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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 | |
0e6eb431 | 30 | p[bit_no / BITS_PER_WORD] &= ~mask; |
00b27f33 HL |
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 | ||
29bd1e2d HL |
61 | qlog->info.odcid = info->odcid; |
62 | qlog->info.is_server = info->is_server; | |
63 | qlog->info.now_cb = info->now_cb; | |
64 | qlog->info.now_cb_arg = info->now_cb_arg; | |
00b27f33 HL |
65 | |
66 | if (info->title != NULL | |
67 | && (qlog->info.title = OPENSSL_strdup(info->title)) == NULL) | |
68 | goto err; | |
69 | ||
70 | if (info->description != NULL | |
71 | && (qlog->info.description = OPENSSL_strdup(info->description)) == NULL) | |
72 | goto err; | |
73 | ||
74 | if (info->group_id != NULL | |
75 | && (qlog->info.group_id = OPENSSL_strdup(info->group_id)) == NULL) | |
76 | goto err; | |
77 | ||
b3706fd7 HL |
78 | if (!ossl_json_init(&qlog->json, NULL, |
79 | OSSL_JSON_FLAG_IJSON | OSSL_JSON_FLAG_SEQ)) | |
00b27f33 HL |
80 | goto err; |
81 | ||
82 | if (qlog->info.now_cb == NULL) | |
83 | qlog->info.now_cb = default_now; | |
84 | ||
85 | return qlog; | |
86 | ||
87 | err: | |
88 | if (qlog != NULL) { | |
89 | OPENSSL_free((char *)qlog->info.title); | |
90 | OPENSSL_free((char *)qlog->info.description); | |
91 | OPENSSL_free((char *)qlog->info.group_id); | |
92 | OPENSSL_free(qlog); | |
93 | } | |
94 | return NULL; | |
95 | } | |
96 | ||
97 | QLOG *ossl_qlog_new_from_env(const QLOG_TRACE_INFO *info) | |
98 | { | |
29bd1e2d | 99 | QLOG *qlog = NULL; |
00b27f33 | 100 | const char *qlogdir = ossl_safe_getenv("QLOGDIR"); |
9dcad797 | 101 | const char *qfilter = ossl_safe_getenv("OSSL_QFILTER"); |
00b27f33 HL |
102 | char qlogdir_sep, *filename = NULL; |
103 | size_t i, l, strl; | |
104 | ||
29bd1e2d | 105 | if (info == NULL || qlogdir == NULL) |
00b27f33 HL |
106 | return NULL; |
107 | ||
108 | l = strlen(qlogdir); | |
29bd1e2d HL |
109 | if (l == 0) |
110 | return NULL; | |
111 | ||
00b27f33 HL |
112 | qlogdir_sep = ossl_determine_dirsep(qlogdir); |
113 | ||
114 | /* strlen("client" / "server"); strlen(".sqlog"); _; separator; _; NUL */ | |
115 | strl = l + info->odcid.id_len * 2 + 6 + 7 + 2; | |
116 | filename = OPENSSL_malloc(strl + 1); | |
117 | if (filename == NULL) | |
118 | return NULL; | |
119 | ||
120 | memcpy(filename, qlogdir, l); | |
121 | if (qlogdir_sep != '\0') | |
122 | filename[l++] = qlogdir_sep; | |
123 | ||
124 | for (i = 0; i < info->odcid.id_len; ++i) | |
125 | l += sprintf(filename + l, "%02x", info->odcid.id[i]); | |
126 | ||
29bd1e2d | 127 | l += snprintf(filename + l, strl - l, "_%s.sqlog", |
00b27f33 HL |
128 | info->is_server ? "server" : "client"); |
129 | ||
130 | qlog = ossl_qlog_new(info); | |
29bd1e2d HL |
131 | if (qlog == NULL) |
132 | goto err; | |
00b27f33 | 133 | |
29bd1e2d HL |
134 | if (!ossl_qlog_set_sink_filename(qlog, filename)) |
135 | goto err; | |
00b27f33 | 136 | |
9dcad797 HL |
137 | if (qfilter == NULL) |
138 | qfilter = "*"; | |
139 | ||
140 | if (!ossl_qlog_set_filter(qlog, qfilter)) | |
29bd1e2d | 141 | goto err; |
00b27f33 HL |
142 | |
143 | OPENSSL_free(filename); | |
144 | return qlog; | |
29bd1e2d HL |
145 | |
146 | err: | |
147 | OPENSSL_free(filename); | |
148 | ossl_qlog_free(qlog); | |
149 | return NULL; | |
