Commit | Line | Data |
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683d081a JR |
1 | /* |
2 | * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
683d081a JR |
8 | #include <common/error.h> |
9 | #include <common/macros.h> | |
6a751b95 | 10 | #include <common/mi-lttng.h> |
38114013 | 11 | #include <inttypes.h> |
7c920b63 | 12 | #include <limits.h> |
683d081a | 13 | #include <lttng/condition/condition-internal.h> |
670a26e4 JR |
14 | #include <lttng/condition/event-rule-matches-internal.h> |
15 | #include <lttng/condition/event-rule-matches.h> | |
38114013 PP |
16 | #include <lttng/event-expr-internal.h> |
17 | #include <lttng/event-expr.h> | |
7c920b63 PP |
18 | #include <lttng/event-field-value-internal.h> |
19 | #include <lttng/event-rule/event-rule-internal.h> | |
834966af | 20 | #include <lttng/lttng-error.h> |
683d081a | 21 | #include <stdbool.h> |
38114013 | 22 | #include <stdint.h> |
116a02e3 | 23 | #include <vendor/msgpack/msgpack.h> |
683d081a | 24 | |
8dbb86b8 JR |
25 | #define IS_EVENT_RULE_MATCHES_CONDITION(condition) \ |
26 | (lttng_condition_get_type(condition) == \ | |
27 | LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES) | |
683d081a | 28 | |
8dbb86b8 JR |
29 | static bool is_event_rule_matches_evaluation( |
30 | const struct lttng_evaluation *evaluation) | |
683d081a JR |
31 | { |
32 | enum lttng_condition_type type = lttng_evaluation_get_type(evaluation); | |
33 | ||
8dbb86b8 | 34 | return type == LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES; |
683d081a JR |
35 | } |
36 | ||
8dbb86b8 | 37 | static bool lttng_condition_event_rule_matches_validate( |
683d081a | 38 | const struct lttng_condition *condition); |
8dbb86b8 | 39 | static int lttng_condition_event_rule_matches_serialize( |
683d081a JR |
40 | const struct lttng_condition *condition, |
41 | struct lttng_payload *payload); | |
8dbb86b8 | 42 | static bool lttng_condition_event_rule_matches_is_equal( |
683d081a JR |
43 | const struct lttng_condition *_a, |
44 | const struct lttng_condition *_b); | |
8dbb86b8 | 45 | static void lttng_condition_event_rule_matches_destroy( |
683d081a JR |
46 | struct lttng_condition *condition); |
47 | ||
8dbb86b8 | 48 | static bool lttng_condition_event_rule_matches_validate( |
683d081a JR |
49 | const struct lttng_condition *condition) |
50 | { | |
51 | bool valid = false; | |
8dbb86b8 | 52 | struct lttng_condition_event_rule_matches *event_rule; |
683d081a JR |
53 | |
54 | if (!condition) { | |
55 | goto end; | |
56 | } | |
57 | ||
8dbb86b8 JR |
58 | event_rule = container_of(condition, |
59 | struct lttng_condition_event_rule_matches, parent); | |
683d081a | 60 | if (!event_rule->rule) { |
d602bd6a | 61 | ERR("Invalid on event condition: a rule must be set"); |
683d081a JR |
62 | goto end; |
63 | } | |
64 | ||
65 | valid = lttng_event_rule_validate(event_rule->rule); | |
66 | end: | |
67 | return valid; | |
68 | } | |
69 | ||
7c920b63 PP |
70 | static const char *msgpack_object_type_str(msgpack_object_type type) |
71 | { | |
72 | const char *name; | |
73 | ||
74 | switch (type) { | |
75 | case MSGPACK_OBJECT_NIL: | |
76 | name = "MSGPACK_OBJECT_NIL"; | |
77 | break; | |
78 | case MSGPACK_OBJECT_BOOLEAN: | |
79 | name = "MSGPACK_OBJECT_BOOLEAN"; | |
80 | break; | |
81 | case MSGPACK_OBJECT_POSITIVE_INTEGER: | |
82 | name = "MSGPACK_OBJECT_POSITIVE_INTEGER"; | |
83 | break; | |
84 | case MSGPACK_OBJECT_NEGATIVE_INTEGER: | |
85 | name = "MSGPACK_OBJECT_NEGATIVE_INTEGER"; | |
86 | break; | |
87 | case MSGPACK_OBJECT_FLOAT32: | |
88 | name = "MSGPACK_OBJECT_FLOAT32"; | |
89 | break; | |
90 | case MSGPACK_OBJECT_FLOAT: | |
91 | /* Same value as MSGPACK_OBJECT_FLOAT64 */ | |
92 | name = "MSGPACK_OBJECT_FLOAT(64)"; | |
93 | break; | |
94 | case MSGPACK_OBJECT_STR: | |
95 | name = "MSGPACK_OBJECT_STR"; | |
96 | break; | |
97 | case MSGPACK_OBJECT_ARRAY: | |
98 | name = "MSGPACK_OBJECT_ARRAY"; | |
99 | break; | |
100 | case MSGPACK_OBJECT_MAP: | |
101 | name = "MSGPACK_OBJECT_MAP"; | |
102 | break; | |
103 | case MSGPACK_OBJECT_BIN: | |
104 | name = "MSGPACK_OBJECT_BIN"; | |
105 | break; | |
106 | case MSGPACK_OBJECT_EXT: | |
107 | name = "MSGPACK_OBJECT_EXT"; | |
108 | break; | |
109 | default: | |
110 | abort(); | |
111 | } | |
112 | ||
113 | return name; | |
114 | } | |
115 | ||
38114013 PP |
116 | /* |
117 | * Serializes the C string `str` into `buf`. | |
118 | * | |
119 | * Encoding is the length of `str` plus one (for the null character), | |
120 | * and then the string, including its null terminator. | |
121 | */ | |
122 | static | |
123 | int serialize_cstr(const char *str, struct lttng_dynamic_buffer *buf) | |
124 | { | |
125 | int ret; | |
126 | const uint32_t len = strlen(str) + 1; | |
127 | ||
128 | /* Serialize the length, including the null terminator. */ | |
129 | DBG("Serializing C string's length (including null terminator): " | |
130 | "%" PRIu32, len); | |
131 | ret = lttng_dynamic_buffer_append(buf, &len, sizeof(len)); | |
132 | if (ret) { | |
133 | goto end; | |
134 | } | |
135 | ||
136 | /* Serialize the string. */ | |
137 | DBG("Serializing C string: '%s'", str); | |
138 | ret = lttng_dynamic_buffer_append(buf, str, len); | |
139 | if (ret) { | |
140 | goto end; | |
141 | } | |
142 | ||
143 | end: | |
144 | return ret; | |
145 | } | |
146 | ||
147 | /* | |
148 | * Serializes the event expression `expr` into `buf`. | |
149 | */ | |
150 | static | |
151 | int serialize_event_expr(const struct lttng_event_expr *expr, | |
152 | struct lttng_payload *payload) | |
153 | { | |
154 | const uint8_t type = expr->type; | |
155 | int ret; | |
156 | ||
157 | /* Serialize the expression's type. */ | |
158 | DBG("Serializing event expression's type: %d", expr->type); | |
159 | ret = lttng_dynamic_buffer_append(&payload->buffer, &type, sizeof(type)); | |
160 | if (ret) { | |
161 | goto end; | |
162 | } | |
163 | ||
164 | /* Serialize the expression */ | |
165 | switch (expr->type) { | |
166 | case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD: | |
167 | case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD: | |
168 | { | |
169 | const struct lttng_event_expr_field *field_expr = | |
170 | container_of(expr, | |
171 | const struct lttng_event_expr_field, | |
172 | parent); | |
173 | ||
174 | /* Serialize the field name. */ | |
175 | DBG("Serializing field event expression's field name: '%s'", | |
176 | field_expr->name); | |
177 | ret = serialize_cstr(field_expr->name, &payload->buffer); | |
178 | if (ret) { | |
179 | goto end; | |
180 | } | |
181 | ||
182 | break; | |
183 | } | |
184 | case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD: | |
185 | { | |
186 | const struct lttng_event_expr_app_specific_context_field *field_expr = | |
187 | container_of(expr, | |
188 | const struct lttng_event_expr_app_specific_context_field, | |
189 | parent); | |
190 | ||
191 | /* Serialize the provider name. */ | |
