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> | |
10 | #include <common/macros.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 | ||
8dbb86b8 | 436 | struct lttng_condition *lttng_condition_event_rule_matches_create( |
683d081a JR |
437 | struct lttng_event_rule *rule) |
438 | { | |
439 | struct lttng_condition *parent = NULL; | |
8dbb86b8 | 440 | struct lttng_condition_event_rule_matches *condition = NULL; |
683d081a JR |
441 | |
442 | if (!rule) { | |
443 | goto end; | |
444 | } | |
445 | ||
8dbb86b8 | 446 | condition = zmalloc(sizeof(struct lttng_condition_event_rule_matches)); |
683d081a JR |
447 | if (!condition) { |
448 | return NULL; | |
449 | } | |
450 | ||
451 | lttng_condition_init(&condition->parent, | |
8dbb86b8 JR |
452 | LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES); |
453 | condition->parent.validate = | |
454 | lttng_condition_event_rule_matches_validate, | |
455 | condition->parent.serialize = | |
456 | lttng_condition_event_rule_matches_serialize, | |
457 | condition->parent.equal = lttng_condition_event_rule_matches_is_equal, | |
458 | condition->parent.destroy = lttng_condition_event_rule_matches_destroy, | |
683d081a JR |
459 | |
460 | lttng_event_rule_get(rule); | |
461 | condition->rule = rule; | |
462 | rule = NULL; | |
463 | ||
38114013 | 464 | lttng_dynamic_pointer_array_init(&condition->capture_descriptors, |
0912b5ea | 465 | destroy_capture_descriptor); |
38114013 | 466 | |
683d081a JR |
467 | parent = &condition->parent; |
468 | end: | |
469 | return parent; | |
470 | } | |
471 | ||
38114013 PP |
472 | static |
473 | uint64_t uint_from_buffer(const struct lttng_buffer_view *view, size_t size, | |
474 | size_t *offset) | |
475 | { | |
476 | uint64_t ret; | |
477 | const struct lttng_buffer_view uint_view = | |
478 | lttng_buffer_view_from_view(view, *offset, size); | |
479 | ||
480 | if (!lttng_buffer_view_is_valid(&uint_view)) { | |
481 | ret = UINT64_C(-1); | |
482 | goto end; | |
483 | } | |
484 | ||
485 | switch (size) { | |
486 | case 1: | |
487 | ret = (uint64_t) *uint_view.data; | |
488 | break; | |
489 | case sizeof(uint32_t): | |
490 | { | |
491 | uint32_t u32; | |
492 | ||
493 | memcpy(&u32, uint_view.data, sizeof(u32)); | |
494 | ret = (uint64_t) u32; | |
495 | break; | |
496 | } | |
497 | case sizeof(ret): | |
498 | memcpy(&ret, uint_view.data, sizeof(ret)); | |
499 | break; | |
500 | default: | |
501 | abort(); | |
502 | } | |
503 | ||
504 | *offset += size; | |
505 | ||
506 | end: | |
507 | return ret; | |
508 | } | |
509 | ||
510 | static | |
511 | const char *str_from_buffer(const struct lttng_buffer_view *view, | |
512 | size_t *offset) | |
513 | { | |
514 | uint64_t len; | |
515 | const char *ret; | |
516 | ||
517 | len = uint_from_buffer(view, sizeof(uint32_t), offset); | |
518 | if (len == UINT64_C(-1)) { | |
519 | goto error; | |
520 | } | |
521 | ||
522 | ret = &view->data[*offset]; | |
523 | ||
524 | if (!lttng_buffer_view_contains_string(view, ret, len)) { | |
525 | goto error; | |
526 | } | |
527 | ||
528 | *offset += len; | |
529 | goto end; | |
530 | ||
531 | error: | |
532 | ret = NULL; | |
533 | ||
534 | end: | |
535 | return ret; | |
536 | } | |
537 | ||
538 | static | |
539 | struct lttng_event_expr *event_expr_from_payload( | |
540 | struct lttng_payload_view *view, size_t *offset) | |
541 | { | |
542 | struct lttng_event_expr *expr = NULL; | |
543 | const char *str; | |
544 | uint64_t type; | |
545 | ||
546 | type = uint_from_buffer(&view->buffer, sizeof(uint8_t), offset); | |
547 | if (type == UINT64_C(-1)) { | |
548 | goto error; | |
549 | } | |
550 | ||
551 | switch (type) { | |
552 | case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD: | |
553 | str = str_from_buffer(&view->buffer, offset); | |
554 | if (!str) { | |
555 | goto error; | |
556 | } | |
557 | ||
558 | expr = lttng_event_expr_event_payload_field_create(str); | |
559 | break; | |
560 | case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD: | |
561 | str = str_from_buffer(&view->buffer, offset); | |
562 | if (!str) { | |
563 | goto error; | |
564 | } | |
565 | ||
566 | expr = lttng_event_expr_channel_context_field_create(str); | |
567 | break; | |
568 | case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD: | |
569 | { | |
570 | const char *provider_name; | |
571 | const char *type_name; | |
572 | ||
573 | provider_name = str_from_buffer(&view->buffer, offset); | |
574 | if (!provider_name) { | |
575 | goto error; | |
576 | } | |
577 | ||
578 | type_name = str_from_buffer(&view->buffer, offset); | |
