/* 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 Victor Julien <victor@inliniac.net>
 *
 * Simple content match part of the detection engine.
 */

#include "suricata-common.h"
#include "decode.h"
#include "detect.h"
#include "detect-content.h"
#include "detect-uricontent.h"
#include "detect-engine-mpm.h"
#include "detect-engine.h"
#include "detect-engine-state.h"
#include "detect-parse.h"
#include "util-mpm.h"
#include "flow.h"
#include "flow-util.h"
#include "flow-var.h"
#include "detect-flow.h"
#include "app-layer.h"
#include "util-unittest.h"
#include "util-print.h"
#include "util-debug.h"
#include "util-spm-bm.h"
#include "threads.h"
#include "util-unittest-helper.h"

int DetectContentMatch (ThreadVars *, DetectEngineThreadCtx *, Packet *, Signature *, SigMatch *);
static int DetectContentSetup (DetectEngineCtx *, Signature *, char *);
void DetectContentRegisterTests(void);

void DetectContentRegister (void) {
    sigmatch_table[DETECT_CONTENT].name = "content";
    sigmatch_table[DETECT_CONTENT].Match = NULL;
    sigmatch_table[DETECT_CONTENT].Setup = DetectContentSetup;
    sigmatch_table[DETECT_CONTENT].Free  = DetectContentFree;
    sigmatch_table[DETECT_CONTENT].RegisterTests = DetectContentRegisterTests;

    sigmatch_table[DETECT_CONTENT].flags |= SIGMATCH_PAYLOAD;
}

/* pass on the content_max_id */
uint32_t DetectContentMaxId(DetectEngineCtx *de_ctx) {
    return MpmPatternIdStoreGetMaxId(de_ctx->mpm_pattern_id_store);
}

/**
 * \brief DetectContentParse
 * \initonly
 */
DetectContentData *DetectContentParse (char *contentstr)
{
    DetectContentData *cd = NULL;
    char *str = NULL;
    char *temp = NULL;
    uint16_t len;
    uint16_t pos = 0;
    uint16_t slen = 0;

    if ((temp = SCStrdup(contentstr)) == NULL) {
        SCLogError(SC_ERR_MEM_ALLOC, "Error allocating memory. Exiting...");
        exit(EXIT_FAILURE);
    }

    if (strlen(temp) == 0) {
        SCFree(temp);
        return NULL;
    }

    cd = SCMalloc(sizeof(DetectContentData));
    if (cd == NULL) {
        SCLogError(SC_ERR_MEM_ALLOC, "Error allocating memory. Exiting...");
        exit(EXIT_FAILURE);
    }

    memset(cd, 0, sizeof(DetectContentData));

    /* skip the first spaces */
    slen = strlen(temp);
    while (pos < slen && isspace(temp[pos])) {
        pos++;
    };

    if (temp[pos] == '!') {
        SCFree(temp);
        if ((temp = SCStrdup(contentstr + pos + 1)) == NULL) {
            SCLogError(SC_ERR_MEM_ALLOC, "error allocating memory. exiting...");
            exit(EXIT_FAILURE);
        }

        cd->flags |= DETECT_CONTENT_NEGATED;
    }

    if (temp[pos] == '\"' && temp[strlen(temp)-1] == '\"') {
        if ((str = SCStrdup(temp + pos + 1)) == NULL) {
            SCLogError(SC_ERR_MEM_ALLOC, "error allocating memory. exiting...");
            exit(EXIT_FAILURE);
        }

        str[strlen(temp) - pos - 2] = '\0';
    } else {
        if ((str = SCStrdup(temp + pos)) == NULL) {
            SCLogError(SC_ERR_MEM_ALLOC, "error allocating memory. exiting...");
            exit(EXIT_FAILURE);
        }
    }

    SCFree(temp);
    temp = NULL;

    /*This was submitted as a patch for bug #11.  But this impliments incorrect behavior as !
     *inside of quotes should be treated as normal match. */
    //if (str[0] == '!') {
    //    if (cd->flags cd->negated == 1 DETECT_CONTENT_NEGATED) {
    //        SCLogDebug("Invalid negated content. \"!\" located twice at the "
    //                   "start of the contet string: %s", contentstr);
    //        goto error;
    //    } else {
    //        temp = str;
    //        if ( (str = SCStrdup(temp + 1)) == NULL)
    //            goto error;
    //        cd->negated = 1;
    //        SCFree(temp);
    //        temp = NULL;
    //    }
    //}

    len = strlen(str);
    if (len == 0)
        goto error;

    //SCLogDebug("DetectContentParse: \"%s\", len %" PRIu32 "", str, len);
    char converted = 0;

    {
        uint16_t i, x;
        uint8_t bin = 0;
        uint8_t escape = 0;
        uint8_t binstr[3] = "";
        uint8_t binpos = 0;

        for (i = 0, x = 0; i < len; i++) {
            // SCLogDebug("str[%02u]: %c", i, str[i]);
            if (str[i] == '|') {
                if (bin) {
                    bin = 0;
                } else {
                    bin = 1;
                }
            } else if(!escape && str[i] == '\\') {
                escape = 1;
            } else {
                if (bin) {
                    if (isdigit(str[i]) ||
                            str[i] == 'A' || str[i] == 'a' ||
                            str[i] == 'B' || str[i] == 'b' ||
                            str[i] == 'C' || str[i] == 'c' ||
                            str[i] == 'D' || str[i] == 'd' ||
                            str[i] == 'E' || str[i] == 'e' ||
                            str[i] == 'F' || str[i] == 'f')
                    {
                        // SCLogDebug("part of binary: %c", str[i]);

                        binstr[binpos] = (char)str[i];
                        binpos++;

                        if (binpos == 2) {
                            uint8_t c = strtol((char *)binstr, (char **) NULL, 16) & 0xFF;
                            binpos = 0;
                            str[x] = c;
                            x++;
                            converted = 1;
                        }
                    } else if (str[i] == ' ') {
                        // SCLogDebug("space as part of binary string");
                    }
                } else if (escape) {
                    if (str[i] == ':' ||
                        str[i] == ';' ||
                        str[i] == '\\' ||
                        str[i] == '\"')
                    {
                        str[x] = str[i];
                        x++;
                    } else {
                        //SCLogDebug("Can't escape %c", str[i]);
                        goto error;
                    }
                    escape = 0;
                    converted = 1;
                } else {
                    str[x] = str[i];
                    x++;
                }
            }
        }
#if 0//def DEBUG
        if (SCLogDebugEnabled()) {
            for (i = 0; i < x; i++) {
                if (isprint(str[i])) SCLogDebug("%c", str[i]);
                else                 SCLogDebug("\\x%02u", str[i]);
            }
            SCLogDebug("");
        }
#endif

        if (converted) {
            len = x;
        }
    }

    cd->content = SCMalloc(len);
    if (cd->content == NULL) {
        SCLogError(SC_ERR_MEM_ALLOC, "error allocating memory. exiting...");
        exit(EXIT_FAILURE);
    }

    memcpy(cd->content, str, len);
    cd->content_len = len;

