suricata
detect-app-layer-protocol.c
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1 /* Copyright (C) 2007-2013 Open Information Security Foundation
2  *
3  * You can copy, redistribute or modify this Program under the terms of
4  * the GNU General Public License version 2 as published by the Free
5  * Software Foundation.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  * GNU General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * version 2 along with this program; if not, write to the Free Software
14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
15  * 02110-1301, USA.
16  */
17 
18 /**
19  * \file
20  *
21  * \author Anoop Saldanha <anoopsaldanha@gmail.com>
22  */
23 
24 #include "suricata-common.h"
25 #include "detect-engine.h"
28 #include "detect-parse.h"
30 #include "app-layer.h"
31 #include "app-layer-parser.h"
32 #include "util-debug.h"
33 #include "util-unittest.h"
34 #include "util-unittest-helper.h"
35 
36 static void DetectAppLayerProtocolRegisterTests(void);
37 
38 static int DetectAppLayerProtocolPacketMatch(ThreadVars *tv,
39  DetectEngineThreadCtx *det_ctx,
40  Packet *p, const Signature *s, const SigMatchCtx *ctx)
41 {
42  SCEnter();
43 
44  int r = 0;
45  const DetectAppLayerProtocolData *data = (const DetectAppLayerProtocolData *)ctx;
46 
47  /* if the sig is PD-only we only match when PD packet flags are set */
48  if ((s->flags & SIG_FLAG_PDONLY) &&
50  {
51  SCLogDebug("packet %"PRIu64": flags not set", p->pcap_cnt);
52  SCReturnInt(0);
53  }
54 
55  const Flow *f = p->flow;
56  if (f == NULL) {
57  SCLogDebug("packet %"PRIu64": no flow", p->pcap_cnt);
58  SCReturnInt(0);
59  }
60 
61  /* unknown means protocol detection isn't ready yet */
62 
64  {
65  SCLogDebug("toserver packet %"PRIu64": looking for %u/neg %u, got %u",
66  p->pcap_cnt, data->alproto, data->negated, f->alproto_ts);
67 
68  r = (data->negated) ? (f->alproto_ts != data->alproto) :
69  (f->alproto_ts == data->alproto);
70 
71  } else if ((f->alproto_tc != ALPROTO_UNKNOWN) && (p->flowflags & FLOW_PKT_TOCLIENT))
72  {
73  SCLogDebug("toclient packet %"PRIu64": looking for %u/neg %u, got %u",
74  p->pcap_cnt, data->alproto, data->negated, f->alproto_tc);
75 
76  r = (data->negated) ? (f->alproto_tc != data->alproto) :
77  (f->alproto_tc == data->alproto);
78  }
79  else {
80  SCLogDebug("packet %"PRIu64": default case: direction %02x, approtos %u/%u/%u",
81  p->pcap_cnt,
83  f->alproto, f->alproto_ts, f->alproto_tc);
84  }
85 
86  SCReturnInt(r);
87 }
88 
89 static DetectAppLayerProtocolData *DetectAppLayerProtocolParse(const char *arg, bool negate)
90 {
92  AppProto alproto = ALPROTO_UNKNOWN;
93 
94  if (strcmp(arg, "failed") == 0) {
95  alproto = ALPROTO_FAILED;
96  } else {
97  alproto = AppLayerGetProtoByName((char *)arg);
98  if (alproto == ALPROTO_UNKNOWN) {
99  SCLogError(SC_ERR_INVALID_SIGNATURE, "app-layer-protocol "
100  "keyword supplied with unknown protocol \"%s\"", arg);
