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>
57 #ifdef USE_TCPWRAPPERS
58 #include <arpa/inet.h>
68 #define PATH_PID "/var/run/%s.pid"
69 #define PATH_CONFIG "/etc/%s.config"
70 #define PATH_ENGINE "/var/%s.engine"
72 uint64_t this_tick; /* start of processing of current packet (absolute) */
73 uint64_t start_tick; /* start of processing */
75 struct systemg systemg = {
77 { 8, { 1, 3, 6, 1, 4, 1, 1115, 7352 }},
82 struct debug debug = {
84 LOG_DEBUG, /* log_pri */
88 struct snmpd snmpd = {
93 {0, 0, 0, 0}, /* trap1addr */
94 VERS_ENABLE_ALL,/* version_enable */
96 struct snmpd_stats snmpd_stats;
98 struct snmpd_usmstat snmpd_usmstats;
101 struct snmp_engine snmpd_engine;
104 int32_t snmp_serial_no;
106 struct snmpd_target_stats snmpd_target_stats;
108 /* search path for config files */
109 const char *syspath = PATH_SYSCONFIG;
111 /* list of all loaded modules */
112 struct lmodules lmodules = TAILQ_HEAD_INITIALIZER(lmodules);
114 /* list of loaded modules during start-up in the order they were loaded */
115 static struct lmodules modules_start = TAILQ_HEAD_INITIALIZER(modules_start);
117 /* list of all known communities */
118 struct community_list community_list = TAILQ_HEAD_INITIALIZER(community_list);
120 /* list of all known USM users */
121 static struct usm_userlist usm_userlist = SLIST_HEAD_INITIALIZER(usm_userlist);
123 /* A list of all VACM users configured, including v1, v2c and v3 */
124 static struct vacm_userlist vacm_userlist =
125 SLIST_HEAD_INITIALIZER(vacm_userlist);
127 /* A list of all VACM groups */
128 static struct vacm_grouplist vacm_grouplist =
129 SLIST_HEAD_INITIALIZER(vacm_grouplist);
131 static struct vacm_group vacm_default_group = {
135 /* The list of configured access entries */
136 static struct vacm_accesslist vacm_accesslist =
137 TAILQ_HEAD_INITIALIZER(vacm_accesslist);
139 /* The list of configured views */
140 static struct vacm_viewlist vacm_viewlist =
141 SLIST_HEAD_INITIALIZER(vacm_viewlist);
143 /* The list of configured contexts */
144 static struct vacm_contextlist vacm_contextlist =
145 SLIST_HEAD_INITIALIZER(vacm_contextlist);
147 /* list of all installed object resources */
148 struct objres_list objres_list = TAILQ_HEAD_INITIALIZER(objres_list);
150 /* community value generator */
151 static u_int next_community_index = 1;
153 /* list of all known ranges */
154 struct idrange_list idrange_list = TAILQ_HEAD_INITIALIZER(idrange_list);
156 /* identifier generator */
157 u_int next_idrange = 1;
159 /* list of all current timers */
160 struct timer_list timer_list = LIST_HEAD_INITIALIZER(timer_list);
162 /* list of file descriptors */
163 struct fdesc_list fdesc_list = LIST_HEAD_INITIALIZER(fdesc_list);
165 /* program arguments */
166 static char **progargs;
167 static int nprogargs;
169 /* current community */
171 static struct community *comm;
173 /* current USM user */
174 struct usm_user *usm_user;
177 static char config_file[MAXPATHLEN + 1];
178 static char pid_file[MAXPATHLEN + 1];
179 char engine_file[MAXPATHLEN + 1];
181 #ifndef USE_LIBBEGEMOT
183 static evContext evctx;
187 static sigset_t blocked_sigs;
189 /* signal handling */
191 #define WORK_DOINFO 0x0001
192 #define WORK_RECONFIG 0x0002
195 static const struct asn_oid
196 oid_snmpMIB = OIDX_snmpMIB,
197 oid_begemotSnmpd = OIDX_begemotSnmpd,
198 oid_coldStart = OIDX_coldStart,
199 oid_authenticationFailure = OIDX_authenticationFailure;
201 const struct asn_oid oid_zeroDotZero = { 2, { 0, 0 }};
203 const struct asn_oid oid_usmUnknownEngineIDs =
204 { 11, { 1, 3, 6, 1, 6, 3, 15, 1, 1, 4, 0}};
206 const struct asn_oid oid_usmNotInTimeWindows =
207 { 11, { 1, 3, 6, 1, 6, 3, 15, 1, 1, 2, 0}};
209 /* request id generator for traps */
213 static const char usgtxt[] = "\
214 Begemot simple SNMP daemon. Copyright (c) 2001-2002 Fraunhofer Institute for\n\
215 Open Communication Systems (FhG Fokus). All rights reserved.\n\
216 Copyright (c) 2010 The FreeBSD Foundation. All rights reserved.\n\
217 usage: snmpd [-dh] [-c file] [-D options] [-e file] [-I path]\n\
218 [-l prefix] [-m variable=value] [-p file]\n\
220 -d don't daemonize\n\
221 -h print this info\n\
222 -c file specify configuration file\n\
223 -D options debugging options\n\
224 -e file specify engine id file\n\
225 -I path system include path\n\
226 -l prefix default basename for pid and config file\n\
227 -m var=val define variable\n\
228 -p file specify pid file\n\
231 /* hosts_access(3) request */
232 #ifdef USE_TCPWRAPPERS
233 static struct request_info req;
237 extern const struct transport_def udp_trans;
238 extern const struct transport_def lsock_trans;
240 struct transport_list transport_list = TAILQ_HEAD_INITIALIZER(transport_list);
242 /* forward declarations */
243 static void snmp_printf_func(const char *fmt, ...);
244 static void snmp_error_func(const char *err, ...);
245 static void snmp_debug_func(const char *err, ...);
246 static void asn_error_func(const struct asn_buf *b, const char *err, ...);
249 * Allocate rx/tx buffer. We allocate one byte more for rx.
256 if ((buf = malloc(tx ? snmpd.txbuf : snmpd.rxbuf)) == NULL) {
257 syslog(LOG_CRIT, "cannot allocate buffer");
259 snmpd_stats.noTxbuf++;
261 snmpd_stats.noRxbuf++;
268 * Return the buffer size.
273 return (tx ? snmpd.txbuf : snmpd.rxbuf);
277 * Prepare a PDU for output
280 snmp_output(struct snmp_pdu *pdu, u_char *sndbuf, size_t *sndlen,
283 struct asn_buf resp_b;
286 resp_b.asn_ptr = sndbuf;
287 resp_b.asn_len = snmpd.txbuf;
289 if ((code = snmp_pdu_encode(pdu, &resp_b)) != SNMP_CODE_OK) {
290 syslog(LOG_ERR, "cannot encode message (code=%d)", code);
293 if (debug.dump_pdus) {
294 snmp_printf("%s <- ", dest);
297 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
301 * Check USM PDU header credentials against local SNMP Engine & users.
303 static enum snmp_code
304 snmp_pdu_auth_user(struct snmp_pdu *pdu)
308 /* un-authenticated snmpEngineId discovery */
309 if (pdu->engine.engine_len == 0 && strlen(pdu->user.sec_name) == 0) {
310 pdu->engine.engine_len = snmpd_engine.engine_len;
311 memcpy(pdu->engine.engine_id, snmpd_engine.engine_id,
312 snmpd_engine.engine_len);
313 update_snmpd_engine_time();
314 pdu->engine.engine_boots = snmpd_engine.engine_boots;
315 pdu->engine.engine_time = snmpd_engine.engine_time;
316 pdu->flags |= SNMP_MSG_AUTODISCOVER;
317 return (SNMP_CODE_OK);
320 if ((usm_user = usm_find_user(pdu->engine.engine_id,
321 pdu->engine.engine_len, pdu->user.sec_name)) == NULL ||
322 usm_user->status != 1 /* active */)
323 return (SNMP_CODE_BADUSER);
325 if (usm_user->user_engine_len != snmpd_engine.engine_len ||
326 memcmp(usm_user->user_engine_id, snmpd_engine.engine_id,
327 snmpd_engine.engine_len) != 0)
328 return (SNMP_CODE_BADENGINE);
330 pdu->user.priv_proto = usm_user->suser.priv_proto;
331 memcpy(pdu->user.priv_key, usm_user->suser.priv_key,
332 sizeof(pdu->user.priv_key));
334 /* authenticated snmpEngineId discovery */
335 if ((pdu->flags & SNMP_MSG_AUTH_FLAG) != 0) {
336 update_snmpd_engine_time();
337 pdu->user.auth_proto = usm_user->suser.auth_proto;
338 memcpy(pdu->user.auth_key, usm_user->suser.auth_key,
339 sizeof(pdu->user.auth_key));
341 if (pdu->engine.engine_boots == 0 &&
342 pdu->engine.engine_time == 0) {
343 update_snmpd_engine_time();
344 pdu->flags |= SNMP_MSG_AUTODISCOVER;
345 return (SNMP_CODE_OK);
348 if (pdu->engine.engine_boots != snmpd_engine.engine_boots ||
349 abs(pdu->engine.engine_time - snmpd_engine.engine_time) >
351 return (SNMP_CODE_NOTINTIME);
354 if (((pdu->flags & SNMP_MSG_PRIV_FLAG) != 0 &&
355 (pdu->flags & SNMP_MSG_AUTH_FLAG) == 0) ||
356 ((pdu->flags & SNMP_MSG_AUTH_FLAG) == 0 &&
357 usm_user->suser.auth_proto != SNMP_AUTH_NOAUTH) ||
358 ((pdu->flags & SNMP_MSG_PRIV_FLAG) == 0 &&
359 usm_user->suser.priv_proto != SNMP_PRIV_NOPRIV))
360 return (SNMP_CODE_BADSECLEVEL);
362 return (SNMP_CODE_OK);
366 * Check whether access to each of var bindings in the PDU is allowed based
367 * on the user credentials against the configured User groups & VACM views.
