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00b27f33 HL |
1 | /* |
2 | * Copyright 2023 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | #include "internal/qlog.h" | |
11 | #include "internal/json_enc.h" | |
12 | #include "internal/common.h" | |
13 | #include "internal/cryptlib.h" | |
14 | ||
15 | # define BITS_PER_WORD (sizeof(size_t) * 8) | |
16 | # define NUM_ENABLED_W ((QLOG_EVENT_TYPE_NUM + BITS_PER_WORD - 1) / BITS_PER_WORD) | |
17 | ||
18 | static ossl_unused ossl_inline int bit_get(const size_t *p, uint32_t bit_no) | |
19 | { | |
20 | return p[bit_no / BITS_PER_WORD] & (((size_t)1) << (bit_no % BITS_PER_WORD)); | |
21 | } | |
22 | ||
23 | static ossl_unused ossl_inline void bit_set(size_t *p, uint32_t bit_no, int enable) | |
24 | { | |
25 | size_t mask = (((size_t)1) << (bit_no % BITS_PER_WORD)); | |
26 | ||
27 | if (enable) | |
28 | p[bit_no / BITS_PER_WORD] |= mask; | |
29 | else | |
30 | p[bit_no / BITS_PER_WORD] &= mask; | |
31 | } | |
32 | ||
00b27f33 HL |
33 | struct qlog_st { |
34 | QLOG_TRACE_INFO info; | |
35 | ||
b3706fd7 HL |
36 | BIO *bio; |
37 | size_t enabled[NUM_ENABLED_W]; | |
38 | uint32_t event_type; | |
39 | const char *event_cat, *event_name, *event_combined_name; | |
40 | OSSL_TIME event_time, prev_event_time; | |
41 | OSSL_JSON_ENC json; | |
42 | int header_done, first_event_done; | |
00b27f33 HL |
43 | }; |
44 | ||
45 | static OSSL_TIME default_now(void *arg) | |
46 | { | |
47 | return ossl_time_now(); | |
48 | } | |
49 | ||
50 | /* | |
51 | * Construction | |
52 | * ============ | |
53 | */ | |
54 | QLOG *ossl_qlog_new(const QLOG_TRACE_INFO *info) | |
55 | { | |
56 | QLOG *qlog = OPENSSL_zalloc(sizeof(QLOG)); | |
57 | ||
58 | if (qlog == NULL) | |
59 | return NULL; | |
60 | ||
61 | qlog->info = *info; | |
62 | ||
63 | qlog->info.title = NULL; | |
64 | qlog->info.description = NULL; | |
65 | qlog->info.group_id = NULL; | |
66 | ||
67 | if (info->title != NULL | |
68 | && (qlog->info.title = OPENSSL_strdup(info->title)) == NULL) | |
69 | goto err; | |
70 | ||
71 | if (info->description != NULL | |
72 | && (qlog->info.description = OPENSSL_strdup(info->description)) == NULL) | |
73 | goto err; | |
74 | ||
75 | if (info->group_id != NULL | |
76 | && (qlog->info.group_id = OPENSSL_strdup(info->group_id)) == NULL) | |
77 | goto err; | |
78 | ||
b3706fd7 HL |
79 | if (!ossl_json_init(&qlog->json, NULL, |
80 | OSSL_JSON_FLAG_IJSON | OSSL_JSON_FLAG_SEQ)) | |
00b27f33 HL |
81 | goto err; |
82 | ||
83 | if (qlog->info.now_cb == NULL) | |
84 | qlog->info.now_cb = default_now; | |
85 | ||
86 | return qlog; | |
87 | ||
88 | err: | |
89 | if (qlog != NULL) { | |
90 | OPENSSL_free((char *)qlog->info.title); | |
91 | OPENSSL_free((char *)qlog->info.description); | |
92 | OPENSSL_free((char *)qlog->info.group_id); | |
93 | OPENSSL_free(qlog); | |
94 | } | |
95 | return NULL; | |
96 | } | |
97 | ||
98 | QLOG *ossl_qlog_new_from_env(const QLOG_TRACE_INFO *info) | |
99 | { | |
100 | QLOG *qlog; | |
