suricata
detect-tls.c
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1 /*
2  * Copyright (C) 2011-2012 ANSSI
3  * Copyright (C) 2022 Open Information Security Foundation
4  * All rights reserved.
5  *
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7  * modification, are permitted provided that the following conditions
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10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
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17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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27  */
28 
29 /**
30  * \file
31  *
32  * \author Pierre Chifflier <pierre.chifflier@ssi.gouv.fr>
33  *
34  * Implements the tls.* keywords
35  */
36 
37 #include "suricata-common.h"
38 #include "threads.h"
39 #include "decode.h"
40 
41 #include "detect.h"
42 #include "detect-parse.h"
43 #include "detect-content.h"
44 
45 #include "detect-engine.h"
46 #include "detect-engine-mpm.h"
47 #include "detect-engine-state.h"
48 
49 #include "flow.h"
50 #include "flow-var.h"
51 #include "flow-util.h"
52 
53 #include "util-debug.h"
54 #include "util-unittest.h"
55 #include "util-unittest-helper.h"
56 
57 #include "app-layer.h"
58 
59 #include "app-layer-ssl.h"
60 #include "detect-tls.h"
62 
63 #include "stream-tcp.h"
64 
65 /**
66  * \brief Regex for parsing "id" option, matching number or "number"
67  */
68 
69 #define PARSE_REGEX "^([A-z0-9\\s\\-\\.=,\\*@]+|\"[A-z0-9\\s\\-\\.=,\\*@]+\")\\s*$"
70 #define PARSE_REGEX_FINGERPRINT "^([A-z0-9\\:\\*]+|\"[A-z0-9\\:\\* ]+\")\\s*$"
71 
72 static DetectParseRegex subject_parse_regex;
73 static DetectParseRegex issuerdn_parse_regex;
74 static DetectParseRegex fingerprint_parse_regex;
75 
76 static int DetectTlsSubjectMatch (DetectEngineThreadCtx *,
77  Flow *, uint8_t, void *, void *,
78  const Signature *, const SigMatchCtx *);
79 static int DetectTlsSubjectSetup (DetectEngineCtx *, Signature *, const char *);
80 static void DetectTlsSubjectFree(DetectEngineCtx *, void *);
81 
82 static int DetectTlsIssuerDNMatch (DetectEngineThreadCtx *,
83  Flow *, uint8_t, void *, void *,
84  const Signature *, const SigMatchCtx *);
85 static int DetectTlsIssuerDNSetup (DetectEngineCtx *, Signature *, const char *);
86 static void DetectTlsIssuerDNFree(DetectEngineCtx *, void *);
87 
88 static int DetectTlsFingerprintSetup (DetectEngineCtx *, Signature *, const char *);
89 static void DetectTlsFingerprintFree(DetectEngineCtx *, void *);
90 
91 static int DetectTlsStoreSetup (DetectEngineCtx *, Signature *, const char *);
92 static int DetectTlsStorePostMatch (DetectEngineThreadCtx *det_ctx,
93  Packet *, const Signature *s, const SigMatchCtx *unused);
94 
95 static int g_tls_cert_list_id = 0;
96 static int g_tls_cert_fingerprint_list_id = 0;
97 
98 /**
99  * \brief Registration function for keyword: tls.version
100  */
101 void DetectTlsRegister (void)
102 {
103  sigmatch_table[DETECT_AL_TLS_SUBJECT].name = "tls.subject";
104  sigmatch_table[DETECT_AL_TLS_SUBJECT].desc = "match TLS/SSL certificate Subject field";
105  sigmatch_table[DETECT_AL_TLS_SUBJECT].url = "/rules/tls-keywords.html#tls-subject";