    /* Prepare Boyer Moore context for searching faster */
    cd->bm_ctx = BoyerMooreCtxInit(cd->content, cd->content_len);
    cd->depth = 0;
    cd->offset = 0;
    cd->within = 0;
    cd->distance = 0;

    SCFree(str);
    return cd;

error:
    SCFree(str);
    SCFree(temp);
    if (cd != NULL) {
        if (cd->content != NULL)
            SCFree(cd->content);
        SCFree(cd);
    }
    return NULL;
}

/**
 * \brief Helper function to print a DetectContentData
 */
void DetectContentPrint(DetectContentData *cd)
{
    int i = 0;
    if (cd == NULL) {
        SCLogDebug("DetectContentData \"cd\" is NULL");
        return;
    }
    char *tmpstr=SCMalloc(sizeof(char) * cd->content_len + 1);

    if (tmpstr != NULL) {
        for (i = 0; i < cd->content_len; i++) {
            if (isprint(cd->content[i]))
                tmpstr[i] = cd->content[i];
            else
                tmpstr[i] = '.';
        }
        tmpstr[i] = '\0';
        SCLogDebug("Content: \"%s\"", tmpstr);
        SCFree(tmpstr);
    } else {
        SCLogDebug("Content: ");
        for (i = 0; i < cd->content_len; i++)
            SCLogDebug("%c", cd->content[i]);
    }

    SCLogDebug("Content_id: %"PRIu32, cd->id);
    SCLogDebug("Content_len: %"PRIu16, cd->content_len);
    SCLogDebug("Depth: %"PRIu16, cd->depth);
    SCLogDebug("Offset: %"PRIu16, cd->offset);
    SCLogDebug("Within: %"PRIi32, cd->within);
    SCLogDebug("Distance: %"PRIi32, cd->distance);
    SCLogDebug("flags: %u ", cd->flags);
    SCLogDebug("negated: %s ", cd->flags & DETECT_CONTENT_NEGATED ? "true" : "false");
    SCLogDebug("relative match next: %s ", cd->flags & DETECT_CONTENT_RELATIVE_NEXT ? "true" : "false");
    SCLogDebug("-----------");
}

/**
 * \brief Search the next applicable DETECT_CONTENT SigMatch
          (includes the current sm)
 *
 * \param sm pointer to the current SigMatch of a parsing process
 *
 * \retval null if no applicable DetectContent was found
 * \retval pointer to the SigMatch next DETECT_CONTENT SigMatch
 */
SigMatch *DetectContentFindNextApplicableSM(SigMatch *sm)
{
    if (sm == NULL)
        return NULL;
    while ( sm != NULL && sm->type != DETECT_CONTENT)
        sm = sm->next;

    return sm;
}

/**
 * \brief Helper function to determine if there are patterns before this one,
 *        this is used before installing a new within or distance modifier
 *        because if this return NULL, it will never match!
 *
 * \param sm pointer to the current SigMatch of a parsing process
 *
 * \retval null if no applicable SigMatch pattern was found
 * \retval pointer to the SigMatch that has the previous SigMatch
 *                 of type DetectContent
 *
 * \todo: should we add here DETECT_PCRE, DETECT_URI_CONTENT, etc?
 */
SigMatch *DetectContentHasPrevSMPattern(SigMatch *sm)
{
    if (sm == NULL)
        return NULL;

    /* the current SM doesn't apply */
    sm = sm->prev;
    while (sm != NULL && sm->type != DETECT_CONTENT)
        sm = sm->prev;
    return sm;
}

/**
 * \brief Search the first DETECT_CONTENT
 * \retval pointer to the SigMatch holding the DetectContent
 * \param sm pointer to the current SigMatch of a parsing process
 * \retval null if no applicable DetectContent was found
 * \retval pointer to the SigMatch that has the previous SigMatch
 *                 of type DetectContent
 */
SigMatch *DetectContentGetLastPattern(SigMatch *sm)
{
    if (sm == NULL)
        return NULL;
    while (sm != NULL && sm->type != DETECT_CONTENT)
        sm = sm->prev;

    if (sm == NULL)
        return NULL;

    DetectContentData *cd = (DetectContentData*) sm->ctx;
    if (cd == NULL)
        return NULL;

    return sm;
}

/** \brief get the last pattern sigmatch, content or uricontent
 *
 *  \param s signature
 *
 *  \retval sm sigmatch of either content or uricontent that is the last
 *             or NULL if none was found
 */
SigMatch *SigMatchGetLastPattern(Signature *s) {
    SCEnter();

    BUG_ON(s == NULL);

    SigMatch *co_sm = DetectContentGetLastPattern(s->pmatch_tail);
    SigMatch *ur_sm = SigMatchGetLastSM(s->umatch_tail, DETECT_URICONTENT);
    SigMatch *sm = NULL;

    if (co_sm != NULL && ur_sm != NULL) {
        if (co_sm->idx > ur_sm->idx)
            sm = co_sm;
        else
            sm = ur_sm;
    } else if (co_sm != NULL) {
        sm = co_sm;
    } else if (ur_sm != NULL) {
        sm = ur_sm;
    }

    SCReturnPtr(sm, "SigMatch");
}

/**
 * \brief Print list of DETECT_CONTENT SigMatch's allocated in a
 * SigMatch list, from the current sm to the end
 * \param sm pointer to the current SigMatch to start printing from
 */
void DetectContentPrintAll(SigMatch *sm)
{
#ifdef DEBUG
    if (SCLogDebugEnabled()) {
        int i = 0;

        if (sm == NULL)
            return;

        SigMatch *first_sm = sm;

       /* Print all of them */
        for (; first_sm != NULL; first_sm = first_sm->next) {
            if (first_sm->type == DETECT_CONTENT) {
                SCLogDebug("Printing SigMatch DETECT_CONTENT %d", ++i);
                DetectContentPrint(first_sm->ctx);
            }
        }
    }
#endif /* DEBUG */
}

/**
 * \brief Function to setup a content pattern.
 *
 * \param de_ctx pointer to the current detection_engine
 * \param s pointer to the current Signature
 * \param m pointer to the last parsed SigMatch
 * \param contentstr pointer to the current keyword content string
 * \retval -1 if error
 * \retval 0 if all was ok
 */
static int DetectContentSetup (DetectEngineCtx *de_ctx, Signature *s, char *contentstr)
{
    DetectContentData *cd = NULL;
    SigMatch *sm = NULL;

    cd = DetectContentParse(contentstr);
    if (cd == NULL) goto error;

    sm = SigMatchAlloc();
    if (sm == NULL)
        goto error;

    sm->type = DETECT_CONTENT;
    sm->ctx = (void *)cd;
    cd->id = DetectContentGetId(de_ctx->mpm_pattern_id_store, cd);

