mirror of https://github.com/OISF/suricata
add the support to log the fast.log alerts type to syslog
Gurvinder Singh
15 years ago
committed by
Victor Julien
parent
d424ac7c61
commit
e5edc6e8e3
@ -0,0 +1,407 @@
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/* Copyright (C) 2007-2010 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 Gurvinder Singh <gurvindersinghdahiya@gmail.com>
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*
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* Logs alerts in a line based text format in to syslog.
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*
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*/
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#include "suricata-common.h"
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#include "debug.h"
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#include "flow.h"
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#include "conf.h"
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#include "threads.h"
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#include "tm-threads.h"
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#include "threadvars.h"
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#include "tm-modules.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-mpm.h"
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#include "detect-reference.h"
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#include "output.h"
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#include "alert-syslog.h"
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#include "util-classification-config.h"
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#include "util-debug.h"
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#include "util-print.h"
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#include "util-proto-name.h"
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#include "util-syslog.h"
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#define DEFAULT_ALERT_SYSLOG_FACILITY_STR "local0"
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#define DEFAULT_ALERT_SYSLOG_FACILITY LOG_LOCAL0
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#define DEFAULT_ALERT_SYSLOG_LEVEL LOG_ERR
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#define MODULE_NAME "AlertSyslog"
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typedef struct AlertSyslogThread_ {
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/** LogFileCtx has the pointer to the file and a mutex to allow multithreading */
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LogFileCtx* file_ctx;
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} AlertSyslogThread;
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TmEcode AlertSyslog (ThreadVars *, Packet *, void *, PacketQueue *, PacketQueue *);
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TmEcode AlertSyslogIPv4(ThreadVars *, Packet *, void *, PacketQueue *, PacketQueue *);
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TmEcode AlertSyslogIPv6(ThreadVars *, Packet *, void *, PacketQueue *, PacketQueue *);
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TmEcode AlertSyslogThreadInit(ThreadVars *, void *, void **);
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TmEcode AlertSyslogThreadDeinit(ThreadVars *, void *);
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void AlertSyslogExitPrintStats(ThreadVars *, void *);
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void AlertSyslogRegisterTests(void);
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OutputCtx *AlertSyslogInitCtx(ConfNode *);
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static void AlertSyslogDeInitCtx(OutputCtx *);
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/** \brief Function to register the AlertSyslog module */
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void TmModuleAlertSyslogRegister (void) {
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tmm_modules[TMM_ALERTSYSLOG].name = MODULE_NAME;
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tmm_modules[TMM_ALERTSYSLOG].ThreadInit = AlertSyslogThreadInit;
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tmm_modules[TMM_ALERTSYSLOG].Func = AlertSyslog;
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tmm_modules[TMM_ALERTSYSLOG].ThreadExitPrintStats = AlertSyslogExitPrintStats;
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tmm_modules[TMM_ALERTSYSLOG].ThreadDeinit = AlertSyslogThreadDeinit;
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tmm_modules[TMM_ALERTSYSLOG].RegisterTests = NULL;
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tmm_modules[TMM_ALERTSYSLOG].cap_flags = 0;
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OutputRegisterModule(MODULE_NAME, "syslog", AlertSyslogInitCtx);
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}
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/** \brief Function to register the AlertSyslog module for IPv4 */
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void TmModuleAlertSyslogIPv4Register (void) {
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tmm_modules[TMM_ALERTSYSLOG4].name = "AlertSyslogIPv4";
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tmm_modules[TMM_ALERTSYSLOG4].ThreadInit = AlertSyslogThreadInit;
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tmm_modules[TMM_ALERTSYSLOG4].Func = AlertSyslogIPv4;
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tmm_modules[TMM_ALERTSYSLOG4].ThreadExitPrintStats = AlertSyslogExitPrintStats;
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tmm_modules[TMM_ALERTSYSLOG4].ThreadDeinit = AlertSyslogThreadDeinit;
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tmm_modules[TMM_ALERTSYSLOG4].RegisterTests = NULL;
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}
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/** \brief Function to register the AlertSyslog module for IPv6 */
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void TmModuleAlertSyslogIPv6Register (void) {
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tmm_modules[TMM_ALERTSYSLOG6].name = "AlertSyslogIPv6";
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tmm_modules[TMM_ALERTSYSLOG6].ThreadInit = AlertSyslogThreadInit;
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tmm_modules[TMM_ALERTSYSLOG6].Func = AlertSyslogIPv6;
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tmm_modules[TMM_ALERTSYSLOG6].ThreadExitPrintStats = AlertSyslogExitPrintStats;
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tmm_modules[TMM_ALERTSYSLOG6].ThreadDeinit = AlertSyslogThreadDeinit;
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tmm_modules[TMM_ALERTSYSLOG6].RegisterTests = NULL;
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}
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/**
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* \brief Create a new LogFileCtx for "syslog" output style.
