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"unable to open image file" error on Ubuntu 20.04 #54

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trappedinspacetime opened this issue Jan 4, 2022 · 9 comments
Open

"unable to open image file" error on Ubuntu 20.04 #54

trappedinspacetime opened this issue Jan 4, 2022 · 9 comments

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@trappedinspacetime
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Thank you for making this project.
I am on Ubuntu 20.04 platform. When I run ./lsix in sixel supported terminal, I get the following errors:

      montage-im6.q16: unable to open image `file://contents.png': No such file or directory @ error/blob.c/OpenBlob/2874.
      montage-im6.q16: unable to open image `file://test.png': No such file or directory @ error/blob.c/OpenBlob/2874.
      montage-im6.q16: unable to open image `file://test.png': No such file or directory @ error/blob.c/OpenBlob/2874.
      montage-im6.q16: missing an image filename `gif:-' @ error/montage.c/MontageImageCommand/1795.
      convert-im6.q16: no decode delegate for this image format `' @ error/constitute.c/ReadImage/560.
      convert-im6.q16: no images defined `sixel:-' @ error/convert.c/ConvertImageCommand/3258.
@hackerb9
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hackerb9 commented Jan 4, 2022 •
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How odd. What version of ImageMagick are you running?

convert --version

Are you able to view the images using convert?

convert test.png -geometry 800x500 sixel:-

If so, does it only break when using the file: URI?

convert file://contents.png -geometry 800x500 sixel:-

If that fails, please try it with the full work directory:

convert file://`pwd`/contents.png -geometry 800x500 sixel:-

Thank you for the bug report.

@trappedinspacetime
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trappedinspacetime commented Jan 5, 2022 •
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@hackerb9 Thank you for responding.

    convert --version
    Version: ImageMagick 6.9.10-23 Q16 x86_64 20190101 https://imagemagick.org
    Copyright: © 1999-2019 ImageMagick Studio LLC
    License: https://imagemagick.org/script/license.php
    Features: Cipher DPC Modules OpenMP 
    Delegates (built-in): bzlib djvu fftw fontconfig freetype jbig jng jpeg lcms lqr ltdl lzma openexr pangocairo png tiff webp wmf x xml zlib

No news is good news in Linux, so the following command works:

  convert test.png -geometry 800x500 sixel:-

It looks like a path issue:

        convert file://contents.png -geometry 800x500 sixel:-
      convert-im6.q16: unable to open image `file://contents.png': No such file or directory @ error/blob.c/OpenBlob/2874.
      convert-im6.q16: no images defined `sixel:-' @ error/convert.c/ConvertImageCommand/3258.

Feeding the full path also doesn't work:

       convert file://`pwd`/contents.png -geometry 800x500 sixel:-
      convert-im6.q16: unable to open image `file:///home/****/Desktop/01-2022/contents.png': No such file or directory @ error/blob.c/OpenBlob/2874.
      convert-im6.q16: no images defined `sixel:-' @ error/convert.c/ConvertImageCommand/3258.

@trappedinspacetime
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trappedinspacetime commented Jan 5, 2022 •
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I think it stems from the policy files in /etc/ImageMagick-6/ as suggested here https://askubuntu.com/questions/1181762/imagemagickconvert-im6-q16-no-images-defined
I played with the settings in /etc/ImageMagick-6/policy.xml.
I allowed path and url in the policy.xml but it didn't work. I even completely removed that file but nothing's changed.
I've just built ImageMagick from github source and it works well.

@hackerb9
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hackerb9 commented Jan 5, 2022

I'm glad ImageMagick works from source, but it's very weird that it doesn't work out of the box. I'd like to track that down.

I've examined Ubuntu's ImageMagick configuration files and it doesn't look like it has anything odd in the policy file. It hasn't even been updated since June of 2021.

If the problem was with the policy file, I think ImageMagick would not say "No such file or directory". Policy errors usually look like this:

montage-im6.q16: attempt to perform an operation not allowed by the security policy `FILE' @ error/constitute.c/IsCoderAuthorized/421.

Would you please humor me and try reinstalling Ubuntu's version then send me the output from these two commands?

This first one should work fine since it doesn't use file:// at all:

convert -debug all test.png -geometry 800x500 sixel:-

This second one should fail:

convert -debug all file://test.png -geometry 800x500 sixel:-

Thanks!

