Convert.exe "Corrupt image"

Post any defects you find in the released or beta versions of the ImageMagick software here. Include the ImageMagick version, OS, and any command-line required to reproduce the problem. Got a patch for a bug? Post it here.
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maga

Convert.exe "Corrupt image"

Post by maga »

Noting that several image spam mails slipped our ocr scripts, I found out that some manipulated gif images cause errors in CONVERT.EXE. However, the same images can be displayed correctly. Updating to the latest version of CONVERT.EXE did not solve the problem.

Software version:
ImageMagick 6.3.3 03/10/07 Q16 http://www.imagemagick.org

Commandline utilized:
  • C:\temp\xocr\convert.exe +adjoin -depth 8 "C:\temp\xocr\viag01\fbcib.gif" pnm:"C:\temp\xocr\viag01\PNM\fbcib.gif.pnm"
Debug Log:
  • 2007-03-16T12:37:31+01:00 0:01 0.000u 6.3.3 Configure convert.exe[2880]: nt-base.c/NTRegistryKeyLookup/1536/Configure
    SOFTWARE\ImageMagick\6.3.3\Q:16
    2007-03-16T12:37:31+01:00 0:01 0.000u 6.3.3 Configure convert.exe[2880]: nt-base.c/NTRegistryKeyLookup/1554/Configure
    ConfigurePath
    2007-03-16T12:37:31+01:00 0:01 0.000u 6.3.3 Configure convert.exe[2880]: configure.c/GetConfigureOptions/482/Configure
    Searching for configure file: "C:\Programme\ImageMagick-6.3.3-Q16\delegates.xml"
    2007-03-16T12:37:31+01:00 0:01 0.000u 6.3.3 Configure convert.exe[2880]: configure.c/GetConfigureOptions/482/Configure
    Searching for configure file: "C:\Dokumente und Einstellungen\gnm\delegates.xml"
    2007-03-16T12:37:31+01:00 0:01 0.000u 6.3.3 Configure convert.exe[2880]: configure.c/GetConfigureOptions/482/Configure
    Searching for configure file: "delegates.xml"
    2007-03-16T12:37:31+01:00 0:01 0.000u 6.3.3 Configure convert.exe[2880]: delegate.c/LoadDelegateList/1159/Configure
    Loading delegate map "C:\Programme\ImageMagick-6.3.3-Q16\delegates.xml" ...
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Configure convert.exe[2880]: delegate.c/LoadDelegateList/1159/Configure
    Loading delegate map "delegates.xml" ...
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Configure convert.exe[2880]: utility.c/ExpandFilenames/812/Configure
    Command line: C:\temp\xocr\convert.exe{+adjoin}{-depth}{8}{-debug}{all}{C:\temp\xocr\viag01\fbcib.gif}{pnm:C:\temp\xocr\viag01\PNM\fbcib.gif.pnm}

