OpenWrt – Rev 1
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#include <stdlib.h>
#include <sys/types.h>
#include <stdio.h>
#include <inttypes.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <sys/stat.h>
#include <libgen.h>
#include "bcmalgo.h"
int flag_print_version;
int flag_print_help;
int flag_compress;
uint16_t sa2100_magic = 0x2100;
uint16_t sa3349_magic = 0x3349;
uint32_t default_date = 0x00000000; //A long time ago in a galaxy far far away....
uint32_t default_load_address = 0x80010000; //The default load_address for the firmware image
static void print_help ( const char* ename )
{
printf ( "Firmware image packer and calculator for broadcom-based modems.\n" );
printf ( "Part of bcm-utils package.\n" );
printf ( "(c) 2009 Necromant (http://necromant.ath.cx). Thanks to Luke-jr for his initial work.\n" );
printf ( "usage: %s [options]\n", ename );
printf ( "Valid options are:\n" );
printf ( "--magic_bytes=value \t- specify magic bytes at the beginning of the image. default - 3349\n" );
printf ( "\t\t\t these can be sa2100 (for DPC2100 modem),\n\t\t\t sa3349 (haxorware guys use this one for some reason),\n\t\t\t or a custom hex value e.g. 0xFFFF\n" );
printf ( "--compress \t\t - Make use of LZMA (weird!) compression (Doesn't work yet).\n" );
printf ( "--rev_maj=value\t\t - major revision number. default 0\n" );
printf ( "--rev_min=value\t\t - minor revision number default 0\n" );
printf ( "--filename=value\t - use this filename in header instead of default (input filename)\n" );
printf ( "--ldaddress=value\t - hex value of the target load address. defaults to 0x80010000\n" );
printf ( "--input_file=value\t - What file are we packing?\n" );
printf ( "--output_file=value\t - What file shall we write? (default: image.bin)\n" );
#ifdef _HAX0RSTYLE
printf ( "--credz\t - Give some credz!\n" );
#endif
printf ( "\n" );
}
static time_t source_date_epoch = -1;
static void set_source_date_epoch() {
char *env = getenv("SOURCE_DATE_EPOCH");
char *endptr = env;
errno = 0;
if (env && *env) {
source_date_epoch = strtoull(env, &endptr, 10);
if (errno || (endptr && *endptr != '\0')) {
fprintf(stderr, "Invalid SOURCE_DATE_EPOCH");
exit(1);
}
}
}
int main ( int argc, char** argv )
{
if ( argc<2 )
{
print_help ( argv[0] );
}
static struct option long_options[] =
{
{"magic_bytes", required_argument, 0, 'm'},
{"rev_maj", required_argument, 0, 'j'},
{"rev_min", required_argument, 0, 'n'},
{"ldaddress", required_argument, 0, 'l'},
{"filename", required_argument, 0, 'f'},
{"input_file", required_argument, 0, 'i'},
{"output_file", required_argument, 0, 'o'},
{"compress", no_argument, &flag_compress, 'c'},
{"version", no_argument, &flag_print_version, 'v'},
{"help", no_argument, &flag_print_help, 'h'},
{0, 0, 0, 0}
};
int option_index = 0;
int opt_result=0;
char* filename=NULL;
char* input=NULL;
char* magic=NULL;
char* major=NULL;
char* minor=NULL;
char* ldaddr=NULL;
char* output=NULL;
while ( opt_result>=0 )
{
opt_result = getopt_long ( argc, argv, "m:j:n:f:i:o:vh", long_options, &option_index );
switch ( opt_result )
{
case 0:
printf ( "o!\n" );
break;
case 'h':
print_help ( argv[0] );
break;
case 'l':
ldaddr=optarg;
break;
case 'f':
filename=optarg;
break;
case 'i':
input=optarg;
break;
case 'o':
output=optarg;
break;
case 'm':
magic=optarg;
break;
case 'j':
major=optarg;
break;
case 'n':
minor=optarg;
break;
}
}
if ( input==NULL )
{
printf ( "Telepaths are still on holidays. I guess you should tell me what file should I process.\n\n" );
exit ( 1 );
}
if ( access ( input,R_OK ) !=0 )
{
printf ( "I cannot access the file %s. Is it there? Am I allowed?\n\n", input );
exit ( 1 );
}
uint32_t magicnum=sa2100_magic;
if ( magic )
{
if ( strcmp ( magic,"sa2100" ) ==0 ) magicnum=sa2100_magic; else
if ( strcmp ( magic,"sa3349" ) ==0 ) magicnum=sa3349_magic; else
{
sscanf ( magic, "0x%04X", &magicnum );
}
}
unsigned int majrev=0;
if ( major )
{
sscanf ( major, "%d", &majrev );
}
unsigned int minrev=0;
if ( minor )
{
sscanf ( minor, "%d", &minrev );
}
uint32_t ldaddress = default_load_address;
if ( ldaddr )
{
sscanf ( ldaddr, "0x%08X", &ldaddress );
}
char* dupe = strdup(input);
char* fname = basename ( dupe );
if ( filename )
{
fname = filename;
}
time_t t = -1;
set_source_date_epoch();
if (source_date_epoch != -1) {
t = source_date_epoch;
} else if ((time(&t) == (time_t)(-1))) {
fprintf(stderr, "time call failed\n");
return EXIT_FAILURE;
}
struct stat buf;
stat ( input,&buf );
ldr_header_t* head = construct_header ( magicnum, (uint16_t) majrev, (uint16_t) minrev, ( uint32_t ) t, ( uint32_t ) buf.st_size, ldaddress, fname, get_file_crc ( input ) );
free(dupe);
//uint32_t magic, uint16_t rev_maj,uint16_t rev_min, uint32_t build_date, uint32_t filelen, uint32_t ldaddress, const char* filename, uint32_t crc
//FILE* fd = fopen ("/tftpboot/haxorware11rev32.bin","r");
//fread(head,sizeof(ldr_header_t),1,fd);
char* filebuffer = malloc ( buf.st_size+10 );
FILE* fd = fopen ( input,"r" );
fread ( filebuffer, 1, buf.st_size,fd );
if (!output)
{
output = malloc(strlen(input+5));
strcpy(output,input);
strcat(output,".bin");
}
dump_header ( head );
FILE* fd_out = fopen ( output,"w+" );
if (!fd_out)
{
fprintf(stderr, "Failed to open output file: %s\n", output);
exit(1);
}
fwrite ( head,1,sizeof ( ldr_header_t ),fd_out );
fwrite ( filebuffer,1,buf.st_size,fd_out );
printf("Firmware image %s is ready\n", output);
return 0;
}