| Current Path : /usr/src/contrib/bsnmp/snmp_mibII/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/contrib/bsnmp/snmp_mibII/mibII_interfaces.c |
/*
* Copyright (c) 2001-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
*
* Author: Harti Brandt <harti@freebsd.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Begemot: bsnmp/snmp_mibII/mibII_interfaces.c,v 1.17 2006/02/14 09:04:19 brandt_h Exp $
*
* Interfaces group.
*/
#include "mibII.h"
#include "mibII_oid.h"
/*
* This structure catches all changes to a interface entry
*/
struct ifchange {
struct snmp_dependency dep;
u_int ifindex;
uint32_t set;
int promisc;
int admin;
int traps;
uint32_t rb;
int rb_flags;
int rb_traps;
};
#define IFC_PROMISC 0x0001
#define IFC_ADMIN 0x0002
#define IFC_TRAPS 0x0004
#define IFRB_FLAGS 0x0001
#define IFRB_TRAPS 0x0002
static const struct asn_oid
oid_ifTable = OIDX_ifTable;
/*
* This function handles all changes to the interface table and interface
* extension table.
*/
static int
ifchange_func(struct snmp_context *ctx __unused, struct snmp_dependency *dep,
enum snmp_depop op)
{
struct ifchange *ifc = (struct ifchange *)dep;
struct mibif *ifp;
struct ifreq ifr, ifr1;
if ((ifp = mib_find_if(ifc->ifindex)) == NULL)
return (SNMP_ERR_NO_CREATION);
switch (op) {
case SNMP_DEPOP_COMMIT:
strncpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
if (ioctl(mib_netsock, SIOCGIFFLAGS, &ifr) == -1) {
syslog(LOG_ERR, "GIFFLAGS(%s): %m", ifp->name);
return (SNMP_ERR_GENERR);
}
if (ifc->set & IFC_PROMISC) {
ifr.ifr_flags &= ~IFF_PROMISC;
if (ifc->promisc)
ifr.ifr_flags |= IFF_PROMISC;
ifc->rb |= IFRB_FLAGS;
}
if (ifc->set & IFC_ADMIN) {
ifr.ifr_flags &= ~IFF_UP;
if (ifc->admin)
ifr.ifr_flags |= IFF_UP;
ifc->rb |= IFRB_FLAGS;
}
if (ifc->rb & IFRB_FLAGS) {
strncpy(ifr1.ifr_name, ifp->name, sizeof(ifr1.ifr_name));
if (ioctl(mib_netsock, SIOCGIFFLAGS, &ifr1) == -1) {
syslog(LOG_ERR, "GIFFLAGS(%s): %m", ifp->name);
return (SNMP_ERR_GENERR);
}
ifc->rb_flags = ifr1.ifr_flags;
if (ioctl(mib_netsock, SIOCSIFFLAGS, &ifr) == -1) {
syslog(LOG_ERR, "SIFFLAGS(%s): %m", ifp->name);
return (SNMP_ERR_GENERR);
}
(void)mib_fetch_ifmib(ifp);
}
if (ifc->set & IFC_TRAPS) {
ifc->rb |= IFRB_TRAPS;
ifc->rb_traps = ifp->trap_enable;
ifp->trap_enable = ifc->traps;
}
return (SNMP_ERR_NOERROR);
case SNMP_DEPOP_ROLLBACK:
if (ifc->rb & IFRB_FLAGS) {
strncpy(ifr.ifr_name, ifp->name, sizeof(ifr.ifr_name));
ifr.ifr_flags = ifc->rb_flags;
if (ioctl(mib_netsock, SIOCSIFFLAGS, &ifr) == -1) {
syslog(LOG_ERR, "SIFFLAGS(%s): %m", ifp->name);
return (SNMP_ERR_UNDO_FAILED);
}
(void)mib_fetch_ifmib(ifp);
}
if (ifc->rb & IFRB_TRAPS)
ifp->trap_enable = ifc->rb_traps;
return (SNMP_ERR_NOERROR);
case SNMP_DEPOP_FINISH:
return (SNMP_ERR_NOERROR);
}
abort();
}
/*
* Return difference to daemon start time in ticks truncated to a
* 32-bit value. If the timeval is 0 then return 0.
