mirror of https://github.com/OISF/suricata
libsuricata: add library runmode
Add library source and runmode modules. Reorganized library example to create a worker thread and replay a pcap file using the library mode. No API layer is added at this stage. Edits by Jason Ish: - fix guard - add copyright/license headers Ticket: #7240pull/12891/head
Angelo Mirabella
1 year ago
committed by
Victor Julien
parent
d8c6a56a62
commit
ee9714e593
@ -1,12 +1,16 @@
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LIBSURICATA_CONFIG ?= @CONFIGURE_PREFIX@/bin/libsuricata-config
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LIBSURICATA_CONFIG ?= @CONFIGURE_PREFIX@/bin/libsuricata-config
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SURICATA_LIBS = `$(LIBSURICATA_CONFIG) --libs`
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SURICATA_LIBS = `$(LIBSURICATA_CONFIG) --libs --static`
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SURICATA_CFLAGS := `$(LIBSURICATA_CONFIG) --cflags`
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SURICATA_CFLAGS := `$(LIBSURICATA_CONFIG) --cflags`
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# Currently the Suricata logging system requires this to be even for
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# plugins.
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CPPFLAGS += "-D__SCFILENAME__=\"$(*F)\""
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all: simple
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all: simple
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simple: main.c
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simple: main.c
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$(CC) -o $@ $^ $(CFLAGS) $(SURICATA_CFLAGS) $(SURICATA_LIBS)
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$(CC) -o $@ $^ $(CPPFLAGS) $(CFLAGS) $(SURICATA_CFLAGS) $(SURICATA_LIBS)
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clean:
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clean:
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rm -f simple
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rm -f simple
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@ -0,0 +1,154 @@
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/* Copyright (C) 2023-2024 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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/** \file
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*
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* \author Angelo Mirabella <angelo.mirabella@broadcom.com>
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*
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* Library runmode.
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*/
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#include "suricata-common.h"
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#include "runmode-lib.h"
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#include "runmodes.h"
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#include "tm-threads.h"
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#include "util-device.h"
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static int g_thread_id = 0;
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/** \brief register runmodes for suricata as a library */
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void RunModeIdsLibRegister(void)
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{
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RunModeRegisterNewRunMode(RUNMODE_LIB, "offline", "Library offline mode (pcap replaying)",
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RunModeIdsLibOffline, NULL);
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RunModeRegisterNewRunMode(RUNMODE_LIB, "live", "Library live mode", RunModeIdsLibLive, NULL);
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return;
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}
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/** \brief runmode for offline packet processing (pcap files) */
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int RunModeIdsLibOffline(void)
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{
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TimeModeSetOffline();
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return 0;
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}
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/** \brief runmode for live packet processing */
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int RunModeIdsLibLive(void)
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{
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TimeModeSetLive();
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return 0;
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}
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const char *RunModeLibGetDefaultMode(void)
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{
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return "live";
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}
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/** \brief create a "fake" worker thread in charge of processing the packets.
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*
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* This method just creates a context representing the worker, which is handled from the library
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* client. No actual thread (pthread_t) is created.
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*
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* \return Pointer to ThreadVars structure representing the worker thread */
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void *RunModeCreateWorker(void)
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{
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char tname[TM_THREAD_NAME_MAX];
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TmModule *tm_module = NULL;
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snprintf(tname, sizeof(tname), "%s#%02d", thread_name_workers, ++g_thread_id);
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ThreadVars *tv = TmThreadCreatePacketHandler(
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tname, "packetpool", "packetpool", "packetpool", "packetpool", "lib");
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if (tv == NULL) {
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SCLogError("TmThreadsCreate failed");
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return NULL;
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}
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tm_module = TmModuleGetByName("DecodeLib");
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if (tm_module == NULL) {
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SCLogError("TmModuleGetByName DecodeLib failed");
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return NULL;
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}
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TmSlotSetFuncAppend(tv, tm_module, NULL);
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tm_module = TmModuleGetByName("FlowWorker");
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if (tm_module == NULL) {
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SCLogError("TmModuleGetByName for FlowWorker failed");
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return NULL;
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}
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TmSlotSetFuncAppend(tv, tm_module, NULL);
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TmThreadAppend(tv, tv->type);
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return tv;
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}
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/** \brief start the "fake" worker.
