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sneak/mfer:main sneak/mfer:issue-170-path-listed-once sneak/mfer:issue-169-inner-version sneak/mfer:next sneak/mfer:issue-116-gomodguard
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1 Commits
issue-169-inner-version .. c5df0e3139
Author SHA1 Message Date
sneak c5df0e3139 Record file mode in the manifest, 0000 unless asked (closes #161)
check / check (push) Failing after 6s
Details 
MFFilePath gains mode (field 304): a file's permission bits, 0777 at
most, or 0000, meaning none recorded. gen and freshen record real modes
only with --include-permissions (ScannerOptions.IncludePermissions); the
builder keeps only mode.Perm(), so setuid, setgid and sticky are never
written. list -l and export show the mode in octal. check reports
MODE_MISMATCH for a recorded mode other than 0000 the file lacks. fetch
refuses a manifest with a mode above 0777 before requesting any file,
sets only the permission bits of each recorded mode on the files it
writes, and downloads again a present file whose mode differs. The decoding-cost bound counts a file
entry at 176 bytes, up from 160.

Model: opus-5-5
 2026-10-06 06:27:56 +00:00
28 changed files with 729 additions and 841 deletions
Expand all files Collapse all files
Dockerfile
+5 -17
View File
@@ -11,8 +11,8 @@ RUN golangci-lint run --config .golangci.yml ./...
# Test phase. -race needs cgo and so a C compiler, which the Debian Go
# image ships and the alpine one does not.
# golang:1.27.1, 2026-10-06
FROM golang@sha256:1e93e00a31255c07e9a34c4207f3006e1501730c5323697cee7dfb827fdae44c AS test
# golang:1.23.12, 2026-03-14
FROM golang@sha256:60deed95d3888cc5e4d9ff8a10c54e5edc008c6ae3fba6187be6fb592e19e8c0 AS test
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
@@ -21,24 +21,12 @@ RUN go test -timeout 90s -race -cover ./... || \
{ echo "--- Rerunning with -v for details ---"; \
go test -timeout 90s -race -v ./...; exit 1; }
# Vulnerability check, built only by script/vulncheck (make vulncheck).
# No stage depends on it, so the image build does not run it.
# golang:1.27.1, 2026-10-06
FROM golang@sha256:1e93e00a31255c07e9a34c4207f3006e1501730c5323697cee7dfb827fdae44c AS vulncheck
# govulncheck v1.8.0, 2026-10-06
RUN go install golang.org/x/vuln/cmd/govulncheck@709015412431dd2b5b28a53c06c70bc02d49074c
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN govulncheck ./...
# Build stage. Nothing is wanted from the lint or test phase; the copies
# Build stage. Nothing is wanted from either phase above; the copies
# are what make BuildKit build them first, so this stage cannot run
# unless lint and test passed. The Debian Go image ships git, which the
# version step below needs.
# golang:1.27.1, 2026-10-06
FROM golang@sha256:1e93e00a31255c07e9a34c4207f3006e1501730c5323697cee7dfb827fdae44c AS builder
# golang:1.23.12, 2026-03-14
FROM golang@sha256:60deed95d3888cc5e4d9ff8a10c54e5edc008c6ae3fba6187be6fb592e19e8c0 AS builder
COPY --from=lint /src/go.sum /dev/null
COPY --from=test /src/go.sum /dev/null
# A tar-stream context keeps the sender's file owners, which git refuses.
Makefile
+1 -4
View File
@@ -1,4 +1,4 @@
.PHONY: bootstrap setup test lint fmt fmt-check check docker hooks build generate fuzz vulncheck
.PHONY: bootstrap setup test lint fmt fmt-check check docker hooks build generate fuzz
# Makefile targets are thin shims; the implementations live in script/
# per the scripts-to-rule-them-all pattern (see the Entrypoints section
@@ -39,6 +39,3 @@ generate:
fuzz:
@script/fuzz
vulncheck:
@script/vulncheck
README.md
+2 -7
View File
@@ -23,7 +23,7 @@ javascript library is planned.
# Getting Started
`mfer` builds from source with Go 1.27.1 or later. The generated protobuf code
`mfer` builds from source with a Go 1.23+ toolchain. The generated protobuf code
is committed, so no `protoc` toolchain is required:
```sh
@@ -70,7 +70,7 @@ provide:
- `script/bootstrap` — install all dependencies, idempotently: Go and the
modules of `go.mod`; node (the version `.nvmrc` names, through nvm when there
is no node on `PATH`) and yarn, plus the prettier version pinned in
`package.json`/`yarn.lock`; `gofumpt` v0.12.0 and `protoc-gen-go` v1.36.12,
`package.json`/`yarn.lock`; `gofumpt` v0.12.0 and `protoc-gen-go` v1.36.11,
installed into `bin/` with `go install`, each pinned to a commit; and `protoc`
33.4, unpacked into `bin/protoc` from its release archive once the archive
matches the sha256 the script holds for this platform. Each of those three is
@@ -98,11 +98,6 @@ provide:
as ordinary tests
- `script/lint` — run `golangci-lint` in Docker: builds only the `lint` stage of
the `Dockerfile`, whose build runs the linter, uncached so it runs every time
- `script/vulncheck` (`make vulncheck`) — run `govulncheck` in Docker: builds
only the `vulncheck` stage of the `Dockerfile`, uncached, which reports known
vulnerabilities in the code `mfer` calls, from the Go vulnerability database.
`script/check` does not run it, so an advisory published later never turns the
gate red
- `script/fmt` — format all code and docs (writes): `script/gofumpt --write` and
`script/prettier --write`
- `script/gofumpt` — run `gofumpt` over every Go file in the repository in the
docs/FORMAT.md
+4 -16
View File
@@ -37,7 +37,7 @@ The outer message contains:
| `uuid` | 105 | bytes | Random v4 UUID; must match the inner message UUID |
| `innerMessage` | 199 | bytes | Zstd-compressed serialized `MFFile` message |
| `signature` | 201 | bytes (optional) | GPG signature (ASCII-armored or binary) |
| `signer` | 202 | bytes (optional) | Fingerprint of the signing key |
| `signer` | 202 | bytes (optional) | Full GPG key ID of the signer |
| `signingPubKey` | 203 | bytes (optional) | Full GPG signing public key |
### SHA-256 Hash
@@ -50,14 +50,11 @@ allows verifying data integrity before decompression.
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 MiB. It writes zstd frames with a
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. It also refuses an inner
message whose file entries, hashes, timestamps and MIME types, counted at 176,
112, 64 and 16 bytes each, add up to more than 8 times its size. It refuses a
manifest file larger than 258 MiB without reading the rest of it: zstd's worst
case grows a 256 MiB inner message by 1/256 to 257 MiB, and the last MiB is room
for the signature, the signing key and the other outer fields.
112, 64 and 16 bytes each, add up to more than 8 times its size.
## Inner Message (`MFFile`)
@@ -140,16 +137,7 @@ Where:
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. The
signing key's public key goes in `signingPubKey` and its fingerprint, in hex, in
`signer`.
A verifier accepts a signed manifest only if `signingPubKey` holds exactly one
primary key, `signature` is one good signature over the canonical string made by
that key (or one of its subkeys), and `signer` is that key's fingerprint. The
reference implementation refuses to load a manifest that fails these checks;
`check` and `fetch` given `--require-signature` then compare the required
fingerprint with `signer`.
canonical string and stored in the `signature` field of the outer message.
