/* Copyright (C) 2007-2010 Open Information Security Foundation
 *
 * You can copy, redistribute or modify this Program under the terms of
 * the GNU General Public License version 2 as published by the Free
 * Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

/**
 * \file
 *
 * \author Gurvinder Singh <gurvindersinghdahiya@gmail.com>
 *
 * Implements the http_cookie keyword
 */

#include "suricata-common.h"
#include "threads.h"
#include "debug.h"
#include "decode.h"
#include "detect.h"

#include "detect-parse.h"
#include "detect-engine.h"
#include "detect-engine-mpm.h"
#include "detect-content.h"
#include "detect-pcre.h"

#include "flow.h"
#include "flow-var.h"
#include "flow-util.h"

#include "util-debug.h"
#include "util-error.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "util-spm.h"
#include "util-print.h"

#include "app-layer.h"

#include <htp/htp.h>
#include "app-layer-htp.h"
#include "detect-http-cookie.h"
#include "stream-tcp.h"

static int DetectHttpCookieSetup (DetectEngineCtx *, Signature *, char *);
void DetectHttpCookieRegisterTests(void);
void DetectHttpCookieFree(void *);

/**
 * \brief Registration function for keyword: http_cookie
 */
void DetectHttpCookieRegister (void) {
    sigmatch_table[DETECT_AL_HTTP_COOKIE].name = "http_cookie";
    sigmatch_table[DETECT_AL_HTTP_COOKIE].Match = NULL;
    sigmatch_table[DETECT_AL_HTTP_COOKIE].AppLayerMatch = NULL;
    sigmatch_table[DETECT_AL_HTTP_COOKIE].alproto = ALPROTO_HTTP;
    sigmatch_table[DETECT_AL_HTTP_COOKIE].Setup = DetectHttpCookieSetup;
    sigmatch_table[DETECT_AL_HTTP_COOKIE].Free  = DetectHttpCookieFree;
    sigmatch_table[DETECT_AL_HTTP_COOKIE].RegisterTests = DetectHttpCookieRegisterTests;

    sigmatch_table[DETECT_AL_HTTP_COOKIE].flags |= SIGMATCH_PAYLOAD;
}

/**
 * \brief this function clears the memory of http_cookie modifier keyword
 *
 * \param ptr   Pointer to the Detection Cookie data
 */
void DetectHttpCookieFree(void *ptr)
{
    DetectContentData *hcd = (DetectContentData *)ptr;
    if (hcd == NULL)
        return;
    if (hcd->content != NULL)
        SCFree(hcd->content);
    SCFree(hcd);
}

/**
 * \brief this function setups the http_cookie modifier keyword used in the rule
 *
 * \param de_ctx   Pointer to the Detection Engine Context
 * \param s        Pointer to the Signature to which the current keyword belongs
 * \param str      Should hold an empty string always
 *
 * \retval  0 On success
 * \retval -1 On failure
 */

static int DetectHttpCookieSetup (DetectEngineCtx *de_ctx, Signature *s, char *str)
{
    DetectContentData *cd = NULL;
    SigMatch *sm = NULL;

    if (str != NULL && strcmp(str, "") != 0) {
        SCLogError(SC_ERR_INVALID_ARGUMENT, "http_cookie shouldn't be supplied "
                   "with an argument");
        return -1;
    }

    if (s->sm_lists_tail[DETECT_SM_LIST_PMATCH] == NULL) {
        SCLogError(SC_ERR_HTTP_COOKIE_NEEDS_PRECEEDING_CONTENT, "http_cookie "
                "found inside the rule, without any preceding content keywords");
        return -1;
    }

    sm = DetectContentGetLastPattern(s->sm_lists_tail[DETECT_SM_LIST_PMATCH]);
    if (sm == NULL) {
        SCLogWarning(SC_ERR_HTTP_COOKIE_NEEDS_PRECEEDING_CONTENT, "http_cookie "
                "found inside the rule, without a content context.  Please use a "
                "content keyword before using http_cookie");
        return -1;
    }

    cd = (DetectContentData *)sm->ctx;

