suricata
detect-http-client-body.c
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1 /* Copyright (C) 2007-2021 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  * \ingroup httplayer
20  *
21  * @{
22  */
23 
24 
25 /**
26  * \file
27  *
28  * \author Anoop Saldanha <anoopsaldanha@gmail.com>
29  *
30  * Implements support for the http_client_body keyword
31  */
32 
33 #include "suricata-common.h"
34 #include "threads.h"
35 #include "decode.h"
36 
37 #include "detect.h"
38 #include "detect-parse.h"
39 #include "detect-engine.h"
40 #include "detect-engine-mpm.h"
41 #include "detect-engine-state.h"
44 #include "detect-content.h"
45 #include "detect-pcre.h"
46 
47 #include "flow.h"
48 #include "flow-var.h"
49 #include "flow-util.h"
50 
51 #include "util-debug.h"
52 #include "util-unittest.h"
53 #include "util-unittest-helper.h"
54 #include "util-spm.h"
55 
56 #include "app-layer.h"
57 #include "app-layer-parser.h"
58 #include "app-layer-htp.h"
60 #include "stream-tcp.h"
61 
62 static int DetectHttpClientBodySetup(DetectEngineCtx *, Signature *, const char *);
63 static int DetectHttpClientBodySetupSticky(DetectEngineCtx *de_ctx, Signature *s, const char *str);
64 #ifdef UNITTESTS
65 static void DetectHttpClientBodyRegisterTests(void);
66 #endif
67 static void DetectHttpClientBodySetupCallback(const DetectEngineCtx *de_ctx,
68  Signature *s);
69 static int g_http_client_body_buffer_id = 0;
70 
71 static int DetectEngineInspectBufferHttpBody(DetectEngineCtx *de_ctx,
73  const Signature *s, Flow *f, uint8_t flags, void *alstate, void *txv, uint64_t tx_id);
74 
75 static int PrefilterMpmHttpRequestBodyRegister(DetectEngineCtx *de_ctx, SigGroupHead *sgh,
76  MpmCtx *mpm_ctx, const DetectBufferMpmRegistery *mpm_reg, int list_id);
77 
78 /**
79  * \brief Registers the keyword handlers for the "http_client_body" keyword.
80  */
82 {
83  /* http_client_body content modifier */
84  sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].name = "http_client_body";
85  sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].desc = "content modifier to match only on HTTP request-body";
86  sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].url = "/rules/http-keywords.html#http-client-body";
87  sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].Setup = DetectHttpClientBodySetup;
88 #ifdef UNITTESTS
90 #endif
94 
95  /* http.request_body sticky buffer */
96  sigmatch_table[DETECT_HTTP_REQUEST_BODY].name = "http.request_body";
97  sigmatch_table[DETECT_HTTP_REQUEST_BODY].desc = "sticky buffer to match the HTTP request body buffer";
98  sigmatch_table[DETECT_HTTP_REQUEST_BODY].url = "/rules/http-keywords.html#http-client-body";
99  sigmatch_table[DETECT_HTTP_REQUEST_BODY].Setup = DetectHttpClientBodySetupSticky;
102 
104  HTP_REQUEST_BODY, DetectEngineInspectBufferHttpBody, NULL);
105 
106  DetectAppLayerMpmRegister2("http_client_body", SIG_FLAG_TOSERVER, 2,
107  PrefilterMpmHttpRequestBodyRegister, NULL, ALPROTO_HTTP1, HTP_REQUEST_BODY);
108 
109  DetectBufferTypeSetDescriptionByName("http_client_body",
110  "http request body");
111 
112  DetectBufferTypeRegisterSetupCallback("http_client_body",
113  DetectHttpClientBodySetupCallback);
114 
115  g_http_client_body_buffer_id = DetectBufferTypeGetByName("http_client_body");
116 }
117 
118 static void DetectHttpClientBodySetupCallback(const DetectEngineCtx *de_ctx,
119  Signature *s)
120 {
121  SCLogDebug("callback invoked by %u", s->id);
123 
124  /* client body needs to be inspected in sync with stream if possible */
126 }
127 
128 /**
129  * \brief The setup function for the http_client_body keyword for a signature.
