diff options
Diffstat (limited to 'thirdparty/libpng/pngrutil.c')
| -rw-r--r-- | thirdparty/libpng/pngrutil.c | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/thirdparty/libpng/pngrutil.c b/thirdparty/libpng/pngrutil.c index fb5f5f083d..bee0ea1158 100644 --- a/thirdparty/libpng/pngrutil.c +++ b/thirdparty/libpng/pngrutil.c @@ -1,7 +1,7 @@ /* pngrutil.c - utilities to read a PNG file * - * Last changed in libpng 1.6.26 [October 20, 2016] + * Last changed in libpng 1.6.27 [January 5, 2017] * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) @@ -418,9 +418,10 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner) png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED; } -#if ZLIB_VERNUM >= 0x1281 - /* Turn off validation of the ADLER32 checksum */ - if ((png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0) +#if ZLIB_VERNUM >= 0x1281 && \ + defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_IGNORE_ADLER32) + if (((png_ptr->options >> PNG_IGNORE_ADLER32) & 3) == PNG_OPTION_ON) + /* Turn off validation of the ADLER32 checksum in IDAT chunks */ ret = inflateValidate(&png_ptr->zstream, 0); #endif @@ -716,7 +717,7 @@ png_decompress_chunk(png_structrp png_ptr, * the extra space may otherwise be used as a Trojan Horse. */ if (ret == Z_STREAM_END && - chunklength - prefix_size != lzsize) + chunklength - prefix_size != lzsize) png_chunk_benign_error(png_ptr, "extra compressed data"); } @@ -826,7 +827,7 @@ png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size, return Z_STREAM_ERROR; } } -#endif +#endif /* READ_iCCP */ /* Read and check the IDHR chunk */ @@ -4107,15 +4108,7 @@ png_read_IDAT_data(png_structrp png_ptr, png_bytep output, png_zstream_error(png_ptr, ret); if (output != NULL) - { - if(!strncmp(png_ptr->zstream.msg,"incorrect data check",20)) - { - png_chunk_benign_error(png_ptr, "ADLER32 checksum mismatch"); - continue; - } - else - png_chunk_error(png_ptr, png_ptr->zstream.msg); - } + png_chunk_error(png_ptr, png_ptr->zstream.msg); else /* checking */ { |