suricata
detect-geoip.c
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1 /* Copyright (C) 2012-2019 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 Ignacio Sanchez <sanchezmartin.ji@gmail.com>
22  * \author Bill Meeks <billmeeks8@gmail.com>
23  *
24  * Implements the geoip keyword.
25  * Updated to use MaxMind GeoIP2 database.
26  */
27 
28 #include "suricata-common.h"
29 #include "debug.h"
30 #include "decode.h"
31 #include "detect.h"
32 
33 #include "detect-parse.h"
34 #include "detect-engine.h"
35 #include "detect-engine-mpm.h"
36 
37 #include "detect-geoip.h"
38 
39 #include "util-mem.h"
40 #include "util-unittest.h"
41 #include "util-unittest-helper.h"
42 
43 #ifndef HAVE_GEOIP
44 
45 static int DetectGeoipSetupNoSupport (DetectEngineCtx *a, Signature *b, const char *c)
46 {
47  SCLogError(SC_ERR_NO_GEOIP_SUPPORT, "no GeoIP support built in, needed for geoip keyword");
48  return -1;
49 }
50 
51 /**
52  * \brief Registration function for geoip keyword (no libgeoip support)
53  * \todo add support for src_only and dst_only
54  */
56 {
57  sigmatch_table[DETECT_GEOIP].name = "geoip";
58  sigmatch_table[DETECT_GEOIP].desc = "match on the source, destination or source and destination IP addresses of network traffic, and to see to which country it belongs";
59  sigmatch_table[DETECT_GEOIP].url = "/rules/header-keywords.html#geoip";
60  sigmatch_table[DETECT_GEOIP].Setup = DetectGeoipSetupNoSupport;
63 }
64 
65 #else /* HAVE_GEOIP */
66 
67 #include <maxminddb.h>
68 
69 static int DetectGeoipMatch(DetectEngineThreadCtx *, Packet *,
70  const Signature *, const SigMatchCtx *);
71 static int DetectGeoipSetup(DetectEngineCtx *, Signature *, const char *);
72 static void DetectGeoipRegisterTests(void);
73 static void DetectGeoipDataFree(DetectEngineCtx *, void *);
74 
75 /**
76  * \brief Registration function for geoip keyword
77  * \todo add support for src_only and dst_only
78  */
79 void DetectGeoipRegister(void)
80 {
81  sigmatch_table[DETECT_GEOIP].name = "geoip";
82  sigmatch_table[DETECT_GEOIP].url = "/rules/header-keywords.html#geoip";
83  sigmatch_table[DETECT_GEOIP].desc = "keyword to match on country of src and or dst IP";
84  sigmatch_table[DETECT_GEOIP].Match = DetectGeoipMatch;
85  sigmatch_table[DETECT_GEOIP].Setup = DetectGeoipSetup;
86  sigmatch_table[DETECT_GEOIP].Free = DetectGeoipDataFree;
87  sigmatch_table[DETECT_GEOIP].RegisterTests = DetectGeoipRegisterTests;
88 }
89 
90 /**
91  * \internal
92  * \brief This function is used to initialize the geolocation MaxMind engine
93  *
94  * \retval false if the engine couldn't be initialized
95  */
96 static bool InitGeolocationEngine(DetectGeoipData *geoipdata)
97 {
98  const char *filename = NULL;
99 
100  /* Get location and name of GeoIP2 database from YAML conf */
101  (void)ConfGet("geoip-database", &filename);
102 
103  if (filename == NULL) {
104  SCLogWarning(SC_ERR_INVALID_ARGUMENT, "Unable to locate a GeoIP2"
105  "database filename in YAML conf. GeoIP rule matching "
106  "is disabled.");
