mirror of https://github.com/OISF/suricata
Philippe Antoine
2 years ago
committed by
Victor Julien
parent
ae72376ebe
commit
16952d67e7
@ -1,127 +0,0 @@
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/* Copyright (C) 2022 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
|
||||
* 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
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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||||
*
|
||||
* 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
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* 02110-1301, USA.
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*/
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#include "suricata-common.h"
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#include "rust.h"
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#include "detect-dhcp-leasetime.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-prefilter.h"
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#include "detect-engine-uint.h"
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#include "detect-parse.h"
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static int g_buffer_id = 0;
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/**
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* \internal
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* \brief Function to match leasetime of a TX
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*
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* \param t Pointer to thread vars.
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* \param det_ctx Pointer to the pattern matcher thread.
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* \param f Pointer to the current flow.
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* \param flags Flags.
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* \param state App layer state.
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* \param s Pointer to the Signature.
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* \param m Pointer to the sigmatch that we will cast into
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* DetectU64Data.
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*
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* \retval 0 no match.
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* \retval 1 match.
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*/
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static int DetectDHCPLeaseTimeMatch(DetectEngineThreadCtx *det_ctx, Flow *f, uint8_t flags,
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void *state, void *txv, const Signature *s, const SigMatchCtx *ctx)
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{
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SCEnter();
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uint64_t leasetime;
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if (rs_dhcp_tx_get_leasetime(txv, &leasetime)) {
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const DetectU64Data *dd = (const DetectU64Data *)ctx;
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if (DetectU64Match(leasetime, dd)) {
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SCReturnInt(1);
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}
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}
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SCReturnInt(0);
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}
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/**
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* \internal
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* \brief Function to free memory associated with DetectU64Data.
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*
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* \param de_ptr Pointer to DetectU64Data.
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*/
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static void DetectDHCPLeaseTimeFree(DetectEngineCtx *de_ctx, void *ptr)
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{
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rs_detect_u64_free(ptr);
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}
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/**
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* \brief Function to add the parsed dhcp leasetime field 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 flags options.
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* \param type Defines if this is notBefore or notAfter.
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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 DetectDHCPLeaseTimeSetup(DetectEngineCtx *de_ctx, Signature *s, const char *rawstr)
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{
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if (DetectSignatureSetAppProto(s, ALPROTO_DHCP) != 0)
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return -1;
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DetectU64Data *dd = DetectU64Parse(rawstr);
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if (dd == NULL) {
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SCLogError("Parsing \'%s\' failed for %s", rawstr,
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sigmatch_table[DETECT_AL_DHCP_LEASETIME].name);
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return -1;
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}
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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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if (SigMatchAppendSMToList(
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de_ctx, s, DETECT_AL_DHCP_LEASETIME, (SigMatchCtx *)dd, g_buffer_id) == NULL) {
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goto error;
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}
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return 0;
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error:
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DetectDHCPLeaseTimeFree(de_ctx, dd);
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return -1;
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}
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/**
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* \brief Registration function for dhcp.procedure keyword.
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*/
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void DetectDHCPLeaseTimeRegister(void)
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{
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sigmatch_table[DETECT_AL_DHCP_LEASETIME].name = "dhcp.leasetime";
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sigmatch_table[DETECT_AL_DHCP_LEASETIME].desc = "match DHCP leasetime";
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sigmatch_table[DETECT_AL_DHCP_LEASETIME].url = "/rules/dhcp-keywords.html#dhcp-leasetime";
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sigmatch_table[DETECT_AL_DHCP_LEASETIME].AppLayerTxMatch = DetectDHCPLeaseTimeMatch;
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sigmatch_table[DETECT_AL_DHCP_LEASETIME].Setup = DetectDHCPLeaseTimeSetup;
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sigmatch_table[DETECT_AL_DHCP_LEASETIME].Free = DetectDHCPLeaseTimeFree;
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DetectAppLayerInspectEngineRegister("dhcp.leasetime", ALPROTO_DHCP, SIG_FLAG_TOSERVER, 0,
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DetectEngineInspectGenericList, NULL);
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DetectAppLayerInspectEngineRegister("dhcp.leasetime", ALPROTO_DHCP, SIG_FLAG_TOCLIENT, 0,
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DetectEngineInspectGenericList, NULL);
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g_buffer_id = DetectBufferTypeGetByName("dhcp.leasetime");
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}
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@ -1,23 +0,0 @@
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/* Copyright (C) 2022 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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#ifndef SURICATA_DETECT_DHCP_LEASETIME_H
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#define SURICATA_DETECT_DHCP_LEASETIME_H
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void DetectDHCPLeaseTimeRegister(void);
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#endif /* SURICATA_DETECT_DHCP_LEASETIME_H */
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@ -1,128 +0,0 @@
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/* Copyright (C) 2022 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
|
||||
* 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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#include "suricata-common.h"
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#include "rust.h"
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#include "detect-dhcp-rebinding-time.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-prefilter.h"
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#include "detect-engine-uint.h"
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#include "detect-parse.h"
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static int g_buffer_id = 0;
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/**
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* \internal
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* \brief Function to match rebinding time of a TX
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*
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* \param t Pointer to thread vars.