101  return NULL;
102  }
103  }
104 
105  data = SCMalloc(sizeof(DetectAppLayerProtocolData));
106  if (unlikely(data == NULL))
107  return NULL;
108  data->alproto = alproto;
109  data->negated = negate;
110 
111  return data;
112 }
113 
114 static _Bool HasConflicts(const DetectAppLayerProtocolData *us,
115  const DetectAppLayerProtocolData *them)
116 {
117  /* mixing negated and non negated is illegal */
118  if (them->negated ^ us->negated)
119  return TRUE;
120  /* multiple non-negated is illegal */
121  if (!us->negated)
122  return TRUE;
123  /* duplicate option */
124  if (us->alproto == them->alproto)
125  return TRUE;
126 
127  /* all good */
128  return FALSE;
129 }
130 
131 static int DetectAppLayerProtocolSetup(DetectEngineCtx *de_ctx,
132  Signature *s, const char *arg)
133 {
134  DetectAppLayerProtocolData *data = NULL;
135  SigMatch *sm = NULL;
136 
137  if (s->alproto != ALPROTO_UNKNOWN) {
138  SCLogError(SC_ERR_CONFLICTING_RULE_KEYWORDS, "Either we already "
139  "have the rule match on an app layer protocol set through "
140  "other keywords that match on this protocol, or have "
141  "already seen a non-negated app-layer-protocol.");
142  goto error;
143  }
144 
145  data = DetectAppLayerProtocolParse(arg, s->init_data->negated);
146  if (data == NULL)
147  goto error;
148 
150  for ( ; tsm != NULL; tsm = tsm->next) {
151  if (tsm->type == DETECT_AL_APP_LAYER_PROTOCOL) {
152  const DetectAppLayerProtocolData *them = (const DetectAppLayerProtocolData *)tsm->ctx;
153 
154  if (HasConflicts(data, them)) {
156  "positive app-layer-protocol match with negated "
157  "match or match for 'failed'.");
158  goto error;
159  }
160  }
161  }
162 
163  sm = SigMatchAlloc();
164  if (sm == NULL)
165  goto error;
166 
168  sm->ctx = (void *)data;
169 
171  return 0;
172 
173 error:
174  if (data != NULL)
175  SCFree(data);
176  return -1;
177 }
178 
179 static void DetectAppLayerProtocolFree(void *ptr)
180 {
181  SCFree(ptr);
182  return;
183 }
184 
185 /** \internal
186  * \brief prefilter function for protocol detect matching
187  */
188 static void
189 PrefilterPacketAppProtoMatch(DetectEngineThreadCtx *det_ctx, Packet *p, const void *pectx)
190 {
191  const PrefilterPacketHeaderCtx *ctx = pectx;
192 
193  if (PrefilterPacketHeaderExtraMatch(ctx, p) == FALSE) {
194  SCLogDebug("packet %"PRIu64": extra match failed", p->pcap_cnt);
195  SCReturn;
196  }
197 
198  if (p->flow == NULL) {
199  SCLogDebug("packet %"PRIu64": no flow, no alproto", p->pcap_cnt);
200  SCReturn;
201  }
202 
204  SCLogDebug("packet %"PRIu64": flags not set", p->pcap_cnt);
205  SCReturn;
206  }
207 
209  {
210  int r = (ctx->v1.u16[0] == p->flow->alproto_ts) ^ ctx->v1.u8[2];
211  if (r) {
212  PrefilterAddSids(&det_ctx->pmq, ctx->sigs_array, ctx->sigs_cnt);
213  }
214  } else if ((p->flags & PKT_PROTO_DETECT_TC_DONE) && (p->flowflags & FLOW_PKT_TOCLIENT))
215  {