101 | const char *qlogdir = ossl_safe_getenv("QLOGDIR"); | |
102 | const char *qfilter = ossl_safe_getenv("QFILTER"); | |
103 | char qlogdir_sep, *filename = NULL; | |
104 | size_t i, l, strl; | |
105 | ||
106 | if (info == NULL || qlogdir == NULL || strlen(qlogdir) == 0) | |
107 | return NULL; | |
108 | ||
109 | l = strlen(qlogdir); | |
110 | qlogdir_sep = ossl_determine_dirsep(qlogdir); | |
111 | ||
112 | /* strlen("client" / "server"); strlen(".sqlog"); _; separator; _; NUL */ | |
113 | strl = l + info->odcid.id_len * 2 + 6 + 7 + 2; | |
114 | filename = OPENSSL_malloc(strl + 1); | |
115 | if (filename == NULL) | |
116 | return NULL; | |
117 | ||
118 | memcpy(filename, qlogdir, l); | |
119 | if (qlogdir_sep != '\0') | |
120 | filename[l++] = qlogdir_sep; | |
121 | ||
122 | for (i = 0; i < info->odcid.id_len; ++i) | |
123 | l += sprintf(filename + l, "%02x", info->odcid.id[i]); | |
124 | ||
125 | l += snprintf(filename + l, strl, "_%s.sqlog", | |
126 | info->is_server ? "server" : "client"); | |
127 | ||
128 | qlog = ossl_qlog_new(info); | |
129 | if (qlog == NULL) { | |
130 | OPENSSL_free(filename); | |
131 | return NULL; | |
132 | } | |
133 | ||
134 | if (!ossl_qlog_set_sink_filename(qlog, filename)) { | |
135 | OPENSSL_free(filename); | |
136 | ossl_qlog_free(qlog); | |
137 | return NULL; | |
138 | } | |
139 | ||
140 | if (qfilter != NULL && !ossl_qlog_set_filter(qlog, qfilter)) { | |
141 | OPENSSL_free(filename); | |
142 | ossl_qlog_free(qlog); | |
143 | return NULL; | |
144 | } | |
145 | ||
146 | OPENSSL_free(filename); | |
147 | return qlog; | |
148 | } | |
149 | ||
150 | void ossl_qlog_free(QLOG *qlog) | |
151 | { | |
152 | if (qlog == NULL) | |
153 | return; | |
154 | ||
155 | ossl_json_cleanup(&qlog->json); | |
156 | BIO_free_all(qlog->bio); | |
157 | OPENSSL_free((char *)qlog->info.title); | |
158 | OPENSSL_free((char *)qlog->info.description); | |
159 | OPENSSL_free((char *)qlog->info.group_id); | |
160 | OPENSSL_free(qlog); | |
161 | } | |
162 | ||
163 | /* | |
164 | * Configuration | |
165 | * ============= | |
166 | */ | |
167 | int ossl_qlog_set_sink_bio(QLOG *qlog, BIO *bio) | |
168 | { | |
169 | if (qlog == NULL) | |
170 | return 0; | |
171 | ||
172 | ossl_qlog_flush(qlog); /* best effort */ | |
173 | BIO_free_all(qlog->bio); | |
174 | qlog->bio = bio; | |
175 | ossl_json_set_sink(&qlog->json, bio); | |
176 | return 1; | |
177 | } | |
178 | ||
179 | #ifndef OPENSSL_NO_STDIO | |
180 | ||
181 | int ossl_qlog_set_sink_file(QLOG *qlog, FILE *f, int close_flag) | |
182 | { | |
183 | BIO *bio; | |
184 | ||
185 | if (qlog == NULL) | |
186 | return 0; | |
187 | ||
188 | bio = BIO_new_fp(f, BIO_CLOSE); | |
189 | if (bio == NULL) | |
190 | return 0; | |
191 | ||
192 | if (!ossl_qlog_set_sink_bio(qlog, bio)) { | |
193 | BIO_free_all(bio); | |
194 | return 0; | |
195 | } | |
196 | ||
197 | return 1; | |
198 | } | |
199 | ||
200 | #endif | |
201 | ||
202 | int ossl_qlog_set_sink_filename(QLOG *qlog, const char *filename) | |
203 | { | |
