hash := make([]byte, 34) // SHA256 multihash is 34 bytes
@@ -37,55 +50,72 @@ func TestBuilderAddFileWithHash(t *testing.T) {
}
func TestBuilderAddFileWithHashValidation(t *testing.T) {
t.Parallel()
t.Run("empty path", func(t *testing.T) {
t.Parallel()
b := NewBuilder()
hash := make([]byte, 34)
err := b.AddFileWithHash("", 100, ModTime(time.Now()), hash)
assert.Error(t, err)
require.Error(t, err)
assert.Contains(t, err.Error(), "path")
})
t.Run("negative size", func(t *testing.T) {
t.Parallel()
b := NewBuilder()
hash := make([]byte, 34)
err := b.AddFileWithHash("test.txt", -1, ModTime(time.Now()), hash)
assert.Error(t, err)
require.Error(t, err)
assert.Contains(t, err.Error(), "size")
})
t.Run("nil hash", func(t *testing.T) {
t.Parallel()
b := NewBuilder()
err := b.AddFileWithHash("test.txt", 100, ModTime(time.Now()), nil)
assert.Error(t, err)
require.Error(t, err)
assert.Contains(t, err.Error(), "hash")
})
t.Run("empty hash", func(t *testing.T) {
t.Parallel()
b := NewBuilder()
err := b.AddFileWithHash("test.txt", 100, ModTime(time.Now()), []byte{})
assert.Error(t, err)
require.Error(t, err)
assert.Contains(t, err.Error(), "hash")
})
t.Run("valid inputs", func(t *testing.T) {
t.Parallel()
b := NewBuilder()
hash := make([]byte, 34)
err := b.AddFileWithHash("test.txt", 100, ModTime(time.Now()), hash)
assert.NoError(t, err)
require.NoError(t, err)
assert.Equal(t, 1, b.FileCount())
})
}
func TestBuilderBuild(t *testing.T) {
t.Parallel()
b := NewBuilder()
content := []byte("test content")
reader := bytes.NewReader(content)
_, err := b.AddFile("test.txt", FileSize(len(content)), ModTime(time.Now()), reader, nil)
_, err := b.AddFile(
"test.txt", FileSize(len(content)), ModTime(time.Now()), reader, nil,
)
require.NoError(t, err)
var buf bytes.Buffer
err = b.Build(&buf)
err = b.Build(context.Background(), &buf)
require.NoError(t, err)
// Should have magic bytes
@@ -93,6 +123,8 @@ func TestBuilderBuild(t *testing.T) {
}
func TestNewTimestampFromTimeExtremeDate(t *testing.T) {
t.Parallel()
// Regression test: newTimestampFromTime used UnixNano() which panics
// for dates outside ~1678-2262. Now uses Nanosecond() which is safe.
tests := []struct {
@@ -107,15 +139,19 @@ func TestNewTimestampFromTimeExtremeDate(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
// Should not panic
ts := newTimestampFromTime(tt.time)
assert.Equal(t, tt.time.Unix(), ts.Seconds)
assert.Equal(t, int32(tt.time.Nanosecond()), ts.Nanos)
assert.Equal(t, tt.time.Unix(), ts.GetSeconds())
assert.Equal(t, tt.time.Nanosecond(), int(ts.GetNanos()))
})
}
}
func TestBuilderDeterministicOutput(t *testing.T) {
t.Parallel()
buildManifest := func() []byte {
b := NewBuilder()
// Use a fixed createdAt and UUID so output is reproducible
@@ -135,24 +171,32 @@ func TestBuilderDeterministicOutput(t *testing.T) {
}
for _, f := range files {
r := bytes.NewReader([]byte(f.content))
_, err := b.AddFile(RelFilePath(f.path), FileSize(len(f.content)), mtime, r, nil)
_, err := b.AddFile(
RelFilePath(f.path), FileSize(len(f.content)), mtime, r, nil,
)
require.NoError(t, err)
}
var buf bytes.Buffer
err := b.Build(&buf)
err := b.Build(context.Background(), &buf)
require.NoError(t, err)
return buf.Bytes()
}
out1 := buildManifest()
out2 := buildManifest()
assert.Equal(t, out1, out2, "two builds with same input should produce byte-identical output")
assert.Equal(t, out1, out2,
"two builds with same input should produce byte-identical output")
}
func TestSetSeedDeterministic(t *testing.T) {
t.Parallel()
b1 := NewBuilder()
b1.SetSeed("test-seed-value")
b2 := NewBuilder()
b2.SetSeed("test-seed-value")
assert.Equal(t, b1.fixedUUID, b2.fixedUUID, "same seed should produce same UUID")
@@ -160,19 +204,24 @@ func TestSetSeedDeterministic(t *testing.T) {
b3 := NewBuilder()
b3.SetSeed("different-seed")
assert.NotEqual(t, b1.fixedUUID, b3.fixedUUID, "different seeds should produce different UUIDs")
assert.NotEqual(t, b1.fixedUUID, b3.fixedUUID,
"different seeds should produce different UUIDs")
}
func TestValidatePath(t *testing.T) {
t.Parallel()
valid := []string{
"file.txt",
testFileName,
"dir/file.txt",
"a/b/c/d.txt",
"file with spaces.txt",
"日本語.txt",
"日本語.txt", //nolint:gosmopolitan // deliberately tests non-ASCII UTF-8 paths
}
for _, p := range valid {
t.Run("valid:"+p, func(t *testing.T) {
t.Parallel()
assert.NoError(t, ValidatePath(p))
})
}
@@ -191,42 +240,54 @@ func TestValidatePath(t *testing.T) {
}
for _, tt := range invalid {
t.Run("invalid:"+tt.desc, func(t *testing.T) {
t.Parallel()
assert.Error(t, ValidatePath(tt.path))
})
}
}
func TestBuilderAddFileSizeMismatch(t *testing.T) {
t.Parallel()
b := NewBuilder()
content := []byte("short")
reader := bytes.NewReader(content)
// Declare wrong size
_, err := b.AddFile("test.txt", FileSize(100), ModTime(time.Now()), reader, nil)
assert.Error(t, err)
require.Error(t, err)
assert.Contains(t, err.Error(), "size mismatch")
}
func TestBuilderAddFileInvalidPath(t *testing.T) {
t.Parallel()
b := NewBuilder()
content := []byte("data")
reader := bytes.NewReader(content)
_, err := b.AddFile("", FileSize(len(content)), ModTime(time.Now()), reader, nil)
assert.Error(t, err)
require.Error(t, err)
reader.Reset(content)
_, err = b.AddFile("/absolute", FileSize(len(content)), ModTime(time.Now()), reader, nil)
_, err = b.AddFile(
"/absolute", FileSize(len(content)), ModTime(time.Now()), reader, nil,
)
assert.Error(t, err)
}
func TestBuilderAddFileWithProgress(t *testing.T) {
t.Parallel()
b := NewBuilder()
content := bytes.Repeat([]byte("x"), 1000)
reader := bytes.NewReader(content)
progress := make(chan FileHashProgress, 100)
bytesRead, err := b.AddFile("test.txt", FileSize(len(content)), ModTime(time.Now()), reader, progress)
bytesRead, err := b.AddFile(
"test.txt", FileSize(len(content)), ModTime(time.Now()), reader, progress,
)
close(progress)
require.NoError(t, err)
assert.Equal(t, FileSize(1000), bytesRead)
@@ -235,12 +296,15 @@ func TestBuilderAddFileWithProgress(t *testing.T) {
for p := range progress {
updates = append(updates, p)
}
assert.NotEmpty(t, updates)
// Last update should show all bytes
assert.Equal(t, FileSize(1000), updates[len(updates)-1].BytesRead)
}
func TestBuilderBuildRoundTrip(t *testing.T) {
t.Parallel()
// Build a manifest, deserialize it, verify all fields survive round-trip
b := NewBuilder()
now := time.Date(2025, 6, 15, 12, 0, 0, 0, time.UTC)
@@ -256,12 +320,14 @@ func TestBuilderBuildRoundTrip(t *testing.T) {
for _, f := range files {
reader := bytes.NewReader(f.content)
_, err := b.AddFile(RelFilePath(f.path), FileSize(len(f.content)), ModTime(now), reader, nil)
_, err := b.AddFile(
RelFilePath(f.path), FileSize(len(f.content)), ModTime(now), reader, nil,
)
require.NoError(t, err)
}
var buf bytes.Buffer
require.NoError(t, b.Build(&buf))
require.NoError(t, b.Build(context.Background(), &buf))
m, err := NewManifestFromReader(&buf)
require.NoError(t, err)
@@ -270,46 +336,80 @@ func TestBuilderBuildRoundTrip(t *testing.T) {
require.Len(t, mfiles, 3)
// Verify sorted order
assert.Equal(t, "alpha.txt", mfiles[0].Path)
assert.Equal(t, "beta/delta.txt", mfiles[1].Path)
assert.Equal(t, "beta/gamma.txt", mfiles[2].Path)
assert.Equal(t, "alpha.txt", mfiles[0].GetPath())
assert.Equal(t, "beta/delta.txt", mfiles[1].GetPath())
assert.Equal(t, "beta/gamma.txt", mfiles[2].GetPath())
// Verify sizes
assert.Equal(t, int64(len("alpha content")), mfiles[0].Size)
assert.Equal(t, int64(len("alpha content")), mfiles[0].GetSize())
// Verify hashes are present
for _, f := range mfiles {
require.NotEmpty(t, f.Hashes, "file %s should have hashes", f.Path)
assert.NotEmpty(t, f.Hashes[0].MultiHash)
require.NotEmpty(t, f.GetHashes(), "file %s should have hashes", f.GetPath())
assert.NotEmpty(t, f.GetHashes()[0].GetMultiHash())
}
}
// A manifest whose payload is larger than one zstd block (128 KiB) is
// written as a frame asking for the writer's whole window, zstdWindowSize,
// which is the most the parser accepts.
func TestBuilderBuildRoundTripLargeManifest(t *testing.T) {
t.Parallel()
hash := make([]byte, 34) // multihash: 2-byte prefix + 32-byte SHA-256
b := NewBuilder()
for i := range 4000 {
path := RelFilePath(fmt.Sprintf("dir/file-%05d.txt", i))
require.NoError(t, b.AddFileWithHash(path, FileSize(i), ModTime{}, hash))
}
var buf bytes.Buffer
require.NoError(t, b.Build(context.Background(), &buf))
m, err := NewManifestFromReader(&buf)
require.NoError(t, err)
require.Greater(t, m.pbOuter.GetSize(), int64(128<<10))
assert.Len(t, m.Files(), 4000)
}
func TestNewManifestFromReaderInvalidMagic(t *testing.T) {
t.Parallel()
_, err := NewManifestFromReader(bytes.NewReader([]byte("NOT_VALID")))
assert.Error(t, err)
require.Error(t, err)
assert.Contains(t, err.Error(), "invalid file format")
}
func TestNewManifestFromReaderEmpty(t *testing.T) {
t.Parallel()
_, err := NewManifestFromReader(bytes.NewReader([]byte{}))
assert.Error(t, err)
}
func TestNewManifestFromReaderTruncated(t *testing.T) {
t.Parallel()
// Just the magic with nothing after
_, err := NewManifestFromReader(bytes.NewReader([]byte(MAGIC)))
assert.Error(t, err)
}
func TestManifestString(t *testing.T) {
t.Parallel()
b := NewBuilder()
content := []byte("test")
reader := bytes.NewReader(content)
_, err := b.AddFile("test.txt", FileSize(len(content)), ModTime(time.Now()), reader, nil)
_, err := b.AddFile(
"test.txt", FileSize(len(content)), ModTime(time.Now()), reader, nil,
)
require.NoError(t, err)
var buf bytes.Buffer
require.NoError(t, b.Build(&buf))
require.NoError(t, b.Build(context.Background(), &buf))
m, err := NewManifestFromReader(&buf)
require.NoError(t, err)
@@ -317,10 +417,13 @@ func TestManifestString(t *testing.T) {
}
func TestBuilderBuildEmpty(t *testing.T) {
t.Parallel()
b := NewBuilder()
var buf bytes.Buffer
err := b.Build(&buf)
err := b.Build(context.Background(), &buf)
require.NoError(t, err)
// Should still produce valid manifest with 0 files
@@ -328,48 +431,69 @@ func TestBuilderBuildEmpty(t *testing.T) {
}
func TestBuilderOmitsCreatedAtByDefault(t *testing.T) {
t.Parallel()
b := NewBuilder()
content := []byte("hello")
_, err := b.AddFile("test.txt", FileSize(len(content)), ModTime(time.Now()), bytes.NewReader(content), nil)
_, err := b.AddFile(
"test.txt", FileSize(len(content)), ModTime(time.Now()),
bytes.NewReader(content), nil,
)
require.NoError(t, err)
var buf bytes.Buffer
require.NoError(t, b.Build(&buf))
require.NoError(t, b.Build(context.Background(), &buf))
m, err := NewManifestFromReader(&buf)
require.NoError(t, err)
assert.Nil(t, m.pbInner.CreatedAt, "createdAt should be nil by default for deterministic output")
assert.Nil(t, m.pbInner.GetCreatedAt(),
"createdAt should be nil by default for deterministic output")
}
func TestBuilderIncludesCreatedAtWhenRequested(t *testing.T) {
t.Parallel()
b := NewBuilder()
b.SetIncludeTimestamps(true)
content := []byte("hello")
_, err := b.AddFile("test.txt", FileSize(len(content)), ModTime(time.Now()), bytes.NewReader(content), nil)
_, err := b.AddFile(
"test.txt", FileSize(len(content)), ModTime(time.Now()),
bytes.NewReader(content), nil,
)
require.NoError(t, err)
var buf bytes.Buffer
require.NoError(t, b.Build(&buf))
require.NoError(t, b.Build(context.Background(), &buf))
m, err := NewManifestFromReader(&buf)
require.NoError(t, err)
assert.NotNil(t, m.pbInner.CreatedAt, "createdAt should be set when IncludeTimestamps is true")
assert.NotNil(t, m.pbInner.GetCreatedAt(),
"createdAt should be set when IncludeTimestamps is true")
}
func TestBuilderDeterministicFileOrder(t *testing.T) {
t.Parallel()
// Two builds with same files in different order should produce same file ordering.
// Note: UUIDs differ per build, so we compare parsed file lists, not raw bytes.
buildAndParse := func(order []string) []*MFFilePath {
b := NewBuilder()
for _, name := range order {
content := []byte("content of " + name)
_, err := b.AddFile(RelFilePath(name), FileSize(len(content)), ModTime(time.Unix(1000, 0)), bytes.NewReader(content), nil)
_, err := b.AddFile(
RelFilePath(name), FileSize(len(content)),
ModTime(time.Unix(1000, 0)), bytes.NewReader(content), nil,
)
require.NoError(t, err)
}
var buf bytes.Buffer
require.NoError(t, b.Build(&buf))
require.NoError(t, b.Build(context.Background(), &buf))
m, err := NewManifestFromReader(&buf)
require.NoError(t, err)
return m.Files()
}
@@ -378,10 +502,12 @@ func TestBuilderDeterministicFileOrder(t *testing.T) {
require.Len(t, files1, 2)
require.Len(t, files2, 2)
for i := range files1 {
assert.Equal(t, files1[i].Path, files2[i].Path)
assert.Equal(t, files1[i].Size, files2[i].Size)
assert.Equal(t, files1[i].GetPath(), files2[i].GetPath())
assert.Equal(t, files1[i].GetSize(), files2[i].GetSize())
}
assert.Equal(t, "a.txt", files1[0].Path)
assert.Equal(t, "b.txt", files1[1].Path)
assert.Equal(t, "a.txt", files1[0].GetPath())
assert.Equal(t, "b.txt", files1[1].GetPath())
}
mfer/checker.go
+112 -80
View File
@@ -14,6 +14,8 @@ import (
"github.com/spf13/afero"
)
var errNoSigningPubKey = errors.New("manifest has no signing public key")
// Result represents the outcome of checking a single file.
type Result struct {
Path RelFilePath // Relative path from manifest
@@ -24,6 +26,7 @@ type Result struct {
// Status represents the verification status of a file.
type Status int
// Verification result statuses reported for each checked file.
const (
StatusOK Status = iota // File matches manifest (size and hash verified)
StatusMissing // File not found on disk
@@ -70,7 +73,8 @@ type Checker struct {
fs afero.Fs
// manifestPaths is a set of paths in the manifest for quick lookup
manifestPaths map[RelFilePath]struct{}
// manifestRelPath is the relative path of the manifest file from basePath (for exclusion)
// manifestRelPath is the relative path of the manifest file from
// basePath (for exclusion)
manifestRelPath RelFilePath
// signature info from the manifest
signature []byte
@@ -97,9 +101,10 @@ func NewChecker(manifestPath string, basePath string, fs afero.Fs) (*Checker, er
}
files := m.Files()
manifestPaths := make(map[RelFilePath]struct{}, len(files))
for _, f := range files {
manifestPaths[RelFilePath(f.Path)] = struct{}{}
manifestPaths[RelFilePath(f.GetPath())] = struct{}{}
}
// Compute manifest's relative path from basePath for exclusion in FindExtraFiles
@@ -107,6 +112,7 @@ func NewChecker(manifestPath string, basePath string, fs afero.Fs) (*Checker, er
if err != nil {
return nil, err
}
manifestRel, err := filepath.Rel(abs, absManifest)
if err != nil {
manifestRel = ""
@@ -118,9 +124,9 @@ func NewChecker(manifestPath string, basePath string, fs afero.Fs) (*Checker, er
fs: fs,
manifestPaths: manifestPaths,
manifestRelPath: RelFilePath(manifestRel),
signature: m.pbOuter.Signature,
signer: m.pbOuter.Signer,
signingPubKey: m.pbOuter.SigningPubKey,
signature: m.pbOuter.GetSignature(),
signer: m.pbOuter.GetSigner(),
signingPubKey: m.pbOuter.GetSigningPubKey(),
}, nil
}
@@ -133,8 +139,9 @@ func (c *Checker) FileCount() FileCount {
func (c *Checker) TotalBytes() FileSize {
var total FileSize
for _, f := range c.files {
total += FileSize(f.Size)
total += FileSize(f.GetSize())
}
return total
}
@@ -148,7 +155,8 @@ func (c *Checker) Signer() []byte {
return c.signer
}
// SigningPubKey returns the signing public key if the manifest is signed, nil otherwise.
// SigningPubKey returns the signing public key if the manifest is signed,
// nil otherwise.
func (c *Checker) SigningPubKey() []byte {
return c.signingPubKey
}
@@ -156,21 +164,27 @@ func (c *Checker) SigningPubKey() []byte {
// ExtractEmbeddedSigningKeyFP imports the manifest's embedded public key into a
// temporary keyring and extracts its fingerprint. This validates the key and
// returns its actual fingerprint from the key material itself.
func (c *Checker) ExtractEmbeddedSigningKeyFP() (string, error) {
func (c *Checker) ExtractEmbeddedSigningKeyFP(ctx context.Context) (string, error) {
if len(c.signingPubKey) == 0 {
return "", errors.New("manifest has no signing public key")
return "", errNoSigningPubKey
}
return gpgExtractPubKeyFingerprint(c.signingPubKey)
return gpgExtractPubKeyFingerprint(ctx, c.signingPubKey)
}
// Check verifies all files against the manifest.
// Results are sent to the results channel as files are checked.
// Progress updates are sent to the progress channel approximately once per second.