192 | DBG("Serializing app-specific context field event expression's " | |
193 | "provider name: '%s'", | |
194 | field_expr->provider_name); | |
195 | ret = serialize_cstr(field_expr->provider_name, &payload->buffer); | |
196 | if (ret) { | |
197 | goto end; | |
198 | } | |
199 | ||
200 | /* Serialize the type name. */ | |
201 | DBG("Serializing app-specific context field event expression's " | |
202 | "type name: '%s'", | |
203 | field_expr->provider_name); | |
204 | ret = serialize_cstr(field_expr->type_name, &payload->buffer); | |
205 | if (ret) { | |
206 | goto end; | |
207 | } | |
208 | ||
209 | break; | |
210 | } | |
211 | case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT: | |
212 | { | |
213 | const struct lttng_event_expr_array_field_element *elem_expr = | |
214 | container_of(expr, | |
215 | const struct lttng_event_expr_array_field_element, | |
216 | parent); | |
217 | const uint32_t index = elem_expr->index; | |
218 | ||
219 | /* Serialize the index. */ | |
220 | DBG("Serializing array field element event expression's " | |
221 | "index: %u", elem_expr->index); | |
222 | ret = lttng_dynamic_buffer_append(&payload->buffer, &index, sizeof(index)); | |
223 | if (ret) { | |
224 | goto end; | |
225 | } | |
226 | ||
227 | /* Serialize the parent array field expression. */ | |
228 | DBG("Serializing array field element event expression's " | |
7c920b63 | 229 | "parent array field event expression"); |
38114013 PP |
230 | ret = serialize_event_expr(elem_expr->array_field_expr, payload); |
231 | if (ret) { | |
232 | goto end; | |
233 | } | |
234 | ||
235 | break; | |
236 | } | |
237 | default: | |
238 | break; | |
239 | } | |
240 | ||
241 | end: | |
242 | return ret; | |
243 | } | |
244 | ||
8dbb86b8 JR |
245 | static struct lttng_capture_descriptor * |
246 | lttng_condition_event_rule_matches_get_internal_capture_descriptor_at_index( | |
6fb7c690 JR |
247 | const struct lttng_condition *condition, unsigned int index) |
248 | { | |
8dbb86b8 JR |
249 | const struct lttng_condition_event_rule_matches |
250 | *event_rule_matches_cond = container_of(condition, | |
251 | const struct lttng_condition_event_rule_matches, | |
252 | parent); | |
6fb7c690 JR |
253 | struct lttng_capture_descriptor *desc = NULL; |
254 | unsigned int count; | |
255 | enum lttng_condition_status status; | |
256 | ||
8dbb86b8 | 257 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition)) { |
6fb7c690 JR |
258 | goto end; |
259 | } | |
260 | ||
8dbb86b8 | 261 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( |
6fb7c690 JR |
262 | condition, &count); |
263 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
264 | goto end; | |
265 | } | |
266 | ||
267 | if (index >= count) { | |
268 | goto end; | |
269 | } | |
270 | ||
271 | desc = lttng_dynamic_pointer_array_get_pointer( | |
8dbb86b8 | 272 | &event_rule_matches_cond->capture_descriptors, index); |
6fb7c690 JR |
273 | end: |
274 | return desc; | |
275 | } | |
276 | ||
8dbb86b8 | 277 | static int lttng_condition_event_rule_matches_serialize( |
683d081a JR |
278 | const struct lttng_condition *condition, |
279 | struct lttng_payload *payload) | |
280 | { | |
281 | int ret; | |
8dbb86b8 | 282 | struct lttng_condition_event_rule_matches *event_rule_matches_condition; |
0912b5ea | 283 | enum lttng_condition_status status; |
38114013 PP |
284 | /* Used for iteration and communication (size matters). */ |
285 | uint32_t i, capture_descr_count; | |
683d081a | 286 | |
8dbb86b8 | 287 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition)) { |
683d081a JR |
288 | ret = -1; |
289 | goto end; | |
290 | } | |
291 | ||
d602bd6a | 292 | DBG("Serializing on event condition"); |
8dbb86b8 JR |
293 | event_rule_matches_condition = container_of(condition, |
294 | struct lttng_condition_event_rule_matches, parent); | |
683d081a | 295 | |
d602bd6a | 296 | DBG("Serializing on event condition's event rule"); |
8dbb86b8 JR |
297 | ret = lttng_event_rule_serialize( |
298 | event_rule_matches_condition->rule, payload); | |
683d081a JR |
299 | if (ret) { |
300 | goto end; | |
301 | } | |
302 | ||
8dbb86b8 | 303 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( |
0912b5ea JR |
304 | condition, &capture_descr_count); |
305 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
306 | ret = -1; | |
307 | goto end; | |
308 | }; | |
309 | ||
d602bd6a | 310 | DBG("Serializing on event condition's capture descriptor count: %" PRIu32, |
38114013 PP |
311 | capture_descr_count); |
312 | ret = lttng_dynamic_buffer_append(&payload->buffer, &capture_descr_count, | |
313 | sizeof(capture_descr_count)); | |
683d081a JR |
314 | if (ret) { |
315 | goto end; | |
316 | } | |
317 | ||
38114013 | 318 | for (i = 0; i < capture_descr_count; i++) { |
6fb7c690 | 319 | const struct lttng_capture_descriptor *desc = |
8dbb86b8 | 320 | lttng_condition_event_rule_matches_get_internal_capture_descriptor_at_index( |
0912b5ea | 321 | condition, i); |
38114013 | 322 | |
d602bd6a | 323 | DBG("Serializing on event condition's capture descriptor %" PRIu32, |
38114013 | 324 | i); |
6fb7c690 | 325 | ret = serialize_event_expr(desc->event_expression, payload); |
38114013 PP |
326 | if (ret) { |
327 | goto end; | |
328 | } | |
329 | } | |
683d081a JR |
330 | |
331 | end: | |
332 | return ret; | |
333 | } | |
334 | ||
38114013 PP |
335 | static |
336 | bool capture_descriptors_are_equal( | |
0912b5ea JR |
337 | const struct lttng_condition *condition_a, |
338 | const struct lttng_condition *condition_b) | |
38114013 PP |
339 | { |
340 | bool is_equal = true; | |
0912b5ea JR |
341 | unsigned int capture_descr_count_a; |
342 | unsigned int capture_descr_count_b; | |
38114013 | 343 | size_t i; |
0912b5ea | 344 | enum lttng_condition_status status; |
38114013 | 345 | |
8dbb86b8 | 346 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( |
0912b5ea JR |
347 | condition_a, &capture_descr_count_a); |
348 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
349 | goto not_equal; | |
350 | } | |
351 | ||
8dbb86b8 | 352 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( |
0912b5ea JR |
353 | condition_b, &capture_descr_count_b); |
354 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
355 | goto not_equal; | |
356 | } | |
38114013 PP |
357 | |
358 | if (capture_descr_count_a != capture_descr_count_b) { | |
359 | goto not_equal; | |
360 | } | |
361 | ||
362 | for (i = 0; i < capture_descr_count_a; i++) { | |
363 | const struct lttng_event_expr *expr_a = | |
8dbb86b8 JR |
364 | lttng_condition_event_rule_matches_get_capture_descriptor_at_index( |
365 | condition_a, i); | |
38114013 | 366 | const struct lttng_event_expr *expr_b = |
8dbb86b8 JR |
367 | lttng_condition_event_rule_matches_get_capture_descriptor_at_index( |
368 | condition_b, i); | |
38114013 PP |
369 | |
370 | if (!lttng_event_expr_is_equal(expr_a, expr_b)) { | |
371 | goto not_equal; | |
372 | } | |
373 | } | |
374 | ||
375 | goto end; | |
376 | ||
