Signedness revisions. This eliminates explicit casting by switching to unsigned fields. The revisions mostly impact the handling of CID fonts. * include/freetype/fttypes.h (FT_Data): Change to unsigned `length`. * include/freetype/t1tables.h (CID_FaceDictRec): Ditto for `sd_bytes`. (CID_FaceInfoRec): Ditto for `gd_bytes` and `gd_bytes`. * include/freetype/internal/tttypes.h (TT_LoaderRec): Ditto for `byte_len`. * src/cid/cidgload.c (cid_load_glyph): Updated. * src/cid/cidload.h (cid_get_offset): Update argument. * src/cid/cidload.c (cid_get_offset, cid_read_subrs, cid_face_open): Updated. * src/cff/cffgload.c (cff_get_glyph_data, cff_free_glyph_data): Updated. * src/psaux/psft.c (cf2_getT1SeacComponent): Updated. * src/truetype/ttgload.c (TT_Process_Composite_Glyph, load_truetype_glyph): Updated.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343
diff --git a/docs/CHANGES b/docs/CHANGES
index 7dab3e7..9588451 100644
--- a/docs/CHANGES
+++ b/docs/CHANGES
@@ -1,3 +1,15 @@
+CHANGES BETWEEN 2.11.0 and 2.11.1
+
+ I. IMPORTANT CHANGES
+
+ - Some fields in the `CID_FaceDictRec`, `CID_FaceInfoRec`, and
+ `FT_Data` structures have been changed from signed to unsigned
+ type, which better reflects the actual usage. It is also an
+ additional means to protect against malformed input.
+
+
+======================================================================
+
CHANGES BETWEEN 2.10.4 and 2.11.0
I. IMPORTANT CHANGES
diff --git a/include/freetype/fttypes.h b/include/freetype/fttypes.h
index d5ca1c4..37f7353 100644
--- a/include/freetype/fttypes.h
+++ b/include/freetype/fttypes.h
@@ -413,7 +413,7 @@ FT_BEGIN_HEADER
typedef struct FT_Data_
{
const FT_Byte* pointer;
- FT_Int length;
+ FT_UInt length;
} FT_Data;
diff --git a/include/freetype/internal/tttypes.h b/include/freetype/internal/tttypes.h
index d0e9eeb..651131c 100644
--- a/include/freetype/internal/tttypes.h
+++ b/include/freetype/internal/tttypes.h
@@ -1734,7 +1734,7 @@ FT_BEGIN_HEADER
FT_UInt glyph_index;
FT_Stream stream;
- FT_Int byte_len;
+ FT_UInt byte_len;
FT_Short n_contours;
FT_BBox bbox;
diff --git a/include/freetype/t1tables.h b/include/freetype/t1tables.h
index 546ec1c..1f5bc15 100644
--- a/include/freetype/t1tables.h
+++ b/include/freetype/t1tables.h
@@ -360,7 +360,7 @@ FT_BEGIN_HEADER
FT_UInt num_subrs;
FT_ULong subrmap_offset;
- FT_Int sd_bytes;
+ FT_UInt sd_bytes;
} CID_FaceDictRec;
@@ -415,8 +415,8 @@ FT_BEGIN_HEADER
FT_ULong xuid[16];
FT_ULong cidmap_offset;
- FT_Int fd_bytes;
- FT_Int gd_bytes;
+ FT_UInt fd_bytes;
+ FT_UInt gd_bytes;
FT_ULong cid_count;
FT_Int num_dicts;
diff --git a/src/cff/cffgload.c b/src/cff/cffgload.c
index 831b3ae..97e8f9c 100644
--- a/src/cff/cffgload.c
+++ b/src/cff/cffgload.c
@@ -59,7 +59,7 @@
*pointer = (FT_Byte*)data.pointer;
- *length = (FT_ULong)data.length;
+ *length = data.length;
return error;
}
@@ -94,7 +94,7 @@
data.pointer = *pointer;
- data.length = (FT_Int)length;
+ data.length = (FT_UInt)length;
face->root.internal->incremental_interface->funcs->free_glyph_data(
face->root.internal->incremental_interface->object, &data );
diff --git a/src/cid/cidgload.c b/src/cid/cidgload.c
index bd0a7e7..e3e6832 100644
--- a/src/cid/cidgload.c
+++ b/src/cid/cidgload.c
@@ -63,7 +63,7 @@
#endif
- FT_TRACE1(( "cid_load_glyph: glyph index %d\n", glyph_index ));
+ FT_TRACE1(( "cid_load_glyph: glyph index %u\n", glyph_index ));
#ifdef FT_CONFIG_OPTION_INCREMENTAL
