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suricata/src/detect-engine-hcbd.c

1148 lines
39 KiB
C

/* Copyright (C) 2007-2012 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.
*/
/**
* \ingroup httplayer
*
* @{
*/
/** \file
*
* \author Anoop Saldanha <anoopsaldanha@gmail.com>
*
* \brief Handle HTTP request body match corresponding to http_client_body
* keyword.
*
*/
#include "suricata-common.h"
#include "suricata.h"
#include "decode.h"
#include "detect.h"
#include "detect-engine.h"
#include "detect-engine-mpm.h"
#include "detect-parse.h"
#include "detect-engine-state.h"
#include "detect-engine-content-inspection.h"
#include "flow-util.h"
#include "util-debug.h"
#include "util-print.h"
#include "flow.h"
#include "app-layer-parser.h"
#include "stream-tcp.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "app-layer.h"
#include "app-layer-htp.h"
#include "app-layer-protos.h"
#include "conf.h"
#include "conf-yaml-loader.h"
#include "util-validate.h"
#define BUFFER_STEP 50
static inline int HCBDCreateSpace(DetectEngineThreadCtx *det_ctx, uint64_t size)
{
if (size >= (USHRT_MAX - BUFFER_STEP))
return -1;
void *ptmp;
if (size > det_ctx->hcbd_buffers_size) {
ptmp = SCRealloc(det_ctx->hcbd,
(det_ctx->hcbd_buffers_size + BUFFER_STEP) * sizeof(HttpReassembledBody));
if (ptmp == NULL) {
SCFree(det_ctx->hcbd);
det_ctx->hcbd = NULL;
det_ctx->hcbd_buffers_size = 0;
det_ctx->hcbd_buffers_list_len = 0;
return -1;
}
det_ctx->hcbd = ptmp;
memset(det_ctx->hcbd + det_ctx->hcbd_buffers_size, 0, BUFFER_STEP * sizeof(HttpReassembledBody));
det_ctx->hcbd_buffers_size += BUFFER_STEP;
uint16_t i;
for (i = det_ctx->hcbd_buffers_list_len; i < ((uint16_t)size); i++) {
det_ctx->hcbd[i].buffer_len = 0;
det_ctx->hcbd[i].offset = 0;
}
}
return 0;
}
/**
*/
static uint8_t *DetectEngineHCBDGetBufferForTX(htp_tx_t *tx, uint64_t tx_id,
DetectEngineCtx *de_ctx,
DetectEngineThreadCtx *det_ctx,
Flow *f, HtpState *htp_state,
uint8_t flags,
uint32_t *buffer_len,
uint32_t *stream_start_offset)
{
int index = 0;
uint8_t *buffer = NULL;
*buffer_len = 0;
*stream_start_offset = 0;
if (det_ctx->hcbd_buffers_list_len == 0) {
/* get the inspect id to use as a 'base id' */
uint64_t base_inspect_id = AppLayerParserGetTransactionInspectId(f->alparser, flags);
BUG_ON(base_inspect_id > tx_id);
/* see how many space we need for the current tx_id */
uint64_t txs = (tx_id - base_inspect_id) + 1;
if (HCBDCreateSpace(det_ctx, txs) < 0)
goto end;
index = (tx_id - base_inspect_id);
det_ctx->hcbd_start_tx_id = base_inspect_id;
det_ctx->hcbd_buffers_list_len = txs;
} else {
if ((tx_id - det_ctx->hcbd_start_tx_id) < det_ctx->hcbd_buffers_list_len) {
if (det_ctx->hcbd[(tx_id - det_ctx->hcbd_start_tx_id)].buffer_len != 0) {
*buffer_len = det_ctx->hcbd[(tx_id - det_ctx->hcbd_start_tx_id)].buffer_len;
*stream_start_offset = det_ctx->hcbd[(tx_id - det_ctx->hcbd_start_tx_id)].offset;
return det_ctx->hcbd[(tx_id - det_ctx->hcbd_start_tx_id)].buffer;
}
} else {
uint64_t txs = (tx_id - det_ctx->hcbd_start_tx_id) + 1;
if (HCBDCreateSpace(det_ctx, txs) < 0)
goto end; /* let's consider it as stage not done for now */
