Commit | Line | Data |
---|---|---|
b178f53e | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2019 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
b178f53e | 3 | * |
c922647d | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
b178f53e JG |
5 | */ |
6 | ||
c9e313bc SM |
7 | #include <lttng/session-descriptor-internal.hpp> |
8 | #include <common/macros.hpp> | |
9 | #include <common/uri.hpp> | |
10 | #include <common/defaults.hpp> | |
11 | #include <common/error.hpp> | |
b178f53e | 12 | #include <time.h> |
b178f53e JG |
13 | #include <stdio.h> |
14 | ||
f1494934 | 15 | namespace { |
b178f53e JG |
16 | struct lttng_session_descriptor_network_location { |
17 | struct lttng_uri *control; | |
18 | struct lttng_uri *data; | |
19 | }; | |
f1494934 | 20 | } /* namespace */ |
b178f53e JG |
21 | |
22 | struct lttng_session_descriptor { | |
23 | enum lttng_session_descriptor_type type; | |
24 | /* | |
25 | * If an output type that is not OUTPUT_TYPE_NONE is specified, | |
26 | * it means that an output of that type must be generated at | |
27 | * session-creation time. | |
28 | */ | |
29 | enum lttng_session_descriptor_output_type output_type; | |
30 | char *name; | |
31 | union { | |
32 | struct lttng_session_descriptor_network_location network; | |
33 | struct lttng_uri *local; | |
34 | } output; | |
35 | }; | |
36 | ||
f1494934 | 37 | namespace { |
b178f53e JG |
38 | struct lttng_session_descriptor_snapshot { |
39 | struct lttng_session_descriptor base; | |
40 | /* | |
41 | * Assumes at-most one snapshot output is supported. Uses | |
42 | * the output field of the base class. | |
43 | */ | |
44 | }; | |
45 | ||
46 | struct lttng_session_descriptor_live { | |
47 | struct lttng_session_descriptor base; | |
48 | unsigned long long live_timer_us; | |
49 | }; | |
50 | ||
51 | struct lttng_session_descriptor_comm { | |
52 | /* enum lttng_session_descriptor_type */ | |
53 | uint8_t type; | |
54 | /* enum lttng_session_descriptor_output_type */ | |
55 | uint8_t output_type; | |
56 | /* Includes trailing null. */ | |
57 | uint32_t name_len; | |
58 | /* Name follows, followed by URIs */ | |
59 | uint8_t uri_count; | |
60 | } LTTNG_PACKED; | |
61 | ||
62 | struct lttng_session_descriptor_live_comm { | |
63 | struct lttng_session_descriptor_comm base; | |
64 | /* Live-specific parameters. */ | |
65 | uint64_t live_timer_us; | |
66 | } LTTNG_PACKED; | |
f1494934 | 67 | } /* namespace */ |
b178f53e JG |
68 | |
69 | static | |
70 | struct lttng_uri *uri_copy(const struct lttng_uri *uri) | |
71 | { | |
72 | struct lttng_uri *new_uri = NULL; | |
73 | ||
74 | if (!uri) { | |
75 | goto end; | |
76 | } | |
77 | ||
64803277 | 78 | new_uri = zmalloc<lttng_uri>(); |
b178f53e JG |
79 | if (!new_uri) { |
80 | goto end; | |
81 | } | |
82 | memcpy(new_uri, uri, sizeof(*new_uri)); | |
83 | end: | |
84 | return new_uri; | |
85 | } | |
86 | ||
87 | static | |
88 | struct lttng_uri *uri_from_path(const char *path) | |
89 | { | |
90 | struct lttng_uri *uris = NULL; | |
91 | ssize_t uri_count; | |
92 | char local_protocol_string[LTTNG_PATH_MAX + sizeof("file://")] = | |
93 | "file://"; | |
94 | ||
95 | if (strlen(path) >= LTTNG_PATH_MAX) { | |
96 | goto end; | |
97 | } | |
98 | ||
99 | if (path[0] != '/') { | |
100 | /* Not an absolute path. */ | |
101 | goto end; | |
102 | } | |
103 | ||
104 | strncat(local_protocol_string, path, LTTNG_PATH_MAX); | |
105 | uri_count = uri_parse(local_protocol_string, &uris); | |
106 | if (uri_count != 1) { | |
107 | goto error; | |
108 | } | |
109 | if (uris[0].dtype != LTTNG_DST_PATH) { | |
110 | goto error; | |
111 | } | |
112 | ||
113 | end: | |
114 | return uris; | |
115 | error: | |
116 | free(uris); | |
117 | return NULL; | |
118 | } | |
119 | ||
120 | static | |
121 | void network_location_fini( | |
122 | struct lttng_session_descriptor_network_location *location) | |
123 | { | |
124 | free(location->control); | |
125 | free(location->data); | |
126 | } | |
127 | ||
128 | /* Assumes ownership of control and data. */ | |
129 | static | |
130 | int network_location_set_from_lttng_uris( | |
131 | struct lttng_session_descriptor_network_location *location, | |
132 | struct lttng_uri *control, struct lttng_uri *data) | |
133 | { | |
134 | int ret = 0; | |
135 | ||
136 | if (!control && !data) { | |
137 | goto end; | |
138 | } | |
139 | ||
140 | if (!(control && data)) { | |
141 | /* None or both must be set. */ | |
142 | ret = -1; | |
143 | goto end; | |
144 | } | |
145 | ||
146 | if (control->stype != LTTNG_STREAM_CONTROL || | |
147 | data->stype != LTTNG_STREAM_DATA) { | |
148 | ret = -1; | |
149 | goto end; | |
150 | } | |
151 | ||
152 | free(location->control); | |
153 | free(location->data); | |
154 | location->control = control; | |
155 | location->data = data; | |
156 | control = NULL; | |
