Initial revision
diff --git a/bgpd/bgp_snmp.c b/bgpd/bgp_snmp.c
new file mode 100644
index 0000000..bf9c7f8
--- /dev/null
+++ b/bgpd/bgp_snmp.c
@@ -0,0 +1,875 @@
+/* BGP4 SNMP support
+ Copyright (C) 1999, 2000 Kunihiro Ishiguro
+
+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
+#include <asn1.h>
+#include <snmp.h>
+#include <snmp_impl.h>
+
+#include "if.h"
+#include "log.h"
+#include "prefix.h"
+#include "command.h"
+#include "thread.h"
+#include "smux.h"
+
+#include "bgpd/bgpd.h"
+#include "bgpd/bgp_table.h"
+#include "bgpd/bgp_aspath.h"
+#include "bgpd/bgp_attr.h"
+#include "bgpd/bgp_route.h"
+#include "bgpd/bgp_fsm.h"
+
+/* BGP4-MIB described in RFC1657. */
+#define BGP4MIB 1,3,6,1,2,1,15
+
+/* Zebra enterprise BGP MIB. This variable is used for register
+ OSPF MIB to SNMP agent under SMUX protocol. */
+#define BGPDMIB 1,3,6,1,4,1,3317,1,2,2
+
+/* BGP MIB bgpVersion. */
+#define BGPVERSION 0
+
+/* BGP MIB bgpLocalAs. */
+#define BGPLOCALAS 0
+
+/* BGP MIB bgpPeerTable. */
+#define BGPPEERIDENTIFIER 1
+#define BGPPEERSTATE 2
+#define BGPPEERADMINSTATUS 3
+#define BGPPEERNEGOTIATEDVERSION 4
+#define BGPPEERLOCALADDR 5
+#define BGPPEERLOCALPORT 6
+#define BGPPEERREMOTEADDR 7
+#define BGPPEERREMOTEPORT 8
+#define BGPPEERREMOTEAS 9
+#define BGPPEERINUPDATES 10
+#define BGPPEEROUTUPDATES 11
+#define BGPPEERINTOTALMESSAGES 12
+#define BGPPEEROUTTOTALMESSAGES 13
+#define BGPPEERLASTERROR 14
+#define BGPPEERFSMESTABLISHEDTRANSITIONS 15
+#define BGPPEERFSMESTABLISHEDTIME 16
+#define BGPPEERCONNECTRETRYINTERVAL 17
+#define BGPPEERHOLDTIME 18
+#define BGPPEERKEEPALIVE 19
+#define BGPPEERHOLDTIMECONFIGURED 20
+#define BGPPEERKEEPALIVECONFIGURED 21
+#define BGPPEERMINASORIGINATIONINTERVAL 22
+#define BGPPEERMINROUTEADVERTISEMENTINTERVAL 23
+#define BGPPEERINUPDATEELAPSEDTIME 24
+
+/* BGP MIB bgpIdentifier. */
+#define BGPIDENTIFIER 0
+
+/* BGP MIB bgpRcvdPathAttrTable */
+#define BGPPATHATTRPEER 1
+#define BGPPATHATTRDESTNETWORK 2
+#define BGPPATHATTRORIGIN 3
+#define BGPPATHATTRASPATH 4
+#define BGPPATHATTRNEXTHOP 5
+#define BGPPATHATTRINTERASMETRIC 6
+
+/* BGP MIB bgp4PathAttrTable. */
+#define BGP4PATHATTRPEER 1
+#define BGP4PATHATTRIPADDRPREFIXLEN 2
+#define BGP4PATHATTRIPADDRPREFIX 3
+#define BGP4PATHATTRORIGIN 4
+#define BGP4PATHATTRASPATHSEGMENT 5
+#define BGP4PATHATTRNEXTHOP 6
+#define BGP4PATHATTRMULTIEXITDISC 7
+#define BGP4PATHATTRLOCALPREF 8
+#define BGP4PATHATTRATOMICAGGREGATE 9
+#define BGP4PATHATTRAGGREGATORAS 10
+#define BGP4PATHATTRAGGREGATORADDR 11
+#define BGP4PATHATTRCALCLOCALPREF 12
+#define BGP4PATHATTRBEST 13
+#define BGP4PATHATTRUNKNOWN 14
+
+/* SNMP value hack. */
+#define INTEGER ASN_INTEGER
+#define INTEGER32 ASN_INTEGER
+#define COUNTER32 ASN_COUNTER
