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[libpng17] Don't recognize known sRGB profiles as sRGB if they have been hacked,

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but don't reject them and don't issue a copyright violation warning.
This commit is contained in:
Glenn Randers-Pehrson 2014-02-26 11:52:00 -06:00
parent 148cdac18f
commit deb920b4a7
1 changed files with 12 additions and 11 deletions
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23
png.c
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@ -696,13 +696,13 @@ png_get_copyright(png_const_structrp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.7.0beta32 - February 6, 2014" PNG_STRING_NEWLINE \
"libpng version 1.7.0beta32 - February 26, 2014" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2014 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE;
# else
return "libpng version 1.7.0beta32 - February 6, 2014\
return "libpng version 1.7.0beta32 - February 26, 2014\
Copyright (c) 1998-2014 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@ -2203,15 +2203,16 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
}
}
# if PNG_sRGB_PROFILE_CHECKS > 0
/* The signature matched, but the profile had been changed in some
* way. This is an apparent violation of the ICC terms of use and,
* anyway, probably indicates a data error or uninformed hacking.
*/
if (png_sRGB_checks[i].have_md5)
png_benign_error(png_ptr,
"copyright violation: edited ICC profile ignored");
# endif
# if PNG_sRGB_PROFILE_CHECKS > 0
/* The signature matched, but the profile had been changed in some
* way. This probably indicates a data error or uninformed hacking.
* Fall through to "no match".
*/
png_chunk_report(png_ptr,
"Not recognizing known sRGB profile that has been edited",
PNG_CHUNK_WARNING);
break;
# endif
}
}