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-rw-r--r--apps/snmpnetstat/if.c870
1 files changed, 870 insertions, 0 deletions
diff --git a/apps/snmpnetstat/if.c b/apps/snmpnetstat/if.c
new file mode 100644
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--- /dev/null
+++ b/apps/snmpnetstat/if.c
@@ -0,0 +1,870 @@
+/* $OpenBSD: if.c,v 1.42 2005/03/13 16:05:50 mpf Exp $ */
+/* $NetBSD: if.c,v 1.16.4.2 1996/06/07 21:46:46 thorpej Exp $ */
+
+/*
+ * Copyright (c) 1983, 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ * 3. Neither the name of the University 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 IS PROVIDED BY THE REGENTS 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 THE REGENTS 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.
+ */
+
+#ifdef INHERITED_CODE
+#ifndef lint
+#if 0
+static char sccsid[] = "from: @(#)if.c 8.2 (Berkeley) 2/21/94";
+#else
+static char *rcsid = "$OpenBSD: if.c,v 1.42 2005/03/13 16:05:50 mpf Exp $";
+#endif
+#endif /* not lint */
+#endif
+
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if HAVE_NET_IF_H
+#include <net/if.h>
+#endif
+#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE 1
+#endif
+#ifndef _XOPEN_SOURCE_EXTENDED
+#define _XOPEN_SOURCE_EXTENDED 1
+#endif
+#include <signal.h>
+
+#include "main.h"
+#include "netstat.h"
+
+#define YES 1
+#define NO 0
+
+static void sidewaysintpr(u_int);
+static void timerSet(int interval_seconds);
+static void timerPause(void);
+
+ struct _if_info {
+ char name[128];
+ char ip[128], route[128];
+ int mtu;
+ int drops;
+ unsigned int ifindex;
+ /*
+ * Save "expandable" fields as string values
+ * rather than integer statistics
+ */
+ char s_ipkts[20], s_ierrs[20];
+ char s_opkts[20], s_oerrs[20];
+ char s_ibytes[20], s_obytes[20];
+ char s_outq[20];
+ unsigned long ipkts, opkts; /* Need to combine 2 MIB values */
+ int operstatus;
+/*
+ u_long netmask;
+ struct in_addr ifip, ifroute;
+ */
+ struct _if_info *next;
+ };
+
+
+/*
+ * Retrieve the interface addressing information
+ * XXX - This could also be extended to handle non-IP interfaces
+ */
+void
+_set_address( struct _if_info *cur_if )
+{
+ oid ipaddr_oid[] = { 1,3,6,1,2,1,4,20,1,0 };
+ size_t ipaddr_len = OID_LENGTH( ipaddr_oid );
+ static netsnmp_variable_list *addr_if_var =NULL;
+ static netsnmp_variable_list *addr_mask_var=NULL;
+ netsnmp_variable_list *vp, *vp2;
+ union {
+ in_addr_t addr;
+ char data[4];
+ } tmpAddr;
+ char *cp;
+ in_addr_t ifAddr, mask;
+
+ /*
+ * Note that this information only needs to be retrieved
+ * once, and can be re-used for subsequent calls.
+ */
+ if ( addr_if_var == NULL ) {
+ ipaddr_oid[ 9 ] = 2; /* ipAdEntIfIndex */
+ snmp_varlist_add_variable( &addr_if_var, ipaddr_oid, ipaddr_len,
+ ASN_NULL, NULL, 0);
+ netsnmp_query_walk( addr_if_var, ss );
+
+ ipaddr_oid[ 9 ] = 3; /* ipAdEntNetMask */
+ snmp_varlist_add_variable( &addr_mask_var, ipaddr_oid, ipaddr_len,
+ ASN_NULL, NULL, 0);
+ netsnmp_query_walk( addr_mask_var, ss );
+ }
+
+ /*
+ * Find the address row relevant to this interface
+ */
+ for (vp=addr_if_var, vp2=addr_mask_var; vp;
+ vp=vp->next_variable, vp2=vp2->next_variable) {
+ if ( vp->val.integer && *vp->val.integer == (int)cur_if->ifindex )
+ break;
+ }
+ if (vp2) {
+ /*
+ * Always want a numeric interface IP address
+ */
+ snprintf( cur_if->ip, 128, "%" NETSNMP_PRIo "u.%" NETSNMP_PRIo "u."
