Commit | Line | Data |
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b178f53e | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2019 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
b178f53e | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-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> | |
13 | #include <assert.h> | |
14 | #include <stdio.h> | |
15 | ||
16 | struct lttng_session_descriptor_network_location { | |
17 | struct lttng_uri *control; | |
18 | struct lttng_uri *data; | |
19 | }; | |
20 | ||
21 | struct lttng_session_descriptor { | |
22 | enum lttng_session_descriptor_type type; | |
23 | /* | |
24 | * If an output type that is not OUTPUT_TYPE_NONE is specified, | |
25 | * it means that an output of that type must be generated at | |
26 | * session-creation time. | |
27 | */ | |
28 | enum lttng_session_descriptor_output_type output_type; | |
29 | char *name; | |
30 | union { | |
31 | struct lttng_session_descriptor_network_location network; | |
32 | struct lttng_uri *local; | |
33 | } output; | |
34 | }; | |
35 | ||
36 | struct lttng_session_descriptor_snapshot { | |
37 | struct lttng_session_descriptor base; | |
38 | /* | |
39 | * Assumes at-most one snapshot output is supported. Uses | |
40 | * the output field of the base class. | |
41 | */ | |
42 | }; | |
43 | ||
44 | struct lttng_session_descriptor_live { | |
45 | struct lttng_session_descriptor base; | |
46 | unsigned long long live_timer_us; | |
47 | }; | |
48 | ||
49 | struct lttng_session_descriptor_comm { | |
50 | /* enum lttng_session_descriptor_type */ | |
51 | uint8_t type; | |
52 | /* enum lttng_session_descriptor_output_type */ | |
53 | uint8_t output_type; | |
54 | /* Includes trailing null. */ | |
55 | uint32_t name_len; | |
56 | /* Name follows, followed by URIs */ | |
57 | uint8_t uri_count; | |
58 | } LTTNG_PACKED; | |
59 | ||
60 | struct lttng_session_descriptor_live_comm { | |
61 | struct lttng_session_descriptor_comm base; | |
62 | /* Live-specific parameters. */ | |
63 | uint64_t live_timer_us; | |
64 | } LTTNG_PACKED; | |
65 | ||
66 | static | |
67 | struct lttng_uri *uri_copy(const struct lttng_uri *uri) | |
68 | { | |
69 | struct lttng_uri *new_uri = NULL; | |
70 | ||
71 | if (!uri) { | |
72 | goto end; | |
73 | } | |
74 | ||
75 | new_uri = zmalloc(sizeof(*new_uri)); | |
76 | if (!new_uri) { | |
77 | goto end; | |
78 | } | |
79 | memcpy(new_uri, uri, sizeof(*new_uri)); | |
80 | end: | |
81 | return new_uri; | |
82 | } | |
83 | ||
84 | static | |
85 | struct lttng_uri *uri_from_path(const char *path) | |
86 | { | |
87 | struct lttng_uri *uris = NULL; | |
88 | ssize_t uri_count; | |
89 | char local_protocol_string[LTTNG_PATH_MAX + sizeof("file://")] = | |
90 | "file://"; | |
91 | ||
92 | if (strlen(path) >= LTTNG_PATH_MAX) { | |
93 | goto end; | |
94 | } | |
95 | ||
96 | if (path[0] != '/') { | |
97 | /* Not an absolute path. */ | |
98 | goto end; | |
99 | } | |
100 | ||
101 | strncat(local_protocol_string, path, LTTNG_PATH_MAX); | |
102 | uri_count = uri_parse(local_protocol_string, &uris); | |
103 | if (uri_count != 1) { | |
104 | goto error; | |
105 | } | |
106 | if (uris[0].dtype != LTTNG_DST_PATH) { | |
107 | goto error; | |
108 | } | |
109 | ||
110 | end: | |
111 | return uris; | |
112 | error: | |
113 | free(uris); | |
114 | return NULL; | |
115 | } | |
116 | ||
117 | static | |
118 | void network_location_fini( | |
119 | struct lttng_session_descriptor_network_location *location) | |
120 | { | |
121 | free(location->control); | |
122 | free(location->data); | |
123 | } | |
124 | ||
125 | /* Assumes ownership of control and data. */ | |
126 | static | |
127 | int network_location_set_from_lttng_uris( | |
128 | struct lttng_session_descriptor_network_location *location, | |
129 | struct lttng_uri *control, struct lttng_uri *data) | |
130 | { | |
131 | int ret = 0; | |
132 | ||
133 | if (!control && !data) { | |
134 | goto end; | |
135 | } | |
136 | ||
137 | if (!(control && data)) { | |
138 | /* None or both must be set. */ | |
139 | ret = -1; | |
140 | goto end; | |
141 | } | |
142 | ||
143 | if (control->stype != LTTNG_STREAM_CONTROL || | |
144 | data->stype != LTTNG_STREAM_DATA) { | |
145 | ret = -1; | |
146 | goto end; | |
147 | } | |
148 | ||
149 | free(location->control); | |
150 | free(location->data); | |
151 | location->control = control; | |
152 | location->data = data; | |
153 | control = NULL; | |
154 | data = NULL; | |
155 | end: | |
156 | free(control); | |
157 | free(data); | |
158 | return ret; | |
159 | } | |
160 | ||
161 | static | |
162 | int network_location_set_from_uri_strings( | |