    /* http_cookie should not be used with the rawbytes rule */
    if (cd->flags & DETECT_CONTENT_RAWBYTES) {
        SCLogError(SC_ERR_HTTP_COOKIE_INCOMPATIBLE_WITH_RAWBYTES, "http_cookie "
                "rule can not be used with the rawbytes rule keyword");
        return -1;
    }

    if (s->alproto != ALPROTO_UNKNOWN && s->alproto != ALPROTO_HTTP) {
        SCLogError(SC_ERR_CONFLICTING_RULE_KEYWORDS, "rule contains keywords"
                "that conflict with http_cookie");
        goto error;
    }

    if (cd->flags & DETECT_CONTENT_WITHIN || cd->flags & DETECT_CONTENT_DISTANCE) {
        SigMatch *pm =  SigMatchGetLastSMFromLists(s, 4,
                                                   DETECT_CONTENT, sm->prev,
                                                   DETECT_PCRE, sm->prev);
        if (pm != NULL) {
            /* pm is never NULL.  So no NULL check */
            if (pm->type == DETECT_CONTENT) {
                DetectContentData *tmp_cd = (DetectContentData *)pm->ctx;
                tmp_cd->flags &= ~DETECT_CONTENT_RELATIVE_NEXT;
            } else {
                DetectPcreData *tmp_pd = (DetectPcreData *)pm->ctx;
                tmp_pd->flags &= ~DETECT_PCRE_RELATIVE_NEXT;
            }
        } /* if (pm != NULL) */

        /* please note.  reassigning pm */
        pm = SigMatchGetLastSMFromLists(s, 4,
                                        DETECT_AL_HTTP_COOKIE,
                                        s->sm_lists_tail[DETECT_SM_LIST_HCDMATCH],
                                        DETECT_PCRE,
                                        s->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]);
        if (pm == NULL) {
            SCLogError(SC_ERR_HTTP_COOKIE_RELATIVE_MISSING, "http_cookie with "
                    "a distance or within requires preceeding http_cookie "
                    "content, but none was found");
            goto error;
        }
        if (pm->type == DETECT_PCRE) {
            DetectPcreData *tmp_pd = (DetectPcreData *)pm->ctx;
            tmp_pd->flags |= DETECT_PCRE_RELATIVE_NEXT;
        } else {
            DetectContentData *tmp_cd = (DetectContentData *)pm->ctx;
            tmp_cd->flags |= DETECT_CONTENT_RELATIVE_NEXT;
        }
    }
    cd->id = DetectPatternGetId(de_ctx->mpm_pattern_id_store, cd, DETECT_AL_HTTP_COOKIE);
    sm->type = DETECT_AL_HTTP_COOKIE;

    /* transfer the sm from the pmatch list to hmdmatch list */
    SigMatchTransferSigMatchAcrossLists(sm,
                                        &s->sm_lists[DETECT_SM_LIST_PMATCH],
                                        &s->sm_lists_tail[DETECT_SM_LIST_PMATCH],
                                        &s->sm_lists[DETECT_SM_LIST_HCDMATCH],
                                        &s->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]);

    /* flag the signature to indicate that we scan the app layer data */
    s->flags |= SIG_FLAG_APPLAYER;
    s->alproto = ALPROTO_HTTP;

    return 0;

error:
    return -1;
}

/******************************** UNITESTS **********************************/

#ifdef UNITTESTS

#include "stream-tcp-reassemble.h"

/**
 * \test Checks if a http_cookie is registered in a Signature, if content is not
 *       specified in the signature
 */
int DetectHttpCookieTest01(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(msg:\"Testing http_cookie\"; http_cookie;sid:1;)");
    if (de_ctx->sig_list == NULL)
        result = 1;

end:
    if (de_ctx != NULL)
        DetectEngineCtxFree(de_ctx);
    return result;
}

/**
 * \test Checks if a http_cookie is registered in a Signature, if some parameter
 *       is specified with http_cookie in the signature
 */
int DetectHttpCookieTest02(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(msg:\"Testing http_cookie\"; content:\"me\"; "
                               "http_cookie:woo; sid:1;)");
    if (de_ctx->sig_list == NULL)
        result = 1;

end:
    if (de_ctx != NULL)
        DetectEngineCtxFree(de_ctx);
    return result;
}

