C++ DetectEngineCtxFree函数代码示例

/**
 * \test Test packet Matches
 * \param raw_eth_pkt pointer to the ethernet packet
 * \param pktsize size of the packet
 * \param sig pointer to the signature to test
 * \param sid sid number of the signature
 * \retval return 1 if match
 * \retval return 0 if not
 */
int DetectReplaceLongPatternMatchTest(uint8_t *raw_eth_pkt, uint16_t pktsize, char *sig,
                                      uint32_t sid, uint8_t *pp, uint16_t *len)
{
    int result = 0;

    Packet *p = NULL;
    p = SCMalloc(SIZE_OF_PACKET);
    if (unlikely(p == NULL))
        return 0;

    DecodeThreadVars dtv;

    ThreadVars th_v;
    DetectEngineThreadCtx *det_ctx = NULL;

    if (pp == NULL) {
        SCLogDebug("replace: looks like a second run");
    }

    memset(p, 0, SIZE_OF_PACKET);
    p->pkt = (uint8_t *)(p + 1);
    PacketCopyData(p, raw_eth_pkt, pktsize);
    memset(&dtv, 0, sizeof(DecodeThreadVars));
    memset(&th_v, 0, sizeof(th_v));


    FlowInitConfig(FLOW_QUIET);
    DecodeEthernet(&th_v, &dtv, p, GET_PKT_DATA(p), pktsize, NULL);

    DetectEngineCtx *de_ctx = DetectEngineCtxInit();
    if (de_ctx == NULL) {
        goto end;
    }
    de_ctx->flags |= DE_QUIET;

    de_ctx->sig_list = SigInit(de_ctx, sig);
    if (de_ctx->sig_list == NULL) {
        goto end;
    }
    de_ctx->sig_list->next = NULL;

    if (de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->type == DETECT_CONTENT) {
        DetectContentData *co = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
        if (co->flags & DETECT_CONTENT_RELATIVE_NEXT) {
            printf("relative next flag set on final match which is content: ");
            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, sid) != 1) {
        SCLogDebug("replace: no alert on sig %d", sid);
        goto end;
    }

    if (pp) {
        memcpy(pp, GET_PKT_DATA(p), GET_PKT_LEN(p));
        *len = pktsize;
        SCLogDebug("replace: copying %d on %p", *len, pp);
    }


    result = 1;
end:
    if (de_ctx != NULL)
    {
        SigGroupCleanup(de_ctx);
        SigCleanSignatures(de_ctx);
        if (det_ctx != NULL)
            DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
        DetectEngineCtxFree(de_ctx);
    }
    FlowShutdown();
    SCFree(p);


    return result;
}

/** \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;

    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);

    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);

    SCMutexLock(&f.m);
    int r = AppLayerParse(NULL, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
    if (r != 0) {
        SCLogDebug("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
        SCMutexUnlock(&f.m);
        goto end;
    }
    SCMutexUnlock(&f.m);

    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 (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);
//.........这里部分代码省略.........

static int DetectSslVersionTestDetect02(void)
{
    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);

    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();
    FAIL_IF_NULL(de_ctx);

    de_ctx->flags |= DE_QUIET;

    s = de_ctx->sig_list = SigInit(de_ctx,"alert tls any any -> any any (msg:\"TLS\"; ssl_version:tls1.0; sid:1;)");
    FAIL_IF_NULL(s);

    SigGroupBuild(de_ctx);
    DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);

    FLOWLOCK_WRLOCK(&f);
    int r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_TLS,
                                STREAM_TOSERVER, sslbuf1, ssllen1);
    FAIL_IF(r != 0);

    r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER,
                            sslbuf2, ssllen2);
    FAIL_IF(r != 0);

    r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER,
                            sslbuf3, ssllen3);
    FAIL_IF(r != 0);

    r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER,
                            sslbuf4, ssllen4);
    FAIL_IF(r != 0);
    FLOWLOCK_UNLOCK(&f);

    SSLState *app_state = f.alstate;
    FAIL_IF_NULL(app_state);

    FAIL_IF(app_state->client_connp.content_type != 0x16);

    FAIL_IF(app_state->client_connp.version != TLS_VERSION_10);

    /* do detect */
    SigMatchSignatures(&th_v, de_ctx, det_ctx, p);

    FAIL_IF_NOT(PacketAlertCheck(p, 1));

    AppLayerParserThreadCtxFree(alp_tctx);
    DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
    DetectEngineCtxFree(de_ctx);
    StreamTcpFreeConfig(TRUE);
    FLOW_DESTROY(&f);
    UTHFreePackets(&p, 1);

