[mirror_frr.git] / lib / agentx.c

/* SNMP support
 * Copyright (C) 2012 Vincent Bernat <bernat@luffy.cx>
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * GNU Zebra 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 along
 * with this program; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <zebra.h>

#ifdef SNMP_AGENTX
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/snmp_vars.h>

#include "command.h"
#include "smux.h"
#include "memory.h"
#include "linklist.h"
#include "version.h"
#include "lib_errors.h"

static int agentx_enabled = 0;

static struct thread_master *agentx_tm;
static struct thread *timeout_thr = NULL;
static struct list *events = NULL;

static void agentx_events_update(void);

static int agentx_timeout(struct thread *t)
{
	timeout_thr = NULL;

	snmp_timeout();
	run_alarms();
	netsnmp_check_outstanding_agent_requests();
	agentx_events_update();
	return 0;
}

static int agentx_read(struct thread *t)
{
	fd_set fds;
	int flags, new_flags = 0;
	int nonblock = false;
	struct listnode *ln = THREAD_ARG(t);
	list_delete_node(events, ln);

	/* fix for non blocking socket */
	flags = fcntl(THREAD_FD(t), F_GETFL, 0);
	if (-1 == flags) {
		flog_err(EC_LIB_SYSTEM_CALL, "Failed to get FD settings fcntl: %s(%d)",
			 strerror(errno), errno);
		return -1;
	}

	if (flags & O_NONBLOCK)
		nonblock = true;
	else
		new_flags = fcntl(THREAD_FD(t), F_SETFL, flags | O_NONBLOCK);

	if (new_flags == -1)
		flog_err(EC_LIB_SYSTEM_CALL, "Failed to set snmp fd non blocking: %s(%d)",
			 strerror(errno), errno);

	FD_ZERO(&fds);
	FD_SET(THREAD_FD(t), &fds);
	snmp_read(&fds);

	/* Reset the flag */
	if (!nonblock) {
		new_flags = fcntl(THREAD_FD(t), F_SETFL, flags);

		if (new_flags == -1)
			flog_err(
				EC_LIB_SYSTEM_CALL,
				"Failed to set snmp fd back to original settings: %s(%d)",
				strerror(errno), errno);
	}

	netsnmp_check_outstanding_agent_requests();
	agentx_events_update();
	return 0;
}

static void agentx_events_update(void)
{
	int maxfd = 0;
	int block = 1;
	struct timeval timeout = {.tv_sec = 0, .tv_usec = 0};
	fd_set fds;
	struct listnode *ln;
	struct thread *thr;
	int fd, thr_fd;

	THREAD_OFF(timeout_thr);

	FD_ZERO(&fds);
	snmp_select_info(&maxfd, &fds, &timeout, &block);

	if (!block) {
		timeout_thr = NULL;
		thread_add_timer_tv(agentx_tm, agentx_timeout, NULL, &timeout,
				    &timeout_thr);
	}

	ln = listhead(events);
	thr = ln ? listgetdata(ln) : NULL;
	thr_fd = thr ? THREAD_FD(thr) : -1;

	/* "two-pointer" / two-list simultaneous iteration
	 * ln/thr/thr_fd point to the next existing event listener to hit while
	 * fd counts to catch up */
	for (fd = 0; fd < maxfd; fd++) {
		/* caught up */
		if (thr_fd == fd) {
			struct listnode *nextln = listnextnode(ln);
			if (!FD_ISSET(fd, &fds)) {
				thread_cancel(&thr);
				list_delete_node(events, ln);
			}
			ln = nextln;
			thr = ln ? listgetdata(ln) : NULL;
			thr_fd = thr ? THREAD_FD(thr) : -1;
		}
		/* need listener, but haven't hit one where it would be */
		else if (FD_ISSET(fd, &fds)) {
			struct listnode *newln;
			thr = NULL;
			thread_add_read(agentx_tm, agentx_read, NULL, fd, &thr);
			newln = listnode_add_before(events, ln, thr);
			thr->arg = newln;
		}
	}

	/* leftover event listeners at this point have fd > maxfd, delete them
	 */
	while (ln) {
		struct listnode *nextln = listnextnode(ln);
		thr = listgetdata(ln);
		thread_cancel(&thr);
		list_delete_node(events, ln);
		ln = nextln;
	}
}