    DetectContentPrint(cd);

    SigMatchAppendPayload(s, sm);

    return 0;

error:
    if (cd != NULL)
        DetectContentFree(cd);
    if (sm != NULL)
        SCFree(sm);
    return -1;
}

/**
 * \brief this function will SCFree memory associated with DetectContentData
 *
 * \param cd pointer to DetectCotentData
 */
void DetectContentFree(void *ptr) {
    SCEnter();
    DetectContentData *cd = (DetectContentData *)ptr;

    if (cd == NULL)
        SCReturn;

    if (cd->content != NULL)
        SCFree(cd->content);

    BoyerMooreCtxDeInit(cd->bm_ctx);

    SCFree(cd);
    SCReturn;
}

#ifdef UNITTESTS /* UNITTESTS */

/**
 * \test DetectCotentParseTest01 this is a test to make sure we can deal with escaped colons
 */
int DetectContentParseTest01 (void) {
    int result = 1;
    DetectContentData *cd = NULL;
    char *teststring = "\"abc\\:def\"";
    char *teststringparsed = "abc:def";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (memcmp(cd->content, teststringparsed, strlen(teststringparsed)) != 0) {
            SCLogDebug("expected %s got ", teststringparsed);
            PrintRawUriFp(stdout,cd->content,cd->content_len);
            SCLogDebug(": ");
            result = 0;
            DetectContentFree(cd);
        }
    } else {
        SCLogDebug("expected %s got NULL: ", teststringparsed);
        result = 0;
    }
    return result;
}

/**
 * \test DetectCotentParseTest02 this is a test to make sure we can deal with escaped semi-colons
 */
int DetectContentParseTest02 (void) {
    int result = 1;
    DetectContentData *cd = NULL;
    char *teststring = "\"abc\\;def\"";
    char *teststringparsed = "abc;def";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (memcmp(cd->content, teststringparsed, strlen(teststringparsed)) != 0) {
            SCLogDebug("expected %s got ", teststringparsed);
            PrintRawUriFp(stdout,cd->content,cd->content_len);
            SCLogDebug(": ");
            result = 0;
            DetectContentFree(cd);
        }
    } else {
        SCLogDebug("expected %s got NULL: ", teststringparsed);
        result = 0;
    }
    return result;
}

/**
 * \test DetectCotentParseTest03 this is a test to make sure we can deal with escaped double-quotes
 */
int DetectContentParseTest03 (void) {
    int result = 1;
    DetectContentData *cd = NULL;
    char *teststring = "\"abc\\\"def\"";
    char *teststringparsed = "abc\"def";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (memcmp(cd->content, teststringparsed, strlen(teststringparsed)) != 0) {
            SCLogDebug("expected %s got ", teststringparsed);
            PrintRawUriFp(stdout,cd->content,cd->content_len);
            SCLogDebug(": ");
            result = 0;
            DetectContentFree(cd);
        }
    } else {
        SCLogDebug("expected %s got NULL: ", teststringparsed);
        result = 0;
    }
    return result;
}

/**
 * \test DetectCotentParseTest04 this is a test to make sure we can deal with escaped backslashes
 */
int DetectContentParseTest04 (void) {
    int result = 1;
    DetectContentData *cd = NULL;
    char *teststring = "\"abc\\\\def\"";
    char *teststringparsed = "abc\\def";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        uint16_t len = (cd->content_len > strlen(teststringparsed));
        if (memcmp(cd->content, teststringparsed, len) != 0) {
            SCLogDebug("expected %s got ", teststringparsed);
            PrintRawUriFp(stdout,cd->content,cd->content_len);
            SCLogDebug(": ");
            result = 0;
            DetectContentFree(cd);
        }
    } else {
        SCLogDebug("expected %s got NULL: ", teststringparsed);
        result = 0;
    }
    return result;
}

/**
 * \test DetectCotentParseTest05 test illegal escape
 */
int DetectContentParseTest05 (void) {
    int result = 1;
    DetectContentData *cd = NULL;
    char *teststring = "\"abc\\def\"";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        SCLogDebug("expected NULL got ");
        PrintRawUriFp(stdout,cd->content,cd->content_len);
        SCLogDebug(": ");
        result = 0;
        DetectContentFree(cd);
    }
    return result;
}

/**
 * \test DetectCotentParseTest06 test a binary content
 */
int DetectContentParseTest06 (void) {
    int result = 1;
    DetectContentData *cd = NULL;
    char *teststring = "\"a|42|c|44|e|46|\"";
    char *teststringparsed = "abcdef";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        uint16_t len = (cd->content_len > strlen(teststringparsed));
        if (memcmp(cd->content, teststringparsed, len) != 0) {
            SCLogDebug("expected %s got ", teststringparsed);
            PrintRawUriFp(stdout,cd->content,cd->content_len);
            SCLogDebug(": ");
            result = 0;
            DetectContentFree(cd);
        }
    } else {
        SCLogDebug("expected %s got NULL: ", teststringparsed);
        result = 0;
    }
    return result;
}

/**
 * \test DetectCotentParseTest07 test an empty content
 */
int DetectContentParseTest07 (void) {
    int result = 1;
    DetectContentData *cd = NULL;
    char *teststring = "\"\"";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        SCLogDebug("expected NULL got %p: ", cd);
        result = 0;
        DetectContentFree(cd);
    }
    return result;
}

/**
 * \test DetectCotentParseTest08 test an empty content
 */
int DetectContentParseTest08 (void) {
    int result = 1;
    DetectContentData *cd = NULL;
    char *teststring = "";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        SCLogDebug("expected NULL got %p: ", cd);
        result = 0;
        DetectContentFree(cd);
    }
    return result;
}

/**
 * \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 DetectContentLongPatternMatchTest(uint8_t *raw_eth_pkt, uint16_t pktsize, char *sig,
                      uint32_t sid)
{
    int result = 0;

    Packet p;
    DecodeThreadVars dtv;

    ThreadVars th_v;
    DetectEngineThreadCtx *det_ctx = NULL;

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

    FlowInitConfig(FLOW_QUIET);
    DecodeEthernet(&th_v, &dtv, &p, raw_eth_pkt, 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->pmatch_tail->type == DETECT_CONTENT) {
        DetectContentData *co = (DetectContentData *)de_ctx->sig_list->pmatch_tail->ctx;
        if (co->flags & DETECT_CONTENT_RELATIVE_NEXT) {
            printf("relative next flag set on final match which is content: ");
            goto end;
        }
    }

    SCLogDebug("---DetectContentLongPatternMatchTest---");
    DetectContentPrintAll(de_ctx->sig_list->match);

