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1012 lines
26 KiB
C
1012 lines
26 KiB
C
/* Copyright (C) 2012 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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*
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* Implements the iprep keyword
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*/
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#include "suricata-common.h"
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#include "decode.h"
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#include "detect.h"
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#include "threads.h"
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#include "flow.h"
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#include "flow-bit.h"
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#include "flow-util.h"
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#include "detect-iprep.h"
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#include "util-spm.h"
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#include "app-layer-parser.h"
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#include "detect-parse.h"
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#include "detect-engine.h"
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#include "detect-engine-mpm.h"
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#include "detect-engine-state.h"
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#include "util-debug.h"
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#include "util-unittest.h"
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#include "util-unittest-helper.h"
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#include "util-fmemopen.h"
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#include "reputation.h"
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#include "host.h"
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#define PARSE_REGEX "\\s*(any|src|dst|both)\\s*,\\s*([A-Za-z0-9\\-\\_]+)\\s*,\\s*(\\<|\\>|\\=)\\s*,\\s*([0-9]+)\\s*"
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static pcre *parse_regex;
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static pcre_extra *parse_regex_study;
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static int DetectIPRepMatch (ThreadVars *, DetectEngineThreadCtx *, Packet *,
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const Signature *, const SigMatchCtx *);
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static int DetectIPRepSetup (DetectEngineCtx *, Signature *, char *);
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void DetectIPRepFree (void *);
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void IPRepRegisterTests(void);
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void DetectIPRepRegister (void)
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{
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sigmatch_table[DETECT_IPREP].name = "iprep";
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sigmatch_table[DETECT_IPREP].Match = DetectIPRepMatch;
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sigmatch_table[DETECT_IPREP].Setup = DetectIPRepSetup;
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sigmatch_table[DETECT_IPREP].Free = DetectIPRepFree;
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sigmatch_table[DETECT_IPREP].RegisterTests = IPRepRegisterTests;
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/* this is compatible to ip-only signatures */
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sigmatch_table[DETECT_IPREP].flags |= SIGMATCH_IPONLY_COMPAT;
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DetectSetupParseRegexes(PARSE_REGEX, &parse_regex, &parse_regex_study);
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}
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static uint8_t GetHostRepSrc(Packet *p, uint8_t cat, uint32_t version)
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{
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uint8_t val = 0;
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Host *h = NULL;
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if (p->flags & PKT_HOST_SRC_LOOKED_UP && p->host_src == NULL) {
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return 0;
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} else if (p->host_src != NULL) {
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h = (Host *)p->host_src;
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HostLock(h);
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} else {
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h = HostLookupHostFromHash(&(p->src));
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p->flags |= PKT_HOST_SRC_LOOKED_UP;
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if (h == NULL)
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return 0;
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HostReference(&p->host_src, h);
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}
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if (h->iprep == NULL) {
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HostRelease(h);
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return 0;
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}
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SReputation *r = (SReputation *)h->iprep;
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/* allow higher versions as this happens during
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* rule reload */
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if (r->version >= version)
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val = r->rep[cat];
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else
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SCLogDebug("version mismatch %u != %u", r->version, version);
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HostRelease(h);
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return val;
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}
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static uint8_t GetHostRepDst(Packet *p, uint8_t cat, uint32_t version)
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{
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uint8_t val = 0;
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Host *h = NULL;
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if (p->flags & PKT_HOST_DST_LOOKED_UP && p->host_dst == NULL) {
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return 0;
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} else if (p->host_dst != NULL) {
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h = (Host *)p->host_dst;
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HostLock(h);
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} else {
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h = HostLookupHostFromHash(&(p->dst));
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p->flags |= PKT_HOST_DST_LOOKED_UP;
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if (h == NULL) {
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return 0;
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}
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HostReference(&p->host_dst, h);
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}
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if (h->iprep == NULL) {
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HostRelease(h);
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return 0;
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}
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SReputation *r = (SReputation *)h->iprep;
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/* allow higher versions as this happens during
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* rule reload */
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if (r->version >= version)
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val = r->rep[cat];
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else
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SCLogDebug("version mismatch %u != %u", r->version, version);
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HostRelease(h);
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return val;
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}
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static inline int RepMatch(uint8_t op, uint8_t val1, uint8_t val2)
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{
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if (op == DETECT_IPREP_OP_GT && val1 > val2) {
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return 1;
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} else if (op == DETECT_IPREP_OP_LT && val1 < val2) {
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return 1;
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} else if (op == DETECT_IPREP_OP_EQ && val1 == val2) {
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return 1;
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}
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return 0;
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}
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/*
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* returns 0: no match
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* 1: match
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* -1: error
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*/
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static int DetectIPRepMatch (ThreadVars *t, DetectEngineThreadCtx *det_ctx, Packet *p,
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const Signature *s, const SigMatchCtx *ctx)
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{
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const DetectIPRepData *rd = (const DetectIPRepData *)ctx;
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if (rd == NULL)
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return 0;
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uint32_t version = det_ctx->de_ctx->srep_version;
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uint8_t val = 0;
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SCLogDebug("rd->cmd %u", rd->cmd);
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switch(rd->cmd) {
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case DETECT_IPREP_CMD_ANY:
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val = GetHostRepSrc(p, rd->cat, version);
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if (val == 0)
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val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
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if (val > 0) {
