suricata
detect-asn1.c
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1 /* Copyright (C) 2020-2022 Open Information Security Foundation
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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.
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10  * GNU General Public License for more details.
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14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
15  * 02110-1301, USA.
16  */
17 
18 /**
19  * \file detect-asn1.c
20  *
21  * Implements "asn1" keyword
22  */
23 
24 #include "suricata-common.h"
25 #include "decode.h"
26 #include "rust.h"
27 
28 #include "detect.h"
29 #include "detect-parse.h"
30 
31 #include "flow.h"
32 #include "detect-asn1.h"
33 
34 #include "util-unittest.h"
35 #include "util-unittest-helper.h"
36 #include "util-byte.h"
37 #include "util-debug.h"
38 
39 static int DetectAsn1Setup (DetectEngineCtx *, Signature *, const char *);
40 #ifdef UNITTESTS
41 static void DetectAsn1RegisterTests(void);
42 #endif
43 static void DetectAsn1Free(DetectEngineCtx *, void *);
44 
45 /**
46  * \brief Registration function for asn1
47  */
48 void DetectAsn1Register(void)
49 {
50  sigmatch_table[DETECT_ASN1].name = "asn1";
51  sigmatch_table[DETECT_ASN1].Setup = DetectAsn1Setup;
52  sigmatch_table[DETECT_ASN1].Free = DetectAsn1Free;
53 #ifdef UNITTESTS
54  sigmatch_table[DETECT_ASN1].RegisterTests = DetectAsn1RegisterTests;
55 #endif
56 }
57 
58 bool DetectAsn1Match(const SigMatchData *smd, const uint8_t *buffer, const uint32_t buffer_len,
59  const uint32_t offset)
60 {
61  const DetectAsn1Data *ad = (const DetectAsn1Data *)smd->ctx;
62  Asn1 *asn1 = rs_asn1_decode(buffer, buffer_len, offset, ad);
63  uint8_t ret = rs_asn1_checks(asn1, ad);
64  rs_asn1_free(asn1);
65  return ret == 1;
66 }
67 
68 /**
69  * \brief This function is used to parse asn1 options passed via asn1: keyword
70  *
71  * \param asn1str pointer to the user provided asn1 options
72  *
73  * \retval pointer to `DetectAsn1Data` on success
74  * \retval NULL on failure
75  */
76 static DetectAsn1Data *DetectAsn1Parse(const char *asn1str)
77 {
78  DetectAsn1Data *ad = rs_detect_asn1_parse(asn1str);
79 
80  if (ad == NULL) {
81  SCLogError("Malformed asn1 argument: %s", asn1str);
82  }
83 
84  return ad;
85 }
86 
87 /**
88  * \brief this function is used to add the parsed asn1 data into
89  * the current signature
90  *
91  * \param de_ctx pointer to the detection engine context
92  * \param s pointer to the current signature
93  * \param asn1str pointer to the user provided asn1 options
94  *
95  * \retval 0 on success
96  * \retval -1 on failure
97  */
98 static int DetectAsn1Setup(DetectEngineCtx *de_ctx, Signature *s, const char *asn1str)
99 {
100  DetectAsn1Data *ad = DetectAsn1Parse(asn1str);
101  if (ad == NULL)
102  return -1;
103 
104  if (SigMatchAppendSMToList(de_ctx, s, DETECT_ASN1, (SigMatchCtx *)ad, DETECT_SM_LIST_PMATCH) ==
105  NULL) {
106  DetectAsn1Free(de_ctx, ad);
107  return -1;
108  }
109 
110  s->flags |= SIG_FLAG_REQUIRE_PACKET;
111  return 0;
112 }
113 
114 /**
115  * \brief this function will free memory associated with `DetectAsn1Data`
116  *
117  * \param de_ctx pointer to the detection engine context
118  * \param ptr point to `DetectAsn1Data`
119  */
120 static void DetectAsn1Free(DetectEngineCtx *de_ctx, void *ptr)
121 {
122  DetectAsn1Data *ad = (DetectAsn1Data *)ptr;
123  rs_detect_asn1_free(ad);
124 }
125 
126 #ifdef UNITTESTS
127 
128 /**
129  * \test DetectAsn1TestReal01 Ensure that all works together
130  */
131 static int DetectAsn1TestReal01(void)
132 {
133  uint8_t *buf = (uint8_t *) "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01"
134  "P""\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
135  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
136  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
137  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
138  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111"
