refactor(@angular/cli): make list_projects tool resilient to symlink loops #31494
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…loops The file traversal logic in the `list_projects` MCP tool did not previously handle symbolic link loops. In a repository with a symlink pointing to a parent directory, this could cause the tool to enter an infinite loop, consuming CPU and memory until it crashed or was terminated. This commit enhances the `findAngularJsonFiles` function to make it resilient to such loops. It now uses `fs.stat` to retrieve the inode of each directory and tracks visited inodes in a Set. If a directory with a previously seen inode is encountered, it is skipped, effectively breaking the infinite loop. This change adds a minor performance overhead due to the extra `stat` call per directory, but this is a trade-off for the increase in robustness and stability when operating on complex or untrusted file systems.
jkrems
approved these changes
Oct 16, 2025
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The file traversal logic in the
list_projectsMCP tool did not previously handle symbolic link loops. In a repository with a symlink pointing to a parent directory, this could cause the tool to enter an infinite loop, consuming CPU and memory until it crashed or was terminated.This commit enhances the
findAngularJsonFilesfunction to make it resilient to such loops. It now usesfs.statto retrieve the inode of each directory and tracks visited inodes in a Set. If a directory with a previously seen inode is encountered, it is skipped, effectively breaking the infinite loop.This change adds a minor performance overhead due to the extra
statcall per directory, but this is a trade-off for the increase in robustness and stability when operating on complex or untrusted file systems.