diff options
Diffstat (limited to 'package')
| -rw-r--r-- | package/utils/otrx/src/otrx.c | 128 |
1 files changed, 127 insertions, 1 deletions
diff --git a/package/utils/otrx/src/otrx.c b/package/utils/otrx/src/otrx.c index b3cfdfe55b..2f305cf484 100644 --- a/package/utils/otrx/src/otrx.c +++ b/package/utils/otrx/src/otrx.c @@ -27,6 +27,7 @@ #define TRX_MAGIC 0x30524448 #define TRX_FLAGS_OFFSET 12 +#define TRX_MAX_PARTS 3 struct trx_header { uint32_t magic; @@ -40,12 +41,14 @@ struct trx_header { enum mode { MODE_UNKNOWN, MODE_CHECK, + MODE_EXTRACT, }; enum mode mode = MODE_UNKNOWN; char *trx_path; size_t trx_offset = 0; +char *partition[TRX_MAX_PARTS] = {}; /************************************************** * CRC32 @@ -196,21 +199,135 @@ out: } /************************************************** + * Extract + **************************************************/ + +static int otrx_extract_copy(FILE *trx, size_t offset, size_t length, char *out_path) { + FILE *out; + size_t bytes; + uint8_t *buf; + int err = 0; + + out = fopen(out_path, "w"); + if (!out) { + fprintf(stderr, "Couldn't open %s\n", out_path); + err = -EACCES; + goto out; + } + + buf = malloc(length); + if (!buf) { + fprintf(stderr, "Couldn't alloc %zu B buffer\n", length); + err = -ENOMEM; + goto err_close; + } + + fseek(trx, offset, SEEK_SET); + bytes = fread(buf, 1, length, trx); + if (bytes != length) { + fprintf(stderr, "Couldn't read %zu B of data from %s\n", length, trx_path); + err = -ENOMEM; + goto err_free_buf; + }; + + bytes = fwrite(buf, 1, length, out); + if (bytes != length) { + fprintf(stderr, "Couldn't write %zu B to %s\n", length, out_path); + err = -ENOMEM; + goto err_free_buf; + } + + printf("Extracted 0x%zx bytes into %s\n", length, out_path); + +err_free_buf: + free(buf); +err_close: + fclose(out); +out: + return err; +} + +static int otrx_extract() { + FILE *trx; + struct trx_header hdr; + size_t bytes; + int i; + int err = 0; + + trx = fopen(trx_path, "r"); + if (!trx) { + fprintf(stderr, "Couldn't open %s\n", trx_path); + err = -EACCES; + goto out; + } + + fseek(trx, trx_offset, SEEK_SET); + bytes = fread(&hdr, 1, sizeof(hdr), trx); + if (bytes != sizeof(hdr)) { + fprintf(stderr, "Couldn't read %s header\n", trx_path); + err = -EIO; + goto err_close; + } + + if (le32_to_cpu(hdr.magic) != TRX_MAGIC) { + fprintf(stderr, "Invalid TRX magic: 0x%08x\n", le32_to_cpu(hdr.magic)); + err = -EINVAL; + goto err_close; + } + + for (i = 0; i < TRX_MAX_PARTS; i++) { + size_t length; + + if (!partition[i]) + continue; + if (!hdr.offset[i]) { + printf("TRX doesn't contain partition %d, can't extract %s\n", i + 1, partition[i]); + continue; + } + + if (i + 1 >= TRX_MAX_PARTS || !hdr.offset[i + 1]) + length = le32_to_cpu(hdr.length) - le32_to_cpu(hdr.offset[i]); + else + length = le32_to_cpu(hdr.offset[i + 1]) - le32_to_cpu(hdr.offset[i]); + + otrx_extract_copy(trx, trx_offset + le32_to_cpu(hdr.offset[i]), length, partition[i]); + } + +err_close: + fclose(trx); +out: + return err; +} + +/************************************************** * Start **************************************************/ static void parse_options(int argc, char **argv) { int c; - while ((c = getopt(argc, argv, "c:o:")) != -1) { + while ((c = getopt(argc, argv, "c:e:o:1:2:3:")) != -1) { switch (c) { case 'c': mode = MODE_CHECK; trx_path = optarg; break; + case 'e': + mode = MODE_EXTRACT; + trx_path = optarg; + break; case 'o': trx_offset = atoi(optarg); break; + case '1': + partition[0] = optarg; + break; + case '2': + partition[1] = optarg; + break; + case '3': + partition[2] = optarg; + break; } } } @@ -221,6 +338,13 @@ static void usage() { printf("Checking TRX file:\n"); printf("\t-c file\t\tcheck if file is a valid TRX\n"); printf("\t-o offset\toffset of TRX data in file (default: 0)\n"); + printf("\n"); + printf("Extracting from TRX file:\n"); + printf("\t-e file\t\tfile with TRX to extract from\n"); + printf("\t-o offset\toffset of TRX data in file (default: 0)\n"); + printf("\t-1 file\t\tfile to extract 1st partition to (optional)\n"); + printf("\t-2 file\t\tfile to extract 2nd partition to (optional)\n"); + printf("\t-3 file\t\tfile to extract 3rd partition to (optional)\n"); } int main(int argc, char **argv) { @@ -229,6 +353,8 @@ int main(int argc, char **argv) { switch (mode) { case MODE_CHECK: return otrx_check(); + case MODE_EXTRACT: + return otrx_extract(); default: usage(); } |