usbloadergx/source/banner/openingbnr.c

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/****************************************************************************
* USB Loader GX Team
* openingbnr
*
* Extract opening.bnr/banner.bin/sound.bin/icon.bin
*
* Copyright 2008 Magicus <magicus@gmail.com>
* Licensed under the terms of the GNU GPL, version 2
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
* Version 1.0 Initial release
***************************************************************************/
#define _GNU_SOURCE
#include <ogcsys.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "libfat/fat.h"
#include "MD5.h"
#include "banner.h"
#include "openingbnr.h"
#include "../ramdisk/ramdisk.h"
#include "../listfiles.h"
u16 be16( const u8 *p )
{
return ( p[0] << 8 ) | p[1];
}
u32 be32( const u8 *p )
{
return ( p[0] << 24 ) | ( p[1] << 16 ) | ( p[2] << 8 ) | p[3];
}
u64 be64( const u8 *p )
{
return ( ( u64 )be32( p ) << 32 ) | be32( p + 4 );
}
u64 be34( const u8 *p )
{
return 4 * ( u64 )be32( p );
}
void wbe16( u8 *p, u16 x )
{
p[0] = x >> 8;
p[1] = x;
}
void wbe32( u8 *p, u32 x )
{
wbe16( p, x >> 16 );
wbe16( p + 2, x );
}
void wbe64( u8 *p, u64 x )
{
wbe32( p, x >> 32 );
wbe32( p + 4, x );
}
void md5( u8 *data, u32 len, u8 *hash )
{
MD5( hash, data, len );
}
typedef struct
{
u8 zeroes[0x40];
u32 imet; // "IMET"
u8 zero_six_zero_three[8]; // fixed, unknown purpose
u32 sizes[3];
u32 flag1;
u16 name_jp[0x2a]; // might be empty
u16 name_en[0x2a];
u16 name_de[0x2a];
u16 name_fr[0x2a];
u16 name_es[0x2a];
u16 name_it[0x2a];
u16 name_nl[0x2a];
u8 zeroes_2[0x348];
u8 crypto[0x10];
} imet_data_t;
typedef struct
{
u32 imd5_tag; // 0x494D4435 "IMD5";
u32 size; // size of the rest of part B, starting from next field.
u8 zeroes[8];
u8 md5[16];
u32 payload_tag; // 0x4C5A3737 "LZ77" if this is lz77
u32 payload_data;
} imd5_header_t;
typedef struct
{
u16 type;
u16 name_offset;
u32 data_offset; // == absolut offset fr<66>n U.8- headerns b<>rjan
u32 size; // last included file num for directories
} U8_node;
typedef struct
{
u32 tag; // 0x55AA382D "U.8-"
u32 rootnode_offset; // offset to root_node, always 0x20.
u32 header_size; // size of header from root_node to end of string table.
u32 data_offset; // offset to data -- this is rootnode_offset + header_size, aligned to 0x40.
u8 zeroes[16];
} U8_archive_header;
static int write_file( void* data, size_t size, char* name )
{
size_t written = 0;
FILE *out;
out = fopen( name, "wb" );
if ( out )
{
written = fwrite( data, 1, size, out );
fclose( out );
}
return ( written == size ) ? 1 : -1;
}
u8* decompress_lz77( u8 *data, size_t data_size, size_t* decompressed_size )
{
u8 *data_end;
u8 *decompressed_data;
size_t unpacked_size;
u8 *in_ptr;
u8 *out_ptr;
u8 *out_end;
in_ptr = data;
data_end = data + data_size;
// Assume this for now and grow when needed
unpacked_size = data_size;
decompressed_data = malloc( unpacked_size );
out_end = decompressed_data + unpacked_size;
out_ptr = decompressed_data;
while ( in_ptr < data_end )
{
int bit;
u8 bitmask = *in_ptr;
in_ptr++;
for ( bit = 0x80; bit != 0; bit >>= 1 )
{
if ( bitmask & bit )
{
// Next section is compressed
u8 rep_length;
u16 rep_offset;
rep_length = ( *in_ptr >> 4 ) + 3;
rep_offset = *in_ptr & 0x0f;
in_ptr++;
rep_offset = *in_ptr | ( rep_offset << 8 );
in_ptr++;
if ( out_ptr - decompressed_data < rep_offset )
{
return NULL;
}
for ( ; rep_length > 0; rep_length-- )
{
*out_ptr = out_ptr[-rep_offset-1];
out_ptr++;
if ( out_ptr >= out_end )
{
// Need to grow buffer
decompressed_data = realloc( decompressed_data, unpacked_size * 2 );
out_ptr = decompressed_data + unpacked_size;