163 | struct lttng_session_descriptor_network_location *location, | |
164 | const char *control, const char *data) | |
165 | { | |
166 | int ret = 0; | |
167 | ssize_t uri_count; | |
168 | struct lttng_uri *parsed_uris = NULL; | |
169 | struct lttng_uri *control_uri = NULL; | |
170 | struct lttng_uri *data_uri = NULL; | |
171 | ||
172 | uri_count = uri_parse_str_urls(control, data, &parsed_uris); | |
173 | if (uri_count != 2 && uri_count != 0) { | |
174 | ret = -1; | |
175 | goto end; | |
176 | } | |
177 | ||
178 | /* | |
179 | * uri_parse_str_urls returns a contiguous array of lttng_uris whereas | |
180 | * session descriptors expect individually allocated lttng_uris. | |
181 | */ | |
182 | if (uri_count == 2) { | |
183 | control_uri = zmalloc(sizeof(*control_uri)); | |
184 | data_uri = zmalloc(sizeof(*data_uri)); | |
185 | if (!control_uri || !data_uri) { | |
186 | ret = -1; | |
187 | goto end; | |
188 | } | |
189 | memcpy(control_uri, &parsed_uris[0], sizeof(*control_uri)); | |
190 | memcpy(data_uri, &parsed_uris[1], sizeof(*data_uri)); | |
191 | } | |
192 | ||
193 | /* Ownership of control and data uris is transferred. */ | |
194 | ret = network_location_set_from_lttng_uris( | |
195 | location, | |
196 | control_uri, | |
197 | data_uri); | |
198 | control_uri = NULL; | |
199 | data_uri = NULL; | |
200 | end: | |
201 | free(parsed_uris); | |
202 | free(control_uri); | |
203 | free(data_uri); | |
204 | return ret; | |
205 | } | |
206 | ||
207 | struct lttng_session_descriptor * | |
208 | lttng_session_descriptor_create(const char *name) | |
209 | { | |
210 | struct lttng_session_descriptor *descriptor; | |
211 | ||
212 | descriptor = zmalloc(sizeof(*descriptor)); | |
213 | if (!descriptor) { | |
214 | goto error; | |
215 | } | |
216 | ||
217 | descriptor->type = LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR; | |
218 | descriptor->output_type = | |
219 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE; | |
220 | if (lttng_session_descriptor_set_session_name(descriptor, name)) { | |
221 | goto error; | |
222 | } | |
223 | return descriptor; | |
224 | error: | |
225 | lttng_session_descriptor_destroy(descriptor); | |
226 | return NULL; | |
227 | } | |
228 | ||
229 | /* Ownership of uri is transferred. */ | |
230 | static | |
231 | struct lttng_session_descriptor * | |
232 | _lttng_session_descriptor_local_create(const char *name, | |
233 | struct lttng_uri *uri) | |
234 | { | |
235 | struct lttng_session_descriptor *descriptor; | |
236 | ||
237 | descriptor = lttng_session_descriptor_create(name); | |
238 | if (!descriptor) { | |
239 | goto error; | |
240 | } | |
241 | descriptor->type = LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR; | |
242 | descriptor->output_type = | |
243 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL; | |
244 | if (uri) { | |
245 | if (uri->dtype != LTTNG_DST_PATH) { | |
246 | goto error; | |
247 | } | |
248 | descriptor->output.local = uri; | |
249 | uri = NULL; | |
250 | } | |
251 | return descriptor; | |
252 | error: | |
253 | free(uri); | |
254 | lttng_session_descriptor_destroy(descriptor); | |
255 | return NULL; | |
256 | } | |
257 | ||
258 | struct lttng_session_descriptor * | |
259 | lttng_session_descriptor_local_create(const char *name, const char *path) | |
260 | { | |
261 | struct lttng_uri *uri = NULL; | |
262 | struct lttng_session_descriptor *descriptor; | |
263 | ||
264 | if (path) { | |
265 | uri = uri_from_path(path); | |
266 | if (!uri) { | |
267 | goto error; | |
268 | } | |
269 | } | |
270 | descriptor = _lttng_session_descriptor_local_create(name, uri); | |
271 | return descriptor; | |
272 | error: | |
273 | return NULL; | |
274 | } | |
275 | ||
276 | /* Assumes the ownership of both uris. */ | |
277 | static | |
278 | struct lttng_session_descriptor * | |
279 | _lttng_session_descriptor_network_create(const char *name, | |
280 | struct lttng_uri *control, struct lttng_uri *data) | |
281 | { | |
282 | int ret; | |
283 | struct lttng_session_descriptor *descriptor; | |
284 | ||
285 | descriptor = lttng_session_descriptor_create(name); | |
286 | if (!descriptor) { | |
287 | goto error; | |
288 | } | |
289 | ||
290 | descriptor->type = LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR; | |
291 | descriptor->output_type = LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK; | |
292 | /* Assumes the ownership of both uris. */ | |
293 | ret = network_location_set_from_lttng_uris(&descriptor->output.network, | |
294 | control, data); | |
295 | control = NULL; | |
296 | data = NULL; | |
297 | if (ret) { | |