107  geoipdata->mmdb_status = MMDB_FILE_OPEN_ERROR;
108  return false;
109  }
110 
111  /* Attempt to open MaxMind DB and save file handle if successful */
112  int status = MMDB_open(filename, MMDB_MODE_MMAP, &geoipdata->mmdb);
113 
114  if (status == MMDB_SUCCESS) {
115  geoipdata->mmdb_status = status;
116  return true;
117  }
118 
119  SCLogWarning(SC_ERR_INVALID_ARGUMENT, "Failed to open GeoIP2 database: %s. "
120  "Error was: %s. GeoIP rule matching is disabled.", filename,
121  MMDB_strerror(status));
122  geoipdata->mmdb_status = status;
123  return false;
124 }
125 
126 /**
127  * \internal
128  * \brief This function is used to geolocate the IP using the MaxMind libraries
129  *
130  * \param ip IPv4 to geolocate (uint32_t ip)
131  *
132  * \retval NULL if it couldn't be geolocated
133  * \retval ptr (const char *) to the country code string
134  */
135 static const char *GeolocateIPv4(const DetectGeoipData *geoipdata, uint32_t ip)
136 {
137  int mmdb_error;
138  struct sockaddr_in sa;
139  sa.sin_family = AF_INET;
140  sa.sin_port = 0;
141  sa.sin_addr.s_addr = ip;
142  MMDB_lookup_result_s result;
143  MMDB_entry_data_s entry_data;
144 
145  /* Return if no GeoIP database access available */
146  if (geoipdata->mmdb_status != MMDB_SUCCESS)
147  return NULL;
148 
149  /* Attempt to find the IPv4 address in the database */
150  result = MMDB_lookup_sockaddr((MMDB_s *)&geoipdata->mmdb,
151  (struct sockaddr*)&sa, &mmdb_error);
152  if (mmdb_error != MMDB_SUCCESS)
153  return NULL;
154 
155  /* The IPv4 address was found, so grab ISO country code if available */
156  if (result.found_entry) {
157  mmdb_error = MMDB_get_value(&result.entry, &entry_data, "country",
158  "iso_code", NULL);
159  if (mmdb_error != MMDB_SUCCESS)
160  return NULL;
161 
162  /* If ISO country code was found, then return it */
163  if (entry_data.has_data) {
164  if (entry_data.type == MMDB_DATA_TYPE_UTF8_STRING) {
165  char *country_code = SCStrndup((char *)entry_data.utf8_string,
166  entry_data.data_size);
167  return country_code;
168  }
169  }
170  }
171 
172  /* The country code for the IP was not found */
173  return NULL;
174 }
175 
176 /* Match-on conditions supported */
177 #define GEOIP_MATCH_SRC_STR "src"
178 #define GEOIP_MATCH_DST_STR "dst"
179 #define GEOIP_MATCH_BOTH_STR "both"
180 #define GEOIP_MATCH_ANY_STR "any"
181 
182 #define GEOIP_MATCH_NO_FLAG 0
183 #define GEOIP_MATCH_SRC_FLAG 1
184 #define GEOIP_MATCH_DST_FLAG 2
185 #define GEOIP_MATCH_ANY_FLAG 3 /* default src and dst*/
186 #define GEOIP_MATCH_BOTH_FLAG 4
187 #define GEOIP_MATCH_NEGATED 8
188 
189 /**
190  * \internal
191  * \brief This function is used to geolocate the IP using the MaxMind libraries
192  *
193  * \param ip IPv4 to geolocate (uint32_t ip)
194  *
195  * \retval 0 no match
196  * \retval 1 match
197  */
198 static int CheckGeoMatchIPv4(const DetectGeoipData *geoipdata, uint32_t ip)
199 {
200  int i;
201 
202  /* Attempt country code lookup for the IP address */