370 snmp_pdu_auth_access(struct snmp_pdu *pdu, int32_t *ip)
373 int32_t suboid, smodel;
375 struct vacm_user *vuser;
376 struct vacm_access *acl;
377 struct vacm_context *vacmctx;
378 struct vacm_view *view;
381 * At least a default context exists if the snmpd_vacm(3) module is
384 if (SLIST_EMPTY(&vacm_contextlist) ||
385 (pdu->flags & SNMP_MSG_AUTODISCOVER) != 0)
386 return (SNMP_CODE_OK);
388 switch (pdu->version) {
390 if ((uname = comm_string(community)) == NULL)
391 return (SNMP_CODE_FAILED);
392 smodel = SNMP_SECMODEL_SNMPv1;
396 if ((uname = comm_string(community)) == NULL)
397 return (SNMP_CODE_FAILED);
398 smodel = SNMP_SECMODEL_SNMPv2c;
402 uname = pdu->user.sec_name;
403 if ((smodel = pdu->security_model) != SNMP_SECMODEL_USM)
404 return (SNMP_CODE_FAILED);
405 /* Compare the PDU context engine id against the agent's */
406 if (pdu->context_engine_len != snmpd_engine.engine_len ||
407 memcmp(pdu->context_engine, snmpd_engine.engine_id,
408 snmpd_engine.engine_len) != 0)
409 return (SNMP_CODE_FAILED);
416 SLIST_FOREACH(vuser, &vacm_userlist, vvu)
417 if (strcmp(uname, vuser->secname) == 0 &&
418 vuser->sec_model == smodel)
421 if (vuser == NULL || vuser->group == NULL)
422 return (SNMP_CODE_FAILED);
424 /* XXX: shteryana - recheck */
425 TAILQ_FOREACH_REVERSE(acl, &vacm_accesslist, vacm_accesslist, vva) {
426 if (acl->group != vuser->group)
428 SLIST_FOREACH(vacmctx, &vacm_contextlist, vcl)
429 if (memcmp(vacmctx->ctxname, acl->ctx_prefix,
430 acl->ctx_match) == 0)
434 return (SNMP_CODE_FAILED);
440 case SNMP_PDU_GETNEXT:
441 case SNMP_PDU_GETBULK:
442 if ((view = acl->read_view) == NULL)
443 return (SNMP_CODE_FAILED);
447 if ((view = acl->write_view) == NULL)
448 return (SNMP_CODE_FAILED);
452 case SNMP_PDU_INFORM:
454 case SNMP_PDU_REPORT:
455 if ((view = acl->notify_view) == NULL)
456 return (SNMP_CODE_FAILED);
458 case SNMP_PDU_RESPONSE:
460 return (SNMP_CODE_FAILED);
465 for (i = 0; i < pdu->nbindings; i++) {
466 /* XXX - view->mask*/
467 suboid = asn_is_suboid(&view->subtree, &pdu->bindings[i].var);
468 if ((!suboid && !view->exclude) || (suboid && view->exclude)) {
470 return (SNMP_CODE_FAILED);
474 return (SNMP_CODE_OK);
478 * SNMP input. Start: decode the PDU, find the user or community.
481 snmp_input_start(const u_char *buf, size_t len, const char *source,
482 struct snmp_pdu *pdu, int32_t *ip, size_t *pdulen)
486 enum snmpd_input_err ret;
490 this_tick = get_ticks();
495 ret = SNMPD_INPUT_OK;
497 /* look whether we have enough bytes for the entire PDU. */
498 switch (sret = snmp_pdu_snoop(&b)) {
501 return (SNMPD_INPUT_TRUNC);
504 snmpd_stats.inASNParseErrs++;
505 return (SNMPD_INPUT_FAILED);
507 b.asn_len = *pdulen = (size_t)sret;
509 memset(pdu, 0, sizeof(*pdu));
510 if ((code = snmp_pdu_decode_header(&b, pdu)) != SNMP_CODE_OK)
513 if (pdu->version == SNMP_V3) {
514 if (pdu->security_model != SNMP_SECMODEL_USM) {
515 code = SNMP_CODE_FAILED;
518 if ((code = snmp_pdu_auth_user(pdu)) != SNMP_CODE_OK)
520 if ((code = snmp_pdu_decode_secmode(&b, pdu)) != SNMP_CODE_OK)
523 code = snmp_pdu_decode_scoped(&b, pdu, ip);
526 snmpd_stats.inPkts++;
530 case SNMP_CODE_FAILED:
531 snmpd_stats.inASNParseErrs++;
532 return (SNMPD_INPUT_FAILED);
534 case SNMP_CODE_BADVERS:
536 snmpd_stats.inBadVersions++;
537 return (SNMPD_INPUT_FAILED);
539 case SNMP_CODE_BADLEN:
540 if (pdu->type == SNMP_OP_SET)
541 ret = SNMPD_INPUT_VALBADLEN;
544 case SNMP_CODE_OORANGE:
545 if (pdu->type == SNMP_OP_SET)
546 ret = SNMPD_INPUT_VALRANGE;
549 case SNMP_CODE_BADENC:
550 if (pdu->type == SNMP_OP_SET)
551 ret = SNMPD_INPUT_VALBADENC;
554 case SNMP_CODE_BADSECLEVEL:
555 snmpd_usmstats.unsupported_seclevels++;
556 return (SNMPD_INPUT_FAILED);
558 case SNMP_CODE_NOTINTIME:
559 snmpd_usmstats.not_in_time_windows++;
560 return (SNMPD_INPUT_FAILED);
562 case SNMP_CODE_BADUSER:
563 snmpd_usmstats.unknown_users++;
564 return (SNMPD_INPUT_FAILED);
566 case SNMP_CODE_BADENGINE:
567 snmpd_usmstats.unknown_engine_ids++;
568 return (SNMPD_INPUT_FAILED);
570 case SNMP_CODE_BADDIGEST:
571 snmpd_usmstats.wrong_digests++;
572 return (SNMPD_INPUT_FAILED);
574 case SNMP_CODE_EDECRYPT:
575 snmpd_usmstats.decrypt_errors++;
576 return (SNMPD_INPUT_FAILED);
579 switch (pdu->version) {
582 if (!(snmpd.version_enable & VERS_ENABLE_V1))
587 if (!(snmpd.version_enable & VERS_ENABLE_V2C))
592 if (!(snmpd.version_enable & VERS_ENABLE_V3))
602 if (debug.dump_pdus) {
603 snmp_printf("%s -> ", source);
608 * Look, whether we know the community or user
611 if (pdu->version != SNMP_V3) {
612 TAILQ_FOREACH(comm, &community_list, link)
613 if (comm->string != NULL &&
614 strcmp(comm->string, pdu->community) == 0)
618 snmpd_stats.inBadCommunityNames++;
620 if (snmpd.auth_traps)
621 snmp_send_trap(&oid_authenticationFailure,
622 (struct snmp_value *)NULL);
623 ret = SNMPD_INPUT_BAD_COMM;
625 community = comm->value;
626 } else if (pdu->nbindings == 0) {
627 /* RFC 3414 - snmpEngineID Discovery */
628 if (strlen(pdu->user.sec_name) == 0) {
629 asn_append_oid(&(pdu->bindings[pdu->nbindings++].var),
630 &oid_usmUnknownEngineIDs);
631 pdu->context_engine_len = snmpd_engine.engine_len;
632 memcpy(pdu->context_engine, snmpd_engine.engine_id,
633 snmpd_engine.engine_len);
634 } else if (pdu->engine.engine_boots == 0 &&
635 pdu->engine.engine_time == 0) {
636 asn_append_oid(&(pdu->bindings[pdu->nbindings++].var),
637 &oid_usmNotInTimeWindows);
638 update_snmpd_engine_time();
639 pdu->engine.engine_boots = snmpd_engine.engine_boots;
640 pdu->engine.engine_time = snmpd_engine.engine_time;
642 } else if (usm_user->suser.auth_proto != SNMP_AUTH_NOAUTH &&
643 (pdu->engine.engine_boots == 0 || pdu->engine.engine_time == 0)) {
644 snmpd_usmstats.not_in_time_windows++;
645 ret = SNMPD_INPUT_FAILED;
648 if ((code = snmp_pdu_auth_access(pdu, ip)) != SNMP_CODE_OK)
649 ret = SNMPD_INPUT_FAILED;
655 * Will return only _OK or _FAILED
658 snmp_input_finish(struct snmp_pdu *pdu, const u_char *rcvbuf, size_t rcvlen,
659 u_char *sndbuf, size_t *sndlen, const char *source,
660 enum snmpd_input_err ierr, int32_t ivar, void *data)
662 struct snmp_pdu resp;
663 struct asn_buf resp_b, pdu_b;
666 resp_b.asn_ptr = sndbuf;
667 resp_b.asn_len = snmpd.txbuf;
669 pdu_b.asn_cptr = rcvbuf;
670 pdu_b.asn_len = rcvlen;
672 if (ierr != SNMPD_INPUT_OK) {
673 /* error decoding the input of a SET */
674 if (pdu->version == SNMP_V1)
675 pdu->error_status = SNMP_ERR_BADVALUE;
