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[libpng16] Eliminated PNG_SAFE_LIMITS macro and restored the 1-million-column

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and 1-million-row default limits in pnglibconf.dfa, that can be reset
by the user at build time or run time.  This provides a more robust
defense against DOS and as-yet undiscovered overflows.

Display user limits in the output from pngtest.
This commit is contained in:
Glenn Randers-Pehrson
2015-02-16 22:52:07 -06:00
parent 471b38aa00
commit 4b65a89cf4
7 changed files with 65 additions and 91 deletions
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8
scripts/pnglibconf.h.prebuilt
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@@ -2,7 +2,7 @@
/* pnglibconf.h - library build configuration */
/* Libpng version 1.6.17beta03 - February 7, 2015 */
/* Libpng version 1.6.17beta03 - February 17, 2015 */
/* Copyright (c) 1998-2014 Glenn Randers-Pehrson */
@@ -97,7 +97,6 @@
#define PNG_READ_tIME_SUPPORTED
#define PNG_READ_tRNS_SUPPORTED
#define PNG_READ_zTXt_SUPPORTED
/*#undef PNG_SAFE_LIMITS_SUPPORTED*/
#define PNG_SAVE_INT_32_SUPPORTED
#define PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
#define PNG_SEQUENTIAL_READ_SUPPORTED
@@ -129,6 +128,7 @@
#define PNG_WRITE_BGR_SUPPORTED
#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
#define PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
#define PNG_WRITE_FILLER_SUPPORTED
#define PNG_WRITE_FILTER_SUPPORTED
@@ -198,6 +198,10 @@
#define PNG_QUANTIZE_RED_BITS 5
#define PNG_TEXT_Z_DEFAULT_COMPRESSION (-1)
#define PNG_TEXT_Z_DEFAULT_STRATEGY 0
#define PNG_USER_CHUNK_CACHE_MAX 1000 /* Use 0 for unlimited */
#define PNG_USER_CHUNK_MALLOC_MAX 8000000 /* Use 0 for unlimited */
#define PNG_USER_HEIGHT_MAX 1000000 /* Use 0x7fffffff for unlimited */
#define PNG_USER_WIDTH_MAX 1000000 /* Use 0x7fffffff for unlimited */
#define PNG_WEIGHT_SHIFT 8
#define PNG_ZBUF_SIZE 8192
#define PNG_ZLIB_VERNUM 0 /* unknown */