+#define OCTET_STRING ASN_OCTET_STR
+#define IPADDRESS ASN_IPADDRESS
+#define GAUGE32 ASN_UNSIGNED
+
+/* Declare static local variables for convenience. */
+SNMP_LOCAL_VARIABLES
+
+/* BGP-MIB instances. */
+oid bgp_oid [] = { BGP4MIB };
+oid bgpd_oid [] = { BGPDMIB };
+
+/* IP address 0.0.0.0. */
+static struct in_addr bgp_empty_addr = {0};
+
+/* Hook functions. */
+static u_char *bgpVersion ();
+static u_char *bgpLocalAs ();
+static u_char *bgpPeerTable ();
+static u_char *bgpRcvdPathAttrTable ();
+static u_char *bgpIdentifier ();
+static u_char *bgp4PathAttrTable ();
+/* static u_char *bgpTraps (); */
+
+struct variable bgp_variables[] =
+{
+ /* BGP version. */
+ {BGPVERSION, OCTET_STRING, RONLY, bgpVersion,
+ 1, {1}},
+ /* BGP local AS. */
+ {BGPLOCALAS, INTEGER, RONLY, bgpLocalAs,
+ 1, {2}},
+ /* BGP peer table. */
+ {BGPPEERIDENTIFIER, IPADDRESS, RONLY, bgpPeerTable,
+ 3, {3, 1, 1}},
+ {BGPPEERSTATE, INTEGER, RONLY, bgpPeerTable,
+ 3, {3, 1, 2}},
+ {BGPPEERADMINSTATUS, INTEGER, RWRITE, bgpPeerTable,
+ 3, {3, 1, 3}},
+ {BGPPEERNEGOTIATEDVERSION, INTEGER32, RONLY, bgpPeerTable,
+ 3, {3, 1, 4}},
+ {BGPPEERLOCALADDR, IPADDRESS, RONLY, bgpPeerTable,
+ 3, {3, 1, 5}},
+ {BGPPEERLOCALPORT, INTEGER, RONLY, bgpPeerTable,
+ 3, {3, 1, 6}},
+ {BGPPEERREMOTEADDR, IPADDRESS, RONLY, bgpPeerTable,
+ 3, {3, 1, 7}},
+ {BGPPEERREMOTEPORT, INTEGER, RONLY, bgpPeerTable,
+ 3, {3, 1, 8}},
+ {BGPPEERREMOTEAS, INTEGER, RONLY, bgpPeerTable,
+ 3, {3, 1, 9}},
+ {BGPPEERINUPDATES, COUNTER32, RONLY, bgpPeerTable,
+ 3, {3, 1, 10}},
+ {BGPPEEROUTUPDATES, COUNTER32, RONLY, bgpPeerTable,
+ 3, {3, 1, 11}},
+ {BGPPEERINTOTALMESSAGES, COUNTER32, RONLY, bgpPeerTable,
+ 3, {3, 1, 12}},
+ {BGPPEEROUTTOTALMESSAGES, COUNTER32, RONLY, bgpPeerTable,
+ 3, {3, 1, 13}},
+ {BGPPEERLASTERROR, OCTET_STRING, RONLY, bgpPeerTable,
+ 3, {3, 1, 14}},
+ {BGPPEERFSMESTABLISHEDTRANSITIONS, COUNTER32, RONLY, bgpPeerTable,
+ 3, {3, 1, 15}},
+ {BGPPEERFSMESTABLISHEDTIME, GAUGE32, RONLY, bgpPeerTable,
+ 3, {3, 1, 16}},
+ {BGPPEERCONNECTRETRYINTERVAL, INTEGER, RWRITE, bgpPeerTable,
+ 3, {3, 1, 17}},
+ {BGPPEERHOLDTIME, INTEGER, RONLY, bgpPeerTable,
+ 3, {3, 1, 18}},
+ {BGPPEERKEEPALIVE, INTEGER, RONLY, bgpPeerTable,
+ 3, {3, 1, 19}},
+ {BGPPEERHOLDTIMECONFIGURED, INTEGER, RWRITE, bgpPeerTable,
+ 3, {3, 1, 20}},
+ {BGPPEERKEEPALIVECONFIGURED, INTEGER, RWRITE, bgpPeerTable,
+ 3, {3, 1, 21}},
+ {BGPPEERMINASORIGINATIONINTERVAL, INTEGER, RWRITE, bgpPeerTable,
+ 3, {3, 1, 22}},
+ {BGPPEERMINROUTEADVERTISEMENTINTERVAL, INTEGER, RWRITE, bgpPeerTable,
+ 3, {3, 1, 23}},
+ {BGPPEERINUPDATEELAPSEDTIME, GAUGE32, RONLY, bgpPeerTable,
+ 3, {3, 1, 24}},
+ /* BGP identifier. */
+ {BGPIDENTIFIER, IPADDRESS, RONLY, bgpIdentifier,
+ 1, {4}},
+ /* BGP received path attribute table. */
