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suricata/src/detect-http-client-body.c

2043 lines
61 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>
*
* Implements support for the http_client_body keyword
*/
#include "suricata-common.h"
#include "threads.h"
#include "decode.h"
#include "detect.h"
#include "detect-parse.h"
#include "detect-engine.h"
#include "detect-engine-mpm.h"
#include "detect-engine-state.h"
#include "detect-content.h"
#include "flow.h"
#include "flow-var.h"
#include "flow-util.h"
#include "util-debug.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "util-spm.h"
#include "app-layer.h"
#include <htp/htp.h>
#include "app-layer-htp.h"
#include "detect-http-client-body.h"
#include "stream-tcp.h"
int DetectHttpClientBodyMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
Flow *f, uint8_t flags, void *state, Signature *s,
SigMatch *m);
int DetectHttpClientBodySetup(DetectEngineCtx *, Signature *, char *);
void DetectHttpClientBodyRegisterTests(void);
void DetectHttpClientBodyFree(void *);
/**
* \brief Registers the keyword handlers for the "http_client_body" keyword.
*/
void DetectHttpClientBodyRegister(void)
{
sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].name = "http_client_body";
sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].Match = NULL;
sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].AppLayerMatch = DetectHttpClientBodyMatch;
sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].alproto = ALPROTO_HTTP;
sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].Setup = DetectHttpClientBodySetup;
sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].Free = DetectHttpClientBodyFree;
sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].RegisterTests = DetectHttpClientBodyRegisterTests;
sigmatch_table[DETECT_AL_HTTP_CLIENT_BODY].flags |= SIGMATCH_PAYLOAD ;
}
/**
* \brief App layer match function for the "http_client_body" keyword.
*
* \param t Pointer to the ThreadVars instance.
* \param det_ctx Pointer to the DetectEngineThreadCtx.
* \param f Pointer to the flow.
* \param flags Pointer to the flags indicating the flow direction.
* \param state Pointer to the app layer state data.
* \param s Pointer to the Signature instance.
* \param m Pointer to the SigMatch.
*
* \retval 1 On Match.
* \retval 0 On no match.
*/
int DetectHttpClientBodyMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
Flow *f, uint8_t flags, void *state, Signature *s,
SigMatch *m)
{
int result = 0;
DetectHttpClientBodyData *hcbd = (DetectHttpClientBodyData *)m->ctx;
HtpState *htp_state = (HtpState *)state;
SCMutexLock(&f->m);
if (htp_state == NULL) {
SCLogDebug("No htp state, no match at http body data");
goto end;
}
htp_tx_t *tx = NULL;
size_t idx = 0;
for (idx = 0;//hs->new_in_tx_index;
idx < list_size(htp_state->connp->conn->transactions); idx++)
{
tx = list_get(htp_state->connp->conn->transactions, idx);
if (tx == NULL)
continue;
SCHtpTxUserData *htud = (SCHtpTxUserData *) htp_tx_get_user_data(tx);
if (htud == NULL)
continue;
HtpBodyChunk *cur = htud->body.first;
if (htud->body.nchunks == 0) {
SCLogDebug("No http chunks to inspect");
goto end;
} else {
/* no chunks?!! get out of here */
if (cur == NULL) {
SCLogDebug("No http chunks to inspect");
goto end;
}
/* this applies only for the client request body like the keyword name says */
if (htud->body.operation != HTP_BODY_REQUEST) {
SCLogDebug("htp chunk not a request chunk");
goto end;
}
/* this is not how we do it now. We can rather hold the PM state from
* the previous chunk that was matched, and continue right from where
* we left off. We need to devise a scheme to do that, not just for
* this keyword, but other keywords need it as well */
uint8_t *chunks_buffer = NULL;
uint32_t total_chunks_len = 0;
/* club all the chunks into one whole buffer and call the SPM on the buffer */
while (cur != NULL) {
total_chunks_len += cur->len;
if ( (chunks_buffer = SCRealloc(chunks_buffer, total_chunks_len)) == NULL) {
return 0;
}
memcpy(chunks_buffer + total_chunks_len - cur->len, cur->data, cur->len);
cur = cur->next;
}
/* call the case insensitive version if nocase has been specified in the sig */
if (hcbd->flags & DETECT_AL_HTTP_CLIENT_BODY_NOCASE) {
result = (BoyerMooreNocase(hcbd->content, hcbd->content_len, chunks_buffer,
total_chunks_len, hcbd->bm_ctx->bmGs,
hcbd->bm_ctx->bmBc) != NULL);
/* call the case sensitive version if nocase has been specified in the sig */
} else {
result = (BoyerMoore(hcbd->content, hcbd->content_len, chunks_buffer,
total_chunks_len, hcbd->bm_ctx->bmGs,
hcbd->bm_ctx->bmBc) != NULL);
}
SCFree(chunks_buffer);
}
}
SCMutexUnlock(&f->m);
return result ^ ((hcbd->flags & DETECT_AL_HTTP_CLIENT_BODY_NEGATED) ? 1 : 0);
end:
SCMutexUnlock(&f->m);
return result;
}
/**
* \brief The setup function for the http_client_body keyword for a signature.