## Deterministic Serialization
go.mod
+15 -14
View File
@@ -1,28 +1,29 @@
module sneak.berlin/go/mfer
go 1.27.1
go 1.23
require (
github.com/davecgh/go-spew v1.1.1
github.com/dustin/go-humanize v1.1.0
github.com/klauspost/compress v1.20.1
github.com/dustin/go-humanize v1.0.1
github.com/google/uuid v1.1.2
github.com/klauspost/compress v1.18.2
github.com/multiformats/go-multihash v0.2.3
github.com/spf13/afero v1.15.0
github.com/spf13/afero v1.8.0
github.com/stretchr/testify v1.12.1
github.com/urfave/cli/v3 v3.14.0
golang.org/x/term v0.46.0
google.golang.org/protobuf v1.36.12
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
google.golang.org/protobuf v1.28.1
)
require (
github.com/klauspost/cpuid/v2 v2.4.0 // indirect
github.com/minio/sha256-simd v1.0.1 // indirect
github.com/mr-tron/base58 v1.3.0 // indirect
github.com/multiformats/go-varint v0.1.0 // indirect
github.com/klauspost/cpuid/v2 v2.0.9 // indirect
github.com/minio/sha256-simd v1.0.0 // indirect
github.com/mr-tron/base58 v1.2.0 // indirect
github.com/multiformats/go-varint v0.0.6 // indirect
github.com/spaolacci/murmur3 v1.1.0 // indirect
go.yaml.in/yaml/v3 v3.0.5 // indirect
golang.org/x/crypto v0.57.0 // indirect
golang.org/x/sys v0.48.0 // indirect
golang.org/x/text v0.42.0 // indirect
lukechampine.com/blake3 v1.4.1 // indirect
golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e // indirect
golang.org/x/sys v0.1.0 // indirect
golang.org/x/text v0.3.6 // indirect
lukechampine.com/blake3 v1.1.6 // indirect
)
go.sum
+463 -28
View File
@@ -1,40 +1,475 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
cloud.google.com/go v0.44.3/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dustin/go-humanize v1.1.0 h1:dbKTrvD0klcbBV/h4AWJdMuZogJACoMlvWIWZ5b2xWg=
github.com/dustin/go-humanize v1.1.0/go.mod h1:hc1CvRkJMsgxqjmjMQF3QNRAZBwY8AXBAzKYoSX9sFI=
github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
github.com/klauspost/compress v1.20.1 h1:T7kKElXUMXrUJ2E9QhQhxFtcK5rPyLdsGZvdbLMPdiQ=
github.com/klauspost/compress v1.20.1/go.mod h1:LUdAzn7YLVvxLpc7y3V1m40wESHTgc1422pwwBSKYuI=
github.com/klauspost/cpuid/v2 v2.4.0 h1:S6Hrbc7+ywsr0r+RLapfGBHfyefhCTwEh3A0tV913Dw=
github.com/klauspost/cpuid/v2 v2.4.0/go.mod h1:19jmZ9mjzoF//ddRSUsv0zfBTJWh3QJh9FNxZTMrGxU=
github.com/minio/sha256-simd v1.0.1 h1:6kaan5IFmwTNynnKKpDHe6FWHohJOHhCPchzK49dzMM=
github.com/minio/sha256-simd v1.0.1/go.mod h1:Pz6AKMiUdngCLpeTL/RJY1M9rUuPMYujV5xJjtbRSN8=
github.com/mr-tron/base58 v1.3.0 h1:K6Y13R2h+dku0wOqKtecgRnBUBPrZzLZy5aIj8lCcJI=
github.com/mr-tron/base58 v1.3.0/go.mod h1:2BuubE67DCSWwVfx37JWNG8emOC0sHEU4/HpcYgCLX8=
github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
github.com/envoyproxy/go-control-plane v0.9.7/go.mod h1:cwu0lG7PUMfa9snN8LXBig5ynNVH9qI8YYLbd1fK2po=
github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
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github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4=
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github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
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github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
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github.com/google/martian/v3 v3.0.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0=
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github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
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github.com/google/pprof v0.0.0-20200212024743-f11f1df84d12/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
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github.com/google/pprof v0.0.0-20200430221834-fc25d7d30c6d/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
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github.com/google/uuid v1.1.2 h1:EVhdT+1Kseyi1/pUmXKaFxYsDNy9RQYkMWRH68J/W7Y=
github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8/go.mod h1:dvDLG8qkwmyD9a/MJJN3XJcT3xFxOKAvTZGvuZmac9g=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/klauspost/compress v1.18.2 h1:iiPHWW0YrcFgpBYhsA6D1+fqHssJscY/Tm/y2Uqnapk=
github.com/klauspost/compress v1.18.2/go.mod h1:R0h/fSBs8DE4ENlcrlib3PsXS61voFxhIs2DeRhCvJ4=
github.com/klauspost/cpuid/v2 v2.0.4/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
github.com/klauspost/cpuid/v2 v2.0.9 h1:lgaqFMSdTdQYdZ04uHyN2d/eKdOMyi2YLSvlQIBFYa4=
github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/minio/sha256-simd v1.0.0 h1:v1ta+49hkWZyvaKwrQB8elexRqm6Y0aMLjCNsrYxo6g=
github.com/minio/sha256-simd v1.0.0/go.mod h1:OuYzVNI5vcoYIAmbIvHPl3N3jUzVedXbKy5RFepssQM=
github.com/mr-tron/base58 v1.2.0 h1:T/HDJBh4ZCPbU39/+c3rRvE0uKBQlU27+QI8LJ4t64o=
github.com/mr-tron/base58 v1.2.0/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
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github.com/multiformats/go-multihash v0.2.3/go.mod h1:dXgKXCXjBzdscBLk9JkjINiEsCKRVch90MdaGiKsvSM=
github.com/multiformats/go-varint v0.1.0 h1:i2wqFp4sdl3IcIxfAonHQV9qU5OsZ4Ts9IOoETFs5dI=
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github.com/multiformats/go-varint v0.0.6 h1:gk85QWKxh3TazbLxED/NlDVv8+q+ReFJk7Y2W/KhfNY=
github.com/multiformats/go-varint v0.0.6/go.mod h1:3Ls8CIEsrijN6+B7PbrXRPxHRPuXSrVKRY101jdMZYE=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/sftp v1.13.1/go.mod h1:3HaPG6Dq1ILlpPZRO0HVMrsydcdLt6HRDccSgb87qRg=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
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github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
github.com/spf13/afero v1.15.0 h1:b/YBCLWAJdFWJTN9cLhiXXcD7mzKn9Dm86dNnfyQw1I=
github.com/spf13/afero v1.15.0/go.mod h1:NC2ByUVxtQs4b3sIUphxK0NioZnmxgyCrfzeuq8lxMg=
github.com/spf13/afero v1.8.0 h1:5MmtuhAgYeU6qpa7w7bP0dv6MBYuup0vekhSpSkoq60=
github.com/spf13/afero v1.8.0/go.mod h1:CtAatgMJh6bJEIs48Ay/FOnkljP3WeGUG0MC1RfAqwo=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.12.1 h1:EuwCh5fleGS7H32xRwO3wRGT7DxrDhLAT6FF8MpWDWE=
github.com/stretchr/testify v1.12.1/go.mod h1:MDEgiDPPsNp5cuIrHPPCyornHKgEVbtFUmoNlxoYthg=
github.com/urfave/cli/v3 v3.14.0 h1:a8414NQlHJs0c/iBsulKLzlES0n/lEAskbL2LKpU4/s=
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go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
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go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk=
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golang.org/x/crypto v0.57.0 h1:3ZVCjf8Ggz7zneR/EHRVx68Ctf+2pmIMP2UFhh9cC6M=
golang.org/x/crypto v0.57.0/go.mod h1:Fdz0i5U6CoizGwLda9DttjSk6qlZo25zYNtR+ycvuZA=
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golang.org/x/sys v0.48.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
golang.org/x/term v0.46.0 h1:3+OXuTbaKDgwk8jTi3aSLHRlmWqHEUDUtxnbFigO4YE=
golang.org/x/term v0.46.0/go.mod h1:+K02xbkittuwc0Am4abfA3Fc+XRGXkvBXNO88NCXPoc=
golang.org/x/text v0.42.0 h1:JbOZXgfeCPU9gacVtYliJqOhD+zhrEqK4LfdpmlUZqI=
golang.org/x/text v0.42.0/go.mod h1:ojzP1Z+2QtioaF8DTtO8K5q7JWVVYwZKenzujK0Zd0E=
google.golang.org/protobuf v1.36.12 h1:pJOKDDOyeXErUroCihFAd5LQuwXBSpVnKGrj5o/fwxc=
google.golang.org/protobuf v1.36.12/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e h1:T8NU3HyQ8ClP4SEE+KbFlg6n0NhuTsN4MyznaarGsZM=
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google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/genproto v0.0.0-20210226172003-ab064af71705/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8=
google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
lukechampine.com/blake3 v1.1.6 h1:H3cROdztr7RCfoaTpGZFQsrqvweFLrqS73j7L7cmR5c=
lukechampine.com/blake3 v1.1.6/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
internal/cli/check.go
+20 -20
View File
@@ -112,17 +112,10 @@ func (mfa *CLIApp) fetchManifestToTemp(
}
tmpPath := tmpFile.Name()
// Copying stops one byte past mfa.maxManifestSize, which is enough to
// tell that the manifest is too large.
written, cpErr := io.Copy(tmpFile, io.LimitReader(rc, mfa.maxManifestSize+1))
_, cpErr := io.Copy(tmpFile, rc)
_ = rc.Close()
_ = tmpFile.Close()
if cpErr == nil && written > mfa.maxManifestSize {
cpErr = fmt.Errorf("%w of %d bytes", errManifestTooLarge, mfa.maxManifestSize)
}
if cpErr != nil {
_ = mfa.Fs.Remove(tmpPath)
@@ -133,8 +126,10 @@ func (mfa *CLIApp) fetchManifestToTemp(
}
// verifyRequiredSigner enforces the --require-signature fingerprint
// against the key that made the manifest's signature.
func verifyRequiredSigner(chk *mfer.Checker, requiredSigner string) error {
// 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))
@@ -150,17 +145,22 @@ func verifyRequiredSigner(chk *mfer.Checker, requiredSigner string) error {
errManifestNotSigned, requiredSigner)
}
// Loading the manifest checked that the signer is the fingerprint of
// the key that made the signature.
signer := string(chk.Signer())
// Compare fingerprints - must be exact match (case-insensitive)
if !strings.EqualFold(signer, requiredSigner) {
return fmt.Errorf("embedded signing key fingerprint %s %w %s",
signer, errSignerMismatch, 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)
}
log.Infof("manifest signature verified (signer: %s)", signer)
// 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
}
@@ -330,7 +330,7 @@ func (mfa *CLIApp) checkManifestOperation(
// Check signature requirement
requiredSigner := cmd.String(flagRequireSignature)
if requiredSigner != "" {
err = verifyRequiredSigner(chk, requiredSigner)
err = verifyRequiredSigner(ctx, chk, requiredSigner)
if err != nil {
return err
}
internal/cli/entry.go
+8 -10
View File
@@ -5,7 +5,6 @@ import (
"os"
"github.com/spf13/afero"
"sneak.berlin/go/mfer/mfer"
)
// NoColor disables colored output when set. Automatically true if the
@@ -57,15 +56,14 @@ func Run(appname, version, gitrev string) int {
// RunWithOptions creates and runs the CLI application with the given options.