139  "\x31\x1F\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05"
140  "Jones""\xA0\x0A\x43\x08""19590717"
141  "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01""P"
142  "\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
143  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
144  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
145  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
146  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111""\x31\x1F"
147  "\x61\x11\x1A\x05""Pablo""\x1A\x01""B""\x1A\x05""Jones"
148  "\xA0\x0A\x43\x08""19590717";
149 
150  uint16_t buflen = strlen((char *)buf) - 1;
151 
152  /* Check the start with AA (this is to test the relative_offset keyword) */
153  uint8_t *buf2 = (uint8_t *) "AA\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01"
154  "P""\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
155  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
156  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
157  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
158  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111"
159  "\x31\x1F\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05"
160  "Jones""\xA0\x0A\x43\x08""19590717"
161  "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01""P"
162  "\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
163  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
164  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
165  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
166  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111""\x31\x1F"
167  "\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05""Jones"
168  "\xA0\x0A\x43\x08""19590717";
169 
170  uint16_t buflen2 = strlen((char *)buf2) - 1;
171 
172  Packet *p[2];
173 
174  p[0] = UTHBuildPacket((uint8_t *)buf, buflen, IPPROTO_TCP);
175  FAIL_IF_NULL(p[0]);
176  p[1] = UTHBuildPacket((uint8_t *)buf2, buflen2, IPPROTO_TCP);
177  FAIL_IF_NULL(p[1]);
178 
179  const char *sigs[3];
180  sigs[0]= "alert ip any any -> any any (msg:\"Testing id 1\"; "
181  "content:\"Pablo\"; asn1:absolute_offset 0, "
182  "oversize_length 130; sid:1;)";
183  sigs[1]= "alert ip any any -> any any (msg:\"Testing id 2\"; "
184  "content:\"AA\"; asn1:relative_offset 0, "
185  "oversize_length 130; sid:2;)";
186  sigs[2]= "alert ip any any -> any any (msg:\"Testing id 3\"; "
187  "content:\"lalala\"; asn1: oversize_length 2000; sid:3;)";
188 
189  uint32_t sid[3] = {1, 2, 3};
190  uint32_t results[2][3] = {
191  /* packet 0 match sid 1 */
192  {1, 0, 0},
193  /* packet 1 match sid 2 */
194  {0, 1, 0}};
195  /* None of the packets should match sid 3 */
196  FAIL_IF_NOT(UTHGenericTest(p, 2, sigs, sid, (uint32_t *)results, 3) == 1);
197 
198  UTHFreePackets(p, 2);
199  PASS;
200 }
201 
202 /**
203  * \test DetectAsn1TestReal02 Ensure that all works together
204  */
205 static int DetectAsn1TestReal02(void)
206 {
207  int result = 0;
208  uint8_t *buf = (uint8_t *) "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01"
209  "P""\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
210  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
211  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
212  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
213  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111"
214  "\x31\x1F\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05"
215  "Jones""\xA0\x0A\x43\x08""19590717"
216  "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01""P"
217  "\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
218  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
219  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
220  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
221  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111""\x31\x1F"
222  "\x61\x11\x1A\x05""Pablo""\x1A\x01""B""\x1A\x05""Jones"
223  "\xA0\x0A\x43\x08""19590717";
224 
225  uint16_t buflen = strlen((char *)buf) - 1;
226 
227  /* Check the start with AA (this is to test the relative_offset keyword) */