157 | data = NULL; | |
158 | end: | |
159 | free(control); | |
160 | free(data); | |
161 | return ret; | |
162 | } | |
163 | ||
164 | static | |
165 | int network_location_set_from_uri_strings( | |
166 | struct lttng_session_descriptor_network_location *location, | |
167 | const char *control, const char *data) | |
168 | { | |
169 | int ret = 0; | |
170 | ssize_t uri_count; | |
171 | struct lttng_uri *parsed_uris = NULL; | |
172 | struct lttng_uri *control_uri = NULL; | |
173 | struct lttng_uri *data_uri = NULL; | |
174 | ||
175 | uri_count = uri_parse_str_urls(control, data, &parsed_uris); | |
176 | if (uri_count != 2 && uri_count != 0) { | |
177 | ret = -1; | |
178 | goto end; | |
179 | } | |
180 | ||
181 | /* | |
182 | * uri_parse_str_urls returns a contiguous array of lttng_uris whereas | |
183 | * session descriptors expect individually allocated lttng_uris. | |
184 | */ | |
185 | if (uri_count == 2) { | |
64803277 SM |
186 | control_uri = zmalloc<lttng_uri>(); |
187 | data_uri = zmalloc<lttng_uri>(); | |
b178f53e JG |
188 | if (!control_uri || !data_uri) { |
189 | ret = -1; | |
190 | goto end; | |
191 | } | |
192 | memcpy(control_uri, &parsed_uris[0], sizeof(*control_uri)); | |
193 | memcpy(data_uri, &parsed_uris[1], sizeof(*data_uri)); | |
194 | } | |
195 | ||
196 | /* Ownership of control and data uris is transferred. */ | |
197 | ret = network_location_set_from_lttng_uris( | |
198 | location, | |
199 | control_uri, | |
200 | data_uri); | |
201 | control_uri = NULL; | |
202 | data_uri = NULL; | |
203 | end: | |
204 | free(parsed_uris); | |
205 | free(control_uri); | |
206 | free(data_uri); | |
207 | return ret; | |
208 | } | |
209 | ||
210 | struct lttng_session_descriptor * | |
211 | lttng_session_descriptor_create(const char *name) | |
212 | { | |
213 | struct lttng_session_descriptor *descriptor; | |
214 | ||
64803277 | 215 | descriptor = zmalloc<lttng_session_descriptor>(); |
b178f53e JG |
216 | if (!descriptor) { |
217 | goto error; | |
218 | } | |
219 | ||
220 | descriptor->type = LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR; | |
221 | descriptor->output_type = | |
222 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE; | |
223 | if (lttng_session_descriptor_set_session_name(descriptor, name)) { | |
224 | goto error; | |
225 | } | |
226 | return descriptor; | |
227 | error: | |
228 | lttng_session_descriptor_destroy(descriptor); | |
229 | return NULL; | |
230 | } | |
231 | ||
232 | /* Ownership of uri is transferred. */ | |
233 | static | |
234 | struct lttng_session_descriptor * | |
235 | _lttng_session_descriptor_local_create(const char *name, | |
236 | struct lttng_uri *uri) | |
237 | { | |
238 | struct lttng_session_descriptor *descriptor; | |
239 | ||
240 | descriptor = lttng_session_descriptor_create(name); | |
241 | if (!descriptor) { | |
242 | goto error; | |
243 | } | |
244 | descriptor->type = LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR; | |
245 | descriptor->output_type = | |
246 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL; | |
247 | if (uri) { | |
248 | if (uri->dtype != LTTNG_DST_PATH) { | |
249 | goto error; | |
250 | } | |
251 | descriptor->output.local = uri; | |
252 | uri = NULL; | |
253 | } | |
254 | return descriptor; | |
255 | error: | |
256 | free(uri); | |
257 | lttng_session_descriptor_destroy(descriptor); | |
258 | return NULL; | |
259 | } | |
260 | ||
261 | struct lttng_session_descriptor * | |
262 | lttng_session_descriptor_local_create(const char *name, const char *path) | |
263 | { | |
264 | struct lttng_uri *uri = NULL; | |
265 | struct lttng_session_descriptor *descriptor; | |
266 | ||
267 | if (path) { | |
268 | uri = uri_from_path(path); | |
269 | if (!uri) { | |
270 | goto error; | |
271 | } | |
272 | } | |
273 | descriptor = _lttng_session_descriptor_local_create(name, uri); | |
274 | return descriptor; | |
275 | error: | |
276 | return NULL; | |
277 | } | |
278 | ||
279 | /* Assumes the ownership of both uris. */ | |
280 | static | |
281 | struct lttng_session_descriptor * | |
282 | _lttng_session_descriptor_network_create(const char *name, | |
283 | struct lttng_uri *control, struct lttng_uri *data) | |
284 | { | |
285 | int ret; | |
286 | struct lttng_session_descriptor *descriptor; | |
287 | ||
288 | descriptor = lttng_session_descriptor_create(name); | |
289 | if (!descriptor) { | |
290 | goto error; | |
291 | } | |
292 | ||
293 | descriptor->type = LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR; | |
294 | descriptor->output_type = LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK; | |
295 | /* Assumes the ownership of both uris. */ | |
296 | ret = network_location_set_from_lttng_uris(&descriptor->output.network, | |
297 | control, data); | |
298 | control = NULL; | |
299 | data = NULL; | |
