static int DetectHttpRequestLineWrapper(const char *sig, const int expectation)
{
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: This is dummy message body\r\n"
"Content-Type: text/html\r\n"
"\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
FAIL_IF_NULL(alp_tctx);
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FAIL_IF_NULL(p);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.proto = IPPROTO_TCP;
f.flags |= FLOW_IPV4;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, sig);
FAIL_IF_NULL(de_ctx->sig_list);
int sid = de_ctx->sig_list->id;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParserParse(&th_v, alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
FAIL_IF(r != 0);
http_state = f.alstate;
FAIL_IF_NULL(http_state);
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
r = PacketAlertCheck(p, sid);
FAIL_IF_NOT(r == expectation);
AppLayerParserThreadCtxFree(alp_tctx);
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
PASS;
}
/** \test Check a signature with an request method and negation of the same */
static int DetectHttpMethodSigTest04(void)
{
int result = 0;
Flow f;
uint8_t httpbuf1[] = "GET / HTTP/1.0\r\n"
"Host: foo.bar.tld\r\n"
"\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
TcpSession ssn;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
HtpState *http_state = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
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.flags |= FLOW_IPV4;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,
"alert tcp any any -> any any (msg:\"Testing http_method\"; "
"content:\"GET\"; http_method; sid:1;)");
if (s == NULL) {
goto end;
}
s = s->next = SigInit(de_ctx,
"alert tcp any any -> any any (msg:\"Testing http_method\"; "
"content:!\"GET\"; http_method; sid:2;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_HTTP,
STREAM_TOSERVER, httpbuf1, httplen1);
if (r != 0) {
SCLogDebug("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
goto end;
}
FLOWLOCK_UNLOCK(&f);
http_state = f.alstate;
if (http_state == NULL) {
SCLogDebug("no http state: ");
goto end;
}
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sid 1 didn't match but should have: ");
goto end;
}
if (PacketAlertCheck(p, 2)) {
printf("sid 2 matched but shouldn't have: ");
goto end;
}
result = 1;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (de_ctx != NULL) {
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
}
if (det_ctx != NULL) {
DetectEngineThreadCtxDeinit(&th_v, (void *) det_ctx);
}
if (de_ctx != NULL) {
DetectEngineCtxFree(de_ctx);
}
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/**
* \test Test matching on a simple google.com SNI with pcre
*/
static int DetectTlsSniTest02(void)
{
/* client hello */
uint8_t buf[] = { 0x16, 0x03, 0x03, 0x00, 0x82, 0x01, 0x00, 0x00, 0x7E,
0x03, 0x03, 0x57, 0x04, 0x9F, 0x5D, 0xC9, 0x5C, 0x87,
0xAE, 0xF2, 0xA7, 0x4A, 0xFC, 0x59, 0x78, 0x23, 0x31,
0x61, 0x2D, 0x29, 0x92, 0xB6, 0x70, 0xA5, 0xA1, 0xFC,
0x0E, 0x79, 0xFE, 0xC3, 0x97, 0x37, 0xC0, 0x00, 0x00,
0x44, 0x00, 0x04, 0x00, 0x05, 0x00, 0x0A, 0x00, 0x0D,
0x00, 0x10, 0x00, 0x13, 0x00, 0x16, 0x00, 0x2F, 0x00,
0x30, 0x00, 0x31, 0x00, 0x32, 0x00, 0x33, 0x00, 0x35,
0x00, 0x36, 0x00, 0x37, 0x00, 0x38, 0x00, 0x39, 0x00,
0x3C, 0x00, 0x3D, 0x00, 0x3E, 0x00, 0x3F, 0x00, 0x40,
0x00, 0x41, 0x00, 0x44, 0x00, 0x45, 0x00, 0x66, 0x00,
0x67, 0x00, 0x68, 0x00, 0x69, 0x00, 0x6A, 0x00, 0x6B,
0x00, 0x84, 0x00, 0x87, 0x00, 0xFF, 0x01, 0x00, 0x00,
0x13, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x0D, 0x00, 0x00,
0x0A, 0x67, 0x6F, 0x6F, 0x67, 0x6C, 0x65, 0x2E, 0x63,
0x6F, 0x6D, };
Flow f;
SSLState *ssl_state = NULL;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars tv;
DetectEngineThreadCtx *det_ctx = NULL;
TcpSession ssn;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&tv, 0, sizeof(ThreadVars));
memset(&f, 0, sizeof(Flow));
memset(&ssn, 0, sizeof(TcpSession));
p = UTHBuildPacketReal(buf, sizeof(buf), IPPROTO_TCP,
"192.168.1.5", "192.168.1.1",
41424, 443);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.flags |= FLOW_IPV4;
f.proto = IPPROTO_TCP;
f.protomap = FlowGetProtoMapping(f.proto);
p->flow = &f;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
p->flowflags |= FLOW_PKT_TOSERVER|FLOW_PKT_ESTABLISHED;
f.alproto = ALPROTO_TLS;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->mpm_matcher = DEFAULT_MPM;
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert tls any any -> any any "
"(msg:\"Test tls_sni option\"; "
"tls_sni; content:\"google\"; nocase; "
"pcre:\"/google\\.com$/i\"; sid:1;)");
FAIL_IF_NULL(s);
s = DetectEngineAppendSig(de_ctx, "alert tls any any -> any any "
"(msg:\"Test tls_sni option\"; "
"tls_sni; content:\"google\"; nocase; "
"pcre:\"/^\\.[a-z]{2,3}$/iR\"; sid:2;)");
FAIL_IF_NULL(s);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_TLS,
STREAM_TOSERVER, buf, sizeof(buf));
FLOWLOCK_UNLOCK(&f);
FAIL_IF(r != 0);
ssl_state = f.alstate;
FAIL_IF_NULL(ssl_state);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p);
FAIL_IF_NOT(PacketAlertCheck(p, 1));
FAIL_IF_NOT(PacketAlertCheck(p, 2));
AppLayerParserThreadCtxFree(alp_tctx);
DetectEngineThreadCtxDeinit(&tv, det_ctx);
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePacket(p);
PASS;
}
static int FlowBitsTestSig08(void)
{
uint8_t *buf = (uint8_t *)
"GET /one/ HTTP/1.1\r\n"
"Host: one.example.org\r\n"
"\r\n";
uint16_t buflen = strlen((char *)buf);
Packet *p = SCMalloc(SIZE_OF_PACKET);
if (unlikely(p == NULL))
return 0;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
DetectEngineCtx *de_ctx = NULL;
Flow f;
GenericVar flowvar, *gv = NULL;
int result = 0;
int idx = 0;
memset(p, 0, SIZE_OF_PACKET);
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(Flow));
memset(&flowvar, 0, sizeof(GenericVar));
FLOW_INITIALIZE(&f);
p->flow = &f;
p->flow->flowvar = &flowvar;
p->src.family = AF_INET;
p->dst.family = AF_INET;
p->payload = buf;
p->payload_len = buflen;
p->proto = IPPROTO_TCP;
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert ip any any -> any any (msg:\"Flowbit set\"; flowbits:set,myflow2; sid:10;)");
if (s == NULL) {
goto end;
}
s = s->next = SigInit(de_ctx,"alert ip any any -> any any (msg:\"Flowbit unset\"; flowbits:toggle,myflow2; sid:11;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
idx = VariableNameGetIdx(de_ctx, "myflow", VAR_TYPE_FLOW_BIT);
gv = p->flow->flowvar;
for ( ; gv != NULL; gv = gv->next) {
if (gv->type == DETECT_FLOWBITS && gv->idx == idx) {
result = 1;
}
}
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
