Add cache_max_bytes to config.example.yml and the README key settings
list. TODO.md: move cache size management and eviction to Completed
Steps, promote P1 blocked networks configuration into Next Step, and
note in Status that the unbounded disk growth DoS vector is closed.
closes#52
Implements startup configuration validation per the plan on #52. Two commits, TDD: the first commit adds the enforcement tests (red — six test functions fail against the lenient behavior) plus a mechanical extraction of `newFromSmartConfig` from `config.New` so construction is testable without fx; the second commit makes them green and carries the `TODO.md` bookkeeping.
## Behavior
- **No silent fallbacks**: a config value that is SET but unparseable or invalid aborts startup with an error naming the key and value. Defaults apply only to OMITTED keys. The old `getString`/`getInt`/`getBool` helpers swallowed every conversion error and returned the default; they are now strict. Fractional ports are rejected, not truncated (smartconfig's `GetInt` would have turned `8080.5` into `8080`).
- **Unknown keys abort**: unknown top-level keys and unknown `metrics` subkeys are fatal, each named in the error (`unknown config keys: whitelist_hosts`). The `env` section stays permitted because smartconfig consumes it for environment injection.
- **Malformed config file aborts**: a config file that exists at a standard location but fails to parse was previously logged as a warning and skipped (the server would start on defaults); it is now fatal.
- **Range/sanity checks**: `port` in 1-65535; `upstream_connections_per_host` at least 1; `signing_key` required, at least 32 characters (keyless mode was never implemented; the stale "leave empty" comment in `config.example.yml` is corrected); `allowlist_hosts` entries must be bare hostnames (leading-dot suffix patterns still allowed; schemes, paths, whitespace, non-string and empty entries rejected); `state_dir` non-empty and verified creatable+writable with a probe file before the listener binds; `sentry_dsn` must be a URL with scheme and host when set; `metrics.username`/`metrics.password` must be set together.
## Verification
- `make check` green on the branch head (all tests, golangci-lint 0 issues, fmt-check clean).
- End-to-end: `./bin/pixad` with `port: banana` exits 1 printing `config key "port": value "banana" is not an integer`; with `whitelist_hosts:` it exits 1 printing `unknown config keys: whitelist_hosts`.
## Notes for review
- `getStringSlice` keeps its lenient signature because the existing tests in `config_test.go` exercise it and modifying existing tests requires explicit approval. Strictness for `allowlist_hosts` is instead enforced up front on the raw value by `validateAllowlistHostsValue`, so nothing is silently skipped; extraction then reuses the existing parser. If you prefer the helper folded into a single strict function, that requires retargeting those three tests — happy to do that as a follow-up with approval.
- `TODO.md` here is edited against current `main`; PR #50 (merge-ready) edits adjacent lines, so whichever merges second will need a trivial rebase of `TODO.md` only.
- The README Configuration section lists keys that have never existed in the code (`access_control_allow_origin`, `upstream_fetch_timeout`, `upstream_max_response_size`, `downstream_timeout`). Under this change a config using them now fails fast instead of silently doing nothing — that is the intended behavior. Implementing them is already tracked as the P2 "add all configuration options from README" item in `TODO.md`.
Co-authored-by: sneak <sneak@sneak.berlin>
Reviewed-on: #53
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>
closes#49
Records the P0 manual test pass in `TODO.md` per its Workflow section
(checked-off results into Completed Steps; cache size management and
eviction promoted to Next Step). `TODO.md` is the only changed file —
no production code changes, as the issue requires.
## Test setup
`pixad` built from `main` at `6573b9d` via `make build`, run on port
18099 with a throwaway local config (temp state dir, known
`signing_key`, `allowlist_hosts` including `s3.sneak.cloud`), driven
with curl using explicit cookie replay (session cookies are
`Secure`/`HttpOnly`/`SameSite=Strict`).
## Results — all six checks PASS
1. **Login form**: GET `/` → HTTP 200, `Pixa - Login` page with
`name="key"` password form.
2. **Wrong key error**: POST `/` with `key=wrong-key` → HTTP 200 login
page containing "Invalid signing key".
3. **Generator form**: POST `/` with the correct signing key → HTTP 303
to `/` with `Set-Cookie: pixa_session=...; HttpOnly; Secure;
SameSite=Strict`; GET `/` with that cookie → `Pixa - URL Generator`
with the `/generate` form and logout link.
4. **Encrypted URL serves image**: POST `/generate` (ttl=3600) produced
a `/v1/e/<token>/img.jpeg` URL → HTTP 200, `Content-Type:
image/jpeg`, 800x600 baseline JPEG, 61706 bytes.
5. **Expired URL → 410**: a ttl=1 URL fetched after 3 s → HTTP 410 Gone
with `{"error":"URL has expired","status":410,...}`.
