[libpng16] Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
pngset.c to avoid warnings about dead code.
This commit is contained in:
Glenn Randers-Pehrson
parent
7a015b92b2
commit
bd76965879
7
ANNOUNCE
7
ANNOUNCE
@ -1,4 +1,4 @@
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Libpng 1.6.17beta01 - January 13, 2015
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Libpng 1.6.17beta01 - January 27, 2015
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This is not intended to be a public release. It will be replaced
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within a few weeks by a public version or by another test version.
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@ -25,7 +25,7 @@ Other information:
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Changes since the last public release (1.6.16):
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Version 1.6.17beta01 [January 13, 2015]
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Version 1.6.17beta01 [January 27, 2015]
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Removed duplicate PNG_SAFE_LIMITS_SUPPORTED handling from pngconf.h
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Corrected the width limit calculation in png_check_IHDR().
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Removed user limits from pngfix. Also pass NULL pointers to
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@ -36,6 +36,9 @@ Version 1.6.17beta01 [January 13, 2015]
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Fixed byte order in 2-byte filler, in png_do_read_filler().
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Made the check for out-of-range values in png_set_tRNS() detect
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values that are exactly 2^bit_depth, and work on 16-bit platforms.
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Merged some parts of libpng-1.6.17beta01 and libpng-1.7.0beta47.
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Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
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pngset.c to avoid warnings about dead code.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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5
CHANGES
5
CHANGES
@ -5126,7 +5126,7 @@ Version 1.6.16rc03 [December 21, 2014]
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Version 1.6.16 [December 22, 2014]
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No changes.
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Version 1.6.17beta01 [January 13, 2015]
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Version 1.6.17beta01 [January 27, 2015]
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Removed duplicate PNG_SAFE_LIMITS_SUPPORTED handling from pngconf.h
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Corrected the width limit calculation in png_check_IHDR().
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Removed user limits from pngfix. Also pass NULL pointers to
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@ -5137,6 +5137,9 @@ Version 1.6.17beta01 [January 13, 2015]
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Fixed byte order in 2-byte filler, in png_do_read_filler().
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Made the check for out-of-range values in png_set_tRNS() detect
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values that are exactly 2^bit_depth, and work on 16-bit platforms.
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Merged some parts of libpng-1.6.17beta01 and libpng-1.7.0beta47.
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Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
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pngset.c to avoid warnings about dead code.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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63
png.c
63
png.c
@ -1,8 +1,8 @@
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/* png.c - location for general purpose libpng functions
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*
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* Last changed in libpng 1.6.16 [December 22, 2014]
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* Copyright (c) 1998-2014 Glenn Randers-Pehrson
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* Last changed in libpng 1.6.17 [(PENDING RELEASE)]
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* Copyright (c) 1998-2015 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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*
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@ -140,8 +140,10 @@ png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, png_size_t length)
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do
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{
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uInt safe_length = (uInt)length;
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#ifndef __COVERITY__
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if (safe_length == 0)
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safe_length = (uInt)-1; /* evil, but safe */
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#endif
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crc = crc32(crc, ptr, safe_length);
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@ -476,9 +478,10 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
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/* Free any tRNS entry */
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if (((mask & PNG_FREE_TRNS) & info_ptr->free_me) != 0)
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{
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info_ptr->valid &= ~PNG_INFO_tRNS;
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png_free(png_ptr, info_ptr->trans_alpha);
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info_ptr->trans_alpha = NULL;
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info_ptr->valid &= ~PNG_INFO_tRNS;
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info_ptr->num_trans = 0;
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}
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#endif
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@ -666,7 +669,7 @@ png_init_io(png_structrp png_ptr, png_FILE_p fp)
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}
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# endif
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#ifdef PNG_SAVE_INT_32_SUPPORTED
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# ifdef PNG_SAVE_INT_32_SUPPORTED
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/* The png_save_int_32 function assumes integers are stored in two's
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* complement format. If this isn't the case, then this routine needs to
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* be modified to write data in two's complement format. Note that,
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@ -681,7 +684,7 @@ png_save_int_32(png_bytep buf, png_int_32 i)
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buf[2] = (png_byte)((i >> 8) & 0xff);
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buf[3] = (png_byte)(i & 0xff);
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}
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#endif
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# endif
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# ifdef PNG_TIME_RFC1123_SUPPORTED
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/* Convert the supplied time into an RFC 1123 string suitable for use in
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@ -755,7 +758,7 @@ png_convert_to_rfc1123(png_structrp png_ptr, png_const_timep ptime)
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return NULL;
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}
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# endif
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# endif /* LIBPNG_VER < 10700 */
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# endif /* TIME_RFC1123 */
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#endif /* READ || WRITE */