216  int r = (ctx->v1.u16[0] == p->flow->alproto_tc) ^ ctx->v1.u8[2];
217  if (r) {
218  PrefilterAddSids(&det_ctx->pmq, ctx->sigs_array, ctx->sigs_cnt);
219  }
220  }
221 }
222 
223 static void
224 PrefilterPacketAppProtoSet(PrefilterPacketHeaderValue *v, void *smctx)
225 {
226  const DetectAppLayerProtocolData *a = smctx;
227  v->u16[0] = a->alproto;
228  v->u8[2] = (uint8_t)a->negated;
229 }
230 
231 static _Bool
232 PrefilterPacketAppProtoCompare(PrefilterPacketHeaderValue v, void *smctx)
233 {
234  const DetectAppLayerProtocolData *a = smctx;
235  if (v.u16[0] == a->alproto &&
236  v.u8[2] == (uint8_t)a->negated)
237  return TRUE;
238  return FALSE;
239 }
240 
241 static int PrefilterSetupAppProto(DetectEngineCtx *de_ctx, SigGroupHead *sgh)
242 {
244  PrefilterPacketAppProtoSet,
245  PrefilterPacketAppProtoCompare,
246  PrefilterPacketAppProtoMatch);
247 }
248 
249 static _Bool PrefilterAppProtoIsPrefilterable(const Signature *s)
250 {
251  if (s->flags & SIG_FLAG_PDONLY) {
252  SCLogDebug("prefilter on PD %u", s->id);
253  return TRUE;
254  }
255  return FALSE;
256 }
257 
259 {
260  sigmatch_table[DETECT_AL_APP_LAYER_PROTOCOL].name = "app-layer-protocol";
262  DetectAppLayerProtocolPacketMatch;
264  DetectAppLayerProtocolSetup;
266  DetectAppLayerProtocolFree;
268  DetectAppLayerProtocolRegisterTests;
271 
273  PrefilterSetupAppProto;
275  PrefilterAppProtoIsPrefilterable;
276  return;
277 }
278 
279 /**********************************Unittests***********************************/
280 
281 #ifdef UNITTESTS
282 
283 static int DetectAppLayerProtocolTest01(void)
284 {
285  DetectAppLayerProtocolData *data = DetectAppLayerProtocolParse("http", false);
286  FAIL_IF_NULL(data);
287  FAIL_IF(data->alproto != ALPROTO_HTTP);
288  FAIL_IF(data->negated != 0);
289  DetectAppLayerProtocolFree(data);
290  PASS;
291 }
292 
293 static int DetectAppLayerProtocolTest02(void)
294 {
295  DetectAppLayerProtocolData *data = DetectAppLayerProtocolParse("http", true);
296  FAIL_IF_NULL(data);
297  FAIL_IF(data->alproto != ALPROTO_HTTP);
298  FAIL_IF(data->negated == 0);
299  DetectAppLayerProtocolFree(data);
300  PASS;
301 }
302 
303 static int DetectAppLayerProtocolTest03(void)
304 {
305  Signature *s = NULL;
306  DetectAppLayerProtocolData *data = NULL;
308  FAIL_IF_NULL(de_ctx);
309  de_ctx->flags |= DE_QUIET;
310 
311  s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
312  "(app-layer-protocol:http; sid:1;)");
313  FAIL_IF_NULL(s);
314 
316 
317  FAIL_IF_NULL(s->sm_lists[DETECT_SM_LIST_MATCH]);
318  FAIL_IF_NULL(s->sm_lists[DETECT_SM_LIST_MATCH]->ctx);
319 
320  data = (DetectAppLayerProtocolData *)s->sm_lists[DETECT_SM_LIST_MATCH]->ctx;
321  FAIL_IF(data->alproto != ALPROTO_HTTP);
322  FAIL_IF(data->negated);
323  DetectEngineCtxFree(de_ctx);
324  PASS;
325 }
326 
327 static int DetectAppLayerProtocolTest04(void)
328 {
329  Signature *s = NULL;
330  DetectAppLayerProtocolData *data = NULL;