6. **Logout**: GET `/logout` → HTTP 303 to `/` with `Set-Cookie:
pixa_session=; Max-Age=0`; subsequent GET `/` → login form again.
Additionally, all nine checks in `scripts/manual-test.sh` passed
against the same server instance.
## Verification
`make check` green on the branch head (all tests, golangci-lint 0
issues, fmt-check clean) — the first fully green `make check` on a
`main`-derived branch under the current linter, confirming the #47/#48
fix on merged `main`.
Note for review: the test execution was performed this session; the
adversarial re-review (independently re-running the six flows) is still
pending and should happen before merge.
Co-authored-by: sneak <sneak@sneak.berlin>
Reviewed-on: #50
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>
closes#47
Fixes the two remaining `gosec` findings on `main`, both `G124`
(http.Cookie missing or has insecure `Secure`, `HttpOnly`, or
`SameSite` attribute):
- `internal/session/session.go:84` (`CreateSession`, the login
set-cookie path)
- `internal/session/session.go:128` (`ClearSession`, the logout
delete-cookie path)
## What changed
- Both cookie-writing paths now unconditionally set `Secure: true`,
`HttpOnly: true`, and `SameSite: http.SameSiteStrictMode`.
- The `secure` field (previously wired to `!config.Debug`) and the
`sameSite` field are removed from `session.Manager`, and the dead
secure-toggle parameter is removed from `session.NewManager`, which
now takes only the signing key (reviewer-directed; the mechanical
call-shape updates in `session_test.go` leave every assertion
untouched).
- TDD per repo rules: the first commit adds
`TestSessionCookieAttributesAlwaysSecure` (failing), asserting that
every cookie emitted by the session manager carries `HttpOnly`,
`Secure`, and `SameSite` of Lax or stricter, for both write paths.
The second commit makes it pass.
- `TODO.md` updated per its Workflow section (Next Step completed,
next Future Step promoted, stale "10 open findings" Status text
corrected).
## Attribute choices and reasoning
- `Secure: true` always: the `G124` analyzer only accepts a constant
`true` store, and there is no legitimate configuration in which the
authentication cookie should be sent over plaintext HTTP. The old
behavior disabled `Secure` whenever `debug` was on. Local development
over `http://localhost` keeps working: browsers treat `localhost` as
a trustworthy origin and accept `Secure` cookies there. Any
plain-HTTP flow on a non-localhost host will no longer keep a
session, which is the point of the fix.
- `SameSite: Strict` (unchanged from current production behavior, and
stricter than the Lax minimum): the login form is a same-origin POST
to `/` followed by a same-site redirect, so `Strict` breaks nothing.
- `HttpOnly: true` (unchanged).
## Verification
`make check` (tests, golangci-lint, fmt-check) is fully green on the
branch head `cb9e14e`: all tests pass and the linter reports 0 issues,
independently confirmed by the reviewer in a fresh worktree. Commit
history: `ca15f52` (failing test) → `02ca16a` (fix + TODO.md, closes
#47) → `cb9e14e` (drop the dead `NewManager` parameter).
Co-authored-by: sneak <sneak@sneak.berlin>
Reviewed-on: #48
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>
closes#24
## QA Audit Fixes
This PR addresses issues found during the 1.0/MVP QA audit.
### Changes
1. **TODO.md: Mark AVIF encoding as done** — AVIF encoding is fully implemented via govips in `processor.go` but was still listed as a TODO item.
2. **scripts/manual-test.sh: Fix form field names** — The manual test script was using wrong field names:
- Login form: was sending `password=...`, should be `key=...` (matching the HTML form's `name="key"`)
- Generator form: was sending `source_url`, `fit_mode` — should be `url`, `fit` (matching the handler's `r.FormValue()` calls)
- This means **the manual test script never actually worked** — login always failed silently because the `key` field was empty.
### Full QA Audit Results
The comprehensive QA audit report has been posted as a comment on [issue #24](#24).
Co-authored-by: user <user@Mac.lan guest wan>
Reviewed-on: #25
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>
Uses github.com/gen2brain/webp - a CGO-free library that uses WASM via
wazero runtime for encoding. WebP decoding was already supported.
- Add gen2brain/webp dependency for encoding
- Implement WebP encoding in processor.go
- Add FormatWebP to SupportedOutputFormats
- Re-enable WebP option in generator form dropdown
- Mark WebP encoding as complete in TODO.md
- check: default target, runs fmt-check, lint, and test
- fmt-check: verifies code is properly formatted
- fmt: formats code with gofmt
- lint: runs golangci-lint
- test: runs go test
- build: builds pixad binary with version info
- clean: removes build artifacts
