Commit | Line | Data |
---|---|---|
1e649dff | 1 | /* |
0235b0db | 2 | * SPDX-License-Identifier: MIT |
1e649dff | 3 | * |
0235b0db | 4 | * Copyright 2016-2017 Philippe Proulx <pproulx@efficios.com> |
1e649dff PP |
5 | */ |
6 | ||
c802cacb SM |
7 | #include <glib.h> |
8 | #include <inttypes.h> | |
c802cacb SM |
9 | #include <stdint.h> |
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | ||
14 | #include <babeltrace2/babeltrace.h> | |
15 | ||
4164020e | 16 | #define BT_COMP_LOG_SELF_COMP (mdec->config.self_comp) |
50f6fce8 | 17 | #define BT_COMP_LOG_SELF_COMP_CLASS (mdec->config.self_comp_class) |
71436ae4 | 18 | #define BT_LOG_OUTPUT_LEVEL ((enum bt_log_level) mdec->config.log_level) |
4164020e | 19 | #define BT_LOG_TAG "PLUGIN/CTF/META/DECODER" |
c802cacb | 20 | #include "logging.hpp" |
d9c39b0a | 21 | #include "logging/comp-logging.h" |
d6e20753 | 22 | |
578e048b | 23 | #include "common/assert.h" |
6162e6b7 | 24 | #include "common/uuid.h" |
578e048b | 25 | #include "compat/memstream.h" |
1e649dff | 26 | |
087cd0f5 | 27 | #include "ast.hpp" |
c802cacb | 28 | #include "decoder-packetized-file-stream-to-buf.hpp" |
087cd0f5 | 29 | #include "decoder.hpp" |
087cd0f5 | 30 | #include "parser-wrap.hpp" |
c802cacb | 31 | #include "scanner.hpp" |
1e649dff | 32 | |
4164020e SM |
33 | #define TSDL_MAGIC 0x75d11d57 |
34 | ||
35 | struct ctf_metadata_decoder | |
36 | { | |
37 | struct ctf_scanner *scanner; | |
38 | GString *text; | |
39 | struct ctf_visitor_generate_ir *visitor; | |
40 | bt_uuid_t uuid; | |
41 | bool is_uuid_set; | |
42 | int bo; | |
43 | struct ctf_metadata_decoder_config config; | |
44 | struct meta_log_config log_cfg; | |
a4613497 | 45 | bool has_checked_plaintext_signature; |
1e649dff PP |
46 | }; |
47 | ||
4164020e SM |
48 | struct packet_header |
49 | { | |
50 | uint32_t magic; | |
51 | bt_uuid_t uuid; | |
52 | uint32_t checksum; | |
53 | uint32_t content_size; | |
54 | uint32_t packet_size; | |
55 | uint8_t compression_scheme; | |
56 | uint8_t encryption_scheme; | |
57 | uint8_t checksum_scheme; | |
58 | uint8_t major; | |
59 | uint8_t minor; | |
1e649dff PP |
60 | } __attribute__((__packed__)); |
61 | ||
4164020e SM |
62 | int ctf_metadata_decoder_is_packetized(FILE *fp, bool *is_packetized, int *byte_order, |
63 | bt_logging_level log_level, bt_self_component *self_comp) | |
1e649dff | 64 | { |
4164020e SM |
65 | uint32_t magic; |
66 | size_t len; | |
67 | int ret = 0; | |
68 | ||
69 | *is_packetized = false; | |
70 | len = fread(&magic, sizeof(magic), 1, fp); | |
71 | if (len != 1) { | |
72 | BT_COMP_LOG_CUR_LVL( | |
73 | BT_LOG_INFO, log_level, self_comp, | |
74 | "Cannot read first metadata packet header: assuming the stream is not packetized."); | |
75 | ret = -1; | |
76 | goto end; | |
77 | } | |
78 | ||
79 | if (byte_order) { | |
80 | if (magic == TSDL_MAGIC) { | |
81 | *is_packetized = true; | |
82 | *byte_order = BYTE_ORDER; | |
83 | } else if (magic == GUINT32_SWAP_LE_BE(TSDL_MAGIC)) { | |
84 | *is_packetized = true; | |
85 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? LITTLE_ENDIAN : BIG_ENDIAN; | |
86 | } | |
87 | } | |
1e649dff PP |
88 | |
89 | end: | |
4164020e | 90 | rewind(fp); |
1e649dff | 91 | |
4164020e | 92 | return ret; |
1e649dff PP |
93 | } |
94 | ||
4164020e SM |
95 | struct ctf_metadata_decoder * |
96 | ctf_metadata_decoder_create(const struct ctf_metadata_decoder_config *config) | |
1e649dff | 97 | { |
4164020e SM |