if(gv) GenericVarFree(gv);
FLOW_DESTROY(&f);
SCFree(p);
PASS_IF(result == 0);
end:
if (de_ctx != NULL) {
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
}
if (det_ctx != NULL) {
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
}
if (de_ctx != NULL) {
DetectEngineCtxFree(de_ctx);
}
if(gv) GenericVarFree(gv);
FLOW_DESTROY(&f);
SCFree(p);
PASS_IF(result == 0);
}
/** \test simple google.com query matching (TCP splicing) */
static int DetectDnsQueryTest04(void)
{
/* google.com */
uint8_t buf1[] = { 0x00, 28,
0x10, 0x32, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, };
uint8_t buf2[] = { 0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C,
0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00,
0x00, 0x10, 0x00, 0x01, };
Flow f;
RSDNSState *dns_state = NULL;
Packet *p1 = NULL, *p2 = NULL;
Signature *s = NULL;
ThreadVars tv;
DetectEngineThreadCtx *det_ctx = NULL;
TcpSession ssn;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&tv, 0, sizeof(ThreadVars));
memset(&f, 0, sizeof(Flow));
memset(&ssn, 0, sizeof(TcpSession));
p1 = UTHBuildPacketReal(buf1, sizeof(buf1), IPPROTO_TCP,
"192.168.1.5", "192.168.1.1",
41424, 53);
p2 = UTHBuildPacketReal(buf2, sizeof(buf2), IPPROTO_TCP,
"192.168.1.5", "192.168.1.1",
41424, 53);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.flags |= FLOW_IPV4;
f.proto = IPPROTO_TCP;
f.protomap = FlowGetProtoMapping(f.proto);
f.alproto = ALPROTO_DNS;
p1->flow = &f;
p1->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
p1->flowflags |= FLOW_PKT_TOSERVER|FLOW_PKT_ESTABLISHED;
p2->flow = &f;
p2->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
p2->flowflags |= FLOW_PKT_TOSERVER|FLOW_PKT_ESTABLISHED;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->mpm_matcher = mpm_default_matcher;
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test dns_query option\"; "
"dns_query; content:\"google\"; nocase; sid:1;)");
FAIL_IF_NULL(s);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DNS,
STREAM_TOSERVER, buf1, sizeof(buf1));
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
FAIL;
}
FLOWLOCK_UNLOCK(&f);
dns_state = f.alstate;
FAIL_IF_NULL(dns_state);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p1);
if (PacketAlertCheck(p1, 1)) {
printf("sig 1 alerted, but it should not have: ");
FAIL;
}
FLOWLOCK_WRLOCK(&f);
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DNS, STREAM_TOSERVER,
buf2, sizeof(buf2));
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0\n", r);
FLOWLOCK_UNLOCK(&f);
FAIL;
}
FLOWLOCK_UNLOCK(&f);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p2);
if (!(PacketAlertCheck(p2, 1))) {
printf("sig 1 didn't alert, but it should have: ");
FAIL;
}
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (det_ctx != NULL)
DetectEngineThreadCtxDeinit(&tv, det_ctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePacket(p1);
UTHFreePacket(p2);
PASS;
}
/** \test simple google.com query matching, pcre */
static int DetectDnsQueryTest06(void)
{
/* google.com */
uint8_t buf[] = { 0x10, 0x32, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C,
0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00,
0x00, 0x10, 0x00, 0x01, };
Flow f;
RSDNSState *dns_state = NULL;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars tv;
DetectEngineThreadCtx *det_ctx = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&tv, 0, sizeof(ThreadVars));
memset(&f, 0, sizeof(Flow));
p = UTHBuildPacketReal(buf, sizeof(buf), IPPROTO_UDP,
"192.168.1.5", "192.168.1.1",
41424, 53);
FLOW_INITIALIZE(&f);
f.flags |= FLOW_IPV4;
f.proto = IPPROTO_UDP;
f.protomap = FlowGetProtoMapping(f.proto);
p->flow = &f;
p->flags |= PKT_HAS_FLOW;
p->flowflags |= FLOW_PKT_TOSERVER;
f.alproto = ALPROTO_DNS;
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->mpm_matcher = mpm_default_matcher;
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test dns_query option\"; "
"dns_query; content:\"google\"; nocase; "
"pcre:\"/google\\.com$/i\"; sid:1;)");
FAIL_IF_NULL(s);
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test dns_query option\"; "
"dns_query; content:\"google\"; nocase; "
"pcre:\"/^\\.[a-z]{2,3}$/iR\"; sid:2;)");
FAIL_IF_NULL(s);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DNS,
STREAM_TOSERVER, buf, sizeof(buf));
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
FAIL;
}
FLOWLOCK_UNLOCK(&f);
dns_state = f.alstate;
FAIL_IF_NULL(dns_state);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sig 1 didn't alert, but it should have: ");
FAIL;
}
if (!(PacketAlertCheck(p, 2))) {
printf("sig 2 didn't alert, but it should have: ");
FAIL;
}
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (det_ctx != NULL)
DetectEngineThreadCtxDeinit(&tv, det_ctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FLOW_DESTROY(&f);
UTHFreePacket(p);
PASS;
}
/** \test Send a get request in three chunks + more data. */
static int DetectSshVersionTestDetect01(void)
{
Flow f;
uint8_t sshbuf1[] = "SSH-1.";
uint32_t sshlen1 = sizeof(sshbuf1) - 1;
uint8_t sshbuf2[] = "10-PuTTY_2.123" ;
uint32_t sshlen2 = sizeof(sshbuf2) - 1;
uint8_t sshbuf3[] = "\n";
uint32_t sshlen3 = sizeof(sshbuf3) - 1;
uint8_t sshbuf4[] = "whatever...";
uint32_t sshlen4 = sizeof(sshbuf4) - 1;
TcpSession ssn;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FAIL_IF_NULL(p);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_SSH;
f.proto = IPPROTO_TCP;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL (de_ctx);
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert ssh any any -> any any (msg:\"SSH\"; ssh.protoversion:1.10; sid:1;)");
FAIL_IF_NULL(s);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SCLogDebug("==> 1");
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SSH,
STREAM_TOSERVER, sshbuf1, sshlen1);
FAIL_IF(r != 0);
SCLogDebug("==> 2");
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SSH, STREAM_TOSERVER,
sshbuf2, sshlen2);
FAIL_IF(r != 0);
SCLogDebug("==> 3");
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SSH, STREAM_TOSERVER,
sshbuf3, sshlen3);
FAIL_IF(r != 0);
SCLogDebug("==> 4");
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SSH, STREAM_TOSERVER,
sshbuf4, sshlen4);
FAIL_IF(r != 0);
SshState *ssh_state = f.alstate;
FAIL_IF_NULL(ssh_state);
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(!(PacketAlertCheck(p, 1)));
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
AppLayerParserThreadCtxFree(alp_tctx);
PASS;
}
/**
*\test Test that the negated http_header content matches against a
* http request which doesn't hold the content.
