[Libreoffice-bugs] [Bug 131693] Unable to open document if path has "\\?\" UNC prefix in Windows 10

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131693

Mike Kaganski <mikekaganski at hotmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |sbergman at redhat.com

--- Comment #2 from Mike Kaganski <mikekaganski at hotmail.com> ---
(In reply to Buovjaga from comment #1)
No. The problem here is specifically with "\\?\" prefix, not handled in
INetURLObject::convertRelToAbs and INetURLObject::setAbsURIRef, both used from
GetURL_Impl in desktop/source/app/app.cxx.

This results in the URL like "file:////?/C:/...", which then is converted back
to system path in osl_getSystemPathFromFileURL_ (sal/osl/w32/file_url.cxx),
which strips "file:///", and the rest "/?/C:/..." is not a valid path.

This can be easily fixed by a modification of osl_getSystemPathFromFileURL_ to
test for starting with "file:////?/" and then skipping only 7 characters, but
it seems that the proper fix is in INetURLObject, which should in theory behave
just like osl_getFileURLFromSystemPath for such paths, simply dropping "\\?\"
from the result URL.

However, I hesitate to touch this code myself (too fragile); Stephan, could you
take a look at it please?

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