https://bugzilla.wikimedia.org/show_bug.cgi?id=19930

           Summary: UploadFromUrl error with synchronous downloads
           Product: MediaWiki
           Version: 1.16-svn
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: Uploading
        AssignedTo: wikibugs-l@lists.wikimedia.org
        ReportedBy: b-jor...@northwestern.edu


Created an attachment (id=6386)
 --> (https://bugzilla.wikimedia.org/attachment.cgi?id=6386)
Patch against r53755 to fix the bugs

UploadFromUrl::initialize never sets dl_mode if asynchronous mode is false. And
then Http::doDownload doesn't bother to verify that it got any expected value
for dl_mode (or, for that matter, whether ASYNC_DOWNLOAD was requested when
it's not available). Which results in a null being returned (by falling off the
end of the function) rather than the expected error object.

I've attached a patch that fixes both of these: it makes UploadFromUrl's
dl_mode be set to SYNC_DOWNLOAD unless specifically set otherwise and makes
Http::doDownload try synchronous download unless async is requested and
available (instead of only when specifically requested). An alternate
possibility for the latter would be to return a Status::newFatal at the end of
the function, if you'd rather error out than try the sync download anyway.


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