*
* \param de_ctx Pointer to the detection engine context.
* \param s Pointer to signature for the current Signature being parsed
* from the rules.
* \param m Pointer to the head of the SigMatchs for the current rule
* being parsed.
* \param arg Pointer to the string holding the keyword value.
*
* \retval 0 On success
* \retval -1 On failure
*/
int DetectHttpClientBodySetup(DetectEngineCtx *de_ctx, Signature *s, char *arg)
{
/* http_client_body_data (hcbd) */
DetectHttpClientBodyData *hcbd = NULL;
SigMatch *nm = NULL;
SigMatch *sm = NULL;
if (arg != NULL && strcmp(arg, "") != 0) {
SCLogError(SC_ERR_INVALID_ARGUMENT, "http_client_body supplied with no "
"args");
return -1;
}
if (s->sm_lists_tail[DETECT_SM_LIST_PMATCH] == NULL) {
SCLogError(SC_ERR_INVALID_SIGNATURE, "http_client_body found inside the "
"rule, without any preceding content keywords");
return -1;
}
sm = DetectContentGetLastPattern(s->sm_lists_tail[DETECT_SM_LIST_PMATCH]);
/* if still we are unable to find any content previous keywords, it is an
* invalid rule */
if (sm == NULL) {
SCLogError(SC_ERR_INVALID_SIGNATURE, "\"http_client_body\" keyword "
"found inside the rule without a content context. "
"Please use a \"content\" keyword before using the "
"\"http_client_body\" keyword");
return -1;
}
if (((DetectContentData *)sm->ctx)->flags & DETECT_CONTENT_FAST_PATTERN)
{
SCLogWarning(SC_WARN_COMPATIBILITY,
"http_client_body cannot be used with \"fast_pattern\" currently."
"Unsetting fast_pattern on this modifier. Signature ==> %s", s->sig_str);
((DetectContentData *)sm->ctx)->flags &= ~DETECT_CONTENT_FAST_PATTERN;
}
/* http_client_body should not be used with the rawbytes rule */
if ( ((DetectContentData *)sm->ctx)->flags & DETECT_CONTENT_RAWBYTES) {
SCLogError(SC_ERR_INVALID_SIGNATURE, "http_client_body rule can not "
"be used with the rawbytes rule keyword");
return -1;
}
if (s->alproto != ALPROTO_UNKNOWN && s->alproto != ALPROTO_HTTP) {
SCLogError(SC_ERR_CONFLICTING_RULE_KEYWORDS, "rule contains conflicting keywords");
goto error;
}
/* setup the HttpClientBodyData's data from content data structure's data */
hcbd = SCMalloc(sizeof(DetectHttpClientBodyData));
if (hcbd == NULL)
goto error;
memset(hcbd, 0, sizeof(DetectHttpClientBodyData));
/* transfer the pattern details from the content struct to the clientbody struct */
hcbd->content = ((DetectContentData *)sm->ctx)->content;
hcbd->content_len = ((DetectContentData *)sm->ctx)->content_len;
hcbd->flags |= (((DetectContentData *)sm->ctx)->flags & DETECT_CONTENT_NOCASE) ?