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*
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* \param conf The configuration node for this output.
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* \return A OutputCtx pointer on success, NULL on failure.
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*/
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OutputCtx *AlertSyslogInitCtx(ConfNode *conf)
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{
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const char *enabled = ConfNodeLookupChildValue(conf, "enabled");
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if (enabled != NULL && strncmp(enabled, "no", 2) == 0) {
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SCLogDebug("alert-syslog module has been disabled");
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return NULL;
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}
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const char *facility_s = ConfNodeLookupChildValue(conf, "facility");
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if (facility_s == NULL) {
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facility_s = DEFAULT_ALERT_SYSLOG_FACILITY_STR;
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}
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LogFileCtx *logfile_ctx = LogFileNewCtx();
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if (logfile_ctx == NULL) {
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SCLogDebug("AlertSyslogInitCtx: Could not create new LogFileCtx");
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return NULL;
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}
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int facility = SCMapEnumNameToValue(facility_s, SCGetFacilityMap());
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if (facility == -1) {
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SCLogWarning(SC_ERR_INVALID_ARGUMENT, "Invalid syslog facility: \"%s\","
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" now using \"%s\" as syslog facility", facility_s,
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DEFAULT_ALERT_SYSLOG_FACILITY_STR);
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facility = DEFAULT_ALERT_SYSLOG_FACILITY;
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}
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openlog(NULL, LOG_NDELAY, facility);
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OutputCtx *output_ctx = SCCalloc(1, sizeof(OutputCtx));
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if (output_ctx == NULL) {
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SCLogDebug("AlertSyslogInitCtx: Could not create new OutputCtx");
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return NULL;
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}
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output_ctx->data = logfile_ctx;
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output_ctx->DeInit = AlertSyslogDeInitCtx;
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SCLogInfo("Syslog output initialized");
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return output_ctx;
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}
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/**
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* \brief Function to clear the memory of the output context and closes the
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* syslog interface
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*
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* \param output_ctx pointer to the output context to be cleared
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*/
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static void AlertSyslogDeInitCtx(OutputCtx *output_ctx)
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{
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if (output_ctx != NULL) {
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LogFileCtx *logfile_ctx = (LogFileCtx *)output_ctx->data;
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LogFileFreeCtx(logfile_ctx);
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free(output_ctx);
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}
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closelog();
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}
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/**
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* \brief Function to initialize the AlertSystlogThread and sets the output
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* context pointer
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*
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* \param tv Pointer to the threadvars
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* \param initdata Pointer to the output context
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* \param data pointer to pointer to point to the AlertSyslogThread
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*/
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TmEcode AlertSyslogThreadInit(ThreadVars *t, void *initdata, void **data)
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{
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AlertSyslogThread *ast = SCMalloc(sizeof(AlertSyslogThread));
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if (ast == NULL)
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return TM_ECODE_FAILED;
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memset(ast, 0, sizeof(AlertSyslogThread));
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if(initdata == NULL)
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{
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SCLogDebug("Error getting context for AlertSyslog. \"initdata\" "
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"argument NULL");
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SCFree(ast);
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return TM_ECODE_FAILED;
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}
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/** Use the Ouptut Context (file pointer and mutex) */
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ast->file_ctx = ((OutputCtx *)initdata)->data;
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*data = (void *)ast;
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return TM_ECODE_OK;
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}
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/**
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* \brief Function to deinitialize the AlertSystlogThread
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*
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* \param tv Pointer to the threadvars
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* \param data pointer to the AlertSyslogThread to be cleared
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*/
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TmEcode AlertSyslogThreadDeinit(ThreadVars *t, void *data)
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{
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AlertSyslogThread *ast = (AlertSyslogThread *)data;