579 | if (!type_name) { | |
580 | goto error; | |
581 | } | |
582 | ||
583 | expr = lttng_event_expr_app_specific_context_field_create( | |
584 | provider_name, type_name); | |
585 | break; | |
586 | } | |
587 | case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT: | |
588 | { | |
589 | struct lttng_event_expr *array_field_expr; | |
590 | const uint64_t index = uint_from_buffer( | |
591 | &view->buffer, sizeof(uint32_t), offset); | |
592 | ||
593 | if (index == UINT64_C(-1)) { | |
594 | goto error; | |
595 | } | |
596 | ||
597 | /* Array field expression is the encoded after this. */ | |
598 | array_field_expr = event_expr_from_payload(view, offset); | |
599 | if (!array_field_expr) { | |
600 | goto error; | |
601 | } | |
602 | ||
603 | /* Move ownership of `array_field_expr` to new expression. */ | |
604 | expr = lttng_event_expr_array_field_element_create( | |
605 | array_field_expr, (unsigned int) index); | |
606 | if (!expr) { | |
607 | /* `array_field_expr` not moved: destroy it. */ | |
608 | lttng_event_expr_destroy(array_field_expr); | |
609 | } | |
610 | ||
611 | break; | |
612 | } | |
613 | default: | |
52894180 JG |
614 | ERR("Invalid event expression type encoutered while deserializing event expression: type = %" PRIu64, |
615 | type); | |
616 | goto error; | |
38114013 PP |
617 | } |
618 | ||
619 | goto end; | |
620 | ||
621 | error: | |
622 | lttng_event_expr_destroy(expr); | |
623 | expr = NULL; | |
624 | ||
625 | end: | |
626 | return expr; | |
627 | } | |
628 | ||
683d081a | 629 | LTTNG_HIDDEN |
8dbb86b8 | 630 | ssize_t lttng_condition_event_rule_matches_create_from_payload( |
683d081a JR |
631 | struct lttng_payload_view *view, |
632 | struct lttng_condition **_condition) | |
633 | { | |
38114013 PP |
634 | ssize_t consumed_length; |
635 | size_t offset = 0; | |
636 | ssize_t event_rule_length; | |
637 | uint32_t i, capture_descr_count; | |
683d081a JR |
638 | struct lttng_condition *condition = NULL; |
639 | struct lttng_event_rule *event_rule = NULL; | |
683d081a JR |
640 | |
641 | if (!view || !_condition) { | |
642 | goto error; | |
643 | } | |
644 | ||
38114013 | 645 | /* Struct lttng_event_rule. */ |
683d081a JR |
646 | { |
647 | struct lttng_payload_view event_rule_view = | |
648 | lttng_payload_view_from_view(view, offset, -1); | |
649 | ||
650 | event_rule_length = lttng_event_rule_create_from_payload( | |
651 | &event_rule_view, &event_rule); | |
652 | } | |
653 | ||
654 | if (event_rule_length < 0 || !event_rule) { | |
655 | goto error; | |
656 | } | |
657 | ||
35a9ac41 FD |
658 | offset += event_rule_length; |
659 | ||
d602bd6a | 660 | /* Create condition (no capture descriptors yet) at this point */ |
8dbb86b8 | 661 | condition = lttng_condition_event_rule_matches_create(event_rule); |
38114013 | 662 | if (!condition) { |
683d081a JR |
663 | goto error; |
664 | } | |
665 | ||
38114013 PP |
666 | /* Capture descriptor count. */ |
667 | assert(event_rule_length >= 0); | |
38114013 PP |
668 | capture_descr_count = uint_from_buffer(&view->buffer, sizeof(uint32_t), &offset); |
669 | if (capture_descr_count == UINT32_C(-1)) { | |
683d081a JR |
670 | goto error; |
671 | } | |
672 | ||
38114013 PP |
673 | /* Capture descriptors. */ |
674 | for (i = 0; i < capture_descr_count; i++) { | |
6fb7c690 | 675 | enum lttng_condition_status status; |
38114013 PP |
676 | struct lttng_event_expr *expr = event_expr_from_payload( |
677 | view, &offset); | |
38114013 PP |
678 | |
679 | if (!expr) { | |
680 | goto error; | |
681 | } | |
682 | ||
683 | /* Move ownership of `expr` to `condition`. */ | |
8dbb86b8 | 684 | status = lttng_condition_event_rule_matches_append_capture_descriptor( |
38114013 PP |
685 | condition, expr); |
686 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
687 | /* `expr` not moved: destroy it. */ | |
688 | lttng_event_expr_destroy(expr); | |
689 | goto error; | |
690 | } | |
691 | } | |
692 | ||
693 | consumed_length = (ssize_t) offset; | |
683d081a JR |
694 | *_condition = condition; |
695 | condition = NULL; | |
696 | goto end; | |
697 | ||
698 | error: | |
38114013 | 699 | consumed_length = -1; |
683d081a JR |
700 | |
701 | end: | |
702 | lttng_event_rule_put(event_rule); | |
703 | lttng_condition_put(condition); | |
38114013 | 704 | return consumed_length; |
683d081a JR |
705 | } |
706 | ||
707 | LTTNG_HIDDEN | |
8dbb86b8 JR |
708 | enum lttng_condition_status |
709 | lttng_condition_event_rule_matches_borrow_rule_mutable( | |
683d081a JR |
710 | const struct lttng_condition *condition, |
