diff options
Diffstat (limited to 'src/3rdparty/freetype/src/type42/t42parse.c')
| -rw-r--r-- | src/3rdparty/freetype/src/type42/t42parse.c | 168 |
1 files changed, 107 insertions, 61 deletions
diff --git a/src/3rdparty/freetype/src/type42/t42parse.c b/src/3rdparty/freetype/src/type42/t42parse.c index c47a77786d..f96a43b14d 100644 --- a/src/3rdparty/freetype/src/type42/t42parse.c +++ b/src/3rdparty/freetype/src/type42/t42parse.c @@ -4,7 +4,7 @@ * * Type 42 font parser (body). * - * Copyright (C) 2002-2019 by + * Copyright (C) 2002-2023 by * Roberto Alameda. * * This file is part of the FreeType project, and may only be used, @@ -18,9 +18,9 @@ #include "t42parse.h" #include "t42error.h" -#include FT_INTERNAL_DEBUG_H -#include FT_INTERNAL_STREAM_H -#include FT_INTERNAL_POSTSCRIPT_AUX_H +#include <freetype/internal/ftdebug.h> +#include <freetype/internal/ftstream.h> +#include <freetype/internal/psaux.h> /************************************************************************** @@ -34,19 +34,19 @@ static void - t42_parse_font_matrix( T42_Face face, - T42_Loader loader ); + t42_parse_font_matrix( FT_Face face, + void* loader_ ); static void - t42_parse_encoding( T42_Face face, - T42_Loader loader ); + t42_parse_encoding( FT_Face face, + void* loader_ ); static void - t42_parse_charstrings( T42_Face face, - T42_Loader loader ); + t42_parse_charstrings( FT_Face face, + void* loader_ ); static void - t42_parse_sfnts( T42_Face face, - T42_Loader loader ); + t42_parse_sfnts( FT_Face face, + void* loader_ ); /* as Type42 fonts have no Private dict, */ @@ -92,7 +92,7 @@ #undef T1CODE #define T1CODE T1_FIELD_LOCATION_BBOX - T1_FIELD_BBOX("FontBBox", xMin, 0 ) + T1_FIELD_BBOX( "FontBBox", xMin, 0 ) T1_FIELD_CALLBACK( "FontMatrix", t42_parse_font_matrix, 0 ) T1_FIELD_CALLBACK( "Encoding", t42_parse_encoding, 0 ) @@ -197,7 +197,7 @@ else { /* read segment in memory */ - if ( FT_ALLOC( parser->base_dict, size ) || + if ( FT_QALLOC( parser->base_dict, size ) || FT_STREAM_READ( parser->base_dict, size ) ) goto Exit; @@ -241,12 +241,14 @@ static void - t42_parse_font_matrix( T42_Face face, - T42_Loader loader ) + t42_parse_font_matrix( FT_Face face, /* T42_Face */ + void* loader_ ) { - T42_Parser parser = &loader->parser; - FT_Matrix* matrix = &face->type1.font_matrix; - FT_Vector* offset = &face->type1.font_offset; + T42_Face t42face = (T42_Face)face; + T42_Loader loader = (T42_Loader)loader_; + T42_Parser parser = &loader->parser; + FT_Matrix* matrix = &t42face->type1.font_matrix; + FT_Vector* offset = &t42face->type1.font_offset; FT_Fixed temp[6]; FT_Fixed temp_scale; FT_Int result; @@ -299,14 +301,16 @@ static void - t42_parse_encoding( T42_Face face, - T42_Loader loader ) + t42_parse_encoding( FT_Face face, + void* loader_ ) { - T42_Parser parser = &loader->parser; + T42_Face t42face = (T42_Face)face; + T42_Loader loader = (T42_Loader)loader_; + T42_Parser parser = &loader->parser; FT_Byte* cur; - FT_Byte* limit = parser->root.limit; + FT_Byte* limit = parser->root.limit; - PSAux_Service psaux = (PSAux_Service)face->psaux; + PSAux_Service psaux = (PSAux_Service)t42face->psaux; T1_Skip_Spaces( parser ); @@ -322,7 +326,7 @@ /* and we must load it now */ if ( ft_isdigit( *cur ) || *cur == '[' ) { - T1_Encoding encode = &face->type1.encoding; + T1_Encoding encode = &t42face->type1.encoding; FT_Int count, n; PS_Table char_table = &loader->encoding_table; FT_Memory memory = parser->root.memory; @@ -363,8 +367,8 @@ /* we use a T1_Table to store our charnames */ loader->num_chars = encode->num_chars = count; - if ( FT_NEW_ARRAY( encode->char_index, count ) || - FT_NEW_ARRAY( encode->char_name, count ) || + if ( FT_QNEW_ARRAY( encode->char_index, count ) || + FT_QNEW_ARRAY( encode->char_name, count ) || FT_SET_ERROR( psaux->ps_table_funcs->init( char_table, count, memory ) ) ) { @@ -493,8 +497,8 @@ T1_Skip_Spaces( parser ); } - face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY; - parser->root.cursor = cur; + t42face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY; + parser->root.cursor = cur; } /* Otherwise, we should have either `StandardEncoding', */ @@ -503,15 +507,15 @@ { if ( cur + 17 < limit && ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 ) - face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD; + t42face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD; else if ( cur + 15 < limit && ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 ) - face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT; + t42face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT; else if ( cur + 18 < limit && ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 ) - face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1; + t42face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1; else parser->root.error = FT_ERR( Ignore ); @@ -529,16 +533,19 @@ static void - t42_parse_sfnts( T42_Face face, - T42_Loader loader ) + t42_parse_sfnts( FT_Face face, + void* loader_ ) { + T42_Face t42face = (T42_Face)face; + T42_Loader loader = (T42_Loader)loader_; T42_Parser parser = &loader->parser; FT_Memory memory = parser->root.memory; FT_Byte* cur; FT_Byte* limit = parser->root.limit; FT_Error error; FT_Int num_tables = 0; - FT_Long count; + FT_Long ttf_count; + FT_Long ttf_reserved; FT_ULong n, string_size, old_string_size, real_size; FT_Byte* string_buf = NULL; @@ -546,6 +553,9 @@ T42_Load_Status status; + /** There should only be one sfnts array, but free any previous. */ + FT_FREE( t42face->ttf_data ); + t42face->ttf_size = 0; /* The format is */ /* */ @@ -574,7 +584,13 @@ status = BEFORE_START; string_size = 0; old_string_size = 0; - count = 0; + ttf_count = 0; + ttf_reserved = 12; + if ( FT_QALLOC( t42face->ttf_data, ttf_reserved ) ) + goto Fail; + + FT_TRACE2(( "\n" )); + FT_TRACE2(( "t42_parse_sfnts:\n" )); while ( parser->root.cursor < limit ) { @@ -586,6 +602,7 @@ if ( *cur == ']' ) { parser->root.cursor++; + t42face->ttf_size = ttf_count; goto Exit; } @@ -611,7 +628,7 @@ error = FT_THROW( Invalid_File_Format ); goto Fail; } - if ( FT_REALLOC( string_buf, old_string_size, string_size ) ) + if ( FT_QREALLOC( string_buf, old_string_size, string_size ) ) goto Fail; allocated = 1; @@ -680,6 +697,9 @@ goto Fail; } + FT_TRACE2(( " PS string size %5lu bytes, offset 0x%08lx (%lu)\n", + string_size, ttf_count, ttf_count )); + /* The whole TTF is now loaded into `string_buf'. We are */ /* checking its contents while copying it to `ttf_data'. */ @@ -691,50 +711,64 @@ { case BEFORE_START: /* load offset table, 12 bytes */ - if ( count < 12 ) + if ( ttf_count < 12 ) { - face->ttf_data[count++] = string_buf[n]; + t42face->ttf_data[ttf_count++] = string_buf[n]; continue; } else { - num_tables = 16 * face->ttf_data[4] + face->ttf_data[5]; - status = BEFORE_TABLE_DIR; - face->ttf_size = 12 + 16 * num_tables; + FT_Long ttf_reserved_prev = ttf_reserved; + - if ( (FT_Long)size < face->ttf_size ) + num_tables = 16 * t42face->ttf_data[4] + t42face->ttf_data[5]; + status = BEFORE_TABLE_DIR; + ttf_reserved = 12 + 16 * num_tables; + + FT_TRACE2(( " SFNT directory contains %d tables\n", + num_tables )); + + if ( (FT_Long)size < ttf_reserved ) { FT_ERROR(( "t42_parse_sfnts: invalid data in sfnts array\n" )); error = FT_THROW( Invalid_File_Format ); goto Fail; } - if ( FT_REALLOC( face->ttf_data, 12, face->ttf_size ) ) + if ( FT_QREALLOC( t42face->ttf_data, ttf_reserved_prev, + ttf_reserved ) ) goto Fail; } - /* fall through */ + FALL_THROUGH; case BEFORE_TABLE_DIR: /* the offset table is read; read the table directory */ - if ( count < face->ttf_size ) + if ( ttf_count < ttf_reserved ) { - face->ttf_data[count++] = string_buf[n]; + t42face->ttf_data[ttf_count++] = string_buf[n]; continue; } else { int i; FT_ULong len; + FT_Long ttf_reserved_prev = ttf_reserved; + FT_TRACE2(( "\n" )); + FT_TRACE2(( " table length\n" )); + FT_TRACE2(( " ------------------------------\n" )); + for ( i = 0; i < num_tables; i++ ) { - FT_Byte* p = face->ttf_data + 12 + 16 * i + 12; + FT_Byte* p = t42face->ttf_data + 12 + 16 * i + 12; len = FT_PEEK_ULONG( p ); + FT_TRACE2(( " %4i 0x%08lx (%lu)\n", i, len, len )); + if ( len > size || - face->ttf_size > (FT_Long)( size - len ) ) + ttf_reserved > (FT_Long)( size - len ) ) { FT_ERROR(( "t42_parse_sfnts:" " invalid data in sfnts array\n" )); @@ -743,26 +777,31 @@ } /* Pad to a 4-byte boundary length */ - face->ttf_size += (FT_Long)( ( len + 3 ) & ~3U ); + ttf_reserved += (FT_Long)( ( len + 3 ) & ~3U ); } + ttf_reserved += 1; status = OTHER_TABLES; - if ( FT_REALLOC( face->ttf_data, 12 + 16 * num_tables, - face->ttf_size + 1 ) ) + FT_TRACE2(( "\n" )); + FT_TRACE2(( " allocating %ld bytes\n", ttf_reserved )); + FT_TRACE2(( "\n" )); + + if ( FT_QREALLOC( t42face->ttf_data, ttf_reserved_prev, + ttf_reserved ) ) goto Fail; } - /* fall through */ + FALL_THROUGH; case OTHER_TABLES: /* all other tables are just copied */ - if ( count >= face->ttf_size ) + if ( ttf_count >= ttf_reserved ) { FT_ERROR(( "t42_parse_sfnts: too much binary data\n" )); error = FT_THROW( Invalid_File_Format ); goto Fail; } - face->ttf_data[count++] = string_buf[n]; + t42face->ttf_data[ttf_count++] = string_buf[n]; } } @@ -776,15 +815,22 @@ parser->root.error = error; Exit: + if ( parser->root.error ) + { + FT_FREE( t42face->ttf_data ); + t42face->ttf_size = 0; + } if ( allocated ) FT_FREE( string_buf ); } static void - t42_parse_charstrings( T42_Face face, - T42_Loader loader ) + t42_parse_charstrings( FT_Face face, /* T42_Face */ + void* loader_ ) { + T42_Face t42face = (T42_Face)face; + T42_Loader loader = (T42_Loader)loader_; T42_Parser parser = &loader->parser; PS_Table code_table = &loader->charstrings; PS_Table name_table = &loader->glyph_names; @@ -792,7 +838,7 @@ FT_Memory memory = parser->root.memory; FT_Error error; - PSAux_Service psaux = (PSAux_Service)face->psaux; + PSAux_Service psaux = (PSAux_Service)t42face->psaux; FT_Byte* cur; FT_Byte* limit = parser->root.limit; @@ -826,7 +872,7 @@ if ( loader->num_glyphs > ( limit - parser->root.cursor ) >> 2 ) { FT_TRACE0(( "t42_parse_charstrings: adjusting number of glyphs" - " (from %d to %d)\n", + " (from %d to %zu)\n", loader->num_glyphs, ( limit - parser->root.cursor ) >> 2 )); loader->num_glyphs = ( limit - parser->root.cursor ) >> 2; @@ -970,9 +1016,9 @@ name_table->elements[n][len] = '\0'; /* record index of /.notdef */ - if ( *cur == '.' && + if ( *cur == '.' && ft_strcmp( ".notdef", - (const char*)(name_table->elements[n]) ) == 0 ) + (const char*)( name_table->elements[n] ) ) == 0 ) { notdef_index = n; notdef_found = 1; |