377 | not_equal: | |
378 | is_equal = false; | |
379 | ||
380 | end: | |
381 | return is_equal; | |
382 | } | |
383 | ||
8dbb86b8 | 384 | static bool lttng_condition_event_rule_matches_is_equal( |
683d081a JR |
385 | const struct lttng_condition *_a, |
386 | const struct lttng_condition *_b) | |
387 | { | |
388 | bool is_equal = false; | |
8dbb86b8 | 389 | struct lttng_condition_event_rule_matches *a, *b; |
683d081a | 390 | |
8dbb86b8 JR |
391 | a = container_of(_a, struct lttng_condition_event_rule_matches, parent); |
392 | b = container_of(_b, struct lttng_condition_event_rule_matches, parent); | |
683d081a JR |
393 | |
394 | /* Both event rules must be set or both must be unset. */ | |
395 | if ((a->rule && !b->rule) || (!a->rule && b->rule)) { | |
396 | WARN("Comparing event_rule conditions with uninitialized rule"); | |
397 | goto end; | |
398 | } | |
399 | ||
400 | is_equal = lttng_event_rule_is_equal(a->rule, b->rule); | |
38114013 PP |
401 | if (!is_equal) { |
402 | goto end; | |
403 | } | |
404 | ||
0912b5ea | 405 | is_equal = capture_descriptors_are_equal(_a, _b); |
38114013 | 406 | |
683d081a JR |
407 | end: |
408 | return is_equal; | |
409 | } | |
410 | ||
8dbb86b8 | 411 | static void lttng_condition_event_rule_matches_destroy( |
683d081a JR |
412 | struct lttng_condition *condition) |
413 | { | |
8dbb86b8 | 414 | struct lttng_condition_event_rule_matches *event_rule_matches_condition; |
683d081a | 415 | |
8dbb86b8 JR |
416 | event_rule_matches_condition = container_of(condition, |
417 | struct lttng_condition_event_rule_matches, parent); | |
683d081a | 418 | |
8dbb86b8 JR |
419 | lttng_event_rule_put(event_rule_matches_condition->rule); |
420 | lttng_dynamic_pointer_array_reset( | |
421 | &event_rule_matches_condition->capture_descriptors); | |
422 | free(event_rule_matches_condition); | |
683d081a JR |
423 | } |
424 | ||
38114013 | 425 | static |
0912b5ea | 426 | void destroy_capture_descriptor(void *ptr) |
38114013 | 427 | { |
0912b5ea JR |
428 | struct lttng_capture_descriptor *desc = |
429 | (struct lttng_capture_descriptor *) ptr; | |
430 | ||
431 | lttng_event_expr_destroy(desc->event_expression); | |
432 | free(desc->bytecode); | |
433 | free(desc); | |
38114013 PP |
434 | } |
435 | ||
6a751b95 JR |
436 | static enum lttng_error_code lttng_condition_event_rule_matches_mi_serialize( |
437 | const struct lttng_condition *condition, | |
438 | struct mi_writer *writer) | |
439 | { | |
440 | int ret; | |
441 | enum lttng_error_code ret_code; | |
442 | enum lttng_condition_status status; | |
443 | const struct lttng_event_rule *rule = NULL; | |
444 | unsigned int capture_descriptor_count, i; | |
445 | ||
a0377dfe FD |
446 | LTTNG_ASSERT(condition); |
447 | LTTNG_ASSERT(writer); | |
448 | LTTNG_ASSERT(IS_EVENT_RULE_MATCHES_CONDITION(condition)); | |
6a751b95 JR |
449 | |
450 | status = lttng_condition_event_rule_matches_get_rule(condition, &rule); | |
a0377dfe FD |
451 | LTTNG_ASSERT(status == LTTNG_CONDITION_STATUS_OK); |
452 | LTTNG_ASSERT(rule != NULL); | |
6a751b95 JR |
453 | |
454 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( | |
455 | condition, &capture_descriptor_count); | |
a0377dfe | 456 | LTTNG_ASSERT(status == LTTNG_CONDITION_STATUS_OK); |
6a751b95 JR |
457 | |
458 | /* Open condition event rule matches element. */ | |
459 | ret = mi_lttng_writer_open_element( | |
460 | writer, mi_lttng_element_condition_event_rule_matches); | |
461 | if (ret) { | |
462 | goto mi_error; | |
463 | } | |
464 | ||
465 | /* Serialize the event rule. */ | |
466 | ret_code = lttng_event_rule_mi_serialize(rule, writer); | |
467 | if (ret_code != LTTNG_OK) { | |
468 | goto end; | |
469 | } | |
470 | ||
471 | /* Open the capture descriptors element. */ | |
472 | ret = mi_lttng_writer_open_element( | |
473 | writer, mi_lttng_element_capture_descriptors); | |
474 | if (ret) { | |
475 | goto mi_error; | |
476 | } | |
477 | ||
478 | for (i = 0; i < capture_descriptor_count; i++) { | |
479 | const struct lttng_event_expr *descriptor = NULL; | |
480 | ||
481 | descriptor = lttng_condition_event_rule_matches_get_capture_descriptor_at_index( | |
482 | condition, i); | |
a0377dfe | 483 | LTTNG_ASSERT(descriptor); |
6a751b95 JR |
484 | |
485 | ret_code = lttng_event_expr_mi_serialize(descriptor, writer); | |
486 | if (ret_code != LTTNG_OK) { | |
487 | goto end; | |
488 | } | |
489 | } | |
490 | ||
491 | /* Close capture descriptors element. */ | |
492 | ret = mi_lttng_writer_close_element(writer); | |
493 | if (ret) { | |
494 | goto mi_error; | |
495 | } | |
496 | ||
497 | /* Close condition_event_rule_matches. */ | |
498 | ret = mi_lttng_writer_close_element(writer); | |
499 | if (ret) { | |
500 | goto mi_error; | |
501 | } | |
502 | ret_code = LTTNG_OK; | |
503 | goto end; | |
504 | ||
505 | mi_error: | |
506 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
507 | end: | |
508 | return ret_code; | |
509 | } | |
510 | ||
8dbb86b8 | 511 | struct lttng_condition *lttng_condition_event_rule_matches_create( |
683d081a JR |
512 | struct lttng_event_rule *rule) |
513 | { | |
514 | struct lttng_condition *parent = NULL; | |
8dbb86b8 | 515 | struct lttng_condition_event_rule_matches *condition = NULL; |
683d081a JR |
516 | |
517 | if (!rule) { | |
518 | goto end; | |
519 | } | |
520 | ||
8dbb86b8 | 521 | condition = zmalloc(sizeof(struct lttng_condition_event_rule_matches)); |
683d081a JR |
522 | if (!condition) { |
523 | return NULL; | |
524 | } | |
525 | ||
526 | lttng_condition_init(&condition->parent, | |
8dbb86b8 JR |
527 | LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES); |
528 | condition->parent.validate = | |
529 | lttng_condition_event_rule_matches_validate, | |
530 | condition->parent.serialize = | |
531 | lttng_condition_event_rule_matches_serialize, | |
532 | condition->parent.equal = lttng_condition_event_rule_matches_is_equal, | |
533 | condition->parent.destroy = lttng_condition_event_rule_matches_destroy, | |
6a751b95 | 534 | condition->parent.mi_serialize = lttng_condition_event_rule_matches_mi_serialize, |
683d081a JR |
535 | |
536 | lttng_event_rule_get(rule); | |
537 | condition->rule = rule; | |
538 | rule = NULL; | |
539 | ||
38114013 | 540 | lttng_dynamic_pointer_array_init(&condition->capture_descriptors, |
0912b5ea | 541 | destroy_capture_descriptor); |
38114013 | 542 | |
683d081a JR |
543 | parent = &condition->parent; |
544 | end: | |
545 | return parent; | |
546 | } | |
547 | ||
38114013 PP |
548 | static |
549 | uint64_t uint_from_buffer(const struct lttng_buffer_view *view, size_t size, | |
550 | size_t *offset) | |
551 | { | |
552 | uint64_t ret; | |
553 | const struct lttng_buffer_view uint_view = | |
554 | lttng_buffer_view_from_view(view, *offset, size); | |
555 | ||
556 | if (!lttng_buffer_view_is_valid(&uint_view)) { | |
557 | ret = UINT64_C(-1); | |
558 | goto end; | |
559 | } | |
560 | ||
561 | switch (size) { | |
562 | case 1: | |