130  *
131  * \param de_ctx Pointer to the detection engine context.
132  * \param s Pointer to signature for the current Signature being parsed
133  * from the rules.
134  * \param m Pointer to the head of the SigMatchs for the current rule
135  * being parsed.
136  * \param arg Pointer to the string holding the keyword value.
137  *
138  * \retval 0 On success
139  * \retval -1 On failure
140  */
141 int DetectHttpClientBodySetup(DetectEngineCtx *de_ctx, Signature *s, const char *arg)
142 {
144  g_http_client_body_buffer_id, ALPROTO_HTTP1);
145 }
146 
147 /**
148  * \brief this function setup the http.request_body keyword used in the rule
149  *
150  * \param de_ctx Pointer to the Detection Engine Context
151  * \param s Pointer to the Signature to which the current keyword belongs
152  * \param str Should hold an empty string always
153  *
154  * \retval 0 On success
155  */
156 static int DetectHttpClientBodySetupSticky(DetectEngineCtx *de_ctx, Signature *s, const char *str)
157 {
158  if (DetectBufferSetActiveList(s, g_http_client_body_buffer_id) < 0)
159  return -1;
161  return -1;
162  return 0;
163 }
164 
165 static inline HtpBody *GetRequestBody(htp_tx_t *tx)
166 {
167  HtpTxUserData *htud = (HtpTxUserData *)htp_tx_get_user_data(tx);
168  if (htud == NULL) {
169  SCLogDebug("no htud");
170  return NULL;
171  }
172 
173  return &htud->request_body;
174 }
175 
177  int list_id;
179  const MpmCtx *mpm_ctx;
182 
183 static void PrefilterMpmHttpRequestBodyFree(void *ptr)
184 {
185  SCFree(ptr);
186 }
187 
188 static inline InspectionBuffer *HttpRequestBodyXformsGetDataCallback(DetectEngineThreadCtx *det_ctx,
189  const DetectEngineTransforms *transforms, const int list_id, InspectionBuffer *base_buffer)
190 {
191  InspectionBuffer *buffer = InspectionBufferGet(det_ctx, list_id);
192  if (buffer->inspect != NULL)
193  return buffer;
194 
195  InspectionBufferSetup(det_ctx, list_id, buffer, base_buffer->inspect, base_buffer->inspect_len);
196  buffer->inspect_offset = base_buffer->inspect_offset;
197  InspectionBufferApplyTransforms(buffer, transforms);
198  SCLogDebug("xformed buffer %p size %u", buffer, buffer->inspect_len);
199  SCReturnPtr(buffer, "InspectionBuffer");
200 }
201 
202 static InspectionBuffer *HttpRequestBodyGetDataCallback(DetectEngineThreadCtx *det_ctx,
203  const DetectEngineTransforms *transforms, Flow *f, const uint8_t flow_flags, void *txv,
204  const int list_id, const int base_id)
205 {
206  SCEnter();
207 
208  InspectionBuffer *buffer = InspectionBufferGet(det_ctx, base_id);
209  if (base_id != list_id && buffer->inspect != NULL)
210  return HttpRequestBodyXformsGetDataCallback(det_ctx, transforms, list_id, buffer);
211  else if (buffer->inspect != NULL)
212  return buffer;
213 
214  htp_tx_t *tx = txv;
215  HtpState *htp_state = f->alstate;
216  const uint8_t flags = flow_flags;
217 
218  HtpBody *body = GetRequestBody(tx);
219  if (body == NULL) {
220  return NULL;
221  }
222 
223  /* no new data */
224  if (body->body_inspected == body->content_len_so_far) {
225  SCLogDebug("no new data");
226  return NULL;
227  }
228 
229  HtpBodyChunk *cur = body->first;
230  if (cur == NULL) {
231  SCLogDebug("No http chunks to inspect for this transaction");
232  return NULL;
233  }
234 
235  SCLogDebug("request.body_limit %u request_body.content_len_so_far %" PRIu64
236  ", request.inspect_min_size %" PRIu32 ", EOF %s, progress > body? %s",