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*
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* This method performs all the initialization tasks.
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*/
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int RunModeSpawnWorker(void *td)
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{
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ThreadVars *tv = (ThreadVars *)td;
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if (TmThreadLibSpawn(tv) != TM_ECODE_OK) {
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SCLogError("TmThreadLibSpawn failed");
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return -1;
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}
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TmThreadsSetFlag(tv, THV_RUNNING);
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return 0;
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}
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/** \brief destroy a worker thread */
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void RunModeDestroyWorker(void *td)
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{
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ThreadVars *tv = (ThreadVars *)td;
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TmSlot *s = tv->tm_slots;
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TmEcode r;
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TmSlot *slot = NULL;
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StatsSyncCounters(tv);
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TmThreadsSetFlag(tv, THV_FLOW_LOOP);
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/* process all pseudo packets the flow timeout may throw at us */
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TmThreadTimeoutLoop(tv, s);
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TmThreadsSetFlag(tv, THV_RUNNING_DONE);
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TmThreadWaitForFlag(tv, THV_DEINIT);
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PacketPoolDestroy();
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for (slot = s; slot != NULL; slot = slot->slot_next) {
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if (slot->SlotThreadExitPrintStats != NULL) {
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slot->SlotThreadExitPrintStats(tv, SC_ATOMIC_GET(slot->slot_data));
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}
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if (slot->SlotThreadDeinit != NULL) {
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r = slot->SlotThreadDeinit(tv, SC_ATOMIC_GET(slot->slot_data));
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if (r != TM_ECODE_OK) {
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break;
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}
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}
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}
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tv->stream_pq = NULL;
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--g_thread_id;
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SCLogDebug("%s ending", tv->name);
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TmThreadsSetFlag(tv, THV_CLOSED);
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}
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@ -0,0 +1,57 @@
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/* Copyright (C) 2023-2024 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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/** \file
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*
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* \author Angelo Mirabella <angelo.mirabella@broadcom.com>
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*
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* Library runmode.
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*/
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#ifndef SURICATA_RUNMODE_LIB_H
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#define SURICATA_RUNMODE_LIB_H
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/** \brief register runmodes for suricata as a library */
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void RunModeIdsLibRegister(void);
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/** \brief runmode for live packet processing */
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int RunModeIdsLibLive(void);
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/** \brief runmode for offline packet processing (pcap files) */
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int RunModeIdsLibOffline(void);
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/** \brief runmode default mode (live) */
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const char *RunModeLibGetDefaultMode(void);
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/** \brief create a "fake" worker thread in charge of processing the packets.
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*
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* This method just creates a context representing the worker, which is handled from the library
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* client. No actual thread (pthread_t) is created.
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*
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* \return Pointer to ThreadVars structure representing the worker thread */
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void *RunModeCreateWorker(void);
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/** \brief start the "fake" worker.
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*
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* This method performs all the initialization tasks.
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*/
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int RunModeSpawnWorker(void *);
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/** \brief destroy a worker thread */
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void RunModeDestroyWorker(void *);
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#endif /* SURICATA_RUNMODE_LIB_H */
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@ -0,0 +1,180 @@
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/* Copyright (C) 2023-2024 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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/** \file
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*
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* \author Angelo Mirabella <angelo.mirabella@broadcom.com>
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*
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* LIB packet and stream decoding support
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*
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*/
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#include "suricata-common.h"
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#include "source-lib.h"
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#include "util-device.h"
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static TmEcode DecodeLibThreadInit(ThreadVars *tv, const void *initdata, void **data);
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static TmEcode DecodeLibThreadDeinit(ThreadVars *tv, void *data);
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static TmEcode DecodeLib(ThreadVars *tv, Packet *p, void *data);
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/* Set time to the first packet timestamp when replaying a PCAP. */
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static bool time_set = false;
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/** \brief register a "Decode" module for suricata as a library.
