+++ /dev/null
-/*****************************************************************
- Copyright 1989, 1991, 1992 by Carnegie Mellon University
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of CMU not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-******************************************************************/
-/*
- * Copyright (c) 1983,1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that this notice is preserved and that due credit is given
- * to the University of California at Berkeley. The name of the University
- * may not be used to endorse or promote products derived from this
- * software without specific prior written permission. This software
- * is provided ``as is'' without express or implied warranty.
- */
-
-#include <net-snmp/net-snmp-config.h>
-
-#if HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_STRING_H
-#include <string.h>
-#else
-#include <strings.h>
-#endif
-
-#include <stdio.h>
-#include <ctype.h>
-
-#if HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-
-#if HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif
-#if HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#if HAVE_ARPA_INET_H
-#include <arpa/inet.h>
-#endif
-#define LOOPBACKNET 127
-
-#if HAVE_WINSOCK_H
-#include <winsock.h>
-#include "winstub.h"
-#endif
-#if HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#if HAVE_NETDB_H
-#include <netdb.h>
-#endif
-
-#include "main.h"
-#include <net-snmp/net-snmp-includes.h>
-#include "netstat.h"
-
-struct route_entry {
- oid instance[4];
- struct in_addr destination;
- int set_destination;
- struct in_addr mask;
- int set_mask;
- struct in_addr gateway;
- int set_gateway;
- int ifNumber;
- int set_ifNumber;
- int type;
- int set_type;
- int proto;
- int set_proto;
- char ifname[64];
- int set_name;
-};
-
-#define RTDEST 1
-#define RTIFINDEX 2
-#define RTNEXTHOP 7
-#define RTTYPE 8
-#define RTPROTO 9
-#define RTMASK 11
-
-static oid oid_rttable[] = { 1, 3, 6, 1, 2, 1, 4, 21, 1 };
-static oid oid_rtdest[] = { 1, 3, 6, 1, 2, 1, 4, 21, 1, 1 };
-static oid oid_rtifindex[] = { 1, 3, 6, 1, 2, 1, 4, 21, 1, 2 };
-static oid oid_rtnexthop[] = { 1, 3, 6, 1, 2, 1, 4, 21, 1, 7 };
-static oid oid_rttype[] = { 1, 3, 6, 1, 2, 1, 4, 21, 1, 8 };
-static oid oid_rtproto[] = { 1, 3, 6, 1, 2, 1, 4, 21, 1, 9 };
-static oid oid_rtmask[] = { 1, 3, 6, 1, 2, 1, 4, 21, 1, 11 };
-static oid oid_ifdescr[] = { 1, 3, 6, 1, 2, 1, 2, 2, 1, 2 };
-static oid oid_ipnoroutes[] = { 1, 3, 6, 1, 2, 1, 4, 12, 0 };
-
-
-/*
- * Print routing tables.