298 | goto error; | |
299 | } | |
300 | return descriptor; | |
301 | error: | |
302 | lttng_session_descriptor_destroy(descriptor); | |
303 | free(control); | |
304 | free(data); | |
305 | return NULL; | |
306 | } | |
307 | ||
308 | struct lttng_session_descriptor * | |
309 | lttng_session_descriptor_network_create(const char *name, | |
310 | const char *control_url, const char *data_url) | |
311 | { | |
312 | int ret; | |
313 | struct lttng_session_descriptor *descriptor; | |
314 | ||
315 | descriptor = _lttng_session_descriptor_network_create(name, | |
316 | NULL, NULL); | |
317 | if (!descriptor) { | |
318 | goto error; | |
319 | } | |
320 | ||
321 | ret = network_location_set_from_uri_strings(&descriptor->output.network, | |
322 | control_url, data_url); | |
323 | if (ret) { | |
324 | goto error; | |
325 | } | |
326 | return descriptor; | |
327 | error: | |
328 | lttng_session_descriptor_destroy(descriptor); | |
329 | return NULL; | |
330 | } | |
331 | ||
332 | static | |
333 | struct lttng_session_descriptor_snapshot * | |
334 | _lttng_session_descriptor_snapshot_create(const char *name) | |
335 | { | |
336 | struct lttng_session_descriptor_snapshot *descriptor; | |
337 | ||
338 | descriptor = zmalloc(sizeof(*descriptor)); | |
339 | if (!descriptor) { | |
340 | goto error; | |
341 | } | |
342 | ||
343 | descriptor->base.type = LTTNG_SESSION_DESCRIPTOR_TYPE_SNAPSHOT; | |
344 | descriptor->base.output_type = | |
345 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE; | |
346 | if (lttng_session_descriptor_set_session_name(&descriptor->base, | |
347 | name)) { | |
348 | goto error; | |
349 | } | |
350 | return descriptor; | |
351 | error: | |
352 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
353 | return NULL; | |
354 | } | |
355 | ||
356 | /* Ownership of control and data is transferred. */ | |
357 | static | |
358 | struct lttng_session_descriptor_snapshot * | |
359 | _lttng_session_descriptor_snapshot_network_create(const char *name, | |
360 | struct lttng_uri *control, struct lttng_uri *data) | |
361 | { | |
362 | int ret; | |
363 | struct lttng_session_descriptor_snapshot *descriptor; | |
364 | ||
365 | descriptor = _lttng_session_descriptor_snapshot_create(name); | |
366 | if (!descriptor) { | |
367 | goto error; | |
368 | } | |
369 | ||
370 | descriptor->base.output_type = | |
371 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK; | |
372 | /* Ownership of control and data is transferred. */ | |
373 | ret = network_location_set_from_lttng_uris( | |
374 | &descriptor->base.output.network, | |
375 | control, data); | |
376 | control = NULL; | |
377 | data = NULL; | |
378 | if (ret) { | |
379 | goto error; | |
380 | } | |
381 | return descriptor; | |
382 | error: | |
383 | free(control); | |
384 | free(data); | |
385 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
386 | return NULL; | |
387 | } | |
388 | ||
389 | struct lttng_session_descriptor * | |
390 | lttng_session_descriptor_snapshot_create(const char *name) | |
391 | { | |
392 | struct lttng_session_descriptor_snapshot *descriptor; | |
393 | ||
394 | descriptor = _lttng_session_descriptor_snapshot_create(name); | |
395 | return descriptor ? &descriptor->base : NULL; | |
396 | } | |
397 | ||
398 | struct lttng_session_descriptor * | |
399 | lttng_session_descriptor_snapshot_network_create(const char *name, | |
400 | const char *control_url, const char *data_url) | |
401 | { | |
402 | int ret; | |
403 | struct lttng_session_descriptor_snapshot *descriptor; | |
404 | ||
405 | descriptor = _lttng_session_descriptor_snapshot_network_create(name, | |
406 | NULL, NULL); | |
407 | if (!descriptor) { | |
408 | goto error; | |
409 | } | |
410 | ||
411 | ret = network_location_set_from_uri_strings( | |
412 | &descriptor->base.output.network, | |
413 | control_url, data_url); | |
414 | if (ret) { | |
415 | goto error; | |
416 | } | |
417 | return &descriptor->base; | |
418 | error: | |
419 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
420 | return NULL; | |
421 | } | |
422 | ||
423 | /* Ownership of uri is transferred. */ | |
424 | static | |
425 | struct lttng_session_descriptor_snapshot * | |
426 | _lttng_session_descriptor_snapshot_local_create(const char *name, | |
427 | struct lttng_uri *uri) | |
428 | { | |
429 | struct lttng_session_descriptor_snapshot *descriptor; | |
430 | ||
431 | descriptor = _lttng_session_descriptor_snapshot_create(name); | |
432 | if (!descriptor) { | |
433 | goto error; | |
434 | } | |
435 | descriptor->base.output_type = | |
436 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL; | |
437 | if (uri) { | |