98 | struct ctf_metadata_decoder *mdec = g_new0(struct ctf_metadata_decoder, 1); |
99 | ||
100 | BT_ASSERT(config); | |
101 | BT_COMP_LOG_CUR_LVL(BT_LOG_DEBUG, config->log_level, config->self_comp, | |
102 | "Creating CTF metadata decoder: " | |
103 | "clock-class-offset-s=%" PRId64 ", " | |
104 | "clock-class-offset-ns=%" PRId64, | |
105 | config->clock_class_offset_s, config->clock_class_offset_ns); | |
106 | ||
107 | if (!mdec) { | |
108 | BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, config->log_level, config->self_comp, | |
109 | "Failed to allocate one CTF metadata decoder."); | |
110 | goto end; | |
111 | } | |
112 | ||
113 | mdec->log_cfg.log_level = config->log_level; | |
114 | mdec->log_cfg.self_comp = config->self_comp; | |
115 | mdec->log_cfg.self_comp_class = config->self_comp_class; | |
116 | mdec->scanner = ctf_scanner_alloc(); | |
117 | if (!mdec->scanner) { | |
118 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot allocate a metadata lexical scanner: " | |
119 | "mdec-addr=%p", | |
120 | mdec); | |
121 | goto error; | |
122 | } | |
123 | ||
124 | mdec->text = g_string_new(NULL); | |
125 | if (!mdec->text) { | |
126 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Failed to allocate one GString: " | |
127 | "mdec-addr=%p", | |
128 | mdec); | |
129 | goto error; | |
130 | } | |
131 | ||
132 | mdec->bo = -1; | |
133 | mdec->config = *config; | |
134 | mdec->visitor = ctf_visitor_generate_ir_create(config); | |
135 | if (!mdec->visitor) { | |
136 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Failed to create a CTF IR metadata AST visitor: " | |
137 | "mdec-addr=%p", | |
138 | mdec); | |
139 | goto error; | |
140 | } | |
141 | ||
142 | BT_COMP_LOGD("Creating CTF metadata decoder: " | |
143 | "clock-class-offset-s=%" PRId64 ", " | |
144 | "clock-class-offset-ns=%" PRId64 ", addr=%p", | |
145 | config->clock_class_offset_s, config->clock_class_offset_ns, mdec); | |
146 | goto end; | |
06be9946 PP |
147 | |
148 | error: | |
4164020e SM |
149 | ctf_metadata_decoder_destroy(mdec); |
150 | mdec = NULL; | |
d6e20753 | 151 | |
1e649dff | 152 | end: |
4164020e | 153 | return mdec; |
1e649dff PP |
154 | } |
155 | ||
1e649dff PP |
156 | void ctf_metadata_decoder_destroy(struct ctf_metadata_decoder *mdec) |
157 | { | |
4164020e SM |
158 | if (!mdec) { |
159 | return; | |
160 | } | |
1e649dff | 161 | |
4164020e SM |
162 | if (mdec->scanner) { |
163 | ctf_scanner_free(mdec->scanner); | |
164 | } | |
06be9946 | 165 | |
4164020e SM |
166 | if (mdec->text) { |
167 | g_string_free(mdec->text, TRUE); | |
168 | } | |
06be9946 | 169 | |
4164020e SM |
170 | BT_COMP_LOGD("Destroying CTF metadata decoder: addr=%p", mdec); |
171 | ctf_visitor_generate_ir_destroy(mdec->visitor); | |
172 | g_free(mdec); | |
1e649dff PP |
173 | } |
174 | ||
4164020e SM |
175 | enum ctf_metadata_decoder_status |
176 | ctf_metadata_decoder_append_content(struct ctf_metadata_decoder *mdec, FILE *fp) | |
1e649dff | 177 | { |
4164020e SM |
178 | enum ctf_metadata_decoder_status status = CTF_METADATA_DECODER_STATUS_OK; |
179 | int ret; | |
180 | char *buf = NULL; | |
181 | bool close_fp = false; | |
182 | long start_pos = -1; | |
183 | bool is_packetized; | |
184 | ||
185 | BT_ASSERT(mdec); | |
186 | ret = ctf_metadata_decoder_is_packetized(fp, &is_packetized, &mdec->bo, mdec->config.log_level, | |
187 | mdec->config.self_comp); | |
188 | if (ret) { | |
189 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
190 | goto end; | |
191 | } | |
192 | ||
