mirror of https://github.com/OISF/suricata
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1020 lines
26 KiB
C
1020 lines
26 KiB
C
/* Copyright (C) 2012 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 "util-debug.h"
|
|
#include "util-unittest.h"
|
|
#include "util-unittest-helper.h"
|
|
#include "util-fmemopen.h"
|
|
|
|
#include "reputation.h"
|
|
#include "host.h"
|
|
|
|
#define PARSE_REGEX "\\s*(any|src|dst|both)\\s*,\\s*([A-Za-z0-9\\-\\_]+)\\s*,\\s*(\\<|\\>|\\=)\\s*,\\s*([0-9]+)\\s*"
|
|
static pcre *parse_regex;
|
|
static pcre_extra *parse_regex_study;
|
|
|
|
static int DetectIPRepMatch (ThreadVars *, DetectEngineThreadCtx *, Packet *,
|
|
const Signature *, const SigMatchCtx *);
|
|
static int DetectIPRepSetup (DetectEngineCtx *, Signature *, const char *);
|
|
void DetectIPRepFree (void *);
|
|
void IPRepRegisterTests(void);
|
|
|
|
void DetectIPRepRegister (void)
|
|
{
|
|
sigmatch_table[DETECT_IPREP].name = "iprep";
|
|
sigmatch_table[DETECT_IPREP].Match = DetectIPRepMatch;
|
|
sigmatch_table[DETECT_IPREP].Setup = DetectIPRepSetup;
|
|
sigmatch_table[DETECT_IPREP].Free = DetectIPRepFree;
|
|
sigmatch_table[DETECT_IPREP].RegisterTests = IPRepRegisterTests;
|
|
/* this is compatible to ip-only signatures */
|
|
sigmatch_table[DETECT_IPREP].flags |= SIGMATCH_IPONLY_COMPAT;
|
|
|
|
DetectSetupParseRegexes(PARSE_REGEX, &parse_regex, &parse_regex_study);
|
|
}
|
|
|
|
static uint8_t GetHostRepSrc(Packet *p, uint8_t cat, uint32_t version)
|
|
{
|
|
uint8_t val = 0;
|
|
Host *h = NULL;
|
|
|
|
if (p->flags & PKT_HOST_SRC_LOOKED_UP && p->host_src == NULL) {
|
|
return 0;
|
|
} else if (p->host_src != NULL) {
|
|
h = (Host *)p->host_src;
|
|
HostLock(h);
|
|
} else {
|
|
h = HostLookupHostFromHash(&(p->src));
|
|
|
|
p->flags |= PKT_HOST_SRC_LOOKED_UP;
|
|
|
|
if (h == NULL)
|
|
return 0;
|
|
|
|
HostReference(&p->host_src, h);
|
|
}
|
|
|
|
if (h->iprep == NULL) {
|
|
HostRelease(h);
|
|
return 0;
|
|
}
|
|
|
|
SReputation *r = (SReputation *)h->iprep;
|
|
|
|
/* allow higher versions as this happens during
|
|
* rule reload */
|
|
if (r->version >= version)
|
|
val = r->rep[cat];
|
|
else
|
|
SCLogDebug("version mismatch %u != %u", r->version, version);
|
|
|
|
HostRelease(h);
|
|
return val;
|
|
}
|
|
|
|
static uint8_t GetHostRepDst(Packet *p, uint8_t cat, uint32_t version)
|
|
{
|
|
uint8_t val = 0;
|
|
Host *h = NULL;
|
|
|
|
if (p->flags & PKT_HOST_DST_LOOKED_UP && p->host_dst == NULL) {
|
|
return 0;
|
|
} else if (p->host_dst != NULL) {
|
|
h = (Host *)p->host_dst;
|
|
HostLock(h);
|
|
} else {
|
|
h = HostLookupHostFromHash(&(p->dst));
|
|
|
|
p->flags |= PKT_HOST_DST_LOOKED_UP;
|
|
|
|
if (h == NULL) {
|
|
return 0;
|
|
}
|
|
|
|
HostReference(&p->host_dst, h);
|
|
}
|
|
|
|
if (h->iprep == NULL) {
|
|
HostRelease(h);
|
|
return 0;
|
|
}
|
|
|
|
SReputation *r = (SReputation *)h->iprep;
|
|
|
|
/* allow higher versions as this happens during
|
|
* rule reload */
|
|
if (r->version >= version)
|
|
val = r->rep[cat];
|
|
else
|
|
SCLogDebug("version mismatch %u != %u", r->version, version);
|
|
|
|
HostRelease(h);
|
|
return val;
|
|
}
|
|
|
|
static inline int RepMatch(uint8_t op, uint8_t val1, uint8_t val2)
|
|
{
|
|
if (op == DETECT_IPREP_OP_GT && val1 > val2) {
|
|
return 1;
|
|
} else if (op == DETECT_IPREP_OP_LT && val1 < val2) {
|
|
return 1;
|
|
} else if (op == DETECT_IPREP_OP_EQ && val1 == val2) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* returns 0: no match
|
|
* 1: match
|
|
* -1: error
|
|
*/
|
|
static int DetectIPRepMatch (ThreadVars *t, 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;
|
|
uint8_t val = 0;
