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suricata/src/detect-engine-hrhd.c

2213 lines
62 KiB
C

/* Copyright (C) 2007-2010 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/** \file
*
* \author Anoop Saldanha <poonaatsoc@gmail.com>
*/
#include "suricata-common.h"
#include "suricata.h"
#include "decode.h"
#include "detect.h"
#include "detect-engine.h"
#include "detect-engine-hrhd.h"
#include "detect-engine-mpm.h"
#include "detect-parse.h"
#include "detect-engine-state.h"
#include "detect-pcre.h"
#include "detect-isdataat.h"
#include "detect-bytetest.h"
#include "detect-bytejump.h"
#include "flow-util.h"
#include "util-spm.h"
#include "util-debug.h"
#include "util-print.h"
#include "flow.h"
#include "detect-flow.h"
#include "flow-var.h"
#include "threads.h"
#include "flow-alert-sid.h"
#include "stream-tcp.h"
#include "stream.h"
#include "app-layer-parser.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "app-layer.h"
#include "app-layer-htp.h"
#include "app-layer-protos.h"
/**
* \brief Run the actual payload match function for http raw header.
*
* For accounting the last match in relative matching the
* det_ctx->payload_offset var is used.
*
* \param de_ctx Detection engine context.
* \param det_ctx Detection engine thread context.
* \param s Signature to inspect.
* \param sm SigMatch to inspect.
* \param payload Ptr to the http raw headers buffer to inspect.
* \param payload_len Length of the http raw headers buffer.
*
* \retval 0 no match.
* \retval 1 match.
*/
static int DoInspectHttpRawHeader(DetectEngineCtx *de_ctx,
DetectEngineThreadCtx *det_ctx,
Signature *s, SigMatch *sm,
uint8_t *payload, uint32_t payload_len)
{
SCEnter();
det_ctx->inspection_recursion_counter++;
if (det_ctx->inspection_recursion_counter == de_ctx->inspection_recursion_limit) {
det_ctx->discontinue_matching = 1;
SCReturnInt(0);
}
if (sm == NULL) {
SCReturnInt(0);
}
if (sm->type == DETECT_AL_HTTP_RAW_HEADER) {
if (payload_len == 0) {
SCReturnInt(0);
}
DetectContentData *cd = (DetectContentData *)sm->ctx;
SCLogDebug("inspecting http headers %"PRIu32" payload_len %"PRIu32,
cd->id, payload_len);
if (cd->flags & DETECT_CONTENT_HRHD_MPM && !(cd->flags & DETECT_CONTENT_NEGATED))
goto match;
/* rule parsers should take care of this */
BUG_ON(cd->depth != 0 && cd->depth <= cd->offset);
/* search for our pattern, checking the matches recursively.
* if we match we look for the next SigMatch as well */
uint8_t *found = NULL;
uint32_t offset = 0;
uint32_t depth = payload_len;
uint32_t prev_offset = 0; /**< used in recursive searching */
uint32_t prev_payload_offset = det_ctx->payload_offset;
do {
if (cd->flags & DETECT_CONTENT_DISTANCE ||
cd->flags & DETECT_CONTENT_WITHIN) {
SCLogDebug("prev_payload_offset %"PRIu32, prev_payload_offset);
offset = prev_payload_offset;
depth = payload_len;
if (cd->flags & DETECT_CONTENT_DISTANCE) {
if (cd->distance < 0 && (uint32_t)(abs(cd->distance)) > offset)
offset = 0;
else
offset += cd->distance;
}
if (cd->flags & DETECT_CONTENT_WITHIN) {
if ((int32_t)depth > (int32_t)(prev_payload_offset + cd->within)) {
depth = prev_payload_offset + cd->within;
}
}
if (cd->depth != 0) {
if ((cd->depth + prev_payload_offset) < depth) {
depth = prev_payload_offset + cd->depth;
}
}
if (cd->offset > offset) {
offset = cd->offset;
}
} else { /* implied no relative matches */
/* set depth */
if (cd->depth != 0) {
depth = cd->depth;
}
/* set offset */
offset = cd->offset;
prev_payload_offset = 0;
}
/* update offset with prev_offset if we're searching for
* matches after the first occurence. */
if (prev_offset != 0)
offset = prev_offset;
if (depth > payload_len)
depth = payload_len;
/* if offset is bigger than depth we can never match on a pattern.
