2 * Copyright (c) 2001-2003
3 * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
6 * Author: Harti Brandt <harti@freebsd.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $Begemot: bsnmp/snmpd/main.c,v 1.100 2006/02/14 09:04:20 brandt_h Exp $
34 #include <sys/queue.h>
35 #include <sys/param.h>
37 #include <sys/ucred.h>
52 #ifdef USE_TCPWRAPPERS
53 #include <arpa/inet.h>
63 #define PATH_PID "/var/run/%s.pid"
64 #define PATH_CONFIG "/etc/%s.config"
65 #define PATH_ENGINE "/var/%s.engine"
67 uint64_t this_tick; /* start of processing of current packet (absolute) */
68 uint64_t start_tick; /* start of processing */
70 struct systemg systemg = {
72 { 8, { 1, 3, 6, 1, 4, 1, 1115, 7352 }},
77 struct debug debug = {
79 LOG_DEBUG, /* log_pri */
83 struct snmpd snmpd = {
88 {0, 0, 0, 0}, /* trap1addr */
89 VERS_ENABLE_ALL,/* version_enable */
91 struct snmpd_stats snmpd_stats;
93 struct snmpd_usmstat snmpd_usmstats;
96 struct snmp_engine snmpd_engine;
99 int32_t snmp_serial_no;
101 /* search path for config files */
102 const char *syspath = PATH_SYSCONFIG;
104 /* list of all loaded modules */
105 struct lmodules lmodules = TAILQ_HEAD_INITIALIZER(lmodules);
107 /* list of loaded modules during start-up in the order they were loaded */
108 static struct lmodules modules_start = TAILQ_HEAD_INITIALIZER(modules_start);
110 /* list of all known communities */
111 struct community_list community_list = TAILQ_HEAD_INITIALIZER(community_list);
113 /* list of all known USM users */
114 struct usm_userlist usm_userlist = SLIST_HEAD_INITIALIZER(usm_userlist);
116 /* A list of all VACM users configured, including v1, v2c and v3 */
117 struct vacm_userlist vacm_userlist = SLIST_HEAD_INITIALIZER(vacm_userlist);
119 /* A list of all VACM groups */
120 struct vacm_grouplist vacm_grouplist = SLIST_HEAD_INITIALIZER(vacm_grouplist);
122 static struct vacm_group vacm_default_group = {
126 /* The list of configured access entries */
127 struct vacm_accesslist vacm_accesslist = TAILQ_HEAD_INITIALIZER(vacm_accesslist);
129 /* The list of configured views */
130 struct vacm_viewlist vacm_viewlist = SLIST_HEAD_INITIALIZER(vacm_viewlist);
132 /* The list of configured contexts */
133 struct vacm_contextlist vacm_contextlist =
134 SLIST_HEAD_INITIALIZER(vacm_contextlist);
136 /* list of all installed object resources */
137 struct objres_list objres_list = TAILQ_HEAD_INITIALIZER(objres_list);
139 /* community value generator */
140 static u_int next_community_index = 1;
142 /* list of all known ranges */
143 struct idrange_list idrange_list = TAILQ_HEAD_INITIALIZER(idrange_list);
145 /* identifier generator */
146 u_int next_idrange = 1;
148 /* list of all current timers */
149 struct timer_list timer_list = LIST_HEAD_INITIALIZER(timer_list);
151 /* list of file descriptors */
152 struct fdesc_list fdesc_list = LIST_HEAD_INITIALIZER(fdesc_list);
154 /* program arguments */
155 static char **progargs;
156 static int nprogargs;
158 /* current community */
160 static struct community *comm;
162 /* current USM user */
163 struct usm_user *usm_user;
166 static char config_file[MAXPATHLEN + 1];
167 static char pid_file[MAXPATHLEN + 1];
168 char engine_file[MAXPATHLEN + 1];
170 #ifndef USE_LIBBEGEMOT
172 static evContext evctx;
176 static sigset_t blocked_sigs;
178 /* signal handling */
180 #define WORK_DOINFO 0x0001
181 #define WORK_RECONFIG 0x0002
184 static const struct asn_oid
185 oid_snmpMIB = OIDX_snmpMIB,
186 oid_begemotSnmpd = OIDX_begemotSnmpd,
187 oid_coldStart = OIDX_coldStart,
188 oid_authenticationFailure = OIDX_authenticationFailure;
190 const struct asn_oid oid_zeroDotZero = { 2, { 0, 0 }};
192 const struct asn_oid oid_usmUnknownEngineIDs =
193 { 11, { 1, 3, 6, 1, 6, 3, 15, 1, 1, 4, 0}};
195 const struct asn_oid oid_usmNotInTimeWindows =
196 { 11, { 1, 3, 6, 1, 6, 3, 15, 1, 1, 2, 0}};
198 /* request id generator for traps */
202 static const char usgtxt[] = "\
203 Begemot simple SNMP daemon. Copyright (c) 2001-2002 Fraunhofer Institute for\n\
204 Open Communication Systems (FhG Fokus). All rights reserved.\n\
205 Copyright (c) 2010 The FreeBSD Foundation. All rights reserved.\n\
206 usage: snmpd [-dh] [-c file] [-D options] [-e file] [-I path]\n\
207 [-l prefix] [-m variable=value] [-p file]\n\
209 -d don't daemonize\n\
210 -h print this info\n\
211 -c file specify configuration file\n\
212 -D options debugging options\n\
213 -e file specify engine id file\n\
214 -I path system include path\n\
215 -l prefix default basename for pid and config file\n\
216 -m var=val define variable\n\
217 -p file specify pid file\n\
220 /* hosts_access(3) request */
221 #ifdef USE_TCPWRAPPERS
222 static struct request_info req;
226 extern const struct transport_def udp_trans;
227 extern const struct transport_def lsock_trans;
229 struct transport_list transport_list = TAILQ_HEAD_INITIALIZER(transport_list);
231 /* forward declarations */
232 static void snmp_printf_func(const char *fmt, ...);
233 static void snmp_error_func(const char *err, ...);
234 static void snmp_debug_func(const char *err, ...);
235 static void asn_error_func(const struct asn_buf *b, const char *err, ...);
238 * Allocate rx/tx buffer. We allocate one byte more for rx.
245 if ((buf = malloc(tx ? snmpd.txbuf : snmpd.rxbuf)) == NULL) {
246 syslog(LOG_CRIT, "cannot allocate buffer");
248 snmpd_stats.noTxbuf++;
250 snmpd_stats.noRxbuf++;
257 * Return the buffer size.
262 return (tx ? snmpd.txbuf : snmpd.rxbuf);
266 * Prepare a PDU for output
269 snmp_output(struct snmp_pdu *pdu, u_char *sndbuf, size_t *sndlen,
272 struct asn_buf resp_b;
274 resp_b.asn_ptr = sndbuf;
275 resp_b.asn_len = snmpd.txbuf;
277 if (snmp_pdu_encode(pdu, &resp_b) != 0) {
278 syslog(LOG_ERR, "cannot encode message");
281 if (debug.dump_pdus) {
282 snmp_printf("%s <- ", dest);
285 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
289 * Check USM PDU header credentials against local SNMP Engine & users.
291 static enum snmp_code
292 snmp_pdu_auth_user(struct snmp_pdu *pdu)
297 /* un-authenticated snmpEngineId discovery */
298 if (pdu->engine.engine_len == 0 && strlen(pdu->user.sec_name) == 0) {
299 pdu->engine.engine_len = snmpd_engine.engine_len;
300 memcpy(pdu->engine.engine_id, snmpd_engine.engine_id,
301 snmpd_engine.engine_len);
302 pdu->engine.engine_boots = snmpd_engine.engine_boots;
303 pdu->engine.engine_time = snmpd_engine.engine_time;
304 pdu->flags |= SNMP_MSG_AUTODISCOVER;
305 return (SNMP_CODE_OK);
308 if ((usm_user = usm_find_user(pdu->engine.engine_id,
309 pdu->engine.engine_len, pdu->user.sec_name)) == NULL ||
310 usm_user->status != 1 /* active */)
311 return (SNMP_CODE_BADUSER);
313 if (usm_user->user_engine_len != snmpd_engine.engine_len ||
314 memcmp(usm_user->user_engine_id, snmpd_engine.engine_id,
315 snmpd_engine.engine_len) != 0)
316 return (SNMP_CODE_BADENGINE);
318 pdu->user.priv_proto = usm_user->suser.priv_proto;
319 memcpy(pdu->user.priv_key, usm_user->suser.priv_key,
320 sizeof(pdu->user.priv_key));
322 /* authenticated snmpEngineId discovery */
323 if ((pdu->flags & SNMP_MSG_AUTH_FLAG) != 0) {
324 etime = (get_ticks() - start_tick) / 100ULL;
325 if (etime < INT32_MAX)
326 snmpd_engine.engine_time = etime;
328 start_tick = get_ticks();
330 snmpd_engine.engine_time = start_tick;
333 pdu->user.auth_proto = usm_user->suser.auth_proto;
334 memcpy(pdu->user.auth_key, usm_user->suser.auth_key,
335 sizeof(pdu->user.auth_key));
337 if (pdu->engine.engine_boots == 0 &&
338 pdu->engine.engine_time == 0) {
339 pdu->flags |= SNMP_MSG_AUTODISCOVER;
340 return (SNMP_CODE_OK);
343 if (pdu->engine.engine_boots != snmpd_engine.engine_boots ||
344 abs(pdu->engine.engine_time - snmpd_engine.engine_time) >
346 return (SNMP_CODE_NOTINTIME);
349 if (((pdu->flags & SNMP_MSG_PRIV_FLAG) != 0 &&
350 (pdu->flags & SNMP_MSG_AUTH_FLAG) == 0) ||
351 ((pdu->flags & SNMP_MSG_AUTH_FLAG) == 0 &&
352 usm_user->suser.auth_proto != SNMP_AUTH_NOAUTH) ||
353 ((pdu->flags & SNMP_MSG_PRIV_FLAG) == 0 &&
354 usm_user->suser.priv_proto != SNMP_PRIV_NOPRIV))
355 return (SNMP_CODE_BADSECLEVEL);
357 return (SNMP_CODE_OK);
361 * Check whether access to each of var bindings in the PDU is allowed based
362 * on the user credentials against the configured User groups & VACM views.
