/src/suricata7/src/alert-syslog.c

Source
/* Copyright (C) 2007-2021 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>
 *
 * Logs alerts in a line based text format into syslog.
 *
 */

#include "suricata-common.h"
#include "flow.h"
#include "conf.h"

#include "threads.h"
#include "tm-threads.h"
#include "threadvars.h"

#include "detect.h"
#include "detect-parse.h"
#include "detect-engine.h"
#include "detect-engine-mpm.h"
#include "detect-reference.h"

#include "output.h"
#include "alert-syslog.h"

#include "util-classification-config.h"
#include "util-debug.h"
#include "util-print.h"
#include "util-proto-name.h"
#include "util-syslog.h"
#include "util-optimize.h"
#include "util-logopenfile.h"
#include "action-globals.h"

#ifndef OS_WIN32

#define MODULE_NAME                             "AlertSyslog"

static int alert_syslog_level = DEFAULT_ALERT_SYSLOG_LEVEL;

typedef struct AlertSyslogThread_ {
    /** LogFileCtx has the pointer to the file and a mutex to allow multithreading */
    LogFileCtx* file_ctx;
} AlertSyslogThread;

/**
 * \brief Function to clear the memory of the output context and closes the
 *        syslog interface
 *
 * \param output_ctx pointer to the output context to be cleared
 */
static void AlertSyslogDeInitCtx(OutputCtx *output_ctx)
{
    if (output_ctx != NULL) {
        LogFileCtx *logfile_ctx = (LogFileCtx *)output_ctx->data;
        if (logfile_ctx != NULL) {
            LogFileFreeCtx(logfile_ctx);
        }
        SCFree(output_ctx);
    }
    closelog();
}

/**
 * \brief Create a new LogFileCtx for "syslog" output style.
 *
 * \param conf The configuration node for this output.
 * \return A OutputCtx pointer on success, NULL on failure.
 */
static OutputInitResult AlertSyslogInitCtx(ConfNode *conf)
{
    OutputInitResult result = { NULL, false };
    const char *facility_s = ConfNodeLookupChildValue(conf, "facility");
    if (facility_s == NULL) {
        facility_s = DEFAULT_ALERT_SYSLOG_FACILITY_STR;
    }

    LogFileCtx *logfile_ctx = LogFileNewCtx();
    if (logfile_ctx == NULL) {
        SCLogDebug("AlertSyslogInitCtx: Could not create new LogFileCtx");
        return result;
    }

    int facility = SCMapEnumNameToValue(facility_s, SCSyslogGetFacilityMap());
    if (facility == -1) {
        SCLogWarning("Invalid syslog facility: \"%s\","
                     " now using \"%s\" as syslog facility",
                facility_s, DEFAULT_ALERT_SYSLOG_FACILITY_STR);
        facility = DEFAULT_ALERT_SYSLOG_FACILITY;
    }

    const char *level_s = ConfNodeLookupChildValue(conf, "level");
    if (level_s != NULL) {
        int level = SCMapEnumNameToValue(level_s, SCSyslogGetLogLevelMap());
        if (level != -1) {
            alert_syslog_level = level;
        }
    }

    const char *ident = ConfNodeLookupChildValue(conf, "identity");
    /* if null we just pass that to openlog, which will then
     * figure it out by itself. */

    openlog(ident, LOG_PID|LOG_NDELAY, facility);

    OutputCtx *output_ctx = SCMalloc(sizeof(OutputCtx));
    if (unlikely(output_ctx == NULL)) {
        SCLogDebug("could not create new OutputCtx");
        LogFileFreeCtx(logfile_ctx);
        return result;
    }
    memset(output_ctx, 0x00, sizeof(OutputCtx));

    output_ctx->data = logfile_ctx;
    output_ctx->DeInit = AlertSyslogDeInitCtx;

    SCLogInfo("Syslog output initialized");

    result.ctx = output_ctx;
    result.ok = true;
    return result;
}

/**
 * \brief Function to initialize the AlertSyslogThread and sets the output
 *        context pointer
 *
 * \param tv            Pointer to the threadvars
 * \param initdata      Pointer to the output context
 * \param data          pointer to pointer to point to the AlertSyslogThread
 */
static TmEcode AlertSyslogThreadInit(ThreadVars *t, const void *initdata, void **data)
{
    if(initdata == NULL) {
        SCLogDebug("Error getting context for AlertSyslog. \"initdata\" "
                "argument NULL");
        return TM_ECODE_FAILED;
    }

