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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# Net::Time.pm # # Copyright (C) 1995-2004 Graham Barr. All rights reserved. # Copyright (C) 2014, 2020 Steve Hay. All rights reserved. # This module is free software; you can redistribute it and/or modify it under # the same terms as Perl itself, i.e. under the terms of either the GNU General # Public License or the Artistic License, as specified in the F file. package Net::Time; use 5.008001; use strict; use warnings; use Carp; use Exporter; use IO::Select; use IO::Socket; use Net::Config; our @ISA = qw(Exporter); our @EXPORT_OK = qw(inet_time inet_daytime); our $VERSION = "3.14"; our $TIMEOUT = 120; sub _socket { my ($pname, $pnum, $host, $proto, $timeout) = @_; $proto ||= 'udp'; my $port = (getservbyname($pname, $proto))[2] || $pnum; my $hosts = defined $host ? [$host] : $NetConfig{$pname . '_hosts'}; my $me; foreach my $addr (@$hosts) { $me = IO::Socket::INET->new( PeerAddr => $addr, PeerPort => $port, Proto => $proto ) and last; } return unless $me; $me->send("\n") if $proto eq 'udp'; $timeout = $TIMEOUT unless defined $timeout; IO::Select->new($me)->can_read($timeout) ? $me : undef; } sub inet_time { my $s = _socket('time', 37, @_) || return; my $buf = ''; my $offset = 0 | 0; return unless defined $s->recv($buf, length(pack("N", 0))); # unpack, we | 0 to ensure we have an unsigned my $time = (unpack("N", $buf))[0] | 0; # the time protocol return time in seconds since 1900, convert # it to a the required format if ($^O eq "MacOS") { # MacOS return seconds since 1904, 1900 was not a leap year. $offset = (4 * 31536000) | 0; } else { # otherwise return seconds since 1972, there were 17 leap years between # 1900 and 1972 $offset = (70 * 31536000 + 17 * 86400) | 0; } $time - $offset; } sub inet_daytime { my $s = _socket('daytime', 13, @_) || return; my $buf = ''; defined($s->recv($buf, 1024)) ? $buf : undef; } 1; __END__ =head1 NAME Net::Time - time and daytime network client interface =head1 SYNOPSIS use Net::Time qw(inet_time inet_daytime); print inet_time(); # use default host from Net::Config print inet_time('localhost'); print inet_time('localhost', 'tcp'); print inet_daytime(); # use default host from Net::Config print inet_daytime('localhost'); print inet_daytime('localhost', 'tcp'); =head1 DESCRIPTION C provides subroutines that obtain the time on a remote machine. =head2 Functions =over 4 =item C Obtain the time on C<$host>, or some default host if C<$host> is not given or not defined, using the protocol as defined in RFC868. The optional argument C<$protocol> should define the protocol to use, either C or C. The result will be a time value in the same units as returned by time() or I upon failure. =item C Obtain the time on C<$host>, or some default host if C<$host> is not given or not defined, using the protocol as defined in RFC867. The optional argument C<$protocol> should define the protocol to use, either C or C. The result will be an ASCII string or I upon failure. =back =head1 EXPORTS The following symbols are, or can be, exported by this module: =over 4 =item Default Exports I. =item Optional Exports C, C. =item Export Tags I. =back =head1 KNOWN BUGS I. =head1 AUTHOR Graham Barr ELE. Steve Hay ELE is now maintaining libnet as of version 1.22_02. =head1 COPYRIGHT Copyright (C) 1995-2004 Graham Barr. All rights reserved. Copyright (C) 2014, 2020 Steve Hay. All rights reserved. =head1 LICENCE This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself, i.e. under the terms of either the GNU General Public License or the Artistic License, as specified in the F file. =head1 VERSION Version 3.14 =head1 DATE 23 Dec 2020 =head1 HISTORY See the F file. =cut