/* AgentX node. */
static int config_write_agentx(struct vty *vty);
static struct cmd_node agentx_node = {
	.name = "smux",
	.node = SMUX_NODE,
	.prompt = "",
	.config_write = config_write_agentx,
};

/* Logging NetSNMP messages */
static int agentx_log_callback(int major, int minor, void *serverarg,
			       void *clientarg)
{
	struct snmp_log_message *slm = (struct snmp_log_message *)serverarg;
	char *msg = XSTRDUP(MTYPE_TMP, slm->msg);
	if (msg)
		msg[strlen(msg) - 1] = '\0';
	switch (slm->priority) {
	case LOG_EMERG:
		flog_err(EC_LIB_SNMP, "snmp[emerg]: %s", msg ? msg : slm->msg);
		break;
	case LOG_ALERT:
		flog_err(EC_LIB_SNMP, "snmp[alert]: %s", msg ? msg : slm->msg);
		break;
	case LOG_CRIT:
		flog_err(EC_LIB_SNMP, "snmp[crit]: %s", msg ? msg : slm->msg);
		break;
	case LOG_ERR:
		flog_err(EC_LIB_SNMP, "snmp[err]: %s", msg ? msg : slm->msg);
		break;
	case LOG_WARNING:
		flog_warn(EC_LIB_SNMP, "snmp[warning]: %s",
			  msg ? msg : slm->msg);
		break;
	case LOG_NOTICE:
		zlog_notice("snmp[notice]: %s", msg ? msg : slm->msg);
		break;
	case LOG_INFO:
		zlog_info("snmp[info]: %s", msg ? msg : slm->msg);
		break;
	case LOG_DEBUG:
		zlog_debug("snmp[debug]: %s", msg ? msg : slm->msg);
		break;
	}
	XFREE(MTYPE_TMP, msg);
	return SNMP_ERR_NOERROR;
}

static int config_write_agentx(struct vty *vty)
{
	if (agentx_enabled)
		vty_out(vty, "agentx\n");
	return 1;
}

DEFUN (agentx_enable,
       agentx_enable_cmd,
       "agentx",
       "SNMP AgentX protocol settings\n")
{
	if (!agentx_enabled) {
		init_snmp(FRR_SMUX_NAME);
		events = list_new();
		agentx_events_update();
		agentx_enabled = 1;
	}

	return CMD_SUCCESS;
}

DEFUN (no_agentx,
       no_agentx_cmd,
       "no agentx",
       NO_STR
       "SNMP AgentX protocol settings\n")
{
	if (!agentx_enabled)
		return CMD_SUCCESS;
	vty_out(vty, "SNMP AgentX support cannot be disabled once enabled\n");
	return CMD_WARNING_CONFIG_FAILED;
}

void smux_init(struct thread_master *tm)
{
	agentx_tm = tm;

	netsnmp_enable_subagent();
	snmp_disable_log();
	snmp_enable_calllog();
	snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_LOGGING,
			       agentx_log_callback, NULL);
	init_agent(FRR_SMUX_NAME);

	install_node(&agentx_node);
	install_element(CONFIG_NODE, &agentx_enable_cmd);
	install_element(CONFIG_NODE, &no_agentx_cmd);
}

void smux_register_mib(const char *descr, struct variable *var, size_t width,
		       int num, oid name[], size_t namelen)
{
	register_mib(descr, var, width, num, name, namelen);
}

int smux_trap(struct variable *vp, size_t vp_len, const oid *ename,
	      size_t enamelen, const oid *name, size_t namelen,
	      const oid *iname, size_t inamelen,
	      const struct trap_object *trapobj, size_t trapobjlen,
	      uint8_t sptrap)
{
	oid objid_snmptrap[] = {1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0};
	size_t objid_snmptrap_len = sizeof(objid_snmptrap) / sizeof(oid);
	oid notification_oid[MAX_OID_LEN];
	size_t notification_oid_len;
	unsigned int i;

	netsnmp_variable_list *notification_vars = NULL;
	if (!agentx_enabled)
		return 0;

	/* snmpTrapOID */
	oid_copy(notification_oid, ename, enamelen);
	notification_oid[enamelen] = sptrap;
	notification_oid_len = enamelen + 1;
	snmp_varlist_add_variable(&notification_vars, objid_snmptrap,
				  objid_snmptrap_len, ASN_OBJECT_ID,
				  (uint8_t *)notification_oid,
				  notification_oid_len * sizeof(oid));

