Fix .jpeg extension mismatch when mime option is jpeg - #320
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Closes #160 |
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Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review. 📝 WalkthroughWalkthroughImage MIME values are now normalized before asset output and cache generation. JPEG uses the ChangesAsset image output handling
Priority: ⬇️ Low Estimated code review effort: 2 (Simple) | ~5 minutes Change: Bug fix Merge Risk: ⚪ Minimal · up to JPEG assets now consistently use 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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Independent review (cold-start, diff + full modules/Assets/Helper/Asset.php at 0a28096 read end-to-end against #160).
Blocking: the change does not actually fix the reported issue. The filename in the bug report is not produced by the $ext used on line 239 — it is produced earlier, in image():
// modules/Assets/Helper/Asset.php:91
$hash = $mime ? \md5(\json_encode($options))."_{$quality}_{$mode}.{$mime}" : null;That $hash is threaded through imageByAsset() (L120/L123/L151) into imageByPath(), where L239 is:
$hash = $hash ?? \md5(\json_encode($options))."_{$quality}_{$mode}.{$ext}";So the .{$ext} suffix is only ever used when $hash is null — i.e. only when no mime option was passed. In the exact scenario from #160 ('mime' => 'jpeg'), $hash is non-null and already ends in .jpeg, taken verbatim from the raw un-normalized option. The new $ext = ($mime === 'jpeg') ? 'jpg' : $mime; on L227 therefore never influences the output filename or the cache key for any request that sets mime; the generated file still lands at ..._100_thumbnail.jpeg. The two conditions ("mime is set" and "$ext drives the filename") are mutually exclusive.
A fix for #160 has to normalize at L91 (or defer hash construction until after the L223-231 normalization block). Note L91 also has a related latent problem: it interpolates the raw option, so 'mime' => 'image/jpeg' yields a hash containing a / (..._thumbnail.image/jpeg), i.e. an unintended sub-path under $storage — same root cause, raw value used before normalization.
On the data-URI claim in the PR description — this part is correct. Pre-change, $ext and $mime were both jpeg at L226-227, so data:image/{$ext} emitted the valid data:image/jpeg. Setting $ext = 'jpg' genuinely would have started emitting data:image/jpg, which is not a registered subtype, so guarding it with $dataMime = $mime ?: "image/{$ext}" is the right call and the fallback is sound for the mime-override cases (jpeg/jpg -> image/jpeg, others pass through). Two caveats: (a) that regression only exists because of this PR, so the net effect at L300 is zero, not a fix; (b) the ?: fallback still emits the invalid data:image/jpg when no mime override is passed and the source file is foo.jpg — pre-existing, untouched here, but if you are already in this line it is a one-token fix.
Also note the cache-hit fast path at L100 returns "data:image/{$mime}" using the raw option, so 'mime' => 'jpg' returns data:image/jpg and 'mime' => 'image/jpeg' returns data:image/image/jpeg. That path is reached whenever the thumbnail already exists, and it is left unfixed — the same L91-vs-L223 normalization gap.
Cache orphaning: not a concern. Because the changed $ext is unreachable for filename purposes whenever mime is set, and unaffected when it is not, no previously cached .jpeg file changes name. (Once L91 is fixed, existing .jpeg cache entries will be orphaned — one-time regeneration plus stale files on disk. Worth a line in the PR body then, not blocking.)
On the stated verification method. The extracted-script approach is what hid this. The script reproduced L223-231 plus a synthesized md5(...)."_{$quality}_{$mode}.{$ext}" filename, but the real path never reaches that expression under the very input being tested, because image() L91 pre-empts it. The extraction diverged from the actual call chain precisely at the boundary that matters, so "cache filename ends in .jpg" passed in the harness while the real code still produces .jpeg. The minimum credible check here is end-to-end: call $app->helper('asset')->image(['src' => ..., 'mime' => 'jpeg', 'width' => 1280, 'height' => 0], true) and assert on the returned path, or at minimum ls the storage dir. Any future harness should start at the public entry point (image()), not at the middle of a protected helper.
The one non-blocking side effect that is real: L250's vips temp file becomes .jpg instead of .jpeg, which is harmless (both select the JPEG encoder).
Summary: $mime / $ext separation on L227-228 is conceptually the right shape and is internally consistent, but it is applied at a point in the flow that the bug never reaches. Needs the L91 normalization to actually close #160. Not approving — no merge rights, and this should go back for a fix.
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Inline comments:
In `@modules/Assets/Helper/Asset.php`:
- Around line 227-228: Update Asset::image() so MIME normalization occurs before
constructing the cache hash, using the normalized jpg extension for jpeg inputs.
Ensure the same normalized extension drives both cache lookup and thumbnail
output generation, rather than preserving a hash built from the raw mime value.
- Around line 300-301: Update the MIME fallback in the thumbnail Base64 response
so both jpg and jpeg extensions resolve to image/jpeg when no explicit mime is
provided, while preserving the existing $mime override and encoding flow.
