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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9  * 1. Redistributions of source code must retain the above copyright
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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15  * derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
19  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
20  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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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  int ret = 0, res = 0;
221  size_t pcre2_len;
222  const char *str_ptr;
223  char *orig = NULL;
224  char *tmp_str;
225  uint32_t flag = 0;
226 
227  ret = DetectParsePcreExec(&subject_parse_regex, 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  res = pcre2_substring_get_bynumber(
237  subject_parse_regex.match, 1, (PCRE2_UCHAR8 **)&str_ptr, &pcre2_len);
238  if (res < 0) {
239  SCLogError("pcre2_substring_get_bynumber failed");
240  goto error;
241  }
242 
243  /* We have a correct id option */
244  tls = SCMalloc(sizeof(DetectTlsData));
245  if (unlikely(tls == NULL))
246  goto error;
247  tls->subject = NULL;
248  tls->flags = flag;
249 
250  orig = SCStrdup((char*)str_ptr);
251  if (unlikely(orig == NULL)) {
252  goto error;
253  }
254  pcre2_substring_free((PCRE2_UCHAR *)str_ptr);
255 
256  tmp_str=orig;
257 
258  /* Let's see if we need to escape "'s */
259  if (tmp_str[0] == '"') {
260  tmp_str[strlen(tmp_str) - 1] = '\0';
261  tmp_str += 1;
262  }
263 
264  tls->subject = SCStrdup(tmp_str);
265  if (unlikely(tls->subject == NULL)) {
266  goto error;
267  }
268 
269  SCFree(orig);
270 
271  SCLogDebug("will look for TLS subject %s", tls->subject);
272 
273  return tls;
274 
275 error:
276  if (orig != NULL)
277  SCFree(orig);
278  if (tls != NULL)
279  DetectTlsSubjectFree(de_ctx, tls);
280  return NULL;
281 
282 }
283 
284 /**
285  * \brief this function is used to add the parsed "id" option
286  * \brief into the current signature
287  *
288  * \param de_ctx pointer to the Detection Engine Context
289  * \param s pointer to the Current Signature
290  * \param idstr pointer to the user provided "id" option
291  *
292  * \retval 0 on Success
293  * \retval -1 on Failure
294  */
295 static int DetectTlsSubjectSetup (DetectEngineCtx *de_ctx, Signature *s, const char *str)
296 {
297  DetectTlsData *tls = NULL;
298  SigMatch *sm = NULL;
299 
301  return -1;
302 
303  tls = DetectTlsSubjectParse(de_ctx, str, s->init_data->negated);
304  if (tls == NULL)
305  goto error;
306 
307  /* Okay so far so good, lets get this into a SigMatch
308  * and put it in the Signature. */
309  sm = SigMatchAlloc();
310  if (sm == NULL)
311  goto error;
312 
314  sm->ctx = (void *)tls;
315 
316  SigMatchAppendSMToList(s, sm, g_tls_cert_list_id);
317  return 0;
318 
319 error:
320  if (tls != NULL)
321  DetectTlsSubjectFree(de_ctx, tls);
322  if (sm != NULL)
323  SCFree(sm);
324  return -1;
325 
326 }
327 
328 /**
329  * \brief this function will free memory associated with DetectTlsData
