+++ /dev/null
-/* Copyright (C) 2011-2014 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 Eric Leblond <eric@regit.org>
- *
- * Logs alerts in a line based text format suitable for interaction
- * with wireshark or another pcap file analysis tools.
- *
- * The format of the logging is:
- * Packet number:GID of matching signature:SID of signature:REV of signature:Flow:To Server:To Client:0:0:Signature Message
- * The two zeros are reserved for upcoming usage (probably byte start
- * and byte end of payload)
- */
-
-#include "suricata-common.h"
-#include "debug.h"
-#include "detect.h"
-#include "flow.h"
-#include "conf.h"
-
-#include "threads.h"
-#include "tm-threads.h"
-#include "threadvars.h"
-#include "util-debug.h"
-
-#include "util-unittest.h"
-#include "util-unittest-helper.h"
-
-#include "detect.h"
-#include "detect-parse.h"
-#include "detect-engine.h"
-#include "detect-engine-mpm.h"
-#include "detect-reference.h"
-#include "util-classification-config.h"
-
-#include "output.h"
-#include "alert-pcapinfo.h"
-
-#include "util-privs.h"
-#include "util-print.h"
-#include "util-proto-name.h"
-#include "util-optimize.h"
-#include "util-logopenfile.h"
-
-#define DEFAULT_LOG_FILENAME "alert-pcapinfo.log"
-/* We need a new file for each pcap */
-#define DEFAULT_PCAPINFO_MODE_APPEND "no"
-
-#define MODULE_NAME "AlertPcapInfo"
-
-typedef struct AlertPcapInfoThread_ {
- /** LogFileCtx has the pointer to the file and a mutex to allow multithreading */
- LogFileCtx* file_ctx;
-} AlertPcapInfoThread;
-
-static TmEcode AlertPcapInfoThreadInit(ThreadVars *t, void *initdata, void **data)
-{
- AlertPcapInfoThread *aft = SCMalloc(sizeof(AlertPcapInfoThread));
- if (unlikely(aft == NULL))
- return TM_ECODE_FAILED;
- memset(aft, 0, sizeof(AlertPcapInfoThread));
- if(initdata == NULL)
- {
- SCLogDebug("Error getting context for AlertPcapInfo. \"initdata\" argument NULL");
- SCFree(aft);
- return TM_ECODE_FAILED;
- }
- /** Use the Ouptut Context (file pointer and mutex) */
- aft->file_ctx = ((OutputCtx *)initdata)->data;
-
- *data = (void *)aft;
- return TM_ECODE_OK;
-}
-
-static TmEcode AlertPcapInfoThreadDeinit(ThreadVars *t, void *data)
-{
- AlertPcapInfoThread *aft = (AlertPcapInfoThread *)data;
- if (aft == NULL) {
- return TM_ECODE_OK;
- }
-
- /* clear memory */
- memset(aft, 0, sizeof(AlertPcapInfoThread));
-
- SCFree(aft);
- return TM_ECODE_OK;
-}
-
-static void AlertPcapInfoExitPrintStats(ThreadVars *tv, void *data) {
- AlertPcapInfoThread *aft = (AlertPcapInfoThread *)data;
- if (aft == NULL) {
- return;
- }
-
- SCLogInfo("(%s) Alerts %" PRIu64 "", tv->name, aft->file_ctx->alerts);
-}
-
-static void AlertPcapInfoDeInitCtx(OutputCtx *output_ctx)
-{
- LogFileCtx *logfile_ctx = (LogFileCtx *)output_ctx->data;
- LogFileFreeCtx(logfile_ctx);
- SCFree(output_ctx);
-}
-
-/** \brief Read the config set the file pointer, open the file
- * \param file_ctx pointer to a created LogFileCtx using LogFileNewCtx()
- * \param filename name of log file
- * \param mode append mode (bool)
- * \return -1 if failure, 0 if succesful
- * */
-static int AlertPcapInfoOpenFileCtx(LogFileCtx *file_ctx, const char *filename,
- const char *mode)
-{
- char log_path[PATH_MAX];
- char *log_dir;
-
- log_dir = ConfigGetLogDirectory();
-
- snprintf(log_path, PATH_MAX, "%s/%s", log_dir, filename);
-
- if (ConfValIsTrue(mode)) {
- file_ctx->fp = fopen(log_path, "a");
- } else {
- file_ctx->fp = fopen(log_path, "w");
- }
-
- if (file_ctx->fp == NULL) {
- SCLogError(SC_ERR_FOPEN, "failed to open %s: %s", log_path,
- strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-/**
- * \brief Create a new LogFileCtx for "fast" output style.
