diff options
author | Konstantin Ritt <ritt.ks@gmail.com> | 2015-03-19 17:34:42 +0400 |
---|---|---|
committer | Konstantin Ritt <ritt.ks@gmail.com> | 2015-03-20 13:42:29 +0000 |
commit | 2eaf0cf8fd6e7c290497fedb08134a89e7b49b1d (patch) | |
tree | 0a4f7bf528e87d0b0a71ce7fccf702b87f4cdec1 /src/3rdparty/freetype/src/pcf/pcfread.c | |
parent | 77c518a50334d4dcf2476a4f39edc1e3990c7f0b (diff) |
Update bundled FreeType to 2.5.5
Removed everything, imported with help of import_from_tarball.sh script,
and then added a pre-generated builds/unix/ftconfig.h
Task-number: QTBUG-44648
Change-Id: Iea948e41f7761f1580382b3763d04c7a61383382
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Diffstat (limited to 'src/3rdparty/freetype/src/pcf/pcfread.c')
-rw-r--r-- | src/3rdparty/freetype/src/pcf/pcfread.c | 260 |
1 files changed, 166 insertions, 94 deletions
diff --git a/src/3rdparty/freetype/src/pcf/pcfread.c b/src/3rdparty/freetype/src/pcf/pcfread.c index 08becf99ce..a29a9e371b 100644 --- a/src/3rdparty/freetype/src/pcf/pcfread.c +++ b/src/3rdparty/freetype/src/pcf/pcfread.c @@ -2,7 +2,7 @@ FreeType font driver for pcf fonts - Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by + Copyright 2000-2010, 2012-2014 by Francesco Zappa Nardelli Permission is hereby granted, free of charge, to any person obtaining a copy @@ -78,7 +78,7 @@ THE SOFTWARE. FT_FRAME_START( 16 ), FT_FRAME_ULONG_LE( type ), FT_FRAME_ULONG_LE( format ), - FT_FRAME_ULONG_LE( size ), + FT_FRAME_ULONG_LE( size ), /* rounded up to a multiple of 4 */ FT_FRAME_ULONG_LE( offset ), FT_FRAME_END }; @@ -92,21 +92,23 @@ THE SOFTWARE. PCF_Toc toc = &face->toc; PCF_Table tables; - FT_Memory memory = FT_FACE(face)->memory; + FT_Memory memory = FT_FACE( face )->memory; FT_UInt n; + FT_ULong size; - if ( FT_STREAM_SEEK ( 0 ) || - FT_STREAM_READ_FIELDS ( pcf_toc_header, toc ) ) - return PCF_Err_Cannot_Open_Resource; + + if ( FT_STREAM_SEEK( 0 ) || + FT_STREAM_READ_FIELDS( pcf_toc_header, toc ) ) + return FT_THROW( Cannot_Open_Resource ); if ( toc->version != PCF_FILE_VERSION || toc->count > FT_ARRAY_MAX( face->toc.tables ) || toc->count == 0 ) - return PCF_Err_Invalid_File_Format; + return FT_THROW( Invalid_File_Format ); if ( FT_NEW_ARRAY( face->toc.tables, toc->count ) ) - return PCF_Err_Out_Of_Memory; + return FT_THROW( Out_Of_Memory ); tables = face->toc.tables; for ( n = 0; n < toc->count; n++ ) @@ -144,13 +146,62 @@ THE SOFTWARE. if ( ( tables[i].size > tables[i + 1].offset ) || ( tables[i].offset > tables[i + 1].offset - tables[i].size ) ) - return PCF_Err_Invalid_Offset; + { + error = FT_THROW( Invalid_Offset ); + goto Exit; + } } if ( !have_change ) break; } + /* + * We now check whether the `size' and `offset' values are reasonable: + * `offset' + `size' must not exceed the stream size. + * + * Note, however, that X11's `pcfWriteFont' routine (used by the + * `bdftopcf' program to create PDF font files) has two special + * features. + * + * - It always assigns the accelerator table a size of 100 bytes in the + * TOC, regardless of its real size, which can vary between 