364 static enum snmp_code
365 snmp_pdu_auth_access(struct snmp_pdu *pdu, int32_t *ip)
368 int32_t suboid, smodel;
370 struct vacm_user *vuser;
371 struct vacm_access *acl;
372 struct vacm_context *vacmctx;
373 struct vacm_view *view;
376 * At least a default context exists if the snmpd_vacm(3) module is
379 if (SLIST_EMPTY(&vacm_contextlist) ||
380 (pdu->flags & SNMP_MSG_AUTODISCOVER) != 0)
381 return (SNMP_CODE_OK);
383 switch (pdu->version) {
385 if ((uname = comm_string(community)) == NULL)
386 return (SNMP_CODE_FAILED);
387 smodel = SNMP_SECMODEL_SNMPv1;
391 if ((uname = comm_string(community)) == NULL)
392 return (SNMP_CODE_FAILED);
393 smodel = SNMP_SECMODEL_SNMPv2c;
397 uname = pdu->user.sec_name;
398 if ((smodel = pdu->security_model) != SNMP_SECMODEL_USM)
399 return (SNMP_CODE_FAILED);
400 /* Compare the PDU context engine id against the agent's */
401 if (pdu->context_engine_len != snmpd_engine.engine_len ||
402 memcmp(pdu->context_engine, snmpd_engine.engine_id,
403 snmpd_engine.engine_len) != 0)
404 return (SNMP_CODE_FAILED);
411 SLIST_FOREACH(vuser, &vacm_userlist, vvu)
412 if (strcmp(uname, vuser->secname) == 0 &&
413 vuser->sec_model == smodel)
416 if (vuser == NULL || vuser->group == NULL)
417 return (SNMP_CODE_FAILED);
419 /* XXX: shteryana - recheck */
420 TAILQ_FOREACH_REVERSE(acl, &vacm_accesslist, vacm_accesslist, vva) {
421 if (acl->group != vuser->group)
423 SLIST_FOREACH(vacmctx, &vacm_contextlist, vcl)
424 if (memcmp(vacmctx->ctxname, acl->ctx_prefix,
425 acl->ctx_match) == 0)
429 return (SNMP_CODE_FAILED);
435 case SNMP_PDU_GETNEXT:
436 case SNMP_PDU_GETBULK:
437 if ((view = acl->read_view) == NULL)
438 return (SNMP_CODE_FAILED);
442 if ((view = acl->write_view) == NULL)
443 return (SNMP_CODE_FAILED);
447 case SNMP_PDU_INFORM:
449 case SNMP_PDU_REPORT:
450 if ((view = acl->notify_view) == NULL)
451 return (SNMP_CODE_FAILED);
453 case SNMP_PDU_RESPONSE:
455 return (SNMP_CODE_FAILED);
460 for (i = 0; i < pdu->nbindings; i++) {
461 /* XXX - view->mask*/
462 suboid = asn_is_suboid(&view->subtree, &pdu->bindings[i].var);
463 if ((!suboid && !view->exclude) || (suboid && view->exclude)) {
465 return (SNMP_CODE_FAILED);
469 return (SNMP_CODE_OK);
473 * SNMP input. Start: decode the PDU, find the user or community.
476 snmp_input_start(const u_char *buf, size_t len, const char *source,
477 struct snmp_pdu *pdu, int32_t *ip, size_t *pdulen)
481 enum snmpd_input_err ret;
485 this_tick = get_ticks();
490 /* look whether we have enough bytes for the entire PDU. */
491 switch (sret = snmp_pdu_snoop(&b)) {
494 return (SNMPD_INPUT_TRUNC);
497 snmpd_stats.inASNParseErrs++;
498 return (SNMPD_INPUT_FAILED);
500 b.asn_len = *pdulen = (size_t)sret;
502 memset(pdu, 0, sizeof(*pdu));
503 if ((code = snmp_pdu_decode_header(&b, pdu)) != SNMP_CODE_OK)
506 if (pdu->version == SNMP_V3) {
507 if (pdu->security_model != SNMP_SECMODEL_USM) {
508 code = SNMP_CODE_FAILED;
511 if ((code = snmp_pdu_auth_user(pdu)) != SNMP_CODE_OK)
513 if ((code = snmp_pdu_decode_secmode(&b, pdu)) != SNMP_CODE_OK)
516 code = snmp_pdu_decode_scoped(&b, pdu, ip);
518 ret = SNMPD_INPUT_OK;
521 snmpd_stats.inPkts++;
525 case SNMP_CODE_FAILED:
526 snmpd_stats.inASNParseErrs++;
527 return (SNMPD_INPUT_FAILED);
529 case SNMP_CODE_BADVERS:
531 snmpd_stats.inBadVersions++;
532 return (SNMPD_INPUT_FAILED);
534 case SNMP_CODE_BADLEN:
535 if (pdu->type == SNMP_OP_SET)
536 ret = SNMPD_INPUT_VALBADLEN;
539 case SNMP_CODE_OORANGE:
540 if (pdu->type == SNMP_OP_SET)
541 ret = SNMPD_INPUT_VALRANGE;
544 case SNMP_CODE_BADENC:
545 if (pdu->type == SNMP_OP_SET)
546 ret = SNMPD_INPUT_VALBADENC;
549 case SNMP_CODE_BADSECLEVEL:
550 snmpd_usmstats.unsupported_seclevels++;
551 return (SNMPD_INPUT_FAILED);
553 case SNMP_CODE_NOTINTIME:
554 snmpd_usmstats.not_in_time_windows++;
555 return (SNMPD_INPUT_FAILED);
557 case SNMP_CODE_BADUSER:
558 snmpd_usmstats.unknown_users++;
559 return (SNMPD_INPUT_FAILED);
561 case SNMP_CODE_BADENGINE:
562 snmpd_usmstats.unknown_engine_ids++;
563 return (SNMPD_INPUT_FAILED);
565 case SNMP_CODE_BADDIGEST:
566 snmpd_usmstats.wrong_digests++;
567 return (SNMPD_INPUT_FAILED);
569 case SNMP_CODE_EDECRYPT:
570 snmpd_usmstats.decrypt_errors++;
571 return (SNMPD_INPUT_FAILED);
574 switch (pdu->version) {
577 if (!(snmpd.version_enable & VERS_ENABLE_V1))
582 if (!(snmpd.version_enable & VERS_ENABLE_V2C))
587 if (!(snmpd.version_enable & VERS_ENABLE_V3))
597 if (debug.dump_pdus) {
598 snmp_printf("%s -> ", source);
603 * Look, whether we know the community or user
606 if (pdu->version != SNMP_V3) {
607 TAILQ_FOREACH(comm, &community_list, link)
608 if (comm->string != NULL &&
609 strcmp(comm->string, pdu->community) == 0)
613 snmpd_stats.inBadCommunityNames++;
615 if (snmpd.auth_traps)
616 snmp_send_trap(&oid_authenticationFailure,
617 (struct snmp_value *)NULL);
618 ret = SNMPD_INPUT_BAD_COMM;
620 community = comm->value;
621 } else if (pdu->nbindings == 0) {
622 /* RFC 3414 - snmpEngineID Discovery */
623 if (strlen(pdu->user.sec_name) == 0) {
624 asn_append_oid(&(pdu->bindings[pdu->nbindings++].var),
625 &oid_usmUnknownEngineIDs);
626 pdu->context_engine_len = snmpd_engine.engine_len;
627 memcpy(pdu->context_engine, snmpd_engine.engine_id,
628 snmpd_engine.engine_len);
629 } else if (pdu->engine.engine_boots == 0 &&
630 pdu->engine.engine_time == 0) {
631 asn_append_oid(&(pdu->bindings[pdu->nbindings++].var),
632 &oid_usmNotInTimeWindows);
633 pdu->engine.engine_boots = snmpd_engine.engine_boots;
634 pdu->engine.engine_time = snmpd_engine.engine_time;
636 } else if (usm_user->suser.auth_proto != SNMP_AUTH_NOAUTH &&
637 (pdu->engine.engine_boots == 0 || pdu->engine.engine_time == 0)) {
638 snmpd_usmstats.not_in_time_windows++;
639 ret = SNMP_CODE_FAILED;
642 if ((code = snmp_pdu_auth_access(pdu, ip)) != SNMP_CODE_OK)
643 ret = SNMP_CODE_FAILED;
649 * Will return only _OK or _FAILED
652 snmp_input_finish(struct snmp_pdu *pdu, const u_char *rcvbuf, size_t rcvlen,
653 u_char *sndbuf, size_t *sndlen, const char *source,
654 enum snmpd_input_err ierr, int32_t ivar, void *data)
656 struct snmp_pdu resp;
657 struct asn_buf resp_b, pdu_b;
660 resp_b.asn_ptr = sndbuf;
661 resp_b.asn_len = snmpd.txbuf;
663 pdu_b.asn_cptr = rcvbuf;
664 pdu_b.asn_len = rcvlen;
666 if (ierr != SNMPD_INPUT_OK) {
667 /* error decoding the input of a SET */
668 if (pdu->version == SNMP_V1)
669 pdu->error_status = SNMP_ERR_BADVALUE;
670 else if (ierr == SNMPD_INPUT_VALBADLEN)
671 pdu->error_status = SNMP_ERR_WRONG_LENGTH;
672 else if (ierr == SNMPD_INPUT_VALRANGE)
673 pdu->error_status = SNMP_ERR_WRONG_VALUE;
