/*
- * Copyright 2016-2017 - Philippe Proulx <pproulx@efficios.com>
+ * SPDX-License-Identifier: MIT
*
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
+ * Copyright 2016-2017 Philippe Proulx <pproulx@efficios.com>
*/
-#define BT_LOG_TAG "PLUGIN-CTF-METADATA-DECODER"
-#include "logging.h"
+#define BT_COMP_LOG_SELF_COMP (mdec->config.self_comp)
+#define BT_LOG_OUTPUT_LEVEL (mdec->config.log_level)
+#define BT_LOG_TAG "PLUGIN/CTF/META/DECODER"
+#include "logging/comp-logging.h"
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <inttypes.h>
#include "common/assert.h"
-#include "compat/uuid.h"
+#include "common/uuid.h"
#include "compat/memstream.h"
#include <babeltrace2/babeltrace.h>
#include <glib.h>
#include "ast.h"
#include "decoder.h"
#include "scanner.h"
+#include "logging.h"
+#include "parser-wrap.h"
#define TSDL_MAGIC 0x75d11d57
-extern
-int yydebug;
-
struct ctf_metadata_decoder {
+ struct ctf_scanner *scanner;
+ GString *text;
struct ctf_visitor_generate_ir *visitor;
- uint8_t uuid[16];
+ bt_uuid_t uuid;
bool is_uuid_set;
int bo;
struct ctf_metadata_decoder_config config;
+ struct meta_log_config log_cfg;
};
struct packet_header {
uint32_t magic;
- uint8_t uuid[16];
+ bt_uuid_t uuid;
uint32_t checksum;
uint32_t content_size;
uint32_t packet_size;
} __attribute__((__packed__));
BT_HIDDEN
-bool ctf_metadata_decoder_is_packetized(FILE *fp, int *byte_order)
+int ctf_metadata_decoder_packetized_file_stream_to_buf(FILE *fp,
+ char **buf, int byte_order, bool *is_uuid_set,
+ uint8_t *uuid, bt_logging_level log_level,
+ bt_self_component *self_comp);
+
+BT_HIDDEN
+int ctf_metadata_decoder_is_packetized(FILE *fp, bool *is_packetized,
+ int *byte_order, bt_logging_level log_level,
+ bt_self_component *self_comp)
{
uint32_t magic;
size_t len;
int ret = 0;
+ *is_packetized = false;
len = fread(&magic, sizeof(magic), 1, fp);
if (len != 1) {
- BT_LOGI_STR("Cannot read first metadata packet header: assuming the stream is not packetized.");
+ BT_COMP_LOG_CUR_LVL(BT_LOG_INFO, log_level, self_comp,
+ "Cannot read first metadata packet header: assuming the stream is not packetized.");
+ ret = -1;
goto end;
}
if (byte_order) {
if (magic == TSDL_MAGIC) {
- ret = 1;
+ *is_packetized = true;
*byte_order = BYTE_ORDER;
} else if (magic == GUINT32_SWAP_LE_BE(TSDL_MAGIC)) {
- ret = 1;
+ *is_packetized = true;
*byte_order = BYTE_ORDER == BIG_ENDIAN ?