711 | struct lttng_event_rule **rule) | |
712 | { | |
8dbb86b8 | 713 | struct lttng_condition_event_rule_matches *event_rule; |
683d081a JR |
714 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; |
715 | ||
8dbb86b8 JR |
716 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition) || |
717 | !rule) { | |
683d081a JR |
718 | status = LTTNG_CONDITION_STATUS_INVALID; |
719 | goto end; | |
720 | } | |
721 | ||
8dbb86b8 JR |
722 | event_rule = container_of(condition, |
723 | struct lttng_condition_event_rule_matches, parent); | |
683d081a JR |
724 | if (!event_rule->rule) { |
725 | status = LTTNG_CONDITION_STATUS_UNSET; | |
726 | goto end; | |
727 | } | |
728 | ||
729 | *rule = event_rule->rule; | |
730 | end: | |
731 | return status; | |
732 | } | |
733 | ||
8dbb86b8 | 734 | enum lttng_condition_status lttng_condition_event_rule_matches_get_rule( |
683d081a JR |
735 | const struct lttng_condition *condition, |
736 | const struct lttng_event_rule **rule) | |
737 | { | |
738 | struct lttng_event_rule *mutable_rule = NULL; | |
739 | const enum lttng_condition_status status = | |
8dbb86b8 JR |
740 | lttng_condition_event_rule_matches_borrow_rule_mutable( |
741 | condition, &mutable_rule); | |
683d081a JR |
742 | |
743 | *rule = mutable_rule; | |
744 | return status; | |
745 | } | |
746 | ||
35a9ac41 | 747 | LTTNG_HIDDEN |
8dbb86b8 | 748 | void lttng_condition_event_rule_matches_set_error_counter_index( |
35a9ac41 FD |
749 | struct lttng_condition *condition, uint64_t error_counter_index) |
750 | { | |
8dbb86b8 | 751 | struct lttng_condition_event_rule_matches *event_rule_matches_cond = |
35a9ac41 | 752 | container_of(condition, |
8dbb86b8 JR |
753 | struct lttng_condition_event_rule_matches, |
754 | parent); | |
35a9ac41 | 755 | |
8dbb86b8 JR |
756 | LTTNG_OPTIONAL_SET(&event_rule_matches_cond->error_counter_index, |
757 | error_counter_index); | |
35a9ac41 FD |
758 | } |
759 | ||
760 | LTTNG_HIDDEN | |
8dbb86b8 | 761 | uint64_t lttng_condition_event_rule_matches_get_error_counter_index( |
35a9ac41 FD |
762 | const struct lttng_condition *condition) |
763 | { | |
8dbb86b8 JR |
764 | const struct lttng_condition_event_rule_matches |
765 | *event_rule_matches_cond = container_of(condition, | |
766 | const struct lttng_condition_event_rule_matches, | |
767 | parent); | |
35a9ac41 | 768 | |
8dbb86b8 | 769 | return LTTNG_OPTIONAL_GET(event_rule_matches_cond->error_counter_index); |
35a9ac41 FD |
770 | } |
771 | ||
38114013 | 772 | enum lttng_condition_status |
8dbb86b8 | 773 | lttng_condition_event_rule_matches_append_capture_descriptor( |
38114013 PP |
774 | struct lttng_condition *condition, |
775 | struct lttng_event_expr *expr) | |
776 | { | |
777 | int ret; | |
778 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
8dbb86b8 | 779 | struct lttng_condition_event_rule_matches *event_rule_matches_cond = |
38114013 | 780 | container_of(condition, |
8dbb86b8 JR |
781 | struct lttng_condition_event_rule_matches, |
782 | parent); | |
0912b5ea | 783 | struct lttng_capture_descriptor *descriptor = NULL; |
81d566c9 | 784 | const struct lttng_event_rule *rule = NULL; |
38114013 PP |
785 | |
786 | /* Only accept l-values. */ | |
8dbb86b8 JR |
787 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition) || |
788 | !expr || !lttng_event_expr_is_lvalue(expr)) { | |
38114013 | 789 | status = LTTNG_CONDITION_STATUS_INVALID; |
81d566c9 JR |
790 | goto end; |
791 | } | |
792 | ||
8dbb86b8 | 793 | status = lttng_condition_event_rule_matches_get_rule(condition, &rule); |
81d566c9 JR |
794 | if (status != LTTNG_CONDITION_STATUS_OK) { |
795 | goto end; | |
796 | } | |
797 | ||
798 | switch(lttng_event_rule_get_type(rule)) { | |
695f7044 JR |
799 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: |
800 | case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT: | |
801 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
802 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
803 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
4f7da553 | 804 | case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL: |
81d566c9 JR |
805 | /* Supported. */ |
806 | status = LTTNG_CONDITION_STATUS_OK; | |
807 | break; | |
808 | case LTTNG_EVENT_RULE_TYPE_UNKNOWN: | |
809 | status = LTTNG_CONDITION_STATUS_INVALID; | |
810 | break; | |
811 | default: | |
812 | status = LTTNG_CONDITION_STATUS_UNSUPPORTED; | |
813 | break; | |
814 | } | |
815 | ||
816 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
38114013 PP |
817 | goto end; |
818 | } | |
819 | ||
0912b5ea JR |