204 | BIO *bio; | |
205 | ||
206 | if (qlog == NULL) | |
207 | return 0; | |
208 | ||
209 | /* | |
210 | * We supply our own text encoding as JSON requires UTF-8, so disable any | |
211 | * OS-specific processing here. | |
212 | */ | |
213 | bio = BIO_new_file(filename, "wb"); | |
214 | if (bio == NULL) | |
215 | return 0; | |
216 | ||
217 | if (!ossl_qlog_set_sink_bio(qlog, bio)) { | |
218 | BIO_free_all(bio); | |
219 | return 0; | |
220 | } | |
221 | ||
222 | return 1; | |
223 | } | |
224 | ||
225 | int ossl_qlog_flush(QLOG *qlog) | |
226 | { | |
227 | if (qlog == NULL) | |
228 | return 1; | |
229 | ||
230 | return ossl_json_flush(&qlog->json); | |
231 | } | |
232 | ||
233 | int ossl_qlog_set_event_type_enabled(QLOG *qlog, uint32_t event_type, | |
234 | int enabled) | |
235 | { | |
236 | if (qlog == NULL || event_type >= QLOG_EVENT_TYPE_NUM) | |
237 | return 0; | |
238 | ||
239 | bit_set(qlog->enabled, event_type, enabled); | |
240 | return 1; | |
241 | } | |
242 | ||
243 | int ossl_qlog_enabled(QLOG *qlog, uint32_t event_type) | |
244 | { | |
245 | if (qlog == NULL) | |
246 | return 0; | |
247 | ||
248 | return bit_get(qlog->enabled, event_type); | |
249 | } | |
250 | ||
251 | /* | |
252 | * Event Lifecycle | |
253 | * =============== | |
254 | */ | |
255 | static void write_str_once(QLOG *qlog, const char *key, char **p) | |
256 | { | |
257 | if (*p == NULL) | |
258 | return; | |
259 | ||
260 | ossl_json_key(&qlog->json, key); | |
261 | ossl_json_str(&qlog->json, *p); | |
262 | ||
263 | OPENSSL_free(*p); | |
264 | *p = NULL; | |
265 | } | |
266 | ||
267 | static void qlog_event_seq_header(QLOG *qlog) | |
268 | { | |
269 | if (qlog->header_done) | |
270 | return; | |
271 | ||
272 | ossl_json_object_begin(&qlog->json); | |
273 | { | |
274 | ossl_json_key(&qlog->json, "qlog_version"); | |
275 | ossl_json_str(&qlog->json, "0.3"); | |
276 | ||
277 | ossl_json_key(&qlog->json, "qlog_format"); | |
278 | ossl_json_str(&qlog->json, "JSON-SEQ"); | |
279 | ||
280 | write_str_once(qlog, "title", (char **)&qlog->info.title); | |
281 | write_str_once(qlog, "description", (char **)&qlog->info.description); | |
282 | ||
283 | ossl_json_key(&qlog->json, "trace"); | |
284 | ossl_json_object_begin(&qlog->json); | |
285 | { | |
286 | ossl_json_key(&qlog->json, "common_fields"); | |
287 | ossl_json_object_begin(&qlog->json); | |
288 | { | |
289 | ossl_json_key(&qlog->json, "time_format"); | |
290 | ossl_json_str(&qlog->json, "delta"); | |
291 | ||
292 | ossl_json_key(&qlog->json, "protocol_type"); | |
293 | ossl_json_array_begin(&qlog->json); | |
294 | { | |
295 | ossl_json_str(&qlog->json, "QUIC"); | |
296 | } | |
297 | ossl_json_array_end(&qlog->json); | |
298 | ||
299 | write_str_once(qlog, "group_id", (char **)&qlog->info.group_id); | |
300 | ||
301 | ossl_json_key(&qlog->json, "system_info"); | |
302 | ossl_json_object_begin(&qlog->json); | |
303 | { | |
304 | ossl_json_key(&qlog->json, "process_id"); | |
305 | ossl_json_u64(&qlog->json, (uint64_t)getpid()); | |
