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