// Both channels are closed when the method returns.
func (c *Checker) Check(ctx context.Context, results chan<- Result, progress chan<- CheckStatus) error {
func (c *Checker) Check(
ctx context.Context,
results chan<- Result,
progress chan<- CheckStatus,
) error {
if results != nil {
defer close(results)
}
if progress != nil {
defer close(progress)
}
@@ -178,9 +192,11 @@ func (c *Checker) Check(ctx context.Context, results chan<- Result, progress cha
totalFiles := FileCount(len(c.files))
totalBytes := c.TotalBytes()
var checkedFiles FileCount
var checkedBytes FileSize
var failures FileCount
var (
checkedFiles FileCount
checkedBytes FileSize
failures FileCount
)
startTime := time.Now()
lastProgressTime := time.Now()
@@ -196,6 +212,7 @@ func (c *Checker) Check(ctx context.Context, results chan<- Result, progress cha
if result.Status != StatusOK {
failures++
}
checkedFiles++
if results != nil {
@@ -205,19 +222,12 @@ func (c *Checker) Check(ctx context.Context, results chan<- Result, progress cha
// Send progress at most once per second (rate-limited)
if progress != nil {
now := time.Now()
isLast := checkedFiles == totalFiles
if isLast || now.Sub(lastProgressTime) >= time.Second {
elapsed := time.Since(startTime)
var bytesPerSec float64
var eta time.Duration
if elapsed > 0 && checkedBytes > 0 {
bytesPerSec = float64(checkedBytes) / elapsed.Seconds()
remainingBytes := totalBytes - checkedBytes
if bytesPerSec > 0 {
eta = time.Duration(float64(remainingBytes)/bytesPerSec) * time.Second
}
}
bytesPerSec, eta := computeRateETA(
time.Since(startTime), checkedBytes, totalBytes,
)
sendCheckStatus(progress, CheckStatus{
TotalFiles: totalFiles,
@@ -228,6 +238,7 @@ func (c *Checker) Check(ctx context.Context, results chan<- Result, progress cha
ETA: eta,
Failures: failures,
})
lastProgressTime = now
}
}
@@ -236,59 +247,6 @@ func (c *Checker) Check(ctx context.Context, results chan<- Result, progress cha
return nil
}
func (c *Checker) checkFile(entry *MFFilePath, checkedBytes *FileSize) Result {
absPath := filepath.Join(string(c.basePath), entry.Path)
relPath := RelFilePath(entry.Path)
// Check if file exists
info, err := c.fs.Stat(absPath)
if err != nil {
if errors.Is(err, os.ErrNotExist) || errors.Is(err, afero.ErrFileNotFound) {
return Result{Path: relPath, Status: StatusMissing, Message: "file not found"}
}
return Result{Path: relPath, Status: StatusError, Message: err.Error()}
}
// Check size
if info.Size() != entry.Size {
*checkedBytes += FileSize(info.Size())
return Result{
Path: relPath,
Status: StatusSizeMismatch,
Message: "size mismatch",
}
}
// Open and hash file
f, err := c.fs.Open(absPath)
if err != nil {
return Result{Path: relPath, Status: StatusError, Message: err.Error()}
}
defer func() { _ = f.Close() }()
h := sha256.New()
n, err := io.Copy(h, f)
if err != nil {
return Result{Path: relPath, Status: StatusError, Message: err.Error()}
}
*checkedBytes += FileSize(n)
// Encode as multihash and compare
computed, err := multihash.Encode(h.Sum(nil), multihash.SHA2_256)
if err != nil {
return Result{Path: relPath, Status: StatusError, Message: err.Error()}
}
// Check against all hashes in manifest (at least one must match)
for _, hash := range entry.Hashes {
if bytes.Equal(computed, hash.MultiHash) {
return Result{Path: relPath, Status: StatusOK}
}
}
return Result{Path: relPath, Status: StatusHashMismatch, Message: "hash mismatch"}
}
// FindExtraFiles walks the filesystem and reports files not in the manifest.
// Results are sent to the results channel. The channel is closed when done.
// Hidden files/directories (starting with .) are skipped, as they are excluded
@@ -298,7 +256,7 @@ func (c *Checker) FindExtraFiles(ctx context.Context, results chan<- Result) err
defer close(results)
}
return afero.Walk(c.fs, string(c.basePath), func(walkPath string, info os.FileInfo, err error) error {
walkFn := func(walkPath string, info os.FileInfo, err error) error {
if err != nil {
return err
}
@@ -320,6 +278,7 @@ func (c *Checker) FindExtraFiles(ctx context.Context, results chan<- Result) err
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
@@ -347,7 +306,79 @@ func (c *Checker) FindExtraFiles(ctx context.Context, results chan<- Result) err
}
return nil
})
}
return afero.Walk(c.fs, string(c.basePath), walkFn)
}
func (c *Checker) checkFile(entry *MFFilePath, checkedBytes *FileSize) Result {
// entry.GetPath() is safe to join here: a manifest's entry paths are
// validated against the path invariants when it is loaded (see
// deserializeInner) or built (see Builder.AddFile), so a traversal or
// absolute path can never reach this point.
absPath := filepath.Join(string(c.basePath), entry.GetPath())
relPath := RelFilePath(entry.GetPath())
// Check if file exists
info, err := c.fs.Stat(absPath)
if err != nil {
if errors.Is(err, os.ErrNotExist) || errors.Is(err, afero.ErrFileNotFound) {
return Result{
Path: relPath,
Status: StatusMissing,
Message: "file not found",
}
}
return Result{Path: relPath, Status: StatusError, Message: err.Error()}
}
// Check size
if info.Size() != entry.GetSize() {
*checkedBytes += FileSize(info.Size())
return Result{
Path: relPath,
Status: StatusSizeMismatch,
Message: "size mismatch",
}
}
// Open and hash file
f, err := c.fs.Open(absPath)
if err != nil {
return Result{Path: relPath, Status: StatusError, Message: err.Error()}
}
defer func() { _ = f.Close() }()
h := sha256.New()
n, err := io.Copy(h, f)
if err != nil {
return Result{Path: relPath, Status: StatusError, Message: err.Error()}
}
*checkedBytes += FileSize(n)
// Encode as multihash and compare
computed, err := multihash.Encode(h.Sum(nil), multihash.SHA2_256)
if err != nil {
return Result{Path: relPath, Status: StatusError, Message: err.Error()}
}
// Check against all hashes in manifest (at least one must match)
for _, hash := range entry.GetHashes() {
if bytes.Equal(computed, hash.GetMultiHash()) {
return Result{Path: relPath, Status: StatusOK}
}
}
return Result{
Path: relPath,
Status: StatusHashMismatch,
Message: "hash mismatch",
}
}
// sendCheckStatus sends a status update without blocking.
@@ -355,6 +386,7 @@ func sendCheckStatus(ch chan<- CheckStatus, status CheckStatus) {
if ch == nil {
return
}
select {
case ch <- status:
default:
mfer/checker_test.go
+142 -61
View File
@@ -1,3 +1,4 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
@@ -12,7 +13,15 @@ import (
"github.com/stretchr/testify/require"
)
const (
testFile1 = "file1.txt"
testFile2 = "file2.txt"
testExistsFile = "exists.txt"
)
func TestStatusString(t *testing.T) {
t.Parallel()
tests := []struct {
status Status
expected string
@@ -28,31 +37,41 @@ func TestStatusString(t *testing.T) {
for _, tt := range tests {
t.Run(tt.expected, func(t *testing.T) {
t.Parallel()
assert.Equal(t, tt.expected, tt.status.String())
})
}
}
// createTestManifest creates a manifest file in the filesystem with the given files.
func createTestManifest(t *testing.T, fs afero.Fs, manifestPath string, files map[string][]byte) {
func createTestManifest(
t *testing.T, fs afero.Fs, manifestPath string, files map[string][]byte,
) {
t.Helper()
builder := NewBuilder()
for path, content := range files {
reader := bytes.NewReader(content)
_, err := builder.AddFile(RelFilePath(path), FileSize(len(content)), ModTime(time.Now()), reader, nil)
_, err := builder.AddFile(
RelFilePath(path), FileSize(len(content)), ModTime(time.Now()), reader, nil,
)
require.NoError(t, err)
}
var buf bytes.Buffer
require.NoError(t, builder.Build(&buf))
require.NoError(t, builder.Build(context.Background(), &buf))
require.NoError(t, afero.WriteFile(fs, manifestPath, buf.Bytes(), 0o644))
}
// createFilesOnDisk creates the given files on the filesystem.
func createFilesOnDisk(t *testing.T, fs afero.Fs, basePath string, files map[string][]byte) {
// createFilesOnDisk creates the given files on the filesystem under
// /data.
func createFilesOnDisk(t *testing.T, fs afero.Fs, files map[string][]byte) {
t.Helper()
basePath := "/data"
for path, content := range files {
fullPath := basePath + "/" + path
require.NoError(t, fs.MkdirAll(basePath, 0o755))
@@ -61,11 +80,15 @@ func createFilesOnDisk(t *testing.T, fs afero.Fs, basePath string, files map[str
}
func TestNewChecker(t *testing.T) {
t.Parallel()
t.Run("valid manifest", func(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{
"file1.txt": []byte("hello"),
"file2.txt": []byte("world"),
testFile1: []byte("hello"),
testFile2: []byte("world"),
}
createTestManifest(t, fs, "/manifest.mf", files)
@@ -76,12 +99,16 @@ func TestNewChecker(t *testing.T) {
})
t.Run("missing manifest", func(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
_, err := NewChecker("/nonexistent.mf", "/", fs)
assert.Error(t, err)
})
t.Run("invalid manifest", func(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, afero.WriteFile(fs, "/bad.mf", []byte("not a manifest"), 0o644))
_, err := NewChecker("/bad.mf", "/", fs)
@@ -90,6 +117,8 @@ func TestNewChecker(t *testing.T) {
}
func TestCheckerFileCountAndTotalBytes(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{
"small.txt": []byte("hi"),
@@ -106,13 +135,15 @@ func TestCheckerFileCountAndTotalBytes(t *testing.T) {
}
func TestCheckAllFilesOK(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{
"file1.txt": []byte("content one"),
"file2.txt": []byte("content two"),
testFile1: []byte("content one"),
testFile2: []byte("content two"),
}
createTestManifest(t, fs, "/manifest.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
chk, err := NewChecker("/manifest.mf", "/data", fs)
require.NoError(t, err)
@@ -127,21 +158,24 @@ func TestCheckAllFilesOK(t *testing.T) {
}
assert.Len(t, resultList, 2)
for _, r := range resultList {
assert.Equal(t, StatusOK, r.Status, "file %s should be OK", r.Path)
}
}
func TestCheckMissingFile(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{
"exists.txt": []byte("I exist"),
testExistsFile: []byte("I exist"),
"missing.txt": []byte("I don't exist on disk"),
}
createTestManifest(t, fs, "/manifest.mf", files)
// Only create one file
createFilesOnDisk(t, fs, "/data", map[string][]byte{
"exists.txt": []byte("I exist"),
createFilesOnDisk(t, fs, map[string][]byte{
testExistsFile: []byte("I exist"),
})
chk, err := NewChecker("/manifest.mf", "/data", fs)
@@ -152,13 +186,17 @@ func TestCheckMissingFile(t *testing.T) {
require.NoError(t, err)
var okCount, missingCount int
for r := range results {
switch r.Status {
case StatusOK:
okCount++
case StatusMissing:
missingCount++
assert.Equal(t, RelFilePath("missing.txt"), r.Path)
case StatusSizeMismatch, StatusHashMismatch, StatusExtra, StatusError:
// Not expected in this test; counted assertions below will fail.
}
}
@@ -167,14 +205,16 @@ func TestCheckMissingFile(t *testing.T) {
}
func TestCheckSizeMismatch(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{
"file.txt": []byte("original content"),
testFileName: []byte("original content"),
}
createTestManifest(t, fs, "/manifest.mf", files)
// Create file with different size
createFilesOnDisk(t, fs, "/data", map[string][]byte{
"file.txt": []byte("short"),
createFilesOnDisk(t, fs, map[string][]byte{
testFileName: []byte("short"),
})
chk, err := NewChecker("/manifest.mf", "/data", fs)
@@ -186,21 +226,23 @@ func TestCheckSizeMismatch(t *testing.T) {
r := <-results
assert.Equal(t, StatusSizeMismatch, r.Status)
assert.Equal(t, RelFilePath("file.txt"), r.Path)
assert.Equal(t, RelFilePath(testFileName), r.Path)
}
func TestCheckHashMismatch(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
originalContent := []byte("original content")
files := map[string][]byte{
"file.txt": originalContent,
testFileName: originalContent,
}
createTestManifest(t, fs, "/manifest.mf", files)
// Create file with same size but different content
differentContent := []byte("different contnt") // same length (16 bytes) but different
require.Equal(t, len(originalContent), len(differentContent), "test requires same length")
createFilesOnDisk(t, fs, "/data", map[string][]byte{
"file.txt": differentContent,
require.Len(t, differentContent, len(originalContent), "test requires same length")
createFilesOnDisk(t, fs, map[string][]byte{
testFileName: differentContent,
})
chk, err := NewChecker("/manifest.mf", "/data", fs)
@@ -212,17 +254,19 @@ func TestCheckHashMismatch(t *testing.T) {
r := <-results
assert.Equal(t, StatusHashMismatch, r.Status)
assert.Equal(t, RelFilePath("file.txt"), r.Path)
assert.Equal(t, RelFilePath(testFileName), r.Path)
}
func TestCheckWithProgress(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{
"file1.txt": bytes.Repeat([]byte("a"), 100),
"file2.txt": bytes.Repeat([]byte("b"), 200),
testFile1: bytes.Repeat([]byte("a"), 100),
testFile2: bytes.Repeat([]byte("b"), 200),
}
createTestManifest(t, fs, "/manifest.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
chk, err := NewChecker("/manifest.mf", "/data", fs)
require.NoError(t, err)
@@ -233,9 +277,7 @@ func TestCheckWithProgress(t *testing.T) {
err = chk.Check(context.Background(), results, progress)
require.NoError(t, err)
// Drain results
for range results {
}
// results is fully buffered and closed; no draining needed
// Check progress was sent
var progressUpdates []CheckStatus
@@ -254,14 +296,17 @@ func TestCheckWithProgress(t *testing.T) {
}
func TestCheckContextCancellation(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
// Create many files to ensure we have time to cancel
files := make(map[string][]byte)
for i := 0; i < 100; i++ {
for i := range 100 {
files[string(rune('a'+i%26))+".txt"] = bytes.Repeat([]byte("x"), 1000)
}
createTestManifest(t, fs, "/manifest.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
chk, err := NewChecker("/manifest.mf", "/data", fs)
require.NoError(t, err)
@@ -275,17 +320,19 @@ func TestCheckContextCancellation(t *testing.T) {
}
func TestFindExtraFiles(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
// Manifest only contains file1
manifestFiles := map[string][]byte{
"file1.txt": []byte("in manifest"),
testFile1: []byte("in manifest"),
}
createTestManifest(t, fs, "/manifest.mf", manifestFiles)
// Disk has file1 and file2
createFilesOnDisk(t, fs, "/data", map[string][]byte{
"file1.txt": []byte("in manifest"),
"file2.txt": []byte("extra file"),
createFilesOnDisk(t, fs, map[string][]byte{
testFile1: []byte("in manifest"),
testFile2: []byte("extra file"),
})
chk, err := NewChecker("/manifest.mf", "/data", fs)
@@ -301,19 +348,21 @@ func TestFindExtraFiles(t *testing.T) {
}
assert.Len(t, extras, 1)
assert.Equal(t, RelFilePath("file2.txt"), extras[0].Path)
assert.Equal(t, RelFilePath(testFile2), extras[0].Path)
assert.Equal(t, StatusExtra, extras[0].Status)
assert.Equal(t, "not in manifest", extras[0].Message)
}
func TestFindExtraFilesSkipsManifestAndDotfiles(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
manifestFiles := map[string][]byte{
"file1.txt": []byte("in manifest"),
testFile1: []byte("in manifest"),
}
createTestManifest(t, fs, "/data/.index.mf", manifestFiles)
createFilesOnDisk(t, fs, "/data", map[string][]byte{
"file1.txt": []byte("in manifest"),
createFilesOnDisk(t, fs, map[string][]byte{
testFile1: []byte("in manifest"),
})
// Create dotfile and manifest that should be skipped
require.NoError(t, afero.WriteFile(fs, "/data/.hidden", []byte("hidden"), 0o644))
@@ -338,17 +387,21 @@ func TestFindExtraFilesSkipsManifestAndDotfiles(t *testing.T) {
for _, e := range extras {
t.Logf("extra: %s", e.Path)
}
assert.Len(t, extras, 1)
if len(extras) > 0 {
assert.Equal(t, RelFilePath("extra.txt"), extras[0].Path)
}
}
func TestFindExtraFilesContextCancellation(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{"file.txt": []byte("data")}
files := map[string][]byte{testFileName: []byte("data")}
createTestManifest(t, fs, "/manifest.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
chk, err := NewChecker("/manifest.mf", "/data", fs)
require.NoError(t, err)
@@ -362,10 +415,12 @@ func TestFindExtraFilesContextCancellation(t *testing.T) {
}
func TestCheckNilChannels(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{"file.txt": []byte("data")}
files := map[string][]byte{testFileName: []byte("data")}
createTestManifest(t, fs, "/manifest.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
chk, err := NewChecker("/manifest.mf", "/data", fs)
require.NoError(t, err)
@@ -376,10 +431,12 @@ func TestCheckNilChannels(t *testing.T) {
}
func TestFindExtraFilesNilChannel(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{"file.txt": []byte("data")}
files := map[string][]byte{testFileName: []byte("data")}
createTestManifest(t, fs, "/manifest.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
chk, err := NewChecker("/manifest.mf", "/data", fs)
require.NoError(t, err)
@@ -390,6 +447,8 @@ func TestFindExtraFilesNilChannel(t *testing.T) {
}
func TestCheckSubdirectories(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
files := map[string][]byte{
"dir1/file1.txt": []byte("content1"),
@@ -401,6 +460,7 @@ func TestCheckSubdirectories(t *testing.T) {
// Create files with full directory structure
for path, content := range files {
fullPath := "/data/" + path
require.NoError(t, fs.MkdirAll("/data/dir1/dir2/dir3", 0o755))
require.NoError(t, afero.WriteFile(fs, fullPath, content, 0o644))
}
@@ -413,25 +473,30 @@ func TestCheckSubdirectories(t *testing.T) {
require.NoError(t, err)
var okCount int
for r := range results {
assert.Equal(t, StatusOK, r.Status, "file %s should be OK", r.Path)
okCount++
}
assert.Equal(t, 3, okCount)
}
func TestCheckMissingFileDetectedWithoutFallback(t *testing.T) {
t.Parallel()
// Regression test: errors.Is(err, errors.New("...")) never matches because
// errors.New creates a new value each time. The fix uses os.ErrNotExist instead.
fs := afero.NewMemMapFs()
files := map[string][]byte{
"exists.txt": []byte("here"),
testExistsFile: []byte("here"),
"missing.txt": []byte("not on disk"),
}
createTestManifest(t, fs, "/manifest.mf", files)
// Only create one file on disk
createFilesOnDisk(t, fs, "/data", map[string][]byte{
"exists.txt": []byte("here"),
createFilesOnDisk(t, fs, map[string][]byte{
testExistsFile: []byte("here"),
})
chk, err := NewChecker("/manifest.mf", "/data", fs)
@@ -448,25 +513,29 @@ func TestCheckMissingFileDetectedWithoutFallback(t *testing.T) {
assert.Equal(t, RelFilePath("missing.txt"), r.Path)
}
}
assert.Equal(t, 1, statusCounts[StatusOK], "one file should be OK")
assert.Equal(t, 1, statusCounts[StatusMissing], "one file should be MISSING")
assert.Equal(t, 0, statusCounts[StatusError], "no files should be ERROR")
}
func TestFindExtraFilesSkipsDotfiles(t *testing.T) {
t.Parallel()
// Regression test for #16: FindExtraFiles should not report dotfiles
// or the manifest file itself as extra files.
fs := afero.NewMemMapFs()
files := map[string][]byte{
"file1.txt": []byte("in manifest"),
testFile1: []byte("in manifest"),
}
createTestManifest(t, fs, "/data/.index.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
// Add dotfiles and manifest file on disk
require.NoError(t, afero.WriteFile(fs, "/data/.hidden", []byte("dotfile"), 0o644))
require.NoError(t, fs.MkdirAll("/data/.git", 0o755))
require.NoError(t, afero.WriteFile(fs, "/data/.git/config", []byte("git config"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/data/.git/config", []byte("git config"), 0o644))
chk, err := NewChecker("/data/.index.mf", "/data", fs)
require.NoError(t, err)
@@ -481,17 +550,21 @@ func TestFindExtraFilesSkipsDotfiles(t *testing.T) {
}
// Should report NO extra files — dotfiles and manifest should be skipped
assert.Empty(t, extras, "FindExtraFiles should not report dotfiles or manifest file as extra; got: %v", extras)
assert.Empty(t, extras,
"FindExtraFiles should not report dotfiles or manifest file as extra; got: %v",
extras)
}
func TestFindExtraFilesSkipsManifestFile(t *testing.T) {
t.Parallel()
// The manifest file itself should never be reported as extra
fs := afero.NewMemMapFs()
files := map[string][]byte{
"file1.txt": []byte("content"),
testFile1: []byte("content"),
}
createTestManifest(t, fs, "/data/index.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
chk, err := NewChecker("/data/index.mf", "/data", fs)
require.NoError(t, err)
@@ -505,10 +578,13 @@ func TestFindExtraFilesSkipsManifestFile(t *testing.T) {
extras = append(extras, r)
}
assert.Empty(t, extras, "manifest file should not be reported as extra; got: %v", extras)
assert.Empty(t, extras,
"manifest file should not be reported as extra; got: %v", extras)
}
func TestCheckEmptyManifest(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
// Create manifest with no files
createTestManifest(t, fs, "/manifest.mf", map[string][]byte{})
@@ -527,21 +603,26 @@ func TestCheckEmptyManifest(t *testing.T) {
for range results {
count++
}
assert.Equal(t, 0, count)
}
func TestCheckProgressRateLimited(t *testing.T) {
t.Parallel()
// Create many small files - progress should be rate-limited, not one per file.