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if (ast == NULL) {
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return TM_ECODE_OK;
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}
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/* clear memory */
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memset(ast, 0, sizeof(AlertSyslogThread));
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SCFree(ast);
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return TM_ECODE_OK;
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}
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/**
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* \brief Function which is called to print the IPv4 alerts to the syslog
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*
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* \param tv Pointer to the threadvars
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* \param p Pointer to the packet
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* \param data pointer to the AlertSyslogThread
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* \param pq pointer the to packet queue
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* \param postpq pointer to the post processed packet queue
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*
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* \return On succes return TM_ECODE_OK
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*/
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TmEcode AlertSyslogIPv4(ThreadVars *tv, Packet *p, void *data, PacketQueue *pq,
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PacketQueue *postpq)
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{
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AlertSyslogThread *ast = (AlertSyslogThread *)data;
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int i;
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if (p->alerts.cnt == 0)
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return TM_ECODE_OK;
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SCMutexLock(&ast->file_ctx->fp_mutex);
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ast->file_ctx->alerts += p->alerts.cnt;
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for (i = 0; i < p->alerts.cnt; i++) {
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PacketAlert *pa = &p->alerts.alerts[i];
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char srcip[16], dstip[16];
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inet_ntop(AF_INET, (const void *)GET_IPV4_SRC_ADDR_PTR(p), srcip, sizeof(srcip));
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inet_ntop(AF_INET, (const void *)GET_IPV4_DST_ADDR_PTR(p), dstip, sizeof(dstip));
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if (SCProtoNameValid(IPV4_GET_IPPROTO(p)) == TRUE) {
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syslog(DEFAULT_ALERT_SYSLOG_LEVEL, "[%" PRIu32 ":%" PRIu32 ":%"
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PRIu32 "] %s [Classification: %s] [Priority: %"PRIu32"]"
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" {%s} %s:%" PRIu32 " -> %s:%" PRIu32 "", pa->gid, pa->sid,
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pa->rev, pa->msg, pa->class_msg, pa->prio,
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known_proto[IPV4_GET_IPPROTO(p)], srcip, p->sp, dstip, p->dp);
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} else {
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syslog(DEFAULT_ALERT_SYSLOG_LEVEL, "[%" PRIu32 ":%" PRIu32 ":%"
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PRIu32 "] %s [Classification: %s] [Priority: %"PRIu32"]"
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" {PROTO:%03" PRIu32 "} %s:%" PRIu32 " -> %s:%" PRIu32 "",
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pa->gid, pa->sid, pa->rev, pa->msg, pa->class_msg, pa->prio,
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IPV4_GET_IPPROTO(p), srcip, p->sp, dstip, p->dp);
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}
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}
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SCMutexUnlock(&ast->file_ctx->fp_mutex);
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return TM_ECODE_OK;
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}
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/**
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* \brief Function which is called to print the IPv6 alerts to the syslog
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*
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* \param tv Pointer to the threadvars
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* \param p Pointer to the packet
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* \param data pointer to the AlertSyslogThread
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* \param pq pointer the to packet queue
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* \param postpq pointer to the post processed packet queue
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*
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* \return On succes return TM_ECODE_OK
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*/
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TmEcode AlertSyslogIPv6(ThreadVars *tv, Packet *p, void *data, PacketQueue *pq,
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PacketQueue *postpq)
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{
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AlertSyslogThread *ast = (AlertSyslogThread *)data;
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int i;
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if (p->alerts.cnt == 0)
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return TM_ECODE_OK;
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SCMutexLock(&ast->file_ctx->fp_mutex);
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ast->file_ctx->alerts += p->alerts.cnt;
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for (i = 0; i < p->alerts.cnt; i++) {
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PacketAlert *pa = &p->alerts.alerts[i];
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char srcip[46], dstip[46];
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inet_ntop(AF_INET6, (const void *)GET_IPV6_SRC_ADDR(p), srcip, sizeof(srcip));
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inet_ntop(AF_INET6, (const void *)GET_IPV6_DST_ADDR(p), dstip, sizeof(dstip));
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if (SCProtoNameValid(IPV6_GET_L4PROTO(p)) == TRUE) {
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syslog(DEFAULT_ALERT_SYSLOG_LEVEL, "[%" PRIu32 ":%" PRIu32 ":%"
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"" PRIu32 "] %s [Classification: %s] [Priority: %"
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"" PRIu32 "] {%s} %s:%" PRIu32 " -> %s:%" PRIu32 "",
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pa->gid, pa->sid, pa->rev, pa->msg, pa->class_msg,
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pa->prio, known_proto[IPV6_GET_L4PROTO(p)], srcip, p->sp,
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dstip, p->dp);
