lib/PXElator/network.pm

package network;

use warnings;
use strict;

use File::Slurp;

use server;

sub ifconfig {
        my $dev = shift;
        `/sbin/ifconfig $dev`
}

sub tap {

        if ( my $dev = $ENV{DEV} ) {
                warn "W: running under device $dev, not configuring tap0\n";
                return;
        }

        if ( $server::ip !~ m{^172} ) {
                warn "W: server ip mismetch, not configuring tap0\n";
                return;
        }

        my $interfaces = read_file '/etc/network/interfaces';

        if ( $interfaces !~ m{tap0}s ) {

                system "sudo apt-get install -y vde2";

                write_file '/tmp/interfaces', qq{

# added by PXElator
iface tap0 inet static
        address $server::ip
        netmask $server::netmask
        vde2-switch -
        # setup NAT for vde network
        post-up sysctl -w net.ipv4.ip_forward=1
        post-up iptables -t nat -A POSTROUTING -s $server::ip/$server::netmask -o wlan0 -j MASQUERADE

                };

                system q|sudo sh -c 'cat /tmp/interfaces >> /etc/network/interfaces'|;
                system q|sudo sh -c 'usermod -G vde2-net -a $SUDO_USER'|;

        }

        my $ifconfig = ifconfig('tap0');
        if ( $ifconfig =~ m{UP} ) {
                 $ifconfig =~ m{$server::ip}s && return 'up';
                system("sudo /sbin/ifconfig tap0 $server::ip netmask $server::netmask") == 0 && return "ip changed $server::ip";
                die "can't change IP address of tap0 to $server::ip";
        } else {
                die "bring interface up with: sudo ifup tap0\n";
        }
}

1;
1	dpavlin	82	package network;
2
3			use warnings;
4			use strict;
5
6			use File::Slurp;
7
8			use server;
9
10	dpavlin	83	sub ifconfig {
11			my $dev = shift;
12			`/sbin/ifconfig $dev`
13			}
14
15	dpavlin	82	sub tap {
16
17	dpavlin	179	if ( my $dev = $ENV{DEV} ) {
18			warn "W: running under device $dev, not configuring tap0\n";
19			return;
20			}
21
22	dpavlin	175	if ( $server::ip !~ m{^172} ) {
23	dpavlin	179	warn "W: server ip mismetch, not configuring tap0\n";
24	dpavlin	175	return;
25			}
26
27	dpavlin	82	my $interfaces = read_file '/etc/network/interfaces';
28
29	dpavlin	130	if ( $interfaces !~ m{tap0}s ) {
30	dpavlin	82
31	dpavlin	197	system "sudo apt-get install -y vde2";
32	dpavlin	82
33	dpavlin	99	write_file '/tmp/interfaces', qq{
34	dpavlin	82
35	dpavlin	99	# added by PXElator
36			iface tap0 inet static
37			address $server::ip
38			netmask $server::netmask
39			vde2-switch -
40	dpavlin	144	# setup NAT for vde network
41			post-up sysctl -w net.ipv4.ip_forward=1
42			post-up iptables -t nat -A POSTROUTING -s $server::ip/$server::netmask -o wlan0 -j MASQUERADE
43	dpavlin	82
44			};
45
46	dpavlin	99	system q\|sudo sh -c 'cat /tmp/interfaces >> /etc/network/interfaces'\|;
47			system q\|sudo sh -c 'usermod -G vde2-net -a $SUDO_USER'\|;
48	dpavlin	82
49			}
50
51	dpavlin	84	my $ifconfig = ifconfig('tap0');
52			if ( $ifconfig =~ m{UP} ) {
53			$ifconfig =~ m{$server::ip}s && return 'up';
54			system("sudo /sbin/ifconfig tap0 $server::ip netmask $server::netmask") == 0 && return "ip changed $server::ip";
55			die "can't change IP address of tap0 to $server::ip";
56	dpavlin	140	} else {
57			die "bring interface up with: sudo ifup tap0\n";
58	dpavlin	84	}
59	dpavlin	82	}
60
61			1;