/usr/lib/perl5/IO/Interface/Simple.pm is in libio-interface-perl 1.06-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 | package IO::Interface::Simple;
use strict;
use IO::Socket;
use IO::Interface;
use overload '""' => \&as_string,
eq => '_eq_',
fallback => 1;
# class variable
my $socket;
# class methods
sub interfaces {
my $class = shift;
my $s = $class->sock;
return sort {($a->index||0) <=> ($b->index||0) } map {$class->new($_)} $s->if_list;
}
sub new {
my $class = shift;
my $if_name = shift;
my $s = $class->sock;
return unless defined $s->if_mtu($if_name);
return bless {s => $s,
name => $if_name},ref $class || $class;
}
sub new_from_address {
my $class = shift;
my $addr = shift;
my $s = $class->sock;
my $name = $s->addr_to_interface($addr) or return;
return $class->new($name);
}
sub new_from_index {
my $class = shift;
my $index = shift;
my $s = $class->sock;
my $name = $s->if_indextoname($index) or return;
return $class->new($name);
}
sub sock {
my $self = shift;
if (ref $self) {
return $self->{s} ||= $socket;
} else {
return $socket ||= IO::Socket::INET->new(Proto=>'udp');
}
}
sub _eq_ {
return shift->name eq shift;
}
sub as_string {
shift->name;
}
sub name {
shift->{name};
}
sub address {
my $self = shift;
$self->sock->if_addr($self->name,@_);
}
sub broadcast {
my $self = shift;
$self->sock->if_broadcast($self->name,@_);
}
sub netmask {
my $self = shift;
$self->sock->if_netmask($self->name,@_);
}
sub dstaddr {
my $self = shift;
$self->sock->if_dstaddr($self->name,@_);
}
sub hwaddr {
my $self = shift;
$self->sock->if_hwaddr($self->name,@_);
}
sub flags {
my $self = shift;
$self->sock->if_flags($self->name,@_);
}
sub mtu {
my $self = shift;
$self->sock->if_mtu($self->name,@_);
}
sub metric {
my $self = shift;
$self->sock->if_metric($self->name,@_);
}
sub index {
my $self = shift;
return $self->sock->if_index($self->name);
}
sub is_running { shift->_gettestflag(IO::Interface::IFF_RUNNING(),@_) }
sub is_broadcast { shift->_gettestflag(IO::Interface::IFF_BROADCAST(),@_) }
sub is_pt2pt { shift->_gettestflag(IO::Interface::IFF_POINTOPOINT(),@_) }
sub is_loopback { shift->_gettestflag(IO::Interface::IFF_LOOPBACK(),@_) }
sub is_promiscuous { shift->_gettestflag(IO::Interface::IFF_PROMISC(),@_) }
sub is_multicast { shift->_gettestflag(IO::Interface::IFF_MULTICAST(),@_) }
sub is_notrailers { shift->_gettestflag(IO::Interface::IFF_NOTRAILERS(),@_) }
sub is_noarp { shift->_gettestflag(IO::Interface::IFF_NOARP(),@_) }
sub _gettestflag {
my $self = shift;
my $bitmask = shift;
my $flags = $self->flags;
if (@_) {
$flags |= $bitmask;
$self->flags($flags);
} else {
return ($flags & $bitmask) != 0;
}
}
1;
=head1 NAME
IO::Interface::Simple - Perl extension for access to network card configuration information
=head1 SYNOPSIS
use IO::Interface::Simple;
my $if1 = IO::Interface::Simple->new('eth0');
my $if2 = IO::Interface::Simple->new_from_address('127.0.0.1');
my $if3 = IO::Interface::Simple->new_from_index(1);
my @interfaces = IO::Interface::Simple->interfaces;
for my $if (@interfaces) {
print "interface = $if\n";
print "addr = ",$if->address,"\n",
"broadcast = ",$if->broadcast,"\n",
"netmask = ",$if->netmask,"\n",
"dstaddr = ",$if->dstaddr,"\n",
"hwaddr = ",$if->hwaddr,"\n",
"mtu = ",$if->mtu,"\n",
"metric = ",$if->metric,"\n",
"index = ",$if->index,"\n";
print "is running\n" if $if->is_running;
print "is broadcast\n" if $if->is_broadcast;
print "is p-to-p\n" if $if->is_pt2pt;
print "is loopback\n" if $if->is_loopback;
print "is promiscuous\n" if $if->is_promiscuous;
print "is multicast\n" if $if->is_multicast;
print "is notrailers\n" if $if->is_notrailers;
print "is noarp\n" if $if->is_noarp;
}
=head1 DESCRIPTION
IO::Interface::Simple allows you to interrogate and change network
interfaces. It has overlapping functionality with Net::Interface, but
might compile and run on more platforms.
=head2 Class Methods
=over 4
=item $interface = IO::Interface::Simple->new('eth0')
Given an interface name, new() creates an interface object.
=item @iflist = IO::Interface::Simple->interfaces;
Returns a list of active interface objects.
=item $interface = IO::Interface::Simple->new_from_address('192.168.0.1')
Returns the interface object corresponding to the given address.
=item $interface = IO::Interface::Simple->new_from_index(2)
Returns the interface object corresponding to the given numeric
index. This is only supported on BSD-ish platforms.
=back
=head2 Object Methods
=over 4
=item $name = $interface->name
Get the name of the interface. The interface object is also overloaded
so that if you use it in a string context it is the same as calling
name().
=item $index = $interface->index
Get the index of the interface. This is only supported on BSD-like
platforms.
=item $addr = $interface->address([$newaddr])
Get or set the interface's address.
=item $addr = $interface->broadcast([$newaddr])
Get or set the interface's broadcast address.
=item $addr = $interface->netmask([$newmask])
Get or set the interface's netmask.
=item $addr = $interface->hwaddr([$newaddr])
Get or set the interface's hardware address.
=item $addr = $interface->mtu([$newmtu])
Get or set the interface's MTU.
=item $addr = $interface->metric([$newmetric])
Get or set the interface's metric.
=item $flags = $interface->flags([$newflags])
Get or set the interface's flags. These can be ANDed with the IFF
constants exported by IO::Interface or Net::Interface in order to
interrogate the state and capabilities of the interface. However, it
is probably more convenient to use the broken-out methods listed
below.
=item $flag = $interface->is_running([$newflag])
=item $flag = $interface->is_broadcast([$newflag])
=item $flag = $interface->is_pt2pt([$newflag])
=item $flag = $interface->is_loopback([$newflag])
=item $flag = $interface->is_promiscuous([$newflag])
=item $flag = $interface->is_multicast([$newflag])
=item $flag = $interface->is_notrailers([$newflag])
=item $flag = $interface->is_noarp([$newflag])
Get or set the corresponding configuration parameters. Note that the
operating system may not let you set some of these.
=back
=head1 AUTHOR
Lincoln Stein E<lt>lstein@cshl.orgE<gt>
This module is distributed under the same license as Perl itself.
=head1 SEE ALSO
L<perl>, L<IO::Socket>, L<IO::Multicast>), L<IO::Interface>, L<Net::Interface>
=cut
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