237  htp_state->cfg->request.body_limit, body->content_len_so_far,
238  htp_state->cfg->request.inspect_min_size, flags & STREAM_EOF ? "true" : "false",
240  HTP_REQUEST_BODY)
241  ? "true"
242  : "false");
243 
244  if (!htp_state->cfg->http_body_inline) {
245  /* inspect the body if the transfer is complete or we have hit
246  * our body size limit */
247  if ((htp_state->cfg->request.body_limit == 0 ||
248  body->content_len_so_far < htp_state->cfg->request.body_limit) &&
249  body->content_len_so_far < htp_state->cfg->request.inspect_min_size &&
250  !(AppLayerParserGetStateProgress(IPPROTO_TCP, ALPROTO_HTTP1, tx, flags) >
251  HTP_REQUEST_BODY) &&
252  !(flags & STREAM_EOF)) {
253  SCLogDebug("we still haven't seen the entire request body. "
254  "Let's defer body inspection till we see the "
255  "entire body.");
256  return NULL;
257  }
258  }
259 
260  /* get the inspect buffer
261  *
262  * make sure that we have at least the configured inspect_win size.
263  * If we have more, take at least 1/4 of the inspect win size before
264  * the new data.
265  */
266  uint64_t offset = 0;
267  if (body->body_inspected > htp_state->cfg->request.inspect_min_size) {
269  uint64_t inspect_win = body->content_len_so_far - body->body_inspected;
270  SCLogDebug("inspect_win %"PRIu64, inspect_win);
271  if (inspect_win < htp_state->cfg->request.inspect_window) {
272  uint64_t inspect_short = htp_state->cfg->request.inspect_window - inspect_win;
273  if (body->body_inspected < inspect_short)
274  offset = 0;
275  else
276  offset = body->body_inspected - inspect_short;
277  } else {
278  offset = body->body_inspected - (htp_state->cfg->request.inspect_window / 4);
279  }
280  }
281 
282  const uint8_t *data;
283  uint32_t data_len;
284 
286  &data, &data_len, offset);
287  InspectionBufferSetup(det_ctx, base_id, buffer, data, data_len);
288  buffer->inspect_offset = offset;
289  body->body_inspected = body->content_len_so_far;
290  SCLogDebug("body->body_inspected now: %" PRIu64, body->body_inspected);
291 
292  if (base_id != list_id) {
293  buffer = HttpRequestBodyXformsGetDataCallback(det_ctx, transforms, list_id, buffer);
294  }
295  SCReturnPtr(buffer, "InspectionBuffer");
296 }
297 
298 static int DetectEngineInspectBufferHttpBody(DetectEngineCtx *de_ctx,
300  const Signature *s, Flow *f, uint8_t flags, void *alstate, void *txv, uint64_t tx_id)
301 {
302  bool eof =
303  (AppLayerParserGetStateProgress(f->proto, f->alproto, txv, flags) > engine->progress);
304  const InspectionBuffer *buffer = HttpRequestBodyGetDataCallback(
305  det_ctx, engine->v2.transforms, f, flags, txv, engine->sm_list, engine->sm_list_base);
306  if (buffer == NULL || buffer->inspect == NULL) {
308  }
309 
310  const uint32_t data_len = buffer->inspect_len;
311  const uint8_t *data = buffer->inspect;
312  const uint64_t offset = buffer->inspect_offset;
313 
314  uint8_t ci_flags = eof ? DETECT_CI_FLAGS_END : 0;
315  ci_flags |= (offset == 0 ? DETECT_CI_FLAGS_START : 0);
316  ci_flags |= buffer->flags;
317 
318  det_ctx->discontinue_matching = 0;
319  det_ctx->buffer_offset = 0;
320  det_ctx->inspection_recursion_counter = 0;
321 
322  /* Inspect all the uricontents fetched on each
323  * transaction at the app layer */
324  int r = DetectEngineContentInspection(de_ctx, det_ctx, s, engine->smd, NULL, f, (uint8_t *)data,
326  if (r == 1) {
328  }
329 
330  if (flags & STREAM_TOSERVER) {
331  if (AppLayerParserGetStateProgress(IPPROTO_TCP, ALPROTO_HTTP1, txv, flags) >