DETECT_AL_HTTP_CLIENT_BODY_NOCASE : 0;
hcbd->flags |= (((DetectContentData *)sm->ctx)->flags & DETECT_CONTENT_NEGATED) ?
DETECT_AL_HTTP_CLIENT_BODY_NEGATED : 0;
//hcbd->id = ((DetectContentData *)sm->ctx)->id;
hcbd->id = DetectPatternGetId(de_ctx->mpm_pattern_id_store, hcbd, DETECT_AL_HTTP_CLIENT_BODY);
hcbd->bm_ctx = ((DetectContentData *)sm->ctx)->bm_ctx;
nm = SigMatchAlloc();
if (nm == NULL) {
SCLogError(SC_ERR_MEM_ALLOC, "Error allocating memory");
goto error;
}
nm->type = DETECT_AL_HTTP_CLIENT_BODY;
nm->ctx = (void *)hcbd;
/* pull the previous content from the pmatch list, append
* the new match to the match list */
SigMatchReplaceContent(s, sm, nm);
/* free the old content sigmatch, the content pattern memory
* is taken over by the new sigmatch */
SCFree(sm->ctx);
SCFree(sm);
/* flag the signature to indicate that we scan the app layer data */
s->flags |= SIG_FLAG_APPLAYER;
s->alproto = ALPROTO_HTTP;
/* enable http request body callback in the http app layer parser */
AppLayerHtpEnableRequestBodyCallback();
return 0;
error:
if (hcbd != NULL)
DetectHttpClientBodyFree(hcbd);
if(nm != NULL)
SCFree(nm);
return -1;
}
/**
* \brief The function to free the http_client_body data.
*
* \param ptr Pointer to the http_client_body.
*/
void DetectHttpClientBodyFree(void *ptr)
{
SCEnter();
DetectHttpClientBodyData *hcbd = (DetectHttpClientBodyData *)ptr;
if (hcbd == NULL)
SCReturn;
if (hcbd->content != NULL)
SCFree(hcbd->content);
BoyerMooreCtxDeInit(hcbd->bm_ctx);
SCFree(hcbd);
SCReturn;
}
/************************************Unittests*********************************/
#ifdef UNITTESTS
#include "stream-tcp-reassemble.h"
/**
* \test Test that a signature containting a http_client_body is correctly parsed
* and the keyword is registered.
*/
static int DetectHttpClientBodyTest01(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
SigMatch *sm = NULL;
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
"(msg:\"Testing http_client_body\"; "
"content:one; http_client_body; sid:1;)");
if (de_ctx->sig_list != NULL) {
result = 1;
} else {
goto end;
}
sm = de_ctx->sig_list->sm_lists[DETECT_SM_LIST_MATCH];
if (sm != NULL) {
result &= (sm->type == DETECT_AL_HTTP_CLIENT_BODY);
result &= (sm->next == NULL);
}
end:
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
/**
* \test Test that a signature containing an valid http_client_body entry is
* parsed.
*/
static int DetectHttpClientBodyTest02(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
"(msg:\"Testing http_client_body\"; "
"content:one; http_client_body:; sid:1;)");
if (de_ctx->sig_list != NULL)
result = 1;
end:
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
/**
* \test Test that an invalid signature containing no content but a http_client_body
* is invalidated.
*/
static int DetectHttpClientBodyTest03(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
"(msg:\"Testing http_client_body\"; "
"http_client_body; sid:1;)");
if (de_ctx->sig_list == NULL)
result = 1;
end:
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
/**
* \test Test that an invalid signature containing a rawbytes along with a
* http_client_body is invalidated.
*/
static int DetectHttpClientBodyTest04(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
"(msg:\"Testing http_client_body\"; "
"content:one; rawbytes; http_client_body; sid:1;)");
if (de_ctx->sig_list == NULL)
result = 1;
end:
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
/**
* \test Test that an invalid signature containing a rawbytes along with a
* http_client_body is invalidated.