306 | } | |
307 | ossl_json_object_end(&qlog->json); | |
308 | } | |
309 | ossl_json_object_end(&qlog->json); | |
310 | ||
311 | ossl_json_key(&qlog->json, "vantage_point"); | |
312 | ossl_json_object_begin(&qlog->json); | |
313 | { | |
314 | ossl_json_key(&qlog->json, "type"); | |
315 | ossl_json_str(&qlog->json, qlog->info.is_server | |
316 | ? "server" : "client"); | |
317 | } | |
318 | ossl_json_object_end(&qlog->json); | |
319 | } | |
320 | ossl_json_object_end(&qlog->json); | |
321 | } | |
322 | ossl_json_object_end(&qlog->json); | |
323 | ||
324 | qlog->header_done = 1; | |
325 | } | |
326 | ||
327 | static void qlog_event_prologue(QLOG *qlog) | |
328 | { | |
329 | qlog_event_seq_header(qlog); | |
330 | ||
331 | ossl_json_object_begin(&qlog->json); | |
332 | ||
333 | ossl_json_key(&qlog->json, "name"); | |
334 | ossl_json_str(&qlog->json, qlog->event_combined_name); | |
335 | ||
336 | ossl_json_key(&qlog->json, "data"); | |
337 | ossl_json_object_begin(&qlog->json); | |
338 | } | |
339 | ||
340 | static void qlog_event_epilogue(QLOG *qlog) | |
341 | { | |
342 | ossl_json_object_end(&qlog->json); | |
343 | ||
344 | ossl_json_key(&qlog->json, "time"); | |
345 | if (!qlog->first_event_done) { | |
346 | ossl_json_u64(&qlog->json, ossl_time2ms(qlog->event_time)); | |
347 | qlog->prev_event_time = qlog->event_time; | |
348 | qlog->first_event_done = 1; | |
349 | } else { | |
350 | OSSL_TIME delta = ossl_time_subtract(qlog->event_time, | |
351 | qlog->prev_event_time); | |
352 | ||
353 | ossl_json_u64(&qlog->json, ossl_time2ms(delta)); | |
354 | qlog->prev_event_time = qlog->event_time; | |
355 | } | |
356 | ||
357 | ossl_json_object_end(&qlog->json); | |
358 | } | |
359 | ||
360 | int ossl_qlog_event_try_begin(QLOG *qlog, | |
361 | uint32_t event_type, | |
362 | const char *event_cat, | |
363 | const char *event_name, | |
364 | const char *event_combined_name) | |
365 | { | |
366 | if (qlog == NULL) | |
367 | return 0; | |
368 | ||
369 | if (!ossl_assert(qlog->event_type == QLOG_EVENT_TYPE_NONE) | |
370 | || !ossl_qlog_enabled(qlog, event_type)) | |
371 | return 0; | |
372 | ||
373 | qlog->event_type = event_type; | |
374 | qlog->event_cat = event_cat; | |
375 | qlog->event_name = event_name; | |
376 | qlog->event_combined_name = event_combined_name; | |
377 | qlog->event_time = qlog->info.now_cb(qlog->info.now_cb_arg); | |
378 | ||
379 | qlog_event_prologue(qlog); | |
380 | return 1; | |
381 | } | |
382 | ||
383 | static void qlog_event_end(QLOG *qlog, int abort) | |
384 | { | |
385 | if (!ossl_assert(qlog != NULL && qlog->event_type != QLOG_EVENT_TYPE_NONE)) | |
386 | return; | |
387 | ||
388 | qlog_event_epilogue(qlog); | |
389 | qlog->event_type = QLOG_EVENT_TYPE_NONE; | |
390 | } | |
391 | ||
392 | void ossl_qlog_event_end(QLOG *qlog) | |
393 | { | |
394 | qlog_event_end(qlog, /*abort=*/0); | |
395 | } | |
396 | ||
397 | void ossl_qlog_event_abort(QLOG *qlog) | |
398 | { | |
399 | qlog_event_end(qlog, /*abort=*/1); | |