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@ -769,13 +772,13 @@ png_get_copyright(png_const_structrp png_ptr)
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#else
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# ifdef __STDC__
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return PNG_STRING_NEWLINE \
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"libpng version 1.6.17beta01 - January 1, 2015" PNG_STRING_NEWLINE \
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"libpng version 1.6.17beta01 - January 27, 2015" PNG_STRING_NEWLINE \
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"Copyright (c) 1998-2015 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
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"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
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"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
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PNG_STRING_NEWLINE;
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# else
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return "libpng version 1.6.17beta01 - January 1, 2015\
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return "libpng version 1.6.17beta01 - January 27, 2015\
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Copyright (c) 1998-2015 Glenn Randers-Pehrson\
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Copyright (c) 1996-1997 Andreas Dilger\
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Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
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@ -2324,8 +2327,8 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
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*/
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else if (png_sRGB_checks[i].have_md5 == 0)
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{
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png_chunk_report(png_ptr, "out-of-date sRGB profile with"
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" no signature",
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png_chunk_report(png_ptr,
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"out-of-date sRGB profile with no signature",
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PNG_CHUNK_WARNING);
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}
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@ -2338,8 +2341,8 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
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* way. This probably indicates a data error or uninformed hacking.
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* Fall through to "no match".
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*/
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png_chunk_report(png_ptr, "Not recognizing known sRGB profile that"
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" has been edited",
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png_chunk_report(png_ptr,
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"Not recognizing known sRGB profile that has been edited",
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PNG_CHUNK_WARNING);
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break;
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# endif
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@ -2486,13 +2489,14 @@ png_check_IHDR(png_const_structrp png_ptr,
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png_warning(png_ptr, "Image width is zero in IHDR");
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error = 1;
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}
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else if (width > PNG_UINT_31_MAX)
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if (width > PNG_UINT_31_MAX)
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{
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png_warning(png_ptr, "Invalid image width in IHDR");
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error = 1;
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}
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else if (png_gt(((width + 7) & (~7)),
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if (png_gt(((width + 7) & (~7)),
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((PNG_SIZE_MAX
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- 48 /* big_row_buf hack */
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- 1) /* filter byte */
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@ -2513,41 +2517,38 @@ png_check_IHDR(png_const_structrp png_ptr,
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png_warning(png_ptr, "Image width is too large for this architecture");
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error = 1;
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}
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else
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{
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# ifdef PNG_SET_USER_LIMITS_SUPPORTED
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#ifdef PNG_SET_USER_LIMITS_SUPPORTED
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if (width > png_ptr->user_width_max)
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# else
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#else
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if (width > PNG_USER_WIDTH_MAX)
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# endif
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#endif
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{
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png_warning(png_ptr, "Image width exceeds user limit in IHDR");
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error = 1;
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}
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}
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if (height == 0)
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{
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png_warning(png_ptr, "Image height is zero in IHDR");
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error = 1;
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}
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else if (height > PNG_UINT_31_MAX)
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if (height > PNG_UINT_31_MAX)
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{
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png_warning(png_ptr, "Invalid image height in IHDR");
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error = 1;
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}
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else
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{
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# ifdef PNG_SET_USER_LIMITS_SUPPORTED
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#ifdef PNG_SET_USER_LIMITS_SUPPORTED
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if (height > png_ptr->user_height_max)
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# else
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#else
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if (height > PNG_USER_HEIGHT_MAX)
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# endif
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#endif
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{
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png_warning(png_ptr, "Image height exceeds user limit in IHDR");
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error = 1;
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}
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}
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/* Check other values */
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if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
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@ -2585,7 +2586,7 @@ png_check_IHDR(png_const_structrp png_ptr,
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error = 1;
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}
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# ifdef PNG_MNG_FEATURES_SUPPORTED
