2 * Copyright (c) 2001-2003
3 * Fraunhofer Institute for Open Communication Systems (FhG Fokus).
6 * Author: Harti Brandt <harti@freebsd.org>
8 * Copyright (c) 2010 The FreeBSD Foundation
11 * Portions of this software were developed by Shteryana Sotirova Shopova
12 * under sponsorship from the FreeBSD Foundation.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * $Begemot: bsnmp/snmpd/main.c,v 1.100 2006/02/14 09:04:20 brandt_h Exp $
40 #include <sys/queue.h>
41 #include <sys/param.h>
43 #include <sys/ucred.h>
58 #ifdef USE_TCPWRAPPERS
59 #include <arpa/inet.h>
69 #define PATH_PID "/var/run/%s.pid"
70 #define PATH_CONFIG "/etc/%s.config"
71 #define PATH_ENGINE "/var/%s.engine"
73 uint64_t this_tick; /* start of processing of current packet (absolute) */
74 uint64_t start_tick; /* start of processing */
76 struct systemg systemg = {
78 { 8, { 1, 3, 6, 1, 4, 1, 1115, 7352 }},
83 struct debug debug = {
85 LOG_DEBUG, /* log_pri */
89 struct snmpd snmpd = {
94 {0, 0, 0, 0}, /* trap1addr */
95 VERS_ENABLE_ALL,/* version_enable */
97 struct snmpd_stats snmpd_stats;
99 struct snmpd_usmstat snmpd_usmstats;
102 struct snmp_engine snmpd_engine;
105 int32_t snmp_serial_no;
107 struct snmpd_target_stats snmpd_target_stats;
109 /* search path for config files */
110 const char *syspath = PATH_SYSCONFIG;
112 /* list of all loaded modules */
113 struct lmodules lmodules = TAILQ_HEAD_INITIALIZER(lmodules);
115 /* list of loaded modules during start-up in the order they were loaded */
116 static struct lmodules modules_start = TAILQ_HEAD_INITIALIZER(modules_start);
118 /* list of all known communities */
119 struct community_list community_list = TAILQ_HEAD_INITIALIZER(community_list);
121 /* list of all known USM users */
122 struct usm_userlist usm_userlist = SLIST_HEAD_INITIALIZER(usm_userlist);
124 /* A list of all VACM users configured, including v1, v2c and v3 */
125 struct vacm_userlist vacm_userlist = SLIST_HEAD_INITIALIZER(vacm_userlist);
127 /* A list of all VACM groups */
128 struct vacm_grouplist vacm_grouplist = SLIST_HEAD_INITIALIZER(vacm_grouplist);
130 static struct vacm_group vacm_default_group = {
134 /* The list of configured access entries */
135 struct vacm_accesslist vacm_accesslist = TAILQ_HEAD_INITIALIZER(vacm_accesslist);
137 /* The list of configured views */
138 struct vacm_viewlist vacm_viewlist = SLIST_HEAD_INITIALIZER(vacm_viewlist);
140 /* The list of configured contexts */
141 struct vacm_contextlist vacm_contextlist =
142 SLIST_HEAD_INITIALIZER(vacm_contextlist);
144 /* list of all installed object resources */
145 struct objres_list objres_list = TAILQ_HEAD_INITIALIZER(objres_list);
147 /* community value generator */
148 static u_int next_community_index = 1;
150 /* list of all known ranges */
151 struct idrange_list idrange_list = TAILQ_HEAD_INITIALIZER(idrange_list);
153 /* identifier generator */
154 u_int next_idrange = 1;
156 /* list of all current timers */
157 struct timer_list timer_list = LIST_HEAD_INITIALIZER(timer_list);
159 /* list of file descriptors */
160 struct fdesc_list fdesc_list = LIST_HEAD_INITIALIZER(fdesc_list);
162 /* program arguments */
163 static char **progargs;
164 static int nprogargs;
166 /* current community */
168 static struct community *comm;
170 /* current USM user */
171 struct usm_user *usm_user;
174 static char config_file[MAXPATHLEN + 1];
175 static char pid_file[MAXPATHLEN + 1];
176 char engine_file[MAXPATHLEN + 1];
178 #ifndef USE_LIBBEGEMOT
180 static evContext evctx;
184 static sigset_t blocked_sigs;
186 /* signal handling */
188 #define WORK_DOINFO 0x0001
189 #define WORK_RECONFIG 0x0002
192 static const struct asn_oid
193 oid_snmpMIB = OIDX_snmpMIB,
194 oid_begemotSnmpd = OIDX_begemotSnmpd,
195 oid_coldStart = OIDX_coldStart,
196 oid_authenticationFailure = OIDX_authenticationFailure;
198 const struct asn_oid oid_zeroDotZero = { 2, { 0, 0 }};
200 const struct asn_oid oid_usmUnknownEngineIDs =
201 { 11, { 1, 3, 6, 1, 6, 3, 15, 1, 1, 4, 0}};
203 const struct asn_oid oid_usmNotInTimeWindows =
204 { 11, { 1, 3, 6, 1, 6, 3, 15, 1, 1, 2, 0}};
206 /* request id generator for traps */
210 static const char usgtxt[] = "\
211 Begemot simple SNMP daemon. Copyright (c) 2001-2002 Fraunhofer Institute for\n\
212 Open Communication Systems (FhG Fokus). All rights reserved.\n\
213 Copyright (c) 2010 The FreeBSD Foundation. All rights reserved.\n\
214 usage: snmpd [-dh] [-c file] [-D options] [-e file] [-I path]\n\
215 [-l prefix] [-m variable=value] [-p file]\n\
217 -d don't daemonize\n\
218 -h print this info\n\
219 -c file specify configuration file\n\
220 -D options debugging options\n\
221 -e file specify engine id file\n\
222 -I path system include path\n\
223 -l prefix default basename for pid and config file\n\
224 -m var=val define variable\n\
225 -p file specify pid file\n\
228 /* hosts_access(3) request */
229 #ifdef USE_TCPWRAPPERS
230 static struct request_info req;
234 extern const struct transport_def udp_trans;
235 extern const struct transport_def lsock_trans;
237 struct transport_list transport_list = TAILQ_HEAD_INITIALIZER(transport_list);
239 /* forward declarations */
240 static void snmp_printf_func(const char *fmt, ...);
241 static void snmp_error_func(const char *err, ...);
242 static void snmp_debug_func(const char *err, ...);
243 static void asn_error_func(const struct asn_buf *b, const char *err, ...);
246 * Allocate rx/tx buffer. We allocate one byte more for rx.
253 if ((buf = malloc(tx ? snmpd.txbuf : snmpd.rxbuf)) == NULL) {
254 syslog(LOG_CRIT, "cannot allocate buffer");
256 snmpd_stats.noTxbuf++;
258 snmpd_stats.noRxbuf++;
265 * Return the buffer size.
270 return (tx ? snmpd.txbuf : snmpd.rxbuf);
274 * Prepare a PDU for output
277 snmp_output(struct snmp_pdu *pdu, u_char *sndbuf, size_t *sndlen,
280 struct asn_buf resp_b;
282 resp_b.asn_ptr = sndbuf;
283 resp_b.asn_len = snmpd.txbuf;
285 if (snmp_pdu_encode(pdu, &resp_b) != 0) {
286 syslog(LOG_ERR, "cannot encode message");
289 if (debug.dump_pdus) {
290 snmp_printf("%s <- ", dest);
293 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
297 * Check USM PDU header credentials against local SNMP Engine & users.
299 static enum snmp_code
300 snmp_pdu_auth_user(struct snmp_pdu *pdu)
305 /* un-authenticated snmpEngineId discovery */
306 if (pdu->engine.engine_len == 0 && strlen(pdu->user.sec_name) == 0) {
307 pdu->engine.engine_len = snmpd_engine.engine_len;
308 memcpy(pdu->engine.engine_id, snmpd_engine.engine_id,
309 snmpd_engine.engine_len);
310 pdu->engine.engine_boots = snmpd_engine.engine_boots;
311 pdu->engine.engine_time = snmpd_engine.engine_time;
312 pdu->flags |= SNMP_MSG_AUTODISCOVER;
313 return (SNMP_CODE_OK);
316 if ((usm_user = usm_find_user(pdu->engine.engine_id,
317 pdu->engine.engine_len, pdu->user.sec_name)) == NULL ||
318 usm_user->status != 1 /* active */)
319 return (SNMP_CODE_BADUSER);
321 if (usm_user->user_engine_len != snmpd_engine.engine_len ||
322 memcmp(usm_user->user_engine_id, snmpd_engine.engine_id,
323 snmpd_engine.engine_len) != 0)
324 return (SNMP_CODE_BADENGINE);
326 pdu->user.priv_proto = usm_user->suser.priv_proto;
327 memcpy(pdu->user.priv_key, usm_user->suser.priv_key,
328 sizeof(pdu->user.priv_key));
330 /* authenticated snmpEngineId discovery */
331 if ((pdu->flags & SNMP_MSG_AUTH_FLAG) != 0) {
332 etime = (get_ticks() - start_tick) / 100ULL;
333 if (etime < INT32_MAX)
334 snmpd_engine.engine_time = etime;
336 start_tick = get_ticks();
338 snmpd_engine.engine_time = start_tick;
341 pdu->user.auth_proto = usm_user->suser.auth_proto;
342 memcpy(pdu->user.auth_key, usm_user->suser.auth_key,
343 sizeof(pdu->user.auth_key));
345 if (pdu->engine.engine_boots == 0 &&
346 pdu->engine.engine_time == 0) {
347 pdu->flags |= SNMP_MSG_AUTODISCOVER;
348 return (SNMP_CODE_OK);
351 if (pdu->engine.engine_boots != snmpd_engine.engine_boots ||
352 abs(pdu->engine.engine_time - snmpd_engine.engine_time) >
354 return (SNMP_CODE_NOTINTIME);
357 if (((pdu->flags & SNMP_MSG_PRIV_FLAG) != 0 &&
358 (pdu->flags & SNMP_MSG_AUTH_FLAG) == 0) ||
359 ((pdu->flags & SNMP_MSG_AUTH_FLAG) == 0 &&
360 usm_user->suser.auth_proto != SNMP_AUTH_NOAUTH) ||
361 ((pdu->flags & SNMP_MSG_PRIV_FLAG) == 0 &&
362 usm_user->suser.priv_proto != SNMP_PRIV_NOPRIV))
363 return (SNMP_CODE_BADSECLEVEL);
365 return (SNMP_CODE_OK);
369 * Check whether access to each of var bindings in the PDU is allowed based
370 * on the user credentials against the configured User groups & VACM views.