LITTLE_ENDIAN : BIG_ENDIAN;
}
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_LOGE_ERRNO("Failed to get current metadata file position",
- ".");
- goto error;
- }
- BT_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_LOGI("Reached end of file: offset=%ld", ftell(in_fp));
- goto end;
- }
- if (readlen < 1) {
- BT_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_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_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_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_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_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_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_LOGE("Cannot read metadata packet buffer: "
- "offset=%ld, read-size=%zu",
- ftell(in_fp), loop_read);
- goto error;
- }
- if (readlen > loop_read) {
- BT_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_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_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)
-{
- 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_LOGE("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_LOGE("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_LOGE("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_LOGE("Cannot close memory stream: %s: mdec-addr=%p",
- strerror(errno), mdec);
- goto error;
- }
-
- goto end;
-
-error:
- ret = -1;
-
- if (out_fp) {
- if (bt_close_memstream(buf, &size, out_fp)) {
- BT_LOGE("Cannot close memory stream: %s: mdec-addr=%p",
- strerror(errno), 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)
-{
- return ctf_metadata_decoder_packetized_file_stream_to_buf_with_mdec(
- NULL, fp, buf, byte_order);
-}
-
BT_HIDDEN
struct ctf_metadata_decoder *ctf_metadata_decoder_create(
- bt_self_component_source *self_comp,
const struct ctf_metadata_decoder_config *config)
{
struct ctf_metadata_decoder *mdec =
g_new0(struct ctf_metadata_decoder, 1);
- struct ctf_metadata_decoder_config default_config = {
- .clock_class_offset_s = 0,
- .clock_class_offset_ns = 0,
- };
-
- if (!config) {
- config = &default_config;
- }
- BT_LOGD("Creating CTF metadata decoder: "
+ BT_ASSERT(config);
+ BT_COMP_LOG_CUR_LVL(BT_LOG_DEBUG, config->log_level, config->self_comp,
+ "Creating CTF metadata decoder: "
"clock-class-offset-s=%" PRId64 ", "
"clock-class-offset-ns=%" PRId64,
config->clock_class_offset_s, config->clock_class_offset_ns);
if (!mdec) {
- BT_LOGE_STR("Failed to allocate one CTF metadata decoder.");
+ BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, config->log_level,
+ config->self_comp,
+ "Failed to allocate one CTF metadata decoder.");
goto end;
}
+ mdec->log_cfg.log_level = config->log_level;
+ mdec->log_cfg.self_comp = config->self_comp;
+ mdec->scanner = ctf_scanner_alloc();
+ if (!mdec->scanner) {
+ BT_COMP_LOGE("Cannot allocate a metadata lexical scanner: "
+ "mdec-addr=%p", mdec);
+ goto error;
+ }
+
+ mdec->text = g_string_new(NULL);
+ if (!mdec->text) {
+ BT_COMP_LOGE("Failed to allocate one GString: "
+ "mdec-addr=%p", mdec);
+ goto error;
+ }
+
+ mdec->bo = -1;
mdec->config = *config;
- mdec->visitor = ctf_visitor_generate_ir_create(self_comp, config);
+ mdec->visitor = ctf_visitor_generate_ir_create(config);
if (!mdec->visitor) {