*/
static int DetectHttpRawHeaderTest11(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;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
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.flags |= FLOW_IPV4;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
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\"; flow:to_server; "
"content:!\"lalalalala\"; 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);
SCMutexLock(&f.m);
int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
http_state = f.alstate;
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 (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);
return result;
}
/** \test Send a get request in three chunks + more data. */
static int DetectTlsVersionTestDetect01(void)
{
int result = 0;
Flow f;
uint8_t tlsbuf1[] = { 0x16 };
uint32_t tlslen1 = sizeof(tlsbuf1);
uint8_t tlsbuf2[] = { 0x03 };
uint32_t tlslen2 = sizeof(tlsbuf2);
uint8_t tlsbuf3[] = { 0x01 };
uint32_t tlslen3 = sizeof(tlsbuf3);
uint8_t tlsbuf4[] = { 0x01, 0x00, 0x00, 0xad, 0x03, 0x01 };
uint32_t tlslen4 = sizeof(tlsbuf4);
TcpSession ssn;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
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;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_TLS;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert tls any any -> any any (msg:\"TLS\"; tls.version:1.0; sid:1;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SCMutexLock(&f.m);
int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, tlsbuf1, tlslen1);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, tlsbuf2, tlslen2);
if (r != 0) {
printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, tlsbuf3, tlslen3);
if (r != 0) {
printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, tlsbuf4, tlslen4);
if (r != 0) {
printf("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
SSLState *ssl_state = f.alstate;
if (ssl_state == NULL) {
printf("no tls state: ");
goto end;
}
if (ssl_state->client_connp.content_type != 0x16) {
printf("expected content_type %" PRIu8 ", got %" PRIu8 ": ",
0x16, ssl_state->client_connp.content_type);
goto end;
}
if (ssl_state->client_connp.version != TLS_VERSION_10) {
printf("expected version %04" PRIu16 ", got %04" PRIu16 ": ",
TLS_VERSION_10, ssl_state->client_connp.version);
goto end;
}
SCLogDebug("ssl_state is at %p, ssl_state->server_version 0x%02X "
"ssl_state->client_version 0x%02X",
ssl_state, ssl_state->server_connp.version,
ssl_state->client_connp.version);
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
goto end;
}
result = 1;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
static int FlowBitsTestSig06(void)
{
uint8_t *buf = (uint8_t *)
"GET /one/ HTTP/1.1\r\n"
"Host: one.example.org\r\n"
"\r\n";
uint16_t buflen = strlen((char *)buf);
Packet *p = SCMalloc(SIZE_OF_PACKET);
FAIL_IF_NULL(p);
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
DetectEngineCtx *de_ctx = NULL;
Flow f;
GenericVar flowvar, *gv = NULL;
int result = 0;
uint32_t idx = 0;
memset(p, 0, SIZE_OF_PACKET);
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(Flow));
memset(&flowvar, 0, sizeof(GenericVar));
FLOW_INITIALIZE(&f);
p->flow = &f;
p->flow->flowvar = &flowvar;
p->src.family = AF_INET;
p->dst.family = AF_INET;
p->payload = buf;
p->payload_len = buflen;
p->proto = IPPROTO_TCP;
p->flags |= PKT_HAS_FLOW;
p->flowflags |= FLOW_PKT_TOSERVER;
de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert ip any any -> any any (msg:\"Flowbit set\"; flowbits:set,myflow; sid:10;)");
FAIL_IF_NULL(s);
idx = VarNameStoreSetupAdd("myflow", VAR_TYPE_FLOW_BIT);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
gv = p->flow->flowvar;
FAIL_IF_NULL(gv);
for ( ; gv != NULL; gv = gv->next) {
if (gv->type == DETECT_FLOWBITS && gv->idx == idx) {
result = 1;
}
}
FAIL_IF_NOT(result);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
FLOW_DESTROY(&f);
SCFree(p);
PASS;
}
static int DetectEngineSMTPFiledataTest01(void)
{
uint8_t mimemsg[] = {0x4D, 0x49, 0x4D, 0x45, 0x2D, 0x56, 0x65, 0x72,
0x73, 0x69, 0x6F, 0x6E, 0x3A, 0x20, 0x31, 0x2E,
0x30, 0x0D, 0x0A, 0x43, 0x6F, 0x6E, 0x74, 0x65,
0x6E, 0x74, 0x2D, 0x54, 0x79, 0x70, 0x65, 0x3A,
0x20, 0x74, 0x65, 0x78, 0x74, 0x2F, 0x70, 0x6C,
0x61, 0x69, 0x6E, 0x3B, 0x20, 0x63, 0x68, 0x61,
0x72, 0x73, 0x65, 0x74, 0x3D, 0x55, 0x54, 0x46,
0x2D, 0x38, 0x3B, 0x0D, 0x0A, 0x43, 0x6F, 0x6E,
0x74, 0x65, 0x6E, 0x74, 0x2D, 0x54, 0x72, 0x61,
0x6E, 0x73, 0x66, 0x65, 0x72, 0x2D, 0x45, 0x6E,
0x63, 0x6F, 0x64, 0x69, 0x6E, 0x67, 0x3A, 0x20,
0x37, 0x62, 0x69, 0x74, 0x0D, 0x0A, 0x43, 0x6F,
0x6E, 0x74, 0x65, 0x6E, 0x74, 0x2D, 0x44, 0x69,
0x73, 0x70, 0x6F, 0x73, 0x69, 0x74, 0x69, 0x6F,
0x6E, 0x3A, 0x20, 0x61, 0x74, 0x74, 0x61, 0x63,
0x68, 0x6D, 0x65, 0x6E, 0x74, 0x3B, 0x20, 0x66,
0x69, 0x6C, 0x65, 0x6E, 0x61, 0x6D, 0x65, 0x3D,
0x22, 0x74, 0x65, 0x73, 0x74, 0x2E, 0x74, 0x78,
0x74, 0x22, 0x0D, 0x0A, 0x0D, 0x0A, 0x6d, 0x65,
0x73, 0x73, 0x61, 0x67, 0x65,};
uint32_t mimemsg_len = sizeof(mimemsg) - 1;
TcpSession ssn;
Packet *p;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
SMTPState *smtp_state = NULL;
Flow f;
int result = 0;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
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.flags |= FLOW_IPV4;
f.alstate = SMTPStateAlloc();
MimeDecParseState *state = MimeDecInitParser(&f, NULL);
((MimeDecEntity *)state->stack->top->data)->ctnt_flags = CTNT_IS_ATTACHMENT;
state->body_begin = 1;
if (SMTPProcessDataChunk((uint8_t *)mimemsg, sizeof(mimemsg), state) != 0)
goto end;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST|PKT_STREAM_EOF;
f.alproto = ALPROTO_SMTP;
StreamTcpInitConfig(TRUE);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert smtp any any -> any any "