// With rate-limiting to once per second, we should get far fewer progress
// updates than files (plus one final update).
fs := afero.NewMemMapFs()
files := make(map[string][]byte, 100)
for i := 0; i < 100; i++ {
for i := range 100 {
name := fmt.Sprintf("file%03d.txt", i)
files[name] = []byte("content")
}
createTestManifest(t, fs, "/manifest.mf", files)
createFilesOnDisk(t, fs, "/data", files)
createFilesOnDisk(t, fs, files)
chk, err := NewChecker("/manifest.mf", "/data", fs)
require.NoError(t, err)
@@ -551,9 +632,7 @@ func TestCheckProgressRateLimited(t *testing.T) {
err = chk.Check(context.Background(), results, progress)
require.NoError(t, err)
// Drain results
for range results {
}
// results is fully buffered and closed; no draining needed
// Count progress updates
var progressCount int
@@ -563,6 +642,8 @@ func TestCheckProgressRateLimited(t *testing.T) {
// Should be far fewer than 100 (rate-limited to once per second)
// At minimum we get the final update
assert.GreaterOrEqual(t, progressCount, 1, "should get at least the final progress update")
assert.Less(t, progressCount, 100, "progress should be rate-limited, not one per file")
assert.GreaterOrEqual(t, progressCount, 1,
"should get at least the final progress update")
assert.Less(t, progressCount, 100,
"progress should be rate-limited, not one per file")
}
mfer/constants.go
+9
View File
@@ -1,11 +1,20 @@
package mfer
const (
// Version is the current mfer release version.
Version = "0.1.0"
// ReleaseDate is the date on which Version was released.
ReleaseDate = "2025-12-17"
// MaxDecompressedSize is the maximum allowed size of decompressed manifest
// data (256 MB). This prevents decompression bombs from consuming excessive
// memory.
MaxDecompressedSize int64 = 256 * 1024 * 1024
// zstdWindowSize is the zstd window zstd.SpeedBestCompression gives mfer's writer.
zstdWindowSize = 8 << 20
// uuidLength is the length in bytes of a binary UUID.
uuidLength = 16
)
mfer/deserialize.go
+149 -38
View File
@@ -2,6 +2,7 @@ package mfer
import (
"bytes"
"context"
"crypto/sha256"
"errors"
"fmt"
@@ -15,105 +16,201 @@ import (
"sneak.berlin/go/mfer/internal/log"
)
var (
errInvalidUUIDLength = errors.New("invalid UUID length")
errInvalidUUIDFormat = errors.New("invalid UUID format")
errUnknownVersion = errors.New("unknown version")
errUnknownCompression = errors.New("unknown compression type")
errCompressedHashWrong = errors.New("compressed data hash mismatch")
errSignatureNoPubKey = errors.New("signature present but no public key")
errDecompressedTooLarge = errors.New("decompressed data exceeds maximum allowed size")
errUUIDMismatch = errors.New("outer and inner UUID mismatch")
errInvalidFileFormat = errors.New("invalid file format")
errInvalidManifestPath = errors.New("manifest contains invalid path")
)
// validateUUID checks that the byte slice is a valid UUID (16 bytes, parseable).
func validateUUID(data []byte) error {
if len(data) != 16 {
return errors.New("invalid UUID length")
if len(data) != uuidLength {
return errInvalidUUIDLength
}
// Try to parse as UUID to validate format
_, err := uuid.FromBytes(data)
if err != nil {
return errors.New("invalid UUID format")
return errInvalidUUIDFormat
}
return nil
}
func (m *manifest) deserializeInner() error {
if m.pbOuter.Version != MFFileOuter_VERSION_ONE {
return errors.New("unknown version")
// validateOuterHeader checks the outer message's version, compression
// type, and UUID.
func (m *manifest) validateOuterHeader() error {
if m.pbOuter.GetVersion() != MFFileOuter_VERSION_ONE {
return errUnknownVersion
}
if m.pbOuter.CompressionType != MFFileOuter_COMPRESSION_ZSTD {
return errors.New("unknown compression type")
if m.pbOuter.GetCompressionType() != MFFileOuter_COMPRESSION_ZSTD {
return errUnknownCompression
}
// Validate outer UUID before any decompression
if err := validateUUID(m.pbOuter.Uuid); err != nil {
return errors.New("outer UUID invalid: " + err.Error())
err := validateUUID(m.pbOuter.GetUuid())
if err != nil {
return fmt.Errorf("outer UUID invalid: %w", err)
}
// Verify hash of compressed data before decompression
return nil
}
// verifyOuterIntegrity checks the hash of the compressed payload and,
// if a signature is present, verifies it against the embedded public key.
func (m *manifest) verifyOuterIntegrity() error {
h := sha256.New()
if _, err := h.Write(m.pbOuter.InnerMessage); err != nil {
_, err := h.Write(m.pbOuter.GetInnerMessage())
if err != nil {
return fmt.Errorf("deserialize: hash write: %w", err)
}
sha256Hash := h.Sum(nil)
if !bytes.Equal(sha256Hash, m.pbOuter.Sha256) {
return errors.New("compressed data hash mismatch")
if !bytes.Equal(sha256Hash, m.pbOuter.GetSha256()) {
return errCompressedHashWrong
}
// Verify signature if present
if len(m.pbOuter.Signature) > 0 {
if len(m.pbOuter.SigningPubKey) == 0 {
return errors.New("signature present but no public key")
if len(m.pbOuter.GetSignature()) == 0 {
return nil
}
if len(m.pbOuter.GetSigningPubKey()) == 0 {
return errSignatureNoPubKey
}
sigString, err := m.signatureString()
if err != nil {
return fmt.Errorf("failed to generate signature string for verification: %w", err)
return fmt.Errorf(
"failed to generate signature string for verification: %w", err,
)
}
if err := gpgVerify([]byte(sigString), m.pbOuter.Signature, m.pbOuter.SigningPubKey); err != nil {
// Loading a manifest takes no context; gpgTimeout still bounds gpg.
err = gpgVerify(
context.Background(),
[]byte(sigString),
m.pbOuter.GetSignature(),
m.pbOuter.GetSigningPubKey(),
)
if err != nil {
return fmt.Errorf("signature verification failed: %w", err)
}
log.Infof("signature verified successfully")
return nil
}
bb := bytes.NewBuffer(m.pbOuter.InnerMessage)
// decompressInner decompresses the inner payload, enforcing size limits
// to prevent decompression bombs.
func (m *manifest) decompressInner() ([]byte, error) {
bb := bytes.NewBuffer(m.pbOuter.GetInnerMessage())
zr, err := zstd.NewReader(bb)
// By default the decoder decodes a payload under 128 KiB in full,
// each frame up to the decoder's limit, before the LimitReader below
// reads any of it. Decoding synchronously and never in full makes it
// decode only what the LimitReader asks for. It also sets aside a new
// buffer for each frame that asks for a larger window than the frames
// before it, even a frame holding no data. Refusing windows above
// zstdWindowSize keeps each buffer to a little over zstdWindowSize, and
// the buffers of frames holding no data to about 16 times it in total.
zr, err := zstd.NewReader(bb,
zstd.WithDecoderConcurrency(1),
zstd.WithDecodeBuffersBelow(0),
zstd.WithDecoderMaxWindow(zstdWindowSize))
if err != nil {
return fmt.Errorf("deserialize: zstd reader: %w", err)
return nil, fmt.Errorf("deserialize: zstd reader: %w", err)
}
defer zr.Close()
// Limit decompressed size to prevent decompression bombs.
// Use declared size + 1 byte to detect overflow, capped at MaxDecompressedSize.
maxSize := MaxDecompressedSize
if m.pbOuter.Size > 0 && m.pbOuter.Size < int64(maxSize) {
maxSize = int64(m.pbOuter.Size) + 1
if m.pbOuter.GetSize() > 0 && m.pbOuter.GetSize() < maxSize {
maxSize = m.pbOuter.GetSize() + 1
}
limitedReader := io.LimitReader(zr, maxSize)
dat, err := io.ReadAll(limitedReader)
if err != nil {
return fmt.Errorf("deserialize: decompress: %w", err)
return nil, fmt.Errorf("deserialize: decompress: %w", err)
}
if int64(len(dat)) >= MaxDecompressedSize {
return fmt.Errorf("decompressed data exceeds maximum allowed size of %d bytes", MaxDecompressedSize)
return nil, fmt.Errorf(
"%w of %d bytes", errDecompressedTooLarge, MaxDecompressedSize,
)
}
return dat, nil
}
func (m *manifest) deserializeInner() error {
err := m.validateOuterHeader()
if err != nil {
return err
}
err = m.verifyOuterIntegrity()
if err != nil {
return err
}
dat, err := m.decompressInner()
if err != nil {
return err
}
isize := len(dat)
if int64(isize) != m.pbOuter.Size {
log.Debugf("truncated data, got %d expected %d", isize, m.pbOuter.Size)
if int64(isize) != m.pbOuter.GetSize() {
log.Debugf("truncated data, got %d expected %d", isize, m.pbOuter.GetSize())
return bork.ErrFileTruncated
}
// Deserialize inner message
m.pbInner = new(MFFile)
if err := proto.Unmarshal(dat, m.pbInner); err != nil {
err = proto.Unmarshal(dat, m.pbInner)
if err != nil {
return fmt.Errorf("deserialize: unmarshal inner: %w", err)
}
// Validate inner UUID
if err := validateUUID(m.pbInner.Uuid); err != nil {
return errors.New("inner UUID invalid: " + err.Error())
err = validateUUID(m.pbInner.GetUuid())
if err != nil {
return fmt.Errorf("inner UUID invalid: %w", err)
}
// Verify UUIDs match
if !bytes.Equal(m.pbOuter.Uuid, m.pbInner.Uuid) {
return errors.New("outer and inner UUID mismatch")
if !bytes.Equal(m.pbOuter.GetUuid(), m.pbInner.GetUuid()) {
return errUUIDMismatch
}
log.Infof("loaded manifest with %d files", len(m.pbInner.Files))
// Enforce the manifest path invariants on every entry as it is loaded,
// so that no consumer of a manifest — Checker today, any restore or
// extract path tomorrow — acts on a traversal or absolute path from an
// untrusted .mf. Reject loudly on the first offender rather than
// dropping entries, which would let a hostile manifest hide files from a
// check.
for _, f := range m.pbInner.GetFiles() {
err = ValidatePath(f.GetPath())
if err != nil {
return fmt.Errorf("%w: %w", errInvalidManifestPath, err)
}
}
log.Infof("loaded manifest with %d files", len(m.pbInner.GetFiles()))
return nil
}
@@ -122,20 +219,26 @@ func validateMagic(dat []byte) bool {
if len(dat) < ml {
return false
}
got := dat[0:ml]
expected := []byte(MAGIC)
return bytes.Equal(got, expected)
}
// NewManifestFromReader reads a manifest from an io.Reader.
//
//nolint:revive // unexported-return: exporting manifest is owner question 13
func NewManifestFromReader(input io.Reader) (*manifest, error) {
m := &manifest{}
dat, err := io.ReadAll(input)
if err != nil {
return nil, err
}
if !validateMagic(dat) {
return nil, errors.New("invalid file format")
return nil, errInvalidFileFormat
}
// remove magic bytes prefix:
@@ -145,12 +248,15 @@ func NewManifestFromReader(input io.Reader) (*manifest, error) {
// deserialize outer:
m.pbOuter = new(MFFileOuter)
if err := proto.Unmarshal(dat, m.pbOuter); err != nil {
err = proto.Unmarshal(dat, m.pbOuter)
if err != nil {
return nil, err
}
// deserialize inner:
if err := m.deserializeInner(); err != nil {
err = m.deserializeInner()
if err != nil {
return nil, err
}
@@ -159,14 +265,19 @@ func NewManifestFromReader(input io.Reader) (*manifest, error) {
// NewManifestFromFile reads a manifest from a file path using the given filesystem.
// If fs is nil, the real filesystem (OsFs) is used.
//
//nolint:revive // unexported-return: exporting manifest is owner question 13
func NewManifestFromFile(fs afero.Fs, path string) (*manifest, error) {
if fs == nil {
fs = afero.NewOsFs()
}
f, err := fs.Open(path)
if err != nil {
return nil, err
}
defer func() { _ = f.Close() }()
return NewManifestFromReader(f)
}
mfer/deserialize_fuzz_test.go
+83
View File
@@ -0,0 +1,83 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
"bytes"
"runtime"
"testing"
"google.golang.org/protobuf/proto"
)
// FuzzNewManifestFromReader feeds arbitrary bytes to the manifest parser.
// `make test` runs it on the seed corpus in
// testdata/fuzz/FuzzNewManifestFromReader; `make fuzz` searches for new
// inputs.
//
// For every input the parser must return a manifest or an error, not both
// and not neither, and must not allocate more than a fixed multiple of its
// input and of the decompressed data it may read, plus room for the
// decoder's window buffers. A panic or a hang fails the test on its own.
func FuzzNewManifestFromReader(f *testing.F) {
// A signed manifest makes the parser write the key and signature to a
// temporary directory and run gpg on them. With gpg off the PATH and
// temporary files kept in the test's own directory, no process is
// started and nothing is written elsewhere; such input ends in an
// error instead.
f.Setenv("PATH", "")
f.Setenv("TMPDIR", f.TempDir())
f.Fuzz(func(t *testing.T, data []byte) {
var before, after runtime.MemStats
runtime.ReadMemStats(&before)
m, err := NewManifestFromReader(bytes.NewReader(data))
runtime.ReadMemStats(&after)
if (m == nil) == (err == nil) {
t.Fatalf("got manifest %p and error %v, want exactly one", m, err)
}
// The parser reads at most the declared size plus one byte of
// decompressed data, and never more than MaxDecompressedSize.
decompressed := uint64(MaxDecompressedSize)
outer := new(MFFileOuter)
if validateMagic(data) &&
proto.Unmarshal(data[len(MAGIC):], outer) == nil {
size := outer.GetSize()
if size > 0 && size < MaxDecompressedSize {
decompressed = uint64(size) + 1
}
}
// It also keeps a few copies of its input. Buffers grow by
// copying, so reaching those sizes allocates a few times them in
// total: sixteen times the input and the decompressed data leaves
// room for that.
//
// The decoder also sets aside a new buffer of one to two times the
// window for each frame that asks for a larger window than the
// frames before it, and refuses windows above zstdWindowSize. A
// frame that gives its content size instead of a window has that
// size as its window, refused above zstdWindowSize like any other.
// Frames asking for every window size up to that make it set aside
// about 16 times zstdWindowSize in total; 24 times leaves room.
//
// The seed whose frame claims 8 GiB fails if the decoder sets that
// size aside; the seed whose frames ask for ever larger windows
// fails if the decoder accepts windows of twice zstdWindowSize; the
// seed whose two frames together exceed MaxDecompressedSize fails
// if the decoder decodes them in full instead of stopping at the
// declared size.
limit := 16*(uint64(len(data))+decompressed) + 24*zstdWindowSize
allocated := after.TotalAlloc - before.TotalAlloc
if allocated > limit {
t.Fatalf("allocated %d bytes for %d bytes of input, limit %d",
allocated, len(data), limit)
}
})
}
mfer/deserialize_path_test.go
+146
View File
@@ -0,0 +1,146 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
"bytes"
"context"
"crypto/sha256"
"fmt"
"testing"
"github.com/google/uuid"
"github.com/klauspost/compress/zstd"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"google.golang.org/protobuf/encoding/protowire"
"google.golang.org/protobuf/proto"
)
// craftInnerBytes builds the wire bytes of an inner MFFile holding a single
// file entry whose path is exactly pathBytes. It writes the wire form by hand
// so a hostile path — including one that is not valid UTF-8 — can be embedded
// without proto.Marshal's own UTF-8 enforcement rejecting it first.
func craftInnerBytes(id uuid.UUID, pathBytes string) []byte {
entry := protowire.AppendTag(nil, 1, protowire.BytesType) // MFFilePath.path
entry = protowire.AppendString(entry, pathBytes)
inner := protowire.AppendTag(nil, 100, protowire.VarintType) // MFFile.version
inner = protowire.AppendVarint(inner, uint64(MFFile_VERSION_ONE))
inner = protowire.AppendTag(inner, 101, protowire.BytesType) // MFFile.files
inner = protowire.AppendBytes(inner, entry)
inner = protowire.AppendTag(inner, 102, protowire.BytesType) // MFFile.uuid
inner = protowire.AppendBytes(inner, id[:])
return inner
}
// wrapInner wraps inner MFFile wire bytes in a complete, well-formed .mf
// envelope (magic prefix, zstd-compressed payload, matching hash and UUID) so
// that deserialization reaches path validation rather than failing earlier on
// an integrity check.
func wrapInner(t *testing.T, id uuid.UUID, innerData []byte) []byte {
t.Helper()
var cbuf bytes.Buffer
zw, err := zstd.NewWriter(&cbuf, zstd.WithEncoderLevel(zstd.SpeedBestCompression))
require.NoError(t, err)
_, err = zw.Write(innerData)
require.NoError(t, err)
require.NoError(t, zw.Close())
compressed := cbuf.Bytes()
sum := sha256.Sum256(compressed)
outer := &MFFileOuter{
InnerMessage: compressed,
Size: int64(len(innerData)),
Sha256: sum[:],
Uuid: id[:],
Version: MFFileOuter_VERSION_ONE,
CompressionType: MFFileOuter_COMPRESSION_ZSTD,
}
ob, err := proto.Marshal(outer)
require.NoError(t, err)
return append([]byte(MAGIC), ob...)