330  *
331  * \param id_d pointer to DetectTlsData
332  */
333 static void DetectTlsSubjectFree(DetectEngineCtx *de_ctx, void *ptr)
334 {
335  DetectTlsData *id_d = (DetectTlsData *)ptr;
336  if (ptr == NULL)
337  return;
338  if (id_d->subject != NULL)
339  SCFree(id_d->subject);
340  SCFree(id_d);
341 }
342 
343 /**
344  * \brief match the specified IssuerDN on a tls session
345  *
346  * \param t pointer to thread vars
347  * \param det_ctx pointer to the pattern matcher thread
348  * \param p pointer to the current packet
349  * \param m pointer to the sigmatch that we will cast into DetectTlsData
350  *
351  * \retval 0 no match
352  * \retval 1 match
353  */
354 static int DetectTlsIssuerDNMatch (DetectEngineThreadCtx *det_ctx,
355  Flow *f, uint8_t flags, void *state, void *txv,
356  const Signature *s, const SigMatchCtx *m)
357 {
358  SCEnter();
359 
360  const DetectTlsData *tls_data = (const DetectTlsData *)m;
361  SSLState *ssl_state = (SSLState *)state;
362  if (ssl_state == NULL) {
363  SCLogDebug("no tls state, no match");
364  SCReturnInt(0);
365  }
366 
367  int ret = 0;
368 
369  SSLStateConnp *connp = NULL;
370  if (flags & STREAM_TOSERVER) {
371  connp = &ssl_state->client_connp;
372  } else {
373  connp = &ssl_state->server_connp;
374  }
375 
376  if (connp->cert0_issuerdn != NULL) {
377  SCLogDebug("TLS: IssuerDN is [%s], looking for [%s]\n",
378  connp->cert0_issuerdn, tls_data->issuerdn);
379 
380  if (strstr(connp->cert0_issuerdn, tls_data->issuerdn) != NULL) {
381  if (tls_data->flags & DETECT_CONTENT_NEGATED) {
382  ret = 0;
383  } else {
384  ret = 1;
385  }
386  } else {
387  if (tls_data->flags & DETECT_CONTENT_NEGATED) {
388  ret = 1;
389  } else {
390  ret = 0;
391  }
392  }
393  } else {
394  ret = 0;
395  }
396 
397  SCReturnInt(ret);
398 }
399 
400 /**
401  * \brief This function is used to parse IPV4 ip_id passed via keyword: "id"
402  *
403  * \param de_ctx Pointer to the detection engine context
404  * \param str Pointer to the user provided id option
405  *
406  * \retval id_d pointer to DetectTlsData on success
407  * \retval NULL on failure
408  */
409 static DetectTlsData *DetectTlsIssuerDNParse(DetectEngineCtx *de_ctx, const char *str, bool negate)
410 {
411  DetectTlsData *tls = NULL;
412  int ret = 0, res = 0;
413  size_t pcre2_len;
414  const char *str_ptr;
415  char *orig = NULL;
416  char *tmp_str;
417  uint32_t flag = 0;
418 
419  ret = DetectParsePcreExec(&issuerdn_parse_regex, str, 0, 0);
420  if (ret != 2) {
421  SCLogError("invalid tls.issuerdn option");
422  goto error;
423  }
424 
425  if (negate)
426  flag = DETECT_CONTENT_NEGATED;
427 
428  res = pcre2_substring_get_bynumber(
429  issuerdn_parse_regex.match, 1, (PCRE2_UCHAR8 **)&str_ptr, &pcre2_len);
430  if (res < 0) {
431  SCLogError("pcre2_substring_get_bynumber failed");
432  goto error;
433  }
434 
435  /* We have a correct id option */
436  tls = SCMalloc(sizeof(DetectTlsData));
437  if (unlikely(tls == NULL))
438  goto error;
439  tls->issuerdn = NULL;