332  HTP_REQUEST_BODY)
334  } else {
335  if (AppLayerParserGetStateProgress(IPPROTO_TCP, ALPROTO_HTTP1, txv, flags) >
336  HTP_RESPONSE_BODY)
338  }
340 }
341 
342 /** \brief HTTP Request body callback
343  *
344  * \param det_ctx detection engine thread ctx
345  * \param pectx inspection context
346  * \param p packet to inspect
347  * \param f flow to inspect
348  * \param txv tx to inspect
349  * \param idx transaction id
350  * \param flags STREAM_* flags including direction
351  */
352 static void PrefilterTxHttpRequestBody(DetectEngineThreadCtx *det_ctx, const void *pectx, Packet *p,
353  Flow *f, void *txv, const uint64_t idx, const uint8_t flags)
354 {
355  SCEnter();
356 
357  const PrefilterMpmHttpRequestBody *ctx = (const PrefilterMpmHttpRequestBody *)pectx;
358  const MpmCtx *mpm_ctx = ctx->mpm_ctx;
359  const int list_id = ctx->list_id;
360 
361  InspectionBuffer *buffer = HttpRequestBodyGetDataCallback(
362  det_ctx, ctx->transforms, f, flags, txv, list_id, ctx->base_list_id);
363  if (buffer == NULL)
364  return;
365 
366  if (buffer->inspect_len >= mpm_ctx->minlen) {
367  (void)mpm_table[mpm_ctx->mpm_type].Search(
368  mpm_ctx, &det_ctx->mtcu, &det_ctx->pmq, buffer->inspect, buffer->inspect_len);
369  }
370 }
371 
372 static int PrefilterMpmHttpRequestBodyRegister(DetectEngineCtx *de_ctx, SigGroupHead *sgh,
373  MpmCtx *mpm_ctx, const DetectBufferMpmRegistery *mpm_reg, int list_id)
374 {
375  PrefilterMpmHttpRequestBody *pectx = SCCalloc(1, sizeof(*pectx));
376  if (pectx == NULL)
377  return -1;
378  pectx->list_id = list_id;
379  pectx->base_list_id = mpm_reg->sm_list_base;
380  SCLogDebug("list_id %d base_list_id %d", list_id, pectx->base_list_id);
381  pectx->mpm_ctx = mpm_ctx;
382  pectx->transforms = &mpm_reg->transforms;
383 
384  return PrefilterAppendTxEngine(de_ctx, sgh, PrefilterTxHttpRequestBody, mpm_reg->app_v2.alproto,
385  mpm_reg->app_v2.tx_min_progress, pectx, PrefilterMpmHttpRequestBodyFree,
386  mpm_reg->pname);
387 }
388 
389 #ifdef UNITTESTS
391 #endif /* UNITTESTS */
392 
393 /**
394  * @}
395  */
HtpState_::cfg
const struct HTPCfgRec_ * cfg
Definition: app-layer-htp.h:257
DetectEngineAppInspectionEngine_
Definition: detect.h:398
SigTableElmt_::url
const char * url
Definition: detect.h:1270
DetectSignatureSetAppProto
int DetectSignatureSetAppProto(Signature *s, AppProto alproto)
Definition: detect-parse.c:1490
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MpmCtx_::mpm_type
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SIGMATCH_INFO_STICKY_BUFFER
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Definition: detect.h:1477
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Definition: detect.h:1269
offset
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Definition: util-streaming-buffer.h:0
DETECT_ENGINE_CONTENT_INSPECTION_MODE_STATE
@ DETECT_ENGINE_CONTENT_INSPECTION_MODE_STATE
Definition: detect-engine-content-inspection.h:36
DETECT_CI_FLAGS_START
#define DETECT_CI_FLAGS_START
Definition: detect-engine-content-inspection.h:39
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SIGMATCH_INFO_CONTENT_MODIFIER
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Definition: detect.h:1475
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const char * name
Definition: detect.h:1267
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SigGroupHead_
Container for matching data for a signature group.
