Legacy ImageMagick Discussions Archive

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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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.

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.

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?

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.