@@ -80,11 +80,11 @@
goto Exit;
p = (FT_Byte*)glyph_data.pointer;
- fd_select = cid_get_offset( &p, (FT_Byte)cid->fd_bytes );
+ fd_select = cid_get_offset( &p, cid->fd_bytes );
if ( glyph_data.length != 0 )
{
- glyph_length = (FT_ULong)( glyph_data.length - cid->fd_bytes );
+ glyph_length = glyph_data.length - cid->fd_bytes;
if ( !FT_QALLOC( charstring, glyph_length ) )
FT_MEM_COPY( charstring, glyph_data.pointer + cid->fd_bytes,
@@ -104,7 +104,7 @@
/* For ordinary fonts read the CID font dictionary index */
/* and charstring offset from the CIDMap. */
{
- FT_UInt entry_len = (FT_UInt)( cid->fd_bytes + cid->gd_bytes );
+ FT_UInt entry_len = cid->fd_bytes + cid->gd_bytes;
FT_ULong off1, off2;
@@ -114,10 +114,10 @@
goto Exit;
p = (FT_Byte*)stream->cursor;
- fd_select = cid_get_offset( &p, (FT_Byte)cid->fd_bytes );
- off1 = cid_get_offset( &p, (FT_Byte)cid->gd_bytes );
+ fd_select = cid_get_offset( &p, cid->fd_bytes );
+ off1 = cid_get_offset( &p, cid->gd_bytes );
p += cid->fd_bytes;
- off2 = cid_get_offset( &p, (FT_Byte)cid->gd_bytes );
+ off2 = cid_get_offset( &p, cid->gd_bytes );
FT_FRAME_EXIT();
if ( fd_select >= (FT_ULong)cid->num_dicts ||
diff --git a/src/cid/cidload.c b/src/cid/cidload.c
index 768509a..ed5fb1a 100644
--- a/src/cid/cidload.c
+++ b/src/cid/cidload.c
@@ -41,7 +41,7 @@
/* read a single offset */
FT_LOCAL_DEF( FT_ULong )
cid_get_offset( FT_Byte* *start,
- FT_Byte offsize )
+ FT_UInt offsize )
{
FT_ULong result;
FT_Byte* p = *start;
@@ -275,7 +275,7 @@
if ( (FT_ULong)num_dicts > stream->size / 100 )
{
FT_TRACE0(( "parse_fd_array: adjusting FDArray size"
- " (from %ld to %ld)\n",
+ " (from %ld to %lu)\n",
num_dicts,
stream->size / 100 ));
num_dicts = (FT_Long)( stream->size / 100 );
@@ -560,12 +560,12 @@
/* read the subrmap's offsets */
if ( FT_STREAM_SEEK( cid->data_offset + dict->subrmap_offset ) ||
- FT_FRAME_ENTER( ( num_subrs + 1 ) * (FT_UInt)dict->sd_bytes ) )
+ FT_FRAME_ENTER( ( num_subrs + 1 ) * dict->sd_bytes ) )
goto Fail;
p = (FT_Byte*)stream->cursor;
for ( count = 0; count <= num_subrs; count++ )
- offsets[count] = cid_get_offset( &p, (FT_Byte)dict->sd_bytes );
+ offsets[count] = cid_get_offset( &p, dict->sd_bytes );
FT_FRAME_EXIT();
@@ -805,7 +805,7 @@
face->root.stream->size - parser->data_offset )
{
FT_TRACE0(( "cid_face_open: adjusting length of binary data\n" ));
- FT_TRACE0(( " (from %ld to %ld bytes)\n",
+ FT_TRACE0(( " (from %lu to %lu bytes)\n",
parser->binary_length,
face->root.stream->size - parser->data_offset ));
parser->binary_length = face->root.stream->size -
@@ -833,10 +833,10 @@
/* sanity tests */
- if ( cid->fd_bytes < 0 || cid->gd_bytes < 1 )
+ if ( cid->gd_bytes == 0 )
{
FT_ERROR(( "cid_face_open:"
- " Invalid `FDBytes' or `GDBytes' value\n" ));
+ " Invalid `GDBytes' value\n" ));
error = FT_THROW( Invalid_File_Format );
goto Exit;
}
@@ -853,7 +853,7 @@
}
binary_length = face->cid_stream->size - cid->data_offset;
- entry_len = (FT_ULong)( cid->fd_bytes + cid->gd_bytes );
+ entry_len = cid->fd_bytes + cid->gd_bytes;
for ( n = 0; n < cid->num_dicts; n++ )
{
@@ -879,8 +879,7 @@
dict->private_dict.blue_fuzz = 1;
}
- if ( dict->sd_bytes < 0 ||
- ( dict->num_subrs && dict->sd_bytes < 1 ) )
+ if ( dict->num_subrs && dict->sd_bytes == 0 )
{
FT_ERROR(( "cid_face_open: Invalid `SDBytes' value\n" ));
error = FT_THROW( Invalid_File_Format );
@@ -907,7 +906,7 @@
if ( (FT_Int)dict->num_subrs < 0 ||