438 | if (uri->dtype != LTTNG_DST_PATH) { | |
439 | goto error; | |
440 | } | |
441 | descriptor->base.output.local = uri; | |
442 | uri = NULL; | |
443 | } | |
444 | return descriptor; | |
445 | error: | |
446 | free(uri); | |
447 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
448 | return NULL; | |
449 | } | |
450 | ||
451 | struct lttng_session_descriptor * | |
452 | lttng_session_descriptor_snapshot_local_create(const char *name, | |
453 | const char *path) | |
454 | { | |
455 | struct lttng_uri *path_uri = NULL; | |
456 | struct lttng_session_descriptor_snapshot *descriptor; | |
457 | ||
458 | if (path) { | |
459 | path_uri = uri_from_path(path); | |
460 | if (!path_uri) { | |
461 | goto error; | |
462 | } | |
463 | } | |
464 | descriptor = _lttng_session_descriptor_snapshot_local_create(name, | |
465 | path_uri); | |
466 | return descriptor ? &descriptor->base : NULL; | |
467 | error: | |
468 | return NULL; | |
469 | } | |
470 | ||
471 | static | |
472 | struct lttng_session_descriptor_live * | |
473 | _lttng_session_descriptor_live_create(const char *name, | |
474 | unsigned long long live_timer_interval_us) | |
475 | { | |
476 | struct lttng_session_descriptor_live *descriptor = NULL; | |
477 | ||
478 | if (live_timer_interval_us == 0) { | |
479 | goto error; | |
480 | } | |
481 | descriptor = zmalloc(sizeof(*descriptor)); | |
482 | if (!descriptor) { | |
483 | goto error; | |
484 | } | |
485 | ||
486 | descriptor->base.type = LTTNG_SESSION_DESCRIPTOR_TYPE_LIVE; | |
487 | descriptor->base.output_type = | |
488 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE; | |
489 | descriptor->live_timer_us = live_timer_interval_us; | |
490 | if (lttng_session_descriptor_set_session_name(&descriptor->base, | |
491 | name)) { | |
492 | goto error; | |
493 | } | |
494 | ||
495 | return descriptor; | |
496 | error: | |
497 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
498 | return NULL; | |
499 | } | |
500 | ||
501 | /* Ownership of control and data is transferred. */ | |
502 | static | |
503 | struct lttng_session_descriptor_live * | |
504 | _lttng_session_descriptor_live_network_create( | |
505 | const char *name, | |
506 | struct lttng_uri *control, struct lttng_uri *data, | |
507 | unsigned long long live_timer_interval_us) | |
508 | { | |
509 | int ret; | |
510 | struct lttng_session_descriptor_live *descriptor; | |
511 | ||
512 | descriptor = _lttng_session_descriptor_live_create(name, | |
513 | live_timer_interval_us); | |
ca258a7d FD |
514 | if (!descriptor) { |
515 | goto error; | |
516 | } | |
517 | ||
b178f53e JG |
518 | descriptor->base.output_type = |
519 | LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK; | |
520 | ||
521 | /* Ownerwhip of control and data is transferred. */ | |
522 | ret = network_location_set_from_lttng_uris( | |
523 | &descriptor->base.output.network, | |
524 | control, data); | |
525 | control = NULL; | |
526 | data = NULL; | |
527 | if (ret) { | |
528 | goto error; | |
529 | } | |
530 | return descriptor; | |
531 | error: | |
532 | free(control); | |
533 | free(data); | |
534 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
535 | return NULL; | |
536 | } | |
537 | ||
538 | struct lttng_session_descriptor * | |
539 | lttng_session_descriptor_live_create( | |
540 | const char *name, | |
541 | unsigned long long live_timer_us) | |
542 | { | |
543 | struct lttng_session_descriptor_live *descriptor; | |
544 | ||
545 | descriptor = _lttng_session_descriptor_live_create(name, live_timer_us); | |
b178f53e JG |
546 | |
547 | return descriptor ? &descriptor->base : NULL; | |
b178f53e JG |
548 | } |
549 | ||
550 | struct lttng_session_descriptor * | |
551 | lttng_session_descriptor_live_network_create( | |
552 | const char *name, | |
553 | const char *control_url, const char *data_url, | |
554 | unsigned long long live_timer_us) | |
555 | { | |
556 | int ret; | |
557 | struct lttng_session_descriptor_live *descriptor; | |
558 | ||
559 | descriptor = _lttng_session_descriptor_live_network_create(name, | |
560 | NULL, NULL, live_timer_us); | |
561 | if (!descriptor) { | |
562 | goto error; | |
563 | } | |
564 | ||
565 | ret = network_location_set_from_uri_strings( | |
566 | &descriptor->base.output.network, | |
567 | control_url, data_url); | |
568 | if (ret) { | |
569 | goto error; | |
570 | } | |
571 | return &descriptor->base; | |
572 | error: | |
573 | lttng_session_descriptor_destroy(descriptor ? &descriptor->base : NULL); | |
574 | return NULL; | |
575 | } | |
576 | ||
577 | void lttng_session_descriptor_destroy( | |
578 | struct lttng_session_descriptor *descriptor) | |