300 | if (ret) { | |
301 | goto error; | |
302 | } | |
303 | return descriptor; | |
304 | error: | |
305 | lttng_session_descriptor_destroy(descriptor); | |
306 | free(control); | |
307 | free(data); | |
308 | return NULL; | |
309 | } | |
310 | ||
311 | struct lttng_session_descriptor * | |
312 | lttng_session_descriptor_network_create(const char *name, | |
313 | const char *control_url, const char *data_url) | |
314 | { | |
315 | int ret; | |
316 | struct lttng_session_descriptor *descriptor; | |
317 | ||
318 | descriptor = _lttng_session_descriptor_network_create(name, | |
319 | NULL, NULL); | |
320 | if (!descriptor) { | |
321 | goto error; | |
322 | } | |
323 | ||
324 | ret = network_location_set_from_uri_strings(&descriptor->output.network, | |
325 | control_url, data_url); | |
326 | if (ret) { | |
327 | goto error; | |
328 | } | |
329 | return descriptor; | |
330 | error: | |
331 | lttng_session_descriptor_destroy(descriptor); | |
332 | return NULL; | |
333 | } | |
334 | ||
335 | static | |
336 | struct lttng_session_descriptor_snapshot * | |
337 | _lttng_session_descriptor_snapshot_create(const char *name) | |
338 | { | |
339 | struct lttng_session_descriptor_snapshot *descriptor; | |
340 | ||
64803277 | 341 | descriptor = zmalloc<lttng_session_descriptor_snapshot>(); |
b178f53e JG |
342 | if (!descriptor) { |
343 | goto error; | |
344 | } | |
345 | ||
346 | descriptor->base.type = LTTNG_SESSION_DESCRIPTOR_TYPE_SNAPSHOT; | |
347 | descriptor->base.output_type = | |
348 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE; | |
349 | if (lttng_session_descriptor_set_session_name(&descriptor->base, | |
350 | name)) { | |
351 | goto error; | |
352 | } | |
353 | return descriptor; | |
354 | error: | |
355 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
356 | return NULL; | |
357 | } | |
358 | ||
359 | /* Ownership of control and data is transferred. */ | |
360 | static | |
361 | struct lttng_session_descriptor_snapshot * | |
362 | _lttng_session_descriptor_snapshot_network_create(const char *name, | |
363 | struct lttng_uri *control, struct lttng_uri *data) | |
364 | { | |
365 | int ret; | |
366 | struct lttng_session_descriptor_snapshot *descriptor; | |
367 | ||
368 | descriptor = _lttng_session_descriptor_snapshot_create(name); | |
369 | if (!descriptor) { | |
370 | goto error; | |
371 | } | |
372 | ||
373 | descriptor->base.output_type = | |
374 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK; | |
375 | /* Ownership of control and data is transferred. */ | |
376 | ret = network_location_set_from_lttng_uris( | |
377 | &descriptor->base.output.network, | |
378 | control, data); | |
379 | control = NULL; | |
380 | data = NULL; | |
381 | if (ret) { | |
382 | goto error; | |
383 | } | |
384 | return descriptor; | |
385 | error: | |
386 | free(control); | |
387 | free(data); | |
388 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
389 | return NULL; | |
390 | } | |
391 | ||
392 | struct lttng_session_descriptor * | |
393 | lttng_session_descriptor_snapshot_create(const char *name) | |
394 | { | |
395 | struct lttng_session_descriptor_snapshot *descriptor; | |
396 | ||
397 | descriptor = _lttng_session_descriptor_snapshot_create(name); | |
398 | return descriptor ? &descriptor->base : NULL; | |
399 | } | |
400 | ||
401 | struct lttng_session_descriptor * | |
402 | lttng_session_descriptor_snapshot_network_create(const char *name, | |
403 | const char *control_url, const char *data_url) | |
404 | { | |
405 | int ret; | |
406 | struct lttng_session_descriptor_snapshot *descriptor; | |
407 | ||
408 | descriptor = _lttng_session_descriptor_snapshot_network_create(name, | |
409 | NULL, NULL); | |
410 | if (!descriptor) { | |
411 | goto error; | |
412 | } | |
413 | ||
414 | ret = network_location_set_from_uri_strings( | |
415 | &descriptor->base.output.network, | |
416 | control_url, data_url); | |
417 | if (ret) { | |
418 | goto error; | |
419 | } | |
420 | return &descriptor->base; | |
421 | error: | |
422 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
423 | return NULL; | |
424 | } | |
425 | ||
426 | /* Ownership of uri is transferred. */ | |
427 | static | |
428 | struct lttng_session_descriptor_snapshot * | |
429 | _lttng_session_descriptor_snapshot_local_create(const char *name, | |
430 | struct lttng_uri *uri) | |
431 | { | |
432 | struct lttng_session_descriptor_snapshot *descriptor; | |
433 | ||
434 | descriptor = _lttng_session_descriptor_snapshot_create(name); | |
435 | if (!descriptor) { | |
436 | goto error; | |
437 | } | |
438 | descriptor->base.output_type = | |
439 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL; | |
440 | if (uri) { | |
441 | if (uri->dtype != LTTNG_DST_PATH) { | |
442 | goto error; | |
443 | } | |
444 | descriptor->base.output.local = uri; | |