676 else if (ierr == SNMPD_INPUT_VALBADLEN)
677 pdu->error_status = SNMP_ERR_WRONG_LENGTH;
678 else if (ierr == SNMPD_INPUT_VALRANGE)
679 pdu->error_status = SNMP_ERR_WRONG_VALUE;
681 pdu->error_status = SNMP_ERR_WRONG_ENCODING;
683 pdu->error_index = ivar;
685 if (snmp_make_errresp(pdu, &pdu_b, &resp_b) == SNMP_RET_IGN) {
686 syslog(LOG_WARNING, "could not encode error response");
687 snmpd_stats.silentDrops++;
688 return (SNMPD_INPUT_FAILED);
691 if (debug.dump_pdus) {
692 snmp_printf("%s <- ", source);
695 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
696 return (SNMPD_INPUT_OK);
702 ret = snmp_get(pdu, &resp_b, &resp, data);
705 case SNMP_PDU_GETNEXT:
706 ret = snmp_getnext(pdu, &resp_b, &resp, data);
710 ret = snmp_set(pdu, &resp_b, &resp, data);
713 case SNMP_PDU_GETBULK:
714 ret = snmp_getbulk(pdu, &resp_b, &resp, data);
725 /* normal return - send a response */
726 if (debug.dump_pdus) {
727 snmp_printf("%s <- ", source);
728 snmp_pdu_dump(&resp);
730 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
731 snmp_pdu_free(&resp);
732 return (SNMPD_INPUT_OK);
735 /* error - send nothing */
736 snmpd_stats.silentDrops++;
737 return (SNMPD_INPUT_FAILED);
740 /* error - send error response. The snmp routine has
741 * changed the error fields in the original message. */
742 resp_b.asn_ptr = sndbuf;
743 resp_b.asn_len = snmpd.txbuf;
744 if (snmp_make_errresp(pdu, &pdu_b, &resp_b) == SNMP_RET_IGN) {
745 syslog(LOG_WARNING, "could not encode error response");
746 snmpd_stats.silentDrops++;
747 return (SNMPD_INPUT_FAILED);
749 if (debug.dump_pdus) {
750 snmp_printf("%s <- ", source);
753 *sndlen = (size_t)(resp_b.asn_ptr - sndbuf);
754 return (SNMPD_INPUT_OK);
761 * Insert a port into the right place in the transport's table of ports
764 trans_insert_port(struct transport *t, struct tport *port)
768 TAILQ_FOREACH(p, &t->table, link) {
769 if (asn_compare_oid(&p->index, &port->index) > 0) {
770 TAILQ_INSERT_BEFORE(p, port, link);
775 TAILQ_INSERT_TAIL(&t->table, port, link);
779 * Remove a port from a transport's list
782 trans_remove_port(struct tport *port)
785 TAILQ_REMOVE(&port->transport->table, port, link);
789 * Find a port on a transport's list
792 trans_find_port(struct transport *t, const struct asn_oid *idx, u_int sub)
795 return (FIND_OBJECT_OID(&t->table, idx, sub));
799 * Find next port on a transport's list
802 trans_next_port(struct transport *t, const struct asn_oid *idx, u_int sub)
805 return (NEXT_OBJECT_OID(&t->table, idx, sub));
812 trans_first_port(struct transport *t)
815 return (TAILQ_FIRST(&t->table));
819 * Iterate through all ports until a function returns a 0.
822 trans_iter_port(struct transport *t, int (*func)(struct tport *, intptr_t),
827 TAILQ_FOREACH(p, &t->table, link)
828 if (func(p, arg) == 0)
834 * Register a transport
837 trans_register(const struct transport_def *def, struct transport **pp)
842 if ((*pp = malloc(sizeof(**pp))) == NULL)
843 return (SNMP_ERR_GENERR);
845 /* construct index */
846 (*pp)->index.len = strlen(def->name) + 1;
847 (*pp)->index.subs[0] = strlen(def->name);
848 for (i = 0; i < (*pp)->index.subs[0]; i++)
849 (*pp)->index.subs[i + 1] = def->name[i];
853 if (FIND_OBJECT_OID(&transport_list, &(*pp)->index, 0) != NULL) {
855 return (SNMP_ERR_INCONS_VALUE);
858 /* register module */
859 snprintf(or_descr, sizeof(or_descr), "%s transport mapping", def->name);
860 if (((*pp)->or_index = or_register(&def->id, or_descr, NULL)) == 0) {
862 return (SNMP_ERR_GENERR);
865 INSERT_OBJECT_OID((*pp), &transport_list);
867 TAILQ_INIT(&(*pp)->table);
869 return (SNMP_ERR_NOERROR);
873 * Unregister transport
876 trans_unregister(struct transport *t)
878 if (!TAILQ_EMPTY(&t->table))
879 return (SNMP_ERR_INCONS_VALUE);
881 or_unregister(t->or_index);
882 TAILQ_REMOVE(&transport_list, t, link);
884 return (SNMP_ERR_NOERROR);
888 * File descriptor support
890 #ifdef USE_LIBBEGEMOT
892 input(int fd, int mask __unused, void *uap)
895 input(evContext ctx __unused, void *uap, int fd, int mask __unused)
898 struct fdesc *f = uap;
900 (*f->func)(fd, f->udata);
908 #ifdef USE_LIBBEGEMOT
910 poll_unregister(f->id);
914 if (evTestID(f->id)) {
915 (void)evDeselectFD(evctx, f->id);
927 #ifdef USE_LIBBEGEMOT
930 if ((f->id = poll_register(f->fd, input, f, POLL_IN)) < 0) {
932 syslog(LOG_ERR, "select fd %d: %m", f->fd);
939 if (evSelectFD(evctx, f->fd, EV_READ, input, f, &f->id)) {
941 syslog(LOG_ERR, "select fd %d: %m", f->fd);
950 fd_select(int fd, void (*func)(int, void *), void *udata, struct lmodule *mod)
955 if ((f = malloc(sizeof(struct fdesc))) == NULL) {
957 syslog(LOG_ERR, "fd_select: %m");
965 #ifdef USE_LIBBEGEMOT
978 LIST_INSERT_HEAD(&fdesc_list, f, link);
988 LIST_REMOVE(f, link);
994 fd_flush(struct lmodule *mod)
996 struct fdesc *t, *t1;
998 t = LIST_FIRST(&fdesc_list);
1000 t1 = LIST_NEXT(t, link);
1001 if (t->owner == mod)
1008 * Consume a message from the input buffer
1011 snmp_input_consume(struct port_input *pi)
1014 /* always consume everything */
1018 if (pi->consumed >= pi->length) {
1019 /* all bytes consumed */
1023 memmove(pi->buf, pi->buf + pi->consumed, pi->length - pi->consumed);
1024 pi->length -= pi->consumed;
1028 check_priv_dgram(struct port_input *pi, struct sockcred *cred)
1031 /* process explicitly sends credentials */
1033 pi->priv = (cred->sc_euid == 0);
1039 check_priv_stream(struct port_input *pi)
1041 struct xucred ucred;
1044 /* obtain the accept time credentials */
1045 ucredlen = sizeof(ucred);
1047 if (getsockopt(pi->fd, 0, LOCAL_PEERCRED, &ucred, &ucredlen) == 0 &&
1048 ucredlen >= sizeof(ucred) && ucred.cr_version == XUCRED_VERSION)
1049 pi->priv = (ucred.cr_uid == 0);
1055 * Input from a stream socket.
1058 recv_stream(struct port_input *pi)
1061 struct iovec iov[1];
1064 if (pi->buf == NULL) {
1065 /* no buffer yet - allocate one */
1066 if ((pi->buf = buf_alloc(0)) == NULL) {
1067 /* ups - could not get buffer. Return an error
1068 * the caller must close the transport. */
1071 pi->buflen = buf_size(0);
1076 /* try to get a message */
1077 msg.msg_name = pi->peer;
1078 msg.msg_namelen = pi->peerlen;
1081 msg.msg_control = NULL;
1082 msg.msg_controllen = 0;
1085 iov[0].iov_base = pi->buf + pi->length;
1086 iov[0].iov_len = pi->buflen - pi->length;
1088 len = recvmsg(pi->fd, &msg, 0);
1090 if (len == -1 || len == 0)
1097 check_priv_stream(pi);
1103 * Input from a datagram socket.
1104 * Each receive should return one datagram.