@trappedinspacetime
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/usr/bin/convert -debug all test.png -geometry 800x500 sixel:- works well again but output of its debug very long.

I post debug output of failing one:

      /usr/bin/convert -debug all file://test.png -geometry 800x500 sixel:-
      2022-01-06T14:10:40+03:00 0:00.000 0.000u 6.9.10 Configure convert[5457]: utility.c/ExpandFilenames/954/Configure
        Command line: /usr/bin/convert {-debug} {all} {file://test.png} {-geometry} {800x500} {sixel:-}
      2022-01-06T14:10:40+03:00 0:00.000 0.000u 6.9.10 Policy convert[5457]: policy.c/IsRightsAuthorized/604/Policy
        Domain: Module; rights=Read; pattern="PNG" ...
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/usr/share/ImageMagick-6/coder.xml"
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.10//config-Q16/coder.xml"
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/etc/ImageMagick-6/coder.xml"
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/usr/share/doc/imagemagick-6-common/htmlcoder.xml"
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/home/****/.config/ImageMagick/coder.xml"
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/home/****/.magick/coder.xml"
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Configure convert[5457]: coder.c/LoadCoderCache/818/Configure
        Loading coder configuration file "/etc/ImageMagick-6/coder.xml" ...
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Module convert[5457]: module.c/OpenModule/1300/Module
        Searching for module "PNG" using filename "png.la"
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Module convert[5457]: module.c/GetMagickModulePath/546/Module
        Searching for coder module file "png.la" ...
      2022-01-06T14:10:40+03:00 0:00.010 0.000u 6.9.10 Module convert[5457]: module.c/OpenModule/1309/Module
        Opening module at path "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.10/modules-Q16/coders/png.la"
      2022-01-06T14:10:40+03:00 0:00.010 0.010u 6.9.10 Module convert[5457]: module.c/OpenModule/1336/Module
        Method "RegisterPNGImage" in module "PNG" at address 0x7ffbb4062b00
      2022-01-06T14:10:40+03:00 0:00.010 0.010u 6.9.10 Module convert[5457]: module.c/OpenModule/1350/Module
        Method "UnregisterPNGImage" in module "PNG" at address 0x7ffbb40630c0
      2022-01-06T14:10:40+03:00 0:00.010 0.010u 6.9.10 Policy convert[5457]: policy.c/IsRightsAuthorized/604/Policy
        Domain: Module; rights=Read; pattern="FiLE" ...
      2022-01-06T14:10:40+03:00 0:00.010 0.010u 6.9.10 Module convert[5457]: module.c/OpenModule/1300/Module
        Searching for module "FiLE" using filename "file.la"
      2022-01-06T14:10:40+03:00 0:00.010 0.010u 6.9.10 Module convert[5457]: module.c/GetMagickModulePath/546/Module
        Searching for coder module file "file.la" ...
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/usr/share/ImageMagick-6/delegates.xml"
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.10//config-Q16/delegates.xml"
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/etc/ImageMagick-6/delegates.xml"
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/usr/share/doc/imagemagick-6-common/htmldelegates.xml"
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/home/****/.config/ImageMagick/delegates.xml"
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Configure convert[5457]: configure.c/GetConfigureOptions/685/Configure
        Searching for configure file: "/home/****/.magick/delegates.xml"
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Configure convert[5457]: delegate.c/LoadDelegateCache/2096/Configure
        Loading delegate configuration file "/etc/ImageMagick-6/delegates.xml" ...
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Policy convert[5457]: policy.c/IsRightsAuthorized/604/Policy
        Domain: Path; rights=Read; pattern="file://test.png" ...
      2022-01-06T14:10:40+03:00 0:00.030 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/usr/share/ImageMagick-6/locale.xml"
      2022-01-06T14:10:40+03:00 0:00.040 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.10//config-Q16/locale.xml"
      2022-01-06T14:10:40+03:00 0:00.040 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/etc/ImageMagick-6/locale.xml"
      2022-01-06T14:10:40+03:00 0:00.040 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/usr/share/doc/imagemagick-6-common/htmllocale.xml"
      2022-01-06T14:10:40+03:00 0:00.040 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/home/****/.config/ImageMagick/locale.xml"
      2022-01-06T14:10:40+03:00 0:00.040 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/home/****/.magick/locale.xml"
      2022-01-06T14:10:40+03:00 0:00.040 0.010u 6.9.10 Configure convert[5457]: locale.c/LoadLocaleCache/1209/Configure
        Loading locale configure file "/usr/share/ImageMagick-6/locale.xml" ...
      2022-01-06T14:10:40+03:00 0:00.050 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/usr/share/ImageMagick-6/english.xml"
      2022-01-06T14:10:40+03:00 0:00.090 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/usr/lib/x86_64-linux-gnu/ImageMagick-6.9.10//config-Q16/english.xml"
      2022-01-06T14:10:40+03:00 0:00.090 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/etc/ImageMagick-6/english.xml"
      2022-01-06T14:10:40+03:00 0:00.090 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/usr/share/doc/imagemagick-6-common/htmlenglish.xml"
      2022-01-06T14:10:40+03:00 0:00.090 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/home/****/.config/ImageMagick/english.xml"
      2022-01-06T14:10:40+03:00 0:00.090 0.010u 6.9.10 Locale convert[5457]: locale.c/GetLocaleOptions/856/Locale
        Searching for locale file: "/home/****/.magick/english.xml"
      2022-01-06T14:10:40+03:00 0:00.090 0.010u 6.9.10 Configure convert[5457]: locale.c/LoadLocaleCache/1209/Configure
        Loading locale configure file "/usr/share/ImageMagick-6/english.xml" ...
      2022-01-06T14:10:40+03:00 0:00.090 0.020u 6.9.10 Exception convert[5457]: blob.c/OpenBlob/2874/Exception
        unable to open image `file://test.png': No such file or directory
      2022-01-06T14:10:40+03:00 0:00.090 0.020u 6.9.10 Cache convert[5457]: cache.c/DestroyPixelCache/1182/Cache
        destroy 
      2022-01-06T14:10:40+03:00 0:00.090 0.020u 6.9.10 Policy convert[5457]: policy.c/IsRightsAuthorized/604/Policy
        Domain: Path; rights=Read; pattern="file://test.png" ...
      2022-01-06T14:10:40+03:00 0:00.090 0.020u 6.9.10 Exception convert[5457]: blob.c/OpenBlob/2874/Exception
        unable to open image `file://test.png': No such file or directory
      2022-01-06T14:10:40+03:00 0:00.090 0.020u 6.9.10 Cache convert[5457]: cache.c/DestroyPixelCache/1182/Cache
        destroy 
      2022-01-06T14:10:40+03:00 0:00.110 0.020u 6.9.10 Exception convert[5457]: convert.c/ConvertImageCommand/3258/Exception
        no images defined `sixel:-'
      convert: unable to open image `file://test.png': No such file or directory @ error/blob.c/OpenBlob/2874.
      convert: no images defined `sixel:-' @ error/convert.c/ConvertImageComma