/**
 * \test Checks if a http_cookie is registered in a Signature
 */
int DetectHttpCookieTest03(void)
{
    SigMatch *sm = NULL;
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(msg:\"Testing http_cookie\"; content:\"one\"; "
                               "http_cookie; content:\"two\"; http_cookie; "
                               "content:\"two\"; http_cookie; "
                               "sid:1;)");
    if (de_ctx->sig_list == NULL) {
        printf("sig parse failed: ");
        goto end;
    }

    result = 0;
    sm = de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH];
    if (sm == NULL) {
        printf("no sigmatch(es): ");
        goto end;
    }

    while (sm != NULL) {
        if (sm->type == DETECT_AL_HTTP_COOKIE) {
            result = 1;
        } else {
            printf("expected DETECT_AL_HTTP_COOKIE, got %d: ", sm->type);
            goto end;
        }
        sm = sm->next;
    }

end:
    if (de_ctx != NULL)
        DetectEngineCtxFree(de_ctx);
    return result;
}

/**
 * \test Checks if a http_cookie is registered in a Signature, when fast_pattern
 *       is also specified in the signature (now it should)
 */
int DetectHttpCookieTest04(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(msg:\"Testing http_cookie\"; content:\"one\"; "
                               "fast_pattern; http_cookie; sid:1;)");
    if (de_ctx->sig_list != NULL)
        result = 1;

end:
    if (de_ctx != NULL) SigCleanSignatures(de_ctx);
    if (de_ctx != NULL) DetectEngineCtxFree(de_ctx);
    return result;
}

/**
 * \test Checks if a http_cookie is registered in a Signature, when rawbytes is
 *       also specified in the signature
 */
int DetectHttpCookieTest05(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(msg:\"Testing http_cookie\"; content:\"one\"; "
                               "rawbytes; http_cookie; sid:1;)");
    if (de_ctx->sig_list == NULL)
        result = 1;

 end:
    if (de_ctx != NULL) SigCleanSignatures(de_ctx);
    if (de_ctx != NULL) DetectEngineCtxFree(de_ctx);
    return result;
}

/**
 * \test Checks if a http_cookie is registered in a Signature, when rawbytes is
 *       also specified in the signature
 */
int DetectHttpCookieTest06(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
                               "(msg:\"Testing http_cookie\"; content:\"one\"; "
                               "http_cookie; uricontent:\"abc\"; sid:1;)");
    if (de_ctx->sig_list == NULL)
        goto end;

    Signature *s = de_ctx->sig_list;

    BUG_ON(s->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL);

    if (s->sm_lists[DETECT_SM_LIST_HCDMATCH]->type != DETECT_AL_HTTP_COOKIE)
        goto end;

    if (s->sm_lists[DETECT_SM_LIST_UMATCH] == NULL) {
        printf("expected another SigMatch, got NULL: ");
        goto end;
    }

    if (s->sm_lists[DETECT_SM_LIST_UMATCH]->type != DETECT_URICONTENT) {
        goto end;
    }

    result = 1;
end:
    if (de_ctx != NULL) {
        DetectEngineCtxFree(de_ctx);
    }
    return result;
}

int DetectHttpCookieTest07(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(content:one; content:one; http_cookie; sid:1;)");
    if (de_ctx->sig_list == NULL) {
        printf("de_ctx->sig_list == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL\n");
        goto end;
    }

    DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
    DetectContentData *hcd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]->ctx;
    if (cd->id == hcd->id)
        goto end;

    result = 1;

 end:
    SigCleanSignatures(de_ctx);
    DetectEngineCtxFree(de_ctx);
    return result;
}

int DetectHttpCookieTest08(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(content:one; http_cookie; content:one; sid:1;)");
    if (de_ctx->sig_list == NULL) {
        printf("de_ctx->sig_list == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL\n");
        goto end;
    }

    DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
    DetectContentData *hcd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]->ctx;
    if (cd->id == hcd->id)
        goto end;

    result = 1;

 end:
    SigCleanSignatures(de_ctx);
    DetectEngineCtxFree(de_ctx);
    return result;
}

int DetectHttpCookieTest09(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(content:one; content:one; content:one; http_cookie; content:one; sid:1;)");
    if (de_ctx->sig_list == NULL) {
        printf("de_ctx->sig_list == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL\n");
        goto end;
    }

    DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
    DetectContentData *hcd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]->ctx;
    if (cd->id != 0 || hcd->id != 1)
        goto end;

    result = 1;

 end:
    SigCleanSignatures(de_ctx);
    DetectEngineCtxFree(de_ctx);
    return result;
}

int DetectHttpCookieTest10(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(content:one; http_cookie; content:one; content:one; content:one; sid:1;)");
    if (de_ctx->sig_list == NULL) {
        printf("de_ctx->sig_list == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL\n");
        goto end;
    }

    DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
    DetectContentData *hcd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]->ctx;
    if (cd->id != 1 || hcd->id != 0)
        goto end;

    result = 1;

 end:
    SigCleanSignatures(de_ctx);
    DetectEngineCtxFree(de_ctx);
    return result;
}

int DetectHttpCookieTest11(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(content:one; http_cookie; "
                               "content:one; content:one; http_cookie; content:one; sid:1;)");
    if (de_ctx->sig_list == NULL) {
        printf("de_ctx->sig_list == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL\n");
        goto end;
    }

    DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
    DetectContentData *hcd1 = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]->ctx;
    DetectContentData *hcd2 = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]->prev->ctx;
    if (cd->id != 1 || hcd1->id != 0 || hcd2->id != 0)
        goto end;

    result = 1;

 end:
    SigCleanSignatures(de_ctx);
    DetectEngineCtxFree(de_ctx);
    return result;
}

int DetectHttpCookieTest12(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 0;

    if ( (de_ctx = DetectEngineCtxInit()) == NULL)
        goto end;

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
                               "(content:one; http_cookie; "
                               "content:one; content:one; http_cookie; content:two; sid:1;)");
    if (de_ctx->sig_list == NULL) {
        printf("de_ctx->sig_list == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] == NULL\n");
        goto end;
    }

    if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL) {
        printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_HCDMATCH] == NULL\n");
        goto end;
    }

    DetectContentData *cd = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_PMATCH]->ctx;
    DetectContentData *hcd1 = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]->ctx;
    DetectContentData *hcd2 = de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_HCDMATCH]->prev->ctx;
    if (cd->id != 2 || hcd1->id != 0 || hcd2->id != 0)
        goto end;

    result = 1;

 end:
    SigCleanSignatures(de_ctx);
    DetectEngineCtxFree(de_ctx);
    return result;
}

/** \test Check the signature working to alert when http_cookie is matched . */
static int DetectHttpCookieSigTest01(void) {
    int result = 0;
    Flow f;
    uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\nCookie:"
                         " hellocatchme\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.src.family = AF_INET;
    f.dst.family = AF_INET;

    p->flow = &f;
    p->flowflags |= FLOW_PKT_TOSERVER;
    p->flowflags |= FLOW_PKT_ESTABLISHED;
    p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
    f.alproto = ALPROTO_HTTP;

    StreamTcpInitConfig(TRUE);
    FlowL7DataPtrInit(&f);

    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:\"me\"; "
                                   "http_cookie; sid:1;)");
    if (s == NULL) {
        goto end;
    }

    s->next = SigInit(de_ctx,"alert http any any -> any any (msg:\"HTTP "
                      "cookie\"; content:\"go\"; http_cookie; sid:2;)");
    if (s->next == NULL) {
        goto end;
    }


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

    int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
    if (r != 0) {
        printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
        result = 0;
        goto end;
    }

    http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
    if (http_state == NULL) {
        printf("no http state: ");
        result = 0;
        goto end;
    }

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

    if (!(PacketAlertCheck(p, 1))) {
        printf("sid 1 didn't match but should have: ");
        goto end;
    }
    if (PacketAlertCheck(p, 2)) {
        printf("sid 2 matched but shouldn't: ");
        goto end;
    }

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

    FlowL7DataPtrFree(&f);
    StreamTcpFreeConfig(TRUE);

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

/** \test Check the signature working to alert when http_cookie is not present */
static int DetectHttpCookieSigTest02(void) {
    int result = 0;
    Flow f;
    uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\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(&p, 0, sizeof(p));
    memset(&f, 0, sizeof(f));
    memset(&ssn, 0, sizeof(ssn));

    p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);

    FLOW_INITIALIZE(&f);
    f.protoctx = (void *)&ssn;
    f.src.family = AF_INET;
    f.dst.family = AF_INET;

    p->flow = &f;
    p->flowflags |= FLOW_PKT_TOSERVER;
    p->flowflags |= FLOW_PKT_ESTABLISHED;
    p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
    f.alproto = ALPROTO_HTTP;

    StreamTcpInitConfig(TRUE);
    FlowL7DataPtrInit(&f);