203  const char *country = GeolocateIPv4(geoipdata, ip);
204 
205  /* Skip further checks if did not find a country code */
206  if (country == NULL)
207  return 0;
208 
209  /* Check if NOT NEGATED match-on condition */
210  if ((geoipdata->flags & GEOIP_MATCH_NEGATED) == 0)
211  {
212  for (i = 0; i < geoipdata->nlocations; i++) {
213  if (strcmp(country, (char *)geoipdata->location[i])==0) {
214  SCFree((void *)country);
215  return 1;
216  }
217  }
218  } else {
219  /* Check if NEGATED match-on condition */
220  for (i = 0; i < geoipdata->nlocations; i++) {
221  if (strcmp(country, (char *)geoipdata->location[i])==0) {
222  SCFree((void *)country);
223  return 0; /* if one matches, rule does NOT match (negated) */
224  }
225  }
226  SCFree((void *)country);
227  return 1; /* returns 1 if no location matches (negated) */
228  }
229  SCFree((void *)country);
230  return 0;
231 }
232 
233 /**
234  * \internal
235  * \brief This function is used to match packets with a IPs in an specified country
236  *
237  * \param t pointer to thread vars
238  * \param det_ctx pointer to the pattern matcher thread
239  * \param p pointer to the current packet
240  * \param m pointer to the sigmatch that we will cast into DetectGeoipData
241  *
242  * \retval 0 no match
243  * \retval 1 match
244  */
245 static int DetectGeoipMatch(DetectEngineThreadCtx *det_ctx,
246  Packet *p, const Signature *s, const SigMatchCtx *ctx)
247 {
248  const DetectGeoipData *geoipdata = (const DetectGeoipData *)ctx;
249  int matches = 0;
250 
251  if (PKT_IS_PSEUDOPKT(p))
252  return 0;
253 
254  if (PKT_IS_IPV4(p))
255  {
256  if (geoipdata->flags & ( GEOIP_MATCH_SRC_FLAG | GEOIP_MATCH_BOTH_FLAG ))
257  {
258  if (CheckGeoMatchIPv4(geoipdata, GET_IPV4_SRC_ADDR_U32(p)))
259  {
260  if (geoipdata->flags & GEOIP_MATCH_BOTH_FLAG)
261  matches++;
262  else
263  return 1;
264  }
265  }
266  if (geoipdata->flags & ( GEOIP_MATCH_DST_FLAG | GEOIP_MATCH_BOTH_FLAG ))
267  {
268  if (CheckGeoMatchIPv4(geoipdata, GET_IPV4_DST_ADDR_U32(p)))
269  {
270  if (geoipdata->flags & GEOIP_MATCH_BOTH_FLAG)
271  matches++;
272  else
273  return 1;
274  }
275  }
276  /* if matches == 2 is because match-on is "both" */
277  if (matches == 2)
278  return 1;
279  }
280 
281  return 0;
282 }
283 
284 /**
285  * \brief This function is used to parse geoipdata
286  *
287  * \param de_ctx Pointer to the detection engine context
288  * \param str Pointer to the geoipdata value string
289  *
290  * \retval pointer to DetectGeoipData on success
291  * \retval NULL on failure
292  */
293 static DetectGeoipData *DetectGeoipDataParse (DetectEngineCtx *de_ctx, const char *str)
294 {
295  DetectGeoipData *geoipdata = NULL;
296  uint16_t pos = 0;
297  uint16_t prevpos = 0;
298  uint16_t slen = 0;
299  int skiplocationparsing = 0;
300 
301  slen = strlen(str);
302  if (slen == 0)
303  goto error;
304 
305  /* We have a correct geoip options string */
306  geoipdata = SCMalloc(sizeof(DetectGeoipData));
307  if (unlikely(geoipdata == NULL))
308  goto error;
309 