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#ifdef PNG_MNG_FEATURES_SUPPORTED
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/* Accept filter_method 64 (intrapixel differencing) only if
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* 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
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* 2. Libpng did not read a PNG signature (this filter_method is only
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@ -2618,13 +2619,13 @@ png_check_IHDR(png_const_structrp png_ptr,
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}
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}
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# else
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#else
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if (filter_type != PNG_FILTER_TYPE_BASE)
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{
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png_warning(png_ptr, "Unknown filter method in IHDR");
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error = 1;
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}
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# endif
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#endif
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if (error == 1)
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png_error(png_ptr, "Invalid IHDR data");
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@ -3206,7 +3207,7 @@ png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
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png_error(png_ptr, "ASCII conversion buffer too small");
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}
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# endif /* FIXED_POINT */
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#endif /* READ_SCAL */
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#endif /* SCAL */
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#if defined(PNG_FLOATING_POINT_SUPPORTED) && \
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!defined(PNG_FIXED_POINT_MACRO_SUPPORTED) && \
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@ -1515,8 +1515,10 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
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else if (size > 0)
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errmsg = "truncated";
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#ifndef __COVERITY__
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else
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errmsg = png_ptr->zstream.msg;
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#endif
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}
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/* else png_icc_check_tag_table output an error */
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41
pngset.c
41
pngset.c
@ -2,7 +2,7 @@
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/* pngset.c - storage of image information into info struct
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*
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* Last changed in libpng 1.6.17 [(PENDING RELEASE)]
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* Copyright (c) 1998-2014 Glenn Randers-Pehrson
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* Copyright (c) 1998-2015 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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*
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@ -190,6 +190,7 @@ png_set_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
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if (info_ptr->hist == NULL)
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{
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png_warning(png_ptr, "Insufficient memory for hIST chunk data");
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return;
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}
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@ -301,6 +302,7 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
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if (info_ptr->pcal_purpose == NULL)
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{
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png_warning(png_ptr, "Insufficient memory for pCAL purpose");
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return;
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}
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@ -322,6 +324,7 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
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if (info_ptr->pcal_units == NULL)
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{
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png_warning(png_ptr, "Insufficient memory for pCAL units");
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return;
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}
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@ -333,6 +336,7 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
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if (info_ptr->pcal_params == NULL)
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{
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png_warning(png_ptr, "Insufficient memory for pCAL params");
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return;
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}
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@ -349,6 +353,7 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
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if (info_ptr->pcal_params[i] == NULL)
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{
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png_warning(png_ptr, "Insufficient memory for pCAL parameter");
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return;
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}
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@ -398,6 +403,7 @@ png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
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if (info_ptr->scal_s_width == NULL)
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{
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png_warning(png_ptr, "Memory allocation failed while processing sCAL");
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return;
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}
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@ -416,6 +422,7 @@ png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
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info_ptr->scal_s_width = NULL;
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png_warning(png_ptr, "Memory allocation failed while processing sCAL");
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return;
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}
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@ -519,6 +526,7 @@ png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
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else
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{
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png_warning(png_ptr, "Invalid palette length");
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return;
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}
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}
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@ -531,7 +539,6 @@ png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
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))
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{
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png_error(png_ptr, "Invalid palette");
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return;
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}
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/* It may not actually be necessary to set png_ptr->palette here;
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@ -655,6 +662,7 @@ png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
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if (new_iccp_name == NULL)