228  uint8_t *buf2 = (uint8_t *) "AA\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01"
229  "P""\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
230  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
231  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
232  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
233  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111"
234  "\x31\x1F\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05"
235  "Jones""\xA0\x0A\x43\x08""19590717"
236  "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01""P"
237  "\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
238  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
239  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
240  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
241  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111""\x31\x1F"
242  "\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05""Jones"
243  "\xA0\x0A\x43\x08""19590717";
244 
245  uint16_t buflen2 = strlen((char *)buf2) - 1;
246 
247  Packet *p[2];
248 
249  p[0] = UTHBuildPacket((uint8_t *)buf, buflen, IPPROTO_TCP);
250  p[1] = UTHBuildPacket((uint8_t *)buf2, buflen2, IPPROTO_TCP);
251 
252  if (p[0] == NULL || p[1] == NULL)
253  goto end;
254 
255  const char *sigs[3];
256  sigs[0]= "alert ip any any -> any any (msg:\"Testing id 1\"; "
257  "content:\"Pablo\"; asn1:absolute_offset 0, "
258  "oversize_length 140; sid:1;)";
259  sigs[1]= "alert ip any any -> any any (msg:\"Testing id 2\"; "
260  "content:\"AA\"; asn1:relative_offset 0, "
261  "oversize_length 140; sid:2;)";
262  sigs[2]= "alert ip any any -> any any (msg:\"Testing id 3\"; "
263  "content:\"lalala\"; asn1: oversize_length 2000; sid:3;)";
264 
265  uint32_t sid[3] = {1, 2, 3};
266 
267  uint32_t results[2][3] = {
268  {0, 0, 0},
269  {0, 0, 0}};
270  /* None of the packets should match */
271 
272  result = UTHGenericTest(p, 2, sigs, sid, (uint32_t *) results, 3);
273 
274  UTHFreePackets(p, 2);
275 end:
276  return result;
277 }
278 
279 /**
280  * \test DetectAsn1TestReal03 Ensure that all works together
281  */
282 static int DetectAsn1TestReal03(void)
283 {
284  int result = 0;
285  uint8_t buf[261] = "";
286  /* universal class, primitive type, tag_num = 9 (Data type Real) */
287  buf[0] = '\x09';
288  /* length, definite form, 2 octets */
289  buf[1] = '\x82';
290  /* length is the sum of the following octets (257): */
291  buf[2] = '\x01';
292  buf[3] = '\x01';
293 
294  /* Fill the content of the number */
295  uint16_t i = 4;
296  for (; i < 257;i++)
297  buf[i] = '\x05';
298 
299  uint16_t buflen = 261;
300 
301  /* Check the start with AA (this is to test the relative_offset keyword) */
302  uint8_t *buf2 = (uint8_t *) "AA\x03\x01\xFF";
303 
304  uint16_t buflen2 = 5;
305 
306  Packet *p[2] = { NULL, NULL };
307 
308  p[0] = UTHBuildPacket((uint8_t *)buf, buflen, IPPROTO_TCP);
309  p[1] = UTHBuildPacket((uint8_t *)buf2, buflen2, IPPROTO_TCP);
310 
311  if (p[0] == NULL || p[1] == NULL)
312  goto end;
313 
314  const char *sigs[3];
315  /* This should match the first packet */
316  sigs[0]= "alert ip any any -> any any (msg:\"Testing id 1\"; "
317  "asn1:absolute_offset 0, double_overflow; sid:1;)";
318  /* This should match the second packet */
319  sigs[1]= "alert ip any any -> any any (msg:\"Testing id 2\"; "
320  "asn1:relative_offset 2, bitstring_overflow,"
321  "oversize_length 140; sid:2;)";
322  /* This should match no packet */
323  sigs[2]= "alert ip any any -> any any (msg:\"Testing id 3\"; "
324  "asn1: oversize_length 2000; sid:3;)";
325 
326  uint32_t sid[3] = {1, 2, 3};
327 
328  uint32_t results[2][3] = {{1, 0, 0},
329  {0, 1, 0}};
330 
331  result = UTHGenericTest(p, 2, sigs, sid, (uint32_t *) results, 3);
332 
333  UTHFreePackets(p, 2);
334 end:
335  return result;
336 }
337 
338 /**
339  * \test DetectAsn1TestReal04 like the real test 02, but modified the
340  * relative offset to check negative offset values, in this case