310  memset(geoipdata, 0x00, sizeof(DetectGeoipData));
311 
312  /* Parse the geoip option string */
313  while (pos <= slen)
314  {
315  /* search for ',' or end of string */
316  if (str[pos] == ',' || pos == slen)
317  {
318  if (geoipdata->flags == GEOIP_MATCH_NO_FLAG)
319  {
320  /* Parse match-on condition */
321  if (pos == slen) /* if end of option str then there are no match-on cond. */
322  {
323  /* There was NO match-on condition! we default to ANY*/
324  skiplocationparsing = 0;
325  geoipdata->flags |= GEOIP_MATCH_ANY_FLAG;
326  } else {
327  skiplocationparsing = 1;
328  if (strncmp(&str[prevpos], GEOIP_MATCH_SRC_STR, pos-prevpos) == 0)
329  geoipdata->flags |= GEOIP_MATCH_SRC_FLAG;
330  else if (strncmp(&str[prevpos], GEOIP_MATCH_DST_STR, pos-prevpos) == 0)
331  geoipdata->flags |= GEOIP_MATCH_DST_FLAG;
332  else if (strncmp(&str[prevpos], GEOIP_MATCH_BOTH_STR, pos-prevpos) == 0)
333  geoipdata->flags |= GEOIP_MATCH_BOTH_FLAG;
334  else if (strncmp(&str[prevpos], GEOIP_MATCH_ANY_STR, pos-prevpos) == 0)
335  geoipdata->flags |= GEOIP_MATCH_ANY_FLAG;
336  else {
337  /* There was NO match-on condition! we default to ANY*/
338  skiplocationparsing = 0;
339  geoipdata->flags |= GEOIP_MATCH_ANY_FLAG;
340  }
341  }
342  }
343  if (geoipdata->flags != GEOIP_MATCH_NO_FLAG && skiplocationparsing == 0)
344  {
345  /* Parse location string: for now just the country code(s) */
346  if (str[prevpos] == '!') {
347  geoipdata->flags |= GEOIP_MATCH_NEGATED;
348  prevpos++; /* dot not copy the ! */
349  }
350 
351  if (geoipdata->nlocations >= GEOOPTION_MAXLOCATIONS) {
352  SCLogError(SC_ERR_INVALID_ARGUMENT, "too many arguements for geoip keyword");
353  goto error;
354  }
355 
356  if (pos-prevpos > GEOOPTION_MAXSIZE)
357  strlcpy((char *)geoipdata->location[geoipdata->nlocations], &str[prevpos],
358  GEOOPTION_MAXSIZE);
359  else
360  strlcpy((char *)geoipdata->location[geoipdata->nlocations], &str[prevpos],
361  pos-prevpos+1);
362 
363  if (geoipdata->nlocations < GEOOPTION_MAXLOCATIONS)
364  geoipdata->nlocations++;
365  }
366  prevpos = pos+1;
367  skiplocationparsing = 0; /* match-on condition for sure has been parsed already */
368  }
369  pos++;
370  }
371 
372  SCLogDebug("GeoIP: %"PRIu32" countries loaded", geoipdata->nlocations);
373  for (int i=0; i<geoipdata->nlocations; i++)
374  SCLogDebug("GeoIP country code: %s", geoipdata->location[i]);
375 
376  SCLogDebug("flags %02X", geoipdata->flags);
377  if (geoipdata->flags & GEOIP_MATCH_NEGATED) {
378  SCLogDebug("negated geoip");
379  }
380 
381  /* init geo engine, but not when running as unittests */
382  if (!(RunmodeIsUnittests())) {
383  /* Initialize the geolocation engine */
384  if (InitGeolocationEngine(geoipdata) == false)
385  goto error;
386  }
387 
388  return geoipdata;
389 
390 error:
391  if (geoipdata != NULL)
392  DetectGeoipDataFree(de_ctx, geoipdata);
393  return NULL;
394 }
395 
396 /**
397  * \internal
398  * \brief this function is used to add the geoip option into the signature
399  *