*/
static int DetectHttpClientBodyTest05(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
"(msg:\"Testing http_client_body\"; "
"content:one; http_client_body; nocase; sid:1;)");
if (de_ctx->sig_list != NULL)
result = 1;
end:
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
/**
*\test Test that the http_client_body content matches against a http request
* which holds the content.
*/
static int DetectHttpClientBodyTest06(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.openinfosecfoundation.org\r\n"
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 26\r\n"
"\r\n"
"This is dummy message body\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 client body test\"; "
"content:message; http_client_body; "
"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: \n");
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\n");
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_client_body content matches against a http request
* which holds the content.
*/
static int DetectHttpClientBodyTest07(void)
{
TcpSession ssn;
Packet *p1 = NULL;
Packet *p2 = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http1_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 67\r\n"
"\r\n"
"This is dummy message body1";
uint8_t http2_buf[] =
"This is dummy message body2\r\n";
uint32_t http1_len = sizeof(http1_buf) - 1;
uint32_t http2_len = sizeof(http2_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p1 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
p2 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p1->flow = &f;
p1->flowflags |= FLOW_PKT_TOSERVER;
p1->flowflags |= FLOW_PKT_ESTABLISHED;
p1->flags |= PKT_HAS_FLOW;
p2->flow = &f;
p2->flowflags |= FLOW_PKT_TOSERVER;
p2->flowflags |= FLOW_PKT_ESTABLISHED;
p2->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 client body test\"; "
"content:\"message\"; http_client_body; "
"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, http1_buf, http1_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: ");
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p1);
if (!(PacketAlertCheck(p1, 1))) {
printf("sid 1 didn't match on p1 but should have: ");
goto end;
}
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http2_buf, http2_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p2);
/* VJ right now we won't inspect the body another time if it
already matched once. Later we will take care of that.
if (!(PacketAlertCheck(p2, 1))) {
printf("sid 1 didn't match on p2 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(&p1, 1);
UTHFreePackets(&p2, 1);
return result;
}
/**
*\test Test that the http_client_body content matches against a http request
* which holds the content.
*/
static int DetectHttpClientBodyTest08(void)
{
TcpSession ssn;
Packet *p1 = NULL;
Packet *p2 = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http1_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 67\r\n"
"\r\n"
"This is dummy body1";
uint8_t http2_buf[] =
"This is dummy message body2\r\n";
uint32_t http1_len = sizeof(http1_buf) - 1;
uint32_t http2_len = sizeof(http2_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p1 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
p2 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p1->flow = &f;
p1->flowflags |= FLOW_PKT_TOSERVER;
p1->flowflags |= FLOW_PKT_ESTABLISHED;
p1->flags |= PKT_HAS_FLOW;
p2->flow = &f;
p2->flowflags |= FLOW_PKT_TOSERVER;
p2->flowflags |= FLOW_PKT_ESTABLISHED;
p2->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 client body test\"; "
"content:message; http_client_body; "
"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, http1_buf, http1_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, p1);
if ((PacketAlertCheck(p1, 1))) {
printf("sid 1 didn't match but should have");
goto end;
}
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http2_buf, http2_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p2);
if (!(PacketAlertCheck(p2, 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(&p1, 1);
UTHFreePackets(&p2, 1);
return result;
}
/**
*\test Test that the http_client_body content matches against a http request
* which holds the content, against a cross boundary present pattern.
*/
static int DetectHttpClientBodyTest09(void)
{
TcpSession ssn;
Packet *p1 = NULL;
Packet *p2 = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http1_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 67\r\n"
"\r\n"
"This is dummy body1";
uint8_t http2_buf[] =
"This is dummy message body2\r\n";
uint32_t http1_len = sizeof(http1_buf) - 1;
uint32_t http2_len = sizeof(http2_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p1 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
p2 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p1->flow = &f;
p1->flowflags |= FLOW_PKT_TOSERVER;
p1->flowflags |= FLOW_PKT_ESTABLISHED;
p1->flags |= PKT_HAS_FLOW;
p2->flow = &f;
p2->flowflags |= FLOW_PKT_TOSERVER;
p2->flowflags |= FLOW_PKT_ESTABLISHED;
p2->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 client body test\"; "
"content:body1This; http_client_body; "
"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, http1_buf, http1_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, p1);
if ((PacketAlertCheck(p1, 1))) {
printf("sid 1 didn't match but should have");
goto end;
}
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http2_buf, http2_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p2);
if (!(PacketAlertCheck(p2, 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(&p1, 1);
UTHFreePackets(&p2, 1);
return result;
}
/**
*\test Test that the http_client_body content matches against a http request
* against a case insensitive pattern.