det_ctx->hcbd_buffers_list_len = txs;
}
index = (tx_id - det_ctx->hcbd_start_tx_id);
}
HtpTxUserData *htud = (HtpTxUserData *)htp_tx_get_user_data(tx);
if (htud == NULL) {
SCLogDebug("no htud");
goto end;
}
/* no new data */
if (htud->request_body.body_inspected == htud->request_body.content_len_so_far) {
SCLogDebug("no new data");
goto end;
}
HtpBodyChunk *cur = htud->request_body.first;
if (cur == NULL) {
SCLogDebug("No http chunks to inspect for this transacation");
goto end;
}
/* inspect the body if the transfer is complete or we have hit
* our body size limit */
if ((htp_state->cfg->request_body_limit == 0 ||
htud->request_body.content_len_so_far < htp_state->cfg->request_body_limit) &&
htud->request_body.content_len_so_far < htp_state->cfg->request_inspect_min_size &&
!(AppLayerParserGetStateProgress(IPPROTO_TCP, ALPROTO_HTTP, tx, flags) > HTP_REQUEST_BODY) &&
!(flags & STREAM_EOF)) {
SCLogDebug("we still haven't seen the entire request body. "
"Let's defer body inspection till we see the "
"entire body.");
goto end;
}
int first = 1;
while (cur != NULL) {
/* see if we can filter out chunks */
if (htud->request_body.body_inspected > 0) {
if (cur->stream_offset < htud->request_body.body_inspected) {
if ((htud->request_body.body_inspected - cur->stream_offset) > htp_state->cfg->request_inspect_min_size) {
cur = cur->next;
continue;
} else {
/* include this one */
}
} else {
/* include this one */
}
}
if (first) {
det_ctx->hcbd[index].offset = cur->stream_offset;
first = 0;
}
/* see if we need to grow the buffer */
if (det_ctx->hcbd[index].buffer == NULL || (det_ctx->hcbd[index].buffer_len + cur->len) > det_ctx->hcbd[index].buffer_size) {
void *ptmp;
det_ctx->hcbd[index].buffer_size += cur->len * 2;
if ((ptmp = SCRealloc(det_ctx->hcbd[index].buffer, det_ctx->hcbd[index].buffer_size)) == NULL) {
SCFree(det_ctx->hcbd[index].buffer);
det_ctx->hcbd[index].buffer = NULL;
det_ctx->hcbd[index].buffer_size = 0;
det_ctx->hcbd[index].buffer_len = 0;
goto end;
}
det_ctx->hcbd[index].buffer = ptmp;
}
memcpy(det_ctx->hcbd[index].buffer + det_ctx->hcbd[index].buffer_len, cur->data, cur->len);
det_ctx->hcbd[index].buffer_len += cur->len;
cur = cur->next;
}
/* update inspected tracker */
htud->request_body.body_inspected = htud->request_body.last->stream_offset + htud->request_body.last->len;
buffer = det_ctx->hcbd[index].buffer;
*buffer_len = det_ctx->hcbd[index].buffer_len;
*stream_start_offset = det_ctx->hcbd[index].offset;
end:
return buffer;
}
/** \brief Http client body pattern match -- searches for one pattern per
* signature.
*
* \param det_ctx Detection engine thread ctx.
* \param body The request body to inspect.
* \param body_len Body length.
*
* \retval ret Number of matches.
*/
static inline uint32_t HttpClientBodyPatternSearch(DetectEngineThreadCtx *det_ctx,
const uint8_t *body, const uint32_t body_len,
const uint8_t flags)
{
SCEnter();
uint32_t ret = 0;
DEBUG_VALIDATE_BUG_ON(flags & STREAM_TOCLIENT);
DEBUG_VALIDATE_BUG_ON(det_ctx->sgh->mpm_hcbd_ctx_ts == NULL);
if (body_len >= det_ctx->sgh->mpm_hcbd_ctx_ts->minlen) {
ret = mpm_table[det_ctx->sgh->mpm_hcbd_ctx_ts->mpm_type].