563 | ret = (uint64_t) *uint_view.data; | |
564 | break; | |
565 | case sizeof(uint32_t): | |
566 | { | |
567 | uint32_t u32; | |
568 | ||
569 | memcpy(&u32, uint_view.data, sizeof(u32)); | |
570 | ret = (uint64_t) u32; | |
571 | break; | |
572 | } | |
573 | case sizeof(ret): | |
574 | memcpy(&ret, uint_view.data, sizeof(ret)); | |
575 | break; | |
576 | default: | |
577 | abort(); | |
578 | } | |
579 | ||
580 | *offset += size; | |
581 | ||
582 | end: | |
583 | return ret; | |
584 | } | |
585 | ||
586 | static | |
587 | const char *str_from_buffer(const struct lttng_buffer_view *view, | |
588 | size_t *offset) | |
589 | { | |
590 | uint64_t len; | |
591 | const char *ret; | |
592 | ||
593 | len = uint_from_buffer(view, sizeof(uint32_t), offset); | |
594 | if (len == UINT64_C(-1)) { | |
595 | goto error; | |
596 | } | |
597 | ||
598 | ret = &view->data[*offset]; | |
599 | ||
600 | if (!lttng_buffer_view_contains_string(view, ret, len)) { | |
601 | goto error; | |
602 | } | |
603 | ||
604 | *offset += len; | |
605 | goto end; | |
606 | ||
607 | error: | |
608 | ret = NULL; | |
609 | ||
610 | end: | |
611 | return ret; | |
612 | } | |
613 | ||
614 | static | |
615 | struct lttng_event_expr *event_expr_from_payload( | |
616 | struct lttng_payload_view *view, size_t *offset) | |
617 | { | |
618 | struct lttng_event_expr *expr = NULL; | |
619 | const char *str; | |
620 | uint64_t type; | |
621 | ||
622 | type = uint_from_buffer(&view->buffer, sizeof(uint8_t), offset); | |
623 | if (type == UINT64_C(-1)) { | |
624 | goto error; | |
625 | } | |
626 | ||
627 | switch (type) { | |
628 | case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD: | |
629 | str = str_from_buffer(&view->buffer, offset); | |
630 | if (!str) { | |
631 | goto error; | |
632 | } | |
633 | ||
634 | expr = lttng_event_expr_event_payload_field_create(str); | |
635 | break; | |
636 | case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD: | |
637 | str = str_from_buffer(&view->buffer, offset); | |
638 | if (!str) { | |
639 | goto error; | |
640 | } | |
641 | ||
642 | expr = lttng_event_expr_channel_context_field_create(str); | |
643 | break; | |
644 | case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD: | |
645 | { | |
646 | const char *provider_name; | |
647 | const char *type_name; | |
648 | ||
649 | provider_name = str_from_buffer(&view->buffer, offset); | |
650 | if (!provider_name) { | |
651 | goto error; | |
652 | } | |
653 | ||
654 | type_name = str_from_buffer(&view->buffer, offset); | |
655 | if (!type_name) { | |
656 | goto error; | |
657 | } | |
658 | ||
659 | expr = lttng_event_expr_app_specific_context_field_create( | |
660 | provider_name, type_name); | |
661 | break; | |
662 | } | |
663 | case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT: | |
664 | { | |
665 | struct lttng_event_expr *array_field_expr; | |
666 | const uint64_t index = uint_from_buffer( | |
667 | &view->buffer, sizeof(uint32_t), offset); | |
668 | ||
669 | if (index == UINT64_C(-1)) { | |
670 | goto error; | |
671 | } | |
672 | ||
673 | /* Array field expression is the encoded after this. */ | |
674 | array_field_expr = event_expr_from_payload(view, offset); | |
675 | if (!array_field_expr) { | |
676 | goto error; | |
677 | } | |
678 | ||
679 | /* Move ownership of `array_field_expr` to new expression. */ | |
680 | expr = lttng_event_expr_array_field_element_create( | |
681 | array_field_expr, (unsigned int) index); | |
682 | if (!expr) { | |
683 | /* `array_field_expr` not moved: destroy it. */ | |
684 | lttng_event_expr_destroy(array_field_expr); | |
685 | } | |
686 | ||
687 | break; | |
688 | } | |
689 | default: | |
52894180 JG |
690 | ERR("Invalid event expression type encoutered while deserializing event expression: type = %" PRIu64, |
691 | type); | |
692 | goto error; | |
38114013 PP |
693 | } |
694 | ||
695 | goto end; | |
696 | ||
697 | error: | |
698 | lttng_event_expr_destroy(expr); | |
699 | expr = NULL; | |
700 | ||
701 | end: | |
702 | return expr; | |
703 | } | |
704 | ||
683d081a | 705 | LTTNG_HIDDEN |
8dbb86b8 | 706 | ssize_t lttng_condition_event_rule_matches_create_from_payload( |
683d081a JR |
707 | struct lttng_payload_view *view, |
708 | struct lttng_condition **_condition) | |
709 | { | |
38114013 PP |
710 | ssize_t consumed_length; |
711 | size_t offset = 0; | |
712 | ssize_t event_rule_length; | |
713 | uint32_t i, capture_descr_count; | |
683d081a JR |
714 | struct lttng_condition *condition = NULL; |
715 | struct lttng_event_rule *event_rule = NULL; | |
683d081a JR |
716 | |
717 | if (!view || !_condition) { | |
718 | goto error; | |
719 | } | |
720 | ||
38114013 | 721 | /* Struct lttng_event_rule. */ |
683d081a JR |
722 | { |
723 | struct lttng_payload_view event_rule_view = | |
724 | lttng_payload_view_from_view(view, offset, -1); | |
725 | ||
726 | event_rule_length = lttng_event_rule_create_from_payload( | |
727 | &event_rule_view, &event_rule); | |
728 | } | |
729 | ||
730 | if (event_rule_length < 0 || !event_rule) { | |
731 | goto error; | |
732 | } | |
733 | ||
35a9ac41 FD |
734 | offset += event_rule_length; |
735 | ||
d602bd6a | 736 | /* Create condition (no capture descriptors yet) at this point */ |
8dbb86b8 | 737 | condition = lttng_condition_event_rule_matches_create(event_rule); |
38114013 | 738 | if (!condition) { |
683d081a JR |
739 | goto error; |
740 | } | |
741 | ||
38114013 | 742 | /* Capture descriptor count. */ |
a0377dfe | 743 | LTTNG_ASSERT(event_rule_length >= 0); |
38114013 PP |
744 | capture_descr_count = uint_from_buffer(&view->buffer, sizeof(uint32_t), &offset); |
745 | if (capture_descr_count == UINT32_C(-1)) { | |
683d081a JR |
746 | goto error; |
747 | } | |
748 | ||
38114013 PP |
749 | /* Capture descriptors. */ |
750 | for (i = 0; i < capture_descr_count; i++) { | |
6fb7c690 | 751 | enum lttng_condition_status status; |
38114013 PP |
752 | struct lttng_event_expr *expr = event_expr_from_payload( |
753 | view, &offset); | |
38114013 PP |
754 | |
755 | if (!expr) { | |
756 | goto error; | |
757 | } | |
758 | ||
759 | /* Move ownership of `expr` to `condition`. */ | |
8dbb86b8 | 760 | status = lttng_condition_event_rule_matches_append_capture_descriptor( |
38114013 PP |
761 | condition, expr); |
762 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
763 | /* `expr` not moved: destroy it. */ | |
764 | lttng_event_expr_destroy(expr); | |
765 | goto error; | |
766 | } | |
767 | } | |
768 | ||
769 | consumed_length = (ssize_t) offset; | |
683d081a JR |
770 | *_condition = condition; |
771 | condition = NULL; | |
772 | goto end; | |
773 | ||
774 | error: | |
38114013 | 775 | consumed_length = -1; |
683d081a JR |
776 | |
777 | end: | |
778 | lttng_event_rule_put(event_rule); | |
779 | lttng_condition_put(condition); | |
38114013 | 780 | return consumed_length; |
683d081a JR |
781 | } |
782 | ||
783 | LTTNG_HIDDEN | |
8dbb86b8 JR |
784 | enum lttng_condition_status |