332  FAIL_IF_NULL(de_ctx);
333  de_ctx->flags |= DE_QUIET;
334 
335  s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
336  "(app-layer-protocol:!http; sid:1;)");
337  FAIL_IF_NULL(s);
340 
341  FAIL_IF_NULL(s->sm_lists[DETECT_SM_LIST_MATCH]);
342  FAIL_IF_NULL(s->sm_lists[DETECT_SM_LIST_MATCH]->ctx);
343 
344  data = (DetectAppLayerProtocolData*)s->sm_lists[DETECT_SM_LIST_MATCH]->ctx;
345  FAIL_IF_NULL(data);
346  FAIL_IF(data->alproto != ALPROTO_HTTP);
347  FAIL_IF(data->negated == 0);
348 
349  DetectEngineCtxFree(de_ctx);
350  PASS;
351 }
352 
353 static int DetectAppLayerProtocolTest05(void)
354 {
355  Signature *s = NULL;
356  DetectAppLayerProtocolData *data = NULL;
358  FAIL_IF_NULL(de_ctx);
359  de_ctx->flags |= DE_QUIET;
360 
361  s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
362  "(app-layer-protocol:!http; app-layer-protocol:!smtp; sid:1;)");
363  FAIL_IF_NULL(s);
366 
367  FAIL_IF_NULL(s->sm_lists[DETECT_SM_LIST_MATCH]);
368  FAIL_IF_NULL(s->sm_lists[DETECT_SM_LIST_MATCH]->ctx);
369 
370  data = (DetectAppLayerProtocolData*)s->sm_lists[DETECT_SM_LIST_MATCH]->ctx;
371  FAIL_IF_NULL(data);
372  FAIL_IF(data->alproto != ALPROTO_HTTP);
373  FAIL_IF(data->negated == 0);
374 
375  data = (DetectAppLayerProtocolData*)s->sm_lists[DETECT_SM_LIST_MATCH]->next->ctx;
376  FAIL_IF_NULL(data);
377  FAIL_IF(data->alproto != ALPROTO_SMTP);
378  FAIL_IF(data->negated == 0);
379 
380  DetectEngineCtxFree(de_ctx);
381  PASS;
382 }
383 
384 static int DetectAppLayerProtocolTest06(void)
385 {
386  Signature *s = NULL;
388  FAIL_IF_NULL(de_ctx);
389  de_ctx->flags |= DE_QUIET;
390 
391  s = DetectEngineAppendSig(de_ctx, "alert http any any -> any any "
392  "(app-layer-protocol:smtp; sid:1;)");
393  FAIL_IF_NOT_NULL(s);
394  DetectEngineCtxFree(de_ctx);
395  PASS;
396 }
397 
398 static int DetectAppLayerProtocolTest07(void)
399 {
400  Signature *s = NULL;
402  FAIL_IF_NULL(de_ctx);
403  de_ctx->flags |= DE_QUIET;
404 
405  s = DetectEngineAppendSig(de_ctx, "alert http any any -> any any "
406  "(app-layer-protocol:!smtp; sid:1;)");
407  FAIL_IF_NOT_NULL(s);
408  DetectEngineCtxFree(de_ctx);
409  PASS;
410 }
411 
412 static int DetectAppLayerProtocolTest08(void)
413 {
414  Signature *s = NULL;
416  FAIL_IF_NULL(de_ctx);
417  de_ctx->flags |= DE_QUIET;
418 
419  s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
420  "(app-layer-protocol:!smtp; app-layer-protocol:http; sid:1;)");
421  FAIL_IF_NOT_NULL(s);
422  DetectEngineCtxFree(de_ctx);
423  PASS;
424 }
425 
426 static int DetectAppLayerProtocolTest09(void)
427 {
428  Signature *s = NULL;
430  FAIL_IF_NULL(de_ctx);
431  de_ctx->flags |= DE_QUIET;
432 
433  s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
434  "(app-layer-protocol:http; app-layer-protocol:!smtp; sid:1;)");
435  FAIL_IF_NOT_NULL(s);
436  DetectEngineCtxFree(de_ctx);
437  PASS;
438 }
439 
440 static int DetectAppLayerProtocolTest10(void)