+ {BGPPATHATTRPEER, IPADDRESS, RONLY, bgpRcvdPathAttrTable,
+ 3, {5, 1, 1}},
+ {BGPPATHATTRDESTNETWORK, IPADDRESS, RONLY, bgpRcvdPathAttrTable,
+ 3, {5, 1, 2}},
+ {BGPPATHATTRORIGIN, INTEGER, RONLY, bgpRcvdPathAttrTable,
+ 3, {5, 1, 3}},
+ {BGPPATHATTRASPATH, OCTET_STRING, RONLY, bgpRcvdPathAttrTable,
+ 3, {5, 1, 4}},
+ {BGPPATHATTRNEXTHOP, IPADDRESS, RONLY, bgpRcvdPathAttrTable,
+ 3, {5, 1, 5}},
+ {BGPPATHATTRINTERASMETRIC, INTEGER32, RONLY, bgpRcvdPathAttrTable,
+ 3, {5, 1, 6}},
+ /* BGP-4 received path attribute table. */
+ {BGP4PATHATTRPEER, IPADDRESS, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 1}},
+ {BGP4PATHATTRIPADDRPREFIXLEN, INTEGER, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 2}},
+ {BGP4PATHATTRIPADDRPREFIX, IPADDRESS, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 3}},
+ {BGP4PATHATTRORIGIN, INTEGER, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 4}},
+ {BGP4PATHATTRASPATHSEGMENT, OCTET_STRING, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 5}},
+ {BGP4PATHATTRNEXTHOP, IPADDRESS, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 6}},
+ {BGP4PATHATTRMULTIEXITDISC, INTEGER, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 7}},
+ {BGP4PATHATTRLOCALPREF, INTEGER, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 8}},
+ {BGP4PATHATTRATOMICAGGREGATE, INTEGER, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 9}},
+ {BGP4PATHATTRAGGREGATORAS, INTEGER, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 10}},
+ {BGP4PATHATTRAGGREGATORADDR, IPADDRESS, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 11}},
+ {BGP4PATHATTRCALCLOCALPREF, INTEGER, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 12}},
+ {BGP4PATHATTRBEST, INTEGER, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 13}},
+ {BGP4PATHATTRUNKNOWN, OCTET_STRING, RONLY, bgp4PathAttrTable,
+ 3, {6, 1, 14}},
+};
+
+static u_char *
+bgpVersion (struct variable *v, oid name[], size_t *length, int exact,
+ size_t *var_len, WriteMethod **write_method)
+{
+ static u_char version;
+
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ /* Retrun BGP version. Zebra bgpd only support version 4. */
+ version = (0x80 >> (BGP_VERSION_4 - 1));
+
+ /* Return octet string length 1. */
+ *var_len = 1;
+ return (u_char *)&version;
+}
+
+static u_char *
+bgpLocalAs (struct variable *v, oid name[], size_t *length,
+ int exact, size_t *var_len, WriteMethod **write_method)
+{
+ struct bgp *bgp;
+
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ /* Get BGP structure. */
+ bgp = bgp_get_default ();
+ if (! bgp)
+ return NULL;
+
+ return SNMP_INTEGER (bgp->as);
+}
+
+struct peer *
+peer_lookup_addr_ipv4 (struct in_addr *src)
+{
+ struct bgp *bgp;
+ struct peer *peer;
+ struct listnode *nn;