445 | uri = NULL; | |
446 | } | |
447 | return descriptor; | |
448 | error: | |
449 | free(uri); | |
450 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
451 | return NULL; | |
452 | } | |
453 | ||
454 | struct lttng_session_descriptor * | |
455 | lttng_session_descriptor_snapshot_local_create(const char *name, | |
456 | const char *path) | |
457 | { | |
458 | struct lttng_uri *path_uri = NULL; | |
459 | struct lttng_session_descriptor_snapshot *descriptor; | |
460 | ||
461 | if (path) { | |
462 | path_uri = uri_from_path(path); | |
463 | if (!path_uri) { | |
464 | goto error; | |
465 | } | |
466 | } | |
467 | descriptor = _lttng_session_descriptor_snapshot_local_create(name, | |
468 | path_uri); | |
469 | return descriptor ? &descriptor->base : NULL; | |
470 | error: | |
471 | return NULL; | |
472 | } | |
473 | ||
474 | static | |
475 | struct lttng_session_descriptor_live * | |
476 | _lttng_session_descriptor_live_create(const char *name, | |
477 | unsigned long long live_timer_interval_us) | |
478 | { | |
479 | struct lttng_session_descriptor_live *descriptor = NULL; | |
480 | ||
481 | if (live_timer_interval_us == 0) { | |
482 | goto error; | |
483 | } | |
64803277 | 484 | descriptor = zmalloc<lttng_session_descriptor_live>(); |
b178f53e JG |
485 | if (!descriptor) { |
486 | goto error; | |
487 | } | |
488 | ||
489 | descriptor->base.type = LTTNG_SESSION_DESCRIPTOR_TYPE_LIVE; | |
490 | descriptor->base.output_type = | |
491 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE; | |
492 | descriptor->live_timer_us = live_timer_interval_us; | |
493 | if (lttng_session_descriptor_set_session_name(&descriptor->base, | |
494 | name)) { | |
495 | goto error; | |
496 | } | |
497 | ||
498 | return descriptor; | |
499 | error: | |
500 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
501 | return NULL; | |
502 | } | |
503 | ||
504 | /* Ownership of control and data is transferred. */ | |
505 | static | |
506 | struct lttng_session_descriptor_live * | |
507 | _lttng_session_descriptor_live_network_create( | |
508 | const char *name, | |
509 | struct lttng_uri *control, struct lttng_uri *data, | |
510 | unsigned long long live_timer_interval_us) | |
511 | { | |
512 | int ret; | |
513 | struct lttng_session_descriptor_live *descriptor; | |
514 | ||
515 | descriptor = _lttng_session_descriptor_live_create(name, | |
516 | live_timer_interval_us); | |
ca258a7d FD |
517 | if (!descriptor) { |
518 | goto error; | |
519 | } | |
520 | ||
b178f53e JG |
521 | descriptor->base.output_type = |
522 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK; | |
523 | ||
524 | /* Ownerwhip of control and data is transferred. */ | |
525 | ret = network_location_set_from_lttng_uris( | |
526 | &descriptor->base.output.network, | |
527 | control, data); | |
528 | control = NULL; | |
529 | data = NULL; | |
530 | if (ret) { | |
531 | goto error; | |
532 | } | |
533 | return descriptor; | |
534 | error: | |
535 | free(control); | |
536 | free(data); | |
537 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
538 | return NULL; | |
539 | } | |
540 | ||
541 | struct lttng_session_descriptor * | |
542 | lttng_session_descriptor_live_create( | |
543 | const char *name, | |
544 | unsigned long long live_timer_us) | |
545 | { | |
546 | struct lttng_session_descriptor_live *descriptor; | |
547 | ||
548 | descriptor = _lttng_session_descriptor_live_create(name, live_timer_us); | |
b178f53e JG |
549 | |
550 | return descriptor ? &descriptor->base : NULL; | |
b178f53e JG |
551 | } |
552 | ||
553 | struct lttng_session_descriptor * | |
554 | lttng_session_descriptor_live_network_create( | |
555 | const char *name, | |
556 | const char *control_url, const char *data_url, | |
557 | unsigned long long live_timer_us) | |
558 | { | |
559 | int ret; | |
560 | struct lttng_session_descriptor_live *descriptor; | |
561 | ||
562 | descriptor = _lttng_session_descriptor_live_network_create(name, | |
563 | NULL, NULL, live_timer_us); | |
564 | if (!descriptor) { | |
565 | goto error; | |
566 | } | |
567 | ||
568 | ret = network_location_set_from_uri_strings( | |
569 | &descriptor->base.output.network, | |
570 | control_url, data_url); | |
571 | if (ret) { | |
572 | goto error; | |
573 | } | |
574 | return &descriptor->base; | |
575 | error: | |
576 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
577 | return NULL; | |
578 | } | |
579 | ||
580 | void lttng_session_descriptor_destroy( | |
581 | struct lttng_session_descriptor *descriptor) | |
582 | { | |
583 | if (!descriptor) { | |
584 | return; | |
585 | } | |
586 | ||
587 | switch (descriptor->output_type) { | |
588 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
589 | break; | |
590 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
591 | free(descriptor->output.local); | |
592 | break; | |
