diff options
| -rw-r--r-- | package/utils/otrx/src/otrx.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/package/utils/otrx/src/otrx.c b/package/utils/otrx/src/otrx.c index 25e0592737..fbdad31912 100644 --- a/package/utils/otrx/src/otrx.c +++ b/package/utils/otrx/src/otrx.c @@ -221,6 +221,184 @@ out: } /************************************************** + * Create + **************************************************/ + +static void otrx_create_parse_options(int argc, char **argv) { +} + +static ssize_t otrx_create_append_file(FILE *trx, const char *in_path) { + FILE *in; + size_t bytes; + ssize_t length = 0; + uint8_t buf[128]; + + in = fopen(in_path, "r"); + if (!in) { + fprintf(stderr, "Couldn't open %s\n", in_path); + return -EACCES; + } + + while ((bytes = fread(buf, 1, sizeof(buf), in)) > 0) { + if (fwrite(buf, 1, bytes, trx) != bytes) { + fprintf(stderr, "Couldn't write %zu B to %s\n", bytes, trx_path); + length = -EIO; + break; + } + length += bytes; + } + + fclose(in); + + return length; +} + +static ssize_t otrx_create_append_zeros(FILE *trx, size_t length) { + uint8_t *buf; + + buf = malloc(length); + if (!buf) + return -ENOMEM; + memset(buf, 0, length); + + if (fwrite(buf, 1, length, trx) != length) { + fprintf(stderr, "Couldn't write %zu B to %s\n", length, trx_path); + return -EIO; + } + + return length; +} + +static ssize_t otrx_create_align(FILE *trx, size_t curr_offset, size_t alignment) { + if (curr_offset & (alignment - 1)) { + size_t length = alignment - (curr_offset % alignment); + return otrx_create_append_zeros(trx, length); + } + + return 0; +} + +static int otrx_create_write_hdr(FILE *trx, struct trx_header *hdr) { + size_t bytes, length; + uint8_t *buf; + uint32_t crc32; + + hdr->magic = cpu_to_le32(TRX_MAGIC); + hdr->version = 1; + + fseek(trx, 0, SEEK_SET); + bytes = fwrite(hdr, 1, sizeof(struct trx_header), trx); + if (bytes != sizeof(struct trx_header)) { + fprintf(stderr, "Couldn't write TRX header to %s\n", trx_path); + return -EIO; + } + + length = le32_to_cpu(hdr->length); + + buf = malloc(length); + if (!buf) { + fprintf(stderr, "Couldn't alloc %zu B buffer\n", length); + return -ENOMEM; + } + + fseek(trx, 0, 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); + return -ENOMEM; + } + + crc32 = otrx_crc32(buf + TRX_FLAGS_OFFSET, length - TRX_FLAGS_OFFSET); + hdr->crc32 = cpu_to_le32(crc32); + + fseek(trx, 0, SEEK_SET); + bytes = fwrite(hdr, 1, sizeof(struct trx_header), trx); + if (bytes != sizeof(struct trx_header)) { + fprintf(stderr, "Couldn't write TRX header to %s\n", trx_path); + return -EIO; + } + + return 0; +} + +static int otrx_create(int argc, char **argv) { + FILE *trx; + struct trx_header hdr = {}; + ssize_t sbytes; + size_t curr_idx = 0; + size_t curr_offset = sizeof(hdr); + int c; + int err = 0; + + if (argc < 3) { + fprintf(stderr, "No TRX file passed\n"); + err = -EINVAL; + goto out; + } + trx_path = argv[2]; + + optind = 3; + otrx_create_parse_options(argc, argv); + + trx = fopen(trx_path, "w+"); + if (!trx) { + fprintf(stderr, "Couldn't open %s\n", trx_path); + err = -EACCES; + goto out; + } + fseek(trx, curr_offset, SEEK_SET); + + optind = 3; + while ((c = getopt(argc, argv, "f:b:")) != -1) { + switch (c) { + case 'f': + if (curr_idx >= TRX_MAX_PARTS) { + err = -ENOSPC; + fprintf(stderr, "Reached TRX partitions limit, no place for %s\n", optarg); + goto err_close; + } + + sbytes = otrx_create_append_file(trx, optarg); + if (sbytes < 0) { + fprintf(stderr, "Failed to append file %s\n", optarg); + } else { + hdr.offset[curr_idx++] = curr_offset; + curr_offset += sbytes; + } + + sbytes = otrx_create_align(trx, curr_offset, 4); + if (sbytes < 0) + fprintf(stderr, "Failed to append zeros\n"); + else + curr_offset += sbytes; + + break; + case 'b': + sbytes = strtol(optarg, NULL, 0) - curr_offset; + if (sbytes < 0) { + fprintf(stderr, "Current TRX length is 0x%zx, can't pad it with zeros to 0x%lx\n", curr_offset, strtol(optarg, NULL, 0)); + } else { + sbytes = otrx_create_append_zeros(trx, sbytes); + if (sbytes < 0) + fprintf(stderr, "Failed to append zeros\n"); + else + curr_offset += sbytes; + } + break; + } + if (err) + break; + } + + hdr.length = curr_offset; + otrx_create_write_hdr(trx, &hdr); +err_close: + fclose(trx); +out: + return err; +} + +/************************************************** * Extract **************************************************/ @@ -363,6 +541,11 @@ static void usage() { printf("\totrx check <file> [options]\tcheck if file is a valid TRX\n"); printf("\t-o offset\t\t\toffset of TRX data in file (default: 0)\n"); printf("\n"); + printf("Creating new TRX file:\n"); + printf("\totrx create <file> [options] [partitions]\n"); + printf("\t-f file\t\t\t\t[partition] start new partition with content copied from file\n"); + printf("\t-b offset\t\t\t[partition] append zeros to partition till reaching absolute offset\n"); + printf("\n"); printf("Extracting from TRX file:\n"); printf("\totrx extract <file> [options]\textract partitions from TRX file\n"); printf("\t-o offset\t\t\toffset of TRX data in file (default: 0)\n"); @@ -375,6 +558,8 @@ int main(int argc, char **argv) { if (argc > 1) { if (!strcmp(argv[1], "check")) return otrx_check(argc, argv); + else if (!strcmp(argv[1], "create")) + return otrx_create(argc, argv); else if (!strcmp(argv[1], "extract")) return otrx_extract(argc, argv); } |