|
|
|
|
SCLogDebug("rd->cmd %u", rd->cmd);
|
|
switch(rd->cmd) {
|
|
case DETECT_IPREP_CMD_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) {
|
|
if (RepMatch(rd->op, val, rd->val) == 1)
|
|
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 RepMatch(rd->op, val, rd->val);
|
|
}
|
|
break;
|
|
|
|
case DETECT_IPREP_CMD_SRC:
|
|
val = GetHostRepSrc(p, rd->cat, version);
|
|
SCLogDebug("checking src -- val %u (looking for cat %u, val %u)", val, rd->cat, rd->val);
|
|
if (val == 0)
|
|
val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
|
|
if (val > 0) {
|
|
return RepMatch(rd->op, val, rd->val);
|
|
}
|
|
break;
|
|
|
|
case DETECT_IPREP_CMD_DST:
|
|
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 RepMatch(rd->op, val, rd->val);
|
|
}
|
|
break;
|
|
|
|
case DETECT_IPREP_CMD_BOTH:
|
|
val = GetHostRepSrc(p, rd->cat, version);
|
|
if (val == 0)
|
|
val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
|
|
if (val == 0 || RepMatch(rd->op, val, rd->val) == 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 RepMatch(rd->op, val, rd->val);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int DetectIPRepSetup (DetectEngineCtx *de_ctx, Signature *s, const char *rawstr)
|
|
{
|
|
DetectIPRepData *cd = NULL;
|
|
SigMatch *sm = NULL;
|
|
char *cmd_str = NULL, *name = NULL, *op_str = NULL, *value = NULL;
|
|
uint8_t cmd = 0;
|
|
#define MAX_SUBSTRINGS 30
|
|
int ret = 0, res = 0;
|
|
int ov[MAX_SUBSTRINGS];
|
|
|
|
ret = pcre_exec(parse_regex, parse_regex_study, rawstr, strlen(rawstr), 0, 0, ov, MAX_SUBSTRINGS);
|
|
if (ret != 5) {
|
|
SCLogError(SC_ERR_PCRE_MATCH, "\"%s\" is not a valid setting for iprep", rawstr);
|
|
return -1;
|
|
}
|
|
|
|
const char *str_ptr;
|
|
res = pcre_get_substring((char *)rawstr, ov, MAX_SUBSTRINGS, 1, &str_ptr);
|
|
if (res < 0) {
|
|
SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed");
|
|
return -1;
|
|
}
|
|
cmd_str = (char *)str_ptr;
|
|
|
|
res = pcre_get_substring((char *)rawstr, ov, MAX_SUBSTRINGS, 2, &str_ptr);
|
|
if (res < 0) {
|
|
SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed");
|
|
goto error;
|
|
}
|
|
name = (char *)str_ptr;
|
|
|
|
res = pcre_get_substring((char *)rawstr, ov, MAX_SUBSTRINGS, 3, &str_ptr);
|
|
if (res < 0) {
|
|
SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed");
|
|
goto error;
|
|
}
|
|
op_str = (char *)str_ptr;
|
|
|
|
res = pcre_get_substring((char *)rawstr, ov, MAX_SUBSTRINGS, 4, &str_ptr);
|
|
if (res < 0) {
|
|
SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed");
|
|
goto error;
|
|
}
|
|
value = (char *)str_ptr;
|
|
|
|
if (strcmp(cmd_str,"any") == 0) {
|
|
cmd = DETECT_IPREP_CMD_ANY;
|
|
} else if (strcmp(cmd_str,"both") == 0) {
|
|
cmd = DETECT_IPREP_CMD_BOTH;
|
|
} else if (strcmp(cmd_str,"src") == 0) {
|
|
cmd = DETECT_IPREP_CMD_SRC;
|
|
} else if (strcmp(cmd_str,"dst") == 0) {
|
|
cmd = DETECT_IPREP_CMD_DST;
|
|
} else {
|
|
SCLogError(SC_ERR_UNKNOWN_VALUE, "ERROR: iprep \"%s\" is not supported.", cmd_str);
|
|
goto error;
|
|
}
|
|
|
|
//SCLogInfo("category %s", name);
|
|
uint8_t cat = SRepCatGetByShortname(name);
|
|
if (cat == 0) {
|
|
SCLogError(SC_ERR_UNKNOWN_VALUE, "unknown iprep category \"%s\"", name);
|
|
goto error;
|
|
}
|
|
|
|
uint8_t op = 0;
|
|
uint8_t val = 0;
|
|
|
|
if (op_str == NULL || strlen(op_str) != 1) {
|
|
goto error;
|
|
}
|
|
|
|
switch(op_str[0]) {
|
|
case '<':
|
|
op = DETECT_IPREP_OP_LT;
|
|
break;
|
|
case '>':
|
|
op = DETECT_IPREP_OP_GT;
|
|
break;
|
|
case '=':
|
|
op = DETECT_IPREP_OP_EQ;
|
|
break;
|
|
default:
|
|
goto error;
|
|
break;
|
|
}
|
|
|
|
if (value != NULL && strlen(value) > 0) {