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modules/Assets/Helper/Asset.php
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| if ($mime && \in_array($mime, ['avif', 'gif', 'jpeg', 'png', 'webp', 'bmp'])) { | ||
| $ext = $mime; | ||
| $mime = "image/{$ext}"; | ||
| $ext = ($mime === 'jpeg') ? 'jpg' : $mime; |
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Dead for the reported case. image() L91 already built $hash as md5(...)."_{$quality}_{$mode}.{$mime}" from the raw option and passed it down here, so L239 short-circuits ($hash ?? ...) and this $ext never reaches the output filename or cache key whenever mime is set — which is the only situation in which #160 occurs. With mime: 'jpeg' the thumbnail still lands at ..._thumbnail.jpeg. The normalization needs to happen before/at L91, or $hash construction needs to move after this block.
The $mime = "image/{$mime}" half is correct and preserves image/jpeg for Img::toString() — no objection there.
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Confirmed and fixed properly this time. Root cause was exactly as you described: image() built $hash from the raw $mime at what was line 91 before any normalization ran, so imageByPath()'s $ext fix at L227 never reached the hash/filename whenever a mime option was set — the only case #160 occurs in.
Fix: extracted the jpeg->jpg (and image/ prefix stripping) normalization into a shared normalizeImageMime() helper, and call it in image() before $hash is built, then reuse the same helper in imageByPath() so both paths agree. Verified end-to-end this time by bootstrapping the real Cockpit app (via bootstrap.php/Cockpit::instance()) in a docker php:8.3 container matching the repo's own Dockerfile deps (gd, zip, pdo_sqlite), calling the actual public $app->helper('asset')->image([...]) entry point against a real uploaded jpg, and asserting on the real returned storage path — not a reimplemented snippet. Confirmed the added assertion fails against the pre-fix code (produces ..._thumbnail.jpeg) and passes against the new fix (produces ..._thumbnail.jpg).
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Pushed a real fix for the blocking issue found in review: the previous patch normalized New commit (
Verification this time was end-to-end through the real call chain, not a reimplemented snippet: bootstrapped the actual Cockpit app ( |
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Checked for outstanding review feedback: all three review threads (CodeRabbit's two cache-key/mime findings and my own independent-review finding on the same root cause) already have a confirmed-fixed reply from commit |
imageByPath() used the raw mime value ('jpeg') directly as the file
extension for the generated thumbnail filename, cache hash and data
URI, producing a .jpeg file even though 'jpg' is the conventional
extension. Split the extension used for filenames/cache keys from the
actual mime type string so the output file gets a .jpg extension while
the produced image/jpeg mime type stays correct everywhere it's used
(Img::toString, data URI).
…tch (Cockpit-HQ#160) Asset::image() built the cache hash from the raw, un-normalized mime option before imageByPath()'s jpeg->jpg normalization ever ran, so the normalization never affected the output filename or cache key when a mime option was set (the exact scenario in Cockpit-HQ#160). Extract the normalization into a shared normalizeImageMime() helper and run it in image() before the hash is built, so the hash and thumbnail filename always agree. Also fixes a related bug where a raw 'image/jpeg' mime value produced a hash containing a literal '/' (stray sub-path under storage), and normalizes the base64 data-URI fallback so a plain .jpg extension maps to image/jpeg instead of the non-standard image/jpg.
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Hi @coderabbitai — just checking in on this one, it's been a while with CI green and mergeable. Anything needed from our side, or a rough idea on timing? No rush. Thanks for the review! |
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Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chain🏁 Script executed: #!/bin/bash
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The PR is open, mergeable, and not a draft. GitHub reports One item remains in GitHub: an unresolved review thread from you. The thread describes the cache-key normalization issue that commit I do not see a current review decision. Merge timing depends on the repository maintainers. No additional code change is indicated by the current PR state. You are interacting with an AI system. |
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What
imageByPath()inmodules/Assets/Helper/Asset.phpnormalizes themimeoption (e.g.image/jpeg,jpg,jpeg) and then reused that normalized value directly as$extfor the generated thumbnail filename/cache hash. Whenmimewasjpeg, the output file (and cache key) ended in.jpeginstead of the conventional.jpg.Why
Closes #160. Requester expects
.jpgas the output extension whenmime: 'jpeg'is passed toAsset::image(), matching the extension most tooling/browsers expect for JPEG files.Fix
image/...mime type:$extbecomesjpgonly when the normalized mime isjpeg;$mimestill resolves toimage/jpegand is passed unchanged toImg::toString().data:image/{$ext}— after this change that would have incorrectly produceddata:image/jpg(not a registered mime subtype). Updated it to use the already-correct$mimevalue (falling back toimage/{$ext}only when no mime override was requested), so the data URI mime type is unaffected by the extension fix.Test plan
There is no existing test suite covering
Asset::image()/imageByPath()in this repo (notests/directory), andphpisn't available for me to bootstrap the full app locally, so I verified as follows:php -l modules/Assets/Helper/Asset.php— no syntax errors (viaphp:8.3-cliDocker, matching the repo's required PHP version).php:8.3-cliwith assertions enabled, covering:mime: 'jpeg'→$extisjpg,$mimeisimage/jpeg, cache filename ends in.jpg, data URI isdata:image/jpeg;base64,...mime: 'jpg'→ same result (pre-existing jpg→jpeg mime normalization still holds)mime: 'png'→ unaffected ($extstayspng)mimeoverride → unaffected ($extpasses through the file's original extension,$mimestaysnull)I did not add a script/test file to the repo itself since there's no existing test scaffolding to plug into; happy to add one in the repo's own style if maintainers point me at a preferred location/runner.
Summary by CodeRabbit
.jpgextension.