820 | descriptor = malloc(sizeof(*descriptor)); |
821 | if (descriptor == NULL) { | |
822 | status = LTTNG_CONDITION_STATUS_ERROR; | |
823 | goto end; | |
824 | } | |
825 | ||
826 | descriptor->event_expression = expr; | |
827 | descriptor->bytecode = NULL; | |
828 | ||
38114013 | 829 | ret = lttng_dynamic_pointer_array_add_pointer( |
8dbb86b8 JR |
830 | &event_rule_matches_cond->capture_descriptors, |
831 | descriptor); | |
38114013 PP |
832 | if (ret) { |
833 | status = LTTNG_CONDITION_STATUS_ERROR; | |
834 | goto end; | |
835 | } | |
836 | ||
0912b5ea JR |
837 | /* Ownership is transfered to the internal capture_descriptors array */ |
838 | descriptor = NULL; | |
38114013 | 839 | end: |
0912b5ea | 840 | free(descriptor); |
38114013 PP |
841 | return status; |
842 | } | |
843 | ||
844 | enum lttng_condition_status | |
8dbb86b8 | 845 | lttng_condition_event_rule_matches_get_capture_descriptor_count( |
38114013 PP |
846 | const struct lttng_condition *condition, unsigned int *count) |
847 | { | |
848 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
8dbb86b8 JR |
849 | const struct lttng_condition_event_rule_matches |
850 | *event_rule_matches_condition = container_of(condition, | |
851 | const struct lttng_condition_event_rule_matches, | |
852 | parent); | |
38114013 | 853 | |
8dbb86b8 JR |
854 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition) || |
855 | !count) { | |
38114013 PP |
856 | status = LTTNG_CONDITION_STATUS_INVALID; |
857 | goto end; | |
858 | } | |
859 | ||
860 | *count = lttng_dynamic_pointer_array_get_count( | |
8dbb86b8 | 861 | &event_rule_matches_condition->capture_descriptors); |
38114013 PP |
862 | |
863 | end: | |
864 | return status; | |
865 | } | |
866 | ||
867 | const struct lttng_event_expr * | |
8dbb86b8 | 868 | lttng_condition_event_rule_matches_get_capture_descriptor_at_index( |
38114013 PP |
869 | const struct lttng_condition *condition, unsigned int index) |
870 | { | |
38114013 | 871 | const struct lttng_event_expr *expr = NULL; |
6fb7c690 | 872 | const struct lttng_capture_descriptor *desc = NULL; |
0912b5ea | 873 | |
8dbb86b8 | 874 | desc = lttng_condition_event_rule_matches_get_internal_capture_descriptor_at_index( |
6fb7c690 JR |
875 | condition, index); |
876 | if (desc == NULL) { | |
38114013 PP |
877 | goto end; |
878 | } | |
0912b5ea | 879 | expr = desc->event_expression; |
38114013 PP |
880 | |
881 | end: | |
882 | return expr; | |
883 | } | |
884 | ||
683d081a | 885 | LTTNG_HIDDEN |
8dbb86b8 JR |
886 | ssize_t lttng_evaluation_event_rule_matches_create_from_payload( |
887 | const struct lttng_condition_event_rule_matches *condition, | |
683d081a JR |
888 | struct lttng_payload_view *view, |
889 | struct lttng_evaluation **_evaluation) | |
890 | { | |
891 | ssize_t ret, offset = 0; | |
683d081a | 892 | struct lttng_evaluation *evaluation = NULL; |
7c920b63 PP |
893 | uint32_t capture_payload_size; |
894 | const char *capture_payload = NULL; | |
683d081a JR |
895 | |
896 | if (!_evaluation) { | |
897 | ret = -1; | |
898 | goto error; | |
899 | } | |
900 | ||
7c920b63 PP |
901 | { |
902 | const struct lttng_payload_view current_view = | |
903 | lttng_payload_view_from_view(view, offset, -1); | |
904 | ||
905 | if (current_view.buffer.size < sizeof(capture_payload_size)) { | |
906 | ret = -1; | |
907 | goto error; | |
908 | } | |
683d081a | 909 | |
7c920b63 PP |
910 | memcpy(&capture_payload_size, current_view.buffer.data, |
911 | sizeof(capture_payload_size)); | |
912 | } | |
913 | offset += sizeof(capture_payload_size); | |
914 | ||
915 | if (capture_payload_size > 0) { | |
916 | const struct lttng_payload_view current_view = | |
917 | lttng_payload_view_from_view(view, offset, -1); | |
918 | ||
919 | if (current_view.buffer.size < capture_payload_size) { | |
920 | ret = -1; | |
921 | goto error; | |
922 | } | |
923 | ||
924 | capture_payload = current_view.buffer.data; | |
925 | } | |
926 | ||
8dbb86b8 JR |
927 | evaluation = lttng_evaluation_event_rule_matches_create( |
928 | condition, capture_payload, capture_payload_size, true); | |
683d081a JR |
929 | if (!evaluation) { |
930 | ret = -1; | |
931 | goto error; | |
932 | } | |
933 | ||
7c920b63 | 934 | offset += capture_payload_size; |
683d081a JR |
935 | *_evaluation = evaluation; |
936 | evaluation = NULL; | |
937 | ret = offset; | |
938 | ||
939 | error: | |
940 | lttng_evaluation_destroy(evaluation); | |
941 | return ret; | |
942 | } | |
943 | ||
8dbb86b8 | 944 | static int lttng_evaluation_event_rule_matches_serialize( |
683d081a JR |