|
|
int ival = atoi(value);
|
|
if (ival < 0 || ival > 127)
|
|
goto error;
|
|
val = (uint8_t)ival;
|
|
}
|
|
|
|
cd = SCMalloc(sizeof(DetectIPRepData));
|
|
if (unlikely(cd == NULL))
|
|
goto error;
|
|
|
|
cd->cmd = cmd;
|
|
cd->cat = cat;
|
|
cd->op = op;
|
|
cd->val = val;
|
|
SCLogDebug("cmd %u, cat %u, op %u, val %u", cd->cmd, cd->cat, cd->op, cd->val);
|
|
|
|
pcre_free_substring(name);
|
|
name = NULL;
|
|
pcre_free_substring(cmd_str);
|
|
cmd_str = NULL;
|
|
pcre_free_substring(op_str);
|
|
op_str = NULL;
|
|
pcre_free_substring(value);
|
|
value = NULL;
|
|
|
|
/* Okay so far so good, lets get this into a SigMatch
|
|
* and put it in the Signature. */
|
|
sm = SigMatchAlloc();
|
|
if (sm == NULL)
|
|
goto error;
|
|
|
|
sm->type = DETECT_IPREP;
|
|
sm->ctx = (SigMatchCtx *)cd;
|
|
|
|
SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
if (name != NULL)
|
|
pcre_free_substring(name);
|
|
if (cmd_str != NULL)
|
|
pcre_free_substring(cmd_str);
|
|
if (op_str != NULL)
|
|
pcre_free_substring(op_str);
|
|
if (value != NULL)
|
|
pcre_free_substring(value);
|
|
if (cd != NULL)
|
|
SCFree(cd);
|
|
if (sm != NULL)
|
|
SCFree(sm);
|
|
return -1;
|
|
}
|
|
|
|
void DetectIPRepFree (void *ptr)
|
|
{
|
|
DetectIPRepData *fd = (DetectIPRepData *)ptr;
|
|
|
|
if (fd == NULL)
|
|
return;
|
|
|
|
SCFree(fd);
|
|
}
|
|
|
|
#ifdef UNITTESTS
|
|
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 result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
p->src.addr_data32[0] = UTHSetIPv4Address("10.0.0.1");
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
SRepInit(de_ctx);
|
|
SRepResetVersion();
|
|
|
|
fd = DetectIPRepGenerateCategoriesDummy();
|
|
r = SRepLoadCatFileFromFD(fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value badhost\"; iprep:any,BadHosts,>,1; sid:1;rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result;
|
|
}
|
|
|
|
static int DetectIPRepTest02(void)
|
|
{
|
|
ThreadVars th_v;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
Signature *sig = NULL;
|
|
FILE *fd = NULL;
|
|
int result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
p->src.addr_data32[0] = UTHSetIPv4Address("10.0.0.1");
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
SRepInit(de_ctx);
|
|
SRepResetVersion();
|
|
|
|
fd = DetectIPRepGenerateCategoriesDummy();
|
|
r = SRepLoadCatFileFromFD(fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value badhost\"; iprep:src,BadHosts,>,1; sid:1; rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result;
|
|
}
|
|
|
|
static int DetectIPRepTest03(void)
|
|
{
|
|
ThreadVars th_v;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
Signature *sig = NULL;
|
|
FILE *fd = NULL;
|
|
int result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
p->dst.addr_data32[0] = UTHSetIPv4Address("10.0.0.2");
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
SRepInit(de_ctx);
|
|
SRepResetVersion();
|
|
|
|
fd = DetectIPRepGenerateCategoriesDummy();
|
|
r = SRepLoadCatFileFromFD(fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value badhost\"; iprep:dst,BadHosts,>,1; sid:1; rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result;
|
|
}
|
|
|
|
static int DetectIPRepTest04(void)
|
|
{
|
|
ThreadVars th_v;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
Signature *sig = NULL;
|
|
FILE *fd = NULL;
|
|
int result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
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);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value badhost\"; iprep:both,BadHosts,>,1; sid:1; rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result;
|
|
}
|
|
|
|