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*
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* The "Decode" module is the first module invoked when processing a packet */
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void TmModuleDecodeLibRegister(void)
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{
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tmm_modules[TMM_DECODELIB].name = "DecodeLib";
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tmm_modules[TMM_DECODELIB].ThreadInit = DecodeLibThreadInit;
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tmm_modules[TMM_DECODELIB].Func = DecodeLib;
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tmm_modules[TMM_DECODELIB].ThreadExitPrintStats = NULL;
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tmm_modules[TMM_DECODELIB].ThreadDeinit = DecodeLibThreadDeinit;
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tmm_modules[TMM_DECODELIB].cap_flags = 0;
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tmm_modules[TMM_DECODELIB].flags = TM_FLAG_DECODE_TM;
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}
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/** \brief initialize the "Decode" module.
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*
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* \param tv Pointer to the per-thread structure.
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* \param initdata Pointer to initialization context.
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* \param data Pointer to the initialized context.
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* \return Error code.
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*/
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TmEcode DecodeLibThreadInit(ThreadVars *tv, const void *initdata, void **data)
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{
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SCEnter();
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DecodeThreadVars *dtv = NULL;
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dtv = DecodeThreadVarsAlloc(tv);
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if (dtv == NULL)
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SCReturnInt(TM_ECODE_FAILED);
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DecodeRegisterPerfCounters(dtv, tv);
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*data = (void *)dtv;
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SCReturnInt(TM_ECODE_OK);
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}
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/** \brief deinitialize the "Decode" module.
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*
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* \param tv Pointer to the per-thread structure.
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* \param data Pointer to the context.
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* \return Error code.
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*/
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TmEcode DecodeLibThreadDeinit(ThreadVars *tv, void *data)
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{
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if (data != NULL)
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DecodeThreadVarsFree(tv, data);
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time_set = false;
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SCReturnInt(TM_ECODE_OK);
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}
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/** \brief main decoding function.
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*
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* This method receives a packet and tries to identify layer 2 to 4 layers.
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*
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* \param tv Pointer to the per-thread structure.
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* \param p Pointer to the packet.
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* \param data Pointer to the context.
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* \return Error code.
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*/
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TmEcode DecodeLib(ThreadVars *tv, Packet *p, void *data)
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{
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SCEnter();
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DecodeThreadVars *dtv = (DecodeThreadVars *)data;
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BUG_ON(PKT_IS_PSEUDOPKT(p));
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/* update counters */
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DecodeUpdatePacketCounters(tv, dtv, p);
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/* If suri has set vlan during reading, we increase vlan counter */
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if (p->vlan_idx) {
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StatsIncr(tv, dtv->counter_vlan);
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}
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/* call the decoder */
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DecodeLinkLayer(tv, dtv, p->datalink, p, GET_PKT_DATA(p), GET_PKT_LEN(p));
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PacketDecodeFinalize(tv, dtv, p);
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SCReturnInt(TM_ECODE_OK);
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}
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/** \brief process a single packet.
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*
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* \param tv Pointer to the per-thread structure.
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* \param data Pointer to the raw packet.
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* \param datalink Datalink type.
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* \param ts Timeval structure.
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* \param len Packet length.
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* \param tenant_id Tenant id of the detection engine to use.
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* \param flags Packet flags (packet checksum, rule profiling...).
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* \param iface Sniffing interface this packet comes from (can be NULL).
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* \return Error code.
