mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

[libpng15] Added information about the new limits in the manual.

Browse Source
This commit is contained in:
Glenn Randers-Pehrson 2012-02-23 23:35:29 -06:00
parent f97ed91ead
commit b27c862b14
4 changed files with 38 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
ANNOUNCE
View File

@ -41,6 +41,10 @@ Version 1.5.10beta01 [February 24, 2012]
or put #define PNG_SAFE_LIMITS_SUPPORTED in pnglibconf.h.
Version 1.5.10beta02 [February 24, 2012]
Revised pngconf.h to always set the "safe" limits when
PNG_SAFE_LIMITS_SUPPORTED is defined, even if pnglibconf.h has
been edited to remove the limit definitions.
Added information about the new limits in the manual.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
(subscription required; visit

4
CHANGES
View File

@ -3826,6 +3826,10 @@ Version 1.5.10beta01 [February 24, 2012]
or put #define PNG_SAFE_LIMITS_SUPPORTED in pnglibconf.h.
Version 1.5.10beta02 [February 24, 2012]
Revised pngconf.h to always set the "safe" limits when
PNG_SAFE_LIMITS_SUPPORTED is defined, even if pnglibconf.h has
been edited to remove the limit definitions.
Added information about the new limits in the manual.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

15
libpng-manual.txt
View File

@ -4260,6 +4260,21 @@ PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
that it could be used to override them. Now this function will reduce or
increase the limits.
Starting in libpng-1.5.10, the user limits can be set en masse with the
configuration option PNG_SAFE_LIMITS. If this option is enabled, then
the limits in pnglibconf.h are ignored and a set of "safe" limits is
applied in pngconf.h. These can be overridden by application calls
to png_set_user_limits(), png_set_user_chunk_cache_max(), and/or
png_set_user_malloc_max() that increase or decrease the limits. Also,
in libpng-1.5.10 the default width and height limits were increased
from 1,000,000 to 0x7ffffff (i.e., made unlimited). Therefore, the
limits are now
default safe
png_user_width_max 0x7fffffff 1,000,000
png_user_height_max 0x7fffffff 1,000,000
png_user_chunk_cache_max 0 (unlimited) 128
png_user_chunk_malloc_max 0 (unlimited) 4,000,000
B. Changes to the build and configuration of libpng
Details of internal changes to the library code can be found in the CHANGES

15
libpng.3
View File

@ -5238,6 +5238,21 @@ PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
that it could be used to override them. Now this function will reduce or
increase the limits.
Starting in libpng-1.5.10, the user limits can be set en masse with the
configuration option PNG_SAFE_LIMITS. If this option is enabled, then
the limits in pnglibconf.h are ignored and a set of "safe" limits is
applied in pngconf.h. These can be overridden by application calls
to png_set_user_limits(), png_set_user_chunk_cache_max(), and/or
png_set_user_malloc_max() that increase or decrease the limits. Also,
in libpng-1.5.10 the default width and height limits were increased
from 1,000,000 to 0x7ffffff (i.e., made unlimited). Therefore, the
limits are now
default safe
png_user_width_max 0x7fffffff 1,000,000
png_user_height_max 0x7fffffff 1,000,000
png_user_chunk_cache_max 0 (unlimited) 128
png_user_chunk_malloc_max 0 (unlimited) 4,000,000
B. Changes to the build and configuration of libpng
Details of internal changes to the library code can be found in the CHANGES