    PASS;
}

/** \test Check the signature working to alert when http_cookie is not present */
static int DetectHttpCookieSigTest07(void)
{
    int result = 0;
    Flow f;
    uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\n"
        "Cookie: dummy\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 http any any -> any any (msg:"
                                   "\"HTTP cookie\"; content:!\"dummy\"; "
                                   "http_cookie; 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_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
    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)) {
        goto end;
    }

    result = 1;
end:
    if (alp_tctx != NULL)
        AppLayerParserThreadCtxFree(alp_tctx);
    if (det_ctx != NULL) {
        DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
    }
    if (de_ctx != NULL) {
        SigGroupCleanup(de_ctx);
        DetectEngineCtxFree(de_ctx);
    }

    StreamTcpFreeConfig(TRUE);
    UTHFreePackets(&p, 1);
    return result;
}

/**
 *\test Negative test that the negated http_header content matches against a
 *      http request which holds hold the content.
 */
static int DetectHttpHeaderTest12(void)
{
    TcpSession ssn;
    Packet *p = NULL;
    ThreadVars th_v;
    DetectEngineCtx *de_ctx = NULL;
    DetectEngineThreadCtx *det_ctx = NULL;
    HtpState *http_state = NULL;
    Flow f;
    uint8_t http_buf[] =
        "GET /index.html HTTP/1.0\r\n"
        "Host: www.openinfosecfoundation.org\r\n"
        "User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7\r\n"
        "Content-Type: text/html\r\n"
        "Content-Length: 26\r\n"
        "\r\n"
        "This is dummy message body\r\n";
    uint32_t http_len = sizeof(http_buf) - 1;
    int result = 0;

    memset(&th_v, 0, sizeof(th_v));
    memset(&f, 0, sizeof(f));
    memset(&ssn, 0, sizeof(ssn));

    p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);

    FLOW_INITIALIZE(&f);
    f.protoctx = (void *)&ssn;
    f.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:!\"User-Agent: Mozilla/5.0 \"; http_header; "
                               "sid:1;)");
    if (de_ctx->sig_list == NULL)
        goto end;

    SigGroupBuild(de_ctx);
    DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);

    int r = AppLayerParse(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;
}

/**
 * \test DetectFragOffsetMatchTest01 is a test for checking the working of
 *       fragoffset keyword by creating 2 rules and matching a crafted packet
 *       against them. Only the first one shall trigger.
 */
int DetectFragOffsetMatchTest01 (void)
{
    int result = 0;
    Packet *p = SCMalloc(SIZE_OF_PACKET);
    if (unlikely(p == NULL))
        return 0;
    Signature *s = NULL;
    DecodeThreadVars dtv;
    ThreadVars th_v;
    DetectEngineThreadCtx *det_ctx = NULL;
    IPV4Hdr ip4h;

    memset(p, 0, SIZE_OF_PACKET);
    memset(&ip4h, 0, sizeof(IPV4Hdr));
    memset(&dtv, 0, sizeof(DecodeThreadVars));
    memset(&th_v, 0, sizeof(ThreadVars));

    FlowInitConfig(FLOW_QUIET);

    p->src.family = AF_INET;
    p->dst.family = AF_INET;
    p->src.addr_data32[0] = 0x01020304;
    p->dst.addr_data32[0] = 0x04030201;

    ip4h.s_ip_src.s_addr = p->src.addr_data32[0];
    ip4h.s_ip_dst.s_addr = p->dst.addr_data32[0];
    ip4h.ip_off = 0x2222;
    p->ip4h = &ip4h;

    DetectEngineCtx *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 (fragoffset:546; sid:1;)");
    if (s == NULL) {
        goto end;
    }

    s = s->next = SigInit(de_ctx, "alert ip any any -> any any (fragoffset:5000; sid:2;)");
    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) == 0) {
        printf("sid 1 did not alert, but should have: ");
        goto cleanup;
    } else if (PacketAlertCheck(p, 2)) {
        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);

    FlowShutdown();
end:
    SCFree(p);
    return result;