"(msg:\"file_data smtp test\"; "
"file_data; content:\"message\"; sid:1;)");
if (de_ctx->sig_list == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SCMutexLock(&f.m);
int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_SMTP, STREAM_TOSERVER, mimemsg, mimemsg_len);
if (r != 0) {
printf("AppLayerParse for smtp failed. Returned %d", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
smtp_state = f.alstate;
if (smtp_state == NULL) {
printf("no smtp state: ");
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 (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/** \test multi tx google.(com|net) query matching +
* app layer event */
static int DetectDnsQueryTest07(void)
{
/* google.com */
uint8_t buf1[] = { 0x10, 0x32, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C,
0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00,
0x00, 0x01, 0x00, 0x01, };
uint8_t buf2[] = { 0x10, 0x32, /* tx id */
0x81, 0x80|0x40, /* flags: resp, recursion desired, recusion available */
0x00, 0x01, /* 1 query */
0x00, 0x01, /* 1 answer */
0x00, 0x00, 0x00, 0x00, /* no auth rr, additional rr */
/* query record */
0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C, /* name */
0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00, /* name cont */
0x00, 0x01, 0x00, 0x01, /* type a, class in */
/* answer */
0xc0, 0x0c, /* ref to name in query above */
0x00, 0x01, 0x00, 0x01, /* type a, class in */
0x00, 0x01, 0x40, 0xef, /* ttl */
0x00, 0x04, /* data len */
0x01, 0x02, 0x03, 0x04 }; /* addr */
/* google.net */
uint8_t buf3[] = { 0x11, 0x33, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C,
0x65, 0x03, 0x6E, 0x65, 0x74, 0x00,
0x00, 0x10, 0x00, 0x01, };
int result = 0;
Flow f;
DNSState *dns_state = NULL;
Packet *p1 = NULL, *p2 = NULL, *p3 = NULL;
Signature *s = NULL;
ThreadVars tv;
DetectEngineThreadCtx *det_ctx = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&tv, 0, sizeof(ThreadVars));
memset(&f, 0, sizeof(Flow));
p1 = UTHBuildPacketReal(buf1, sizeof(buf1), IPPROTO_UDP,
"192.168.1.5", "192.168.1.1",
41424, 53);
p2 = UTHBuildPacketReal(buf2, sizeof(buf2), IPPROTO_UDP,
"192.168.1.5", "192.168.1.1",
41424, 53);
p3 = UTHBuildPacketReal(buf3, sizeof(buf3), IPPROTO_UDP,
"192.168.1.5", "192.168.1.1",
41424, 53);
FLOW_INITIALIZE(&f);
f.flags |= FLOW_IPV4;
f.proto = IPPROTO_UDP;
f.protomap = FlowGetProtoMapping(f.proto);
f.alproto = ALPROTO_DNS;
p1->flow = &f;
p1->flags |= PKT_HAS_FLOW;
p1->flowflags |= FLOW_PKT_TOSERVER;
p1->pcap_cnt = 1;
p2->flow = &f;
p2->flags |= PKT_HAS_FLOW;
p2->flowflags |= FLOW_PKT_TOCLIENT;
p2->pcap_cnt = 2;
p3->flow = &f;
p3->flags |= PKT_HAS_FLOW;
p3->flowflags |= FLOW_PKT_TOSERVER;
p3->pcap_cnt = 3;
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->mpm_matcher = DEFAULT_MPM;
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test dns_query option\"; "
"dns_query; content:\"google.com\"; nocase; sid:1;)");
if (s == NULL) {
goto end;
}
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test dns_query option\"; "
"dns_query; content:\"google.net\"; nocase; sid:2;)");
if (s == NULL) {
goto end;
}
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test Z flag event\"; "
"app-layer-event:dns.z_flag_set; sid:3;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
SCMutexLock(&f.m);
int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DNS, STREAM_TOSERVER, buf1, sizeof(buf1));
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
dns_state = f.alstate;
if (dns_state == NULL) {
printf("no dns state: ");
goto end;
}
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p1);
if (!(PacketAlertCheck(p1, 1))) {
printf("(p1) sig 1 didn't alert, but it should have: ");
goto end;
}
if (PacketAlertCheck(p1, 2)) {
printf("(p1) sig 2 did alert, but it should not have: ");
goto end;
}
SCMutexLock(&f.m);
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DNS, STREAM_TOCLIENT, buf2, sizeof(buf2));
if (r != -1) {
printf("toserver client 1 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p2);
if (PacketAlertCheck(p2, 1)) {
printf("(p2) sig 1 alerted, but it should not have: ");
goto end;
}
if (PacketAlertCheck(p2, 2)) {
printf("(p2) sig 2 alerted, but it should not have: ");
goto end;
}
if (!(PacketAlertCheck(p2, 3))) {
printf("(p2) sig 3 didn't alert, but it should have: ");
goto end;
}
SCMutexLock(&f.m);
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DNS, STREAM_TOSERVER, buf3, sizeof(buf3));
if (r != 0) {
printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p3);
if (PacketAlertCheck(p3, 1)) {
printf("(p3) sig 1 alerted, but it should not have: ");
goto end;
}
if (!(PacketAlertCheck(p3, 2))) {
printf("(p3) sig 2 didn't alert, but it should have: ");
goto end;
}
/** \todo should not alert, bug #839
if (PacketAlertCheck(p3, 3)) {
printf("(p3) sig 3 did alert, but it should not have: ");
goto end;
}
*/
result = 1;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (det_ctx != NULL)
DetectEngineThreadCtxDeinit(&tv, det_ctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
FLOW_DESTROY(&f);
UTHFreePacket(p1);
UTHFreePacket(p2);
UTHFreePacket(p3);
return result;
}
/** \test simple google.com query matching (TCP) */
static int DetectDnsQueryTest03(void)
{
/* google.com */
uint8_t buf[] = { 0x00, 28,
0x10, 0x32, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C,
0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00,
0x00, 0x10, 0x00, 0x01, };
int result = 0;
Flow f;
DNSState *dns_state = NULL;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars tv;
DetectEngineThreadCtx *det_ctx = NULL;
TcpSession ssn;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&tv, 0, sizeof(ThreadVars));