106  sigmatch_table[DETECT_AL_TLS_SUBJECT].AppLayerTxMatch = DetectTlsSubjectMatch;
107  sigmatch_table[DETECT_AL_TLS_SUBJECT].Setup = DetectTlsSubjectSetup;
108  sigmatch_table[DETECT_AL_TLS_SUBJECT].Free = DetectTlsSubjectFree;
111 
112  sigmatch_table[DETECT_AL_TLS_ISSUERDN].name = "tls.issuerdn";
113  sigmatch_table[DETECT_AL_TLS_ISSUERDN].desc = "match TLS/SSL certificate IssuerDN field";
114  sigmatch_table[DETECT_AL_TLS_ISSUERDN].url = "/rules/tls-keywords.html#tls-issuerdn";
115  sigmatch_table[DETECT_AL_TLS_ISSUERDN].AppLayerTxMatch = DetectTlsIssuerDNMatch;
116  sigmatch_table[DETECT_AL_TLS_ISSUERDN].Setup = DetectTlsIssuerDNSetup;
117  sigmatch_table[DETECT_AL_TLS_ISSUERDN].Free = DetectTlsIssuerDNFree;
120 
121  sigmatch_table[DETECT_AL_TLS_FINGERPRINT].name = "tls.fingerprint";
122  sigmatch_table[DETECT_AL_TLS_FINGERPRINT].desc = "match TLS/SSL certificate SHA1 fingerprint";
123  sigmatch_table[DETECT_AL_TLS_FINGERPRINT].url = "/rules/tls-keywords.html#tls-fingerprint";
124  sigmatch_table[DETECT_AL_TLS_FINGERPRINT].Setup = DetectTlsFingerprintSetup;
125  sigmatch_table[DETECT_AL_TLS_FINGERPRINT].Free = DetectTlsFingerprintFree;
128 
129  sigmatch_table[DETECT_AL_TLS_STORE].name = "tls_store";
131  sigmatch_table[DETECT_AL_TLS_STORE].desc = "store TLS/SSL certificate on disk";
132  sigmatch_table[DETECT_AL_TLS_STORE].url = "/rules/tls-keywords.html#tls-store";
133  sigmatch_table[DETECT_AL_TLS_STORE].Match = DetectTlsStorePostMatch;
134  sigmatch_table[DETECT_AL_TLS_STORE].Setup = DetectTlsStoreSetup;
136 
137  DetectSetupParseRegexes(PARSE_REGEX, &subject_parse_regex);
138  DetectSetupParseRegexes(PARSE_REGEX, &issuerdn_parse_regex);
139  DetectSetupParseRegexes(PARSE_REGEX_FINGERPRINT, &fingerprint_parse_regex);
140 
141  g_tls_cert_list_id = DetectBufferTypeRegister("tls_cert");
142  g_tls_cert_fingerprint_list_id = DetectBufferTypeRegister("tls.cert_fingerprint");
143 
146 
149 }
150 
151 /**
152  * \brief match the specified Subject on a tls session
153  *
154  * \param t pointer to thread vars
155  * \param det_ctx pointer to the pattern matcher thread
156  * \param p pointer to the current packet
157  * \param m pointer to the sigmatch that we will cast into DetectTlsData
158  *
159  * \retval 0 no match
160  * \retval 1 match
161  */
162 static int DetectTlsSubjectMatch (DetectEngineThreadCtx *det_ctx,
163  Flow *f, uint8_t flags, void *state, void *txv,
164  const Signature *s, const SigMatchCtx *m)
165 {
166  SCEnter();
167 
168  const DetectTlsData *tls_data = (const DetectTlsData *)m;
169  SSLState *ssl_state = (SSLState *)state;
170  if (ssl_state == NULL) {
171  SCLogDebug("no tls state, no match");
172  SCReturnInt(0);
173  }
174 
175  int ret = 0;
176 
177  SSLStateConnp *connp = NULL;
178  if (flags & STREAM_TOSERVER) {
179  connp = &ssl_state->client_connp;
180  } else {
181  connp = &ssl_state->server_connp;
182  }
183 
184  if (connp->cert0_subject != NULL) {
185  SCLogDebug("TLS: Subject is [%s], looking for [%s]\n",
186  connp->cert0_subject, tls_data->subject);
187 
188  if (strstr(connp->cert0_subject, tls_data->subject) != NULL) {
189  if (tls_data->flags & DETECT_CONTENT_NEGATED) {
