Plugin Directory: only keep regular files and directories in SVN exports - #857
Plugin Directory: only keep regular files and directories in SVN exports#857obenland wants to merge 5 commits into
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…rts. `svn export` materialises `svn:special` entries as real symlinks, so an exported tree can contain entries that are not plain files or directories. The ZIP route already drops those in `Filesystem::unzip()`, and `Zip\Builder` does the same after its own export, but the import route did not — so the two routes handled an export inconsistently. Scrub inside `SVN::export()` so every caller inherits it rather than repeating it per call site, and skip symlinks in `Filesystem::list()` so nothing further down treats one as the file or directory it resolves to. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Included review availability: Your plan provides up to 8 included reviews per hour; 4 remain after this review. 📝 WalkthroughWalkthroughThe change excludes symbolic links from filesystem listings and reports SVN export cleanup failures for unsupported entries. PHPUnit coverage adds real files, directories, and symlink fixtures. ChangesSymlink handling
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The change filters non-regular entries from SVN exports and filesystem listings without any remaining actionable merge-blocking risk; it is merge-ready after normal checks and review. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Pull request overview
This PR hardens the plugin directory’s ingestion/export tooling by ensuring that plugin trees produced via svn export (and enumerated via Filesystem::list()) cannot include symlinks or other non-regular filesystem entries that downstream consumers might accidentally follow/read outside the export root.
Changes:
- After successful
svn export, scrub the export directory by deleting anything that is not a regular file or directory. - Update
Tools\Filesystem::list()to explicitly skip symlinks so callers never receive them (even when a symlink’s target would otherwise passisFile()/isDir()). - Add PHPUnit coverage validating symlink exclusion behavior, including the readme-pattern lookup used by import code paths.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| wordpress.org/public_html/wp-content/plugins/plugin-directory/tools/class-svn.php | Adds a post-export find scrub to remove non-file/non-directory entries from SVN exports. |
| wordpress.org/public_html/wp-content/plugins/plugin-directory/tools/class-filesystem.php | Filters symlinks out of directory listings to prevent callers from handling link targets. |
| wordpress.org/public_html/wp-content/plugins/plugin-directory/tests/Filesystem_Symlink_Test.php | Adds tests ensuring Filesystem::list() / list_files() never return symlinks under multiple listing modes. |
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In
`@wordpress.org/public_html/wp-content/plugins/plugin-directory/tools/class-svn.php`:
- Line 137: Update SVN::export() to capture the status from the cleanup
self::shell_exec() call and return a failed export when the find cleanup command
fails. Preserve the existing successful export flow when cleanup succeeds, and
ensure export_plugin() cannot proceed with an uncleaned destination.
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wordpress.org/public_html/wp-content/plugins/plugin-directory/tests/Filesystem_Symlink_Test.phpwordpress.org/public_html/wp-content/plugins/plugin-directory/tools/class-filesystem.phpwordpress.org/public_html/wp-content/plugins/plugin-directory/tools/class-svn.php
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`Plugin_Scan` hands the export straight to Plugin Check and `Zip\Builder` zips it, and neither goes through `Filesystem::list()` — so for those two the `find` is the only thing standing between a committed `svn:special` entry and a consumer that resolves it. Discarding its output meant a failed cleanup still returned `result => true`. A successful `find` is silent, so treat any output as a failed export. Also assert the fixture's symlinks were created: `symlink()` returning false left the tree with only real entries, which every assertion in the test passes against. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A failed write to the symlink's target leaves `readme.txt` dangling, and `isFile()` is false on a dangling link — so it would have been filtered out even without the guard the test exists to cover, and two of the four tests would have passed against unfixed code. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
`Block_Plugin_Checker::export_plugin()` reports `errors[0]['error_code']` and falls back to 'unknown error', so a cleanup failure reached the reviewer with its cause dropped. Match the shape `parse_svn_errors()` returns. `warning` is left off — no caller reads it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
…ture. PHPUnit runs `tearDown()` even when `setUp()` aborts on an assertion, and the abort leaves `$dir` empty — so the hand-rolled cleanup resolved `is_link()` and `rmdir()` against '/readme.txt', '/linked-dir' and '/real-dir'. `Filesystem::rmdir()` already no-ops on the empty string via its own `trim( $dir, '/' )` guard, and `rm -rf` removes the symlink to the second root rather than following it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The plugin directory ingests plugins by two routes, and they treat an export differently.