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if (RepMatch(rd->op, val, rd->val) == 1)
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return 1;
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}
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val = GetHostRepDst(p, rd->cat, version);
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if (val == 0)
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val = SRepCIDRGetIPRepDst(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
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if (val > 0) {
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return RepMatch(rd->op, val, rd->val);
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}
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break;
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case DETECT_IPREP_CMD_SRC:
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val = GetHostRepSrc(p, rd->cat, version);
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SCLogDebug("checking src -- val %u (looking for cat %u, val %u)", val, rd->cat, rd->val);
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if (val == 0)
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val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
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if (val > 0) {
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return RepMatch(rd->op, val, rd->val);
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}
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break;
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case DETECT_IPREP_CMD_DST:
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SCLogDebug("checking dst");
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val = GetHostRepDst(p, rd->cat, version);
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if (val == 0)
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val = SRepCIDRGetIPRepDst(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
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if (val > 0) {
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return RepMatch(rd->op, val, rd->val);
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}
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break;
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case DETECT_IPREP_CMD_BOTH:
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val = GetHostRepSrc(p, rd->cat, version);
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if (val == 0)
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val = SRepCIDRGetIPRepSrc(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
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if (val == 0 || RepMatch(rd->op, val, rd->val) == 0)
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return 0;
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val = GetHostRepDst(p, rd->cat, version);
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if (val == 0)
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val = SRepCIDRGetIPRepDst(det_ctx->de_ctx->srepCIDR_ctx, p, rd->cat, version);
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if (val > 0) {
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return RepMatch(rd->op, val, rd->val);
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}
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break;
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}
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return 0;
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}
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int DetectIPRepSetup (DetectEngineCtx *de_ctx, Signature *s, char *rawstr)
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{
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DetectIPRepData *cd = NULL;
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SigMatch *sm = NULL;
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char *cmd_str = NULL, *name = NULL, *op_str = NULL, *value = NULL;
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uint8_t cmd = 0;
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#define MAX_SUBSTRINGS 30
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int ret = 0, res = 0;
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int ov[MAX_SUBSTRINGS];
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ret = pcre_exec(parse_regex, parse_regex_study, rawstr, strlen(rawstr), 0, 0, ov, MAX_SUBSTRINGS);
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if (ret != 5) {
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SCLogError(SC_ERR_PCRE_MATCH, "\"%s\" is not a valid setting for iprep", rawstr);
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return -1;
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}
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const char *str_ptr;
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res = pcre_get_substring((char *)rawstr, ov, MAX_SUBSTRINGS, 1, &str_ptr);
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if (res < 0) {
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SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed");
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return -1;
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}
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cmd_str = (char *)str_ptr;
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res = pcre_get_substring((char *)rawstr, ov, MAX_SUBSTRINGS, 2, &str_ptr);
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if (res < 0) {
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SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed");
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goto error;
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}
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name = (char *)str_ptr;
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res = pcre_get_substring((char *)rawstr, ov, MAX_SUBSTRINGS, 3, &str_ptr);
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if (res < 0) {
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SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed");
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goto error;
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}
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op_str = (char *)str_ptr;
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res = pcre_get_substring((char *)rawstr, ov, MAX_SUBSTRINGS, 4, &str_ptr);
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if (res < 0) {
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SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed");
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goto error;
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}
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value = (char *)str_ptr;
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if (strcmp(cmd_str,"any") == 0) {
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cmd = DETECT_IPREP_CMD_ANY;
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} else if (strcmp(cmd_str,"both") == 0) {
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cmd = DETECT_IPREP_CMD_BOTH;
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} else if (strcmp(cmd_str,"src") == 0) {
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cmd = DETECT_IPREP_CMD_SRC;
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} else if (strcmp(cmd_str,"dst") == 0) {
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cmd = DETECT_IPREP_CMD_DST;
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} else {
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SCLogError(SC_ERR_UNKNOWN_VALUE, "ERROR: iprep \"%s\" is not supported.", cmd_str);
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goto error;
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}
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//SCLogInfo("category %s", name);
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uint8_t cat = SRepCatGetByShortname(name);
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if (cat == 0) {
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SCLogError(SC_ERR_UNKNOWN_VALUE, "unknown iprep category \"%s\"", name);
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goto error;
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}
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uint8_t op = 0;
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uint8_t val = 0;
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if (op_str == NULL || strlen(op_str) != 1) {
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goto error;
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}
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switch(op_str[0]) {
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case '<':
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op = DETECT_IPREP_OP_LT;
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break;
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case '>':
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op = DETECT_IPREP_OP_GT;
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break;
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case '=':
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op = DETECT_IPREP_OP_EQ;
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break;
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default:
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goto error;
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break;
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}
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if (value != NULL && strlen(value) > 0) {
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int ival = atoi(value);
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if (ival < 0 || ival > 127)
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goto error;
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val = (uint8_t)ival;
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}
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cd = SCMalloc(sizeof(DetectIPRepData));
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if (unlikely(cd == NULL))
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goto error;
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cd->cmd = cmd;
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cd->cat = cat;
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cd->op = op;
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cd->val = val;
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SCLogDebug("cmd %u, cat %u, op %u, val %u", cd->cmd, cd->cat, cd->op, cd->val);
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pcre_free_substring(name);
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name = NULL;
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pcre_free_substring(cmd_str);