190  ret = 0;
191  } else {
192  ret = 1;
193  }
194  } else {
195  if (tls_data->flags & DETECT_CONTENT_NEGATED) {
196  ret = 1;
197  } else {
198  ret = 0;
199  }
200  }
201  } else {
202  ret = 0;
203  }
204 
205  SCReturnInt(ret);
206 }
207 
208 /**
209  * \brief This function is used to parse IPV4 ip_id passed via keyword: "id"
210  *
211  * \param de_ctx Pointer to the detection engine context
212  * \param str Pointer to the user provided id option
213  *
214  * \retval id_d pointer to DetectTlsData on success
215  * \retval NULL on failure
216  */
217 static DetectTlsData *DetectTlsSubjectParse (DetectEngineCtx *de_ctx, const char *str, bool negate)
218 {
219  DetectTlsData *tls = NULL;
220  size_t pcre2_len;
221  const char *str_ptr;
222  char *orig = NULL;
223  char *tmp_str;
224  uint32_t flag = 0;
225 
226  pcre2_match_data *match = NULL;
227  int ret = DetectParsePcreExec(&subject_parse_regex, &match, str, 0, 0);
228  if (ret != 2) {
229  SCLogError("invalid tls.subject option");
230  goto error;
231  }
232 
233  if (negate)
234  flag = DETECT_CONTENT_NEGATED;
235 
236  int res = pcre2_substring_get_bynumber(match, 1, (PCRE2_UCHAR8 **)&str_ptr, &pcre2_len);
237  if (res < 0) {
238  SCLogError("pcre2_substring_get_bynumber failed");
239  goto error;
240  }
241 
242  /* We have a correct id option */
243  tls = SCMalloc(sizeof(DetectTlsData));
244  if (unlikely(tls == NULL))
245  goto error;
246  tls->subject = NULL;
247  tls->flags = flag;
248 
249  orig = SCStrdup((char*)str_ptr);
250  if (unlikely(orig == NULL)) {
251  goto error;
252  }
253  pcre2_substring_free((PCRE2_UCHAR *)str_ptr);
254 
255  tmp_str=orig;
256 
257  /* Let's see if we need to escape "'s */
258  if (tmp_str[0] == '"') {
259  tmp_str[strlen(tmp_str) - 1] = '\0';
260  tmp_str += 1;
261  }
262 
263  tls->subject = SCStrdup(tmp_str);
264  if (unlikely(tls->subject == NULL)) {
265  goto error;
266  }
267 
268  pcre2_match_data_free(match);
269  SCFree(orig);
270 
271  SCLogDebug("will look for TLS subject %s", tls->subject);
272 
273  return tls;
274 
275 error:
276  if (match) {
277  pcre2_match_data_free(match);
278  }
279  if (orig != NULL)
280  SCFree(orig);
281  if (tls != NULL)
282  DetectTlsSubjectFree(de_ctx, tls);
283  return NULL;
284 
285 }
286 
287 /**
288  * \brief this function is used to add the parsed "id" option
289  * \brief into the current signature
290  *
291  * \param de_ctx pointer to the Detection Engine Context
292  * \param s pointer to the Current Signature
293  * \param idstr pointer to the user provided "id" option
294  *
295  * \retval 0 on Success
296  * \retval -1 on Failure
297  */
298 static int DetectTlsSubjectSetup (DetectEngineCtx *de_ctx, Signature *s, const char *str)
299 {
300  DetectTlsData *tls = NULL;
301  SigMatch *sm = NULL;
302 
304  return -1;
305 
306  tls = DetectTlsSubjectParse(de_ctx, str, s->init_data->negated);
307  if (tls == NULL)
308  goto error;
309 
310  /* Okay so far so good, lets get this into a SigMatch
311  * and put it in the Signature. */
312  sm = SigMatchAlloc();
313  if (sm == NULL)
314  goto error;
315 
317  sm->ctx = (void *)tls;
318 