memset(&f, 0, sizeof(Flow));
memset(&ssn, 0, sizeof(TcpSession));
p = UTHBuildPacketReal(buf, sizeof(buf), IPPROTO_TCP,
"192.168.1.5", "192.168.1.1",
41424, 53);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.flags |= FLOW_IPV4;
f.proto = IPPROTO_TCP;
f.protomap = FlowGetProtoMapping(f.proto);
p->flow = &f;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
p->flowflags |= FLOW_PKT_TOSERVER|FLOW_PKT_ESTABLISHED;
f.alproto = ALPROTO_DNS;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->mpm_matcher = DEFAULT_MPM;
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test dns_query option\"; "
"content:\"google\"; nocase; dns_query; sid:1;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
SCMutexLock(&f.m);
int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DNS, STREAM_TOSERVER, buf, sizeof(buf));
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
dns_state = f.alstate;
if (dns_state == NULL) {
printf("no dns state: ");
goto end;
}
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("sig 1 didn't alert, but it should have: ");
goto end;
}
result = 1;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (det_ctx != NULL)
DetectEngineThreadCtxDeinit(&tv, det_ctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePacket(p);
return result;
}
/**
* \test Check the ftpbounce match, send a get request in three chunks
* + more data.
* \brief This test tests the ftpbounce condition match, based on the
* ftp layer parser
*/
static int DetectFtpbounceTestALMatch02(void)
{
int result = 0;
uint8_t ftpbuf1[] = { 'P','O' };
uint32_t ftplen1 = sizeof(ftpbuf1);
uint8_t ftpbuf2[] = { 'R', 'T' };
uint32_t ftplen2 = sizeof(ftpbuf2);
uint8_t ftpbuf3[] = { ' ', '8','0',',','5' };
uint32_t ftplen3 = sizeof(ftpbuf3);
uint8_t ftpbuf4[] = "8,0,33,10,20\r\n";
uint32_t ftplen4 = sizeof(ftpbuf4);
TcpSession ssn;
Flow f;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacketSrcDst(NULL, 0, IPPROTO_TCP, "1.2.3.4", "5.6.7.8");
FLOW_INITIALIZE(&f);
f.src.address.address_un_data32[0]=0x01020304;
f.protoctx =(void *)&ssn;
f.proto = IPPROTO_TCP;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_FTP;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert tcp any any -> any any "
"(msg:\"Ftp Bounce\"; ftpbounce; sid:1;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v,(void *)de_ctx,(void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_FTP,
STREAM_TOSERVER, ftpbuf1, ftplen1);
if (r != 0) {
SCLogDebug("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_FTP, STREAM_TOSERVER,
ftpbuf2, ftplen2);
if (r != 0) {
SCLogDebug("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
result = 0;
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_FTP, STREAM_TOSERVER,
ftpbuf3, ftplen3);
if (r != 0) {
SCLogDebug("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
result = 0;
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_FTP, STREAM_TOSERVER,
ftpbuf4, ftplen4);
if (r != 0) {
SCLogDebug("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
result = 0;
FLOWLOCK_UNLOCK(&f);
goto end;
}
FLOWLOCK_UNLOCK(&f);
FtpState *ftp_state = f.alstate;
if (ftp_state == NULL) {
SCLogDebug("no ftp state: ");
result = 0;
goto end;
}
if (ftp_state->command != FTP_COMMAND_PORT) {
SCLogDebug("expected command port not detected");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
goto end;
}
result = 1;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v,(void *)det_ctx);
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
/** \test Send a get request in three chunks + more data. */
static int DetectSshVersionTestDetect03(void)
{
int result = 0;
Flow f;
uint8_t sshbuf1[] = "SSH-1.";
uint32_t sshlen1 = sizeof(sshbuf1) - 1;
uint8_t sshbuf2[] = "7-PuTTY_2.123" ;
uint32_t sshlen2 = sizeof(sshbuf2) - 1;
uint8_t sshbuf3[] = "\n";
uint32_t sshlen3 = sizeof(sshbuf3) - 1;
uint8_t sshbuf4[] = "whatever...";
uint32_t sshlen4 = sizeof(sshbuf4) - 1;
TcpSession ssn;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
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;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_SSH;
f.proto = IPPROTO_TCP;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert ssh any any -> any any (msg:\"SSH\"; ssh.protoversion:2_compat; sid:1;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SSH,
STREAM_TOSERVER, sshbuf1, sshlen1);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SSH, STREAM_TOSERVER,
sshbuf2, sshlen2);
if (r != 0) {
printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SSH, STREAM_TOSERVER,
sshbuf3, sshlen3);
if (r != 0) {
printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SSH, STREAM_TOSERVER,
sshbuf4, sshlen4);
if (r != 0) {
printf("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
goto end;
}
FLOWLOCK_UNLOCK(&f);
SshState *ssh_state = f.alstate;
if (ssh_state == NULL) {
printf("no ssh state: ");
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("Error, 1.7 version is not 2 compat, so the sig should not match: ");
goto end;
}
result = 1;
end:
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
return result;
}
/**
* \test Check the ftpbounce match
* \brief This test tests the ftpbounce condition match, based on
* the ftp layer parser
*/
static int DetectFtpbounceTestALMatch03(void)
{
int result = 0;
uint8_t ftpbuf1[] = { 'P','O' };
uint32_t ftplen1 = sizeof(ftpbuf1);
uint8_t ftpbuf2[] = { 'R', 'T' };
uint32_t ftplen2 = sizeof(ftpbuf2);
uint8_t ftpbuf3[] = { ' ', '1',',','2',',' };
uint32_t ftplen3 = sizeof(ftpbuf3);
uint8_t ftpbuf4[] = "3,4,10,20\r\n";
uint32_t ftplen4 = sizeof(ftpbuf4);
TcpSession ssn;
Flow f;
Packet *p = SCMalloc(SIZE_OF_PACKET);
if (unlikely(p == NULL))
return 0;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&th_v, 0, sizeof(th_v));