    AlertSyslogThread *ast = SCMalloc(sizeof(AlertSyslogThread));
    if (unlikely(ast == NULL))
        return TM_ECODE_FAILED;

    memset(ast, 0, sizeof(AlertSyslogThread));

    /** Use the Output Context (file pointer and mutex) */
    ast->file_ctx = ((OutputCtx *)initdata)->data;

    *data = (void *)ast;
    return TM_ECODE_OK;
}

/**
 * \brief Function to deinitialize the AlertSyslogThread
 *
 * \param tv            Pointer to the threadvars
 * \param data          pointer to the AlertSyslogThread to be cleared
 */
static TmEcode AlertSyslogThreadDeinit(ThreadVars *t, void *data)
{
    AlertSyslogThread *ast = (AlertSyslogThread *)data;
    if (ast == NULL) {
        return TM_ECODE_OK;
    }

    /* clear memory */
    memset(ast, 0, sizeof(AlertSyslogThread));

    SCFree(ast);
    return TM_ECODE_OK;
}

/**
 * \brief   Function which is called to print the IPv4 alerts to the syslog
 *
 * \param tv    Pointer to the threadvars
 * \param p     Pointer to the packet
 * \param data  pointer to the AlertSyslogThread
 *
 * \return On succes return TM_ECODE_OK
 */
static TmEcode AlertSyslogIPv4(ThreadVars *tv, const Packet *p, void *data)
{
    AlertSyslogThread *ast = (AlertSyslogThread *)data;
    int i;
    const char *action = "";

    if (p->alerts.cnt == 0)
        return TM_ECODE_OK;

    char proto[16] = "";
    const char *protoptr;
    if (SCProtoNameValid(IPV4_GET_IPPROTO(p))) {
        protoptr = known_proto[IPV4_GET_IPPROTO(p)];
    } else {
        snprintf(proto, sizeof(proto), "PROTO:%03" PRIu32, IPV4_GET_IPPROTO(p));
        protoptr = proto;
    }

    /* Not sure if this mutex is needed around calls to syslog. */
    SCMutexLock(&ast->file_ctx->fp_mutex);

    for (i = 0; i < p->alerts.cnt; i++) {
        const PacketAlert *pa = &p->alerts.alerts[i];
        if (unlikely(pa->s == NULL)) {
            continue;
        }

        char srcip[16], dstip[16];

        PrintInet(AF_INET, (const void *)GET_IPV4_SRC_ADDR_PTR(p), srcip, sizeof(srcip));
        PrintInet(AF_INET, (const void *)GET_IPV4_DST_ADDR_PTR(p), dstip, sizeof(dstip));

        if ((pa->action & ACTION_DROP) && EngineModeIsIPS()) {
            action = "[Drop] ";
        } else if (pa->action & ACTION_DROP) {
            action = "[wDrop] ";
        }

        syslog(alert_syslog_level, "%s[%" PRIu32 ":%" PRIu32 ":%"
                PRIu32 "] %s [Classification: %s] [Priority: %"PRIu32"]"
                " {%s} %s:%" PRIu32 " -> %s:%" PRIu32 "", action, pa->s->gid,
                pa->s->id, pa->s->rev, pa->s->msg, pa->s->class_msg, pa->s->prio,
                protoptr,  srcip, p->sp, dstip, p->dp);
    }
    SCMutexUnlock(&ast->file_ctx->fp_mutex);

    return TM_ECODE_OK;
}

/**
 * \brief   Function which is called to print the IPv6 alerts to the syslog
 *
 * \param tv    Pointer to the threadvars
 * \param p     Pointer to the packet
 * \param data  pointer to the AlertSyslogThread
 *
 * \return On succes return TM_ECODE_OK
 */
static TmEcode AlertSyslogIPv6(ThreadVars *tv, const Packet *p, void *data)
{
    AlertSyslogThread *ast = (AlertSyslogThread *)data;
    int i;
    const char *action = "";

    if (p->alerts.cnt == 0)
        return TM_ECODE_OK;

    char proto[16] = "";
    const char *protoptr;
    if (SCProtoNameValid(IPV6_GET_L4PROTO(p))) {
        protoptr = known_proto[IPV6_GET_L4PROTO(p)];
    } else {
        snprintf(proto, sizeof(proto), "PROTO:03%" PRIu32, IPV6_GET_L4PROTO(p));
        protoptr = proto;
    }