	/* Provided bindings */
	for (i = 0; i < trapobjlen; i++) {
		unsigned int j;
		oid oid[MAX_OID_LEN];
		size_t oid_len, onamelen;
		uint8_t *val;
		size_t val_len;
		WriteMethod *wm = NULL;
		struct variable cvp;

		/* Make OID. */
		if (trapobj[i].namelen > 0) {
			/* Columnar object */
			onamelen = trapobj[i].namelen;
			oid_copy(oid, name, namelen);
			oid_copy(oid + namelen, trapobj[i].name, onamelen);
			oid_copy(oid + namelen + onamelen, iname, inamelen);
			oid_len = namelen + onamelen + inamelen;
		} else {
			/* Scalar object */
			onamelen = trapobj[i].namelen * (-1);
			oid_copy(oid, name, namelen);
			oid_copy(oid + namelen, trapobj[i].name, onamelen);
			oid[onamelen + namelen] = 0;
			oid_len = namelen + onamelen + 1;
		}

		/* Locate the appropriate function and type in the MIB registry.
		 */
		for (j = 0; j < vp_len; j++) {
			if (oid_compare(trapobj[i].name, onamelen, vp[j].name,
					vp[j].namelen)
			    != 0)
				continue;
			/* We found the appropriate variable in the MIB
			 * registry. */
			oid_copy(cvp.name, name, namelen);
			oid_copy(cvp.name + namelen, vp[j].name, vp[j].namelen);
			cvp.namelen = namelen + vp[j].namelen;
			cvp.type = vp[j].type;
			cvp.magic = vp[j].magic;
			cvp.acl = vp[j].acl;
			cvp.findVar = vp[j].findVar;
			/* Grab the result. */
			val = cvp.findVar(&cvp, oid, &oid_len, 1, &val_len,
					  &wm);
			if (!val)
				break;
			snmp_varlist_add_variable(&notification_vars, oid,
						  oid_len, vp[j].type, val,
						  val_len);
			break;
		}
	}


	send_v2trap(notification_vars);
	snmp_free_varbind(notification_vars);
	agentx_events_update();
	return 1;
}