+ struct in_addr addr;
+ int ret;
+
+ bgp = bgp_get_default ();
+ if (! bgp)
+ return NULL;
+
+ LIST_LOOP (bgp->peer, peer, nn)
+ {
+ ret = inet_pton (AF_INET, peer->host, &addr);
+ if (ret > 0)
+ {
+ if (IPV4_ADDR_SAME (&addr, src))
+ return peer;
+ }
+ }
+ return NULL;
+}
+
+struct peer *
+bgp_peer_lookup_next (struct in_addr *src)
+{
+ struct bgp *bgp;
+ struct peer *peer;
+ struct listnode *nn;
+ struct in_addr *p;
+ union sockunion su;
+ int ret;
+
+ memset (&su, 0, sizeof (union sockunion));
+
+ bgp = bgp_get_default ();
+ if (! bgp)
+ return NULL;
+
+ LIST_LOOP (bgp->peer, peer, nn)
+ {
+ ret = inet_pton (AF_INET, peer->host, &su.sin.sin_addr);
+ if (ret > 0)
+ {
+ p = &su.sin.sin_addr;
+
+ if (ntohl (p->s_addr) > ntohl (src->s_addr))
+ {
+ src->s_addr = p->s_addr;
+ return peer;
+ }
+ }
+ }
+ return NULL;
+}
+
+struct peer *
+bgpPeerTable_lookup (struct variable *v, oid name[], size_t *length,
+ struct in_addr *addr, int exact)
+{
+ struct peer *peer = NULL;
+ int len;
+
+ if (exact)
+ {
+ /* Check the length. */
+ if (*length - v->namelen != sizeof (struct in_addr))
+ return NULL;
+
+ oid2in_addr (name + v->namelen, IN_ADDR_SIZE, addr);
+
+ peer = peer_lookup_addr_ipv4 (addr);
+ return peer;
+ }
+ else
+ {
+ len = *length - v->namelen;
+ if (len > 4) len = 4;
+
+ oid2in_addr (name + v->namelen, len, addr);
+
+ peer = bgp_peer_lookup_next (addr);
+
+ if (peer == NULL)
+ return NULL;
+
+ oid_copy_addr (name + v->namelen, addr, sizeof (struct in_addr));
+ *length = sizeof (struct in_addr) + v->namelen;
+
+ return peer;
+ }
+ return NULL;
+}
+
+/* BGP write methods. */
+int
+write_bgpPeerTable (int action, u_char *var_val,
+ u_char var_val_type, size_t var_val_len,
+ u_char *statP, oid *name, size_t length,
+ struct variable *v)
+{
+ struct in_addr addr;
+ struct peer *peer;
+ long intval;
+ int bigsize = SNMP_MAX_LEN;
+
+ if (var_val_type != ASN_INTEGER)
+ {
+ return SNMP_ERR_WRONGTYPE;
+ }
+ if (var_val_len != sizeof (long))
+ {
+ return SNMP_ERR_WRONGLENGTH;
+ }
+
+ if (! asn_parse_int(var_val, &bigsize, &var_val_type,
+ &intval, sizeof(long)))
+ {
+ return SNMP_ERR_WRONGENCODING;
+ }
+
+ memset (&addr, 0, sizeof (struct in_addr));
+
+ peer = bgpPeerTable_lookup (v, name, &length, &addr, 1);
+ if (! peer)
+ return SNMP_ERR_NOSUCHNAME;
+
+ printf ("val: %ld\n", intval);
+
+ switch (v->magic)
+ {
+ case BGPPEERADMINSTATUS:
+#define BGP_PeerAdmin_stop 1
+#define BGP_PeerAdmin_start 2
+ /* When the peer is established, */
+ if (intval == BGP_PeerAdmin_stop)
+ BGP_EVENT_ADD (peer, BGP_Stop);
+ else if (intval == BGP_PeerAdmin_start)
+ ; /* Do nothing. */
+ else
+ return SNMP_ERR_NOSUCHNAME;
+ break;
+ case BGPPEERCONNECTRETRYINTERVAL:
+ SET_FLAG (peer->config, PEER_CONFIG_CONNECT);