@trappedinspacetime
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trappedinspacetime commented Jan 6, 2022 •
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FYI /usr/bin/convert file://pwd/test.png -geometry 800x500 sixel:- also is not working.
Output of /usr/bin/convert -debug all test.png -geometry 800x500 sixel:-:
debug-convert.txt

@trappedinspacetime trappedinspacetime mentioned this issue Jan 11, 2022
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@manfredsc
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Same for me, /usr/bin/convert file://foo.jpg -geometry 800x500 sixel:- is not working, without the "file://" protocol
it works fine.

So, if I remove the "file://" prefix in lsix, i.e. so line 243 reads like
onerow[len++]="$1"
everything is fine, I can see all image thumbnails, even when using path names in the command.
Is there any disadvantage or security implication to omit the "file://" protocol?
Otherwise I would suggest to just omit it.

@hackerb9
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Thank you. It is not a security issue. If I recall correctly, it was a workaround for the way ImageMagick treats files that have a colon in them. I can turn that into an "if/then", but am reluctant to complicate the code if the problem is actually in Ubuntu.

Just to double check: you are using Ubuntu 20? What version of ImageMagick is installed?

@manfredsc
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Oh, sorry, I seem to have hijacked this thread. No, not Ubuntu. I read this thread and figured it matched
my findings. I'm on openSUSE 15.3, ImageMagick 7.0.7-34 with some default SUSE hardening.

In my policy.xml, there is
<policy domain="coder" rights="none" pattern="URL" />
without this line (or changing to rights="read|write"), "file://" works.

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@trappedinspacetime @hackerb9 @manfredsc