400 | } | |
401 | ||
402 | /* | |
403 | * Field Generators | |
404 | * ================ | |
405 | */ | |
406 | void ossl_qlog_group_begin(QLOG *qlog, const char *name) | |
407 | { | |
408 | if (name != NULL) | |
409 | ossl_json_key(&qlog->json, name); | |
410 | ||
411 | ossl_json_object_begin(&qlog->json); | |
412 | } | |
413 | ||
414 | void ossl_qlog_group_end(QLOG *qlog) | |
415 | { | |
416 | ossl_json_object_end(&qlog->json); | |
417 | } | |
418 | ||
419 | void ossl_qlog_array_begin(QLOG *qlog, const char *name) | |
420 | { | |
421 | if (name != NULL) | |
422 | ossl_json_key(&qlog->json, name); | |
423 | ||
424 | ossl_json_array_begin(&qlog->json); | |
425 | } | |
426 | ||
427 | void ossl_qlog_array_end(QLOG *qlog) | |
428 | { | |
429 | ossl_json_array_end(&qlog->json); | |
430 | } | |
431 | ||
432 | void ossl_qlog_override_time(QLOG *qlog, OSSL_TIME event_time) | |
433 | { | |
434 | qlog->event_time = event_time; | |
435 | } | |
436 | ||
437 | void ossl_qlog_str(QLOG *qlog, const char *name, const char *value) | |
438 | { | |
439 | if (name != NULL) | |
440 | ossl_json_key(&qlog->json, name); | |
441 | ||
442 | ossl_json_str(&qlog->json, value); | |
443 | } | |
444 | ||
445 | void ossl_qlog_str_len(QLOG *qlog, const char *name, | |
446 | const char *value, size_t value_len) | |
447 | { | |
448 | if (name != NULL) | |
449 | ossl_json_key(&qlog->json, name); | |
450 | ||
451 | ossl_json_str_len(&qlog->json, value, value_len); | |
452 | } | |
453 | ||
454 | void ossl_qlog_u64(QLOG *qlog, const char *name, uint64_t value) | |
455 | { | |
456 | if (name != NULL) | |
457 | ossl_json_key(&qlog->json, name); | |
458 | ||
459 | ossl_json_u64(&qlog->json, value); | |
460 | } | |
461 | ||
462 | void ossl_qlog_i64(QLOG *qlog, const char *name, int64_t value) | |
463 | { | |
464 | if (name != NULL) | |
465 | ossl_json_key(&qlog->json, name); | |
466 | ||
467 | ossl_json_i64(&qlog->json, value); | |
468 | } | |
469 | ||
470 | void ossl_qlog_bool(QLOG *qlog, const char *name, int value) | |
471 | { | |
472 | if (name != NULL) | |
473 | ossl_json_key(&qlog->json, name); | |
474 | ||
475 | ossl_json_bool(&qlog->json, value); | |
476 | } | |
477 | ||
478 | void ossl_qlog_bin(QLOG *qlog, const char *name, | |
479 | const void *value, size_t value_len) | |
480 | { | |
481 | if (name != NULL) | |
482 | ossl_json_key(&qlog->json, name); | |
483 | ||
484 | ossl_json_str_hex(&qlog->json, value, value_len); | |
485 | } | |
486 | ||
487 | /* | |
488 | * Filter Parsing | |
489 | * ============== | |
490 | */ | |
491 | struct lexer { | |
492 | const char *p, *term_end, *end; | |
493 | }; | |
494 | ||
495 | static ossl_inline int is_term_sep_ws(char c) | |
496 | { | |
497 | return c == ' ' || c == '\r' || c == '\n' || c == '\t'; | |
498 | } | |
499 | ||
500 | static ossl_inline int is_name_char(char c) | |
501 | { | |
502 | return (c >= 'a' && c <= 'z') | |
503 | || (c >= 'A' && c <= 'Z') | |
504 | || c == '_' || c == '-'; | |
505 | } | |
506 | ||
