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#!/usr/bin/perl -w
#
# Small sample application for table walking
#
# Given a router name and SNMP community string, traverse the RFC1213
# ifTable and write a message for each interface whose ifOperStatus
# differs from the ifAdminStatus.
require 5.003;
use strict;
use lib qw(/opt/www/cgi-bin/cug/switch/snmp);
use BER;
use SNMP_Session;
use CGI qw(:html2 :html3);
### Forward declarations
sub out_interface ($$$$$ );
sub usage ();
sub print_html_header ($ );
sub print_html_trailer ();
my $output_mode = 'text';
my $have_html_header = 0;
my ($host, $community);
my $query;
my $version;
if (defined $ENV{'REQUEST_METHOD'}) {
$output_mode = 'html';
$query = new CGI;
$host = $query->param ('host');
$community = $query->param ('community');
print $query->header;
} else {
my $arg;
while (defined $ARGV[0] and $ARGV[0] =~ /^-/) {
if ($ARGV[0] =~ /^-v/) {
if ($ARGV[0] eq '-v') {
shift @ARGV;
usage () unless defined $ARGV[0];
} else {
$ARGV[0] = substr($ARGV[0], 2);
}
if ($ARGV[0] eq '1') {
$version = '1';
} elsif ($ARGV[0] eq '2c' or $ARGV[0] eq '2') {
$version = '2c';
} else {
usage ();
}
} elsif ($arg eq '-html') {
$output_mode = 'html';
} else {
usage ();
}
shift @ARGV;
}
$host = shift @ARGV || die;
$community = shift @ARGV || die;
}
my $ifDescr = [1,3,6,1,2,1,2,2,1,2];
my $ifAdminStatus = [1,3,6,1,2,1,2,2,1,7];
my $ifOperStatus = [1,3,6,1,2,1,2,2,1,8];
my $locIfDescr = [1,3,6,1,4,1,9,2,2,1,1,28];
my $the_router;
sub out_interface ($$$$$) {
my ($index, $descr, $admin, $oper, $comment) = @_;
grep (defined $_ && ($_=pretty_print $_),
($descr, $admin, $oper, $comment));
return if defined $admin && $admin == 2;
return if defined $admin && defined $oper && $admin == $oper;
my $admin_string = $admin ? ($admin == 1 ? 'up' : ($admin == 2 ? 'down' : "?($admin)")) : "?";
my $oper_string = $oper ? ($oper == 1 ? 'up' : ($oper == 2 ? 'down' : "?($oper)")) : "?";
$comment = '' unless defined $comment;
if ($output_mode eq 'text') {
printf "%2d %-20s %10s %10s %s\n",
$index, $descr, $admin_string, $oper_string,
defined $comment ? $comment : '';
} elsif ($output_mode eq 'html') {
print_html_header ($the_router), $have_html_header = 1
unless $have_html_header;
print TR(th($index),
td(CGI->escapeHTML($descr)),
td({align=>'center'},$admin_string),
td({align=>'center'},$oper_string),
td(CGI->escapeHTML($comment))),"\n";
}
}
$the_router = $host;
my $session =
($version eq '1' ? SNMPv1_Session->open ($host, $community, 161)
: $version eq '2c' ? SNMPv2c_Session->open ($host, $community, 161)
: die "Unknown SNMP version $version")
|| die "Opening SNMP_Session";
$session->map_table ([$ifDescr,$ifAdminStatus,$ifOperStatus,$locIfDescr],
\&out_interface);
if ($output_mode eq 'html' && $have_html_header) {
print_html_trailer ();
}
1;
sub usage () {
die "Usage: $0 [-html] hostname community";
}
sub print_html_header ($ ) {
my ($router) = @_;
print "<html>\n";
print head(title("Interface Listing for ".$router)),"\n";
print " <BODY BGCOLOR=\"#ffffff\">\n",
h1("Interface Listing for ".tt($router)),"\n",
" <TABLE>\n",
TR(th("index"),
th("descr"),
th("admin"),
th("oper"),
th("description"));
}
sub print_html_trailer () {
print " </table>\n </body>\n</html>\n";
}