785 | lttng_condition_event_rule_matches_borrow_rule_mutable( | |
683d081a JR |
786 | const struct lttng_condition *condition, |
787 | struct lttng_event_rule **rule) | |
788 | { | |
8dbb86b8 | 789 | struct lttng_condition_event_rule_matches *event_rule; |
683d081a JR |
790 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; |
791 | ||
8dbb86b8 JR |
792 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition) || |
793 | !rule) { | |
683d081a JR |
794 | status = LTTNG_CONDITION_STATUS_INVALID; |
795 | goto end; | |
796 | } | |
797 | ||
8dbb86b8 JR |
798 | event_rule = container_of(condition, |
799 | struct lttng_condition_event_rule_matches, parent); | |
683d081a JR |
800 | if (!event_rule->rule) { |
801 | status = LTTNG_CONDITION_STATUS_UNSET; | |
802 | goto end; | |
803 | } | |
804 | ||
805 | *rule = event_rule->rule; | |
806 | end: | |
807 | return status; | |
808 | } | |
809 | ||
8dbb86b8 | 810 | enum lttng_condition_status lttng_condition_event_rule_matches_get_rule( |
683d081a JR |
811 | const struct lttng_condition *condition, |
812 | const struct lttng_event_rule **rule) | |
813 | { | |
814 | struct lttng_event_rule *mutable_rule = NULL; | |
815 | const enum lttng_condition_status status = | |
8dbb86b8 JR |
816 | lttng_condition_event_rule_matches_borrow_rule_mutable( |
817 | condition, &mutable_rule); | |
683d081a JR |
818 | |
819 | *rule = mutable_rule; | |
820 | return status; | |
821 | } | |
822 | ||
35a9ac41 | 823 | LTTNG_HIDDEN |
8dbb86b8 | 824 | void lttng_condition_event_rule_matches_set_error_counter_index( |
35a9ac41 FD |
825 | struct lttng_condition *condition, uint64_t error_counter_index) |
826 | { | |
8dbb86b8 | 827 | struct lttng_condition_event_rule_matches *event_rule_matches_cond = |
35a9ac41 | 828 | container_of(condition, |
8dbb86b8 JR |
829 | struct lttng_condition_event_rule_matches, |
830 | parent); | |
35a9ac41 | 831 | |
8dbb86b8 JR |
832 | LTTNG_OPTIONAL_SET(&event_rule_matches_cond->error_counter_index, |
833 | error_counter_index); | |
35a9ac41 FD |
834 | } |
835 | ||
836 | LTTNG_HIDDEN | |
8dbb86b8 | 837 | uint64_t lttng_condition_event_rule_matches_get_error_counter_index( |
35a9ac41 FD |
838 | const struct lttng_condition *condition) |
839 | { | |
8dbb86b8 JR |
840 | const struct lttng_condition_event_rule_matches |
841 | *event_rule_matches_cond = container_of(condition, | |
842 | const struct lttng_condition_event_rule_matches, | |
843 | parent); | |
35a9ac41 | 844 | |
8dbb86b8 | 845 | return LTTNG_OPTIONAL_GET(event_rule_matches_cond->error_counter_index); |
35a9ac41 FD |
846 | } |
847 | ||
38114013 | 848 | enum lttng_condition_status |
8dbb86b8 | 849 | lttng_condition_event_rule_matches_append_capture_descriptor( |
38114013 PP |
850 | struct lttng_condition *condition, |
851 | struct lttng_event_expr *expr) | |
852 | { | |
853 | int ret; | |
854 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
8dbb86b8 | 855 | struct lttng_condition_event_rule_matches *event_rule_matches_cond = |
38114013 | 856 | container_of(condition, |
8dbb86b8 JR |
857 | struct lttng_condition_event_rule_matches, |
858 | parent); | |
0912b5ea | 859 | struct lttng_capture_descriptor *descriptor = NULL; |
81d566c9 | 860 | const struct lttng_event_rule *rule = NULL; |
38114013 PP |
861 | |
862 | /* Only accept l-values. */ | |
8dbb86b8 JR |
863 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition) || |
864 | !expr || !lttng_event_expr_is_lvalue(expr)) { | |
38114013 | 865 | status = LTTNG_CONDITION_STATUS_INVALID; |
81d566c9 JR |
866 | goto end; |
867 | } | |
868 | ||
8dbb86b8 | 869 | status = lttng_condition_event_rule_matches_get_rule(condition, &rule); |
81d566c9 JR |
870 | if (status != LTTNG_CONDITION_STATUS_OK) { |
871 | goto end; | |
872 | } | |
873 | ||
874 | switch(lttng_event_rule_get_type(rule)) { | |
695f7044 JR |
875 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: |
876 | case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT: | |
877 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
878 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
879 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
4f7da553 | 880 | case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL: |
81d566c9 JR |
881 | /* Supported. */ |
882 | status = LTTNG_CONDITION_STATUS_OK; | |
883 | break; | |
884 | case LTTNG_EVENT_RULE_TYPE_UNKNOWN: | |
885 | status = LTTNG_CONDITION_STATUS_INVALID; | |
886 | break; | |
887 | default: | |
888 | status = LTTNG_CONDITION_STATUS_UNSUPPORTED; | |
889 | break; | |
890 | } | |
891 | ||
892 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
38114013 PP |
893 | goto end; |
894 | } | |
895 | ||
0912b5ea JR |
896 | descriptor = malloc(sizeof(*descriptor)); |
897 | if (descriptor == NULL) { | |
898 | status = LTTNG_CONDITION_STATUS_ERROR; | |
899 | goto end; | |
900 | } | |
901 | ||
902 | descriptor->event_expression = expr; | |
903 | descriptor->bytecode = NULL; | |
904 | ||
38114013 | 905 | ret = lttng_dynamic_pointer_array_add_pointer( |
8dbb86b8 JR |
906 | &event_rule_matches_cond->capture_descriptors, |
907 | descriptor); | |
38114013 PP |
908 | if (ret) { |
909 | status = LTTNG_CONDITION_STATUS_ERROR; | |
910 | goto end; | |
911 | } | |
912 | ||
0912b5ea JR |
913 | /* Ownership is transfered to the internal capture_descriptors array */ |
914 | descriptor = NULL; | |
38114013 | 915 | end: |
0912b5ea | 916 | free(descriptor); |
38114013 PP |
917 | return status; |
918 | } | |
919 | ||
920 | enum lttng_condition_status | |
8dbb86b8 | 921 | lttng_condition_event_rule_matches_get_capture_descriptor_count( |
38114013 PP |
922 | const struct lttng_condition *condition, unsigned int *count) |
923 | { | |
924 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
8dbb86b8 JR |
925 | const struct lttng_condition_event_rule_matches |
926 | *event_rule_matches_condition = container_of(condition, | |
927 | const struct lttng_condition_event_rule_matches, | |
928 | parent); | |
38114013 | 929 | |
8dbb86b8 JR |
930 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition) || |
931 | !count) { | |
38114013 PP |
932 | status = LTTNG_CONDITION_STATUS_INVALID; |
933 | goto end; | |
934 | } | |
935 | ||
936 | *count = lttng_dynamic_pointer_array_get_count( | |
8dbb86b8 | 937 | &event_rule_matches_condition->capture_descriptors); |
38114013 PP |
938 | |
939 | end: | |
940 | return status; | |
941 | } | |
942 | ||
943 | const struct lttng_event_expr * | |
8dbb86b8 | 944 | lttng_condition_event_rule_matches_get_capture_descriptor_at_index( |
38114013 PP |
945 | const struct lttng_condition *condition, unsigned int index) |
946 | { | |
38114013 | 947 | const struct lttng_event_expr *expr = NULL; |
6fb7c690 | 948 | const struct lttng_capture_descriptor *desc = NULL; |
0912b5ea | 949 | |
8dbb86b8 | 950 | desc = lttng_condition_event_rule_matches_get_internal_capture_descriptor_at_index( |
6fb7c690 JR |
951 | condition, index); |