507 | static int lex_init(struct lexer *lex, const char *in, size_t in_len) | |
508 | { | |
509 | if (in == NULL) | |
510 | return 0; | |
511 | ||
512 | lex->p = in; | |
513 | lex->term_end = in; | |
514 | lex->end = in + in_len; | |
515 | return 1; | |
516 | } | |
517 | ||
518 | static int lex_do(struct lexer *lex) | |
519 | { | |
520 | const char *p = lex->term_end, *end = lex->end, *term_end; | |
521 | ||
522 | for (; is_term_sep_ws(*p) && p < end; ++p); | |
523 | ||
524 | if (p == end) { | |
525 | lex->p = end; | |
526 | lex->term_end = end; | |
527 | return 0; | |
528 | } | |
529 | ||
530 | for (term_end = p; !is_term_sep_ws(*term_end) && term_end < end; ++term_end); | |
531 | ||
532 | lex->p = p; | |
533 | lex->term_end = term_end; | |
534 | return 1; | |
535 | } | |
536 | ||
537 | static int lex_eot(struct lexer *lex) | |
538 | { | |
539 | return lex->p == lex->term_end; | |
540 | } | |
541 | ||
542 | static int lex_peek_char(struct lexer *lex) | |
543 | { | |
544 | return lex_eot(lex) ? -1 : *lex->p; | |
545 | } | |
546 | ||
547 | static int lex_skip_char(struct lexer *lex) | |
548 | { | |
549 | if (lex_eot(lex)) | |
550 | return 0; | |
551 | ||
552 | ++lex->p; | |
553 | return 1; | |
554 | } | |
555 | ||
556 | static int lex_match(struct lexer *lex, const char *s, size_t s_len) | |
557 | { | |
558 | if ((size_t)(lex->term_end - lex->p) != s_len) | |
559 | return 0; | |
560 | ||
561 | if (memcmp(lex->p, s, s_len)) | |
562 | return 0; | |
563 | ||
564 | return 1; | |
565 | } | |
566 | ||
567 | static void lex_get_rest(struct lexer *lex, const char **str, size_t *str_l) | |
568 | { | |
569 | *str = lex->p; | |
570 | *str_l = lex->term_end - lex->p; | |
571 | } | |
572 | ||
573 | static int lex_extract_to(struct lexer *lex, char c, | |
574 | const char **str, size_t *str_l) | |
575 | { | |
576 | const char *p = lex->p, *term_end = lex->term_end, *s; | |
577 | ||
578 | for (s = p; s < term_end && *s != c; ++s); | |
579 | if (s == term_end) | |
580 | return 0; | |
581 | ||
582 | *str = p; | |
583 | *str_l = term_end - s; | |
584 | lex->p = ++s; | |
585 | return 1; | |
586 | } | |
587 | ||
588 | static int ossl_unused filter_match_event(const char *cat, size_t cat_l, | |
589 | const char *event, size_t event_l, | |
590 | const char *expect_cat, | |
591 | const char *expect_event) | |
592 | { | |
593 | size_t expect_cat_l = strlen(expect_cat); | |
594 | size_t expect_event_l = strlen(expect_event); | |
595 | ||
596 | if ((cat != NULL && cat_l != expect_cat_l) | |
597 | || (event != NULL && event_l != expect_event_l) | |
598 | || (cat != NULL && memcmp(cat, expect_cat, expect_cat_l)) | |
599 | || (event != NULL && memcmp(event, expect_event, expect_event_l))) | |
600 | return 0; | |
601 | ||
602 | return 1; | |
603 | } | |
604 | ||
605 | /* | |
606 | * enabled: event enablement bitmask Array of size NUM_ENABLED_W. | |
607 | * add: 1 to enable an event, 0 to disable. | |
608 | * cat: Category name/length. Not necessarily zero terminated. | |