    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) {
        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);
        DetectEngineCtxFree(de_ctx);
    }
    FlowShutdown();

    return result;
}

/**
 * \brief Wrapper for DetectContentLongPatternMatchTest
 */
int DetectContentLongPatternMatchTestWrp(char *sig, uint32_t sid) {
    /** Real packet with the following tcp data:
     * "Hi, this is a big test to check content matches of splitted"
     * "patterns between multiple chunks!"
     * (without quotes! :) )
     */
    uint8_t raw_eth_pkt[] = {
        0xff,0xff,0xff,0xff,0xff,0xff,0x00,0x00,
        0x00,0x00,0x00,0x00,0x08,0x00,0x45,0x00,
        0x00,0x85,0x00,0x01,0x00,0x00,0x40,0x06,
        0x7c,0x70,0x7f,0x00,0x00,0x01,0x7f,0x00,
        0x00,0x01,0x00,0x14,0x00,0x50,0x00,0x00,
        0x00,0x00,0x00,0x00,0x00,0x00,0x50,0x02,
        0x20,0x00,0xc9,0xad,0x00,0x00,0x48,0x69,
        0x2c,0x20,0x74,0x68,0x69,0x73,0x20,0x69,
        0x73,0x20,0x61,0x20,0x62,0x69,0x67,0x20,
        0x74,0x65,0x73,0x74,0x20,0x74,0x6f,0x20,
        0x63,0x68,0x65,0x63,0x6b,0x20,0x63,0x6f,
        0x6e,0x74,0x65,0x6e,0x74,0x20,0x6d,0x61,
        0x74,0x63,0x68,0x65,0x73,0x20,0x6f,0x66,
        0x20,0x73,0x70,0x6c,0x69,0x74,0x74,0x65,
        0x64,0x20,0x70,0x61,0x74,0x74,0x65,0x72,
        0x6e,0x73,0x20,0x62,0x65,0x74,0x77,0x65,
        0x65,0x6e,0x20,0x6d,0x75,0x6c,0x74,0x69,
        0x70,0x6c,0x65,0x20,0x63,0x68,0x75,0x6e,
        0x6b,0x73,0x21 }; /* end raw_eth_pkt */

    return DetectContentLongPatternMatchTest(raw_eth_pkt, (uint16_t)sizeof(raw_eth_pkt),
                             sig, sid);
}

/**
 * \test Check if we match a normal pattern (not splitted)
 */
int DetectContentLongPatternMatchTest01()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\";"
                " content:\"Hi, this is a big test\"; sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check if we match a splitted pattern
 */
int DetectContentLongPatternMatchTest02()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\";"
                " content:\"Hi, this is a big test to check content matches of"
                " splitted patterns between multiple chunks!\"; sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check that we don't match the signature if one of the splitted
 * chunks doesn't match the packet
 */
int DetectContentLongPatternMatchTest03()
{
    /** The last chunk of the content should not match */
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\";"
                " content:\"Hi, this is a big test to check content matches of"
                " splitted patterns between multiple splitted chunks!\"; sid:1;)";
    return (DetectContentLongPatternMatchTestWrp(sig, 1) == 0) ? 1: 0;
}

/**
 * \test Check if we match multiple content (not splitted)
 */
int DetectContentLongPatternMatchTest04()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\"; "
                " content:\"Hi, this is\"; depth:15 ;content:\"a big test\"; "
                " within:15; content:\"to check content matches of\"; "
                " within:30; content:\"splitted patterns\"; distance:1; "
                " within:30; depth:400;"
                " sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check that we match packets with multiple chunks and not chunks
 * Here we should specify only contents that fit in 32 bytes
 * Each of them with their modifier values
 */
int DetectContentLongPatternMatchTest05()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\"; "
                " content:\"Hi, this is a big\"; depth:17; "
                " isdataat:30, relative; "
                " content:\"test\"; within: 5; distance:1; depth:22; "
                " isdataat:15, relative; offset:18; "
                " content:\"of splitted\"; within:37; distance:15; "
                " depth:60; isdataat:20,relative; offset: 48; "
                " content:\"patterns\"; within:9; distance:1; depth:69; "
                " isdataat:10, relative; offset:60; "
                " sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check that we match packets with multiple chunks and not chunks
 * Here we should specify contents that fit and contents that must be splitted
 * Each of them with their modifier values
 */
int DetectContentLongPatternMatchTest06()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\"; "
                " content:\"Hi, this is a big test to check cont\"; depth:36;"
                " content:\"ent matches\"; within:11; distance:0; "
                " content:\"of splitted patterns between multiple\"; "
                " within:38; distance:1; offset:47; depth:85; "
                " content:\"chunks!\"; within: 8; distance:1; "
                " depth:94; offset: 50; "
                " sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check if we match contents that are in the payload
 * but not in the same order as specified in the signature
 */
int DetectContentLongPatternMatchTest07()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\"; "
                " content:\"chunks!\"; "
                " content:\"content matches\"; offset:32; depth:47; "
                " content:\"of splitted patterns between multiple\"; "
                " content:\"Hi, this is a big\"; offset:0; depth:17; "
                " sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check if we match contents that are in the payload
 * but not in the same order as specified in the signature
 */
int DetectContentLongPatternMatchTest08()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\"; "
                " content:\"ent matches\"; "
                " content:\"of splitted patterns between multiple\"; "
                " within:38; distance:1; offset:47; depth:85; "
                " content:\"chunks!\"; within: 8; distance:1; "
                " depth:94; offset: 50; "
                " content:\"Hi, this is a big test to check cont\"; depth:36;"
                " sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check if we match contents that are in the payload
 * but not in the same order as specified in the signature
 */
int DetectContentLongPatternMatchTest09()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\"; "
                " content:\"ent matches\"; "
                " content:\"of splitted patterns between multiple\"; "
                " within:38; distance:1; offset:47; depth:85; "
                " content:\"chunks!\"; within: 8; distance:1; "
                " depth:94; offset: 50; "
                " content:\"Hi, this is a big test to chec\"; depth:36;"
                " content:\"k cont\"; distance:0; within:6;"
                " sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check if we match two consecutive simple contents
 */
int DetectContentLongPatternMatchTest10()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\"; "
                " content:\"Hi, this is a big test to check \"; "
                " content:\"con\"; "
                " sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

/**
 * \test Check if we match two contents of length 1
 */
int DetectContentLongPatternMatchTest11()
{
    char *sig = "alert tcp any any -> any any (msg:\"Nothing..\"; "
                " content:\"H\"; "
                " content:\"i\"; "
                " sid:1;)";
    return DetectContentLongPatternMatchTestWrp(sig, 1);
}

int DetectContentParseTest09(void) {
    int result = 0;
    DetectContentData *cd = NULL;
    char *teststring = "!boo";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (cd->flags & DETECT_CONTENT_NEGATED)
            result = 1;