}
func TestDeserializeRejectsInvalidEntryPaths(t *testing.T) {
t.Parallel()
tests := []struct {
name string
path string
}{
{"parent traversal", "../escape"},
{"interior traversal", "a/../../escape"},
{"absolute path", "/etc/passwd"},
{"backslash path", `a\b`},
{"double slash", "a//b"},
{"empty path", ""},
{"invalid utf-8", "abc\xff"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
id := uuid.New()
data := wrapInner(t, id, craftInnerBytes(id, tt.path))
_, err := NewManifestFromReader(bytes.NewReader(data))
require.Error(t, err)
if tt.path == "abc\xff" {
// A path that is not valid UTF-8 cannot survive the proto3
// string decoder, which rejects it before path validation
// runs; the manifest is still refused at load time.
return
}
require.ErrorIs(t, err, errInvalidManifestPath)
if tt.path != "" {
// ValidatePath quotes the path with %q; assert against the
// same rendering so escaped characters (e.g. a backslash)
// still match.
assert.Contains(t, err.Error(), fmt.Sprintf("%q", tt.path),
"error must name the offending path")
}
})
}
}
func TestDeserializeValidManifestRoundTrips(t *testing.T) {
t.Parallel()
hash := make([]byte, 34) // multihash: 2-byte prefix + 32-byte SHA-256
b := NewBuilder()
require.NoError(t, b.AddFileWithHash("dir/file.txt", 123, ModTime{}, hash))
var buf bytes.Buffer
require.NoError(t, b.Build(context.Background(), &buf))
m, err := NewManifestFromReader(bytes.NewReader(buf.Bytes()))
require.NoError(t, err)
files := m.Files()
require.Len(t, files, 1)
assert.Equal(t, "dir/file.txt", files[0].GetPath())
assert.Equal(t, int64(123), files[0].GetSize())
}
// TestValidatePathRejectsInvalidUTF8 pins the ValidatePath rule that a manifest
// path must be valid UTF-8, independent of the proto decoder that also enforces
// it on the wire.
func TestValidatePathRejectsInvalidUTF8(t *testing.T) {
t.Parallel()
err := ValidatePath("abc\xff")
require.ErrorIs(t, err, errPathNotUTF8)
assert.Contains(t, err.Error(), "UTF-8")
}
mfer/errmsg_test.go
+87
View File
@@ -0,0 +1,87 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
"context"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// TestValidatePathMessagesVerbatim pins the exact rendered text of every
// ValidatePath rejection.
//
// These strings are user-visible and are assembled by wrapping static
// sentinels mid-sentence, which makes them easy to reword by accident
// while refactoring for errors.Is matchability. Changing one is a
// deliberate change, not a refactoring side effect.
func TestValidatePathMessagesVerbatim(t *testing.T) {
t.Parallel()
for _, tc := range []struct {
name string
path string
want string
is error
}{
{
name: "empty",
path: "",
want: "path cannot be empty",
is: errPathEmpty,
},
{
name: "not utf8",
path: "a\xffb",
want: `path "a\xffb" is not valid UTF-8`,
is: errPathNotUTF8,
},
{
name: "backslash",
path: `a\b`,
want: `path "a\\b" contains backslash; ` +
"use forward slashes only",
is: errPathBackslash,
},
{
name: "absolute",
path: "/a/b",
want: `path "/a/b" is absolute; must be relative`,
is: errPathAbsolute,
},
{
name: "empty segment",
path: "a//b",
want: `path "a//b" contains empty segment`,
is: errPathEmptySegment,
},
{
name: "dotdot segment",
path: "a/../b",
want: `path "a/../b" contains '..' segment`,
is: errPathDotDot,
},
} {
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
err := ValidatePath(tc.path)
require.Error(t, err)
assert.Equal(t, tc.want, err.Error())
require.ErrorIs(t, err, tc.is)
})
}
}
// TestSerializeInternalErrorMessagesVerbatim pins the two distinct
// "internal error" messages, which differ between generate and
// generateOuter and have always done so.
func TestSerializeInternalErrorMessagesVerbatim(t *testing.T) {
t.Parallel()
m := &manifest{}
require.EqualError(t, m.generate(context.Background()),
"internal error: pbInner not set")
require.EqualError(t, m.generateOuter(context.Background()), "internal error")
}
mfer/gpg.go
+186 -89
View File
@@ -2,11 +2,55 @@ package mfer
import (
"bytes"
"context"
"errors"
"fmt"
"io"
"os"
"os/exec"
"path/filepath"
"strings"
"time"
)
const (
// gpgTimeout bounds every gpg run, which can otherwise wait forever on
// a passphrase prompt or a stalled gpg-agent. A minute leaves a person
// time to type a passphrase or touch a smartcard.
gpgTimeout = time.Minute
// gpgWaitDelay is how long a gpg run keeps waiting for gpg's stdout
// and stderr to close once gpg has been killed or has exited. Reading
// what gpg itself wrote takes far less; only a process gpg left behind
// holds them open longer.
gpgWaitDelay = time.Second
// privateDirPerms is the permission mode for temporary GPG home
// directories.
privateDirPerms os.FileMode = 0o700
// privateFilePerms is the permission mode for temporary key,
// signature, and data files.
privateFilePerms os.FileMode = 0o600
// gpgFingerprintField is the record type tag for fingerprint lines
// in gpg --with-colons output.
gpgFingerprintField = "fpr"
// gpgFingerprintMinFields is the minimum number of colon-separated
// fields in a gpg fingerprint record (the fingerprint is field 10).
gpgFingerprintMinFields = 10
// gpg option names used from more than one call site.
gpgOptArmor = "--armor"
gpgOptHomedir = "--homedir"
gpgOptVerify = "--verify"
)
var (
errGPGKeyNotFound = errors.New("gpg key not found")
errFingerprintNotFound = errors.New("fingerprint not found for key")
errImportedFPRNotFound = errors.New("fingerprint not found in imported key")
)
// GPGKeyID represents a GPG key identifier (fingerprint or key ID).
@@ -17,22 +61,90 @@ type SigningOptions struct {
KeyID GPGKeyID
}
// gpgSign creates a detached signature of the data using the specified key.
// Returns the armored detached signature.
func gpgSign(data []byte, keyID GPGKeyID) ([]byte, error) {
cmd := exec.Command("gpg", "--batch", "--no-tty",
"--detach-sign",
"--armor",
"--local-user", string(keyID),
)
// gpgArgs builds a gpg argument list from opts followed by positional
// arguments, separated by an explicit "--" end-of-options marker.
//
// This matters because key IDs reach gpg as bare positional arguments
// (from --sign-key / MFER_SIGN_KEY) and gpg would otherwise parse a value
// beginning with "-" as one of its own options. Callers must route every
// non-option argument through here.
func gpgArgs(opts []string, positional ...string) []string {
args := make([]string, 0, len(opts)+1+len(positional))
args = append(args, opts...)
args = append(args, "--")
args = append(args, positional...)
cmd.Stdin = bytes.NewReader(data)
return args
}
// runGPG runs the gpg binary in batch mode with the given arguments and
// optional stdin, returning captured stdout and stderr. gpg is killed when
// ctx ends or gpgTimeout passes, whichever comes first.
func runGPG(
ctx context.Context, stdin io.Reader, args ...string,
) (*bytes.Buffer, *bytes.Buffer, error) {
// exec.CommandContext kills only gpg itself. A gpg-agent that gpg
// starts runs detached and holds none of gpg's output, but another
// process gpg leaves behind (a wrapper script that runs the real gpg
// without exec, for example) can keep gpg's stdout or stderr open, and
// Run would wait for it to exit. WaitDelay stops that wait
// gpgWaitDelay after the kill; that process is left running.
ctx, cancel := context.WithTimeout(ctx, gpgTimeout)
defer cancel()
fullArgs := append([]string{"--batch", "--no-tty"}, args...)
// G204: the executable name is a compile-time constant. The arguments
// are not, so the guarantee that matters is placement: every
// caller-supplied value is passed either as the value of a named
// option or after the "--" end-of-options marker inserted by gpgArgs,
// and therefore cannot be reinterpreted by gpg as an option.
cmd := exec.CommandContext( //nolint:gosec // G204: see comment above
ctx, "gpg", fullArgs...)
cmd.WaitDelay = gpgWaitDelay
cmd.Stdin = stdin
var stdout, stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
err := cmd.Run()
if err != nil && ctx.Err() != nil {
// gpg was killed because ctx ended, which Run reports only as
// "signal: killed"; return the reason instead.
err = ctx.Err()
if errors.Is(err, context.DeadlineExceeded) {
err = fmt.Errorf("gpg timed out: %w", err)
}
}
return &stdout, &stderr, err
}
// parseFingerprint extracts the first fingerprint from gpg --with-colons
// output, or returns ok=false if none is present.
func parseFingerprint(colonOutput string) (string, bool) {
for _, line := range strings.Split(colonOutput, "\n") {
fields := strings.Split(line, ":")
if len(fields) >= gpgFingerprintMinFields &&
fields[0] == gpgFingerprintField {
return fields[9], true
}
}
return "", false
}
// gpgSign creates a detached signature of the data using the specified key.
// Returns the armored detached signature.
func gpgSign(ctx context.Context, data []byte, keyID GPGKeyID) ([]byte, error) {
stdout, stderr, err := runGPG(ctx, bytes.NewReader(data),
"--detach-sign",
gpgOptArmor,
"--local-user", string(keyID),
)
if err != nil {
return nil, fmt.Errorf("gpg sign failed: %w: %s", err, stderr.String())
}
@@ -41,171 +153,156 @@ func gpgSign(data []byte, keyID GPGKeyID) ([]byte, error) {
// gpgExportPublicKey exports the public key for the specified key ID.
// Returns the armored public key.
func gpgExportPublicKey(keyID GPGKeyID) ([]byte, error) {
cmd := exec.Command("gpg", "--batch", "--no-tty",
"--export",
"--armor",
string(keyID),
func gpgExportPublicKey(ctx context.Context, keyID GPGKeyID) ([]byte, error) {
stdout, stderr, err := runGPG(ctx, nil,
gpgArgs([]string{"--export", gpgOptArmor}, string(keyID))...,
)
var stdout, stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
if err != nil {
return nil, fmt.Errorf("gpg export failed: %w: %s", err, stderr.String())
}
if stdout.Len() == 0 {
return nil, fmt.Errorf("gpg key not found: %s", keyID)
return nil, fmt.Errorf("%w: %s", errGPGKeyNotFound, keyID)
}
return stdout.Bytes(), nil
}
// gpgGetKeyFingerprint gets the full fingerprint for a key ID.
func gpgGetKeyFingerprint(keyID GPGKeyID) ([]byte, error) {
cmd := exec.Command("gpg", "--batch", "--no-tty",
"--with-colons",
"--fingerprint",
string(keyID),
func gpgGetKeyFingerprint(ctx context.Context, keyID GPGKeyID) ([]byte, error) {
stdout, stderr, err := runGPG(ctx, nil,
gpgArgs([]string{"--with-colons", "--fingerprint"}, string(keyID))...,
)
if err != nil {
return nil, fmt.Errorf(
"gpg fingerprint lookup failed: %w: %s", err, stderr.String(),
)
var stdout, stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
return nil, fmt.Errorf("gpg fingerprint lookup failed: %w: %s", err, stderr.String())
}
// Parse the colon-delimited output to find the fingerprint
lines := strings.Split(stdout.String(), "\n")
for _, line := range lines {
fields := strings.Split(line, ":")
if len(fields) >= 10 && fields[0] == "fpr" {
return []byte(fields[9]), nil
}
fpr, ok := parseFingerprint(stdout.String())
if !ok {
return nil, fmt.Errorf("%w: %s", errFingerprintNotFound, keyID)
}
return nil, fmt.Errorf("fingerprint not found for key: %s", keyID)
return []byte(fpr), nil
}
// gpgExtractPubKeyFingerprint imports a public key into a temporary keyring
// and extracts its fingerprint. This verifies the key is valid and returns
// the actual fingerprint from the key material.
func gpgExtractPubKeyFingerprint(pubKey []byte) (string, error) {
func gpgExtractPubKeyFingerprint(ctx context.Context, pubKey []byte) (string, error) {
// Create temporary directory for GPG operations
tmpDir, err := os.MkdirTemp("", "mfer-gpg-fingerprint-*")
if err != nil {
return "", fmt.Errorf("failed to create temp dir: %w", err)
}
defer func() { _ = os.RemoveAll(tmpDir) }()
// Set restrictive permissions
if err := os.Chmod(tmpDir, 0o700); err != nil {
err = os.Chmod(tmpDir, privateDirPerms)
if err != nil {
return "", fmt.Errorf("failed to set temp dir permissions: %w", err)
}
// Write public key to temp file
pubKeyFile := filepath.Join(tmpDir, "pubkey.asc")
if err := os.WriteFile(pubKeyFile, pubKey, 0o600); err != nil {
err = os.WriteFile(pubKeyFile, pubKey, privateFilePerms)
if err != nil {
return "", fmt.Errorf("failed to write public key: %w", err)
}
// Import the public key into the temporary keyring
importCmd := exec.Command("gpg", "--batch", "--no-tty",
"--homedir", tmpDir,
"--import",
pubKeyFile,
_, importStderr, err := runGPG(ctx, nil,
gpgArgs([]string{gpgOptHomedir, tmpDir, "--import"}, pubKeyFile)...,
)
if err != nil {
return "", fmt.Errorf(
"failed to import public key: %w: %s", err, importStderr.String(),
)
var importStderr bytes.Buffer
importCmd.Stderr = &importStderr
if err := importCmd.Run(); err != nil {
return "", fmt.Errorf("failed to import public key: %w: %s", err, importStderr.String())
}
// List keys to get fingerprint
listCmd := exec.Command("gpg", "--batch", "--no-tty",
listStdout, listStderr, err := runGPG(ctx, nil,
"--homedir", tmpDir,
"--with-colons",
"--fingerprint",
)
var listStdout, listStderr bytes.Buffer
listCmd.Stdout = &listStdout
listCmd.Stderr = &listStderr
if err := listCmd.Run(); err != nil {
return "", fmt.Errorf("failed to list keys: %w: %s", err, listStderr.String())
if err != nil {
return "", fmt.Errorf(
"failed to list keys: %w: %s", err, listStderr.String(),
)
}
// Parse the colon-delimited output to find the fingerprint
lines := strings.Split(listStdout.String(), "\n")
for _, line := range lines {
fields := strings.Split(line, ":")
if len(fields) >= 10 && fields[0] == "fpr" {
return fields[9], nil
}
fpr, ok := parseFingerprint(listStdout.String())
if !ok {
return "", errImportedFPRNotFound
}
return "", fmt.Errorf("fingerprint not found in imported key")
return fpr, nil
}
// gpgVerify verifies a detached signature against data using the provided public key.
// It creates a temporary keyring to import the public key for verification.
func gpgVerify(data, signature, pubKey []byte) error {
func gpgVerify(ctx context.Context, data, signature, pubKey []byte) error {
// Create temporary directory for GPG operations
tmpDir, err := os.MkdirTemp("", "mfer-gpg-verify-*")
if err != nil {
return fmt.Errorf("failed to create temp dir: %w", err)
}
defer func() { _ = os.RemoveAll(tmpDir) }()
// Set restrictive permissions
if err := os.Chmod(tmpDir, 0o700); err != nil {
err = os.Chmod(tmpDir, privateDirPerms)
if err != nil {
return fmt.Errorf("failed to set temp dir permissions: %w", err)
}
// Write public key to temp file
pubKeyFile := filepath.Join(tmpDir, "pubkey.asc")
if err := os.WriteFile(pubKeyFile, pubKey, 0o600); err != nil {
err = os.WriteFile(pubKeyFile, pubKey, privateFilePerms)
if err != nil {
return fmt.Errorf("failed to write public key: %w", err)
}
// Write signature to temp file
sigFile := filepath.Join(tmpDir, "signature.asc")
if err := os.WriteFile(sigFile, signature, 0o600); err != nil {
err = os.WriteFile(sigFile, signature, privateFilePerms)
if err != nil {
return fmt.Errorf("failed to write signature: %w", err)
}
// Write data to temp file
dataFile := filepath.Join(tmpDir, "data")
if err := os.WriteFile(dataFile, data, 0o600); err != nil {
err = os.WriteFile(dataFile, data, privateFilePerms)
if err != nil {
return fmt.Errorf("failed to write data: %w", err)
}
// Import the public key into the temporary keyring
importCmd := exec.Command("gpg", "--batch", "--no-tty",
"--homedir", tmpDir,
"--import",
pubKeyFile,
_, importStderr, err := runGPG(ctx, nil,
gpgArgs([]string{gpgOptHomedir, tmpDir, "--import"}, pubKeyFile)...,
)
if err != nil {
return fmt.Errorf(
"failed to import public key: %w: %s", err, importStderr.String(),
)
var importStderr bytes.Buffer
importCmd.Stderr = &importStderr
if err := importCmd.Run(); err != nil {
return fmt.Errorf("failed to import public key: %w: %s", err, importStderr.String())
}
// Verify the signature
verifyCmd := exec.Command("gpg", "--batch", "--no-tty",
"--homedir", tmpDir,
"--verify",
sigFile,
dataFile,
_, verifyStderr, err := runGPG(ctx, nil,
gpgArgs([]string{gpgOptHomedir, tmpDir, gpgOptVerify},
sigFile, dataFile)...,
)
if err != nil {
return fmt.Errorf(
"signature verification failed: %w: %s", err, verifyStderr.String(),
)
var verifyStderr bytes.Buffer
verifyCmd.Stderr = &verifyStderr
if err := verifyCmd.Run(); err != nil {
return fmt.Errorf("signature verification failed: %w: %s", err, verifyStderr.String())
}
return nil
mfer/gpg_test.go
+224 -83
View File
@@ -1,13 +1,18 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
"bytes"
"context"
"io"
"os"
"os/exec"
"path/filepath"
"strconv"
"strings"
"syscall"
"testing"
"time"
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
@@ -15,35 +20,20 @@ import (
)
// testGPGEnv sets up a temporary GPG home directory with a test key.