593 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
594 | network_location_fini(&descriptor->output.network); | |
595 | break; | |
596 | default: | |
597 | abort(); | |
598 | } | |
599 | ||
600 | free(descriptor->name); | |
601 | free(descriptor); | |
602 | } | |
603 | ||
b178f53e JG |
604 | ssize_t lttng_session_descriptor_create_from_buffer( |
605 | const struct lttng_buffer_view *payload, | |
606 | struct lttng_session_descriptor **descriptor) | |
607 | { | |
608 | int i; | |
609 | ssize_t offset = 0, ret; | |
610 | struct lttng_buffer_view current_view; | |
611 | const char *name = NULL; | |
612 | const struct lttng_session_descriptor_comm *base_header; | |
613 | size_t max_expected_uri_count; | |
614 | uint64_t live_timer_us = 0; | |
615 | struct lttng_uri *uris[2] = {}; | |
616 | enum lttng_session_descriptor_type type; | |
617 | enum lttng_session_descriptor_output_type output_type; | |
618 | ||
619 | current_view = lttng_buffer_view_from_view(payload, offset, | |
620 | sizeof(*base_header)); | |
3e6e0df2 | 621 | if (!lttng_buffer_view_is_valid(¤t_view)) { |
b178f53e JG |
622 | ret = -1; |
623 | goto end; | |
624 | } | |
625 | ||
3e6e0df2 | 626 | base_header = (typeof(base_header)) current_view.data; |
b178f53e JG |
627 | switch (base_header->type) { |
628 | case LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR: | |
629 | case LTTNG_SESSION_DESCRIPTOR_TYPE_SNAPSHOT: | |
630 | break; | |
631 | case LTTNG_SESSION_DESCRIPTOR_TYPE_LIVE: | |
632 | { | |
633 | const struct lttng_session_descriptor_live_comm *live_header; | |
634 | ||
635 | current_view = lttng_buffer_view_from_view(payload, offset, | |
636 | sizeof(*live_header)); | |
3e6e0df2 | 637 | if (!lttng_buffer_view_is_valid(¤t_view)) { |
b178f53e JG |
638 | ret = -1; |
639 | goto end; | |
640 | } | |
641 | ||
3e6e0df2 | 642 | live_header = (typeof(live_header)) current_view.data; |
b178f53e JG |
643 | live_timer_us = live_header->live_timer_us; |
644 | break; | |
645 | } | |
646 | default: | |
647 | ret = -1; | |
648 | goto end; | |
649 | } | |
650 | /* type has been validated. */ | |
a6bc4ca9 | 651 | type = (lttng_session_descriptor_type) base_header->type; |
b178f53e JG |
652 | |
653 | switch (base_header->output_type) { | |
654 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
655 | max_expected_uri_count = 0; | |
656 | break; | |
657 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
658 | max_expected_uri_count = 1; | |
659 | break; | |
660 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
661 | max_expected_uri_count = 2; | |
662 | break; | |
663 | default: | |
664 | ret = -1; | |
665 | goto end; | |
666 | } | |
667 | /* output_type has been validated. */ | |
a6bc4ca9 | 668 | output_type = (lttng_session_descriptor_output_type) base_header->output_type; |
b178f53e JG |
669 | |
670 | /* Skip after header. */ | |
671 | offset += current_view.size; | |
672 | if (!base_header->name_len) { | |
673 | goto skip_name; | |
674 | } | |
675 | ||
676 | /* Map the name. */ | |
677 | current_view = lttng_buffer_view_from_view(payload, offset, | |
678 | base_header->name_len); | |
3e6e0df2 | 679 | if (!lttng_buffer_view_is_valid(¤t_view)) { |
b178f53e JG |
680 | ret = -1; |
681 | goto end; | |
682 | } | |
683 | ||
3e6e0df2 | 684 | name = current_view.data; |
b178f53e JG |
685 | if (base_header->name_len == 1 || |
686 | name[base_header->name_len - 1] || | |
687 | strlen(name) != base_header->name_len - 1) { | |
688 | /* | |
689 | * Check that the name is not NULL, is NULL-terminated, and | |
690 | * does not contain a NULL before the last byte. | |
691 | */ | |
692 | ret = -1; | |
693 | goto end; | |
694 | } | |
695 | ||
696 | /* Skip after the name. */ | |
697 | offset += base_header->name_len; | |
698 | skip_name: | |
699 | if (base_header->uri_count > max_expected_uri_count) { | |
700 | ret = -1; | |
701 | goto end; | |
702 | } | |
703 | ||
704 | for (i = 0; i < base_header->uri_count; i++) { | |
705 | struct lttng_uri *uri; | |
706 | ||
707 | /* Map a URI. */ | |
708 | current_view = lttng_buffer_view_from_view(payload, | |
709 | offset, sizeof(*uri)); | |
3e6e0df2 | 710 | if (!lttng_buffer_view_is_valid(¤t_view)) { |
b178f53e JG |
711 | ret = -1; |
712 | goto end; | |
713 | } | |
3e6e0df2 JG |
714 | |
715 | uri = (typeof(uri)) current_view.data; | |
64803277 | 716 | uris[i] = zmalloc<lttng_uri>(); |
b178f53e JG |
717 | if (!uris[i]) { |
718 | ret = -1; | |
719 | goto end; | |
720 | } | |
721 | memcpy(uris[i], uri, sizeof(*uri)); | |
722 | offset += sizeof(*uri); | |
723 | } | |
724 | ||
725 | switch (type) { | |
726 | case LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR: | |
727 | switch (output_type) { | |
728 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
729 | *descriptor = lttng_session_descriptor_create(name); | |