675 pdu->error_status = SNMP_ERR_WRONG_ENCODING;
677 pdu->error_index = ivar;
679 if (snmp_make_errresp(pdu, &pdu_b, &resp_b) == SNMP_RET_IGN) {
680 syslog(LOG_WARNING, "could not encode error response");
681 snmpd_stats.silentDrops++;
682 return (SNMPD_INPUT_FAILED);
685 if (debug.dump_pdus) {
686 snmp_printf("%s <- ", source);
689 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
690 return (SNMPD_INPUT_OK);
696 ret = snmp_get(pdu, &resp_b, &resp, data);
699 case SNMP_PDU_GETNEXT:
700 ret = snmp_getnext(pdu, &resp_b, &resp, data);
704 ret = snmp_set(pdu, &resp_b, &resp, data);
707 case SNMP_PDU_GETBULK:
708 ret = snmp_getbulk(pdu, &resp_b, &resp, data);
719 /* normal return - send a response */
720 if (debug.dump_pdus) {
721 snmp_printf("%s <- ", source);
722 snmp_pdu_dump(&resp);
724 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
725 snmp_pdu_free(&resp);
726 return (SNMPD_INPUT_OK);
729 /* error - send nothing */
730 snmpd_stats.silentDrops++;
731 return (SNMPD_INPUT_FAILED);
734 /* error - send error response. The snmp routine has
735 * changed the error fields in the original message. */
736 resp_b.asn_ptr = sndbuf;
737 resp_b.asn_len = snmpd.txbuf;
738 if (snmp_make_errresp(pdu, &pdu_b, &resp_b) == SNMP_RET_IGN) {
739 syslog(LOG_WARNING, "could not encode error response");
740 snmpd_stats.silentDrops++;
741 return (SNMPD_INPUT_FAILED);
743 if (debug.dump_pdus) {
744 snmp_printf("%s <- ", source);
747 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
748 return (SNMPD_INPUT_OK);
755 * Insert a port into the right place in the transport's table of ports
758 trans_insert_port(struct transport *t, struct tport *port)
762 TAILQ_FOREACH(p, &t->table, link) {
763 if (asn_compare_oid(&p->index, &port->index) > 0) {
764 TAILQ_INSERT_BEFORE(p, port, link);
769 TAILQ_INSERT_TAIL(&t->table, port, link);
773 * Remove a port from a transport's list
776 trans_remove_port(struct tport *port)
779 TAILQ_REMOVE(&port->transport->table, port, link);
783 * Find a port on a transport's list
786 trans_find_port(struct transport *t, const struct asn_oid *idx, u_int sub)
789 return (FIND_OBJECT_OID(&t->table, idx, sub));
793 * Find next port on a transport's list
796 trans_next_port(struct transport *t, const struct asn_oid *idx, u_int sub)
799 return (NEXT_OBJECT_OID(&t->table, idx, sub));
806 trans_first_port(struct transport *t)
809 return (TAILQ_FIRST(&t->table));
813 * Iterate through all ports until a function returns a 0.
816 trans_iter_port(struct transport *t, int (*func)(struct tport *, intptr_t),
821 TAILQ_FOREACH(p, &t->table, link)
822 if (func(p, arg) == 0)
828 * Register a transport
831 trans_register(const struct transport_def *def, struct transport **pp)
836 if ((*pp = malloc(sizeof(**pp))) == NULL)
837 return (SNMP_ERR_GENERR);
839 /* construct index */
840 (*pp)->index.len = strlen(def->name) + 1;
841 (*pp)->index.subs[0] = strlen(def->name);
842 for (i = 0; i < (*pp)->index.subs[0]; i++)
843 (*pp)->index.subs[i + 1] = def->name[i];
847 if (FIND_OBJECT_OID(&transport_list, &(*pp)->index, 0) != NULL) {
849 return (SNMP_ERR_INCONS_VALUE);
852 /* register module */
853 snprintf(or_descr, sizeof(or_descr), "%s transport mapping", def->name);
854 if (((*pp)->or_index = or_register(&def->id, or_descr, NULL)) == 0) {
856 return (SNMP_ERR_GENERR);
859 INSERT_OBJECT_OID((*pp), &transport_list);
861 TAILQ_INIT(&(*pp)->table);
863 return (SNMP_ERR_NOERROR);
867 * Unregister transport
870 trans_unregister(struct transport *t)
872 if (!TAILQ_EMPTY(&t->table))
873 return (SNMP_ERR_INCONS_VALUE);
875 or_unregister(t->or_index);
876 TAILQ_REMOVE(&transport_list, t, link);
878 return (SNMP_ERR_NOERROR);
882 * File descriptor support
884 #ifdef USE_LIBBEGEMOT
886 input(int fd, int mask __unused, void *uap)
889 input(evContext ctx __unused, void *uap, int fd, int mask __unused)
892 struct fdesc *f = uap;
894 (*f->func)(fd, f->udata);
902 #ifdef USE_LIBBEGEMOT
904 poll_unregister(f->id);
908 if (evTestID(f->id)) {
909 (void)evDeselectFD(evctx, f->id);
921 #ifdef USE_LIBBEGEMOT
924 if ((f->id = poll_register(f->fd, input, f, POLL_IN)) < 0) {
926 syslog(LOG_ERR, "select fd %d: %m", f->fd);
933 if (evSelectFD(evctx, f->fd, EV_READ, input, f, &f->id)) {
935 syslog(LOG_ERR, "select fd %d: %m", f->fd);
944 fd_select(int fd, void (*func)(int, void *), void *udata, struct lmodule *mod)
949 if ((f = malloc(sizeof(struct fdesc))) == NULL) {
951 syslog(LOG_ERR, "fd_select: %m");
959 #ifdef USE_LIBBEGEMOT
972 LIST_INSERT_HEAD(&fdesc_list, f, link);
982 LIST_REMOVE(f, link);
988 fd_flush(struct lmodule *mod)
990 struct fdesc *t, *t1;
992 t = LIST_FIRST(&fdesc_list);
994 t1 = LIST_NEXT(t, link);
1002 * Consume a message from the input buffer
1005 snmp_input_consume(struct port_input *pi)
1008 /* always consume everything */
1012 if (pi->consumed >= pi->length) {
1013 /* all bytes consumed */
1017 memmove(pi->buf, pi->buf + pi->consumed, pi->length - pi->consumed);
1018 pi->length -= pi->consumed;
1023 struct cmsgcred cred;
1027 check_priv(struct port_input *pi, struct msghdr *msg)
1029 struct credmsg *cmsg;
1030 struct xucred ucred;
1035 if (msg->msg_controllen == sizeof(*cmsg)) {
1036 /* process explicitly sends credentials */
1038 cmsg = (struct credmsg *)msg->msg_control;
1039 pi->priv = (cmsg->cred.cmcred_euid == 0);
1043 /* ok, obtain the accept time credentials */
1044 ucredlen = sizeof(ucred);
1046 if (getsockopt(pi->fd, 0, LOCAL_PEERCRED, &ucred, &ucredlen) == 0 &&
1047 ucredlen >= sizeof(ucred) && ucred.cr_version == XUCRED_VERSION)
1048 pi->priv = (ucred.cr_uid == 0);
1052 * Input from a stream socket.
1055 recv_stream(struct port_input *pi)
1058 struct iovec iov[1];
1060 struct credmsg cmsg;
1062 if (pi->buf == NULL) {
1063 /* no buffer yet - allocate one */
1064 if ((pi->buf = buf_alloc(0)) == NULL) {
1065 /* ups - could not get buffer. Return an error
1066 * the caller must close the transport. */
1069 pi->buflen = buf_size(0);
1074 /* try to get a message */
1075 msg.msg_name = pi->peer;
1076 msg.msg_namelen = pi->peerlen;
1080 msg.msg_control = &cmsg;
1081 msg.msg_controllen = sizeof(cmsg);
1083 cmsg.hdr.cmsg_len = sizeof(cmsg);
1084 cmsg.hdr.cmsg_level = SOL_SOCKET;
1085 cmsg.hdr.cmsg_type = SCM_CREDS;
1087 msg.msg_control = NULL;
1088 msg.msg_controllen = 0;
1092 iov[0].iov_base = pi->buf + pi->length;
1093 iov[0].iov_len = pi->buflen - pi->length;
1095 len = recvmsg(pi->fd, &msg, 0);
1097 if (len == -1 || len == 0)
1104 check_priv(pi, &msg);
1110 * Input from a datagram socket.
1111 * Each receive should return one datagram.