- */
-void
-routepr(void)
-{
- struct route_entry route, *rp = &route;
- netsnmp_pdu *request, *response;
- netsnmp_variable_list *vp;
- char name[16], *flags;
- oid *instance, type;
- int toloopback, status;
- char ch;
-
- printf("Routing tables\n");
- printf("%-26.26s %-18.18s %-6.6s %s\n",
- "Destination", "Gateway", "Flags", "Interface");
-
-
- request = snmp_pdu_create(SNMP_MSG_GETNEXT);
-
- snmp_add_null_var(request, oid_rtdest,
- sizeof(oid_rtdest) / sizeof(oid));
- snmp_add_null_var(request, oid_rtmask,
- sizeof(oid_rtmask) / sizeof(oid));
- snmp_add_null_var(request, oid_rtifindex,
- sizeof(oid_rtifindex) / sizeof(oid));
- snmp_add_null_var(request, oid_rtnexthop,
- sizeof(oid_rtnexthop) / sizeof(oid));
- snmp_add_null_var(request, oid_rttype,
- sizeof(oid_rttype) / sizeof(oid));
- snmp_add_null_var(request, oid_rtproto,
- sizeof(oid_rtproto) / sizeof(oid));
-
- while (request) {
- status = snmp_synch_response(Session, request, &response);
- if (status != STAT_SUCCESS
- || response->errstat != SNMP_ERR_NOERROR) {
- fprintf(stderr, "SNMP request failed\n");
- break;
- }
- instance = NULL;
- request = NULL;
- rp->set_destination = 0;
- rp->set_mask = 0;
- rp->set_ifNumber = 0;
- rp->set_gateway = 0;
- rp->set_type = 0;
- rp->set_proto = 0;
- for (vp = response->variables; vp; vp = vp->next_variable) {
- if (vp->name_length != 14 ||
- memcmp(vp->name, oid_rttable, sizeof(oid_rttable))) {
- continue; /* if it isn't in this subtree, just continue */
- }
-
- if (instance != NULL) {
- oid *ip, *op;
- int count;
-
- ip = instance;
- op = vp->name + 10;
- for (count = 0; count < 4; count++) {
- if (*ip++ != *op++)
- break;
- }
- if (count < 4)
- continue; /* not the right instance, ignore */
- } else {
- instance = vp->name + 10;
- }
- /*
- * At this point, this variable is known to be in the routing table
- * subtree, and is of the right instance for this transaction.
- */
-
- if (request == NULL)
- request = snmp_pdu_create(SNMP_MSG_GETNEXT);
- snmp_add_null_var(request, vp->name, vp->name_length);
-
- type = vp->name[9];
- switch ((char) type) {
- case RTDEST:
- memmove(&rp->destination, vp->val.string, sizeof(u_long));
- rp->set_destination = 1;
- break;
- case RTMASK:
- memmove(&rp->mask, vp->val.string, sizeof(u_long));
- rp->set_mask = 1;
- break;
- case RTIFINDEX:
- rp->ifNumber = *vp->val.integer;
- rp->set_ifNumber = 1;
- break;
- case RTNEXTHOP:
- memmove(&rp->gateway, vp->val.string, sizeof(u_long));
- rp->set_gateway = 1;
- break;
- case RTTYPE:
- rp->type = *vp->val.integer;
- rp->set_type = 1;
- break;
- case RTPROTO:
- rp->proto = *vp->val.integer;
- rp->set_proto = 1;
- break;
- }
- }
- snmp_free_pdu(response);
- if (!(rp->set_destination && rp->set_gateway
- && rp->set_type && rp->set_ifNumber)) {
- if (request)
- snmp_free_pdu(request);
- request = NULL;
- continue;
- }
- toloopback = *(char *) &rp->gateway == LOOPBACKNET;
- printf("%-26.26s ",
- (rp->destination.s_addr == INADDR_ANY) ? "default" :
- (toloopback) ? routename(rp->destination) :
- rp->set_mask ? netname(rp->destination, rp->mask.s_addr) :
- netname(rp->destination, 0L));
- printf("%-18.18s ", routename(rp->gateway));
- flags = name;
- *flags++ = 'U'; /* route is in use */
- /*
- * this !toloopback shouldnt be necessary