373 snmp_pdu_auth_access(struct snmp_pdu *pdu, int32_t *ip)
376 int32_t suboid, smodel;
378 struct vacm_user *vuser;
379 struct vacm_access *acl;
380 struct vacm_context *vacmctx;
381 struct vacm_view *view;
384 * At least a default context exists if the snmpd_vacm(3) module is
387 if (SLIST_EMPTY(&vacm_contextlist) ||
388 (pdu->flags & SNMP_MSG_AUTODISCOVER) != 0)
389 return (SNMP_CODE_OK);
391 switch (pdu->version) {
393 if ((uname = comm_string(community)) == NULL)
394 return (SNMP_CODE_FAILED);
395 smodel = SNMP_SECMODEL_SNMPv1;
399 if ((uname = comm_string(community)) == NULL)
400 return (SNMP_CODE_FAILED);
401 smodel = SNMP_SECMODEL_SNMPv2c;
405 uname = pdu->user.sec_name;
406 if ((smodel = pdu->security_model) != SNMP_SECMODEL_USM)
407 return (SNMP_CODE_FAILED);
408 /* Compare the PDU context engine id against the agent's */
409 if (pdu->context_engine_len != snmpd_engine.engine_len ||
410 memcmp(pdu->context_engine, snmpd_engine.engine_id,
411 snmpd_engine.engine_len) != 0)
412 return (SNMP_CODE_FAILED);
419 SLIST_FOREACH(vuser, &vacm_userlist, vvu)
420 if (strcmp(uname, vuser->secname) == 0 &&
421 vuser->sec_model == smodel)
424 if (vuser == NULL || vuser->group == NULL)
425 return (SNMP_CODE_FAILED);
427 /* XXX: shteryana - recheck */
428 TAILQ_FOREACH_REVERSE(acl, &vacm_accesslist, vacm_accesslist, vva) {
429 if (acl->group != vuser->group)
431 SLIST_FOREACH(vacmctx, &vacm_contextlist, vcl)
432 if (memcmp(vacmctx->ctxname, acl->ctx_prefix,
433 acl->ctx_match) == 0)
437 return (SNMP_CODE_FAILED);
443 case SNMP_PDU_GETNEXT:
444 case SNMP_PDU_GETBULK:
445 if ((view = acl->read_view) == NULL)
446 return (SNMP_CODE_FAILED);
450 if ((view = acl->write_view) == NULL)
451 return (SNMP_CODE_FAILED);
455 case SNMP_PDU_INFORM:
457 case SNMP_PDU_REPORT:
458 if ((view = acl->notify_view) == NULL)
459 return (SNMP_CODE_FAILED);
461 case SNMP_PDU_RESPONSE:
463 return (SNMP_CODE_FAILED);
468 for (i = 0; i < pdu->nbindings; i++) {
469 /* XXX - view->mask*/
470 suboid = asn_is_suboid(&view->subtree, &pdu->bindings[i].var);
471 if ((!suboid && !view->exclude) || (suboid && view->exclude)) {
473 return (SNMP_CODE_FAILED);
477 return (SNMP_CODE_OK);
481 * SNMP input. Start: decode the PDU, find the user or community.
484 snmp_input_start(const u_char *buf, size_t len, const char *source,
485 struct snmp_pdu *pdu, int32_t *ip, size_t *pdulen)
489 enum snmpd_input_err ret;
493 this_tick = get_ticks();
498 /* look whether we have enough bytes for the entire PDU. */
499 switch (sret = snmp_pdu_snoop(&b)) {
502 return (SNMPD_INPUT_TRUNC);
505 snmpd_stats.inASNParseErrs++;
506 return (SNMPD_INPUT_FAILED);
508 b.asn_len = *pdulen = (size_t)sret;
510 memset(pdu, 0, sizeof(*pdu));
511 if ((code = snmp_pdu_decode_header(&b, pdu)) != SNMP_CODE_OK)
514 if (pdu->version == SNMP_V3) {
515 if (pdu->security_model != SNMP_SECMODEL_USM) {
516 code = SNMP_CODE_FAILED;
519 if ((code = snmp_pdu_auth_user(pdu)) != SNMP_CODE_OK)
521 if ((code = snmp_pdu_decode_secmode(&b, pdu)) != SNMP_CODE_OK)
524 code = snmp_pdu_decode_scoped(&b, pdu, ip);
526 ret = SNMPD_INPUT_OK;
529 snmpd_stats.inPkts++;
533 case SNMP_CODE_FAILED:
534 snmpd_stats.inASNParseErrs++;
535 return (SNMPD_INPUT_FAILED);
537 case SNMP_CODE_BADVERS:
539 snmpd_stats.inBadVersions++;
540 return (SNMPD_INPUT_FAILED);
542 case SNMP_CODE_BADLEN:
543 if (pdu->type == SNMP_OP_SET)
544 ret = SNMPD_INPUT_VALBADLEN;
547 case SNMP_CODE_OORANGE:
548 if (pdu->type == SNMP_OP_SET)
549 ret = SNMPD_INPUT_VALRANGE;
552 case SNMP_CODE_BADENC:
553 if (pdu->type == SNMP_OP_SET)
554 ret = SNMPD_INPUT_VALBADENC;
557 case SNMP_CODE_BADSECLEVEL:
558 snmpd_usmstats.unsupported_seclevels++;
559 return (SNMPD_INPUT_FAILED);
561 case SNMP_CODE_NOTINTIME:
562 snmpd_usmstats.not_in_time_windows++;
563 return (SNMPD_INPUT_FAILED);
565 case SNMP_CODE_BADUSER:
566 snmpd_usmstats.unknown_users++;
567 return (SNMPD_INPUT_FAILED);
569 case SNMP_CODE_BADENGINE:
570 snmpd_usmstats.unknown_engine_ids++;
571 return (SNMPD_INPUT_FAILED);
573 case SNMP_CODE_BADDIGEST:
574 snmpd_usmstats.wrong_digests++;
575 return (SNMPD_INPUT_FAILED);
577 case SNMP_CODE_EDECRYPT:
578 snmpd_usmstats.decrypt_errors++;
579 return (SNMPD_INPUT_FAILED);
582 switch (pdu->version) {
585 if (!(snmpd.version_enable & VERS_ENABLE_V1))
590 if (!(snmpd.version_enable & VERS_ENABLE_V2C))
595 if (!(snmpd.version_enable & VERS_ENABLE_V3))
605 if (debug.dump_pdus) {
606 snmp_printf("%s -> ", source);
611 * Look, whether we know the community or user
614 if (pdu->version != SNMP_V3) {
615 TAILQ_FOREACH(comm, &community_list, link)
616 if (comm->string != NULL &&
617 strcmp(comm->string, pdu->community) == 0)
621 snmpd_stats.inBadCommunityNames++;
623 if (snmpd.auth_traps)
624 snmp_send_trap(&oid_authenticationFailure,
625 (struct snmp_value *)NULL);
626 ret = SNMPD_INPUT_BAD_COMM;
628 community = comm->value;
629 } else if (pdu->nbindings == 0) {
630 /* RFC 3414 - snmpEngineID Discovery */
631 if (strlen(pdu->user.sec_name) == 0) {
632 asn_append_oid(&(pdu->bindings[pdu->nbindings++].var),
633 &oid_usmUnknownEngineIDs);
634 pdu->context_engine_len = snmpd_engine.engine_len;
635 memcpy(pdu->context_engine, snmpd_engine.engine_id,
636 snmpd_engine.engine_len);
637 } else if (pdu->engine.engine_boots == 0 &&
638 pdu->engine.engine_time == 0) {
639 asn_append_oid(&(pdu->bindings[pdu->nbindings++].var),
640 &oid_usmNotInTimeWindows);
641 pdu->engine.engine_boots = snmpd_engine.engine_boots;
642 pdu->engine.engine_time = snmpd_engine.engine_time;
644 } else if (usm_user->suser.auth_proto != SNMP_AUTH_NOAUTH &&
645 (pdu->engine.engine_boots == 0 || pdu->engine.engine_time == 0)) {
646 snmpd_usmstats.not_in_time_windows++;
647 ret = SNMP_CODE_FAILED;
650 if ((code = snmp_pdu_auth_access(pdu, ip)) != SNMP_CODE_OK)
651 ret = SNMP_CODE_FAILED;
657 * Will return only _OK or _FAILED
660 snmp_input_finish(struct snmp_pdu *pdu, const u_char *rcvbuf, size_t rcvlen,
661 u_char *sndbuf, size_t *sndlen, const char *source,
662 enum snmpd_input_err ierr, int32_t ivar, void *data)
664 struct snmp_pdu resp;
665 struct asn_buf resp_b, pdu_b;
668 resp_b.asn_ptr = sndbuf;
669 resp_b.asn_len = snmpd.txbuf;
671 pdu_b.asn_cptr = rcvbuf;
672 pdu_b.asn_len = rcvlen;
674 if (ierr != SNMPD_INPUT_OK) {
675 /* error decoding the input of a SET */
676 if (pdu->version == SNMP_V1)
677 pdu->error_status = SNMP_ERR_BADVALUE;
678 else if (ierr == SNMPD_INPUT_VALBADLEN)