34 and 72 + * bytes. + * + * - Due to the way the routine is designed, it ships out the last font + * table with its real size, ignoring the TOC's size value. Since + * the TOC size values are always rounded up to a multiple of 4, the + * difference can be up to three bytes for all tables except the + * accelerator table, for which the difference can be as large as 66 + * bytes. + * + */ + + tables = face->toc.tables; + size = stream->size; + + for ( n = 0; n < toc->count - 1; n++ ) + { + /* we need two checks to avoid overflow */ + if ( ( tables->size > size ) || + ( tables->offset > size - tables->size ) ) + { + error = FT_THROW( Invalid_Table ); + goto Exit; + } + tables++; + } + + /* only check `tables->offset' for last table element ... */ + if ( ( tables->offset > size ) ) + { + error = FT_THROW( Invalid_Table ); + goto Exit; + } + /* ... and adjust `tables->size' to the real value if necessary */ + if ( tables->size > size - tables->offset ) + tables->size = size - tables->offset; + #ifdef FT_DEBUG_LEVEL_TRACE { @@ -181,7 +232,7 @@ THE SOFTWARE. #endif - return PCF_Err_Ok; + return FT_Err_Ok; Exit: FT_FREE( face->toc.tables ); @@ -248,7 +299,7 @@ THE SOFTWARE. FT_ULong format, PCF_Metric metric ) { - FT_Error error = PCF_Err_Ok; + FT_Error error = FT_Err_Ok; if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) @@ -294,7 +345,7 @@ THE SOFTWARE. FT_ULong *aformat, FT_ULong *asize ) { - FT_Error error = PCF_Err_Invalid_File_Format; + FT_Error error = FT_ERR( Invalid_File_Format ); FT_ULong i; @@ -303,20 +354,20 @@ THE SOFTWARE. { if ( stream->pos > tables[i].offset ) { - error = PCF_Err_Invalid_Stream_Skip; + error = FT_THROW( Invalid_Stream_Skip ); goto Fail; } if ( FT_STREAM_SKIP( tables[i].offset - stream->pos ) ) { - error = PCF_Err_Invalid_Stream_Skip; + error = FT_THROW( Invalid_Stream_Skip ); goto Fail; } *asize = tables[i].size; *aformat = tables[i].format; - return PCF_Err_Ok; + return FT_Err_Ok; } Fail: @@ -398,11 +449,11 @@ THE SOFTWARE. PCF_Face face ) { PCF_ParseProperty props = 0; - PCF_Property properties; + PCF_Property properties = NULL; FT_ULong nprops, i; FT_ULong format, size; FT_Error error; - FT_Memory memory = FT_FACE(face)->memory; + FT_Memory memory = FT_FACE( face )->memory; FT_ULong string_size; FT_String* strings = 0; @@ -441,7 +492,7 @@ THE SOFTWARE. /* rough estimate */ if ( nprops > size / PCF_PROPERTY_SIZE ) { - error = PCF_Err_Invalid_Table; + error = FT_THROW( Invalid_Table ); goto Bail; } @@ -474,7 +525,7 @@ THE SOFTWARE. i = 4 - ( nprops & 3 ); if ( FT_STREAM_SKIP( i ) ) { - error = PCF_Err_Invalid_Stream_Skip; + error = FT_THROW( Invalid_Stream_Skip ); goto Bail; } } @@ -491,11 +542,12 @@ THE SOFTWARE. /* rough estimate */ if ( string_size > size - nprops * PCF_PROPERTY_SIZE ) { - error = PCF_Err_Invalid_Table; + error = FT_THROW( Invalid_Table ); goto Bail; } - if ( FT_NEW_ARRAY( strings, string_size ) ) + /* allocate one more byte so that we have a final null byte */ + if ( FT_NEW_ARRAY( strings, string_size + 1 ) ) goto Bail; error = FT_Stream_Read( stream, (FT_Byte*)strings, string_size ); @@ -515,7 +567,7 @@ THE SOFTWARE. if ( ( name_offset < 0 ) || ( (FT_ULong)name_offset > string_size ) ) { - error = PCF_Err_Invalid_Offset; + error = FT_THROW( Invalid_Offset ); goto Bail; } @@ -534,7 +586,7 @@ THE SOFTWARE. if ( ( value_offset < 0 ) || ( (FT_ULong)value_offset > string_size ) ) { - error = PCF_Err_Invalid_Offset; + error = FT_THROW( Invalid_Offset ); goto Bail; } @@ -551,7 +603,7 @@ THE SOFTWARE. } } - error = PCF_Err_Ok; + error = FT_Err_Ok; Bail: FT_FREE( props ); @@ -565,10 +617,10 @@ THE SOFTWARE. pcf_get_metrics( FT_Stream stream, PCF_Face face ) { - FT_Error error = PCF_Err_Ok; - FT_Memory memory = FT_FACE(face)->memory; + FT_Error error; + FT_Memory memory = FT_FACE( face )->memory; FT_ULong format, size; - PCF_Metric metrics = 0; + PCF_Metric metrics = 0; FT_ULong nmetrics, i; @@ -586,7 +638,7 @@ THE SOFTWARE. if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) && !PCF_FORMAT_MATCH( format, PCF_COMPRESSED_METRICS ) ) - return PCF_Err_Invalid_File_Format; + return FT_THROW( Invalid_File_Format ); if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) { @@ -603,10 +655,13 @@ THE SOFTWARE. (void)FT_READ_USHORT_LE( nmetrics ); } if ( error ) - return PCF_Err_Invalid_File_Format; + return FT_THROW( Invalid_File_Format ); face->nmetrics = nmetrics; + if ( !nmetrics ) + return FT_THROW( Invalid_Table ); + FT_TRACE4(( "pcf_get_metrics:\n" )); FT_TRACE4(( " number of metrics: %d\n", nmetrics )); @@ -615,36 +670,52 @@ THE SOFTWARE. if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) { if ( nmetrics > size / PCF_METRIC_SIZE ) - return PCF_Err_Invalid_Table; + return FT_THROW( Invalid_Table ); } else { if ( nmetrics > size / PCF_COMPRESSED_METRIC_SIZE ) - return PCF_Err_Invalid_Table; + return FT_THROW( Invalid_Table ); } if ( FT_NEW_ARRAY( face->metrics, nmetrics ) ) - return PCF_Err_Out_Of_Memory; + return FT_THROW( Out_Of_Memory ); metrics = face->metrics; - for ( i = 0; i < nmetrics; i++ ) + for ( i = 0; i < nmetrics; i++, metrics++ ) { - error = pcf_get_metric( stream, format, metrics + i ); + error = pcf_get_metric( stream, format, metrics ); - metrics[i].bits = 0; + metrics->bits = 0; FT_TRACE5(( " idx %d: width=%d, " "lsb=%d, rsb=%d, ascent=%d, descent=%d, swidth=%d\n", i, - ( metrics + i )->characterWidth, - ( metrics + i )->leftSideBearing, - ( metrics + i )->rightSideBearing, - ( metrics + i )->ascent, - ( metrics + i )->descent, - ( metrics + i )->attributes )); + metrics->characterWidth, + metrics->leftSideBearing, + metrics->rightSideBearing, + metrics->ascent, + metrics->descent, + metrics->attributes )); if ( error ) break; + + /* sanity checks -- those values are used in `PCF_Glyph_Load' to */ + /* compute a glyph's bitmap dimensions, thus setting them to zero in */ + /* case of an error disables this particular glyph only */ + if ( metrics->rightSideBearing < metrics->leftSideBearing || + metrics->ascent + metrics->descent < 0 ) + { + metrics->characterWidth = 0; + metrics->leftSideBearing = 0; + metrics->rightSideBearing = 0; + metrics->ascent = 0; + metrics->descent = 0; + + FT_TRACE0(( "pcf_get_metrics:" + " invalid metrics for glyph %d\n", i )); + } } if ( error ) @@ -659,9 +730,9 @@ THE SOFTWARE. pcf_get_bitmaps( FT_Stream stream, PCF_Face face ) { - FT_Error error = PCF_Err_Ok; - FT_Memory memory = FT_FACE(face)->memory; - FT_Long* offsets; + FT_Error error; + FT_Memory memory = FT_FACE( face )->memory; + FT_Long* offsets = NULL; FT_Long bitmapSizes[GLYPHPADOPTIONS]; FT_ULong format, size; FT_ULong nbitmaps, i, sizebitmaps = 0; @@ -689,15 +760,15 @@ THE SOFTWARE. FT_Stream_ExitFrame( stream ); if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) - return PCF_Err_Invalid_File_Format; + return FT_THROW( Invalid_File_Format ); FT_TRACE4(( "pcf_get_bitmaps:\n" )); FT_TRACE4(( " number of bitmaps: %d\n", nbitmaps )); - /* XXX: PCF_Face->nmetrics is singed FT_Long, see pcf.h */ - if ( face->nmetrics < 0 || nbitmaps != ( FT_ULong )face->nmetrics ) - return PCF_Err_Invalid_File_Format; + /* XXX: PCF_Face->nmetrics is signed FT_Long, see pcf.h */ + if ( face->nmetrics < 0 || nbitmaps != (FT_ULong)face->nmetrics ) + return FT_THROW( Invalid_File_Format ); if ( FT_NEW_ARRAY( offsets, nbitmaps ) ) return error; @@ -761,14 +832,14 @@ THE SOFTWARE. pcf_get_encodings( FT_Stream stream, PCF_Face face ) { - FT_Error error = PCF_Err_Ok; - FT_Memory memory = FT_FACE(face)->memory; + FT_Error error; + FT_Memory memory = FT_FACE( face )->memory; FT_ULong format, size; int firstCol, lastCol; int firstRow, lastRow; int nencoding, encodingOffset; - int i, j; - PCF_Encoding tmpEncoding, encoding = 0; + int i, j, k; + PCF_Encoding encoding = NULL; error = pcf_seek_to_table_type( stream, @@ -806,7 +877,16 @@ THE SOFTWARE. FT_Stream_ExitFrame( stream ); if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) - return PCF_Err_Invalid_File_Format; + return FT_THROW( Invalid_File_Format ); + + /* sanity checks */ + if ( firstCol < 0 || + firstCol > lastCol || + lastCol > 0xFF || + firstRow < 0 || + firstRow > lastRow || + lastRow > 0xFF ) + return FT_THROW( Invalid_Table ); FT_TRACE4(( "pdf_get_encodings:\n" )); @@ -815,56 +895,47 @@ THE SOFTWARE. nencoding = ( lastCol - firstCol + 1 ) * ( lastRow - firstRow + 1 ); - if ( FT_NEW_ARRAY( tmpEncoding, nencoding ) ) - return PCF_Err_Out_Of_Memory; + if ( FT_NEW_ARRAY( encoding, nencoding ) ) + return FT_THROW( Out_Of_Memory ); error = FT_Stream_EnterFrame( stream, 2 * nencoding ); if ( error ) goto Bail; - for ( i = 0, j = 0 ; i < nencoding; i++ ) + k = 0; + for ( i = firstRow; i <= lastRow; i++ ) { - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - encodingOffset = FT_GET_SHORT(); - else - encodingOffset = FT_GET_SHORT_LE(); - - if ( encodingOffset != -1 ) + for ( j = firstCol; j <= lastCol; j++ ) { - tmpEncoding[j].enc = ( ( ( i / ( lastCol - firstCol + 1 ) ) + - firstRow ) * 256 ) + - ( ( i % ( lastCol - firstCol + 1 ) ) + - firstCol ); + if ( PCF_BYTE_ORDER( format ) == MSBFirst ) + encodingOffset = FT_GET_SHORT(); + else + encodingOffset = FT_GET_SHORT_LE(); - tmpEncoding[j].glyph = (FT_Short)encodingOffset; + if ( encodingOffset != -1 ) + { + encoding[k].enc = i * 256 + j; + encoding[k].glyph = (FT_Short)encodingOffset; - FT_TRACE5(( " code %d (0x%04X): idx %d\n", - tmpEncoding[j].enc, tmpEncoding[j].enc, - tmpEncoding[j].glyph )); + FT_TRACE5(( " code %d (0x%04X): idx %d\n", + encoding[k].enc, encoding[k].enc, encoding[k].glyph )); - j++; + k++; + } } } FT_Stream_ExitFrame( stream ); - if ( FT_NEW_ARRAY( encoding, j ) ) + if ( FT_RENEW_ARRAY( encoding, nencoding, k ) ) goto Bail; - for ( i = 0; i < j; i++ ) - { - encoding[i].enc = tmpEncoding[i].enc; - encoding[i].glyph = tmpEncoding[i].glyph; - } - - face->nencodings = j; + face->nencodings = k; face->encodings = encoding; - FT_FREE( tmpEncoding ); return error; Bail: FT_FREE( encoding ); - FT_FREE( tmpEncoding ); return error; } @@ -919,7 +990,7 @@ THE SOFTWARE. FT_ULong type ) { FT_ULong format, size; - FT_Error error = PCF_Err_Ok; + FT_Error error; PCF_Accel accel = &face->accel; @@ -990,7 +1061,7 @@ THE SOFTWARE. static FT_Error pcf_interpret_style( PCF_Face pcf ) { - FT_Error error = PCF_Err_Ok; + FT_Error error = FT_Err_Ok; FT_Face face = FT_FACE( pcf ); FT_Memory memory = face->memory; @@ -1019,20 +1090,20 @@ THE SOFTWARE. ( *(prop->value.atom) == 'B' || *(prop->value.atom) == 'b' ) ) { face->style_flags |= FT_STYLE_FLAG_BOLD; - strings[1] = (char *)"Bold"; + strings[1] = (char*)"Bold"; } prop = pcf_find_property( pcf, "SETWIDTH_NAME" ); if ( prop && prop->isString && *(prop->value.atom) && !( *(prop->value.atom) == 'N' || *(prop->value.atom) == 'n' ) ) - strings[3] = (char *)(prop->value.atom); + strings[3] = (char*)( prop->value.atom ); prop = pcf_find_property( pcf, "ADD_STYLE_NAME" ); if ( prop && prop->isString && *(prop->value.atom) && !( *(prop->value.atom) == 'N' || *(prop->value.atom) == 'n' ) ) - strings[0] = (char *)(prop->value.atom); + strings[0] = (char*)( prop->value.atom ); for ( len = 0, nn = 0; nn < 4; nn++ ) { @@ -1046,7 +1117,7 @@ THE SOFTWARE. if ( len == 0 ) { - strings[0] = (char *)"Regular"; + strings[0] = (char*)"Regular"; lengths[0] = ft_strlen( strings[0] ); len = lengths[0] + 1; } @@ -1084,7 +1155,7 @@ THE SOFTWARE. for ( mm = 0; mm < len; mm++ ) - if (s[mm] == ' ') + if ( s[mm] == ' ' ) s[mm] = '-'; } @@ -1101,8 +1172,8 @@ THE SOFTWARE. pcf_load_font( FT_Stream stream, PCF_Face face ) { - FT_Error error = PCF_Err_Ok; - FT_Memory memory = FT_FACE(face)->memory; + FT_Error error; + FT_Memory memory = FT_FACE( face )->memory; FT_Bool hasBDFAccelerators; @@ -1158,9 +1229,10 @@ THE SOFTWARE. root->num_faces = 1; root->face_index = 0; - root->face_flags = FT_FACE_FLAG_FIXED_SIZES | - FT_FACE_FLAG_HORIZONTAL | - FT_FACE_FLAG_FAST_GLYPHS; + + root->face_flags |= FT_FACE_FLAG_FIXED_SIZES | + FT_FACE_FLAG_HORIZONTAL | + FT_FACE_FLAG_FAST_GLYPHS; if ( face->accel.constantWidth ) root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; @@ -1264,7 +1336,7 @@ THE SOFTWARE. { /* This is done to respect the behaviour of the original */ /* PCF font driver. */ - error = PCF_Err_Invalid_File_Format; + error = FT_THROW( Invalid_File_Format ); } return error; |