[SOLVED] WebDAV error while filename contains special chars

Hello, using linux server version 9.0.2 (same error occur on 8.0.5), whenever i try to use WebDAV on macOS while filename contains special character for example: “á”, there is an error, related seafdav.log:

2022-01-14 14:51:48.903 - <140285241718528> wsgidav.wsgidav_app         INFO    : - example@example.com - [2022-01-14 13:51:48] "PROPFIND /library/á.txt" length=167, depth=0, elap=0.083sec -> 404 Not Found
2022-01-14 14:51:49.077 - <140285328119552> wsgidav.error_printer       ERROR   :  Caught HTTPRequestException(HTTP_INTERNAL_ERROR)
Traceback (most recent call last):
  File "/opt/seafile/seafile-server-9.0.2/seahub/thirdpart/wsgidav/error_printer.py", line 52, in __call__
    for v in app_iter:
  File "/opt/seafile/seafile-server-9.0.2/seahub/thirdpart/wsgidav/request_resolver.py", line 213, in __call__
    for v in app_iter:
  File "/opt/seafile/seafile-server-9.0.2/seahub/thirdpart/wsgidav/request_server.py", line 126, in __call__
    app_iter = provider.custom_request_handler(environ, start_response, method)
  File "/opt/seafile/seafile-server-9.0.2/seahub/thirdpart/wsgidav/dav_provider.py", line 1525, in custom_request_handler
    return default_handler(environ, start_response)
  File "/opt/seafile/seafile-server-9.0.2/seahub/thirdpart/wsgidav/request_server.py", line 780, in do_PUT
    res = parentRes.create_empty_resource(util.get_uri_name(path))
  File "/opt/seafile/seafile-server-9.0.2/seahub/thirdpart/wsgidav/seafile_dav_provider.py", line 457, in create_empty_resource
wsgidav.dav_error.DAVError: DAVError(500 Internal Server Error: An internal server error occurred)

2022-01-14 14:51:49.078 - <140285328119552> wsgidav.error_printer       ERROR   :  e.src_exception:
2022-01-14 14:51:49.079 - <140285328119552> wsgidav.wsgidav_app         INFO    : - example@example.com - [2022-01-14 13:51:49] "PUT /library/á.txt" length=15872, elap=0.139sec -> 500 Internal Server Error

What is wierd is that the file gets created but have 0 bytes. When i tryed to take a look at souce there are two functions which seems to handle encoding differently, code from “/seahub/thirdpart/wsgidav/seafile_dav_provider.py”:

def create_empty_resource(self, name):
    seafile_api.post_empty_file(self.repo.id, self.rel_path, name, self.username) # this seems to handle it properly
    member_rel_path = "/".join([self.rel_path, name])
    member_path = "/".join([self.path, name])
    obj = resolveRepoPath(repo, member_rel_path) # but here i guess encoding somehow mess things up

Wanted to kinda dump the values to log but i dunno how, seems like these files are cached or something like that, because any change i do in there doesn’t make a difference.

Found solution, in source code to server i found out that the seafile_api.post_empty_file utf8-normalize the file name, so running pip install unicodedata2 and modifying file mentioned above seafile_dav_provider.py, adding import unicodedata to “import section” and then simply adding this line: name = unicodedata.normalize('NFC',name) as first line in function def create_empty_resource(self, name): did the job

Edit 2:
Server version 9.0.4 solves this issue.

1 Like

@daniel.pan Wouldn’t this be something that should be merged into the code base of Seafile Server?

Thanks for the notification. We will check it.