00b27f33 HL |
150 | } |
151 | ||
152 | void ossl_qlog_free(QLOG *qlog) | |
153 | { | |
154 | if (qlog == NULL) | |
155 | return; | |
156 | ||
157 | ossl_json_cleanup(&qlog->json); | |
158 | BIO_free_all(qlog->bio); | |
159 | OPENSSL_free((char *)qlog->info.title); | |
160 | OPENSSL_free((char *)qlog->info.description); | |
161 | OPENSSL_free((char *)qlog->info.group_id); | |
162 | OPENSSL_free(qlog); | |
163 | } | |
164 | ||
165 | /* | |
166 | * Configuration | |
167 | * ============= | |
168 | */ | |
169 | int ossl_qlog_set_sink_bio(QLOG *qlog, BIO *bio) | |
170 | { | |
171 | if (qlog == NULL) | |
172 | return 0; | |
173 | ||
174 | ossl_qlog_flush(qlog); /* best effort */ | |
175 | BIO_free_all(qlog->bio); | |
176 | qlog->bio = bio; | |
177 | ossl_json_set_sink(&qlog->json, bio); | |
178 | return 1; | |
179 | } | |
180 | ||
181 | #ifndef OPENSSL_NO_STDIO | |
182 | ||
183 | int ossl_qlog_set_sink_file(QLOG *qlog, FILE *f, int close_flag) | |
184 | { | |
185 | BIO *bio; | |
186 | ||
187 | if (qlog == NULL) | |
188 | return 0; | |
189 | ||
190 | bio = BIO_new_fp(f, BIO_CLOSE); | |
191 | if (bio == NULL) | |
192 | return 0; | |
193 | ||
194 | if (!ossl_qlog_set_sink_bio(qlog, bio)) { | |
195 | BIO_free_all(bio); | |
196 | return 0; | |
197 | } | |
198 | ||
199 | return 1; | |
200 | } | |
201 | ||
202 | #endif | |
203 | ||
204 | int ossl_qlog_set_sink_filename(QLOG *qlog, const char *filename) | |
205 | { | |
206 | BIO *bio; | |
207 | ||
208 | if (qlog == NULL) | |
209 | return 0; | |
210 | ||
211 | /* | |
212 | * We supply our own text encoding as JSON requires UTF-8, so disable any | |
213 | * OS-specific processing here. | |
214 | */ | |
215 | bio = BIO_new_file(filename, "wb"); | |
216 | if (bio == NULL) | |
217 | return 0; | |
218 | ||
219 | if (!ossl_qlog_set_sink_bio(qlog, bio)) { | |
220 | BIO_free_all(bio); | |
221 | return 0; | |
222 | } | |
223 | ||
224 | return 1; | |
225 | } | |
226 | ||
227 | int ossl_qlog_flush(QLOG *qlog) | |
228 | { | |
229 | if (qlog == NULL) | |
230 | return 1; | |
231 | ||
232 | return ossl_json_flush(&qlog->json); | |
233 | } | |
234 | ||
235 | int ossl_qlog_set_event_type_enabled(QLOG *qlog, uint32_t event_type, | |
236 | int enabled) | |
237 | { | |
238 | if (qlog == NULL || event_type >= QLOG_EVENT_TYPE_NUM) | |
239 | return 0; | |
240 | ||
241 | bit_set(qlog->enabled, event_type, enabled); | |
242 | return 1; | |
243 | } | |
244 | ||
245 | int ossl_qlog_enabled(QLOG *qlog, uint32_t event_type) | |
246 | { | |
247 | if (qlog == NULL) | |
248 | return 0; | |
249 | ||
250 | return bit_get(qlog->enabled, event_type); | |
251 | } | |
252 | ||
253 | /* | |
254 | * Event Lifecycle | |
255 | * =============== | |
256 | */ | |
257 | static void write_str_once(QLOG *qlog, const char *key, char **p) | |
258 | { | |
259 | if (*p == NULL) | |
260 | return; | |
261 | ||
262 | ossl_json_key(&qlog->json, key); | |
263 | ossl_json_str(&qlog->json, *p); | |
264 | ||
265 | OPENSSL_free(*p); | |
266 | *p = NULL; | |
267 | } | |
268 | ||
269 | static void qlog_event_seq_header(QLOG *qlog) | |
270 | { | |
271 | if (qlog->header_done) | |
272 | return; | |
273 | ||
274 | ossl_json_object_begin(&qlog->json); | |
275 | { | |
276 | ossl_json_key(&qlog->json, "qlog_version"); | |
277 | ossl_json_str(&qlog->json, "0.3"); | |