func RunWithOptions(opts *RunOptions) int {
m := &CLIApp{
appname: opts.Appname,
version: opts.Version,
gitrev: opts.Gitrev,
exitCode: 0,
maxManifestSize: mfer.MaxManifestSize,
Stdin: opts.Stdin,
Stdout: opts.Stdout,
Stderr: opts.Stderr,
Fs: opts.Fs,
appname: opts.Appname,
version: opts.Version,
gitrev: opts.Gitrev,
exitCode: 0,
Stdin: opts.Stdin,
Stdout: opts.Stdout,
Stderr: opts.Stderr,
Fs: opts.Fs,
}
m.run(opts.Args)
internal/cli/entry_test.go
+1 -61
View File
@@ -354,39 +354,6 @@ func TestGenerateCommand(t *testing.T) {
assert.True(t, exists)
}
// TestGenerateSeededManifestBytes pins the exact bytes `gen --seed` writes
// for a fixed tree, so that a Go or dependency update that changes what
// mfer writes fails here. testdata/seeded.mf was written by an mfer built
// before such an update. The tree has enough files that zstd compresses
// the manifest instead of storing it as it is.
func TestGenerateSeededManifestBytes(t *testing.T) {
t.Parallel()
fs := afero.NewMemMapFs()
start := time.Date(2025, 6, 1, 0, 0, 0, 0, time.UTC)
for i := range 200 {
path := fmt.Sprintf("/testdir/d%d/f%03d.txt", i%10, i)
mtime := start.Add(time.Duration(i) * time.Second)
require.NoError(t, fs.MkdirAll(filepath.Dir(path), 0o755))
writeTestFile(t, fs, path, fmt.Sprintf("file %d\n", i))
require.NoError(t, fs.Chtimes(path, mtime, mtime))
}
opts := testOpts([]string{
testApp, cmdGenerate, "-q", "--seed", "mfer", "-o", testOutput, testDir,
}, fs)
require.Equal(t, 0, runCLI(opts), "stderr: %s", testStderr(t, opts))
got, err := afero.ReadFile(fs, testOutput)
require.NoError(t, err)
want, err := os.ReadFile("testdata/seeded.mf")
require.NoError(t, err)
assert.Equal(t, want, got)
}
func TestGenerateAndCheckCommand(t *testing.T) {
t.Parallel()
@@ -443,7 +410,7 @@ func TestGenerateRecordsModeOnlyWhenAsked(t *testing.T) {
listed := map[string]string{}
out := strings.TrimSuffix(testStdout(t, opts), "\n")
for line := range strings.SplitSeq(out, "\n") {
for _, line := range strings.Split(out, "\n") {
fields := strings.Split(line, "\t") // mode, size, mtime, path
require.Len(t, fields, 4, line)
listed[fields[3]] = fields[0]
@@ -613,33 +580,6 @@ func runCheckAfterRewrite(t *testing.T, rewritten, msg string) {
assert.Equal(t, 1, exitCode, msg)
}
// TestCheckRequireSignatureRefusesOtherSigningKey runs check
// --require-signature on a manifest signed by another key whose embedded
// public key block also holds the required key. check must refuse it. It
// needs gpg and is skipped without it, as the other signing tests are.
//
//nolint:paralleltest // signedManifest calls t.Setenv, which bars t.Parallel
func TestCheckRequireSignatureRefusesOtherSigningKey(t *testing.T) {
content := []byte("signed file")
manifest, required := manifestSignedByAnotherKey(t,
map[string][]byte{testFileTxt: content})
fs := afero.NewMemMapFs()
require.NoError(t, fs.MkdirAll(testDir, 0o755))
require.NoError(t, afero.WriteFile(fs,
filepath.Join(testDir, testFileTxt), content, 0o644))
require.NoError(t, afero.WriteFile(fs, testManifest, manifest, 0o644))
opts := testOpts([]string{
testApp, cmdCheck, "-q", testFlagBase, testDir,
"--" + flagRequireSignature, required, testManifest,
}, fs)
assert.Equal(t, 1, runCLI(opts))
assert.Contains(t, testStderr(t, opts),
"failed to load manifest: signature verification failed: "+
"embedded public key block must hold exactly one key, found 2")
}
func TestCheckCommandWithCorruptedFile(t *testing.T) {
t.Parallel()
internal/cli/errmsg_test.go
+13 -39
View File
@@ -9,14 +9,12 @@ import (
"os"
"os/exec"
"path/filepath"
"slices"
"testing"
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
urfcli "github.com/urfave/cli/v3"
"google.golang.org/protobuf/proto"
"sneak.berlin/go/mfer/mfer"
)
@@ -88,7 +86,8 @@ func TestVerifyRequiredSignerMessages(t *testing.T) {
t.Run("invalid fingerprint length", func(t *testing.T) {
t.Parallel()
err := verifyRequiredSigner(unsignedChecker(t), "12345678")
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")
@@ -97,7 +96,8 @@ func TestVerifyRequiredSignerMessages(t *testing.T) {
t.Run("manifest not signed", func(t *testing.T) {
t.Parallel()
err := verifyRequiredSigner(unsignedChecker(t), msgFpA)
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")
@@ -105,21 +105,23 @@ func TestVerifyRequiredSignerMessages(t *testing.T) {
}
// TestSignerMismatchMessage drives verifyRequiredSigner against a real signed
// manifest. The signing key's 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.
// 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 // signedManifest calls t.Setenv, which bars t.Parallel
func TestSignerMismatchMessage(t *testing.T) {
chk := signedChecker(t,
signedManifest(t, map[string][]byte{"f.txt": []byte("signed file")}))
err := verifyRequiredSigner(chk, msgFpB)
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 "+string(chk.Signer())+
"embedded signing key fingerprint "+embeddedFP+
" does not match required "+msgFpB)
}
@@ -189,34 +191,6 @@ func signedChecker(t *testing.T, manifest []byte) *mfer.Checker {
return chk
}
// manifestSignedByAnotherKey returns a manifest of files and the
// fingerprint of a throwaway key, the required key, that did not sign it.
// The manifest is signed by a second throwaway key; its embedded public key
// block holds the required key followed by the second key, and its signer
// field names the required key.
func manifestSignedByAnotherKey(
t *testing.T, files map[string][]byte,
) ([]byte, string) {
t.Helper()
required := new(mfer.MFFileOuter)
require.NoError(t, proto.Unmarshal(
signedManifest(t, files)[len(mfer.MAGIC):], required))
outer := new(mfer.MFFileOuter)
require.NoError(t, proto.Unmarshal(
signedManifest(t, files)[len(mfer.MAGIC):], outer))
outer.SigningPubKey = slices.Concat(
required.GetSigningPubKey(), outer.GetSigningPubKey())
outer.Signer = required.GetSigner()
data, err := proto.Marshal(outer)
require.NoError(t, err)
return append([]byte(mfer.MAGIC), data...), string(required.GetSigner())
}
func TestPathDoesNotExistMessage(t *testing.T) {
t.Parallel()
internal/cli/fetch.go
+13 -20
View File
@@ -361,7 +361,7 @@ func (mfa *CLIApp) fetchManifestOperation(
firstDelay: firstRetryDelay,
}
manifestData, files, err := mfa.fetchManifest(ctx, cmd, client, manifestURL)
manifestData, files, err := fetchManifest(ctx, cmd, client, manifestURL)
if err != nil {
return err
}
@@ -426,22 +426,20 @@ func (mfa *CLIApp) fetchManifestOperation(
// that lists a file where fetch writes another or a mode outside 0777. It
// returns the manifest as downloaded, to be saved once the files are in
// place, and the files it lists.
func (mfa *CLIApp) fetchManifest(
func fetchManifest(
ctx context.Context, cmd *cli.Command, client retryingClient, manifestURL string,
) ([]byte, []*mfer.MFFilePath, error) {
log.Infof("fetching manifest from %s", manifestURL)
// Read the whole manifest before parsing it, so that a connection
// lost partway through is retried rather than reported as a bad
// manifest. Reading stops one byte past mfa.maxManifestSize, which is
// enough to tell that the manifest is too large.
