|author||Kyle Larose <firstname.lastname@example.org>||Fri Jan 22 13:30:51 2021 +0000|
|committer||Nigel Tao <email@example.com>||Fri Oct 14 08:14:12 2022 +0000|
webdav: ignore path and perm errors in PROPFIND PROPFIND can walk through directories, retrieving information about each file. Unfortunately, the filesystem may deny access to the WebDAV server for various reasons, such as the file truly not being readable (e.g. a broken symlink), or because the server does not have permission to read the file. PROPFIND should ignore these. The current behaviour of the WebDAV server when encountering such issues is to immediately stop its walk, and output an http 500. This leads to poor behaviour with the builtin golang server, since the walk has likely already written out its status header as part of serving the previously walked files' properties. The server closes the response, also emitting an error log. While the error log is noisy, the closed response is truly an issue: the xml returned to the client is invalid, which means that the response is useless. It is not unreasonable to expect that a directory shared using WebDAV has files which cannot be read for the reasons given above. The shared directory becomes useless with the current behavior. Rather than making directories with unreadable files useless, skip over anything that is bad. A more nuanced solution to this problem could likely involve indicating that the requested properties have problems, or buffering the response prior to returning the failure. However, this change is simple and a move in the right direction. Fixes golang/go#16195 Fixes golang/go#43782 Change-Id: I065e4c90f7ef797709e5e81e7318c3eafae6db71 GitHub-Last-Rev: d56917e02885fb4151c0d6d8303be3e70dd4aa7a GitHub-Pull-Request: golang/net#91 Reviewed-on: https://go-review.googlesource.com/c/net/+/285752 Reviewed-by: Nigel Tao <firstname.lastname@example.org> Reviewed-by: Nigel Tao (INACTIVE; USE @golang.org INSTEAD) <email@example.com> Run-TryBot: Nigel Tao <firstname.lastname@example.org> TryBot-Result: Gopher Robot <email@example.com> Reviewed-by: Dmitri Shuralyov <firstname.lastname@example.org> Reviewed-by: Matthew Holt <email@example.com> Reviewed-by: Dmitri Shuralyov <firstname.lastname@example.org>
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