- BT_LOGE("Failed to create a CTF IR metadata AST visitor: "
+ BT_COMP_LOGE("Failed to create a CTF IR metadata AST visitor: "
"mdec-addr=%p", mdec);
- ctf_metadata_decoder_destroy(mdec);
- mdec = NULL;
- goto end;
+ goto error;
}
- BT_LOGD("Creating CTF metadata decoder: "
+ BT_COMP_LOGD("Creating CTF metadata decoder: "
"clock-class-offset-s=%" PRId64 ", "
"clock-class-offset-ns=%" PRId64 ", addr=%p",
config->clock_class_offset_s, config->clock_class_offset_ns,
mdec);
+ goto end;
+
+error:
+ ctf_metadata_decoder_destroy(mdec);
+ mdec = NULL;
end:
return mdec;
return;
}
- BT_LOGD("Destroying CTF metadata decoder: addr=%p", mdec);
+ if (mdec->scanner) {
+ ctf_scanner_free(mdec->scanner);
+ }
+
+ if (mdec->text) {
+ g_string_free(mdec->text, TRUE);
+ }
+
+ BT_COMP_LOGD("Destroying CTF metadata decoder: addr=%p", mdec);
ctf_visitor_generate_ir_destroy(mdec->visitor);
g_free(mdec);
}
BT_HIDDEN
-enum ctf_metadata_decoder_status ctf_metadata_decoder_decode(
+enum ctf_metadata_decoder_status ctf_metadata_decoder_append_content(
struct ctf_metadata_decoder *mdec, FILE *fp)
{
enum ctf_metadata_decoder_status status =
CTF_METADATA_DECODER_STATUS_OK;
int ret;
- struct ctf_scanner *scanner = NULL;
char *buf = NULL;
bool close_fp = false;
+ long start_pos = -1;
+ bool is_packetized;
BT_ASSERT(mdec);
+ ret = ctf_metadata_decoder_is_packetized(fp, &is_packetized, &mdec->bo,
+ mdec->config.log_level, mdec->config.self_comp);
+ if (ret) {
+ status = CTF_METADATA_DECODER_STATUS_ERROR;
+ goto end;
+ }
- if (ctf_metadata_decoder_is_packetized(fp, &mdec->bo)) {
- BT_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);
+ if (is_packetized) {
+ BT_COMP_LOGI("Metadata stream is packetized: mdec-addr=%p", mdec);
+ 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_LOGE("Cannot decode packetized metadata packets to metadata text: "
+ BT_COMP_LOGE("Cannot decode packetized metadata packets to metadata text: "
"mdec-addr=%p, ret=%d", mdec, ret);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
fp = bt_fmemopen(buf, strlen(buf), "rb");
close_fp = true;
if (!fp) {
- BT_LOGE("Cannot memory-open metadata buffer: %s: "
+ BT_COMP_LOGE("Cannot memory-open metadata buffer: %s: "
"mdec-addr=%p", strerror(errno), mdec);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
ssize_t nr_items;
const long init_pos = ftell(fp);
- BT_LOGI("Metadata stream is plain text: mdec-addr=%p", mdec);
+ BT_COMP_LOGI("Metadata stream is plain text: mdec-addr=%p", mdec);
if (init_pos < 0) {
- BT_LOGE_ERRNO("Failed to get current file position", ".");
+ BT_COMP_LOGE_ERRNO("Failed to get current file position", ".");
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
/* Check text-only metadata header and version */
nr_items = fscanf(fp, "/* CTF %10u.%10u", &major, &minor);
if (nr_items < 2) {
- BT_LOGW("Missing \"/* CTF major.minor\" signature in plain text metadata file stream: "
+ BT_COMP_LOGW("Missing \"/* CTF major.minor\" signature in plain text metadata file stream: "
"mdec-addr=%p", mdec);
}
- BT_LOGI("Found metadata stream version in signature: version=%u.%u", major, minor);
+ BT_COMP_LOGI("Found metadata stream version in signature: version=%u.%u", major, minor);
- if (!is_version_valid(major, minor)) {
- BT_LOGE("Invalid metadata version found in plain text signature: "