319  SigMatchAppendSMToList(s, sm, g_tls_cert_list_id);
320  return 0;
321 
322 error:
323  if (tls != NULL)
324  DetectTlsSubjectFree(de_ctx, tls);
325  if (sm != NULL)
326  SCFree(sm);
327  return -1;
328 
329 }
330 
331 /**
332  * \brief this function will free memory associated with DetectTlsData
333  *
334  * \param id_d pointer to DetectTlsData
335  */
336 static void DetectTlsSubjectFree(DetectEngineCtx *de_ctx, void *ptr)
337 {
338  DetectTlsData *id_d = (DetectTlsData *)ptr;
339  if (ptr == NULL)
340  return;
341  if (id_d->subject != NULL)
342  SCFree(id_d->subject);
343  SCFree(id_d);
344 }
345 
346 /**
347  * \brief match the specified IssuerDN on a tls session
348  *
349  * \param t pointer to thread vars
350  * \param det_ctx pointer to the pattern matcher thread
351  * \param p pointer to the current packet
352  * \param m pointer to the sigmatch that we will cast into DetectTlsData
353  *
354  * \retval 0 no match
355  * \retval 1 match
356  */
357 static int DetectTlsIssuerDNMatch (DetectEngineThreadCtx *det_ctx,
358  Flow *f, uint8_t flags, void *state, void *txv,
359  const Signature *s, const SigMatchCtx *m)
360 {
361  SCEnter();
362 
363  const DetectTlsData *tls_data = (const DetectTlsData *)m;
364  SSLState *ssl_state = (SSLState *)state;
365  if (ssl_state == NULL) {
366  SCLogDebug("no tls state, no match");
367  SCReturnInt(0);
368  }
369 
370  int ret = 0;
371 
372  SSLStateConnp *connp = NULL;
373  if (flags & STREAM_TOSERVER) {
374  connp = &ssl_state->client_connp;
375  } else {
376  connp = &ssl_state->server_connp;
377  }
378 
379  if (connp->cert0_issuerdn != NULL) {
380  SCLogDebug("TLS: IssuerDN is [%s], looking for [%s]\n",
381  connp->cert0_issuerdn, tls_data->issuerdn);
382 
383  if (strstr(connp->cert0_issuerdn, tls_data->issuerdn) != NULL) {
384  if (tls_data->flags & DETECT_CONTENT_NEGATED) {
385  ret = 0;
386  } else {
387  ret = 1;
388  }
389  } else {
390  if (tls_data->flags & DETECT_CONTENT_NEGATED) {
391  ret = 1;
392  } else {
393  ret = 0;
394  }
395  }
396  } else {
397  ret = 0;
398  }
399 
400  SCReturnInt(ret);
401 }
402 
403 /**
404  * \brief This function is used to parse IPV4 ip_id passed via keyword: "id"
405  *
406  * \param de_ctx Pointer to the detection engine context
407  * \param str Pointer to the user provided id option
408  *
409  * \retval id_d pointer to DetectTlsData on success
410  * \retval NULL on failure
411  */
412 static DetectTlsData *DetectTlsIssuerDNParse(DetectEngineCtx *de_ctx, const char *str, bool negate)
413 {
414  DetectTlsData *tls = NULL;
415  size_t pcre2_len;
416  const char *str_ptr;
417  char *orig = NULL;
418  char *tmp_str;
419  uint32_t flag = 0;
420 
421  pcre2_match_data *match = NULL;
422  int ret = DetectParsePcreExec(&issuerdn_parse_regex, &match, str, 0, 0);
423  if (ret != 2) {
424  SCLogError("invalid tls.issuerdn option");
425  goto error;
426  }
427 
428  if (negate)
429  flag = DETECT_CONTENT_NEGATED;
430 
431  int res = pcre2_substring_get_bynumber(match, 1, (PCRE2_UCHAR8 **)&str_ptr, &pcre2_len);
432  if (res < 0) {
433  SCLogError("pcre2_substring_get_bynumber failed");
434  goto error;
435  }
436 