- * \param conf The configuration node for this output.
- * \return A LogFileCtx pointer on success, NULL on failure.
- */
-static OutputCtx *AlertPcapInfoInitCtx(ConfNode *conf)
-{
- LogFileCtx *logfile_ctx = LogFileNewCtx();
- if (logfile_ctx == NULL) {
- SCLogDebug("AlertPcapInfoInitCtx2: Could not create new LogFileCtx");
- return NULL;
- }
-
- const char *filename = ConfNodeLookupChildValue(conf, "filename");
- if (filename == NULL)
- filename = DEFAULT_LOG_FILENAME;
-
- const char *mode = ConfNodeLookupChildValue(conf, "append");
- if (mode == NULL)
- mode = DEFAULT_PCAPINFO_MODE_APPEND;
-
- if (AlertPcapInfoOpenFileCtx(logfile_ctx, filename, mode) < 0) {
- LogFileFreeCtx(logfile_ctx);
- return NULL;
- }
-
- OutputCtx *output_ctx = SCCalloc(1, sizeof(OutputCtx));
- if (unlikely(output_ctx == NULL))
- return NULL;
- output_ctx->data = logfile_ctx;
- output_ctx->DeInit = AlertPcapInfoDeInitCtx;
-
- SCLogInfo("Fast log output initialized, filename: %s", filename);
-
- return output_ctx;
-}
-
-static int AlertPcapInfoCondition(ThreadVars *tv, const Packet *p) {
- return ((p->pcap_cnt != 0 && p->alerts.cnt > 0) ? TRUE : FALSE);
-}
-
-static int AlertPcapInfoLogger(ThreadVars *tv, void *thread_data, const Packet *p) {
- AlertPcapInfoThread *aft = (AlertPcapInfoThread *)thread_data;
- int i;
-
- /* logging is useless if we don't have pcap number */
- if ((p->pcap_cnt != 0) && (p->alerts.cnt > 0)) {
- SCMutexLock(&aft->file_ctx->fp_mutex);
- /* only count logged alert */
- aft->file_ctx->alerts += p->alerts.cnt;
- for (i = 0; i < p->alerts.cnt; i++) {
- const PacketAlert *pa = &p->alerts.alerts[i];
-
- fprintf(aft->file_ctx->fp, "%" PRIu64 ":%" PRIu32 ":%" PRIu32 ":%d:%d:%d:%d:0:0:%s\n",
- p->pcap_cnt, pa->s->gid, pa->s->id, pa->s->rev,
- pa->flags & (PACKET_ALERT_FLAG_STATE_MATCH|PACKET_ALERT_FLAG_STREAM_MATCH) ? 1 : 0,
- p->flowflags & FLOW_PKT_TOSERVER ? 1 : 0,
- p->flowflags & FLOW_PKT_TOCLIENT ? 1 : 0,
- pa->s->msg);
- }
- SCMutexUnlock(&aft->file_ctx->fp_mutex);
- }
-
- return 0;
-}
-
-void TmModuleAlertPcapInfoRegister (void) {
- tmm_modules[TMM_ALERTPCAPINFO].name = MODULE_NAME;
- tmm_modules[TMM_ALERTPCAPINFO].ThreadInit = AlertPcapInfoThreadInit;
- tmm_modules[TMM_ALERTPCAPINFO].Func = NULL;
- tmm_modules[TMM_ALERTPCAPINFO].ThreadExitPrintStats = AlertPcapInfoExitPrintStats;
- tmm_modules[TMM_ALERTPCAPINFO].ThreadDeinit = AlertPcapInfoThreadDeinit;
- tmm_modules[TMM_ALERTPCAPINFO].RegisterTests = NULL;
- tmm_modules[TMM_ALERTPCAPINFO].cap_flags = 0;
- tmm_modules[TMM_ALERTPCAPINFO].flags = TM_FLAG_LOGAPI_TM;
-
- OutputRegisterPacketModule(MODULE_NAME, "pcap-info",
- AlertPcapInfoInitCtx, AlertPcapInfoLogger, AlertPcapInfoCondition);
-}
projects / thirdparty / suricata.git / commitdiff