400  * \param de_ctx pointer to the Detection Engine Context
401  * \param s pointer to the Current Signature
402  * \param optstr pointer to the user provided options
403  *
404  * \retval 0 on Success
405  * \retval -1 on Failure
406  */
407 static int DetectGeoipSetup(DetectEngineCtx *de_ctx, Signature *s, const char *optstr)
408 {
409  DetectGeoipData *geoipdata = NULL;
410  SigMatch *sm = NULL;
411 
412  geoipdata = DetectGeoipDataParse(de_ctx, optstr);
413  if (geoipdata == NULL)
414  goto error;
415 
416  /* Get this into a SigMatch and put it in the Signature. */
417  sm = SigMatchAlloc();
418  if (sm == NULL)
419  goto error;
420 
421  sm->type = DETECT_GEOIP;
422  sm->ctx = (SigMatchCtx *)geoipdata;
423 
426 
427  return 0;
428 
429 error:
430  if (geoipdata != NULL)
431  DetectGeoipDataFree(de_ctx, geoipdata);
432  if (sm != NULL)
433  SCFree(sm);
434  return -1;
435 
436 }
437 
438 /**
439  * \brief this function will free memory associated with DetectGeoipData
440  *
441  * \param geoipdata pointer to DetectGeoipData
442  */
443 static void DetectGeoipDataFree(DetectEngineCtx *de_ctx, void *ptr)
444 {
445  if (ptr != NULL) {
446  DetectGeoipData *geoipdata = (DetectGeoipData *)ptr;
447  if (geoipdata->mmdb_status == MMDB_SUCCESS)
448  MMDB_close(&geoipdata->mmdb);
449  SCFree(geoipdata);
450  }
451 }
452 
453 #ifdef UNITTESTS
454 
455 static int GeoipParseTest(const char *rule, int ncountries, const char **countries, uint32_t flags)
456 {
457  DetectEngineCtx *de_ctx = NULL;
458  Signature *s = NULL;
459  DetectGeoipData *data = NULL;
460 
462  FAIL_IF(de_ctx == NULL);
463  de_ctx->flags |= DE_QUIET;
464 
465  de_ctx->sig_list = SigInit(de_ctx, rule);
466  FAIL_IF(de_ctx->sig_list == NULL);
467 
468  s = de_ctx->sig_list;
469  FAIL_IF(s->sm_lists_tail[DETECT_SM_LIST_MATCH] == NULL);
470 
471  FAIL_IF(s->sm_lists_tail[DETECT_SM_LIST_MATCH]->type != DETECT_GEOIP);
472 
473  data = (DetectGeoipData *)s->sm_lists_tail[DETECT_SM_LIST_MATCH]->ctx;
474  FAIL_IF(data->flags != flags);
475 
476  FAIL_IF(data->nlocations!=ncountries);
477 
478  for (int i=0; i<ncountries; i++)
479  {
480  FAIL_IF(strcmp((char *)data->location[i],countries[i])!=0);
481  }
482 
484  PASS;
485 }
486 
487 static int GeoipParseTest01(void)
488 {
489  const char *ccodes[1] = {"US"};
490  return GeoipParseTest("alert tcp any any -> any any (geoip:US;sid:1;)", 1, ccodes,
491  GEOIP_MATCH_ANY_FLAG);
492 }
493 
494 static int GeoipParseTest02(void)
495 {
496  const char *ccodes[1] = {"US"};
497  return GeoipParseTest("alert tcp any any -> any any (geoip:!US;sid:1;)", 1, ccodes,
498  GEOIP_MATCH_ANY_FLAG | GEOIP_MATCH_NEGATED);
499 }
500 
501 static int GeoipParseTest03(void)
502 {
503  const char *ccodes[1] = {"US"};
504  return GeoipParseTest("alert tcp any any -> any any (geoip:!US;sid:1;)", 1, ccodes,
505  GEOIP_MATCH_ANY_FLAG | GEOIP_MATCH_NEGATED);
506 }
507 
508 static int GeoipParseTest04(void)
509 {
510  const char *ccodes[1] = {"US"};
511  return GeoipParseTest("alert tcp any any -> any any (geoip:src,US;sid:1;)", 1, ccodes,