svn exportmaterialisessvn:specialentries as real symlinks, so an exported tree can contain entries that are not plain files or directories. The ZIP route already drops those —Filesystem::unzip()runsfind -type l -deleteright afterunzip, andZip\Builder::export_plugin()does the same after its own export. The import route does not, soImport::export_and_parse_plugin()works on a tree the other route would have cleaned up.That matters because everything downstream stats with functions that resolve the link rather than the entry:
SplFileInfo::isFile(),filesize(),file_get_contents(). A non-regular entry is therefore picked up and read as whatever it resolves to.Changes
Tools\SVN::export()— drop anything that is not a regular file or a directory after a successful export. Doing it here rather than at the call sites means all seven inherit it (Import::export_and_parse_plugin()'s two exports,Zip\Builder's two,Block_Plugin_Checker,Plugin_Scan,i18n\Code_Import) instead of each one repeating the idiom.! -type d ! -type falso covers FIFOs and sockets, not just symlinks.A cleanup that does not take effect now fails the export rather than returning success.
shell_exec()cannot report an exit status, so the original version discarded the result entirely and any failure —findmissing fromPATH, an unreadable subdirectory, a-deleterefusal — would have left the symlinks in place whileexport()still reportedresult => true. A successfulfindprints nothing, so any output is treated as a failure, with anerror_code/error_messagepair matching the shapeparse_svn_errors()returns.Tools\Filesystem::list()— skip symlinks, so callers oflist_files()/list()never receive one regardless of how the tree was produced.isFile()andisDir()stat the target, so without this a symlink is listed as whatever it points at.Both layers are deliberate, and the second is not merely belt-and-braces.
Filesystem::list()protects the callers that go through it —Import,Block_Plugin_Checker— but two hand the export path to an external process that walks the tree itself and never touches it:Plugin_Scan::export_plugin_locally()returns the path to Plugin Check, andi18n\Code_Importpasses it towp i18n make-pot. For those thefindis the only control, which is why its failure has to be loud.Notes
Zip\Builder::export_plugin()still has its ownfind -type lafter the export. It is redundant now, but it is the last gate before the ZIP that gets served, so I left it rather than fold an unrelated deletion into this change.Filesystem::list()as a rejection list rather than a read path —Upload_Handleratclass-upload-handler.php:232-233, which looks for.git/.phar/.shand friends. It is unaffected:$this->plugin_dircomes fromFilesystem::unzip()at:199, which has already removed symlinks before that check runs. Every other caller opens what it is handed.Filesystem::rmdir()shells out torm -rfrather than walkinglist(), so temp-directory cleanup is unaffected.RecursiveDirectoryIterator::hasChildren()defaults to$allowLinks = false, so a symlinked directory was never descended into. The newcontinuechanges what is returned, not how the tree is walked.Zip\Builderretries0.-prefixed versions against a rewritten tag URL on! $result, andImportcan reach its "no files in trunk, nor tags" branch. Theerrorsarray still carriesexport_cleanup_failed, and teaching those callers to distinguish "export failed" from "export unusable" felt like a separate change.Testing
tests/Filesystem_Symlink_Test.phpcovers a tree containing a real file, a real directory, a symlink to a file outside the tree, and a symlink to a directory outside it — including the exact pattern lookupImport::find_readme_file()performs. The four tests fail againsttrunkand pass with this change.The fixture asserts its own construction. Both
symlink()calls and both writes are checked, because a failedsymlink()would leave a tree of only real entries and a failed write to the link's target would leavereadme.txtdangling — andisFile()is false on a dangling link, so it would have been filtered out even without the guard under test. Either way the suite would have stayed green with the fix reverted. Teardown removes the two roots throughFilesystem::rmdir(), which no-ops on the empty string that an abortedsetUp()leaves behind.The
SVN::export()cleanup itself needs a live SVN server, so it is not covered by the suite. I verified the predicate by hand against a fixture containing a symlink to a file, a symlink to a directory, a FIFO, a regular file and a subdirectory: the first three are removed, the last two are kept, and it does not recurse through the symlinked directory it deletes. I also confirmedfindis silent on success and prints to stderr on failure, which is what the new check keys on.phpcsis clean on the new file (0 errors, 0 warnings) and neither modified file gains a violation.🤖 Generated with Claude Code
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