memset(p, 0, SIZE_OF_PACKET);
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p->src.family = AF_INET;
p->dst.family = AF_INET;
p->src.addr_data32[0] = 0x04030201;
p->payload = NULL;
p->payload_len = 0;
p->proto = IPPROTO_TCP;
FLOW_INITIALIZE(&f);
f.src.address.address_un_data32[0]=0x04030201;
f.protoctx =(void *)&ssn;
f.proto = IPPROTO_TCP;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_FTP;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert tcp any any -> any any "
"(msg:\"Ftp Bounce\"; ftpbounce; sid:1;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v,(void *)de_ctx,(void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_FTP,
STREAM_TOSERVER, ftpbuf1, ftplen1);
if (r != 0) {
SCLogDebug("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
result = 0;
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_FTP, STREAM_TOSERVER,
ftpbuf2, ftplen2);
if (r != 0) {
SCLogDebug("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
result = 0;
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_FTP, STREAM_TOSERVER,
ftpbuf3, ftplen3);
if (r != 0) {
SCLogDebug("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
result = 0;
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_FTP, STREAM_TOSERVER,
ftpbuf4, ftplen4);
if (r != 0) {
SCLogDebug("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
result = 0;
FLOWLOCK_UNLOCK(&f);
goto end;
}
FLOWLOCK_UNLOCK(&f);
FtpState *ftp_state = f.alstate;
if (ftp_state == NULL) {
SCLogDebug("no ftp state: ");
result = 0;
goto end;
}
if (ftp_state->command != FTP_COMMAND_PORT) {
SCLogDebug("expected command port not detected");
result = 0;
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
/* It should not match */
if (!(PacketAlertCheck(p, 1))) {
result = 1;
} else {
SCLogDebug("It should not match here!");
}
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v,(void *)det_ctx);
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
SCFree(p);
return result;
}
static int DetectSslVersionTestDetect03(void)
{
DetectEngineCtx *de_ctx = NULL;
int result = 0;
Flow f;
uint8_t sslbuf1[] = { 0x16 };
uint32_t ssllen1 = sizeof(sslbuf1);
uint8_t sslbuf2[] = { 0x03 };
uint32_t ssllen2 = sizeof(sslbuf2);
uint8_t sslbuf3[] = { 0x01 };
uint32_t ssllen3 = sizeof(sslbuf3);
uint8_t sslbuf4[] = { 0x01, 0x00, 0x00, 0xad, 0x03, 0x02 };
uint32_t ssllen4 = sizeof(sslbuf4);
TcpSession ssn;
Packet *p = NULL;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
p->tcph->th_seq = htonl(1000);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
f.alproto = ALPROTO_TLS;
f.proto = p->proto;
StreamTcpInitConfig(TRUE);
StreamMsg *stream_msg = StreamMsgGetFromPool();
if (stream_msg == NULL) {
printf("no stream_msg: ");
goto end;
}
memcpy(stream_msg->data, sslbuf4, ssllen4);
stream_msg->data_len = ssllen4;
ssn.toserver_smsg_head = stream_msg;
ssn.toserver_smsg_tail = stream_msg;
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert tcp any any -> any any (msg:\"TLS\"; ssl_version:tls1.0; content:\"|01 00 00 AD|\"; sid:1;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SCMutexLock(&f.m);
int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, sslbuf1, ssllen1);
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, sslbuf2, ssllen2);
if (r != 0) {
printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, sslbuf3, ssllen3);
if (r != 0) {
printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, sslbuf4, ssllen4);
if (r != 0) {
printf("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
SCMutexUnlock(&f.m);
goto end;
}
SCMutexUnlock(&f.m);
SSLState *app_state = f.alstate;
if (app_state == NULL) {
printf("no ssl state: ");
goto end;
}
if (app_state->client_connp.content_type != 0x16) {
printf("expected content_type %" PRIu8 ", got %" PRIu8 ": ", 0x16, app_state->client_connp.content_type);
goto end;
}
if (app_state->client_connp.version != TLS_VERSION_10) {
printf("expected version %04" PRIu16 ", got %04" PRIu16 ": ", TLS_VERSION_10, app_state->client_connp.version);
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (!(PacketAlertCheck(p, 1))) {
printf("signature 1 didn't match while it should have: ");
goto end;
}
result = 1;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (de_ctx != NULL) {
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
}
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
static int DetectProtoTestSig01(void) {
Packet *p = NULL;
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx;
int result = 0;
Flow f;
memset(&f, 0, sizeof(Flow));
memset(&th_v, 0, sizeof(th_v));
FLOW_INITIALIZE(&f);
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flags |= PKT_HAS_FLOW;
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
s = de_ctx->sig_list = SigInit(de_ctx,"alert udp any any -> any any "
"(msg:\"Not tcp\"; flow:to_server; sid:1;)");
if (s == NULL)
goto end;
s = s->next = SigInit(de_ctx,"alert ip any any -> any any "
"(msg:\"IP\"; flow:to_server; sid:2;)");
if (s == NULL)
goto end;
s = s->next = SigInit(de_ctx,"alert tcp any any -> any any "
"(msg:\"TCP\"; flow:to_server; sid:3;)");
if (s == NULL)
goto end;
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 alerted, but should not have: ");
goto cleanup;
} else if (PacketAlertCheck(p, 2) == 0) {
printf("sid 2 did not alert, but should have: ");
goto cleanup;
} else if (PacketAlertCheck(p, 3) == 0) {
printf("sid 3 did not alert, but should have: ");
goto cleanup;
}
result = 1;
cleanup:
FLOW_DESTROY(&f);
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
UTHFreePackets(&p, 1);
end:
return result;
}
/**
*\test Test that the http_response_line content matches against a http request
* which holds the content.