        DetectContentFree(cd);
    }

    return result;
}

int DetectContentParseTest10(void) {
    int result = 0;
    DetectContentData *cd = NULL;
    char *teststring = "!\"boo\"";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (cd->flags & DETECT_CONTENT_NEGATED)
            result = 1;

        DetectContentFree(cd);
    }
    return result;
}

int DetectContentParseNegTest11(void) {
    int result = 0;
    DetectContentData *cd = NULL;
    char *teststring = "boo";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (!(cd->flags & DETECT_CONTENT_NEGATED))
            result = 1;

        DetectContentFree(cd);
    }
    return result;
}

int DetectContentParseNegTest12(void) {
    int result = 0;
    DetectContentData *cd = NULL;
    char *teststring = "\"boo\"";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (!(cd->flags & DETECT_CONTENT_NEGATED))
            result = 1;

        DetectContentFree(cd);
    }
    return result;
}

int DetectContentParseNegTest13(void) {
    int result = 0;
    DetectContentData *cd = NULL;
    char *teststring = "!\"boo\"";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (cd->flags & DETECT_CONTENT_NEGATED)
            result = 1;

        DetectContentFree(cd);
    }
    return result;
}

int DetectContentParseNegTest14(void) {
    int result = 0;
    DetectContentData *cd = NULL;
    char *teststring = "  \"!boo\"";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (!(cd->flags & DETECT_CONTENT_NEGATED))
            result = 1;

        DetectContentFree(cd);
    }
    return result;
}

int DetectContentParseNegTest15(void) {
    int result = 0;
    DetectContentData *cd = NULL;
    char *teststring = "  !boo";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        if (cd->flags & DETECT_CONTENT_NEGATED)
            result = 1;

        DetectContentFree(cd);
    }
    return result;
}

int DetectContentParseNegTest16(void) {
    int result = 0;
    DetectContentData *cd = NULL;
    char *teststring = "  boo";

    cd = DetectContentParse(teststring);
    if (cd != NULL) {
        result = (cd->content_len == 3 && memcmp(cd->content,"boo",3) == 0);
        DetectContentFree(cd);
    }
    return result;
}

/**
 * \test Test cases where if within specified is < content lenggth we invalidate
 *       the sig.
 */
int DetectContentParseTest17(void)
{
    int result = 0;
    char *sigstr = "alert tcp any any -> any any (msg:\"Dummy\"; "
        "content:one; content:two; within:2; sid:1;)";

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

    de_ctx->sig_list = SigInit(de_ctx, sigstr);
    if (de_ctx->sig_list != NULL)
        goto end;

    result = 1;

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

/**
 * \test Test content for dce sig.
 */
int DetectContentParseTest18(void)
{
    Signature *s = SigAlloc();
    int result = 1;
    DetectEngineCtx *de_ctx = DetectEngineCtxInit();
    if (de_ctx == NULL) {
        result = 0;
        goto end;
    }

    s->alproto = ALPROTO_DCERPC;

    result &= (DetectContentSetup(de_ctx, s, "one") == 0);
    result &= (s->dmatch == NULL && s->pmatch != NULL);

    SigFree(s);

    s = SigAlloc();
    result &= (DetectContentSetup(de_ctx, s, "one") == 0);
    result &= (s->dmatch == NULL && s->pmatch != NULL);

 end:
    SigFree(s);
    DetectEngineCtxFree(de_ctx);

    return result;
}

/**
 * \test Test content for dce sig.
 */
int DetectContentParseTest19(void)
{
    DetectEngineCtx *de_ctx = NULL;
    int result = 1;
    Signature *s = NULL;
    DetectContentData *data = NULL;

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

    de_ctx->flags |= DE_QUIET;
    de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
                               "(msg:\"Testing bytejump_body\"; "
                               "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
                               "dce_stub_data; "
                               "content:one; distance:0; sid:1;)");
    if (de_ctx->sig_list == NULL) {
        result = 0;
        goto end;
    }
    s = de_ctx->sig_list;
    if (s->dmatch_tail == NULL) {
        result = 0;
        goto end;
    }
    result &= (s->dmatch_tail->type == DETECT_CONTENT);
    result &= (s->pmatch == NULL);
    data = (DetectContentData *)s->dmatch_tail->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        data->flags & DETECT_CONTENT_WITHIN ||
        !(data->flags & DETECT_CONTENT_DISTANCE) ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }

    s->next = SigInit(de_ctx, "alert tcp any any -> any any "
                      "(msg:\"Testing bytejump_body\"; "
                      "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
                      "dce_stub_data; "
                      "content:one; distance:0; content:two; within:10; sid:1;)");
    if (s->next == NULL) {
        result = 0;
        goto end;
    }
    s = s->next;
    if (s->dmatch_tail == NULL) {
        result = 0;
        goto end;
    }
    result &= (s->dmatch_tail->type == DETECT_CONTENT);
    result &= (s->pmatch == NULL);
    data = (DetectContentData *)s->dmatch_tail->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        !(data->flags & DETECT_CONTENT_WITHIN) ||
        data->flags & DETECT_CONTENT_DISTANCE ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }
    result &= (data->within == 10);

    s->next = SigInit(de_ctx, "alert tcp any any -> any any "
                      "(msg:\"Testing bytejump_body\"; "
                      "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
                      "dce_stub_data; "
                      "content:one; offset:5; depth:9; distance:0; "
                      "content:two; within:10; offset:10; depth:13; sid:1;)");
    if (s->next == NULL) {
        result = 0;
        goto end;
    }
    s = s->next;
    if (s->dmatch_tail == NULL) {
        result = 0;
        goto end;
    }
    result &= (s->dmatch_tail->type == DETECT_CONTENT);
    result &= (s->pmatch == NULL);
    data = (DetectContentData *)s->dmatch_tail->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        !(data->flags & DETECT_CONTENT_WITHIN) ||
        data->flags & DETECT_CONTENT_DISTANCE ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }
    result &= (data->within == 10 && data->offset == 10 && data->depth == 23);
    data = (DetectContentData *)s->dmatch->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        data->flags & DETECT_CONTENT_WITHIN ||
        !(data->flags & DETECT_CONTENT_DISTANCE) ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }
    result &= (data->offset == 5 && data->depth == 14);

    s->next = SigInit(de_ctx, "alert tcp any any -> any any "
                      "(msg:\"Testing bytejump_body\"; "
                      "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
                      "dce_stub_data; "
                      "content:one; distance:0; "
                      "content:two; distance:2; sid:1;)");
    if (s->next == NULL) {
        result = 0;
        goto end;
    }
    s = s->next;
    if (s->dmatch_tail == NULL) {
        result = 0;
        goto end;
    }
    result &= (s->dmatch_tail->type == DETECT_CONTENT);
    result &= (s->pmatch == NULL);
    data = (DetectContentData *)s->dmatch_tail->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        data->flags & DETECT_CONTENT_WITHIN ||
        !(data->flags & DETECT_CONTENT_DISTANCE) ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }
    result &= (data->distance == 2);