945 | const struct lttng_evaluation *evaluation, |
946 | struct lttng_payload *payload) | |
947 | { | |
948 | int ret = 0; | |
8dbb86b8 | 949 | struct lttng_evaluation_event_rule_matches *hit; |
7c920b63 | 950 | uint32_t capture_payload_size; |
683d081a | 951 | |
8dbb86b8 JR |
952 | hit = container_of(evaluation, |
953 | struct lttng_evaluation_event_rule_matches, parent); | |
683d081a | 954 | |
7c920b63 PP |
955 | capture_payload_size = (uint32_t) hit->capture_payload.size; |
956 | ret = lttng_dynamic_buffer_append(&payload->buffer, &capture_payload_size, | |
957 | sizeof(capture_payload_size)); | |
958 | if (ret) { | |
959 | goto end; | |
960 | } | |
961 | ||
962 | ret = lttng_dynamic_buffer_append(&payload->buffer, hit->capture_payload.data, | |
963 | hit->capture_payload.size); | |
964 | if (ret) { | |
965 | goto end; | |
966 | } | |
967 | ||
968 | end: | |
969 | return ret; | |
970 | } | |
971 | ||
972 | static | |
973 | bool msgpack_str_is_equal(const struct msgpack_object *obj, const char *str) | |
974 | { | |
975 | bool is_equal = true; | |
976 | ||
977 | assert(obj->type == MSGPACK_OBJECT_STR); | |
978 | ||
979 | if (obj->via.str.size != strlen(str)) { | |
980 | is_equal = false; | |
981 | goto end; | |
982 | } | |
983 | ||
984 | if (strncmp(obj->via.str.ptr, str, obj->via.str.size) != 0) { | |
985 | is_equal = false; | |
986 | goto end; | |
987 | } | |
988 | ||
989 | end: | |
990 | return is_equal; | |
991 | } | |
992 | ||
993 | static | |
994 | const msgpack_object *get_msgpack_map_obj(const struct msgpack_object *map_obj, | |
995 | const char *name) | |
996 | { | |
997 | const msgpack_object *ret = NULL; | |
998 | size_t i; | |
999 | ||
1000 | assert(map_obj->type == MSGPACK_OBJECT_MAP); | |
1001 | ||
1002 | for (i = 0; i < map_obj->via.map.size; i++) { | |
1003 | const struct msgpack_object_kv *kv = &map_obj->via.map.ptr[i]; | |
1004 | ||
1005 | assert(kv->key.type == MSGPACK_OBJECT_STR); | |
1006 | ||
1007 | if (msgpack_str_is_equal(&kv->key, name)) { | |
1008 | ret = &kv->val; | |
1009 | goto end; | |
1010 | } | |
1011 | } | |
1012 | ||
683d081a JR |
1013 | end: |
1014 | return ret; | |
1015 | } | |
1016 | ||
8dbb86b8 | 1017 | static void lttng_evaluation_event_rule_matches_destroy( |
683d081a JR |
1018 | struct lttng_evaluation *evaluation) |
1019 | { | |
8dbb86b8 | 1020 | struct lttng_evaluation_event_rule_matches *hit; |
683d081a | 1021 | |
8dbb86b8 JR |
1022 | hit = container_of(evaluation, |
1023 | struct lttng_evaluation_event_rule_matches, parent); | |
7c920b63 PP |
1024 | lttng_dynamic_buffer_reset(&hit->capture_payload); |
1025 | lttng_event_field_value_destroy(hit->captured_values); | |
683d081a JR |
1026 | free(hit); |
1027 | } | |
1028 | ||
7c920b63 PP |
1029 | static |
1030 | int event_field_value_from_obj(const msgpack_object *obj, | |
1031 | struct lttng_event_field_value **field_val) | |
1032 | { | |
1033 | int ret = 0; | |
1034 | ||
1035 | assert(obj); | |
1036 | assert(field_val); | |
1037 | ||
1038 | switch (obj->type) { | |
1039 | case MSGPACK_OBJECT_NIL: | |
1040 | /* Unavailable. */ | |
1041 | *field_val = NULL; | |
1042 | goto end; | |
1043 | case MSGPACK_OBJECT_POSITIVE_INTEGER: | |
1044 | *field_val = lttng_event_field_value_uint_create( | |
1045 | obj->via.u64); | |
1046 | break; | |
1047 | case MSGPACK_OBJECT_NEGATIVE_INTEGER: | |
1048 | *field_val = lttng_event_field_value_int_create( | |
1049 | obj->via.i64); | |
1050 | break; | |
1051 | case MSGPACK_OBJECT_FLOAT32: | |
1052 | case MSGPACK_OBJECT_FLOAT64: | |
1053 | *field_val = lttng_event_field_value_real_create( | |
1054 | obj->via.f64); | |
1055 | break; | |
1056 | case MSGPACK_OBJECT_STR: | |
1057 | *field_val = lttng_event_field_value_string_create_with_size( | |
1058 | obj->via.str.ptr, obj->via.str.size); | |
1059 | break; | |
1060 | case MSGPACK_OBJECT_ARRAY: | |
1061 | { | |
1062 | size_t i; | |
1063 | ||
1064 | *field_val = lttng_event_field_value_array_create(); | |
1065 | if (!*field_val) { | |
1066 | goto error; | |
1067 | } | |
1068 | ||
1069 | for (i = 0; i < obj->via.array.size; i++) { | |
1070 | const msgpack_object *elem_obj = &obj->via.array.ptr[i]; | |
1071 | struct lttng_event_field_value *elem_field_val; | |
1072 | ||
1073 | ret = event_field_value_from_obj(elem_obj, | |
1074 | &elem_field_val); | |
1075 | if (ret) { | |
1076 | goto error; | |
1077 | } | |
1078 | ||
1079 | if (elem_field_val) { | |
1080 | ret = lttng_event_field_value_array_append( | |
1081 | *field_val, elem_field_val); | |
1082 | } else { | |