437  /* We have a correct id option */
438  tls = SCMalloc(sizeof(DetectTlsData));
439  if (unlikely(tls == NULL))
440  goto error;
441  tls->issuerdn = NULL;
442  tls->flags = flag;
443 
444  orig = SCStrdup((char*)str_ptr);
445  if (unlikely(orig == NULL)) {
446  goto error;
447  }
448  pcre2_substring_free((PCRE2_UCHAR *)str_ptr);
449 
450  tmp_str=orig;
451 
452  /* Let's see if we need to escape "'s */
453  if (tmp_str[0] == '"')
454  {
455  tmp_str[strlen(tmp_str) - 1] = '\0';
456  tmp_str += 1;
457  }
458 
459  tls->issuerdn = SCStrdup(tmp_str);
460  if (unlikely(tls->issuerdn == NULL)) {
461  goto error;
462  }
463 
464  SCFree(orig);
465 
466  pcre2_match_data_free(match);
467  SCLogDebug("Will look for TLS issuerdn %s", tls->issuerdn);
468 
469  return tls;
470 
471 error:
472  if (match) {
473  pcre2_match_data_free(match);
474  }
475  if (orig != NULL)
476  SCFree(orig);
477  if (tls != NULL)
478  DetectTlsIssuerDNFree(de_ctx, tls);
479  return NULL;
480 
481 }
482 
483 /**
484  * \brief this function is used to add the parsed "id" option
485  * \brief into the current signature
486  *
487  * \param de_ctx pointer to the Detection Engine Context
488  * \param s pointer to the Current Signature
489  * \param idstr pointer to the user provided "id" option
490  *
491  * \retval 0 on Success
492  * \retval -1 on Failure
493  */
494 static int DetectTlsIssuerDNSetup (DetectEngineCtx *de_ctx, Signature *s, const char *str)
495 {
496  DetectTlsData *tls = NULL;
497  SigMatch *sm = NULL;
498 
500  return -1;
501 
502  tls = DetectTlsIssuerDNParse(de_ctx, str, s->init_data->negated);
503  if (tls == NULL)
504  goto error;
505 
506  /* Okay so far so good, lets get this into a SigMatch
507  * and put it in the Signature. */
508  sm = SigMatchAlloc();
509  if (sm == NULL)
510  goto error;
511 
513  sm->ctx = (void *)tls;
514 
515  SigMatchAppendSMToList(s, sm, g_tls_cert_list_id);
516  return 0;
517 
518 error:
519  if (tls != NULL)
520  DetectTlsIssuerDNFree(de_ctx, tls);
521  if (sm != NULL)
522  SCFree(sm);
523  return -1;
524 
525 }
526 
527 /**
528  * \brief this function will free memory associated with DetectTlsData
529  *
530  * \param id_d pointer to DetectTlsData
531  */
532 static void DetectTlsIssuerDNFree(DetectEngineCtx *de_ctx, void *ptr)
533 {
534  DetectTlsData *id_d = (DetectTlsData *)ptr;
535  SCFree(id_d->issuerdn);
536  SCFree(id_d);
537 }
538 
539 /**
540  * \brief This function is used to parse fingerprint passed via keyword: "fingerprint"
541  *
542  * \param de_ctx Pointer to the detection engine context
543  * \param str Pointer to the user provided fingerprint option
544  *
545  * \retval pointer to DetectTlsData on success
546  * \retval NULL on failure
547  */
548 
549 /**
550  * \brief this function is used to add the parsed "fingerprint" option
551  * \brief into the current signature
552  *
553  * \param de_ctx pointer to the Detection Engine Context
554  * \param s pointer to the Current Signature
555  * \param id pointer to the user provided "fingerprint" option
556  *
557  * \retval 0 on Success
558  * \retval -1 on Failure
559  */
