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Fix Savannah bug #41309. 

* src/type1/t1load.c (t1_parse_font_matrix): Properly handle result
of `T1_ToFixedArray'.

* src/cid/cidload.c (cid_parse_font_matrix): Synchronize with
`t1_parse_font_matrix'.

* src/type42/t42parse.c (t42_parse_font_matrix): Synchronize with
`t1_parse_font_matrix'.
(t42_parse_encoding): Synchronize with `t1_parse_encoding'.

* src/psaux/psobjs.c (ps_parser_load_field) <T1_FIELD_TYPE_BBOX>,
<T1_FIELD_TYPE_MMOX>: Properly handle result of `ps_tofixedarray'.
This commit is contained in:
Werner Lemberg 2014-01-23 08:14:53 +01:00
parent 039f049656
commit 8b281f83e8
5 changed files with 76 additions and 22 deletions
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17
ChangeLog
View File

@ -1,3 +1,20 @@
2014-01-23 Werner Lemberg <wl@gnu.org>
Fix Savannah bug #41309.
* src/type1/t1load.c (t1_parse_font_matrix): Properly handle result
of `T1_ToFixedArray'.
* src/cid/cidload.c (cid_parse_font_matrix): Synchronize with
`t1_parse_font_matrix'.
* src/type42/t42parse.c (t42_parse_font_matrix): Synchronize with
`t1_parse_font_matrix'.
(t42_parse_encoding): Synchronize with `t1_parse_encoding'.
* src/psaux/psobjs.c (ps_parser_load_field) <T1_FIELD_TYPE_BBOX>,
<T1_FIELD_TYPE_MMOX>: Properly handle result of `ps_tofixedarray'.
2014-01-22 Werner Lemberg <wl@gnu.org>
* src/autofit/hbshim.c (af_get_coverage): Fix memory leaks.

19
src/cid/cidload.c
View File

@ -4,7 +4,7 @@
/* */
/* CID-keyed Type1 font loader (body). */
/* */
/* Copyright 1996-2006, 2009, 2011-2013 by */
/* Copyright 1996-2006, 2009, 2011-2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -160,16 +160,26 @@
{
FT_Matrix* matrix;
FT_Vector* offset;
FT_Int result;
dict = face->cid.font_dicts + parser->num_dict;
matrix = &dict->font_matrix;
offset = &dict->font_offset;
(void)cid_parser_to_fixed_array( parser, 6, temp, 3 );
result = cid_parser_to_fixed_array( parser, 6, temp, 3 );
if ( result < 6 )
return FT_THROW( Invalid_File_Format );
temp_scale = FT_ABS( temp[3] );
if ( temp_scale == 0 )
{
FT_ERROR(( "cid_parse_font_matrix: invalid font matrix\n" ));
return FT_THROW( Invalid_File_Format );
}
/* Set Units per EM based on FontMatrix values. We set the value to */
/* 1000 / temp_scale, because temp_scale was already multiplied by */
/* 1000 (in t1_tofixed, from psobjs.c). */
@ -184,7 +194,7 @@
temp[2] = FT_DivFix( temp[2], temp_scale );
temp[4] = FT_DivFix( temp[4], temp_scale );
temp[5] = FT_DivFix( temp[5], temp_scale );
temp[3] = 0x10000L;
temp[3] = temp[3] < 0 ? -0x10000L : 0x10000L;
}
matrix->xx = temp[0];
@ -197,8 +207,7 @@
offset->y = temp[5] >> 16;
}
return FT_Err_Ok; /* this is a callback function; */
/* we must return an error code */
return FT_Err_Ok;
}

8
src/psaux/psobjs.c
View File

@ -4,7 +4,7 @@
/* */
/* Auxiliary functions for PostScript fonts (body). */
/* */
/* Copyright 1996-2013 by */
/* Copyright 1996-2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -847,6 +847,8 @@
/* first character must be a delimiter or a part of a number */
/* NB: `values' can be NULL if we just want to skip the */
/* array; in this case we ignore `max_values' */
/* */
/* return number of successfully parsed values */
static FT_Int
ps_tofixedarray( FT_Byte* *acur,
@ -1200,7 +1202,7 @@
result = ps_tofixedarray( &cur, limit, 4, temp, 0 );
if ( result < 0 )
if ( result < 4 )
{
FT_ERROR(( "ps_parser_load_field:"
" expected four integers in bounding box\n" ));
@ -1230,7 +1232,7 @@
{
result = ps_tofixedarray( &cur, limit, max_objects,
temp + i * max_objects, 0 );
if ( result < 0 )
if ( result < 0 || (FT_UInt)result < max_objects )
{
FT_ERROR(( "ps_parser_load_field:"
" expected %d integers in the %s subarray\n"