}

/**
 * \test DetectrotoTestSetup02 is a test for a icmpv4 and icmpv6
 *       protocol setting up in signature.
 */
static int DetectProtoTestSetup02(void)
{
    DetectProto dp;
    Signature *sig_icmpv4 = NULL;
    Signature *sig_icmpv6 = NULL;
    Signature *sig_icmp = NULL;
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;
    int i;

    memset(&dp, 0, sizeof(dp));

    if (DetectProtoInitTest(&de_ctx, &sig_icmpv4, &dp, "icmpv4") == 0) {
        printf("failure - imcpv4.\n");
        goto end;
    }

    if (DetectProtoInitTest(&de_ctx, &sig_icmpv6, &dp, "icmpv6") == 0) {
        printf("failure - imcpv6.\n");
        goto end;
    }

    if (DetectProtoInitTest(&de_ctx, &sig_icmp, &dp, "icmp") == 0) {
        printf("failure - imcp.\n");
        goto end;
    }

    for (i = 0; i < 256 / 8; i++) {
        if (i == IPPROTO_ICMP) {
            if (!(sig_icmpv4->proto.proto[i / 8] & (1 << (i % 8)))) {
                printf("failed in sig matching - icmpv4 - icmpv4.\n");
                goto end;
            }
            continue;
        }
        if (sig_icmpv4->proto.proto[i / 8] & (1 << (i % 8))) {
            printf("failed in sig matching - icmpv4 - others.\n");
            goto end;
        }
    }

    for (i = 0; i < 256 / 8; i++) {
        if (i == IPPROTO_ICMPV6) {
            if (!(sig_icmpv6->proto.proto[i / 8] & (1 << (i % 8)))) {
                printf("failed in sig matching - icmpv6 - icmpv6.\n");
                goto end;
            }
            continue;
        }
        if (sig_icmpv6->proto.proto[i / 8] & (1 << (i % 8))) {
            printf("failed in sig matching - icmpv6 - others.\n");
            goto end;
        }
    }

    for (i = 0; i < 256 / 8; i++) {
        if (i == IPPROTO_ICMP || i == IPPROTO_ICMPV6) {
            if (!(sig_icmp->proto.proto[i / 8] & (1 << (i % 8)))) {
                printf("failed in sig matching - icmp - icmp.\n");
                goto end;
            }
            continue;
        }
        if (sig_icmpv6->proto.proto[i / 8] & (1 << (i % 8))) {
            printf("failed in sig matching - icmp - others.\n");
            goto end;
        }
    }

    result = 1;

 end:
    SigGroupCleanup(de_ctx);
    SigCleanSignatures(de_ctx);
    DetectEngineCtxFree(de_ctx);
    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;
}

//.........这里部分代码省略.........

    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;
}

//.........这里部分代码省略.........

    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 DetectTtlTestSig1(void)
{

    Packet *p = PacketGetFromAlloc();
    if (unlikely(p == NULL))
        return 0;
    Signature *s = NULL;
    ThreadVars th_v;
    DetectEngineThreadCtx *det_ctx;
    int result = 0;
    IPV4Hdr ip4h;

    memset(&th_v, 0, sizeof(th_v));
    memset(&ip4h, 0, sizeof(ip4h));

    p->src.family = AF_INET;
    p->dst.family = AF_INET;
    p->proto = IPPROTO_TCP;
    ip4h.ip_ttl = 15;
    p->ip4h = &ip4h;

    DetectEngineCtx *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:\"with in ttl limit\"; ttl: >16; sid:1;)");
    if (s == NULL) {
        goto end;
    }

    s = s->next = SigInit(de_ctx,"alert ip any any -> any any (msg:\"Less than 17\"; ttl: <17; sid:2;)");
    if (s == NULL) {
        goto end;
    }

    s = s->next = SigInit(de_ctx,"alert ip any any -> any any (msg:\"Greater than 5\"; ttl:15; sid:3;)");
    if (s == NULL) {
        goto end;
    }

    s = s->next = SigInit(de_ctx,"alert ip any any -> any any (msg:\"Equals tcp\"; ttl: 1-30; sid:4;)");
    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;
    } else if (PacketAlertCheck(p, 4) == 0) {
        printf("sid 4 did not alert, but should have: ");
        goto cleanup;
    }

    result = 1;

cleanup:
    SigGroupCleanup(de_ctx);
    SigCleanSignatures(de_ctx);

    DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
    DetectEngineCtxFree(de_ctx);

end:
    SCFree(p);
    return result;
}

/**
 * \test Used to check the working of recursion_limit counter.
 */
static int PayloadTestSig13(void)
{
    uint8_t *buf = (uint8_t *)"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
    uint16_t buflen = strlen((char *)buf);
    Packet *p = UTHBuildPacket( buf, buflen, IPPROTO_TCP);
    int result = 0;
    uint16_t mpm_type = MPM_B2G;

    char sig[] = "alert tcp any any -> any any (msg:\"dummy\"; "
        "content:\"aa\"; content:\"aa\"; distance:0; content:\"aa\"; distance:0; "
        "byte_test:1,>,200,0,relative; sid:1;)";

    struct timeval tv_start, tv_end, tv_diff;

    gettimeofday(&tv_start, NULL);

    do {
        DecodeThreadVars dtv;
        ThreadVars th_v;
        DetectEngineThreadCtx *det_ctx = NULL;

        memset(&dtv, 0, sizeof(DecodeThreadVars));
        memset(&th_v, 0, sizeof(th_v));

