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Byteswap the resources if we detect that the header is in the wrong 

endianness.
This commit is contained in:
Alexandre Julliard 2005-08-10 13:04:23 +00:00
parent 0de0d11357
commit 88aa4b524d
1 changed files with 10 additions and 1 deletions
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11
tools/winebuild/res32.c
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@ -84,6 +84,7 @@ struct res_tree
unsigned int nb_types; /* total number of types */ unsigned int nb_types; /* total number of types */
}; };
static int byte_swapped; /* whether the current resource file is byte-swapped */
static const unsigned char *file_pos; /* current position in resource file */ static const unsigned char *file_pos; /* current position in resource file */
static const unsigned char *file_end; /* end of resource file */ static const unsigned char *file_end; /* end of resource file */
static const char *file_name; /* current resource file name */ static const char *file_name; /* current resource file name */
@ -139,6 +140,7 @@ static struct res_type *add_type( struct res_tree *tree, const struct resource *
static WORD get_word(void) static WORD get_word(void)
{ {
WORD ret = *(const WORD *)file_pos; WORD ret = *(const WORD *)file_pos;
if (byte_swapped) ret = (ret << 8) | (ret >> 8);
file_pos += sizeof(WORD); file_pos += sizeof(WORD);
if (file_pos > file_end) fatal_error( "%s is a truncated file\n", file_name ); if (file_pos > file_end) fatal_error( "%s is a truncated file\n", file_name );
return ret; return ret;
@ -148,6 +150,8 @@ static WORD get_word(void)
static DWORD get_dword(void) static DWORD get_dword(void)
{ {
DWORD ret = *(const DWORD *)file_pos; DWORD ret = *(const DWORD *)file_pos;
if (byte_swapped)
ret = ((ret << 24) | ((ret << 8) & 0x00ff0000) | ((ret >> 8) & 0x0000ff00) | (ret >> 24));
file_pos += sizeof(DWORD); file_pos += sizeof(DWORD);
if (file_pos > file_end) fatal_error( "%s is a truncated file\n", file_name ); if (file_pos > file_end) fatal_error( "%s is a truncated file\n", file_name );
return ret; return ret;
@ -175,8 +179,12 @@ static void get_string( struct string_id *str )
/* all values must be zero except header size */ /* all values must be zero except header size */
static int check_header(void) static int check_header(void)
{ {
DWORD size;
if (get_dword()) return 0; /* data size */ if (get_dword()) return 0; /* data size */
if (get_dword() != 32) return 0; /* header size */ size = get_dword(); /* header size */
if (size == 0x20000000) byte_swapped = 1;
else if (size != 0x20) return 0;
if (get_word() != 0xffff || get_word()) return 0; /* type, must be id 0 */ if (get_word() != 0xffff || get_word()) return 0; /* type, must be id 0 */
if (get_word() != 0xffff || get_word()) return 0; /* name, must be id 0 */ if (get_word() != 0xffff || get_word()) return 0; /* name, must be id 0 */
if (get_dword()) return 0; /* data version */ if (get_dword()) return 0; /* data version */
@ -230,6 +238,7 @@ int load_res32_file( const char *name, DLLSPEC *spec )
fatal_error( "Cannot read %s\n", name ); fatal_error( "Cannot read %s\n", name );
} }
byte_swapped = 0;
file_name = name; file_name = name;
file_pos = base; file_pos = base;
file_end = file_pos + st.st_size; file_end = file_pos + st.st_size;