512  GEOIP_MATCH_SRC_FLAG);
513 }
514 
515 static int GeoipParseTest05(void)
516 {
517  const char *ccodes[1] = {"US"};
518  return GeoipParseTest("alert tcp any any -> any any (geoip:dst,!US;sid:1;)", 1, ccodes,
519  GEOIP_MATCH_DST_FLAG | GEOIP_MATCH_NEGATED);
520 }
521 
522 static int GeoipParseTest06(void)
523 {
524  const char *ccodes[3] = {"US", "ES", "UK"};
525  return GeoipParseTest("alert tcp any any -> any any (geoip:US,ES,UK;sid:1;)", 3, ccodes,
526  GEOIP_MATCH_ANY_FLAG);
527 }
528 
529 static int GeoipParseTest07(void)
530 {
531  const char *ccodes[3] = {"US", "ES", "UK"};
532  return GeoipParseTest("alert tcp any any -> any any (geoip:both,!US,ES,UK;sid:1;)", 3, ccodes,
533  GEOIP_MATCH_BOTH_FLAG | GEOIP_MATCH_NEGATED);
534 }
535 
536 
537 
538 #endif /* UNITTESTS */
539 
540 /**
541  * \internal
542  * \brief This function registers unit tests for DetectGeoip
543  */
544 static void DetectGeoipRegisterTests(void)
545 {
546 #ifdef UNITTESTS
547  UtRegisterTest("GeoipParseTest01", GeoipParseTest01);
548  UtRegisterTest("GeoipParseTest02", GeoipParseTest02);
549  UtRegisterTest("GeoipParseTest03", GeoipParseTest03);
550  UtRegisterTest("GeoipParseTest04", GeoipParseTest04);
551  UtRegisterTest("GeoipParseTest05", GeoipParseTest05);
552  UtRegisterTest("GeoipParseTest06", GeoipParseTest06);
553  UtRegisterTest("GeoipParseTest07", GeoipParseTest07);
554 
555 #endif /* UNITTESTS */
556 }
557 
558 #endif /* HAVE_GEOIP */
SigTableElmt_::url
const char * url
Definition: detect.h:1204
detect-engine.h
DetectGeoipRegister
void DetectGeoipRegister(void)
Registration function for geoip keyword (no libgeoip support)
Definition: detect-geoip.c:55
SigTableElmt_::desc
const char * desc
Definition: detect.h:1203
SigTableElmt_::Free
void(* Free)(DetectEngineCtx *, void *)
Definition: detect.h:1192
SigTableElmt_::name
const char * name
Definition: detect.h:1201
PKT_IS_PSEUDOPKT
#define PKT_IS_PSEUDOPKT(p)
return 1 if the packet is a pseudo packet
Definition: decode.h:1125
unlikely
#define unlikely(expr)
Definition: util-optimize.h:35
UtRegisterTest
void UtRegisterTest(const char *name, int(*TestFn)(void))
Register unit test.
Definition: util-unittest.c:103
SCLogDebug
#define SCLogDebug(...)
Definition: util-debug.h:298
SigInit
Signature * SigInit(DetectEngineCtx *, const char *)
Parses a signature and adds it to the Detection Engine Context.
Definition: detect-parse.c:2023
DetectEngineCtx_
main detection engine ctx
Definition: detect.h:761
DetectEngineCtxFree
void DetectEngineCtxFree(DetectEngineCtx *)
Free a DetectEngineCtx::
Definition: detect-engine.c:2030
DE_QUIET
#define DE_QUIET
Definition: detect.h:292
SigTableElmt_::Setup
int(* Setup)(DetectEngineCtx *, Signature *, const char *)
Definition: detect.h:1187
util-unittest.h
util-unittest-helper.h
strlcpy
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: util-strlcpyu.c:43
ConfGet
int ConfGet(const char *name, const char **vptr)
Retrieve the value of a configuration node.