Search(det_ctx->sgh->mpm_hcbd_ctx_ts, &det_ctx->mtcu,
&det_ctx->pmq, body, body_len);
}
SCReturnUInt(ret);
}
int DetectEngineRunHttpClientBodyMpm(DetectEngineCtx *de_ctx,
DetectEngineThreadCtx *det_ctx, Flow *f,
HtpState *htp_state, uint8_t flags,
void *tx, uint64_t idx)
{
uint32_t cnt = 0;
uint32_t buffer_len = 0;
uint32_t stream_start_offset = 0;
uint8_t *buffer = DetectEngineHCBDGetBufferForTX(tx, idx,
de_ctx, det_ctx,
f, htp_state,
flags,
&buffer_len,
&stream_start_offset);
if (buffer_len == 0)
goto end;
cnt = HttpClientBodyPatternSearch(det_ctx, buffer, buffer_len, flags);
end:
return cnt;
}
int DetectEngineInspectHttpClientBody(ThreadVars *tv,
DetectEngineCtx *de_ctx,
DetectEngineThreadCtx *det_ctx,
Signature *s, Flow *f, uint8_t flags,
void *alstate, void *tx, uint64_t tx_id)
{
HtpState *htp_state = (HtpState *)alstate;
uint32_t buffer_len = 0;
uint32_t stream_start_offset = 0;
uint8_t *buffer = DetectEngineHCBDGetBufferForTX(tx, tx_id,
de_ctx, det_ctx,
f, htp_state,
flags,
&buffer_len,
&stream_start_offset);
if (buffer_len == 0)
goto end;
det_ctx->buffer_offset = 0;
det_ctx->discontinue_matching = 0;
det_ctx->inspection_recursion_counter = 0;
int r = DetectEngineContentInspection(de_ctx, det_ctx, s, s->sm_lists[DETECT_SM_LIST_HCBDMATCH],
f,
buffer,
buffer_len,
stream_start_offset,
DETECT_ENGINE_CONTENT_INSPECTION_MODE_HCBD, NULL);
if (r == 1)
return DETECT_ENGINE_INSPECT_SIG_MATCH;
end:
if (AppLayerParserGetStateProgress(IPPROTO_TCP, ALPROTO_HTTP, tx, flags) > HTP_REQUEST_BODY)
return DETECT_ENGINE_INSPECT_SIG_CANT_MATCH;
else
return DETECT_ENGINE_INSPECT_SIG_NO_MATCH;
}
void DetectEngineCleanHCBDBuffers(DetectEngineThreadCtx *det_ctx)
{
if (det_ctx->hcbd_buffers_list_len > 0) {
for (int i = 0; i < det_ctx->hcbd_buffers_list_len; i++) {
det_ctx->hcbd[i].buffer_len = 0;
det_ctx->hcbd[i].offset = 0;
}
}
det_ctx->hcbd_buffers_list_len = 0;
det_ctx->hcbd_start_tx_id = 0;
return;
}
/***********************************Unittests**********************************/
#ifdef UNITTESTS
struct TestSteps {
const uint8_t *input;
size_t input_size; /**< if 0 strlen will be used */
int direction; /**< STREAM_TOSERVER, STREAM_TOCLIENT */
int expect;
};
static int RunTest (struct TestSteps *steps, const char *sig, const char *yaml)
{
TcpSession ssn;
Flow f;
Packet *p = NULL;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
int result = 0;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
if (yaml) {
ConfCreateContextBackup();
ConfInit();
HtpConfigCreateBackup();
ConfYamlLoadString(yaml, strlen(yaml));
HTPConfigure();
}
StreamTcpInitConfig(TRUE);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.proto = IPPROTO_TCP;
f.flags |= FLOW_IPV4;
f.alproto = ALPROTO_HTTP;
SCLogDebug("sig %s", sig);
DetectEngineAppendSig(de_ctx, (char *)sig);
de_ctx->flags |= DE_QUIET;
if (de_ctx->sig_list == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
struct TestSteps *b = steps;
int i = 0;
while (b->input != NULL) {
SCLogDebug("chunk %p %d", b, i);
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
if (p == NULL)
goto end;
p->flow = &f;
p->flowflags = (b->direction == STREAM_TOSERVER) ? FLOW_PKT_TOSERVER : FLOW_PKT_TOCLIENT;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
SCMutexLock(&f.m);
int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, b->direction,
(uint8_t *)b->input,
b->input_size ? b->input_size : strlen((const char *)b->input));
if (r != 0) {
printf("toserver chunk %d returned %" PRId32 ", expected 0: ", i+1, r);
result = 0;
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
int match = PacketAlertCheck(p, 1);
if (b->expect != match) {
printf("rule matching mismatch: ");
goto end;
}
UTHFreePackets(&p, 1);
p = NULL;
b++;
i++;
}
result = 1;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
if (yaml) {
HtpConfigRestoreBackup();
ConfRestoreContextBackup();
}
return result;
}