+ "%" NETSNMP_PRIo "u.%" NETSNMP_PRIo "u",
+ vp2->name[10],
+ vp2->name[11],
+ vp2->name[12],
+ vp2->name[13]);
+
+ /*
+ * But re-use the routing table utilities/code for
+ * displaying the local network information
+ */
+ cp = tmpAddr.data;
+ cp[0] = vp2->name[ 10 ] & 0xff;
+ cp[1] = vp2->name[ 11 ] & 0xff;
+ cp[2] = vp2->name[ 12 ] & 0xff;
+ cp[3] = vp2->name[ 13 ] & 0xff;
+ ifAddr = tmpAddr.addr;
+ cp = tmpAddr.data;
+ cp[0] = vp2->val.string[ 0 ] & 0xff;
+ cp[1] = vp2->val.string[ 1 ] & 0xff;
+ cp[2] = vp2->val.string[ 2 ] & 0xff;
+ cp[3] = vp2->val.string[ 3 ] & 0xff;
+ mask = tmpAddr.addr;
+ snprintf( cur_if->route, 128, "%s", netname(ifAddr, mask));
+ }
+}
+
+
+/*
+ * Print a description of the network interfaces.
+ */
+void
+intpr(int interval)
+{
+ oid ifcol_oid[] = { 1,3,6,1,2,1,2,2,1,0 };
+ size_t ifcol_len = OID_LENGTH( ifcol_oid );
+
+ struct _if_info *if_head, *if_tail, *cur_if;
+ netsnmp_variable_list *var, *vp;
+ /*
+ * Track maximum field widths, expanding as necessary
+ * This is one reason why results can't be
+ * displayed immediately they are retrieved.
+ */
+ int max_name = 4, max_ip = 7, max_route = 7, max_outq = 5;
+ int max_ipkts = 5, max_ierrs = 5, max_opkts = 5, max_oerrs = 5;
+ int max_ibytes = 6, max_obytes = 6;
+ int i;
+
+
+ if (interval) {
+ sidewaysintpr((unsigned)interval);
+ return;
+ }
+
+ /*
+ * The traditional "netstat -i" output combines information
+ * from two SNMP tables:
+ * ipAddrTable (for the IP address/network)
+ * ifTable (for the interface statistics)
+ *
+ * The previous approach was to retrieve (and save) the
+ * address information first. Then walk the main ifTable,
+ * add the relevant stored addresses, and saving the
+ * full information for each interface, before displaying
+ * the results as a separate pass.
+ *
+ * This code reverses this general structure, by first retrieving
+ * (and storing) the interface statistics for the whole table,
+ * then inserting the address information obtained from the
+ * ipAddrTable, and finally displaying the results.
+ * Such an arrangement should make it easier to extend this
+ * to handle non-IP interfaces (hence not in ipAddrTable)
+ */
+ if_head = NULL;
+ if_tail = NULL;
+ var = NULL;
+
+#define ADD_IFVAR( x ) ifcol_oid[ ifcol_len-1 ] = x; \
+ snmp_varlist_add_variable( &var, ifcol_oid, ifcol_len, ASN_NULL, NULL, 0)
+ ADD_IFVAR( 2 ); /* ifName */
+ ADD_IFVAR( 4 ); /* ifMtu */
+ ADD_IFVAR( 8 ); /* ifOperStatus */
+ /*
+ * The Net/Open-BSD behaviour is to display *either* byte
+ * counts *or* packet/error counts (but not both). FreeBSD
+ * integrates the byte counts into the traditional display.
+ *
+ * The previous 'snmpnetstat' implementation followed the
+ * separatist model. This re-write offers an opportunity
+ * to adopt the (more useful, IMO) Free-BSD approach.
