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Code Issues 4 Releases Wiki Activity

In function T1_Decoder_Parse_Charstrings, take into account lenIV seed 

bytes at the start of a decrypted subroutine.
This commit is contained in:
Tom Kacvinsky 2001-03-12 01:42:38 +00:00
parent 459d7e660f
commit cf5a841218
1 changed files with 15 additions and 6 deletions
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21
src/psaux/t1decode.c
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@ -492,10 +492,10 @@
goto Syntax_Error;
}
if ( ip[-2] < 251 )
value = ( ( (FT_Long)ip[-2] - 247 ) << 8 ) + ip[-1] + 108;
else
value = -( ( ( (FT_Long)ip[-2] - 251 ) << 8 ) + ip[-1] + 108 );
if ( ip[-2] < 251 )
value = ( ( (FT_Long)ip[-2] - 247 ) << 8 ) + ip[-1] + 108;
else
value = -( ( ( (FT_Long)ip[-2] - 251 ) << 8 ) + ip[-1] + 108 );
}
}
else
@ -907,12 +907,21 @@
zone->cursor = ip; /* save current instruction pointer */
zone++;
zone->base = decoder->subrs[index] + decoder->lenIV;
/* The Type 1 driver stores subroutines without the seed bytes. */
/* The CID driver stores subroutines with seed bytes. This case */
/* is taken care of when decoder->subrs_len == 0. */
zone->base = decoder->subrs[index];
if (decoder->subrs_len)
zone->limit = zone->base + decoder->subrs_len[index];
else
zone->limit = decoder->subrs[index+1];
{
/* We are using subroutines from a CID font. We must adjust */
/* for the seed bytes. */
zone->base += ( decoder->lenIV >= 0 ? decoder->lenIV : 0 );
zone->limit = decoder->subrs[index + 1];
}
zone->cursor = zone->base;