usbloadergx/source/banner/openingbnr.c

530 lines
11 KiB
C

/****************************************************************************
* 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 från U.8- headerns början
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;
}