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suricata/src/detect-iprep.c

951 lines
27 KiB
C

/* Copyright (C) 2012-2021 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>
*
* Implements the iprep keyword
*/
#include "suricata-common.h"
#include "decode.h"
#include "detect.h"
#include "threads.h"
#include "flow.h"
#include "flow-bit.h"
#include "flow-util.h"
#include "detect-iprep.h"
#include "util-spm.h"
#include "app-layer-parser.h"
#include "detect-parse.h"
#include "detect-engine.h"
#include "detect-engine-mpm.h"
#include "detect-engine-state.h"
#include "detect-engine-uint.h"
#include "detect-engine-build.h"
#include "util-debug.h"
#include "util-byte.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "util-fmemopen.h"
#include "util-validate.h"
#include "reputation.h"
#include "host.h"
static int DetectIPRepMatch (DetectEngineThreadCtx *, Packet *,
const Signature *, const SigMatchCtx *);
static int DetectIPRepSetup (DetectEngineCtx *, Signature *, const char *);
void DetectIPRepFree (DetectEngineCtx *, void *);
#ifdef UNITTESTS
static void IPRepRegisterTests(void);
#endif
void DetectIPRepRegister (void)
{
sigmatch_table[DETECT_IPREP].name = "iprep";
sigmatch_table[DETECT_IPREP].desc = "match on the IP reputation information for a host";
sigmatch_table[DETECT_IPREP].url = "/rules/ip-reputation-rules.html#iprep";
sigmatch_table[DETECT_IPREP].Match = DetectIPRepMatch;
sigmatch_table[DETECT_IPREP].Setup = DetectIPRepSetup;
sigmatch_table[DETECT_IPREP].Free = DetectIPRepFree;
#ifdef UNITTESTS
sigmatch_table[DETECT_IPREP].RegisterTests = IPRepRegisterTests;
#endif
/* this is compatible to ip-only signatures */
sigmatch_table[DETECT_IPREP].flags |= SIGMATCH_IPONLY_COMPAT;
}
static inline int8_t GetRep(const SReputation *r, const uint8_t cat, const uint32_t version)
{
/* allow higher versions as this happens during
* rule reload */
if (r != NULL && r->version >= version) {
return r->rep[cat];
}
return -1;
}
/** \returns: -2 no host, -1 no rep entry, 0-127 rep values */
static int8_t GetHostRepSrc(Packet *p, uint8_t cat, uint32_t version)
{
if (p->flags & PKT_HOST_SRC_LOOKED_UP && p->host_src == NULL) {
return -2;
} else if (p->host_src != NULL) {
Host *h = (Host *)p->host_src;
HostLock(h);
/* use_cnt: 1 for having iprep, 1 for packet ref */
DEBUG_VALIDATE_BUG_ON(h->iprep != NULL && SC_ATOMIC_GET(h->use_cnt) < 2);
int8_t val = GetRep(h->iprep, cat, version);
HostUnlock(h);
return val;
} else {
Host *h = HostLookupHostFromHash(&(p->src));
p->flags |= PKT_HOST_SRC_LOOKED_UP;
if (h == NULL)
return -2;
HostReference(&p->host_src, h);
/* use_cnt: 1 for having iprep, 1 for HostLookupHostFromHash,
* 1 for HostReference to packet */
DEBUG_VALIDATE_BUG_ON(h->iprep != NULL && SC_ATOMIC_GET(h->use_cnt) < 3);
int8_t val = GetRep(h->iprep, cat, version);
HostRelease(h); /* use_cnt >= 2: 1 for iprep, 1 for packet ref */
return val;
}
}
static int8_t GetHostRepDst(Packet *p, uint8_t cat, uint32_t version)
{
if (p->flags & PKT_HOST_DST_LOOKED_UP && p->host_dst == NULL) {
return -2;
} else if (p->host_dst != NULL) {
Host *h = (Host *)p->host_dst;
HostLock(h);
/* use_cnt: 1 for having iprep, 1 for packet ref */
DEBUG_VALIDATE_BUG_ON(h->iprep != NULL && SC_ATOMIC_GET(h->use_cnt) < 2);
int8_t val = GetRep(h->iprep, cat, version);
HostUnlock(h);
return val;
} else {
Host *h = HostLookupHostFromHash(&(p->dst));
p->flags |= PKT_HOST_DST_LOOKED_UP;
if (h == NULL)
return -2;
HostReference(&p->host_dst, h);
/* use_cnt: 1 for having iprep, 1 for HostLookupHostFromHash,
* 1 for HostReference to packet */
DEBUG_VALIDATE_BUG_ON(h->iprep != NULL && SC_ATOMIC_GET(h->use_cnt) < 3);
int8_t val = GetRep(h->iprep, cat, version);
HostRelease(h); /* use_cnt >= 2: 1 for iprep, 1 for packet ref */
return val;
}
}
/*
* returns 0: no match
* 1: match
* -1: error
*/
static int DetectIPRepMatch (DetectEngineThreadCtx *det_ctx, Packet *p,
const Signature *s, const SigMatchCtx *ctx)
{
const DetectIPRepData *rd = (const DetectIPRepData *)ctx;
if (rd == NULL)
return 0;
uint32_t version = det_ctx->de_ctx->srep_version;
int8_t val = 0;
SCLogDebug("rd->cmd %u", rd->cmd);
switch (rd->cmd) {
case IPRepCmdAny:
if (!rd->isnotset) {
val = GetHostRepSrc(p, rd->cat, version);
if (val < 0)
val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val >= 0) {
if (DetectU8Match((uint8_t)val, &rd->du8))
return 1;
}
val = GetHostRepDst(p, rd->cat, version);
if (val < 0)
val = SRepCIDRGetIPRepDst(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val >= 0) {
return DetectU8Match((uint8_t)val, &rd->du8);
}
} else {
/* isnotset for any */
val = GetHostRepSrc(p, rd->cat, version);
if (val < 0)
