[ft-cvs] freetype2 ChangeLog src/pcf/pcfdrivr.c src/pcf/...

[Werner LEMBERG]

CVSROOT:        /cvsroot/freetype
Module name:    freetype2
Changes by:     Werner LEMBERG <wl>     06/07/08 21:31:24

Modified files:
        .              : ChangeLog 
        src/pcf        : pcfdrivr.c pcfread.c 

Log message:
        Add many checks to protect against malformed PCF files.
        
        * src/pcf/pcfdrivr.c (PCF_Face_Done): Protect against NULL pointers.
        (PCF_Face_Init): Add calls to PCF_Face_Done in case of errors.
        
        * src/pcf/pcfread.c (pcf_read_TOC): Protect against malformed table
        data and check that tables don't overlap (using a simple
        bubblesort).
        (PCF_METRIC_SIZE, PCF_COMPRESSED_METRIC_SIZE, PCF_PROPERTY_SIZE):
        New macros which give the size of data structures in the data
        stream.
        (pcf_get_properties): Use rough estimates to get array size limits.
        Assign `face->nprops' and `face->properties' earlier so that a call
        to PCF_Face_Done can do the clean-up in case of error.
        Protect against invalid string offsets.
        (pcf_get_metrics): Clean up code.
        Adjust tracing message levels.
        Use rough estimate to get array size limit.
        (pcf_get_bitmaps): Clean up code.
        Adjust tracing message levels.
        Use rough estimates to get offset limits.
        (pcf_get_encodings): Adjust tracing message level.
        (pcf_get_accel): Clean up code.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/freetype2/ChangeLog?cvsroot=freetype&r1=1.1357&r2=1.1358
http://cvs.savannah.gnu.org/viewcvs/freetype2/src/pcf/pcfdrivr.c?cvsroot=freetype&r1=1.26&r2=1.27
http://cvs.savannah.gnu.org/viewcvs/freetype2/src/pcf/pcfread.c?cvsroot=freetype&r1=1.56&r2=1.57