952 | if (desc == NULL) { | |
38114013 PP |
953 | goto end; |
954 | } | |
0912b5ea | 955 | expr = desc->event_expression; |
38114013 PP |
956 | |
957 | end: | |
958 | return expr; | |
959 | } | |
960 | ||
683d081a | 961 | LTTNG_HIDDEN |
8dbb86b8 JR |
962 | ssize_t lttng_evaluation_event_rule_matches_create_from_payload( |
963 | const struct lttng_condition_event_rule_matches *condition, | |
683d081a JR |
964 | struct lttng_payload_view *view, |
965 | struct lttng_evaluation **_evaluation) | |
966 | { | |
967 | ssize_t ret, offset = 0; | |
683d081a | 968 | struct lttng_evaluation *evaluation = NULL; |
7c920b63 PP |
969 | uint32_t capture_payload_size; |
970 | const char *capture_payload = NULL; | |
683d081a JR |
971 | |
972 | if (!_evaluation) { | |
973 | ret = -1; | |
974 | goto error; | |
975 | } | |
976 | ||
7c920b63 PP |
977 | { |
978 | const struct lttng_payload_view current_view = | |
979 | lttng_payload_view_from_view(view, offset, -1); | |
980 | ||
981 | if (current_view.buffer.size < sizeof(capture_payload_size)) { | |
982 | ret = -1; | |
983 | goto error; | |
984 | } | |
683d081a | 985 | |
7c920b63 PP |
986 | memcpy(&capture_payload_size, current_view.buffer.data, |
987 | sizeof(capture_payload_size)); | |
988 | } | |
989 | offset += sizeof(capture_payload_size); | |
990 | ||
991 | if (capture_payload_size > 0) { | |
992 | const struct lttng_payload_view current_view = | |
993 | lttng_payload_view_from_view(view, offset, -1); | |
994 | ||
995 | if (current_view.buffer.size < capture_payload_size) { | |
996 | ret = -1; | |
997 | goto error; | |
998 | } | |
999 | ||
1000 | capture_payload = current_view.buffer.data; | |
1001 | } | |
1002 | ||
8dbb86b8 JR |
1003 | evaluation = lttng_evaluation_event_rule_matches_create( |
1004 | condition, capture_payload, capture_payload_size, true); | |
683d081a JR |
1005 | if (!evaluation) { |
1006 | ret = -1; | |
1007 | goto error; | |
1008 | } | |
1009 | ||
7c920b63 | 1010 | offset += capture_payload_size; |
683d081a JR |
1011 | *_evaluation = evaluation; |
1012 | evaluation = NULL; | |
1013 | ret = offset; | |
1014 | ||
1015 | error: | |
1016 | lttng_evaluation_destroy(evaluation); | |
1017 | return ret; | |
1018 | } | |
1019 | ||
8dbb86b8 | 1020 | static int lttng_evaluation_event_rule_matches_serialize( |
683d081a JR |
1021 | const struct lttng_evaluation *evaluation, |
1022 | struct lttng_payload *payload) | |
1023 | { | |
1024 | int ret = 0; | |
8dbb86b8 | 1025 | struct lttng_evaluation_event_rule_matches *hit; |
7c920b63 | 1026 | uint32_t capture_payload_size; |
683d081a | 1027 | |
8dbb86b8 JR |
1028 | hit = container_of(evaluation, |
1029 | struct lttng_evaluation_event_rule_matches, parent); | |
683d081a | 1030 | |
7c920b63 PP |
1031 | capture_payload_size = (uint32_t) hit->capture_payload.size; |
1032 | ret = lttng_dynamic_buffer_append(&payload->buffer, &capture_payload_size, | |
1033 | sizeof(capture_payload_size)); | |
1034 | if (ret) { | |
1035 | goto end; | |
1036 | } | |
1037 | ||
1038 | ret = lttng_dynamic_buffer_append(&payload->buffer, hit->capture_payload.data, | |
1039 | hit->capture_payload.size); | |
1040 | if (ret) { | |
1041 | goto end; | |
1042 | } | |
1043 | ||
1044 | end: | |
1045 | return ret; | |
1046 | } | |
1047 | ||
1048 | static | |
1049 | bool msgpack_str_is_equal(const struct msgpack_object *obj, const char *str) | |
1050 | { | |
1051 | bool is_equal = true; | |
1052 | ||
a0377dfe | 1053 | LTTNG_ASSERT(obj->type == MSGPACK_OBJECT_STR); |
7c920b63 PP |
1054 | |
1055 | if (obj->via.str.size != strlen(str)) { | |
1056 | is_equal = false; | |
1057 | goto end; | |
1058 | } | |
1059 | ||
1060 | if (strncmp(obj->via.str.ptr, str, obj->via.str.size) != 0) { | |
1061 | is_equal = false; | |
1062 | goto end; | |
1063 | } | |
1064 | ||
1065 | end: | |
1066 | return is_equal; | |
1067 | } | |
1068 | ||
1069 | static | |
1070 | const msgpack_object *get_msgpack_map_obj(const struct msgpack_object *map_obj, | |
1071 | const char *name) | |
1072 | { | |
1073 | const msgpack_object *ret = NULL; | |
1074 | size_t i; | |
1075 | ||
a0377dfe | 1076 | LTTNG_ASSERT(map_obj->type == MSGPACK_OBJECT_MAP); |
7c920b63 PP |
1077 | |
1078 | for (i = 0; i < map_obj->via.map.size; i++) { | |
1079 | const struct msgpack_object_kv *kv = &map_obj->via.map.ptr[i]; | |
1080 | ||
a0377dfe | 1081 | LTTNG_ASSERT(kv->key.type == MSGPACK_OBJECT_STR); |
7c920b63 PP |
1082 | |
1083 | if (msgpack_str_is_equal(&kv->key, name)) { | |
1084 | ret = &kv->val; | |
1085 | goto end; | |
1086 | } | |
1087 | } | |
1088 | ||
683d081a JR |
1089 | end: |
1090 | return ret; | |
1091 | } | |
1092 | ||
8dbb86b8 | 1093 | static void lttng_evaluation_event_rule_matches_destroy( |
683d081a JR |
1094 | struct lttng_evaluation *evaluation) |
1095 | { | |
8dbb86b8 | 1096 | struct lttng_evaluation_event_rule_matches *hit; |
683d081a | 1097 | |
8dbb86b8 JR |
1098 | hit = container_of(evaluation, |
1099 | struct lttng_evaluation_event_rule_matches, parent); | |
7c920b63 PP |
1100 | lttng_dynamic_buffer_reset(&hit->capture_payload); |
1101 | lttng_event_field_value_destroy(hit->captured_values); | |
683d081a JR |
1102 | free(hit); |
1103 | } | |
1104 | ||
7c920b63 PP |
1105 | static |
1106 | int event_field_value_from_obj(const msgpack_object *obj, | |
1107 | struct lttng_event_field_value **field_val) | |
1108 | { | |
1109 | int ret = 0; | |
1110 | ||
a0377dfe FD |
1111 | LTTNG_ASSERT(obj); |
1112 | LTTNG_ASSERT(field_val); | |
7c920b63 PP |
1113 | |
1114 | switch (obj->type) { | |
1115 | case MSGPACK_OBJECT_NIL: | |
1116 | /* Unavailable. */ | |
1117 | *field_val = NULL; | |
1118 | goto end; | |
1119 | case MSGPACK_OBJECT_POSITIVE_INTEGER: | |
1120 | *field_val = lttng_event_field_value_uint_create( | |
1121 | obj->via.u64); | |
1122 | break; | |
1123 | case MSGPACK_OBJECT_NEGATIVE_INTEGER: | |
1124 | *field_val = lttng_event_field_value_int_create( | |
1125 | obj->via.i64); | |
1126 | break; | |
1127 | case MSGPACK_OBJECT_FLOAT32: | |
1128 | case MSGPACK_OBJECT_FLOAT64: | |
1129 | *field_val = lttng_event_field_value_real_create( | |
1130 | obj->via.f64); | |
1131 | break; | |
1132 | case MSGPACK_OBJECT_STR: | |
1133 | *field_val = lttng_event_field_value_string_create_with_size( | |
1134 | obj->via.str.ptr, obj->via.str.size); | |
1135 | break; | |
1136 | case MSGPACK_OBJECT_ARRAY: | |
1137 | { | |
1138 | size_t i; | |
1139 | ||
1140 | *field_val = lttng_event_field_value_array_create(); | |
1141 | if (!*field_val) { | |
1142 | goto error; | |
1143 | } | |
1144 | ||
1145 | for (i = 0; i < obj->via.array.size; i++) { | |
1146 | const msgpack_object *elem_obj = &obj->via.array.ptr[i]; | |
1147 | struct lttng_event_field_value *elem_field_val; | |
1148 | ||
1149 | ret = event_field_value_from_obj(elem_obj, | |
1150 | &elem_field_val); | |
1151 | if (ret) { | |
1152 | goto error; | |
1153 | } | |
1154 | ||
1155 | if (elem_field_val) { | |