1114 recv_dgram(struct port_input *pi)
1118 struct iovec iov[1];
1120 struct credmsg cmsg;
1122 if (pi->buf == NULL) {
1123 /* no buffer yet - allocate one */
1124 if ((pi->buf = buf_alloc(0)) == NULL) {
1125 /* ups - could not get buffer. Read away input
1127 (void)recvfrom(pi->fd, embuf, sizeof(embuf),
1132 pi->buflen = buf_size(0);
1135 /* try to get a message */
1136 msg.msg_name = pi->peer;
1137 msg.msg_namelen = pi->peerlen;
1141 msg.msg_control = &cmsg;
1142 msg.msg_controllen = sizeof(cmsg);
1144 cmsg.hdr.cmsg_len = sizeof(cmsg);
1145 cmsg.hdr.cmsg_level = SOL_SOCKET;
1146 cmsg.hdr.cmsg_type = SCM_CREDS;
1148 msg.msg_control = NULL;
1149 msg.msg_controllen = 0;
1153 iov[0].iov_base = pi->buf;
1154 iov[0].iov_len = pi->buflen;
1156 len = recvmsg(pi->fd, &msg, 0);
1158 if (len == -1 || len == 0)
1162 if (msg.msg_flags & MSG_TRUNC) {
1163 /* truncated - drop */
1164 snmpd_stats.silentDrops++;
1165 snmpd_stats.inTooLong++;
1169 pi->length = (size_t)len;
1172 check_priv(pi, &msg);
1178 * Input from a socket
1181 snmpd_input(struct port_input *pi, struct tport *tport)
1185 struct snmp_pdu pdu;
1186 enum snmpd_input_err ierr, ferr;
1187 enum snmpd_proxy_err perr;
1191 #ifdef USE_TCPWRAPPERS
1195 /* get input depending on the transport */
1197 ret = recv_stream(pi);
1199 ret = recv_dgram(pi);
1205 #ifdef USE_TCPWRAPPERS
1207 * In case of AF_INET{6} peer, do hosts_access(5) check.
1209 if (inet_ntop(pi->peer->sa_family,
1210 &((const struct sockaddr_in *)(const void *)pi->peer)->sin_addr,
1211 client, sizeof(client)) != NULL) {
1212 request_set(&req, RQ_CLIENT_ADDR, client, 0);
1213 if (hosts_access(&req) == 0) {
1214 syslog(LOG_ERR, "refused connection from %.500s",
1219 syslog(LOG_ERR, "inet_ntop(): %m");
1225 ierr = snmp_input_start(pi->buf, pi->length, "SNMP", &pdu, &vi,
1227 if (ierr == SNMPD_INPUT_TRUNC) {
1228 /* need more bytes. This is ok only for streaming transports.
1229 * but only if we have not reached bufsiz yet. */
1231 if (pi->length == buf_size(0)) {
1232 snmpd_stats.silentDrops++;
1237 snmpd_stats.silentDrops++;
1241 /* can't check for bad SET pdus here, because a proxy may have to
1242 * check the access first. We don't want to return an error response
1243 * to a proxy PDU with a wrong community */
1244 if (ierr == SNMPD_INPUT_FAILED) {
1245 /* for streaming transports this is fatal */
1248 snmp_input_consume(pi);
1251 if (ierr == SNMPD_INPUT_BAD_COMM) {
1252 snmp_input_consume(pi);
1257 * If that is a module community and the module has a proxy function,
1258 * the hand it over to the module.
1260 if (comm != NULL && comm->owner != NULL &&
1261 comm->owner->config->proxy != NULL) {
1262 perr = (*comm->owner->config->proxy)(&pdu, tport->transport,
1263 &tport->index, pi->peer, pi->peerlen, ierr, vi,
1264 !pi->cred || pi->priv);
1268 case SNMPD_PROXY_OK:
1269 snmp_input_consume(pi);
1272 case SNMPD_PROXY_REJ:
1275 case SNMPD_PROXY_DROP:
1276 snmp_input_consume(pi);
1277 snmp_pdu_free(&pdu);
1278 snmpd_stats.proxyDrops++;
1281 case SNMPD_PROXY_BADCOMM:
1282 snmp_input_consume(pi);
1283 snmp_pdu_free(&pdu);
1284 snmpd_stats.inBadCommunityNames++;
1285 if (snmpd.auth_traps)
1286 snmp_send_trap(&oid_authenticationFailure,
1287 (struct snmp_value *)NULL);
1290 case SNMPD_PROXY_BADCOMMUSE:
1291 snmp_input_consume(pi);
1292 snmp_pdu_free(&pdu);
1293 snmpd_stats.inBadCommunityUses++;
1294 if (snmpd.auth_traps)
1295 snmp_send_trap(&oid_authenticationFailure,
1296 (struct snmp_value *)NULL);
1304 if (pdu.type == SNMP_PDU_RESPONSE ||
1305 pdu.type == SNMP_PDU_TRAP ||
1306 pdu.type == SNMP_PDU_TRAP2) {
1307 snmpd_stats.silentDrops++;
1308 snmpd_stats.inBadPduTypes++;
1309 snmp_pdu_free(&pdu);
1310 snmp_input_consume(pi);
1317 if (pdu.version < SNMP_V3 &&
1318 ((pi->cred && !pi->priv && pdu.type == SNMP_PDU_SET) ||
1319 (community != COMM_WRITE &&
1320 (pdu.type == SNMP_PDU_SET || community != COMM_READ)))) {
1321 snmpd_stats.inBadCommunityUses++;
1322 snmp_pdu_free(&pdu);
1323 snmp_input_consume(pi);
1324 if (snmpd.auth_traps)
1325 snmp_send_trap(&oid_authenticationFailure,
1326 (struct snmp_value *)NULL);
1333 if ((sndbuf = buf_alloc(1)) == NULL) {
1334 snmpd_stats.silentDrops++;
1335 snmp_pdu_free(&pdu);
1336 snmp_input_consume(pi);
1339 ferr = snmp_input_finish(&pdu, pi->buf, pi->length,
1340 sndbuf, &sndlen, "SNMP", ierr, vi, NULL);
1342 if (ferr == SNMPD_INPUT_OK) {
1343 slen = sendto(pi->fd, sndbuf, sndlen, 0, pi->peer, pi->peerlen);
1345 syslog(LOG_ERR, "sendto: %m");
1346 else if ((size_t)slen != sndlen)
1347 syslog(LOG_ERR, "sendto: short write %zu/%zu",
1348 sndlen, (size_t)slen);
1350 snmp_pdu_free(&pdu);
1352 snmp_input_consume(pi);
1358 * Send a PDU to a given port
1361 snmp_send_port(void *targ, const struct asn_oid *port, struct snmp_pdu *pdu,
1362 const struct sockaddr *addr, socklen_t addrlen)
1364 struct transport *trans = targ;
1370 TAILQ_FOREACH(tp, &trans->table, link)
1371 if (asn_compare_oid(port, &tp->index) == 0)
1376 if ((sndbuf = buf_alloc(1)) == NULL)
1379 snmp_output(pdu, sndbuf, &sndlen, "SNMP PROXY");
1381 len = trans->vtab->send(tp, sndbuf, sndlen, addr, addrlen);
1384 syslog(LOG_ERR, "sendto: %m");
1385 else if ((size_t)len != sndlen)
1386 syslog(LOG_ERR, "sendto: short write %zu/%zu",
1387 sndlen, (size_t)len);
1394 * Close an input source
1397 snmpd_input_close(struct port_input *pi)
1400 fd_deselect(pi->id);
1402 (void)close(pi->fd);
1403 if (pi->buf != NULL)
1408 * Dump internal state.
1410 #ifdef USE_LIBBEGEMOT
1415 info_func(evContext ctx __unused, void *uap __unused, const void *tag __unused)
1422 syslog(LOG_DEBUG, "Dump of SNMPd %lu\n", (u_long)getpid());
1423 for (i = 0; i < tree_size; i++) {
1424 switch (tree[i].type) {
1426 case SNMP_NODE_LEAF:
1427 sprintf(buf, "LEAF: %s %s", tree[i].name,
1428 asn_oid2str(&tree[i].oid));
1431 case SNMP_NODE_COLUMN:
1432 sprintf(buf, "COL: %s %s", tree[i].name,
1433 asn_oid2str(&tree[i].oid));
1436 syslog(LOG_DEBUG, "%s", buf);
1439 TAILQ_FOREACH(m, &lmodules, link)
1440 if (m->config->dump)
1441 (*m->config->dump)();
1445 * Re-read configuration
1447 #ifdef USE_LIBBEGEMOT
1452 config_func(evContext ctx __unused, void *uap __unused,
1453 const void *tag __unused)
1458 if (read_config(config_file, NULL)) {
1459 syslog(LOG_ERR, "error reading config file '%s'", config_file);
1462 TAILQ_FOREACH(m, &lmodules, link)
1463 if (m->config->config)
1464 (*m->config->config)();
1468 * On USR1 dump actual configuration.
1471 onusr1(int s __unused)
1474 work |= WORK_DOINFO;
1477 onhup(int s __unused)
1480 work |= WORK_RECONFIG;
1484 onterm(int s __unused)
1487 /* allow clean-up */
1494 struct sigaction sa;
1496 sa.sa_handler = onusr1;
1497 sa.sa_flags = SA_RESTART;
1498 sigemptyset(&sa.sa_mask);
1499 if (sigaction(SIGUSR1, &sa, NULL)) {
1500 syslog(LOG_ERR, "sigaction: %m");
1504 sa.sa_handler = onhup;
1505 if (sigaction(SIGHUP, &sa, NULL)) {
1506 syslog(LOG_ERR, "sigaction: %m");
1510 sa.sa_handler = onterm;
1512 sigemptyset(&sa.sa_mask);
1513 if (sigaction(SIGTERM, &sa, NULL)) {
1514 syslog(LOG_ERR, "sigaction: %m");
1517 if (sigaction(SIGINT, &sa, NULL)) {
1518 syslog(LOG_ERR, "sigaction: %m");
1529 if (sigprocmask(SIG_BLOCK, &set, &blocked_sigs) == -1) {
1530 syslog(LOG_ERR, "SIG_BLOCK: %m");
1537 if (sigprocmask(SIG_SETMASK, &blocked_sigs, NULL) == -1) {
1538 syslog(LOG_ERR, "SIG_SETMASK: %m");
1549 (void)unlink(pid_file);
1555 struct transport *t;
1557 TAILQ_FOREACH(t, &transport_list, link)
1558 (void)t->vtab->stop(1);
1562 * Define a macro from the command line
1570 if ((eq = strchr(arg, '=')) == NULL)
1571 err = define_macro(arg, "");
1574 err = define_macro(arg, eq);
1577 syslog(LOG_ERR, "cannot save macro: %m");
1583 * Re-implement getsubopt from scratch, because the second argument is broken
1584 * and will not compile with WARNS=5.
