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/*
* mbn.h
* support for .mbn file format (found in .bbfw files)
*
* Copyright (c) 2012 Nikias Bassen. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef MBN_H
#define MBN_H
#include <stdint.h>
#define MBN_V1_MAGIC "\x0A\x00\x00\x00"
#define MBN_V1_MAGIC_SIZE 4
struct _mbn_header_v1 {
uint32_t type; // the signed .mbn files have 0xA as value.
uint32_t unk_0x04;
uint32_t unk_0x08;
uint32_t unk_0x0c;
uint32_t data_size; // data_size = total_size - sizeof(mbn_header)
uint32_t sig_offset; // real offset = enc_sig_offset & 0xFFFFFF00
uint32_t unk_0x18;
uint32_t unk_0x1c;
uint32_t unk_0x20;
uint32_t unk_0x24;
} __attribute__((packed));
typedef struct _mbn_header_v1 mbn_header_v1;
#define MBN_V2_MAGIC "\xD1\xDC\x4B\x84\x34\x10\xD7\x73"
#define MBN_V2_MAGIC_SIZE 8
struct _mbn_header_v2 {
unsigned char magic1[8];
uint32_t unk_0x08;
uint32_t unk_0x0c; // 0xFFFFFFFF
uint32_t unk_0x10; // 0xFFFFFFFF
uint32_t header_size;
uint32_t unk_0x18;
uint32_t data_size; // data_size = total_size - sizeof(mbn_header_v2)
uint32_t sig_offset;
uint32_t unk_0x24;
uint32_t unk_0x28;
uint32_t unk_0x2c;
uint32_t unk_0x30;
uint32_t unk_0x34; // 0x1
uint32_t unk_0x38; // 0x1
uint32_t unk_0x3c; // 0xFFFFFFFF
uint32_t unk_0x40; // 0xFFFFFFFF
uint32_t unk_0x44; // 0xFFFFFFFF
uint32_t unk_0x48; // 0xFFFFFFFF
uint32_t unk_0x4c; // 0xFFFFFFFF
} __attribute__((packed));
typedef struct _mbn_header_v2 mbn_header_v2;
#define BIN_MAGIC "\x7D\x04\x00\xEA\x6C\x69\x48\x55"
#define BIN_MAGIC_SIZE 8
struct _bin_header {
unsigned char magic[8];
uint32_t unk_0x08;
uint32_t version;
uint32_t total_size; // size including header
uint32_t unk_0x14; // some offset
} __attribute__((packed));
typedef struct _bin_header bin_header;
#define ELF_MAGIC "\x7F\x45\x4C\x46\x01\x01\x01\x00" // ELF magic, 32bit, little endian, SYSV
#define ELF_MAGIC_SIZE 8
struct _elf_header {
unsigned char magic[8];
} __attribute__((packed));
typedef struct _elf_header elf_header;
typedef struct {
uint32_t version;
union {
mbn_header_v1 v1;
mbn_header_v2 v2;
bin_header bin;
elf_header elf;
} header;
uint32_t parsed_size;
uint32_t parsed_sig_offset;
void* data;
uint32_t size;
} mbn_file;
mbn_file* mbn_parse(unsigned char* data, unsigned int size);
void mbn_free(mbn_file* mbn);
int mbn_update_sig_blob(mbn_file* mbn, const unsigned char* data, unsigned int size);
#endif
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