4
src/type1/t1load.c
View File

@ -4,7 +4,7 @@
/* */
/* Type 1 font loader (body). */
/* */
/* Copyright 1996-2013 by */
/* Copyright 1996-2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -1107,7 +1107,7 @@
result = T1_ToFixedArray( parser, 6, temp, 3 );
if ( result < 0 )
if ( result < 6 )
{
parser->root.error = FT_THROW( Invalid_File_Format );
return;

50
src/type42/t42parse.c
View File

@ -4,7 +4,7 @@
/* */
/* Type 42 font parser (body). */
/* */
/* Copyright 2002-2013 by */
/* Copyright 2002-2014 by */
/* Roberto Alameda. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -255,12 +255,26 @@
FT_Face root = (FT_Face)&face->root;
FT_Fixed temp[6];
FT_Fixed temp_scale;
FT_Int result;
(void)T1_ToFixedArray( parser, 6, temp, 3 );
result = T1_ToFixedArray( parser, 6, temp, 3 );
if ( result < 6 )
{
parser->root.error = FT_THROW( Invalid_File_Format );
return;
}
temp_scale = FT_ABS( temp[3] );
if ( temp_scale == 0 )
{
FT_ERROR(( "t1_parse_font_matrix: invalid font matrix\n" ));
parser->root.error = FT_THROW( Invalid_File_Format );
return;
}
/* Set Units per EM based on FontMatrix values. We set the value to */
/* 1000 / temp_scale, because temp_scale was already multiplied by */
/* 1000 (in t1_tofixed, from psobjs.c). */
@ -275,7 +289,7 @@
temp[2] = FT_DivFix( temp[2], temp_scale );
temp[4] = FT_DivFix( temp[4], temp_scale );
temp[5] = FT_DivFix( temp[5], temp_scale );
temp[3] = 0x10000L;
temp[3] = temp[3] < 0 ? -0x10000L : 0x10000L;
}
matrix->xx = temp[0];
@ -314,7 +328,7 @@
if ( ft_isdigit( *cur ) || *cur == '[' )
{
T1_Encoding encode = &face->type1.encoding;
FT_UInt count, n;
FT_Int count, n;
PS_Table char_table = &loader->encoding_table;
FT_Memory memory = parser->root.memory;
FT_Error error;
@ -329,7 +343,7 @@
parser->root.cursor++;
}
else
count = (FT_UInt)T1_ToInt( parser );
count = (FT_Int)T1_ToInt( parser );
T1_Skip_Spaces( parser );
if ( parser->root.cursor >= limit )
@ -417,7 +431,7 @@
cur = parser->root.cursor;
if ( *cur == '/' && cur + 2 < limit && n < count )
if ( cur + 2 < limit && *cur == '/' && n < count )
{
FT_PtrDist len;
@ -426,6 +440,8 @@
parser->root.cursor = cur;
T1_Skip_PS_Token( parser );
if ( parser->root.cursor >= limit )
return;
if ( parser->root.error )
return;
@ -439,6 +455,19 @@
n++;
}
else if ( only_immediates )
{
/* Since the current position is not updated for */
/* immediates-only mode we would get an infinite loop if */
/* we don't do anything here. */
/* */
/* This encoding array is not valid according to the type1 */
/* specification (it might be an encoding for a CID type1 */
/* font, however), so we conclude that this font is NOT a */
/* type1 font. */
parser->root.error = FT_THROW( Unknown_File_Format );
return;
}
}
else
{
@ -450,8 +479,8 @@
T1_Skip_Spaces( parser );
}
face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY;
parser->root.cursor = cur;
face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY;
parser->root.cursor = cur;
}
/* Otherwise, we should have either `StandardEncoding', */
@ -471,10 +500,7 @@
face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1;
else
{
FT_ERROR(( "t42_parse_encoding: invalid token\n" ));
parser->root.error = FT_THROW( Invalid_File_Format );
}
parser->root.error = FT_THROW( Ignore );
}
}