*/
static uint32_t
ticks_get_timeval(struct timeval *tv)
{
uint64_t v;
if (tv->tv_sec != 0 || tv->tv_usec != 0) {
v = 100ULL * tv->tv_sec + tv->tv_usec / 10000ULL;
if (v > start_tick)
return (v - start_tick);
}
return (0);
}
/*
* Scalars
*/
int
op_interfaces(struct snmp_context *ctx __unused, struct snmp_value *value,
u_int sub, u_int idx __unused, enum snmp_op op)
{
switch (op) {
case SNMP_OP_GETNEXT:
abort();
case SNMP_OP_GET:
break;
case SNMP_OP_SET:
return (SNMP_ERR_NOT_WRITEABLE);
case SNMP_OP_ROLLBACK:
case SNMP_OP_COMMIT:
abort();
}
switch (value->var.subs[sub - 1]) {
case LEAF_ifNumber:
value->v.integer = mib_if_number;
break;
}
return (SNMP_ERR_NOERROR);
}
/*
* Iftable entry
*/
int
op_ifentry(struct snmp_context *ctx, struct snmp_value *value,
u_int sub, u_int iidx __unused, enum snmp_op op)
{
struct mibif *ifp = NULL;
int ret;
struct ifchange *ifc;
struct asn_oid idx;
switch (op) {
case SNMP_OP_GETNEXT:
if ((ifp = NEXT_OBJECT_INT(&mibif_list, &value->var, sub)) == NULL)
return (SNMP_ERR_NOSUCHNAME);
value->var.len = sub + 1;
value->var.subs[sub] = ifp->index;
break;
case SNMP_OP_GET:
if (value->var.len - sub != 1)
return (SNMP_ERR_NOSUCHNAME);
if ((ifp = mib_find_if(value->var.subs[sub])) == NULL)
return (SNMP_ERR_NOSUCHNAME);
break;
case SNMP_OP_SET:
if (value->var.len - sub != 1)
return (SNMP_ERR_NO_CREATION);
if ((ifp = mib_find_if(value->var.subs[sub])) == NULL)
return (SNMP_ERR_NO_CREATION);
if (value->var.subs[sub - 1] != LEAF_ifAdminStatus)
return (SNMP_ERR_NOT_WRITEABLE);
idx.len = 1;
idx.subs[0] = ifp->index;
if (value->v.integer != 1 && value->v.integer != 2)
return (SNMP_ERR_WRONG_VALUE);
if ((ifc = (struct ifchange *)snmp_dep_lookup(ctx,
&oid_ifTable, &idx, sizeof(*ifc), ifchange_func)) == NULL)
return (SNMP_ERR_RES_UNAVAIL);
ifc->ifindex = ifp->index;
if (ifc->set & IFC_ADMIN)
return (SNMP_ERR_INCONS_VALUE);
ifc->set |= IFC_ADMIN;
ifc->admin = (value->v.integer == 1) ? 1 : 0;
return (SNMP_ERR_NOERROR);
case SNMP_OP_ROLLBACK:
case SNMP_OP_COMMIT:
return (SNMP_ERR_NOERROR);
}
if (ifp->mibtick < this_tick)
(void)mib_fetch_ifmib(ifp);
ret = SNMP_ERR_NOERROR;
switch (value->var.subs[sub - 1]) {
case LEAF_ifIndex:
value->v.integer = ifp->index;
break;
case LEAF_ifDescr:
ret = string_get(value, ifp->descr, -1);
break;
case LEAF_ifType:
value->v.integer = ifp->mib.ifmd_data.ifi_type;
break;
case LEAF_ifMtu:
value->v.integer = ifp->mib.ifmd_data.ifi_mtu;
break;
case LEAF_ifSpeed:
value->v.integer = ifp->mib.ifmd_data.ifi_baudrate;
break;
case LEAF_ifPhysAddress:
ret = string_get(value, ifp->physaddr,
ifp->physaddrlen);
break;
case LEAF_ifAdminStatus:
value->v.integer =
(ifp->mib.ifmd_flags & IFF_UP) ? 1 : 2;
break;
case LEAF_ifOperStatus:
/*
* According to RFC 2863 the state should be Up if the
* interface is ready to transmit packets. We takes this to
* mean that the interface should be running and should have
* a carrier. If it is running and has no carrier we interpret
* this as 'waiting for an external event' (plugging in the
* cable) and hence return 'dormant'.