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} else {
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syslog(DEFAULT_ALERT_SYSLOG_LEVEL, "[%" PRIu32 ":%" PRIu32 ":%"
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"" PRIu32 "] %s [Classification: %s] [Priority: %"
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"" PRIu32 "] {PROTO:%03" PRIu32 "} %s:%" PRIu32 " -> %s:%" PRIu32 "",
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pa->gid, pa->sid, pa->rev, pa->msg, pa->class_msg,
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pa->prio, IPV6_GET_L4PROTO(p), srcip, p->sp, dstip, p->dp);
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}
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}
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SCMutexUnlock(&ast->file_ctx->fp_mutex);
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return TM_ECODE_OK;
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}
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/**
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* \brief Function which is called to print the decode alerts to the syslog
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*
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* \param tv Pointer to the threadvars
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* \param p Pointer to the packet
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* \param data pointer to the AlertSyslogThread
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* \param pq pointer the to packet queue
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* \param postpq pointer to the post processed packet queue
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*
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* \return On succes return TM_ECODE_OK
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*/
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TmEcode AlertSyslogDecoderEvent(ThreadVars *tv, Packet *p, void *data,
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PacketQueue *pq, PacketQueue *postpq)
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{
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AlertSyslogThread *ast = (AlertSyslogThread *)data;
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int i;
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if (p->alerts.cnt == 0)
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return TM_ECODE_OK;
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SCMutexLock(&ast->file_ctx->fp_mutex);
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ast->file_ctx->alerts += p->alerts.cnt;
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char temp_buf[2048];
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for (i = 0; i < p->alerts.cnt; i++) {
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PacketAlert *pa = &p->alerts.alerts[i];
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syslog(DEFAULT_ALERT_SYSLOG_LEVEL, "[%" PRIu32 ":%" PRIu32 ":%" PRIu32 "]"
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" %s [Classification: %s] [Priority: %" PRIu32 "] [**] [Raw pkt: ",
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pa->gid, pa->sid, pa->rev, pa->msg, pa->class_msg, pa->prio);
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PrintRawLineHexBuf(temp_buf, p->pkt, p->pktlen < 32 ? p->pktlen : 32);
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syslog(DEFAULT_ALERT_SYSLOG_LEVEL, "%s", temp_buf);
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if (p->pcap_cnt != 0) {
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syslog(DEFAULT_ALERT_SYSLOG_LEVEL, "] [pcap file packet: %"PRIu64"]",
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p->pcap_cnt);
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}
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}
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SCMutexUnlock(&ast->file_ctx->fp_mutex);
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return TM_ECODE_OK;
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}
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/**
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* \brief Function which is called to print the alerts to the syslog
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*
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* \param tv Pointer to the threadvars
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* \param p Pointer to the packet
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* \param data pointer to the AlertSyslogThread
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* \param pq pointer the to packet queue
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* \param postpq pointer to the post processed packet queue
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*
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* \return On succes return TM_ECODE_OK
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*/
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TmEcode AlertSyslog (ThreadVars *tv, Packet *p, void *data, PacketQueue *pq,
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PacketQueue *postpq)
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{
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if (PKT_IS_IPV4(p)) {
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return AlertSyslogIPv4(tv, p, data, pq, postpq);
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} else if (PKT_IS_IPV6(p)) {
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return AlertSyslogIPv6(tv, p, data, pq, postpq);
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} else if (p->events.cnt > 0) {
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return AlertSyslogDecoderEvent(tv, p, data, pq, postpq);
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}
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return TM_ECODE_OK;
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}
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/**
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* \brief Function to print the total alert while closing the engine
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*
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* \param tv Pointer to the output threadvars
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* \param data Pointer to the AlertSyslogThread data
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*/
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void AlertSyslogExitPrintStats(ThreadVars *tv, void *data) {
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AlertSyslogThread *ast = (AlertSyslogThread *)data;
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if (ast == NULL) {
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return;
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}
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SCLogInfo("(%s) Alerts %" PRIu64 "", tv->name, ast->file_ctx->alerts);
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}
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@ -0,0 +1,34 @@
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/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* 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.