#endif /* SNMP_AGENTX */
Commit	Line	Data
d6be5fb9 VB	1	/* SNMP support
	2	* Copyright (C) 2012 Vincent Bernat <bernat@luffy.cx>
	3	*
	4	* This file is part of GNU Zebra.
	5	*
	6	* GNU Zebra is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2, or (at your option) any
	9	* later version.
	10	*
	11	* GNU Zebra is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
896014f4 DL	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; see the file COPYING; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
d6be5fb9 VB	19	*/
	20
	21	#include <zebra.h>
	22
5986b66b	23	#ifdef SNMP_AGENTX
d6be5fb9 VB	24	#include <net-snmp/net-snmp-config.h>
d6be5fb9 VB	25	#include <net-snmp/net-snmp-includes.h>
56e2c5e8 DL	26	#include <net-snmp/agent/net-snmp-agent-includes.h>
56e2c5e8 DL	27	#include <net-snmp/agent/snmp_vars.h>
d6be5fb9 VB	28
	29	#include "command.h"
	30	#include "smux.h"
d11f748b	31	#include "memory.h"
56e2c5e8	32	#include "linklist.h"
ae435b19	33	#include "version.h"
220d7368	34	#include "lib_errors.h"
d6be5fb9	35
56e2c5e8 DL	36	static int agentx_enabled = 0;
	37
	38	static struct thread_master *agentx_tm;
	39	static struct thread *timeout_thr = NULL;
	40	static struct list *events = NULL;
	41
	42	static void agentx_events_update(void);
	43
d62a17ae	44	static int agentx_timeout(struct thread *t)
56e2c5e8	45	{
d62a17ae	46	timeout_thr = NULL;
56e2c5e8	47
d62a17ae	48	snmp_timeout();
	49	run_alarms();
	50	netsnmp_check_outstanding_agent_requests();
	51	agentx_events_update();
	52	return 0;
56e2c5e8 DL	53	}
56e2c5e8 DL	54
d62a17ae	55	static int agentx_read(struct thread *t)
56e2c5e8	56	{
d62a17ae	57	fd_set fds;
19d95d40	58	int flags, new_flags = 0;
3b717261	59	int nonblock = false;
d62a17ae	60	struct listnode *ln = THREAD_ARG(t);
d62a17ae	61	list_delete_node(events, ln);
56e2c5e8	62
3b717261	63	/* fix for non blocking socket */
3b717261	64	flags = fcntl(THREAD_FD(t), F_GETFL, 0);
19d95d40 DS	65	if (-1 == flags) {
	66	flog_err(EC_LIB_SYSTEM_CALL, "Failed to get FD settings fcntl: %s(%d)",
	67	strerror(errno), errno);
3b717261	68	return -1;
19d95d40	69	}
3b717261	70
	71	if (flags & O_NONBLOCK)
	72	nonblock = true;
	73	else
19d95d40 DS	74	new_flags = fcntl(THREAD_FD(t), F_SETFL, flags \| O_NONBLOCK);
	75
	76	if (new_flags == -1)
	77	flog_err(EC_LIB_SYSTEM_CALL, "Failed to set snmp fd non blocking: %s(%d)",
	78	strerror(errno), errno);
3b717261	79
d62a17ae	80	FD_ZERO(&fds);
	81	FD_SET(THREAD_FD(t), &fds);
	82	snmp_read(&fds);
56e2c5e8	83
3b717261	84	/* Reset the flag */
19d95d40 DS	85	if (!nonblock) {
	86	new_flags = fcntl(THREAD_FD(t), F_SETFL, flags);
	87
	88	if (new_flags == -1)
	89	flog_err(
	90	EC_LIB_SYSTEM_CALL,
	91	"Failed to set snmp fd back to original settings: %s(%d)",
	92	strerror(errno), errno);
	93	}
3b717261	94
d62a17ae	95	netsnmp_check_outstanding_agent_requests();
	96	agentx_events_update();
	97	return 0;
56e2c5e8 DL	98	}
56e2c5e8 DL	99
d62a17ae	100	static void agentx_events_update(void)
56e2c5e8	101	{
d62a17ae	102	int maxfd = 0;
	103	int block = 1;
	104	struct timeval timeout = {.tv_sec = 0, .tv_usec = 0};
	105	fd_set fds;
	106	struct listnode *ln;
	107	struct thread *thr;
	108	int fd, thr_fd;
	109
	110	THREAD_OFF(timeout_thr);
	111
	112	FD_ZERO(&fds);
	113	snmp_select_info(&maxfd, &fds, &timeout, &block);
	114
	115	if (!block) {
	116	timeout_thr = NULL;
	117	thread_add_timer_tv(agentx_tm, agentx_timeout, NULL, &timeout,
	118	&timeout_thr);
	119	}
	120
	121	ln = listhead(events);
	122	thr = ln ? listgetdata(ln) : NULL;
	123	thr_fd = thr ? THREAD_FD(thr) : -1;
	124
	125	/* "two-pointer" / two-list simultaneous iteration
	126	* ln/thr/thr_fd point to the next existing event listener to hit while