341  * start decoding from -7 bytes respect the content match "John"
342  */
343 static int DetectAsn1TestReal04(void)
344 {
345  int result = 0;
346  uint8_t *buf = (uint8_t *) "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01"
347  "P""\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
348  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
349  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
350  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
351  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111"
352  "\x31\x1F\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05"
353  "Jones""\xA0\x0A\x43\x08""19590717"
354  "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01""P"
355  "\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
356  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
357  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
358  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
359  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111""\x31\x1F"
360  "\x61\x11\x1A\x05""Pablo""\x1A\x01""B""\x1A\x05""Jones"
361  "\xA0\x0A\x43\x08""19590717";
362 
363  uint16_t buflen = strlen((char *)buf) - 1;
364 
365  /* Check the start with AA (this is to test the relative_offset keyword) */
366  uint8_t *buf2 = (uint8_t *) "AA\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01"
367  "P""\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
368  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
369  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
370  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
371  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111"
372  "\x31\x1F\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05"
373  "Jones""\xA0\x0A\x43\x08""19590717"
374  "\x60\x81\x85\x61\x10\x1A\x04""John""\x1A\x01""P"
375  "\x1A\x05""Smith""\xA0\x0A\x1A\x08""Director"
376  "\x42\x01\x33\xA1\x0A\x43\x08""19710917"
377  "\xA2\x12\x61\x10\x1A\x04""Mary""\x1A\x01""T""\x1A\x05"
378  "Smith""\xA3\x42\x31\x1F\x61\x11\x1A\x05""Ralph""\x1A\x01"
379  "T""\x1A\x05""Smith""\xA0\x0A\x43\x08""19571111""\x31\x1F"
380  "\x61\x11\x1A\x05""Susan""\x1A\x01""B""\x1A\x05""Jones"
381  "\xA0\x0A\x43\x08""19590717";
382 
383  uint16_t buflen2 = strlen((char *)buf2) - 1;
384 
385  Packet *p[2];
386 
387  p[0] = UTHBuildPacket((uint8_t *)buf, buflen, IPPROTO_TCP);
388  p[1] = UTHBuildPacket((uint8_t *)buf2, buflen2, IPPROTO_TCP);
389 
390  if (p[0] == NULL || p[1] == NULL)
391  goto end;
392 
393  const char *sigs[3];
394  sigs[0]= "alert ip any any -> any any (msg:\"Testing id 1\"; "
395  "content:\"Pablo\"; asn1:absolute_offset 0, "
396  "oversize_length 140; sid:1;)";
397  sigs[1]= "alert ip any any -> any any (msg:\"Testing id 2\"; "
398  "content:\"John\"; asn1:relative_offset -11, "
399  "oversize_length 140; sid:2;)";
400  sigs[2]= "alert ip any any -> any any (msg:\"Testing id 3\"; "
401  "content:\"lalala\"; asn1: oversize_length 2000; sid:3;)";
402 
403  uint32_t sid[3] = {1, 2, 3};
404 
405  uint32_t results[2][3] = {
406  {0, 0, 0},
407  {0, 0, 0}};
408  /* None of the packets should match */
409 
410  result = UTHGenericTest(p, 2, sigs, sid, (uint32_t *) results, 3);
411 
412  UTHFreePackets(p, 2);
413 end:
414  return result;
415 }
416 
417 /**
418  * \brief this function registers unit tests for DetectAsn1
419  */
420 static void DetectAsn1RegisterTests(void)
421 {
422  UtRegisterTest("DetectAsn1TestReal01", DetectAsn1TestReal01);
423  UtRegisterTest("DetectAsn1TestReal02", DetectAsn1TestReal02);
424  UtRegisterTest("DetectAsn1TestReal03", DetectAsn1TestReal03);
425  UtRegisterTest("DetectAsn1TestReal04", DetectAsn1TestReal04);
426 }
427 #endif /* UNITTESTS */
DetectAsn1Match
bool DetectAsn1Match(const SigMatchData *smd, const uint8_t *buffer, const uint32_t buffer_len, const uint32_t offset)
Definition: detect-asn1.c:58
util-byte.h
DETECT_SM_LIST_PMATCH
@ DETECT_SM_LIST_PMATCH
Definition: detect.h:116
FAIL_IF_NULL
#define FAIL_IF_NULL(expr)
Fail a test if expression evaluates to NULL.