    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Blob convert.exe[2880]: blob.c/OpenBlob/2185/Blob
    read 4096 magic header bytes
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Cache convert.exe[2880]: cache.c/DestroyCacheInfo/1851/Cache
    destroy
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Configure convert.exe[2880]: nt-base.c/NTRegistryKeyLookup/1536/Configure
    SOFTWARE\ImageMagick\6.3.3\Q:16
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Configure convert.exe[2880]: nt-base.c/NTRegistryKeyLookup/1554/Configure
    ConfigurePath
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Configure convert.exe[2880]: configure.c/GetConfigureOptions/482/Configure
    Searching for configure file: "C:\Programme\ImageMagick-6.3.3-Q16\magic.xml"
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Configure convert.exe[2880]: configure.c/GetConfigureOptions/482/Configure
    Searching for configure file: "C:\Dokumente und Einstellungen\gnm\magic.xml"
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Configure convert.exe[2880]: configure.c/GetConfigureOptions/482/Configure
    Searching for configure file: "magic.xml"
    2007-03-16T12:37:31+01:00 0:01 0.016u 6.3.3 Configure convert.exe[2880]: magic.c/LoadMagicList/673/Configure
    Loading magic map "C:\Programme\ImageMagick-6.3.3-Q16\magic.xml" ...
    2007-03-16T12:37:31+01:00 0:01 0.031u 6.3.3 Configure convert.exe[2880]: magic.c/LoadMagicList/673/Configure
    Loading magic map "magic.xml" ...
    2007-03-16T12:37:31+01:00 0:01 0.031u 6.3.3 Blob convert.exe[2880]: blob.c/OpenBlob/2185/Blob
    read 4096 magic header bytes
    2007-03-16T12:37:31+01:00 0:01 0.031u 6.3.3 Resource convert.exe[2880]: resource.c/AcquireMagickResource/216/Resource
    Area: 893.496kb/893.496kb/4gb
    2007-03-16T12:37:31+01:00 0:01 0.031u 6.3.3 Resource convert.exe[2880]: resource.c/AcquireMagickResource/216/Resource
    Memory: 893.496kb/893.496kb/3gb
    2007-03-16T12:37:31+01:00 0:01 0.031u 6.3.3 Cache convert.exe[2880]: cache.c/OpenCache/3221/Cache
    open C:\temp\xocr\viag01\fbcib.gif[0] (anonymous memory, 391x234 893.496kb)
    2007-03-16T12:37:31+01:00 0:01 0.063u 6.3.3 Configure convert.exe[2880]: nt-base.c/NTRegistryKeyLookup/1536/Configure
    SOFTWARE\ImageMagick\6.3.3\Q:16
    2007-03-16T12:37:31+01:00 0:01 0.063u 6.3.3 Configure convert.exe[2880]: nt-base.c/NTRegistryKeyLookup/1554/Configure
    ConfigurePath
    2007-03-16T12:37:31+01:00 0:01 0.063u 6.3.3 Locale convert.exe[2880]: locale.c/GetLocaleOptions/498/Locale
    Searching for locale file: "C:\Programme\ImageMagick-6.3.3-Q16\locale.xml"
    2007-03-16T12:37:31+01:00 0:01 0.063u 6.3.3 Locale convert.exe[2880]: locale.c/GetLocaleOptions/498/Locale
    Searching for locale file: "C:\Dokumente und Einstellungen\gnm\locale.xml"
    2007-03-16T12:37:31+01:00 0:01 0.063u 6.3.3 Locale convert.exe[2880]: locale.c/GetLocaleOptions/498/Locale
    Searching for locale file: "locale.xml"
    2007-03-16T12:37:31+01:00 0:01 0.063u 6.3.3 Configure convert.exe[2880]: locale.c/LoadLocaleList/830/Configure
    Loading locale map "C:\Programme\ImageMagick-6.3.3-Q16\locale.xml" ...
    2007-03-16T12:37:31+01:00 0:01 0.063u 6.3.3 Configure convert.exe[2880]: locale.c/LoadLocaleList/830/Configure
    Loading locale map "C:\Programme\ImageMagick-6.3.3-Q16\english.xml" ...
    2007-03-16T12:37:31+01:00 0:01 0.109u 6.3.3 Configure convert.exe[2880]: locale.c/LoadLocaleList/830/Configure
    Loading locale map "" ...
    2007-03-16T12:37:31+01:00 0:01 0.109u 6.3.3 Exception convert.exe[2880]: blob.c/FileToBlob/797/Exception
    unable to open file `english.xml': No such file or directory
    2007-03-16T12:37:31+01:00 0:01 0.109u 6.3.3 Configure convert.exe[2880]: locale.c/LoadLocaleList/830/Configure
    Loading locale map "english.xml" ...
    2007-03-16T12:37:31+01:00 0:01 0.109u 6.3.3 Exception convert.exe[2880]: gif.c/DecodeImage/500/Exception
    Corrupt image `C:\temp\xocr\viag01\fbcib.gif'
    2007-03-16T12:37:31+01:00 0:01 0.109u 6.3.3 Exception convert.exe[2880]: gif.c/ReadGIFImage/1243/Exception
    Corrupt image `C:\temp\xocr\viag01\fbcib.gif'
    2007-03-16T12:37:31+01:00 0:01 0.109u 6.3.3 Resource convert.exe[2880]: resource.c/RelinquishMagickResource/819/Resource

    Memory: 893.496kb/0b/3gb
    2007-03-16T12:37:31+01:00 0:01 0.125u 6.3.3 Cache convert.exe[2880]: cache.c/DestroyCacheInfo/1851/Cache
    destroy C:\temp\xocr\viag01\fbcib.gif[0]
    2007-03-16T12:37:31+01:00 0:01 0.125u 6.3.3 Exception convert.exe[2880]: convert.c/ConvertImageCommand/2541/Exception
    missing an image filename `pnm:C:\temp\xocr\viag01\PNM\fbcib.gif.pnm'
"Corrupt" fbcib.gif file:
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maga

Re: Convert.exe "Corrupt image"

Post by maga »

The issue is still unsolved with version ImageMagick-6.3.3-5-Q16-windows-static.exe.

I was able to convert the "corrupt" images with other (GUI) tools, but none of them offers the flexible commandline interface of convert.exe.

If I can provide more information to pinpoint the bug, please let me know.
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User avatar
magick
Site Admin
Posts: 11064
Joined: 2003-05-31T11:32:55-07:00

Re: Convert.exe "Corrupt image"

Post by magick »

We tried a number of tools to read your image and they all failed because the image is corrupt. We tend to bail if an image is corrupt to avoid possible stack overflow or other vulnerability exploits.
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maga

Re: Convert.exe "Corrupt image"

Post by maga »

Thank you for your efforts. I agree that a stable tool should comply to standards and give up converting rather than producing ambiguous results.

On some occasions, however, a commandline switch to "repair" or just "ignore errors" would be great, either to salvage broken images or to work around intentional image corruption.

I wonder... any browser and e-mail client can display the image. IrfanView and PVW32Con can do some conversions on it. Is there a thing like minor and major image corruption?
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maga

Re: Convert.exe "Corrupt image"

Post by maga »

The problem is solved. The culprit was the image extraction step which failed to properly convert the e-mail attachment into an image file.

We tried different e-mail extractors of course, but more than one creates the same corrupt output. As it looks, these extractors seem to base on the same image handling libraries.

Sorry for bothering and thank you for your input.
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