1587 getsubopt1(char **arg, const char *const *options, char **valp, char **optp)
1589 static const char *const delim = ",\t ";
1595 /* skip leading junk */
1596 for (ptr = *arg; *ptr != '\0'; ptr++)
1597 if (strchr(delim, *ptr) == NULL)
1605 /* find the end of the option */
1606 while (*++ptr != '\0')
1607 if (strchr(delim, *ptr) != NULL || *ptr == '=')
1614 while (*ptr != '\0' && strchr(delim, *ptr) == NULL)
1624 for (i = 0; *options != NULL; options++, i++)
1625 if (strcmp(*optp, *options) == 0)
1631 main(int argc, char *argv[])
1637 const char *prefix = "snmpd";
1639 char *value = NULL, *option; /* XXX */
1640 struct transport *t;
1643 #define DBG_EVENTS 1
1645 static const char *const debug_opts[] = {
1652 snmp_printf = snmp_printf_func;
1653 snmp_error = snmp_error_func;
1654 snmp_debug = snmp_debug_func;
1655 asn_error = asn_error_func;
1657 while ((opt = getopt(argc, argv, "c:dD:e:hI:l:m:p:")) != EOF)
1661 strlcpy(config_file, optarg, sizeof(config_file));
1670 switch (getsubopt1(&optarg, debug_opts,
1674 debug.dump_pdus = 1;
1684 "no value for 'trace'");
1686 snmp_trace = strtoul(value,
1693 "unknown debug flag '%s'",
1697 "missing debug flag");
1704 strlcpy(engine_file, optarg, sizeof(engine_file));
1707 fprintf(stderr, "%s", usgtxt);
1723 strlcpy(pid_file, optarg, sizeof(pid_file));
1727 openlog(prefix, LOG_PID | (background ? 0 : LOG_PERROR), LOG_USER);
1728 setlogmask(LOG_UPTO(debug.logpri - 1));
1730 if (background && daemon(0, 0) < 0) {
1731 syslog(LOG_ERR, "daemon: %m");
1743 snmp_serial_no = random();
1745 #ifdef USE_TCPWRAPPERS
1747 * Initialize hosts_access(3) handler.
1749 request_init(&req, RQ_DAEMON, "snmpd", 0);
1754 * Initialize the tree.
1756 if ((tree = malloc(sizeof(struct snmp_node) * CTREE_SIZE)) == NULL) {
1757 syslog(LOG_ERR, "%m");
1760 memcpy(tree, ctree, sizeof(struct snmp_node) * CTREE_SIZE);
1761 tree_size = CTREE_SIZE;
1764 * Get standard communities
1766 (void)comm_define(1, "SNMP read", NULL, NULL);
1767 (void)comm_define(2, "SNMP write", NULL, NULL);
1768 community = COMM_INITIALIZE;
1770 trap_reqid = reqid_allocate(512, NULL);
1772 if (config_file[0] == '\0')
1773 snprintf(config_file, sizeof(config_file), PATH_CONFIG, prefix);
1776 init_snmpd_engine();
1778 this_tick = get_ticks();
1779 start_tick = this_tick;
1781 /* start transports */
1782 if (atexit(trans_stop) == -1) {
1783 syslog(LOG_ERR, "atexit failed: %m");
1786 if (udp_trans.start() != SNMP_ERR_NOERROR)
1787 syslog(LOG_WARNING, "cannot start UDP transport");
1788 if (lsock_trans.start() != SNMP_ERR_NOERROR)
1789 syslog(LOG_WARNING, "cannot start LSOCK transport");
1791 #ifdef USE_LIBBEGEMOT
1792 if (debug.evdebug > 0)
1795 if (evCreate(&evctx)) {
1796 syslog(LOG_ERR, "evCreate: %m");
1799 if (debug.evdebug > 0)
1800 evSetDebug(evctx, 10, stderr);
1803 if (engine_file[0] == '\0')
1804 snprintf(engine_file, sizeof(engine_file), PATH_ENGINE, prefix);
1806 if (read_config(config_file, NULL)) {
1807 syslog(LOG_ERR, "error in config file");
1811 TAILQ_FOREACH(t, &transport_list, link)
1812 TAILQ_FOREACH(p, &t->table, link)
1813 t->vtab->init_port(p);
1817 if (pid_file[0] == '\0')
1818 snprintf(pid_file, sizeof(pid_file), PATH_PID, prefix);
1820 if ((fp = fopen(pid_file, "w")) != NULL) {
1821 fprintf(fp, "%u", getpid());
1823 if (atexit(term) == -1) {
1824 syslog(LOG_ERR, "atexit failed: %m");
1825 (void)remove(pid_file);
1830 if (or_register(&oid_snmpMIB, "The MIB module for SNMPv2 entities.",
1832 syslog(LOG_ERR, "cannot register SNMPv2 MIB");
1835 if (or_register(&oid_begemotSnmpd, "The MIB module for the Begemot SNMPd.",
1837 syslog(LOG_ERR, "cannot register begemotSnmpd MIB");
1841 snmp_send_trap(&oid_coldStart, (struct snmp_value *)NULL);
1843 while ((m = TAILQ_FIRST(&modules_start)) != NULL) {
1844 m->flags &= ~LM_ONSTARTLIST;
1845 TAILQ_REMOVE(&modules_start, m, start);
1850 #ifndef USE_LIBBEGEMOT
1853 struct lmodule *mod;
1855 TAILQ_FOREACH(mod, &lmodules, link)
1856 if (mod->config->idle != NULL)
1857 (*mod->config->idle)();
1859 #ifndef USE_LIBBEGEMOT
1860 if (evGetNext(evctx, &event, EV_WAIT) == 0) {
1861 if (evDispatch(evctx, event))
1862 syslog(LOG_ERR, "evDispatch: %m");
1863 } else if (errno != EINTR) {
1864 syslog(LOG_ERR, "evGetNext: %m");
1873 if (work & WORK_DOINFO) {
1874 #ifdef USE_LIBBEGEMOT
1877 if (evWaitFor(evctx, &work, info_func,
1878 NULL, NULL) == -1) {
1879 syslog(LOG_ERR, "evWaitFor: %m");
1884 if (work & WORK_RECONFIG) {
1885 #ifdef USE_LIBBEGEMOT
1888 if (evWaitFor(evctx, &work, config_func,
1889 NULL, NULL) == -1) {
1890 syslog(LOG_ERR, "evWaitFor: %m");
1897 #ifndef USE_LIBBEGEMOT
1898 if (evDo(evctx, &work) == -1) {
1899 syslog(LOG_ERR, "evDo: %m");
1915 if (gettimeofday(&tv, NULL))
1917 ret = tv.tv_sec * 100ULL + tv.tv_usec / 10000ULL;
1926 * Trampoline for the non-repeatable timers.
1928 #ifdef USE_LIBBEGEMOT
1930 tfunc(int tid __unused, void *uap)
1933 tfunc(evContext ctx __unused, void *uap, struct timespec due __unused,
1934 struct timespec inter __unused)
1937 struct timer *tp = uap;
1939 LIST_REMOVE(tp, link);
1940 tp->func(tp->udata);
1945 * Trampoline for the repeatable timers.
1947 #ifdef USE_LIBBEGEMOT
1949 trfunc(int tid __unused, void *uap)
1952 trfunc(evContext ctx __unused, void *uap, struct timespec due __unused,
1953 struct timespec inter __unused)
1956 struct timer *tp = uap;
1958 tp->func(tp->udata);
1962 * Start a one-shot timer
1965 timer_start(u_int ticks, void (*func)(void *), void *udata, struct lmodule *mod)
1968 #ifndef USE_LIBBEGEMOT
1969 struct timespec due;
1972 if ((tp = malloc(sizeof(struct timer))) == NULL) {
1973 syslog(LOG_CRIT, "out of memory for timer");
1977 #ifndef USE_LIBBEGEMOT
1978 due = evAddTime(evNowTime(),
1979 evConsTime(ticks / 100, (ticks % 100) * 10000));
1986 LIST_INSERT_HEAD(&timer_list, tp, link);
1988 #ifdef USE_LIBBEGEMOT
1989 if ((tp->id = poll_start_timer(ticks * 10, 0, tfunc, tp)) < 0) {
1990 syslog(LOG_ERR, "cannot set timer: %m");
1994 if (evSetTimer(evctx, tfunc, tp, due, evConsTime(0, 0), &tp->id)
1996 syslog(LOG_ERR, "cannot set timer: %m");
2004 * Start a repeatable timer. When used with USE_LIBBEGEMOT the first argument
2005 * is currently ignored and the initial number of ticks is set to the
2006 * repeat number of ticks.