	127	* fd counts to catch up */
	128	for (fd = 0; fd < maxfd; fd++) {
	129	/* caught up */
	130	if (thr_fd == fd) {
	131	struct listnode *nextln = listnextnode(ln);
	132	if (!FD_ISSET(fd, &fds)) {
b3d6bc6e	133	thread_cancel(&thr);
d62a17ae	134	list_delete_node(events, ln);
	135	}
	136	ln = nextln;
	137	thr = ln ? listgetdata(ln) : NULL;
	138	thr_fd = thr ? THREAD_FD(thr) : -1;
	139	}
	140	/* need listener, but haven't hit one where it would be */
	141	else if (FD_ISSET(fd, &fds)) {
	142	struct listnode *newln;
	143	thr = NULL;
	144	thread_add_read(agentx_tm, agentx_read, NULL, fd, &thr);
	145	newln = listnode_add_before(events, ln, thr);
	146	thr->arg = newln;
	147	}
	148	}
	149
	150	/* leftover event listeners at this point have fd > maxfd, delete them
	151	*/
	152	while (ln) {
	153	struct listnode *nextln = listnextnode(ln);
b3d6bc6e MS	154	thr = listgetdata(ln);
b3d6bc6e MS	155	thread_cancel(&thr);
d62a17ae	156	list_delete_node(events, ln);
	157	ln = nextln;
	158	}
56e2c5e8	159	}
d6be5fb9 VB	160
d6be5fb9 VB	161	/* AgentX node. */
612c2c15	162	static int config_write_agentx(struct vty *vty);
62b346ee	163	static struct cmd_node agentx_node = {
f4b8291f	164	.name = "smux",
62b346ee DL	165	.node = SMUX_NODE,
62b346ee DL	166	.prompt = "",
612c2c15	167	.config_write = config_write_agentx,
62b346ee	168	};
d6be5fb9 VB	169
d6be5fb9 VB	170	/* Logging NetSNMP messages */
d62a17ae	171	static int agentx_log_callback(int major, int minor, void *serverarg,
d62a17ae	172	void *clientarg)
d6be5fb9	173	{
d62a17ae	174	struct snmp_log_message slm = (struct snmp_log_message )serverarg;
	175	char *msg = XSTRDUP(MTYPE_TMP, slm->msg);
	176	if (msg)
	177	msg[strlen(msg) - 1] = '\0';
	178	switch (slm->priority) {
	179	case LOG_EMERG:
1c50c1c0	180	flog_err(EC_LIB_SNMP, "snmp[emerg]: %s", msg ? msg : slm->msg);
d62a17ae	181	break;
d62a17ae	182	case LOG_ALERT:
1c50c1c0	183	flog_err(EC_LIB_SNMP, "snmp[alert]: %s", msg ? msg : slm->msg);
d62a17ae	184	break;
d62a17ae	185	case LOG_CRIT:
1c50c1c0	186	flog_err(EC_LIB_SNMP, "snmp[crit]: %s", msg ? msg : slm->msg);
d62a17ae	187	break;
d62a17ae	188	case LOG_ERR:
1c50c1c0	189	flog_err(EC_LIB_SNMP, "snmp[err]: %s", msg ? msg : slm->msg);
d62a17ae	190	break;
d62a17ae	191	case LOG_WARNING:
450971aa	192	flog_warn(EC_LIB_SNMP, "snmp[warning]: %s",
ade6974d	193	msg ? msg : slm->msg);
d62a17ae	194	break;
	195	case LOG_NOTICE:
	196	zlog_notice("snmp[notice]: %s", msg ? msg : slm->msg);
	197	break;
	198	case LOG_INFO:
	199	zlog_info("snmp[info]: %s", msg ? msg : slm->msg);
	200	break;
	201	case LOG_DEBUG:
	202	zlog_debug("snmp[debug]: %s", msg ? msg : slm->msg);
	203	break;
	204	}
	205	XFREE(MTYPE_TMP, msg);
	206	return SNMP_ERR_NOERROR;
d6be5fb9 VB	207	}
d6be5fb9 VB	208
d62a17ae	209	static int config_write_agentx(struct vty *vty)
d6be5fb9	210	{
d62a17ae	211	if (agentx_enabled)
	212	vty_out(vty, "agentx\n");
	213	return 1;
d6be5fb9 VB	214	}
	215
	216	DEFUN (agentx_enable,
	217	agentx_enable_cmd,
	218	"agentx",
007b0667	219	"SNMP AgentX protocol settings\n")
d6be5fb9	220	{
d62a17ae	221	if (!agentx_enabled) {
	222	init_snmp(FRR_SMUX_NAME);
	223	events = list_new();
	224	agentx_events_update();
	225	agentx_enabled = 1;
d62a17ae	226	}
5fedee18	227
d62a17ae	228	return CMD_SUCCESS;
d6be5fb9 VB	229	}
	230
	231	DEFUN (no_agentx,
	232	no_agentx_cmd,
	233	"no agentx",
	234	NO_STR
007b0667	235	"SNMP AgentX protocol settings\n")
d6be5fb9	236	{
d62a17ae	237	if (!agentx_enabled)
	238	return CMD_SUCCESS;
	239	vty_out(vty, "SNMP AgentX support cannot be disabled once enabled\n");
	240	return CMD_WARNING_CONFIG_FAILED;
d6be5fb9 VB	241	}
d6be5fb9 VB	242
d62a17ae	243	void smux_init(struct thread_master *tm)