// manifest.
var manifestData []byte
err := client.get(ctx, manifestURL, func(resp *http.Response) error {
var readErr error
manifestData, readErr = io.ReadAll(
io.LimitReader(resp.Body, mfa.maxManifestSize+1))
manifestData, readErr = io.ReadAll(resp.Body)
return readErr
})
@@ -449,11 +447,6 @@ func (mfa *CLIApp) fetchManifest(
return nil, nil, fmt.Errorf("failed to fetch manifest: %w", err)
}
if int64(len(manifestData)) > mfa.maxManifestSize {
return nil, nil, fmt.Errorf("failed to fetch manifest: %w of %d bytes",
errManifestTooLarge, mfa.maxManifestSize)
}
// Parse manifest
//nolint:contextcheck // mfer loads a manifest without a context
manifest, err := mfer.NewManifestFromReader(bytes.NewReader(manifestData))
@@ -463,8 +456,7 @@ func (mfa *CLIApp) fetchManifest(
requiredSigner := cmd.String(flagRequireSignature)
if requiredSigner != "" {
//nolint:contextcheck // mfer loads a manifest without a context
err = verifyFetchedSigner(manifestData, requiredSigner)
err = verifyFetchedSigner(ctx, manifestData, requiredSigner)
if err != nil {
return nil, nil, err
}
@@ -546,7 +538,9 @@ func checkNoNameClash(files []*mfer.MFFilePath) error {
// exactly as check does. verifyRequiredSigner takes a Checker, which loads
// its manifest from a file, so the manifest is handed to it as a file in
// memory.
func verifyFetchedSigner(manifestData []byte, requiredSigner string) error {
func verifyFetchedSigner(
ctx context.Context, manifestData []byte, requiredSigner string,
) error {
memFs := afero.NewMemMapFs()
manifestPath := "/" + defaultManifestName
@@ -555,6 +549,7 @@ func verifyFetchedSigner(manifestData []byte, requiredSigner string) error {
return err
}
//nolint:contextcheck // mfer loads a manifest without a context
chk, err := mfer.NewChecker(&mfer.CheckerOptions{
ManifestPath: manifestPath,
BasePath: "/",
@@ -564,7 +559,7 @@ func verifyFetchedSigner(manifestData []byte, requiredSigner string) error {
return fmt.Errorf("failed to load manifest: %w", err)
}
return verifyRequiredSigner(chk, requiredSigner)
return verifyRequiredSigner(ctx, chk, requiredSigner)
}
// saveManifest writes the fetched manifest into dest under the default
@@ -644,7 +639,7 @@ func sanitizePath(p string) (string, error) {
func checkNoSymlinks(dest, p string) error {
current := dest
for part := range strings.SplitSeq(p, string(filepath.Separator)) {
for _, part := range strings.Split(p, string(filepath.Separator)) {
current = filepath.Join(current, part)
info, err := os.Lstat(current)
@@ -915,10 +910,8 @@ func saveResponse(
progress: progress,
}
// Copy content while hashing and reporting progress. One byte past
// the listed size is enough for finishDownload to report a size
// mismatch.
written, copyErr := io.Copy(pw, io.LimitReader(resp.Body, expectedSize+1))
// Copy content while hashing and reporting progress
written, copyErr := io.Copy(pw, resp.Body)
// Close file before checking errors (to flush writes)
closeErr := out.Close()
internal/cli/fetch_test.go
+13 -87
View File
@@ -19,14 +19,13 @@ import (
"sync/atomic"
"testing"
"time"
"uuid"
"github.com/google/uuid"
"github.com/klauspost/compress/zstd"
"github.com/multiformats/go-multihash"
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
urfcli "github.com/urfave/cli/v3"
"google.golang.org/protobuf/proto"
"sneak.berlin/go/mfer/mfer"
)
@@ -187,7 +186,12 @@ func chdirTemp(t *testing.T) string {
t.Helper()
destDir := t.TempDir()
t.Chdir(destDir)
origDir, err := os.Getwd()
require.NoError(t, err)
require.NoError(t, os.Chdir(destDir))
t.Cleanup(func() { _ = os.Chdir(origDir) })
return destDir
}
@@ -442,75 +446,6 @@ func TestFetchSizeMismatch(t *testing.T) {
"temp file should be cleaned up on size mismatch")
}
// zeros is an io.Reader of zero bytes without end.
type zeros struct{}
func (zeros) Read(p []byte) (int, error) {
clear(p)
return len(p), nil
}
// TestFetchStopsReadingFilePastListedSize serves a body that never ends
// for a file listed at 16 bytes. fetch must stop reading one byte past
// the listed size, report the size mismatch and remove its temp file.
//
//nolint:paralleltest // changes the process-global working directory
func TestFetchStopsReadingFilePastListedSize(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
_, _ = io.Copy(w, zeros{})
}))
defer server.Close()
chdirTemp(t)
err := downloadFile(context.Background(), testClient(),
server.URL+"/"+testFileTxt, ".", testFileTxt,
&mfer.MFFilePath{Path: testFileTxt, Size: 16}, nil)
require.ErrorIs(t, err, errSizeMismatch)
require.EqualError(t, err, "size mismatch: expected 16 bytes, got 17")
assert.NoFileExists(t, tempPathFor(testFileTxt))
}
// TestManifestDownloadStopsAtLimit serves a manifest that never ends to
// fetch and to check, with the most they download of a manifest lowered
// to 64 KiB. Each must stop reading at that limit, fail with an error
// naming it and leave no temp file.
func TestManifestDownloadStopsAtLimit(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
_, _ = io.Copy(w, zeros{})
}))
defer server.Close()
tmpDir := t.TempDir()
t.Setenv("TMPDIR", tmpDir)
mfa := &CLIApp{Fs: afero.NewOsFs(), maxManifestSize: 64 << 10}
fetch := mfa.fetchCommand()
fetch.Action = mfa.fetchManifestOperation
check := mfa.checkCommand()
check.Action = mfa.checkManifestOperation
for _, cmd := range []*urfcli.Command{fetch, check} {
// Both operations log to the process-global logger.
err := runLocked(func() error {
return cmd.Run(context.Background(),
[]string{cmd.Name, server.URL + "/index.mf"})
})
require.ErrorIs(t, err, errManifestTooLarge, cmd.Name)
require.ErrorContains(t, err,
"maximum allowed size of 65536 bytes", cmd.Name)
}
leftover, err := os.ReadDir(tmpDir)
require.NoError(t, err)
assert.Empty(t, leftover)
}
//nolint:paralleltest // changes the process-global working directory
func TestFetchProgress(t *testing.T) {
// Create source filesystem with a larger test file
@@ -1187,10 +1122,8 @@ func TestFetchIntoDest(t *testing.T) {
// TestFetchRequireSignature runs fetch with --require-signature. A
// manifest that is unsigned, or signed by another key, must stop fetch
// with check's message before it downloads or writes anything; the
// required key lets it through. A manifest signed by another key whose
// embedded public key block also holds the required key must stop fetch
// too. The signed cases need gpg and are skipped without it, as the other
// signing tests are.
// required key lets it through. The signed cases need gpg and are skipped
// without it, as the other signing tests are.
//
//nolint:paralleltest // signedManifest calls t.Setenv, which bars t.Parallel
func TestFetchRequireSignature(t *testing.T) {
@@ -1205,7 +1138,9 @@ func TestFetchRequireSignature(t *testing.T) {
t.Run("signed", func(t *testing.T) {
manifest := signedManifest(t, files)
signer := string(signedChecker(t, manifest).Signer())
signer, err := signedChecker(t, manifest).
ExtractEmbeddedSigningKeyFP(context.Background())
require.NoError(t, err)
assertFetchRefused(t, manifest, files,
"embedded signing key fingerprint "+signer+" does not match required "+msgFpB,
@@ -1223,15 +1158,6 @@ func TestFetchRequireSignature(t *testing.T) {
require.Equal(t, 0, runCLI(opts), testStderr(t, opts))
assert.Equal(t, files[testFileTxt], filesUnder(t, dest)[testFileTxt])
})
t.Run("signed by another key embedded after the required one", func(t *testing.T) {
manifest, required := manifestSignedByAnotherKey(t, files)
assertFetchRefused(t, manifest, files,
"failed to parse manifest: signature verification failed: "+
"embedded public key block must hold exactly one key, found 2",
"--"+flagRequireSignature, required)
})
}
// TestFetchRefusesListedManifestName fetches manifests that list, at the
@@ -1530,7 +1456,7 @@ func manifestWithMode(t *testing.T, path string, content []byte, mode uint32) []
hash, err := multihash.Encode(digest[:], multihash.SHA2_256)
require.NoError(t, err)
id := uuid.NewV4()
id := uuid.New()
inner, err := proto.Marshal(&mfer.MFFile{
Version: mfer.MFFile_VERSION_ONE,
internal/cli/manifest_loader.go
-4
View File
@@ -23,10 +23,6 @@ const manifestFetchTimeout = 30 * time.Second
// its message.
var errHTTPStatus = errors.New("HTTP")
// errManifestTooLarge indicates a manifest download that passed
// CLIApp.maxManifestSize.
var errManifestTooLarge = errors.New("manifest exceeds maximum allowed size")
// 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://")
internal/cli/mfer.go
-4
View File
@@ -59,10 +59,6 @@ type CLIApp struct {
exitCode int
app *cli.Command
// maxManifestSize is the most of a manifest that fetch, and check
// given a URL, download: mfer.MaxManifestSize, which tests lower.
maxManifestSize int64
Stdin io.Reader // Standard input stream
Stdout io.Writer // Standard output stream for normal output
Stderr io.Writer // Standard error stream for diagnostics
internal/cli/testdata/seeded.mf
Vendored
BIN
View File
Binary file not shown.
mfer/builder.go
+1 -1
View File
@@ -64,7 +64,7 @@ func ValidatePath(p string) error {
return fmt.Errorf("path %q %w", p, errPathAbsolute)
}
for seg := range strings.SplitSeq(p, "/") {
for _, seg := range strings.Split(p, "/") {
if seg == "" {
return fmt.Errorf("path %q %w", p, errPathEmptySegment)
}
mfer/checker.go
+13 -7
View File
@@ -15,6 +15,7 @@ import (
)
var (
errNoSigningPubKey = errors.New("manifest has no signing public key")
errManifestPathEmpty = errors.New("manifest path cannot be empty")
errBasePathEmpty = errors.New("base path cannot be empty")
)
@@ -172,14 +173,8 @@ func (c *Checker) IsSigned() bool {
return len(c.signature) > 0
}
// Signer returns the fingerprint of the key that made the manifest's
// signature, which loading the manifest checked, or nil if the manifest is
// not signed.