560 static int DetectTlsFingerprintSetup (DetectEngineCtx *de_ctx, Signature *s, const char *str)
561 {
562  if (DetectContentSetup(de_ctx, s, str) < 0) {
563  return -1;
564  }
565 
567  g_tls_cert_fingerprint_list_id, ALPROTO_TLS) < 0)
568  return -1;
569 
570  return 0;
571 }
572 
573 /**
574  * \brief this function will free memory associated with DetectTlsData
575  *
576  * \param pointer to DetectTlsData
577  */
578 static void DetectTlsFingerprintFree(DetectEngineCtx *de_ctx, void *ptr)
579 {
580  DetectTlsData *id_d = (DetectTlsData *)ptr;
581  SCFree(id_d);
582 }
583 
584 /**
585  * \brief this function is used to add the parsed "store" option
586  * \brief into the current signature
587  *
588  * \param de_ctx pointer to the Detection Engine Context
589  * \param s pointer to the Current Signature
590  * \param idstr pointer to the user provided "store" option
591  *
592  * \retval 0 on Success
593  * \retval -1 on Failure
594  */
595 static int DetectTlsStoreSetup (DetectEngineCtx *de_ctx, Signature *s, const char *str)
596 {
597  SigMatch *sm = NULL;
598 
600  return -1;
601 
602  sm = SigMatchAlloc();
603  if (sm == NULL)
604  return -1;
605 
607  s->flags |= SIG_FLAG_TLSSTORE;
608 
610  return 0;
611 }
612 
613 /** \warning modifies Flow::alstate */
614 static int DetectTlsStorePostMatch (DetectEngineThreadCtx *det_ctx,
615  Packet *p, const Signature *s, const SigMatchCtx *unused)
616 {
617  SCEnter();
618 
619  if (p->flow == NULL)
620  return 0;
621 
622  SSLState *ssl_state = FlowGetAppState(p->flow);
623  if (ssl_state == NULL) {
624  SCLogDebug("no tls state, no match");
625  SCReturnInt(0);
626  }
627 
628  SSLStateConnp *connp;
629 
630  if (p->flow->flags & STREAM_TOSERVER) {
631  connp = &ssl_state->client_connp;
632  } else {
633  connp = &ssl_state->server_connp;
634  }
635 
636  connp->cert_log_flag |= SSL_TLS_LOG_PEM;
637  SCReturnInt(1);
638 }
SigTableElmt_::url
const char * url
Definition: detect.h:1287
SSLStateConnp_::cert0_subject
char * cert0_subject
Definition: app-layer-ssl.h:248
DetectSignatureSetAppProto
int DetectSignatureSetAppProto(Signature *s, AppProto alproto)
Definition: detect-parse.c:1703
SSLState_
SSLv[2.0|3.[0|1|2|3]] state structure.
Definition: app-layer-ssl.h:284
detect-content.h
detect-engine.h
SigMatchAppendSMToList
void SigMatchAppendSMToList(Signature *s, SigMatch *new, const int list)
Append a SigMatch to the list type.
Definition: detect-parse.c:437
SigTableElmt_::desc
const char * desc
Definition: detect.h:1286
PARSE_REGEX
#define PARSE_REGEX
Regex for parsing "id" option, matching number or "number".
Definition: detect-tls.c:69
TLS_STATE_CERT_READY
@ TLS_STATE_CERT_READY
Definition: app-layer-ssl.h:78
SigTableElmt_::Free
void(* Free)(DetectEngineCtx *, void *)
Definition: detect.h:1274
flow-util.h
DetectParseRegex
Definition: detect-parse.h:62
SigTableElmt_::name
const char * name
Definition: detect.h:1284
stream-tcp.h
unlikely
#define unlikely(expr)
Definition: util-optimize.h:35
detect-tls-cert-fingerprint.h
SSLState_::client_connp
SSLStateConnp client_connp
Definition: app-layer-ssl.h:302
ALPROTO_TLS
@ ALPROTO_TLS
Definition: app-layer-protos.h:33
SCLogDebug
#define SCLogDebug(...)
