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