679 pdu->error_status = SNMP_ERR_WRONG_LENGTH;
680 else if (ierr == SNMPD_INPUT_VALRANGE)
681 pdu->error_status = SNMP_ERR_WRONG_VALUE;
683 pdu->error_status = SNMP_ERR_WRONG_ENCODING;
685 pdu->error_index = ivar;
687 if (snmp_make_errresp(pdu, &pdu_b, &resp_b) == SNMP_RET_IGN) {
688 syslog(LOG_WARNING, "could not encode error response");
689 snmpd_stats.silentDrops++;
690 return (SNMPD_INPUT_FAILED);
693 if (debug.dump_pdus) {
694 snmp_printf("%s <- ", source);
697 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
698 return (SNMPD_INPUT_OK);
704 ret = snmp_get(pdu, &resp_b, &resp, data);
707 case SNMP_PDU_GETNEXT:
708 ret = snmp_getnext(pdu, &resp_b, &resp, data);
712 ret = snmp_set(pdu, &resp_b, &resp, data);
715 case SNMP_PDU_GETBULK:
716 ret = snmp_getbulk(pdu, &resp_b, &resp, data);
727 /* normal return - send a response */
728 if (debug.dump_pdus) {
729 snmp_printf("%s <- ", source);
730 snmp_pdu_dump(&resp);
732 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
733 snmp_pdu_free(&resp);
734 return (SNMPD_INPUT_OK);
737 /* error - send nothing */
738 snmpd_stats.silentDrops++;
739 return (SNMPD_INPUT_FAILED);
742 /* error - send error response. The snmp routine has
743 * changed the error fields in the original message. */
744 resp_b.asn_ptr = sndbuf;
745 resp_b.asn_len = snmpd.txbuf;
746 if (snmp_make_errresp(pdu, &pdu_b, &resp_b) == SNMP_RET_IGN) {
747 syslog(LOG_WARNING, "could not encode error response");
748 snmpd_stats.silentDrops++;
749 return (SNMPD_INPUT_FAILED);
751 if (debug.dump_pdus) {
752 snmp_printf("%s <- ", source);
755 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
756 return (SNMPD_INPUT_OK);
763 * Insert a port into the right place in the transport's table of ports
766 trans_insert_port(struct transport *t, struct tport *port)
770 TAILQ_FOREACH(p, &t->table, link) {
771 if (asn_compare_oid(&p->index, &port->index) > 0) {
772 TAILQ_INSERT_BEFORE(p, port, link);
777 TAILQ_INSERT_TAIL(&t->table, port, link);
781 * Remove a port from a transport's list
784 trans_remove_port(struct tport *port)
787 TAILQ_REMOVE(&port->transport->table, port, link);
791 * Find a port on a transport's list
794 trans_find_port(struct transport *t, const struct asn_oid *idx, u_int sub)
797 return (FIND_OBJECT_OID(&t->table, idx, sub));
801 * Find next port on a transport's list
804 trans_next_port(struct transport *t, const struct asn_oid *idx, u_int sub)
807 return (NEXT_OBJECT_OID(&t->table, idx, sub));
814 trans_first_port(struct transport *t)
817 return (TAILQ_FIRST(&t->table));
821 * Iterate through all ports until a function returns a 0.
824 trans_iter_port(struct transport *t, int (*func)(struct tport *, intptr_t),
829 TAILQ_FOREACH(p, &t->table, link)
830 if (func(p, arg) == 0)
836 * Register a transport
839 trans_register(const struct transport_def *def, struct transport **pp)
844 if ((*pp = malloc(sizeof(**pp))) == NULL)
845 return (SNMP_ERR_GENERR);
847 /* construct index */
848 (*pp)->index.len = strlen(def->name) + 1;
849 (*pp)->index.subs[0] = strlen(def->name);
850 for (i = 0; i < (*pp)->index.subs[0]; i++)
851 (*pp)->index.subs[i + 1] = def->name[i];
855 if (FIND_OBJECT_OID(&transport_list, &(*pp)->index, 0) != NULL) {
857 return (SNMP_ERR_INCONS_VALUE);
860 /* register module */
861 snprintf(or_descr, sizeof(or_descr), "%s transport mapping", def->name);
862 if (((*pp)->or_index = or_register(&def->id, or_descr, NULL)) == 0) {
864 return (SNMP_ERR_GENERR);
867 INSERT_OBJECT_OID((*pp), &transport_list);
869 TAILQ_INIT(&(*pp)->table);
871 return (SNMP_ERR_NOERROR);
875 * Unregister transport
878 trans_unregister(struct transport *t)
880 if (!TAILQ_EMPTY(&t->table))
881 return (SNMP_ERR_INCONS_VALUE);
883 or_unregister(t->or_index);
884 TAILQ_REMOVE(&transport_list, t, link);
886 return (SNMP_ERR_NOERROR);
890 * File descriptor support
892 #ifdef USE_LIBBEGEMOT
894 input(int fd, int mask __unused, void *uap)
897 input(evContext ctx __unused, void *uap, int fd, int mask __unused)
900 struct fdesc *f = uap;
902 (*f->func)(fd, f->udata);
910 #ifdef USE_LIBBEGEMOT
912 poll_unregister(f->id);
916 if (evTestID(f->id)) {
917 (void)evDeselectFD(evctx, f->id);
929 #ifdef USE_LIBBEGEMOT
932 if ((f->id = poll_register(f->fd, input, f, POLL_IN)) < 0) {
934 syslog(LOG_ERR, "select fd %d: %m", f->fd);
941 if (evSelectFD(evctx, f->fd, EV_READ, input, f, &f->id)) {
943 syslog(LOG_ERR, "select fd %d: %m", f->fd);
952 fd_select(int fd, void (*func)(int, void *), void *udata, struct lmodule *mod)
957 if ((f = malloc(sizeof(struct fdesc))) == NULL) {
959 syslog(LOG_ERR, "fd_select: %m");
967 #ifdef USE_LIBBEGEMOT
980 LIST_INSERT_HEAD(&fdesc_list, f, link);
990 LIST_REMOVE(f, link);
996 fd_flush(struct lmodule *mod)
998 struct fdesc *t, *t1;
1000 t = LIST_FIRST(&fdesc_list);
1002 t1 = LIST_NEXT(t, link);
1003 if (t->owner == mod)
1010 * Consume a message from the input buffer
1013 snmp_input_consume(struct port_input *pi)
1016 /* always consume everything */
1020 if (pi->consumed >= pi->length) {
1021 /* all bytes consumed */
1025 memmove(pi->buf, pi->buf + pi->consumed, pi->length - pi->consumed);
1026 pi->length -= pi->consumed;
1030 check_priv_dgram(struct port_input *pi, struct sockcred *cred)
1033 /* process explicitly sends credentials */
1035 pi->priv = (cred->sc_euid == 0);
1041 check_priv_stream(struct port_input *pi)
1043 struct xucred ucred;
1046 /* obtain the accept time credentials */
1047 ucredlen = sizeof(ucred);
1049 if (getsockopt(pi->fd, 0, LOCAL_PEERCRED, &ucred, &ucredlen) == 0 &&
1050 ucredlen >= sizeof(ucred) && ucred.cr_version == XUCRED_VERSION)
1051 pi->priv = (ucred.cr_uid == 0);
1057 * Input from a stream socket.
1060 recv_stream(struct port_input *pi)
1063 struct iovec iov[1];
1066 if (pi->buf == NULL) {
1067 /* no buffer yet - allocate one */
1068 if ((pi->buf = buf_alloc(0)) == NULL) {
1069 /* ups - could not get buffer. Return an error
1070 * the caller must close the transport. */
1073 pi->buflen = buf_size(0);
1078 /* try to get a message */
1079 msg.msg_name = pi->peer;
1080 msg.msg_namelen = pi->peerlen;
1083 msg.msg_control = NULL;
1084 msg.msg_controllen = 0;
1087 iov[0].iov_base = pi->buf + pi->length;
1088 iov[0].iov_len = pi->buflen - pi->length;
1090 len = recvmsg(pi->fd, &msg, 0);
1092 if (len == -1 || len == 0)
1099 check_priv_stream(pi);
1105 * Input from a datagram socket.
1106 * Each receive should return one datagram.