// Signer returns the signer fingerprint if the manifest is signed, nil otherwise.
func (c *Checker) Signer() []byte {
if !c.IsSigned() {
return nil
}
return c.signer
}
@@ -189,6 +184,17 @@ func (c *Checker) SigningPubKey() []byte {
return c.signingPubKey
}
// 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(ctx context.Context) (string, error) {
if len(c.signingPubKey) == 0 {
return "", errNoSigningPubKey
}
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.
mfer/constants.go
+1 -8
View File
@@ -8,17 +8,10 @@ const (
ReleaseDate = "2025-12-17"
// MaxDecompressedSize is the maximum allowed size of decompressed manifest
// data (256 MiB). This prevents decompression bombs from consuming excessive
// data (256 MB). This prevents decompression bombs from consuming excessive
// memory.
MaxDecompressedSize int64 = 256 * 1024 * 1024
// MaxManifestSize is the largest manifest file mfer reads (258 MiB).
// zstd's worst case grows data it cannot compress by 1/256, so an inner
// message of MaxDecompressedSize compresses to at most 257 MiB; the
// last MiB is room for the signature, the signing key and the other
// outer fields.
MaxManifestSize = MaxDecompressedSize + MaxDecompressedSize/256 + 1<<20
// zstdWindowSize is the zstd window zstd.SpeedBestCompression gives mfer's writer.
zstdWindowSize = 8 << 20
mfer/deserialize.go
+13 -38
View File
@@ -7,8 +7,8 @@ import (
"errors"
"fmt"
"io"
"strings"
"github.com/google/uuid"
"github.com/klauspost/compress/zstd"
"github.com/spf13/afero"
"google.golang.org/protobuf/encoding/protowire"
@@ -19,27 +19,29 @@ import (
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")
errManifestTooLarge = errors.New("manifest 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")
errDecodedTooLarge = errors.New(
"manifest would take too much memory to decode")
errSignerNotSigningKey = errors.New(
"signer is not the fingerprint of the key that made the signature")
)
// validateUUID checks that the byte slice is the 16 bytes of a binary UUID.
// Any 16 bytes are one, so the length is all there is to check.
// validateUUID checks that the byte slice is a valid UUID (16 bytes, parseable).
func validateUUID(data []byte) error {
if len(data) != uuidLength {
return errInvalidUUIDLength
}
// Try to parse as UUID to validate format
_, err := uuid.FromBytes(data)
if err != nil {
return errInvalidUUIDFormat
}
return nil
}
@@ -64,10 +66,8 @@ func (m *manifest) validateOuterHeader() error {
return nil
}
// verifyOuterIntegrity checks the hash of the compressed payload and, if a
// signature is present, verifies it against the embedded public key, which
// must be one key, and checks that the signer field is that key's
// fingerprint.
// 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()
@@ -97,7 +97,7 @@ func (m *manifest) verifyOuterIntegrity() error {
}
// Loading a manifest takes no context; gpgTimeout still bounds gpg.
signingKey, err := gpgVerify(
err = gpgVerify(
context.Background(),
[]byte(sigString),
m.pbOuter.GetSignature(),
@@ -107,11 +107,6 @@ func (m *manifest) verifyOuterIntegrity() error {
return fmt.Errorf("signature verification failed: %w", err)
}
if !strings.EqualFold(string(m.pbOuter.GetSigner()), signingKey) {
return fmt.Errorf("%w: signer %q, signing key %s",
errSignerNotSigningKey, m.pbOuter.GetSigner(), signingKey)
}
log.Infof("signature verified successfully")
return nil
@@ -278,10 +273,6 @@ func (m *manifest) deserializeInner() error {
return fmt.Errorf("deserialize: unmarshal inner: %w", err)
}
if m.pbInner.GetVersion() != MFFile_VERSION_ONE {
return errUnknownVersion
}
// Validate inner UUID
err = validateUUID(m.pbInner.GetUuid())
if err != nil {
@@ -323,14 +314,13 @@ func validateMagic(dat []byte) bool {
return bytes.Equal(got, expected)
}
// NewManifestFromReader reads a manifest from an io.Reader. It refuses a
// manifest larger than MaxManifestSize, reading at most one byte past it.
// 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 := readAtMost(input, MaxManifestSize)
dat, err := io.ReadAll(input)
if err != nil {
return nil, err
}
@@ -362,21 +352,6 @@ func NewManifestFromReader(input io.Reader) (*manifest, error) {
return m, nil
}
// readAtMost reads all of input, or refuses it with errManifestTooLarge
// once it passes maxSize bytes, after reading one byte past maxSize.
func readAtMost(input io.Reader, maxSize int64) ([]byte, error) {
dat, err := io.ReadAll(io.LimitReader(input, maxSize+1))
if err != nil {
return nil, err
}
if int64(len(dat)) > maxSize {
return nil, fmt.Errorf("%w of %d bytes", errManifestTooLarge, maxSize)
}
return dat, nil
}
// ManifestFromFileOptions configures NewManifestFromFile.
type ManifestFromFileOptions struct {
// Path is the manifest file to read (required).
mfer/deserialize_path_test.go
+6 -10
View File
@@ -10,8 +10,8 @@ import (
"strings"
"testing"
"time"
"uuid"
"github.com/google/uuid"
"github.com/klauspost/compress/zstd"
"github.com/multiformats/go-multihash"
"github.com/stretchr/testify/assert"
@@ -92,7 +92,7 @@ func TestDeserializeRejectsInvalidEntryPaths(t *testing.T) {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
id := uuid.NewV4()
id := uuid.New()
data := wrapInner(t, id, craftInnerBytes(id, tt.path))
_, err := NewManifestFromReader(bytes.NewReader(data))
@@ -150,10 +150,8 @@ func TestDeserializeRefusesEntriesThatDecodeTooLarge(t *testing.T) {
entry = protowire.AppendTag(entry, 303, protowire.BytesType) // MFFilePath.ctime
entry = protowire.AppendBytes(entry, nil)
id := uuid.NewV4()
inner := protowire.AppendTag(nil, 100, protowire.VarintType) // MFFile.version
inner = protowire.AppendVarint(inner, uint64(MFFile_VERSION_ONE))
inner = protowire.AppendTag(inner, 102, protowire.BytesType) // MFFile.uuid
id := uuid.New()
inner := protowire.AppendTag(nil, 102, protowire.BytesType) // MFFile.uuid
inner = protowire.AppendBytes(inner, id[:])
for range 1000 {
@@ -183,10 +181,8 @@ func TestDeserializeDropsUnknownFields(t *testing.T) {
entry = protowire.AppendString(entry, "a")
entry = append(entry, unknown...)
id := uuid.NewV4()
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
id := uuid.New()
inner := protowire.AppendTag(nil, 101, protowire.BytesType) // MFFile.files
inner = protowire.AppendBytes(inner, entry)
inner = protowire.AppendTag(inner, 102, protowire.BytesType) // MFFile.uuid
inner = protowire.AppendBytes(inner, id[:])
mfer/deserialize_test.go
-54
View File
@@ -1,54 +0,0 @@
//nolint:testpackage // white-box tests exercise unexported internals
package mfer
import (
"bytes"
"testing"
"uuid"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"google.golang.org/protobuf/proto"
)
// An inner message whose version is not VERSION_ONE, whether version 0 or a
// later one, is refused with the same error as an outer message's.
func TestDeserializeRefusesUnknownInnerVersion(t *testing.T) {
t.Parallel()
for _, version := range []MFFile_Version{MFFile_VERSION_NONE, MFFile_VERSION_ONE + 1} {
t.Run(version.String(), func(t *testing.T) {
t.Parallel()
id := uuid.NewV4()
inner, err := proto.Marshal(&MFFile{Version: version, Uuid: id[:]})
require.NoError(t, err)
_, err = NewManifestFromReader(bytes.NewReader(wrapInner(t, id, inner)))
require.ErrorIs(t, err, errUnknownVersion)
})
}
}
// TestReadAtMost gives readAtMost exactly its maximum, which it must
// return whole, and twice its maximum, which it must refuse after reading
// one byte past the maximum, and no more. NewManifestFromReader reads
// through it with MaxManifestSize; the test uses 64 KiB, since reading
// MaxManifestSize under the race detector takes gigabytes of memory.