1083 | ret = lttng_event_field_value_array_append_unavailable( | |
1084 | *field_val); | |
1085 | } | |
1086 | ||
1087 | if (ret) { | |
1088 | lttng_event_field_value_destroy(elem_field_val); | |
1089 | goto error; | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | break; | |
1094 | } | |
1095 | case MSGPACK_OBJECT_MAP: | |
1096 | { | |
1097 | /* | |
1098 | * As of this version, the only valid map object is | |
1099 | * for an enumeration value, for example: | |
1100 | * | |
1101 | * type: enum | |
1102 | * value: 177 | |
1103 | * labels: | |
1104 | * - Labatt 50 | |
1105 | * - Molson Dry | |
1106 | * - Carling Black Label | |
1107 | */ | |
1108 | const msgpack_object *inner_obj; | |
1109 | size_t label_i; | |
1110 | ||
1111 | inner_obj = get_msgpack_map_obj(obj, "type"); | |
1112 | if (!inner_obj) { | |
1113 | ERR("Missing `type` entry in map object"); | |
1114 | goto error; | |
1115 | } | |
1116 | ||
1117 | if (inner_obj->type != MSGPACK_OBJECT_STR) { | |
1118 | ERR("Map object's `type` entry is not a string: type = %s", | |
1119 | msgpack_object_type_str(inner_obj->type)); | |
1120 | goto error; | |
1121 | } | |
1122 | ||
1123 | if (!msgpack_str_is_equal(inner_obj, "enum")) { | |
1124 | ERR("Map object's `type` entry: expecting `enum`"); | |
1125 | goto error; | |
1126 | } | |
1127 | ||
1128 | inner_obj = get_msgpack_map_obj(obj, "value"); | |
1129 | if (!inner_obj) { | |
1130 | ERR("Missing `value` entry in map object"); | |
1131 | goto error; | |
1132 | } | |
1133 | ||
1134 | if (inner_obj->type == MSGPACK_OBJECT_POSITIVE_INTEGER) { | |
1135 | *field_val = lttng_event_field_value_enum_uint_create( | |
1136 | inner_obj->via.u64); | |
1137 | } else if (inner_obj->type == MSGPACK_OBJECT_NEGATIVE_INTEGER) { | |
1138 | *field_val = lttng_event_field_value_enum_int_create( | |
1139 | inner_obj->via.i64); | |
1140 | } else { | |
1141 | ERR("Map object's `value` entry is not an integer: type = %s", | |
1142 | msgpack_object_type_str(inner_obj->type)); | |
1143 | goto error; | |
1144 | } | |
1145 | ||
1146 | if (!*field_val) { | |
1147 | goto error; | |
1148 | } | |
1149 | ||
1150 | inner_obj = get_msgpack_map_obj(obj, "labels"); | |
1151 | if (!inner_obj) { | |
1152 | /* No labels */ | |
1153 | goto end; | |
1154 | } | |
1155 | ||
1156 | if (inner_obj->type != MSGPACK_OBJECT_ARRAY) { | |
1157 | ERR("Map object's `labels` entry is not an array: type = %s", | |
1158 | msgpack_object_type_str(inner_obj->type)); | |
1159 | goto error; | |
1160 | } | |
1161 | ||
1162 | for (label_i = 0; label_i < inner_obj->via.array.size; | |
1163 | label_i++) { | |
1164 | int iret; | |
1165 | const msgpack_object *elem_obj = | |
1166 | &inner_obj->via.array.ptr[label_i]; | |
1167 | ||
1168 | if (elem_obj->type != MSGPACK_OBJECT_STR) { | |
1169 | ERR("Map object's `labels` entry's type is not a string: type = %s", | |
1170 | msgpack_object_type_str(elem_obj->type)); | |
1171 | goto error; | |
1172 | } | |
1173 | ||
1174 | iret = lttng_event_field_value_enum_append_label_with_size( | |
1175 | *field_val, elem_obj->via.str.ptr, | |
1176 | elem_obj->via.str.size); | |
1177 | if (iret) { | |
1178 | goto error; | |
1179 | } | |
1180 | } | |
1181 | ||
1182 | break; | |
1183 | } | |
1184 | default: | |
1185 | ERR("Unexpected object type: type = %s", | |
1186 | msgpack_object_type_str(obj->type)); | |
1187 | goto error; | |
1188 | } | |
1189 | ||
1190 | if (!*field_val) { | |
1191 | goto error; | |
1192 | } | |
1193 | ||
1194 | goto end; | |
1195 | ||
1196 | error: | |
1197 | lttng_event_field_value_destroy(*field_val); | |
1198 | *field_val = NULL; | |
1199 | ret = -1; | |
1200 | ||
1201 | end: | |
1202 | return ret; | |
1203 | } | |
1204 | ||
8dbb86b8 JR |
1205 | static struct lttng_event_field_value *event_field_value_from_capture_payload( |
1206 | const struct lttng_condition_event_rule_matches *condition, | |
1207 | const char *capture_payload, | |
1208 | size_t capture_payload_size) | |
7c920b63 PP |
1209 | { |
1210 | struct lttng_event_field_value *ret = NULL; | |
1211 | msgpack_unpacked unpacked; | |
1212 | msgpack_unpack_return unpack_return; | |
1213 | const msgpack_object *root_obj; | |
1214 | const msgpack_object_array *root_array_obj; | |
1215 | size_t i; | |
1216 | size_t count; | |
1217 | ||
1218 | assert(condition); | |
1219 | assert(capture_payload); | |
1220 | ||
1221 | /* Initialize value. */ | |
1222 | msgpack_unpacked_init(&unpacked); | |
1223 | ||
1224 | /* Decode. */ | |
1225 | unpack_return = msgpack_unpack_next(&unpacked, capture_payload, | |
1226 | capture_payload_size, NULL); | |
