fix(previews): Don't crash on animated WEBP images #38364
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szaimen
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nfebe
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Why not just create a preview provider to do this magic? OC_Image is one of those classes that still needs to die IMO. |
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Well yeah (#28279 et al + Imaginary support etc), but this PR just fixes what is still a common/still supported setup (particularly in small deployments). P.S. Is there an official deprecation of OC_Image preview generation? I thought it fell more into the category "we know it's coming, things are happening to build up to it, but not yet deprecated" 👀 |
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WebP preview provider: https://github.com/nextcloud/server/blob/master/lib/private/Preview/WebP.php Currently the generic implementation, using OC_Image, is used to generate previews for WebP. |
AndyScherzinger
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@ytoaa Can you elaborate? What are you experiencing when you're testing this PR doing in your environment? |
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Oh I think I'm mistaken. When will this merge into the main release? |
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@joshtrichards Please squash and use a conventional commit message. E.g. |
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/backport to stable29 |
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/backport to stable28 |
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Fixes nextcloud#30029 and nextcloud#37263 libgd handles animated WEBP images poorly and generates a meaningless error message as a result. We were returning a 500 error for these preview requests (web) and a fatal error at the command-line (occ). Now we bypass libgd if the we detect an animated WEBP image (and simply don't generate the preview). No more 500 error. Should fix occ too. Signed-off-by: Josh Richards <josh.t.richards@gmail.com> Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>
st3iny
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I don't get why cypress keeps failing. Could this be because the action is run from a fork? |
Yes iirc our cypress setup does not support forks |
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Alright, thanks for clarifying. @joshtrichards I'm sorry for the inconvenience but do you mind opening another PR from a branch on this repository directly? AFAIK, you should have permissions to do so. |
skjnldsv
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4. to release
Summary
libgd handles animated WEBP images poorly (fatal error and generates a meaningless/misleading error message). As a result we were returning a 500 error for these
/previewrequests (web) and a fatal error at the command-line (occ). Now we bypass libgd if we detect an animated WEBP image and simply don't generate the preview. No more 500 error. Should fixocctoo.The prospect of incorporating animation handling is an upstream matter:
libgd/libgd#648
https://bugs.php.net/bug.php?id=79809
https://www.php.net/manual/en/function.imagecreatefromwebp.php
TODO
Checklist