Definition: detect.h:1425
DetectHttpClientBodyRegisterTests
void DetectHttpClientBodyRegisterTests(void)
Definition: detect-http-client-body.c:2941
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DetectEngineTransforms
Definition: detect.h:379
SIG_FLAG_INIT_NEED_FLUSH
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Definition: detect.h:263
PrefilterMpmHttpRequestBody::list_id
int list_id
Definition: detect-http-client-body.c:177
SCLogDebug
#define SCLogDebug(...)
Definition: util-debug.h:298
HTPCfgDir_::body_limit
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Definition: app-layer-htp.h:155
Flow_::proto
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Definition: flow.h:375
DETECT_AL_HTTP_CLIENT_BODY
@ DETECT_AL_HTTP_CLIENT_BODY
Definition: detect-engine-register.h:127
DetectBufferMpmRegistery_::transforms
DetectEngineTransforms transforms
Definition: detect.h:648
AppLayerParserGetStateProgress
int AppLayerParserGetStateProgress(uint8_t ipproto, AppProto alproto, void *alstate, uint8_t flags)
get the progress value for a tx/protocol
Definition: app-layer-parser.c:1095
InspectionBuffer
Definition: detect.h:345
threads.h
Flow_
Flow data structure.
Definition: flow.h:353
DetectBufferTypeRegisterSetupCallback
void DetectBufferTypeRegisterSetupCallback(const char *name, void(*SetupCallback)(const DetectEngineCtx *, Signature *))
Definition: detect-engine.c:1253
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PrefilterRuleStore pmq
Definition: detect.h:1167
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Definition: detect.h:1261
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struct DetectBufferMpmRegistery_::@87::@89 app_v2
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Definition: detect.h:811
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Definition: app-layer-htp.h:229
detect-http-client-body.h
DetectEngineAppInspectionEngine_::sm_list_base
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Definition: detect.h:405
DetectBufferMpmRegistery_
one time registration of keywords at start up
Definition: detect.h:634
InspectionBuffer::flags
uint8_t flags
Definition: detect.h:349
SignatureInitData_::init_flags
uint32_t init_flags
Definition: detect.h:511
DetectEngineContentInspection
int DetectEngineContentInspection(DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx, const Signature *s, const SigMatchData *smd, Packet *p, Flow *f, const uint8_t *buffer, uint32_t buffer_len, uint32_t stream_start_offset, uint8_t flags, uint8_t inspection_mode)
Run the actual payload match functions.