278 | ||
279 | ossl_json_key(&qlog->json, "qlog_format"); | |
280 | ossl_json_str(&qlog->json, "JSON-SEQ"); | |
281 | ||
282 | write_str_once(qlog, "title", (char **)&qlog->info.title); | |
283 | write_str_once(qlog, "description", (char **)&qlog->info.description); | |
284 | ||
285 | ossl_json_key(&qlog->json, "trace"); | |
286 | ossl_json_object_begin(&qlog->json); | |
287 | { | |
288 | ossl_json_key(&qlog->json, "common_fields"); | |
289 | ossl_json_object_begin(&qlog->json); | |
290 | { | |
291 | ossl_json_key(&qlog->json, "time_format"); | |
292 | ossl_json_str(&qlog->json, "delta"); | |
293 | ||
294 | ossl_json_key(&qlog->json, "protocol_type"); | |
295 | ossl_json_array_begin(&qlog->json); | |
296 | { | |
297 | ossl_json_str(&qlog->json, "QUIC"); | |
29bd1e2d | 298 | } /* protocol_type */ |
00b27f33 HL |
299 | ossl_json_array_end(&qlog->json); |
300 | ||
301 | write_str_once(qlog, "group_id", (char **)&qlog->info.group_id); | |
302 | ||
303 | ossl_json_key(&qlog->json, "system_info"); | |
304 | ossl_json_object_begin(&qlog->json); | |
305 | { | |
306 | ossl_json_key(&qlog->json, "process_id"); | |
307 | ossl_json_u64(&qlog->json, (uint64_t)getpid()); | |
29bd1e2d | 308 | } /* system_info */ |
00b27f33 | 309 | ossl_json_object_end(&qlog->json); |
29bd1e2d | 310 | } /* common_fields */ |
00b27f33 HL |
311 | ossl_json_object_end(&qlog->json); |
312 | ||
313 | ossl_json_key(&qlog->json, "vantage_point"); | |
314 | ossl_json_object_begin(&qlog->json); | |
315 | { | |
316 | ossl_json_key(&qlog->json, "type"); | |
317 | ossl_json_str(&qlog->json, qlog->info.is_server | |
318 | ? "server" : "client"); | |
29bd1e2d | 319 | } /* vantage_point */ |
00b27f33 | 320 | ossl_json_object_end(&qlog->json); |
29bd1e2d | 321 | } /* trace */ |
00b27f33 HL |
322 | ossl_json_object_end(&qlog->json); |
323 | } | |
324 | ossl_json_object_end(&qlog->json); | |
325 | ||
326 | qlog->header_done = 1; | |
327 | } | |
328 | ||
329 | static void qlog_event_prologue(QLOG *qlog) | |
330 | { | |
331 | qlog_event_seq_header(qlog); | |
332 | ||
333 | ossl_json_object_begin(&qlog->json); | |
334 | ||
335 | ossl_json_key(&qlog->json, "name"); | |
336 | ossl_json_str(&qlog->json, qlog->event_combined_name); | |
337 | ||
338 | ossl_json_key(&qlog->json, "data"); | |
339 | ossl_json_object_begin(&qlog->json); | |
340 | } | |
341 | ||
342 | static void qlog_event_epilogue(QLOG *qlog) | |
343 | { | |
344 | ossl_json_object_end(&qlog->json); | |
345 | ||
346 | ossl_json_key(&qlog->json, "time"); | |
347 | if (!qlog->first_event_done) { | |
348 | ossl_json_u64(&qlog->json, ossl_time2ms(qlog->event_time)); | |
349 | qlog->prev_event_time = qlog->event_time; | |
350 | qlog->first_event_done = 1; | |
351 | } else { | |
352 | OSSL_TIME delta = ossl_time_subtract(qlog->event_time, | |
353 | qlog->prev_event_time); | |
354 | ||
355 | ossl_json_u64(&qlog->json, ossl_time2ms(delta)); | |
356 | qlog->prev_event_time = qlog->event_time; | |
357 | } | |
358 | ||
359 | ossl_json_object_end(&qlog->json); | |
360 | } | |
361 | ||
362 | int ossl_qlog_event_try_begin(QLOG *qlog, | |
363 | uint32_t event_type, | |
364 | const char *event_cat, | |
365 | const char *event_name, | |
366 | const char *event_combined_name) | |
367 | { | |
368 | if (qlog == NULL) | |
369 | return 0; | |