1107 recv_dgram(struct port_input *pi, struct in_addr *laddr)
1110 char cbuf[CMSG_SPACE(SOCKCREDSIZE(CMGROUP_MAX)) +
1111 CMSG_SPACE(sizeof(struct in_addr))];
1113 struct iovec iov[1];
1115 struct cmsghdr *cmsg;
1116 struct sockcred *cred = NULL;
1118 if (pi->buf == NULL) {
1119 /* no buffer yet - allocate one */
1120 if ((pi->buf = buf_alloc(0)) == NULL) {
1121 /* ups - could not get buffer. Read away input
1123 (void)recvfrom(pi->fd, embuf, sizeof(embuf),
1128 pi->buflen = buf_size(0);
1131 /* try to get a message */
1132 msg.msg_name = pi->peer;
1133 msg.msg_namelen = pi->peerlen;
1136 memset(cbuf, 0, sizeof(cbuf));
1137 msg.msg_control = cbuf;
1138 msg.msg_controllen = sizeof(cbuf);
1141 iov[0].iov_base = pi->buf;
1142 iov[0].iov_len = pi->buflen;
1144 len = recvmsg(pi->fd, &msg, 0);
1146 if (len == -1 || len == 0)
1150 if (msg.msg_flags & MSG_TRUNC) {
1151 /* truncated - drop */
1152 snmpd_stats.silentDrops++;
1153 snmpd_stats.inTooLong++;
1157 pi->length = (size_t)len;
1159 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL;
1160 cmsg = CMSG_NXTHDR(&msg, cmsg)) {
1161 if (cmsg->cmsg_level == IPPROTO_IP &&
1162 cmsg->cmsg_type == IP_RECVDSTADDR)
1163 memcpy(laddr, CMSG_DATA(cmsg), sizeof(struct in_addr));
1164 if (cmsg->cmsg_level == SOL_SOCKET &&
1165 cmsg->cmsg_type == SCM_CREDS)
1166 cred = (struct sockcred *)CMSG_DATA(cmsg);
1170 check_priv_dgram(pi, cred);
1176 * Input from a socket
1179 snmpd_input(struct port_input *pi, struct tport *tport)
1183 struct snmp_pdu pdu;
1184 enum snmpd_input_err ierr, ferr;
1185 enum snmpd_proxy_err perr;
1189 #ifdef USE_TCPWRAPPERS
1193 struct iovec iov[1];
1194 char cbuf[CMSG_SPACE(sizeof(struct in_addr))];
1195 struct cmsghdr *cmsgp;
1197 /* get input depending on the transport */
1199 msg.msg_control = NULL;
1200 msg.msg_controllen = 0;
1202 ret = recv_stream(pi);
1204 struct in_addr *laddr;
1206 memset(cbuf, 0, CMSG_SPACE(sizeof(struct in_addr)));
1207 msg.msg_control = cbuf;
1208 msg.msg_controllen = CMSG_SPACE(sizeof(struct in_addr));
1209 cmsgp = CMSG_FIRSTHDR(&msg);
1210 cmsgp->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
1211 cmsgp->cmsg_level = IPPROTO_IP;
1212 cmsgp->cmsg_type = IP_SENDSRCADDR;
1213 laddr = (struct in_addr *)CMSG_DATA(cmsgp);
1215 ret = recv_dgram(pi, laddr);
1217 if (laddr->s_addr == 0) {
1218 msg.msg_control = NULL;
1219 msg.msg_controllen = 0;
1226 #ifdef USE_TCPWRAPPERS
1228 * In case of AF_INET{6} peer, do hosts_access(5) check.
1230 if (pi->peer->sa_family != AF_LOCAL &&
1231 inet_ntop(pi->peer->sa_family,
1232 &((const struct sockaddr_in *)(const void *)pi->peer)->sin_addr,
1233 client, sizeof(client)) != NULL) {
1234 request_set(&req, RQ_CLIENT_ADDR, client, 0);
1235 if (hosts_access(&req) == 0) {
1236 syslog(LOG_ERR, "refused connection from %.500s",
1240 } else if (pi->peer->sa_family != AF_LOCAL)
1241 syslog(LOG_ERR, "inet_ntop(): %m");
1247 ierr = snmp_input_start(pi->buf, pi->length, "SNMP", &pdu, &vi,
1249 if (ierr == SNMPD_INPUT_TRUNC) {
1250 /* need more bytes. This is ok only for streaming transports.
1251 * but only if we have not reached bufsiz yet. */
1253 if (pi->length == buf_size(0)) {
1254 snmpd_stats.silentDrops++;
1259 snmpd_stats.silentDrops++;
1263 /* can't check for bad SET pdus here, because a proxy may have to
1264 * check the access first. We don't want to return an error response
1265 * to a proxy PDU with a wrong community */
1266 if (ierr == SNMPD_INPUT_FAILED) {
1267 /* for streaming transports this is fatal */
1270 snmp_input_consume(pi);
1273 if (ierr == SNMPD_INPUT_BAD_COMM) {
1274 snmp_input_consume(pi);
1279 * If that is a module community and the module has a proxy function,
1280 * the hand it over to the module.
1282 if (comm != NULL && comm->owner != NULL &&
1283 comm->owner->config->proxy != NULL) {
1284 perr = (*comm->owner->config->proxy)(&pdu, tport->transport,
1285 &tport->index, pi->peer, pi->peerlen, ierr, vi,
1286 !pi->cred || pi->priv);
1290 case SNMPD_PROXY_OK:
1291 snmp_input_consume(pi);
1294 case SNMPD_PROXY_REJ:
1297 case SNMPD_PROXY_DROP:
1298 snmp_input_consume(pi);
1299 snmp_pdu_free(&pdu);
1300 snmpd_stats.proxyDrops++;
1303 case SNMPD_PROXY_BADCOMM:
1304 snmp_input_consume(pi);
1305 snmp_pdu_free(&pdu);
1306 snmpd_stats.inBadCommunityNames++;
1307 if (snmpd.auth_traps)
1308 snmp_send_trap(&oid_authenticationFailure,
1309 (struct snmp_value *)NULL);
1312 case SNMPD_PROXY_BADCOMMUSE:
1313 snmp_input_consume(pi);
1314 snmp_pdu_free(&pdu);
1315 snmpd_stats.inBadCommunityUses++;
1316 if (snmpd.auth_traps)
1317 snmp_send_trap(&oid_authenticationFailure,
1318 (struct snmp_value *)NULL);
1326 if (pdu.type == SNMP_PDU_RESPONSE ||
1327 pdu.type == SNMP_PDU_TRAP ||
1328 pdu.type == SNMP_PDU_TRAP2) {
1329 snmpd_stats.silentDrops++;
1330 snmpd_stats.inBadPduTypes++;
1331 snmp_pdu_free(&pdu);
1332 snmp_input_consume(pi);
1339 if (pdu.version < SNMP_V3 &&
1340 ((pi->cred && !pi->priv && pdu.type == SNMP_PDU_SET) ||
1341 (community != COMM_WRITE &&
1342 (pdu.type == SNMP_PDU_SET || community != COMM_READ)))) {
1343 snmpd_stats.inBadCommunityUses++;
1344 snmp_pdu_free(&pdu);
1345 snmp_input_consume(pi);
1346 if (snmpd.auth_traps)
1347 snmp_send_trap(&oid_authenticationFailure,
1348 (struct snmp_value *)NULL);
1355 if ((sndbuf = buf_alloc(1)) == NULL) {
1356 snmpd_stats.silentDrops++;
1357 snmp_pdu_free(&pdu);
1358 snmp_input_consume(pi);
1361 ferr = snmp_input_finish(&pdu, pi->buf, pi->length,
1362 sndbuf, &sndlen, "SNMP", ierr, vi, NULL);
1364 if (ferr == SNMPD_INPUT_OK) {
1365 msg.msg_name = pi->peer;
1366 msg.msg_namelen = pi->peerlen;
1370 iov[0].iov_base = sndbuf;
1371 iov[0].iov_len = sndlen;
1373 slen = sendmsg(pi->fd, &msg, 0);
1375 syslog(LOG_ERR, "sendmsg: %m");
1376 else if ((size_t)slen != sndlen)
1377 syslog(LOG_ERR, "sendmsg: short write %zu/%zu",
1378 sndlen, (size_t)slen);
1380 snmp_pdu_free(&pdu);
1382 snmp_input_consume(pi);
1388 * Send a PDU to a given port
1391 snmp_send_port(void *targ, const struct asn_oid *port, struct snmp_pdu *pdu,
1392 const struct sockaddr *addr, socklen_t addrlen)
1394 struct transport *trans = targ;
1400 TAILQ_FOREACH(tp, &trans->table, link)
1401 if (asn_compare_oid(port, &tp->index) == 0)
1406 if ((sndbuf = buf_alloc(1)) == NULL)
1409 snmp_output(pdu, sndbuf, &sndlen, "SNMP PROXY");
1411 len = trans->vtab->send(tp, sndbuf, sndlen, addr, addrlen);
1414 syslog(LOG_ERR, "sendto: %m");
1415 else if ((size_t)len != sndlen)
1416 syslog(LOG_ERR, "sendto: short write %zu/%zu",
1417 sndlen, (size_t)len);
1424 * Close an input source
1427 snmpd_input_close(struct port_input *pi)
1430 fd_deselect(pi->id);
1432 (void)close(pi->fd);
1433 if (pi->buf != NULL)
1438 * Dump internal state.
1440 #ifdef USE_LIBBEGEMOT
1445 info_func(evContext ctx __unused, void *uap __unused, const void *tag __unused)
1452 syslog(LOG_DEBUG, "Dump of SNMPd %lu\n", (u_long)getpid());
1453 for (i = 0; i < tree_size; i++) {
1454 switch (tree[i].type) {
1456 case SNMP_NODE_LEAF:
1457 sprintf(buf, "LEAF: %s %s", tree[i].name,
1458 asn_oid2str(&tree[i].oid));
1461 case SNMP_NODE_COLUMN:
1462 sprintf(buf, "COL: %s %s", tree[i].name,
1463 asn_oid2str(&tree[i].oid));
1466 syslog(LOG_DEBUG, "%s", buf);
1469 TAILQ_FOREACH(m, &lmodules, link)
1470 if (m->config->dump)
1471 (*m->config->dump)();
1475 * Re-read configuration
1477 #ifdef USE_LIBBEGEMOT
1482 config_func(evContext ctx __unused, void *uap __unused,
1483 const void *tag __unused)
1488 if (read_config(config_file, NULL)) {
1489 syslog(LOG_ERR, "error reading config file '%s'", config_file);
1492 TAILQ_FOREACH(m, &lmodules, link)
1493 if (m->config->config)
1494 (*m->config->config)();
1498 * On USR1 dump actual configuration.