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* \param det_ctx Pointer to the pattern matcher thread.
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* \param f Pointer to the current flow.
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* \param flags Flags.
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* \param state App layer state.
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* \param s Pointer to the Signature.
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* \param m Pointer to the sigmatch that we will cast into
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* DetectU64Data.
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*
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* \retval 0 no match.
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* \retval 1 match.
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*/
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static int DetectDHCPRebindingTimeMatch(DetectEngineThreadCtx *det_ctx, Flow *f, uint8_t flags,
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void *state, void *txv, const Signature *s, const SigMatchCtx *ctx)
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{
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SCEnter();
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uint64_t res;
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if (rs_dhcp_tx_get_rebinding_time(txv, &res)) {
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const DetectU64Data *dd = (const DetectU64Data *)ctx;
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if (DetectU64Match(res, dd)) {
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SCReturnInt(1);
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}
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}
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SCReturnInt(0);
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}
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/**
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* \internal
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* \brief Function to free memory associated with DetectU64Data.
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*
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* \param de_ptr Pointer to DetectU64Data.
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*/
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static void DetectDHCPRebindingTimeFree(DetectEngineCtx *de_ctx, void *ptr)
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{
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rs_detect_u64_free(ptr);
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}
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/**
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* \brief Function to add the parsed dhcp rebinding time field 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 flags options.
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* \param type Defines if this is notBefore or notAfter.
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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 DetectDHCPRebindingTimeSetup(DetectEngineCtx *de_ctx, Signature *s, const char *rawstr)
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{
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if (DetectSignatureSetAppProto(s, ALPROTO_DHCP) != 0)
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return -1;
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DetectU64Data *dd = DetectU64Parse(rawstr);
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if (dd == NULL) {
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SCLogError("Parsing \'%s\' failed for %s", rawstr,
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sigmatch_table[DETECT_AL_DHCP_REBINDING_TIME].name);
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return -1;
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}
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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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if (SigMatchAppendSMToList(
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de_ctx, s, DETECT_AL_DHCP_REBINDING_TIME, (SigMatchCtx *)dd, g_buffer_id) == NULL) {
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goto error;
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}
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return 0;
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error:
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DetectDHCPRebindingTimeFree(de_ctx, dd);
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return -1;
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}
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/**
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* \brief Registration function for dhcp.procedure keyword.
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*/
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void DetectDHCPRebindingTimeRegister(void)
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{
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sigmatch_table[DETECT_AL_DHCP_REBINDING_TIME].name = "dhcp.rebinding_time";
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sigmatch_table[DETECT_AL_DHCP_REBINDING_TIME].desc = "match DHCP rebinding time";
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sigmatch_table[DETECT_AL_DHCP_REBINDING_TIME].url =
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"/rules/dhcp-keywords.html#dhcp-rebinding-time";
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sigmatch_table[DETECT_AL_DHCP_REBINDING_TIME].AppLayerTxMatch = DetectDHCPRebindingTimeMatch;
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sigmatch_table[DETECT_AL_DHCP_REBINDING_TIME].Setup = DetectDHCPRebindingTimeSetup;
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sigmatch_table[DETECT_AL_DHCP_REBINDING_TIME].Free = DetectDHCPRebindingTimeFree;
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DetectAppLayerInspectEngineRegister("dhcp.rebinding-time", ALPROTO_DHCP, SIG_FLAG_TOSERVER, 0,
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DetectEngineInspectGenericList, NULL);
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DetectAppLayerInspectEngineRegister("dhcp.rebinding-time", ALPROTO_DHCP, SIG_FLAG_TOCLIENT, 0,
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DetectEngineInspectGenericList, NULL);
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g_buffer_id = DetectBufferTypeGetByName("dhcp.rebinding-time");
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}
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@ -1,23 +0,0 @@
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/* Copyright (C) 2022 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
|
||||
* 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
|
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* 02110-1301, USA.
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*/
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#ifndef SURICATA_DETECT_DHCP_REBINDING_TIME_H
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#define SURICATA_DETECT_DHCP_REBINDING_TIME_H
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void DetectDHCPRebindingTimeRegister(void);
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#endif /* SURICATA_DETECT_DHCP_REBINDING_TIME_H */
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@ -1,127 +0,0 @@
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/* Copyright (C) 2022 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.
|
||||
*/
|
||||
|
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#include "suricata-common.h"
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#include "rust.h"
|
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#include "detect-dhcp-renewal-time.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-prefilter.h"
|
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#include "detect-engine-uint.h"
|
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#include "detect-parse.h"
|
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|
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static int g_buffer_id = 0;
|
||||
|
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/**
|
||||
* \internal
|
||||
* \brief Function to match renewal time of a TX
|
||||
*
|
||||
* \param t Pointer to thread vars.
|
||||
* \param det_ctx Pointer to the pattern matcher thread.
|
||||
* \param f Pointer to the current flow.
|
||||
* \param flags Flags.
|
||||
* \param state App layer state.
|
||||
* \param s Pointer to the Signature.
