/usr/share/perl5/Net/Server/Proto/TCP.pm is in libnet-server-perl 2.009-1.
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 | # -*- perl -*-
#
# Net::Server::Proto::TCP - Net::Server Protocol module
#
# Copyright (C) 2001-2017
#
# Paul Seamons <paul@seamons.com>
#
# This package may be distributed under the terms of either the
# GNU General Public License
# or the
# Perl Artistic License
#
# All rights reserved.
#
################################################################
package Net::Server::Proto::TCP;
use strict;
use warnings;
use IO::Socket::INET;
use Net::Server::Proto;
our @ISA = qw(IO::Socket::INET); # we may dynamically change this to INET6 based upon our server configuration
sub NS_proto { 'TCP' }
sub NS_port { my $sock = shift; ${*$sock}{'NS_port'} = shift if @_; return ${*$sock}{'NS_port'} }
sub NS_host { my $sock = shift; ${*$sock}{'NS_host'} = shift if @_; return ${*$sock}{'NS_host'} }
sub NS_ipv { my $sock = shift; ${*$sock}{'NS_ipv'} = shift if @_; return ${*$sock}{'NS_ipv'} }
sub NS_listen { my $sock = shift; ${*$sock}{'NS_listen'} = shift if @_; return ${*$sock}{'NS_listen'} }
sub object {
my ($class, $info, $server) = @_;
# we cannot do this at compile time because we have not yet read the configuration then
@ISA = qw(IO::Socket::INET6) if $ISA[0] eq 'IO::Socket::INET' && Net::Server::Proto->requires_ipv6($server);
my @sock = $class->SUPER::new();
foreach my $sock (@sock) {
$sock->NS_host($info->{'host'});
$sock->NS_port($info->{'port'});
$sock->NS_ipv( $info->{'ipv'} );
$sock->NS_listen(defined($info->{'listen'}) ? $info->{'listen'}
: defined($server->{'server'}->{'listen'}) ? $server->{'server'}->{'listen'}
: Socket::SOMAXCONN());
${*$sock}{'NS_orig_port'} = $info->{'orig_port'} if defined $info->{'orig_port'};
}
return wantarray ? @sock : $sock[0];
}
sub log_connect {
my ($sock, $server) = @_;
$server->log(2, "Binding to ".$sock->NS_proto." port ".$sock->NS_port." on host ".$sock->NS_host." with IPv".$sock->NS_ipv);
}
sub connect {
my ($sock, $server) = @_;
my $host = $sock->NS_host;
my $port = $sock->NS_port;
my $ipv = $sock->NS_ipv;
my $lstn = $sock->NS_listen;
$sock->SUPER::configure({
LocalPort => $port,
Proto => 'tcp',
Listen => $lstn,
ReuseAddr => 1,
Reuse => 1,
(($host ne '*') ? (LocalAddr => $host) : ()), # * is all
($sock->isa("IO::Socket::INET6") ? (Domain => ($ipv eq '6') ? Socket6::AF_INET6() : ($ipv eq '4') ? Socket::AF_INET() : Socket::AF_UNSPEC()) : ()),
}) || $server->fatal("Can't connect to TCP port $port on $host [$!]");
if ($port eq '0' and $port = $sock->sockport) {
$server->log(2, " Bound to auto-assigned port $port");
${*$sock}{'NS_orig_port'} = $sock->NS_port;
$sock->NS_port($port);
} elsif ($port =~ /\D/ and $port = $sock->sockport) {
$server->log(2, " Bound to service port ".$sock->NS_port()."($port)");
${*$sock}{'NS_orig_port'} = $sock->NS_port;
$sock->NS_port($port);
}
}
sub reconnect { # after a sig HUP
my ($sock, $fd, $server, $port) = @_;
$server->log(3,"Reassociating file descriptor $fd with ".$sock->NS_proto." on [".$sock->NS_host."]:".$sock->NS_port.", using IPv".$sock->NS_ipv);
$sock->fdopen($fd, 'w') or $server->fatal("Error opening to file descriptor ($fd) [$!]");
if ($sock->isa("IO::Socket::INET6")) {
my $ipv = $sock->NS_ipv;
${*$sock}{'io_socket_domain'} = ($ipv eq '6') ? Socket6::AF_INET6() : ($ipv eq '4') ? Socket::AF_INET() : Socket::AF_UNSPEC();
}
if ($port ne $sock->NS_port) {
$server->log(2, " Re-bound to previously assigned port $port");
${*$sock}{'NS_orig_port'} = $sock->NS_port;
$sock->NS_port($port);
}
}
sub accept {
my ($sock, $class) = (@_);
my ($client, $peername);
if (wantarray) {
($client, $peername) = $sock->SUPER::accept($class);
} else {
$client = $sock->SUPER::accept($class);
}
if (defined $client) {
$client->NS_port($sock->NS_port);
}
return wantarray ? ($client, $peername) : $client;
}
sub poll_cb { # implemented for psgi compatibility - TODO - should poll appropriately for Multipex
my ($self, $cb) = @_;
return $cb->($self);
}
###----------------------------------------------------------------###
sub read_until { # only sips the data - but it allows for compatibility with SSLEAY
my ($client, $bytes, $end_qr) = @_;
die "One of bytes or end_qr should be defined for TCP read_until\n" if !defined($bytes) && !defined($end_qr);
my $content = '';
my $ok = 0;
while (1) {
$client->read($content, 1, length($content));
if (defined($bytes) && length($content) >= $bytes) {
$ok = 2;
last;
} elsif (defined($end_qr) && $content =~ $end_qr) {
$ok = 1;
last;
}
}
return wantarray ? ($ok, $content) : $content;
}
###----------------------------------------------------------------###
### a string containing any information necessary for restarting the server
### via a -HUP signal
### a newline is not allowed
### the hup_string must be a unique identifier based on configuration info
sub hup_string {
my $sock = shift;
return join "|", $sock->NS_host, $sock->NS_port, $sock->NS_proto, 'ipv'.$sock->NS_ipv, (defined(${*$sock}{'NS_orig_port'}) ? ${*$sock}{'NS_orig_port'} : ());
}
sub show {
my $sock = shift;
return "Ref = \"".ref($sock). "\" (".$sock->hup_string.")\n";
}
1;
__END__
=head1 NAME
Net::Server::Proto::TCP - Net::Server TCP protocol.
=head1 SYNOPSIS
See L<Net::Server::Proto>.
=head1 DESCRIPTION
Protocol module for Net::Server. This module implements the
SOCK_STREAM socket type under INET (also known as TCP).
See L<Net::Server::Proto>.
=head1 PARAMETERS
There are no additional parameters that can be specified.
See L<Net::Server> for more information on reading arguments.
=head1 INTERNAL METHODS
=over 4
=item C<object>
Returns an object with parameters suitable for eventual creation of
a IO::Socket::INET object listening on UDP.
=item C<log_connect>
Called before binding the socket to provide useful information to the logs.
=item C<connect>
Called when actually binding the port. Handles default parameters
before calling parent method.
=item C<reconnect>
Called instead of connect method during a server hup.
=item C<accept>
Override of the parent class to make sure necessary parameters are passed down to client sockets.
=item C<poll_cb>
Allow for psgi compatible interface during HTTP server.
=item C<read_until>
Takes a regular expression, reads from the socket until the regular expression is matched.
=item C<hup_string>
Returns a unique identifier that can be passed to the re-exec'ed process during HUP.
=item C<show>
Basic dumper of properties stored in the glob.
=item C<AUTOLOAD>
Handle accessor methods.
=back
=head1 LICENCE
Distributed under the same terms as Net::Server
=cut
|