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cmd_str = NULL;
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/* Okay so far so good, lets get this into a SigMatch
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* and put it in the Signature. */
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sm = SigMatchAlloc();
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if (sm == NULL)
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goto error;
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sm->type = DETECT_IPREP;
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sm->ctx = (SigMatchCtx *)cd;
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SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
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return 0;
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error:
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if (name != NULL)
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pcre_free_substring(name);
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if (cmd_str != NULL)
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pcre_free_substring(cmd_str);
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if (cd != NULL)
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SCFree(cd);
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if (sm != NULL)
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SCFree(sm);
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return -1;
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}
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void DetectIPRepFree (void *ptr)
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{
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DetectIPRepData *fd = (DetectIPRepData *)ptr;
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if (fd == NULL)
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return;
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SCFree(fd);
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}
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#ifdef UNITTESTS
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FILE *DetectIPRepGenerateCategoriesDummy()
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{
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FILE *fd = NULL;
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const char *buffer = "1,BadHosts,Know bad hosts";
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fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
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if (fd == NULL)
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SCLogDebug("Error with SCFmemopen()");
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return fd;
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}
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FILE *DetectIPRepGenerateCategoriesDummy2()
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{
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FILE *fd = NULL;
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const char *buffer =
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"1,BadHosts,Know bad hosts\n"
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"2,GoodHosts,Know good hosts\n";
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fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
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if (fd == NULL)
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SCLogDebug("Error with SCFmemopen()");
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return fd;
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}
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FILE *DetectIPRepGenerateNetworksDummy()
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{
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FILE *fd = NULL;
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const char *buffer = "10.0.0.0/24,1,20";
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fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
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if (fd == NULL)
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SCLogDebug("Error with SCFmemopen()");
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return fd;
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}
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FILE *DetectIPRepGenerateNetworksDummy2()
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{
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FILE *fd = NULL;
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const char *buffer =
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"0.0.0.0/0,1,10\n"
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"192.168.0.0/16,2,127";
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fd = SCFmemopen((void *)buffer, strlen(buffer), "r");
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if (fd == NULL)
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SCLogDebug("Error with SCFmemopen()");
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|
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return fd;
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}
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|
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static int DetectIPRepTest01(void)
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{
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ThreadVars th_v;
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DetectEngineThreadCtx *det_ctx = NULL;
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Signature *sig = NULL;
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FILE *fd = NULL;
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int result = 0, r = 0;
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Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
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DetectEngineCtx *de_ctx = DetectEngineCtxInit();
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|
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HostInitConfig(HOST_QUIET);
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memset(&th_v, 0, sizeof(th_v));
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|
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if (de_ctx == NULL || p == NULL)
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goto end;
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|
|
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p->src.addr_data32[0] = UTHSetIPv4Address("10.0.0.1");
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de_ctx->flags |= DE_QUIET;
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|
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SRepInit(de_ctx);
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SRepResetVersion();
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|
|
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fd = DetectIPRepGenerateCategoriesDummy();
|
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r = SRepLoadCatFileFromFD(fd);
|
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if (r < 0) {
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goto end;
|
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}
|
|
|
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fd = DetectIPRepGenerateNetworksDummy();
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r = SRepLoadFileFromFD(de_ctx->srepCIDR_ctx, fd);
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if (r < 0) {
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goto end;
|
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}
|
|
|
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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;)");
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if (sig == NULL) {
|
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goto end;
|
|
}
|
|
|
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SigGroupBuild(de_ctx);
|
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DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
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|
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p->alerts.cnt = 0;
|
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p->action = 0;
|
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SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
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if (p->alerts.cnt != 1 || PACKET_TEST_ACTION(p, ACTION_DROP)) {
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goto end;
|
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}
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|
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result = 1;
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end:
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UTHFreePacket(p);
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SigGroupCleanup(de_ctx);
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SigCleanSignatures(de_ctx);
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|
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DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
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DetectEngineCtxFree(de_ctx);
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|
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HostShutdown();
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return result;
|
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}
|
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|
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static int DetectIPRepTest02(void)
|
|
{
|
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ThreadVars th_v;
|
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DetectEngineThreadCtx *det_ctx = NULL;
|
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Signature *sig = NULL;
|
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FILE *fd = NULL;
|
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int result = 0, r = 0;
|
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Packet *p = UTHBuildPacket((uint8_t *)"lalala", 6, IPPROTO_TCP);
|
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DetectEngineCtx *de_ctx = DetectEngineCtxInit();
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|
|
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HostInitConfig(HOST_QUIET);
|
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memset(&th_v, 0, sizeof(th_v));
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|
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if (de_ctx == NULL || p == NULL)
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goto end;
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|
|
|
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 */
|
|
}
|