- */
- if (!toloopback && rp->type == MIB_IPROUTETYPE_REMOTE)
- *flags++ = 'G';
- if (toloopback)
- *flags++ = 'H';
- if (rp->proto == MIB_IPROUTEPROTO_ICMP)
- *flags++ = 'D'; /* redirect */
- *flags = '\0';
- printf("%-6.6s ", name);
- get_ifname(rp->ifname, rp->ifNumber);
- ch = rp->ifname[strlen(rp->ifname) - 1];
- ch = '5'; /* force the if statement */
- if (isdigit(ch))
- printf(" %.32s\n", rp->ifname);
- else
- printf(" %.32s%d\n", rp->ifname, rp->ifNumber);
-
- }
-}
-
-struct iflist {
- int index;
- char name[64];
- struct iflist *next;
-} *Iflist = NULL;
-
-void
-get_ifname(char *name, int ifIndex)
-{
- netsnmp_pdu *pdu, *response;
- netsnmp_variable_list *vp;
- struct iflist *ip;
- oid varname[MAX_OID_LEN];
- int status;
-
- for (ip = Iflist; ip; ip = ip->next) {
- if (ip->index == ifIndex)
- break;
- }
- if (ip) {
- strcpy(name, ip->name);
- return;
- }
- ip = (struct iflist *) malloc(sizeof(struct iflist));
- if (ip == NULL)
- return;
- ip->next = Iflist;
- Iflist = ip;
- ip->index = ifIndex;
- pdu = snmp_pdu_create(SNMP_MSG_GET);
- memmove(varname, oid_ifdescr, sizeof(oid_ifdescr));
- varname[10] = (oid) ifIndex;
- snmp_add_null_var(pdu, varname, sizeof(oid_ifdescr) / sizeof(oid) + 1);
- status = snmp_synch_response(Session, pdu, &response);
- if (status == STAT_SUCCESS && response->errstat == SNMP_ERR_NOERROR) {
- vp = response->variables;
- if (vp->val_len >= sizeof(ip->name))
- vp->val_len = sizeof(ip->name) - 1;
- memmove(ip->name, vp->val.string, vp->val_len);
- ip->name[vp->val_len] = '\0';
- snmp_free_pdu(response);
- } else {
- sprintf(ip->name, "if%d", ifIndex);
- }
- strcpy(name, ip->name);
-}
-
-static u_long
-forgemask(u_long a)
-{
- u_long m;
- if (IN_CLASSA(a))
- m = IN_CLASSA_NET;
- else if (IN_CLASSB(a))
- m = IN_CLASSB_NET;
- else
- m = IN_CLASSC_NET;
- return m;
-}
-
-static void
-domask(char *dst, u_long addr, u_long mask)
-{
- int b, i;
- if (!mask || forgemask(addr) == mask) {
- *dst = '\0';
- return;
- }
- i = 0;
- for (b = 0; b < 32; b++)
- if (mask & (1 << b)) {
- int bb;
- i = b;
- for (bb = b + 1; bb < 32; bb++)
- if (!(mask & (1 << bb))) {
- i = -1; /* non-contig */
- break;
- }
- break;
- }
- if (i == -1)
- sprintf(dst, "&0x%lx", mask);
- else
- sprintf(dst, "/%d", 32 - i);
-}
-
-char *
-routename(struct in_addr in)
-{
- register char *cp;
- static char line[MAXHOSTNAMELEN + 1];
- struct hostent *hp;
- static char domain[MAXHOSTNAMELEN + 1];
- static int first = 1;
-
- if (first) {
- first = 0;
- if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
- (cp = (char *) strchr(domain, '.')))
- (void) strcpy(domain, cp + 1);
- else
- domain[0] = 0;
- }
- cp = 0;
- if (!nflag) {
- hp = gethostbyaddr((char *) &in, sizeof(struct in_addr), AF_INET);
- if (hp) {
- if ((cp = (char *) strchr(hp->h_name, '.')) &&
- !strcmp(cp + 1, domain))
- *cp = 0;
- cp = (char *) hp->h_name;
- }
- }
- if (cp)
- strncpy(line, cp, sizeof(line) - 1);
- else {
-#define C(x) (unsigned)((x) & 0xff)
- in.s_addr = ntohl(in.s_addr);
- sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
- C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
- }
- return (line);
-}
-
-/*
- * Return the name of the network whose address is given.
- * The address is assumed to be that of a net or subnet, not a host.