1227 | if (unpack_return != MSGPACK_UNPACK_SUCCESS) { | |
1228 | ERR("msgpack_unpack_next() failed to decode the " | |
1229 | "MessagePack-encoded capture payload: " | |
1230 | "size = %zu, ret = %d", | |
1231 | capture_payload_size, unpack_return); | |
1232 | goto error; | |
1233 | } | |
1234 | ||
1235 | /* Get root array. */ | |
1236 | root_obj = &unpacked.data; | |
1237 | ||
1238 | if (root_obj->type != MSGPACK_OBJECT_ARRAY) { | |
1239 | ERR("Expecting an array as the root object: type = %s", | |
1240 | msgpack_object_type_str(root_obj->type)); | |
1241 | goto error; | |
1242 | } | |
1243 | ||
1244 | root_array_obj = &root_obj->via.array; | |
1245 | ||
1246 | /* Create an empty root array event field value. */ | |
1247 | ret = lttng_event_field_value_array_create(); | |
1248 | if (!ret) { | |
1249 | goto error; | |
1250 | } | |
1251 | ||
1252 | /* | |
1253 | * For each capture descriptor in the condition object: | |
1254 | * | |
1255 | * 1. Get its corresponding captured field value MessagePack | |
1256 | * object. | |
1257 | * | |
1258 | * 2. Create a corresponding event field value. | |
1259 | * | |
1260 | * 3. Append it to `ret` (the root array event field value). | |
1261 | */ | |
1262 | count = lttng_dynamic_pointer_array_get_count( | |
1263 | &condition->capture_descriptors); | |
1264 | assert(count > 0); | |
1265 | ||
1266 | for (i = 0; i < count; i++) { | |
1267 | const struct lttng_capture_descriptor *capture_descriptor = | |
8dbb86b8 | 1268 | lttng_condition_event_rule_matches_get_internal_capture_descriptor_at_index( |
7c920b63 PP |
1269 | &condition->parent, i); |
1270 | const msgpack_object *elem_obj; | |
1271 | struct lttng_event_field_value *elem_field_val; | |
1272 | int iret; | |
1273 | ||
1274 | assert(capture_descriptor); | |
1275 | ||
1276 | elem_obj = &root_array_obj->ptr[i]; | |
1277 | iret = event_field_value_from_obj(elem_obj, | |
1278 | &elem_field_val); | |
1279 | if (iret) { | |
1280 | goto error; | |
1281 | } | |
1282 | ||
1283 | if (elem_field_val) { | |
1284 | iret = lttng_event_field_value_array_append(ret, | |
1285 | elem_field_val); | |
1286 | } else { | |
1287 | iret = lttng_event_field_value_array_append_unavailable( | |
1288 | ret); | |
1289 | } | |
1290 | ||
1291 | if (iret) { | |
1292 | lttng_event_field_value_destroy(elem_field_val); | |
1293 | goto error; | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | goto end; | |
1298 | ||
1299 | error: | |
1300 | lttng_event_field_value_destroy(ret); | |
1301 | ret = NULL; | |
1302 | ||
1303 | end: | |
1304 | msgpack_unpacked_destroy(&unpacked); | |
1305 | return ret; | |
1306 | } | |
1307 | ||
683d081a | 1308 | LTTNG_HIDDEN |
8dbb86b8 JR |
1309 | struct lttng_evaluation *lttng_evaluation_event_rule_matches_create( |
1310 | const struct lttng_condition_event_rule_matches *condition, | |
1311 | const char *capture_payload, | |
1312 | size_t capture_payload_size, | |
7c920b63 | 1313 | bool decode_capture_payload) |
683d081a | 1314 | { |
8dbb86b8 | 1315 | struct lttng_evaluation_event_rule_matches *hit; |
683d081a JR |
1316 | struct lttng_evaluation *evaluation = NULL; |
1317 | ||
8dbb86b8 | 1318 | hit = zmalloc(sizeof(struct lttng_evaluation_event_rule_matches)); |
683d081a | 1319 | if (!hit) { |
7c920b63 | 1320 | goto error; |
683d081a JR |
1321 | } |
1322 | ||
7c920b63 PP |
1323 | lttng_dynamic_buffer_init(&hit->capture_payload); |
1324 | ||
1325 | if (capture_payload) { | |
1326 | const int ret = lttng_dynamic_buffer_append( | |
1327 | &hit->capture_payload, capture_payload, | |
1328 | capture_payload_size); | |
1329 | if (ret) { | |
1330 | ERR("Failed to initialize capture payload of event rule evaluation"); | |
1331 | goto error; | |
1332 | } | |
1333 | ||
1334 | if (decode_capture_payload) { | |
1335 | hit->captured_values = | |
1336 | event_field_value_from_capture_payload( | |
1337 | condition, | |
1338 | capture_payload, | |
1339 | capture_payload_size); | |
1340 | if (!hit->captured_values) { | |
1341 | ERR("Failed to decode the capture payload: size = %zu", | |
1342 | capture_payload_size); | |
1343 | goto error; | |
1344 | } | |
1345 | } | |
683d081a JR |
1346 | } |
1347 | ||
8dbb86b8 JR |
1348 | hit->parent.type = LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES; |
1349 | hit->parent.serialize = lttng_evaluation_event_rule_matches_serialize; | |
1350 | hit->parent.destroy = lttng_evaluation_event_rule_matches_destroy; | |
683d081a JR |
1351 | |
1352 | evaluation = &hit->parent; | |
1353 | hit = NULL; | |
1354 | ||
7c920b63 | 1355 | error: |