// Returns the key ID and a cleanup function.
func testGPGEnv(t *testing.T) (GPGKeyID, func()) {
// Returns the key ID and the GPG home directory; callers must point
// GNUPGHOME at the returned directory (via t.Setenv) before using the
// gpg helpers under test.
func testGPGEnv(t *testing.T) (GPGKeyID, string) {
t.Helper()
// Check if gpg is installed
if _, err := exec.LookPath("gpg"); err != nil {
_, err := exec.LookPath("gpg")
if err != nil {
t.Skip("gpg not installed, skipping signing test")
return "", func() {}
}
// Create temporary GPG home directory
gpgHome, err := os.MkdirTemp("", "mfer-gpg-test-*")
require.NoError(t, err)
// Set restrictive permissions on GPG home
require.NoError(t, os.Chmod(gpgHome, 0o700))
// Save original GNUPGHOME and set new one
origGPGHome := os.Getenv("GNUPGHOME")
require.NoError(t, os.Setenv("GNUPGHOME", gpgHome))
cleanup := func() {
if origGPGHome == "" {
_ = os.Unsetenv("GNUPGHOME")
} else {
_ = os.Setenv("GNUPGHOME", origGPGHome)
}
_ = os.RemoveAll(gpgHome)
}
// Create temporary GPG home directory (0700 by default)
gpgHome := t.TempDir()
// Generate a test key with no passphrase
keyParams := `%no-protection
@@ -57,48 +47,57 @@ Expire-Date: 0
paramsFile := filepath.Join(gpgHome, "key-params")
require.NoError(t, os.WriteFile(paramsFile, []byte(keyParams), 0o600))
cmd := exec.Command("gpg", "--batch", "--gen-key", paramsFile)
ctx, cancel := context.WithTimeout(context.Background(), gpgTimeout)
defer cancel()
//nolint:gosec // paramsFile is a test-controlled path inside t.TempDir()
cmd := exec.CommandContext(ctx, "gpg",
"--batch", "--gen-key", paramsFile)
cmd.Env = append(os.Environ(), "GNUPGHOME="+gpgHome)
output, err := cmd.CombinedOutput()
if err != nil {
cleanup()
t.Skipf("failed to generate test GPG key: %v: %s", err, output)
return "", func() {}
}
// Get the key fingerprint
cmd = exec.Command("gpg", "--list-keys", "--with-colons", "test@mfer.test")
cmd = exec.CommandContext(ctx, "gpg",
"--list-keys", "--with-colons", "test@mfer.test")
cmd.Env = append(os.Environ(), "GNUPGHOME="+gpgHome)
output, err = cmd.Output()
if err != nil {
cleanup()
t.Fatalf("failed to list test key: %v", err)
}
// Parse fingerprint from output
var keyID string
for _, line := range strings.Split(string(output), "\n") {
fields := strings.Split(line, ":")
if len(fields) >= 10 && fields[0] == "fpr" {
if len(fields) >= gpgFingerprintMinFields &&
fields[0] == gpgFingerprintField {
keyID = fields[9]
break
}
}
if keyID == "" {
cleanup()
t.Fatal("failed to find test key fingerprint")
}
return GPGKeyID(keyID), cleanup
return GPGKeyID(keyID), gpgHome
}
func TestGPGSign(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data to sign")
sig, err := gpgSign(data, keyID)
sig, err := gpgSign(context.Background(), data, keyID)
require.NoError(t, err)
assert.NotEmpty(t, sig)
assert.Contains(t, string(sig), "-----BEGIN PGP SIGNATURE-----")
@@ -106,10 +105,10 @@ func TestGPGSign(t *testing.T) {
}
func TestGPGExportPublicKey(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
pubKey, err := gpgExportPublicKey(keyID)
pubKey, err := gpgExportPublicKey(context.Background(), keyID)
require.NoError(t, err)
assert.NotEmpty(t, pubKey)
assert.Contains(t, string(pubKey), "-----BEGIN PGP PUBLIC KEY BLOCK-----")
@@ -117,29 +116,67 @@ func TestGPGExportPublicKey(t *testing.T) {
}
func TestGPGGetKeyFingerprint(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
fingerprint, err := gpgGetKeyFingerprint(keyID)
fingerprint, err := gpgGetKeyFingerprint(context.Background(), keyID)
require.NoError(t, err)
assert.NotEmpty(t, fingerprint)
// The fingerprint should be 40 hex chars
assert.Len(t, fingerprint, 40, "fingerprint should be 40 hex chars")
}
// TestGPGArgsSeparatesPositionals pins that caller-supplied values are
// placed after an end-of-options marker. Key IDs arrive from --sign-key
// and MFER_SIGN_KEY as bare positional arguments, so without the marker
// a value beginning with "-" would be parsed by gpg as one of its own
// options.
func TestGPGArgsSeparatesPositionals(t *testing.T) {
t.Parallel()
assert.Equal(t,
[]string{"--opt-a", "--opt-b", "--", "--version"},
gpgArgs([]string{"--opt-a", "--opt-b"}, "--version"))
assert.Equal(t,
[]string{"--opt-c", "--", "sig", "data"},
gpgArgs([]string{"--opt-c"}, "sig", "data"))
assert.Equal(t, []string{"--opt-d", "--"},
gpgArgs([]string{"--opt-d"}))
}
// TestGPGOptionLikeKeyIDIsNotAnOption drives real gpg with a key ID that
// looks like an option and asserts it is treated as a (nonexistent) key
// rather than executed as gpg's own --version.
func TestGPGOptionLikeKeyIDIsNotAnOption(t *testing.T) {
_, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
pubKey, err := gpgExportPublicKey(context.Background(), GPGKeyID("--version"))
require.Error(t, err)
require.ErrorIs(t, err, errGPGKeyNotFound)
assert.NotContains(t, string(pubKey), "gpg (GnuPG)")
fpr, err := gpgGetKeyFingerprint(context.Background(), GPGKeyID("--version"))
require.Error(t, err)
assert.NotContains(t, string(fpr), "gpg (GnuPG)")
}
func TestGPGSignInvalidKey(t *testing.T) {
// Set up test environment (we need GNUPGHOME set)
_, cleanup := testGPGEnv(t)
defer cleanup()
_, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data")
_, err := gpgSign(data, GPGKeyID("NONEXISTENT_KEY_ID_12345"))
_, err := gpgSign(context.Background(), data,
GPGKeyID("NONEXISTENT_KEY_ID_12345"))
assert.Error(t, err)
}
func TestBuilderWithSigning(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
// Create a builder with signing options
b := NewBuilder()
@@ -155,7 +192,8 @@ func TestBuilderWithSigning(t *testing.T) {
// Build the manifest
var buf bytes.Buffer
err = b.Build(&buf)
err = b.Build(context.Background(), &buf)
require.NoError(t, err)
// Parse the manifest and verify signature fields are populated
@@ -163,26 +201,32 @@ func TestBuilderWithSigning(t *testing.T) {
require.NoError(t, err)
require.NotNil(t, manifest.pbOuter)
assert.NotEmpty(t, manifest.pbOuter.Signature, "signature should be populated")
assert.NotEmpty(t, manifest.pbOuter.Signer, "signer should be populated")
assert.NotEmpty(t, manifest.pbOuter.SigningPubKey, "signing public key should be populated")
assert.NotEmpty(t, manifest.pbOuter.GetSignature(),
"signature should be populated")
assert.NotEmpty(t, manifest.pbOuter.GetSigner(), "signer should be populated")
assert.NotEmpty(t, manifest.pbOuter.GetSigningPubKey(),
"signing public key should be populated")
// Verify signature is a valid PGP signature
assert.Contains(t, string(manifest.pbOuter.Signature), "-----BEGIN PGP SIGNATURE-----")
assert.Contains(t, string(manifest.pbOuter.GetSignature()),
"-----BEGIN PGP SIGNATURE-----")
// Verify public key is a valid PGP public key block
assert.Contains(t, string(manifest.pbOuter.SigningPubKey), "-----BEGIN PGP PUBLIC KEY BLOCK-----")
assert.Contains(t, string(manifest.pbOuter.GetSigningPubKey()),
"-----BEGIN PGP PUBLIC KEY BLOCK-----")
}
func TestScannerWithSigning(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
// Create in-memory filesystem with test files
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("content1"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/file2.txt", []byte("content2"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/file1.txt", []byte("content1"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/file2.txt", []byte("content2"), 0o644))
// Create scanner with signing options
opts := &ScannerOptions{
@@ -205,61 +249,61 @@ func TestScannerWithSigning(t *testing.T) {
manifest, err := NewManifestFromReader(&buf)
require.NoError(t, err)
assert.NotEmpty(t, manifest.pbOuter.Signature)
assert.NotEmpty(t, manifest.pbOuter.Signer)
assert.NotEmpty(t, manifest.pbOuter.SigningPubKey)
assert.NotEmpty(t, manifest.pbOuter.GetSignature())
assert.NotEmpty(t, manifest.pbOuter.GetSigner())
assert.NotEmpty(t, manifest.pbOuter.GetSigningPubKey())
}
func TestGPGVerify(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data to sign and verify")
sig, err := gpgSign(data, keyID)
sig, err := gpgSign(context.Background(), data, keyID)
require.NoError(t, err)
pubKey, err := gpgExportPublicKey(keyID)
pubKey, err := gpgExportPublicKey(context.Background(), keyID)
require.NoError(t, err)
// Verify the signature
err = gpgVerify(data, sig, pubKey)
err = gpgVerify(context.Background(), data, sig, pubKey)
require.NoError(t, err)
}
func TestGPGVerifyInvalidSignature(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data to sign")
sig, err := gpgSign(data, keyID)
sig, err := gpgSign(context.Background(), data, keyID)
require.NoError(t, err)
pubKey, err := gpgExportPublicKey(keyID)
pubKey, err := gpgExportPublicKey(context.Background(), keyID)
require.NoError(t, err)
// Try to verify with different data - should fail
wrongData := []byte("different data")
err = gpgVerify(wrongData, sig, pubKey)
err = gpgVerify(context.Background(), wrongData, sig, pubKey)
assert.Error(t, err)
}
func TestGPGVerifyBadPublicKey(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data")
sig, err := gpgSign(data, keyID)
sig, err := gpgSign(context.Background(), data, keyID)
require.NoError(t, err)
// Try to verify with invalid public key - should fail
badPubKey := []byte("not a valid public key")
err = gpgVerify(data, sig, badPubKey)
err = gpgVerify(context.Background(), data, sig, badPubKey)
assert.Error(t, err)
}
func TestManifestSignatureVerification(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
// Create a builder with signing options
b := NewBuilder()
@@ -275,7 +319,8 @@ func TestManifestSignatureVerification(t *testing.T) {
// Build the manifest
var buf bytes.Buffer
err = b.Build(&buf)
err = b.Build(context.Background(), &buf)
require.NoError(t, err)
// Parse the manifest - signature should be verified during load
@@ -284,12 +329,12 @@ func TestManifestSignatureVerification(t *testing.T) {
require.NotNil(t, manifest)
// Signature should be present and valid
assert.NotEmpty(t, manifest.pbOuter.Signature)
assert.NotEmpty(t, manifest.pbOuter.GetSignature())
}
func TestManifestTamperedSignatureFails(t *testing.T) {
keyID, cleanup := testGPGEnv(t)
defer cleanup()
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
// Create a signed manifest
b := NewBuilder()
@@ -303,7 +348,8 @@ func TestManifestTamperedSignatureFails(t *testing.T) {
require.NoError(t, err)
var buf bytes.Buffer
err = b.Build(&buf)
err = b.Build(context.Background(), &buf)
require.NoError(t, err)
// Tamper with the signature by replacing some bytes
@@ -312,6 +358,7 @@ func TestManifestTamperedSignatureFails(t *testing.T) {
for i := range data {
if i > 100 && data[i] == 'A' {
data[i] = 'B'
break
}
}
@@ -322,6 +369,8 @@ func TestManifestTamperedSignatureFails(t *testing.T) {
}
func TestBuilderWithoutSigning(t *testing.T) {
t.Parallel()
// Create a builder without signing options
b := NewBuilder()
@@ -333,7 +382,8 @@ func TestBuilderWithoutSigning(t *testing.T) {
// Build the manifest
var buf bytes.Buffer
err = b.Build(&buf)
err = b.Build(context.Background(), &buf)
require.NoError(t, err)
// Parse the manifest and verify signature fields are empty
@@ -341,7 +391,98 @@ func TestBuilderWithoutSigning(t *testing.T) {
require.NoError(t, err)
require.NotNil(t, manifest.pbOuter)
assert.Empty(t, manifest.pbOuter.Signature, "signature should be empty when not signing")
assert.Empty(t, manifest.pbOuter.Signer, "signer should be empty when not signing")
assert.Empty(t, manifest.pbOuter.SigningPubKey, "signing public key should be empty when not signing")
assert.Empty(t, manifest.pbOuter.GetSignature(),
"signature should be empty when not signing")
assert.Empty(t, manifest.pbOuter.GetSigner(),
"signer should be empty when not signing")
assert.Empty(t, manifest.pbOuter.GetSigningPubKey(),
"signing public key should be empty when not signing")
}
// fakeGPGPath writes script as an executable named gpg into a temporary
// directory and returns a PATH value with that directory first.
func fakeGPGPath(t *testing.T, script string) string {
t.Helper()
binDir := t.TempDir()
//nolint:gosec // G306: the fake gpg has to be executable
require.NoError(t, os.WriteFile(filepath.Join(binDir, "gpg"),
[]byte(script), 0o700))
return binDir + string(os.PathListSeparator) + os.Getenv("PATH")
}
// TestGPGTimeoutKillsGPG puts a fake gpg that never finishes first on
// PATH and checks that a run past its deadline is killed and reported as
// a timeout of the named operation, instead of hanging.
func TestGPGTimeoutKillsGPG(t *testing.T) {
t.Setenv("PATH", fakeGPGPath(t, "#!/bin/sh\nexec sleep 10\n"))
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
_, err := gpgSign(ctx, []byte("data"), GPGKeyID("any"))
require.ErrorIs(t, err, context.DeadlineExceeded)
assert.Contains(t, err.Error(), "gpg sign failed: gpg timed out")
}
// TestGPGCancelWhenChildHoldsOutput uses a fake gpg that runs sleep as a
// child instead of exec-ing it, the way a wrapper script around the real
// gpg might. Killing the fake gpg leaves sleep holding its stdout and
// stderr open; the call must still return once ctx ends instead of waiting
// for sleep to exit. The fake gpg writes the process ID of sleep to a named
// pipe; the test ends ctx only after reading it, so sleep is running by
// then, and kills sleep before returning.
func TestGPGCancelWhenChildHoldsOutput(t *testing.T) {
pidPipe := filepath.Join(t.TempDir(), "sleep.pid")
require.NoError(t, syscall.Mkfifo(pidPipe, 0o600))
// sleep outlasts the 10 s wait below, so a call that waits for it fails.
t.Setenv("PATH", fakeGPGPath(t,
"#!/bin/sh\nsleep 60 &\necho $! >'"+pidPipe+"'\nwait\n"))
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
signErr := make(chan error, 1)
go func() {
_, err := gpgSign(ctx, []byte("data"), GPGKeyID("any"))
signErr <- err
}()
pid, err := os.ReadFile(pidPipe) //nolint:gosec // G304: path inside t.TempDir()
require.NoError(t, err)
n, err := strconv.Atoi(strings.TrimSpace(string(pid)))
require.NoError(t, err)
sleep, err := os.FindProcess(n)
require.NoError(t, err)
t.Cleanup(func() { require.NoError(t, sleep.Kill()) })
cancel()
// The call should return about gpgWaitDelay (one second) after the
// cancel. 10 s is far above that and well under the 30 s test timeout,
// which would abort the whole package before the cleanup kills sleep.
select {
case err := <-signErr:
require.ErrorIs(t, err, context.Canceled)
case <-time.After(10 * time.Second):
t.Fatal("the call waited for the child holding gpg's output to exit")
}
}
// TestBuildPassesContextToSigning checks that a caller can cancel the gpg
// runs that sign a manifest through the context given to Build.
func TestBuildPassesContextToSigning(t *testing.T) {
t.Parallel()
b := NewBuilder()
b.SetSigningOptions(&SigningOptions{KeyID: "any"})
ctx, cancel := context.WithCancel(context.Background())
cancel()
require.ErrorIs(t, b.Build(ctx, io.Discard), context.Canceled)
}
mfer/manifest.go
+28 -13
View File
@@ -9,9 +9,18 @@ import (
"github.com/multiformats/go-multihash"
)
var (
errOuterNotSet = errors.New("pbOuter not set")
errUUIDNotSet = errors.New("UUID not set")
errSHA256NotSet = errors.New("SHA256 hash not set")
)
// manifest holds the internal representation of a manifest file.
// Use NewManifestFromFile or NewManifestFromReader to load an existing manifest,
// or use Builder to create a new one.
// Use NewManifestFromFile or NewManifestFromReader to load an existing
// manifest, or use Builder to create a new one.
//
// Whether this type should be exported is an open design question owned by
// the repository owner; see README design question 13.
type manifest struct {
pbInner *MFFile
pbOuter *MFFileOuter
@@ -23,8 +32,9 @@ type manifest struct {
func (m *manifest) String() string {
count := 0
if m.pbInner != nil {
count = len(m.pbInner.Files)
count = len(m.pbInner.GetFiles())
}
return fmt.Sprintf("<Manifest count=%d>", count)
}
@@ -33,7 +43,8 @@ func (m *manifest) Files() []*MFFilePath {
if m.pbInner == nil {
return nil
}
return m.pbInner.Files
return m.pbInner.GetFiles()
}
// signatureString generates the canonical string used for signing/verification.
@@ -41,20 +52,24 @@ func (m *manifest) Files() []*MFFilePath {
// Requires pbOuter to be set with Uuid and Sha256 fields.
func (m *manifest) signatureString() (string, error) {
if m.pbOuter == nil {
return "", errors.New("pbOuter not set")
}
if len(m.pbOuter.Uuid) == 0 {
return "", errors.New("UUID not set")
}
if len(m.pbOuter.Sha256) == 0 {
return "", errors.New("SHA256 hash not set")
return "", errOuterNotSet
}
mh, err := multihash.Encode(m.pbOuter.Sha256, multihash.SHA2_256)
if len(m.pbOuter.GetUuid()) == 0 {
return "", errUUIDNotSet
}
if len(m.pbOuter.GetSha256()) == 0 {
return "", errSHA256NotSet
}
mh, err := multihash.Encode(m.pbOuter.GetSha256(), multihash.SHA2_256)
if err != nil {
return "", fmt.Errorf("failed to encode multihash: %w", err)
}
uuidStr := hex.EncodeToString(m.pbOuter.Uuid)
uuidStr := hex.EncodeToString(m.pbOuter.GetUuid())
mhStr := hex.EncodeToString(mh)
return fmt.Sprintf("%s-%s-%s", MAGIC, uuidStr, mhStr), nil
}
mfer/scanner.go
+298 -147
View File
@@ -43,12 +43,20 @@ type ScanStatus struct {
// ScannerOptions configures scanner behavior.
type ScannerOptions struct {
IncludeDotfiles bool // Include files and directories starting with a dot (default: exclude)
FollowSymLinks bool // Resolve symlinks instead of skipping them
IncludeTimestamps bool // Include createdAt timestamp in manifest (default: omit for determinism)
Fs afero.Fs // Filesystem to use, defaults to OsFs if nil
SigningOptions *SigningOptions // GPG signing options (nil = no signing)
Seed string // If set, derive a deterministic UUID from this seed
// IncludeDotfiles includes files and directories starting with a dot
// (default: exclude).
IncludeDotfiles bool
// FollowSymLinks resolves symlinks instead of skipping them.
FollowSymLinks bool
// IncludeTimestamps includes a createdAt timestamp in the manifest
// (default: omit for determinism).
IncludeTimestamps bool
// Fs is the filesystem to use, defaults to OsFs if nil.
Fs afero.Fs
// SigningOptions holds GPG signing options (nil = no signing).
SigningOptions *SigningOptions
// Seed, if set, derives a deterministic UUID from this seed.
Seed string
}
// FileEntry represents a file that has been enumerated.