579 | { | |
580 | if (!descriptor) { | |
581 | return; | |
582 | } | |
583 | ||
584 | switch (descriptor->output_type) { | |
585 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
586 | break; | |
587 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
588 | free(descriptor->output.local); | |
589 | break; | |
590 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
591 | network_location_fini(&descriptor->output.network); | |
592 | break; | |
593 | default: | |
594 | abort(); | |
595 | } | |
596 | ||
597 | free(descriptor->name); | |
598 | free(descriptor); | |
599 | } | |
600 | ||
601 | LTTNG_HIDDEN | |
602 | ssize_t lttng_session_descriptor_create_from_buffer( | |
603 | const struct lttng_buffer_view *payload, | |
604 | struct lttng_session_descriptor **descriptor) | |
605 | { | |
606 | int i; | |
607 | ssize_t offset = 0, ret; | |
608 | struct lttng_buffer_view current_view; | |
609 | const char *name = NULL; | |
610 | const struct lttng_session_descriptor_comm *base_header; | |
611 | size_t max_expected_uri_count; | |
612 | uint64_t live_timer_us = 0; | |
613 | struct lttng_uri *uris[2] = {}; | |
614 | enum lttng_session_descriptor_type type; | |
615 | enum lttng_session_descriptor_output_type output_type; | |
616 | ||
617 | current_view = lttng_buffer_view_from_view(payload, offset, | |
618 | sizeof(*base_header)); | |
619 | base_header = (typeof(base_header)) current_view.data; | |
620 | if (!base_header) { | |
621 | ret = -1; | |
622 | goto end; | |
623 | } | |
624 | ||
625 | switch (base_header->type) { | |
626 | case LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR: | |
627 | case LTTNG_SESSION_DESCRIPTOR_TYPE_SNAPSHOT: | |
628 | break; | |
629 | case LTTNG_SESSION_DESCRIPTOR_TYPE_LIVE: | |
630 | { | |
631 | const struct lttng_session_descriptor_live_comm *live_header; | |
632 | ||
633 | current_view = lttng_buffer_view_from_view(payload, offset, | |
634 | sizeof(*live_header)); | |
635 | live_header = (typeof(live_header)) current_view.data; | |
636 | if (!live_header) { | |
637 | ret = -1; | |
638 | goto end; | |
639 | } | |
640 | ||
641 | live_timer_us = live_header->live_timer_us; | |
642 | break; | |
643 | } | |
644 | default: | |
645 | ret = -1; | |
646 | goto end; | |
647 | } | |
648 | /* type has been validated. */ | |
649 | type = base_header->type; | |
650 | ||
651 | switch (base_header->output_type) { | |
652 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
653 | max_expected_uri_count = 0; | |
654 | break; | |
655 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
656 | max_expected_uri_count = 1; | |
657 | break; | |
658 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
659 | max_expected_uri_count = 2; | |
660 | break; | |
661 | default: | |
662 | ret = -1; | |
663 | goto end; | |
664 | } | |
665 | /* output_type has been validated. */ | |
666 | output_type = base_header->output_type; | |
667 | ||
668 | /* Skip after header. */ | |
669 | offset += current_view.size; | |
670 | if (!base_header->name_len) { | |
671 | goto skip_name; | |
672 | } | |
673 | ||
674 | /* Map the name. */ | |
675 | current_view = lttng_buffer_view_from_view(payload, offset, | |
676 | base_header->name_len); | |
677 | name = current_view.data; | |
678 | if (!name) { | |
679 | ret = -1; | |
680 | goto end; | |
681 | } | |
682 | ||
683 | if (base_header->name_len == 1 || | |
684 | name[base_header->name_len - 1] || | |
685 | strlen(name) != base_header->name_len - 1) { | |
686 | /* | |
687 | * Check that the name is not NULL, is NULL-terminated, and | |
688 | * does not contain a NULL before the last byte. | |
689 | */ | |
690 | ret = -1; | |
691 | goto end; | |
692 | } | |
693 | ||
694 | /* Skip after the name. */ | |
695 | offset += base_header->name_len; | |
696 | skip_name: | |
697 | if (base_header->uri_count > max_expected_uri_count) { | |
698 | ret = -1; | |
699 | goto end; | |
700 | } | |
701 | ||
702 | for (i = 0; i < base_header->uri_count; i++) { | |
703 | struct lttng_uri *uri; | |
704 | ||
705 | /* Map a URI. */ | |
706 | current_view = lttng_buffer_view_from_view(payload, | |
707 | offset, sizeof(*uri)); | |
708 | uri = (typeof(uri)) current_view.data; | |
709 | if (!uri) { | |
710 | ret = -1; | |
711 | goto end; | |
712 | } | |
713 | uris[i] = zmalloc(sizeof(*uri)); | |
714 | if (!uris[i]) { | |
715 | ret = -1; | |
716 | goto end; | |
717 | } | |
718 | memcpy(uris[i], uri, sizeof(*uri)); | |
719 | offset += sizeof(*uri); | |
720 | } | |
721 | ||
722 | switch (type) { | |
723 | case LTTNG_SESSION_DESCRIPTOR_TYPE_REGULAR: | |
724 | switch (output_type) { | |