1109 recv_dgram(struct port_input *pi, struct in_addr *laddr)
1112 char cbuf[CMSG_SPACE(SOCKCREDSIZE(CMGROUP_MAX)) +
1113 CMSG_SPACE(sizeof(struct in_addr))];
1115 struct iovec iov[1];
1117 struct cmsghdr *cmsg;
1118 struct sockcred *cred = NULL;
1120 if (pi->buf == NULL) {
1121 /* no buffer yet - allocate one */
1122 if ((pi->buf = buf_alloc(0)) == NULL) {
1123 /* ups - could not get buffer. Read away input
1125 (void)recvfrom(pi->fd, embuf, sizeof(embuf),
1130 pi->buflen = buf_size(0);
1133 /* try to get a message */
1134 msg.msg_name = pi->peer;
1135 msg.msg_namelen = pi->peerlen;
1138 memset(cbuf, 0, sizeof(cbuf));
1139 msg.msg_control = cbuf;
1140 msg.msg_controllen = sizeof(cbuf);
1143 iov[0].iov_base = pi->buf;
1144 iov[0].iov_len = pi->buflen;
1146 len = recvmsg(pi->fd, &msg, 0);
1148 if (len == -1 || len == 0)
1152 if (msg.msg_flags & MSG_TRUNC) {
1153 /* truncated - drop */
1154 snmpd_stats.silentDrops++;
1155 snmpd_stats.inTooLong++;
1159 pi->length = (size_t)len;
1161 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL;
1162 cmsg = CMSG_NXTHDR(&msg, cmsg)) {
1163 if (cmsg->cmsg_level == IPPROTO_IP &&
1164 cmsg->cmsg_type == IP_RECVDSTADDR)
1165 memcpy(laddr, CMSG_DATA(cmsg), sizeof(struct in_addr));
1166 if (cmsg->cmsg_level == SOL_SOCKET &&
1167 cmsg->cmsg_type == SCM_CREDS)
1168 cred = (struct sockcred *)CMSG_DATA(cmsg);
1172 check_priv_dgram(pi, cred);
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 struct iovec iov[1];
1196 char cbuf[CMSG_SPACE(sizeof(struct in_addr))];
1197 struct cmsghdr *cmsgp;
1199 /* get input depending on the transport */
1201 msg.msg_control = NULL;
1202 msg.msg_controllen = 0;
1204 ret = recv_stream(pi);
1206 struct in_addr *laddr;
1208 memset(cbuf, 0, CMSG_SPACE(sizeof(struct in_addr)));
1209 msg.msg_control = cbuf;
1210 msg.msg_controllen = CMSG_SPACE(sizeof(struct in_addr));
1211 cmsgp = CMSG_FIRSTHDR(&msg);
1212 cmsgp->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
1213 cmsgp->cmsg_level = IPPROTO_IP;
1214 cmsgp->cmsg_type = IP_SENDSRCADDR;
1215 laddr = (struct in_addr *)CMSG_DATA(cmsgp);
1217 ret = recv_dgram(pi, laddr);
1219 if (laddr->s_addr == 0) {
1220 msg.msg_control = NULL;
1221 msg.msg_controllen = 0;
1228 #ifdef USE_TCPWRAPPERS
1230 * In case of AF_INET{6} peer, do hosts_access(5) check.
1232 if (pi->peer->sa_family != AF_LOCAL &&
1233 inet_ntop(pi->peer->sa_family,
1234 &((const struct sockaddr_in *)(const void *)pi->peer)->sin_addr,
1235 client, sizeof(client)) != NULL) {
1236 request_set(&req, RQ_CLIENT_ADDR, client, 0);
1237 if (hosts_access(&req) == 0) {
1238 syslog(LOG_ERR, "refused connection from %.500s",
1242 } else if (pi->peer->sa_family != AF_LOCAL)
1243 syslog(LOG_ERR, "inet_ntop(): %m");
1249 ierr = snmp_input_start(pi->buf, pi->length, "SNMP", &pdu, &vi,
1251 if (ierr == SNMPD_INPUT_TRUNC) {
1252 /* need more bytes. This is ok only for streaming transports.
1253 * but only if we have not reached bufsiz yet. */
1255 if (pi->length == buf_size(0)) {
1256 snmpd_stats.silentDrops++;
1261 snmpd_stats.silentDrops++;
1265 /* can't check for bad SET pdus here, because a proxy may have to
1266 * check the access first. We don't want to return an error response
1267 * to a proxy PDU with a wrong community */
1268 if (ierr == SNMPD_INPUT_FAILED) {
1269 /* for streaming transports this is fatal */
1272 snmp_input_consume(pi);
1275 if (ierr == SNMPD_INPUT_BAD_COMM) {
1276 snmp_input_consume(pi);
1281 * If that is a module community and the module has a proxy function,
1282 * the hand it over to the module.
1284 if (comm != NULL && comm->owner != NULL &&
1285 comm->owner->config->proxy != NULL) {
1286 perr = (*comm->owner->config->proxy)(&pdu, tport->transport,
1287 &tport->index, pi->peer, pi->peerlen, ierr, vi,
1288 !pi->cred || pi->priv);
1292 case SNMPD_PROXY_OK:
1293 snmp_input_consume(pi);
1296 case SNMPD_PROXY_REJ:
1299 case SNMPD_PROXY_DROP:
1300 snmp_input_consume(pi);
1301 snmp_pdu_free(&pdu);
1302 snmpd_stats.proxyDrops++;
1305 case SNMPD_PROXY_BADCOMM:
1306 snmp_input_consume(pi);
1307 snmp_pdu_free(&pdu);
1308 snmpd_stats.inBadCommunityNames++;
1309 if (snmpd.auth_traps)
1310 snmp_send_trap(&oid_authenticationFailure,
1311 (struct snmp_value *)NULL);
1314 case SNMPD_PROXY_BADCOMMUSE:
1315 snmp_input_consume(pi);
1316 snmp_pdu_free(&pdu);
1317 snmpd_stats.inBadCommunityUses++;
1318 if (snmpd.auth_traps)
1319 snmp_send_trap(&oid_authenticationFailure,
1320 (struct snmp_value *)NULL);
1328 if (pdu.type == SNMP_PDU_RESPONSE ||
1329 pdu.type == SNMP_PDU_TRAP ||
1330 pdu.type == SNMP_PDU_TRAP2) {
1331 snmpd_stats.silentDrops++;
1332 snmpd_stats.inBadPduTypes++;
1333 snmp_pdu_free(&pdu);
1334 snmp_input_consume(pi);
1341 if (pdu.version < SNMP_V3 &&
1342 ((pi->cred && !pi->priv && pdu.type == SNMP_PDU_SET) ||
1343 (community != COMM_WRITE &&
1344 (pdu.type == SNMP_PDU_SET || community != COMM_READ)))) {
1345 snmpd_stats.inBadCommunityUses++;
1346 snmp_pdu_free(&pdu);
1347 snmp_input_consume(pi);
1348 if (snmpd.auth_traps)
1349 snmp_send_trap(&oid_authenticationFailure,
1350 (struct snmp_value *)NULL);
1357 if ((sndbuf = buf_alloc(1)) == NULL) {
1358 snmpd_stats.silentDrops++;
1359 snmp_pdu_free(&pdu);
1360 snmp_input_consume(pi);
1363 ferr = snmp_input_finish(&pdu, pi->buf, pi->length,
1364 sndbuf, &sndlen, "SNMP", ierr, vi, NULL);
1366 if (ferr == SNMPD_INPUT_OK) {
1367 msg.msg_name = pi->peer;
1368 msg.msg_namelen = pi->peerlen;
1372 iov[0].iov_base = sndbuf;
1373 iov[0].iov_len = sndlen;
1375 slen = sendmsg(pi->fd, &msg, 0);
1377 syslog(LOG_ERR, "sendmsg: %m");
1378 else if ((size_t)slen != sndlen)
1379 syslog(LOG_ERR, "sendmsg: short write %zu/%zu",
1380 sndlen, (size_t)slen);
1382 snmp_pdu_free(&pdu);
1384 snmp_input_consume(pi);
1390 * Send a PDU to a given port
1393 snmp_send_port(void *targ, const struct asn_oid *port, struct snmp_pdu *pdu,
1394 const struct sockaddr *addr, socklen_t addrlen)
1396 struct transport *trans = targ;
1402 TAILQ_FOREACH(tp, &trans->table, link)
1403 if (asn_compare_oid(port, &tp->index) == 0)
1408 if ((sndbuf = buf_alloc(1)) == NULL)
1411 snmp_output(pdu, sndbuf, &sndlen, "SNMP PROXY");
1413 len = trans->vtab->send(tp, sndbuf, sndlen, addr, addrlen);
1416 syslog(LOG_ERR, "sendto: %m");
1417 else if ((size_t)len != sndlen)
1418 syslog(LOG_ERR, "sendto: short write %zu/%zu",
1419 sndlen, (size_t)len);
1426 * Close an input source
1429 snmpd_input_close(struct port_input *pi)
1432 fd_deselect(pi->id);
1434 (void)close(pi->fd);
1435 if (pi->buf != NULL)
1440 * Dump internal state.
1442 #ifdef USE_LIBBEGEMOT
1447 info_func(evContext ctx __unused, void *uap __unused, const void *tag __unused)
1454 syslog(LOG_DEBUG, "Dump of SNMPd %lu\n", (u_long)getpid());
1455 for (i = 0; i < tree_size; i++) {
1456 switch (tree[i].type) {
1458 case SNMP_NODE_LEAF:
1459 sprintf(buf, "LEAF: %s %s", tree[i].name,
1460 asn_oid2str(&tree[i].oid));
1463 case SNMP_NODE_COLUMN:
1464 sprintf(buf, "COL: %s %s", tree[i].name,
1465 asn_oid2str(&tree[i].oid));
1468 syslog(LOG_DEBUG, "%s", buf);
1471 TAILQ_FOREACH(m, &lmodules, link)
1472 if (m->config->dump)
1473 (*m->config->dump)();
1477 * Re-read configuration
1479 #ifdef USE_LIBBEGEMOT
1484 config_func(evContext ctx __unused, void *uap __unused,
1485 const void *tag __unused)
1490 if (read_config(config_file, NULL)) {
1491 syslog(LOG_ERR, "error reading config file '%s'", config_file);
1494 TAILQ_FOREACH(m, &lmodules, link)
1495 if (m->config->config)
1496 (*m->config->config)();
1500 * On USR1 dump actual configuration.
