/* OSPFv3 SNMP support * Copyright (C) 2004 Yasuhiro Ohara * * This file is part of GNU Zebra. * * GNU Zebra is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * * GNU Zebra is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GNU Zebra; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include #ifdef HAVE_SNMP #ifdef HAVE_NETSNMP #include #include #else #include #include #include #endif #include "log.h" #include "vty.h" #include "linklist.h" #include "smux.h" #include "ospf6_proto.h" #include "ospf6_lsa.h" #include "ospf6_lsdb.h" #include "ospf6_route.h" #include "ospf6_top.h" #include "ospf6_area.h" #include "ospf6_interface.h" #include "ospf6_message.h" #include "ospf6_neighbor.h" #include "ospf6d.h" /* OSPFv3-MIB */ #define OSPFv3MIB 1,3,6,1,3,102 /* OSPFv3 MIB General Group values. */ #define OSPFv3ROUTERID 1 #define OSPFv3ADMINSTAT 2 #define OSPFv3VERSIONNUMBER 3 #define OSPFv3AREABDRRTRSTATUS 4 #define OSPFv3ASBDRRTRSTATUS 5 #define OSPFv3ASSCOPELSACOUNT 6 #define OSPFv3ASSCOPELSACHECKSUMSUM 7 #define OSPFv3ORIGINATENEWLSAS 8 #define OSPFv3RXNEWLSAS 9 #define OSPFv3EXTLSACOUNT 10 #define OSPFv3EXTAREALSDBLIMIT 11 #define OSPFv3MULTICASTEXTENSIONS 12 #define OSPFv3EXITOVERFLOWINTERVAL 13 #define OSPFv3DEMANDEXTENSIONS 14 #define OSPFv3TRAFFICENGINEERINGSUPPORT 15 #define OSPFv3REFERENCEBANDWIDTH 16 #define OSPFv3RESTARTSUPPORT 17 #define OSPFv3RESTARTINTERVAL 18 #define OSPFv3RESTARTSTATUS 19 #define OSPFv3RESTARTAGE 20 #define OSPFv3RESTARTEXITREASON 21 /* OSPFv3 MIB Area Table values. */ #define OSPFv3AREAID 1 #define OSPFv3IMPORTASEXTERN 2 #define OSPFv3AREASPFRUNS 3 #define OSPFv3AREABDRRTRCOUNT 4 #define OSPFv3AREAASBDRRTRCOUNT 5 #define OSPFv3AREASCOPELSACOUNT 6 #define OSPFv3AREASCOPELSACKSUMSUM 7 #define OSPFv3AREASUMMARY 8 #define OSPFv3AREASTATUS 9 #define OSPFv3STUBMETRIC 10 #define OSPFv3AREANSSATRANSLATORROLE 11 #define OSPFv3AREANSSATRANSLATORSTATE 12 #define OSPFv3AREANSSATRANSLATORSTABILITYINTERVAL 13 #define OSPFv3AREANSSATRANSLATOREVENTS 14 #define OSPFv3AREASTUBMETRICTYPE 15 /* OSPFv3 MIB Area Lsdb Table values. */ #define OSPFv3AREALSDBAREAID 1 #define OSPFv3AREALSDBTYPE 2 #define OSPFv3AREALSDBROUTERID 3 #define OSPFv3AREALSDBLSID 4 #define OSPFv3AREALSDBSEQUENCE 5 #define OSPFv3AREALSDBAGE 6 #define OSPFv3AREALSDBCHECKSUM 7 #define OSPFv3AREALSDBADVERTISEMENT 8 #define OSPFv3AREALSDBTYPEKNOWN 9 /* SYNTAX Status from OSPF-MIB. */ #define OSPF_STATUS_ENABLED 1 #define OSPF_STATUS_DISABLED 2 /* SNMP value hack. */ #define COUNTER ASN_COUNTER #define INTEGER ASN_INTEGER #define GAUGE ASN_GAUGE #define TIMETICKS ASN_TIMETICKS #define IPADDRESS ASN_IPADDRESS #define STRING ASN_OCTET_STR /* For return values e.g. SNMP_INTEGER macro */ SNMP_LOCAL_VARIABLES static struct in_addr tmp; #define INT32_INADDR(x) \ (tmp.s_addr = (x), tmp) /* OSPFv3-MIB instances. */ oid ospfv3_oid [] = { OSPFv3MIB }; /* empty ID 0.0.0.0 e.g. empty router-id */ static struct in_addr ospf6_empty_id = {0}; /* Hook functions. */ static u_char *ospfv3GeneralGroup (); static u_char *ospfv3AreaEntry (); static u_char *ospfv3AreaLsdbEntry (); struct variable ospfv3_variables[] = { /* OSPF general variables */ {OSPFv3ROUTERID, IPADDRESS, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 1}}, {OSPFv3ADMINSTAT, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 2}}, {OSPFv3VERSIONNUMBER, INTEGER, RONLY, ospfv3GeneralGroup, 3, {1, 1, 3}}, {OSPFv3AREABDRRTRSTATUS, INTEGER, RONLY, ospfv3GeneralGroup, 3, {1, 1, 