*/
static int DetectHttpClientBodyTest10(void)
{
TcpSession ssn;
Packet *p1 = NULL;
Packet *p2 = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
Flow f;
uint8_t http1_buf[] =
"GET /index.html HTTP/1.0\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 67\r\n"
"\r\n"
"This is dummy bodY1";
uint8_t http2_buf[] =
"This is dummy message body2\r\n";
uint32_t http1_len = sizeof(http1_buf) - 1;
uint32_t http2_len = sizeof(http2_buf) - 1;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p1 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
p2 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.src.family = AF_INET;
f.dst.family = AF_INET;
p1->flow = &f;
p1->flowflags |= FLOW_PKT_TOSERVER;
p1->flowflags |= FLOW_PKT_ESTABLISHED;
p1->flags |= PKT_HAS_FLOW;
p2->flow = &f;
p2->flowflags |= FLOW_PKT_TOSERVER;
p2->flowflags |= FLOW_PKT_ESTABLISHED;
p2->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 client body test\"; "
"content:body1This; http_client_body; nocase;"
"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, http1_buf, http1_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: \n");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p1);
if ((PacketAlertCheck(p1, 1))) {
printf("sid 1 didn't match but should have\n");
goto end;
}
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, http2_buf, http2_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: \n", r);
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p2);
if (!(PacketAlertCheck(p2, 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(&p1, 1);
UTHFreePackets(&p2, 1);
return result;
}
/**
*\test Test that the negated http_client_body content matches against a
* http request which doesn't hold the content.
*/
static int DetectHttpClientBodyTest11(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.openinfosecfoundation.org\r\n"
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 26\r\n"
"\r\n"
"This is dummy message body\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 client body test\"; "
"content:!message1; http_client_body; "
"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 Negative test that the negated http_client_body content matches against a
* http request which holds hold the content.
*/
static int DetectHttpClientBodyTest12(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.openinfosecfoundation.org\r\n"
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 26\r\n"
"\r\n"
"This is dummy message body\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 client body test\"; "
"content:!message; http_client_body; "
"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_client_body content matches against a http request
* which holds the content.
*/
static int DetectHttpClientBodyTest13(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.openinfosecfoundation.org\r\n"
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 100\r\n"
"\r\n"
"longbufferabcdefghijklmnopqrstuvwxyz0123456789bufferend\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 client body test\"; "
"content:abcdefghijklmnopqrstuvwxyz0123456789; http_client_body; "
"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 multiple http transactions and body chunks of request handling */
static int DetectHttpClientBodyTest14(void) {
int result = 0;
Signature *s = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
ThreadVars th_v;
Flow f;
TcpSession ssn;
Packet *p = NULL;
uint8_t httpbuf1[] = "POST / HTTP/1.1\r\n";
uint8_t httpbuf2[] = "User-Agent: Mozilla/1.0\r\nContent-Length: 10\r\n";
uint8_t httpbuf3[] = "Cookie: dummy\r\n\r\n";
uint8_t httpbuf4[] = "Body one!!";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
uint8_t httpbuf5[] = "GET /?var=val HTTP/1.1\r\n";
uint8_t httpbuf6[] = "User-Agent: Firefox/1.0\r\n";
uint8_t httpbuf7[] = "Cookie: dummy2\r\nContent-Length: 10\r\n\r\nBody two!!";
uint32_t httplen5 = sizeof(httpbuf5) - 1; /* minus the \0 */
uint32_t httplen6 = sizeof(httpbuf6) - 1; /* minus the \0 */
uint32_t httplen7 = sizeof(httpbuf7) - 1; /* minus the \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.proto = IPPROTO_TCP;
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);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (content:\"POST\"; http_method; content:\"Mozilla\"; http_header; content:\"dummy\"; http_cookie; content:\"one\"; http_client_body; sid:1; rev:1;)");