441 {
442  Signature *s = NULL;
444  FAIL_IF_NULL(de_ctx);
445  de_ctx->flags |= DE_QUIET;
446 
447  s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
448  "(app-layer-protocol:smtp; app-layer-protocol:!http; sid:1;)");
449  FAIL_IF_NOT_NULL(s);
450  DetectEngineCtxFree(de_ctx);
451  PASS;
452 }
453 
454 static int DetectAppLayerProtocolTest11(void)
455 {
456  DetectAppLayerProtocolData *data = DetectAppLayerProtocolParse("failed", false);
457  FAIL_IF_NULL(data);
458  FAIL_IF(data->alproto != ALPROTO_FAILED);
459  FAIL_IF(data->negated != 0);
460  DetectAppLayerProtocolFree(data);
461  PASS;
462 }
463 
464 static int DetectAppLayerProtocolTest12(void)
465 {
466  DetectAppLayerProtocolData *data = DetectAppLayerProtocolParse("failed", true);
467  FAIL_IF_NULL(data);
468  FAIL_IF(data->alproto != ALPROTO_FAILED);
469  FAIL_IF(data->negated == 0);
470  DetectAppLayerProtocolFree(data);
471  PASS;
472 }
473 
474 static int DetectAppLayerProtocolTest13(void)
475 {
476  Signature *s = NULL;
477  DetectAppLayerProtocolData *data = NULL;
479  FAIL_IF_NULL(de_ctx);
480  de_ctx->flags |= DE_QUIET;
481 
482  s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
483  "(app-layer-protocol:failed; sid:1;)");
484  FAIL_IF_NULL(s);
485 
487 
488  FAIL_IF_NULL(s->sm_lists[DETECT_SM_LIST_MATCH]);
489  FAIL_IF_NULL(s->sm_lists[DETECT_SM_LIST_MATCH]->ctx);
490 
491  data = (DetectAppLayerProtocolData *)s->sm_lists[DETECT_SM_LIST_MATCH]->ctx;
492  FAIL_IF(data->alproto != ALPROTO_FAILED);
493  FAIL_IF(data->negated);
494  DetectEngineCtxFree(de_ctx);
495  PASS;
496 }
497 
498 static int DetectAppLayerProtocolTest14(void)
499 {
500  DetectAppLayerProtocolData *data = NULL;
502  FAIL_IF_NULL(de_ctx);
503  de_ctx->flags |= DE_QUIET;
504 
505  Signature *s1 = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
506  "(app-layer-protocol:http; flowbits:set,blah; sid:1;)");
507  FAIL_IF_NULL(s1);
509  FAIL_IF_NULL(s1->sm_lists[DETECT_SM_LIST_MATCH]);
510  FAIL_IF_NULL(s1->sm_lists[DETECT_SM_LIST_MATCH]->ctx);
511  data = (DetectAppLayerProtocolData *)s1->sm_lists[DETECT_SM_LIST_MATCH]->ctx;
512  FAIL_IF(data->alproto != ALPROTO_HTTP);
513  FAIL_IF(data->negated);
514 
515  Signature *s2 = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
516  "(app-layer-protocol:http; flow:to_client; sid:2;)");
517  FAIL_IF_NULL(s2);
519  FAIL_IF_NULL(s2->sm_lists[DETECT_SM_LIST_MATCH]);
520  FAIL_IF_NULL(s2->sm_lists[DETECT_SM_LIST_MATCH]->ctx);
521  data = (DetectAppLayerProtocolData *)s2->sm_lists[DETECT_SM_LIST_MATCH]->ctx;
522  FAIL_IF(data->alproto != ALPROTO_HTTP);
523  FAIL_IF(data->negated);
524 
525  /* flow:established and other options not supported for PD-only */
526  Signature *s3 = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
527  "(app-layer-protocol:http; flow:to_client,established; sid:3;)");
528  FAIL_IF_NULL(s3);
530  FAIL_IF_NULL(s3->sm_lists[DETECT_SM_LIST_MATCH]);