func TestReadAtMost(t *testing.T) {
t.Parallel()
const maxSize = 64 << 10
dat, err := readAtMost(bytes.NewReader(make([]byte, maxSize)), maxSize)
require.NoError(t, err)
assert.Len(t, dat, maxSize)
input := bytes.NewReader(make([]byte, 2*maxSize))
_, err = readAtMost(input, maxSize)
require.ErrorIs(t, err, errManifestTooLarge)
require.EqualError(t, err,
"manifest exceeds maximum allowed size of 65536 bytes")
assert.Equal(t, maxSize-1, input.Len(), "bytes left unread")
}
mfer/gpg.go
+84 -123
View File
@@ -41,26 +41,16 @@ const (
// fields in a gpg fingerprint record (the fingerprint is field 10).
gpgFingerprintMinFields = 10
// gpgStatusPrefix starts each status line gpg writes to the file
// descriptor named by --status-fd.
gpgStatusPrefix = "[GNUPG:]"
// gpg option names used from more than one call site.
gpgOptArmor = "--armor"
gpgOptHomedir = "--homedir"
gpgOptStatusFD = "--status-fd"
gpgOptVerify = "--verify"
gpgOptArmor = "--armor"
gpgOptHomedir = "--homedir"
gpgOptVerify = "--verify"
)
var (
errGPGKeyNotFound = errors.New("gpg key not found")
errFingerprintNotFound = errors.New("fingerprint not found for key")
errSigningKeyCount = errors.New(
"embedded public key block must hold exactly one key")
errNotOneGoodSignature = errors.New(
"gpg did not report exactly one good signature")
errSigningKeyNotReported = errors.New(
"gpg did not report the key that made the signature")
errImportedFPRNotFound = errors.New("fingerprint not found in imported key")
)
// GPGKeyID represents a GPG key identifier (fingerprint or key ID).
@@ -135,7 +125,7 @@ func runGPG(
// 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.SplitSeq(colonOutput, "\n") {
for _, line := range strings.Split(colonOutput, "\n") {
fields := strings.Split(line, ":")
if len(fields) >= gpgFingerprintMinFields &&
fields[0] == gpgFingerprintField {
@@ -146,67 +136,19 @@ func parseFingerprint(colonOutput string) (string, bool) {
return "", false
}
// parseStatusLine returns the arguments of the status line for keyword in
// gpg --status-fd output, or ok=false unless there is exactly one such line
// and it has arguments.
func parseStatusLine(statusOutput, keyword string) ([]string, bool) {
var found [][]string
for line := range strings.SplitSeq(statusOutput, "\n") {
fields := strings.Fields(line)
if len(fields) > 2 && fields[0] == gpgStatusPrefix && fields[1] == keyword {
found = append(found, fields[2:])
}
}
if len(found) != 1 {
return nil, false
}
return found[0], true
}
// gpgSign creates an armored detached signature of data with the key gpg
// picks for keyID, and returns it with the fingerprint of the key that made
// it, which is a subkey's when gpg signed with a subkey.
func gpgSign(
ctx context.Context, data []byte, keyID GPGKeyID,
) ([]byte, string, error) {
tmpDir, err := os.MkdirTemp("", "mfer-gpg-sign-*")
if err != nil {
return nil, "", fmt.Errorf("failed to create temp dir: %w", err)
}
defer func() { _ = os.RemoveAll(tmpDir) }()
sigFile := filepath.Join(tmpDir, "signature.asc")
// The signature goes to sigFile, so --status-fd 1 can send gpg's status
// lines to stdout; its messages go to stderr.
// 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,
"--output", sigFile,
gpgOptStatusFD, "1",
"--local-user", string(keyID),
)
if err != nil {
return nil, "", fmt.Errorf("gpg sign failed: %w: %s", err, stderr.String())
return nil, fmt.Errorf("gpg sign failed: %w: %s", err, stderr.String())
}
// The last argument of SIG_CREATED is the fingerprint of the key that
// made the signature.
created, ok := parseStatusLine(stdout.String(), "SIG_CREATED")
if !ok {
return nil, "", fmt.Errorf("%w: %s", errSigningKeyNotReported, stderr.String())
}
sig, err := os.ReadFile(sigFile) //nolint:gosec // G304: inside tmpDir, made above
if err != nil {
return nil, "", fmt.Errorf("failed to read signature: %w", err)
}
return sig, created[len(created)-1], nil
return stdout.Bytes(), nil
}
// gpgExportPublicKey exports the public key for the specified key ID.
@@ -245,44 +187,12 @@ func gpgGetKeyFingerprint(ctx context.Context, keyID GPGKeyID) ([]byte, error) {
return []byte(fpr), nil
}
// gpgImportOneKey imports the public key block in pubKeyFile into the
// keyring in gpgHome. The block must hold exactly one primary key.
func gpgImportOneKey(ctx context.Context, gpgHome, pubKeyFile string) error {
// --status-fd 1 sends gpg's status lines to stdout, which importing
// otherwise leaves empty; its messages go to stderr.
importStdout, importStderr, err := runGPG(ctx, nil,
gpgArgs([]string{gpgOptHomedir, gpgHome, gpgOptStatusFD, "1", "--import"},
pubKeyFile)...,
)
if err != nil {
return fmt.Errorf(
"failed to import public key: %w: %s", err, importStderr.String(),
)
}
// The first argument of IMPORT_RES counts the primary keys gpg read
// from the block, those it then skipped (one with no user ID, for
// example) included.
result, ok := parseStatusLine(importStdout.String(), "IMPORT_RES")
if !ok {
return fmt.Errorf("%w, gpg reported no count", errSigningKeyCount)
}
if result[0] != "1" {
return fmt.Errorf("%w, found %s", errSigningKeyCount, result[0])
}
return nil
}
// gpgVerify verifies a detached signature against data using the provided
// public key, imported into a temporary keyring, and returns the
// fingerprint of the primary key that made the signature. The public key
// must hold exactly one primary key, so that a good signature can come
// from no other key.
func gpgVerify(ctx context.Context, data, signature, pubKey []byte) (string, error) {
// 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(ctx context.Context, pubKey []byte) (string, error) {
// Create temporary directory for GPG operations
tmpDir, err := os.MkdirTemp("", "mfer-gpg-verify-*")
tmpDir, err := os.MkdirTemp("", "mfer-gpg-fingerprint-*")
if err != nil {
return "", fmt.Errorf("failed to create temp dir: %w", err)
}
@@ -303,12 +213,67 @@ func gpgVerify(ctx context.Context, data, signature, pubKey []byte) (string, err
return "", fmt.Errorf("failed to write public key: %w", err)
}
// Import the public key into the temporary keyring
_, 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(),
)
}
// List keys to get fingerprint
listStdout, listStderr, err := runGPG(ctx, nil,
"--homedir", tmpDir,
"--with-colons",
"--fingerprint",
)
if err != nil {
return "", fmt.Errorf(
"failed to list keys: %w: %s", err, listStderr.String(),
)
}
fpr, ok := parseFingerprint(listStdout.String())
if !ok {
return "", errImportedFPRNotFound
}
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(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
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")
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")
err = os.WriteFile(sigFile, signature, privateFilePerms)
if err != nil {
return "", fmt.Errorf("failed to write signature: %w", err)
return fmt.Errorf("failed to write signature: %w", err)
}
// Write data to temp file
@@ -316,33 +281,29 @@ func gpgVerify(ctx context.Context, data, signature, pubKey []byte) (string, err
err = os.WriteFile(dataFile, data, privateFilePerms)
if err != nil {
return "", fmt.Errorf("failed to write data: %w", err)
return fmt.Errorf("failed to write data: %w", err)
}
err = gpgImportOneKey(ctx, tmpDir, pubKeyFile)
// Import the public key into the temporary keyring
_, importStderr, err := runGPG(ctx, nil,
gpgArgs([]string{gpgOptHomedir, tmpDir, "--import"}, pubKeyFile)...,
)
if err != nil {
return "", err
return fmt.Errorf(
"failed to import public key: %w: %s", err, importStderr.String(),
)
}
// --status-fd 1 sends gpg's status lines to stdout, which verifying a
// detached signature otherwise leaves empty; its messages go to stderr.
verifyStdout, verifyStderr, err := runGPG(ctx, nil,
gpgArgs([]string{gpgOptHomedir, tmpDir, gpgOptStatusFD, "1", gpgOptVerify},
// Verify the signature
_, verifyStderr, err := runGPG(ctx, nil,
gpgArgs([]string{gpgOptHomedir, tmpDir, gpgOptVerify},
sigFile, dataFile)...,
)
if err != nil {
return "", fmt.Errorf(
return fmt.Errorf(
"signature verification failed: %w: %s", err, verifyStderr.String(),
)
}
// gpg writes a VALIDSIG line for each good signature. Its first
// argument is the fingerprint of the key that made the signature,
// which may be a subkey; its last is that of the primary key.
valid, ok := parseStatusLine(verifyStdout.String(), "VALIDSIG")
if !ok {
return "", errNotOneGoodSignature
}
return valid[len(valid)-1], nil
return nil
}
mfer/gpg_test.go
+37 -226
View File
@@ -8,7 +8,6 @@ import (
"os"
"os/exec"
"path/filepath"
"slices"
"strconv"
"strings"
"syscall"
@@ -18,7 +17,6 @@ import (
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"google.golang.org/protobuf/proto"
)
// testGPGEnv sets up a temporary GPG home directory with a test key.