unpacked_size *= 2;
out_end = decompressed_data + unpacked_size;
}
}
}
else
{
// Just copy byte
*out_ptr = *in_ptr;
out_ptr++;
if ( out_ptr >= out_end )
{
// Need to grow buffer
decompressed_data = realloc( decompressed_data, unpacked_size * 2 );
out_ptr = decompressed_data + unpacked_size;
unpacked_size *= 2;
out_end = decompressed_data + unpacked_size;
}
in_ptr++;
}
}
}
*decompressed_size = ( out_ptr - decompressed_data );
return decompressed_data;
}
static int write_imd5_lz77( u8* data, size_t size, char* outname )
{
imd5_header_t* header = ( imd5_header_t* ) data;
u32 tag;
u32 size_in_imd5;
u8 md5_calc[16];
u8 *decompressed_data;
size_t decompressed_size;
tag = be32( ( u8* ) & header->imd5_tag );
if ( tag != 0x494D4435 )
{
return -4;
}
md5( data + 32, size - 32, md5_calc );
if ( memcmp( &header->md5, md5_calc, 0x10 ) )
{
return -5;
}
size_in_imd5 = be32( ( u8* ) & header->size );
if ( size_in_imd5 != size - 32 )
{
return -6;
}
tag = be32( ( u8* ) & header->payload_tag );
if ( tag == 0x4C5A3737 )
{
// "LZ77" - uncompress
decompressed_data = decompress_lz77( data + sizeof( imd5_header_t ), size - sizeof( imd5_header_t ), &decompressed_size );
if ( decompressed_data == NULL )
return -7;
write_file( decompressed_data, decompressed_size, outname );
//printf(", uncompressed %d bytes, md5 ok", decompressed_size);
free( decompressed_data );
}
else
{
write_file( &header->payload_tag, size - 32, outname );
//printf(", md5 ok");
}
return 0;
}
static int do_U8_archive( FILE *fp )
{
U8_archive_header header;
U8_node root_node;
u32 tag;
u32 num_nodes;
U8_node* nodes;
u8* string_table;
size_t rest_size;
unsigned int i;
u32 data_offset;
u32 current_offset;
u16 dir_stack[16];
int dir_index = 0;
fread( &header, 1, sizeof header, fp );
tag = be32( ( u8* ) & header.tag );
if ( tag != 0x55AA382D )
{
return -1;
}
fread( &root_node, 1, sizeof( root_node ), fp );
num_nodes = be32( ( u8* ) & root_node.size ) - 1;
//printf("Number of files: %d\n", num_nodes);
nodes = malloc( sizeof( U8_node ) * ( num_nodes ) );
fread( nodes, 1, num_nodes * sizeof( U8_node ), fp );
data_offset = be32( ( u8* ) & header.data_offset );
rest_size = data_offset - sizeof( header ) - ( num_nodes + 1 ) * sizeof( U8_node );
string_table = malloc( rest_size );
fread( string_table, 1, rest_size, fp );
current_offset = data_offset;
for ( i = 0; i < num_nodes; i++ )
{
U8_node* node = &nodes[i];
u16 type = be16( ( u8* ) & node->type );
u16 name_offset = be16( ( u8* ) & node->name_offset );
u32 my_data_offset = be32( ( u8* ) & node->data_offset );
u32 size = be32( ( u8* ) & node->size );
char* name = ( char* ) & string_table[name_offset];
u8* file_data;
if ( type == 0x0100 )
{
// Directory
mkdir( name, 0777 );
chdir( name );
dir_stack[++dir_index] = size;
//printf("%*s%s/\n", dir_index, "", name);
}
else
{
// Normal file
u8 padding[32];
if ( type != 0x0000 )
{
free( string_table );
return -2;
}
if ( current_offset < my_data_offset )
{
int diff = my_data_offset - current_offset;
if ( diff > 32 )
{
free( string_table );
return -3;
}
fread( padding, 1, diff, fp );
current_offset += diff;
}
file_data = malloc( size );
fread( file_data, 1, size, fp );
//printf("%*s %s (%d bytes", dir_index, "", name, size);
int result;
result = write_imd5_lz77( file_data, size, name );
if ( result < 0 )
{
free( string_table );
return result;
}
//printf(")\n");
current_offset += size;
}
while ( dir_stack[dir_index] == i + 2 && dir_index > 0 )
{
chdir( ".." );
dir_index--;
}
}
free( string_table );
return 0;
}
static void do_imet_header( FILE *fp )
{
imet_data_t header;
fread( &header, 1, sizeof header, fp );
write_file( &header, sizeof( header ), "header.imet" );
