Ejemplo n.º 1
0
static int DetectUrilenInitTest(DetectEngineCtx **de_ctx, Signature **sig,
                                DetectUrilenData **urilend, char *str)
{
    char fullstr[1024];
    int result = 0;

    *de_ctx = NULL;
    *sig = NULL;

    if (snprintf(fullstr, 1024, "alert ip any any -> any any (msg:\"Urilen "
                                "test\"; urilen:%s; sid:1;)", str) >= 1024) {
        goto end;
    }

    *de_ctx = DetectEngineCtxInit();
    if (*de_ctx == NULL) {
        goto end;
    }

    (*de_ctx)->flags |= DE_QUIET;

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

    *sig = (*de_ctx)->sig_list;

    *urilend = DetectUrilenParse(str);

    result = 1;

end:
    return result;
}
Ejemplo n.º 2
0
/**
 * \brief this function is used to parse urilen data into the current signature
 *
 * \param de_ctx pointer to the Detection Engine Context
 * \param s pointer to the Current Signature
 * \param urilenstr pointer to the user provided urilen options
 *
 * \retval 0 on Success
 * \retval -1 on Failure
 */
static int DetectUrilenSetup (DetectEngineCtx *de_ctx, Signature *s, char *urilenstr)
{
    SCEnter();
    DetectUrilenData *urilend = NULL;
    SigMatch *sm = NULL;

    urilend = DetectUrilenParse(urilenstr);
    if (urilend == NULL)
        goto error;

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

    sm->type = DETECT_AL_URILEN;
    sm->ctx = (void *)urilend;

    if (urilend->raw_buffer)
        SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_HRUDMATCH);
    else
        SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_UMATCH);

    /* Flagged the signature as to inspect the app layer data */
    s->flags |= SIG_FLAG_APPLAYER;

    SCReturnInt(0);

error:
    if (urilend != NULL) DetectUrilenFree(urilend);
    if (sm != NULL) SCFree(sm);
    SCReturnInt(-1);
}
Ejemplo n.º 3
0
/** \test   Test the Urilen keyword setup */
static int DetectUrilenParseTest10(void)
{
    int ret = 0;
    DetectUrilenData *urilend = NULL;

    urilend = DetectUrilenParse("<10, raw ");
    if (urilend != NULL) {
        if (urilend->urilen1 == 10 && urilend->mode == DETECT_URILEN_LT &&
            urilend->raw_buffer)
            ret = 1;

        DetectUrilenFree(urilend);
    }
    return ret;
}
Ejemplo n.º 4
0
/** \test   Test the Urilen keyword setup */
static int DetectUrilenParseTest05(void)
{
    int ret = 0;
    DetectUrilenData *urilend = NULL;

    urilend = DetectUrilenParse("5<>10,norm");
    if (urilend != NULL) {
        if (urilend->urilen1 == 5 && urilend->urilen2 == 10 &&
            urilend->mode == DETECT_URILEN_RA &&
            !urilend->raw_buffer)
            ret = 1;

        DetectUrilenFree(urilend);
    }
    return ret;
}
Ejemplo n.º 5
0
/**
 * \brief this function is used to parse urilen data into the current signature
 *
 * \param de_ctx pointer to the Detection Engine Context
 * \param s pointer to the Current Signature
 * \param urilenstr pointer to the user provided urilen options
 *
 * \retval 0 on Success
 * \retval -1 on Failure
 */
static int DetectUrilenSetup (DetectEngineCtx *de_ctx, Signature *s, char *urilenstr)
{
    SCEnter();
    DetectUrilenData *urilend = NULL;
    SigMatch *sm = NULL;

    if (s->alproto != ALPROTO_UNKNOWN && s->alproto != ALPROTO_HTTP) {
        SCLogError(SC_ERR_CONFLICTING_RULE_KEYWORDS, "rule contains a non http "
                   "alproto set");
        goto error;
    }

    urilend = DetectUrilenParse(urilenstr);
    if (urilend == NULL)
        goto error;
    sm = SigMatchAlloc();
    if (sm == NULL)
        goto error;
    sm->type = DETECT_AL_URILEN;
    sm->ctx = (void *)urilend;

    if (urilend->raw_buffer)
        SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_HRUDMATCH);
    else
        SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_UMATCH);

    /* Flagged the signature as to inspect the app layer data */
    s->flags |= SIG_FLAG_APPLAYER;
    s->alproto = ALPROTO_HTTP;

    SCReturnInt(0);

error:
    DetectUrilenFree(urilend);
    SCReturnInt(-1);
}