if (s == NULL) {
printf("sig parse failed: ");
goto end;
}
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (content:\"GET\"; http_method; content:\"Firefox\"; http_header; content:\"dummy2\"; http_cookie; content:\"two\"; http_client_body; sid:2; rev:1;)");
if (s == NULL) {
printf("sig2 parse failed: ");
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sig 1 alerted: ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf2, httplen2);
if (r != 0) {
printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sig 1 alerted (2): ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf3, httplen3);
if (r != 0) {
printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("signature matched, but shouldn't have: ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf4, httplen4);
if (r != 0) {
printf("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sig 1 didn't alert: ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf5, httplen5);
if (r != 0) {
printf("toserver chunk 5 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sig 1 alerted (5): ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf6, httplen6);
if (r != 0) {
printf("toserver chunk 6 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if ((PacketAlertCheck(p, 1)) || (PacketAlertCheck(p, 2))) {
printf("sig 1 alerted (request 2, chunk 6): ");
goto end;
}
p->alerts.cnt = 0;
SCLogDebug("sending data chunk 7");
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf7, httplen7);
if (r != 0) {
printf("toserver chunk 7 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 2))) {
printf("signature 2 didn't match, but should have: ");
goto end;
}
p->alerts.cnt = 0;
HtpState *htp_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (htp_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
if (list_size(htp_state->connp->conn->transactions) != 2) {
printf("The http app layer doesn't have 2 transactions, but it should: ");
goto end;
}
result = 1;
end:
if (det_ctx != NULL) {
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
}
if (de_ctx != NULL) {
SigGroupCleanup(de_ctx);
DetectEngineCtxFree(de_ctx);
}
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePacket(p);
return result;
}
/** \test multiple http transactions and body chunks of request handling */
static int DetectHttpClientBodyTest15(void) {
int result = 0;
Signature *s = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
ThreadVars th_v;
Flow f;
TcpSession ssn;
Packet *p = NULL;
uint8_t httpbuf1[] = "POST / HTTP/1.1\r\n";
uint8_t httpbuf2[] = "User-Agent: Mozilla/1.0\r\nContent-Length: 10\r\n";
uint8_t httpbuf3[] = "Cookie: dummy\r\n\r\n";
uint8_t httpbuf4[] = "Body one!!";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
uint8_t httpbuf5[] = "GET /?var=val HTTP/1.1\r\n";
uint8_t httpbuf6[] = "User-Agent: Firefox/1.0\r\n";
uint8_t httpbuf7[] = "Cookie: dummy2\r\nContent-Length: 10\r\n\r\nBody two!!";
uint32_t httplen5 = sizeof(httpbuf5) - 1; /* minus the \0 */
uint32_t httplen6 = sizeof(httpbuf6) - 1; /* minus the \0 */
uint32_t httplen7 = sizeof(httpbuf7) - 1; /* minus the \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.proto = IPPROTO_TCP;
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);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (content:\"POST\"; http_method; content:\"Mozilla\"; http_header; content:\"dummy\"; http_cookie; content:\"one\"; http_client_body; sid:1; rev:1;)");
if (s == NULL) {
printf("sig parse failed: ");
goto end;
}
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (content:\"GET\"; http_method; content:\"Firefox\"; http_header; content:\"dummy2\"; http_cookie; content:\"two\"; http_client_body; sid:2; rev:1;)");
if (s == NULL) {
printf("sig2 parse failed: ");
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sig 1 alerted: ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf2, httplen2);
if (r != 0) {
printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sig 1 alerted (2): ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf3, httplen3);
if (r != 0) {
printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("signature matched, but shouldn't have: ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf4, httplen4);
