239 lines
7.0 KiB
C
239 lines
7.0 KiB
C
/*
|
|
* Copyright (c) 2001-2003
|
|
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
|
|
* All rights reserved.
|
|
*
|
|
* Author: Harti Brandt <harti@freebsd.org>
|
|
*
|
|
* Redistribution of this software and documentation 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 or documentation 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.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY FRAUNHOFER FOKUS
|
|
* AND ITS 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
|
|
* FRAUNHOFER FOKUS OR ITS 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.h,v 1.12 2003/12/03 10:01:19 hbb Exp $
|
|
*
|
|
* Implementation of the interfaces and IP groups of MIB-II.
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/time.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <err.h>
|
|
#include <ctype.h>
|
|
#include <net/if.h>
|
|
#include <net/if_dl.h>
|
|
#include <net/if_mib.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
|
|
#include "asn1.h"
|
|
#include "snmp.h"
|
|
#include "snmpmod.h"
|
|
#include "snmp_mibII.h"
|
|
#include "mibII_tree.h"
|
|
|
|
|
|
/*
|
|
* Interface list and flags.
|
|
*/
|
|
TAILQ_HEAD(mibif_list, mibif);
|
|
enum {
|
|
MIBIF_FOUND = 0x0001,
|
|
MIBIF_HIGHSPEED = 0x0002,
|
|
MIBIF_VERYHIGHSPEED = 0x0004,
|
|
};
|
|
#define hc_inoctets mib.ifmd_data.ifi_ibytes
|
|
#define hc_outoctets mib.ifmd_data.ifi_obytes
|
|
#define hc_omcasts mib.ifmd_data.ifi_omcasts
|
|
#define hc_opackets mib.ifmd_data.ifi_opackets
|
|
#define hc_imcasts mib.ifmd_data.ifi_imcasts
|
|
#define hc_ipackets mib.ifmd_data.ifi_ipackets
|
|
|
|
/*
|
|
* Interface addresses.
|
|
*/
|
|
TAILQ_HEAD(mibifa_list, mibifa);
|
|
enum {
|
|
MIBIFA_FOUND = 0x0001,
|
|
MIBIFA_DESTROYED = 0x0002,
|
|
};
|
|
|
|
/*
|
|
* Receive addresses
|
|
*/
|
|
TAILQ_HEAD(mibrcvaddr_list, mibrcvaddr);
|
|
enum {
|
|
MIBRCVADDR_FOUND = 0x00010000,
|
|
};
|
|
|
|
/*
|
|
* Interface index mapping. The problem here is, that if the same interface
|
|
* is reinstantiated (for examble by unloading and loading the hardware driver)
|
|
* we must use the same index for this interface. For dynamic interfaces
|
|
* (clip, lane) we must use a fresh index, each time a new interface is created.
|
|
* To differentiate between these types of interfaces we use the following table
|
|
* which contains an entry for each dynamic interface type. All other interface
|
|
* types are supposed to be static. The mibindexmap contains an entry for
|
|
* all interfaces. The mibif pointer is NULL, if the interface doesn't exist
|
|
* anymore.
|
|
*/
|
|
struct mibdynif {
|
|
SLIST_ENTRY(mibdynif) link;
|
|
char name[IFNAMSIZ];
|
|
};
|
|
SLIST_HEAD(mibdynif_list, mibdynif);
|
|
|
|
struct mibindexmap {
|
|
STAILQ_ENTRY(mibindexmap) link;
|
|
u_short sysindex;
|
|
u_int ifindex;
|
|
struct mibif *mibif; /* may be NULL */
|
|
char name[IFNAMSIZ];
|
|
};
|
|
STAILQ_HEAD(mibindexmap_list, mibindexmap);
|
|
|
|
/*
|
|
* Interface stacking. The generic code cannot know how the interfaces stack.
|
|
* For this reason it instantiates only the x.0 and 0.x table elements. All
|
|
* others have to be instantiated by the interface specific modules.
|
|
* The table is read-only.