Definition: util-debug.h:269
DetectTlsData_::issuerdn
char * issuerdn
Definition: detect-tls.h:41
SSLState_::server_connp
SSLStateConnp server_connp
Definition: app-layer-ssl.h:303
SSLStateConnp_
Definition: app-layer-ssl.h:228
threads.h
Flow_
Flow data structure.
Definition: flow.h:347
SigTableElmt_::flags
uint16_t flags
Definition: detect.h:1278
DetectEngineCtx_
main detection engine ctx
Definition: detect.h:826
SigTableElmt_::AppLayerTxMatch
int(* AppLayerTxMatch)(DetectEngineThreadCtx *, Flow *, uint8_t flags, void *alstate, void *txv, const Signature *, const SigMatchCtx *)
Definition: detect.h:1255
DetectTlsData_
Definition: detect-tls.h:37
DetectParsePcreExec
int DetectParsePcreExec(DetectParseRegex *parse_regex, pcre2_match_data **match, const char *str, int start_offset, int options)
Definition: detect-parse.c:2623
m
SCMutex m
Definition: flow-hash.h:6
DetectTlsData_::flags
uint32_t flags
Definition: detect-tls.h:39
SIG_FLAG_TOCLIENT
#define SIG_FLAG_TOCLIENT
Definition: detect.h:256
SigTableElmt_::Setup
int(* Setup)(DetectEngineCtx *, Signature *, const char *)
Definition: detect.h:1269
util-unittest.h
SSLStateConnp_::cert0_issuerdn
char * cert0_issuerdn
Definition: app-layer-ssl.h:249
util-unittest-helper.h
DETECT_AL_TLS_CERT_SUBJECT
@ DETECT_AL_TLS_CERT_SUBJECT
Definition: detect-engine-register.h:229
SIGMATCH_QUOTES_MANDATORY
#define SIGMATCH_QUOTES_MANDATORY
Definition: detect.h:1482
DETECT_SM_LIST_POSTMATCH
@ DETECT_SM_LIST_POSTMATCH
Definition: detect.h:118
DetectTlsData_::subject
char * subject
Definition: detect-tls.h:40
PARSE_REGEX_FINGERPRINT
#define PARSE_REGEX_FINGERPRINT
Definition: detect-tls.c:70
SIG_FLAG_TOSERVER
#define SIG_FLAG_TOSERVER
Definition: detect.h:255
decode.h
util-debug.h
de_ctx
DetectEngineCtx * de_ctx
Definition: fuzz_siginit.c:17
DetectContentSetup
int DetectContentSetup(DetectEngineCtx *de_ctx, Signature *s, const char *contentstr)
Function to setup a content pattern.
Definition: detect-content.c:328
DetectEngineThreadCtx_
Definition: detect.h:1074
DETECT_AL_TLS_CERT_ISSUER
@ DETECT_AL_TLS_CERT_ISSUER
Definition: detect-engine-register.h:228
DetectSetupParseRegexes
void DetectSetupParseRegexes(const char *parse_str, DetectParseRegex *detect_parse)
Definition: detect-parse.c:2747
SCEnter
#define SCEnter(...)
Definition: util-debug.h:271
DETECT_AL_TLS_SUBJECT
@ DETECT_AL_TLS_SUBJECT
Definition: detect-engine-register.h:115
detect-engine-mpm.h
detect.h
DETECT_CONTENT_NEGATED
#define DETECT_CONTENT_NEGATED
Definition: detect-content.h:40
SigTableElmt_::alternative
uint16_t alternative
Definition: detect.h:1282
SigMatch_::ctx
SigMatchCtx * ctx
Definition: detect.h:343
Signature_::flags
uint32_t flags
Definition: detect.h:582
DetectEngineContentModifierBufferSetup
int DetectEngineContentModifierBufferSetup(DetectEngineCtx *de_ctx, Signature *s, const char *arg, int sm_type, int sm_list, AppProto alproto)
Definition: detect-parse.c:207
Packet_
Definition: decode.h:430
DetectAppLayerInspectEngineRegister2
void DetectAppLayerInspectEngineRegister2(const char *name, AppProto alproto, uint32_t dir, int progress, InspectEngineFuncPtr2 Callback2, InspectionBufferGetDataPtr GetData)
register inspect engine at start up time
Definition: detect-engine.c:216
SIGMATCH_HANDLE_NEGATION
#define SIGMATCH_HANDLE_NEGATION
Definition: detect.h:1486
Signature_::init_data
SignatureInitData * init_data
Definition: detect.h:653
detect-engine-state.h
Data structures and function prototypes for keeping state for the detection engine.