+ 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);
status = CTF_METADATA_DECODER_STATUS_INVAL_VERSION;
}
if (fseek(fp, init_pos, SEEK_SET)) {
- BT_LOGE("Cannot seek metadata file stream to initial position: %s: "
+ BT_COMP_LOGE("Cannot seek metadata file stream to initial position: %s: "
"mdec-addr=%p", strerror(errno), mdec);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
}
- if (BT_LOG_ON_VERBOSE) {
+#if YYDEBUG
+ if (BT_LOG_ON_TRACE) {
yydebug = 1;
}
+#endif
- /* Allocate a scanner and append the metadata text content */
- scanner = ctf_scanner_alloc();
- if (!scanner) {
- BT_LOGE("Cannot allocate a metadata lexical scanner: "
- "mdec-addr=%p", mdec);
- status = CTF_METADATA_DECODER_STATUS_ERROR;
- goto end;
+ /* Save the file's position: we'll seek back to append the plain text */
+ BT_ASSERT(fp);
+
+ if (mdec->config.keep_plain_text) {
+ start_pos = ftell(fp);
}
- BT_ASSERT(fp);
- ret = ctf_scanner_append_ast(scanner, fp);
+ /* Append the metadata text content */
+ ret = ctf_scanner_append_ast(mdec->scanner, fp);
if (ret) {
- BT_LOGE("Cannot create the metadata AST out of the metadata text: "
+ BT_COMP_LOGE("Cannot create the metadata AST out of the metadata text: "
"mdec-addr=%p", mdec);
status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
goto end;
}
- ret = ctf_visitor_semantic_check(0, &scanner->ast->root);
+ /* We know it's complete: append plain text */
+ if (mdec->config.keep_plain_text) {
+ BT_ASSERT(start_pos != -1);
+ ret = fseek(fp, start_pos, SEEK_SET);
+ if (ret) {
+ BT_COMP_LOGE("Failed to seek file: ret=%d, mdec-addr=%p",
+ ret, mdec);
+ status = CTF_METADATA_DECODER_STATUS_ERROR;
+ goto end;
+ }
+
+ ret = bt_common_append_file_content_to_g_string(mdec->text, fp);
+ if (ret) {
+ BT_COMP_LOGE("Failed to append to current plain text: "
+ "ret=%d, mdec-addr=%p", ret, mdec);
+ status = CTF_METADATA_DECODER_STATUS_ERROR;
+ goto end;
+ }
+ }
+
+ ret = ctf_visitor_semantic_check(0, &mdec->scanner->ast->root,
+ &mdec->log_cfg);
if (ret) {
- BT_LOGE("Validation of the metadata semantics failed: "
+ BT_COMP_LOGE("Validation of the metadata semantics failed: "
"mdec-addr=%p", mdec);
status = CTF_METADATA_DECODER_STATUS_ERROR;
goto end;
}
- ret = ctf_visitor_generate_ir_visit_node(mdec->visitor,
- &scanner->ast->root);
- switch (ret) {
- case 0:
- /* Success */
- break;
- case -EINCOMPLETE:
- BT_LOGD("While visiting metadata AST: incomplete data: "
- "mdec-addr=%p", mdec);
- status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
- goto end;
- default:
- BT_LOGE("Failed to visit AST node to create CTF IR objects: "
- "mdec-addr=%p, ret=%d", mdec, ret);
- status = CTF_METADATA_DECODER_STATUS_IR_VISITOR_ERROR;
- goto end;
+ if (mdec->config.create_trace_class) {
+ ret = ctf_visitor_generate_ir_visit_node(mdec->visitor,
+ &mdec->scanner->ast->root);
+ switch (ret) {
+ case 0:
+ /* Success */
+ break;
+ case -EINCOMPLETE:
+ BT_COMP_LOGD("While visiting metadata AST: incomplete data: "
+ "mdec-addr=%p", mdec);
+ status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
+ goto end;
+ default:
+ BT_COMP_LOGE("Failed to visit AST node to create CTF IR objects: "
+ "mdec-addr=%p, ret=%d", mdec, ret);
+ status = CTF_METADATA_DECODER_STATUS_IR_VISITOR_ERROR;
+ goto end;
+ }
