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/*
Made by Maurus Cuelenaere
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <stdbool.h>
#include <dirent.h>
#define VERSION "0.1"
static unsigned char* int2le(unsigned int val)
{
static unsigned char addr[4];
addr[0] = val & 0xff;
addr[1] = (val >> 8) & 0xff;
addr[2] = (val >> 16) & 0xff;
addr[3] = (val >> 24) & 0xff;
return addr;
}
static unsigned int le2int(unsigned char* buf)
{
unsigned int res = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
return res;
}
unsigned int _filesize(FILE* fd)
{
unsigned int tmp, oldpos;
oldpos = ftell(fd);
fseek(fd, 0, SEEK_END);
tmp = ftell(fd);
fseek(fd, oldpos, SEEK_SET);
return tmp;
}
static void print_usage(void)
{
#ifdef _WIN32
fprintf(stderr, "Usage: hxfreplace.exe [IN_FW] [OUT_FW] [BIN_FILE]\n\n");
fprintf(stderr, "Example: hxfreplace.exe VX747.HXF out.hxf ccpmp.bin\n\n");
#else
fprintf(stderr, "Usage: HXFreplace [IN_FW] [OUT_FW] [BIN_FILE]\n\n");
fprintf(stderr, "Example: HXFreplace VX747.HXF out.hxf ccpmp.bin\n\n");
#endif
}
static int checksum(FILE *file)
{
int oldpos = ftell(file);
int ret=0, i, filesize = _filesize(file)-0x40;
unsigned char *buf;
buf = (unsigned char*)malloc(filesize);
if(buf == NULL)
{
fseek(file, oldpos, SEEK_SET);
fprintf(stderr, "[ERR] Error while allocating memory\n");
return 0;
}
fseek(file, 0x40, SEEK_SET);
if(fread(buf, filesize, 1, file) != 1)
{
free(buf);
fseek(file, oldpos, SEEK_SET);
fprintf(stderr, "[ERR] Error while reading from file\n");
return 0;
}
fprintf(stderr, "[INFO] Computing checksum...");
for(i = 0; i < filesize; i+=4)
ret += le2int(&buf[i]);
free(buf);
fseek(file, oldpos, SEEK_SET);
fprintf(stderr, " Done!\n");
return ret;
}
int main(int argc, char *argv[])
{
FILE *infile, *outfile, *fw;
fprintf(stderr, "HXFreplace v" VERSION " - (C) 2008 Maurus Cuelenaere\n");
fprintf(stderr, "This is free software; see the source for copying conditions. There is NO\n");
fprintf(stderr, "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n");
if(argc != 4)
{
print_usage();
return 1;
}
if((infile = fopen(argv[1], "rb")) == NULL)
{
fprintf(stderr, "[ERR] Cannot open %s\n", argv[1]);
return 2;
}
if(fseek(infile, 0x40, SEEK_SET) != 0)
{
fprintf(stderr, "[ERR] Cannot seek to 0x40\n");
fclose(infile);
return 3;
}
fprintf(stderr, "[INFO] Searching for ccpmp.bin...\n");
int found = -1;
int filenamesize;
char *filename;
unsigned char tmp[4];
#define READ(x, len) if(fread(x, len, 1, infile) != 1) \
{ \
fprintf(stderr, "[ERR] Cannot read from %s\n", argv[1]); \
fclose(infile); \
return 4; \
}
while(found < 0)
{
READ(&tmp[0], 4);
filenamesize = le2int(tmp);
filename = (char*)malloc(filenamesize);
READ(filename, filenamesize);
if(strcmp(filename, "ccpmp.bin") == 0)
found = ftell(infile);
else
{
READ(&tmp[0], 4);
fseek(infile, le2int(tmp), SEEK_CUR);
}
free(filename);
}
fprintf(stderr, "[INFO] Found ccpmp.bin at 0x%x\n", found);
if((outfile = fopen(argv[2], "wb+")) == NULL)
{
fclose(infile);
fprintf(stderr, "[ERR] Cannot open %s\n", argv[2]);
return 5;
}
#define WRITE(x, len) if(fwrite(x, len, 1, outfile) != 1) \
{ \
fprintf(stderr, "[ERR] Cannot write to %s\n", argv[2]); \
fclose(outfile); \
if(fw != NULL) \
fclose(fw); \
return 5; \
}
unsigned char* buffer;
buffer = (unsigned char*)malloc(found);
fseek(infile, 0, SEEK_SET);
READ(buffer, found);
WRITE(buffer, found);
free(buffer);
if((fw = fopen(argv[3], "rb")) == NULL)
{
fclose(infile);
fclose(outfile);
fprintf(stderr, "[ERR] Cannot open %s\n", argv[3]);
}
int fw_filesize = _filesize(fw);
#define READ2(x, len) if(fread(x, len, 1, fw) != 1) \
{ \
fprintf(stderr, "[ERR] Cannot read from %s\n", argv[3]); \
fclose(infile); \
fclose(outfile); \
return 6; \
}
buffer = (unsigned char*)malloc(fw_filesize);
READ2(buffer, fw_filesize);
fputc(0x20, outfile); /* Padding */
WRITE(int2le(fw_filesize), 4);
WRITE(buffer, fw_filesize);
free(buffer);
fclose(fw);
fw = NULL;
fseek(infile, found+1, SEEK_SET);
READ(&tmp, 4);
if(fseek(infile, le2int(&tmp[0]), SEEK_CUR) != 0)
{
fprintf(stderr, "[INFO] Cannot seek into %s\n", argv[1]);
fclose(infile);
fclose(outfile);
return 7;
}
found = ftell(infile);
int other_size = _filesize(infile) - found;
buffer = (unsigned char*)malloc(other_size);
READ(buffer, other_size);
WRITE(buffer, other_size);
free(buffer);
fclose(infile);
fflush(outfile);
fseek(outfile, 0x14, SEEK_SET);
WRITE(int2le(_filesize(outfile)), 4);
WRITE(int2le(checksum(outfile)), 4);
fclose(outfile);
fprintf(stderr, "[INFO] Done!\n");
return 0;
}
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