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{
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png_benign_error(png_ptr, "Insufficient memory to process iCCP chunk");
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return;
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}
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@ -668,6 +676,7 @@ png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
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new_iccp_name = NULL;
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png_benign_error(png_ptr,
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"Insufficient memory to process iCCP profile");
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return;
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}
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@ -743,6 +752,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
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{
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png_chunk_report(png_ptr, "too many text chunks",
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PNG_CHUNK_WRITE_ERROR);
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return 1;
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}
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@ -798,7 +808,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
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else
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lang_key_len = 0;
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}
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# else /* PNG_iTXt_SUPPORTED */
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# else /* iTXt */
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{
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png_chunk_report(png_ptr, "iTXt chunk not supported",
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PNG_CHUNK_WRITE_ERROR);
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@ -831,6 +841,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
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{
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png_chunk_report(png_ptr, "text chunk: out of memory",
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PNG_CHUNK_WRITE_ERROR);
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return 1;
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}
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@ -904,6 +915,7 @@ png_set_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
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mod_time->second > 60)
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{
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png_warning(png_ptr, "Ignoring invalid time value");
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return;
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}
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@ -920,6 +932,7 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
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png_debug1(1, "in %s storage function", "tRNS");
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if (png_ptr == NULL || info_ptr == NULL)
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return;
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if (trans_alpha != NULL)
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@ -945,9 +958,10 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
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if (trans_color != NULL)
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{
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#ifdef PNG_WARNINGS_SUPPORTED
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if (info_ptr->bit_depth < 16)
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{
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unsigned int sample_max = (1U << info_ptr->bit_depth) - 1U;
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int sample_max = (1 << info_ptr->bit_depth) - 1;
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if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
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trans_color->gray > sample_max) ||
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@ -958,11 +972,12 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
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png_warning(png_ptr,
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"tRNS chunk has out-of-range samples for bit_depth");
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}
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#endif
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info_ptr->trans_color = *trans_color;
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if (num_trans == 0)
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num_trans = 1;
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info_ptr->trans_color = *trans_color;
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}
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info_ptr->num_trans = (png_uint_16)num_trans;
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@ -1004,6 +1019,7 @@ png_set_sPLT(png_const_structrp png_ptr,
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{
|
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/* Out of memory or too many chunks */
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png_chunk_report(png_ptr, "too many sPLT chunks", PNG_CHUNK_WRITE_ERROR);
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return;
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}
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|
||||
@ -1133,6 +1149,7 @@ png_set_unknown_chunks(png_const_structrp png_ptr,
|
||||
if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0)
|
||||
{
|
||||
png_app_error(png_ptr, "no unknown chunk support on read");
|
||||
|
||||
return;
|
||||
}
|
||||
# endif
|
||||
@ -1141,6 +1158,7 @@ png_set_unknown_chunks(png_const_structrp png_ptr,
|
||||
if ((png_ptr->mode & PNG_IS_READ_STRUCT) == 0)
|
||||
{
|
||||
png_app_error(png_ptr, "no unknown chunk support on write");
|
||||
|
||||
return;
|
||||
}
|
||||
# endif
|
||||
@ -1158,6 +1176,7 @@ png_set_unknown_chunks(png_const_structrp png_ptr,
|
||||
{
|
||||
png_chunk_report(png_ptr, "too many unknown chunks",
|
||||
PNG_CHUNK_WRITE_ERROR);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
@ -1267,6 +1286,7 @@ add_one_chunk(png_bytep list, unsigned int count, png_const_bytep add, int keep)
|
||||
if (memcmp(list, add, 4) == 0)
|
||||
{
|
||||
list[4] = (png_byte)keep;
|
||||
|
||||
return count;
|
||||
}
|
||||
}
|
||||
@ -1294,6 +1314,7 @@ png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
|
||||
if (keep < 0 || keep >= PNG_HANDLE_CHUNK_LAST)
|
||||
{
|
||||
png_app_error(png_ptr, "png_set_keep_unknown_chunks: invalid keep");
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
@ -1343,6 +1364,7 @@ png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
|
||||
* which can be switched off.
|
||||
*/
|
||||
png_app_error(png_ptr, "png_set_keep_unknown_chunks: no chunk list");
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
@ -1358,6 +1380,7 @@ png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
|
||||
if (num_chunks + old_num_chunks > UINT_MAX/5)
|
||||
{
|
||||
png_app_error(png_ptr, "png_set_keep_unknown_chunks: too many chunks");
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
@ -1495,23 +1518,27 @@ png_set_compression_buffer_size(png_structrp png_ptr, png_size_t size)
|
||||
{
|
||||
png_warning(png_ptr,
|
||||
"Compression buffer size cannot be changed because it is in use");
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
#ifndef __COVERITY__
|
||||
if (size > ZLIB_IO_MAX)
|
||||
{
|
||||
png_warning(png_ptr,
|
||||
"Compression buffer size limited to system maximum");
|
||||
size = ZLIB_IO_MAX; /* must fit */
|
||||
}
|
||||
#endif
|
||||
|
||||
else if (size < 6)
|
||||
if (size < 6)
|
||||
{
|
||||
/* Deflate will potentially go into an infinite loop on a SYNC_FLUSH
|
||||
* if this is permitted.
|
||||
*/
|
||||
png_warning(png_ptr,
|
||||
"Compression buffer size cannot be reduced below 6");
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user