return ret;
}
-static
-bool is_version_valid(unsigned int major, unsigned int minor)
-{
- return major == 1 && minor == 8;
-}
-
-static
-int decode_packet(struct ctf_metadata_decoder *mdec, FILE *in_fp, FILE *out_fp,
- int byte_order)
-{
- struct packet_header header;
- size_t readlen, writelen, toread;
- uint8_t buf[512 + 1]; /* + 1 for debug-mode \0 */
- int ret = 0;
- const long offset = ftell(in_fp);
-
- if (offset < 0) {
- BT_COMP_LOGE_ERRNO("Failed to get current metadata file position",
- ".");
- goto error;
- }
- BT_COMP_LOGD("Decoding metadata packet: mdec-addr=%p, offset=%ld",
- mdec, offset);
- readlen = fread(&header, sizeof(header), 1, in_fp);
- if (feof(in_fp) != 0) {
- BT_COMP_LOGI("Reached end of file: offset=%ld", ftell(in_fp));
- goto end;
- }
- if (readlen < 1) {
- BT_COMP_LOGE("Cannot decode metadata packet: offset=%ld", offset);
- goto error;
- }
-
- if (byte_order != BYTE_ORDER) {
- header.magic = GUINT32_SWAP_LE_BE(header.magic);
- header.checksum = GUINT32_SWAP_LE_BE(header.checksum);
- header.content_size = GUINT32_SWAP_LE_BE(header.content_size);
- header.packet_size = GUINT32_SWAP_LE_BE(header.packet_size);
- }
-
- if (header.compression_scheme) {
- BT_COMP_LOGE("Metadata packet compression is not supported as of this version: "
- "compression-scheme=%u, offset=%ld",
- (unsigned int) header.compression_scheme, offset);
- goto error;
- }
-
- if (header.encryption_scheme) {
- BT_COMP_LOGE("Metadata packet encryption is not supported as of this version: "
- "encryption-scheme=%u, offset=%ld",
- (unsigned int) header.encryption_scheme, offset);
- goto error;
- }
-
- if (header.checksum || header.checksum_scheme) {
- BT_COMP_LOGE("Metadata packet checksum verification is not supported as of this version: "
- "checksum-scheme=%u, checksum=%x, offset=%ld",
- (unsigned int) header.checksum_scheme, header.checksum,
- offset);
- goto error;
- }
-
- if (!is_version_valid(header.major, header.minor)) {
- BT_COMP_LOGE("Invalid metadata packet version: "
- "version=%u.%u, offset=%ld",
- header.major, header.minor, offset);
- goto error;
- }
-
- /* Set expected trace UUID if not set; otherwise validate it */
- if (mdec) {
- if (!mdec->is_uuid_set) {
- memcpy(mdec->uuid, header.uuid, sizeof(header.uuid));
- mdec->is_uuid_set = true;
- } else if (bt_uuid_compare(header.uuid, mdec->uuid)) {
- BT_COMP_LOGE("Metadata UUID mismatch between packets of the same stream: "
- "packet-uuid=\"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\", "
- "expected-uuid=\"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\", "
- "offset=%ld",
- (unsigned int) header.uuid[0],
- (unsigned int) header.uuid[1],
- (unsigned int) header.uuid[2],
- (unsigned int) header.uuid[3],
- (unsigned int) header.uuid[4],
- (unsigned int) header.uuid[5],
- (unsigned int) header.uuid[6],
- (unsigned int) header.uuid[7],
- (unsigned int) header.uuid[8],
- (unsigned int) header.uuid[9],
- (unsigned int) header.uuid[10],
- (unsigned int) header.uuid[11],
- (unsigned int) header.uuid[12],
- (unsigned int) header.uuid[13],
- (unsigned int) header.uuid[14],
- (unsigned int) header.uuid[15],
- (unsigned int) mdec->uuid[0],
- (unsigned int) mdec->uuid[1],
- (unsigned int) mdec->uuid[2],
- (unsigned int) mdec->uuid[3],
- (unsigned int) mdec->uuid[4],
- (unsigned int) mdec->uuid[5],
- (unsigned int) mdec->uuid[6],
- (unsigned int) mdec->uuid[7],
- (unsigned int) mdec->uuid[8],
- (unsigned int) mdec->uuid[9],
- (unsigned int) mdec->uuid[10],
- (unsigned int) mdec->uuid[11],
- (unsigned int) mdec->uuid[12],
- (unsigned int) mdec->uuid[13],
- (unsigned int) mdec->uuid[14],
- (unsigned int) mdec->uuid[15],
- offset);
- goto error;
- }
- }
-
- if ((header.content_size / CHAR_BIT) < sizeof(header)) {
- BT_COMP_LOGE("Bad metadata packet content size: content-size=%u, "
- "offset=%ld", header.content_size, offset);
- goto error;
- }
-
- toread = header.content_size / CHAR_BIT - sizeof(header);
-
- for (;;) {
- size_t loop_read;
-
- loop_read = MIN(sizeof(buf) - 1, toread);
- readlen = fread(buf, sizeof(uint8_t), loop_read, in_fp);
- if (ferror(in_fp)) {
- BT_COMP_LOGE("Cannot read metadata packet buffer: "