440  tls->flags = flag;
441 
442  orig = SCStrdup((char*)str_ptr);
443  if (unlikely(orig == NULL)) {
444  goto error;
445  }
446  pcre2_substring_free((PCRE2_UCHAR *)str_ptr);
447 
448  tmp_str=orig;
449 
450  /* Let's see if we need to escape "'s */
451  if (tmp_str[0] == '"')
452  {
453  tmp_str[strlen(tmp_str) - 1] = '\0';
454  tmp_str += 1;
455  }
456 
457  tls->issuerdn = SCStrdup(tmp_str);
458  if (unlikely(tls->issuerdn == NULL)) {
459  goto error;
460  }
461 
462  SCFree(orig);
463 
464  SCLogDebug("Will look for TLS issuerdn %s", tls->issuerdn);
465 
466  return tls;
467 
468 error:
469  if (orig != NULL)
470  SCFree(orig);
471  if (tls != NULL)
472  DetectTlsIssuerDNFree(de_ctx, tls);
473  return NULL;
474 
475 }
476 
477 /**
478  * \brief this function is used to add the parsed "id" option
479  * \brief into the current signature
480  *
481  * \param de_ctx pointer to the Detection Engine Context
482  * \param s pointer to the Current Signature
483  * \param idstr pointer to the user provided "id" option
484  *
485  * \retval 0 on Success
486  * \retval -1 on Failure
487  */
488 static int DetectTlsIssuerDNSetup (DetectEngineCtx *de_ctx, Signature *s, const char *str)
489 {
490  DetectTlsData *tls = NULL;
491  SigMatch *sm = NULL;
492 
494  return -1;
495 
496  tls = DetectTlsIssuerDNParse(de_ctx, str, s->init_data->negated);
497  if (tls == NULL)
498  goto error;
499 
500  /* Okay so far so good, lets get this into a SigMatch
501  * and put it in the Signature. */
502  sm = SigMatchAlloc();
503  if (sm == NULL)
504  goto error;
505 
507  sm->ctx = (void *)tls;
508 
509  SigMatchAppendSMToList(s, sm, g_tls_cert_list_id);
510  return 0;
511 
512 error:
513  if (tls != NULL)
514  DetectTlsIssuerDNFree(de_ctx, tls);
515  if (sm != NULL)
516  SCFree(sm);
517  return -1;
518 
519 }
520 
521 /**
522  * \brief this function will free memory associated with DetectTlsData
523  *
524  * \param id_d pointer to DetectTlsData
525  */
526 static void DetectTlsIssuerDNFree(DetectEngineCtx *de_ctx, void *ptr)
527 {
528  DetectTlsData *id_d = (DetectTlsData *)ptr;
529  SCFree(id_d->issuerdn);
530  SCFree(id_d);
531 }
532 
533 /**
534  * \brief This function is used to parse fingerprint passed via keyword: "fingerprint"
535  *
536  * \param de_ctx Pointer to the detection engine context
537  * \param str Pointer to the user provided fingerprint option
538  *
539  * \retval pointer to DetectTlsData on success
540  * \retval NULL on failure
541  */
542 
543 /**
544  * \brief this function is used to add the parsed "fingerprint" option
545  * \brief into the current signature
546  *
547  * \param de_ctx pointer to the Detection Engine Context
548  * \param s pointer to the Current Signature
549  * \param id pointer to the user provided "fingerprint" option
550  *
551  * \retval 0 on Success
552  * \retval -1 on Failure
553  */
554 static int DetectTlsFingerprintSetup (DetectEngineCtx *de_ctx, Signature *s, const char *str)
555 {
556 
557  if (DetectContentSetup(de_ctx, s, str) < 0) {
558  return -1;
559  }
560 