}
void do_U8_archivebanner( FILE *fp )
{
U8_archive_header header;
U8_node root_node;
u32 tag;
u32 num_nodes;
U8_node* nodes;
u8* string_table;
size_t rest_size;
unsigned int i;
u32 data_offset;
u16 dir_stack[16];
int dir_index = 0;
fread( &header, 1, sizeof header, fp );
tag = be32( ( u8* ) & header.tag );
if ( tag != 0x55AA382D )
{
//printf("No U8 tag");
exit( 0 );
}
fread( &root_node, 1, sizeof( root_node ), fp );
num_nodes = be32( ( u8* ) & root_node.size ) - 1;
printf( "Number of files: %d\n", num_nodes );
nodes = malloc( sizeof( U8_node ) * ( num_nodes ) );
fread( nodes, 1, num_nodes * sizeof( U8_node ), fp );
data_offset = be32( ( u8* ) & header.data_offset );
rest_size = data_offset - sizeof( header ) - ( num_nodes + 1 ) * sizeof( U8_node );
string_table = malloc( rest_size );
fread( string_table, 1, rest_size, fp );
for ( i = 0; i < num_nodes; i++ )
{
U8_node* node = &nodes[i];
u16 type = be16( ( u8* ) & node->type );
u16 name_offset = be16( ( u8* ) & node->name_offset );
u32 my_data_offset = be32( ( u8* ) & node->data_offset );
u32 size = be32( ( u8* ) & node->size );
char* name = ( char* ) & string_table[name_offset];
u8* file_data;
if ( type == 0x0100 )
{
// Directory
mkdir( name, 0777 );
chdir( name );
dir_stack[++dir_index] = size;
//printf("%*s%s/\n", dir_index, "", name);
}
else
{
// Normal file
if ( type != 0x0000 )
{
printf( "Unknown type" );
exit( 0 );
}
fseek( fp, my_data_offset, SEEK_SET );
file_data = malloc( size );
fread( file_data, 1, size, fp );
write_file( file_data, size, name );
free( file_data );
//printf("%*s %s (%d bytes)\n", dir_index, "", name, size);
}
while ( dir_stack[dir_index] == i + 2 && dir_index > 0 )
{
chdir( ".." );
dir_index--;
}
}
free( string_table );
}
int extractbnrfile( const char * filepath, const char * destpath )
{
int ret = -1;
FILE *fp = fopen( filepath, "rb" );
if ( fp )
{
subfoldercreate( destpath );
chdir( destpath );
do_imet_header( fp );
ret = do_U8_archive( fp );
fclose( fp );
}
return ret;
}
int unpackBin( const char * filename, const char * outdir )
{
FILE *fp = fopen( filename, "rb" );;
if ( fp )
{
subfoldercreate( outdir );
chdir( outdir );
do_U8_archivebanner( fp );
fclose( fp );
return 1;
}
return 0;
}
#define TMP_PATH(s) "BANNER:/dump"s
//#define TMP_PATH(s) "SD:/dump"s
int unpackBanner( const u8 *gameid, int what, const char *outdir )
{
char path[256];
if ( !ramdiskMount( "BANNER", NULL ) ) return -1;
subfoldercreate( TMP_PATH( "/" ) );
s32 ret = dump_banner( gameid, TMP_PATH( "/opening.bnr" ) );
if ( ret != 1 )
{
ret = -1;
goto error2;
}
ret = extractbnrfile( TMP_PATH( "/opening.bnr" ), TMP_PATH( "/" ) );
if ( ret != 0 )
{
ret = -1;
goto error2;
}
if ( what & UNPACK_BANNER_BIN )
{
snprintf( path, sizeof( path ), "%sbanner/", outdir );
ret = unpackBin( TMP_PATH( "/meta/banner.bin" ), path );
if ( ret != 1 )
{
ret = -1;
goto error2;
}
}
if ( what & UNPACK_ICON_BIN )
{
snprintf( path, sizeof( path ), "%sicon/", outdir );
ret = unpackBin( TMP_PATH( "/meta/icon.bin" ), path );
if ( ret != 1 )
{
ret = -1;
goto error2;
}
}
if ( what & UNPACK_SOUND_BIN )
{
snprintf( path, sizeof( path ), "%ssound.bin", outdir );
FILE *fp = fopen( TMP_PATH( "/meta/sound.bin" ), "rb" );
if ( fp )
{
size_t size;
u8 *data;
fseek( fp, 0, SEEK_END );
size = ftell( fp );
if ( !size )
{
ret = -1;
goto error;
}
fseek( fp, 0, SEEK_SET );
data = ( u8 * )malloc( size );
if ( !data )
{
ret = -1;
goto error;
}
if ( fread( data, 1, size, fp ) != size )
{
ret = -1;
goto error;
}
ret = write_file( data, size, path );
}
error: fclose( fp );
}
ramdiskUnmount( "BANNER" );
error2:
if ( ret < 0 )
return ret;
return 1;
}