1501 onusr1(int s __unused)
1504 work |= WORK_DOINFO;
1507 onhup(int s __unused)
1510 work |= WORK_RECONFIG;
1514 onterm(int s __unused)
1517 /* allow clean-up */
1524 struct sigaction sa;
1526 sa.sa_handler = onusr1;
1527 sa.sa_flags = SA_RESTART;
1528 sigemptyset(&sa.sa_mask);
1529 if (sigaction(SIGUSR1, &sa, NULL)) {
1530 syslog(LOG_ERR, "sigaction: %m");
1534 sa.sa_handler = onhup;
1535 if (sigaction(SIGHUP, &sa, NULL)) {
1536 syslog(LOG_ERR, "sigaction: %m");
1540 sa.sa_handler = onterm;
1542 sigemptyset(&sa.sa_mask);
1543 if (sigaction(SIGTERM, &sa, NULL)) {
1544 syslog(LOG_ERR, "sigaction: %m");
1547 if (sigaction(SIGINT, &sa, NULL)) {
1548 syslog(LOG_ERR, "sigaction: %m");
1559 if (sigprocmask(SIG_BLOCK, &set, &blocked_sigs) == -1) {
1560 syslog(LOG_ERR, "SIG_BLOCK: %m");
1567 if (sigprocmask(SIG_SETMASK, &blocked_sigs, NULL) == -1) {
1568 syslog(LOG_ERR, "SIG_SETMASK: %m");
1579 (void)unlink(pid_file);
1585 struct transport *t;
1587 TAILQ_FOREACH(t, &transport_list, link)
1588 (void)t->vtab->stop(1);
1592 * Define a macro from the command line
1600 if ((eq = strchr(arg, '=')) == NULL)
1601 err = define_macro(arg, "");
1604 err = define_macro(arg, eq);
1607 syslog(LOG_ERR, "cannot save macro: %m");
1613 * Re-implement getsubopt from scratch, because the second argument is broken
1614 * and will not compile with WARNS=5.
1617 getsubopt1(char **arg, const char *const *options, char **valp, char **optp)
1619 static const char *const delim = ",\t ";
1625 /* skip leading junk */
1626 for (ptr = *arg; *ptr != '\0'; ptr++)
1627 if (strchr(delim, *ptr) == NULL)
1635 /* find the end of the option */
1636 while (*++ptr != '\0')
1637 if (strchr(delim, *ptr) != NULL || *ptr == '=')
1644 while (*ptr != '\0' && strchr(delim, *ptr) == NULL)
1654 for (i = 0; *options != NULL; options++, i++)
1655 if (strcmp(*optp, *options) == 0)
1661 main(int argc, char *argv[])
1667 const char *prefix = "snmpd";
1669 char *value = NULL, *option; /* XXX */
1670 struct transport *t;
1673 #define DBG_EVENTS 1
1675 static const char *const debug_opts[] = {
1682 snmp_printf = snmp_printf_func;
1683 snmp_error = snmp_error_func;
1684 snmp_debug = snmp_debug_func;
1685 asn_error = asn_error_func;
1687 while ((opt = getopt(argc, argv, "c:dD:e:hI:l:m:p:")) != EOF)
1691 strlcpy(config_file, optarg, sizeof(config_file));
1700 switch (getsubopt1(&optarg, debug_opts,
1704 debug.dump_pdus = 1;
1714 "no value for 'trace'");
1716 snmp_trace = strtoul(value,
1723 "unknown debug flag '%s'",
1727 "missing debug flag");
1734 strlcpy(engine_file, optarg, sizeof(engine_file));
1737 fprintf(stderr, "%s", usgtxt);
1753 strlcpy(pid_file, optarg, sizeof(pid_file));
1757 openlog(prefix, LOG_PID | (background ? 0 : LOG_PERROR), LOG_USER);
1758 setlogmask(LOG_UPTO(debug.logpri - 1));
1760 if (background && daemon(0, 0) < 0) {
1761 syslog(LOG_ERR, "daemon: %m");
1773 snmp_serial_no = random();
1775 #ifdef USE_TCPWRAPPERS
1777 * Initialize hosts_access(3) handler.
1779 request_init(&req, RQ_DAEMON, "snmpd", 0);
1784 * Initialize the tree.
1786 if ((tree = malloc(sizeof(struct snmp_node) * CTREE_SIZE)) == NULL) {
1787 syslog(LOG_ERR, "%m");
1790 memcpy(tree, ctree, sizeof(struct snmp_node) * CTREE_SIZE);
1791 tree_size = CTREE_SIZE;
1794 * Get standard communities
1796 (void)comm_define(1, "SNMP read", NULL, NULL);
1797 (void)comm_define(2, "SNMP write", NULL, NULL);
1798 community = COMM_INITIALIZE;
1800 trap_reqid = reqid_allocate(512, NULL);
1802 if (config_file[0] == '\0')
1803 snprintf(config_file, sizeof(config_file), PATH_CONFIG, prefix);
1806 init_snmpd_engine();
1808 this_tick = get_ticks();
1809 start_tick = this_tick;
1811 /* start transports */
1812 if (atexit(trans_stop) == -1) {
1813 syslog(LOG_ERR, "atexit failed: %m");
1816 if (udp_trans.start() != SNMP_ERR_NOERROR)
1817 syslog(LOG_WARNING, "cannot start UDP transport");
1818 if (lsock_trans.start() != SNMP_ERR_NOERROR)
1819 syslog(LOG_WARNING, "cannot start LSOCK transport");
1821 #ifdef USE_LIBBEGEMOT
1822 if (debug.evdebug > 0)
1825 if (evCreate(&evctx)) {
1826 syslog(LOG_ERR, "evCreate: %m");
1829 if (debug.evdebug > 0)
1830 evSetDebug(evctx, 10, stderr);
1833 if (engine_file[0] == '\0')
1834 snprintf(engine_file, sizeof(engine_file), PATH_ENGINE, prefix);
1836 if (read_config(config_file, NULL)) {
1837 syslog(LOG_ERR, "error in config file");
1841 TAILQ_FOREACH(t, &transport_list, link)
1842 TAILQ_FOREACH(p, &t->table, link)
1843 t->vtab->init_port(p);
1847 if (pid_file[0] == '\0')
1848 snprintf(pid_file, sizeof(pid_file), PATH_PID, prefix);
1850 if ((fp = fopen(pid_file, "w")) != NULL) {
1851 fprintf(fp, "%u", getpid());
1853 if (atexit(term) == -1) {
1854 syslog(LOG_ERR, "atexit failed: %m");
1855 (void)remove(pid_file);
1860 if (or_register(&oid_snmpMIB, "The MIB module for SNMPv2 entities.",
1862 syslog(LOG_ERR, "cannot register SNMPv2 MIB");
1865 if (or_register(&oid_begemotSnmpd, "The MIB module for the Begemot SNMPd.",
1867 syslog(LOG_ERR, "cannot register begemotSnmpd MIB");
1871 while ((m = TAILQ_FIRST(&modules_start)) != NULL) {
1872 m->flags &= ~LM_ONSTARTLIST;
1873 TAILQ_REMOVE(&modules_start, m, start);
1877 snmp_send_trap(&oid_coldStart, (struct snmp_value *)NULL);
1880 #ifndef USE_LIBBEGEMOT
1883 struct lmodule *mod;
1885 TAILQ_FOREACH(mod, &lmodules, link)
1886 if (mod->config->idle != NULL)
1887 (*mod->config->idle)();
1889 #ifndef USE_LIBBEGEMOT
1890 if (evGetNext(evctx, &event, EV_WAIT) == 0) {
1891 if (evDispatch(evctx, event))
1892 syslog(LOG_ERR, "evDispatch: %m");
1893 } else if (errno != EINTR) {
1894 syslog(LOG_ERR, "evGetNext: %m");
1903 if (work & WORK_DOINFO) {
1904 #ifdef USE_LIBBEGEMOT
1907 if (evWaitFor(evctx, &work, info_func,
1908 NULL, NULL) == -1) {
1909 syslog(LOG_ERR, "evWaitFor: %m");
1914 if (work & WORK_RECONFIG) {
1915 #ifdef USE_LIBBEGEMOT
1918 if (evWaitFor(evctx, &work, config_func,
1919 NULL, NULL) == -1) {
1920 syslog(LOG_ERR, "evWaitFor: %m");
1927 #ifndef USE_LIBBEGEMOT
1928 if (evDo(evctx, &work) == -1) {
1929 syslog(LOG_ERR, "evDo: %m");
1945 if (gettimeofday(&tv, NULL))
1947 ret = tv.tv_sec * 100ULL + tv.tv_usec / 10000ULL;
1956 * Trampoline for the non-repeatable timers.
1958 #ifdef USE_LIBBEGEMOT
1960 tfunc(int tid __unused, void *uap)
1963 tfunc(evContext ctx __unused, void *uap, struct timespec due __unused,
1964 struct timespec inter __unused)
1967 struct timer *tp = uap;
1969 LIST_REMOVE(tp, link);
1970 tp->func(tp->udata);
1975 * Trampoline for the repeatable timers.
1977 #ifdef USE_LIBBEGEMOT
1979 trfunc(int tid __unused, void *uap)
1982 trfunc(evContext ctx __unused, void *uap, struct timespec due __unused,
1983 struct timespec inter __unused)
1986 struct timer *tp = uap;
1988 tp->func(tp->udata);
1992 * Start a one-shot timer
1995 timer_start(u_int ticks, void (*func)(void *), void *udata, struct lmodule *mod)
1998 #ifndef USE_LIBBEGEMOT
1999 struct timespec due;
2002 if ((tp = malloc(sizeof(struct timer))) == NULL) {
2003 syslog(LOG_CRIT, "out of memory for timer");
2007 #ifndef USE_LIBBEGEMOT
2008 due = evAddTime(evNowTime(),
2009 evConsTime(ticks / 100, (ticks % 100) * 10000));
2016 LIST_INSERT_HEAD(&timer_list, tp, link);
2018 #ifdef USE_LIBBEGEMOT
2019 if ((tp->id = poll_start_timer(ticks * 10, 0, tfunc, tp)) < 0) {
2020 syslog(LOG_ERR, "cannot set timer: %m");
2024 if (evSetTimer(evctx, tfunc, tp, due, evConsTime(0, 0), &tp->id)
2026 syslog(LOG_ERR, "cannot set timer: %m");
2034 * Start a repeatable timer. When used with USE_LIBBEGEMOT the first argument
2035 * is currently ignored and the initial number of ticks is set to the
2036 * repeat number of ticks.