static int DetectEngineHttpClientBodyTest01(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1This\"; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest02(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 19\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; offset:5; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest03(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; offset:16; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest04(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:!\"body1\"; http_client_body; offset:16; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest05(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; depth:25; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest06(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:!\"body1\"; http_client_body; depth:25; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest07(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:!\"body1\"; http_client_body; depth:15; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest08(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"This is dummy body1This is dummy message body2\"; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest09(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:\"This\"; http_client_body; within:5; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest10(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:!\"boom\"; http_client_body; within:5; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest11(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:\"boom\"; http_client_body; within:5; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest12(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:!\"This\"; http_client_body; within:5; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest13(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:\"dummy\"; http_client_body; distance:5; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest14(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:!\"dummy\"; http_client_body; distance:10; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest15(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:\"dummy\"; http_client_body; distance:10; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest16(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:!\"dummy\"; http_client_body; distance:5; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest17(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 19\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:\"bambu\"; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest18(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 19\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"body1\"; http_client_body; content:\"bambu\"; http_client_body; fast_pattern; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest19(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 19\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"bambu\"; http_client_body; content:\"is\"; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest20(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 19\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"is\"; http_client_body; fast_pattern; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest21(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (pcre:/body1/P; content:!\"dummy\"; http_client_body; within:7; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest22(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (pcre:/body1/P; content:!\"dummy\"; within:7; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest23(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (pcre:/body1/P; content:!\"dummy\"; distance:3; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest24(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (pcre:/body1/P; content:!\"dummy\"; distance:13; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest25(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (pcre:/body1/P; content:\"dummy\"; within:15; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest26(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (pcre:/body1/P; content:\"dummy\"; within:10; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest27(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 1 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (pcre:/body1/P; content:\"dummy\"; distance:8; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest28(void)
{
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (pcre:/body1/P; content:\"dummy\"; distance:14; http_client_body; sid:1;)";
return RunTest(steps, sig, NULL);
}
static int DetectEngineHttpClientBodyTest29(void)
{
const char *request_buffer = "GET /one HTTP/1.0\r\n"
"Host: localhost\r\n\r\n";
#define TOTAL_REQUESTS 45
uint8_t *http_buf = SCMalloc(TOTAL_REQUESTS * strlen(request_buffer));
if (unlikely(http_buf == NULL))
return 0;
for (int i = 0; i < TOTAL_REQUESTS; i++) {
memcpy(http_buf + i * strlen(request_buffer), request_buffer,
strlen(request_buffer));
}
uint32_t http_buf_len = TOTAL_REQUESTS * strlen(request_buffer);
#undef TOTAL_REQUESTS
struct TestSteps steps[] = {
{ (const uint8_t *)http_buf,