static int DetectIPRepTest05(void)
|
|
{
|
|
ThreadVars th_v;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
Signature *sig = NULL;
|
|
FILE *fd = NULL;
|
|
int result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
p->src.addr_data32[0] = UTHSetIPv4Address("1.0.0.1");
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
SRepInit(de_ctx);
|
|
SRepResetVersion();
|
|
|
|
fd = DetectIPRepGenerateCategoriesDummy();
|
|
r = SRepLoadCatFileFromFD(fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value badhost\"; iprep:any,BadHosts,>,1; sid:1; rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result == 0;
|
|
}
|
|
|
|
static int DetectIPRepTest06(void)
|
|
{
|
|
ThreadVars th_v;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
Signature *sig = NULL;
|
|
FILE *fd = NULL;
|
|
int result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
p->src.addr_data32[0] = UTHSetIPv4Address("1.0.0.1");
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
SRepInit(de_ctx);
|
|
SRepResetVersion();
|
|
|
|
fd = DetectIPRepGenerateCategoriesDummy();
|
|
r = SRepLoadCatFileFromFD(fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value badhost\"; iprep:any,BadHosts,>,1; sid:1; rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result == 0;
|
|
}
|
|
|
|
static int DetectIPRepTest07(void)
|
|
{
|
|
ThreadVars th_v;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
Signature *sig = NULL;
|
|
FILE *fd = NULL;
|
|
int result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
p->dst.addr_data32[0] = UTHSetIPv4Address("1.0.0.2");
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
SRepInit(de_ctx);
|
|
SRepResetVersion();
|
|
|
|
fd = DetectIPRepGenerateCategoriesDummy();
|
|
r = SRepLoadCatFileFromFD(fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value badhost\"; iprep:any,BadHosts,>,1; sid:1; rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result == 0;
|
|
}
|
|
|
|
static int DetectIPRepTest08(void)
|
|
{
|
|
ThreadVars th_v;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
Signature *sig = NULL;
|
|
FILE *fd = NULL;
|
|
int result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
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);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"IPREP High value badhost\"; iprep:any,BadHosts,>,1; sid:1; rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result == 0;
|
|
}
|
|
|
|
static int DetectIPRepTest09(void)
|
|
{
|
|
ThreadVars th_v;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
Signature *sig = NULL;
|
|
FILE *fd = NULL;
|
|
int result = 0, 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));
|
|
|
|
if (de_ctx == NULL || p == NULL)
|
|
goto end;
|
|
|
|
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);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
fd = DetectIPRepGenerateNetworksDummy2();
|
|
r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
|
|
if (r < 0) {
|
|
goto end;
|
|
}
|
|
|
|
sig = de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any (msg:\"test\"; iprep:src,BadHosts,>,9; sid:1; rev:1;)");
|
|
if (sig == NULL) {
|
|
goto end;
|
|
}
|
|
|
|
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);
|
|
if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
end:
|
|
UTHFreePacket(p);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
HostShutdown();
|
|
return result;
|
|
}
|
|
#endif /* UNITTESTS */
|
|
|
|
/**
|
|
* \brief this function registers unit tests for IPRep
|
|
*/
|
|
void IPRepRegisterTests(void)
|
|
{
|
|
#ifdef UNITTESTS
|
|
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);
|
|
#endif /* UNITTESTS */
|
|
}
|