2039 timer_start_repeat(u_int ticks __unused, u_int repeat_ticks,
2040 void (*func)(void *), void *udata, struct lmodule *mod)
2043 #ifndef USE_LIBBEGEMOT
2044 struct timespec due;
2045 struct timespec inter;
2048 if ((tp = malloc(sizeof(struct timer))) == NULL) {
2049 syslog(LOG_CRIT, "out of memory for timer");
2053 #ifndef USE_LIBBEGEMOT
2054 due = evAddTime(evNowTime(),
2055 evConsTime(ticks / 100, (ticks % 100) * 10000));
2056 inter = evConsTime(repeat_ticks / 100, (repeat_ticks % 100) * 10000);
2063 LIST_INSERT_HEAD(&timer_list, tp, link);
2065 #ifdef USE_LIBBEGEMOT
2066 if ((tp->id = poll_start_timer(repeat_ticks * 10, 1, trfunc, tp)) < 0) {
2067 syslog(LOG_ERR, "cannot set timer: %m");
2071 if (evSetTimer(evctx, trfunc, tp, due, inter, &tp->id) == -1) {
2072 syslog(LOG_ERR, "cannot set timer: %m");
2085 struct timer *tp = p;
2087 LIST_REMOVE(tp, link);
2088 #ifdef USE_LIBBEGEMOT
2089 poll_stop_timer(tp->id);
2091 if (evClearTimer(evctx, tp->id) == -1) {
2092 syslog(LOG_ERR, "cannot stop timer: %m");
2100 timer_flush(struct lmodule *mod)
2102 struct timer *t, *t1;
2104 t = LIST_FIRST(&timer_list);
2106 t1 = LIST_NEXT(t, link);
2107 if (t->owner == mod)
2114 snmp_printf_func(const char *fmt, ...)
2117 static char *pend = NULL;
2121 vasprintf(&ret, fmt, ap);
2127 if ((new = realloc(pend, strlen(pend) + strlen(ret) + 1))
2138 while ((ret = strchr(pend, '\n')) != NULL) {
2140 syslog(LOG_DEBUG, "%s", pend);
2141 if (strlen(ret + 1) == 0) {
2146 strcpy(pend, ret + 1);
2151 snmp_error_func(const char *err, ...)
2156 if (!(snmp_trace & LOG_SNMP_ERRORS))
2160 snprintf(errbuf, sizeof(errbuf), "SNMP: ");
2161 vsnprintf(errbuf + strlen(errbuf),
2162 sizeof(errbuf) - strlen(errbuf), err, ap);
2165 syslog(LOG_ERR, "%s", errbuf);
2169 snmp_debug_func(const char *err, ...)
2175 snprintf(errbuf, sizeof(errbuf), "SNMP: ");
2176 vsnprintf(errbuf+strlen(errbuf), sizeof(errbuf)-strlen(errbuf),
2180 syslog(LOG_DEBUG, "%s", errbuf);
2184 asn_error_func(const struct asn_buf *b, const char *err, ...)
2190 if (!(snmp_trace & LOG_ASN1_ERRORS))
2194 snprintf(errbuf, sizeof(errbuf), "ASN.1: ");
2195 vsnprintf(errbuf + strlen(errbuf),
2196 sizeof(errbuf) - strlen(errbuf), err, ap);
2200 snprintf(errbuf + strlen(errbuf),
2201 sizeof(errbuf) - strlen(errbuf), " at");
2202 for (i = 0; b->asn_len > i; i++)
2203 snprintf(errbuf + strlen(errbuf),
2204 sizeof(errbuf) - strlen(errbuf),
2205 " %02x", b->asn_cptr[i]);
2208 syslog(LOG_ERR, "%s", errbuf);
2212 * Create a new community
2215 comm_define(u_int priv, const char *descr, struct lmodule *owner,
2218 struct community *c, *p;
2221 /* generate an identifier */
2223 if ((ncomm = next_community_index++) == UINT_MAX)
2224 next_community_index = 1;
2225 TAILQ_FOREACH(c, &community_list, link)
2226 if (c->value == ncomm)
2228 } while (c != NULL);
2230 if ((c = malloc(sizeof(struct community))) == NULL) {
2231 syslog(LOG_ERR, "comm_define: %m");
2241 if((c->string = malloc(strlen(str)+1)) == NULL) {
2245 strcpy(c->string, str);
2249 if (c->owner == NULL) {
2251 c->index.subs[0] = 0;
2253 c->index = c->owner->index;
2255 c->index.subs[c->index.len++] = c->private;
2260 TAILQ_FOREACH(p, &community_list, link) {
2261 if (asn_compare_oid(&p->index, &c->index) > 0) {
2262 TAILQ_INSERT_BEFORE(p, c, link);
2267 TAILQ_INSERT_TAIL(&community_list, c, link);
2272 comm_string(u_int ncomm)
2274 struct community *p;
2276 TAILQ_FOREACH(p, &community_list, link)
2277 if (p->value == ncomm)
2283 * Delete all communities allocated by a module
2286 comm_flush(struct lmodule *mod)
2288 struct community *p, *p1;
2290 p = TAILQ_FIRST(&community_list);
2292 p1 = TAILQ_NEXT(p, link);
2293 if (p->owner == mod) {
2295 TAILQ_REMOVE(&community_list, p, link);
2303 * Request ID handling.
2305 * Allocate a new range of request ids. Use a first fit algorithm.
2308 reqid_allocate(int size, struct lmodule *mod)
2311 struct idrange *r, *r1;
2313 if (size <= 0 || size > INT32_MAX) {
2314 syslog(LOG_CRIT, "%s: size out of range: %d", __func__, size);
2317 /* allocate a type id */
2319 if ((type = next_idrange++) == UINT_MAX)
2321 TAILQ_FOREACH(r, &idrange_list, link)
2322 if (r->type == type)
2327 if (TAILQ_EMPTY(&idrange_list))
2330 r = TAILQ_FIRST(&idrange_list);
2331 if (r->base < size) {
2332 while((r1 = TAILQ_NEXT(r, link)) != NULL) {
2333 if (r1->base - (r->base + r->size) >= size)
2340 r1 = TAILQ_LAST(&idrange_list, idrange_list);
2341 if (INT32_MAX - size + 1 < r1->base + r1->size) {
2342 syslog(LOG_ERR, "out of id ranges (%u)", size);
2348 /* allocate structure */
2349 if ((r1 = malloc(sizeof(struct idrange))) == NULL) {
2350 syslog(LOG_ERR, "%s: %m", __FUNCTION__);
2357 if (TAILQ_EMPTY(&idrange_list) || r == TAILQ_FIRST(&idrange_list)) {
2359 TAILQ_INSERT_HEAD(&idrange_list, r1, link);
2360 } else if (r == NULL) {
2361 r = TAILQ_LAST(&idrange_list, idrange_list);
2362 r1->base = r->base + r->size;
2363 TAILQ_INSERT_TAIL(&idrange_list, r1, link);
2365 r = TAILQ_PREV(r, idrange_list, link);
2366 r1->base = r->base + r->size;
2367 TAILQ_INSERT_AFTER(&idrange_list, r, r1, link);
2369 r1->next = r1->base;
2375 reqid_next(u_int type)
2380 TAILQ_FOREACH(r, &idrange_list, link)
2381 if (r->type == type)
2384 syslog(LOG_CRIT, "wrong idrange type");
2387 if ((id = r->next++) == r->base + (r->size - 1))
2393 reqid_base(u_int type)
2397 TAILQ_FOREACH(r, &idrange_list, link)
2398 if (r->type == type)
2400 syslog(LOG_CRIT, "wrong idrange type");
2405 reqid_type(int32_t reqid)
2409 TAILQ_FOREACH(r, &idrange_list, link)
2410 if (reqid >= r->base && reqid <= r->base + (r->size - 1))
2416 reqid_istype(int32_t reqid, u_int type)
2418 return (reqid_type(reqid) == type);
2422 * Delete all communities allocated by a module
2425 reqid_flush(struct lmodule *mod)
2427 struct idrange *p, *p1;
2429 p = TAILQ_FIRST(&idrange_list);
2431 p1 = TAILQ_NEXT(p, link);
2432 if (p->owner == mod) {
2433 TAILQ_REMOVE(&idrange_list, p, link);
2441 * Merge the given tree for the given module into the main tree.
