diff options
Diffstat (limited to 'scripts/pnglibconf.dfa')
| -rw-r--r-- | scripts/pnglibconf.dfa | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa index a740d6827..f06eb6685 100644 --- a/scripts/pnglibconf.dfa +++ b/scripts/pnglibconf.dfa @@ -27,7 +27,7 @@ file pnglibconf.h scripts/pnglibconf.dfa PNGLCONF_H # The syntax is detailed in scripts/options.awk, this is a summary # only: # -# setting <name> [requires ...] [default] +# setting <name> [default] # #define PNG_<name> <value> /* value comes from current setting */ # option <name> [requires ...] [if ...] [enables ...] [disabled] # #define PNG_<name>_SUPPORTED if the requirements are met and @@ -266,20 +266,22 @@ option SET_USER_LIMITS enables SET_CHUNK_CACHE_LIMIT option SET_USER_LIMITS enables SET_CHUNK_MALLOC_LIMIT -# Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter -# how large, set these two limits to 0x7fffffff - -setting USER_WIDTH_MAX default 1000000 -setting USER_HEIGHT_MAX default 1000000 - -# Added at libpng-1.2.43. To accept all valid PNGs no matter -# how large, set these two limits to 0. - -setting USER_CHUNK_CACHE_MAX default 0 - -# Added at libpng-1.2.43 - -setting USER_CHUNK_MALLOC_MAX default 0 +# Libpng limits. +# +# If these settings are *not* set libpng will not limit the size of +# images or the size of data in ancilliary chunks. This does lead to +# security issues if PNG files come from untrusted sources. +setting USER_WIDTH_MAX +setting USER_HEIGHT_MAX +setting USER_CHUNK_CACHE_MAX +setting USER_CHUNK_MALLOC_MAX + +# To default all these settings to values that are large but probably +# safe turn the SAFE_LIMITS option on; this will cause the value in +# pngpriv.h to be used. Individual values can also be set, simply set +# them in pngusr.dfa with '@#define PNG_setting value' lines. +option SAFE_LIMITS enables USER_LIMITS disabled += SAFE_LIMITS SAFE_LIMITS # All of the following options relate to code capabilities for # processing image data before creating a PNG or after reading one. @@ -576,3 +578,13 @@ option WRITE_COMPRESSED_TEXT enables WRITE_TEXT # leave the row_pointers member out of the info structure. option INFO_IMAGE + +# added at libpng-1.5.10 +# Turn this off to disable warning about invalid palette index and +# leave the num_palette_max member out of the png structure. + +option CHECK_FOR_INVALID_INDEX enables READ_CHECK_FOR_INVALID_INDEX +option CHECK_FOR_INVALID_INDEX enables WRITE_CHECK_FOR_INVALID_INDEX +option READ_CHECK_FOR_INVALID_INDEX requires READ CHECK_FOR_INVALID_INDEX +option WRITE_CHECK_FOR_INVALID_INDEX requires WRITE CHECK_FOR_INVALID_INDEX + |