* We can however, "match" on a negated pattern. */
if (offset > depth || depth == 0) {
if (cd->flags & DETECT_CONTENT_NEGATED) {
goto match;
} else {
SCReturnInt(0);
}
}
uint8_t *spayload = payload + offset;
uint32_t spayload_len = depth - offset;
uint32_t match_offset = 0;
BUG_ON(spayload_len > payload_len);
/* do the actual search with boyer moore precooked ctx */
if (cd->flags & DETECT_CONTENT_NOCASE) {
found = BoyerMooreNocase(cd->content, cd->content_len,
spayload, spayload_len,
cd->bm_ctx->bmGs, cd->bm_ctx->bmBc);
} else {
found = BoyerMoore(cd->content, cd->content_len,
spayload, spayload_len,
cd->bm_ctx->bmGs, cd->bm_ctx->bmBc);
}
/* next we evaluate the result in combination with the
* negation flag. */
if (found == NULL && !(cd->flags & DETECT_CONTENT_NEGATED)) {
SCReturnInt(0);
} else if (found == NULL && cd->flags & DETECT_CONTENT_NEGATED) {
goto match;
} else if (found != NULL && cd->flags & DETECT_CONTENT_NEGATED) {
det_ctx->discontinue_matching = 1;
SCReturnInt(0);
} else {
match_offset = (uint32_t)((found - payload) + cd->content_len);
det_ctx->payload_offset = match_offset;
if (!(cd->flags & DETECT_CONTENT_RELATIVE_NEXT)) {
SCLogDebug("no relative match coming up, so this is a match");
goto match;
}
/* bail out if we have no next match. Technically this is an
* error, as the current cd has the DETECT_CONTENT_RELATIVE_NEXT
* flag set. */
if (sm->next == NULL) {
SCReturnInt(0);
}
/* see if the next payload keywords match. If not, we will
* search for another occurence of this http raw header content
* and see if the others match then until we run out of matches */
int r = DoInspectHttpRawHeader(de_ctx, det_ctx, s, sm->next,
payload, payload_len);
if (r == 1) {
SCReturnInt(1);
}
if (det_ctx->discontinue_matching)
SCReturnInt(0);
/* set the previous match offset to the start of this match + 1 */
prev_offset = (match_offset - (cd->content_len - 1));
SCLogDebug("trying to see if there is another match after "
"prev_offset %"PRIu32, prev_offset);
}
} while(1);
} else {
/* we should never get here, but bail out just in case */
BUG_ON(1);
}
SCReturnInt(0);
match:
/* this sigmatch matched, inspect the next one. If it was the last,
* the payload portion of the signature matched. */
if (sm->next != NULL) {
int r = DoInspectHttpRawHeader(de_ctx, det_ctx, s, sm->next, payload,
payload_len);
SCReturnInt(r);
} else {
SCReturnInt(1);
}
}
/**
* \brief Helps buffer http raw headers from different transactions and
* stores them away in detection context. Also calls the mpm on the
* buffers.
*
* \param det_ctx Detection engine thread ctx.
* \param f Pointer to the flow.
* \param htp_state http state.
*
* \retval cnt The match count from the mpm call.
*
* \warning Make sure the flow is locked.
*/
static uint32_t DetectEngineInspectHttpRawHeaderMpmInspect(DetectEngineThreadCtx *det_ctx,
Signature *s, Flow *f,
HtpState *htp_state)
{
uint32_t cnt = 0;
size_t idx = 0;
htp_tx_t *tx = NULL;
int i = 0;
for (idx = AppLayerTransactionGetInspectId(f);
i < det_ctx->hrhd_buffers_list_len; idx++, i++) {
/* if the buffer already exists, use it */
if (det_ctx->hrhd_buffers[i] != NULL) {
if (s->mpm_flags & SIG_FLAG_MPM_HRHDCONTENT) {
cnt += HttpRawHeaderPatternSearch(det_ctx,
det_ctx->hrhd_buffers[i],
det_ctx->hrhd_buffers_len[i]);
}
continue;
}
tx = list_get(htp_state->connp->conn->transactions, idx);
if (tx == NULL)
continue;
bstr *raw_headers = htp_tx_get_request_headers_raw(tx);
if (raw_headers == NULL)
continue;
/* store the buffers. We will need it for further inspection */
det_ctx->hrhd_buffers[i] = (uint8_t *)bstr_ptr(raw_headers);
det_ctx->hrhd_buffers_len[i] = bstr_len(raw_headers);
/* carry out the mpm */
if (s->mpm_flags & SIG_FLAG_MPM_HRHDCONTENT)
cnt += HttpRawHeaderPatternSearch(det_ctx, det_ctx->hrhd_buffers[i],
det_ctx->hrhd_buffers_len[i]);
} /* for (idx = AppLayerTransactionGetInspectId(f); .. */
SCReturnUInt(cnt);
}
/**
* \brief Do the http_raw_header content inspection for a signature.