193 | if (is_packetized) { | |
194 | BT_COMP_LOGI("Metadata stream is packetized: mdec-addr=%p", mdec); | |
195 | ret = ctf_metadata_decoder_packetized_file_stream_to_buf( | |
196 | fp, &buf, mdec->bo, &mdec->is_uuid_set, mdec->uuid, mdec->config.log_level, | |
197 | mdec->config.self_comp, mdec->config.self_comp_class); | |
198 | if (ret) { | |
199 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
200 | "Cannot decode packetized metadata packets to metadata text: " | |
201 | "mdec-addr=%p, ret=%d", | |
202 | mdec, ret); | |
203 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
204 | goto end; | |
205 | } | |
206 | ||
207 | if (strlen(buf) == 0) { | |
208 | /* An empty metadata packet is OK. */ | |
209 | goto end; | |
210 | } | |
211 | ||
212 | /* Convert the real file pointer to a memory file pointer */ | |
213 | fp = bt_fmemopen(buf, strlen(buf), "rb"); | |
214 | close_fp = true; | |
215 | if (!fp) { | |
216 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot memory-open metadata buffer: %s: " | |
217 | "mdec-addr=%p", | |
218 | strerror(errno), mdec); | |
219 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
220 | goto end; | |
221 | } | |
a4613497 | 222 | } else if (!mdec->has_checked_plaintext_signature) { |
4164020e SM |
223 | unsigned int major, minor; |
224 | ssize_t nr_items; | |
225 | const long init_pos = ftell(fp); | |
226 | ||
227 | BT_COMP_LOGI("Metadata stream is plain text: mdec-addr=%p", mdec); | |
228 | ||
229 | if (init_pos < 0) { | |
230 | BT_COMP_LOGE_APPEND_CAUSE_ERRNO(BT_COMP_LOG_SELF_COMP, | |
231 | "Failed to get current file position", "."); | |
232 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
233 | goto end; | |
234 | } | |
235 | ||
236 | /* Check text-only metadata header and version */ | |
237 | nr_items = fscanf(fp, "/* CTF %10u.%10u", &major, &minor); | |
238 | if (nr_items < 2) { | |
239 | BT_COMP_LOGW( | |
240 | "Missing \"/* CTF major.minor\" signature in plain text metadata file stream: " | |
241 | "mdec-addr=%p", | |
242 | mdec); | |
243 | } | |
244 | ||
245 | BT_COMP_LOGI("Found metadata stream version in signature: version=%u.%u", major, minor); | |
246 | ||
247 | if (!ctf_metadata_decoder_is_packet_version_valid(major, minor)) { | |
248 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
249 | "Invalid metadata version found in plain text signature: " | |
250 | "version=%u.%u, mdec-addr=%p", | |
251 | major, minor, mdec); | |
252 | status = CTF_METADATA_DECODER_STATUS_INVAL_VERSION; | |
253 | goto end; | |
254 | } | |
255 | ||
256 | if (fseek(fp, init_pos, SEEK_SET)) { | |
257 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
258 | "Cannot seek metadata file stream to initial position: %s: " | |
259 | "mdec-addr=%p", | |
260 | strerror(errno), mdec); | |
261 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
262 | goto end; | |
263 | } | |
a4613497 FD |
264 | |
265 | mdec->has_checked_plaintext_signature = true; | |
4164020e | 266 | } |
1e649dff | 267 | |
9103e903 | 268 | #if YYDEBUG |
4164020e SM |
269 | if (BT_LOG_ON_TRACE) { |
270 | yydebug = 1; | |
271 | } | |
9103e903 | 272 | #endif |
f73367f8 | 273 | |
4164020e SM |
274 | /* Save the file's position: we'll seek back to append the plain text */ |
275 | BT_ASSERT(fp); | |
276 | ||
277 | if (mdec->config.keep_plain_text) { | |
278 | start_pos = ftell(fp); | |
279 | } | |
280 | ||
281 | /* Append the metadata text content */ | |
282 | ret = ctf_scanner_append_ast(mdec->scanner, fp); | |