*/
if (ifp->mib.ifmd_flags & IFF_RUNNING) {
if (ifp->mib.ifmd_data.ifi_link_state != LINK_STATE_UP)
value->v.integer = 5; /* state dormant */
else
value->v.integer = 1; /* state up */
} else
value->v.integer = 2; /* state down */
break;
case LEAF_ifLastChange:
value->v.uint32 =
ticks_get_timeval(&ifp->mib.ifmd_data.ifi_lastchange);
break;
case LEAF_ifInOctets:
value->v.uint32 = ifp->mib.ifmd_data.ifi_ibytes;
break;
case LEAF_ifInUcastPkts:
value->v.uint32 = ifp->mib.ifmd_data.ifi_ipackets -
ifp->mib.ifmd_data.ifi_imcasts;
break;
case LEAF_ifInNUcastPkts:
value->v.uint32 = ifp->mib.ifmd_data.ifi_imcasts;
break;
case LEAF_ifInDiscards:
value->v.uint32 = ifp->mib.ifmd_data.ifi_iqdrops;
break;
case LEAF_ifInErrors:
value->v.uint32 = ifp->mib.ifmd_data.ifi_ierrors;
break;
case LEAF_ifInUnknownProtos:
value->v.uint32 = ifp->mib.ifmd_data.ifi_noproto;
break;
case LEAF_ifOutOctets:
value->v.uint32 = ifp->mib.ifmd_data.ifi_obytes;
break;
case LEAF_ifOutUcastPkts:
value->v.uint32 = ifp->mib.ifmd_data.ifi_opackets -
ifp->mib.ifmd_data.ifi_omcasts;
break;
case LEAF_ifOutNUcastPkts:
value->v.uint32 = ifp->mib.ifmd_data.ifi_omcasts;
break;
case LEAF_ifOutDiscards:
value->v.uint32 = ifp->mib.ifmd_snd_drops;
break;
case LEAF_ifOutErrors:
value->v.uint32 = ifp->mib.ifmd_data.ifi_oerrors;
break;
case LEAF_ifOutQLen:
value->v.uint32 = ifp->mib.ifmd_snd_len;
break;
case LEAF_ifSpecific:
value->v.oid = ifp->spec_oid;
break;
}
return (SNMP_ERR_NOERROR);
}
/*
* IfXtable entry
*/
int
op_ifxtable(struct snmp_context *ctx, struct snmp_value *value,
u_int sub, u_int iidx __unused, enum snmp_op op)
{
struct mibif *ifp = NULL;
int ret;
struct ifchange *ifc;
struct asn_oid idx;
switch (op) {
again:
if (op != SNMP_OP_GETNEXT)
return (SNMP_ERR_NOSUCHNAME);
/* FALLTHROUGH */
case SNMP_OP_GETNEXT:
if ((ifp = NEXT_OBJECT_INT(&mibif_list, &value->var, sub)) == NULL)
return (SNMP_ERR_NOSUCHNAME);
value->var.len = sub + 1;
value->var.subs[sub] = ifp->index;
break;
case SNMP_OP_GET:
if (value->var.len - sub != 1)
return (SNMP_ERR_NOSUCHNAME);
if ((ifp = mib_find_if(value->var.subs[sub])) == NULL)
return (SNMP_ERR_NOSUCHNAME);
break;
case SNMP_OP_SET:
if (value->var.len - sub != 1)
return (SNMP_ERR_NO_CREATION);
if ((ifp = mib_find_if(value->var.subs[sub])) == NULL)
return (SNMP_ERR_NO_CREATION);
idx.len = 1;
idx.subs[0] = ifp->index;
if ((ifc = (struct ifchange *)snmp_dep_lookup(ctx,
&oid_ifTable, &idx, sizeof(*ifc), ifchange_func)) == NULL)
return (SNMP_ERR_RES_UNAVAIL);
ifc->ifindex = ifp->index;
switch (value->var.subs[sub - 1]) {
case LEAF_ifLinkUpDownTrapEnable:
if (value->v.integer != 1 && value->v.integer != 2)
return (SNMP_ERR_WRONG_VALUE);
if (ifc->set & IFC_TRAPS)
return (SNMP_ERR_INCONS_VALUE);
ifc->set |= IFC_TRAPS;