370 | ||
371 | if (!ossl_assert(qlog->event_type == QLOG_EVENT_TYPE_NONE) | |
372 | || !ossl_qlog_enabled(qlog, event_type)) | |
373 | return 0; | |
374 | ||
375 | qlog->event_type = event_type; | |
376 | qlog->event_cat = event_cat; | |
377 | qlog->event_name = event_name; | |
378 | qlog->event_combined_name = event_combined_name; | |
379 | qlog->event_time = qlog->info.now_cb(qlog->info.now_cb_arg); | |
380 | ||
381 | qlog_event_prologue(qlog); | |
382 | return 1; | |
383 | } | |
384 | ||
29bd1e2d | 385 | void ossl_qlog_event_end(QLOG *qlog) |
00b27f33 HL |
386 | { |
387 | if (!ossl_assert(qlog != NULL && qlog->event_type != QLOG_EVENT_TYPE_NONE)) | |
388 | return; | |
389 | ||
390 | qlog_event_epilogue(qlog); | |
391 | qlog->event_type = QLOG_EVENT_TYPE_NONE; | |
392 | } | |
393 | ||
00b27f33 HL |
394 | /* |
395 | * Field Generators | |
396 | * ================ | |
397 | */ | |
398 | void ossl_qlog_group_begin(QLOG *qlog, const char *name) | |
399 | { | |
400 | if (name != NULL) | |
401 | ossl_json_key(&qlog->json, name); | |
402 | ||
403 | ossl_json_object_begin(&qlog->json); | |
404 | } | |
405 | ||
406 | void ossl_qlog_group_end(QLOG *qlog) | |
407 | { | |
408 | ossl_json_object_end(&qlog->json); | |
409 | } | |
410 | ||
411 | void ossl_qlog_array_begin(QLOG *qlog, const char *name) | |
412 | { | |
413 | if (name != NULL) | |
414 | ossl_json_key(&qlog->json, name); | |
415 | ||
416 | ossl_json_array_begin(&qlog->json); | |
417 | } | |
418 | ||
419 | void ossl_qlog_array_end(QLOG *qlog) | |
420 | { | |
421 | ossl_json_array_end(&qlog->json); | |
422 | } | |
423 | ||
424 | void ossl_qlog_override_time(QLOG *qlog, OSSL_TIME event_time) | |
425 | { | |
426 | qlog->event_time = event_time; | |
427 | } | |
428 | ||
429 | void ossl_qlog_str(QLOG *qlog, const char *name, const char *value) | |
430 | { | |
431 | if (name != NULL) | |
432 | ossl_json_key(&qlog->json, name); | |
433 | ||
434 | ossl_json_str(&qlog->json, value); | |
435 | } | |
436 | ||
437 | void ossl_qlog_str_len(QLOG *qlog, const char *name, | |
438 | const char *value, size_t value_len) | |
439 | { | |
440 | if (name != NULL) | |
441 | ossl_json_key(&qlog->json, name); | |
442 | ||
443 | ossl_json_str_len(&qlog->json, value, value_len); | |
444 | } | |
445 | ||
446 | void ossl_qlog_u64(QLOG *qlog, const char *name, uint64_t value) | |
447 | { | |
448 | if (name != NULL) | |
449 | ossl_json_key(&qlog->json, name); | |
450 | ||
451 | ossl_json_u64(&qlog->json, value); | |
452 | } | |
453 | ||
454 | void ossl_qlog_i64(QLOG *qlog, const char *name, int64_t value) | |
455 | { | |
456 | if (name != NULL) | |
457 | ossl_json_key(&qlog->json, name); | |
458 | ||
459 | ossl_json_i64(&qlog->json, value); | |
460 | } | |
461 | ||
462 | void ossl_qlog_bool(QLOG *qlog, const char *name, int value) | |
463 | { | |
464 | if (name != NULL) | |
465 | ossl_json_key(&qlog->json, name); | |
466 | ||
467 | ossl_json_bool(&qlog->json, value); | |
468 | } | |
469 | ||
470 | void ossl_qlog_bin(QLOG *qlog, const char *name, | |
471 | const void *value, size_t value_len) | |
472 | { | |
473 | if (name != NULL) | |
474 | ossl_json_key(&qlog->json, name); | |
475 | ||
476 | ossl_json_str_hex(&qlog->json, value, value_len); | |
477 | } | |
478 | ||
479 | /* | |
480 | * Filter Parsing | |