+ peer->connect = intval;
+ peer->v_connect = intval;
+ break;
+ case BGPPEERHOLDTIMECONFIGURED:
+ SET_FLAG (peer->config, PEER_CONFIG_TIMER);
+ peer->holdtime = intval;
+ peer->v_holdtime = intval;
+ break;
+ case BGPPEERKEEPALIVECONFIGURED:
+ SET_FLAG (peer->config, PEER_CONFIG_TIMER);
+ peer->keepalive = intval;
+ peer->v_keepalive = intval;
+ break;
+ case BGPPEERMINASORIGINATIONINTERVAL:
+ peer->v_asorig = intval;
+ break;
+ case BGPPEERMINROUTEADVERTISEMENTINTERVAL:
+ peer->v_routeadv = intval;
+ break;
+ }
+ return SNMP_ERR_NOERROR;
+}
+
+u_char *
+bgpPeerTable (struct variable *v, oid name[], size_t *length,
+ int exact, size_t *var_len, WriteMethod **write_method)
+{
+ static struct in_addr addr;
+ struct peer *peer;
+
+ *write_method = NULL;
+ memset (&addr, 0, sizeof (struct in_addr));
+
+ peer = bgpPeerTable_lookup (v, name, length, &addr, exact);
+ if (! peer)
+ return NULL;
+
+ switch (v->magic)
+ {
+ case BGPPEERIDENTIFIER:
+ return SNMP_IPADDRESS (peer->remote_id);
+ break;
+ case BGPPEERSTATE:
+ return SNMP_INTEGER (peer->status);
+ break;
+ case BGPPEERADMINSTATUS:
+ *write_method = write_bgpPeerTable;
+#define BGP_PeerAdmin_stop 1
+#define BGP_PeerAdmin_start 2
+ if (CHECK_FLAG (peer->flags, PEER_FLAG_SHUTDOWN))
+ return SNMP_INTEGER (BGP_PeerAdmin_stop);
+ else
+ return SNMP_INTEGER (BGP_PeerAdmin_start);
+ break;
+ case BGPPEERNEGOTIATEDVERSION:
+ return SNMP_INTEGER (peer->version);
+ break;
+ case BGPPEERLOCALADDR:
+ if (peer->su_local)
+ return SNMP_IPADDRESS (peer->su_local->sin.sin_addr);
+ else
+ return SNMP_IPADDRESS (bgp_empty_addr);
+ break;
+ case BGPPEERLOCALPORT:
+ if (peer->su_local)
+ return SNMP_INTEGER (ntohs (peer->su_local->sin.sin_port));
+ else
+ return SNMP_INTEGER (0);
+ break;
+ case BGPPEERREMOTEADDR:
+ if (peer->su_remote)
+ return SNMP_IPADDRESS (peer->su_remote->sin.sin_addr);
+ else
+ return SNMP_IPADDRESS (bgp_empty_addr);
+ break;
+ case BGPPEERREMOTEPORT:
+ if (peer->su_remote)
+ return SNMP_INTEGER (ntohs (peer->su_remote->sin.sin_port));
+ else
+ return SNMP_INTEGER (0);
+ break;
+ case BGPPEERREMOTEAS:
+ return SNMP_INTEGER (peer->as);
+ break;
+ case BGPPEERINUPDATES:
+ return SNMP_INTEGER (peer->update_in);
+ break;
+ case BGPPEEROUTUPDATES:
+ return SNMP_INTEGER (peer->update_out);
+ break;
+ case BGPPEERINTOTALMESSAGES:
+ return SNMP_INTEGER (peer->open_in + peer->update_in
+ + peer->keepalive_in + peer->notify_in
+ + peer->refresh_in + peer->dynamic_cap_in);
+ break;
+ case BGPPEEROUTTOTALMESSAGES:
+ return SNMP_INTEGER (peer->open_out + peer->update_out
+ + peer->keepalive_out + peer->notify_out
+ + peer->refresh_out, peer->dynamic_cap_out);
+ break;
+ case BGPPEERLASTERROR:
+ {
+ static u_char lasterror[2];