    s->next = SigInit(de_ctx, "alert tcp any any -> any any "
                      "(msg:\"Testing bytejump_body\"; "
                      "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
                      "dce_stub_data; "
                      "content:one; distance:0; "
                      "content:two; within:10; distance:2; sid:1;)");
    if (s->next == NULL) {
        result = 0;
        goto end;
    }
    s = s->next;
    if (s->dmatch_tail == NULL) {
        result = 0;
        goto end;
    }
    result &= (s->dmatch_tail->type == DETECT_CONTENT);
    result &= (s->pmatch == NULL);
    data = (DetectContentData *)s->dmatch_tail->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        !(data->flags & DETECT_CONTENT_WITHIN) ||
        !(data->flags & DETECT_CONTENT_DISTANCE) ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }
    result &= (data->within == 10 && data->distance == 2);

    s->next = SigInit(de_ctx, "alert tcp any any -> any any "
                      "(msg:\"Testing bytejump_body\"; "
                      "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
                      "dce_stub_data; "
                      "content:one; distance:0; offset:10; sid:1;)");
    if (s->next == NULL) {
        result = 0;
        goto end;
    }
    s = s->next;
    if (s->dmatch_tail == NULL) {
        result = 0;
        goto end;
    }
    result &= (s->dmatch_tail->type == DETECT_CONTENT);
    result &= (s->pmatch == NULL);
    data = (DetectContentData *)s->dmatch_tail->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        data->flags & DETECT_CONTENT_WITHIN ||
        !(data->flags & DETECT_CONTENT_DISTANCE) ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }
    result &= (data->offset == 10);

    s->next = SigInit(de_ctx, "alert tcp any any -> any any "
                      "(msg:\"Testing bytejump_body\"; "
                      "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
                      "dce_stub_data; "
                      "content:one; distance:0; depth:10; sid:1;)");
    if (s->next == NULL) {
        result = 0;
        goto end;
    }
    s = s->next;
    if (s->dmatch_tail == NULL) {
        result = 0;
        goto end;
    }
    result &= (s->dmatch_tail->type == DETECT_CONTENT);
    result &= (s->pmatch == NULL);
    data = (DetectContentData *)s->dmatch_tail->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        data->flags & DETECT_CONTENT_WITHIN ||
        !(data->flags & DETECT_CONTENT_DISTANCE) ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }
    result &= (data->depth == 10);

    s->next = SigInit(de_ctx, "alert tcp any any -> any any "
                      "(msg:\"Testing bytejump_body\"; "
                      "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
                      "dce_stub_data; "
                      "content:one; distance:0; offset:10; depth:2; sid:1;)");
    if (s->next == NULL) {
        result = 0;
        goto end;
    }
    s = s->next;
    if (s->dmatch_tail == NULL) {
        result = 0;
        goto end;
    }
    result &= (s->dmatch_tail->type == DETECT_CONTENT);
    result &= (s->pmatch == NULL);
    data = (DetectContentData *)s->dmatch_tail->ctx;
    if (data->flags & DETECT_CONTENT_RAWBYTES ||
        data->flags & DETECT_CONTENT_NOCASE ||
        data->flags & DETECT_CONTENT_WITHIN ||
        !(data->flags & DETECT_CONTENT_DISTANCE) ||
        data->flags & DETECT_CONTENT_FAST_PATTERN ||
        data->flags & DETECT_CONTENT_NEGATED ||
        result == 0) {
        result = 0;
        goto end;
    }
    result &= (data->offset == 10 && data->depth == 13);

    s->next = SigInit(de_ctx, "alert tcp any any -> any any "
                      "(msg:\"Testing bytejump_body\"; "
                      "content:one; sid:1;)");
    if (s->next == NULL) {
        result = 0;
        goto end;
    }
    s = s->next;
    if (s->dmatch_tail != NULL) {
        result = 0;
        goto end;
    }
    result &= (s->pmatch != NULL);

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

    return result;
}

static int SigTestPositiveTestContent(char *rule, uint8_t *buf)
{
    uint16_t buflen = strlen((char *)buf);
    Packet *p = NULL;
    ThreadVars th_v;
    DetectEngineThreadCtx *det_ctx = NULL;
    int result = 0;

    memset(&th_v, 0, sizeof(th_v));
    p = UTHBuildPacket(buf, buflen, IPPROTO_TCP);

    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);

    SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
    if (PacketAlertCheck(p, 1) != 1) {
        goto end;
    }

    result = 1;
end:
    if (de_ctx != NULL) {
        SigGroupCleanup(de_ctx);
        SigCleanSignatures(de_ctx);

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

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

static int SigTestNegativeTestContent(char *rule, uint8_t *buf)
{
    uint16_t buflen = strlen((char *)buf);
    Packet *p = NULL;
    ThreadVars th_v;
    DetectEngineThreadCtx *det_ctx = NULL;
    int result = 0;
    memset(&th_v, 0, sizeof(th_v));

    p = UTHBuildPacket(buf, buflen, IPPROTO_TCP);

    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);

    SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
    if (PacketAlertCheck(p, 1) != 0) {
        goto end;
    }

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

/**
 * \test A positive test that checks that the content string doesn't contain
 *       the negated content
 */
static int SigTest41TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:!GES; sid:1;)", (uint8_t *)"GET /one/ HTTP/1.1\r\n Host: one.example.org\r\n\r\n\r\nGET /two/ HTTP/1.1\r\nHost: two.example.org\r\n\r\n\r\n");
}

/**
 * \test A positive test that checks that the content string doesn't contain
 *       the negated content within the specified depth
 */
static int SigTest42TestNegatedContent(void)
{                                                                                                                                                        // 01   5    10   15   20  24
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:!twentythree; depth:22; offset:35; sid:1;)",  (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A negative test that checks that the content string doesn't contain
 *       the negated content within the specified depth, and also after the
 *       specified offset. Since the content is there, the match fails. 
 *
 *       Match is at offset:23, depth:34
 */
static int SigTest43TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:!twentythree; depth:34; offset:23; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A negative test that checks that the content string doesn't contain
 *       the negated content after the specified offset and within the specified
 *       depth.
 */
static int SigTest44TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:!twentythree; offset:40; depth:35; sid:1;)",  (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A positive test that uses a combination of content string with negated
 *       content string
 */
static int SigTest45TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; depth:5; content:!twentythree; depth:23; sid:1;)",  (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A negative test that uses a combination of content string with negated
 *       content string, with we receiving a failure for 'onee' itself.
 */
static int SigTest46TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:onee; content:!twentythree; depth:23; sid:1;)",  (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A negative test that uses a combination of content string with negated
 *       content string, with we receiving a failure of first content's offset
 *       condition
 */
static int SigTest47TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; offset:5; content:!twentythree; depth:23; sid:1;)",  (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A positive test that checks that we don't have a negated content within
 *       the specified length from the previous content match.
 */
static int SigTest48TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:GET; content:!GES; within:26; sid:1;)", (uint8_t *)"GET /one/ HTTP/1.1\r\n Host: one.example.org\r\n\r\n\r\nGET /two/ HTTP/1.1\r\nHost: two.example.org\r\n\r\n\r\n");
}