1156 | ret = lttng_event_field_value_array_append( | |
1157 | *field_val, elem_field_val); | |
1158 | } else { | |
1159 | ret = lttng_event_field_value_array_append_unavailable( | |
1160 | *field_val); | |
1161 | } | |
1162 | ||
1163 | if (ret) { | |
1164 | lttng_event_field_value_destroy(elem_field_val); | |
1165 | goto error; | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | break; | |
1170 | } | |
1171 | case MSGPACK_OBJECT_MAP: | |
1172 | { | |
1173 | /* | |
1174 | * As of this version, the only valid map object is | |
1175 | * for an enumeration value, for example: | |
1176 | * | |
1177 | * type: enum | |
1178 | * value: 177 | |
1179 | * labels: | |
1180 | * - Labatt 50 | |
1181 | * - Molson Dry | |
1182 | * - Carling Black Label | |
1183 | */ | |
1184 | const msgpack_object *inner_obj; | |
1185 | size_t label_i; | |
1186 | ||
1187 | inner_obj = get_msgpack_map_obj(obj, "type"); | |
1188 | if (!inner_obj) { | |
1189 | ERR("Missing `type` entry in map object"); | |
1190 | goto error; | |
1191 | } | |
1192 | ||
1193 | if (inner_obj->type != MSGPACK_OBJECT_STR) { | |
1194 | ERR("Map object's `type` entry is not a string: type = %s", | |
1195 | msgpack_object_type_str(inner_obj->type)); | |
1196 | goto error; | |
1197 | } | |
1198 | ||
1199 | if (!msgpack_str_is_equal(inner_obj, "enum")) { | |
1200 | ERR("Map object's `type` entry: expecting `enum`"); | |
1201 | goto error; | |
1202 | } | |
1203 | ||
1204 | inner_obj = get_msgpack_map_obj(obj, "value"); | |
1205 | if (!inner_obj) { | |
1206 | ERR("Missing `value` entry in map object"); | |
1207 | goto error; | |
1208 | } | |
1209 | ||
1210 | if (inner_obj->type == MSGPACK_OBJECT_POSITIVE_INTEGER) { | |
1211 | *field_val = lttng_event_field_value_enum_uint_create( | |
1212 | inner_obj->via.u64); | |
1213 | } else if (inner_obj->type == MSGPACK_OBJECT_NEGATIVE_INTEGER) { | |
1214 | *field_val = lttng_event_field_value_enum_int_create( | |
1215 | inner_obj->via.i64); | |
1216 | } else { | |
1217 | ERR("Map object's `value` entry is not an integer: type = %s", | |
1218 | msgpack_object_type_str(inner_obj->type)); | |
1219 | goto error; | |
1220 | } | |
1221 | ||
1222 | if (!*field_val) { | |
1223 | goto error; | |
1224 | } | |
1225 | ||
1226 | inner_obj = get_msgpack_map_obj(obj, "labels"); | |
1227 | if (!inner_obj) { | |
1228 | /* No labels */ | |
1229 | goto end; | |
1230 | } | |
1231 | ||
1232 | if (inner_obj->type != MSGPACK_OBJECT_ARRAY) { | |
1233 | ERR("Map object's `labels` entry is not an array: type = %s", | |
1234 | msgpack_object_type_str(inner_obj->type)); | |
1235 | goto error; | |
1236 | } | |
1237 | ||
1238 | for (label_i = 0; label_i < inner_obj->via.array.size; | |
1239 | label_i++) { | |
1240 | int iret; | |
1241 | const msgpack_object *elem_obj = | |
1242 | &inner_obj->via.array.ptr[label_i]; | |
1243 | ||
1244 | if (elem_obj->type != MSGPACK_OBJECT_STR) { | |
1245 | ERR("Map object's `labels` entry's type is not a string: type = %s", | |
1246 | msgpack_object_type_str(elem_obj->type)); | |
1247 | goto error; | |
1248 | } | |
1249 | ||
1250 | iret = lttng_event_field_value_enum_append_label_with_size( | |
1251 | *field_val, elem_obj->via.str.ptr, | |
1252 | elem_obj->via.str.size); | |
1253 | if (iret) { | |
1254 | goto error; | |
1255 | } | |
1256 | } | |
1257 | ||
1258 | break; | |
1259 | } | |
1260 | default: | |
1261 | ERR("Unexpected object type: type = %s", | |
1262 | msgpack_object_type_str(obj->type)); | |
1263 | goto error; | |
1264 | } | |
1265 | ||
1266 | if (!*field_val) { | |
1267 | goto error; | |
1268 | } | |
1269 | ||
1270 | goto end; | |
1271 | ||
1272 | error: | |
1273 | lttng_event_field_value_destroy(*field_val); | |
1274 | *field_val = NULL; | |
1275 | ret = -1; | |
1276 | ||
1277 | end: | |
1278 | return ret; | |
1279 | } | |
1280 | ||
8dbb86b8 JR |
1281 | static struct lttng_event_field_value *event_field_value_from_capture_payload( |
1282 | const struct lttng_condition_event_rule_matches *condition, | |
1283 | const char *capture_payload, | |
1284 | size_t capture_payload_size) | |
7c920b63 PP |
1285 | { |
1286 | struct lttng_event_field_value *ret = NULL; | |
1287 | msgpack_unpacked unpacked; | |
1288 | msgpack_unpack_return unpack_return; | |
1289 | const msgpack_object *root_obj; | |
1290 | const msgpack_object_array *root_array_obj; | |
1291 | size_t i; | |
1292 | size_t count; | |
1293 | ||
a0377dfe FD |
1294 | LTTNG_ASSERT(condition); |
1295 | LTTNG_ASSERT(capture_payload); | |
7c920b63 PP |
1296 | |
1297 | /* Initialize value. */ | |
1298 | msgpack_unpacked_init(&unpacked); | |
1299 | ||
1300 | /* Decode. */ | |
1301 | unpack_return = msgpack_unpack_next(&unpacked, capture_payload, | |
1302 | capture_payload_size, NULL); | |
1303 | if (unpack_return != MSGPACK_UNPACK_SUCCESS) { | |
1304 | ERR("msgpack_unpack_next() failed to decode the " | |
1305 | "MessagePack-encoded capture payload: " | |
1306 | "size = %zu, ret = %d", | |
1307 | capture_payload_size, unpack_return); | |
1308 | goto error; | |
1309 | } | |
1310 | ||
1311 | /* Get root array. */ | |
1312 | root_obj = &unpacked.data; | |
1313 | ||
1314 | if (root_obj->type != MSGPACK_OBJECT_ARRAY) { | |
1315 | ERR("Expecting an array as the root object: type = %s", | |
1316 | msgpack_object_type_str(root_obj->type)); | |
1317 | goto error; | |
1318 | } | |
1319 | ||
1320 | root_array_obj = &root_obj->via.array; | |
1321 | ||
1322 | /* Create an empty root array event field value. */ | |
1323 | ret = lttng_event_field_value_array_create(); | |
1324 | if (!ret) { | |
1325 | goto error; | |
1326 | } | |
1327 | ||
1328 | /* | |
1329 | * For each capture descriptor in the condition object: | |
1330 | * | |
1331 | * 1. Get its corresponding captured field value MessagePack | |
1332 | * object. | |
1333 | * | |
1334 | * 2. Create a corresponding event field value. | |
1335 | * | |
1336 | * 3. Append it to `ret` (the root array event field value). | |
1337 | */ | |
1338 | count = lttng_dynamic_pointer_array_get_count( | |
1339 | &condition->capture_descriptors); | |
a0377dfe | 1340 | LTTNG_ASSERT(count > 0); |
7c920b63 PP |
1341 | |
1342 | for (i = 0; i < count; i++) { | |
1343 | const struct lttng_capture_descriptor *capture_descriptor = | |
8dbb86b8 | 1344 | lttng_condition_event_rule_matches_get_internal_capture_descriptor_at_index( |
7c920b63 PP |
1345 | &condition->parent, i); |
1346 | const msgpack_object *elem_obj; | |
1347 | struct lttng_event_field_value *elem_field_val; | |
1348 | int iret; | |
1349 | ||
a0377dfe | 1350 | LTTNG_ASSERT(capture_descriptor); |
7c920b63 PP |
1351 | |
1352 | elem_obj = &root_array_obj->ptr[i]; | |
1353 | iret = event_field_value_from_obj(elem_obj, | |
1354 | &elem_field_val); | |
1355 | if (iret) { | |
1356 | goto error; | |
1357 | } | |
1358 | ||
1359 | if (elem_field_val) { | |
1360 | iret = lttng_event_field_value_array_append(ret, | |
1361 | elem_field_val); | |
1362 | } else { | |