Definition: util-unittest.h:89
sigmatch_table
SigTableElmt * sigmatch_table
Definition: detect-parse.c:127
offset
uint64_t offset
Definition: util-streaming-buffer.h:0
SigTableElmt_::Free
void(* Free)(DetectEngineCtx *, void *)
Definition: detect.h:1294
SigTableElmt_::name
const char * name
Definition: detect.h:1304
UtRegisterTest
void UtRegisterTest(const char *name, int(*TestFn)(void))
Register unit test.
Definition: util-unittest.c:103
SigMatchData_::ctx
SigMatchCtx * ctx
Definition: detect.h:361
DetectEngineCtx_
main detection engine ctx
Definition: detect.h:841
rust.h
UTHBuildPacket
Packet * UTHBuildPacket(uint8_t *payload, uint16_t payload_len, uint8_t ipproto)
UTHBuildPacket is a wrapper that build packets with default ip and port fields.
Definition: util-unittest-helper.c:359
SigMatchData_
Data needed for Match()
Definition: detect.h:358
SigTableElmt_::Setup
int(* Setup)(DetectEngineCtx *, Signature *, const char *)
Definition: detect.h:1289
util-unittest.h
DETECT_ASN1
@ DETECT_ASN1
Definition: detect-engine-register.h:92
util-unittest-helper.h
FAIL_IF_NOT
#define FAIL_IF_NOT(expr)
Fail a test if expression evaluates to false.
Definition: util-unittest.h:82
detect-asn1.h
DetectAsn1Register
void DetectAsn1Register(void)
Registration function for asn1.
Definition: detect-asn1.c:48
decode.h
util-debug.h
PASS
#define PASS
Pass the test.
Definition: util-unittest.h:105
de_ctx
DetectEngineCtx * de_ctx
Definition: fuzz_siginit.c:17
detect.h
Signature_::flags
uint32_t flags
Definition: detect.h:602
Packet_
Definition: decode.h:473
SigMatchCtx_
Used to start a pointer to SigMatch context Should never be dereferenced without casting to something...
Definition: detect.h:344
suricata-common.h
UTHGenericTest
int UTHGenericTest(Packet **pkt, int numpkts, const char *sigs[], uint32_t sids[], uint32_t *results, int numsigs)
UTHGenericTest: function that perform a generic check taking care of as maximum common unittest eleme...
Definition: util-unittest-helper.c:565
SCLogError
#define SCLogError(...)
Macro used to log ERROR messages.
Definition: util-debug.h:261
detect-parse.h
Signature_
Signature container.
Definition: detect.h:601
SigMatchAppendSMToList
SigMatch * SigMatchAppendSMToList(DetectEngineCtx *de_ctx, Signature *s, uint16_t type, SigMatchCtx *ctx, const int list)
Append a SigMatch to the list type.
Definition: detect-parse.c:436
flow.h
SigTableElmt_::RegisterTests
void(* RegisterTests)(void)
Definition: detect.h:1296
SIG_FLAG_REQUIRE_PACKET
#define SIG_FLAG_REQUIRE_PACKET
Definition: detect.h:250
UTHFreePackets
void UTHFreePackets(Packet **p, int numpkts)
UTHFreePackets: function to release the allocated data from UTHBuildPacket and the packet itself.
Definition: util-unittest-helper.c:450