+ lasterror[0] = peer->notify.code;
+ lasterror[1] = peer->notify.subcode;
+ *var_len = 2;
+ return (u_char *)&lasterror;
+ }
+ break;
+ case BGPPEERFSMESTABLISHEDTRANSITIONS:
+ return SNMP_INTEGER (peer->established);
+ break;
+ case BGPPEERFSMESTABLISHEDTIME:
+ if (peer->uptime == 0)
+ return SNMP_INTEGER (0);
+ else
+ return SNMP_INTEGER (time (NULL) - peer->uptime);
+ break;
+ case BGPPEERCONNECTRETRYINTERVAL:
+ *write_method = write_bgpPeerTable;
+ return SNMP_INTEGER (peer->v_connect);
+ break;
+ case BGPPEERHOLDTIME:
+ return SNMP_INTEGER (peer->v_holdtime);
+ break;
+ case BGPPEERKEEPALIVE:
+ return SNMP_INTEGER (peer->v_keepalive);
+ break;
+ case BGPPEERHOLDTIMECONFIGURED:
+ *write_method = write_bgpPeerTable;
+ if (CHECK_FLAG (peer->config, PEER_CONFIG_TIMER))
+ return SNMP_INTEGER (peer->holdtime);
+ else
+ return SNMP_INTEGER (peer->v_holdtime);
+ break;
+ case BGPPEERKEEPALIVECONFIGURED:
+ *write_method = write_bgpPeerTable;
+ if (CHECK_FLAG (peer->config, PEER_CONFIG_TIMER))
+ return SNMP_INTEGER (peer->keepalive);
+ else
+ return SNMP_INTEGER (peer->v_keepalive);
+ break;
+ case BGPPEERMINASORIGINATIONINTERVAL:
+ *write_method = write_bgpPeerTable;
+ return SNMP_INTEGER (peer->v_asorig);
+ break;
+ case BGPPEERMINROUTEADVERTISEMENTINTERVAL:
+ *write_method = write_bgpPeerTable;
+ return SNMP_INTEGER (peer->v_routeadv);
+ break;
+ case BGPPEERINUPDATEELAPSEDTIME:
+ if (peer->update_time == 0)
+ return SNMP_INTEGER (0);
+ else
+ return SNMP_INTEGER (time (NULL) - peer->update_time);
+ break;
+ default:
+ return NULL;
+ break;
+ }
+ return NULL;
+}
+
+u_char *
+bgpIdentifier (struct variable *v, oid name[], size_t *length,
+ int exact, size_t *var_len, WriteMethod **write_method)
+{
+ struct bgp *bgp;
+
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ bgp = bgp_get_default ();
+ if (!bgp)
+ return NULL;
+
+ return SNMP_IPADDRESS (bgp->router_id);
+}
+
+u_char *
+bgpRcvdPathAttrTable (struct variable *v, oid name[], size_t *length,
+ int exact, size_t *var_len, WriteMethod **write_method)
+{
+ /* Received Path Attribute Table. This table contains, one entry
+ per path to a network, path attributes received from all peers
+ running BGP version 3 or less. This table is obsolete, having
+ been replaced in functionality with the bgp4PathAttrTable. */
+ return NULL;
+}
+
+struct bgp_info *
+bgp4PathAttrLookup (struct variable *v, oid name[], size_t *length,
+ struct bgp *bgp, struct prefix_ipv4 *addr, int exact)
+{
+ oid *offset;
+ int offsetlen;
+ struct bgp_info *binfo;
+ struct bgp_info *min;
+ struct bgp_node *rn;
+ union sockunion su;
+ int len;
+ struct in_addr paddr;
+
+#define BGP_PATHATTR_ENTRY_OFFSET \
+ (IN_ADDR_SIZE + 1 + IN_ADDR_SIZE)
+
+ if (exact)
+ {