2009 timer_start_repeat(u_int ticks __unused, u_int repeat_ticks,
2010 void (*func)(void *), void *udata, struct lmodule *mod)
2013 #ifndef USE_LIBBEGEMOT
2014 struct timespec due;
2015 struct timespec inter;
2018 if ((tp = malloc(sizeof(struct timer))) == NULL) {
2019 syslog(LOG_CRIT, "out of memory for timer");
2023 #ifndef USE_LIBBEGEMOT
2024 due = evAddTime(evNowTime(),
2025 evConsTime(ticks / 100, (ticks % 100) * 10000));
2026 inter = evConsTime(repeat_ticks / 100, (repeat_ticks % 100) * 10000);
2033 LIST_INSERT_HEAD(&timer_list, tp, link);
2035 #ifdef USE_LIBBEGEMOT
2036 if ((tp->id = poll_start_timer(repeat_ticks * 10, 1, trfunc, tp)) < 0) {
2037 syslog(LOG_ERR, "cannot set timer: %m");
2041 if (evSetTimer(evctx, trfunc, tp, due, inter, &tp->id) == -1) {
2042 syslog(LOG_ERR, "cannot set timer: %m");
2055 struct timer *tp = p;
2057 LIST_REMOVE(tp, link);
2058 #ifdef USE_LIBBEGEMOT
2059 poll_stop_timer(tp->id);
2061 if (evClearTimer(evctx, tp->id) == -1) {
2062 syslog(LOG_ERR, "cannot stop timer: %m");
2070 timer_flush(struct lmodule *mod)
2072 struct timer *t, *t1;
2074 t = LIST_FIRST(&timer_list);
2076 t1 = LIST_NEXT(t, link);
2077 if (t->owner == mod)
2084 snmp_printf_func(const char *fmt, ...)
2087 static char *pend = NULL;
2091 vasprintf(&ret, fmt, ap);
2097 if ((new = realloc(pend, strlen(pend) + strlen(ret) + 1))
2108 while ((ret = strchr(pend, '\n')) != NULL) {
2110 syslog(LOG_DEBUG, "%s", pend);
2111 if (strlen(ret + 1) == 0) {
2116 strcpy(pend, ret + 1);
2121 snmp_error_func(const char *err, ...)
2126 if (!(snmp_trace & LOG_SNMP_ERRORS))
2130 snprintf(errbuf, sizeof(errbuf), "SNMP: ");
2131 vsnprintf(errbuf + strlen(errbuf),
2132 sizeof(errbuf) - strlen(errbuf), err, ap);
2135 syslog(LOG_ERR, "%s", errbuf);
2139 snmp_debug_func(const char *err, ...)
2145 snprintf(errbuf, sizeof(errbuf), "SNMP: ");
2146 vsnprintf(errbuf+strlen(errbuf), sizeof(errbuf)-strlen(errbuf),
2150 syslog(LOG_DEBUG, "%s", errbuf);
2154 asn_error_func(const struct asn_buf *b, const char *err, ...)
2160 if (!(snmp_trace & LOG_ASN1_ERRORS))
2164 snprintf(errbuf, sizeof(errbuf), "ASN.1: ");
2165 vsnprintf(errbuf + strlen(errbuf),
2166 sizeof(errbuf) - strlen(errbuf), err, ap);
2170 snprintf(errbuf + strlen(errbuf),
2171 sizeof(errbuf) - strlen(errbuf), " at");
2172 for (i = 0; b->asn_len > i; i++)
2173 snprintf(errbuf + strlen(errbuf),
2174 sizeof(errbuf) - strlen(errbuf),
2175 " %02x", b->asn_cptr[i]);
2178 syslog(LOG_ERR, "%s", errbuf);
2182 * Create a new community
2185 comm_define(u_int priv, const char *descr, struct lmodule *owner,
2188 struct community *c, *p;
2191 /* generate an identifier */
2193 if ((ncomm = next_community_index++) == UINT_MAX)
2194 next_community_index = 1;
2195 TAILQ_FOREACH(c, &community_list, link)
2196 if (c->value == ncomm)
2198 } while (c != NULL);
2200 if ((c = malloc(sizeof(struct community))) == NULL) {
2201 syslog(LOG_ERR, "comm_define: %m");
2211 if((c->string = malloc(strlen(str)+1)) == NULL) {
2215 strcpy(c->string, str);
2219 if (c->owner == NULL) {
2221 c->index.subs[0] = 0;
2223 c->index = c->owner->index;
2225 c->index.subs[c->index.len++] = c->private;
2230 TAILQ_FOREACH(p, &community_list, link) {
2231 if (asn_compare_oid(&p->index, &c->index) > 0) {
2232 TAILQ_INSERT_BEFORE(p, c, link);
2237 TAILQ_INSERT_TAIL(&community_list, c, link);
2242 comm_string(u_int ncomm)
2244 struct community *p;
2246 TAILQ_FOREACH(p, &community_list, link)
2247 if (p->value == ncomm)
2253 * Delete all communities allocated by a module
2256 comm_flush(struct lmodule *mod)
2258 struct community *p, *p1;
2260 p = TAILQ_FIRST(&community_list);
2262 p1 = TAILQ_NEXT(p, link);
2263 if (p->owner == mod) {
2265 TAILQ_REMOVE(&community_list, p, link);
2273 * Request ID handling.
2275 * Allocate a new range of request ids. Use a first fit algorithm.
2278 reqid_allocate(int size, struct lmodule *mod)
2281 struct idrange *r, *r1;
2283 if (size <= 0 || size > INT32_MAX) {
2284 syslog(LOG_CRIT, "%s: size out of range: %d", __func__, size);
2287 /* allocate a type id */
2289 if ((type = next_idrange++) == UINT_MAX)
2291 TAILQ_FOREACH(r, &idrange_list, link)
2292 if (r->type == type)
2297 if (TAILQ_EMPTY(&idrange_list))
2300 r = TAILQ_FIRST(&idrange_list);
2301 if (r->base < size) {
2302 while((r1 = TAILQ_NEXT(r, link)) != NULL) {
2303 if (r1->base - (r->base + r->size) >= size)
2310 r1 = TAILQ_LAST(&idrange_list, idrange_list);
2311 if (INT32_MAX - size + 1 < r1->base + r1->size) {
2312 syslog(LOG_ERR, "out of id ranges (%u)", size);
2318 /* allocate structure */
2319 if ((r1 = malloc(sizeof(struct idrange))) == NULL) {
2320 syslog(LOG_ERR, "%s: %m", __FUNCTION__);
2327 if (TAILQ_EMPTY(&idrange_list) || r == TAILQ_FIRST(&idrange_list)) {
2329 TAILQ_INSERT_HEAD(&idrange_list, r1, link);
2330 } else if (r == NULL) {
2331 r = TAILQ_LAST(&idrange_list, idrange_list);
2332 r1->base = r->base + r->size;
2333 TAILQ_INSERT_TAIL(&idrange_list, r1, link);
2335 r = TAILQ_PREV(r, idrange_list, link);
2336 r1->base = r->base + r->size;
2337 TAILQ_INSERT_AFTER(&idrange_list, r, r1, link);
2339 r1->next = r1->base;
2345 reqid_next(u_int type)
2350 TAILQ_FOREACH(r, &idrange_list, link)
2351 if (r->type == type)
2354 syslog(LOG_CRIT, "wrong idrange type");
2357 if ((id = r->next++) == r->base + (r->size - 1))
2363 reqid_base(u_int type)
2367 TAILQ_FOREACH(r, &idrange_list, link)
2368 if (r->type == type)
2370 syslog(LOG_CRIT, "wrong idrange type");
2375 reqid_type(int32_t reqid)
2379 TAILQ_FOREACH(r, &idrange_list, link)
2380 if (reqid >= r->base && reqid <= r->base + (r->size - 1))
2386 reqid_istype(int32_t reqid, u_int type)
2388 return (reqid_type(reqid) == type);
2392 * Delete all communities allocated by a module
2395 reqid_flush(struct lmodule *mod)
2397 struct idrange *p, *p1;
2399 p = TAILQ_FIRST(&idrange_list);
2401 p1 = TAILQ_NEXT(p, link);
2402 if (p->owner == mod) {
2403 TAILQ_REMOVE(&idrange_list, p, link);
2411 * Merge the given tree for the given module into the main tree.
2414 compare_node(const void *v1, const void *v2)
2416 const struct snmp_node *n1 = v1;
2417 const struct snmp_node *n2 = v2;
2419 return (asn_compare_oid(&n1->oid, &n2->oid));
2422 tree_merge(const struct snmp_node *ntree, u_int nsize, struct lmodule *mod)
2424 struct snmp_node *xtree;
2427 xtree = realloc(tree, sizeof(*tree) * (tree_size + nsize));
2428 if (xtree == NULL) {
2429 syslog(LOG_ERR, "tree_merge: %m");
2433 memcpy(&tree[tree_size], ntree, sizeof(*tree) * nsize);
2435 for (i = 0; i < nsize; i++)
2436 tree[tree_size + i].tree_data = mod;
2440 qsort(tree, tree_size, sizeof(tree[0]), compare_node);
2446 * Remove all nodes belonging to the loadable module
2449 tree_unmerge(struct lmodule *mod)
2453 for(s = d = 0; s < tree_size; s++)
2454 if (tree[s].tree_data != mod) {
2466 lm_load(const char *path, const char *section)
2471 char *av[MAX_MOD_ARGS + 1];
2475 if ((m = malloc(sizeof(*m))) == NULL) {
2476 syslog(LOG_ERR, "lm_load: %m");
2481 strcpy(m->section, section);
2483 if ((m->path = malloc(strlen(path) + 1)) == NULL) {
2484 syslog(LOG_ERR, "lm_load: %m");
2487 strcpy(m->path, path);
2492 m->index.subs[0] = strlen(section);
2493 m->index.len = m->index.subs[0] + 1;
2494 for (u = 0; u < m->index.subs[0]; u++)
2495 m->index.subs[u + 1] = section[u];
2498 * Load the object file and locate the config structure
2500 if ((m->handle = dlopen(m->path, RTLD_NOW|RTLD_GLOBAL)) == NULL) {
2501 syslog(LOG_ERR, "lm_load: open %s", dlerror());
2505 if ((m->config = dlsym(m->handle, "config")) == NULL) {
2506 syslog(LOG_ERR, "lm_load: no 'config' symbol %s", dlerror());
2511 * Insert it into the right place
2513 INSERT_OBJECT_OID(m, &lmodules);
2515 /* preserve order */
2516 if (community == COMM_INITIALIZE) {
2517 m->flags |= LM_ONSTARTLIST;
2518 TAILQ_INSERT_TAIL(&modules_start, m, start);
2522 * make the argument vector.
