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/*
* $Id$
*/
/*
* Smux module authored by Rohit Dube.
*/
#include <net-snmp/net-snmp-config.h>
#include <stdio.h>
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_ERR_H
#include <err.h>
#endif
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#include <errno.h>
#include <netdb.h>
#include <sys/stat.h>
#include <sys/socket.h>
#if HAVE_SYS_FILIO_H
#include <sys/filio.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "smux.h"
#include "snmp_bgp.h"
struct variable13 bgp_variables[] = {
{BGPVERSION, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY,
var_bgp, 1, {1}},
{BGPLOCALAS, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 1, {2}},
{BGPIDENTIFIER, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY,
var_bgp, 1, {4}},
{BGPPEERIDENTIFIER, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 1}},
{BGPPEERSTATE, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 2}},
{BGPPEERADMINSTATUS, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 3}},
{BGPPEERNEGOTIATEDVERSION, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 4}},
{BGPPEERLOCALADDR, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 5}},
{BGPPEERLOCALPORT, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 6}},
{BGPPEERREMOTEADDR, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 7}},
{BGPPEERREMOTEPORT, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 8}},
{BGPPEERREMOTEAS, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 9}},
{BGPPEERINUPDATES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 10}},
{BGPPEEROUTUPDATES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 11}},
{BGPPEERINTOTALMESSAGES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 12}},
{BGPPEEROUTTOTALMESSAGES, ASN_COUNTER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 13}},
{BGPPEERLASTERROR, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {3, 1, 14}},
{BGPPATHATTRPEER, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {5, 1, 1}},
{BGPPATHATTRDESTNETWORK, ASN_IPADDRESS, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {5, 1, 2}},
{BGPPATHATTRORIGIN, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {5, 1, 3}},
{BGPPATHATTRASPATH, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {5, 1, 4}},
{BGPPATHATTRNEXTHOP, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {5, 1, 5}},
{BGPPATHATTRINTERASMETRIC, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY,
var_bgp, 3, {5, 1, 6}}
};
oid bgp_variables_oid[] = { NETSNMP_MIB2_OID, 15 };
void
init_snmp_bdp(void)
{
REGISTER_MIB("smux/snmp_bgp", bgp_variables, variable13,
bgp_variables_oid);
}
static oid max_bgp_mib[] =
{ 1, 3, 6, 1, 2, 1, 15, 5, 1, 6, 255, 255, 255, 255 };
static oid min_bgp_mib[] = { 1, 3, 6, 1, 2, 1, 15, 1, 0 };
extern u_char smux_type;
u_char *
var_bgp(struct variable *vp,
oid * name,
int *length, int exact, int *var_len, WriteMethod ** write_method)
{
u_char *var;
int result;
DEBUGMSGTL(("smux/snmp_bgp",
"[var_bgp] var len %d, oid requested Len %d-", *var_len,
*length));
DEBUGMSGOID(("smux/snmp_bgp", name, *length));
DEBUGMSG(("smux/snmp_bgp", "\n"));
/*
* Pass on the request to Gated.
* If the request sent out was a get next, check to see if
* it lies in the bgp range. If it doesn't, return NULL.
* In either case, make sure that errors are checked on the
* returned packets.
*/
/*
* No writes for now
*/
*write_method = NULL;
/*
* Donot allow access to the peer stuff as it crashes gated.
* However A GetNext on the last 23.3.1.9 variable will force gated into
* the peer stuff and cause it to crash.
* The only way to fix this is to either solve the Gated problem, or
* remove the peer variables from Gated itself and cause it to return
* NULL at the crossing. Currently doing the later.
*/
/*
* Reject GET and GETNEXT for anything above bgpifconf range
*/
result = snmp_oid_compare(name, *length, max_bgp_mib,
sizeof(max_bgp_mib) / sizeof(u_int));
if (result >= 0) {
DEBUGMSGTL(("smux/snmp_bgp", "Over shot\n"));
return NULL;
}
/*
* for GETs we need to be in the bgp range so reject anything below
*/
result = snmp_oid_compare(name, *length, min_bgp_mib,
sizeof(min_bgp_mib) / sizeof(u_int));
if (exact && (result < 0)) {
DEBUGMSGTL(("smux/snmp_bgp",
"Exact but doesn't match length %d, size %d\n",
*length, sizeof(min_bgp_mib)));
return NULL;
}
/*
* On return, 'var' points to the value returned which is of length
* '*var_len'. 'name' points to the new (same as the one passed in for
* GETs) oid which has 'length' suboids.
* 'smux_type' contains the type of the variable.
*/
var = smux_snmp_process(exact, name, length, var_len);
DEBUGMSGTL(("smux/snmp_bgp",
"[var_bgp] var len %d, oid obtained Len %d-", *var_len,
*length));
DEBUGMSGOID(("smux/snmp_bgp", name, *length));
DEBUGMSG(("smux/snmp_bgp", "\n"));
vp->type = smux_type;
/*
* XXX Need a mechanism to return errors in gated's responses
*/
if (var == NULL)
return NULL;
/*
* Any resullt returned should be within the bgp tree.
* bgp_mib - static u_int bgp_mib[] = {1, 3, 6, 1, 2, 1, 15};
*/
if (memcmp(bgp_mib, name, sizeof(bgp_mib)) != 0) {
return NULL;
} else {
return var;
}
}
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