val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val < 0) {
return 1;
}
val = GetHostRepDst(p, rd->cat, version);
if (val < 0)
val = SRepCIDRGetIPRepDst(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val < 0) {
return 1;
}
/* both have a value, so none 'isnotset' */
return 0;
}
break;
case IPRepCmdSrc:
val = GetHostRepSrc(p, rd->cat, version);
SCLogDebug("checking src -- val %d (looking for cat %u, val %u)", val, rd->cat,
rd->du8.arg1);
if (val < 0)
val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val >= 0) {
return DetectU8Match((uint8_t)val, &rd->du8);
}
/* implied: no value found */
if (rd->isnotset) {
return 1;
}
break;
case IPRepCmdDst:
SCLogDebug("checking dst");
val = GetHostRepDst(p, rd->cat, version);
if (val < 0)
val = SRepCIDRGetIPRepDst(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val >= 0) {
return DetectU8Match((uint8_t)val, &rd->du8);
}
/* implied: no value found */
if (rd->isnotset) {
return 1;
}
break;
case IPRepCmdBoth:
if (!rd->isnotset) {
val = GetHostRepSrc(p, rd->cat, version);
if (val < 0)
val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val < 0 || DetectU8Match((uint8_t)val, &rd->du8) == 0)
return 0;
val = GetHostRepDst(p, rd->cat, version);
if (val < 0)
val = SRepCIDRGetIPRepDst(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val >= 0) {
return DetectU8Match((uint8_t)val, &rd->du8);
}
} else {
val = GetHostRepSrc(p, rd->cat, version);
if (val >= 0)
return 0;
val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val >= 0)
return 0;
val = GetHostRepDst(p, rd->cat, version);
if (val >= 0)
return 0;
val = SRepCIDRGetIPRepDst(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
if (val >= 0)
return 0;
return 1;
}
break;
}
return 0;
}
int DetectIPRepSetup (DetectEngineCtx *de_ctx, Signature *s, const char *rawstr)
{
DetectIPRepData *cd = SCDetectIPRepParse(rawstr);
if (cd == NULL) {
SCLogError("\"%s\" is not a valid setting for iprep", rawstr);
goto error;
}
SCLogDebug("cmd %u, cat %u, op %u, val %u", cd->cmd, cd->cat, cd->du8.mode, cd->du8.arg1);
/* Okay so far so good, lets get this into a SigMatch
* and put it in the Signature. */
if (SigMatchAppendSMToList(de_ctx, s, DETECT_IPREP, (SigMatchCtx *)cd, DETECT_SM_LIST_MATCH) ==
NULL) {
goto error;
}
return 0;
error:
if (cd != NULL)
DetectIPRepFree(de_ctx, cd);
return -1;
}
void DetectIPRepFree (DetectEngineCtx *de_ctx, void *ptr)
{
DetectIPRepData *fd = (DetectIPRepData *)ptr;
if (fd == NULL)
return;
SCDetectIPRepFree(fd);
}
#ifdef UNITTESTS
#include "packet.h"
#include "action-globals.h"
static FILE *DetectIPRepGenerateCategoriesDummy(void)
{
FILE *fd = NULL;
const char *buffer = "1,BadHosts,Know bad hosts";
fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
if (fd == NULL)
SCLogDebug("Error with SCFmemopen()");
return fd;
}
static FILE *DetectIPRepGenerateCategoriesDummy2(void)
{
FILE *fd = NULL;
const char *buffer =
"1,BadHosts,Know bad hosts\n"
"2,GoodHosts,Know good hosts\n";
fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
if (fd == NULL)
SCLogDebug("Error with SCFmemopen()");
return fd;
}
static FILE *DetectIPRepGenerateNetworksDummy(void)
{
FILE *fd = NULL;
const char *buffer = "10.0.0.0/24,1,20";
fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
if (fd == NULL)
SCLogDebug("Error with SCFmemopen()");
return fd;
}
static FILE *DetectIPRepGenerateNetworksDummy2(void)
{
FILE *fd = NULL;
const char *buffer =
"0.0.0.0/0,1,10\n"
"192.168.0.0/16,2,127";
fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
if (fd == NULL)
SCLogDebug("Error with SCFmemopen()");
return fd;
}
static int DetectIPRepTest01(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("10.0.0.1");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value "
"badhost\"; iprep:any,BadHosts,>,1; sid:1;rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 1);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest02(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("10.0.0.1");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value "
"badhost\"; iprep:src,BadHosts,>,1; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 1);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest03(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->dst.addr_data32[0] = UTHSetIPv4Address("10.0.0.2");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value "
"badhost\"; iprep:dst,BadHosts,>,1; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 1);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest04(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("10.0.0.1");
p->dst.addr_data32[0] = UTHSetIPv4Address("10.0.0.2");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value "