2525 for (i = 0; i < nprogargs; i++) {
2526 if (strlen(progargs[i]) >= strlen(section) + 1 &&
2527 strncmp(progargs[i], section, strlen(section)) == 0 &&
2528 progargs[i][strlen(section)] == ':') {
2529 if (ac == MAX_MOD_ARGS) {
2530 syslog(LOG_WARNING, "too many arguments for "
2531 "module '%s", section);
2534 av[ac++] = &progargs[i][strlen(section)+1];
2540 * Run the initialization function
2542 if ((err = (*m->config->init)(m, ac, av)) != 0) {
2543 syslog(LOG_ERR, "lm_load: init failed: %d", err);
2544 TAILQ_REMOVE(&lmodules, m, link);
2551 if ((m->flags & LM_ONSTARTLIST) != 0)
2552 TAILQ_REMOVE(&modules_start, m, start);
2564 lm_start(struct lmodule *mod)
2566 const struct lmodule *m;
2569 * Merge tree. If this fails, unload the module.
2571 if (tree_merge(mod->config->tree, mod->config->tree_size, mod)) {
2577 * Read configuration
2579 if (read_config(config_file, mod)) {
2580 syslog(LOG_ERR, "error in config file");
2584 if (mod->config->start)
2585 (*mod->config->start)();
2587 mod->flags |= LM_STARTED;
2590 * Inform other modules
2592 TAILQ_FOREACH(m, &lmodules, link)
2593 if (m->config->loading)
2594 (*m->config->loading)(mod, 1);
2602 lm_unload(struct lmodule *m)
2605 const struct lmodule *mod;
2607 TAILQ_REMOVE(&lmodules, m, link);
2608 if (m->flags & LM_ONSTARTLIST)
2609 TAILQ_REMOVE(&modules_start, m, start);
2612 if ((m->flags & LM_STARTED) && m->config->fini &&
2613 (err = (*m->config->fini)()) != 0)
2614 syslog(LOG_WARNING, "lm_unload(%s): fini %d", m->section, err);
2625 * Inform other modules
2627 TAILQ_FOREACH(mod, &lmodules, link)
2628 if (mod->config->loading)
2629 (*mod->config->loading)(m, 0);
2635 * Register an object resource and return the index (or 0 on failures)
2638 or_register(const struct asn_oid *or, const char *descr, struct lmodule *mod)
2640 struct objres *objres, *or1;
2643 /* find a free index */
2645 for (objres = TAILQ_FIRST(&objres_list);
2647 objres = TAILQ_NEXT(objres, link)) {
2648 if ((or1 = TAILQ_NEXT(objres, link)) == NULL ||
2649 or1->index > objres->index + 1) {
2650 idx = objres->index + 1;
2655 if ((objres = malloc(sizeof(*objres))) == NULL)
2658 objres->index = idx;
2660 strlcpy(objres->descr, descr, sizeof(objres->descr));
2661 objres->uptime = (uint32_t)(get_ticks() - start_tick);
2662 objres->module = mod;
2664 INSERT_OBJECT_INT(objres, &objres_list);
2666 systemg.or_last_change = objres->uptime;
2672 or_unregister(u_int idx)
2674 struct objres *objres;
2676 TAILQ_FOREACH(objres, &objres_list, link)
2677 if (objres->index == idx) {
2678 TAILQ_REMOVE(&objres_list, objres, link);
2685 * RFC 3414 User-based Security Model support
2688 struct snmpd_usmstat *
2689 bsnmpd_get_usm_stats(void)
2691 return (&snmpd_usmstats);
2695 bsnmpd_reset_usm_stats(void)
2697 memset(&snmpd_usmstats, 0, sizeof(&snmpd_usmstats));
2701 usm_first_user(void)
2703 return (SLIST_FIRST(&usm_userlist));
2707 usm_next_user(struct usm_user *uuser)
2712 return (SLIST_NEXT(uuser, up));
2716 usm_find_user(uint8_t *engine, uint32_t elen, char *uname)
2718 struct usm_user *uuser;
2720 SLIST_FOREACH(uuser, &usm_userlist, up)
2721 if (uuser->user_engine_len == elen &&
2722 memcmp(uuser->user_engine_id, engine, elen) == 0 &&
2723 strlen(uuser->suser.sec_name) == strlen(uname) &&
2724 strcmp(uuser->suser.sec_name, uname) == 0)
2731 usm_compare_user(struct usm_user *u1, struct usm_user *u2)
2735 if (u1->user_engine_len < u2->user_engine_len)
2737 if (u1->user_engine_len > u2->user_engine_len)
2740 for (i = 0; i < u1->user_engine_len; i++) {
2741 if (u1->user_engine_id[i] < u2->user_engine_id[i])
2743 if (u1->user_engine_id[i] > u2->user_engine_id[i])
2747 if (strlen(u1->suser.sec_name) < strlen(u2->suser.sec_name))
2749 if (strlen(u1->suser.sec_name) > strlen(u2->suser.sec_name))
2752 for (i = 0; i < strlen(u1->suser.sec_name); i++) {
2753 if (u1->suser.sec_name[i] < u2->suser.sec_name[i])
2755 if (u1->suser.sec_name[i] > u2->suser.sec_name[i])
2763 usm_new_user(uint8_t *eid, uint32_t elen, char *uname)
2766 struct usm_user *uuser, *temp, *prev;
2768 for (uuser = usm_first_user(); uuser != NULL;
2769 (uuser = usm_next_user(uuser))) {
2770 if (uuser->user_engine_len == elen &&
2771 strlen(uname) == strlen(uuser->suser.sec_name) &&
2772 strcmp(uname, uuser->suser.sec_name) == 0 &&
2773 memcmp(eid, uuser->user_engine_id, elen) == 0)
2777 if ((uuser = (struct usm_user *)malloc(sizeof(*uuser))) == NULL)
2780 memset(uuser, 0, sizeof(struct usm_user));
2781 strlcpy(uuser->suser.sec_name, uname, SNMP_ADM_STR32_SIZ);
2782 memcpy(uuser->user_engine_id, eid, elen);
2783 uuser->user_engine_len = elen;
2785 if ((prev = SLIST_FIRST(&usm_userlist)) == NULL ||
2786 usm_compare_user(uuser, prev) < 0) {
2787 SLIST_INSERT_HEAD(&usm_userlist, uuser, up);
2791 SLIST_FOREACH(temp, &usm_userlist, up) {
2792 if ((cmp = usm_compare_user(uuser, temp)) <= 0)
2797 if (temp == NULL || cmp < 0)
2798 SLIST_INSERT_AFTER(prev, uuser, up);
2800 SLIST_INSERT_AFTER(temp, uuser, up);
2802 syslog(LOG_ERR, "User %s exists", uuser->suser.sec_name);
2811 usm_delete_user(struct usm_user *uuser)
2813 SLIST_REMOVE(&usm_userlist, uuser, usm_user, up);
2818 usm_flush_users(void)
2820 struct usm_user *uuser;
2822 while ((uuser = SLIST_FIRST(&usm_userlist)) != NULL) {
2823 SLIST_REMOVE_HEAD(&usm_userlist, up);
2827 SLIST_INIT(&usm_userlist);
2831 * RFC 3415 View-based Access Control Model support
2834 vacm_first_user(void)
2836 return (SLIST_FIRST(&vacm_userlist));
2840 vacm_next_user(struct vacm_user *vuser)
2845 return (SLIST_NEXT(vuser, vvu));
2849 vacm_compare_user(struct vacm_user *v1, struct vacm_user *v2)
2853 if (v1->sec_model < v2->sec_model)
2855 if (v1->sec_model > v2->sec_model)
2858 if (strlen(v1->secname) < strlen(v2->secname))
2860 if (strlen(v1->secname) > strlen(v2->secname))
2863 for (i = 0; i < strlen(v1->secname); i++) {
2864 if (v1->secname[i] < v2->secname[i])
2866 if (v1->secname[i] > v2->secname[i])
2874 vacm_new_user(int32_t smodel, char *uname)
2877 struct vacm_user *user, *temp, *prev;
2879 SLIST_FOREACH(user, &vacm_userlist, vvu)
2880 if (strcmp(uname, user->secname) == 0 &&
2881 smodel == user->sec_model)
2884 if ((user = (struct vacm_user *)malloc(sizeof(*user))) == NULL)
2887 memset(user, 0, sizeof(*user));
2888 user->group = &vacm_default_group;
2889 SLIST_INSERT_HEAD(&vacm_default_group.group_users, user, vvg);
2890 user->sec_model = smodel;
2891 strlcpy(user->secname, uname, sizeof(user->secname));
2893 if ((prev = SLIST_FIRST(&vacm_userlist)) == NULL ||
2894 vacm_compare_user(user, prev) < 0) {
2895 SLIST_INSERT_HEAD(&vacm_userlist, user, vvu);