    SCMutexLock(&ast->file_ctx->fp_mutex);

    for (i = 0; i < p->alerts.cnt; i++) {
        const PacketAlert *pa = &p->alerts.alerts[i];
        if (unlikely(pa->s == NULL)) {
            continue;
        }

        char srcip[46], dstip[46];

        PrintInet(AF_INET6, (const void *)GET_IPV6_SRC_ADDR(p), srcip, sizeof(srcip));
        PrintInet(AF_INET6, (const void *)GET_IPV6_DST_ADDR(p), dstip, sizeof(dstip));

        if ((pa->action & ACTION_DROP) && EngineModeIsIPS()) {
            action = "[Drop] ";
        } else if (pa->action & ACTION_DROP) {
            action = "[wDrop] ";
        }

        syslog(alert_syslog_level, "%s[%" PRIu32 ":%" PRIu32 ":%"
                "" PRIu32 "] %s [Classification: %s] [Priority: %"
                "" PRIu32 "] {%s} %s:%" PRIu32 " -> %s:%" PRIu32 "",
                action, pa->s->gid, pa->s->id, pa->s->rev, pa->s->msg, pa->s->class_msg,
                pa->s->prio, protoptr, srcip, p->sp,
                dstip, p->dp);

    }
    SCMutexUnlock(&ast->file_ctx->fp_mutex);

    return TM_ECODE_OK;
}

/**
 * \brief   Function which is called to print the decode alerts to the syslog
 *
 * \param tv    Pointer to the threadvars
 * \param p     Pointer to the packet
 * \param data  pointer to the AlertSyslogThread
 *
 * \return On succes return TM_ECODE_OK
 */
static TmEcode AlertSyslogDecoderEvent(ThreadVars *tv, const Packet *p, void *data)
{
    AlertSyslogThread *ast = (AlertSyslogThread *)data;
    int i;
    const char *action = "";

    if (p->alerts.cnt == 0)
        return TM_ECODE_OK;

    SCMutexLock(&ast->file_ctx->fp_mutex);

    char temp_buf_hdr[512];
    char temp_buf_pkt[65] = "";
    char temp_buf_tail[64];
    char alert[2048] = "";

    for (i = 0; i < p->alerts.cnt; i++) {
        const PacketAlert *pa = &p->alerts.alerts[i];
        if (unlikely(pa->s == NULL)) {
            continue;
        }

        if ((pa->action & ACTION_DROP) && EngineModeIsIPS()) {
            action = "[Drop] ";
        } else if (pa->action & ACTION_DROP) {
            action = "[wDrop] ";
        }

        snprintf(temp_buf_hdr, sizeof(temp_buf_hdr), "%s[%" PRIu32 ":%" PRIu32
                ":%" PRIu32 "] %s [Classification: %s] [Priority: %" PRIu32
                "] [**] [Raw pkt: ", action, pa->s->gid, pa->s->id, pa->s->rev, pa->s->msg,
                pa->s->class_msg, pa->s->prio);
        strlcpy(alert, temp_buf_hdr, sizeof(alert));

        PrintRawLineHexBuf(temp_buf_pkt, sizeof(temp_buf_pkt), GET_PKT_DATA(p), GET_PKT_LEN(p) < 32 ? GET_PKT_LEN(p) : 32);
        strlcat(alert, temp_buf_pkt, sizeof(alert));

        if (p->pcap_cnt != 0) {
            snprintf(temp_buf_tail, sizeof(temp_buf_tail), "] [pcap file packet: %"PRIu64"]",
                    p->pcap_cnt);
        } else {
            temp_buf_tail[0] = ']';
            temp_buf_tail[1] = '\0';
        }
        strlcat(alert, temp_buf_tail, sizeof(alert));

        syslog(alert_syslog_level, "%s", alert);
    }
    SCMutexUnlock(&ast->file_ctx->fp_mutex);

    return TM_ECODE_OK;
}

static int AlertSyslogCondition(ThreadVars *tv, void *thread_data, const Packet *p)
{
    return (p->alerts.cnt > 0 ? TRUE : FALSE);
}

static int AlertSyslogLogger(ThreadVars *tv, void *thread_data, const Packet *p)
{
    if (PKT_IS_IPV4(p)) {
        return AlertSyslogIPv4(tv, p, thread_data);
    } else if (PKT_IS_IPV6(p)) {
        return AlertSyslogIPv6(tv, p, thread_data);
    } else if (p->events.cnt > 0) {
        return AlertSyslogDecoderEvent(tv, p, thread_data);
    }

