User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 I'm trying to Save As an email message to a unix pipe (created with mkfifo). The purpose of this is I have a process on the other end of the pipe that will read the message and log it to my SQL contact database. All would be fine except mozilla seems to delete the pipe before writing to it. So my fifo gets deleted and then mozilla ends up just creating a regular file instead of writing to the pipe. Is it possible to just open the file (if it exists) for write at 0 and truncate, rather than deleting, and then writing? Reproducible: Always Steps to Reproduce: 1. mkfifo testfifo.eml 2. cat testfifo.eml 3. execute File-Save_As in mozilla 4. Select the file testfito.eml Actual Results: testfifo gets deleted and a new file is created called testfifo.eml which contains the contents of the message. Expected Results: mozilla should (imho) simply write the contents of the message out to the file without deleting it. The contents of the message should appear as the output of the cat process. This integration effort is part of wyatterp.org. Seems like this fix would be applicable to any special file or fifo in the filesystem used for capturing file data in this way. Maybe this really should be an enhancement request, but since I haven't been able to figure out a workaround, I'll list it as normal for now.
OK, I found 2 things: 1. If the mail folder I'm saving from is in a pop account, this problem does not occur (no pre-delete). 2. If the folder is an imap or news folder, the file does get deleted before write. I've found in base/util/nsMsgMailNewsUrl.cpp, at the top of method nsMsgSaveAsListener::SetupMsgWriteStream the comment: // if the file already exists, delete it. Is this really necessary? Can we just delete these 3 lines? If not, can we just truncate the file to 0 somehow? It looks like soon after in GetOutputStream, an OpenStreamForWriting() is performed which should truncate the file, I would think... Kyle
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Status: UNCONFIRMED → RESOLVED
Last Resolved: 13 years ago
Resolution: --- → EXPIRED
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