*
* \param de_ctx Detection engine context.
* \param det_ctx Detection engine thread context.
* \param s Signature to inspect.
* \param f Flow.
* \param flags App layer flags.
* \param state App layer state.
*
* \retval 0 No match.
* \retval 1 Match.
*/
int DetectEngineInspectHttpRawHeader(DetectEngineCtx *de_ctx,
DetectEngineThreadCtx *det_ctx,
Signature *s, Flow *f, uint8_t flags,
void *alstate)
{
SCEnter();
int r = 0;
HtpState *htp_state = NULL;
int i = 0;
htp_state = (HtpState *)alstate;
if (htp_state == NULL) {
SCLogDebug("no HTTP state");
SCReturnInt(0);
}
/* locking the flow, we will inspect the htp state */
SCMutexLock(&f->m);
if (htp_state->connp == NULL || htp_state->connp->conn == NULL) {
SCLogDebug("HTP state has no conn(p)");
goto end;
}
/* it is either the first entry into this function. If it is not,
* then we just don't have any http transactions */
if (det_ctx->hrhd_buffers_list_len == 0) {
/* get the transaction id */
int tmp_idx = AppLayerTransactionGetInspectId(f);
/* error! get out of here */
if (tmp_idx == -1)
goto end;
/* let's get the transaction count. We need this to hold the header
* buffer for each transaction */
det_ctx->hrhd_buffers_list_len = list_size(htp_state->connp->conn->transactions) - tmp_idx;
/* no transactions?! cool. get out of here */
if (det_ctx->hrhd_buffers_list_len == 0)
goto end;
/* assign space to hold buffers. Each per transaction */
det_ctx->hrhd_buffers = SCMalloc(det_ctx->hrhd_buffers_list_len * sizeof(uint8_t *));
if (det_ctx->hrhd_buffers == NULL) {
r = 0;
goto end;
}
memset(det_ctx->hrhd_buffers, 0, det_ctx->hrhd_buffers_list_len * sizeof(uint8_t *));
det_ctx->hrhd_buffers_len = SCMalloc(det_ctx->hrhd_buffers_list_len * sizeof(uint32_t));
if (det_ctx->hrhd_buffers_len == NULL) {
r = 0;
goto end;
}
memset(det_ctx->hrhd_buffers_len, 0, det_ctx->hrhd_buffers_list_len * sizeof(uint32_t));
} /* if (det_ctx->hrhd_buffers_list_len == 0) */
if (s->mpm_flags & SIG_FLAG_MPM_HRHDCONTENT) {
if (det_ctx->de_mpm_scanned_hrhd == FALSE) {
uint32_t cnt = DetectEngineInspectHttpRawHeaderMpmInspect(det_ctx, s,
f, htp_state);
if (cnt <= 0)
det_ctx->de_have_hrhd = FALSE;
det_ctx->de_mpm_scanned_hrhd = TRUE;
}
} else {
DetectEngineInspectHttpRawHeaderMpmInspect(det_ctx, s, f, htp_state);
}
if (det_ctx->de_have_hrhd == FALSE &&
s->mpm_flags & SIG_FLAG_MPM_HRHDCONTENT &&
!(s->mpm_flags & SIG_FLAG_MPM_HRHDCONTENT_NEG)) {
SCLogDebug("mpm results failure for http raw headers. Get out of here");
goto end;
}
if ((s->mpm_flags & SIG_FLAG_MPM_HRHDCONTENT) && (det_ctx->de_mpm_scanned_hrhd == TRUE)) {
/* filter out the sig that needs a match, but have no matches */
if (!(s->mpm_flags & SIG_FLAG_MPM_HRHDCONTENT_NEG) &&
!(det_ctx->pmq.pattern_id_bitarray[(s->mpm_hrhdpattern_id / 8)] & (1 << (s->mpm_hrhdpattern_id % 8)))) {
goto end;
}
}
for (i = 0; i < det_ctx->hrhd_buffers_list_len; i++) {
uint8_t *hrhd_buffer = det_ctx->hrhd_buffers[i];
uint32_t hrhd_buffer_len = det_ctx->hrhd_buffers_len[i];
if (hrhd_buffer == NULL)
continue;
r = DoInspectHttpRawHeader(de_ctx, det_ctx, s, s->sm_lists[DETECT_SM_LIST_HRHDMATCH],
hrhd_buffer, hrhd_buffer_len);
if (r == 1) {
break;
}
}
end:
SCMutexUnlock(&f->m);
SCReturnInt(r);
}
/**
* \brief Clean the hrhd buffers.
