/* * Copyright (c) 2001-2003 * Fraunhofer Institute for Open Communication Systems (FhG Fokus). * All rights reserved. * * Author: Harti Brandt * * 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 1.15 2005/05/23 09:03:39 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: value->v.integer = (ifp->mib.ifmd_flags & IFF_RUNNING) ? 1 : 2; 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 = ifp->hc_inoctets; break; case LEAF_ifHCInUcastPkts: if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED))) goto again; value->v.counter64 = ifp->hc_ipackets - ifp->hc_imcasts; break; case LEAF_ifHCInMulticastPkts: if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED))) goto again; value->v.counter64 = 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 = ifp->hc_outoctets; break; case LEAF_ifHCOutUcastPkts: if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED))) goto again; value->v.counter64 = ifp->hc_opackets - ifp->hc_omcasts; break; case LEAF_ifHCOutMulticastPkts: if (!(ifp->flags & (MIBIF_VERYHIGHSPEED|MIBIF_HIGHSPEED))) goto again; value->v.counter64 = 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); }