683d081a | 1356 | if (hit) { |
8dbb86b8 | 1357 | lttng_evaluation_event_rule_matches_destroy(&hit->parent); |
683d081a JR |
1358 | } |
1359 | ||
1360 | return evaluation; | |
1361 | } | |
1362 | ||
8dbb86b8 JR |
1363 | enum lttng_evaluation_event_rule_matches_status |
1364 | lttng_evaluation_event_rule_matches_get_captured_values( | |
7c920b63 PP |
1365 | const struct lttng_evaluation *evaluation, |
1366 | const struct lttng_event_field_value **field_val) | |
1367 | { | |
8dbb86b8 JR |
1368 | struct lttng_evaluation_event_rule_matches *hit; |
1369 | enum lttng_evaluation_event_rule_matches_status status = | |
1370 | LTTNG_EVALUATION_EVENT_RULE_MATCHES_STATUS_OK; | |
7c920b63 | 1371 | |
8dbb86b8 | 1372 | if (!evaluation || !is_event_rule_matches_evaluation(evaluation) || |
7c920b63 | 1373 | !field_val) { |
8dbb86b8 | 1374 | status = LTTNG_EVALUATION_EVENT_RULE_MATCHES_STATUS_INVALID; |
7c920b63 PP |
1375 | goto end; |
1376 | } | |
1377 | ||
8dbb86b8 JR |
1378 | hit = container_of(evaluation, |
1379 | struct lttng_evaluation_event_rule_matches, parent); | |
7c920b63 | 1380 | if (!hit->captured_values) { |
8dbb86b8 | 1381 | status = LTTNG_EVALUATION_EVENT_RULE_MATCHES_STATUS_NONE; |
7c920b63 PP |
1382 | goto end; |
1383 | } | |
1384 | ||
1385 | *field_val = hit->captured_values; | |
1386 | ||
1387 | end: | |
1388 | return status; | |
683d081a | 1389 | } |
834966af JR |
1390 | |
1391 | LTTNG_HIDDEN | |
1392 | enum lttng_error_code | |
8dbb86b8 | 1393 | lttng_condition_event_rule_matches_generate_capture_descriptor_bytecode( |
834966af JR |
1394 | struct lttng_condition *condition) |
1395 | { | |
1396 | enum lttng_error_code ret; | |
1397 | enum lttng_condition_status status; | |
1398 | unsigned int capture_count, i; | |
1399 | ||
8dbb86b8 | 1400 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition)) { |
834966af JR |
1401 | ret = LTTNG_ERR_FATAL; |
1402 | goto end; | |
1403 | } | |
1404 | ||
8dbb86b8 | 1405 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( |
834966af JR |
1406 | condition, &capture_count); |
1407 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
1408 | ret = LTTNG_ERR_FATAL; | |
1409 | goto end; | |
1410 | } | |
1411 | ||
1412 | for (i = 0; i < capture_count; i++) { | |
1413 | struct lttng_capture_descriptor *local_capture_desc = | |
8dbb86b8 | 1414 | lttng_condition_event_rule_matches_get_internal_capture_descriptor_at_index( |
834966af JR |
1415 | condition, i); |
1416 | ||
1417 | if (local_capture_desc == NULL) { | |
1418 | ret = LTTNG_ERR_FATAL; | |
1419 | goto end; | |
1420 | } | |
1421 | ||
1422 | /* Generate the bytecode. */ | |
1423 | status = lttng_event_expr_to_bytecode( | |
1424 | local_capture_desc->event_expression, | |
1425 | &local_capture_desc->bytecode); | |
1426 | if (status < 0 || local_capture_desc->bytecode == NULL) { | |
1427 | ret = LTTNG_ERR_INVALID_CAPTURE_EXPRESSION; | |
1428 | goto end; | |
1429 | } | |
1430 | } | |
1431 | ||
1432 | /* Everything went better than expected */ | |
1433 | ret = LTTNG_OK; | |
1434 | ||
1435 | end: | |
1436 | return ret; | |
1437 | } | |
51dbe985 JR |
1438 | |
1439 | LTTNG_HIDDEN | |
1440 | const struct lttng_bytecode * | |
8dbb86b8 | 1441 | lttng_condition_event_rule_matches_get_capture_bytecode_at_index( |
51dbe985 JR |
1442 | const struct lttng_condition *condition, unsigned int index) |
1443 | { | |
8dbb86b8 JR |
1444 | const struct lttng_condition_event_rule_matches |
1445 | *event_rule_matches_cond = container_of(condition, | |
1446 | const struct lttng_condition_event_rule_matches, | |
1447 | parent); | |
51dbe985 JR |
1448 | struct lttng_capture_descriptor *desc = NULL; |
1449 | struct lttng_bytecode *bytecode = NULL; | |
1450 | unsigned int count; | |
1451 | enum lttng_condition_status status; | |
1452 | ||
8dbb86b8 | 1453 | if (!condition || !IS_EVENT_RULE_MATCHES_CONDITION(condition)) { |
51dbe985 JR |
1454 | goto end; |
1455 | } | |
1456 | ||
8dbb86b8 | 1457 | status = lttng_condition_event_rule_matches_get_capture_descriptor_count( |
51dbe985 JR |
1458 | condition, &count); |
1459 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
1460 | goto end; | |
1461 | } | |
1462 | ||
1463 | if (index >= count) { | |
1464 | goto end; | |
1465 | } | |
1466 | ||
1467 | desc = lttng_dynamic_pointer_array_get_pointer( | |
8dbb86b8 | 1468 | &event_rule_matches_cond->capture_descriptors, index); |
51dbe985 JR |
1469 | if (desc == NULL) { |
1470 | goto end; | |
1471 | } | |
1472 | ||
1473 | bytecode = desc->bytecode; | |
1474 | end: | |
1475 | return bytecode; | |
1476 | } |