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|
#!/usr/bin/perl
# Module Vyatta::Interface.pm
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2008 Vyatta, Inc.
# All Rights Reserved.
# **** End License ****
package Vyatta::Interface;
use strict;
use warnings;
use Vyatta::Config;
use constant {
IFF_UP => 0x1,
IFF_RUNNING => 0x40,
};
my %net_prefix = (
'adsl[\d]+' => { path => 'adsl',
vif => 'vif', },
'bond[\d]+' => { path => 'bonding',
vif => 'vif', },
'br[\d]+' => { path => 'bridge',
vif => 'vif' },
'eth[\d]+' => { path => 'ethernet',
vif => 'vif', },
'lo' => { path => 'loopback' },
'ml[\d]+' => { path => 'multilink',
vif => 'vif', },
'vtun[\d]+]' => { path => 'openvpn' },
'wan[\d]+' => {
path => 'serial',
vif => ( 'cisco-hdlc vif', 'ppp vif', 'frame-relay vif' ),
},
'tun[\d]+' => { path => 'tunnel' },
'wlm[\d]+' => { path => 'wireless-modem' },
);
sub new {
my $that = shift;
my $name = pop;
my $class = ref($that) || $that;
my ($dev, $vif);
# Strip off vif from name
if ( $name =~ m/(\w)+\.(\d)+/ ) {
$dev = $1;
$vif = $2;
} else {
$dev = $name;
}
foreach my $prefix (keys %net_prefix) {
next unless $dev =~ /$prefix/;
my $path = $net_prefix{$prefix}{path};
my $vifpath = $net_prefix{$prefix}{vif};
# Interface name has vif, but this type doesn't support vif!
return if ( $vif && !$vifpath );
# Check path if given
return if ( $#_ >= 0 && join( ' ', @_ ) ne $path );
$path = "interfaces $path $dev";
$path .= " $vifpath $vif" if $vif;
my $self = {
name => $name,
path => $path,
dev => $dev,
vif => $vif,
};
bless $self, $class;
return $self;
}
return; # nothing
}
## Field accessors
sub name {
my $self = shift;
return $self->{name};
}
sub path {
my $self = shift;
return $self->{path};
}
sub vif {
my $self = shift;
return $self->{vif};
}
sub physicalDevice {
my $self = shift;
return $self->{dev};
}
## Configuration checks
sub configured {
my $self = shift;
my $config = new Vyatta::Config;
return $config->exists( $self->{path} );
}
sub disabled {
my $self = shift;
my $config = new Vyatta::Config;
$config->setLevel( $self->{path} );
return $config->exists("disable");
}
sub mtu {
my $self = shift;
my $config = new Vyatta::Config;
$config->setLevel( $self->{path} );
return $config->returnValue("mtu");
}
sub dhcp {
my $self = shift;
my $config = new Vyatta::Config;
$config->setLevel( $self->{path} );
my @addr = grep { $_ eq 'dhcp' } $config->returnOrigValues('address');
return if ($#addr < 0);
return $addr[0];
}
# return array of static address (if any)
sub address {
my $self = shift;
my $config = new Vyatta::Config;
$config->setLevel( $self->{path} );
my @addr = grep { $_ ne 'dhcp' } $config->returnOrigValues('address');
return @addr if (wantarray);
return if ($#addr < 0);
return $addr[0];
}
## System checks
sub exists {
my $self = shift;
return ( -d "/sys/class/net/$self->{name}" );
}
sub _flags {
my $self = shift;
open my $flags, '<', "/sys/class/net/$self->{name}/flags"
or return;
my $val = <$flags>;
chomp $val;
close $flags;
return hex($val);
}
# device exists and is online
sub up {
my $self = shift;
my $flags = $self->_flags();
return $flags && ( $flags & IFF_UP );
}
# device exists and is running (ie carrier present)
sub running {
my $self = shift;
my $flags = $self->_flags();
return $flags && ( $flags & IFF_RUNNING );
}
# device description information in kernel (future use)
sub description {
my $self = shift;
open my $ifalias, '<', "/sys/class/net/$self->{name}/ifalias"
or return;
my $description = <$ifalias>;
close $ifalias;
return $description;
}
1;
|