*/
static int DetectHttpResponseLineTest02(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: This is dummy message body\r\n"
"Content-Type: text/html\r\n"
"\r\n";
uint32_t http_len = sizeof(http_buf) - 1;
uint8_t http_buf2[] =
"HTTP/1.0 200 OK\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 7\r\n"
"\r\n"
"message";
uint32_t http_len2 = sizeof(http_buf2) - 1;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
FAIL_IF_NULL(alp_tctx);
memset(&th_v, 0, sizeof(th_v));
memset(&f, 0, sizeof(f));
memset(&ssn, 0, sizeof(ssn));
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
FAIL_IF_NULL(p);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.proto = IPPROTO_TCP;
f.flags |= FLOW_IPV4;
p->flow = &f;
p->flowflags |= (FLOW_PKT_TOSERVER|FLOW_PKT_ESTABLISHED);
p->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any "
"(http_response_line; content:\"HTTP/1.0 200 OK\"; "
"sid:1;)");
FAIL_IF_NULL(de_ctx->sig_list);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
int r = AppLayerParserParse(&th_v, alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, http_buf, http_len);
FAIL_IF(r != 0);
http_state = f.alstate;
FAIL_IF_NULL(http_state);
r = AppLayerParserParse(&th_v, alp_tctx, &f, ALPROTO_HTTP, STREAM_TOCLIENT, http_buf2, http_len2);
FAIL_IF(r != 0);
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(PacketAlertCheck(p, 1));
p->flowflags = (FLOW_PKT_TOCLIENT|FLOW_PKT_ESTABLISHED);
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(!(PacketAlertCheck(p, 1)));
AppLayerParserThreadCtxFree(alp_tctx);
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
PASS;
}
/** \test simple google.com query matching (TCP splicing) */
static int DetectDnsQueryTest05(void)
{
/* google.com in 2 chunks (buf1 and buf2) */
uint8_t buf1[] = { 0x00, 28, /* len 28 */
0x10, 0x32, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, };
uint8_t buf2[] = { 0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C,
0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00,
0x00, 0x10, 0x00, 0x01, };
uint8_t buf3[] = { 0x00, 44, /* len 44 */
0x10, 0x32, /* tx id */
0x81, 0x80, /* flags: resp, recursion desired, recusion available */
0x00, 0x01, /* 1 query */
0x00, 0x01, /* 1 answer */
0x00, 0x00, 0x00, 0x00, /* no auth rr, additional rr */
/* query record */
0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C, /* name */
0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00, /* name cont */
0x00, 0x01, 0x00, 0x01, /* type a, class in */
/* answer */
0xc0, 0x0c, /* ref to name in query above */
0x00, 0x01, 0x00, 0x01, /* type a, class in */
0x00, 0x01, 0x40, 0xef, /* ttl */
0x00, 0x04, /* data len */
0x01, 0x02, 0x03, 0x04 }; /* addr */
/* google.net */
uint8_t buf4[] = { 0x00, 28, /* len 28 */
0x11, 0x33, 0x01, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x67, 0x6F, 0x6F, 0x67, 0x6C,
0x65, 0x03, 0x6E, 0x65, 0x74, 0x00,
0x00, 0x10, 0x00, 0x01, };
Flow f;
RSDNSState *dns_state = NULL;
Packet *p1 = NULL, *p2 = NULL, *p3 = NULL, *p4 = NULL;
Signature *s = NULL;
ThreadVars tv;
DetectEngineThreadCtx *det_ctx = NULL;
TcpSession ssn;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&tv, 0, sizeof(ThreadVars));
memset(&f, 0, sizeof(Flow));
memset(&ssn, 0, sizeof(TcpSession));
p1 = UTHBuildPacketReal(buf1, sizeof(buf1), IPPROTO_TCP,
"192.168.1.5", "192.168.1.1",
41424, 53);
p2 = UTHBuildPacketReal(buf2, sizeof(buf2), IPPROTO_TCP,
"192.168.1.5", "192.168.1.1",
41424, 53);
p3 = UTHBuildPacketReal(buf3, sizeof(buf3), IPPROTO_TCP,
"192.168.1.5", "192.168.1.1",
41424, 53);
p4 = UTHBuildPacketReal(buf4, sizeof(buf4), IPPROTO_TCP,
"192.168.1.5", "192.168.1.1",
41424, 53);
FLOW_INITIALIZE(&f);
f.protoctx = (void *)&ssn;
f.flags |= FLOW_IPV4;
f.proto = IPPROTO_TCP;
f.protomap = FlowGetProtoMapping(f.proto);
f.alproto = ALPROTO_DNS;
p1->flow = &f;
p1->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
p1->flowflags |= FLOW_PKT_TOSERVER|FLOW_PKT_ESTABLISHED;
p2->flow = &f;
p2->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
p2->flowflags |= FLOW_PKT_TOSERVER|FLOW_PKT_ESTABLISHED;
p3->flow = &f;
p3->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
p3->flowflags |= FLOW_PKT_TOCLIENT|FLOW_PKT_ESTABLISHED;
p4->flow = &f;
p4->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
p4->flowflags |= FLOW_PKT_TOSERVER|FLOW_PKT_ESTABLISHED;
StreamTcpInitConfig(TRUE);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->mpm_matcher = mpm_default_matcher;
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test dns_query option\"; "
"dns_query; content:\"google.com\"; nocase; sid:1;)");
FAIL_IF_NULL(s);
s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any "
"(msg:\"Test dns_query option\"; "
"dns_query; content:\"google.net\"; nocase; sid:2;)");
FAIL_IF_NULL(s);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DNS,
STREAM_TOSERVER, buf1, sizeof(buf1));
if (r != 0) {
printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
FAIL;
}
FLOWLOCK_UNLOCK(&f);
dns_state = f.alstate;
FAIL_IF_NULL(dns_state);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p1);
if (PacketAlertCheck(p1, 1)) {
printf("(p1) sig 1 alerted, but it should not have: ");
FAIL;
}
if (PacketAlertCheck(p1, 2)) {
printf("(p1) sig 2 did alert, but it should not have: ");
FAIL;
}
FLOWLOCK_WRLOCK(&f);
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DNS, STREAM_TOSERVER,
buf2, sizeof(buf2));
if (r != 0) {
printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
FAIL;
}
FLOWLOCK_UNLOCK(&f);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p2);
if (!(PacketAlertCheck(p2, 1))) {
printf("sig 1 didn't alert, but it should have: ");
FAIL;
}
if (PacketAlertCheck(p2, 2)) {
printf("(p2) sig 2 did alert, but it should not have: ");
FAIL;
}
FLOWLOCK_WRLOCK(&f);
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DNS, STREAM_TOCLIENT,
buf3, sizeof(buf3));
if (r != 0) {
printf("toclient chunk 1 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
FAIL;
}