(size_t)http_buf_len, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"HTTP/1.0 200 ok\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 5\r\n"
"\r\n"
"dummy",
0, STREAM_TOCLIENT, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"dummyone\"; fast_pattern:0,3; http_server_body; sid:1;)";
int result = RunTest(steps, sig, NULL);
SCFree(http_buf);
return result;
}
static int DetectEngineHttpClientBodyTest30(void)
{
const char yaml[] = "\
%YAML 1.1\n\
---\n\
libhtp:\n\
\n\
default-config:\n\
personality: IDS\n\
request-body-limit: 0\n\
response-body-limit: 0\n\
\n\
request-body-inspect-window: 0\n\
response-body-inspect-window: 0\n\
request-body-minimal-inspect-size: 0\n\
response-body-minimal-inspect-size: 0\n\
";
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"bags\"; within:4; http_client_body; sid:1;)";
return RunTest(steps, sig, yaml);
}
static int DetectEngineHttpClientBodyTest31(void)
{
const char yaml[] = "\
%YAML 1.1\n\
---\n\
libhtp:\n\
\n\
default-config:\n\
personality: IDS\n\
request-body-limit: 0\n\
response-body-limit: 0\n\
\n\
request-body-inspect-window: 0\n\
response-body-inspect-window: 0\n\
request-body-minimal-inspect-size: 0\n\
response-body-minimal-inspect-size: 0\n\
";
struct TestSteps steps[] = {
{ (const uint8_t *)"GET /index.html HTTP/1.1\r\n"
"Host: www.openinfosecfoundation.org\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 46\r\n"
"\r\n"
"This is dummy body1",
0, STREAM_TOSERVER, 0 },
{ (const uint8_t *)"This is dummy message body2",
0, STREAM_TOSERVER, 0 },
{ NULL, 0, 0, 0 },
};
const char *sig = "alert http any any -> any any (content:\"bags\"; depth:4; http_client_body; sid:1;)";
return RunTest(steps, sig, yaml);
}
#endif /* UNITTESTS */
void DetectEngineHttpClientBodyRegisterTests(void)
{
#ifdef UNITTESTS
UtRegisterTest("DetectEngineHttpClientBodyTest01",
DetectEngineHttpClientBodyTest01);
UtRegisterTest("DetectEngineHttpClientBodyTest02",
DetectEngineHttpClientBodyTest02);
UtRegisterTest("DetectEngineHttpClientBodyTest03",
DetectEngineHttpClientBodyTest03);
UtRegisterTest("DetectEngineHttpClientBodyTest04",
DetectEngineHttpClientBodyTest04);
UtRegisterTest("DetectEngineHttpClientBodyTest05",
DetectEngineHttpClientBodyTest05);
UtRegisterTest("DetectEngineHttpClientBodyTest06",
DetectEngineHttpClientBodyTest06);
UtRegisterTest("DetectEngineHttpClientBodyTest07",
DetectEngineHttpClientBodyTest07);
UtRegisterTest("DetectEngineHttpClientBodyTest08",
DetectEngineHttpClientBodyTest08);
UtRegisterTest("DetectEngineHttpClientBodyTest09",
DetectEngineHttpClientBodyTest09);
UtRegisterTest("DetectEngineHttpClientBodyTest10",
DetectEngineHttpClientBodyTest10);
UtRegisterTest("DetectEngineHttpClientBodyTest11",
DetectEngineHttpClientBodyTest11);
UtRegisterTest("DetectEngineHttpClientBodyTest12",
DetectEngineHttpClientBodyTest12);
UtRegisterTest("DetectEngineHttpClientBodyTest13",
DetectEngineHttpClientBodyTest13);
UtRegisterTest("DetectEngineHttpClientBodyTest14",
DetectEngineHttpClientBodyTest14);
UtRegisterTest("DetectEngineHttpClientBodyTest15",
DetectEngineHttpClientBodyTest15);
UtRegisterTest("DetectEngineHttpClientBodyTest16",
DetectEngineHttpClientBodyTest16);
UtRegisterTest("DetectEngineHttpClientBodyTest17",
DetectEngineHttpClientBodyTest17);
UtRegisterTest("DetectEngineHttpClientBodyTest18",
DetectEngineHttpClientBodyTest18);
UtRegisterTest("DetectEngineHttpClientBodyTest19",
DetectEngineHttpClientBodyTest19);
UtRegisterTest("DetectEngineHttpClientBodyTest20",
DetectEngineHttpClientBodyTest20);
UtRegisterTest("DetectEngineHttpClientBodyTest21",
DetectEngineHttpClientBodyTest21);
UtRegisterTest("DetectEngineHttpClientBodyTest22",
DetectEngineHttpClientBodyTest22);
UtRegisterTest("DetectEngineHttpClientBodyTest23",
DetectEngineHttpClientBodyTest23);
UtRegisterTest("DetectEngineHttpClientBodyTest24",
DetectEngineHttpClientBodyTest24);
UtRegisterTest("DetectEngineHttpClientBodyTest25",
DetectEngineHttpClientBodyTest25);
UtRegisterTest("DetectEngineHttpClientBodyTest26",
DetectEngineHttpClientBodyTest26);
UtRegisterTest("DetectEngineHttpClientBodyTest27",
DetectEngineHttpClientBodyTest27);
UtRegisterTest("DetectEngineHttpClientBodyTest28",
DetectEngineHttpClientBodyTest28);
UtRegisterTest("DetectEngineHttpClientBodyTest29",
DetectEngineHttpClientBodyTest29);
UtRegisterTest("DetectEngineHttpClientBodyTest30",
DetectEngineHttpClientBodyTest30);
UtRegisterTest("DetectEngineHttpClientBodyTest31",
DetectEngineHttpClientBodyTest31);
#endif /* UNITTESTS */
return;
}
/**
* @}
*/