+ if (*length - v->namelen != BGP_PATHATTR_ENTRY_OFFSET)
+ return NULL;
+
+ /* Set OID offset for prefix. */
+ offset = name + v->namelen;
+ oid2in_addr (offset, IN_ADDR_SIZE, &addr->prefix);
+ offset += IN_ADDR_SIZE;
+
+ /* Prefix length. */
+ addr->prefixlen = *offset;
+ offset++;
+
+ /* Peer address. */
+ su.sin.sin_family = AF_INET;
+ oid2in_addr (offset, IN_ADDR_SIZE, &su.sin.sin_addr);
+
+ /* Lookup node. */
+ rn = bgp_node_lookup (bgp->rib[AFI_IP][SAFI_UNICAST],
+ (struct prefix *) addr);
+ if (rn)
+ {
+ bgp_unlock_node (rn);
+
+ for (binfo = rn->info; binfo; binfo = binfo->next)
+ if (sockunion_same (&binfo->peer->su, &su))
+ return binfo;
+ }
+ }
+ else
+ {
+ offset = name + v->namelen;
+ offsetlen = *length - v->namelen;
+ len = offsetlen;
+
+ if (offsetlen == 0)
+ rn = bgp_table_top (bgp->rib[AFI_IP][SAFI_UNICAST]);
+ else
+ {
+ if (len > IN_ADDR_SIZE)
+ len = IN_ADDR_SIZE;
+
+ oid2in_addr (offset, len, &addr->prefix);
+
+ offset += IN_ADDR_SIZE;
+ offsetlen -= IN_ADDR_SIZE;
+
+ if (offsetlen > 0)
+ addr->prefixlen = *offset;
+ else
+ addr->prefixlen = len * 8;
+
+ rn = bgp_node_get (bgp->rib[AFI_IP][SAFI_UNICAST],
+ (struct prefix *) addr);
+
+ offset++;
+ offsetlen--;
+ }
+
+ if (offsetlen > 0)
+ {
+ len = offsetlen;
+ if (len > IN_ADDR_SIZE)
+ len = IN_ADDR_SIZE;
+
+ oid2in_addr (offset, len, &paddr);
+ }
+ else
+ paddr.s_addr = 0;
+
+ if (! rn)
+ return NULL;
+
+ do
+ {
+ min = NULL;
+
+ for (binfo = rn->info; binfo; binfo = binfo->next)
+ {
+ if (binfo->peer->su.sin.sin_family == AF_INET
+ && ntohl (paddr.s_addr)
+ < ntohl (binfo->peer->su.sin.sin_addr.s_addr))
+ {
+ if (min)
+ {
+ if (ntohl (binfo->peer->su.sin.sin_addr.s_addr)
+ < ntohl (min->peer->su.sin.sin_addr.s_addr))
+ min = binfo;
+ }
+ else
+ min = binfo;
+ }
+ }
+
+ if (min)
+ {
+ *length = v->namelen + BGP_PATHATTR_ENTRY_OFFSET;
+
+ offset = name + v->namelen;
+ oid_copy_addr (offset, &rn->p.u.prefix4, IN_ADDR_SIZE);
+ offset += IN_ADDR_SIZE;
+ *offset = rn->p.prefixlen;
+ offset++;
+ oid_copy_addr (offset, &min->peer->su.sin.sin_addr,
+ IN_ADDR_SIZE);
+ addr->prefix = rn->p.u.prefix4;
+ addr->prefixlen = rn->p.prefixlen;
+
+ bgp_unlock_node (rn);
+
+ return min;
+ }
+
+ paddr.s_addr = 0;
+ }
+ while ((rn = bgp_route_next (rn)) != NULL);
+ }
+ return NULL;
+}
+
+u_char *
+bgp4PathAttrTable (struct variable *v, oid name[], size_t *length,
+ int exact, size_t *var_len, WriteMethod **write_method)
+{
+ struct bgp *bgp;
+ struct bgp_info *binfo;
+ struct prefix_ipv4 addr;
+
+ bgp = bgp_get_default ();
+ if (! bgp)
+ return NULL;
+
+ memset (&addr, 0, sizeof (struct prefix_ipv4));
+
+ binfo = bgp4PathAttrLookup (v, name, length, bgp, &addr, exact);
+ if (! binfo)
+ return NULL;
+
+ switch (v->magic)
+ {
+ case BGP4PATHATTRPEER: /* 1 */