@@ -37,18 +35,39 @@ func testGPGEnv(t *testing.T) (GPGKeyID, string) {
// Create temporary GPG home directory (0700 by default)
gpgHome := t.TempDir()
genTestKey(t, gpgHome, testKeyParams)
// Generate a test key with no passphrase
keyParams := `%no-protection
Key-Type: RSA
Key-Length: 2048
Name-Real: MFER Test Key
Name-Email: test@mfer.test
Expire-Date: 0
%commit
`
paramsFile := filepath.Join(gpgHome, "key-params")
require.NoError(t, os.WriteFile(paramsFile, []byte(keyParams), 0o600))
ctx, cancel := context.WithTimeout(context.Background(), gpgTimeout)
defer cancel()
// Get the key fingerprint
//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 {
t.Skipf("failed to generate test GPG key: %v: %s", err, output)
}
// Get the key fingerprint
cmd = exec.CommandContext(ctx, "gpg",
"--list-keys", "--with-colons", "test@mfer.test")
cmd.Env = append(os.Environ(), "GNUPGHOME="+gpgHome)
output, err := cmd.Output()
output, err = cmd.Output()
if err != nil {
t.Fatalf("failed to list test key: %v", err)
}
@@ -56,7 +75,7 @@ func testGPGEnv(t *testing.T) (GPGKeyID, string) {
// Parse fingerprint from output
var keyID string
for line := range strings.SplitSeq(string(output), "\n") {
for _, line := range strings.Split(string(output), "\n") {
fields := strings.Split(line, ":")
if len(fields) >= gpgFingerprintMinFields &&
fields[0] == gpgFingerprintField {
@@ -73,79 +92,13 @@ func testGPGEnv(t *testing.T) (GPGKeyID, string) {
return GPGKeyID(keyID), gpgHome
}
// testKeyParams are the gpg key generation parameters of an RSA key that
// signs and does not expire.
const testKeyParams = "Key-Type: RSA\nKey-Length: 2048\nExpire-Date: 0\n"
// genTestKey generates a key with no passphrase for
// "MFER Test Key <test@mfer.test>" from the gpg key generation parameters
// keyParams in gpgHome, which may already hold one.
func genTestKey(t *testing.T, gpgHome, keyParams string) {
t.Helper()
params := "%no-protection\n" + keyParams +
"Name-Real: MFER Test Key\nName-Email: test@mfer.test\n%commit\n"
paramsFile := filepath.Join(gpgHome, "key-params")
require.NoError(t, os.WriteFile(paramsFile, []byte(params), 0o600))
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 {
t.Skipf("failed to generate test GPG key: %v: %s", err, output)
}
}
// signedTestManifest returns a manifest of one file signed with keyID.
func signedTestManifest(t *testing.T, keyID GPGKeyID) []byte {
t.Helper()
b := NewBuilder()
b.SetSigningOptions(&SigningOptions{KeyID: keyID})
content := []byte("signed file content")
_, err := b.AddFile("test.txt", FileSize(len(content)), ModTime{}, 0,
bytes.NewReader(content), nil)
require.NoError(t, err)
var buf bytes.Buffer
require.NoError(t, b.Build(context.Background(), &buf))
return buf.Bytes()
}
// rewriteOuter returns manifest with its outer message changed by edit.
// A signature stays good as long as edit leaves the UUID and hash alone.
func rewriteOuter(t *testing.T, manifest []byte, edit func(*MFFileOuter)) []byte {
t.Helper()
outer := new(MFFileOuter)
require.NoError(t, proto.Unmarshal(manifest[len(MAGIC):], outer))
edit(outer)
data, err := proto.Marshal(outer)
require.NoError(t, err)
return append([]byte(MAGIC), data...)
}
func TestGPGSign(t *testing.T) {
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data to sign")
sig, signingKey, err := gpgSign(context.Background(), data, keyID)
sig, err := gpgSign(context.Background(), data, keyID)
require.NoError(t, err)
assert.Equal(t, string(keyID), signingKey)
assert.NotEmpty(t, sig)
assert.Contains(t, string(sig), "-----BEGIN PGP SIGNATURE-----")
assert.Contains(t, string(sig), "-----END PGP SIGNATURE-----")
@@ -210,18 +163,15 @@ func TestGPGOptionLikeKeyIDIsNotAnOption(t *testing.T) {
assert.NotContains(t, string(fpr), "gpg (GnuPG)")
}
// TestGPGSignInvalidKey signs with a key that has no secret key in the
// keyring. The error must hold gpg's messages and none of its status lines.
func TestGPGSignInvalidKey(t *testing.T) {
// Set up test environment (we need GNUPGHOME set)
_, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data")
_, _, err := gpgSign(context.Background(), data,
_, err := gpgSign(context.Background(), data,
GPGKeyID("NONEXISTENT_KEY_ID_12345"))
require.Error(t, err)
assert.NotContains(t, err.Error(), gpgStatusPrefix)
assert.Error(t, err)
}
func TestBuilderWithSigning(t *testing.T) {
@@ -309,16 +259,15 @@ func TestGPGVerify(t *testing.T) {
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data to sign and verify")
sig, _, err := gpgSign(context.Background(), data, keyID)
sig, err := gpgSign(context.Background(), data, keyID)
require.NoError(t, err)
pubKey, err := gpgExportPublicKey(context.Background(), keyID)
require.NoError(t, err)
// Verify the signature; it names the key that made it
signingKey, err := gpgVerify(context.Background(), data, sig, pubKey)
// Verify the signature
err = gpgVerify(context.Background(), data, sig, pubKey)
require.NoError(t, err)
assert.Equal(t, string(keyID), signingKey)
}
func TestGPGVerifyInvalidSignature(t *testing.T) {
@@ -326,7 +275,7 @@ func TestGPGVerifyInvalidSignature(t *testing.T) {
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data to sign")
sig, _, err := gpgSign(context.Background(), data, keyID)
sig, err := gpgSign(context.Background(), data, keyID)
require.NoError(t, err)
pubKey, err := gpgExportPublicKey(context.Background(), keyID)
@@ -334,7 +283,7 @@ func TestGPGVerifyInvalidSignature(t *testing.T) {
// Try to verify with different data - should fail
wrongData := []byte("different data")
_, err = gpgVerify(context.Background(), wrongData, sig, pubKey)
err = gpgVerify(context.Background(), wrongData, sig, pubKey)
assert.Error(t, err)
}
@@ -343,12 +292,12 @@ func TestGPGVerifyBadPublicKey(t *testing.T) {
t.Setenv("GNUPGHOME", gpgHome)
data := []byte("test data")
sig, _, err := gpgSign(context.Background(), 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(context.Background(), data, sig, badPubKey)
err = gpgVerify(context.Background(), data, sig, badPubKey)
assert.Error(t, err)
}
@@ -419,144 +368,6 @@ func TestManifestTamperedSignatureFails(t *testing.T) {
assert.Error(t, err)
}
// TestManifestRefusesSecondEmbeddedKey loads a manifest whose embedded
// public key block holds another key before the key that signed it.
// Loading must refuse it, although the signature is good and the signer
// field names the key that made it.
func TestManifestRefusesSecondEmbeddedKey(t *testing.T) {
otherKey, otherHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", otherHome)
otherPubKey, err := gpgExportPublicKey(context.Background(), otherKey)
require.NoError(t, err)
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
manifest := rewriteOuter(t, signedTestManifest(t, keyID),
func(outer *MFFileOuter) {
outer.SigningPubKey = slices.Concat(otherPubKey, outer.GetSigningPubKey())
})
_, err = NewManifestFromReader(bytes.NewReader(manifest))
require.ErrorIs(t, err, errSigningKeyCount)
}
// TestManifestRefusesSecondEmbeddedKeyWithoutUserID loads a manifest whose
// embedded public key block holds, before the key that signed it, another
// key with its user ID removed, which gpg skips on import. Loading must
// refuse it: the block holds two keys.
func TestManifestRefusesSecondEmbeddedKeyWithoutUserID(t *testing.T) {
otherKey, otherHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", otherHome)
// Keeping only the user IDs that match "nobody" exports none.
otherPubKey, _, err := runGPG(context.Background(), nil,
gpgArgs([]string{
"--export", gpgOptArmor, "--export-filter", "keep-uid=uid = nobody",
}, string(otherKey))...)
require.NoError(t, err)
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
manifest := rewriteOuter(t, signedTestManifest(t, keyID),
func(outer *MFFileOuter) {
outer.SigningPubKey = slices.Concat(
otherPubKey.Bytes(), outer.GetSigningPubKey())
})
_, err = NewManifestFromReader(bytes.NewReader(manifest))
require.ErrorIs(t, err, errSigningKeyCount)
}
// TestManifestRefusesTwoSignatures loads a manifest whose signature field
// holds its good signature twice. Loading must refuse it.
func TestManifestRefusesTwoSignatures(t *testing.T) {
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
manifest := rewriteOuter(t, signedTestManifest(t, keyID),
func(outer *MFFileOuter) {
outer.Signature = slices.Concat(
outer.GetSignature(), outer.GetSignature())
})
_, err := NewManifestFromReader(bytes.NewReader(manifest))
require.ErrorIs(t, err, errNotOneGoodSignature)
}
// TestManifestSignedWithSubkey signs with a key whose primary key can only
// certify, so gpg signs with its signing subkey. The manifest must load,
// with the primary key's fingerprint as signer.
