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rockbox/rbutil/chinachippatcher/chinachip.c
Maurus Cuelenaere 98f5c30b05 Fix ccpmp.bin backup in ChinaChippatcher (thanks to Aaron DeMille) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22699 a1c6a512-1295-4272-9138-f99709370657
2009-09-14 12:29:34 +00:00

313 lines
8.7 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 by Maurus Cuelenaere
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include "chinachip.h"
#define tr(x) x /* Qt translation support */
/* From http://www.rockbox.org/wiki/ChinaChip */
struct header
{
uint32_t signature; /* WADF */
uint32_t unk;
int8_t timestamp[12]; /* 200805081100 */
uint32_t size;
uint32_t checksum;
uint32_t unk2;
int8_t identifier[32]; /* Chinachip PMP firmware V1.0 */
} __attribute__ ((packed));
static inline void int2le(unsigned char* addr, unsigned int val)
{
addr[0] = val & 0xff;
addr[1] = (val >> 8) & 0xff;
addr[2] = (val >> 16) & 0xff;
addr[3] = (val >> 24) & 0xff;
}
static inline unsigned int le2int(unsigned char* buf)
{
return (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
}
static long int filesize(FILE* fd)
{
long int len;
fseek(fd, 0, SEEK_END);
len = ftell(fd);
fseek(fd, 0, SEEK_SET);
return len;
}
#ifdef STANDALONE
#define ERR(fmt, ...) err(userdata, "[ERR] "fmt"\n", ##__VA_ARGS__)
#define INFO(fmt, ...) info(userdata, "[INFO] "fmt"\n", ##__VA_ARGS__)
#define tr(x) x
#else
#define ERR(fmt, ...) err(userdata, fmt, ##__VA_ARGS__)
#define INFO(fmt, ...) info(userdata, fmt, ##__VA_ARGS__)
#endif
#define FCLOSE(fd) fclose(fd); fd = NULL;
#define CCPMPBIN_HEADER_SIZE (sizeof(uint32_t)*2 + sizeof(uint8_t) + 9)
#define TOTAL_SIZE (fsize + CCPMPBIN_HEADER_SIZE + bsize)
int chinachip_patch(const char* firmware, const char* bootloader,
const char* output, const char* ccpmp_backup,
void (*info)(void*, char*, ...),
void (*err)(void*, char*, ...),
void* userdata)
{
char header_time[13];
time_t cur_time;
struct tm* time_info;
unsigned char* buf = NULL;
FILE *fd = NULL, *bd = NULL, *od = NULL;
unsigned int ccpmp_size = 0, i, fsize, bsize;
signed int checksum = 0, ccpmp_pos;
fd = fopen(firmware, "rb");
if(!fd)
{
ERR(tr("Can't open file %s!"), firmware);
goto err;
}
bd = fopen(bootloader, "rb");
if(!bd)
{
ERR(tr("Can't open file %s!"), bootloader);
goto err;
}
bsize = filesize(bd);
INFO(tr("Bootloader size is %d bytes"), bsize);
FCLOSE(bd);
fsize = filesize(fd);
INFO(tr("Firmware size is %d bytes"), fsize);
buf = malloc(TOTAL_SIZE);
if(buf == NULL)
{
ERR(tr("Can't allocate %d bytes!"), fsize);
goto err;
}
memset(buf, 0, TOTAL_SIZE);
INFO(tr("Reading %s into memory..."), firmware);
if(fread(buf, fsize, 1, fd) != 1)
{
ERR(tr("Can't read file %s to memory!"), firmware);
goto err;
}
FCLOSE(fd);
if(memcmp(buf, "WADF", 4))
{
ERR(tr("File %s isn't a valid ChinaChip firmware!"), firmware);
goto err;
}
ccpmp_pos = -1, i = 0x40;
do
{
int filenamesize = le2int(&buf[i]);
i += sizeof(uint32_t);
if(!strncmp((char*) &buf[i], "ccpmp.bin", 9))
{
ccpmp_pos = i;
ccpmp_size = le2int(&buf[i + sizeof(uint8_t) + filenamesize]);
}
else
i += filenamesize + le2int(&buf[i + sizeof(uint8_t) + filenamesize])
+ sizeof(uint32_t) + sizeof(uint8_t);
} while(ccpmp_pos < 0 && i < fsize);
if(i >= fsize)
{
ERR(tr("Couldn't find ccpmp.bin in %s!"), firmware);
goto err;
}
INFO(tr("Found ccpmp.bin at %d bytes"), ccpmp_pos);
if(ccpmp_backup)
{
int ccpmp_data_pos = ccpmp_pos + 9;