+ return SNMP_IPADDRESS (binfo->peer->su.sin.sin_addr);
+ break;
+ case BGP4PATHATTRIPADDRPREFIXLEN: /* 2 */
+ return SNMP_INTEGER (addr.prefixlen);
+ break;
+ case BGP4PATHATTRIPADDRPREFIX: /* 3 */
+ return SNMP_IPADDRESS (addr.prefix);
+ break;
+ case BGP4PATHATTRORIGIN: /* 4 */
+ return SNMP_INTEGER (binfo->attr->origin);
+ break;
+ case BGP4PATHATTRASPATHSEGMENT: /* 5 */
+ *var_len = binfo->attr->aspath->length;
+ return (u_char *) binfo->attr->aspath->data;
+ break;
+ case BGP4PATHATTRNEXTHOP: /* 6 */
+ return SNMP_IPADDRESS (binfo->attr->nexthop);
+ break;
+ case BGP4PATHATTRMULTIEXITDISC: /* 7 */
+ return SNMP_INTEGER (binfo->attr->med);
+ break;
+ case BGP4PATHATTRLOCALPREF: /* 8 */
+ return SNMP_INTEGER (binfo->attr->local_pref);
+ break;
+ case BGP4PATHATTRATOMICAGGREGATE: /* 9 */
+ return SNMP_INTEGER (1);
+ break;
+ case BGP4PATHATTRAGGREGATORAS: /* 10 */
+ return SNMP_INTEGER (binfo->attr->aggregator_as);
+ break;
+ case BGP4PATHATTRAGGREGATORADDR: /* 11 */
+ return SNMP_IPADDRESS (binfo->attr->aggregator_addr);
+ break;
+ case BGP4PATHATTRCALCLOCALPREF: /* 12 */
+ return SNMP_INTEGER (-1);
+ break;
+ case BGP4PATHATTRBEST: /* 13 */
+#define BGP4_PathAttrBest_false 1
+#define BGP4_PathAttrBest_true 2
+ if (CHECK_FLAG (binfo->flags, BGP_INFO_SELECTED))
+ return SNMP_INTEGER (BGP4_PathAttrBest_true);
+ else
+ return SNMP_INTEGER (BGP4_PathAttrBest_false);
+ break;
+ case BGP4PATHATTRUNKNOWN: /* 14 */
+ *var_len = 0;
+ return NULL;
+ break;
+ }
+ return NULL;
+}
+
+/* BGP Traps. */
+struct trap_object bgpTrapList[] =
+{
+ {bgpPeerTable, 3, {3, 1, BGPPEERREMOTEADDR}},
+ {bgpPeerTable, 3, {3, 1, BGPPEERLASTERROR}},
+ {bgpPeerTable, 3, {3, 1, BGPPEERSTATE}}
+};
+
+void
+bgpTrapEstablished (struct peer *peer)
+{
+ int ret;
+ struct in_addr addr;
+ oid index[sizeof (oid) * IN_ADDR_SIZE];
+
+ ret = inet_aton (peer->host, &addr);
+ if (ret == 0)
+ return;
+
+ oid_copy_addr (index, &addr, IN_ADDR_SIZE);
+
+ smux_trap (bgp_oid, sizeof bgp_oid / sizeof (oid),
+ index, IN_ADDR_SIZE,
+ bgpTrapList, sizeof bgpTrapList / sizeof (struct trap_object),
+ bm->start_time - time (NULL));
+}
+
+void
+bgpTrapBackwardTransition (struct peer *peer)
+{
+ int ret;
+ struct in_addr addr;
+ oid index[sizeof (oid) * IN_ADDR_SIZE];
+
+ ret = inet_aton (peer->host, &addr);
+ if (ret == 0)
+ return;
+
+ oid_copy_addr (index, &addr, IN_ADDR_SIZE);
+
+ smux_trap (bgp_oid, sizeof bgp_oid / sizeof (oid),
+ index, IN_ADDR_SIZE,
+ bgpTrapList, sizeof bgpTrapList / sizeof (struct trap_object),
+ bm->start_time - time (NULL));
+}
+
+void
+bgp_snmp_init ()
+{
+ smux_init (bgpd_oid, sizeof bgpd_oid / sizeof (oid));
+ REGISTER_MIB("mibII/bgp", bgp_variables, variable, bgp_oid);
+ smux_start ();
+}
+#endif /* HAVE_SNMP */