( dict->sd_bytes &&
dict->num_subrs > ( binary_length - dict->subrmap_offset ) /
- (FT_UInt)dict->sd_bytes ) )
+ dict->sd_bytes ) )
{
FT_ERROR(( "cid_face_open: Invalid `SubrCount' value\n" ));
error = FT_THROW( Invalid_File_Format );
diff --git a/src/cid/cidload.h b/src/cid/cidload.h
index 456685c..ee1d486 100644
--- a/src/cid/cidload.h
+++ b/src/cid/cidload.h
@@ -37,7 +37,7 @@ FT_BEGIN_HEADER
FT_LOCAL( FT_ULong )
cid_get_offset( FT_Byte** start,
- FT_Byte offsize );
+ FT_UInt offsize );
FT_LOCAL( FT_Error )
cid_face_open( CID_Face face,
diff --git a/src/psaux/psft.c b/src/psaux/psft.c
index 41c1654..ac72d82 100644
--- a/src/psaux/psft.c
+++ b/src/psaux/psft.c
@@ -742,13 +742,13 @@
/* For ordinary fonts get the character data stored in the face record. */
{
glyph_data.pointer = type1->charstrings[glyph_index];
- glyph_data.length = (FT_Int)type1->charstrings_len[glyph_index];
+ glyph_data.length = type1->charstrings_len[glyph_index];
}
if ( !error )
{
FT_Byte* charstring_base = (FT_Byte*)glyph_data.pointer;
- FT_ULong charstring_len = (FT_ULong)glyph_data.length;
+ FT_ULong charstring_len = glyph_data.length;
FT_ASSERT( charstring_base + charstring_len >= charstring_base );
@@ -778,7 +778,7 @@
face = (T1_Face)decoder->builder.face;
data.pointer = buf->start;
- data.length = (FT_Int)( buf->end - buf->start );
+ data.length = (FT_UInt)( buf->end - buf->start );
if ( face->root.internal->incremental_interface )
face->root.internal->incremental_interface->funcs->free_glyph_data(
diff --git a/src/truetype/ttgload.c b/src/truetype/ttgload.c
index bb948e4..9136c17 100644
--- a/src/truetype/ttgload.c
+++ b/src/truetype/ttgload.c
@@ -1392,7 +1392,7 @@
FT_READ_USHORT( n_ins ) )
return error;
- FT_TRACE5(( " Instructions size = %d\n", n_ins ));
+ FT_TRACE5(( " Instructions size = %hu\n", n_ins ));
/* check it */
max_ins = loader->face->max_profile.maxSizeOfInstructions;
@@ -1400,10 +1400,10 @@
{
/* don't trust `maxSizeOfInstructions'; */
/* only do a rough safety check */
- if ( (FT_Int)n_ins > loader->byte_len )
+ if ( n_ins > loader->byte_len )
{
FT_TRACE1(( "TT_Process_Composite_Glyph:"
- " too many instructions (%d) for glyph with length %d\n",
+ " too many instructions (%hu) for glyph with length %u\n",
n_ins, loader->byte_len ));
return FT_THROW( Too_Many_Hints );
}
@@ -1686,7 +1686,7 @@
FT_ZERO( &inc_stream );
FT_Stream_OpenMemory( &inc_stream,
glyph_data.pointer,
- (FT_ULong)glyph_data.length );
+ glyph_data.length );
loader->stream = &inc_stream;
}
@@ -1694,8 +1694,7 @@
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
- offset = tt_face_get_location( face, glyph_index,
- (FT_UInt*)&loader->byte_len );
+ offset = tt_face_get_location( face, glyph_index, &loader->byte_len );
if ( loader->byte_len > 0 )
{
@@ -1714,7 +1713,7 @@
error = face->access_glyph_frame( loader, glyph_index,
face->glyf_offset + offset,
- (FT_UInt)loader->byte_len );
+ loader->byte_len );
if ( error )
goto Exit;
@@ -1849,7 +1848,7 @@
/* (which consists of 10 bytes) */
error = face->access_glyph_frame( loader, glyph_index,
face->glyf_offset + offset + 10,
- (FT_UInt)loader->byte_len - 10 );
+ loader->byte_len - 10 );
if ( error )
goto Exit;
@@ -2105,7 +2104,7 @@
FT_UInt num_base_subgs = gloader->base.num_subglyphs;
FT_Stream old_stream = loader->stream;
- FT_Int old_byte_len = loader->byte_len;
+ FT_UInt old_byte_len = loader->byte_len;
FT_GlyphLoader_Add( gloader );