    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:\"me\"; "
                                   "http_cookie; sid:1;)");
    if (s == NULL) {
        goto end;
    }

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

    int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
    if (r != 0) {
        printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
        result = 0;
        goto end;
    }

    http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
    if (http_state == NULL) {
        printf("no http state: ");
        result = 0;
        goto end;
    }

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

    if ((PacketAlertCheck(p, 1))) {
        goto end;
    }

    result = 1;

end:
    if (det_ctx != NULL) {
        DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
    }
    if (de_ctx != NULL) {
        SigGroupCleanup(de_ctx);
        DetectEngineCtxFree(de_ctx);
    }
    FlowL7DataPtrFree(&f);
    StreamTcpFreeConfig(TRUE);
    UTHFreePackets(&p, 1);
    return result;
}

/** \test Check the signature working to alert when http_cookie is not present */
static int DetectHttpCookieSigTest03(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;

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

    p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);

    FLOW_INITIALIZE(&f);
    f.protoctx = (void *)&ssn;
    f.src.family = AF_INET;
    f.dst.family = AF_INET;

    p->flow = &f;
    p->flowflags |= FLOW_PKT_TOSERVER;
    p->flowflags |= FLOW_PKT_ESTABLISHED;
    p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
    f.alproto = ALPROTO_HTTP;

    StreamTcpInitConfig(TRUE);
    FlowL7DataPtrInit(&f);

    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:boo; "
                                   "http_cookie; sid:1;)");
    if (s == NULL) {
        goto end;
    }

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

    int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
    if (r != 0) {
        printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
        result = 0;
        goto end;
    }

    http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
    if (http_state == NULL) {
        printf("no http state: ");
        result = 0;
        goto end;
    }

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

    if ((PacketAlertCheck(p, 1))) {
        goto end;
    }

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

    FlowL7DataPtrFree(&f);
    StreamTcpFreeConfig(TRUE);
    UTHFreePackets(&p, 1);
    return result;
}

/** \test Check the signature working to alert when http_cookie is not present */
static int DetectHttpCookieSigTest04(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;

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

    p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);

    FLOW_INITIALIZE(&f);
    f.protoctx = (void *)&ssn;
    f.src.family = AF_INET;
    f.dst.family = AF_INET;

    p->flow = &f;
    p->flowflags |= FLOW_PKT_TOSERVER;
    p->flowflags |= FLOW_PKT_ESTABLISHED;
    p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
    f.alproto = ALPROTO_HTTP;

    StreamTcpInitConfig(TRUE);
    FlowL7DataPtrInit(&f);

    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:!boo; "
                                   "http_cookie; sid:1;)");
    if (s == NULL) {
        goto end;
    }

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

    int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
    if (r != 0) {
        printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
        result = 0;
        goto end;
    }

    http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
    if (http_state == NULL) {
        printf("no http state: ");
        result = 0;
        goto end;
    }

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

    if (!PacketAlertCheck(p, 1)) {
        goto end;
    }

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

    FlowL7DataPtrFree(&f);
    StreamTcpFreeConfig(TRUE);
    UTHFreePackets(&p, 1);
    return result;
}

/** \test Check the signature working to alert when http_cookie is not present */
static int DetectHttpCookieSigTest05(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;

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

    p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);

    FLOW_INITIALIZE(&f);
    f.protoctx = (void *)&ssn;
    f.src.family = AF_INET;
    f.dst.family = AF_INET;

    p->flow = &f;
    p->flowflags |= FLOW_PKT_TOSERVER;
    p->flowflags |= FLOW_PKT_ESTABLISHED;
    p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
    f.alproto = ALPROTO_HTTP;

    StreamTcpInitConfig(TRUE);
    FlowL7DataPtrInit(&f);

    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; nocase; "
                                   "http_cookie; sid:1;)");
    if (s == NULL) {
        goto end;
    }

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

    int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
    if (r != 0) {
        printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
        result = 0;
        goto end;
    }

    http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
    if (http_state == NULL) {
        printf("no http state: ");
        result = 0;
        goto end;
    }

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

    if (!PacketAlertCheck(p, 1)) {
        goto end;
    }

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

    FlowL7DataPtrFree(&f);
    StreamTcpFreeConfig(TRUE);
    UTHFreePackets(&p, 1);
    return result;
}

/** \test Check the signature working to alert when http_cookie is not present */
static int DetectHttpCookieSigTest06(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;