    return TM_ECODE_OK;
}

#endif /* !OS_WIN32 */

/** \brief   Function to register the AlertSyslog module */
void AlertSyslogRegister (void)
{
#ifndef OS_WIN32
    OutputRegisterPacketModule(LOGGER_ALERT_SYSLOG, MODULE_NAME, "syslog",
        AlertSyslogInitCtx, AlertSyslogLogger, AlertSyslogCondition,
        AlertSyslogThreadInit, AlertSyslogThreadDeinit, NULL);
#endif /* !OS_WIN32 */
}

Coverage Report

Created: 2026-06-07 07:05

Line	Count	Source
1		/* Copyright (C) 2007-2021 Open Information Security Foundation
2		*
3		* You can copy, redistribute or modify this Program under the terms of
4		* the GNU General Public License version 2 as published by the Free
5		* Software Foundation.
6		*
7		* This program is distributed in the hope that it will be useful,
8		* but WITHOUT ANY WARRANTY; without even the implied warranty of
9		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10		* GNU General Public License for more details.
11		*
12		* You should have received a copy of the GNU General Public License
13		* version 2 along with this program; if not, write to the Free Software
14		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
15		* 02110-1301, USA.
16		*/
17
18		/**
19		* \file
20		*
21		* \author Gurvinder Singh <gurvindersinghdahiya@gmail.com>
22		*
23		* Logs alerts in a line based text format into syslog.
24		*
25		*/
26
27		#include "suricata-common.h"
28		#include "flow.h"
29		#include "conf.h"
30
31		#include "threads.h"
32		#include "tm-threads.h"
33		#include "threadvars.h"
34
35		#include "detect.h"
36		#include "detect-parse.h"
37		#include "detect-engine.h"
38		#include "detect-engine-mpm.h"
39		#include "detect-reference.h"
40
41		#include "output.h"
42		#include "alert-syslog.h"
43
44		#include "util-classification-config.h"
45		#include "util-debug.h"
46		#include "util-print.h"
47		#include "util-proto-name.h"
48		#include "util-syslog.h"
49		#include "util-optimize.h"
50		#include "util-logopenfile.h"
51		#include "action-globals.h"
52
53		#ifndef OS_WIN32
54
55	74	#define MODULE_NAME "AlertSyslog"
56
57		static int alert_syslog_level = DEFAULT_ALERT_SYSLOG_LEVEL;
58
59		typedef struct AlertSyslogThread_ {
60		/** LogFileCtx has the pointer to the file and a mutex to allow multithreading */
61		LogFileCtx* file_ctx;
62		} AlertSyslogThread;
63
64		/**
65		* \brief Function to clear the memory of the output context and closes the
66		* syslog interface
67		*
68		* \param output_ctx pointer to the output context to be cleared
69		*/
70		static void AlertSyslogDeInitCtx(OutputCtx *output_ctx)
71	0	{
72	0	if (output_ctx != NULL) {
73	0	LogFileCtx logfile_ctx = (LogFileCtx )output_ctx->data;
74	0	if (logfile_ctx != NULL) {
75	0	LogFileFreeCtx(logfile_ctx);
76	0	}
77	0	SCFree(output_ctx);
78	0	}
79	0	closelog();
80	0	}
81
82		/**
83		* \brief Create a new LogFileCtx for "syslog" output style.
84		*
85		* \param conf The configuration node for this output.
86		* \return A OutputCtx pointer on success, NULL on failure.
87		*/
88		static OutputInitResult AlertSyslogInitCtx(ConfNode *conf)
89	0	{
90	0	OutputInitResult result = { NULL, false };
91	0	const char *facility_s = ConfNodeLookupChildValue(conf, "facility");
92	0	if (facility_s == NULL) {