1503 onusr1(int s __unused)
1506 work |= WORK_DOINFO;
1509 onhup(int s __unused)
1512 work |= WORK_RECONFIG;
1516 onterm(int s __unused)
1519 /* allow clean-up */
1526 struct sigaction sa;
1528 sa.sa_handler = onusr1;
1529 sa.sa_flags = SA_RESTART;
1530 sigemptyset(&sa.sa_mask);
1531 if (sigaction(SIGUSR1, &sa, NULL)) {
1532 syslog(LOG_ERR, "sigaction: %m");
1536 sa.sa_handler = onhup;
1537 if (sigaction(SIGHUP, &sa, NULL)) {
1538 syslog(LOG_ERR, "sigaction: %m");
1542 sa.sa_handler = onterm;
1544 sigemptyset(&sa.sa_mask);
1545 if (sigaction(SIGTERM, &sa, NULL)) {
1546 syslog(LOG_ERR, "sigaction: %m");
1549 if (sigaction(SIGINT, &sa, NULL)) {
1550 syslog(LOG_ERR, "sigaction: %m");
1561 if (sigprocmask(SIG_BLOCK, &set, &blocked_sigs) == -1) {
1562 syslog(LOG_ERR, "SIG_BLOCK: %m");
1569 if (sigprocmask(SIG_SETMASK, &blocked_sigs, NULL) == -1) {
1570 syslog(LOG_ERR, "SIG_SETMASK: %m");
1581 (void)unlink(pid_file);
1587 struct transport *t;
1589 TAILQ_FOREACH(t, &transport_list, link)
1590 (void)t->vtab->stop(1);
1594 * Define a macro from the command line
1602 if ((eq = strchr(arg, '=')) == NULL)
1603 err = define_macro(arg, "");
1606 err = define_macro(arg, eq);
1609 syslog(LOG_ERR, "cannot save macro: %m");
1615 * Re-implement getsubopt from scratch, because the second argument is broken
1616 * and will not compile with WARNS=5.
1619 getsubopt1(char **arg, const char *const *options, char **valp, char **optp)
1621 static const char *const delim = ",\t ";
1627 /* skip leading junk */
1628 for (ptr = *arg; *ptr != '\0'; ptr++)
1629 if (strchr(delim, *ptr) == NULL)
1637 /* find the end of the option */
1638 while (*++ptr != '\0')
1639 if (strchr(delim, *ptr) != NULL || *ptr == '=')
1646 while (*ptr != '\0' && strchr(delim, *ptr) == NULL)
1656 for (i = 0; *options != NULL; options++, i++)
1657 if (strcmp(*optp, *options) == 0)
1663 main(int argc, char *argv[])
1669 const char *prefix = "snmpd";
1671 char *value = NULL, *option; /* XXX */
1672 struct transport *t;
1675 #define DBG_EVENTS 1
1677 static const char *const debug_opts[] = {
1684 snmp_printf = snmp_printf_func;
1685 snmp_error = snmp_error_func;
1686 snmp_debug = snmp_debug_func;
1687 asn_error = asn_error_func;
1689 while ((opt = getopt(argc, argv, "c:dD:e:hI:l:m:p:")) != EOF)
1693 strlcpy(config_file, optarg, sizeof(config_file));
1702 switch (getsubopt1(&optarg, debug_opts,
1706 debug.dump_pdus = 1;
1716 "no value for 'trace'");
1718 snmp_trace = strtoul(value,
1725 "unknown debug flag '%s'",
1729 "missing debug flag");
1736 strlcpy(engine_file, optarg, sizeof(engine_file));
1739 fprintf(stderr, "%s", usgtxt);
1755 strlcpy(pid_file, optarg, sizeof(pid_file));
1759 openlog(prefix, LOG_PID | (background ? 0 : LOG_PERROR), LOG_USER);
1760 setlogmask(LOG_UPTO(debug.logpri - 1));
1762 if (background && daemon(0, 0) < 0) {
1763 syslog(LOG_ERR, "daemon: %m");
1775 snmp_serial_no = random();
1777 #ifdef USE_TCPWRAPPERS
1779 * Initialize hosts_access(3) handler.
1781 request_init(&req, RQ_DAEMON, "snmpd", 0);
1786 * Initialize the tree.
1788 if ((tree = malloc(sizeof(struct snmp_node) * CTREE_SIZE)) == NULL) {
1789 syslog(LOG_ERR, "%m");
1792 memcpy(tree, ctree, sizeof(struct snmp_node) * CTREE_SIZE);
1793 tree_size = CTREE_SIZE;
1796 * Get standard communities
1798 (void)comm_define(1, "SNMP read", NULL, NULL);
1799 (void)comm_define(2, "SNMP write", NULL, NULL);
1800 community = COMM_INITIALIZE;
1802 trap_reqid = reqid_allocate(512, NULL);
1804 if (config_file[0] == '\0')
1805 snprintf(config_file, sizeof(config_file), PATH_CONFIG, prefix);
1808 init_snmpd_engine();
1810 this_tick = get_ticks();
1811 start_tick = this_tick;
1813 /* start transports */
1814 if (atexit(trans_stop) == -1) {
1815 syslog(LOG_ERR, "atexit failed: %m");
1818 if (udp_trans.start() != SNMP_ERR_NOERROR)
1819 syslog(LOG_WARNING, "cannot start UDP transport");
1820 if (lsock_trans.start() != SNMP_ERR_NOERROR)
1821 syslog(LOG_WARNING, "cannot start LSOCK transport");
1823 #ifdef USE_LIBBEGEMOT
1824 if (debug.evdebug > 0)
1827 if (evCreate(&evctx)) {
1828 syslog(LOG_ERR, "evCreate: %m");
1831 if (debug.evdebug > 0)
1832 evSetDebug(evctx, 10, stderr);
1835 if (engine_file[0] == '\0')
1836 snprintf(engine_file, sizeof(engine_file), PATH_ENGINE, prefix);
1838 if (read_config(config_file, NULL)) {
1839 syslog(LOG_ERR, "error in config file");
1843 TAILQ_FOREACH(t, &transport_list, link)
1844 TAILQ_FOREACH(p, &t->table, link)
1845 t->vtab->init_port(p);
1849 if (pid_file[0] == '\0')
1850 snprintf(pid_file, sizeof(pid_file), PATH_PID, prefix);
1852 if ((fp = fopen(pid_file, "w")) != NULL) {
1853 fprintf(fp, "%u", getpid());
1855 if (atexit(term) == -1) {
1856 syslog(LOG_ERR, "atexit failed: %m");
1857 (void)remove(pid_file);
1862 if (or_register(&oid_snmpMIB, "The MIB module for SNMPv2 entities.",
1864 syslog(LOG_ERR, "cannot register SNMPv2 MIB");
1867 if (or_register(&oid_begemotSnmpd, "The MIB module for the Begemot SNMPd.",
1869 syslog(LOG_ERR, "cannot register begemotSnmpd MIB");
1873 while ((m = TAILQ_FIRST(&modules_start)) != NULL) {
1874 m->flags &= ~LM_ONSTARTLIST;
1875 TAILQ_REMOVE(&modules_start, m, start);
1879 snmp_send_trap(&oid_coldStart, (struct snmp_value *)NULL);
1882 #ifndef USE_LIBBEGEMOT
1885 struct lmodule *mod;
1887 TAILQ_FOREACH(mod, &lmodules, link)
1888 if (mod->config->idle != NULL)
1889 (*mod->config->idle)();
1891 #ifndef USE_LIBBEGEMOT
1892 if (evGetNext(evctx, &event, EV_WAIT) == 0) {
1893 if (evDispatch(evctx, event))
1894 syslog(LOG_ERR, "evDispatch: %m");
1895 } else if (errno != EINTR) {
1896 syslog(LOG_ERR, "evGetNext: %m");
1905 if (work & WORK_DOINFO) {
1906 #ifdef USE_LIBBEGEMOT
1909 if (evWaitFor(evctx, &work, info_func,
1910 NULL, NULL) == -1) {
1911 syslog(LOG_ERR, "evWaitFor: %m");
1916 if (work & WORK_RECONFIG) {
1917 #ifdef USE_LIBBEGEMOT
1920 if (evWaitFor(evctx, &work, config_func,
1921 NULL, NULL) == -1) {
1922 syslog(LOG_ERR, "evWaitFor: %m");
1929 #ifndef USE_LIBBEGEMOT
1930 if (evDo(evctx, &work) == -1) {
1931 syslog(LOG_ERR, "evDo: %m");
1947 if (gettimeofday(&tv, NULL))
1949 ret = tv.tv_sec * 100ULL + tv.tv_usec / 10000ULL;
1958 * Trampoline for the non-repeatable timers.
1960 #ifdef USE_LIBBEGEMOT
1962 tfunc(int tid __unused, void *uap)
1965 tfunc(evContext ctx __unused, void *uap, struct timespec due __unused,
1966 struct timespec inter __unused)
1969 struct timer *tp = uap;
1971 LIST_REMOVE(tp, link);
1972 tp->func(tp->udata);
1977 * Trampoline for the repeatable timers.
1979 #ifdef USE_LIBBEGEMOT
1981 trfunc(int tid __unused, void *uap)
1984 trfunc(evContext ctx __unused, void *uap, struct timespec due __unused,
1985 struct timespec inter __unused)
1988 struct timer *tp = uap;
1990 tp->func(tp->udata);
1994 * Start a one-shot timer
1997 timer_start(u_int ticks, void (*func)(void *), void *udata, struct lmodule *mod)
2000 #ifndef USE_LIBBEGEMOT
2001 struct timespec due;
2004 if ((tp = malloc(sizeof(struct timer))) == NULL) {
2005 syslog(LOG_CRIT, "out of memory for timer");
2009 #ifndef USE_LIBBEGEMOT
2010 due = evAddTime(evNowTime(),
2011 evConsTime(ticks / 100, (ticks % 100) * 10000));
2018 LIST_INSERT_HEAD(&timer_list, tp, link);
2020 #ifdef USE_LIBBEGEMOT
2021 if ((tp->id = poll_start_timer(ticks * 10, 0, tfunc, tp)) < 0) {
2022 syslog(LOG_ERR, "cannot set timer: %m");
2026 if (evSetTimer(evctx, tfunc, tp, due, evConsTime(0, 0), &tp->id)
2028 syslog(LOG_ERR, "cannot set timer: %m");
2036 * Start a repeatable timer. When used with USE_LIBBEGEMOT the first argument
2037 * is currently ignored and the initial number of ticks is set to the
2038 * repeat number of ticks.