4}}, {OSPFv3ASBDRRTRSTATUS, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 5}}, {OSPFv3ASSCOPELSACOUNT, GAUGE, RONLY, ospfv3GeneralGroup, 3, {1, 1, 6}}, {OSPFv3ASSCOPELSACHECKSUMSUM, INTEGER, RONLY, ospfv3GeneralGroup, 3, {1, 1, 7}}, {OSPFv3ORIGINATENEWLSAS, COUNTER, RONLY, ospfv3GeneralGroup, 3, {1, 1, 8}}, {OSPFv3RXNEWLSAS, COUNTER, RONLY, ospfv3GeneralGroup, 3, {1, 1, 9}}, {OSPFv3EXTLSACOUNT, GAUGE, RONLY, ospfv3GeneralGroup, 3, {1, 1, 10}}, {OSPFv3EXTAREALSDBLIMIT, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 11}}, {OSPFv3MULTICASTEXTENSIONS, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 12}}, {OSPFv3EXITOVERFLOWINTERVAL, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 13}}, {OSPFv3DEMANDEXTENSIONS, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 14}}, {OSPFv3TRAFFICENGINEERINGSUPPORT, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 15}}, {OSPFv3REFERENCEBANDWIDTH, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 16}}, {OSPFv3RESTARTSUPPORT, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 17}}, {OSPFv3RESTARTINTERVAL, INTEGER, RWRITE, ospfv3GeneralGroup, 3, {1, 1, 18}}, {OSPFv3RESTARTSTATUS, INTEGER, RONLY, ospfv3GeneralGroup, 3, {1, 1, 19}}, {OSPFv3RESTARTAGE, INTEGER, RONLY, ospfv3GeneralGroup, 3, {1, 1, 20}}, {OSPFv3RESTARTEXITREASON, INTEGER, RONLY, ospfv3GeneralGroup, 3, {1, 1, 21}}, /* OSPFv3 Area Data Structure */ {OSPFv3AREAID, IPADDRESS, RONLY, ospfv3AreaEntry, 4, {1, 2, 1, 1}}, {OSPFv3IMPORTASEXTERN, INTEGER, RWRITE, ospfv3AreaEntry, 4, {1, 2, 1, 2}}, {OSPFv3AREASPFRUNS, COUNTER, RONLY, ospfv3AreaEntry, 4, {1, 2, 1, 3}}, {OSPFv3AREABDRRTRCOUNT, GAUGE, RONLY, ospfv3AreaEntry, 4, {1, 2, 1, 4}}, {OSPFv3AREAASBDRRTRCOUNT, GAUGE, RONLY, ospfv3AreaEntry, 4, {1, 2, 1, 5}}, {OSPFv3AREASCOPELSACOUNT, GAUGE, RONLY, ospfv3AreaEntry, 4, {1, 2, 1, 6}}, {OSPFv3AREASCOPELSACKSUMSUM, INTEGER, RONLY, ospfv3AreaEntry, 4, {1, 2, 1, 7}}, {OSPFv3AREASUMMARY, INTEGER, RWRITE, ospfv3AreaEntry, 4, {1, 2, 1, 8}}, {OSPFv3AREASTATUS, INTEGER, RWRITE, ospfv3AreaEntry, 4, {1, 2, 1, 9}}, {OSPFv3STUBMETRIC, INTEGER, RWRITE, ospfv3AreaEntry, 4, {1, 2, 1, 10}}, {OSPFv3AREANSSATRANSLATORROLE, INTEGER, RWRITE, ospfv3AreaEntry, 4, {1, 2, 1, 11}}, {OSPFv3AREANSSATRANSLATORSTATE, INTEGER, RONLY, ospfv3AreaEntry, 4, {1, 2, 1, 12}}, {OSPFv3AREANSSATRANSLATORSTABILITYINTERVAL, INTEGER, RWRITE, ospfv3AreaEntry, 4, {1, 2, 1, 13}}, {OSPFv3AREANSSATRANSLATOREVENTS, COUNTER, RONLY, ospfv3AreaEntry, 4, {1, 2, 1, 14}}, {OSPFv3AREASTUBMETRICTYPE, INTEGER, RWRITE, ospfv3AreaEntry, 4, {1, 2, 1, 15}}, {OSPFv3AREALSDBAREAID, IPADDRESS, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 1}}, {OSPFv3AREALSDBTYPE, GAUGE, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 2}}, {OSPFv3AREALSDBROUTERID, IPADDRESS, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 3}}, {OSPFv3AREALSDBLSID, IPADDRESS, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 4}}, {OSPFv3AREALSDBSEQUENCE, INTEGER, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 5}}, {OSPFv3AREALSDBAGE, INTEGER, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 6}}, {OSPFv3AREALSDBCHECKSUM, INTEGER, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 7}}, {OSPFv3AREALSDBADVERTISEMENT, STRING, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 8}}, {OSPFv3AREALSDBTYPEKNOWN, INTEGER, RONLY, ospfv3AreaLsdbEntry, 4, {1, 4, 1, 9}}, }; static u_char * ospfv3GeneralGroup (struct variable *v, oid *name, size_t *length, int exact, size_t *var_len, WriteMethod **write_method) { /* Check