ifc->traps = (value->v.integer == 1) ? 1 : 0;
return (SNMP_ERR_NOERROR);
case LEAF_ifPromiscuousMode:
if (value->v.integer != 1 && value->v.integer != 2)
return (SNMP_ERR_WRONG_VALUE);
if (ifc->set & IFC_PROMISC)
return (SNMP_ERR_INCONS_VALUE);
ifc->set |= IFC_PROMISC;
ifc->promisc = (value->v.integer == 1) ? 1 : 0;
return (SNMP_ERR_NOERROR);
}
return (SNMP_ERR_NOT_WRITEABLE);
case SNMP_OP_ROLLBACK:
case SNMP_OP_COMMIT:
return (SNMP_ERR_NOERROR);
}
if (ifp->mibtick < this_tick)
(void)mib_fetch_ifmib(ifp);
ret = SNMP_ERR_NOERROR;
switch (value->var.subs[sub - 1]) {
case LEAF_ifName:
ret = string_get(value, ifp->name, -1);
break;
case LEAF_ifInMulticastPkts:
value->v.uint32 = ifp->mib.ifmd_data.ifi_imcasts;
break;
case LEAF_ifInBroadcastPkts:
value->v.uint32 = 0;
break;
case LEAF_ifOutMulticastPkts:
value->v.uint32 = ifp->mib.ifmd_data.ifi_omcasts;
break;
case LEAF_ifOutBroadcastPkts:
value->v.uint32 = 0;
break;
case LEAF_ifHCInOctets:
if (!(ifp->flags & MIBIF_HIGHSPEED))
goto again;
value->v.counter64 = MIBIF_PRIV(ifp)->hc_inoctets;
break;
case LEAF_ifHCInUcastPkts:
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
goto again;
value->v.counter64 = MIBIF_PRIV(ifp)->hc_ipackets -
MIBIF_PRIV(ifp)->hc_imcasts;
break;
case LEAF_ifHCInMulticastPkts:
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
goto again;
value->v.counter64 = MIBIF_PRIV(ifp)->hc_imcasts;
break;
case LEAF_ifHCInBroadcastPkts:
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
goto again;
value->v.counter64 = 0;
break;
case LEAF_ifHCOutOctets:
if (!(ifp->flags & MIBIF_HIGHSPEED))
goto again;
value->v.counter64 = MIBIF_PRIV(ifp)->hc_outoctets;
break;
case LEAF_ifHCOutUcastPkts:
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
goto again;
value->v.counter64 = MIBIF_PRIV(ifp)->hc_opackets -
MIBIF_PRIV(ifp)->hc_omcasts;
break;
case LEAF_ifHCOutMulticastPkts:
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
goto again;
value->v.counter64 = MIBIF_PRIV(ifp)->hc_omcasts;
break;
case LEAF_ifHCOutBroadcastPkts:
if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED)))
goto again;
value->v.counter64 = 0;
break;
case LEAF_ifLinkUpDownTrapEnable:
value->v.integer = ifp->trap_enable ? 1 : 2;
break;
case LEAF_ifHighSpeed:
value->v.integer =
(ifp->mib.ifmd_data.ifi_baudrate + 499999) / 1000000;
break;
case LEAF_ifPromiscuousMode:
value->v.integer =
(ifp->mib.ifmd_flags & IFF_PROMISC) ? 1 : 2;
break;
case LEAF_ifConnectorPresent:
value->v.integer = ifp->has_connector ? 1 : 2;
break;
case LEAF_ifAlias:
ret = string_get(value, "", -1);
break;
case LEAF_ifCounterDiscontinuityTime:
if (ifp->counter_disc > start_tick)
value->v.uint32 = ifp->counter_disc - start_tick;
else
value->v.uint32 = 0;
break;
}
return (ret);
}