if (r != 0) {
printf("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sig 1 didn't alert: ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf5, httplen5);
if (r != 0) {
printf("toserver chunk 5 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sig 1 alerted (5): ");
goto end;
}
p->alerts.cnt = 0;
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf6, httplen6);
if (r != 0) {
printf("toserver chunk 6 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if ((PacketAlertCheck(p, 1)) || (PacketAlertCheck(p, 2))) {
printf("sig 1 alerted (request 2, chunk 6): ");
goto end;
}
p->alerts.cnt = 0;
SCLogDebug("sending data chunk 7");
r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf7, httplen7);
if (r != 0) {
printf("toserver chunk 7 returned %" PRId32 ", expected 0: ", r);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 2))) {
printf("signature 2 didn't match, but should have: ");
goto end;
}
p->alerts.cnt = 0;
HtpState *htp_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
if (htp_state == NULL) {
printf("no http state: ");
result = 0;
goto end;
}
/* hardcoded check of the transactions and it's client body chunks */
if (list_size(htp_state->connp->conn->transactions) != 2) {
printf("The http app layer doesn't have 2 transactions, but it should: ");
goto end;
}
htp_tx_t *t1 = list_get(htp_state->connp->conn->transactions, 0);
htp_tx_t *t2 = list_get(htp_state->connp->conn->transactions, 1);
SCHtpTxUserData *htud = (SCHtpTxUserData *) htp_tx_get_user_data(t1);
HtpBodyChunk *cur = htud->body.first;
if (htud->body.nchunks == 0) {
SCLogDebug("No body data in t1 (it should be removed only when the tx is destroyed): ");
goto end;
}
if (memcmp(cur->data, "Body one!!", strlen("Body one!!")) != 0) {
SCLogDebug("Body data in t1 is not correctly set: ");
goto end;
}
htud = (SCHtpTxUserData *) htp_tx_get_user_data(t2);
cur = htud->body.first;
if (htud->body.nchunks == 0) {
SCLogDebug("No body data in t1 (it should be removed only when the tx is destroyed): ");
goto end;
}
if (memcmp(cur->data, "Body two!!", strlen("Body two!!")) != 0) {
SCLogDebug("Body data in t1 is not correctly set: ");
goto end;
}
result = 1;
end:
if (det_ctx != NULL) {
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
}
if (de_ctx != NULL) {
SigGroupCleanup(de_ctx);
DetectEngineCtxFree(de_ctx);
}
FlowL7DataPtrFree(&f);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePacket(p);
return result;
}
int DetectHttpClientBodyTest16(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
if ( (de_ctx = DetectEngineCtxInit()) == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
"(content:one; content:one; http_client_body; sid:1;)");
if (de_ctx->sig_list == NULL) {
printf("de_ctx->sig_list == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL\n");
goto end;
}
DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
DetectHttpClientBodyData *hcbd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_AMATCH]->ctx;
if (cd->id == hcbd->id)
goto end;
result = 1;
end:
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
int DetectHttpClientBodyTest17(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
if ( (de_ctx = DetectEngineCtxInit()) == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
"(content:one; http_client_body; content:one; sid:1;)");
if (de_ctx->sig_list == NULL) {
printf("de_ctx->sig_list == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL\n");
goto end;
}
DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
DetectHttpClientBodyData *hcbd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_AMATCH]->ctx;
if (cd->id == hcbd->id)
goto end;
result = 1;
end:
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
int DetectHttpClientBodyTest18(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
if ( (de_ctx = DetectEngineCtxInit()) == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
"(content:one; content:one; content:one; http_client_body; content:one; sid:1;)");
if (de_ctx->sig_list == NULL) {
printf("de_ctx->sig_list == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL\n");
goto end;
}
DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
DetectHttpClientBodyData *hcbd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_AMATCH]->ctx;
if (cd->id != 0 || hcbd->id != 1)