531  FAIL_IF_NULL(s3->sm_lists[DETECT_SM_LIST_MATCH]->ctx);
532  data = (DetectAppLayerProtocolData *)s3->sm_lists[DETECT_SM_LIST_MATCH]->ctx;
533  FAIL_IF(data->alproto != ALPROTO_HTTP);
534  FAIL_IF(data->negated);
535 
536  SigGroupBuild(de_ctx);
539  FAIL_IF(s3->flags & SIG_FLAG_PDONLY); // failure now
540 
541  DetectEngineCtxFree(de_ctx);
542  PASS;
543 }
544 
545 #endif /* UNITTESTS */
546 
547 static void DetectAppLayerProtocolRegisterTests(void)
548 {
549 #ifdef UNITTESTS /* UNITTESTS */
550  UtRegisterTest("DetectAppLayerProtocolTest01",
551  DetectAppLayerProtocolTest01);
552  UtRegisterTest("DetectAppLayerProtocolTest02",
553  DetectAppLayerProtocolTest02);
554  UtRegisterTest("DetectAppLayerProtocolTest03",
555  DetectAppLayerProtocolTest03);
556  UtRegisterTest("DetectAppLayerProtocolTest04",
557  DetectAppLayerProtocolTest04);
558  UtRegisterTest("DetectAppLayerProtocolTest05",
559  DetectAppLayerProtocolTest05);
560  UtRegisterTest("DetectAppLayerProtocolTest06",
561  DetectAppLayerProtocolTest06);
562  UtRegisterTest("DetectAppLayerProtocolTest07",
563  DetectAppLayerProtocolTest07);
564  UtRegisterTest("DetectAppLayerProtocolTest08",
565  DetectAppLayerProtocolTest08);
566  UtRegisterTest("DetectAppLayerProtocolTest09",
567  DetectAppLayerProtocolTest09);
568  UtRegisterTest("DetectAppLayerProtocolTest10",
569  DetectAppLayerProtocolTest10);
570  UtRegisterTest("DetectAppLayerProtocolTest11",
571  DetectAppLayerProtocolTest11);
572  UtRegisterTest("DetectAppLayerProtocolTest12",
573  DetectAppLayerProtocolTest12);
574  UtRegisterTest("DetectAppLayerProtocolTest13",
575  DetectAppLayerProtocolTest13);
576  UtRegisterTest("DetectAppLayerProtocolTest14",
577  DetectAppLayerProtocolTest14);
578 #endif /* UNITTESTS */
579 
580  return;
581 }
Signature * DetectEngineAppendSig(DetectEngineCtx *de_ctx, const char *sigstr)
Parse and append a Signature into the Detection Engine Context signature list.
SigTableElmt sigmatch_table[DETECT_TBLSIZE]
Definition: detect.h:1403
SignatureInitData * init_data
Definition: detect.h:560
int(* Setup)(DetectEngineCtx *, Signature *, const char *)
Definition: detect.h:1146
#define SIG_FLAG_PDONLY
Definition: detect.h:254
#define SCLogDebug(...)
Definition: util-debug.h:335
struct Flow_ * flow
Definition: decode.h:444
AppProto alproto_tc
Definition: flow.h:409
int(* SetupPrefilter)(DetectEngineCtx *de_ctx, struct SigGroupHead_ *sgh)
Definition: detect.h:1149
int PrefilterSetupPacketHeader(DetectEngineCtx *de_ctx, SigGroupHead *sgh, int sm_type, void(*Set)(PrefilterPacketHeaderValue *v, void *), _Bool(*Compare)(PrefilterPacketHeaderValue v, void *), void(*Match)(DetectEngineThreadCtx *det_ctx, Packet *p, const void *pectx))
uint32_t flags
Definition: detect.h:493
_Bool(* SupportsPrefilter)(const Signature *s)
Definition: detect.h:1148
uint32_t id
Definition: detect.h:525
#define FALSE
#define PASS
Pass the test.