93	0	facility_s = DEFAULT_ALERT_SYSLOG_FACILITY_STR;
94	0	}
95
96	0	LogFileCtx *logfile_ctx = LogFileNewCtx();
97	0	if (logfile_ctx == NULL) {
98	0	SCLogDebug("AlertSyslogInitCtx: Could not create new LogFileCtx");
99	0	return result;
100	0	}
101
102	0	int facility = SCMapEnumNameToValue(facility_s, SCSyslogGetFacilityMap());
103	0	if (facility == -1) {
104	0	SCLogWarning("Invalid syslog facility: \"%s\","
105	0	" now using \"%s\" as syslog facility",
106	0	facility_s, DEFAULT_ALERT_SYSLOG_FACILITY_STR);
107	0	facility = DEFAULT_ALERT_SYSLOG_FACILITY;
108	0	}
109
110	0	const char *level_s = ConfNodeLookupChildValue(conf, "level");
111	0	if (level_s != NULL) {
112	0	int level = SCMapEnumNameToValue(level_s, SCSyslogGetLogLevelMap());
113	0	if (level != -1) {
114	0	alert_syslog_level = level;
115	0	}
116	0	}
117
118	0	const char *ident = ConfNodeLookupChildValue(conf, "identity");
119		/* if null we just pass that to openlog, which will then
120		* figure it out by itself. */
121
122	0	openlog(ident, LOG_PID\|LOG_NDELAY, facility);
123
124	0	OutputCtx *output_ctx = SCMalloc(sizeof(OutputCtx));
125	0	if (unlikely(output_ctx == NULL)) {
126	0	SCLogDebug("could not create new OutputCtx");
127	0	LogFileFreeCtx(logfile_ctx);
128	0	return result;
129	0	}
130	0	memset(output_ctx, 0x00, sizeof(OutputCtx));
131
132	0	output_ctx->data = logfile_ctx;
133	0	output_ctx->DeInit = AlertSyslogDeInitCtx;
134
135	0	SCLogInfo("Syslog output initialized");
136
137	0	result.ctx = output_ctx;
138	0	result.ok = true;
139	0	return result;
140	0	}
141
142		/**
143		* \brief Function to initialize the AlertSyslogThread and sets the output
144		* context pointer
145		*
146		* \param tv Pointer to the threadvars
147		* \param initdata Pointer to the output context
148		* \param data pointer to pointer to point to the AlertSyslogThread
149		*/
150		static TmEcode AlertSyslogThreadInit(ThreadVars t, const void initdata, void **data)
151	0	{
152	0	if(initdata == NULL) {
153	0	SCLogDebug("Error getting context for AlertSyslog. \"initdata\" "
154	0	"argument NULL");
155	0	return TM_ECODE_FAILED;
156	0	}
157
158	0	AlertSyslogThread *ast = SCMalloc(sizeof(AlertSyslogThread));
159	0	if (unlikely(ast == NULL))
160	0	return TM_ECODE_FAILED;
161
162	0	memset(ast, 0, sizeof(AlertSyslogThread));
163
164		/** Use the Output Context (file pointer and mutex) */
165	0	ast->file_ctx = ((OutputCtx *)initdata)->data;
166
167	0	data = (void )ast;
168	0	return TM_ECODE_OK;
169	0	}
170
171		/**
172		* \brief Function to deinitialize the AlertSyslogThread
173		*
174		* \param tv Pointer to the threadvars
175		* \param data pointer to the AlertSyslogThread to be cleared
176		*/
177		static TmEcode AlertSyslogThreadDeinit(ThreadVars t, void data)
178	0	{
179	0	AlertSyslogThread ast = (AlertSyslogThread )data;
180	0	if (ast == NULL) {
181	0	return TM_ECODE_OK;
182	0	}
183
184		/* clear memory */
185	0	memset(ast, 0, sizeof(AlertSyslogThread));
186
187	0	SCFree(ast);
188	0	return TM_ECODE_OK;
189	0	}
190
191		/**
192		* \brief Function which is called to print the IPv4 alerts to the syslog
193		*
194		* \param tv Pointer to the threadvars
195		* \param p Pointer to the packet
196		* \param data pointer to the AlertSyslogThread