Definition: conf.c:331
decode.h
PASS
#define PASS
Pass the test.
Definition: util-unittest.h:105
de_ctx
DetectEngineCtx * de_ctx
Definition: fuzz_siginit.c:17
DetectEngineThreadCtx_
Definition: detect.h:1004
DETECT_GEOIP
@ DETECT_GEOIP
Definition: detect-engine-register.h:75
detect-engine-mpm.h
detect.h
DETECT_SM_LIST_MATCH
@ DETECT_SM_LIST_MATCH
Definition: detect.h:89
SC_ERR_INVALID_ARGUMENT
@ SC_ERR_INVALID_ARGUMENT
Definition: util-error.h:43
SigMatch_::ctx
SigMatchCtx * ctx
Definition: detect.h:321
Signature_::flags
uint32_t flags
Definition: detect.h:523
Packet_
Definition: decode.h:411
SigTableElmt_::Match
int(* Match)(DetectEngineThreadCtx *, Packet *, const Signature *, const SigMatchCtx *)
Definition: detect.h:1171
RunmodeIsUnittests
int RunmodeIsUnittests(void)
Definition: suricata.c:264
SigMatchAlloc
SigMatch * SigMatchAlloc(void)
Definition: detect-parse.c:235
SigMatch_::type
uint8_t type
Definition: detect.h:319
SigMatchCtx_
Used to start a pointer to SigMatch context Should never be dereferenced without casting to something...
Definition: detect.h:313
util-mem.h
SC_ERR_NO_GEOIP_SUPPORT
@ SC_ERR_NO_GEOIP_SUPPORT
Definition: util-error.h:259
FAIL_IF
#define FAIL_IF(expr)
Fail a test if expression evaluates to false.
Definition: util-unittest.h:71
flags
uint8_t flags
Definition: decode-gre.h:0
suricata-common.h
SCStrndup
#define SCStrndup(s, n)
Definition: util-mem.h:59
sigmatch_table
SigTableElmt sigmatch_table[DETECT_TBLSIZE]
Definition: detect-parse.c:73
SCLogError
#define SCLogError(err_code,...)
Macro used to log ERROR messages.
Definition: util-debug.h:257
DetectEngineCtx_::sig_list
Signature * sig_list
Definition: detect.h:767
SCMalloc
#define SCMalloc(sz)
Definition: util-mem.h:47
str
#define str(s)
Definition: suricata-common.h:273
SCLogWarning
#define SCLogWarning(err_code,...)
Macro used to log WARNING messages.
Definition: util-debug.h:244
SCFree
#define SCFree(p)
Definition: util-mem.h:61
detect-parse.h
Signature_
Signature container.
Definition: detect.h:522
SigMatch_
a single match condition for a signature
Definition: detect.h:318
detect-geoip.h
DetectEngineCtxInit
DetectEngineCtx * DetectEngineCtxInit(void)
Definition: detect-engine.c:1985
DetectEngineCtx_::flags
uint8_t flags
Definition: detect.h:762
GET_IPV4_SRC_ADDR_U32
#define GET_IPV4_SRC_ADDR_U32(p)
Definition: decode.h:215
GET_IPV4_DST_ADDR_U32
#define GET_IPV4_DST_ADDR_U32(p)
Definition: decode.h:216
PKT_IS_IPV4
#define PKT_IS_IPV4(p)
Definition: decode.h:254
SigMatchAppendSMToList
void SigMatchAppendSMToList(Signature *s, SigMatch *new, int list)
Append a SigMatch to the list type.
Definition: detect-parse.c:349
debug.h
SigTableElmt_::RegisterTests
void(* RegisterTests)(void)
Definition: detect.h:1193
SIG_FLAG_REQUIRE_PACKET
#define SIG_FLAG_REQUIRE_PACKET
Definition: detect.h:223