whether the instance identifier is valid */ if (smux_header_generic (v, name, length, exact, var_len, write_method) == MATCH_FAILED) return NULL; /* Return the current value of the variable */ switch (v->magic) { case OSPFv3ROUTERID: /* 1*/ /* Router-ID of this OSPF instance. */ if (ospf6) return SNMP_IPADDRESS (INT32_INADDR (ospf6->router_id)); else return SNMP_IPADDRESS (ospf6_empty_id); break; case OSPFv3ADMINSTAT: /* 2*/ break; case OSPFv3VERSIONNUMBER: /* 3*/ break; case OSPFv3AREABDRRTRSTATUS: /* 4*/ break; case OSPFv3ASBDRRTRSTATUS: /* 5*/ break; case OSPFv3ASSCOPELSACOUNT: /* 6*/ break; case OSPFv3ASSCOPELSACHECKSUMSUM: /* 7*/ break; case OSPFv3ORIGINATENEWLSAS: /* 8*/ break; case OSPFv3RXNEWLSAS: /* 9*/ break; case OSPFv3EXTLSACOUNT: /*10*/ break; case OSPFv3EXTAREALSDBLIMIT: /*11*/ break; case OSPFv3MULTICASTEXTENSIONS: /*12*/ break; case OSPFv3EXITOVERFLOWINTERVAL: /*13*/ break; case OSPFv3DEMANDEXTENSIONS: /*14*/ break; case OSPFv3TRAFFICENGINEERINGSUPPORT: /*15*/ break; case OSPFv3REFERENCEBANDWIDTH: /*16*/ break; case OSPFv3RESTARTSUPPORT: /*17*/ break; case OSPFv3RESTARTINTERVAL: /*18*/ break; case OSPFv3RESTARTSTATUS: /*19*/ break; case OSPFv3RESTARTAGE: /*20*/ break; case OSPFv3RESTARTEXITREASON: /*21*/ break; default: return NULL; } return NULL; } static u_char * ospfv3AreaEntry (struct variable *v, oid *name, size_t *length, int exact, size_t *var_len, WriteMethod **write_method) { struct ospf6_area *oa, *area = NULL; u_int32_t area_id = 0; struct listnode *node; unsigned int len; if (ospf6 == NULL) return NULL; len = *length - v->namelen; len = (len >= sizeof (u_int32_t) ? sizeof (u_int32_t) : 0); if (exact && len != sizeof (u_int32_t)) return NULL; if (len) oid2in_addr (name + v->namelen, len, (struct in_addr *) &area_id); zlog_debug ("SNMP access by area: %s, exact=%d len=%d length=%lu", inet_ntoa (* (struct in_addr *) &area_id), exact, len, (u_long)*length); for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, node, oa)) { if (area == NULL) { if (len == 0) /* return first area entry */ area = oa; else if (exact && ntohl (oa->area_id) == ntohl (area_id)) area = oa; else if (ntohl (oa->area_id) > ntohl (area_id)) area = oa; } } if (area == NULL) return NULL; *length = v->namelen + sizeof (u_int32_t); oid_copy_addr (name + v->namelen, (struct in_addr *) &area->area_id, sizeof (u_int32_t)); zlog_debug ("SNMP found area: %s, exact=%d len=%d length=%lu", inet_ntoa (* (struct in_addr *) &area->area_id), exact, len, (u_long)*length); switch (v->magic) { case OSPFv3AREAID: /* 1*/ return SNMP_IPADDRESS (INT32_INADDR (area->area_id)); break; case OSPFv3IMPORTASEXTERN: /* 2*/ return SNMP_INTEGER (ospf6->external_table->count); break; default: return NULL; break; } return NULL; } static u_char * ospfv3AreaLsdbEntry (struct variable *v, oid *name, size_t *length, int exact, size_t *var_len, WriteMethod **write_method) { struct ospf6_lsa *lsa = NULL; struct in_addr area_id; u_int16_t type; struct in_addr id; struct in_addr adv_router; int len; oid *offset; int offsetlen; char a[16], b[16], c[16]; struct ospf6_area *oa; struct listnode *node; memset (&area_id, 0, sizeof (struct in_addr)); type = 0; memset (&id, 0, sizeof (struct in_addr)); memset (&adv_router, 0, sizeof (struct in_addr)); /* Check OSPFv3 instance. */ if (ospf6 == NULL) return NULL; /* Get variable length. */ offset = name + v->namelen; offsetlen = *length - v->namelen; #define OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET \ (IN_ADDR_SIZE + 1 + IN_ADDR_SIZE + IN_ADDR_SIZE) if (exact && offsetlen != OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET) return NULL; /* Parse area-id */ len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE); if (len) oid2in_addr (offset, len, &area_id); offset += len; offsetlen -= len; /* Parse type */ len = (offsetlen < 1 ? offsetlen : 1); if (len) type = htons (*offset); offset += len; offsetlen -= len; /* Parse Router-ID */ len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE); if (len) oid2in_addr (offset, len, &adv_router); offset += len; offsetlen -= len; /* Parse LS-ID */ len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE); if (len) oid2in_addr (offset, len, &id); offset += len; offsetlen -= len; inet_ntop (AF_INET, &area_id, a, sizeof (a)); inet_ntop (AF_INET, &adv_router, b, sizeof (b)); inet_ntop (AF_INET, &id, c, sizeof (c)); zlog_debug ("SNMP access by lsdb: area=%s exact=%d length=%lu magic=%d" " type=%#x adv_router=%s id=%s", a, exact, (u_long)*length, v->magic, ntohs (type), b, c); if (exact) { oa = ospf6_area_lookup (area_id.s_addr, ospf6); lsa = ospf6_lsdb_lookup (type, id.s_addr, adv_router.s_addr, oa->lsdb); } else { for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, node, oa)) { if (lsa) continue; if (ntohl (oa->area_id) < ntohl (area_id.s_addr)) continue; lsa = ospf6_lsdb_lookup_next (type, id.s_addr, adv_router.s_addr, oa->lsdb); if (! lsa) { type = 0; memset (&id, 0, sizeof (struct in_addr)); memset (&adv_router, 0, sizeof (struct in_addr)); } } } if (! lsa) { zlog_debug ("SNMP respond: No LSA to return"); return NULL; } oa = OSPF6_AREA (lsa->lsdb->data); zlog_debug ("SNMP respond: area: %s lsa: %s", oa->name, lsa->name); /* Add Index (AreaId, Type, RouterId, Lsid) */ *length = v->namelen + OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET; offset = name + v->namelen; oid_copy_addr (offset, (struct in_addr *) &oa->area_id, IN_ADDR_SIZE); offset += IN_ADDR_SIZE; *offset = ntohs (lsa->header->type); offset++; oid_copy_addr (offset, (struct in_addr *) &lsa->header->adv_router, IN_ADDR_SIZE); offset += IN_ADDR_SIZE; oid_copy_addr (offset, (struct in_addr *) &lsa->header->id, IN_ADDR_SIZE); offset += IN_ADDR_SIZE; /* Return the current value of the variable */ switch (v->magic) { case OSPFv3AREALSDBAREAID: /* 1 */ area_id.s_addr = OSPF6_AREA (lsa->lsdb->data)->area_id; return SNMP_IPADDRESS (area_id); break; case OSPFv3AREALSDBTYPE: /* 2 */ return SNMP_INTEGER (ntohs (lsa->header->type)); break; case OSPFv3AREALSDBROUTERID: /* 3 */ adv_router.s_addr = lsa->header->adv_router; return SNMP_IPADDRESS (adv_router); break; case OSPFv3AREALSDBLSID: /* 4 */ id.s_addr = lsa->header->id; return SNMP_IPADDRESS (id); break; case OSPFv3AREALSDBSEQUENCE: /* 5 */ return SNMP_INTEGER (lsa->header->seqnum); break; case OSPFv3AREALSDBAGE: /* 6 */ ospf6_lsa_age_current (lsa); return SNMP_INTEGER (lsa->header->age); break; case OSPFv3AREALSDBCHECKSUM: /* 7 */ return SNMP_INTEGER (lsa->header->checksum); break; case OSPFv3AREALSDBADVERTISEMENT: /* 8 */ *var_len = ntohs (lsa->header->length); return (u_char *) lsa->header; break; case OSPFv3AREALSDBTYPEKNOWN: /* 9 */ return SNMP_INTEGER (OSPF6_LSA_IS_KNOWN (lsa->header->type) ? SNMP_TRUE : SNMP_FALSE); break; default: return NULL; break; } return NULL; } /* Register OSPFv3-MIB. */ void ospf6_snmp_init (struct thread_master *master) { smux_init (master); REGISTER_MIB ("OSPFv3MIB", ospfv3_variables, variable, ospfv3_oid); } #endif /* HAVE_SNMP */