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*/
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int TmModuleLibHandlePacket(ThreadVars *tv, const uint8_t *data, int datalink, struct timeval ts,
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uint32_t len, uint32_t tenant_id, uint32_t flags, const char *iface)
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{
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/* If the packet is NULL, consider it as a read timeout. */
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if (data == NULL) {
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TmThreadsSetFlag(tv, THV_CAPTURE_INJECT_PKT);
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TmThreadsCaptureHandleTimeout(tv, NULL);
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SCReturnInt(TM_ECODE_OK);
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}
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Packet *p = PacketGetFromQueueOrAlloc();
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if (unlikely(p == NULL)) {
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SCReturnInt(TM_ECODE_FAILED);
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}
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/* If we are processing a PCAP and it is the first packet we need to set the timestamp. */
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SCTime_t timestamp = SCTIME_FROM_TIMEVAL(&ts);
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|
if (!time_set && !TimeModeIsLive()) {
|
||||||
|
TmThreadsInitThreadsTimestamp(timestamp);
|
||||||
|
time_set = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
PKT_SET_SRC(p, PKT_SRC_WIRE);
|
||||||
|
p->ts = timestamp;
|
||||||
|
p->datalink = datalink;
|
||||||
|
p->tenant_id = tenant_id;
|
||||||
|
p->flags |= flags;
|
||||||
|
|
||||||
|
/* Set the sniffing interface. */
|
||||||
|
if (iface) {
|
||||||
|
p->livedev = LiveGetDevice(iface);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (PacketSetData(p, data, len) == -1) {
|
||||||
|
TmqhOutputPacketpool(tv, p);
|
||||||
|
SCReturnInt(TM_ECODE_FAILED);
|
||||||
|
}
|
||||||
|
|
||||||
|
SCLogDebug("pktlen: %" PRIu32 " (pkt %p, pkt data %p)", GET_PKT_LEN(p), p, GET_PKT_DATA(p));
|
||||||
|
|
||||||
|
if (TmThreadsSlotProcessPkt(tv, tv->tm_slots, p) != TM_ECODE_OK) {
|
||||||
|
SCReturnInt(TM_ECODE_FAILED);
|
||||||
|
}
|
||||||
|
|
||||||
|
SCReturnInt(TM_ECODE_OK);
|
||||||
|
}
|
||||||
@ -0,0 +1,51 @@
|
|||||||
|
/* Copyright (C) 2023-2024 Open Information Security Foundation
|
||||||
|
*
|
||||||
|
* You can copy, redistribute or modify this Program under the terms of
|
||||||
|
* the GNU General Public License version 2 as published by the Free
|
||||||
|
* Software Foundation.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* version 2 along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||||
|
* 02110-1301, USA.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/** \file
|
||||||
|
*
|
||||||
|
* \author Angelo Mirabella <angelo.mirabella@broadcom.com>
|
||||||
|
*
|
||||||
|
* LIB packet and stream decoding support
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef SURICATA_SOURCE_LIB_H
|
||||||
|
#define SURICATA_SOURCE_LIB_H
|
||||||
|
|
||||||
|
#include "tm-threads.h"
|
||||||
|
|
||||||
|
/** \brief register a "Decode" module for suricata as a library.
|
||||||
|
*
|
||||||
|
* The "Decode" module is the first module invoked when processing a packet */
|
||||||
|
void TmModuleDecodeLibRegister(void);
|
||||||
|
|
||||||
|
/** \brief process a single packet.
|
||||||
|
*
|
||||||
|
* \param tv Pointer to the per-thread structure.
|
||||||
|
* \param data Pointer to the raw packet.
|
||||||
|
* \param datalink Datalink type.
|
||||||
|
* \param ts Timeval structure.
|
||||||
|
* \param len Packet length.
|
||||||
|
* \param tenant_id Tenant id of the detection engine to use.
|
||||||
|
* \param flags Packet flags (packet checksum, rule profiling...).
|
||||||
|
* \param iface Sniffing interface this packet comes from (can be NULL).
|
||||||
|
* \return Error code.
|
||||||
|
*/
|
||||||
|
int TmModuleLibHandlePacket(ThreadVars *tv, const uint8_t *data, int datalink, struct timeval ts,
|
||||||
|
uint32_t len, uint32_t tenant_id, uint32_t flags, const char *iface);
|
||||||
|
|
||||||
|
#endif /* SURICATA_SOURCE_LIB_H */
|
||||||
Loading…
Reference in New Issue