2444 compare_node(const void *v1, const void *v2)
2446 const struct snmp_node *n1 = v1;
2447 const struct snmp_node *n2 = v2;
2449 return (asn_compare_oid(&n1->oid, &n2->oid));
2452 tree_merge(const struct snmp_node *ntree, u_int nsize, struct lmodule *mod)
2454 struct snmp_node *xtree;
2457 xtree = realloc(tree, sizeof(*tree) * (tree_size + nsize));
2458 if (xtree == NULL) {
2459 syslog(LOG_ERR, "tree_merge: %m");
2463 memcpy(&tree[tree_size], ntree, sizeof(*tree) * nsize);
2465 for (i = 0; i < nsize; i++)
2466 tree[tree_size + i].tree_data = mod;
2470 qsort(tree, tree_size, sizeof(tree[0]), compare_node);
2476 * Remove all nodes belonging to the loadable module
2479 tree_unmerge(struct lmodule *mod)
2483 for(s = d = 0; s < tree_size; s++)
2484 if (tree[s].tree_data != mod) {
2496 lm_load(const char *path, const char *section)
2501 char *av[MAX_MOD_ARGS + 1];
2505 if ((m = malloc(sizeof(*m))) == NULL) {
2506 syslog(LOG_ERR, "lm_load: %m");
2511 strcpy(m->section, section);
2513 if ((m->path = malloc(strlen(path) + 1)) == NULL) {
2514 syslog(LOG_ERR, "lm_load: %m");
2517 strcpy(m->path, path);
2522 m->index.subs[0] = strlen(section);
2523 m->index.len = m->index.subs[0] + 1;
2524 for (u = 0; u < m->index.subs[0]; u++)
2525 m->index.subs[u + 1] = section[u];
2528 * Load the object file and locate the config structure
2530 if ((m->handle = dlopen(m->path, RTLD_NOW|RTLD_GLOBAL)) == NULL) {
2531 syslog(LOG_ERR, "lm_load: open %s", dlerror());
2535 if ((m->config = dlsym(m->handle, "config")) == NULL) {
2536 syslog(LOG_ERR, "lm_load: no 'config' symbol %s", dlerror());
2541 * Insert it into the right place
2543 INSERT_OBJECT_OID(m, &lmodules);
2545 /* preserve order */
2546 if (community == COMM_INITIALIZE) {
2547 m->flags |= LM_ONSTARTLIST;
2548 TAILQ_INSERT_TAIL(&modules_start, m, start);
2552 * make the argument vector.
2555 for (i = 0; i < nprogargs; i++) {
2556 if (strlen(progargs[i]) >= strlen(section) + 1 &&
2557 strncmp(progargs[i], section, strlen(section)) == 0 &&
2558 progargs[i][strlen(section)] == ':') {
2559 if (ac == MAX_MOD_ARGS) {
2560 syslog(LOG_WARNING, "too many arguments for "
2561 "module '%s", section);
2564 av[ac++] = &progargs[i][strlen(section)+1];
2570 * Run the initialization function
2572 if ((err = (*m->config->init)(m, ac, av)) != 0) {
2573 syslog(LOG_ERR, "lm_load: init failed: %d", err);
2574 TAILQ_REMOVE(&lmodules, m, link);
2581 if ((m->flags & LM_ONSTARTLIST) != 0)
2582 TAILQ_REMOVE(&modules_start, m, start);
2594 lm_start(struct lmodule *mod)
2596 const struct lmodule *m;
2599 * Merge tree. If this fails, unload the module.
2601 if (tree_merge(mod->config->tree, mod->config->tree_size, mod)) {
2607 * Read configuration
2609 if (read_config(config_file, mod)) {
2610 syslog(LOG_ERR, "error in config file");
2614 if (mod->config->start)
2615 (*mod->config->start)();
2617 mod->flags |= LM_STARTED;
2620 * Inform other modules
2622 TAILQ_FOREACH(m, &lmodules, link)
2623 if (m->config->loading)
2624 (*m->config->loading)(mod, 1);
2632 lm_unload(struct lmodule *m)
2635 const struct lmodule *mod;
2637 TAILQ_REMOVE(&lmodules, m, link);
2638 if (m->flags & LM_ONSTARTLIST)
2639 TAILQ_REMOVE(&modules_start, m, start);
2642 if ((m->flags & LM_STARTED) && m->config->fini &&
2643 (err = (*m->config->fini)()) != 0)
2644 syslog(LOG_WARNING, "lm_unload(%s): fini %d", m->section, err);
2655 * Inform other modules
2657 TAILQ_FOREACH(mod, &lmodules, link)
2658 if (mod->config->loading)
2659 (*mod->config->loading)(m, 0);
2665 * Register an object resource and return the index (or 0 on failures)
2668 or_register(const struct asn_oid *or, const char *descr, struct lmodule *mod)
2670 struct objres *objres, *or1;
2673 /* find a free index */
2675 for (objres = TAILQ_FIRST(&objres_list);
2677 objres = TAILQ_NEXT(objres, link)) {
2678 if ((or1 = TAILQ_NEXT(objres, link)) == NULL ||
2679 or1->index > objres->index + 1) {
2680 idx = objres->index + 1;
2685 if ((objres = malloc(sizeof(*objres))) == NULL)
2688 objres->index = idx;
2690 strlcpy(objres->descr, descr, sizeof(objres->descr));
2691 objres->uptime = (uint32_t)(get_ticks() - start_tick);
2692 objres->module = mod;
2694 INSERT_OBJECT_INT(objres, &objres_list);
2696 systemg.or_last_change = objres->uptime;
2702 or_unregister(u_int idx)
2704 struct objres *objres;
2706 TAILQ_FOREACH(objres, &objres_list, link)
2707 if (objres->index == idx) {
2708 TAILQ_REMOVE(&objres_list, objres, link);
2715 * RFC 3414 User-based Security Model support
2718 struct snmpd_usmstat *
2719 bsnmpd_get_usm_stats(void)
2721 return (&snmpd_usmstats);
2725 bsnmpd_reset_usm_stats(void)
2727 memset(&snmpd_usmstats, 0, sizeof(snmpd_usmstats));
2731 usm_first_user(void)
2733 return (SLIST_FIRST(&usm_userlist));
2737 usm_next_user(struct usm_user *uuser)
2742 return (SLIST_NEXT(uuser, up));
2746 usm_find_user(uint8_t *engine, uint32_t elen, char *uname)
2748 struct usm_user *uuser;
2750 SLIST_FOREACH(uuser, &usm_userlist, up)
2751 if (uuser->user_engine_len == elen &&
2752 memcmp(uuser->user_engine_id, engine, elen) == 0 &&
2753 strlen(uuser->suser.sec_name) == strlen(uname) &&
2754 strcmp(uuser->suser.sec_name, uname) == 0)
2761 usm_compare_user(struct usm_user *u1, struct usm_user *u2)
2765 if (u1->user_engine_len < u2->user_engine_len)
2767 if (u1->user_engine_len > u2->user_engine_len)
2770 for (i = 0; i < u1->user_engine_len; i++) {
2771 if (u1->user_engine_id[i] < u2->user_engine_id[i])
2773 if (u1->user_engine_id[i] > u2->user_engine_id[i])
2777 if (strlen(u1->suser.sec_name) < strlen(u2->suser.sec_name))
2779 if (strlen(u1->suser.sec_name) > strlen(u2->suser.sec_name))
2782 for (i = 0; i < strlen(u1->suser.sec_name); i++) {
2783 if (u1->suser.sec_name[i] < u2->suser.sec_name[i])
2785 if (u1->suser.sec_name[i] > u2->suser.sec_name[i])
2793 usm_new_user(uint8_t *eid, uint32_t elen, char *uname)
2796 struct usm_user *uuser, *temp, *prev;
2798 for (uuser = usm_first_user(); uuser != NULL;
2799 (uuser = usm_next_user(uuser))) {
2800 if (uuser->user_engine_len == elen &&
2801 strlen(uname) == strlen(uuser->suser.sec_name) &&
2802 strcmp(uname, uuser->suser.sec_name) == 0 &&
2803 memcmp(eid, uuser->user_engine_id, elen) == 0)
2807 if ((uuser = (struct usm_user *)malloc(sizeof(*uuser))) == NULL)
2810 memset(uuser, 0, sizeof(*uuser));
2811 strlcpy(uuser->suser.sec_name, uname, SNMP_ADM_STR32_SIZ);
2812 memcpy(uuser->user_engine_id, eid, elen);
2813 uuser->user_engine_len = elen;
2815 if ((prev = SLIST_FIRST(&usm_userlist)) == NULL ||
2816 usm_compare_user(uuser, prev) < 0) {
2817 SLIST_INSERT_HEAD(&usm_userlist, uuser, up);
2821 SLIST_FOREACH(temp, &usm_userlist, up) {
2822 if ((cmp = usm_compare_user(uuser, temp)) <= 0)
2827 if (temp == NULL || cmp < 0)
2828 SLIST_INSERT_AFTER(prev, uuser, up);
2830 SLIST_INSERT_AFTER(temp, uuser, up);
2832 syslog(LOG_ERR, "User %s exists", uuser->suser.sec_name);
2841 usm_delete_user(struct usm_user *uuser)
2843 SLIST_REMOVE(&usm_userlist, uuser, usm_user, up);
2848 usm_flush_users(void)
2850 struct usm_user *uuser;
2852 while ((uuser = SLIST_FIRST(&usm_userlist)) != NULL) {
2853 SLIST_REMOVE_HEAD(&usm_userlist, up);
2857 SLIST_INIT(&usm_userlist);
2861 * RFC 3415 View-based Access Control Model support
2864 vacm_first_user(void)
2866 return (SLIST_FIRST(&vacm_userlist));
2870 vacm_next_user(struct vacm_user *vuser)
2875 return (SLIST_NEXT(vuser, vvu));
2879 vacm_compare_user(struct vacm_user *v1, struct vacm_user *v2)
2883 if (v1->sec_model < v2->sec_model)
2885 if (v1->sec_model > v2->sec_model)