        DetectEngineCtx *de_ctx = DetectEngineCtxInit();
        if (de_ctx == NULL) {
            printf("de_ctx == NULL: ");
            goto end;
        }
        de_ctx->inspection_recursion_limit = 3000;

        de_ctx->flags |= DE_QUIET;
        de_ctx->mpm_matcher = mpm_type;

        de_ctx->sig_list = SigInit(de_ctx, sig);
        if (de_ctx->sig_list == NULL) {
            printf("signature == 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, de_ctx->sig_list->id) != 1) {
            goto end;
        }

        result = 1;
    end:
        SigGroupCleanup(de_ctx);
        SigCleanSignatures(de_ctx);

        if (det_ctx != NULL)
            DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);

        if (de_ctx != NULL)
            DetectEngineCtxFree(de_ctx);
    } while (0);

    gettimeofday(&tv_end, NULL);

    tv_diff.tv_sec = tv_end.tv_sec - tv_start.tv_sec;
    tv_diff.tv_usec = tv_end.tv_usec - tv_start.tv_usec;

    printf("%ld.%06ld\n", tv_diff.tv_sec, (long int)tv_diff.tv_usec);

    result = 1;

    if (p != NULL)
        UTHFreePacket(p);
    return result;
}

/** \test Check a signature against an unparsable request */
static int DetectHttpMethodSigTest03(void)
{
    int result = 0;
    Flow f;
    uint8_t httpbuf1[] = " ";
    uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
    TcpSession ssn;
    Packet *p = NULL;
    Signature *s = NULL;
    ThreadVars th_v;
    DetectEngineThreadCtx *det_ctx;
    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) {
        SCLogDebug("Bad signature");
        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)) {
        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;
}

//.........这里部分代码省略.........
    p2 = UTHBuildPacketReal(server_hello, sizeof(server_hello), IPPROTO_TCP,
                            "192.168.1.1", "192.168.1.5", 443, 51251);
    p3 = UTHBuildPacketReal(certificate, sizeof(certificate), IPPROTO_TCP,
                            "192.168.1.1", "192.168.1.5", 443, 51251);

    FLOW_INITIALIZE(&f);
    f.flags |= FLOW_IPV4;
    f.proto = IPPROTO_TCP;
    f.protomap = FlowGetProtoMapping(f.proto);
    f.alproto = ALPROTO_TLS;

    p1->flow = &f;
    p1->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
    p1->flowflags |= FLOW_PKT_TOSERVER;
    p1->flowflags |= FLOW_PKT_ESTABLISHED;
    p1->pcap_cnt = 1;

    p2->flow = &f;
    p2->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
    p2->flowflags |= FLOW_PKT_TOCLIENT;
    p2->flowflags |= FLOW_PKT_ESTABLISHED;
    p2->pcap_cnt = 2;

    p3->flow = &f;
    p3->flags |= PKT_HAS_FLOW | PKT_STREAM_EST;
    p3->flowflags |= FLOW_PKT_TOCLIENT;
    p3->flowflags |= FLOW_PKT_ESTABLISHED;
    p3->pcap_cnt = 3;

    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 tls any any -> any any "
                              "(msg:\"Test tls_cert_issuer\"; "
                              "tls_cert_issuer; 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_TLS,
                                STREAM_TOSERVER, client_hello,
                                sizeof(client_hello));
    FLOWLOCK_UNLOCK(&f);

    FAIL_IF(r != 0);

    ssl_state = f.alstate;
    FAIL_IF_NULL(ssl_state);

    SigMatchSignatures(&tv, de_ctx, det_ctx, p1);

    FAIL_IF(PacketAlertCheck(p1, 1));

    FLOWLOCK_WRLOCK(&f);
    r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_TLS, STREAM_TOCLIENT,
                            server_hello, sizeof(server_hello));
    FLOWLOCK_UNLOCK(&f);

    FAIL_IF(r != 0);

    SigMatchSignatures(&tv, de_ctx, det_ctx, p2);

    FAIL_IF(PacketAlertCheck(p2, 1));

    FLOWLOCK_WRLOCK(&f);
    r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_TLS, STREAM_TOCLIENT,
                            certificate, sizeof(certificate));
    FLOWLOCK_UNLOCK(&f);

    FAIL_IF(r != 0);

    SigMatchSignatures(&tv, de_ctx, det_ctx, p3);

    FAIL_IF_NOT(PacketAlertCheck(p3, 1));

    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);

    PASS;
}

//.........这里部分代码省略.........
    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;
}