+ *
+ * Or we could perhaps support both styles? :-)
+ */
+ if (bflag || oflag) {
+ ADD_IFVAR( 10 ); /* ifInOctets */
+ ADD_IFVAR( 16 ); /* ifOutOctets */
+ }
+ if (!oflag) {
+ ADD_IFVAR( 11 ); /* ifInUcastPkts */
+ ADD_IFVAR( 12 ); /* ifInNUcastPkts */
+ ADD_IFVAR( 14 ); /* ifInErrors */
+ ADD_IFVAR( 17 ); /* ifOutUcastPkts */
+ ADD_IFVAR( 18 ); /* ifOutNUcastPkts */
+ ADD_IFVAR( 20 ); /* ifOutErrors */
+ ADD_IFVAR( 21 ); /* ifOutQLen */
+ }
+#if 0
+ if (tflag) {
+ ADD_IFVAR( XX ); /* ??? */
+ }
+#endif
+ if (dflag) {
+ ADD_IFVAR( 19 ); /* ifOutDiscards */
+ }
+#undef ADD_IFVAR
+
+ /*
+ * Now walk the ifTable, creating a list of interfaces
+ */
+ while ( 1 ) {
+ if (netsnmp_query_getnext( var, ss ) != SNMP_ERR_NOERROR)
+ break;
+ ifcol_oid[ ifcol_len-1 ] = 2; /* ifDescr */
+ if ( snmp_oid_compare( ifcol_oid, ifcol_len,
+ var->name, ifcol_len) != 0 )
+ break; /* End of Table */
+ cur_if = SNMP_MALLOC_TYPEDEF( struct _if_info );
+ if (!cur_if)
+ break;
+ cur_if->ifindex = var->name[ var->name_length-1 ];
+ for ( vp=var; vp; vp=vp->next_variable ) {
+ if ( ! vp->val.integer )
+ continue;
+ if ( var->name[ var->name_length-1 ] != cur_if->ifindex ) {
+ /*
+ * Inconsistent index information
+ * XXX - Try to recover ?
+ */
+ SNMP_FREE( cur_if );
+ break; /* not for now, no */
+ }
+ switch ( vp->name[ var->name_length-2 ] ) {
+ case 2: /* ifDescr */
+ if (vp->val_len >= sizeof(cur_if->name))
+ vp->val_len = sizeof(cur_if->name)-1;
+ memmove( cur_if->name, vp->val.string, vp->val_len );
+ cur_if->name[vp->val_len] = 0;
+ if ((i = strlen(cur_if->name) + 1) > max_name)
+ max_name = i;
+ break;
+ case 4: /* ifMtu */
+ cur_if->mtu = *vp->val.integer;
+ break;
+ case 8: /* ifOperStatus */
+ cur_if->operstatus = *vp->val.integer;
+ /* XXX - any special processing ?? */
+ break;
+ case 10: /* ifInOctets */
+ sprintf(cur_if->s_ibytes, "%lu", *vp->val.integer);
+ i = strlen(cur_if->s_ibytes);
+ if (i > max_ibytes)
+ max_ibytes = i;
+ break;
+ case 11: /* ifInUcastPkts */
+ cur_if->ipkts += *vp->val.integer;
+ sprintf(cur_if->s_ipkts, "%lu", cur_if->ipkts);
+ i = strlen(cur_if->s_ipkts);
+ if (i > max_ipkts)
+ max_ipkts = i;
+ break;
+ case 12: /* ifInNUcastPkts */
+ cur_if->ipkts += *vp->val.integer;
+ sprintf(cur_if->s_ipkts, "%lu", cur_if->ipkts);
+ i = strlen(cur_if->s_ipkts);
+ if (i > max_ipkts)
+ max_ipkts = i;
+ break;
+ case 14: /* ifInErrors */
+ sprintf(cur_if->s_ierrs, "%lu", *vp->val.integer);
+ i = strlen(cur_if->s_ierrs);
+ if (i > max_ierrs)
+ max_ierrs = i;
+ break;
+ case 16: /* ifOutOctets */
+ sprintf(cur_if->s_obytes, "%lu", *vp->val.integer);
+ i = strlen(cur_if->s_obytes);
+ if (i > max_obytes)
+ max_obytes = i;
+ break;
+ case 17: /* ifOutUcastPkts */
+ cur_if->opkts += *vp->val.integer;
+ sprintf(cur_if->s_opkts, "%lu", cur_if->opkts);
+ i = strlen(cur_if->s_opkts);
+ if (i > max_opkts)
+ max_opkts = i;
+ break;
+ case 18: /* ifOutNUcastPkts */
+ cur_if->opkts += *vp->val.integer;
+ sprintf(cur_if->s_opkts, "%lu", cur_if->opkts);