"badhost\"; iprep:both,BadHosts,>,1; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 1);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest05(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("1.0.0.1");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value "
"badhost\"; iprep:any,BadHosts,>,1; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 0);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest06(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("1.0.0.1");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy2();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value "
"badhost\"; iprep:any,BadHosts,>,1; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 1);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest07(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->dst.addr_data32[0] = UTHSetIPv4Address("1.0.0.2");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy2();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value "
"badhost\"; iprep:any,BadHosts,>,1; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 1);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest08(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("1.0.0.1");
p->dst.addr_data32[0] = UTHSetIPv4Address("1.0.0.2");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value "
"badhost\"; iprep:any,BadHosts,>,1; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 0);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest09(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("192.168.0.1");
p->dst.addr_data32[0] = UTHSetIPv4Address("192.168.0.2");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy2();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy2();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx,
"alert tcp any any -> any any (msg:\"test\"; iprep:src,BadHosts,>,9; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
p->alerts.cnt = 0;
p->action = 0;
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF(p->alerts.cnt != 1);
FAIL_IF(PacketTestAction(p, ACTION_DROP));
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static FILE *DetectIPRepGenerateNetworksDummy3(void)
{
FILE *fd = NULL;
const char *buffer = "192.168.0.0/16,1,127"; // BadHosts
fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
if (fd == NULL)
SCLogDebug("Error with SCFmemopen()");
return fd;
}
static int DetectIPRepTest10(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("192.168.0.1");
p->dst.addr_data32[0] = UTHSetIPv4Address("192.168.0.2");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy2();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy3();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx,
"alert tcp any any -> any any (msg:\"test\"; iprep:src,BadHosts,isset; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF_NOT(p->alerts.cnt == 1);
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
static int DetectIPRepTest11(void)
{
ThreadVars th_v;
DetectEngineThreadCtx *det_ctx = NULL;
Signature *sig = NULL;
FILE *fd = NULL;
int r = 0;
Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
HostInitConfig(HOST_QUIET);
memset(&th_v, 0, sizeof(th_v));
FAIL_IF_NULL(de_ctx);
FAIL_IF_NULL(p);
p->src.addr_data32[0] = UTHSetIPv4Address("10.0.0.1");
p->dst.addr_data32[0] = UTHSetIPv4Address("10.0.0.2");
de_ctx->flags |= DE_QUIET;
SRepInit(de_ctx);
SRepResetVersion();
fd = DetectIPRepGenerateCategoriesDummy2();
r = SRepLoadCatFileFromFD(fd);
FAIL_IF(r < 0);
fd = DetectIPRepGenerateNetworksDummy3();
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
FAIL_IF(r < 0);
sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (msg:\"test\"; "
"iprep:src,BadHosts,isnotset; sid:1; rev:1;)");
FAIL_IF_NULL(sig);
SigGroupBuild(de_ctx);
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
FAIL_IF_NOT(p->alerts.cnt == 1);
UTHFreePacket(p);
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
DetectEngineCtxFree(de_ctx);
HostShutdown();
PASS;
}
/**
* \brief this function registers unit tests for IPRep
*/
void IPRepRegisterTests(void)
{
UtRegisterTest("DetectIPRepTest01", DetectIPRepTest01);
UtRegisterTest("DetectIPRepTest02", DetectIPRepTest02);
UtRegisterTest("DetectIPRepTest03", DetectIPRepTest03);
UtRegisterTest("DetectIPRepTest04", DetectIPRepTest04);
UtRegisterTest("DetectIPRepTest05", DetectIPRepTest05);
UtRegisterTest("DetectIPRepTest06", DetectIPRepTest06);
UtRegisterTest("DetectIPRepTest07", DetectIPRepTest07);
UtRegisterTest("DetectIPRepTest08", DetectIPRepTest08);
UtRegisterTest("DetectIPRepTest09", DetectIPRepTest09);
UtRegisterTest("DetectIPRepTest10 -- isset", DetectIPRepTest10);
UtRegisterTest("DetectIPRepTest11 -- isnotset", DetectIPRepTest11);
}
#endif /* UNITTESTS */