562  g_tls_cert_fingerprint_list_id, ALPROTO_TLS) < 0)
563  return -1;
564 
565  return 0;
566 }
567 
568 /**
569  * \brief this function will free memory associated with DetectTlsData
570  *
571  * \param pointer to DetectTlsData
572  */
573 static void DetectTlsFingerprintFree(DetectEngineCtx *de_ctx, void *ptr)
574 {
575  DetectTlsData *id_d = (DetectTlsData *)ptr;
576  if (id_d->fingerprint)
577  SCFree(id_d->fingerprint);
578  SCFree(id_d);
579 }
580 
581 /**
582  * \brief this function is used to add the parsed "store" option
583  * \brief into the current signature
584  *
585  * \param de_ctx pointer to the Detection Engine Context
586  * \param s pointer to the Current Signature
587  * \param idstr pointer to the user provided "store" option
588  *
589  * \retval 0 on Success
590  * \retval -1 on Failure
591  */
592 static int DetectTlsStoreSetup (DetectEngineCtx *de_ctx, Signature *s, const char *str)
593 {
594  SigMatch *sm = NULL;
595 
597  return -1;
598 
599  sm = SigMatchAlloc();
600  if (sm == NULL)
601  return -1;
602 
604  s->flags |= SIG_FLAG_TLSSTORE;
605 
607  return 0;
608 }
609 
610 /** \warning modifies Flow::alstate */
611 static int DetectTlsStorePostMatch (DetectEngineThreadCtx *det_ctx,
612  Packet *p, const Signature *s, const SigMatchCtx *unused)
613 {
614  SCEnter();
615 
616  if (p->flow == NULL)
617  return 0;
618 
619  SSLState *ssl_state = FlowGetAppState(p->flow);
620  if (ssl_state == NULL) {
621  SCLogDebug("no tls state, no match");
622  SCReturnInt(0);
623  }
624 
625  SSLStateConnp *connp;
626 
627  if (p->flow->flags & STREAM_TOSERVER) {
628  connp = &ssl_state->client_connp;
629  } else {
630  connp = &ssl_state->server_connp;
631  }
632 
633  connp->cert_log_flag |= SSL_TLS_LOG_PEM;
634  SCReturnInt(1);
635 }
DetectParseRegex::match
pcre2_match_data * match
Definition: detect-parse.h:47
SigTableElmt_::url
const char * url
Definition: detect.h:1243
SSLStateConnp_::cert0_subject
char * cert0_subject
Definition: app-layer-ssl.h:252
DetectSignatureSetAppProto
int DetectSignatureSetAppProto(Signature *s, AppProto alproto)
Definition: detect-parse.c:1500
SSLState_
SSLv[2.0|3.[0|1|2|3]] state structure.
Definition: app-layer-ssl.h:288
detect-content.h
DetectTlsData_::fingerprint
char * fingerprint
Definition: detect-tls.h:42
detect-engine.h
SigTableElmt_::desc
const char * desc
Definition: detect.h:1242
PARSE_REGEX
#define PARSE_REGEX
Regex for parsing "id" option, matching number or "number".
Definition: detect-tls.c:69
DetectParsePcreExec
int DetectParsePcreExec(DetectParseRegex *parse_regex, const char *str, int start_offset, int options)
Definition: detect-parse.c:2477
SigTableElmt_::Free
void(* Free)(DetectEngineCtx *, void *)
Definition: detect.h:1230
flow-util.h
DetectParseRegex
Definition: detect-parse.h:44
SigTableElmt_::name
const char * name
Definition: detect.h:1240
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:306
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:307
SSLStateConnp_
Definition: app-layer-ssl.h:231
threads.h
Flow_
Flow data structure.
