static struct rip_peer *
rip2PeerLookup (struct variable *v, oid name[], size_t *length,
struct in_addr *addr, int exact)
{
int len;
struct rip_peer *peer;
if (exact)
{
/* Check the length. */
if (*length - v->namelen != sizeof (struct in_addr) + 1)
return NULL;
oid2in_addr (name + v->namelen, sizeof (struct in_addr), addr);
peer = rip_peer_lookup (addr);
if (peer->domain == name[v->namelen + sizeof (struct in_addr)])
return peer;
return NULL;
}
else
{
len = *length - v->namelen;
if (len > 4) len = 4;
oid2in_addr (name + v->namelen, len, addr);
len = *length - v->namelen;
peer = rip_peer_lookup (addr);
if (peer)
{
if ((len < sizeof (struct in_addr) + 1) ||
(peer->domain > name[v->namelen + sizeof (struct in_addr)]))
{
oid_copy_addr (name + v->namelen, &peer->addr,
sizeof (struct in_addr));
name[v->namelen + sizeof (struct in_addr)] = peer->domain;
*length = sizeof (struct in_addr) + v->namelen + 1;
return peer;
}
}
peer = rip_peer_lookup_next (addr);
if (! peer)
return NULL;
oid_copy_addr (name + v->namelen, &peer->addr,
sizeof (struct in_addr));
name[v->namelen + sizeof (struct in_addr)] = peer->domain;
*length = sizeof (struct in_addr) + v->namelen + 1;
return peer;
}
return NULL;
}
static struct interface *
rip2IfLookup (struct variable *v, oid name[], size_t *length,
struct in_addr *addr, int exact)
{
int len;
struct interface *ifp;
if (exact)
{
/* Check the length. */
if (*length - v->namelen != sizeof (struct in_addr))
return NULL;
oid2in_addr (name + v->namelen, sizeof (struct in_addr), addr);
return if_lookup_exact_address (*addr);
}
else
{
len = *length - v->namelen;
if (len > 4) len = 4;
oid2in_addr (name + v->namelen, len, addr);
ifp = rip_ifaddr_lookup_next (addr);
if (ifp == NULL)
return NULL;
oid_copy_addr (name + v->namelen, addr, sizeof (struct in_addr));
*length = v->namelen + sizeof (struct in_addr);
return ifp;
}
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;
ospf6_id2str (area_id.s_addr, a, sizeof (a));
ospf6_id2str (adv_router.s_addr, b, sizeof (b));
ospf6_id2str (id.s_addr, 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;
}
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;
}