|
|
*/
|
|
struct mibifstack {
|
|
TAILQ_ENTRY(mibifstack) link;
|
|
struct asn_oid index;
|
|
};
|
|
TAILQ_HEAD(mibifstack_list, mibifstack);
|
|
|
|
/*
|
|
* NetToMediaTable (ArpTable)
|
|
*/
|
|
struct mibarp {
|
|
TAILQ_ENTRY(mibarp) link;
|
|
struct asn_oid index; /* contains both the ifindex and addr */
|
|
u_char phys[128]; /* the physical address */
|
|
u_int physlen; /* and its length */
|
|
u_int flags;
|
|
};
|
|
TAILQ_HEAD(mibarp_list, mibarp);
|
|
enum {
|
|
MIBARP_FOUND = 0x00010000,
|
|
MIBARP_PERM = 0x00000001,
|
|
};
|
|
|
|
/*
|
|
* New if registrations
|
|
*/
|
|
struct newifreg {
|
|
TAILQ_ENTRY(newifreg) link;
|
|
const struct lmodule *mod;
|
|
int (*func)(struct mibif *);
|
|
};
|
|
TAILQ_HEAD(newifreg_list, newifreg);
|
|
|
|
/* list of all IP addresses */
|
|
extern struct mibifa_list mibifa_list;
|
|
|
|
/* list of all interfaces */
|
|
extern struct mibif_list mibif_list;
|
|
|
|
/* list of dynamic interface names */
|
|
extern struct mibdynif_list mibdynif_list;
|
|
|
|
/* list of all interface index mappings */
|
|
extern struct mibindexmap_list mibindexmap_list;
|
|
|
|
/* list of all stacking entries */
|
|
extern struct mibifstack_list mibifstack_list;
|
|
|
|
/* list of all receive addresses */
|
|
extern struct mibrcvaddr_list mibrcvaddr_list;
|
|
|
|
/* list of all NetToMedia entries */
|
|
extern struct mibarp_list mibarp_list;
|
|
|
|
/* number of interfaces */
|
|
extern int32_t mib_if_number;
|
|
|
|
/* last change of interface table */
|
|
extern u_int32_t mib_iftable_last_change;
|
|
|
|
/* last change of stack table */
|
|
extern u_int32_t mib_ifstack_last_change;
|
|
|
|
/* if this is set, one of our lists may be bad. refresh them when idle */
|
|
extern int mib_iflist_bad;
|
|
|
|
/* last time refreshed */
|
|
extern u_int32_t mibarpticks;
|
|
|
|
/* info on system clocks */
|
|
extern struct clockinfo clockinfo;
|
|
|
|
/* get interfaces and interface addresses. */
|
|
void mib_fetch_interfaces(void);
|
|
|
|
/* check whether this interface(type) is dynamic */
|
|
int mib_if_is_dyn(const char *name);
|
|
|
|
/* destroy an interface address */
|
|
int mib_destroy_ifa(struct mibifa *);
|
|
|
|
/* restituate a deleted interface address */
|
|
void mib_undestroy_ifa(struct mibifa *);
|
|
|
|
/* change interface address */
|
|
int mib_modify_ifa(struct mibifa *);
|
|
|
|
/* undo if address modification */
|
|
void mib_unmodify_ifa(struct mibifa *);
|
|
|
|
/* create an interface address */
|
|
struct mibifa * mib_create_ifa(u_int ifindex, struct in_addr addr, struct in_addr mask, struct in_addr bcast);
|
|
|
|
/* delete a freshly created address */
|
|
void mib_uncreate_ifa(struct mibifa *);
|
|
|
|
/* create/delete arp entries */
|
|
struct mibarp *mib_arp_create(const struct mibif *, struct in_addr, const u_char *, size_t);
|
|
void mib_arp_delete(struct mibarp *);
|
|
|
|
/* find arp entry */
|
|
struct mibarp *mib_find_arp(const struct mibif *, struct in_addr);
|
|
|
|
/* update arp table */
|
|
void mib_arp_update(void);
|
|
|
|
/* fetch routing table */
|
|
u_char *mib_fetch_rtab(int af, int info, int arg, size_t *lenp);
|
|
|
|
/* extract addresses from routing message */
|
|
void mib_extract_addrs(int, u_char *, struct sockaddr **);
|