Definition: detect-engine-content-inspection.c:102
StreamingBufferGetDataAtOffset
int StreamingBufferGetDataAtOffset(const StreamingBuffer *sb, const uint8_t **data, uint32_t *data_len, uint64_t offset)
Definition: util-streaming-buffer.c:849
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int(* Setup)(DetectEngineCtx *, Signature *, const char *)
Definition: detect.h:1252
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struct DetectEngineAppInspectionEngine_::@84 v2
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struct PrefilterMpmHttpRequestBody PrefilterMpmHttpRequestBody
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Definition: app-layer-htp.h:157
DetectEngineThreadCtx_::mtcu
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Definition: detect.h:1165
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Definition: detect-engine.c:1360
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Definition: app-layer-htp.h:192
DETECT_HTTP_REQUEST_BODY
@ DETECT_HTTP_REQUEST_BODY
Definition: detect-engine-register.h:128
HtpState_
Definition: app-layer-htp.h:247
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PrefilterMpmHttpRequestBody
Definition: detect-http-client-body.c:176
DetectBufferTypeGetByName
int DetectBufferTypeGetByName(const char *name)
Definition: detect-engine.c:1077
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Definition: detect.h:404
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Definition: detect.h:236
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int http_body_inline
Definition: app-layer-htp.h:171
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Definition: fuzz_siginit.c:17
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const DetectEngineTransforms * transforms
Definition: detect-http-client-body.c:180
DetectEngineThreadCtx_
Definition: detect.h:1060
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uint32_t inspect_min_size
Definition: app-layer-htp.h:156
AppLayerHtpEnableRequestBodyCallback
void AppLayerHtpEnableRequestBodyCallback(void)
Sets a flag that informs the HTP app layer that some module in the engine needs the http request body...
Definition: app-layer-htp.c:461
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#define SCEnter(...)
Definition: util-debug.h:300
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detect-http-client-body.c
Handle HTTP request body match corresponding to http_client_body keyword.
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DETECT_ENGINE_INSPECT_SIG_MATCH
#define DETECT_ENGINE_INSPECT_SIG_MATCH
Definition: detect-engine-state.h:39
InspectionBuffer::inspect_offset
uint64_t inspect_offset
Definition: detect.h:347
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uint16_t alternative
Definition: detect.h:1265
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MpmCtx_::minlen
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Definition: util-mpm.h:99
BUG_ON
#define BUG_ON(x)
Definition: suricata-common.h:281
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int DetectEngineContentModifierBufferSetup(DetectEngineCtx *de_ctx, Signature *s, const char *arg, int sm_type, int sm_list, AppProto alproto)
Definition: detect-parse.c:146
Packet_
Definition: decode.h:427
DETECT_CI_FLAGS_END
#define DETECT_CI_FLAGS_END
Definition: detect-engine-content-inspection.h:40
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:225
Signature_::init_data
SignatureInitData * init_data
Definition: detect.h:619
SCReturnPtr
#define SCReturnPtr(x, type)
Definition: util-debug.h:316
detect-engine-state.h
Data structures and function prototypes for keeping state for the detection engine.
MpmTableElmt_::Search
uint32_t(* Search)(const struct MpmCtx_ *, struct MpmThreadCtx_ *, PrefilterRuleStore *, const uint8_t *, uint32_t)
Definition: util-mpm.h:165
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#define DETECT_ENGINE_INSPECT_SIG_CANT_MATCH
Definition: detect-engine-state.h:40
detect-engine-content-inspection.h
DetectEngineThreadCtx_::discontinue_matching
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Definition: detect.h:1127
DetectEngineAppInspectionEngine_::smd
SigMatchData * smd
Definition: detect.h:415
PrefilterMpmHttpRequestBody::base_list_id
int base_list_id
Definition: detect-http-client-body.c:178
DetectAppLayerMpmRegister2
void DetectAppLayerMpmRegister2(const char *name, int direction, int priority, int(*PrefilterRegister)(DetectEngineCtx *de_ctx, SigGroupHead *sgh, MpmCtx *mpm_ctx, const DetectBufferMpmRegistery *mpm_reg, int list_id), InspectionBufferGetDataPtr GetData, AppProto alproto, int tx_min_progress)
register a MPM engine
Definition: detect-engine-mpm.c:89
HtpBody_
Definition: app-layer-htp.h:191
DetectBufferMpmRegistery_::pname
char pname[32]
Definition: detect.h:636
flags
uint8_t flags
Definition: decode-gre.h:0
suricata-common.h
PrefilterMpmHttpRequestBody::mpm_ctx
const MpmCtx * mpm_ctx
Definition: detect-http-client-body.c:179
HTPCfgRec_::request
HTPCfgDir request
Definition: app-layer-htp.h:178
InspectionBufferApplyTransforms
void InspectionBufferApplyTransforms(InspectionBuffer *buffer, const DetectEngineTransforms *transforms)
Definition: detect-engine.c:1543
HtpBodyChunk_
Definition: app-layer-htp.h:183
ALPROTO_HTTP1
@ ALPROTO_HTTP1
Definition: app-layer-protos.h:30
sigmatch_table
SigTableElmt sigmatch_table[DETECT_TBLSIZE]
Definition: detect-parse.c:73
DetectEngineThreadCtx_::inspection_recursion_counter
int inspection_recursion_counter
Definition: detect.h:1144
DetectHttpClientBodyRegister
void DetectHttpClientBodyRegister(void)
Registers the keyword handlers for the "http_client_body" keyword.