1363 | iret = lttng_event_field_value_array_append_unavailable( | |
1364 | ret); | |
1365 | } | |
1366 | ||
1367 | if (iret) { | |
1368 | lttng_event_field_value_destroy(elem_field_val); | |
1369 | goto error; | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | goto end; | |
1374 | ||
1375 | error: | |
1376 | lttng_event_field_value_destroy(ret); | |
1377 | ret = NULL; | |
1378 | ||
1379 | end: | |
1380 | msgpack_unpacked_destroy(&unpacked); | |
1381 | return ret; | |
1382 | } | |
1383 | ||
683d081a | 1384 | LTTNG_HIDDEN |
8dbb86b8 JR |
1385 | struct lttng_evaluation *lttng_evaluation_event_rule_matches_create( |
1386 | const struct lttng_condition_event_rule_matches *condition, | |
1387 | const char *capture_payload, | |
1388 | size_t capture_payload_size, | |
7c920b63 | 1389 | bool decode_capture_payload) |
683d081a | 1390 | { |
8dbb86b8 | 1391 | struct lttng_evaluation_event_rule_matches *hit; |
683d081a JR |
1392 | struct lttng_evaluation *evaluation = NULL; |
1393 | ||
8dbb86b8 | 1394 | hit = zmalloc(sizeof(struct lttng_evaluation_event_rule_matches)); |
683d081a | 1395 | if (!hit) { |
7c920b63 | 1396 | goto error; |
683d081a JR |
1397 | } |
1398 | ||
7c920b63 PP |
1399 | lttng_dynamic_buffer_init(&hit->capture_payload); |
1400 | ||
1401 | if (capture_payload) { | |
1402 | const int ret = lttng_dynamic_buffer_append( | |
1403 | &hit->capture_payload, capture_payload, | |
1404 | capture_payload_size); | |
1405 | if (ret) { | |
1406 | ERR("Failed to initialize capture payload of event rule evaluation"); | |
1407 | goto error; | |
1408 | } | |
1409 | ||
1410 | if (decode_capture_payload) { | |
1411 | hit->captured_values = | |
1412 | event_field_value_from_capture_payload( | |
1413 | condition, | |
1414 | capture_payload, | |
1415 | capture_payload_size); | |
1416 | if (!hit->captured_values) { | |
1417 | ERR("Failed to decode the capture payload: size = %zu", | |
1418 | capture_payload_size); | |
1419 | goto error; | |
1420 | } | |
1421 | } | |
683d081a JR |
1422 | } |
1423 | ||
8dbb86b8 JR |
1424 | hit->parent.type = LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES; |
1425 | hit->parent.serialize = lttng_evaluation_event_rule_matches_serialize; | |
1426 | hit->parent.destroy = lttng_evaluation_event_rule_matches_destroy; | |
683d081a JR |
1427 | |
1428 | evaluation = &hit->parent; | |
1429 | hit = NULL; | |
1430 | ||
7c920b63 | 1431 | error: |
683d081a | 1432 | if (hit) { |
8dbb86b8 | 1433 | lttng_evaluation_event_rule_matches_destroy(&hit->parent); |
683d081a JR |
1434 | } |
1435 | ||
1436 | return evaluation; | |
1437 | } | |
1438 | ||
8dbb86b8 JR |
1439 | enum lttng_evaluation_event_rule_matches_status |
1440 | lttng_evaluation_event_rule_matches_get_captured_values( | |
7c920b63 PP |
1441 | const struct lttng_evaluation *evaluation, |
1442 | const struct lttng_event_field_value **field_val) | |
1443 | { | |
8dbb86b8 JR |
1444 | struct lttng_evaluation_event_rule_matches *hit; |
1445 | enum lttng_evaluation_event_rule_matches_status status = | |
1446 | LTTNG_EVALUATION_EVENT_RULE_MATCHES_STATUS_OK; | |
7c920b63 | 1447 | |
8dbb86b8 | 1448 | if (!evaluation || !is_event_rule_matches_evaluation(evaluation) || |
7c920b63 | 1449 | !field_val) { |
8dbb86b8 | 1450 | status = LTTNG_EVALUATION_EVENT_RULE_MATCHES_STATUS_INVALID; |
7c920b63 PP |
1451 | goto end; |
1452 | } | |
1453 | ||
8dbb86b8 JR |
1454 | hit = container_of(evaluation, |
1455 | struct lttng_evaluation_event_rule_matches, parent); | |
7c920b63 | 1456 | if (!hit->captured_values) { |
8dbb86b8 | 1457 | status = LTTNG_EVALUATION_EVENT_RULE_MATCHES_STATUS_NONE; |
7c920b63 PP |
1458 | goto end; |
1459 | } | |
1460 | ||
1461 | *field_val = hit->captured_values; | |
1462 | ||
1463 | end: | |
1464 | return status; | |
683d081a | 1465 | } |
834966af JR |
1466 | |
1467 | LTTNG_HIDDEN | |
1468 | enum lttng_error_code | |
8dbb86b8 | 1469 | lttng_condition_event_rule_matches_generate_capture_descriptor_bytecode( |
834966af JR |
1470 | struct lttng_condition *condition) |
1471 | { | |
1472 | enum lttng_error_code ret; | |
1473 | enum lttng_condition_status status; | |
1474 | unsigned int capture_count, i; | |
1475 | ||
8dbb86b8 | 1476 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition)) { |
834966af JR |
1477 | ret = LTTNG_ERR_FATAL; |
1478 | goto end; | |
1479 | } | |
1480 | ||
8dbb86b8 | 1481 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( |
834966af JR |
1482 | condition, &capture_count); |
1483 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
1484 | ret = LTTNG_ERR_FATAL; | |
1485 | goto end; | |
1486 | } | |
1487 | ||
1488 | for (i = 0; i < capture_count; i++) { | |
1489 | struct lttng_capture_descriptor *local_capture_desc = | |
8dbb86b8 | 1490 | lttng_condition_event_rule_matches_get_internal_capture_descriptor_at_index( |
834966af JR |
1491 | condition, i); |
1492 | ||
1493 | if (local_capture_desc == NULL) { | |
1494 | ret = LTTNG_ERR_FATAL; | |
1495 | goto end; | |
1496 | } | |
1497 | ||
1498 | /* Generate the bytecode. */ | |
1499 | status = lttng_event_expr_to_bytecode( | |
1500 | local_capture_desc->event_expression, | |
1501 | &local_capture_desc->bytecode); | |
1502 | if (status < 0 || local_capture_desc->bytecode == NULL) { | |
1503 | ret = LTTNG_ERR_INVALID_CAPTURE_EXPRESSION; | |
1504 | goto end; | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | /* Everything went better than expected */ | |
1509 | ret = LTTNG_OK; | |
1510 | ||
1511 | end: | |
1512 | return ret; | |
1513 | } | |
51dbe985 JR |
1514 | |
1515 | LTTNG_HIDDEN | |
1516 | const struct lttng_bytecode * | |
8dbb86b8 | 1517 | lttng_condition_event_rule_matches_get_capture_bytecode_at_index( |
51dbe985 JR |
1518 | const struct lttng_condition *condition, unsigned int index) |
1519 | { | |
8dbb86b8 JR |
1520 | const struct lttng_condition_event_rule_matches |
1521 | *event_rule_matches_cond = container_of(condition, | |
1522 | const struct lttng_condition_event_rule_matches, | |
1523 | parent); | |
51dbe985 JR |
1524 | struct lttng_capture_descriptor *desc = NULL; |
1525 | struct lttng_bytecode *bytecode = NULL; | |
1526 | unsigned int count; | |
1527 | enum lttng_condition_status status; | |
1528 | ||
8dbb86b8 | 1529 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition)) { |
51dbe985 JR |
1530 | goto end; |
1531 | } | |
1532 | ||
8dbb86b8 | 1533 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( |
51dbe985 JR |
1534 | condition, &count); |
1535 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
1536 | goto end; | |
1537 | } | |
1538 | ||
1539 | if (index >= count) { | |
1540 | goto end; | |
1541 | } | |
1542 | ||
1543 | desc = lttng_dynamic_pointer_array_get_pointer( | |
8dbb86b8 | 1544 | &event_rule_matches_cond->capture_descriptors, index); |
51dbe985 JR |
1545 | if (desc == NULL) { |
1546 | goto end; | |
1547 | } | |
1548 | ||
1549 | bytecode = desc->bytecode; | |
1550 | end: | |
1551 | return bytecode; | |
1552 | } |