730 | break; | |
731 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
732 | *descriptor = _lttng_session_descriptor_local_create( | |
733 | name, uris[0]); | |
734 | break; | |
735 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
736 | *descriptor = _lttng_session_descriptor_network_create( | |
737 | name, uris[0], uris[1]); | |
738 | break; | |
739 | default: | |
740 | /* Already checked. */ | |
741 | abort(); | |
742 | } | |
743 | break; | |
744 | case LTTNG_SESSION_DESCRIPTOR_TYPE_SNAPSHOT: | |
745 | { | |
746 | struct lttng_session_descriptor_snapshot *snapshot; | |
747 | switch (output_type) { | |
748 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
749 | snapshot = _lttng_session_descriptor_snapshot_create( | |
750 | name); | |
751 | break; | |
752 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
753 | snapshot = _lttng_session_descriptor_snapshot_local_create( | |
754 | name, uris[0]); | |
755 | break; | |
756 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
757 | snapshot = _lttng_session_descriptor_snapshot_network_create( | |
758 | name, uris[0], uris[1]); | |
759 | break; | |
760 | default: | |
761 | /* Already checked. */ | |
762 | abort(); | |
763 | } | |
764 | *descriptor = snapshot ? &snapshot->base : NULL; | |
765 | break; | |
766 | } | |
767 | case LTTNG_SESSION_DESCRIPTOR_TYPE_LIVE: | |
768 | { | |
769 | struct lttng_session_descriptor_live *live; | |
770 | ||
771 | switch (output_type) { | |
772 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
773 | live = _lttng_session_descriptor_live_create( | |
774 | name, live_timer_us); | |
775 | break; | |
776 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
777 | live = _lttng_session_descriptor_live_network_create( | |
778 | name, uris[0], uris[1], | |
779 | live_timer_us); | |
780 | break; | |
781 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
782 | ret = -1; | |
783 | goto end; | |
784 | default: | |
785 | /* Already checked. */ | |
786 | abort(); | |
787 | } | |
788 | *descriptor = live ? &live->base : NULL; | |
789 | break; | |
790 | } | |
791 | default: | |
792 | /* Already checked. */ | |
793 | abort(); | |
794 | } | |
795 | memset(uris, 0, sizeof(uris)); | |
796 | if (!*descriptor) { | |
797 | ret = -1; | |
798 | goto end; | |
799 | } | |
800 | ||
801 | ret = offset; | |
802 | end: | |
803 | free(uris[0]); | |
804 | free(uris[1]); | |
805 | return ret; | |
806 | } | |
807 | ||
b178f53e JG |
808 | int lttng_session_descriptor_serialize( |
809 | const struct lttng_session_descriptor *descriptor, | |
810 | struct lttng_dynamic_buffer *buffer) | |
811 | { | |
812 | int ret, i; | |
813 | /* There are, at most, two URIs to serialize. */ | |
814 | struct lttng_uri *uris[2] = {}; | |
815 | size_t uri_count = 0; | |
816 | /* The live header is a superset of all headers. */ | |
817 | struct lttng_session_descriptor_live_comm header = { | |
a6bc4ca9 SM |
818 | .base = { |
819 | .type = (uint8_t) descriptor->type, | |
820 | .output_type = (uint8_t) descriptor->output_type, | |
821 | .name_len = (uint32_t) (descriptor->name ? | |
822 | strlen(descriptor->name) + 1 : 0), | |
1c9a0b0e MJ |
823 | .uri_count = 0, |
824 | }, | |
825 | .live_timer_us = 0, | |
826 | ||
b178f53e JG |
827 | }; |
828 | const void *header_ptr = NULL; | |
829 | size_t header_size; | |
830 | ||
831 | switch (descriptor->output_type) { | |
832 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
833 | break; | |
834 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
835 | uris[0] = descriptor->output.local; | |
836 | break; | |
837 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
838 | uris[0] = descriptor->output.network.control; | |
839 | uris[1] = descriptor->output.network.data; | |
840 | break; | |
841 | default: | |
842 | ret = -1; | |
843 | goto end; | |
844 | } | |
845 | uri_count += !!uris[0]; | |
846 | uri_count += !!uris[1]; | |
847 | ||
848 | header.base.uri_count = uri_count; | |
849 | if (descriptor->type == LTTNG_SESSION_DESCRIPTOR_TYPE_LIVE) { | |
850 | const struct lttng_session_descriptor_live *live = | |
851 | container_of(descriptor, typeof(*live), | |
852 | base); | |
853 | ||
854 | header.live_timer_us = live->live_timer_us; | |
855 | header_ptr = &header; | |
856 | header_size = sizeof(header); | |
857 | } else { | |
858 | header_ptr = &header.base; | |
859 | header_size = sizeof(header.base); | |
860 | } | |
861 | ||
862 | ret = lttng_dynamic_buffer_append(buffer, header_ptr, header_size); | |
863 | if (ret) { | |
864 | goto end; | |
865 | } | |
866 | if (header.base.name_len) { | |
867 | ret = lttng_dynamic_buffer_append(buffer, descriptor->name, | |
868 | header.base.name_len); | |
869 | if (ret) { | |
870 | goto end; | |
871 | } | |
872 | } | |
873 | ||
874 | for (i = 0; i < uri_count; i++) { | |