197		*
198		* \return On succes return TM_ECODE_OK
199		*/
200		static TmEcode AlertSyslogIPv4(ThreadVars tv, const Packet p, void *data)
201	0	{
202	0	AlertSyslogThread ast = (AlertSyslogThread )data;
203	0	int i;
204	0	const char *action = "";
205
206	0	if (p->alerts.cnt == 0)
207	0	return TM_ECODE_OK;
208
209	0	char proto[16] = "";
210	0	const char *protoptr;
211	0	if (SCProtoNameValid(IPV4_GET_IPPROTO(p))) {
212	0	protoptr = known_proto[IPV4_GET_IPPROTO(p)];
213	0	} else {
214	0	snprintf(proto, sizeof(proto), "PROTO:%03" PRIu32, IPV4_GET_IPPROTO(p));
215	0	protoptr = proto;
216	0	}
217
218		/* Not sure if this mutex is needed around calls to syslog. */
219	0	SCMutexLock(&ast->file_ctx->fp_mutex);
220
221	0	for (i = 0; i < p->alerts.cnt; i++) {
222	0	const PacketAlert *pa = &p->alerts.alerts[i];
223	0	if (unlikely(pa->s == NULL)) {
224	0	continue;
225	0	}
226
227	0	char srcip[16], dstip[16];
228
229	0	PrintInet(AF_INET, (const void *)GET_IPV4_SRC_ADDR_PTR(p), srcip, sizeof(srcip));
230	0	PrintInet(AF_INET, (const void *)GET_IPV4_DST_ADDR_PTR(p), dstip, sizeof(dstip));
231
232	0	if ((pa->action & ACTION_DROP) && EngineModeIsIPS()) {
233	0	action = "[Drop] ";
234	0	} else if (pa->action & ACTION_DROP) {
235	0	action = "[wDrop] ";
236	0	}
237
238	0	syslog(alert_syslog_level, "%s[%" PRIu32 ":%" PRIu32 ":%"
239	0	PRIu32 "] %s [Classification: %s] [Priority: %"PRIu32"]"
240	0	" {%s} %s:%" PRIu32 " -> %s:%" PRIu32 "", action, pa->s->gid,
241	0	pa->s->id, pa->s->rev, pa->s->msg, pa->s->class_msg, pa->s->prio,
242	0	protoptr, srcip, p->sp, dstip, p->dp);
243	0	}
244	0	SCMutexUnlock(&ast->file_ctx->fp_mutex);
245
246	0	return TM_ECODE_OK;
247	0	}
248
249		/**
250		* \brief Function which is called to print the IPv6 alerts to the syslog
251		*
252		* \param tv Pointer to the threadvars
253		* \param p Pointer to the packet
254		* \param data pointer to the AlertSyslogThread
255		*
256		* \return On succes return TM_ECODE_OK
257		*/
258		static TmEcode AlertSyslogIPv6(ThreadVars tv, const Packet p, void *data)
259	0	{
260	0	AlertSyslogThread ast = (AlertSyslogThread )data;
261	0	int i;
262	0	const char *action = "";
263
264	0	if (p->alerts.cnt == 0)
265	0	return TM_ECODE_OK;
266
267	0	char proto[16] = "";
268	0	const char *protoptr;
269	0	if (SCProtoNameValid(IPV6_GET_L4PROTO(p))) {
270	0	protoptr = known_proto[IPV6_GET_L4PROTO(p)];
271	0	} else {
272	0	snprintf(proto, sizeof(proto), "PROTO:03%" PRIu32, IPV6_GET_L4PROTO(p));
273	0	protoptr = proto;
274	0	}
275
276	0	SCMutexLock(&ast->file_ctx->fp_mutex);
277
278	0	for (i = 0; i < p->alerts.cnt; i++) {
279	0	const PacketAlert *pa = &p->alerts.alerts[i];
280	0	if (unlikely(pa->s == NULL)) {
281	0	continue;
282	0	}
283
284	0	char srcip[46], dstip[46];
285
286	0	PrintInet(AF_INET6, (const void *)GET_IPV6_SRC_ADDR(p), srcip, sizeof(srcip));
287	0	PrintInet(AF_INET6, (const void *)GET_IPV6_DST_ADDR(p), dstip, sizeof(dstip));
288
289	0	if ((pa->action & ACTION_DROP) && EngineModeIsIPS()) {
290	0	action = "[Drop] ";
291	0	} else if (pa->action & ACTION_DROP) {
292	0	action = "[wDrop] ";
293	0	}
294
295	0	syslog(alert_syslog_level, "%s[%" PRIu32 ":%" PRIu32 ":%"
296	0	"" PRIu32 "] %s [Classification: %s] [Priority: %"