FLOWLOCK_UNLOCK(&f);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p3);
if (PacketAlertCheck(p3, 1)) {
printf("sig 1 did alert, but it should not have: ");
FAIL;
}
if (PacketAlertCheck(p3, 2)) {
printf("(p3) sig 2 did alert, but it should not have: ");
FAIL;
}
FLOWLOCK_WRLOCK(&f);
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DNS, STREAM_TOSERVER,
buf4, sizeof(buf4));
if (r != 0) {
printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
FLOWLOCK_UNLOCK(&f);
FAIL;
}
FLOWLOCK_UNLOCK(&f);
/* do detect */
SigMatchSignatures(&tv, de_ctx, det_ctx, p4);
if (PacketAlertCheck(p4, 1)) {
printf("(p4) sig 1 did alert, but it should not have: ");
FAIL;
}
if (!(PacketAlertCheck(p4, 2))) {
printf("sig 1 didn't alert, but it should have: ");
FAIL;
}
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (det_ctx != NULL)
DetectEngineThreadCtxDeinit(&tv, det_ctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePacket(p1);
UTHFreePacket(p2);
UTHFreePacket(p3);
UTHFreePacket(p4);
PASS;
}
static int DetectEngineSMTPFiledataTest03(void)
{
uint8_t mimemsg1[] = {0x65, 0x76,};
uint8_t mimemsg2[] = {0x69, 0x6C,};
uint32_t mimemsg1_len = sizeof(mimemsg1) - 1;
uint32_t mimemsg2_len = sizeof(mimemsg2) - 1;
TcpSession ssn;
Packet *p;
ThreadVars th_v;
DetectEngineCtx *de_ctx = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
SMTPState *smtp_state = NULL;
Flow f;
int result = 1;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
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.flags |= FLOW_IPV4;
f.alstate = SMTPStateAlloc();
MimeDecParseState *state = MimeDecInitParser(&f, NULL);
((MimeDecEntity *)state->stack->top->data)->ctnt_flags = CTNT_IS_ATTACHMENT;
state->body_begin = 1;
if (SMTPProcessDataChunk((uint8_t *)mimemsg1, sizeof(mimemsg1), state) != 0)
goto end;
if (SMTPProcessDataChunk((uint8_t *)mimemsg2, sizeof(mimemsg2), state) != 0)
goto end;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_SMTP;
StreamTcpInitConfig(TRUE);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL)
goto end;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, "alert smtp any any -> any any "
"(msg:\"file_data smtp test\"; "
"file_data; content:\"evil\"; sid:1;)");
if (de_ctx->sig_list == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
FLOWLOCK_WRLOCK(&f);
int r = 0;
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SMTP,
STREAM_TOSERVER, mimemsg1, mimemsg1_len);
if (r != 0) {
printf("AppLayerParse for smtp failed. Returned %d", r);
FLOWLOCK_UNLOCK(&f);
goto end;
}
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_SMTP,
STREAM_TOSERVER, mimemsg2, mimemsg2_len);
if (r != 0) {
printf("AppLayerParse for smtp failed. Returned %d", r);
FLOWLOCK_UNLOCK(&f);
goto end;
}
FLOWLOCK_UNLOCK(&f);
smtp_state = f.alstate;
if (smtp_state == NULL) {
printf("no smtp state: ");
goto end;
}
/* do detect */
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
if (PacketAlertCheck(p, 1)) {
printf("sid 1 matched but shouldn't have\n");
goto end;
}
result = 0;
end:
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
SigCleanSignatures(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result == 0;
}
/**
* \test Test that the http_method content matches against a http request
* which holds the content.
*/
static int DetectEngineHttpMethodTest10(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[] =
"CONNECT /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.flags |= FLOW_IPV4;
p->flow = &f;
p->flowflags |= FLOW_PKT_TOSERVER;
p->flowflags |= FLOW_PKT_ESTABLISHED;
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
f.alproto = ALPROTO_HTTP;
StreamTcpInitConfig(TRUE);
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:\"CO\"; http_method; "
"content:\"EC\"; within:4; http_method; "
"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(NULL, &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.alstate;
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);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePackets(&p, 1);
return result;
}
static int DetectTemplateBufferTest(void)
{
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
DetectEngineThreadCtx *det_ctx = NULL;
DetectEngineCtx *de_ctx = NULL;
Flow f;
Packet *p;
TcpSession tcp;
ThreadVars tv;
Signature *s;
int result = 0;
uint8_t request[] = "Hello World!";
/* Setup flow. */
memset(&f, 0, sizeof(Flow));
memset(&tcp, 0, sizeof(TcpSession));
memset(&tv, 0, sizeof(ThreadVars));
p = UTHBuildPacket(request, sizeof(request), IPPROTO_TCP);
FLOW_INITIALIZE(&f);
f.alproto = ALPROTO_TEMPLATE;
f.protoctx = (void *)&tcp;
f.proto = IPPROTO_TCP;
f.flags |= FLOW_IPV4;
p->flow = &f;
p->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
p->flowflags |= FLOW_PKT_TOSERVER | FLOW_PKT_ESTABLISHED;
StreamTcpInitConfig(TRUE);
de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
/* This rule should match. */
s = DetectEngineAppendSig(de_ctx,
"alert tcp any any -> any any ("
"msg:\"TEMPLATE Test Rule\"; "
"template_buffer; content:\"World!\"; "
"sid:1; rev:1;)");
if (s == NULL) {
goto end;
}
/* This rule should not match. */
s = DetectEngineAppendSig(de_ctx,
"alert tcp any any -> any any ("
"msg:\"TEMPLATE Test Rule\"; "
"template_buffer; content:\"W0rld!\"; "
"sid:2; rev:1;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&tv, (void *)de_ctx, (void *)&det_ctx);
SCMutexLock(&f.m);
AppLayerParserParse(alp_tctx, &f, ALPROTO_TEMPLATE, STREAM_TOSERVER,
request, sizeof(request));
SCMutexUnlock(&f.m);
/* Check that we have app-layer state. */
if (f.alstate == NULL) {
goto end;
}
SigMatchSignatures(&tv, de_ctx, det_ctx, p);
if (!PacketAlertCheck(p, 1)) {
goto end;
}
if (PacketAlertCheck(p, 2)) {
goto end;
}
result = 1;
end:
/* Cleanup. */
if (alp_tctx != NULL)
AppLayerParserThreadCtxFree(alp_tctx);
if (det_ctx != NULL)
DetectEngineThreadCtxDeinit(&tv, det_ctx);
if (de_ctx != NULL)
SigGroupCleanup(de_ctx);
if (de_ctx != NULL)
DetectEngineCtxFree(de_ctx);
StreamTcpFreeConfig(TRUE);
FLOW_DESTROY(&f);
UTHFreePacket(p);
return result;
}