+ i = strlen(cur_if->s_opkts);
+ if (i > max_opkts)
+ max_opkts = i;
+ break;
+ case 19: /* ifOutDiscards */
+ cur_if->drops = *vp->val.integer;
+ break;
+ case 20: /* ifOutErrors */
+ sprintf(cur_if->s_oerrs, "%lu", *vp->val.integer);
+ i = strlen(cur_if->s_oerrs);
+ if (i > max_oerrs)
+ max_oerrs = i;
+ break;
+ case 21: /* ifOutQLen */
+ sprintf(cur_if->s_outq, "%lu", *vp->val.integer);
+ i = strlen(cur_if->s_outq);
+ if (i > max_outq)
+ max_outq = i;
+ break;
+ }
+ }
+
+ /*
+ * XXX - Perhaps query ifXTable for additional info ??
+ * (ifName/ifAlias, or HC counters)
+ */
+
+ /*
+ * If we're to monitor a particular interface, then
+ * ignore all others. It would be more efficient
+ * to check this earlier (as part of processing
+ * the varbind list). But performing this test here
+ * means we can recognise ifXTable names as well)
+ */
+ if ( intrface && strcmp( cur_if->name, intrface ) != 0) {
+ SNMP_FREE( cur_if );
+ }
+
+ /*
+ * Insert the IP address and network settings, and
+ * add the new _if_stat structure to the list.
+ */
+ if ( cur_if ) {
+ _set_address( cur_if );
+ i = strlen(cur_if->ip);
+ if (i > max_ip)
+ max_ip = i;
+ i = strlen(cur_if->route);
+ if (i > max_route)
+ max_route = i;
+
+ if ( if_tail ) {
+ if_tail->next = cur_if;
+ if_tail = cur_if;
+ } else {
+ if_head = cur_if;
+ if_tail = cur_if;
+ }
+ }
+ } /* while (1) */
+
+ /*
+ * Now display the specified results (in Free-BSD format)
+ * setting the field widths appropriately....
+ */
+ printf("%*.*s %5.5s %*.*s %*.*s",
+ -max_name, max_name, "Name", "Mtu",
+ -max_route, max_route, "Network",
+ -max_ip, max_ip, "Address");
+ if (oflag) {
+ printf(" %*s %*s", max_ibytes, "Ibytes",
+ max_obytes, "Obytes");
+ } else {
+ printf(" %*s %*s", max_ipkts, "Ipkts",
+ max_ierrs, "Ierrs");
+ if (bflag)
+ printf(" %*s", max_ibytes, "Ibytes");
+
+ printf(" %*s %*s", max_opkts, "Opkts",
+ max_oerrs, "Oerrs");
+ if (bflag)
+ printf(" %*s", max_obytes, "Obytes");
+
+ printf(" %*s", max_outq, "Queue");
+ }
+ /* if (tflag)
+ printf(" %s", "Time");
+ */
+ if (dflag)
+ printf(" %s", "Drop");
+ putchar('\n');
+
+ for (cur_if = if_head; cur_if; cur_if=cur_if->next) {
+ if (cur_if->name[0] == 0)
+ continue;
+ printf( "%*.*s %5d", -max_name, max_name, cur_if->name, cur_if->mtu);
+ printf(" %*.*s", -max_route, max_route, cur_if->route);
+ printf(" %*.*s", -max_ip, max_ip, cur_if->ip);
+
+ if (oflag) {
+ printf(" %*s %*s", max_ibytes, cur_if->s_ibytes,
+ max_obytes, cur_if->s_obytes);
+ } else {
+ printf(" %*s %*s", max_ipkts, cur_if->s_ipkts,
+ max_ierrs, cur_if->s_ierrs);
+ if (bflag)
+ printf(" %*s", max_ibytes, cur_if->s_ibytes);
+
+ printf(" %*s %*s", max_opkts, cur_if->s_opkts,
+ max_oerrs, cur_if->s_oerrs);
+ if (bflag)
+ printf(" %*s", max_obytes, cur_if->s_obytes);
+ printf(" %*s", max_outq, cur_if->s_outq);
+ }
+ /* if (tflag)
+ printf(" %4d", cur_if->???);
+ */
+ if (dflag)
+ printf(" %4d", cur_if->drops);
+ putchar('\n');
+ }
+
+ /*
+ * ... and tidy up.