@@ -79,10 +87,12 @@ func NewScannerWithOptions(opts *ScannerOptions) *Scanner {
if opts == nil {
opts = &ScannerOptions{}
}
fs := opts.Fs
if fs == nil {
fs = afero.NewOsFs()
}
return &Scanner{
files: make([]*FileEntry, 0),
options: opts,
@@ -96,47 +106,63 @@ func (s *Scanner) EnumerateFile(filePath string) error {
if err != nil {
return err
}
info, err := s.fs.Stat(abs)
if err != nil {
return err
}
// For single files, use the filename as the relative path
basePath := filepath.Dir(abs)
return s.enumerateFileWithInfo(filepath.Base(abs), basePath, info, nil)
}
// EnumeratePath walks a directory path and adds all files to the scanner.
// If progress is non-nil, status updates are sent as files are discovered.
// The progress channel is closed when the method returns.
func (s *Scanner) EnumeratePath(inputPath string, progress chan<- EnumerateStatus) error {
func (s *Scanner) EnumeratePath(
inputPath string,
progress chan<- EnumerateStatus,
) error {
if progress != nil {
defer close(progress)
}
abs, err := filepath.Abs(inputPath)
if err != nil {
return err
}
afs := afero.NewReadOnlyFs(afero.NewBasePathFs(s.fs, abs))
return s.enumerateFS(afs, abs, progress)
}
// EnumeratePaths walks multiple directory paths and adds all files to the scanner.
// If progress is non-nil, status updates are sent as files are discovered.
// The progress channel is closed when the method returns.
func (s *Scanner) EnumeratePaths(progress chan<- EnumerateStatus, inputPaths ...string) error {
func (s *Scanner) EnumeratePaths(
progress chan<- EnumerateStatus,
inputPaths ...string,
) error {
if progress != nil {
defer close(progress)
}
for _, p := range inputPaths {
abs, err := filepath.Abs(p)
if err != nil {
return err
}
afs := afero.NewReadOnlyFs(afero.NewBasePathFs(s.fs, abs))
if err := s.enumerateFS(afs, abs, progress); err != nil {
err = s.enumerateFS(afs, abs, progress)
if err != nil {
return err
}
}
return nil
}
@@ -144,31 +170,230 @@ func (s *Scanner) EnumeratePaths(progress chan<- EnumerateStatus, inputPaths ...
// If progress is non-nil, status updates are sent as files are discovered.
// The progress channel is closed when the method returns.
// basePath is used to compute absolute paths for file reading.
func (s *Scanner) EnumerateFS(afs afero.Fs, basePath string, progress chan<- EnumerateStatus) error {
func (s *Scanner) EnumerateFS(
afs afero.Fs,
basePath string,
progress chan<- EnumerateStatus,
) error {
if progress != nil {
defer close(progress)
}
return s.enumerateFS(afs, basePath, progress)
}
// enumerateFS is the internal implementation that doesn't close the progress channel.
func (s *Scanner) enumerateFS(afs afero.Fs, basePath string, progress chan<- EnumerateStatus) error {
// Files returns a copy of all files added to the scanner.
func (s *Scanner) Files() []*FileEntry {
s.mu.RLock()
defer s.mu.RUnlock()
out := make([]*FileEntry, len(s.files))
copy(out, s.files)
return out
}
// FileCount returns the number of files in the scanner.
func (s *Scanner) FileCount() FileCount {
s.mu.RLock()
defer s.mu.RUnlock()
return FileCount(len(s.files))
}
// TotalBytes returns the total size of all files in the scanner.
func (s *Scanner) TotalBytes() FileSize {
s.mu.RLock()
defer s.mu.RUnlock()
return s.totalBytes
}
// ToManifest reads all file contents, computes hashes, and generates a manifest.
// If progress is non-nil, status updates are sent approximately once per second.
// The progress channel is closed when the method returns.
// The manifest is written to the provided io.Writer.
func (s *Scanner) ToManifest(
ctx context.Context, w io.Writer, progress chan<- ScanStatus,
) error {
if progress != nil {
defer close(progress)
}
s.mu.RLock()
files := make([]*FileEntry, len(s.files))
copy(files, s.files)
totalFiles := FileCount(len(files))
var totalBytes FileSize
for _, f := range files {
totalBytes += f.Size
}
s.mu.RUnlock()
builder := s.configureBuilder()
var (
scannedFiles FileCount
scannedBytes FileSize
)
lastProgressTime := time.Now()
startTime := time.Now()
pt := &scanProgressTracker{
progress: progress,
totalFiles: totalFiles,
totalBytes: totalBytes,
startTime: startTime,
lastProgress: &lastProgressTime,
}
for _, entry := range files {
// Check for cancellation
select {
case <-ctx.Done():
return ctx.Err()
default:
}
bytesRead, err := s.scanFile(builder, pt, entry, scannedFiles, scannedBytes)
if err != nil {
return err
}
scannedFiles++
scannedBytes += bytesRead
}
// Send final progress (ETA is 0 at completion; remaining bytes are 0,
// so computeRateETA yields eta 0 and the same average rate as before)
if progress != nil {
rate, _ := computeRateETA(time.Since(startTime), scannedBytes, totalBytes)
sendScanStatus(progress, ScanStatus{
TotalFiles: totalFiles,
ScannedFiles: scannedFiles,
TotalBytes: totalBytes,
ScannedBytes: scannedBytes,
BytesPerSec: rate,
ETA: 0,
})
}
// Build and write manifest
return builder.Build(ctx, w)
}
// configureBuilder constructs a manifest builder configured from the
// scanner options.
func (s *Scanner) configureBuilder() *Builder {
builder := NewBuilder()
if s.options.IncludeTimestamps {
builder.SetIncludeTimestamps(true)
}
if s.options.SigningOptions != nil {
builder.SetSigningOptions(s.options.SigningOptions)
}
if s.options.Seed != "" {
builder.SetSeed(s.options.Seed)
}
return builder
}
// scanFile hashes a single file into the builder, forwarding per-file
// progress updates, and returns the number of bytes read.
func (s *Scanner) scanFile(
builder *Builder,
pt *scanProgressTracker,
entry *FileEntry,
scannedFiles FileCount,
scannedBytes FileSize,
) (FileSize, error) {
// Open file
f, err := s.fs.Open(string(entry.AbsPath))
if err != nil {
return 0, err
}
// Create progress channel for this file
var (
fileProgress chan FileHashProgress
wg sync.WaitGroup
)
if pt.progress != nil {
fileProgress = make(chan FileHashProgress, 1)
wg.Add(1)
go func(base FileSize, done FileCount) {
defer wg.Done()
pt.forward(fileProgress, done, base)
}(scannedBytes, scannedFiles)
}
// Add to manifest with progress channel
bytesRead, err := builder.AddFile(
entry.Path,
entry.Size,
entry.Mtime,
f,
fileProgress,
)
_ = f.Close()
// Close channel and wait for goroutine to finish
if fileProgress != nil {
close(fileProgress)
wg.Wait()
}
if err != nil {
return 0, err
}
log.Verbosef("+ %s (%s)", entry.Path, humanize.IBytes(sizeToUint64(bytesRead)))
return bytesRead, nil
}
// enumerateFS is the internal implementation that doesn't close the
// progress channel.
func (s *Scanner) enumerateFS(
afs afero.Fs,
basePath string,
progress chan<- EnumerateStatus,
) error {
return afero.Walk(afs, "/", func(p string, info fs.FileInfo, err error) error {
if err != nil {
return err
}
if !s.options.IncludeDotfiles && IsHiddenPath(p) {
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
return s.enumerateFileWithInfo(p, basePath, info, progress)
})
}
// enumerateFileWithInfo adds a file with pre-existing fs.FileInfo.
func (s *Scanner) enumerateFileWithInfo(filePath string, basePath string, info fs.FileInfo, progress chan<- EnumerateStatus) error {
func (s *Scanner) enumerateFileWithInfo(
filePath string,
basePath string,
info fs.FileInfo,
progress chan<- EnumerateStatus,
) error {
if info.IsDir() {
// Manifests contain only files, directories are implied
return nil
@@ -193,11 +418,13 @@ func (s *Scanner) enumerateFileWithInfo(filePath string, basePath string, info f
realPath, err := filepath.EvalSymlinks(absPath)
if err != nil {
// Skip broken symlinks
return nil
return nil //nolint:nilerr // broken symlinks are skipped by design
}
realInfo, err := s.fs.Stat(realPath)
if err != nil {
return nil
// Skip symlinks whose target cannot be stat'd
return nil //nolint:nilerr // unreadable targets are skipped by design
}
// Skip if symlink points to a directory
if realInfo.IsDir() {
@@ -232,160 +459,78 @@ func (s *Scanner) enumerateFileWithInfo(filePath string, basePath string, info f
return nil
}
// Files returns a copy of all files added to the scanner.
func (s *Scanner) Files() []*FileEntry {
s.mu.RLock()
defer s.mu.RUnlock()
out := make([]*FileEntry, len(s.files))
copy(out, s.files)
return out
// scanProgressTracker carries the shared state needed to report rate-limited
// scan progress updates.
type scanProgressTracker struct {
progress chan<- ScanStatus
totalFiles FileCount
totalBytes FileSize
startTime time.Time
lastProgress *time.Time
}
// FileCount returns the number of files in the scanner.
func (s *Scanner) FileCount() FileCount {
s.mu.RLock()
defer s.mu.RUnlock()
return FileCount(len(s.files))
}
// TotalBytes returns the total size of all files in the scanner.
func (s *Scanner) TotalBytes() FileSize {
s.mu.RLock()
defer s.mu.RUnlock()
return s.totalBytes
}
// ToManifest reads all file contents, computes hashes, and generates a manifest.
// If progress is non-nil, status updates are sent approximately once per second.
// The progress channel is closed when the method returns.
// The manifest is written to the provided io.Writer.
func (s *Scanner) ToManifest(ctx context.Context, w io.Writer, progress chan<- ScanStatus) error {
if progress != nil {
defer close(progress)
}
s.mu.RLock()
files := make([]*FileEntry, len(s.files))
copy(files, s.files)
totalFiles := FileCount(len(files))
var totalBytes FileSize
for _, f := range files {
totalBytes += f.Size
}
s.mu.RUnlock()
builder := NewBuilder()
if s.options.IncludeTimestamps {
builder.SetIncludeTimestamps(true)
}
if s.options.SigningOptions != nil {
builder.SetSigningOptions(s.options.SigningOptions)
}
if s.options.Seed != "" {
builder.SetSeed(s.options.Seed)
}
var scannedFiles FileCount
var scannedBytes FileSize
lastProgressTime := time.Now()
startTime := time.Now()
for _, entry := range files {
// Check for cancellation
select {
case <-ctx.Done():
return ctx.Err()
default:
}
// Open file
f, err := s.fs.Open(string(entry.AbsPath))
if err != nil {
return err
}
// Create progress channel for this file
var fileProgress chan FileHashProgress
var wg sync.WaitGroup
if progress != nil {
fileProgress = make(chan FileHashProgress, 1)
wg.Add(1)
go func(baseScannedBytes FileSize) {
defer wg.Done()
// forward relays per-file hash progress to the scan progress channel,
// rate-limited to one update per second.
func (pt *scanProgressTracker) forward(
fileProgress <-chan FileHashProgress,
scannedFiles FileCount,
baseBytes FileSize,
) {
for p := range fileProgress {
// Send progress at most once per second
now := time.Now()
if now.Sub(lastProgressTime) >= time.Second {
elapsed := now.Sub(startTime).Seconds()
currentBytes := baseScannedBytes + p.BytesRead
var rate float64
var eta time.Duration
if elapsed > 0 && currentBytes > 0 {
rate = float64(currentBytes) / elapsed
remainingBytes := totalBytes - currentBytes
if rate > 0 {
eta = time.Duration(float64(remainingBytes)/rate) * time.Second
if now.Sub(*pt.lastProgress) < time.Second {
continue
}
}
sendScanStatus(progress, ScanStatus{
TotalFiles: totalFiles,
currentBytes := baseBytes + p.BytesRead
rate, eta := computeRateETA(now.Sub(pt.startTime), currentBytes, pt.totalBytes)
sendScanStatus(pt.progress, ScanStatus{
TotalFiles: pt.totalFiles,
ScannedFiles: scannedFiles,
TotalBytes: totalBytes,
TotalBytes: pt.totalBytes,
ScannedBytes: currentBytes,
BytesPerSec: rate,
ETA: eta,
})
lastProgressTime = now
*pt.lastProgress = now
}
}
}(scannedBytes)
}
// Add to manifest with progress channel
bytesRead, err := builder.AddFile(
entry.Path,
entry.Size,
entry.Mtime,
f,
fileProgress,
// computeRateETA returns the average throughput over elapsed time and the
// estimated time to process the remaining bytes at that rate.
func computeRateETA(
elapsed time.Duration,
done FileSize,
total FileSize,
) (float64, time.Duration) {
var (
rate float64
eta time.Duration
)
_ = f.Close()
// Close channel and wait for goroutine to finish
if fileProgress != nil {
close(fileProgress)
wg.Wait()
if elapsed > 0 && done > 0 {
rate = float64(done) / elapsed.Seconds()
remaining := total - done
if rate > 0 {
eta = time.Duration(float64(remaining)/rate) * time.Second
}
}
if err != nil {
return err
return rate, eta
}
log.Verbosef("+ %s (%s)", entry.Path, humanize.IBytes(uint64(bytesRead)))
scannedFiles++
scannedBytes += bytesRead
// sizeToUint64 converts a FileSize to uint64 for display, clamping
// negative values to zero so the conversion cannot overflow.
func sizeToUint64(v FileSize) uint64 {
if v < 0 {
return 0
}
// Send final progress (ETA is 0 at completion)
if progress != nil {
elapsed := time.Since(startTime).Seconds()
var rate float64
if elapsed > 0 {
rate = float64(scannedBytes) / elapsed
}
sendScanStatus(progress, ScanStatus{
TotalFiles: totalFiles,
ScannedFiles: scannedFiles,
TotalBytes: totalBytes,
ScannedBytes: scannedBytes,
BytesPerSec: rate,
ETA: 0,
})
}
// Build and write manifest
return builder.Build(w)
return uint64(v)
}
// IsHiddenPath returns true if the path or any of its parent directories
@@ -396,17 +541,21 @@ func IsHiddenPath(p string) bool {
if tp == "." || tp == "/" {
return false
}
if strings.HasPrefix(tp, ".") {
return true
}
for {
d, f := path.Split(tp)
if strings.HasPrefix(f, ".") {
return true
}
if d == "" {
return false
}
tp = d[0 : len(d)-1] // trim trailing slash from dir
}
}
@@ -417,6 +566,7 @@ func sendEnumerateStatus(ch chan<- EnumerateStatus, status EnumerateStatus) {
if ch == nil {
return
}
select {
case ch <- status:
default:
@@ -430,6 +580,7 @@ func sendScanStatus(ch chan<- ScanStatus, status ScanStatus) {
if ch == nil {
return
}
select {
case ch <- status:
default:
mfer/scanner_test.go
+82 -42
View File
@@ -1,3 +1,4 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
@@ -12,6 +13,8 @@ import (
)
func TestNewScanner(t *testing.T) {
t.Parallel()
s := NewScanner()
assert.NotNil(t, s)
assert.Equal(t, FileCount(0), s.FileCount())
@@ -19,12 +22,18 @@ func TestNewScanner(t *testing.T) {
}
func TestNewScannerWithOptions(t *testing.T) {
t.Parallel()
t.Run("nil options", func(t *testing.T) {
t.Parallel()
s := NewScannerWithOptions(nil)
assert.NotNil(t, s)
})
t.Run("with options", func(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
opts := &ScannerOptions{
IncludeDotfiles: true,
@@ -37,6 +46,8 @@ func TestNewScannerWithOptions(t *testing.T) {
}
func TestScannerEnumerateFile(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, afero.WriteFile(fs, "/test.txt", []byte("hello world"), 0o644))
@@ -54,6 +65,8 @@ func TestScannerEnumerateFile(t *testing.T) {
}
func TestScannerEnumerateFileMissing(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
s := NewScannerWithOptions(&ScannerOptions{Fs: fs})
err := s.EnumerateFile("/nonexistent.txt")
@@ -61,11 +74,14 @@ func TestScannerEnumerateFileMissing(t *testing.T) {
}
func TestScannerEnumeratePath(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir/subdir", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("one"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/file2.txt", []byte("two"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/subdir/file3.txt", []byte("three"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/subdir/file3.txt", []byte("three"), 0o644))
s := NewScannerWithOptions(&ScannerOptions{Fs: fs})
err := s.EnumeratePath("/testdir", nil)
@@ -76,6 +92,8 @@ func TestScannerEnumeratePath(t *testing.T) {
}
func TestScannerEnumeratePathWithProgress(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("one"), 0o644))
@@ -100,6 +118,8 @@ func TestScannerEnumeratePathWithProgress(t *testing.T) {
}
func TestScannerEnumeratePaths(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/dir1", 0o755))
require.NoError(t, fs.MkdirAll("/dir2", 0o755))
@@ -114,13 +134,20 @@ func TestScannerEnumeratePaths(t *testing.T) {
}
func TestScannerExcludeDotfiles(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir/.hidden", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/visible.txt", []byte("visible"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/.hidden.txt", []byte("hidden"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/.hidden/inside.txt", []byte("inside"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/visible.txt", []byte("visible"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/.hidden.txt", []byte("hidden"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/.hidden/inside.txt", []byte("inside"), 0o644))
t.Run("exclude by default", func(t *testing.T) {
t.Parallel()
s := NewScannerWithOptions(&ScannerOptions{Fs: fs, IncludeDotfiles: false})
err := s.EnumeratePath("/testdir", nil)
require.NoError(t, err)
@@ -131,6 +158,8 @@ func TestScannerExcludeDotfiles(t *testing.T) {
})
t.Run("include when enabled", func(t *testing.T) {
t.Parallel()
s := NewScannerWithOptions(&ScannerOptions{Fs: fs, IncludeDotfiles: true})
err := s.EnumeratePath("/testdir", nil)
require.NoError(t, err)
@@ -140,34 +169,43 @@ func TestScannerExcludeDotfiles(t *testing.T) {
}
func TestScannerToManifest(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("content one"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/file2.txt", []byte("content two"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/file1.txt", []byte("content one"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/file2.txt", []byte("content two"), 0o644))
s := NewScannerWithOptions(&ScannerOptions{Fs: fs})
err := s.EnumeratePath("/testdir", nil)
require.NoError(t, err)
var buf bytes.Buffer
err = s.ToManifest(context.Background(), &buf, nil)
require.NoError(t, err)
// Manifest should have magic bytes
assert.True(t, buf.Len() > 0)
assert.Positive(t, buf.Len())
assert.Equal(t, MAGIC, string(buf.Bytes()[:8]))
}
func TestScannerToManifestWithProgress(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/file.txt", bytes.Repeat([]byte("x"), 1000), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/file.txt", bytes.Repeat([]byte("x"), 1000), 0o644))
s := NewScannerWithOptions(&ScannerOptions{Fs: fs})
err := s.EnumeratePath("/testdir", nil)
require.NoError(t, err)
var buf bytes.Buffer
progress := make(chan ScanStatus, 10)
err = s.ToManifest(context.Background(), &buf, progress)
@@ -188,12 +226,15 @@ func TestScannerToManifestWithProgress(t *testing.T) {
}
func TestScannerToManifestContextCancellation(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir", 0o755))
// Create many files to ensure we have time to cancel
for i := 0; i < 100; i++ {
for i := range 100 {
name := string(rune('a'+i%26)) + string(rune('0'+i/26)) + ".txt"
require.NoError(t, afero.WriteFile(fs, "/testdir/"+name, bytes.Repeat([]byte("x"), 100), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/"+name, bytes.Repeat([]byte("x"), 100), 0o644))
}
s := NewScannerWithOptions(&ScannerOptions{Fs: fs})
@@ -204,24 +245,30 @@ func TestScannerToManifestContextCancellation(t *testing.T) {
cancel() // Cancel immediately
var buf bytes.Buffer
err = s.ToManifest(ctx, &buf, nil)
assert.ErrorIs(t, err, context.Canceled)
}
func TestScannerToManifestEmptyScanner(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
s := NewScannerWithOptions(&ScannerOptions{Fs: fs})
var buf bytes.Buffer
err := s.ToManifest(context.Background(), &buf, nil)
require.NoError(t, err)
// Should still produce a valid manifest
assert.True(t, buf.Len() > 0)
assert.Positive(t, buf.Len())
assert.Equal(t, MAGIC, string(buf.Bytes()[:8]))
}
func TestScannerFilesCopiesSlice(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, afero.WriteFile(fs, "/test.txt", []byte("hello"), 0o644))
@@ -236,10 +283,13 @@ func TestScannerFilesCopiesSlice(t *testing.T) {
}
func TestScannerEnumerateFS(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir/sub", 0o755))
require.NoError(t, afero.WriteFile(fs, "/testdir/file.txt", []byte("hello"), 0o644))
require.NoError(t, afero.WriteFile(fs, "/testdir/sub/nested.txt", []byte("world"), 0o644))
require.NoError(t,
afero.WriteFile(fs, "/testdir/sub/nested.txt", []byte("world"), 0o644))
// Create a basepath filesystem
baseFs := afero.NewBasePathFs(fs, "/testdir")
@@ -252,51 +302,37 @@ func TestScannerEnumerateFS(t *testing.T) {
}
func TestSendEnumerateStatusNonBlocking(t *testing.T) {
// Channel with no buffer - send should not block
t.Parallel()
// Nobody receives, so a blocking send would hang the test into its timeout.