481 | * ============== | |
482 | */ | |
483 | struct lexer { | |
484 | const char *p, *term_end, *end; | |
485 | }; | |
486 | ||
487 | static ossl_inline int is_term_sep_ws(char c) | |
488 | { | |
489 | return c == ' ' || c == '\r' || c == '\n' || c == '\t'; | |
490 | } | |
491 | ||
492 | static ossl_inline int is_name_char(char c) | |
493 | { | |
494 | return (c >= 'a' && c <= 'z') | |
495 | || (c >= 'A' && c <= 'Z') | |
496 | || c == '_' || c == '-'; | |
497 | } | |
498 | ||
499 | static int lex_init(struct lexer *lex, const char *in, size_t in_len) | |
500 | { | |
501 | if (in == NULL) | |
502 | return 0; | |
503 | ||
504 | lex->p = in; | |
505 | lex->term_end = in; | |
506 | lex->end = in + in_len; | |
507 | return 1; | |
508 | } | |
509 | ||
510 | static int lex_do(struct lexer *lex) | |
511 | { | |
512 | const char *p = lex->term_end, *end = lex->end, *term_end; | |
513 | ||
514 | for (; is_term_sep_ws(*p) && p < end; ++p); | |
515 | ||
516 | if (p == end) { | |
517 | lex->p = end; | |
518 | lex->term_end = end; | |
519 | return 0; | |
520 | } | |
521 | ||
522 | for (term_end = p; !is_term_sep_ws(*term_end) && term_end < end; ++term_end); | |
523 | ||
524 | lex->p = p; | |
525 | lex->term_end = term_end; | |
526 | return 1; | |
527 | } | |
528 | ||
529 | static int lex_eot(struct lexer *lex) | |
530 | { | |
531 | return lex->p == lex->term_end; | |
532 | } | |
533 | ||
534 | static int lex_peek_char(struct lexer *lex) | |
535 | { | |
536 | return lex_eot(lex) ? -1 : *lex->p; | |
537 | } | |
538 | ||
539 | static int lex_skip_char(struct lexer *lex) | |
540 | { | |
541 | if (lex_eot(lex)) | |
542 | return 0; | |
543 | ||
544 | ++lex->p; | |
545 | return 1; | |
546 | } | |
547 | ||
548 | static int lex_match(struct lexer *lex, const char *s, size_t s_len) | |
549 | { | |
550 | if ((size_t)(lex->term_end - lex->p) != s_len) | |
551 | return 0; | |
552 | ||
553 | if (memcmp(lex->p, s, s_len)) | |
554 | return 0; | |
555 | ||
556 | return 1; | |
557 | } | |
558 | ||
559 | static void lex_get_rest(struct lexer *lex, const char **str, size_t *str_l) | |
560 | { | |
561 | *str = lex->p; | |
562 | *str_l = lex->term_end - lex->p; | |
563 | } | |
564 | ||
565 | static int lex_extract_to(struct lexer *lex, char c, | |
566 | const char **str, size_t *str_l) | |
567 | { | |
568 | const char *p = lex->p, *term_end = lex->term_end, *s; | |
569 | ||
570 | for (s = p; s < term_end && *s != c; ++s); | |
571 | if (s == term_end) | |
572 | return 0; | |
573 | ||
574 | *str = p; | |
575 | *str_l = term_end - s; | |
576 | lex->p = ++s; | |
577 | return 1; | |
578 | } | |
579 | ||
580 | static int ossl_unused filter_match_event(const char *cat, size_t cat_l, | |
581 | const char *event, size_t event_l, | |
582 | const char *expect_cat, | |
583 | const char *expect_event) | |
584 | { | |
585 | size_t expect_cat_l = strlen(expect_cat); | |
586 | size_t expect_event_l = strlen(expect_event); | |
587 | ||
588 | if ((cat != NULL && cat_l != expect_cat_l) | |
589 | || (event != NULL && event_l != expect_event_l) | |
590 | || (cat != NULL && memcmp(cat, expect_cat, expect_cat_l)) | |
591 | || (event != NULL && memcmp(event, expect_event, expect_event_l))) | |
592 | return 0; | |
593 | ||
594 | return 1; | |
595 | } | |
596 | ||
597 | /* | |