2041 timer_start_repeat(u_int ticks __unused, u_int repeat_ticks,
2042 void (*func)(void *), void *udata, struct lmodule *mod)
2045 #ifndef USE_LIBBEGEMOT
2046 struct timespec due;
2047 struct timespec inter;
2050 if ((tp = malloc(sizeof(struct timer))) == NULL) {
2051 syslog(LOG_CRIT, "out of memory for timer");
2055 #ifndef USE_LIBBEGEMOT
2056 due = evAddTime(evNowTime(),
2057 evConsTime(ticks / 100, (ticks % 100) * 10000));
2058 inter = evConsTime(repeat_ticks / 100, (repeat_ticks % 100) * 10000);
2065 LIST_INSERT_HEAD(&timer_list, tp, link);
2067 #ifdef USE_LIBBEGEMOT
2068 if ((tp->id = poll_start_timer(repeat_ticks * 10, 1, trfunc, tp)) < 0) {
2069 syslog(LOG_ERR, "cannot set timer: %m");
2073 if (evSetTimer(evctx, trfunc, tp, due, inter, &tp->id) == -1) {
2074 syslog(LOG_ERR, "cannot set timer: %m");
2087 struct timer *tp = p;
2089 LIST_REMOVE(tp, link);
2090 #ifdef USE_LIBBEGEMOT
2091 poll_stop_timer(tp->id);
2093 if (evClearTimer(evctx, tp->id) == -1) {
2094 syslog(LOG_ERR, "cannot stop timer: %m");
2102 timer_flush(struct lmodule *mod)
2104 struct timer *t, *t1;
2106 t = LIST_FIRST(&timer_list);
2108 t1 = LIST_NEXT(t, link);
2109 if (t->owner == mod)
2116 snmp_printf_func(const char *fmt, ...)
2119 static char *pend = NULL;
2123 vasprintf(&ret, fmt, ap);
2129 if ((new = realloc(pend, strlen(pend) + strlen(ret) + 1))
2140 while ((ret = strchr(pend, '\n')) != NULL) {
2142 syslog(LOG_DEBUG, "%s", pend);
2143 if (strlen(ret + 1) == 0) {
2148 strcpy(pend, ret + 1);
2153 snmp_error_func(const char *err, ...)
2158 if (!(snmp_trace & LOG_SNMP_ERRORS))
2162 snprintf(errbuf, sizeof(errbuf), "SNMP: ");
2163 vsnprintf(errbuf + strlen(errbuf),
2164 sizeof(errbuf) - strlen(errbuf), err, ap);
2167 syslog(LOG_ERR, "%s", errbuf);
2171 snmp_debug_func(const char *err, ...)
2177 snprintf(errbuf, sizeof(errbuf), "SNMP: ");
2178 vsnprintf(errbuf+strlen(errbuf), sizeof(errbuf)-strlen(errbuf),
2182 syslog(LOG_DEBUG, "%s", errbuf);
2186 asn_error_func(const struct asn_buf *b, const char *err, ...)
2192 if (!(snmp_trace & LOG_ASN1_ERRORS))
2196 snprintf(errbuf, sizeof(errbuf), "ASN.1: ");
2197 vsnprintf(errbuf + strlen(errbuf),
2198 sizeof(errbuf) - strlen(errbuf), err, ap);
2202 snprintf(errbuf + strlen(errbuf),
2203 sizeof(errbuf) - strlen(errbuf), " at");
2204 for (i = 0; b->asn_len > i; i++)
2205 snprintf(errbuf + strlen(errbuf),
2206 sizeof(errbuf) - strlen(errbuf),
2207 " %02x", b->asn_cptr[i]);
2210 syslog(LOG_ERR, "%s", errbuf);
2214 * Create a new community
2217 comm_define(u_int priv, const char *descr, struct lmodule *owner,
2220 struct community *c, *p;
2223 /* generate an identifier */
2225 if ((ncomm = next_community_index++) == UINT_MAX)
2226 next_community_index = 1;
2227 TAILQ_FOREACH(c, &community_list, link)
2228 if (c->value == ncomm)
2230 } while (c != NULL);
2232 if ((c = malloc(sizeof(struct community))) == NULL) {
2233 syslog(LOG_ERR, "comm_define: %m");
2243 if((c->string = malloc(strlen(str)+1)) == NULL) {
2247 strcpy(c->string, str);
2251 if (c->owner == NULL) {
2253 c->index.subs[0] = 0;
2255 c->index = c->owner->index;
2257 c->index.subs[c->index.len++] = c->private;
2262 TAILQ_FOREACH(p, &community_list, link) {
2263 if (asn_compare_oid(&p->index, &c->index) > 0) {
2264 TAILQ_INSERT_BEFORE(p, c, link);
2269 TAILQ_INSERT_TAIL(&community_list, c, link);
2274 comm_string(u_int ncomm)
2276 struct community *p;
2278 TAILQ_FOREACH(p, &community_list, link)
2279 if (p->value == ncomm)
2285 * Delete all communities allocated by a module
2288 comm_flush(struct lmodule *mod)
2290 struct community *p, *p1;
2292 p = TAILQ_FIRST(&community_list);
2294 p1 = TAILQ_NEXT(p, link);
2295 if (p->owner == mod) {
2297 TAILQ_REMOVE(&community_list, p, link);
2305 * Request ID handling.
2307 * Allocate a new range of request ids. Use a first fit algorithm.
2310 reqid_allocate(int size, struct lmodule *mod)
2313 struct idrange *r, *r1;
2315 if (size <= 0 || size > INT32_MAX) {
2316 syslog(LOG_CRIT, "%s: size out of range: %d", __func__, size);
2319 /* allocate a type id */
2321 if ((type = next_idrange++) == UINT_MAX)
2323 TAILQ_FOREACH(r, &idrange_list, link)
2324 if (r->type == type)
2329 if (TAILQ_EMPTY(&idrange_list))
2332 r = TAILQ_FIRST(&idrange_list);
2333 if (r->base < size) {
2334 while((r1 = TAILQ_NEXT(r, link)) != NULL) {
2335 if (r1->base - (r->base + r->size) >= size)
2342 r1 = TAILQ_LAST(&idrange_list, idrange_list);
2343 if (INT32_MAX - size + 1 < r1->base + r1->size) {
2344 syslog(LOG_ERR, "out of id ranges (%u)", size);
2350 /* allocate structure */
2351 if ((r1 = malloc(sizeof(struct idrange))) == NULL) {
2352 syslog(LOG_ERR, "%s: %m", __FUNCTION__);
2359 if (TAILQ_EMPTY(&idrange_list) || r == TAILQ_FIRST(&idrange_list)) {
2361 TAILQ_INSERT_HEAD(&idrange_list, r1, link);
2362 } else if (r == NULL) {
2363 r = TAILQ_LAST(&idrange_list, idrange_list);
2364 r1->base = r->base + r->size;
2365 TAILQ_INSERT_TAIL(&idrange_list, r1, link);
2367 r = TAILQ_PREV(r, idrange_list, link);
2368 r1->base = r->base + r->size;
2369 TAILQ_INSERT_AFTER(&idrange_list, r, r1, link);
2371 r1->next = r1->base;
2377 reqid_next(u_int type)
2382 TAILQ_FOREACH(r, &idrange_list, link)
2383 if (r->type == type)
2386 syslog(LOG_CRIT, "wrong idrange type");
2389 if ((id = r->next++) == r->base + (r->size - 1))
2395 reqid_base(u_int type)
2399 TAILQ_FOREACH(r, &idrange_list, link)
2400 if (r->type == type)
2402 syslog(LOG_CRIT, "wrong idrange type");
2407 reqid_type(int32_t reqid)
2411 TAILQ_FOREACH(r, &idrange_list, link)
2412 if (reqid >= r->base && reqid <= r->base + (r->size - 1))
2418 reqid_istype(int32_t reqid, u_int type)
2420 return (reqid_type(reqid) == type);
2424 * Delete all communities allocated by a module
2427 reqid_flush(struct lmodule *mod)
2429 struct idrange *p, *p1;
2431 p = TAILQ_FIRST(&idrange_list);
2433 p1 = TAILQ_NEXT(p, link);
2434 if (p->owner == mod) {
2435 TAILQ_REMOVE(&idrange_list, p, link);
2443 * Merge the given tree for the given module into the main tree.