goto end;
result = 1;
end:
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
int DetectHttpClientBodyTest19(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
if ( (de_ctx = DetectEngineCtxInit()) == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
"(content:one; http_client_body; content:one; content:one; content:one; sid:1;)");
if (de_ctx->sig_list == NULL) {
printf("de_ctx->sig_list == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL\n");
goto end;
}
DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
DetectHttpClientBodyData *hcbd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_AMATCH]->ctx;
if (cd->id != 1 || hcbd->id != 0)
goto end;
result = 1;
end:
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
int DetectHttpClientBodyTest20(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
if ( (de_ctx = DetectEngineCtxInit()) == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
"(content:one; http_client_body; "
"content:one; content:one; http_client_body; content:one; sid:1;)");
if (de_ctx->sig_list == NULL) {
printf("de_ctx->sig_list == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL\n");
goto end;
}
DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
DetectHttpClientBodyData *hcbd1 = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_AMATCH]->ctx;
DetectHttpClientBodyData *hcbd2 = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_AMATCH]->prev->ctx;
if (cd->id != 1 || hcbd1->id != 0 || hcbd2->id != 0)
goto end;
result = 1;
end:
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
int DetectHttpClientBodyTest21(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
if ( (de_ctx = DetectEngineCtxInit()) == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
"(content:one; http_client_body; "
"content:one; content:one; http_client_body; content:two; sid:1;)");
if (de_ctx->sig_list == NULL) {
printf("de_ctx->sig_list == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
goto end;
}
if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL) {
printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_AMATCH] == NULL\n");
goto end;
}
DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
DetectHttpClientBodyData *hcbd1 = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_AMATCH]->ctx;
DetectHttpClientBodyData *hcbd2 = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_AMATCH]->prev->ctx;
if (cd->id != 2 || hcbd1->id != 0 || hcbd2->id != 0)
goto end;
result = 1;
end:
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
return result;
}
#endif /* UNITTESTS */
void DetectHttpClientBodyRegisterTests(void)
{
#ifdef UNITTESTS
UtRegisterTest("DetectHttpClientBodyTest01", DetectHttpClientBodyTest01, 1);
UtRegisterTest("DetectHttpClientBodyTest02", DetectHttpClientBodyTest02, 1);
UtRegisterTest("DetectHttpClientBodyTest03", DetectHttpClientBodyTest03, 1);
UtRegisterTest("DetectHttpClientBodyTest04", DetectHttpClientBodyTest04, 1);
UtRegisterTest("DetectHttpClientBodyTest05", DetectHttpClientBodyTest05, 1);
UtRegisterTest("DetectHttpClientBodyTest06", DetectHttpClientBodyTest06, 1);
UtRegisterTest("DetectHttpClientBodyTest07", DetectHttpClientBodyTest07, 1);
UtRegisterTest("DetectHttpClientBodyTest08", DetectHttpClientBodyTest08, 1);
UtRegisterTest("DetectHttpClientBodyTest09", DetectHttpClientBodyTest09, 1);
UtRegisterTest("DetectHttpClientBodyTest10", DetectHttpClientBodyTest10, 1);
UtRegisterTest("DetectHttpClientBodyTest11", DetectHttpClientBodyTest11, 1);
UtRegisterTest("DetectHttpClientBodyTest12", DetectHttpClientBodyTest12, 1);
UtRegisterTest("DetectHttpClientBodyTest13", DetectHttpClientBodyTest13, 1);
UtRegisterTest("DetectHttpClientBodyTest14", DetectHttpClientBodyTest14, 1);
UtRegisterTest("DetectHttpClientBodyTest15", DetectHttpClientBodyTest15, 1);
UtRegisterTest("DetectHttpClientBodyTest16", DetectHttpClientBodyTest16, 1);
UtRegisterTest("DetectHttpClientBodyTest17", DetectHttpClientBodyTest17, 1);
UtRegisterTest("DetectHttpClientBodyTest18", DetectHttpClientBodyTest18, 1);
UtRegisterTest("DetectHttpClientBodyTest19", DetectHttpClientBodyTest19, 1);
UtRegisterTest("DetectHttpClientBodyTest20", DetectHttpClientBodyTest20, 1);
UtRegisterTest("DetectHttpClientBodyTest21", DetectHttpClientBodyTest21, 1);
#endif /* UNITTESTS */
return;
}