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

    p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);

    FLOW_INITIALIZE(&f);
    f.protoctx = (void *)&ssn;
    f.src.family = AF_INET;
    f.dst.family = AF_INET;

    p->flow = &f;
    p->flowflags |= FLOW_PKT_TOSERVER;
    p->flowflags |= FLOW_PKT_ESTABLISHED;
    p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
    f.alproto = ALPROTO_HTTP;

    StreamTcpInitConfig(TRUE);
    FlowL7DataPtrInit(&f);

    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; nocase; sid:1;)");
    if (s == NULL) {
        printf("sig parse failed: ");
        goto end;
    }

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

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

    http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
    if (http_state == NULL) {
        printf("no http state: ");
        goto end;
    }

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

    if (!PacketAlertCheck(p, 1)) {
        printf("sig 1 failed to match: ");
        goto end;
    }

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

    FlowL7DataPtrFree(&f);
    StreamTcpFreeConfig(TRUE);
    UTHFreePackets(&p, 1);
    return result;
}

/** \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;

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

    p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);

    FLOW_INITIALIZE(&f);
    f.protoctx = (void *)&ssn;
    f.src.family = AF_INET;
    f.dst.family = AF_INET;

    p->flow = &f;
    p->flowflags |= FLOW_PKT_TOSERVER;
    p->flowflags |= FLOW_PKT_ESTABLISHED;
    p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
    f.alproto = ALPROTO_HTTP;

    StreamTcpInitConfig(TRUE);
    FlowL7DataPtrInit(&f);

    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);

    int r = AppLayerParse(&f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
    if (r != 0) {
        printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
        result = 0;
        goto end;
    }

    http_state = f.aldata[AlpGetStateIdx(ALPROTO_HTTP)];
    if (http_state == NULL) {
        printf("no http state: ");
        result = 0;
        goto end;
    }

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

    if (PacketAlertCheck(p, 1)) {
        goto end;
    }

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

    FlowL7DataPtrFree(&f);
    StreamTcpFreeConfig(TRUE);
    UTHFreePackets(&p, 1);
    return result;
}

#endif /* UNITTESTS */

/**
 * \brief   Register the UNITTESTS for the http_cookie keyword
 */
void DetectHttpCookieRegisterTests (void)
{
#ifdef UNITTESTS /* UNITTESTS */
    UtRegisterTest("DetectHttpCookieTest01", DetectHttpCookieTest01, 1);
    UtRegisterTest("DetectHttpCookieTest02", DetectHttpCookieTest02, 1);
    UtRegisterTest("DetectHttpCookieTest03", DetectHttpCookieTest03, 1);
    UtRegisterTest("DetectHttpCookieTest04", DetectHttpCookieTest04, 1);
    UtRegisterTest("DetectHttpCookieTest05", DetectHttpCookieTest05, 1);
    UtRegisterTest("DetectHttpCookieTest06", DetectHttpCookieTest06, 1);
    UtRegisterTest("DetectHttpCookieTest07", DetectHttpCookieTest07, 1);
    UtRegisterTest("DetectHttpCookieTest08", DetectHttpCookieTest08, 1);
    UtRegisterTest("DetectHttpCookieTest09", DetectHttpCookieTest09, 1);
    UtRegisterTest("DetectHttpCookieTest10", DetectHttpCookieTest10, 1);
    UtRegisterTest("DetectHttpCookieTest11", DetectHttpCookieTest11, 1);
    UtRegisterTest("DetectHttpCookieTest12", DetectHttpCookieTest12, 1);
    UtRegisterTest("DetectHttpCookieSigTest01", DetectHttpCookieSigTest01, 1);
    UtRegisterTest("DetectHttpCookieSigTest02", DetectHttpCookieSigTest02, 1);
    UtRegisterTest("DetectHttpCookieSigTest03", DetectHttpCookieSigTest03, 1);
    UtRegisterTest("DetectHttpCookieSigTest04", DetectHttpCookieSigTest04, 1);
    UtRegisterTest("DetectHttpCookieSigTest05", DetectHttpCookieSigTest05, 1);
    UtRegisterTest("DetectHttpCookieSigTest06", DetectHttpCookieSigTest06, 1);
    UtRegisterTest("DetectHttpCookieSigTest07", DetectHttpCookieSigTest07, 1);
#endif /* UNITTESTS */

}