297	0	"" PRIu32 "] {%s} %s:%" PRIu32 " -> %s:%" PRIu32 "",
298	0	action, pa->s->gid, pa->s->id, pa->s->rev, pa->s->msg, pa->s->class_msg,
299	0	pa->s->prio, protoptr, srcip, p->sp,
300	0	dstip, p->dp);
301
302	0	}
303	0	SCMutexUnlock(&ast->file_ctx->fp_mutex);
304
305	0	return TM_ECODE_OK;
306	0	}
307
308		/**
309		* \brief Function which is called to print the decode alerts to the syslog
310		*
311		* \param tv Pointer to the threadvars
312		* \param p Pointer to the packet
313		* \param data pointer to the AlertSyslogThread
314		*
315		* \return On succes return TM_ECODE_OK
316		*/
317		static TmEcode AlertSyslogDecoderEvent(ThreadVars tv, const Packet p, void *data)
318	0	{
319	0	AlertSyslogThread ast = (AlertSyslogThread )data;
320	0	int i;
321	0	const char *action = "";
322
323	0	if (p->alerts.cnt == 0)
324	0	return TM_ECODE_OK;
325
326	0	SCMutexLock(&ast->file_ctx->fp_mutex);
327
328	0	char temp_buf_hdr[512];
329	0	char temp_buf_pkt[65] = "";
330	0	char temp_buf_tail[64];
331	0	char alert[2048] = "";
332
333	0	for (i = 0; i < p->alerts.cnt; i++) {
334	0	const PacketAlert *pa = &p->alerts.alerts[i];
335	0	if (unlikely(pa->s == NULL)) {
336	0	continue;
337	0	}
338
339	0	if ((pa->action & ACTION_DROP) && EngineModeIsIPS()) {
340	0	action = "[Drop] ";
341	0	} else if (pa->action & ACTION_DROP) {
342	0	action = "[wDrop] ";
343	0	}
344
345	0	snprintf(temp_buf_hdr, sizeof(temp_buf_hdr), "%s[%" PRIu32 ":%" PRIu32
346	0	":%" PRIu32 "] %s [Classification: %s] [Priority: %" PRIu32
347	0	"] [**] [Raw pkt: ", action, pa->s->gid, pa->s->id, pa->s->rev, pa->s->msg,
348	0	pa->s->class_msg, pa->s->prio);
349	0	strlcpy(alert, temp_buf_hdr, sizeof(alert));
350
351	0	PrintRawLineHexBuf(temp_buf_pkt, sizeof(temp_buf_pkt), GET_PKT_DATA(p), GET_PKT_LEN(p) < 32 ? GET_PKT_LEN(p) : 32);
352	0	strlcat(alert, temp_buf_pkt, sizeof(alert));
353
354	0	if (p->pcap_cnt != 0) {
355	0	snprintf(temp_buf_tail, sizeof(temp_buf_tail), "] [pcap file packet: %"PRIu64"]",
356	0	p->pcap_cnt);
357	0	} else {
358	0	temp_buf_tail[0] = ']';
359	0	temp_buf_tail[1] = '\0';
360	0	}
361	0	strlcat(alert, temp_buf_tail, sizeof(alert));
362
363	0	syslog(alert_syslog_level, "%s", alert);
364	0	}
365	0	SCMutexUnlock(&ast->file_ctx->fp_mutex);
366
367	0	return TM_ECODE_OK;
368	0	}
369
370		static int AlertSyslogCondition(ThreadVars tv, void thread_data, const Packet *p)
371	0	{
372	0	return (p->alerts.cnt > 0 ? TRUE : FALSE);
373	0	}
374
375		static int AlertSyslogLogger(ThreadVars tv, void thread_data, const Packet *p)
376	0	{
377	0	if (PKT_IS_IPV4(p)) {
378	0	return AlertSyslogIPv4(tv, p, thread_data);
379	0	} else if (PKT_IS_IPV6(p)) {
380	0	return AlertSyslogIPv6(tv, p, thread_data);
381	0	} else if (p->events.cnt > 0) {
382	0	return AlertSyslogDecoderEvent(tv, p, thread_data);
383	0	}
384
385	0	return TM_ECODE_OK;
386	0	}
387
388		#endif /* !OS_WIN32 */
389
390		/** \brief Function to register the AlertSyslog module */
391		void AlertSyslogRegister (void)
392	74	{
393	74	#ifndef OS_WIN32
394	74	OutputRegisterPacketModule(LOGGER_ALERT_SYSLOG, MODULE_NAME, "syslog",
395	74	AlertSyslogInitCtx, AlertSyslogLogger, AlertSyslogCondition,
396		AlertSyslogThreadInit, AlertSyslogThreadDeinit, NULL);
397	74	#endif /* !OS_WIN32 */
398	74	}