/**
* \brief UTHBuildPacketSrcDstTest02 wrapper to check packets for unittests
*/
int UTHBuildPacketSrcDstTest02(void)
{
uint8_t payload[] = "Payload";
Packet *p = UTHBuildPacketSrcDst(payload, sizeof(payload), IPPROTO_UDP,
"192.168.1.5", "192.168.1.1");
int ret = CheckUTHTestPacket(p, IPPROTO_UDP);
UTHFreePacket(p);
return ret;
}
/**
* \test ICMP(?) sig grouping bug.
*/
static int SigGroupHeadTest10(void)
{
int result = 0;
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
Signature *s = NULL;
Packet *p = NULL;
DetectEngineThreadCtx *det_ctx = NULL;
ThreadVars th_v;
memset(&th_v, 0, sizeof(ThreadVars));
p = UTHBuildPacketSrcDst(NULL, 0, IPPROTO_ICMP, "192.168.1.1", "1.2.3.4");
p->icmpv4h->type = 5;
p->icmpv4h->code = 1;
/* originally ip's were
p.src.addr_data32[0] = 0xe08102d3;
p.dst.addr_data32[0] = 0x3001a8c0;
*/
if (de_ctx == NULL)
return 0;
s = DetectEngineAppendSig(de_ctx, "alert icmp 192.168.0.0/16 any -> any any (icode:>1; itype:11; sid:1; rev:1;)");
if (s == NULL) {
goto end;
}
s = DetectEngineAppendSig(de_ctx, "alert icmp any any -> 192.168.0.0/16 any (icode:1; itype:5; sid:2; rev:1;)");
if (s == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
AddressDebugPrint(&p->dst);
SigGroupHead *sgh = SigMatchSignaturesGetSgh(de_ctx, det_ctx, p);
if (sgh == NULL) {
goto end;
}
result = 1;
end:
SigCleanSignatures(de_ctx);
DetectEngineCtxFree(de_ctx);
UTHFreePackets(&p, 1);
return result;
}
/**
* \internal
* \brief This test tests geoip success and failure.
*/
static int GeoipMatchTest(char *rule, char *srcip, char *dstip)
{
uint8_t *buf = (uint8_t *) "GET / HTTP/1.0\r\n\r\n";
uint16_t buflen = strlen((char *)buf);
Packet *p1 = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
p1 = UTHBuildPacketSrcDst(buf, buflen, IPPROTO_TCP, srcip, dstip);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx, rule);
if (de_ctx->sig_list == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
result = 2;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p1);
if (PacketAlertCheck(p1, 1) == 0) {
goto cleanup;
}
result = 1;
cleanup:
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
end:
return result;
}
/**
* \internal
* \brief This test tests sameip success and failure.
*/
static int DetectSameipSigTest01Real(int mpm_type)
{
uint8_t *buf = (uint8_t *)
"GET / HTTP/1.0\r\n"
"\r\n";
uint16_t buflen = strlen((char *)buf);
Packet *p1 = NULL;
Packet *p2 = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx;
int result = 0;
memset(&th_v, 0, sizeof(th_v));
/* First packet has same IPs */
p1 = UTHBuildPacketSrcDst(buf, buflen, IPPROTO_TCP, "1.2.3.4", "1.2.3.4");
/* Second packet does not have same IPs */
p2 = UTHBuildPacketSrcDst(buf, buflen, IPPROTO_TCP, "1.2.3.4", "4.3.2.1");
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
if (de_ctx == NULL) {
goto end;
}
de_ctx->mpm_matcher = mpm_type;
de_ctx->flags |= DE_QUIET;
de_ctx->sig_list = SigInit(de_ctx,
"alert tcp any any -> any any "
"(msg:\"Testing sameip\"; sameip; sid:1;)");
if (de_ctx->sig_list == NULL) {
goto end;
}
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SigMatchSignatures(&th_v, de_ctx, det_ctx, p1);
if (PacketAlertCheck(p1, 1) == 0) {
printf("sid 2 did not alert, but should have: ");
goto cleanup;
}
SigMatchSignatures(&th_v, de_ctx, det_ctx, p2);
if (PacketAlertCheck(p2, 1) != 0) {
printf("sid 2 alerted, but should not have: ");
goto cleanup;
}
result = 1;
cleanup:
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
end:
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;
}