2888 if (strlen(v1->secname) < strlen(v2->secname))
2890 if (strlen(v1->secname) > strlen(v2->secname))
2893 for (i = 0; i < strlen(v1->secname); i++) {
2894 if (v1->secname[i] < v2->secname[i])
2896 if (v1->secname[i] > v2->secname[i])
2904 vacm_new_user(int32_t smodel, char *uname)
2907 struct vacm_user *user, *temp, *prev;
2909 SLIST_FOREACH(user, &vacm_userlist, vvu)
2910 if (strcmp(uname, user->secname) == 0 &&
2911 smodel == user->sec_model)
2914 if ((user = (struct vacm_user *)malloc(sizeof(*user))) == NULL)
2917 memset(user, 0, sizeof(*user));
2918 user->group = &vacm_default_group;
2919 SLIST_INSERT_HEAD(&vacm_default_group.group_users, user, vvg);
2920 user->sec_model = smodel;
2921 strlcpy(user->secname, uname, sizeof(user->secname));
2923 if ((prev = SLIST_FIRST(&vacm_userlist)) == NULL ||
2924 vacm_compare_user(user, prev) < 0) {
2925 SLIST_INSERT_HEAD(&vacm_userlist, user, vvu);
2929 SLIST_FOREACH(temp, &vacm_userlist, vvu) {
2930 if ((cmp = vacm_compare_user(user, temp)) <= 0)
2935 if (temp == NULL || cmp < 0)
2936 SLIST_INSERT_AFTER(prev, user, vvu);
2938 SLIST_INSERT_AFTER(temp, user, vvu);
2940 syslog(LOG_ERR, "User %s exists", user->secname);
2949 vacm_delete_user(struct vacm_user *user)
2951 if (user->group != NULL && user->group != &vacm_default_group) {
2952 SLIST_REMOVE(&user->group->group_users, user, vacm_user, vvg);
2953 if (SLIST_EMPTY(&user->group->group_users)) {
2954 SLIST_REMOVE(&vacm_grouplist, user->group,
2960 SLIST_REMOVE(&vacm_userlist, user, vacm_user, vvu);
2967 vacm_user_set_group(struct vacm_user *user, u_char *octets, u_int len)
2969 struct vacm_group *group;
2971 if (len >= SNMP_ADM_STR32_SIZ)
2974 SLIST_FOREACH(group, &vacm_grouplist, vge)
2975 if (strlen(group->groupname) == len &&
2976 memcmp(octets, group->groupname, len) == 0)
2979 if (group == NULL) {
2980 if ((group = (struct vacm_group *)malloc(sizeof(*group))) == NULL)
2982 memset(group, 0, sizeof(*group));
2983 memcpy(group->groupname, octets, len);
2984 group->groupname[len] = '\0';
2985 SLIST_INSERT_HEAD(&vacm_grouplist, group, vge);
2988 SLIST_REMOVE(&user->group->group_users, user, vacm_user, vvg);
2989 SLIST_INSERT_HEAD(&group->group_users, user, vvg);
2990 user->group = group;
2996 vacm_groups_init(void)
2998 SLIST_INSERT_HEAD(&vacm_grouplist, &vacm_default_group, vge);
3001 struct vacm_access *
3002 vacm_first_access_rule(void)
3004 return (TAILQ_FIRST(&vacm_accesslist));
3007 struct vacm_access *
3008 vacm_next_access_rule(struct vacm_access *acl)
3013 return (TAILQ_NEXT(acl, vva));
3017 vacm_compare_access_rule(struct vacm_access *v1, struct vacm_access *v2)
3021 if (strlen(v1->group->groupname) < strlen(v2->group->groupname))
3023 if (strlen(v1->group->groupname) > strlen(v2->group->groupname))
3026 for (i = 0; i < strlen(v1->group->groupname); i++) {
3027 if (v1->group->groupname[i] < v2->group->groupname[i])
3029 if (v1->group->groupname[i] > v2->group->groupname[i])
3033 if (strlen(v1->ctx_prefix) < strlen(v2->ctx_prefix))
3035 if (strlen(v1->ctx_prefix) > strlen(v2->ctx_prefix))
3038 for (i = 0; i < strlen(v1->ctx_prefix); i++) {
3039 if (v1->ctx_prefix[i] < v2->ctx_prefix[i])
3041 if (v1->ctx_prefix[i] > v2->ctx_prefix[i])
3045 if (v1->sec_model < v2->sec_model)
3047 if (v1->sec_model > v2->sec_model)
3050 if (v1->sec_level < v2->sec_level)
3052 if (v1->sec_level > v2->sec_level)
3058 struct vacm_access *
3059 vacm_new_access_rule(char *gname, char *cprefix, int32_t smodel, int32_t slevel)
3061 struct vacm_group *group;
3062 struct vacm_access *acl, *temp;
3064 TAILQ_FOREACH(acl, &vacm_accesslist, vva) {
3065 if (acl->group == NULL)
3067 if (strcmp(gname, acl->group->groupname) == 0 &&
3068 strcmp(cprefix, acl->ctx_prefix) == 0 &&
3069 acl->sec_model == smodel && acl->sec_level == slevel)
3073 /* Make sure the group exists */
3074 SLIST_FOREACH(group, &vacm_grouplist, vge)
3075 if (strcmp(gname, group->groupname) == 0)
3081 if ((acl = (struct vacm_access *)malloc(sizeof(*acl))) == NULL)
3084 memset(acl, 0, sizeof(*acl));
3086 strlcpy(acl->ctx_prefix, cprefix, sizeof(acl->ctx_prefix));
3087 acl->sec_model = smodel;
3088 acl->sec_level = slevel;
3090 if ((temp = TAILQ_FIRST(&vacm_accesslist)) == NULL ||
3091 vacm_compare_access_rule(acl, temp) < 0) {
3092 TAILQ_INSERT_HEAD(&vacm_accesslist, acl, vva);
3096 TAILQ_FOREACH(temp, &vacm_accesslist, vva)
3097 if (vacm_compare_access_rule(acl, temp) < 0) {
3098 TAILQ_INSERT_BEFORE(temp, acl, vva);
3102 TAILQ_INSERT_TAIL(&vacm_accesslist, acl, vva);
3108 vacm_delete_access_rule(struct vacm_access *acl)
3110 TAILQ_REMOVE(&vacm_accesslist, acl, vva);
3117 vacm_first_view(void)
3119 return (SLIST_FIRST(&vacm_viewlist));
3123 vacm_next_view(struct vacm_view *view)
3128 return (SLIST_NEXT(view, vvl));
3132 vacm_compare_view(struct vacm_view *v1, struct vacm_view *v2)
3136 if (strlen(v1->viewname) < strlen(v2->viewname))
3138 if (strlen(v1->viewname) > strlen(v2->viewname))
3141 for (i = 0; i < strlen(v1->viewname); i++) {
3142 if (v1->viewname[i] < v2->viewname[i])
3144 if (v1->viewname[i] > v2->viewname[i])
3148 return (asn_compare_oid(&v1->subtree, &v2->subtree));
3152 vacm_new_view(char *vname, struct asn_oid *oid)
3155 struct vacm_view *view, *temp, *prev;
3157 SLIST_FOREACH(view, &vacm_viewlist, vvl)
3158 if (strcmp(vname, view->viewname) == 0)
3161 if ((view = (struct vacm_view *)malloc(sizeof(*view))) == NULL)
3164 memset(view, 0, sizeof(*view));
3165 strlcpy(view->viewname, vname, sizeof(view->viewname));
3166 asn_append_oid(&view->subtree, oid);
3168 if ((prev = SLIST_FIRST(&vacm_viewlist)) == NULL ||
3169 vacm_compare_view(view, prev) < 0) {
3170 SLIST_INSERT_HEAD(&vacm_viewlist, view, vvl);
3174 SLIST_FOREACH(temp, &vacm_viewlist, vvl) {
3175 if ((cmp = vacm_compare_view(view, temp)) <= 0)
3180 if (temp == NULL || cmp < 0)
3181 SLIST_INSERT_AFTER(prev, view, vvl);
3183 SLIST_INSERT_AFTER(temp, view, vvl);
3185 syslog(LOG_ERR, "View %s exists", view->viewname);
3194 vacm_delete_view(struct vacm_view *view)
3196 SLIST_REMOVE(&vacm_viewlist, view, vacm_view, vvl);
3202 struct vacm_context *
3203 vacm_first_context(void)
3205 return (SLIST_FIRST(&vacm_contextlist));
3208 struct vacm_context *
3209 vacm_next_context(struct vacm_context *vacmctx)
3211 if (vacmctx == NULL)
3214 return (SLIST_NEXT(vacmctx, vcl));
3217 struct vacm_context *
3218 vacm_add_context(char *ctxname, int regid)
3221 struct vacm_context *ctx, *temp, *prev;
3223 SLIST_FOREACH(ctx, &vacm_contextlist, vcl)
3224 if (strcmp(ctxname, ctx->ctxname) == 0) {
3225 syslog(LOG_ERR, "Context %s exists", ctx->ctxname);
3229 if ((ctx = (struct vacm_context *)malloc(sizeof(*ctx))) == NULL)
3232 memset(ctx, 0, sizeof(*ctx));
3233 strlcpy(ctx->ctxname, ctxname, sizeof(ctx->ctxname));
3236 if ((prev = SLIST_FIRST(&vacm_contextlist)) == NULL ||
3237 strlen(ctx->ctxname) < strlen(prev->ctxname) ||
3238 strcmp(ctx->ctxname, prev->ctxname) < 0) {
3239 SLIST_INSERT_HEAD(&vacm_contextlist, ctx, vcl);
3243 SLIST_FOREACH(temp, &vacm_contextlist, vcl) {
3244 if (strlen(ctx->ctxname) < strlen(temp->ctxname) ||
3245 strcmp(ctx->ctxname, temp->ctxname) < 0) {
3252 if (temp == NULL || cmp < 0)
3253 SLIST_INSERT_AFTER(prev, ctx, vcl);
3255 SLIST_INSERT_AFTER(temp, ctx, vcl);
3257 syslog(LOG_ERR, "Context %s exists", ctx->ctxname);
3266 vacm_flush_contexts(int regid)
3268 struct vacm_context *ctx, *temp;
3270 SLIST_FOREACH_SAFE(ctx, &vacm_contextlist, vcl, temp)
3271 if (ctx->regid == regid) {
3272 SLIST_REMOVE(&vacm_contextlist, ctx, vacm_context, vcl);