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|
#!@@PERL@@
#
# Wildcard-script to monitor network port usage. To monitor a
# port, link port_<service> to this file. E.g.
#
# ln -s /usr/share/munin/node/plugins-auto/port_ /etc/munin/node.d/port_www
#
# ...will monitor www connections. Services are those listed in
# /etc/services.
#
# Parameters:
#
# config (required)
# autoconf (optional - used by munin-config)
# suggest (optional - used by munin-config)
#
# $Log$
# Revision 1.2 2004/05/20 13:57:12 jimmyo
# Set categories to some of the plugins.
#
# Revision 1.1 2004/01/02 18:50:01 jimmyo
# Renamed occurrances of lrrd -> munin
#
# Revision 1.1.1.1 2004/01/02 15:18:07 jimmyo
# Import of LRRD CVS tree after renaming to Munin
#
# Revision 1.4 2003/12/16 16:22:36 jimmyo
# Typo fix.
#
# Revision 1.3 2003/11/07 17:43:16 jimmyo
# Cleanups and log entries
#
#
#
# Magic markers (optional - used by munin-config and some installation
# scripts):
#%# family=manual
#%# capabilities=autoconf suggest
if ($ARGV[0] and $ARGV[0] =~ /^\s*autoconf\s*$/i)
{
if (-r "/proc/net/tcp" or -r "/proc/net/tcp6")
{
print "yes\n";
exit 0;
}
else
{
print "no\n";
exit 1;
}
}
if ($ARGV[0] and $ARGV[0] =~ /^\s*suggest\s*$/i)
{
if (-r "/proc/net/tcp" or -r "/proc/net/tcp6")
{
my %ports = ();
if (-r "/proc/net/tcp")
{
open (NETSTAT, "/proc/net/tcp") or exit 1;
while (<NETSTAT>)
{
chomp;
next unless (hex (substr($_,35,2)) == 10);
my $p = substr( $_,15,4);
if (defined $ports{hex($p)})
{
$ports{hex($p)}++;
}
else
{
$ports{hex($p)} = 1;
}
}
close NETSTAT;
}
if (-r "/proc/net/tcp6")
{
open (NETSTAT, "/proc/net/tcp6") or exit 1;
while (<NETSTAT>)
{
chomp;
next unless (hex (substr($_,83,2)) == 10);
my $p = substr( $_,40,4);
if (defined $ports{hex($p)})
{
$ports{hex($p)}++;
}
else
{
$ports{hex($p)} = 1;
}
}
close NETSTAT;
}
foreach my $port (keys %ports)
{
my $p = (getservbyport ($port, "tcp"))[0];
if ($p)
{
print "$p\n";
}
else
{
print "$port\n";
}
}
exit 0;
}
else
{
exit 1;
}
}
$0 =~ /port_(.+)*$/;
unless ($name = $1)
{
exit 2;
}
if ($ARGV[0] and $ARGV[0] =~ /^\s*config\s*$/i)
{
if(int($name)) {
print "graph_title TCP port $name connection count\n";
} else {
print "graph_title $name connection count\n";
}
print "graph_args --base 1000 -l 0\n";
print "graph_vlabel concurrent connections\n";
print "graph_category network\n";
print "count.label $name\n";
exit 0;
}
if ($name =~ /\D/)
{
$port = (getservbyname ($name, "tcp"))[2];
}
else
{
$port = $name;
}
$count = 0;
if (-r "/proc/net/tcp")
{
open (NETSTAT, "/proc/net/tcp") or exit 1;
while (<NETSTAT>)
{
chomp;
next unless (hex (substr($_,35,2)) == 1);
my $p = substr( $_,15,4);
$count++ if hex($p) == $port;
}
close NETSTAT;
}
if (-r "/proc/net/tcp6")
{
open (NETSTAT, "/proc/net/tcp6") or exit 1;
while (<NETSTAT>)
{
chomp;
next unless (hex (substr($_,83,2)) == 1);
my $p = substr( $_,40,4);
$count++ if hex($p) == $port;
}
close NETSTAT;
}
print "count.value $count\n";
# vim:syntax=perl
|