ch := make(chan EnumerateStatus)
// This should not block
done := make(chan bool)
go func() {
sendEnumerateStatus(ch, EnumerateStatus{FilesFound: 1})
done <- true
}()
select {
case <-done:
// Success - did not block
case <-time.After(100 * time.Millisecond):
t.Fatal("sendEnumerateStatus blocked on full channel")
}
}
func TestSendScanStatusNonBlocking(t *testing.T) {
// Channel with no buffer - send should not block
t.Parallel()
// Nobody receives, so a blocking send would hang the test into its timeout.
ch := make(chan ScanStatus)
done := make(chan bool)
go func() {
sendScanStatus(ch, ScanStatus{ScannedFiles: 1})
done <- true
}()
select {
case <-done:
// Success - did not block
case <-time.After(100 * time.Millisecond):
t.Fatal("sendScanStatus blocked on full channel")
}
}
func TestSendStatusNilChannel(t *testing.T) {
t.Parallel()
// Should not panic with nil channel
sendEnumerateStatus(nil, EnumerateStatus{})
sendScanStatus(nil, ScanStatus{})
}
func TestScannerFileEntryFields(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
now := time.Now().Truncate(time.Second)
require.NoError(t, afero.WriteFile(fs, "/test.txt", []byte("content"), 0o644))
require.NoError(t, fs.Chtimes("/test.txt", now, now))
@@ -315,11 +351,13 @@ func TestScannerFileEntryFields(t *testing.T) {
}
func TestScannerLargeFileEnumeration(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll("/testdir", 0o755))
// Create 100 files
for i := 0; i < 100; i++ {
for i := range 100 {
name := "/testdir/" + string(rune('a'+i%26)) + string(rune('0'+i/26%10)) + ".txt"
require.NoError(t, afero.WriteFile(fs, name, []byte("data"), 0o644))
}
@@ -330,20 +368,20 @@ func TestScannerLargeFileEnumeration(t *testing.T) {
err := s.EnumeratePath("/testdir", progress)
require.NoError(t, err)
// Drain channel
for range progress {
}
// progress is fully buffered and closed; no draining needed
assert.Equal(t, FileCount(100), s.FileCount())
assert.Equal(t, FileSize(400), s.TotalBytes()) // 100 * 4 bytes
}
func TestIsHiddenPath(t *testing.T) {
t.Parallel()
tests := []struct {
path string
hidden bool
}{
{"file.txt", false},
{testFileName, false},
{".hidden", true},
{"dir/file.txt", false},
{"dir/.hidden", true},
@@ -360,6 +398,8 @@ func TestIsHiddenPath(t *testing.T) {
for _, tt := range tests {
t.Run(tt.path, func(t *testing.T) {
t.Parallel()
assert.Equal(t, tt.hidden, IsHiddenPath(tt.path), "IsHiddenPath(%q)", tt.path)
})
}
mfer/serialize.go
+65 -13
View File
@@ -2,9 +2,11 @@ package mfer
import (
"bytes"
"context"
"crypto/sha256"
"errors"
"fmt"
"math"
"time"
"github.com/google/uuid"
@@ -15,47 +17,80 @@ import (
// MAGIC is the file format magic bytes prefix (rot13 of "MANIFEST").
const MAGIC string = "ZNAVSRFG"
var (
// errInnerNotSet is returned by generate when the inner manifest is
// missing.
errInnerNotSet = errors.New("internal error: pbInner not set")
// errInternal is returned by generateOuter for the same condition.
// The two messages differ, and both are load-bearing for callers that
// match on text, so they are kept distinct.
errInternal = errors.New("internal error")
)
// nanosecondsInt32 converts t's nanosecond component to int32.
// time.Time.Nanosecond is documented to return a value in [0, 999999999],
// so the conversion cannot overflow. This sits directly in the manifest
// content path: silently substituting a default would zero every entry's
// mtime nanos and change the serialized bytes and their hash, so an
// out-of-contract value is a programming error and panics rather than
// being papered over.
func nanosecondsInt32(t time.Time) int32 {
n := t.Nanosecond()
if n < 0 || n > math.MaxInt32 {
panic(fmt.Sprintf(
"mfer: time.Time.Nanosecond out of contract: %d", n))
}
return int32(n)
}
func newTimestampFromTime(t time.Time) *Timestamp {
return &Timestamp{
Seconds: t.Unix(),
Nanos: int32(t.Nanosecond()),
Nanos: nanosecondsInt32(t),
}
}
func (m *manifest) generate() error {
func (m *manifest) generate(ctx context.Context) error {
if m.pbInner == nil {
return errors.New("internal error: pbInner not set")
return errInnerNotSet
}
if m.pbOuter == nil {
e := m.generateOuter()
e := m.generateOuter(ctx)
if e != nil {
return e
}
}
dat, err := proto.MarshalOptions{Deterministic: true}.Marshal(m.pbOuter)
if err != nil {
return fmt.Errorf("serialize: marshal outer: %w", err)
}
m.output = bytes.NewBuffer([]byte(MAGIC))
m.output = bytes.NewBufferString(MAGIC)
_, err = m.output.Write(dat)
if err != nil {
return fmt.Errorf("serialize: write output: %w", err)
}
return nil
}
func (m *manifest) generateOuter() error {
func (m *manifest) generateOuter(ctx context.Context) error {
if m.pbInner == nil {
return errors.New("internal error")
return errInternal
}
// Use fixed UUID if provided, otherwise generate a new one
var manifestUUID uuid.UUID
if len(m.fixedUUID) == 16 {
if len(m.fixedUUID) == uuidLength {
copy(manifestUUID[:], m.fixedUUID)
} else {
manifestUUID = uuid.New()
}
m.pbInner.Uuid = manifestUUID[:]
innerData, err := proto.MarshalOptions{Deterministic: true}.Marshal(m.pbInner)
@@ -65,23 +100,29 @@ func (m *manifest) generateOuter() error {
// Compress the inner data
idc := new(bytes.Buffer)
zw, err := zstd.NewWriter(idc, zstd.WithEncoderLevel(zstd.SpeedBestCompression))
if err != nil {
return fmt.Errorf("serialize: create compressor: %w", err)
}
_, err = zw.Write(innerData)
if err != nil {
return fmt.Errorf("serialize: compress: %w", err)
}
_ = zw.Close()
compressedData := idc.Bytes()
// Hash the compressed data for integrity verification before decompression
h := sha256.New()
if _, err := h.Write(compressedData); err != nil {
_, err = h.Write(compressedData)
if err != nil {
return fmt.Errorf("serialize: hash write: %w", err)
}
sha256Hash := h.Sum(nil)
m.pbOuter = &MFFileOuter{
@@ -95,29 +136,40 @@ func (m *manifest) generateOuter() error {
// Sign the manifest if signing options are provided
if m.signingOptions != nil && m.signingOptions.KeyID != "" {
return m.signOuter(ctx)
}
return nil
}
// signOuter signs the outer message with the configured GPG key and
// embeds the signature, signer fingerprint, and public key.
func (m *manifest) signOuter(ctx context.Context) error {
sigString, err := m.signatureString()
if err != nil {
return fmt.Errorf("failed to generate signature string: %w", err)
}
sig, err := gpgSign([]byte(sigString), m.signingOptions.KeyID)
sig, err := gpgSign(ctx, []byte(sigString), m.signingOptions.KeyID)
if err != nil {
return fmt.Errorf("failed to sign manifest: %w", err)
}
m.pbOuter.Signature = sig
fingerprint, err := gpgGetKeyFingerprint(m.signingOptions.KeyID)
fingerprint, err := gpgGetKeyFingerprint(ctx, m.signingOptions.KeyID)
if err != nil {
return fmt.Errorf("failed to get key fingerprint: %w", err)
}
m.pbOuter.Signer = fingerprint
pubKey, err := gpgExportPublicKey(m.signingOptions.KeyID)
pubKey, err := gpgExportPublicKey(ctx, m.signingOptions.KeyID)
if err != nil {
return fmt.Errorf("failed to export public key: %w", err)
}
m.pbOuter.SigningPubKey = pubKey
}
return nil
}
mfer/testdata/fuzz/FuzzNewManifestFromReader/empty
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("")
mfer/testdata/fuzz/FuzzNewManifestFromReader/magic-then-garbage
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFGy[i\x04\xe5O\x82A\x1d\xf4\xb0\xe2z7:U\xee\xa3\xf9\xd6m\xacZ\x9b\xce\x1d\xd9/{@\x1d\xa5y[i\x04\xe5O\x82A\x1d\xf4\xb0\xe2z7:U\xee\xa3\xf9\xd6m\xacZ\x9b\xce\x1d\xd9/{@\x1d\xa5")
mfer/testdata/fuzz/FuzzNewManifestFromReader/minimal
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06V\xc2\x06 \xa3\xf7\x97\xa7\xf3\x87:\x90)\\ӊj\xb9\xf7\xfaTJ\x1b\xe7:\xee\xbe\"V\xe0:\x8d(Z\xd6%\xca\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3\xba\fc(\xb5/\xfd\x04\x00\xb1\x02\x00\xa0\x06\x01\xaa\x06=\n\x05a.txt\x10\x01\x1a$\n\"\x12 ʗ\x81\x12\xca\x1b\xbd\xca\xfa\xc21\xb3\x9a#\xdcM\xa7\x86\xef\xf8\x14|Nr\xb9\x80w\x85\xaf\xeeH\xbb\xf2\x12\v\b\x80\x92\xb8Ø\xfe\xff\xff\xff\x01\xb2\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3s\xeeG\x80")
mfer/testdata/fuzz/FuzzNewManifestFromReader/signed
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06V\xc2\x06 \xa3\xf7\x97\xa7\xf3\x87:\x90)\\ӊj\xb9\xf7\xfaTJ\x1b\xe7:\xee\xbe\"V\xe0:\x8d(Z\xd6%\xca\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3\xba\fc(\xb5/\xfd\x04\x00\xb1\x02\x00\xa0\x06\x01\xaa\x06=\n\x05a.txt\x10\x01\x1a$\n\"\x12 ʗ\x81\x12\xca\x1b\xbd\xca\xfa\xc21\xb3\x9a#\xdcM\xa7\x86\xef\xf8\x14|Nr\xb9\x80w\x85\xaf\xeeH\xbb\xf2\x12\v\b\x80\x92\xb8Ø\xfe\xff\xff\xff\x01\xb2\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3s\xeeG\x80\xca\f\xe8\x03-----BEGIN PGP SIGNATURE-----\n\niQEzBAABCgAdFiEET1Yr+4Y/3GtRtO6IhypRF2zvI64FAmrBIXAACgkQhypRF2zv\nI67BQAf/QrpX2MjY15YGMGkjR5oIhnx/YV96aGYZyZThzb+l/R/N75iVFVkhX21d\nZhQqdCsORrodTPAXic2g2UGVXP9PhNMh7n6Wm3LsvQYjrRQGrQnqtCkut+3tUt8K\n7pt4OAnnwRSieaVImA1COmzxIrQQKNOs6UkgmAstGuPV0XZoeDiSG8TUYJ/vieCn\np5hC0FFXtzfw4NtkxSmkewE0xBxIwFCA/RfSHCGH3m5K+tRz41vMEgGbL1iEp6+V\nuBaoEc4hqCgEt+Af2pA8VHfqeu2vKiwggOpYpaILXZKVqH9+tWHL1EBv9t0vTsYE\n9D57euuR9+kOdngYNPieP1yn5dOSHg==\n=kvgL\n-----END PGP SIGNATURE-----\n\xd2\f(4F562BFB863FDC6B51B4EE88872A51176CEF23AE\xda\f\xb5\a-----BEGIN PGP PUBLIC KEY BLOCK-----\n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\nKoTjp4nxgQGy5WmeBzs4Hdm/\n=TCB8\n-----END PGP PUBLIC KEY BLOCK-----\n")
mfer/testdata/fuzz/FuzzNewManifestFromReader/size-above-payload
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06!\xc2\x06 \x91\x90*\xa5>\fݐ \x87\xbeaL\xc1\x05?\x0eR\xc18\xa4eՕ\xa95\xb9KʺoZ\xca\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3\xba\f-(\xb5/\xfd\x04\x00\x01\x01\x00\xa0\x06\x01\xaa\x06\a\n\x05a.txt\xb2\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3a[k'")
mfer/testdata/fuzz/FuzzNewManifestFromReader/size-below-payload
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06\x1f\xc2\x06 \x91\x90*\xa5>\fݐ \x87\xbeaL\xc1\x05?\x0eR\xc18\xa4eՕ\xa95\xb9KʺoZ\xca\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3\xba\f-(\xb5/\xfd\x04\x00\x01\x01\x00\xa0\x06\x01\xaa\x06\a\n\x05a.txt\xb2\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3a[k'")
mfer/testdata/fuzz/FuzzNewManifestFromReader/truncated-at-172
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06V\xc2\x06 \xa3\xf7\x97\xa7\xf3\x87:\x90)\\ӊj\xb9\xf7\xfaTJ\x1b\xe7:\xee\xbe\"V\xe0:\x8d(Z\xd6%\xca\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3\xba\fc(\xb5/\xfd\x04\x00\xb1\x02\x00\xa0\x06\x01\xaa\x06=\n\x05a.txt\x10\x01\x1a$\n\"\x12 ʗ\x81\x12\xca\x1b\xbd\xca\xfa\xc21\xb3\x9a#\xdcM\xa7\x86\xef\xf8\x14|Nr\xb9\x80w\x85\xaf\xeeH\xbb\xf2\x12\v\b\x80\x92\xb8Ø\xfe\xff\xff\xff\x01\xb2\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3s\xeeG")
mfer/testdata/fuzz/FuzzNewManifestFromReader/truncated-at-20
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06V\xc2\x06 ")
mfer/testdata/fuzz/FuzzNewManifestFromReader/truncated-at-4
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAV")
mfer/testdata/fuzz/FuzzNewManifestFromReader/truncated-at-8
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG")
mfer/testdata/fuzz/FuzzNewManifestFromReader/truncated-at-86
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06V\xc2\x06 \xa3\xf7\x97\xa7\xf3\x87:\x90)\\ӊj\xb9\xf7\xfaTJ\x1b\xe7:\xee\xbe\"V\xe0:\x8d(Z\xd6%\xca\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3\xba\fc(\xb5/\xfd\x04\x00\xb1\x02\x00\xa0\x06\x01")
mfer/testdata/fuzz/FuzzNewManifestFromReader/wrong-magic
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFX\xa8\x06\x01\xb0\x06\x01\xb8\x06V\xc2\x06 \xa3\xf7\x97\xa7\xf3\x87:\x90)\\ӊj\xb9\xf7\xfaTJ\x1b\xe7:\xee\xbe\"V\xe0:\x8d(Z\xd6%\xca\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3\xba\fc(\xb5/\xfd\x04\x00\xb1\x02\x00\xa0\x06\x01\xaa\x06=\n\x05a.txt\x10\x01\x1a$\n\"\x12 ʗ\x81\x12\xca\x1b\xbd\xca\xfa\xc21\xb3\x9a#\xdcM\xa7\x86\xef\xf8\x14|Nr\xb9\x80w\x85\xaf\xeeH\xbb\xf2\x12\v\b\x80\x92\xb8Ø\xfe\xff\xff\xff\x01\xb2\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3s\xeeG\x80")
mfer/testdata/fuzz/FuzzNewManifestFromReader/zstd-frame-claims-256mib-window
Vendored
+2
View File
File diff suppressed because one or more lines are too long
mfer/testdata/fuzz/FuzzNewManifestFromReader/zstd-frame-claims-8gib
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06\x01\xc2\x06 \xd6aQ\xa4\x85\xc0+\xbb\xca\x11\x11\a<\x019\x97\xb3\xbb3\xd0 \xd5U\xfa!\xaeAf<N@\x9d\xca\x06\x10\x93\x85\vpu\x85\xe4\x04\xe4\x95\x1a=\xdc\x1f\x05\xa3\xba\f\x12(\xb5/\xfd\xc0\x00\x00\x00\x00\x00\x02\x00\x00\x00\v\x00\x00\x00")
mfer/testdata/fuzz/FuzzNewManifestFromReader/zstd-frames-growing-windows
Vendored
+2
View File
@@ -0,0 +1,2 @@
go test fuzz v1