875 | ret = lttng_dynamic_buffer_append(buffer, uris[i], | |
876 | sizeof(struct lttng_uri)); | |
877 | if (ret) { | |
878 | goto end; | |
879 | } | |
880 | } | |
881 | end: | |
882 | return ret; | |
883 | } | |
884 | ||
b178f53e JG |
885 | enum lttng_session_descriptor_type |
886 | lttng_session_descriptor_get_type( | |
887 | const struct lttng_session_descriptor *descriptor) | |
888 | { | |
889 | return descriptor->type; | |
890 | } | |
891 | ||
b178f53e JG |
892 | enum lttng_session_descriptor_output_type |
893 | lttng_session_descriptor_get_output_type( | |
894 | const struct lttng_session_descriptor *descriptor) | |
895 | { | |
896 | return descriptor->output_type; | |
897 | } | |
898 | ||
b178f53e JG |
899 | void lttng_session_descriptor_get_local_output_uri( |
900 | const struct lttng_session_descriptor *descriptor, | |
901 | struct lttng_uri *local_uri) | |
902 | { | |
903 | memcpy(local_uri, descriptor->output.local, sizeof(*local_uri)); | |
904 | } | |
905 | ||
b178f53e JG |
906 | void lttng_session_descriptor_get_network_output_uris( |
907 | const struct lttng_session_descriptor *descriptor, | |
908 | struct lttng_uri *control, | |
909 | struct lttng_uri *data) | |
910 | { | |
911 | memcpy(control, descriptor->output.network.control, sizeof(*control)); | |
912 | memcpy(data, descriptor->output.network.data, sizeof(*data)); | |
913 | } | |
914 | ||
b178f53e JG |
915 | unsigned long long |
916 | lttng_session_descriptor_live_get_timer_interval( | |
917 | const struct lttng_session_descriptor *descriptor) | |
918 | { | |
919 | struct lttng_session_descriptor_live *live; | |
920 | ||
921 | live = container_of(descriptor, typeof(*live), base); | |
922 | return live->live_timer_us; | |
923 | } | |
924 | ||
925 | enum lttng_session_descriptor_status | |
926 | lttng_session_descriptor_get_session_name( | |
927 | const struct lttng_session_descriptor *descriptor, | |
928 | const char **session_name) | |
929 | { | |
930 | enum lttng_session_descriptor_status status; | |
931 | ||
932 | if (!descriptor || !session_name) { | |
933 | status = LTTNG_SESSION_DESCRIPTOR_STATUS_INVALID; | |
934 | goto end; | |
935 | } | |
936 | ||
937 | *session_name = descriptor->name; | |
938 | status = descriptor->name ? | |
939 | LTTNG_SESSION_DESCRIPTOR_STATUS_OK : | |
940 | LTTNG_SESSION_DESCRIPTOR_STATUS_UNSET; | |
941 | end: | |
942 | return status; | |
943 | } | |
944 | ||
b178f53e JG |
945 | int lttng_session_descriptor_set_session_name( |
946 | struct lttng_session_descriptor *descriptor, | |
947 | const char *name) | |
948 | { | |
949 | int ret = 0; | |
950 | char *new_name; | |
951 | ||
952 | if (!name) { | |
953 | goto end; | |
954 | } | |
955 | if (strlen(name) >= LTTNG_NAME_MAX) { | |
956 | ret = -1; | |
957 | goto end; | |
958 | } | |
959 | new_name = strdup(name); | |
960 | if (!new_name) { | |
961 | ret = -1; | |
962 | goto end; | |
963 | } | |
964 | free(descriptor->name); | |
965 | descriptor->name = new_name; | |
966 | end: | |
967 | return ret; | |
968 | } | |
969 | ||
b178f53e JG |
970 | bool lttng_session_descriptor_is_output_destination_initialized( |
971 | const struct lttng_session_descriptor *descriptor) | |
972 | { | |
973 | switch (descriptor->output_type) { | |
974 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
975 | return true; | |
976 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
977 | return descriptor->output.local; | |
978 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
979 | return descriptor->output.network.control; | |
980 | default: | |
981 | abort(); | |
982 | } | |
983 | } | |
984 | ||
b178f53e JG |
985 | bool lttng_session_descriptor_has_output_directory( |
986 | const struct lttng_session_descriptor *descriptor) | |
987 | { | |
988 | switch (descriptor->output_type) { | |
989 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
990 | break; | |
991 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
992 | if (descriptor->output.local) { | |
993 | return *descriptor->output.local->dst.path; | |
994 | } | |
995 | break; | |
996 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
997 | if (descriptor->output.network.control) { | |
998 | return *descriptor->output.network.control->subdir; | |
999 | } | |
1000 | break; | |
1001 | default: | |
1002 | abort(); | |
1003 | } | |
1004 | return false; | |
1005 | } | |
1006 | ||
b178f53e JG |
1007 | enum lttng_error_code lttng_session_descriptor_set_default_output( |
1008 | struct lttng_session_descriptor *descriptor, | |
1009 | time_t *session_creation_time, | |
1010 | const char *absolute_home_path) | |
1011 | { | |
1012 | enum lttng_error_code ret_code = LTTNG_OK; | |
1013 | struct lttng_uri *uris = NULL; | |
1014 | ||
1015 | switch (descriptor->output_type) { | |
1016 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