+ */
+ for (cur_if = if_head; cur_if; cur_if=if_head) {
+ if_head=cur_if->next;
+ cur_if->next = NULL;
+ SNMP_FREE( cur_if );
+ }
+}
+
+
+#define MAXIF 100
+struct iftot {
+ char ift_name[128]; /* interface name */
+ int ifIndex;
+ u_long ift_ip; /* input packets */
+ u_long ift_ib; /* input bytes */
+ u_long ift_ie; /* input errors */
+ u_long ift_op; /* output packets */
+ u_long ift_ob; /* output bytes */
+ u_long ift_oe; /* output errors */
+ u_long ift_co; /* collisions */
+ u_long ift_dr; /* drops */
+};
+
+int signalled; /* set if alarm goes off "early" */
+
+/*
+ * Print a running summary of interface statistics.
+ * Repeat display every interval seconds, showing statistics
+ * collected over that interval. Assumes that interval is non-zero.
+ * First line printed at top of screen is always cumulative.
+ */
+static void
+sidewaysintpr(unsigned int interval)
+{
+ /*
+ * As with the "one-shot" interface display, there are
+ * two different possible output formats. The Net/
+ * Open-BSD style displays both information about a
+ * single interface *and* the overall totals.
+ * The equivalent Free-BSD approach is to report on one
+ * or the other (rather than both). This is probably
+ * more useful (IMO), and significantly more efficient.
+ * So that's the style implemented here.
+ *
+ * Note that the 'ifcol' OID buffer can represent a full
+ * instance (including ifIndex), rather than just a
+ * column object OID, as with the one-shot code.
+ */
+ oid ifcol_oid[] = { 1,3,6,1,2,1,2,2,1,0,0 };
+ size_t ifcol_len = OID_LENGTH( ifcol_oid );
+ netsnmp_variable_list *var, *vp;
+ struct iftot *ip = NULL, *cur_if = NULL; /* single I/F display */
+ struct iftot *sum = NULL, *total = NULL; /* overall summary */
+ int line;
+ int first;
+ size_t i;
+
+ var = NULL;
+ if ( intrface ) {
+ /*
+ * Locate the ifIndex of the interface to monitor,
+ * by walking the ifDescr column of the ifTable
+ */
+ ifcol_oid[ ifcol_len-2 ] = 2; /* ifDescr */
+ snmp_varlist_add_variable( &var, ifcol_oid, ifcol_len-1,
+ ASN_NULL, NULL, 0);
+ i = strlen(intrface);
+ netsnmp_query_walk( var, ss );
+ for (vp=var; vp; vp=vp->next_variable) {
+ if (strncmp(intrface, (char *)vp->val.string, i) == 0 &&
+ i == vp->val_len)
+ break; /* found requested interface */
+ }
+ /*
+ * XXX - Might be worth searching ifName/ifAlias as well
+ */
+ if (!vp) {
+ fprintf(stderr, "%s: unknown interface\n", intrface );
+ exit(1);
+ }
+
+ /*
+ * Prepare the current and previous 'iftot' structures,
+ * and set the ifIndex value in the OID buffer.