2899 SLIST_FOREACH(temp, &vacm_userlist, vvu) {
2900 if ((cmp = vacm_compare_user(user, temp)) <= 0)
2905 if (temp == NULL || cmp < 0)
2906 SLIST_INSERT_AFTER(prev, user, vvu);
2908 SLIST_INSERT_AFTER(temp, user, vvu);
2910 syslog(LOG_ERR, "User %s exists", user->secname);
2919 vacm_delete_user(struct vacm_user *user)
2921 if (user->group != NULL && user->group != &vacm_default_group) {
2922 SLIST_REMOVE(&user->group->group_users, user, vacm_user, vvg);
2923 if (SLIST_EMPTY(&user->group->group_users)) {
2924 SLIST_REMOVE(&vacm_grouplist, user->group,
2930 SLIST_REMOVE(&vacm_userlist, user, vacm_user, vvu);
2937 vacm_user_set_group(struct vacm_user *user, u_char *octets, u_int len)
2939 struct vacm_group *group;
2941 if (len >= SNMP_ADM_STR32_SIZ)
2944 SLIST_FOREACH(group, &vacm_grouplist, vge)
2945 if (strlen(group->groupname) == len &&
2946 memcmp(octets, group->groupname, len) == 0)
2949 if (group == NULL) {
2950 if ((group = (struct vacm_group *)malloc(sizeof(*group))) == NULL)
2952 memset(group, 0, sizeof(*group));
2953 memcpy(group->groupname, octets, len);
2954 group->groupname[len] = '\0';
2955 SLIST_INSERT_HEAD(&vacm_grouplist, group, vge);
2958 SLIST_REMOVE(&user->group->group_users, user, vacm_user, vvg);
2959 SLIST_INSERT_HEAD(&group->group_users, user, vvg);
2960 user->group = group;
2966 vacm_groups_init(void)
2968 SLIST_INSERT_HEAD(&vacm_grouplist, &vacm_default_group, vge);
2971 struct vacm_access *
2972 vacm_first_access_rule(void)
2974 return (TAILQ_FIRST(&vacm_accesslist));
2977 struct vacm_access *
2978 vacm_next_access_rule(struct vacm_access *acl)
2983 return (TAILQ_NEXT(acl, vva));
2987 vacm_compare_access_rule(struct vacm_access *v1, struct vacm_access *v2)
2991 if (strlen(v1->group->groupname) < strlen(v2->group->groupname))
2993 if (strlen(v1->group->groupname) > strlen(v2->group->groupname))
2996 for (i = 0; i < strlen(v1->group->groupname); i++) {
2997 if (v1->group->groupname[i] < v2->group->groupname[i])
2999 if (v1->group->groupname[i] > v2->group->groupname[i])
3003 if (strlen(v1->ctx_prefix) < strlen(v2->ctx_prefix))
3005 if (strlen(v1->ctx_prefix) > strlen(v2->ctx_prefix))
3008 for (i = 0; i < strlen(v1->ctx_prefix); i++) {
3009 if (v1->ctx_prefix[i] < v2->ctx_prefix[i])
3011 if (v1->ctx_prefix[i] > v2->ctx_prefix[i])
3015 if (v1->sec_model < v2->sec_model)
3017 if (v1->sec_model > v2->sec_model)
3020 if (v1->sec_level < v2->sec_level)
3022 if (v1->sec_level > v2->sec_level)
3028 struct vacm_access *
3029 vacm_new_access_rule(char *gname, char *cprefix, int32_t smodel, int32_t slevel)
3031 struct vacm_group *group;
3032 struct vacm_access *acl, *temp;
3034 TAILQ_FOREACH(acl, &vacm_accesslist, vva) {
3035 if (acl->group == NULL)
3037 if (strcmp(gname, acl->group->groupname) == 0 &&
3038 strcmp(cprefix, acl->ctx_prefix) == 0 &&
3039 acl->sec_model == smodel && acl->sec_level == slevel)
3043 /* Make sure the group exists */
3044 SLIST_FOREACH(group, &vacm_grouplist, vge)
3045 if (strcmp(gname, group->groupname) == 0)
3051 if ((acl = (struct vacm_access *)malloc(sizeof(*acl))) == NULL)
3054 memset(acl, 0, sizeof(*acl));
3056 strlcpy(acl->ctx_prefix, cprefix, sizeof(acl->ctx_prefix));
3057 acl->sec_model = smodel;
3058 acl->sec_level = slevel;
3060 if ((temp = TAILQ_FIRST(&vacm_accesslist)) == NULL ||
3061 vacm_compare_access_rule(acl, temp) < 0) {
3062 TAILQ_INSERT_HEAD(&vacm_accesslist, acl, vva);
3066 TAILQ_FOREACH(temp, &vacm_accesslist, vva)
3067 if (vacm_compare_access_rule(acl, temp) < 0) {
3068 TAILQ_INSERT_BEFORE(temp, acl, vva);
3072 TAILQ_INSERT_TAIL(&vacm_accesslist, acl, vva);
3078 vacm_delete_access_rule(struct vacm_access *acl)
3080 TAILQ_REMOVE(&vacm_accesslist, acl, vva);
3087 vacm_first_view(void)
3089 return (SLIST_FIRST(&vacm_viewlist));
3093 vacm_next_view(struct vacm_view *view)
3098 return (SLIST_NEXT(view, vvl));
3102 vacm_compare_view(struct vacm_view *v1, struct vacm_view *v2)
3106 if (strlen(v1->viewname) < strlen(v2->viewname))
3108 if (strlen(v1->viewname) > strlen(v2->viewname))
3111 for (i = 0; i < strlen(v1->viewname); i++) {
3112 if (v1->viewname[i] < v2->viewname[i])
3114 if (v1->viewname[i] > v2->viewname[i])
3118 return (asn_compare_oid(&v1->subtree, &v2->subtree));
3122 vacm_new_view(char *vname, struct asn_oid *oid)
3125 struct vacm_view *view, *temp, *prev;
3127 SLIST_FOREACH(view, &vacm_viewlist, vvl)
3128 if (strcmp(vname, view->viewname) == 0)
3131 if ((view = (struct vacm_view *)malloc(sizeof(*view))) == NULL)
3134 memset(view, 0, sizeof(*view));
3135 strlcpy(view->viewname, vname, sizeof(view->viewname));
3136 asn_append_oid(&view->subtree, oid);
3138 if ((prev = SLIST_FIRST(&vacm_viewlist)) == NULL ||
3139 vacm_compare_view(view, prev) < 0) {
3140 SLIST_INSERT_HEAD(&vacm_viewlist, view, vvl);
3144 SLIST_FOREACH(temp, &vacm_viewlist, vvl) {
3145 if ((cmp = vacm_compare_view(view, temp)) <= 0)
3150 if (temp == NULL || cmp < 0)
3151 SLIST_INSERT_AFTER(prev, view, vvl);
3153 SLIST_INSERT_AFTER(temp, view, vvl);
3155 syslog(LOG_ERR, "View %s exists", view->viewname);
3164 vacm_delete_view(struct vacm_view *view)
3166 SLIST_REMOVE(&vacm_viewlist, view, vacm_view, vvl);
3172 struct vacm_context *
3173 vacm_first_context(void)
3175 return (SLIST_FIRST(&vacm_contextlist));
3178 struct vacm_context *
3179 vacm_next_context(struct vacm_context *vacmctx)
3181 if (vacmctx == NULL)
3184 return (SLIST_NEXT(vacmctx, vcl));
3187 struct vacm_context *
3188 vacm_add_context(char *ctxname, int regid)
3191 struct vacm_context *ctx, *temp, *prev;
3193 SLIST_FOREACH(ctx, &vacm_contextlist, vcl)
3194 if (strcmp(ctxname, ctx->ctxname) == 0) {
3195 syslog(LOG_ERR, "Context %s exists", ctx->ctxname);
3199 if ((ctx = (struct vacm_context *)malloc(sizeof(*ctx))) == NULL)
3202 memset(ctx, 0, sizeof(*ctx));
3203 strlcpy(ctx->ctxname, ctxname, sizeof(ctx->ctxname));
3206 if ((prev = SLIST_FIRST(&vacm_contextlist)) == NULL ||
3207 strlen(ctx->ctxname) < strlen(prev->ctxname) ||
3208 strcmp(ctx->ctxname, prev->ctxname) < 0) {
3209 SLIST_INSERT_HEAD(&vacm_contextlist, ctx, vcl);
3213 SLIST_FOREACH(temp, &vacm_contextlist, vcl) {
3214 if (strlen(ctx->ctxname) < strlen(temp->ctxname) ||
3215 strcmp(ctx->ctxname, temp->ctxname) < 0) {
3222 if (temp == NULL || cmp < 0)
3223 SLIST_INSERT_AFTER(prev, ctx, vcl);
3225 SLIST_INSERT_AFTER(temp, ctx, vcl);
3227 syslog(LOG_ERR, "Context %s exists", ctx->ctxname);
3236 vacm_flush_contexts(int regid)
3238 struct vacm_context *ctx, *temp;
3240 SLIST_FOREACH_SAFE(ctx, &vacm_contextlist, vcl, temp)
3241 if (ctx->regid == regid) {
3242 SLIST_REMOVE(&vacm_contextlist, ctx, vacm_context, vcl);