diff options
Diffstat (limited to 'src/cff/cf2intrp.c')
| -rw-r--r-- | src/cff/cf2intrp.c | 73 |
1 files changed, 53 insertions, 20 deletions
diff --git a/src/cff/cf2intrp.c b/src/cff/cf2intrp.c index 5610917..537e060 100644 --- a/src/cff/cf2intrp.c +++ b/src/cff/cf2intrp.c @@ -4,7 +4,7 @@ /* */ /* Adobe's CFF Interpreter (body). */ /* */ -/* Copyright 2007-2013 Adobe Systems Incorporated. */ +/* Copyright 2007-2014 Adobe Systems Incorporated. */ /* */ /* This software, and all works of authorship, whether in source or */ /* object code form as indicated by the copyright notice(s) included */ @@ -43,6 +43,7 @@ #include "cf2font.h" #include "cf2stack.h" #include "cf2hints.h" +#include "cf2intrp.h" #include "cf2error.h" @@ -593,8 +594,11 @@ /* never add hints after the mask is computed */ if ( cf2_hintmask_isValid( &hintMask ) ) + { FT_TRACE4(( "cf2_interpT2CharString:" " invalid horizontal hint mask\n" )); + break; + } cf2_doStems( font, opStack, @@ -614,8 +618,11 @@ /* never add hints after the mask is computed */ if ( cf2_hintmask_isValid( &hintMask ) ) + { FT_TRACE4(( "cf2_interpT2CharString:" " invalid vertical hint mask\n" )); + break; + } cf2_doStems( font, opStack, @@ -754,16 +761,19 @@ /* push our current CFF charstring region on subrStack */ charstring = (CF2_Buffer) - cf2_arrstack_getPointer( &subrStack, - charstringIndex + 1 ); + cf2_arrstack_getPointer( + &subrStack, + (size_t)charstringIndex + 1 ); /* set up the new CFF region and pointer */ - subrIndex = cf2_stack_popInt( opStack ); + subrIndex = (CF2_UInt)cf2_stack_popInt( opStack ); switch ( op1 ) { case cf2_cmdCALLGSUBR: - FT_TRACE4(( "(%d)\n", subrIndex + decoder->globals_bias )); + FT_TRACE4(( " (idx %d, entering level %d)\n", + subrIndex + (CF2_UInt)decoder->globals_bias, + charstringIndex + 1 )); if ( cf2_initGlobalRegionBuffer( decoder, subrIndex, @@ -776,7 +786,9 @@ default: /* cf2_cmdCALLSUBR */ - FT_TRACE4(( "(%d)\n", subrIndex + decoder->locals_bias )); + FT_TRACE4(( " (idx %d, entering level %d)\n", + subrIndex + (CF2_UInt)decoder->locals_bias, + charstringIndex + 1 )); if ( cf2_initLocalRegionBuffer( decoder, subrIndex, @@ -792,7 +804,7 @@ continue; /* do not clear the stack */ case cf2_cmdRETURN: - FT_TRACE4(( " return\n" )); + FT_TRACE4(( " return (leaving level %d)\n", charstringIndex )); if ( charstringIndex < 1 ) { @@ -803,8 +815,9 @@ /* restore position in previous charstring */ charstring = (CF2_Buffer) - cf2_arrstack_getPointer( &subrStack, - --charstringIndex ); + cf2_arrstack_getPointer( + &subrStack, + (CF2_UInt)--charstringIndex ); continue; /* do not clear the stack */ case cf2_cmdESC: @@ -1082,8 +1095,8 @@ /* must be either 4 or 5 -- */ /* this is a (deprecated) implied `seac' operator */ - CF2_UInt achar; - CF2_UInt bchar; + CF2_Int achar; + CF2_Int bchar; CF2_BufferRec component; CF2_Fixed dummyWidth; /* ignore component width */ FT_Error error2; @@ -1141,15 +1154,16 @@ /* `cf2_hintmask_read' (which also traces the mask bytes) */ FT_TRACE4(( op1 == cf2_cmdCNTRMASK ? " cntrmask" : " hintmask" )); - /* if there are arguments on the stack, there this is an */ - /* implied cf2_cmdVSTEMHM */ - if ( cf2_stack_count( opStack ) != 0 ) + /* never add hints after the mask is computed */ + if ( cf2_stack_count( opStack ) > 1 && + cf2_hintmask_isValid( &hintMask ) ) { - /* never add hints after the mask is computed */ - if ( cf2_hintmask_isValid( &hintMask ) ) - FT_TRACE4(( "cf2_interpT2CharString: invalid hint mask\n" )); + FT_TRACE4(( "cf2_interpT2CharString: invalid hint mask\n" )); + break; } + /* if there are arguments on the stack, there this is an */ + /* implied cf2_cmdVSTEMHM */ cf2_doStems( font, opStack, &vStemHintArray, @@ -1284,10 +1298,16 @@ case cf2_cmdVVCURVETO: { - CF2_UInt count = cf2_stack_count( opStack ); + CF2_UInt count, count1 = cf2_stack_count( opStack ); CF2_UInt index = 0; + /* if `cf2_stack_count' isn't of the form 4n or 4n+1, */ + /* we enforce it by clearing the second bit */ + /* (and sorting the stack indexing to suit) */ + count = count1 & ~2; + index += count1 - count; + FT_TRACE4(( " vvcurveto\n" )); while ( index < count ) @@ -1323,10 +1343,16 @@ case cf2_cmdHHCURVETO: { - CF2_UInt count = cf2_stack_count( opStack ); + CF2_UInt count, count1 = cf2_stack_count( opStack ); CF2_UInt index = 0; + /* if `cf2_stack_count' isn't of the form 4n or 4n+1, */ + /* we enforce it by clearing the second bit */ + /* (and sorting the stack indexing to suit) */ + count = count1 & ~2; + index += count1 - count; + FT_TRACE4(( " hhcurveto\n" )); while ( index < count ) @@ -1363,12 +1389,19 @@ case cf2_cmdVHCURVETO: case cf2_cmdHVCURVETO: { - CF2_UInt count = cf2_stack_count( opStack ); + CF2_UInt count, count1 = cf2_stack_count( opStack ); CF2_UInt index = 0; FT_Bool alternate = op1 == cf2_cmdHVCURVETO; + /* if `cf2_stack_count' isn't of the form 8n, 8n+1, */ + /* 8n+4, or 8n+5, we enforce it by clearing the */ + /* second bit */ + /* (and sorting the stack indexing to suit) */ + count = count1 & ~2; + index += count1 - count; + FT_TRACE4(( alternate ? " hvcurveto\n" : " vhcurveto\n" )); while ( index < count ) |