283 | if (ret) { | |
284 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
285 | "Cannot create the metadata AST out of the metadata text: " | |
286 | "mdec-addr=%p", | |
287 | mdec); | |
288 | status = CTF_METADATA_DECODER_STATUS_INCOMPLETE; | |
289 | goto end; | |
290 | } | |
291 | ||
292 | /* We know it's complete: append plain text */ | |
293 | if (mdec->config.keep_plain_text) { | |
294 | BT_ASSERT(start_pos != -1); | |
295 | ret = fseek(fp, start_pos, SEEK_SET); | |
296 | if (ret) { | |
297 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Failed to seek file: ret=%d, mdec-addr=%p", | |
298 | ret, mdec); | |
299 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
300 | goto end; | |
301 | } | |
302 | ||
303 | ret = bt_common_append_file_content_to_g_string(mdec->text, fp); | |
304 | if (ret) { | |
305 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Failed to append to current plain text: " | |
306 | "ret=%d, mdec-addr=%p", | |
307 | ret, mdec); | |
308 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
309 | goto end; | |
310 | } | |
311 | } | |
312 | ||
313 | ret = ctf_visitor_semantic_check(0, &mdec->scanner->ast->root, &mdec->log_cfg); | |
314 | if (ret) { | |
315 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Validation of the metadata semantics failed: " | |
316 | "mdec-addr=%p", | |
317 | mdec); | |
318 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
319 | goto end; | |
320 | } | |
321 | ||
322 | if (mdec->config.create_trace_class) { | |
323 | ret = ctf_visitor_generate_ir_visit_node(mdec->visitor, &mdec->scanner->ast->root); | |
324 | switch (ret) { | |
325 | case 0: | |
326 | /* Success */ | |
327 | break; | |
328 | case -EINCOMPLETE: | |
329 | BT_COMP_LOGD("While visiting metadata AST: incomplete data: " | |
330 | "mdec-addr=%p", | |
331 | mdec); | |
332 | status = CTF_METADATA_DECODER_STATUS_INCOMPLETE; | |
333 | goto end; | |
334 | default: | |
335 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
336 | "Failed to visit AST node to create CTF IR objects: " | |
337 | "mdec-addr=%p, ret=%d", | |
338 | mdec, ret); | |
339 | status = CTF_METADATA_DECODER_STATUS_IR_VISITOR_ERROR; | |
340 | goto end; | |
341 | } | |
342 | } | |
1e649dff PP |
343 | |
344 | end: | |
9103e903 | 345 | #if YYDEBUG |
4164020e | 346 | yydebug = 0; |
9103e903 | 347 | #endif |
f73367f8 | 348 | |
4164020e SM |
349 | if (fp && close_fp) { |
350 | if (fclose(fp)) { | |
351 | BT_COMP_LOGE("Cannot close metadata file stream: " | |
352 | "mdec-addr=%p", | |
353 | mdec); | |
354 | } | |
355 | } | |
1e649dff | 356 | |
4164020e | 357 | free(buf); |
1e649dff | 358 | |
4164020e | 359 | return status; |
1e649dff PP |
360 | } |
361 | ||
4164020e | 362 | bt_trace_class *ctf_metadata_decoder_get_ir_trace_class(struct ctf_metadata_decoder *mdec) |
44c440bc | 363 | { |
4164020e SM |
364 | BT_ASSERT_DBG(mdec); |
365 | BT_ASSERT_DBG(mdec->config.create_trace_class); | |
366 | return ctf_visitor_generate_ir_get_ir_trace_class(mdec->visitor); | |
44c440bc PP |
367 | } |
368 | ||
4164020e SM |
369 | struct ctf_trace_class * |
370 | ctf_metadata_decoder_borrow_ctf_trace_class(struct ctf_metadata_decoder *mdec) | |
1e649dff | 371 | { |
4164020e SM |
372 | BT_ASSERT_DBG(mdec); |
373 | BT_ASSERT_DBG(mdec->config.create_trace_class); | |
374 | return ctf_visitor_generate_ir_borrow_ctf_trace_class(mdec->visitor); | |
1e649dff | 375 | } |
06be9946 | 376 | |
06be9946 PP |
377 | const char *ctf_metadata_decoder_get_text(struct ctf_metadata_decoder *mdec) |
