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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Maurus Cuelenaere
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "creative.h"
#include "hmac-sha1.h"
static const char null_key_v1[] = "CTL:N0MAD|PDE0.SIGN.";
static const char null_key_v2[] = "CTL:N0MAD|PDE0.DPMP.";
static const char null_key_v3[] = "CTL:Z3N07|PDE0.DPMP.";
static const char null_key_v4[] = "CTL:N0MAD|PDE0.DPFP.";
static const struct device_info devices[] =
{
{"C\0r\0e\0a\0t\0i\0v\0e\0 \0Z\0e\0n\0 \0V\0i\0s\0i\0o\0n\0:\0M",
42, null_key_v2},
{"C\0r\0e\0a\0t\0i\0v\0e\0 \0Z\0e\0n\0 \0V\0i\0s\0i\0o\0n\0:\0M\0 \0G\0o\0!",
50, null_key_v2},
{"C\0r\0e\0a\0t\0i\0v\0e\0 \0Z\0e\0n\0 \0V\0i\0s\0i\0o\0n\0 \0©\0T\0L",
48, null_key_v2},
{"C\0r\0e\0a\0t\0i\0v\0e\0 \0Z\0E\0N\0 \0V", 42, null_key_v4}
};
/*
Create a Zen Vision:M FRESCUE structure file
*/
extern void int2le(unsigned int val, unsigned char* addr);
extern unsigned int le2int(unsigned char* buf);
static int make_ciff_file(unsigned char *inbuf, int length,
unsigned char *outbuf, int device)
{
char key[20];
memcpy(outbuf, "FFIC", 4);
int2le(length+90, &outbuf[4]);
memcpy(&outbuf[8], "FNIC", 4);
int2le(96, &outbuf[0xC]);
memcpy(&outbuf[0x10], devices[device].cinf, devices[device].cinf_size);
memset(&outbuf[0x10+devices[device].cinf_size], 0,
96 - devices[device].cinf_size);
memcpy(&outbuf[0x70], "ATAD", 4);
int2le(length+32, &outbuf[0x74]);
memcpy(&outbuf[0x78], "H\0j\0u\0k\0e\0b\0o\0x\0\x32\0.\0j\0r\0m",
32); /*Unicode encoded*/
memcpy(&outbuf[0x98], inbuf, length);
memcpy(&outbuf[0x98+length], "LLUN", 4);
int2le(20, &outbuf[0x98+length+4]);
/* Do checksum */
hmac_sha((char *)devices[device].null, strlen(devices[device].null),
(char *)outbuf, 0x98+length, key, 20);
memcpy(&outbuf[0x98+length+8], key, 20);
return length+0x90+0x1C+8;
}
static int make_jrm_file(unsigned char *inbuf, int length,
unsigned char *outbuf)
{
int i;
unsigned int sum = 0;
/* Calculate checksum for later use in header */
for(i=0; i<length; i+= 4)
sum += le2int(&inbuf[i]) + (le2int(&inbuf[i])>>16);
/* Clear the header area to zero */
memset(outbuf, 0, 0x18);
/* Header (EDOC) */
memcpy(outbuf, "EDOC", 4);
/* Total Size */
int2le(length+0x20, &outbuf[0x4]);
/* 4 bytes of zero */
/* Address = 0x900000 */
int2le(0x900000, &outbuf[0xC]);
/* Size */
int2le(length, &outbuf[0x10]);
/* Checksum */
int2le(sum, &outbuf[0x14]);
outbuf[0x16] = 0;
outbuf[0x17] = 0;
/* Data starts here... */
memcpy(&outbuf[0x18], inbuf, length);
/* Second block starts here ... */
/* Address = 0x0 */
/* Size */
int2le(0x4, &outbuf[0x18+length+0x4]);
/* Checksum */
outbuf[0x18+length+0x8] = 0xA9;
outbuf[0x18+length+0x9] = 0xD9;
/* Data: MOV PC, 0x900000 */
outbuf[0x18+length+0xC] = 0x09;
outbuf[0x18+length+0xD] = 0xF6;
outbuf[0x18+length+0xE] = 0xA0;
outbuf[0x18+length+0xF] = 0xE3;
return length+0x18+0x10;
}
int zvm_encode(char *iname, char *oname, int device)
{
size_t len;
int length;
FILE *file;
unsigned char *outbuf;
unsigned char *buf;
file = fopen(iname, "rb");
if (!file) {
perror(iname);
return -1;
}
fseek(file, 0, SEEK_END);
length = ftell(file);
fseek(file, 0, SEEK_SET);
buf = (unsigned char*)malloc(length);
if ( !buf ) {
printf("out of memory!\n");
return -1;
}
len = fread(buf, 1, length, file);
if(len < (size_t)length) {
perror(iname);
return -2;
}
fclose(file);
outbuf = (unsigned char*)malloc(length+0x300);
if ( !outbuf ) {
free(buf);
printf("out of memory!\n");
return -1;
}
length = make_jrm_file(buf, len, outbuf);
free(buf);
buf = (unsigned char*)malloc(length+0x200);
memset(buf, 0, length+0x200);
length = make_ciff_file(outbuf, length, buf, device);
free(outbuf);
file = fopen(oname, "wb");
if (!file) {
free(buf);
perror(oname);
return -3;
}
len = fwrite(buf, 1, length, file);
if(len < (size_t)length) {
free(buf);
perror(oname);
return -4;
}
free(buf);
fclose(file);
return 0;
}
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