- "offset=%ld, read-size=%zu",
- ftell(in_fp), loop_read);
- goto error;
- }
- if (readlen > loop_read) {
- BT_COMP_LOGE("fread returned more byte than expected: "
- "read-size-asked=%zu, read-size-returned=%zu",
- loop_read, readlen);
- goto error;
- }
-
- writelen = fwrite(buf, sizeof(uint8_t), readlen, out_fp);
- if (writelen < readlen || ferror(out_fp)) {
- BT_COMP_LOGE("Cannot write decoded metadata text to buffer: "
- "read-offset=%ld, write-size=%zu",
- ftell(in_fp), readlen);
- goto error;
- }
-
- toread -= readlen;
- if (toread == 0) {
- int fseek_ret;
-
- /* Read leftover padding */
- toread = (header.packet_size - header.content_size) /
- CHAR_BIT;
- fseek_ret = fseek(in_fp, toread, SEEK_CUR);
- if (fseek_ret < 0) {
- BT_COMP_LOGW_STR("Missing padding at the end of the metadata stream.");
- }
- break;
- }
- }
-
- goto end;
-
-error:
- ret = -1;
-
-end:
- return ret;
-}
-
-static
-int ctf_metadata_decoder_packetized_file_stream_to_buf_with_mdec(
- struct ctf_metadata_decoder *mdec, FILE *fp,
- char **buf, int byte_order, bt_logging_level log_level,
- bt_self_component *self_comp)
-{
- FILE *out_fp;
- size_t size;
- int ret = 0;
- int tret;
- size_t packet_index = 0;
-
- out_fp = bt_open_memstream(buf, &size);
- if (out_fp == NULL) {
- BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_comp,
- "Cannot open memory stream: %s: mdec-addr=%p",
- strerror(errno), mdec);
- goto error;
- }
-
- for (;;) {
- if (feof(fp) != 0) {
- break;
- }
-
- tret = decode_packet(mdec, fp, out_fp, byte_order);
- if (tret) {
- BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_comp,
- "Cannot decode packet: index=%zu, mdec-addr=%p",
- packet_index, mdec);
- goto error;
- }
-
- packet_index++;
- }
-
- /* Make sure the whole string ends with a null character */
- tret = fputc('\0', out_fp);
- if (tret == EOF) {
- BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_comp,
- "Cannot append '\\0' to the decoded metadata buffer: "
- "mdec-addr=%p", mdec);
- goto error;
- }
-
- /* Close stream, which also flushes the buffer */
- ret = bt_close_memstream(buf, &size, out_fp);
- /*
- * See fclose(3). Further access to out_fp after both success
- * and error, even through another bt_close_memstream(), results
- * in undefined behavior. Nullify out_fp to ensure we don't
- * fclose it twice on error.
- */
- out_fp = NULL;
- if (ret < 0) {
- BT_COMP_LOG_ERRNO_CUR_LVL(BT_LOG_ERROR, log_level, self_comp,
- "Cannot close memory stream", ": mdec-addr=%p", mdec);
- goto error;
- }
-
- goto end;
-
-error:
- ret = -1;
-
- if (out_fp) {
- if (bt_close_memstream(buf, &size, out_fp)) {
- BT_COMP_LOG_ERRNO_CUR_LVL(BT_LOG_ERROR, log_level,
- self_comp, "Cannot close memory stream",
- ": mdec-addr=%p", mdec);
- }
- }
-
- if (*buf) {
- free(*buf);
- *buf = NULL;
- }
-
-end:
- return ret;
-}
-
-BT_HIDDEN
-int ctf_metadata_decoder_packetized_file_stream_to_buf(
- FILE *fp, char **buf, int byte_order,
- bt_logging_level log_level,
- bt_self_component *self_comp)
-{
- return ctf_metadata_decoder_packetized_file_stream_to_buf_with_mdec(
- NULL, fp, buf, byte_order, log_level, self_comp);
-}
-
BT_HIDDEN
struct ctf_metadata_decoder *ctf_metadata_decoder_create(
const struct ctf_metadata_decoder_config *config)
if (ctf_metadata_decoder_is_packetized(fp, &mdec->bo,
mdec->config.log_level, mdec->config.self_comp)) {
BT_COMP_LOGI("Metadata stream is packetized: mdec-addr=%p", mdec);
- ret = ctf_metadata_decoder_packetized_file_stream_to_buf_with_mdec(
- mdec, fp, &buf, mdec->bo, mdec->config.log_level,
+ ret = ctf_metadata_decoder_packetized_file_stream_to_buf(fp,
+ &buf, mdec->bo, &mdec->is_uuid_set,
+ mdec->uuid, mdec->config.log_level,
mdec->config.self_comp);
if (ret) {
BT_COMP_LOGE("Cannot decode packetized metadata packets to metadata text: "
BT_COMP_LOGI("Found metadata stream version in signature: version=%u.%u", major, minor);
- if (!is_version_valid(major, minor)) {
+ if (!ctf_metadata_decoder_is_packet_version_valid(major,
+ minor)) {
BT_COMP_LOGE("Invalid metadata version found in plain text signature: "
"version=%u.%u, mdec-addr=%p", major, minor,
mdec);
projects / babeltrace.git / blobdiff