378 | { | |
4164020e SM |
379 | BT_ASSERT_DBG(mdec); |
380 | BT_ASSERT_DBG(mdec->config.keep_plain_text); | |
381 | return mdec->text->str; | |
06be9946 PP |
382 | } |
383 | ||
06be9946 PP |
384 | int ctf_metadata_decoder_get_byte_order(struct ctf_metadata_decoder *mdec) |
385 | { | |
4164020e SM |
386 | BT_ASSERT_DBG(mdec); |
387 | return mdec->bo; | |
06be9946 PP |
388 | } |
389 | ||
4164020e | 390 | int ctf_metadata_decoder_get_uuid(struct ctf_metadata_decoder *mdec, bt_uuid_t uuid) |
06be9946 | 391 | { |
4164020e | 392 | int ret = 0; |
06be9946 | 393 | |
4164020e | 394 | BT_ASSERT_DBG(mdec); |
06be9946 | 395 | |
4164020e SM |
396 | if (!mdec->is_uuid_set) { |
397 | ret = -1; | |
398 | goto end; | |
399 | } | |
06be9946 | 400 | |
4164020e | 401 | bt_uuid_copy(uuid, mdec->uuid); |
06be9946 PP |
402 | |
403 | end: | |
4164020e | 404 | return ret; |
06be9946 | 405 | } |
1a6da3f9 | 406 | |
4164020e SM |
407 | static enum ctf_metadata_decoder_status find_uuid_in_trace_decl(struct ctf_metadata_decoder *mdec, |
408 | struct ctf_node *trace_node, | |
409 | bt_uuid_t uuid) | |
1a6da3f9 | 410 | { |
4164020e SM |
411 | enum ctf_metadata_decoder_status status = CTF_METADATA_DECODER_STATUS_OK; |
412 | struct ctf_node *entry_node; | |
413 | struct bt_list_head *decl_list = &trace_node->u.trace.declaration_list; | |
414 | char *left = NULL; | |
415 | ||
416 | bt_list_for_each_entry (entry_node, decl_list, siblings) { | |
417 | if (entry_node->type == NODE_CTF_EXPRESSION) { | |
418 | int ret; | |
419 | ||
420 | left = ctf_ast_concatenate_unary_strings(&entry_node->u.ctf_expression.left); | |
421 | if (!left) { | |
422 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot concatenate unary strings."); | |
423 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
424 | goto end; | |
425 | } | |
426 | ||
427 | if (strcmp(left, "uuid") == 0) { | |
428 | ret = ctf_ast_get_unary_uuid(&entry_node->u.ctf_expression.right, uuid, | |
429 | mdec->config.log_level, mdec->config.self_comp); | |
430 | if (ret) { | |
431 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Invalid trace's `uuid` attribute."); | |
432 | status = CTF_METADATA_DECODER_STATUS_ERROR; | |
433 | goto end; | |
434 | } | |
435 | ||
436 | goto end; | |
437 | } | |
438 | ||
439 | g_free(left); | |
440 | left = NULL; | |
441 | } | |
442 | } | |
443 | ||
444 | status = CTF_METADATA_DECODER_STATUS_NONE; | |
1a6da3f9 PP |
445 | |
446 | end: | |
4164020e SM |
447 | g_free(left); |
448 | return status; | |
1a6da3f9 PP |
449 | } |
450 | ||
4164020e SM |
451 | enum ctf_metadata_decoder_status |
452 | ctf_metadata_decoder_get_trace_class_uuid(struct ctf_metadata_decoder *mdec, bt_uuid_t uuid) | |
1a6da3f9 | 453 | { |
4164020e SM |
454 | enum ctf_metadata_decoder_status status = CTF_METADATA_DECODER_STATUS_INCOMPLETE; |
455 | struct ctf_node *root_node = &mdec->scanner->ast->root; | |
456 | struct ctf_node *trace_node; | |
457 | ||
458 | if (!root_node) { | |
459 | status = CTF_METADATA_DECODER_STATUS_INCOMPLETE; | |
460 | goto end; | |
461 | } | |
462 | ||
463 | trace_node = bt_list_entry(root_node->u.root.trace.next, struct ctf_node, siblings); | |
464 | if (!trace_node) { | |
465 | status = CTF_METADATA_DECODER_STATUS_INCOMPLETE; | |
466 | goto end; | |
467 | } | |
468 | ||
469 | status = find_uuid_in_trace_decl(mdec, trace_node, uuid); | |
1a6da3f9 PP |
470 | |
471 | end: | |
4164020e | 472 | return status; |
1a6da3f9 | 473 | } |