/**
 * \test A negative test that checks the combined use of content and negated
 *        content with the use of within
 */
static int SigTest49TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:GET; content:!Host; within:26; sid:1;)", (uint8_t *)"GET /one/ HTTP/1.1\r\n Host: one.example.org\r\n\r\n\r\nGET /two/ HTTP/1.1\r\nHost: two.example.org\r\n\r\n\r\n");
}

/**
 * \test A positive test that checks the combined use of content and negated
 *        content with the use of distance
 */
static int SigTest50TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:GET; content:!GES; distance:25; sid:1;)", (uint8_t *)"GET /one/ HTTP/1.1\r\n Host: one.example.org\r\n\r\n\r\nGET /two/ HTTP/1.1\r\nHost: two.example.org\r\n\r\n\r\n");
}

/**
 * \test A negative test that checks the combined use of content and negated
 *       content with the use of distance
 *
 * First GET at offset 0
 * First Host at offset 21
 */
static int SigTest51TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:\"GET\"; content:!\"Host\"; distance:17; sid:1;)", (uint8_t *)"GET /one/ HTTP/1.1\r\nHost: one.example.org\r\n\r\n\r\nGET /two/ HTTP/1.1\r\nHost: two.example.org\r\n\r\n\r\n");
}

/**
 * \test A negative test that checks the combined use of content and negated
 *       content, with the content not being present
 */
static int SigTest52TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:GES; content:!BOO; sid:1;)", (uint8_t *)"GET /one/ HTTP/1.1\r\n Host: one.example.org\r\n\r\n\r\nGET /two/ HTTP/1.1\r\nHost: two.example.org\r\n\r\n\r\n");
}

/**
 * \test A negative test that checks the combined use of content and negated
 *       content, in the presence of within
 */
static int SigTest53TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; content:!fourty; within:56; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A positive test that checks the combined use of content and negated
 *       content, in the presence of within
 */
static int SigTest54TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; content:!fourty; within:20; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A negative test that checks the use of negated content along with
 *       the presence of depth
 */
static int SigTest55TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:!one; depth:5; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A positive test that checks the combined use of 2 contents in the
 *       presence of within
 */
static int SigTest56TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; content:fourty; within:56; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A negative test that checks the combined use of content and negated
 *       content, in the presence of within
 */
static int SigTest57TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; content:!fourty; within:56; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A positive test that checks the combined use of content and negated
 *       content, in the presence of distance
 */
static int SigTest58TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; content:!fourty; distance:57; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/**
 * \test A negative test that checks the combined use of content and negated
 *       content, in the presence of distance
 */
static int SigTest59TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; content:!fourty; distance:30; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest60TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:!one; content:fourty; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest61TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (content:one; depth:10; content:!fourty; within:30; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/** \test Test negation in combination with within and depth
 *
 *  Match of "one" at offset:0, depth:3
 *  Match of "fourty" at offset:46, depth:52
 *
 *  This signature should not match for the test to pass.
 */
static int SigTest62TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:one; depth:10; content:!fourty; within:49; depth:52; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest63TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; depth:10; content:!fourty; within:56; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest64TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (content:one; depth:10; content:!fourty; within:30; depth:30; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/** \test Test negation in combination with within and depth
 *
 *  Match of "one" at offset:0, depth:3
 *  Match of "fourty" at offset:46, depth:52
 *
 *  This signature should not match for the test to pass.
 */
static int SigTest65TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:one; depth:10; content:!fourty; distance:0; within:49; offset:46; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest66TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (content:one; depth:10; content:!fourty; within:30; offset:56; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest67TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:one; depth:10; content:!four; within:56; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest68TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (content:one; depth:10; content:nine; offset:8; content:!fourty; within:28; content:fiftysix; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest69TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:one; depth:10; content:nine; offset:8; content:!fourty; within:48; content:fiftysix; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest70TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:one; content:!fourty; within:52; distance:45 sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

/** \test within and distance */
static int SigTest71TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:one; content:!fourty; within:40; distance:43; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest72TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (content:one; content:!fourty; within:49; distance:43; sid:1;)", (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest73TestNegatedContent(void)
{
    return SigTestNegativeTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:one; depth:5; content:!twentythree; depth:35; sid:1;)",  (uint8_t *)"one four nine fourteen twentythree thirtyfive fourtysix fiftysix");
}

static int SigTest74TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:\"USER\"; content:!\"PASS\"; sid:1;)",  (uint8_t *)"USER apple");
}

static int SigTest75TestNegatedContent(void)
{
    return SigTestPositiveTestContent("alert tcp any any -> any any (msg:\"HTTP URI cap\"; content:\"USER\"; content:\"!PASS\"; sid:1;)",  (uint8_t *)"USER !PASS");
}

static int SigTest76TestBug134(void)
{
    uint8_t *buf = (uint8_t *)"test detect ${IFS} in traffic";
    uint16_t buflen = strlen((char *)buf);
    Packet *p = UTHBuildPacket( buf, buflen, IPPROTO_TCP);
    int result = 0;
    Flow f;

    memset(&f, 0, sizeof(Flow));
    FLOW_INITIALIZE(&f);

    p->dp = 515;
    p->flowflags |= FLOW_PKT_ESTABLISHED;
    p->flowflags |= FLOW_PKT_TOSERVER;
    p->flow = &f;

    char sig[] = "alert tcp any any -> any 515 "
            "(msg:\"detect IFS\"; flow:to_server,established; content:\"${IFS}\";"
            " depth:50; offset:0; sid:900091; rev:1;)";
    if (UTHPacketMatchSigMpm(p, sig, MPM_B2G) == 0) {
        result = 0;
        goto end;
    }

    result = 1;
end:
    if (p != NULL)
        UTHFreePacket(p);

    FLOW_DESTROY(&f);
    return result;
}

static int SigTest77TestBug139(void)
{
    uint8_t buf[] = {
        0x12, 0x23, 0x34, 0x35, 0x52, 0x52, 0x24, 0x42, 0x22, 0x24,
        0x52, 0x24, 0x82, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x34 };
    uint16_t buflen = sizeof(buf);
    Packet *p = UTHBuildPacket( buf, buflen, IPPROTO_UDP);
    int result = 0;

    p->dp = 53;
    char sig[] = "alert udp any any -> any 53 (msg:\"dns testing\";"
                    " content:\"|00 00|\"; depth:5; offset:13; sid:9436601;"
                    " rev:1;)";
    if (UTHPacketMatchSigMpm(p, sig, MPM_B2G) == 0) {
        result = 0;
        goto end;
    }

    result = 1;
end:
    if (p != NULL)
        UTHFreePacket(p);
    return result;
}
#endif /* UNITTESTS */