+ */
+ ip = SNMP_MALLOC_TYPEDEF( struct iftot );
+ cur_if = SNMP_MALLOC_TYPEDEF( struct iftot );
+ if (!ip || !cur_if) {
+ fprintf(stderr, "internal error\n");
+ exit(1);
+ }
+ ifcol_oid[ ifcol_len-1 ] = vp->name[ ifcol_len-1 ];
+ snmp_free_var( var );
+ var = NULL;
+ } else {
+ /*
+ * Prepare the current and previous 'iftot' structures.
+ * (using different pointers, for consistency with *BSD code)
+ */
+ sum = SNMP_MALLOC_TYPEDEF( struct iftot );
+ total = SNMP_MALLOC_TYPEDEF( struct iftot );
+ if (!sum || !total) {
+ fprintf(stderr, "internal error\n");
+ exit(1);
+ }
+ }
+
+ timerSet( interval );
+ first = 1;
+banner:
+ printf( "%17s %14s %16s", "input",
+ intrface ? intrface : "(Total)", "output");
+ putchar('\n');
+ printf( "%10s %5s %10s %10s %5s %10s %5s",
+ "packets", "errs", "bytes", "packets", "errs", "bytes", "colls");
+ if (dflag)
+ printf(" %5.5s", "drops");
+ putchar('\n');
+ fflush(stdout);
+ line = 0;
+loop:
+ if ( intrface ) {
+#define ADD_IFVAR( x ) ifcol_oid[ ifcol_len-2 ] = x; \
+ snmp_varlist_add_variable( &var, ifcol_oid, ifcol_len, ASN_NULL, NULL, 0)
+ /* if (bflag) { */
+ ADD_IFVAR( 10 ); /* ifInOctets */
+ ADD_IFVAR( 16 ); /* ifOutOctets */
+ /* } */
+ ADD_IFVAR( 11 ); /* ifInUcastPkts */
+ ADD_IFVAR( 12 ); /* ifInNUcastPkts */
+ ADD_IFVAR( 14 ); /* ifInErrors */
+ ADD_IFVAR( 17 ); /* ifOutUcastPkts */
+ ADD_IFVAR( 18 ); /* ifOutNUcastPkts */
+ ADD_IFVAR( 20 ); /* ifOutErrors */
+ ADD_IFVAR( 21 ); /* ifOutQLen */
+ if (dflag) {
+ ADD_IFVAR( 19 ); /* ifOutDiscards */
+ }
+#undef ADD_IFVAR
+
+ netsnmp_query_get( var, ss ); /* Or parallel walk ?? */
+ cur_if->ift_ip = 0;
+ cur_if->ift_ib = 0;
+ cur_if->ift_ie = 0;
+ cur_if->ift_op = 0;
+ cur_if->ift_ob = 0;
+ cur_if->ift_oe = 0;
+ cur_if->ift_co = 0;
+ cur_if->ift_dr = 0;
+ cur_if->ifIndex = var->name[ ifcol_len-1 ];
+ for (vp=var; vp; vp=vp->next_variable) {
+ if ( ! vp->val.integer )
+ continue;
+ switch (vp->name[ifcol_len-2]) {
+ case 10: /* ifInOctets */
+ cur_if->ift_ib = *vp->val.integer;
+ break;
+ case 11: /* ifInUcastPkts */
+ cur_if->ift_ip += *vp->val.integer;
+ break;
+ case 12: /* ifInNUcastPkts */
+ cur_if->ift_ip += *vp->val.integer;
+ break;
+ case 14: /* ifInErrors */
+ cur_if->ift_ie = *vp->val.integer;
+ break;
+ case 16: /* ifOutOctets */
+ cur_if->ift_ob = *vp->val.integer;
+ break;
+ case 17: /* ifOutUcastPkts */
+ cur_if->ift_op += *vp->val.integer;
+ break;
+ case 18: /* ifOutNUcastPkts */
+ cur_if->ift_op += *vp->val.integer;
+ break;
+ case 19: /* ifOutDiscards */
+ cur_if->ift_dr = *vp->val.integer;
+ break;
+ case 20: /* ifOutErrors */
+ cur_if->ift_oe = *vp->val.integer;
+ break;
+ case 21: /* ifOutQLen */