[]byte("ZNAVSRFG\xa8\x06\x01\xb0\x06\x01\xb8\x06\x01\xc2\x06 \xc8g?\xa0\xc9\xc5]\xb57M\xe5O#\x04\xb2\x12\xc6)@=\xd2\xf3f/͉~\x10\x15\xfbkD\xca\x06\x10o\x1c*N;]L~\x9a\x8b\x1d.?@Qb\xba\f\x89\t(\xb5/\xfd\x00\x00\x01\x00\x00(\xb5/\xfd\x00\x01\x01\x00\x00(\xb5/\xfd\x00\x02\x01\x00\x00(\xb5/\xfd\x00\x03\x01\x00\x00(\xb5/\xfd\x00\x04\x01\x00\x00(\xb5/\xfd\x00\x05\x01\x00\x00(\xb5/\xfd\x00\x06\x01\x00\x00(\xb5/\xfd\x00\a\x01\x00\x00(\xb5/\xfd\x00\b\x01\x00\x00(\xb5/\xfd\x00\t\x01\x00\x00(\xb5/\xfd\x00\n\x01\x00\x00(\xb5/\xfd\x00\v\x01\x00\x00(\xb5/\xfd\x00\f\x01\x00\x00(\xb5/\xfd\x00\r\x01\x00\x00(\xb5/\xfd\x00\x0e\x01\x00\x00(\xb5/\xfd\x00\x0f\x01\x00\x00(\xb5/\xfd\x00\x10\x01\x00\x00(\xb5/\xfd\x00\x11\x01\x00\x00(\xb5/\xfd\x00\x12\x01\x00\x00(\xb5/\xfd\x00\x13\x01\x00\x00(\xb5/\xfd\x00\x14\x01\x00\x00(\xb5/\xfd\x00\x15\x01\x00\x00(\xb5/\xfd\x00\x16\x01\x00\x00(\xb5/\xfd\x00\x17\x01\x00\x00(\xb5/\xfd\x00\x18\x01\x00\x00(\xb5/\xfd\x00\x19\x01\x00\x00(\xb5/\xfd\x00\x1a\x01\x00\x00(\xb5/\xfd\x00\x1b\x01\x00\x00(\xb5/\xfd\x00\x1c\x01\x00\x00(\xb5/\xfd\x00\x1d\x01\x00\x00(\xb5/\xfd\x00\x1e\x01\x00\x00(\xb5/\xfd\x00\x1f\x01\x00\x00(\xb5/\xfd\x00 \x01\x00\x00(\xb5/\xfd\x00!\x01\x00\x00(\xb5/\xfd\x00\"\x01\x00\x00(\xb5/\xfd\x00#\x01\x00\x00(\xb5/\xfd\x00$\x01\x00\x00(\xb5/\xfd\x00%\x01\x00\x00(\xb5/\xfd\x00&\x01\x00\x00(\xb5/\xfd\x00'\x01\x00\x00(\xb5/\xfd\x00(\x01\x00\x00(\xb5/\xfd\x00)\x01\x00\x00(\xb5/\xfd\x00*\x01\x00\x00(\xb5/\xfd\x00+\x01\x00\x00(\xb5/\xfd\x00,\x01\x00\x00(\xb5/\xfd\x00-\x01\x00\x00(\xb5/\xfd\x00.\x01\x00\x00(\xb5/\xfd\x00/\x01\x00\x00(\xb5/\xfd\x000\x01\x00\x00(\xb5/\xfd\x001\x01\x00\x00(\xb5/\xfd\x002\x01\x00\x00(\xb5/\xfd\x003\x01\x00\x00(\xb5/\xfd\x004\x01\x00\x00(\xb5/\xfd\x005\x01\x00\x00(\xb5/\xfd\x006\x01\x00\x00(\xb5/\xfd\x007\x01\x00\x00(\xb5/\xfd\x008\x01\x00\x00(\xb5/\xfd\x009\x01\x00\x00(\xb5/\xfd\x00:\x01\x00\x00(\xb5/\xfd\x00;\x01\x00\x00(\xb5/\xfd\x00<\x01\x00\x00(\xb5/\xfd\x00=\x01\x00\x00(\xb5/\xfd\x00>\x01\x00\x00(\xb5/\xfd\x00?\x01\x00\x00(\xb5/\xfd\x00@\x01\x00\x00(\xb5/\xfd\x00A\x01\x00\x00(\xb5/\xfd\x00B\x01\x00\x00(\xb5/\xfd\x00C\x01\x00\x00(\xb5/\xfd\x00D\x01\x00\x00(\xb5/\xfd\x00E\x01\x00\x00(\xb5/\xfd\x00F\x01\x00\x00(\xb5/\xfd\x00G\x01\x00\x00(\xb5/\xfd\x00H\x01\x00\x00(\xb5/\xfd\x00I\x01\x00\x00(\xb5/\xfd\x00J\x01\x00\x00(\xb5/\xfd\x00K\x01\x00\x00(\xb5/\xfd\x00L\x01\x00\x00(\xb5/\xfd\x00M\x01\x00\x00(\xb5/\xfd\x00N\x01\x00\x00(\xb5/\xfd\x00O\x01\x00\x00(\xb5/\xfd\x00P\x01\x00\x00(\xb5/\xfd\x00Q\x01\x00\x00(\xb5/\xfd\x00R\x01\x00\x00(\xb5/\xfd\x00S\x01\x00\x00(\xb5/\xfd\x00T\x01\x00\x00(\xb5/\xfd\x00U\x01\x00\x00(\xb5/\xfd\x00V\x01\x00\x00(\xb5/\xfd\x00W\x01\x00\x00(\xb5/\xfd\x00X\x01\x00\x00(\xb5/\xfd\x00Y\x01\x00\x00(\xb5/\xfd\x00Z\x01\x00\x00(\xb5/\xfd\x00[\x01\x00\x00(\xb5/\xfd\x00\\\x01\x00\x00(\xb5/\xfd\x00]\x01\x00\x00(\xb5/\xfd\x00^\x01\x00\x00(\xb5/\xfd\x00_\x01\x00\x00(\xb5/\xfd\x00`\x01\x00\x00(\xb5/\xfd\x00a\x01\x00\x00(\xb5/\xfd\x00b\x01\x00\x00(\xb5/\xfd\x00c\x01\x00\x00(\xb5/\xfd\x00d\x01\x00\x00(\xb5/\xfd\x00e\x01\x00\x00(\xb5/\xfd\x00f\x01\x00\x00(\xb5/\xfd\x00g\x01\x00\x00(\xb5/\xfd\x00h\x01\x00\x00(\xb5/\xfd\x00i\x01\x00\x00(\xb5/\xfd\x00j\x01\x00\x00(\xb5/\xfd\x00k\x01\x00\x00(\xb5/\xfd\x00l\x01\x00\x00(\xb5/\xfd\x00m\x01\x00\x00(\xb5/\xfd\x00n\x01\x00\x00(\xb5/\xfd\x00o\x01\x00\x00(\xb5/\xfd\x00p\x01\x00\x00(\xb5/\xfd\x00q\x01\x00\x00(\xb5/\xfd\x00r\x01\x00\x00(\xb5/\xfd\x00s\x01\x00\x00(\xb5/\xfd\x00t\x01\x00\x00(\xb5/\xfd\x00u\x01\x00\x00(\xb5/\xfd\x00v\x01\x00\x00(\xb5/\xfd\x00w\x01\x00\x00(\xb5/\xfd\x00x\x01\x00\x00(\xb5/\xfd\x00y\x01\x00\x00(\xb5/\xfd\x00z\x01\x00\x00(\xb5/\xfd\x00{\x01\x00\x00(\xb5/\xfd\x00|\x01\x00\x00(\xb5/\xfd\x00}\x01\x00\x00(\xb5/\xfd\x00~\x01\x00\x00(\xb5/\xfd\x00\x7f\x01\x00\x00(\xb5/\xfd\x00\x80\x01\x00\x00")
mfer/testdata/fuzz/FuzzNewManifestFromReader/zstd-two-frames-over-limit
Vendored
+2
View File
File diff suppressed because one or more lines are too long
mfer/url.go
+2
View File
@@ -32,12 +32,14 @@ func (b BaseURL) JoinPath(path RelFilePath) (FileURL, error) {
for i, seg := range segments {
segments[i] = url.PathEscape(seg)
}
ref, err := url.Parse(strings.Join(segments, "/"))
if err != nil {
return "", err
}
resolved := base.ResolveReference(ref)
return FileURL(resolved.String()), nil
}
mfer/url_test.go
+18 -3
View File
@@ -1,3 +1,4 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
@@ -8,19 +9,27 @@ import (
)
func TestBaseURLJoinPath(t *testing.T) {
t.Parallel()
tests := []struct {
base BaseURL
path RelFilePath
expected string
}{
{"https://example.com/dir/", "file.txt", "https://example.com/dir/file.txt"},
{"https://example.com/dir", "file.txt", "https://example.com/dir/file.txt"},
{"https://example.com/dir/", testFileName, "https://example.com/dir/file.txt"},
{"https://example.com/dir", testFileName, "https://example.com/dir/file.txt"},
{"https://example.com/", "sub/file.txt", "https://example.com/sub/file.txt"},
{"https://example.com/dir/", "file with spaces.txt", "https://example.com/dir/file%20with%20spaces.txt"},
{
"https://example.com/dir/",
"file with spaces.txt",
"https://example.com/dir/file%20with%20spaces.txt",
},
}
for _, tt := range tests {
t.Run(string(tt.base)+"+"+string(tt.path), func(t *testing.T) {
t.Parallel()
result, err := tt.base.JoinPath(tt.path)
require.NoError(t, err)
assert.Equal(t, tt.expected, string(result))
@@ -29,16 +38,22 @@ func TestBaseURLJoinPath(t *testing.T) {
}
func TestBaseURLString(t *testing.T) {
t.Parallel()
b := BaseURL("https://example.com/")
assert.Equal(t, "https://example.com/", b.String())
}
func TestFileURLString(t *testing.T) {
t.Parallel()
f := FileURL("https://example.com/file.txt")
assert.Equal(t, "https://example.com/file.txt", f.String())
}
func TestManifestURLString(t *testing.T) {
t.Parallel()
m := ManifestURL("https://example.com/index.mf")
assert.Equal(t, "https://example.com/index.mf", m.String())
}
package.json
+10
View File
@@ -0,0 +1,10 @@
{
"name": "mfer",
"version": "0.1.0",
"private": true,
"description": "Development tooling for the mfer repository: prettier, used by script/fmt and script/fmt-check to format and verify Markdown and JSON.",
"license": "WTFPL",
"devDependencies": {
"prettier": "3.9.6"
}
}
script/bootstrap
+8 -9
View File
@@ -130,18 +130,17 @@ main() {
if missing make; then pkg_install gnumake make make make; fi
# ---- JS / docs repos ----
# ensure_node
# ensure_yarn
# install_js_deps
# This is a Go repo, but node and yarn are required anyway: prettier
# formats the Markdown and JSON, and script/fmt-check verifies it.
# The version is pinned by package.json/yarn.lock, whose integrity
# hashes --frozen-lockfile enforces.
ensure_node
ensure_yarn
install_js_deps
# ---- Go repos ----
if missing go; then pkg_install go golang go go; fi
# golangci-lint: packaged in nix, brew, and apk. On apt there is no
# package: download a specific release archive from GitHub and
# verify its hash (verify_sha256), never curl | sh.
if missing golangci-lint; then
pkg_install golangci-lint golangci-lint golangci-lint golangci-lint
fi
# No golangci-lint: script/lint runs it in Docker only.
go mod download
# ---- Python repos ----
script/cibuild
+15 -5
View File
@@ -1,14 +1,24 @@
#!/bin/sh
# script/cibuild: run the CI build. The Dockerfile runs script/check
# (via make check), so a successful build implies all checks pass.
# Generic: needs no adaptation. The Gitea workflow runs this on push.
# script/cibuild: run the CI build; the Gitea workflow runs this on push.
# It builds the image with the same command as script/docker. --no-cache
# because the checks the final stage depends on are RUN steps, and a
# cached one is a check that did not run.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
main() {
cd "$ROOT"
docker build .
# Own line: a failing command substitution inside an argument does
# not trip `set -e`, so the inline form degrades silently to an
# empty constant. The VERSION build argument takes precedence over
# the version a build stage derives from the .git in the context.
version="$(git describe --tags --always --dirty 2>/dev/null || true)"
[ -n "$version" ] || version="unknown"
docker build --no-cache \
--build-arg VERSION="$version" \
-t "$("$SCRIPT_DIR/projectname")" .
}
main "$@"
script/docker
+11 -2
View File
@@ -1,7 +1,8 @@
#!/bin/sh
# script/docker: build the Docker image tagged with the project name.
# Identical in all repos; the tag comes from script/projectname.
# Generic: needs no adaptation.
# --no-cache because the gate phases the final stage depends on are RUN
# steps, and a cached one is a check that did not run.
set -eu
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
@@ -9,7 +10,15 @@ ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
main() {
cd "$ROOT"
docker build -t "$("$SCRIPT_DIR/projectname")" .
# Own line: a failing command substitution inside an argument does
# not trip `set -e`, so the inline form degrades silently to an
# empty constant. The VERSION build argument takes precedence over
# the version a build stage derives from the .git in the context.
version="$(git describe --tags --always --dirty 2>/dev/null || true)"
[ -n "$version" ] || version="unknown"
docker build --no-cache \
--build-arg VERSION="$version" \
-t "$("$SCRIPT_DIR/projectname")" .
}
main "$@"
script/fmt
+4 -5
View File
@@ -2,7 +2,8 @@
# script/fmt: format all files (writes).
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
# Regenerate mfer/mf.pb.go from mfer/mf.proto if it is missing or stale
# (mirrors the old Makefile prerequisite; the generated file is
@@ -18,10 +19,8 @@ main() {
cd "$ROOT"
ensure_pb
gofumpt -l -w mfer internal cmd
golangci-lint run --fix
# prettier is best-effort, as in the old Makefile (- prefix)
prettier -w *.json || true
prettier -w *.md || true
# Markdown and JSON, over the same file set script/fmt-check verifies.
"$SCRIPT_DIR/prettier" --write
}
main "$@"
script/fmt-check
+5 -19
View File
@@ -1,28 +1,14 @@
#!/bin/sh
# script/fmt-check: check formatting (read-only). Same scope as
# script/fmt, but fails instead of writing.
# script/fmt, but fails instead of writing: Go via script/fmt-check-go,
# Markdown and JSON via script/prettier.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
# Regenerate mfer/mf.pb.go from mfer/mf.proto if it is missing or stale
# (mirrors the old Makefile prerequisite; the generated file is
# committed, so this is normally a no-op).
ensure_pb() {
if [ ! -f mfer/mf.pb.go ] ||
[ -n "$(find mfer/mf.proto -newer mfer/mf.pb.go 2>/dev/null)" ]; then
(cd mfer && go generate .)
fi
}
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
main() {
cd "$ROOT"
ensure_pb
if [ -n "$(gofmt -l .)" ]; then
echo "gofmt: files need formatting:" >&2
gofmt -l . >&2
exit 1
fi
"$SCRIPT_DIR/fmt-check-go"
"$SCRIPT_DIR/prettier" --check
}
main "$@"
script/fmt-check-go
Executable
+29
View File
@@ -0,0 +1,29 @@
#!/bin/sh
# script/fmt-check-go: check Go formatting (read-only). Split out from
# script/fmt-check so the Docker lint stage, whose image has no node and
# therefore no prettier, can run the Go half on its own.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
# Regenerate mfer/mf.pb.go from mfer/mf.proto if it is missing or stale
# (mirrors the old Makefile prerequisite; the generated file is
# committed, so this is normally a no-op).
ensure_pb() {
if [ ! -f mfer/mf.pb.go ] ||
[ -n "$(find mfer/mf.proto -newer mfer/mf.pb.go 2>/dev/null)" ]; then
(cd mfer && go generate .)
fi
}
main() {
cd "$ROOT"
ensure_pb
if [ -n "$(gofmt -l .)" ]; then
echo "gofmt: files need formatting:" >&2
gofmt -l . >&2
exit 1
fi
}
main "$@"
script/fuzz
Executable
+17
View File
@@ -0,0 +1,17 @@
#!/bin/sh
# script/fuzz: fuzz the manifest parser for one minute. Run by hand only:
# script/test already runs the committed seed corpus as ordinary tests,
# and CI never fuzzes. An input that fails is written to
# mfer/testdata/fuzz/FuzzNewManifestFromReader/; once the parser is fixed,
# commit it there as a regression seed.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
go test -run '^$' -fuzz '^FuzzNewManifestFromReader$' \
-fuzztime 1m -parallel 2 ./mfer
}
main "$@"
script/lint
+11 -8
View File
@@ -1,17 +1,20 @@
#!/bin/sh
# script/lint: run the linter.
# script/lint: run golangci-lint, in Docker only. Builds the lint stage of
# the Dockerfile, whose build runs the linter, so a successful build is a
# clean lint. --no-cache because a cached build runs no linter. The image
# is removed afterwards, whatever the outcome.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
main() {
cd "$ROOT"
golangci-lint run
if [ -n "$(gofmt -l .)" ]; then
echo "gofmt: files need formatting:" >&2
gofmt -l . >&2
exit 1
fi
# Tagged per run, so concurrent runs never remove each other's image.
image="$("$SCRIPT_DIR/projectname")-lint:$$"
# A failed build leaves no image, so there is nothing to remove then.
trap 'docker image rm "$image" >/dev/null 2>&1 || true' EXIT INT TERM
docker build --no-cache --target lint -t "$image" .
}
main "$@"
script/prettier
Executable
+69
View File
@@ -0,0 +1,69 @@
#!/bin/sh
# script/prettier: run prettier over this repo's canonical file set.
#
# Takes exactly one mode argument, --write or --check, and applies the
# same patterns in both modes. script/fmt and script/fmt-check both go
# through here, so the set of files that get formatted and the set that
# get verified cannot drift apart.
#
# Failures are never swallowed: a missing prettier is an error, not a
# silent skip. A formatter that quietly does nothing is worse than one
# that fails loudly.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
usage() {
echo "usage: script/prettier --write|--check" >&2
exit 2
}
# Prefer the version pinned by package.json/yarn.lock so that CI and
# developer machines format identically. Fall back to a prettier on PATH,
# but say so, because a different version formats differently.
find_prettier() {
if [ -x "$ROOT/node_modules/.bin/prettier" ]; then
printf '%s\n' "$ROOT/node_modules/.bin/prettier"
return 0
fi
if command -v prettier >/dev/null 2>&1; then
echo "prettier: node_modules/.bin/prettier is absent; using the" \
"prettier on PATH, which may be a different version than the" \
"one pinned in package.json. Run script/bootstrap to install" \
"the pinned version." >&2
command -v prettier
return 0
fi
return 1
}
main() {
[ "$#" -eq 1 ] || usage
case "$1" in
--write | --check) mode="$1" ;;
*) usage ;;
esac
cd "$ROOT"
if ! prettier_bin="$(find_prettier)"; then
echo "prettier: not found." >&2
echo " Install it with: script/bootstrap" >&2
echo " (installs the version pinned in package.json/yarn.lock)" >&2
exit 1
fi
# Markdown and JSON, repo-wide rather than root-only, so files in
# subdirectories (docs/, once it exists) are covered too. Exclusions
# live in .prettierignore; REPO_POLICIES.md is excluded there because
# it is a verbatim copy of an upstream document.
#
# --no-error-on-unmatched-pattern is deliberately NOT used: both
# patterns always match at least one tracked file (README.md,
# package.json), so an empty match means the glob broke, and prettier
# erroring out is exactly what we want rather than a vacuous pass.
"$prettier_bin" "$mode" "**/*.md"
"$prettier_bin" "$mode" "**/*.json"
}
main "$@"
script/test
+6 -1
View File
@@ -17,7 +17,12 @@ ensure_pb() {
main() {
cd "$ROOT"
ensure_pb
go test -v --timeout 10s ./...
go test -timeout 30s -race -cover ./... ||
{
echo "--- Rerunning with -v for details ---"
go test -timeout 30s -race -v ./...
exit 1
}
}
main "$@"
yarn.lock
+8
View File
@@ -0,0 +1,8 @@
# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
# yarn lockfile v1
prettier@3.9.6:
version "3.9.6"
resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.6.tgz#b3ea5146515d40fc53f18aa63f74dfab1e10dbf6"
integrity sha512-OpN0zzVdiaiAhxpuuj5efpIS4sY9j7bY6uR5mnj5yPzGkdkjNKSJeUThPb60Jw29QuAZgA4o+/iB49kFiaBX6g==