|
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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
|
||||
* 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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/**
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* \file
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*
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* \author Gurvinder Singh <gurvindersinghdahiya@gmail.com>
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*
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* alert syslog modeule header file
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*
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*/
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#ifndef ALERT_SYSLOG_H
|
||||
#define ALERT_SYSLOG_H
|
||||
|
||||
void TmModuleAlertSyslogRegister (void);
|
||||
void TmModuleAlertSyslogIPv4Register (void);
|
||||
void TmModuleAlertSyslogIPv6Register (void);
|
||||
|
||||
#endif /* ALERT_SYSLOG_H */
|
||||
@ -0,0 +1,58 @@
|
||||
/* Copyright (C) 2007-2010 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 Gurvinder Singh <gurvindersinghdahiya@gmail.com>
|
||||
*
|
||||
* Syslog utility file
|
||||
*
|
||||
*/
|
||||
|
||||
#include "suricata-common.h"
|
||||
|
||||
/* holds the string-enum mapping for the syslog facility in SCLogOPIfaceCtx */
|
||||
SCEnumCharMap sc_syslog_facility_map[] = {
|
||||
{ "auth", LOG_AUTH },
|
||||
{ "authpriv", LOG_AUTHPRIV },
|
||||
{ "cron", LOG_CRON },
|
||||
{ "daemon", LOG_DAEMON },
|
||||
{ "ftp", LOG_FTP },
|
||||
{ "kern", LOG_KERN },
|
||||
{ "lpr", LOG_LPR },
|
||||
{ "mail", LOG_MAIL },
|
||||
{ "news", LOG_NEWS },
|
||||
{ "security", LOG_AUTH },
|
||||
{ "syslog", LOG_SYSLOG },
|
||||
{ "user", LOG_USER },
|
||||
{ "uucp", LOG_UUCP },
|
||||
{ "local0", LOG_LOCAL0 },
|
||||
{ "local1", LOG_LOCAL1 },
|
||||
{ "local2", LOG_LOCAL2 },
|
||||
{ "local3", LOG_LOCAL3 },
|
||||
{ "local4", LOG_LOCAL4 },
|
||||
{ "local5", LOG_LOCAL5 },
|
||||
{ "local6", LOG_LOCAL6 },
|
||||
{ "local7", LOG_LOCAL7 },
|
||||
{ NULL, -1 }
|
||||
};
|
||||
|
||||
/** \brief returns the syslog facility enum map */
|
||||
SCEnumCharMap *SCGetFacilityMap() {
|
||||
return sc_syslog_facility_map;
|
||||
}
|
||||
@ -0,0 +1,30 @@
|
||||
/* Copyright (C) 2007-2010 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 Gurvinder Singh <gurvindersinghdahiya@gmail.com>
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef UTIL_SYSLOG_H
|
||||
#define UTIL_SYSLOG_H
|
||||
|
||||
SCEnumCharMap *SCGetFacilityMap(void);
|
||||
|
||||
#endif /* UTIL_SYSLOG_H */
|
||||
Loading…
Reference in New Issue