}
end:
- if (scanner) {
- ctf_scanner_free(scanner);
- }
-
+#if YYDEBUG
yydebug = 0;
+#endif
if (fp && close_fp) {
if (fclose(fp)) {
- BT_LOGE("Cannot close metadata file stream: "
+ BT_COMP_LOGE("Cannot close metadata file stream: "
"mdec-addr=%p", mdec);
}
}
- if (buf) {
- free(buf);
- }
+ free(buf);
return status;
}
bt_trace_class *ctf_metadata_decoder_get_ir_trace_class(
struct ctf_metadata_decoder *mdec)
{
+ BT_ASSERT_DBG(mdec);
+ BT_ASSERT_DBG(mdec->config.create_trace_class);
return ctf_visitor_generate_ir_get_ir_trace_class(mdec->visitor);
}
struct ctf_trace_class *ctf_metadata_decoder_borrow_ctf_trace_class(
struct ctf_metadata_decoder *mdec)
{
+ BT_ASSERT_DBG(mdec);
+ BT_ASSERT_DBG(mdec->config.create_trace_class);
return ctf_visitor_generate_ir_borrow_ctf_trace_class(mdec->visitor);
}
+
+BT_HIDDEN
+const char *ctf_metadata_decoder_get_text(struct ctf_metadata_decoder *mdec)
+{
+ BT_ASSERT_DBG(mdec);
+ BT_ASSERT_DBG(mdec->config.keep_plain_text);
+ return mdec->text->str;
+}
+
+BT_HIDDEN
+int ctf_metadata_decoder_get_byte_order(struct ctf_metadata_decoder *mdec)
+{
+ BT_ASSERT_DBG(mdec);
+ return mdec->bo;
+}
+
+BT_HIDDEN
+int ctf_metadata_decoder_get_uuid(struct ctf_metadata_decoder *mdec,
+ bt_uuid_t uuid)
+{
+ int ret = 0;
+
+ BT_ASSERT_DBG(mdec);
+
+ if (!mdec->is_uuid_set) {
+ ret = -1;
+ goto end;
+ }
+
+ bt_uuid_copy(uuid, mdec->uuid);
+
+end:
+ return ret;
+}
+
+static
+enum ctf_metadata_decoder_status find_uuid_in_trace_decl(
+ struct ctf_metadata_decoder *mdec, struct ctf_node *trace_node,
+ bt_uuid_t uuid)
+{
+ enum ctf_metadata_decoder_status status =
+ CTF_METADATA_DECODER_STATUS_OK;
+ struct ctf_node *entry_node;
+ struct bt_list_head *decl_list = &trace_node->u.trace.declaration_list;
+ char *left = NULL;
+
+ bt_list_for_each_entry(entry_node, decl_list, siblings) {
+ if (entry_node->type == NODE_CTF_EXPRESSION) {
+ int ret;
+
+ left = ctf_ast_concatenate_unary_strings(
+ &entry_node->u.ctf_expression.left);
+ if (!left) {
+ BT_COMP_LOGE("Cannot concatenate unary strings.");
+ status = CTF_METADATA_DECODER_STATUS_ERROR;
+ goto end;
+ }
+
+ if (strcmp(left, "uuid") == 0) {
+ ret = ctf_ast_get_unary_uuid(
+ &entry_node->u.ctf_expression.right,
+ uuid, mdec->config.log_level,
+ mdec->config.self_comp);
+ if (ret) {
+ BT_COMP_LOGE("Invalid trace's `uuid` attribute.");
+ status = CTF_METADATA_DECODER_STATUS_ERROR;
+ goto end;
+ }
+
+ goto end;
+ }
+
+ g_free(left);
+ left = NULL;
+ }
+ }
+
+ status = CTF_METADATA_DECODER_STATUS_NONE;
+
+end:
+ g_free(left);
+ return status;
+}
+
+BT_HIDDEN
+enum ctf_metadata_decoder_status ctf_metadata_decoder_get_trace_class_uuid(
+ struct ctf_metadata_decoder *mdec, bt_uuid_t uuid)
+{
+ enum ctf_metadata_decoder_status status =
+ CTF_METADATA_DECODER_STATUS_INCOMPLETE;
+ struct ctf_node *root_node = &mdec->scanner->ast->root;
+ struct ctf_node *trace_node;
+
+ if (!root_node) {
+ status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
+ goto end;
+ }
+
+ trace_node =
+ bt_list_entry(root_node->u.root.trace.next,
+ struct ctf_node, siblings);
+ if (!trace_node) {
+ status = CTF_METADATA_DECODER_STATUS_INCOMPLETE;
+ goto end;
+ }
+
+ status = find_uuid_in_trace_decl(mdec, trace_node, uuid);
+
+end:
+ return status;
+}
projects / babeltrace.git / blobdiff