609 | * NULL to match any. | |
610 | * event: Event name/length. Not necessarily zero terminated. | |
611 | * NULL to match any. | |
612 | */ | |
613 | static void filter_apply(size_t *enabled, int add, | |
614 | const char *cat, size_t cat_l, | |
615 | const char *event, size_t event_l) | |
616 | { | |
617 | /* Find events which match the given filters. */ | |
618 | # define QLOG_EVENT(e_cat, e_name) \ | |
619 | if (filter_match_event(cat, cat_l, event, event_l, \ | |
620 | #e_cat, #e_name)) \ | |
621 | bit_set(enabled, QLOG_EVENT_TYPE_##e_cat##_##e_name, add); | |
622 | # include "internal/qlog_events.h" | |
623 | # undef QLOG_EVENT | |
624 | } | |
625 | ||
626 | static int lex_fail(struct lexer *lex, const char *msg) | |
627 | { | |
628 | lex->p = lex->term_end = lex->end; | |
629 | return 0; | |
630 | } | |
631 | ||
632 | static int validate_name(const char **p, size_t *l) | |
633 | { | |
634 | const char *p_ = *p; | |
635 | size_t i, l_ = *l; | |
636 | ||
637 | if (l_ == 1 && *p_ == '*') { | |
638 | *p = NULL; | |
639 | *l = 0; | |
640 | return 1; | |
641 | } | |
642 | ||
643 | if (l_ == 0) | |
644 | return 0; | |
645 | ||
646 | for (i = 0; i < l_; ++i) | |
647 | if (!is_name_char(p_[i])) | |
648 | return 0; | |
649 | ||
650 | return 1; | |
651 | } | |
652 | ||
653 | int ossl_qlog_set_filter(QLOG *qlog, const char *filter) | |
654 | { | |
655 | struct lexer lex = {0}; | |
656 | char c; | |
657 | const char *cat, *event; | |
658 | size_t cat_l, event_l, enabled[NUM_ENABLED_W]; | |
659 | int add; | |
660 | ||
661 | memcpy(enabled, qlog->enabled, sizeof(enabled)); | |
662 | ||
663 | if (!lex_init(&lex, filter, strlen(filter))) | |
664 | return 0; | |
665 | ||
666 | while (lex_do(&lex)) { | |
667 | c = lex_peek_char(&lex); | |
668 | if (c == '+' || c == '-') { | |
669 | add = (c == '+'); | |
670 | lex_skip_char(&lex); | |
671 | ||
672 | c = lex_peek_char(&lex); | |
673 | if (!is_name_char(c) && c != '*') | |
674 | return lex_fail(&lex, "expected alphanumeric name or '*'" | |
675 | " after +/-"); | |
676 | } else if (!is_name_char(c) && c != '*') { | |
677 | return lex_fail(&lex, "expected +/- or alphanumeric name or '*'"); | |
678 | } else { | |
679 | add = 1; | |
680 | } | |
681 | ||
682 | if (lex_match(&lex, "*", 1)) { | |
683 | filter_apply(enabled, add, NULL, 0, NULL, 0); | |
684 | continue; | |
685 | } | |
686 | ||
687 | if (!lex_extract_to(&lex, ':', &cat, &cat_l)) | |
688 | return lex_fail(&lex, "expected ':' after category name"); | |
689 | ||
690 | lex_get_rest(&lex, &event, &event_l); | |
691 | if (!validate_name(&cat, &cat_l)) | |
692 | return lex_fail(&lex, "expected alphanumeric category name or '*'"); | |
693 | if (!validate_name(&event, &event_l)) | |
694 | return lex_fail(&lex, "expected alphanumeric event name or '*'"); | |
695 | ||
696 | filter_apply(enabled, add, cat, cat_l, event, event_l); | |
697 | } | |
698 | ||
699 | memcpy(qlog->enabled, enabled, sizeof(enabled)); | |
700 | return 1; | |
701 | } |