void usage(void)
{
fprintf(stderr, "Usage:\n");
- fprintf(stderr, " trx [-2] [-o outfile] [-m maxlen] [-a align] [-b offset] \\\n");
+ fprintf(stderr, " trx [-2] [-o outfile] [-m maxlen] [-a align] [-b absolute offset] [-x relative offset]\n");
fprintf(stderr, " [-f file] [-f file [-f file [-f file (v2 only)]]]\n");
exit(EXIT_FAILURE);
}
char *e;
int c, i, append = 0;
size_t n;
- uint32_t cur_len;
+ ssize_t n2;
+ uint32_t cur_len, fsmark=0;
unsigned long maxlen = TRX_MAX_LEN;
struct trx_header *p;
char trx_version = 1;
+ unsigned char binheader[32];
fprintf(stderr, "mjn3's trx replacement - v0.81.1\n");
p->magic = STORE32_LE(TRX_MAGIC);
cur_len = sizeof(struct trx_header) - 4; /* assume v1 header */
- p->flag_version = STORE32_LE((trx_version << 16));
in = NULL;
i = 0;
- while ((c = getopt(argc, argv, "-:2o:m:a:b:f:A:")) != -1) {
+ while ((c = getopt(argc, argv, "-:2o:m:a:x:b:f:A:")) != -1) {
switch (c) {
case '2':
/* take care that nothing was written to buf so far */
cur_len += 4;
}
break;
+ case 'F':
+ fsmark = cur_len;
case 'A':
append = 1;
/* fall through */
usage();
}
if (n < cur_len) {
- fprintf(stderr, "WARNING: current length exceeds -b %d offset\n",n);
+ fprintf(stderr, "WARNING: current length exceeds -b %d offset\n",(int) n);
} else {
memset(buf + cur_len, 0, n - cur_len);
cur_len = n;
}
+ break;
+ case 'x':
+ errno = 0;
+ n2 = strtol(optarg, &e, 0);
+ if (errno || (e == optarg) || *e) {
+ fprintf(stderr, "illegal numeric string\n");
+ usage();
+ }
+ if (n2 < 0) {
+ if (-n2 > cur_len) {
+ fprintf(stderr, "WARNING: current length smaller then -x %d offset\n",(int) n2);
+ cur_len = 0;
+ } else
+ cur_len += n2;
+ } else {
+ memset(buf + cur_len, 0, n2);
+ cur_len += n2;
+ }
+
break;
default:
usage();
}
}
+ p->flag_version = STORE32_LE((trx_version << 16));
if (!in) {
fprintf(stderr, "we require atleast one filename\n");
cur_len += ROUND - n;
}
+ /* for TRXv2 set bin-header Flags to 0xFF for CRC calculation like CFE does */
+ if (trx_version == 2) {
+ if(cur_len - p->offsets[3] < sizeof(binheader)) {
+ fprintf(stderr, "TRXv2 binheader too small!\n");
+ return EXIT_FAILURE;
+ }
+ memcpy(binheader, buf + p->offsets[3], sizeof(binheader)); /* save header */
+ memset(buf + p->offsets[3] + 22, 0xFF, 8); /* set stable and try1-3 to 0xFF */
+ }
+
p->crc32 = crc32buf((char *) &p->flag_version,
- cur_len - offsetof(struct trx_header, flag_version));
+ (fsmark)?fsmark:cur_len - offsetof(struct trx_header, flag_version));
p->crc32 = STORE32_LE(p->crc32);
- p->len = STORE32_LE(cur_len);
+ p->len = (fsmark)?fsmark:cur_len - offsetof(struct trx_header, flag_version);
+
+ /* restore TRXv2 bin-header */
+ if (trx_version == 2) {
+ memcpy(buf + p->offsets[3], binheader, sizeof(binheader));
+ }
if (!fwrite(buf, cur_len, 1, out) || fflush(out)) {
fprintf(stderr, "fwrite failed\n");