Definition: detect-http-client-body.c:81
util-spm.h
HtpTxUserData_
Definition: app-layer-htp.h:214
DETECT_ENGINE_INSPECT_SIG_NO_MATCH
#define DETECT_ENGINE_INSPECT_SIG_NO_MATCH
Definition: detect-engine-state.h:38
DetectEngineAppInspectionEngine_::progress
int16_t progress
Definition: detect.h:406
InspectionBuffer::inspect_len
uint32_t inspect_len
Definition: detect.h:348
InspectionBuffer::inspect
const uint8_t * inspect
Definition: detect.h:346
str
#define str(s)
Definition: suricata-common.h:272
InspectionBufferSetup
void InspectionBufferSetup(DetectEngineThreadCtx *det_ctx, const int list_id, InspectionBuffer *buffer, const uint8_t *data, const uint32_t data_len)
setup the buffer with our initial data
Definition: detect-engine.c:1441
SCFree
#define SCFree(p)
Definition: util-mem.h:61
Flow_::alstate
void * alstate
Definition: flow.h:486
Signature_::id
uint32_t id
Definition: detect.h:582
detect-parse.h
Signature_
Signature container.
Definition: detect.h:548
PrefilterAppendTxEngine
int PrefilterAppendTxEngine(DetectEngineCtx *de_ctx, SigGroupHead *sgh, void(*PrefilterTxFunc)(DetectEngineThreadCtx *det_ctx, const void *pectx, Packet *p, Flow *f, void *tx, const uint64_t idx, const uint8_t flags), AppProto alproto, int tx_min_progress, void *pectx, void(*FreeFunc)(void *pectx), const char *name)
Definition: detect-engine-prefilter.c:270
DetectEngineAppInspectionEngine_::transforms
const DetectEngineTransforms * transforms
Definition: detect.h:412
mpm_table
MpmTableElmt mpm_table[MPM_TABLE_SIZE]
Definition: util-mpm.c:48
SIGMATCH_NOOPT
#define SIGMATCH_NOOPT
Definition: detect.h:1453
DetectBufferSetActiveList
int DetectBufferSetActiveList(Signature *s, const int list)
Definition: detect-engine.c:1291
DetectBufferTypeSetDescriptionByName
void DetectBufferTypeSetDescriptionByName(const char *name, const char *desc)
Definition: detect-engine.c:1174
MpmCtx_
Definition: util-mpm.h:88
flow.h
Flow_::alproto
AppProto alproto
application level protocol
Definition: flow.h:460
SCCalloc
#define SCCalloc(nm, sz)
Definition: util-mem.h:53
flow-var.h
SigTableElmt_::RegisterTests
void(* RegisterTests)(void)
Definition: detect.h:1259
HtpBody_::body_inspected
uint64_t body_inspected
Definition: app-layer-htp.h:202
app-layer.h
DetectBufferMpmRegistery_::sm_list_base
int16_t sm_list_base
Definition: detect.h:639