lib/perl5/5.6.1/IO/Socket/UNIX.pm

   1 # IO::Socket::UNIX.pm
   2 #
   3 # Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
   4 # This program is free software; you can redistribute it and/or
   5 # modify it under the same terms as Perl itself.
   6
   7 package IO::Socket::UNIX;
   8
   9 use strict;
  10 our(@ISA, $VERSION);
  11 use IO::Socket;
  12 use Socket;
  13 use Carp;
  14
  15 @ISA = qw(IO::Socket);
  16 $VERSION = "1.20";
  17
  18 IO::Socket::UNIX->register_domain( AF_UNIX );
  19
  20 sub new {
  21     my $class = shift;
  22     unshift(@_, "Peer") if @_ == 1;
  23     return $class->SUPER::new(@_);
  24 }
  25
  26 sub configure {
  27     my($sock,$arg) = @_;
  28     my($bport,$cport);
  29
  30     my $type = $arg->{Type} || SOCK_STREAM;
  31
  32     $sock->socket(AF_UNIX, $type, 0) or
  33         return undef;
  34
  35     if(exists $arg->{Local}) {
  36         my $addr = sockaddr_un($arg->{Local});
  37         $sock->bind($addr) or
  38             return undef;
  39     }
  40     if(exists $arg->{Listen} && $type != SOCK_DGRAM) {
  41         $sock->listen($arg->{Listen} || 5) or
  42             return undef;
  43     }
  44     elsif(exists $arg->{Peer}) {
  45         my $addr = sockaddr_un($arg->{Peer});
  46         $sock->connect($addr) or
  47             return undef;
  48     }
  49
  50     $sock;
  51 }
  52
  53 sub hostpath {
  54     @_ == 1 or croak 'usage: $sock->hostpath()';
  55     my $n = $_[0]->sockname || return undef;
  56     (sockaddr_un($n))[0];
  57 }
  58
  59 sub peerpath {
  60     @_ == 1 or croak 'usage: $sock->peerpath()';
  61     my $n = $_[0]->peername || return undef;
  62     (sockaddr_un($n))[0];
  63 }
  64
  65 1; # Keep require happy
  66
  67 __END__
  68
  69 =head1 NAME
  70
  71 IO::Socket::UNIX - Object interface for AF_UNIX domain sockets
  72
  73 =head1 SYNOPSIS
  74
  75     use IO::Socket::UNIX;
  76
  77 =head1 DESCRIPTION
  78
  79 C<IO::Socket::UNIX> provides an object interface to creating and using sockets
  80 in the AF_UNIX domain. It is built upon the L<IO::Socket> interface and
  81 inherits all the methods defined by L<IO::Socket>.
  82
  83 =head1 CONSTRUCTOR
  84
  85 =over 4
  86
  87 =item new ( [ARGS] )
  88
  89 Creates an C<IO::Socket::UNIX> object, which is a reference to a
  90 newly created symbol (see the C<Symbol> package). C<new>
  91 optionally takes arguments, these arguments are in key-value pairs.
  92
  93 In addition to the key-value pairs accepted by L<IO::Socket>,
  94 C<IO::Socket::UNIX> provides.
  95
  96     Type        Type of socket (eg SOCK_STREAM or SOCK_DGRAM)
  97     Local       Path to local fifo
  98     Peer        Path to peer fifo
  99     Listen      Create a listen socket
 100
 101 If the constructor is only passed a single argument, it is assumed to
 102 be a C<Peer> specification.
 103
 104
 105  NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE
 106
 107 As of VERSION 1.18 all IO::Socket objects have autoflush turned on
 108 by default. This was not the case with earlier releases.
 109
 110  NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE
 111
 112 =back
 113
 114 =head1 METHODS
 115
 116 =over 4
 117
 118 =item hostpath()
 119
 120 Returns the pathname to the fifo at the local end
 121
 122 =item peerpath()
 123
 124 Returns the pathanme to the fifo at the peer end
 125
 126 =back
 127
 128 =head1 SEE ALSO
 129
 130 L<Socket>, L<IO::Socket>
 131
 132 =head1 AUTHOR
 133
 134 Graham Barr. Currently maintained by the Perl Porters.  Please report all
 135 bugs to <perl5-porters@perl.org>.
 136
 137 =head1 COPYRIGHT
 138
 139 Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
 140 This program is free software; you can redistribute it and/or
 141 modify it under the same terms as Perl itself.
 142
 143 =cut