#define unlikely(expr)
Definition: util-optimize.h:35
#define FAIL_IF(expr)
Fail a test if expression evaluates to false.
Definition: util-unittest.h:71
Container for matching data for a signature group.
Definition: detect.h:1295
uint64_t pcap_cnt
Definition: decode.h:566
const char * name
Definition: detect.h:1160
uint16_t AppProto
Signature container.
Definition: detect.h:492
AppProto AppLayerGetProtoByName(char *alproto_name)
Given a protocol string, returns the corresponding internal protocol id.
Definition: app-layer.c:722
#define TRUE
Used to start a pointer to SigMatch context Should never be dereferenced without casting to something...
Definition: detect.h:319
#define SIG_FLAG_APPLAYER
Definition: detect.h:225
struct SigMatch_ * next
Definition: detect.h:328
main detection engine ctx
Definition: detect.h:720
#define DE_QUIET
Definition: detect.h:298
AppProto alproto_ts
Definition: flow.h:408
uint8_t flags
Definition: detect.h:721
void(* Free)(void *)
Definition: detect.h:1151
#define SCLogError(err_code,...)
Macro used to log ERROR messages.
Definition: util-debug.h:294
int SigGroupBuild(DetectEngineCtx *de_ctx)
Convert the signature list into the runtime match structure.
#define PKT_PROTO_DETECT_TS_DONE
Definition: decode.h:1125
void UtRegisterTest(const char *name, int(*TestFn)(void))
Register unit test.
#define SIGMATCH_QUOTES_OPTIONAL
Definition: detect.h:1340
#define SCEnter(...)
Definition: util-debug.h:337
PrefilterRuleStore pmq
Definition: detect.h:1061
uint8_t flowflags
Definition: decode.h:438
#define FLOW_PKT_TOSERVER
Definition: flow.h:193
AppProto alproto
Definition: detect.h:496
#define FAIL_IF_NOT_NULL(expr)
Fail a test if expression evaluates to non-NULL.
Definition: util-unittest.h:96
struct Signature_ * next
Definition: detect.h:563
uint8_t type
Definition: detect.h:325
#define SCReturnInt(x)
Definition: util-debug.h:341
void SigMatchAppendSMToList(Signature *s, SigMatch *new, int list)
Append a SigMatch to the list type.
Definition: detect-parse.c:282
struct SigMatch_ ** smlists
Definition: detect.h:486
SigMatchCtx * ctx
Definition: detect.h:327
#define SCMalloc(a)
Definition: util-mem.h:174
#define SCFree(a)
Definition: util-mem.h:236
int(* Match)(ThreadVars *, DetectEngineThreadCtx *, Packet *, const Signature *, const SigMatchCtx *)
Definition: detect.h:1129
void DetectAppLayerProtocolRegister(void)
#define FAIL_IF_NULL(expr)
Fail a test if expression evaluates to NULL.
Definition: util-unittest.h:89
SigMatch * SigMatchAlloc(void)
Definition: detect-parse.c:226
#define SCReturn
Definition: util-debug.h:339
Per thread variable structure.
Definition: threadvars.h:57
#define FLOW_PKT_TOCLIENT
Definition: flow.h:194
AppProto alproto
application level protocol
Definition: flow.h:407
uint32_t flags
Definition: decode.h:442
#define SIGMATCH_HANDLE_NEGATION
Definition: detect.h:1348
uint16_t flags
Definition: detect.h:1154
void DetectEngineCtxFree(DetectEngineCtx *)
Free a DetectEngineCtx::
Flow data structure.
Definition: flow.h:327
void(* RegisterTests)(void)
Definition: detect.h:1152
a single match condition for a signature
Definition: detect.h:324
#define FAIL_IF_NOT(expr)
Fail a test if expression to true.
Definition: util-unittest.h:82
#define PKT_PROTO_DETECT_TC_DONE
Definition: decode.h:1126
DetectEngineCtx * DetectEngineCtxInit(void)