*
* \param det_ctx Pointer to the detection engine thread ctx.
*/
void DetectEngineCleanHRHDBuffers(DetectEngineThreadCtx *det_ctx)
{
if (det_ctx->hrhd_buffers_list_len != 0) {
if (det_ctx->hrhd_buffers != NULL) {
SCFree(det_ctx->hrhd_buffers);
det_ctx->hrhd_buffers = NULL;
}
det_ctx->hrhd_buffers_list_len = 0;
}
return;
}
/***********************************Unittests**********************************/
#ifdef UNITTESTS
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest01(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:\"one\"; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest02(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:\"one\"; depth:15; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest03(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:!one; depth:5; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest04(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; depth:5; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest05(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:!one; depth:15; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest06(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:\"one\"; offset:10; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest07(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:!one; offset:15; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest08(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; offset:15; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest09(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:!one; offset:10; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest10(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:three; http_raw_header; within:10; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest11(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:!three; http_raw_header; within:5; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest12(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:!three; http_raw_header; within:10; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest13(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:three; http_raw_header; within:5; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest14(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:five; http_raw_header; distance:7; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest15(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:!five; http_raw_header; distance:15; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest16(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:!five; http_raw_header; distance:7; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest17(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.onetwothreefourfivesixseven.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:five; http_raw_header; distance:15; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (http_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest18(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
Flow f;
uint8_t http_buf[] =
"Host: www.onetwothreefourfivesixsevenfive.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; content:five; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
/* start the search phase */
det_ctx->sgh = SigMatchSignaturesGetSgh(de_ctx, det_ctx, p);
uint32_t r = HttpRawHeaderPatternSearch(det_ctx, http_buf, http_len);
if (r != 2) {
printf("expected result 2, got %"PRIu32": ", r);
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
*\test Test that the http_header content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpRawHeaderTest19(void)
{
TcpSession ssn;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
Flow f;
uint8_t http_buf[] =
"Host: www.onetwothreefourfivesixsevenfive.org\r\n\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
FlowL7DataPtrInit(&f);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(msg:\"http header test\"; "
"content:one; http_raw_header; fast_pattern; content:five; http_raw_header; "
"sid:1;)");
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
/* start the search phase */
det_ctx->sgh = SigMatchSignaturesGetSgh(de_ctx, det_ctx, p);
uint32_t r = HttpRawHeaderPatternSearch(det_ctx, http_buf, http_len);
if (r != 1) {
printf("expected result 1, got %"PRIu32": ", r);
goto end;
}
result = 1;
end:
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
#endif /* UNITTESTS */
void DetectEngineHttpRawHeaderRegisterTests(void)
{
#ifdef UNITTESTS
UtRegisterTest("DetectEngineHttpRawHeaderTest01",
DetectEngineHttpRawHeaderTest01, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest02",
DetectEngineHttpRawHeaderTest02, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest03",
DetectEngineHttpRawHeaderTest03, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest04",
DetectEngineHttpRawHeaderTest04, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest05",
DetectEngineHttpRawHeaderTest05, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest06",
DetectEngineHttpRawHeaderTest06, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest07",
DetectEngineHttpRawHeaderTest07, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest08",
DetectEngineHttpRawHeaderTest08, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest09",
DetectEngineHttpRawHeaderTest09, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest10",
DetectEngineHttpRawHeaderTest10, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest11",
DetectEngineHttpRawHeaderTest11, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest12",
DetectEngineHttpRawHeaderTest12, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest13",
DetectEngineHttpRawHeaderTest13, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest14",
DetectEngineHttpRawHeaderTest14, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest15",
DetectEngineHttpRawHeaderTest15, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest16",
DetectEngineHttpRawHeaderTest16, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest17",
DetectEngineHttpRawHeaderTest17, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest18",
DetectEngineHttpRawHeaderTest18, 1);
UtRegisterTest("DetectEngineHttpRawHeaderTest19",
DetectEngineHttpRawHeaderTest19, 1);
#endif /* UNITTESTS */
return;
}