1017 | goto end; | |
1018 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
1019 | { | |
1020 | int ret; | |
1021 | ssize_t uri_ret; | |
1022 | char local_uri[LTTNG_PATH_MAX]; | |
1023 | char creation_datetime_suffix[17] = {}; | |
1024 | ||
1025 | if (session_creation_time) { | |
1026 | size_t strftime_ret; | |
1027 | struct tm *timeinfo; | |
1028 | ||
1029 | timeinfo = localtime(session_creation_time); | |
1030 | if (!timeinfo) { | |
1031 | ret_code = LTTNG_ERR_FATAL; | |
1032 | goto end; | |
1033 | } | |
1034 | strftime_ret = strftime(creation_datetime_suffix, | |
1035 | sizeof(creation_datetime_suffix), | |
1036 | "-%Y%m%d-%H%M%S", timeinfo); | |
1037 | if (strftime_ret == 0) { | |
1038 | ERR("Failed to format session creation timestamp while setting default local output destination"); | |
1039 | ret_code = LTTNG_ERR_FATAL; | |
1040 | goto end; | |
1041 | } | |
1042 | } | |
a0377dfe | 1043 | LTTNG_ASSERT(descriptor->name); |
b178f53e JG |
1044 | ret = snprintf(local_uri, sizeof(local_uri), |
1045 | "file://%s/%s/%s%s", | |
1046 | absolute_home_path, | |
1047 | DEFAULT_TRACE_DIR_NAME, descriptor->name, | |
1048 | creation_datetime_suffix); | |
1049 | if (ret >= sizeof(local_uri)) { | |
1050 | ERR("Truncation occurred while setting default local output destination"); | |
1051 | ret_code = LTTNG_ERR_SET_URL; | |
1052 | goto end; | |
1053 | } else if (ret < 0) { | |
1054 | PERROR("Failed to format default local output URI"); | |
1055 | ret_code = LTTNG_ERR_SET_URL; | |
1056 | goto end; | |
1057 | } | |
1058 | ||
1059 | uri_ret = uri_parse(local_uri, &uris); | |
1060 | if (uri_ret != 1) { | |
1061 | ret_code = LTTNG_ERR_SET_URL; | |
1062 | goto end; | |
1063 | } | |
1064 | free(descriptor->output.local); | |
1065 | descriptor->output.local = &uris[0]; | |
1066 | uris = NULL; | |
1067 | break; | |
1068 | } | |
1069 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
1070 | { | |
1071 | int ret; | |
1072 | ssize_t uri_ret; | |
1073 | struct lttng_uri *control = NULL, *data = NULL; | |
1074 | ||
1075 | uri_ret = uri_parse_str_urls("net://127.0.0.1", NULL, &uris); | |
1076 | if (uri_ret != 2) { | |
1077 | ret_code = LTTNG_ERR_SET_URL; | |
1078 | goto end; | |
1079 | } | |
1080 | ||
1081 | control = uri_copy(&uris[0]); | |
1082 | data = uri_copy(&uris[1]); | |
1083 | if (!control || !data) { | |
1084 | free(control); | |
1085 | free(data); | |
1086 | ret_code = LTTNG_ERR_SET_URL; | |
1087 | goto end; | |
1088 | } | |
1089 | ||
1090 | /* Ownership of uris is transferred. */ | |
1091 | ret = network_location_set_from_lttng_uris( | |
1092 | &descriptor->output.network, | |
1093 | control, data); | |
1094 | if (ret) { | |
1095 | abort(); | |
1096 | ret_code = LTTNG_ERR_SET_URL; | |
1097 | goto end; | |
1098 | } | |
1099 | break; | |
1100 | } | |
1101 | default: | |
1102 | abort(); | |
1103 | } | |
1104 | end: | |
1105 | free(uris); | |
1106 | return ret_code; | |
1107 | } | |
1108 | ||
1109 | /* | |
1110 | * Note that only properties that can be populated by the session daemon | |
1111 | * (output destination and name) are assigned. | |
1112 | */ | |
b178f53e JG |
1113 | int lttng_session_descriptor_assign( |
1114 | struct lttng_session_descriptor *dst, | |
1115 | const struct lttng_session_descriptor *src) | |
1116 | { | |
1117 | int ret = 0; | |
1118 | ||
1119 | if (dst->type != src->type) { | |
1120 | ret = -1; | |
1121 | goto end; | |
1122 | } | |
1123 | if (dst->output_type != src->output_type) { | |
1124 | ret = -1; | |
1125 | goto end; | |
1126 | } | |
1127 | ret = lttng_session_descriptor_set_session_name(dst, src->name); | |
1128 | if (ret) { | |
1129 | goto end; | |
1130 | } | |
1131 | switch (dst->output_type) { | |
1132 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
1133 | free(dst->output.local); | |
1134 | dst->output.local = uri_copy(src->output.local); | |
1135 | if (!dst->output.local) { | |
1136 | ret = -1; | |
1137 | goto end; | |
1138 | } | |
1139 | break; | |
1140 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
1141 | { | |
1142 | struct lttng_uri *control_copy = NULL, *data_copy = NULL; | |
1143 | ||
1144 | control_copy = uri_copy(dst->output.network.control); | |
1145 | if (!control_copy && dst->output.network.control) { | |
1146 | ret = -1; | |
1147 | goto end; | |
1148 | } | |
1149 | data_copy = uri_copy(dst->output.network.data); | |
1150 | if (!data_copy && dst->output.network.data) { | |
1151 | free(control_copy); | |
1152 | ret = -1; | |
1153 | goto end; | |
1154 | } | |
1155 | ret = network_location_set_from_lttng_uris(&dst->output.network, | |
1156 | control_copy, data_copy); | |
1157 | break; | |
1158 | } | |
1159 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
1160 | goto end; | |
1161 | } | |
1162 | end: | |
1163 | return ret; | |
1164 | } |