725 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
726 | *descriptor = lttng_session_descriptor_create(name); | |
727 | break; | |
728 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
729 | *descriptor = _lttng_session_descriptor_local_create( | |
730 | name, uris[0]); | |
731 | break; | |
732 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
733 | *descriptor = _lttng_session_descriptor_network_create( | |
734 | name, uris[0], uris[1]); | |
735 | break; | |
736 | default: | |
737 | /* Already checked. */ | |
738 | abort(); | |
739 | } | |
740 | break; | |
741 | case LTTNG_SESSION_DESCRIPTOR_TYPE_SNAPSHOT: | |
742 | { | |
743 | struct lttng_session_descriptor_snapshot *snapshot; | |
744 | switch (output_type) { | |
745 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
746 | snapshot = _lttng_session_descriptor_snapshot_create( | |
747 | name); | |
748 | break; | |
749 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
750 | snapshot = _lttng_session_descriptor_snapshot_local_create( | |
751 | name, uris[0]); | |
752 | break; | |
753 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
754 | snapshot = _lttng_session_descriptor_snapshot_network_create( | |
755 | name, uris[0], uris[1]); | |
756 | break; | |
757 | default: | |
758 | /* Already checked. */ | |
759 | abort(); | |
760 | } | |
761 | *descriptor = snapshot ? &snapshot->base : NULL; | |
762 | break; | |
763 | } | |
764 | case LTTNG_SESSION_DESCRIPTOR_TYPE_LIVE: | |
765 | { | |
766 | struct lttng_session_descriptor_live *live; | |
767 | ||
768 | switch (output_type) { | |
769 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
770 | live = _lttng_session_descriptor_live_create( | |
771 | name, live_timer_us); | |
772 | break; | |
773 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
774 | live = _lttng_session_descriptor_live_network_create( | |
775 | name, uris[0], uris[1], | |
776 | live_timer_us); | |
777 | break; | |
778 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
779 | ret = -1; | |
780 | goto end; | |
781 | default: | |
782 | /* Already checked. */ | |
783 | abort(); | |
784 | } | |
785 | *descriptor = live ? &live->base : NULL; | |
786 | break; | |
787 | } | |
788 | default: | |
789 | /* Already checked. */ | |
790 | abort(); | |
791 | } | |
792 | memset(uris, 0, sizeof(uris)); | |
793 | if (!*descriptor) { | |
794 | ret = -1; | |
795 | goto end; | |
796 | } | |
797 | ||
798 | ret = offset; | |
799 | end: | |
800 | free(uris[0]); | |
801 | free(uris[1]); | |
802 | return ret; | |
803 | } | |
804 | ||
805 | LTTNG_HIDDEN | |
806 | int lttng_session_descriptor_serialize( | |
807 | const struct lttng_session_descriptor *descriptor, | |
808 | struct lttng_dynamic_buffer *buffer) | |
809 | { | |
810 | int ret, i; | |
811 | /* There are, at most, two URIs to serialize. */ | |
812 | struct lttng_uri *uris[2] = {}; | |
813 | size_t uri_count = 0; | |
814 | /* The live header is a superset of all headers. */ | |
815 | struct lttng_session_descriptor_live_comm header = { | |
816 | .base.type = (uint8_t) descriptor->type, | |
817 | .base.output_type = (uint8_t) descriptor->output_type, | |
818 | .base.name_len = descriptor->name ? | |
819 | strlen(descriptor->name) + 1 : 0, | |
820 | }; | |
821 | const void *header_ptr = NULL; | |
822 | size_t header_size; | |
823 | ||
824 | switch (descriptor->output_type) { | |
825 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
826 | break; | |
827 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
828 | uris[0] = descriptor->output.local; | |
829 | break; | |
830 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
831 | uris[0] = descriptor->output.network.control; | |
832 | uris[1] = descriptor->output.network.data; | |
833 | break; | |
834 | default: | |
835 | ret = -1; | |
836 | goto end; | |
837 | } | |
838 | uri_count += !!uris[0]; | |
839 | uri_count += !!uris[1]; | |
840 | ||
841 | header.base.uri_count = uri_count; | |
842 | if (descriptor->type == LTTNG_SESSION_DESCRIPTOR_TYPE_LIVE) { | |
843 | const struct lttng_session_descriptor_live *live = | |
844 | container_of(descriptor, typeof(*live), | |
845 | base); | |
846 | ||
847 | header.live_timer_us = live->live_timer_us; | |
848 | header_ptr = &header; | |
849 | header_size = sizeof(header); | |
850 | } else { | |
851 | header_ptr = &header.base; | |
852 | header_size = sizeof(header.base); | |
853 | } | |
854 | ||
855 | ret = lttng_dynamic_buffer_append(buffer, header_ptr, header_size); | |
856 | if (ret) { | |
857 | goto end; | |
858 | } | |
859 | if (header.base.name_len) { | |