2446 compare_node(const void *v1, const void *v2)
2448 const struct snmp_node *n1 = v1;
2449 const struct snmp_node *n2 = v2;
2451 return (asn_compare_oid(&n1->oid, &n2->oid));
2454 tree_merge(const struct snmp_node *ntree, u_int nsize, struct lmodule *mod)
2456 struct snmp_node *xtree;
2459 xtree = realloc(tree, sizeof(*tree) * (tree_size + nsize));
2460 if (xtree == NULL) {
2461 syslog(LOG_ERR, "tree_merge: %m");
2465 memcpy(&tree[tree_size], ntree, sizeof(*tree) * nsize);
2467 for (i = 0; i < nsize; i++)
2468 tree[tree_size + i].tree_data = mod;
2472 qsort(tree, tree_size, sizeof(tree[0]), compare_node);
2478 * Remove all nodes belonging to the loadable module
2481 tree_unmerge(struct lmodule *mod)
2485 for(s = d = 0; s < tree_size; s++)
2486 if (tree[s].tree_data != mod) {
2498 lm_load(const char *path, const char *section)
2503 char *av[MAX_MOD_ARGS + 1];
2507 if ((m = malloc(sizeof(*m))) == NULL) {
2508 syslog(LOG_ERR, "lm_load: %m");
2513 strcpy(m->section, section);
2515 if ((m->path = malloc(strlen(path) + 1)) == NULL) {
2516 syslog(LOG_ERR, "lm_load: %m");
2519 strcpy(m->path, path);
2524 m->index.subs[0] = strlen(section);
2525 m->index.len = m->index.subs[0] + 1;
2526 for (u = 0; u < m->index.subs[0]; u++)
2527 m->index.subs[u + 1] = section[u];
2530 * Load the object file and locate the config structure
2532 if ((m->handle = dlopen(m->path, RTLD_NOW|RTLD_GLOBAL)) == NULL) {
2533 syslog(LOG_ERR, "lm_load: open %s", dlerror());
2537 if ((m->config = dlsym(m->handle, "config")) == NULL) {
2538 syslog(LOG_ERR, "lm_load: no 'config' symbol %s", dlerror());
2543 * Insert it into the right place
2545 INSERT_OBJECT_OID(m, &lmodules);
2547 /* preserve order */
2548 if (community == COMM_INITIALIZE) {
2549 m->flags |= LM_ONSTARTLIST;
2550 TAILQ_INSERT_TAIL(&modules_start, m, start);
2554 * make the argument vector.
2557 for (i = 0; i < nprogargs; i++) {
2558 if (strlen(progargs[i]) >= strlen(section) + 1 &&
2559 strncmp(progargs[i], section, strlen(section)) == 0 &&
2560 progargs[i][strlen(section)] == ':') {
2561 if (ac == MAX_MOD_ARGS) {
2562 syslog(LOG_WARNING, "too many arguments for "
2563 "module '%s", section);
2566 av[ac++] = &progargs[i][strlen(section)+1];
2572 * Run the initialization function
2574 if ((err = (*m->config->init)(m, ac, av)) != 0) {
2575 syslog(LOG_ERR, "lm_load: init failed: %d", err);
2576 TAILQ_REMOVE(&lmodules, m, link);
2583 if ((m->flags & LM_ONSTARTLIST) != 0)
2584 TAILQ_REMOVE(&modules_start, m, start);
2596 lm_start(struct lmodule *mod)
2598 const struct lmodule *m;
2601 * Merge tree. If this fails, unload the module.
2603 if (tree_merge(mod->config->tree, mod->config->tree_size, mod)) {
2609 * Read configuration
2611 if (read_config(config_file, mod)) {
2612 syslog(LOG_ERR, "error in config file");
2616 if (mod->config->start)
2617 (*mod->config->start)();
2619 mod->flags |= LM_STARTED;
2622 * Inform other modules
2624 TAILQ_FOREACH(m, &lmodules, link)
2625 if (m->config->loading)
2626 (*m->config->loading)(mod, 1);
2634 lm_unload(struct lmodule *m)
2637 const struct lmodule *mod;
2639 TAILQ_REMOVE(&lmodules, m, link);
2640 if (m->flags & LM_ONSTARTLIST)
2641 TAILQ_REMOVE(&modules_start, m, start);
2644 if ((m->flags & LM_STARTED) && m->config->fini &&
2645 (err = (*m->config->fini)()) != 0)
2646 syslog(LOG_WARNING, "lm_unload(%s): fini %d", m->section, err);
2657 * Inform other modules
2659 TAILQ_FOREACH(mod, &lmodules, link)
2660 if (mod->config->loading)
2661 (*mod->config->loading)(m, 0);
2667 * Register an object resource and return the index (or 0 on failures)
2670 or_register(const struct asn_oid *or, const char *descr, struct lmodule *mod)
2672 struct objres *objres, *or1;
2675 /* find a free index */
2677 for (objres = TAILQ_FIRST(&objres_list);
2679 objres = TAILQ_NEXT(objres, link)) {
2680 if ((or1 = TAILQ_NEXT(objres, link)) == NULL ||
2681 or1->index > objres->index + 1) {
2682 idx = objres->index + 1;
2687 if ((objres = malloc(sizeof(*objres))) == NULL)
2690 objres->index = idx;
2692 strlcpy(objres->descr, descr, sizeof(objres->descr));
2693 objres->uptime = (uint32_t)(get_ticks() - start_tick);
2694 objres->module = mod;
2696 INSERT_OBJECT_INT(objres, &objres_list);
2698 systemg.or_last_change = objres->uptime;
2704 or_unregister(u_int idx)
2706 struct objres *objres;
2708 TAILQ_FOREACH(objres, &objres_list, link)
2709 if (objres->index == idx) {
2710 TAILQ_REMOVE(&objres_list, objres, link);
2717 * RFC 3414 User-based Security Model support
2720 struct snmpd_usmstat *
2721 bsnmpd_get_usm_stats(void)
2723 return (&snmpd_usmstats);
2727 bsnmpd_reset_usm_stats(void)
2729 memset(&snmpd_usmstats, 0, sizeof(snmpd_usmstats));
2733 usm_first_user(void)
2735 return (SLIST_FIRST(&usm_userlist));
2739 usm_next_user(struct usm_user *uuser)
2744 return (SLIST_NEXT(uuser, up));
2748 usm_find_user(uint8_t *engine, uint32_t elen, char *uname)
2750 struct usm_user *uuser;
2752 SLIST_FOREACH(uuser, &usm_userlist, up)
2753 if (uuser->user_engine_len == elen &&
2754 memcmp(uuser->user_engine_id, engine, elen) == 0 &&
2755 strlen(uuser->suser.sec_name) == strlen(uname) &&
2756 strcmp(uuser->suser.sec_name, uname) == 0)
2763 usm_compare_user(struct usm_user *u1, struct usm_user *u2)
2767 if (u1->user_engine_len < u2->user_engine_len)
2769 if (u1->user_engine_len > u2->user_engine_len)
2772 for (i = 0; i < u1->user_engine_len; i++) {
2773 if (u1->user_engine_id[i] < u2->user_engine_id[i])
2775 if (u1->user_engine_id[i] > u2->user_engine_id[i])
2779 if (strlen(u1->suser.sec_name) < strlen(u2->suser.sec_name))
2781 if (strlen(u1->suser.sec_name) > strlen(u2->suser.sec_name))
2784 for (i = 0; i < strlen(u1->suser.sec_name); i++) {
2785 if (u1->suser.sec_name[i] < u2->suser.sec_name[i])
2787 if (u1->suser.sec_name[i] > u2->suser.sec_name[i])
2795 usm_new_user(uint8_t *eid, uint32_t elen, char *uname)
2798 struct usm_user *uuser, *temp, *prev;
2800 for (uuser = usm_first_user(); uuser != NULL;
2801 (uuser = usm_next_user(uuser))) {
2802 if (uuser->user_engine_len == elen &&
2803 strlen(uname) == strlen(uuser->suser.sec_name) &&
2804 strcmp(uname, uuser->suser.sec_name) == 0 &&
2805 memcmp(eid, uuser->user_engine_id, elen) == 0)
2809 if ((uuser = (struct usm_user *)malloc(sizeof(*uuser))) == NULL)
2812 memset(uuser, 0, sizeof(struct usm_user));
2813 strlcpy(uuser->suser.sec_name, uname, SNMP_ADM_STR32_SIZ);
2814 memcpy(uuser->user_engine_id, eid, elen);
2815 uuser->user_engine_len = elen;
2817 if ((prev = SLIST_FIRST(&usm_userlist)) == NULL ||
2818 usm_compare_user(uuser, prev) < 0) {
2819 SLIST_INSERT_HEAD(&usm_userlist, uuser, up);
2823 SLIST_FOREACH(temp, &usm_userlist, up) {
2824 if ((cmp = usm_compare_user(uuser, temp)) <= 0)
2829 if (temp == NULL || cmp < 0)
2830 SLIST_INSERT_AFTER(prev, uuser, up);
2832 SLIST_INSERT_AFTER(temp, uuser, up);
2834 syslog(LOG_ERR, "User %s exists", uuser->suser.sec_name);
2843 usm_delete_user(struct usm_user *uuser)
2845 SLIST_REMOVE(&usm_userlist, uuser, usm_user, up);
2850 usm_flush_users(void)
2852 struct usm_user *uuser;
2854 while ((uuser = SLIST_FIRST(&usm_userlist)) != NULL) {
2855 SLIST_REMOVE_HEAD(&usm_userlist, up);
2859 SLIST_INIT(&usm_userlist);
2863 * RFC 3415 View-based Access Control Model support
2866 vacm_first_user(void)
2868 return (SLIST_FIRST(&vacm_userlist));
2872 vacm_next_user(struct vacm_user *vuser)
2877 return (SLIST_NEXT(vuser, vvu));
2881 vacm_compare_user(struct vacm_user *v1, struct vacm_user *v2)
2885 if (v1->sec_model < v2->sec_model)
2887 if (v1->sec_model > v2->sec_model)