+ cur_if->ift_co = *vp->val.integer;
+ break;
+ }
+ }
+ snmp_free_varbind( var );
+ var = NULL;
+
+ if (!first) {
+ printf("%10lu %5lu %10lu %10lu %5lu %10lu %5lu",
+ cur_if->ift_ip - ip->ift_ip,
+ cur_if->ift_ie - ip->ift_ie,
+ cur_if->ift_ib - ip->ift_ib,
+ cur_if->ift_op - ip->ift_op,
+ cur_if->ift_oe - ip->ift_oe,
+ cur_if->ift_ob - ip->ift_ob,
+ cur_if->ift_co - ip->ift_co);
+ if (dflag)
+ printf(" %5lu", cur_if->ift_dr - ip->ift_dr);
+ putchar('\n');
+ fflush(stdout);
+ }
+ ip->ift_ip = cur_if->ift_ip;
+ ip->ift_ie = cur_if->ift_ie;
+ ip->ift_ib = cur_if->ift_ib;
+ ip->ift_op = cur_if->ift_op;
+ ip->ift_oe = cur_if->ift_oe;
+ ip->ift_ob = cur_if->ift_ob;
+ ip->ift_co = cur_if->ift_co;
+ ip->ift_dr = cur_if->ift_dr;
+ } /* (single) interface */
+ else {
+ sum->ift_ip = 0;
+ sum->ift_ib = 0;
+ sum->ift_ie = 0;
+ sum->ift_op = 0;
+ sum->ift_ob = 0;
+ sum->ift_oe = 0;
+ sum->ift_co = 0;
+ sum->ift_dr = 0;
+#define ADD_IFVAR( x ) ifcol_oid[ ifcol_len-2 ] = x; \
+ snmp_varlist_add_variable( &var, ifcol_oid, ifcol_len-1, ASN_NULL, NULL, 0)
+ ADD_IFVAR( 11 ); /* ifInUcastPkts */
+ ADD_IFVAR( 12 ); /* ifInNUcastPkts */
+ ADD_IFVAR( 14 ); /* ifInErrors */
+ ADD_IFVAR( 17 ); /* ifOutUcastPkts */
+ ADD_IFVAR( 18 ); /* ifOutNUcastPkts */
+ ADD_IFVAR( 20 ); /* ifOutErrors */
+ ADD_IFVAR( 21 ); /* ifOutQLen */
+ /* if (bflag) { */
+ ADD_IFVAR( 10 ); /* ifInOctets */
+ ADD_IFVAR( 16 ); /* ifOutOctets */
+ /* } */
+ if (dflag) {
+ ADD_IFVAR( 19 ); /* ifOutDiscards */
+ }
+#undef ADD_IFVAR
+
+ ifcol_oid[ ifcol_len-2 ] = 11; /* ifInUcastPkts */
+ while ( 1 ) {
+ if (netsnmp_query_getnext( var, ss ) != SNMP_ERR_NOERROR)
+ break;
+ if ( snmp_oid_compare( ifcol_oid, ifcol_len-2,
+ var->name, ifcol_len-2) != 0 )
+ break; /* End of Table */
+
+ for ( vp=var; vp; vp=vp->next_variable ) {
+ if ( ! vp->val.integer )
+ continue;
+ switch ( vp->name[ ifcol_len-2 ] ) {
+ case 10: /* ifInOctets */
+ sum->ift_ib += *vp->val.integer;
+ break;
+ case 11: /* ifInUcastPkts */
+ sum->ift_ip += *vp->val.integer;
+ break;
+ case 12: /* ifInNUcastPkts */
+ sum->ift_ip += *vp->val.integer;
+ break;
+ case 14: /* ifInErrors */
+ sum->ift_ie += *vp->val.integer;
+ break;
+ case 16: /* ifOutOctets */
+ sum->ift_ob += *vp->val.integer;
+ break;
+ case 17: /* ifOutUcastPkts */
+ sum->ift_op += *vp->val.integer;
+ break;
+ case 18: /* ifOutNUcastPkts */
+ sum->ift_op += *vp->val.integer;
+ break;
+ case 19: /* ifOutDiscards */
+ sum->ift_dr += *vp->val.integer;
+ break;
+ case 20: /* ifOutErrors */
+ sum->ift_oe += *vp->val.integer;
+ break;
+ case 21: /* ifOutQLen */
+ sum->ift_co += *vp->val.integer;
+ break;
+ }
+ }
+ /*
+ * Now loop to retrieve the next entry from the table.