860 | ret = lttng_dynamic_buffer_append(buffer, descriptor->name, | |
861 | header.base.name_len); | |
862 | if (ret) { | |
863 | goto end; | |
864 | } | |
865 | } | |
866 | ||
867 | for (i = 0; i < uri_count; i++) { | |
868 | ret = lttng_dynamic_buffer_append(buffer, uris[i], | |
869 | sizeof(struct lttng_uri)); | |
870 | if (ret) { | |
871 | goto end; | |
872 | } | |
873 | } | |
874 | end: | |
875 | return ret; | |
876 | } | |
877 | ||
878 | LTTNG_HIDDEN | |
879 | enum lttng_session_descriptor_type | |
880 | lttng_session_descriptor_get_type( | |
881 | const struct lttng_session_descriptor *descriptor) | |
882 | { | |
883 | return descriptor->type; | |
884 | } | |
885 | ||
886 | LTTNG_HIDDEN | |
887 | enum lttng_session_descriptor_output_type | |
888 | lttng_session_descriptor_get_output_type( | |
889 | const struct lttng_session_descriptor *descriptor) | |
890 | { | |
891 | return descriptor->output_type; | |
892 | } | |
893 | ||
894 | LTTNG_HIDDEN | |
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 | ||
902 | LTTNG_HIDDEN | |
903 | void lttng_session_descriptor_get_network_output_uris( | |
904 | const struct lttng_session_descriptor *descriptor, | |
905 | struct lttng_uri *control, | |
906 | struct lttng_uri *data) | |
907 | { | |
908 | memcpy(control, descriptor->output.network.control, sizeof(*control)); | |
909 | memcpy(data, descriptor->output.network.data, sizeof(*data)); | |
910 | } | |
911 | ||
912 | LTTNG_HIDDEN | |
913 | unsigned long long | |
914 | lttng_session_descriptor_live_get_timer_interval( | |
915 | const struct lttng_session_descriptor *descriptor) | |
916 | { | |
917 | struct lttng_session_descriptor_live *live; | |
918 | ||
919 | live = container_of(descriptor, typeof(*live), base); | |
920 | return live->live_timer_us; | |
921 | } | |
922 | ||
923 | enum lttng_session_descriptor_status | |
924 | lttng_session_descriptor_get_session_name( | |
925 | const struct lttng_session_descriptor *descriptor, | |
926 | const char **session_name) | |
927 | { | |
928 | enum lttng_session_descriptor_status status; | |
929 | ||
930 | if (!descriptor || !session_name) { | |
931 | status = LTTNG_SESSION_DESCRIPTOR_STATUS_INVALID; | |
932 | goto end; | |
933 | } | |
934 | ||
935 | *session_name = descriptor->name; | |
936 | status = descriptor->name ? | |
937 | LTTNG_SESSION_DESCRIPTOR_STATUS_OK : | |
938 | LTTNG_SESSION_DESCRIPTOR_STATUS_UNSET; | |
939 | end: | |
940 | return status; | |
941 | } | |
942 | ||
943 | LTTNG_HIDDEN | |
944 | int lttng_session_descriptor_set_session_name( | |
945 | struct lttng_session_descriptor *descriptor, | |
946 | const char *name) | |
947 | { | |
948 | int ret = 0; | |
949 | char *new_name; | |
950 | ||
951 | if (!name) { | |
952 | goto end; | |
953 | } | |
954 | if (strlen(name) >= LTTNG_NAME_MAX) { | |
955 | ret = -1; | |
956 | goto end; | |
957 | } | |
958 | new_name = strdup(name); | |
959 | if (!new_name) { | |
960 | ret = -1; | |
961 | goto end; | |
962 | } | |
963 | free(descriptor->name); | |
964 | descriptor->name = new_name; | |
965 | end: | |
966 | return ret; | |
967 | } | |
968 | ||
969 | LTTNG_HIDDEN | |
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 | ||
985 | LTTNG_HIDDEN | |
986 | bool lttng_session_descriptor_has_output_directory( | |
987 | const struct lttng_session_descriptor *descriptor) | |
988 | { | |
989 | switch (descriptor->output_type) { | |
990 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
991 | break; | |
992 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
993 | if (descriptor->output.local) { | |
994 | return *descriptor->output.local->dst.path; | |
995 | } | |
996 | break; | |
997 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
998 | if (descriptor->output.network.control) { | |
999 | return *descriptor->output.network.control->subdir; | |
1000 | } | |
1001 | break; | |
1002 | default: | |
1003 | abort(); | |
1004 | } | |
1005 | return false; | |
1006 | } | |
1007 | ||
1008 | LTTNG_HIDDEN | |
1009 | enum lttng_error_code lttng_session_descriptor_set_default_output( | |
1010 | struct lttng_session_descriptor *descriptor, | |
1011 | time_t *session_creation_time, | |
1012 | const char *absolute_home_path) | |
1013 | { | |
1014 | enum lttng_error_code ret_code = LTTNG_OK; | |
1015 | struct lttng_uri *uris = NULL; | |
1016 | ||
1017 | switch (descriptor->output_type) { | |
1018 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
1019 | goto end; | |
1020 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
1021 | { | |
1022 | int ret; | |
1023 | ssize_t uri_ret; | |
1024 | char local_uri[LTTNG_PATH_MAX]; | |