/**
 * \brief this function registers unit tests for DetectContent
 */
void DetectContentRegisterTests(void)
{
#ifdef UNITTESTS /* UNITTESTS */
    UtRegisterTest("DetectContentParseTest01", DetectContentParseTest01, 1);
    UtRegisterTest("DetectContentParseTest02", DetectContentParseTest02, 1);
    UtRegisterTest("DetectContentParseTest03", DetectContentParseTest03, 1);
    UtRegisterTest("DetectContentParseTest04", DetectContentParseTest04, 1);
    UtRegisterTest("DetectContentParseTest05", DetectContentParseTest05, 1);
    UtRegisterTest("DetectContentParseTest06", DetectContentParseTest06, 1);
    UtRegisterTest("DetectContentParseTest07", DetectContentParseTest07, 1);
    UtRegisterTest("DetectContentParseTest08", DetectContentParseTest08, 1);
    UtRegisterTest("DetectContentParseTest09", DetectContentParseTest09, 1);
    UtRegisterTest("DetectContentParseTest10", DetectContentParseTest10, 1);
    UtRegisterTest("DetectContentParseTest11", DetectContentParseNegTest11, 1);
    UtRegisterTest("DetectContentParseTest12", DetectContentParseNegTest12, 1);
    UtRegisterTest("DetectContentParseTest13", DetectContentParseNegTest13, 1);
    UtRegisterTest("DetectContentParseTest14", DetectContentParseNegTest14, 1);
    UtRegisterTest("DetectContentParseTest15", DetectContentParseNegTest15, 1);
    UtRegisterTest("DetectContentParseTest16", DetectContentParseNegTest16, 1);
    UtRegisterTest("DetectContentParseTest17", DetectContentParseTest17, 1);
    UtRegisterTest("DetectContentParseTest18", DetectContentParseTest18, 1);
    UtRegisterTest("DetectContentParseTest19", DetectContentParseTest19, 1);

    /* The reals */
    UtRegisterTest("DetectContentLongPatternMatchTest01", DetectContentLongPatternMatchTest01, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest02", DetectContentLongPatternMatchTest02, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest03", DetectContentLongPatternMatchTest03, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest04", DetectContentLongPatternMatchTest04, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest05", DetectContentLongPatternMatchTest05, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest06", DetectContentLongPatternMatchTest06, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest07", DetectContentLongPatternMatchTest07, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest08", DetectContentLongPatternMatchTest08, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest09", DetectContentLongPatternMatchTest09, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest10", DetectContentLongPatternMatchTest10, 1);
    UtRegisterTest("DetectContentLongPatternMatchTest11", DetectContentLongPatternMatchTest11, 1);

    /* Negated content tests */
    UtRegisterTest("SigTest41TestNegatedContent", SigTest41TestNegatedContent, 1);
    UtRegisterTest("SigTest42TestNegatedContent", SigTest42TestNegatedContent, 1);
    UtRegisterTest("SigTest43TestNegatedContent", SigTest43TestNegatedContent, 1);
    UtRegisterTest("SigTest44TestNegatedContent", SigTest44TestNegatedContent, 1);
    UtRegisterTest("SigTest45TestNegatedContent", SigTest45TestNegatedContent, 1);
    UtRegisterTest("SigTest46TestNegatedContent", SigTest46TestNegatedContent, 1);
    UtRegisterTest("SigTest47TestNegatedContent", SigTest47TestNegatedContent, 1);
    UtRegisterTest("SigTest48TestNegatedContent", SigTest48TestNegatedContent, 1);
    UtRegisterTest("SigTest49TestNegatedContent", SigTest49TestNegatedContent, 1);
    UtRegisterTest("SigTest50TestNegatedContent", SigTest50TestNegatedContent, 1);
    UtRegisterTest("SigTest51TestNegatedContent", SigTest51TestNegatedContent, 1);
    UtRegisterTest("SigTest52TestNegatedContent", SigTest52TestNegatedContent, 1);
    UtRegisterTest("SigTest53TestNegatedContent", SigTest53TestNegatedContent, 1);
    UtRegisterTest("SigTest54TestNegatedContent", SigTest54TestNegatedContent, 1);
    UtRegisterTest("SigTest55TestNegatedContent", SigTest55TestNegatedContent, 1);
    UtRegisterTest("SigTest56TestNegatedContent", SigTest56TestNegatedContent, 1);
    UtRegisterTest("SigTest57TestNegatedContent", SigTest57TestNegatedContent, 1);
    UtRegisterTest("SigTest58TestNegatedContent", SigTest58TestNegatedContent, 1);
    UtRegisterTest("SigTest59TestNegatedContent", SigTest59TestNegatedContent, 1);
    UtRegisterTest("SigTest60TestNegatedContent", SigTest60TestNegatedContent, 1);
    UtRegisterTest("SigTest61TestNegatedContent", SigTest61TestNegatedContent, 1);
    UtRegisterTest("SigTest62TestNegatedContent", SigTest62TestNegatedContent, 1);
    UtRegisterTest("SigTest63TestNegatedContent", SigTest63TestNegatedContent, 1);
    UtRegisterTest("SigTest64TestNegatedContent", SigTest64TestNegatedContent, 1);
    UtRegisterTest("SigTest65TestNegatedContent", SigTest65TestNegatedContent, 1);
    UtRegisterTest("SigTest66TestNegatedContent", SigTest66TestNegatedContent, 1);
    UtRegisterTest("SigTest67TestNegatedContent", SigTest67TestNegatedContent, 1);
    UtRegisterTest("SigTest68TestNegatedContent", SigTest68TestNegatedContent, 1);
    UtRegisterTest("SigTest69TestNegatedContent", SigTest69TestNegatedContent, 1);
    UtRegisterTest("SigTest70TestNegatedContent", SigTest70TestNegatedContent, 1);
    UtRegisterTest("SigTest71TestNegatedContent", SigTest71TestNegatedContent, 1);
    UtRegisterTest("SigTest72TestNegatedContent", SigTest72TestNegatedContent, 1);
    UtRegisterTest("SigTest73TestNegatedContent", SigTest73TestNegatedContent, 1);
    UtRegisterTest("SigTest74TestNegatedContent", SigTest74TestNegatedContent, 1);
    UtRegisterTest("SigTest75TestNegatedContent", SigTest75TestNegatedContent, 1);

    UtRegisterTest("SigTest76TestBug134", SigTest76TestBug134, 1);
    UtRegisterTest("SigTest77TestBug139", SigTest77TestBug139, 1);

#endif /* UNITTESTS */
}