mirror of https://github.com/OISF/suricata
Philippe Antoine
5 months ago
committed by
Victor Julien
parent
45a36e961f
commit
907e71a984
@ -1,172 +0,0 @@
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/* Copyright (C) 2021 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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*
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* Implements the quic.version
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*/
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#include "suricata-common.h"
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#include "conf.h"
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#include "detect.h"
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#include "detect-parse.h"
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#include "detect-engine.h"
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#include "detect-engine-buffer.h"
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#include "detect-engine-prefilter.h"
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#include "detect-engine-mpm.h"
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#include "detect-engine-content-inspection.h"
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#include "detect-engine-uint.h"
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#include "detect-quic-version.h"
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#include "util-byte.h"
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#include "util-unittest.h"
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#include "rust.h"
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#ifdef UNITTESTS
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static void DetectQuicVersionRegisterTests(void);
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#endif
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#define BUFFER_NAME "quic_version"
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#define KEYWORD_NAME "quic.version"
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static int quic_version_id = 0;
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static int DetectQuicVersionSetup(DetectEngineCtx *, Signature *, const char *);
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static InspectionBuffer *GetVersionData(DetectEngineThreadCtx *det_ctx,
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const DetectEngineTransforms *transforms, Flow *_f, const uint8_t _flow_flags, void *txv,
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const int list_id)
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{
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InspectionBuffer *buffer = InspectionBufferGet(det_ctx, list_id);
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if (buffer->inspect == NULL) {
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uint32_t b_len = 0;
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const uint8_t *b = NULL;
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if (SCQuicTxGetVersion(txv, &b, &b_len) != 1)
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return NULL;
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if (b == NULL || b_len == 0)
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return NULL;
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InspectionBufferSetupAndApplyTransforms(det_ctx, list_id, buffer, b, b_len, transforms);
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}
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return buffer;
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}
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/**
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* \brief Registration function for quic.version: keyword
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*/
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void DetectQuicVersionRegister(void)
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{
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sigmatch_table[DETECT_QUIC_VERSION].name = KEYWORD_NAME;
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sigmatch_table[DETECT_QUIC_VERSION].desc = "match Quic version";
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sigmatch_table[DETECT_QUIC_VERSION].url = "/rules/quic-keywords.html#quic-version";
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sigmatch_table[DETECT_QUIC_VERSION].Setup = DetectQuicVersionSetup;
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sigmatch_table[DETECT_QUIC_VERSION].flags |= SIGMATCH_NOOPT | SIGMATCH_INFO_STICKY_BUFFER;
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#ifdef UNITTESTS
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sigmatch_table[DETECT_QUIC_VERSION].RegisterTests = DetectQuicVersionRegisterTests;
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#endif
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DetectAppLayerMpmRegister(BUFFER_NAME, SIG_FLAG_TOSERVER, 2, PrefilterGenericMpmRegister,
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GetVersionData, ALPROTO_QUIC, 1);
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DetectAppLayerMpmRegister(BUFFER_NAME, SIG_FLAG_TOCLIENT, 2, PrefilterGenericMpmRegister,
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GetVersionData, ALPROTO_QUIC, 1);
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DetectAppLayerInspectEngineRegister(BUFFER_NAME, ALPROTO_QUIC, SIG_FLAG_TOSERVER, 1,
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DetectEngineInspectBufferGeneric, GetVersionData);
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DetectAppLayerInspectEngineRegister(BUFFER_NAME, ALPROTO_QUIC, SIG_FLAG_TOCLIENT, 1,
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DetectEngineInspectBufferGeneric, GetVersionData);
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quic_version_id = DetectBufferTypeGetByName(BUFFER_NAME);
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}
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/**
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* \internal
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* \brief this function is used to add the parsed sigmatch into the current signature
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*
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* \param de_ctx pointer to the Detection Engine Context
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* \param s pointer to the Current Signature
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* \param rawstr pointer to the user provided options
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*
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* \retval 0 on Success
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* \retval -1 on Failure
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*/
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static int DetectQuicVersionSetup(DetectEngineCtx *de_ctx, Signature *s, const char *rawstr)
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{
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if (SCDetectBufferSetActiveList(de_ctx, s, quic_version_id) < 0)
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return -1;
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if (SCDetectSignatureSetAppProto(s, ALPROTO_QUIC) < 0)
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return -1;
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return 0;
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}
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#ifdef UNITTESTS
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/**
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* \test QuicVersionTestParse01 is a test for a valid value
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*
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* \retval 1 on success
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* \retval 0 on failure
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*/
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static int QuicVersionTestParse01(void)
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{
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DetectEngineCtx *de_ctx = DetectEngineCtxInit();
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FAIL_IF_NULL(de_ctx);
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Signature *sig = DetectEngineAppendSig(
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de_ctx, "alert ip any any -> any any (quic.version; content:\"Q046\"; sid:1; rev:1;)");
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FAIL_IF_NULL(sig);
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sig = DetectEngineAppendSig(
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de_ctx, "alert ip any any -> any any (quic.version; content:\"|00|\"; sid:2; rev:1;)");
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FAIL_IF_NULL(sig);
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DetectEngineCtxFree(de_ctx);
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PASS;
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}
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/**
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* \test QuicVersionTestParse03 is a test for an invalid value
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*
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* \retval 1 on success
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* \retval 0 on failure
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*/
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static int QuicVersionTestParse03(void)
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{
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DetectEngineCtx *de_ctx = DetectEngineCtxInit();
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FAIL_IF_NULL(de_ctx);
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Signature *sig = DetectEngineAppendSig(
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de_ctx, "alert ip any any -> any any (quic.version:; sid:1; rev:1;)");
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FAIL_IF_NOT_NULL(sig);
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DetectEngineCtxFree(de_ctx);
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PASS;
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}
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/**
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* \brief this function registers unit tests for QuicVersion
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*/
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void DetectQuicVersionRegisterTests(void)
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{
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UtRegisterTest("QuicVersionTestParse01", QuicVersionTestParse01);
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UtRegisterTest("QuicVersionTestParse03", QuicVersionTestParse03);
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}
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#endif /* UNITTESTS */
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@ -1,28 +0,0 @@
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/* Copyright (C) 2021 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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*/
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#ifndef SURICATA_DETECT_QUIC_VERSION_H
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#define SURICATA_DETECT_QUIC_VERSION_H
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void DetectQuicVersionRegister(void);
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#endif /* SURICATA_DETECT_QUIC_VERSION_H */
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