1025 | char creation_datetime_suffix[17] = {}; | |
1026 | ||
1027 | if (session_creation_time) { | |
1028 | size_t strftime_ret; | |
1029 | struct tm *timeinfo; | |
1030 | ||
1031 | timeinfo = localtime(session_creation_time); | |
1032 | if (!timeinfo) { | |
1033 | ret_code = LTTNG_ERR_FATAL; | |
1034 | goto end; | |
1035 | } | |
1036 | strftime_ret = strftime(creation_datetime_suffix, | |
1037 | sizeof(creation_datetime_suffix), | |
1038 | "-%Y%m%d-%H%M%S", timeinfo); | |
1039 | if (strftime_ret == 0) { | |
1040 | ERR("Failed to format session creation timestamp while setting default local output destination"); | |
1041 | ret_code = LTTNG_ERR_FATAL; | |
1042 | goto end; | |
1043 | } | |
1044 | } | |
1045 | assert(descriptor->name); | |
1046 | ret = snprintf(local_uri, sizeof(local_uri), | |
1047 | "file://%s/%s/%s%s", | |
1048 | absolute_home_path, | |
1049 | DEFAULT_TRACE_DIR_NAME, descriptor->name, | |
1050 | creation_datetime_suffix); | |
1051 | if (ret >= sizeof(local_uri)) { | |
1052 | ERR("Truncation occurred while setting default local output destination"); | |
1053 | ret_code = LTTNG_ERR_SET_URL; | |
1054 | goto end; | |
1055 | } else if (ret < 0) { | |
1056 | PERROR("Failed to format default local output URI"); | |
1057 | ret_code = LTTNG_ERR_SET_URL; | |
1058 | goto end; | |
1059 | } | |
1060 | ||
1061 | uri_ret = uri_parse(local_uri, &uris); | |
1062 | if (uri_ret != 1) { | |
1063 | ret_code = LTTNG_ERR_SET_URL; | |
1064 | goto end; | |
1065 | } | |
1066 | free(descriptor->output.local); | |
1067 | descriptor->output.local = &uris[0]; | |
1068 | uris = NULL; | |
1069 | break; | |
1070 | } | |
1071 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
1072 | { | |
1073 | int ret; | |
1074 | ssize_t uri_ret; | |
1075 | struct lttng_uri *control = NULL, *data = NULL; | |
1076 | ||
1077 | uri_ret = uri_parse_str_urls("net://127.0.0.1", NULL, &uris); | |
1078 | if (uri_ret != 2) { | |
1079 | ret_code = LTTNG_ERR_SET_URL; | |
1080 | goto end; | |
1081 | } | |
1082 | ||
1083 | control = uri_copy(&uris[0]); | |
1084 | data = uri_copy(&uris[1]); | |
1085 | if (!control || !data) { | |
1086 | free(control); | |
1087 | free(data); | |
1088 | ret_code = LTTNG_ERR_SET_URL; | |
1089 | goto end; | |
1090 | } | |
1091 | ||
1092 | /* Ownership of uris is transferred. */ | |
1093 | ret = network_location_set_from_lttng_uris( | |
1094 | &descriptor->output.network, | |
1095 | control, data); | |
1096 | if (ret) { | |
1097 | abort(); | |
1098 | ret_code = LTTNG_ERR_SET_URL; | |
1099 | goto end; | |
1100 | } | |
1101 | break; | |
1102 | } | |
1103 | default: | |
1104 | abort(); | |
1105 | } | |
1106 | end: | |
1107 | free(uris); | |
1108 | return ret_code; | |
1109 | } | |
1110 | ||
1111 | /* | |
1112 | * Note that only properties that can be populated by the session daemon | |
1113 | * (output destination and name) are assigned. | |
1114 | */ | |
1115 | LTTNG_HIDDEN | |
1116 | int lttng_session_descriptor_assign( | |
1117 | struct lttng_session_descriptor *dst, | |
1118 | const struct lttng_session_descriptor *src) | |
1119 | { | |
1120 | int ret = 0; | |
1121 | ||
1122 | if (dst->type != src->type) { | |
1123 | ret = -1; | |
1124 | goto end; | |
1125 | } | |
1126 | if (dst->output_type != src->output_type) { | |
1127 | ret = -1; | |
1128 | goto end; | |
1129 | } | |
1130 | ret = lttng_session_descriptor_set_session_name(dst, src->name); | |
1131 | if (ret) { | |
1132 | goto end; | |
1133 | } | |
1134 | switch (dst->output_type) { | |
1135 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_LOCAL: | |
1136 | free(dst->output.local); | |
1137 | dst->output.local = uri_copy(src->output.local); | |
1138 | if (!dst->output.local) { | |
1139 | ret = -1; | |
1140 | goto end; | |
1141 | } | |
1142 | break; | |
1143 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NETWORK: | |
1144 | { | |
1145 | struct lttng_uri *control_copy = NULL, *data_copy = NULL; | |
1146 | ||
1147 | control_copy = uri_copy(dst->output.network.control); | |
1148 | if (!control_copy && dst->output.network.control) { | |
1149 | ret = -1; | |
1150 | goto end; | |
1151 | } | |
1152 | data_copy = uri_copy(dst->output.network.data); | |
1153 | if (!data_copy && dst->output.network.data) { | |
1154 | free(control_copy); | |
1155 | ret = -1; | |
1156 | goto end; | |
1157 | } | |
1158 | ret = network_location_set_from_lttng_uris(&dst->output.network, | |
1159 | control_copy, data_copy); | |
1160 | break; | |
1161 | } | |
1162 | case LTTNG_SESSION_DESCRIPTOR_OUTPUT_TYPE_NONE: | |
1163 | goto end; | |
1164 | } | |
1165 | end: | |
1166 | return ret; | |
1167 | } |