func TestManifestSignedWithSubkey(t *testing.T) {
gpgHome := t.TempDir()
t.Setenv("GNUPGHOME", gpgHome)
genTestKey(t, gpgHome, "Key-Type: RSA\nKey-Length: 2048\nKey-Usage: cert\n"+
"Subkey-Type: RSA\nSubkey-Length: 2048\nSubkey-Usage: sign\n"+
"Expire-Date: 0\n")
primary, err := gpgGetKeyFingerprint(context.Background(), "test@mfer.test")
require.NoError(t, err)
m, err := NewManifestFromReader(bytes.NewReader(
signedTestManifest(t, GPGKeyID("test@mfer.test"))))
require.NoError(t, err)
assert.Equal(t, primary, m.pbOuter.GetSigner())
}
// TestManifestRefusesSignerOtherThanSigningKey loads a manifest whose
// signer field names a key other than the one that made the signature.
func TestManifestRefusesSignerOtherThanSigningKey(t *testing.T) {
keyID, gpgHome := testGPGEnv(t)
t.Setenv("GNUPGHOME", gpgHome)
manifest := rewriteOuter(t, signedTestManifest(t, keyID),
func(outer *MFFileOuter) {
outer.Signer = []byte(strings.Repeat("A", len(keyID)))
})
_, err := NewManifestFromReader(bytes.NewReader(manifest))
require.ErrorIs(t, err, errSignerNotSigningKey)
}
// TestBuilderSigningKeyIDMatchingTwoKeys signs with a key ID that two keys
// in the keyring match. The manifest must embed and name only the key that
// signed it, or loading refuses it.
func TestBuilderSigningKeyIDMatchingTwoKeys(t *testing.T) {
_, gpgHome := testGPGEnv(t)
genTestKey(t, gpgHome, testKeyParams)
t.Setenv("GNUPGHOME", gpgHome)
manifest := signedTestManifest(t, GPGKeyID("test@mfer.test"))
_, err := NewManifestFromReader(bytes.NewReader(manifest))
require.NoError(t, err)
}
// TestBuilderSigningUserIDWithExpiredFirstKey signs with a user ID whose
// first key in the keyring has expired. gpg signs with the other key for
// that user ID, and the manifest must name and embed that key.
func TestBuilderSigningUserIDWithExpiredFirstKey(t *testing.T) {
gpgHome := t.TempDir()
t.Setenv("GNUPGHOME", gpgHome)
// Made in 2020 and valid for one day.
genTestKey(t, gpgHome, "Key-Type: RSA\nKey-Length: 2048\n"+
"Creation-Date: 20200101T000000\nExpire-Date: 1d\n")
expired, err := gpgGetKeyFingerprint(context.Background(), "test@mfer.test")
require.NoError(t, err)
genTestKey(t, gpgHome, testKeyParams)
m, err := NewManifestFromReader(bytes.NewReader(
signedTestManifest(t, GPGKeyID("test@mfer.test"))))
require.NoError(t, err)
assert.NotEqual(t, expired, m.pbOuter.GetSigner())
}
func TestBuilderWithoutSigning(t *testing.T) {
t.Parallel()
@@ -610,7 +421,7 @@ func TestGPGTimeoutKillsGPG(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
_, _, err := gpgSign(ctx, []byte("data"), GPGKeyID("any"))
_, err := gpgSign(ctx, []byte("data"), GPGKeyID("any"))
require.ErrorIs(t, err, context.DeadlineExceeded)
assert.Contains(t, err.Error(), "gpg sign failed: gpg timed out")
}
@@ -635,7 +446,7 @@ func TestGPGCancelWhenChildHoldsOutput(t *testing.T) {
signErr := make(chan error, 1)
go func() {
_, _, err := gpgSign(ctx, []byte("data"), GPGKeyID("any"))
_, err := gpgSign(ctx, []byte("data"), GPGKeyID("any"))
signErr <- err
}()
mfer/mf.pb.go
+4 -4
View File
@@ -1,6 +1,6 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.36.12
// protoc-gen-go v1.36.11
// protoc v6.33.4
// source: mf.proto
@@ -223,11 +223,11 @@ type MFFileOuter struct {
// uuid must match the uuid in the inner message
Uuid []byte `protobuf:"bytes,105,opt,name=uuid,proto3" json:"uuid,omitempty"`
InnerMessage []byte `protobuf:"bytes,199,opt,name=innerMessage,proto3" json:"innerMessage,omitempty"`
//detached signature, ascii or binary
// detached signature, ascii or binary
Signature []byte `protobuf:"bytes,201,opt,name=signature,proto3,oneof" json:"signature,omitempty"`
//full GPG key id
// full GPG key id
Signer []byte `protobuf:"bytes,202,opt,name=signer,proto3,oneof" json:"signer,omitempty"`
//full GPG signing public key, ascii or binary
// full GPG signing public key, ascii or binary
SigningPubKey []byte `protobuf:"bytes,203,opt,name=signingPubKey,proto3,oneof" json:"signingPubKey,omitempty"`
unknownFields protoimpl.UnknownFields
sizeCache protoimpl.SizeCache
mfer/serialize.go
+6 -10
View File
@@ -8,8 +8,8 @@ import (
"fmt"
"math"
"time"
"uuid"
"github.com/google/uuid"
"github.com/klauspost/compress/zstd"
"google.golang.org/protobuf/proto"
)
@@ -88,7 +88,7 @@ func (m *manifest) generateOuter(ctx context.Context) error {
if len(m.fixedUUID) == uuidLength {
copy(manifestUUID[:], m.fixedUUID)
} else {
manifestUUID = uuid.NewV4()
manifestUUID = uuid.New()
}
m.pbInner.Uuid = manifestUUID[:]
@@ -143,32 +143,28 @@ func (m *manifest) generateOuter(ctx context.Context) error {
}
// signOuter signs the outer message with the configured GPG key and
// embeds the signature, signer fingerprint, and public key. The signer
// and public key are those of the key gpg reports it signed with, so that
// a key ID matching more than one key cannot name or embed another key.
// 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, signingKey, err := gpgSign(ctx, []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
// Listing the signing key, a subkey's included, puts its primary key's
// fingerprint first.
fingerprint, err := gpgGetKeyFingerprint(ctx, GPGKeyID(signingKey))
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(ctx, GPGKeyID(fingerprint))
pubKey, err := gpgExportPublicKey(ctx, m.signingOptions.KeyID)
if err != nil {
return fmt.Errorf("failed to export public key: %w", err)
}
script/bootstrap
+5 -6
View File
@@ -22,15 +22,14 @@ YARN_VERSION="1.22.22"
# protoc v33.4, 2026-10-04, for script/generate. The sha256 of each
# platform's release archive is in ensure_protoc.
PROTOC_VERSION="33.4"
# gofumpt v0.12.0 for script/gofumpt, 2026-10-04, and protoc-gen-go
# v1.36.12 for script/generate, 2026-10-06: each is installed into bin/
# with `go install`, pinned to the commit its release tag names. Those two
# gofumpt v0.12.0 for script/gofumpt and protoc-gen-go v1.36.11 for
# script/generate, 2026-10-04: each is installed into bin/ with
# `go install`, pinned to the commit its release tag names. Those two
# scripts refuse any other version, so a new pin is changed there too.
# protoc-gen-go stays at the google.golang.org/protobuf version in go.mod.
GOFUMPT_VERSION="v0.12.0"
GOFUMPT_COMMIT="3e07e7e70ac93761d8e79ca0083a19e3d59f753d"
PROTOC_GEN_GO_VERSION="v1.36.12"
PROTOC_GEN_GO_COMMIT="cdd4c5f7406e82462949c7a65defa9f3029c162d"
PROTOC_GEN_GO_VERSION="v1.36.11"
PROTOC_GEN_GO_COMMIT="96a179180f0ad6bba9b1e7b6e38d0affb0168e9a"
PKGMGR=""
SUDO=""
script/generate
+1 -1
View File
@@ -15,7 +15,7 @@ ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
# in the mf.pb.go header.
PROTOC_VERSION="33.4"
PROTOC="$ROOT/bin/protoc/bin/protoc"
PROTOC_GEN_GO_VERSION="v1.36.12"
PROTOC_GEN_GO_VERSION="v1.36.11"
PROTOC_GEN_GO="$ROOT/bin/protoc-gen-go"
# sha256 <file>: print "<hash> <file>", with sha256sum, or with shasum
script/vulncheck
-22
View File
@@ -1,22 +0,0 @@
#!/bin/sh
# script/vulncheck: report known vulnerabilities in the code mfer calls,
# with govulncheck, which reads the Go vulnerability database online.
# It runs as the vulncheck stage of the Dockerfile, on the same Go as the
# test phase, and this builds that stage alone, on the same terms as
# script/lint and script/test.
#
# script/check does not run it: the gate's result depends on this tree
# alone, and this one changes whenever a new advisory is published.
set -eu
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
main() {
cd "$ROOT"
docker build --no-cache \
--target vulncheck \
-t "$("$SCRIPT_DIR/projectname")-vulncheck" .
}
main "$@"