ospf6_snmp.c
上传用户:xiaozhuqw
上传日期:2009-11-15
资源大小:1338k
文件大小:17k
- /* 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 <zebra.h>
- #ifdef HAVE_SNMP
- #ifdef HAVE_NETSNMP
- #include <net-snmp/net-snmp-config.h>
- #endif /*HAVE_NETSNMP*/
- #include <asn1.h>
- #include <snmp.h>
- #include <snmp_impl.h>
- #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
- /* Zebra enterprise ospf6d MIB */
- #define OSPF6DOID 1,3,6,1,4,1,3317,1,2,6
- /* 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 };
- oid ospf6d_oid [] = { OSPF6DOID };
- /* 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;
- listnode node;
- 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_info ("SNMP access by area: %s, exact=%d len=%d length=%d",
- inet_ntoa (* (struct in_addr *) &area_id),
- exact, len, *length);
- for (node = listhead (ospf6->area_list); node; nextnode (node))
- {
- oa = (struct ospf6_area *) getdata (node);
- 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_info ("SNMP found area: %s, exact=%d len=%d length=%d",
- inet_ntoa (* (struct in_addr *) &area->area_id),
- exact, len, *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;
- 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_info ("SNMP access by lsdb: area=%s exact=%d length=%d magic=%d"
- " type=%#x adv_router=%s id=%s",
- a, exact, *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 (node = listhead (ospf6->area_list); node; nextnode (node))
- {
- oa = (struct ospf6_area *) getdata (node);
- 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_info ("SNMP respond: No LSA to return");
- return NULL;
- }
- oa = OSPF6_AREA (lsa->lsdb->data);
- zlog_info ("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 ()
- {
- smux_init (ospf6d_oid, sizeof (ospf6d_oid) / sizeof (oid));
- REGISTER_MIB ("OSPFv3MIB", ospfv3_variables, variable, ospfv3_oid);
- smux_start ();
- }
- #endif /* HAVE_SNMP */