d6be5fb9	244	{
d62a17ae	245	agentx_tm = tm;
	246
	247	netsnmp_enable_subagent();
	248	snmp_disable_log();
	249	snmp_enable_calllog();
	250	snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_LOGGING,
	251	agentx_log_callback, NULL);
	252	init_agent(FRR_SMUX_NAME);
	253
612c2c15	254	install_node(&agentx_node);
d62a17ae	255	install_element(CONFIG_NODE, &agentx_enable_cmd);
d62a17ae	256	install_element(CONFIG_NODE, &no_agentx_cmd);
d6be5fb9 VB	257	}
d6be5fb9 VB	258
d62a17ae	259	void smux_register_mib(const char descr, struct variable var, size_t width,
d62a17ae	260	int num, oid name[], size_t namelen)
d6be5fb9	261	{
d62a17ae	262	register_mib(descr, var, width, num, name, namelen);
d6be5fb9 VB	263	}
d6be5fb9 VB	264
d62a17ae	265	int smux_trap(struct variable vp, size_t vp_len, const oid ename,
	266	size_t enamelen, const oid *name, size_t namelen,
	267	const oid *iname, size_t inamelen,
	268	const struct trap_object *trapobj, size_t trapobjlen,
d7c0a89a	269	uint8_t sptrap)
d6be5fb9	270	{
d62a17ae	271	oid objid_snmptrap[] = {1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0};
0d6f7fd6	272	size_t objid_snmptrap_len = sizeof(objid_snmptrap) / sizeof(oid);
d62a17ae	273	oid notification_oid[MAX_OID_LEN];
	274	size_t notification_oid_len;
	275	unsigned int i;
	276
	277	netsnmp_variable_list *notification_vars = NULL;
	278	if (!agentx_enabled)
	279	return 0;
	280
	281	/* snmpTrapOID */
	282	oid_copy(notification_oid, ename, enamelen);
	283	notification_oid[enamelen] = sptrap;
	284	notification_oid_len = enamelen + 1;
	285	snmp_varlist_add_variable(&notification_vars, objid_snmptrap,
	286	objid_snmptrap_len, ASN_OBJECT_ID,
d7c0a89a	287	(uint8_t *)notification_oid,
d62a17ae	288	notification_oid_len * sizeof(oid));
	289
	290	/* Provided bindings */
	291	for (i = 0; i < trapobjlen; i++) {
	292	unsigned int j;
	293	oid oid[MAX_OID_LEN];
	294	size_t oid_len, onamelen;
d7c0a89a	295	uint8_t *val;
d62a17ae	296	size_t val_len;
	297	WriteMethod *wm = NULL;
	298	struct variable cvp;
	299
	300	/* Make OID. */
	301	if (trapobj[i].namelen > 0) {
	302	/* Columnar object */
	303	onamelen = trapobj[i].namelen;
	304	oid_copy(oid, name, namelen);
	305	oid_copy(oid + namelen, trapobj[i].name, onamelen);
	306	oid_copy(oid + namelen + onamelen, iname, inamelen);
	307	oid_len = namelen + onamelen + inamelen;
	308	} else {
	309	/* Scalar object */
	310	onamelen = trapobj[i].namelen * (-1);
	311	oid_copy(oid, name, namelen);
	312	oid_copy(oid + namelen, trapobj[i].name, onamelen);
	313	oid[onamelen + namelen] = 0;
	314	oid_len = namelen + onamelen + 1;
	315	}
	316
	317	/* Locate the appropriate function and type in the MIB registry.
	318	*/
	319	for (j = 0; j < vp_len; j++) {
	320	if (oid_compare(trapobj[i].name, onamelen, vp[j].name,
	321	vp[j].namelen)
	322	!= 0)
	323	continue;
	324	/* We found the appropriate variable in the MIB
	325	* registry. */
	326	oid_copy(cvp.name, name, namelen);
	327	oid_copy(cvp.name + namelen, vp[j].name, vp[j].namelen);
	328	cvp.namelen = namelen + vp[j].namelen;
	329	cvp.type = vp[j].type;
	330	cvp.magic = vp[j].magic;
	331	cvp.acl = vp[j].acl;
	332	cvp.findVar = vp[j].findVar;
	333	/* Grab the result. */
	334	val = cvp.findVar(&cvp, oid, &oid_len, 1, &val_len,
	335	&wm);
	336	if (!val)
	337	break;
	338	snmp_varlist_add_variable(&notification_vars, oid,
	339	oid_len, vp[j].type, val,
	340	val_len);
	341	break;
	342	}
b7c0d065	343	}
b7c0d065 VB	344
b7c0d065 VB	345
d62a17ae	346	send_v2trap(notification_vars);
	347	snmp_free_varbind(notification_vars);
	348	agentx_events_update();
	349	return 1;
d6be5fb9 VB	350	}
d6be5fb9 VB	351
5986b66b	352	#endif /* SNMP_AGENTX */