|
||||
* \param m Pointer to the sigmatch that we will cast into
|
||||
* DetectU64Data.
|
||||
*
|
||||
* \retval 0 no match.
|
||||
* \retval 1 match.
|
||||
*/
|
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static int DetectDHCPRenewalTimeMatch(DetectEngineThreadCtx *det_ctx, Flow *f, uint8_t flags,
|
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void *state, void *txv, const Signature *s, const SigMatchCtx *ctx)
|
||||
{
|
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SCEnter();
|
||||
|
||||
uint64_t res;
|
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if (rs_dhcp_tx_get_renewal_time(txv, &res)) {
|
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const DetectU64Data *dd = (const DetectU64Data *)ctx;
|
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if (DetectU64Match(res, dd)) {
|
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SCReturnInt(1);
|
||||
}
|
||||
}
|
||||
SCReturnInt(0);
|
||||
}
|
||||
|
||||
/**
|
||||
* \internal
|
||||
* \brief Function to free memory associated with DetectU64Data.
|
||||
*
|
||||
* \param de_ptr Pointer to DetectU64Data.
|
||||
*/
|
||||
static void DetectDHCPRenewalTimeFree(DetectEngineCtx *de_ctx, void *ptr)
|
||||
{
|
||||
rs_detect_u64_free(ptr);
|
||||
}
|
||||
|
||||
/**
|
||||
* \brief Function to add the parsed dhcp renewal time field into the current signature.
|
||||
*
|
||||
* \param de_ctx Pointer to the Detection Engine Context.
|
||||
* \param s Pointer to the Current Signature.
|
||||
* \param rawstr Pointer to the user provided flags options.
|
||||
* \param type Defines if this is notBefore or notAfter.
|
||||
*
|
||||
* \retval 0 on Success.
|
||||
* \retval -1 on Failure.
|
||||
*/
|
||||
static int DetectDHCPRenewalTimeSetup(DetectEngineCtx *de_ctx, Signature *s, const char *rawstr)
|
||||
{
|
||||
if (DetectSignatureSetAppProto(s, ALPROTO_DHCP) != 0)
|
||||
return -1;
|
||||
|
||||
DetectU64Data *dd = DetectU64Parse(rawstr);
|
||||
if (dd == NULL) {
|
||||
SCLogError("Parsing \'%s\' failed for %s", rawstr,
|
||||
sigmatch_table[DETECT_AL_DHCP_RENEWAL_TIME].name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* okay so far so good, lets get this into a SigMatch
|
||||
* and put it in the Signature. */
|
||||
|
||||
if (SigMatchAppendSMToList(
|
||||
de_ctx, s, DETECT_AL_DHCP_RENEWAL_TIME, (SigMatchCtx *)dd, g_buffer_id) == NULL) {
|
||||
goto error;
|
||||
}
|
||||
return 0;
|
||||
|
||||
error:
|
||||
DetectDHCPRenewalTimeFree(de_ctx, dd);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* \brief Registration function for dhcp.procedure keyword.
|
||||
*/
|
||||
void DetectDHCPRenewalTimeRegister(void)
|
||||
{
|
||||
sigmatch_table[DETECT_AL_DHCP_RENEWAL_TIME].name = "dhcp.renewal_time";
|
||||
sigmatch_table[DETECT_AL_DHCP_RENEWAL_TIME].desc = "match DHCP renewal time";
|
||||
sigmatch_table[DETECT_AL_DHCP_RENEWAL_TIME].url = "/rules/dhcp-keywords.html#dhcp-renewal-time";
|
||||
sigmatch_table[DETECT_AL_DHCP_RENEWAL_TIME].AppLayerTxMatch = DetectDHCPRenewalTimeMatch;
|
||||
sigmatch_table[DETECT_AL_DHCP_RENEWAL_TIME].Setup = DetectDHCPRenewalTimeSetup;
|
||||
sigmatch_table[DETECT_AL_DHCP_RENEWAL_TIME].Free = DetectDHCPRenewalTimeFree;
|
||||
|
||||
DetectAppLayerInspectEngineRegister("dhcp.renewal-time", ALPROTO_DHCP, SIG_FLAG_TOSERVER, 0,
|
||||
DetectEngineInspectGenericList, NULL);
|
||||
|
||||
DetectAppLayerInspectEngineRegister("dhcp.renewal-time", ALPROTO_DHCP, SIG_FLAG_TOCLIENT, 0,
|
||||
DetectEngineInspectGenericList, NULL);
|
||||
|
||||
g_buffer_id = DetectBufferTypeGetByName("dhcp.renewal-time");
|
||||
}
|
||||
@ -1,23 +0,0 @@
|
||||
/* Copyright (C) 2022 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.
|
||||
*/
|
||||
|
||||
#ifndef SURICATA_DETECT_DHCP_RENEWAL_TIME_H
|
||||
#define SURICATA_DETECT_DHCP_RENEWAL_TIME_H
|
||||
|
||||
void DetectDHCPRenewalTimeRegister(void);
|
||||
|
||||
#endif /* SURICATA_DETECT_DHCP_RENEWAL_TIME_H */
|
||||
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Reference in New Issue