bd = fopen(ccpmp_backup, "wb");
if(!bd)
{
ERR(tr("Can't open file %s!"), ccpmp_backup);
goto err;
}
INFO(tr("Writing %d bytes to %s..."), ccpmp_size, ccpmp_backup);
if(fwrite(&buf[ccpmp_data_pos], ccpmp_size, 1, bd) != 1)
{
ERR(tr("Can't write to file %s!"), ccpmp_backup);
goto err;
}
FCLOSE(bd);
}
INFO(tr("Renaming it to ccpmp.old..."));
buf[ccpmp_pos + 6] = 'o';
buf[ccpmp_pos + 7] = 'l';
buf[ccpmp_pos + 8] = 'd';
bd = fopen(bootloader, "rb");
if(!bd)
{
ERR(tr("Can't open file %s!"), bootloader);
goto err;
}
/* Also include path size */
ccpmp_pos -= sizeof(uint32_t);
INFO(tr("Making place for ccpmp.bin..."));
memmove(&buf[ccpmp_pos + bsize + CCPMPBIN_HEADER_SIZE],
&buf[ccpmp_pos], fsize - ccpmp_pos);
INFO(tr("Reading %s into memory..."), bootloader);
if(fread(&buf[ccpmp_pos + CCPMPBIN_HEADER_SIZE],
bsize, 1, bd) != 1)
{
ERR(tr("Can't read file %s to memory!"), bootloader);
goto err;
}
FCLOSE(bd);
INFO(tr("Adding header to %s..."), bootloader);
int2le(&buf[ccpmp_pos ], 9); /* Pathname Size */
memcpy(&buf[ccpmp_pos + 4 ], "ccpmp.bin", 9); /* Pathname */
memset(&buf[ccpmp_pos + 4 + 9 ], 0x20, sizeof(uint8_t)); /* File Type */
int2le(&buf[ccpmp_pos + 4 + 9 + 1], bsize); /* File Size */
time(&cur_time);
time_info = localtime(&cur_time);
if(time_info == NULL)
{
ERR(tr("Can't obtain current time!"));
goto err;
}
snprintf(header_time, 13, "%04d%02d%02d%02d%02d", time_info->tm_year + 1900,
time_info->tm_mon,
time_info->tm_mday,
time_info->tm_hour,
time_info->tm_min);
INFO(tr("Computing checksum..."));
for(i = sizeof(struct header); i < TOTAL_SIZE; i+=4)
checksum += le2int(&buf[i]);
INFO(tr("Updating main header..."));
memcpy(&buf[offsetof(struct header, timestamp)], header_time, 12);
int2le(&buf[offsetof(struct header, size) ], TOTAL_SIZE);
int2le(&buf[offsetof(struct header, checksum) ], checksum);
od = fopen(output, "wb");
if(!od)
{
ERR(tr("Can't open file %s!"), output);
goto err;
}
INFO(tr("Writing output to %s..."), output);
if(fwrite(buf, TOTAL_SIZE, 1, od) != 1)
{
ERR(tr("Can't write to file %s!"), output);
goto err;
}
fclose(od);
free(buf);
return 0;
err:
if(buf)
free(buf);
if(fd)
fclose(fd);
if(bd)
fclose(bd);
if(od)
fclose(od);
return -1;
}
#ifdef STANDALONE
#define VERSION "0.1"
#define PRINT(fmt, ...) fprintf(stderr, fmt"\n", ##__VA_ARGS__)
static void info(void* userdata, char* fmt, ...)
{
(void)userdata;
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
}
static void err(void* userdata, char* fmt, ...)
{
(void)userdata;
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
}
void usage(char* name)
{
PRINT("Usage:");
PRINT(" %s <firmware> <bootloader> <firmware_output> [backup]", name);
PRINT("\nExample:");
PRINT(" %s VX747.HXF bootloader.bin output.HXF ccpmp.bak", name);
PRINT(" This will copy ccpmp.bin in VX747.HXF as ccpmp.old and replace it"
" with bootloader.bin, the output will get written to output.HXF."
" The old ccpmp.bin will get written to ccpmp.bak.");
}
int main(int argc, char* argv[])
{
PRINT("ChinaChipPatcher v" VERSION " - (C) Maurus Cuelenaere 2009");
PRINT("This is free software; see the source for copying conditions. There is NO");
PRINT("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
if(argc < 4)
{
usage(argv[0]);
return 1;
}
return chinachip_patch(argv[1], argv[2], argv[3], argc > 4 ? argv[4] : NULL,
&info, &err, NULL);
}
#endif
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