598 | * enabled: event enablement bitmask Array of size NUM_ENABLED_W. | |
599 | * add: 1 to enable an event, 0 to disable. | |
600 | * cat: Category name/length. Not necessarily zero terminated. | |
601 | * NULL to match any. | |
602 | * event: Event name/length. Not necessarily zero terminated. | |
603 | * NULL to match any. | |
604 | */ | |
605 | static void filter_apply(size_t *enabled, int add, | |
606 | const char *cat, size_t cat_l, | |
607 | const char *event, size_t event_l) | |
608 | { | |
609 | /* Find events which match the given filters. */ | |
610 | # define QLOG_EVENT(e_cat, e_name) \ | |
611 | if (filter_match_event(cat, cat_l, event, event_l, \ | |
612 | #e_cat, #e_name)) \ | |
613 | bit_set(enabled, QLOG_EVENT_TYPE_##e_cat##_##e_name, add); | |
614 | # include "internal/qlog_events.h" | |
615 | # undef QLOG_EVENT | |
616 | } | |
617 | ||
618 | static int lex_fail(struct lexer *lex, const char *msg) | |
619 | { | |
29bd1e2d HL |
620 | /* |
621 | * TODO(QLOG): Determine how to print log messages about bad filter strings | |
622 | */ | |
00b27f33 HL |
623 | lex->p = lex->term_end = lex->end; |
624 | return 0; | |
625 | } | |
626 | ||
627 | static int validate_name(const char **p, size_t *l) | |
628 | { | |
629 | const char *p_ = *p; | |
630 | size_t i, l_ = *l; | |
631 | ||
632 | if (l_ == 1 && *p_ == '*') { | |
633 | *p = NULL; | |
634 | *l = 0; | |
635 | return 1; | |
636 | } | |
637 | ||
638 | if (l_ == 0) | |
639 | return 0; | |
640 | ||
641 | for (i = 0; i < l_; ++i) | |
642 | if (!is_name_char(p_[i])) | |
643 | return 0; | |
644 | ||
645 | return 1; | |
646 | } | |
647 | ||
648 | int ossl_qlog_set_filter(QLOG *qlog, const char *filter) | |
649 | { | |
650 | struct lexer lex = {0}; | |
651 | char c; | |
652 | const char *cat, *event; | |
653 | size_t cat_l, event_l, enabled[NUM_ENABLED_W]; | |
654 | int add; | |
655 | ||
656 | memcpy(enabled, qlog->enabled, sizeof(enabled)); | |
657 | ||
658 | if (!lex_init(&lex, filter, strlen(filter))) | |
659 | return 0; | |
660 | ||
661 | while (lex_do(&lex)) { | |
662 | c = lex_peek_char(&lex); | |
663 | if (c == '+' || c == '-') { | |
664 | add = (c == '+'); | |
665 | lex_skip_char(&lex); | |
666 | ||
667 | c = lex_peek_char(&lex); | |
668 | if (!is_name_char(c) && c != '*') | |
669 | return lex_fail(&lex, "expected alphanumeric name or '*'" | |
670 | " after +/-"); | |
671 | } else if (!is_name_char(c) && c != '*') { | |
672 | return lex_fail(&lex, "expected +/- or alphanumeric name or '*'"); | |
673 | } else { | |
674 | add = 1; | |
675 | } | |
676 | ||
677 | if (lex_match(&lex, "*", 1)) { | |
678 | filter_apply(enabled, add, NULL, 0, NULL, 0); | |
679 | continue; | |
680 | } | |
681 | ||
682 | if (!lex_extract_to(&lex, ':', &cat, &cat_l)) | |
683 | return lex_fail(&lex, "expected ':' after category name"); | |
684 | ||
685 | lex_get_rest(&lex, &event, &event_l); | |
686 | if (!validate_name(&cat, &cat_l)) | |
687 | return lex_fail(&lex, "expected alphanumeric category name or '*'"); | |
688 | if (!validate_name(&event, &event_l)) | |
689 | return lex_fail(&lex, "expected alphanumeric event name or '*'"); | |
690 | ||
691 | filter_apply(enabled, add, cat, cat_l, event, event_l); | |
692 | } | |
693 | ||
694 | memcpy(qlog->enabled, enabled, sizeof(enabled)); | |
695 | return 1; | |
696 | } |