+ */
+ } /* while (1) */
+
+ snmp_free_varbind( var );
+ var = NULL;
+
+ if (!first) {
+ printf("%10lu %5lu %10lu %10lu %5lu %10lu %5lu",
+ sum->ift_ip - total->ift_ip,
+ sum->ift_ie - total->ift_ie,
+ sum->ift_ib - total->ift_ib,
+ sum->ift_op - total->ift_op,
+ sum->ift_oe - total->ift_oe,
+ sum->ift_ob - total->ift_ob,
+ sum->ift_co - total->ift_co);
+ if (dflag)
+ printf(" %5lu", sum->ift_dr - total->ift_dr);
+ putchar('\n');
+ fflush(stdout);
+ }
+ total->ift_ip = sum->ift_ip;
+ total->ift_ie = sum->ift_ie;
+ total->ift_ib = sum->ift_ib;
+ total->ift_op = sum->ift_op;
+ total->ift_oe = sum->ift_oe;
+ total->ift_ob = sum->ift_ob;
+ total->ift_co = sum->ift_co;
+ total->ift_dr = sum->ift_dr;
+ } /* overall summary */
+
+ timerPause();
+ timerSet(interval);
+ line++;
+ first = 0;
+ if (line == 21)
+ goto banner;
+ else
+ goto loop;
+ /*NOTREACHED*/
+}
+
+
+/*
+ * timerSet sets or resets the timer to fire in "interval" seconds.
+ * timerPause waits only if the timer has not fired.
+ * timing precision is not considered important.
+ */
+
+#if (defined(WIN32) || defined(cygwin))
+static int sav_int;
+static time_t timezup;
+static void
+timerSet(int interval_seconds)
+{
+ sav_int = interval_seconds;
+ timezup = time(0) + interval_seconds;
+}
+
+/*
+ * you can do better than this !
+ */
+static void
+timerPause(void)
+{
+ time_t now;
+ while (time(&now) < timezup)
+#ifdef WIN32
+ Sleep(400);
+#else
+ {
+ struct timeval tx;
+ tx.tv_sec = 0;
+ tx.tv_usec = 400 * 1000; /* 400 milliseconds */
+ select(0, 0, 0, 0, &tx);
+ }
+#endif
+}
+
+#else
+
+/*
+ * Called if an interval expires before sidewaysintpr has completed a loop.
+ * Sets a flag to not wait for the alarm.
+ */
+RETSIGTYPE
+catchalarm(int sig)
+{
+ signalled = YES;
+}
+
+static void
+timerSet(int interval_seconds)
+{
+#ifdef HAVE_SIGSET
+ (void) sigset(SIGALRM, catchalarm);
+#else
+ (void) signal(SIGALRM, catchalarm);
+#endif
+ signalled = NO;
+ (void) alarm(interval_seconds);
+}
+
+static void
+timerPause(void)
+{
+#ifdef HAVE_SIGHOLD
+ sighold(SIGALRM);
+ if (!signalled) {
+ sigpause(SIGALRM);
+ }
+#else
+ int oldmask;
+ oldmask = sigblock(sigmask(SIGALRM));
+ if (!signalled) {
+ sigpause(0);
+ }
+ sigsetmask(oldmask);
+#endif
+}
+
+#endif /* !WIN32 && !cygwin */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-22 02:49:11 +0000