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/* Copyright (C) 2007-2018 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.
*/
#include "../util-unittest.h"
#include "../util-unittest-helper.h"
#include "detect-engine.h"
#include "detect-engine-alert.h"
#include "detect-engine-build.h"
/**
* \test DetectTtlParseTest01 is a test for setting up an valid ttl value.
*/
static int DetectTtlParseTest01 (void)
{
DetectU8Data *ttld = DetectU8Parse("10");
FAIL_IF_NULL(ttld);
FAIL_IF_NOT(ttld->arg1 == 10);
FAIL_IF_NOT(ttld->mode == DETECT_UINT_EQ);
DetectTtlFree(NULL, ttld);
PASS;
}
/**
* \test DetectTtlParseTest02 is a test for setting up an valid ttl value with
* "<" operator.
*/
static int DetectTtlParseTest02 (void)
{
DetectU8Data *ttld = DetectU8Parse("<10");
FAIL_IF_NULL(ttld);
FAIL_IF_NOT(ttld->arg1 == 10);
FAIL_IF_NOT(ttld->mode == DETECT_UINT_LT);
DetectTtlFree(NULL, ttld);
PASS;
}
/**
* \test DetectTtlParseTest03 is a test for setting up an valid ttl values with
* "-" operator.
*/
static int DetectTtlParseTest03 (void)
{
DetectU8Data *ttld = DetectU8Parse("1-3");
FAIL_IF_NULL(ttld);
FAIL_IF_NOT(ttld->arg1 == 1);
FAIL_IF_NOT(ttld->arg2 == 3);
FAIL_IF_NOT(ttld->mode == DETECT_UINT_RA);
DetectTtlFree(NULL, ttld);
PASS;
}
/**
* \test DetectTtlParseTest04 is a test for setting up an valid ttl value with
* ">" operator and include spaces arround the given values.
*/
static int DetectTtlParseTest04 (void)
{
DetectU8Data *ttld = DetectU8Parse(" > 10 ");
FAIL_IF_NULL(ttld);
FAIL_IF_NOT(ttld->arg1 == 10);
FAIL_IF_NOT(ttld->mode == DETECT_UINT_GT);
DetectTtlFree(NULL, ttld);
PASS;
}
/**
* \test DetectTtlParseTest05 is a test for setting up an valid ttl values with
* "-" operator and include spaces arround the given values.
*/
static int DetectTtlParseTest05 (void)
{
DetectU8Data *ttld = DetectU8Parse(" 1 - 3 ");
FAIL_IF_NULL(ttld);
FAIL_IF_NOT(ttld->arg1 == 1);
FAIL_IF_NOT(ttld->arg2 == 3);
FAIL_IF_NOT(ttld->mode == DETECT_UINT_RA);
DetectTtlFree(NULL, ttld);
PASS;
}
/**
* \test DetectTtlParseTest06 is a test for setting up an valid ttl values with
* invalid "=" operator and include spaces arround the given values.
*/
static int DetectTtlParseTest06 (void)
{
DetectU8Data *ttld = DetectU8Parse(" 1 = 2 ");
FAIL_IF_NOT_NULL(ttld);
PASS;
}
/**
* \test DetectTtlParseTest07 is a test for setting up an valid ttl values with
* invalid "<>" operator and include spaces arround the given values.
*/
static int DetectTtlParseTest07 (void)
{
DetectU8Data *ttld = DetectU8Parse(" 1<>2 ");
FAIL_IF_NOT_NULL(ttld);
PASS;
}
/**
* \test DetectTtlSetupTest01 is a test for setting up an valid ttl values with
* valid "-" operator and include spaces arround the given values. In the
* test the values are setup with initializing the detection engine context
* setting up the signature itself.
*/
static int DetectTtlSetupTest01(void)
{
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->flags |= DE_QUIET;
Signature *s = DetectEngineAppendSig(
de_ctx, "alert ip any any -> any any (msg:\"with in ttl limit\"; ttl:1 - 3; sid:1;)");
FAIL_IF_NULL(s);
SigGroupBuild(de_ctx);
FAIL_IF_NULL(s->sm_arrays[DETECT_SM_LIST_MATCH]);
FAIL_IF_NULL(s->sm_arrays[DETECT_SM_LIST_MATCH]->ctx);
DetectU8Data *ttld = (DetectU8Data *)s->sm_arrays[DETECT_SM_LIST_MATCH]->ctx;
FAIL_IF_NOT(ttld->arg1 == 1);
FAIL_IF_NOT(ttld->arg2 == 3);
FAIL_IF_NOT(ttld->mode == DETECT_UINT_RA);
DetectEngineCtxFree(de_ctx);
PASS;
}
/**
* \test DetectTtlTestSig01 is a test for checking the working of ttl keyword
* by setting up the signature and later testing its working by matching
* the received packet against the sig.
*/
static int DetectTtlTestSig1(void)
{
Packet *p = PacketGetFromAlloc();
FAIL_IF_NULL(p);
Signature *s = NULL;
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx;
IPV4Hdr ip4h;
memset(&th_v, 0, sizeof(th_v));
memset(&ip4h, 0, sizeof(ip4h));
p->src.family = AF_INET;
p->dst.family = AF_INET;
p->proto = IPPROTO_TCP;
ip4h.ip_ttl = 15;
p->ip4h = &ip4h;
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->flags |= DE_QUIET;
s = DetectEngineAppendSig(de_ctx,"alert ip any any -> any any (msg:\"with in ttl limit\"; ttl: >16; sid:1;)");
FAIL_IF_NULL(s);
s = DetectEngineAppendSig(de_ctx,"alert ip any any -> any any (msg:\"Less than 17\"; ttl: <17; sid:2;)");
FAIL_IF_NULL(s);
s = DetectEngineAppendSig(de_ctx,"alert ip any any -> any any (msg:\"Greater than 5\"; ttl:15; sid:3;)");
FAIL_IF_NULL(s);
s = DetectEngineAppendSig(de_ctx,"alert ip any any -> any any (msg:\"Equals tcp\"; ttl: 1-30; sid:4;)");
FAIL_IF_NULL(s);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(PacketAlertCheck(p, 1));
FAIL_IF_NOT(PacketAlertCheck(p, 2));
FAIL_IF_NOT(PacketAlertCheck(p, 3));
FAIL_IF_NOT(PacketAlertCheck(p, 4));
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
SCFree(p);
PASS;
}
/**
* \brief this function registers unit tests for DetectTtl
*/
void DetectTtlRegisterTests(void)
{
UtRegisterTest("DetectTtlParseTest01", DetectTtlParseTest01);
UtRegisterTest("DetectTtlParseTest02", DetectTtlParseTest02);
UtRegisterTest("DetectTtlParseTest03", DetectTtlParseTest03);
UtRegisterTest("DetectTtlParseTest04", DetectTtlParseTest04);
UtRegisterTest("DetectTtlParseTest05", DetectTtlParseTest05);
UtRegisterTest("DetectTtlParseTest06", DetectTtlParseTest06);
UtRegisterTest("DetectTtlParseTest07", DetectTtlParseTest07);
UtRegisterTest("DetectTtlSetupTest01", DetectTtlSetupTest01);
UtRegisterTest("DetectTtlTestSig1", DetectTtlTestSig1);
}
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