SignatureInitData_::negated
bool negated
Definition: detect.h:528
SigTableElmt_::Match
int(* Match)(DetectEngineThreadCtx *, Packet *, const Signature *, const SigMatchCtx *)
Definition: detect.h:1252
SigMatchAlloc
SigMatch * SigMatchAlloc(void)
Definition: detect-parse.c:322
SigMatchCtx_
Used to start a pointer to SigMatch context Should never be dereferenced without casting to something...
Definition: detect.h:335
DETECT_AL_TLS_CERT_FINGERPRINT
@ DETECT_AL_TLS_CERT_FINGERPRINT
Definition: detect-engine-register.h:231
DetectTlsRegister
void DetectTlsRegister(void)
Registration function for keyword: tls.version.
Definition: detect-tls.c:101
Packet_::flow
struct Flow_ * flow
Definition: decode.h:469
DetectBufferTypeRegister
int DetectBufferTypeRegister(const char *name)
Definition: detect-engine.c:1060
flags
uint8_t flags
Definition: decode-gre.h:0
SigTableElmt_::alias
const char * alias
Definition: detect.h:1285
detect-tls.h
suricata-common.h
SigMatch_::type
uint16_t type
Definition: detect.h:341
sigmatch_table
SigTableElmt sigmatch_table[DETECT_TBLSIZE]
Definition: detect-parse.c:129
SCStrdup
#define SCStrdup(s)
Definition: util-mem.h:56
DetectEngineInspectGenericList
uint8_t DetectEngineInspectGenericList(DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx, const struct DetectEngineAppInspectionEngine_ *engine, const Signature *s, Flow *f, uint8_t flags, void *alstate, void *txv, uint64_t tx_id)
Do the content inspection & validation for a signature.
Definition: detect-engine.c:2122
SSL_TLS_LOG_PEM
#define SSL_TLS_LOG_PEM
Definition: app-layer-ssl.h:138
SCMalloc
#define SCMalloc(sz)
Definition: util-mem.h:47
str
#define str(s)
Definition: suricata-common.h:286
SCLogError
#define SCLogError(...)
Macro used to log ERROR messages.
Definition: util-debug.h:261
SCFree
#define SCFree(p)
Definition: util-mem.h:61
Flow_::flags
uint32_t flags
Definition: flow.h:417
detect-parse.h
Signature_
Signature container.
Definition: detect.h:581
SigMatch_
a single match condition for a signature
Definition: detect.h:340
SSLStateConnp_::cert_log_flag
uint32_t cert_log_flag
Definition: app-layer-ssl.h:265
DETECT_AL_TLS_STORE
@ DETECT_AL_TLS_STORE
Definition: detect-engine-register.h:122
DETECT_AL_TLS_FINGERPRINT
@ DETECT_AL_TLS_FINGERPRINT
Definition: detect-engine-register.h:121
SIGMATCH_NOOPT
#define SIGMATCH_NOOPT
Definition: detect.h:1466
SIG_FLAG_TLSSTORE
#define SIG_FLAG_TLSSTORE
Definition: detect.h:258
flow.h
SCReturnInt
#define SCReturnInt(x)
Definition: util-debug.h:275
flow-var.h
DETECT_AL_TLS_ISSUERDN
@ DETECT_AL_TLS_ISSUERDN
Definition: detect-engine-register.h:116
app-layer-ssl.h
app-layer.h