2890 if (strlen(v1->secname) < strlen(v2->secname))
2892 if (strlen(v1->secname) > strlen(v2->secname))
2895 for (i = 0; i < strlen(v1->secname); i++) {
2896 if (v1->secname[i] < v2->secname[i])
2898 if (v1->secname[i] > v2->secname[i])
2906 vacm_new_user(int32_t smodel, char *uname)
2909 struct vacm_user *user, *temp, *prev;
2911 SLIST_FOREACH(user, &vacm_userlist, vvu)
2912 if (strcmp(uname, user->secname) == 0 &&
2913 smodel == user->sec_model)
2916 if ((user = (struct vacm_user *)malloc(sizeof(*user))) == NULL)
2919 memset(user, 0, sizeof(*user));
2920 user->group = &vacm_default_group;
2921 SLIST_INSERT_HEAD(&vacm_default_group.group_users, user, vvg);
2922 user->sec_model = smodel;
2923 strlcpy(user->secname, uname, sizeof(user->secname));
2925 if ((prev = SLIST_FIRST(&vacm_userlist)) == NULL ||
2926 vacm_compare_user(user, prev) < 0) {
2927 SLIST_INSERT_HEAD(&vacm_userlist, user, vvu);
2931 SLIST_FOREACH(temp, &vacm_userlist, vvu) {
2932 if ((cmp = vacm_compare_user(user, temp)) <= 0)
2937 if (temp == NULL || cmp < 0)
2938 SLIST_INSERT_AFTER(prev, user, vvu);
2940 SLIST_INSERT_AFTER(temp, user, vvu);
2942 syslog(LOG_ERR, "User %s exists", user->secname);
2951 vacm_delete_user(struct vacm_user *user)
2953 if (user->group != NULL && user->group != &vacm_default_group) {
2954 SLIST_REMOVE(&user->group->group_users, user, vacm_user, vvg);
2955 if (SLIST_EMPTY(&user->group->group_users)) {
2956 SLIST_REMOVE(&vacm_grouplist, user->group,
2962 SLIST_REMOVE(&vacm_userlist, user, vacm_user, vvu);
2969 vacm_user_set_group(struct vacm_user *user, u_char *octets, u_int len)
2971 struct vacm_group *group;
2973 if (len >= SNMP_ADM_STR32_SIZ)
2976 SLIST_FOREACH(group, &vacm_grouplist, vge)
2977 if (strlen(group->groupname) == len &&
2978 memcmp(octets, group->groupname, len) == 0)
2981 if (group == NULL) {
2982 if ((group = (struct vacm_group *)malloc(sizeof(*group))) == NULL)
2984 memset(group, 0, sizeof(*group));
2985 memcpy(group->groupname, octets, len);
2986 group->groupname[len] = '\0';
2987 SLIST_INSERT_HEAD(&vacm_grouplist, group, vge);
2990 SLIST_REMOVE(&user->group->group_users, user, vacm_user, vvg);
2991 SLIST_INSERT_HEAD(&group->group_users, user, vvg);
2992 user->group = group;
2998 vacm_groups_init(void)
3000 SLIST_INSERT_HEAD(&vacm_grouplist, &vacm_default_group, vge);
3003 struct vacm_access *
3004 vacm_first_access_rule(void)
3006 return (TAILQ_FIRST(&vacm_accesslist));
3009 struct vacm_access *
3010 vacm_next_access_rule(struct vacm_access *acl)
3015 return (TAILQ_NEXT(acl, vva));
3019 vacm_compare_access_rule(struct vacm_access *v1, struct vacm_access *v2)
3023 if (strlen(v1->group->groupname) < strlen(v2->group->groupname))
3025 if (strlen(v1->group->groupname) > strlen(v2->group->groupname))
3028 for (i = 0; i < strlen(v1->group->groupname); i++) {
3029 if (v1->group->groupname[i] < v2->group->groupname[i])
3031 if (v1->group->groupname[i] > v2->group->groupname[i])
3035 if (strlen(v1->ctx_prefix) < strlen(v2->ctx_prefix))
3037 if (strlen(v1->ctx_prefix) > strlen(v2->ctx_prefix))
3040 for (i = 0; i < strlen(v1->ctx_prefix); i++) {
3041 if (v1->ctx_prefix[i] < v2->ctx_prefix[i])
3043 if (v1->ctx_prefix[i] > v2->ctx_prefix[i])
3047 if (v1->sec_model < v2->sec_model)
3049 if (v1->sec_model > v2->sec_model)
3052 if (v1->sec_level < v2->sec_level)
3054 if (v1->sec_level > v2->sec_level)
3060 struct vacm_access *
3061 vacm_new_access_rule(char *gname, char *cprefix, int32_t smodel, int32_t slevel)
3063 struct vacm_group *group;
3064 struct vacm_access *acl, *temp;
3066 TAILQ_FOREACH(acl, &vacm_accesslist, vva) {
3067 if (acl->group == NULL)
3069 if (strcmp(gname, acl->group->groupname) == 0 &&
3070 strcmp(cprefix, acl->ctx_prefix) == 0 &&
3071 acl->sec_model == smodel && acl->sec_level == slevel)
3075 /* Make sure the group exists */
3076 SLIST_FOREACH(group, &vacm_grouplist, vge)
3077 if (strcmp(gname, group->groupname) == 0)
3083 if ((acl = (struct vacm_access *)malloc(sizeof(*acl))) == NULL)
3086 memset(acl, 0, sizeof(*acl));
3088 strlcpy(acl->ctx_prefix, cprefix, sizeof(acl->ctx_prefix));
3089 acl->sec_model = smodel;
3090 acl->sec_level = slevel;
3092 if ((temp = TAILQ_FIRST(&vacm_accesslist)) == NULL ||
3093 vacm_compare_access_rule(acl, temp) < 0) {
3094 TAILQ_INSERT_HEAD(&vacm_accesslist, acl, vva);
3098 TAILQ_FOREACH(temp, &vacm_accesslist, vva)
3099 if (vacm_compare_access_rule(acl, temp) < 0) {
3100 TAILQ_INSERT_BEFORE(temp, acl, vva);
3104 TAILQ_INSERT_TAIL(&vacm_accesslist, acl, vva);
3110 vacm_delete_access_rule(struct vacm_access *acl)
3112 TAILQ_REMOVE(&vacm_accesslist, acl, vva);
3119 vacm_first_view(void)
3121 return (SLIST_FIRST(&vacm_viewlist));
3125 vacm_next_view(struct vacm_view *view)
3130 return (SLIST_NEXT(view, vvl));
3134 vacm_compare_view(struct vacm_view *v1, struct vacm_view *v2)
3138 if (strlen(v1->viewname) < strlen(v2->viewname))
3140 if (strlen(v1->viewname) > strlen(v2->viewname))
3143 for (i = 0; i < strlen(v1->viewname); i++) {
3144 if (v1->viewname[i] < v2->viewname[i])
3146 if (v1->viewname[i] > v2->viewname[i])
3150 return (asn_compare_oid(&v1->subtree, &v2->subtree));
3154 vacm_new_view(char *vname, struct asn_oid *oid)
3157 struct vacm_view *view, *temp, *prev;
3159 SLIST_FOREACH(view, &vacm_viewlist, vvl)
3160 if (strcmp(vname, view->viewname) == 0)
3163 if ((view = (struct vacm_view *)malloc(sizeof(*view))) == NULL)
3166 memset(view, 0, sizeof(*view));
3167 strlcpy(view->viewname, vname, sizeof(view->viewname));
3168 asn_append_oid(&view->subtree, oid);
3170 if ((prev = SLIST_FIRST(&vacm_viewlist)) == NULL ||
3171 vacm_compare_view(view, prev) < 0) {
3172 SLIST_INSERT_HEAD(&vacm_viewlist, view, vvl);
3176 SLIST_FOREACH(temp, &vacm_viewlist, vvl) {
3177 if ((cmp = vacm_compare_view(view, temp)) <= 0)
3182 if (temp == NULL || cmp < 0)
3183 SLIST_INSERT_AFTER(prev, view, vvl);
3185 SLIST_INSERT_AFTER(temp, view, vvl);
3187 syslog(LOG_ERR, "View %s exists", view->viewname);
3196 vacm_delete_view(struct vacm_view *view)
3198 SLIST_REMOVE(&vacm_viewlist, view, vacm_view, vvl);
3204 struct vacm_context *
3205 vacm_first_context(void)
3207 return (SLIST_FIRST(&vacm_contextlist));
3210 struct vacm_context *
3211 vacm_next_context(struct vacm_context *vacmctx)
3213 if (vacmctx == NULL)
3216 return (SLIST_NEXT(vacmctx, vcl));
3219 struct vacm_context *
3220 vacm_add_context(char *ctxname, int regid)
3223 struct vacm_context *ctx, *temp, *prev;
3225 SLIST_FOREACH(ctx, &vacm_contextlist, vcl)
3226 if (strcmp(ctxname, ctx->ctxname) == 0) {
3227 syslog(LOG_ERR, "Context %s exists", ctx->ctxname);
3231 if ((ctx = (struct vacm_context *)malloc(sizeof(*ctx))) == NULL)
3234 memset(ctx, 0, sizeof(*ctx));
3235 strlcpy(ctx->ctxname, ctxname, sizeof(ctx->ctxname));
3238 if ((prev = SLIST_FIRST(&vacm_contextlist)) == NULL ||
3239 strlen(ctx->ctxname) < strlen(prev->ctxname) ||
3240 strcmp(ctx->ctxname, prev->ctxname) < 0) {
3241 SLIST_INSERT_HEAD(&vacm_contextlist, ctx, vcl);
3245 SLIST_FOREACH(temp, &vacm_contextlist, vcl) {
3246 if (strlen(ctx->ctxname) < strlen(temp->ctxname) ||
3247 strcmp(ctx->ctxname, temp->ctxname) < 0) {
3254 if (temp == NULL || cmp < 0)
3255 SLIST_INSERT_AFTER(prev, ctx, vcl);
3257 SLIST_INSERT_AFTER(temp, ctx, vcl);
3259 syslog(LOG_ERR, "Context %s exists", ctx->ctxname);
3268 vacm_flush_contexts(int regid)
3270 struct vacm_context *ctx, *temp;
3272 SLIST_FOREACH_SAFE(ctx, &vacm_contextlist, vcl, temp)
3273 if (ctx->regid == regid) {
3274 SLIST_REMOVE(&vacm_contextlist, ctx, vacm_context, vcl);