- */
-char *
-netname(struct in_addr in, u_long mask)
-{
- char *cp = NULL;
- static char line[MAXHOSTNAMELEN + 1];
- struct netent *np = 0;
- u_long net, omask;
- u_long i;
- int subnetshift;
-
- i = ntohl(in.s_addr);
- omask = mask = ntohl(mask);
- if (!nflag && i != INADDR_ANY) {
- if (mask == INADDR_ANY) {
- if (IN_CLASSA(i)) {
- mask = IN_CLASSA_NET;
- subnetshift = 8;
- } else if (IN_CLASSB(i)) {
- mask = IN_CLASSB_NET;
- subnetshift = 8;
- } else {
- mask = IN_CLASSC_NET;
- subnetshift = 4;
- }
- /*
- * If there are more bits than the standard mask
- * would suggest, subnets must be in use.
- * Guess at the subnet mask, assuming reasonable
- * width subnet fields.
- */
- while (i & ~mask)
- mask = (long) mask >> subnetshift;
- }
- net = i & mask;
- while ((mask & 1) == 0)
- mask >>= 1, net >>= 1;
- np = getnetbyaddr(net, AF_INET);
- if (np)
- cp = np->n_name;
- }
- if (cp)
- strncpy(line, cp, sizeof(line) - 1);
- else if ((i & 0xffffff) == 0)
- sprintf(line, "%u", C(i >> 24));
- else if ((i & 0xffff) == 0)
- sprintf(line, "%u.%u", C(i >> 24), C(i >> 16));
- else if ((i & 0xff) == 0)
- sprintf(line, "%u.%u.%u", C(i >> 24), C(i >> 16), C(i >> 8));
- else
- sprintf(line, "%u.%u.%u.%u", C(i >> 24),
- C(i >> 16), C(i >> 8), C(i));
- domask(line + strlen(line), i, omask);
- return (line);
-}
-
-/*
- * Print routing statistics
- */
-void
-rt_stats(void)
-{
- netsnmp_variable_list *var;
-
- printf("routing:\n");
- var =
- getvarbyname(Session, oid_ipnoroutes,
- sizeof(oid_ipnoroutes) / sizeof(oid));
- if (var) {
- printf("\t%lu destination%s found unreachable\n",
- *var->val.integer, plural((int) *var->val.integer));
- snmp_free_var(var);
- } else {
- printf("\tCouldn't get ipOutNoRoutes variable\n");
- }
-}
-
-/*
- * Request a variable with a GET REQUEST message on the given
- * session. If the variable is found, a
- * pointer to a netsnmp_variable_list object will be returned.
- * Otherwise, NULL is returned. The caller must free the returned
- * variable_list object when done with it.
- */
-netsnmp_variable_list *
-getvarbyname(netsnmp_session * sp, oid * name, size_t len)
-{
- netsnmp_pdu *request, *response;
- netsnmp_variable_list *var = NULL, *vp;
- int status;
-
- request = snmp_pdu_create(SNMP_MSG_GET);
-
- snmp_add_null_var(request, name, len);
-
- status = snmp_synch_response(sp, request, &response);
-
- if (status == STAT_SUCCESS) {
- if (response->errstat == SNMP_ERR_NOERROR) {
- for (var = response->variables; var; var = var->next_variable) {
- if (var->name_length == len
- && !memcmp(name, var->name, len * sizeof(oid)))
- break; /* found our match */
- }
- if (var != NULL) {
- /*
- * Now unlink this var from pdu chain so it doesn't get freed.
- * The caller will free the var.
- */
- if (response->variables == var) {
- response->variables = var->next_variable;
- } else {
- for (vp = response->variables; vp;
- vp = vp->next_variable) {
- if (vp->next_variable == var) {
- vp->next_variable = var->next_variable;
- break;
- }
- }
- }
- if (var->type == SNMP_NOSUCHOBJECT ||
- var->type == SNMP_NOSUCHINSTANCE ||
- var->type == SNMP_ENDOFMIBVIEW) {
- snmp_free_var(var);
- var = NULL;
- }
- }
- }
- } else if (status != STAT_TIMEOUT)
- snmp_sess_perror("snmpnetstat", sp);
- if (response)
- snmp_free_pdu(response);
- return var;
-}
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