X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/7977fe382a3c8829f7abfd4aacd3155e204273a6..d9214e7e975efb8ebeb5dbe35e2844e9ebd35a9f:/doc/bugs/attachment:_failed_to_get_filehandle.mdwn diff --git a/doc/bugs/attachment:_failed_to_get_filehandle.mdwn b/doc/bugs/attachment:_failed_to_get_filehandle.mdwn index d531cdf47..acfc60078 100644 --- a/doc/bugs/attachment:_failed_to_get_filehandle.mdwn +++ b/doc/bugs/attachment:_failed_to_get_filehandle.mdwn @@ -4,9 +4,112 @@ the error message like below: Błąd: failed to get filehandle +> Can you do some debugging? If you edit attachment.pm line 136, to print +> out what it did get, and show me what that yields, maybe I can figure +> this out. + + error("failed to get filehandle ($fh)"); + +>> Sure. I've done the change and it seems that $fh variable is undefined: + +>> Use of uninitialized value in concatenation (.) or string at /usr/share/perl5/IkiWiki/Plugin/attachment.pm line 135. +>> failed to get filehandle () + +> Also, what web server and version of perl is this? --[[Joey]] + +>> It's Apache2 2.2.8-1ubuntu0.3 and Perl 5.8.8-12 from Ubuntu Hardy. --[[Paweł|ptecza]] + +>>> Hmm, is your CGI.pm perhaps creating the attachment temp file, but +>>> not providing an open filehandle to it via the `upload` method? +>>> Change the debugging line to this: --[[Joey]] + + error("failed to get filehandle:$fh ; file:$filename ; is ref:".ref($q->param('attachment'))); + +>>>> Now my Ikiwiki returns: + +>>>> failed to get filehandle: ; file:sandbox/test.txt ; is ref: + +>>>> Is it helpful for you? --[[Paweł|ptecza]] + +>>>>> Yes, this suggests that CGI.pm's `upload` function is not working, +>>>>> but that it *is* returning a filehandle pointing at the attachment +>>>>> using the old method. Hmm, so I'll bet you have a CGI.pm version +>>>>> older than 2.47. Can you find your system's CGI.pm and grep for +>>>>> "VERSION" in it to determine the version? I checked debian stable. +>>>>> and its perl 5.8.8 has version 3.15, so is not affected, I think. + +>>>>>> I have CGI.pm 3.15 too: + +>>>>>> $ grep VERSION= /usr/share/perl/5.8.8/CGI.pm +>>>>>> $CGI::VERSION='3.15'; + +>>>>> I've just checked in a fix that should work, can you test it? +>>>>> 71f10579c00a8ddc20ada1a1efd33aac25a3da7e --[[Joey]] + +>>>>>> I've patched `attachment.pm` module, but the bug still occurs. +>>>>>> However I can see a little progress. I changed invoking `error()` +>>>>>> subroutine like you showed me before and now Ikiwiki prints + +>>>>>> failed to get filehandle:test.txt ; file:sandbox/test.txt ; is ref: + +>>>>>> --[[Paweł|ptecza]] + +>>>>>>> Well then, your CGI.pm is somehow not behaving as its documentation +>>>>>>> describes, in two ways: +>>>>>>> 1. `upload()` is not returning a reference to the filehandle +>>>>>>> 2. The filename returned by `param("attachment")` is not also +>>>>>>> a file handle. +>>>>>>> That seems very broken. I can try to work around it some more +>>>>>>> though. I've checked in a second try at dealing with things, can +>>>>>>> you try it? --[[Joey]] + +>>>>>>>> Do you mean that 66f35e30dcea03c631a293e2341771277543b4ae? +>>>>>>>> If so, then it causes "Internal Server Error" for me: + +>>>>>>>> Can't use string ("test.txt") as a symbol ref while "strict refs" in use at /usr/share/perl5/IkiWiki/Plugin/attachment.pm line 144. + +>>>>>>>> I can rebuild Debian stable source package with CGI for Perl. Maybe it will help me? What do you think? --[[Paweł|ptecza]] + +>>>>>>>>> Silly thinko on my part, fixed that in git.. --[[Joey]] + +>>>>>>>>>> Thanks for the fix, Joey! Now CGI doesn't fails, but still no success with attaching file: + +>>>>>>>>>> failed to open : No such file or directory + +>>>>>>>>>> Do you have any another idea how to resolve that problem? I can try with rebuilding +>>>>>>>>>> package `perl-modules` if it's necessary in that situation. --[[Paweł|ptecza]] + +>>>>>>>>>>> If CGI.pm is not creating a temp file, not providing a +>>>>>>>>>>> filehandle by either of its documented methods, then it's just +>>>>>>>>>>> broken; ikiwiki can't deal with that level of brokennecess. +>>>>>>>>>>> I need to find out if this affects stable in general, or just +>>>>>>>>>>> you/ubuntu. --[[Joey]] + +>>>>>>>>>>>> Same thing on FreeBSD using CGI.pm 3.15. Looks like $self->{'.tmpfiles'} in CGI.pm +>>>>>>>>>>>> is not populated with the information about the uploaded file, causing tmpFileName() +>>>>>>>>>>>> to return '' (unloadInfo(), which uses the same lookup method fails in the same manner), +>>>>>>>>>>>> but I have yet to find out why this happens. --[[HenrikBrixAndersen]] + The same message I can see in the Apache log file. There is also following warning: Use of uninitialized value in length at /usr/share/perl5/IkiWiki/Plugin/attachment.pm line 36. +> This is unrelated, I've fixed the warning message. --[[Joey]] + Is it Ikiwiki bug or my attachment plugin is misconfigured? --[[Paweł|ptecza]] + +> I've reproduced the bug, and it does seem to be a bug with the perl in +> debian stable/ubuntu hardy. Trying to figure it out --[[Joey]] + +> This was amazingly disgusting, see commit message for the full horror of +> the details. I think it's [[done]] -- at least it works on debian stable +> now. --[[Joey]] + +>> Wow! It's probably the biggest Ikiwiki commit message I've ever seen :) + +>> Yes, I can confirm that now the plugin works for me and I'm able to add +>> attachments to my wiki. Yupiii! :D +>> Thanks a lot, Joey! You're really great! :) --[[Paweł|ptecza]] + +>> Thank you very much for your effort, Joey! :) --[[Paweł|ptecza]]