Definition: flow.h:357
SigTableElmt_::flags
uint16_t flags
Definition: detect.h:1234
DetectEngineCtx_
main detection engine ctx
Definition: detect.h:787
SigTableElmt_::AppLayerTxMatch
int(* AppLayerTxMatch)(DetectEngineThreadCtx *, Flow *, uint8_t flags, void *alstate, void *txv, const Signature *, const SigMatchCtx *)
Definition: detect.h:1211
DetectTlsData_
Definition: detect-tls.h:37
m
SCMutex m
Definition: flow-hash.h:6
TLS_STATE_CERT_READY
@ TLS_STATE_CERT_READY
Definition: app-layer-ssl.h:78
DetectTlsData_::flags
uint32_t flags
Definition: detect-tls.h:39
SIG_FLAG_TOCLIENT
#define SIG_FLAG_TOCLIENT
Definition: detect.h:231
SigTableElmt_::Setup
int(* Setup)(DetectEngineCtx *, Signature *, const char *)
Definition: detect.h:1225
util-unittest.h
SSLStateConnp_::cert0_issuerdn
char * cert0_issuerdn
Definition: app-layer-ssl.h:253
util-unittest-helper.h
DETECT_AL_TLS_CERT_SUBJECT
@ DETECT_AL_TLS_CERT_SUBJECT
Definition: detect-engine-register.h:228
SIGMATCH_QUOTES_MANDATORY
#define SIGMATCH_QUOTES_MANDATORY
Definition: detect.h:1441
DETECT_SM_LIST_POSTMATCH
@ DETECT_SM_LIST_POSTMATCH
Definition: detect.h:89
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:230
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:1027
DETECT_AL_TLS_CERT_ISSUER
@ DETECT_AL_TLS_CERT_ISSUER
Definition: detect-engine-register.h:227
DetectSetupParseRegexes
void DetectSetupParseRegexes(const char *parse_str, DetectParseRegex *detect_parse)
Definition: detect-parse.c:2598
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:1238
SigMatch_::ctx
SigMatchCtx * ctx
Definition: detect.h:318
Signature_::flags
uint32_t flags
Definition: detect.h:543
DetectEngineContentModifierBufferSetup
int DetectEngineContentModifierBufferSetup(DetectEngineCtx *de_ctx, Signature *s, const char *arg, int sm_type, int sm_list, AppProto alproto)
Definition: detect-parse.c:151
Packet_
Definition: decode.h:428
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:224
SIGMATCH_HANDLE_NEGATION
#define SIGMATCH_HANDLE_NEGATION
Definition: detect.h:1445
Signature_::init_data
SignatureInitData * init_data
Definition: detect.h:613
detect-engine-state.h
Data structures and function prototypes for keeping state for the detection engine.
SignatureInitData_::negated
bool negated
Definition: detect.h:497
SigTableElmt_::Match
int(* Match)(DetectEngineThreadCtx *, Packet *, const Signature *, const SigMatchCtx *)
Definition: detect.h:1208
SigMatchAlloc
SigMatch * SigMatchAlloc(void)
Definition: detect-parse.c:241
SigMatchCtx_
Used to start a pointer to SigMatch context Should never be dereferenced without casting to something...
Definition: detect.h:310
DETECT_AL_TLS_CERT_FINGERPRINT
@ DETECT_AL_TLS_CERT_FINGERPRINT
Definition: detect-engine-register.h:230
DetectTlsRegister
void DetectTlsRegister(void)
Registration function for keyword: tls.version.
Definition: detect-tls.c:101
Packet_::flow
struct Flow_ * flow
Definition: decode.h:465
DetectBufferTypeRegister
int DetectBufferTypeRegister(const char *name)
Definition: detect-engine.c:1025
flags
uint8_t flags
Definition: decode-gre.h:0
SigTableElmt_::alias
const char * alias
Definition: detect.h:1241
detect-tls.h
suricata-common.h
SigMatch_::type
uint16_t type
Definition: detect.h:316
sigmatch_table
SigTableElmt sigmatch_table[DETECT_TBLSIZE]
Definition: detect-parse.c:76
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:1961
SSL_TLS_LOG_PEM
#define SSL_TLS_LOG_PEM
Definition: app-layer-ssl.h:141
SCMalloc
#define SCMalloc(sz)
Definition: util-mem.h:47
str
#define str(s)
Definition: suricata-common.h:280
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:427
detect-parse.h
Signature_
Signature container.
Definition: detect.h:542
SigMatch_
a single match condition for a signature
Definition: detect.h:315
SSLStateConnp_::cert_log_flag
uint32_t cert_log_flag
Definition: app-layer-ssl.h:269
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:1425
SIG_FLAG_TLSSTORE
#define SIG_FLAG_TLSSTORE
Definition: detect.h:233
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
SigMatchAppendSMToList
void SigMatchAppendSMToList(Signature *s, SigMatch *new, int list)
Append a SigMatch to the list type.
Definition: detect-parse.c:356
app-layer.h