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|
# -*- perl -*-
#
# INetSim::Daytime::UDP - A fake UDP daytime server
#
# RFC 867 - Daytime Protocol
#
# (c)2007-2010 Matthias Eckert, Thomas Hungenberg
#
# Version 0.49 (2010-04-12)
#
# For history/changelog see bottom of this file.
#
#############################################################
package INetSim::Daytime::UDP;
use strict;
use warnings;
use base qw(INetSim::Daytime);
sub configure_hook {
my $self = shift;
$self->{server}->{host} = &INetSim::Config::getConfigParameter("Default_BindAddress"); # bind to address
$self->{server}->{port} = &INetSim::Config::getConfigParameter("Daytime_UDP_BindPort"); # bind to port
$self->{server}->{proto} = 'udp'; # UDP protocol
$self->{server}->{user} = &INetSim::Config::getConfigParameter("Default_RunAsUser"); # user to run as
$self->{server}->{group} = &INetSim::Config::getConfigParameter("Default_RunAsGroup"); # group to run as
$self->{server}->{setsid} = 0; # do not daemonize
$self->{server}->{no_client_stdout} = 1; # do not attach client to STDOUT
$self->{server}->{log_level} = 0; # do not log anything
# $self->{server}->{udp_recv_len} = 1024; # default is 4096
$self->{servicename} = &INetSim::Config::getConfigParameter("Daytime_UDP_ServiceName");
$self->{max_childs} = &INetSim::Config::getConfigParameter("Default_MaxChilds");
$self->{faketime_max} = &INetSim::Config::getConfigParameter("Faketime_Max");
}
sub pre_loop_hook {
my $self = shift;
$0 = "inetsim_$self->{servicename}";
&INetSim::Log::MainLog("started (PID $$)", $self->{servicename});
}
sub pre_server_close_hook {
my $self = shift;
&INetSim::Log::MainLog("stopped (PID $$)", $self->{servicename});
}
sub fatal_hook {
my $self = shift;
&INetSim::Log::MainLog("failed!", $self->{servicename});
exit 0;
}
sub process_request {
my $self = shift;
my $client = $self->{server}->{client};
my $rhost = $self->{server}->{peeraddr};
my $rport = $self->{server}->{peerport};
my $stat_success = 0;
&INetSim::Log::SubLog("[$rhost:$rport] connect", $self->{servicename}, $$);
if ($self->{server}->{numchilds} >= $self->{max_childs}) {
print $client "Maximum number of connections ($self->{max_childs}) exceeded.\n";
&INetSim::Log::SubLog("[$rhost:$rport] Connection refused - maximum number of connections ($self->{max_childs}) exceeded.", $self->{servicename}, $$);
}
else {
my $recvmsg = $self->{server}->{udp_data};
$recvmsg =~ s/[\r\n]+$//g;
if (defined $recvmsg && $recvmsg ne ""){
&INetSim::Log::SubLog("[$rhost:$rport] recv: $recvmsg", $self->{servicename}, $$);
}
my $seconds = &INetSim::FakeTime::get_faketime();
if ($seconds < 0) {
$seconds = 0;
&INetSim::Log::SubLog("info: Faketime less than epoche, set to epoche", $self->{servicename}, $$);
}
elsif ($seconds > $self->{faketime_max}) {
$seconds = $self->{faketime_max};
&INetSim::Log::SubLog("info: Faketime overflow, set to maximum time", $self->{servicename}, $$);
}
my $cur_time = localtime($seconds);
$client->send("$cur_time\r\n");
&INetSim::Log::SubLog("[$rhost:$rport] send: ".$cur_time, $self->{servicename}, $$);
$stat_success = 1;
}
&INetSim::Log::SubLog("[$rhost:$rport] disconnect", $self->{servicename}, $$);
&INetSim::Log::SubLog("[$rhost:$rport] stat: $stat_success", $self->{servicename}, $$);
}
1;
#############################################################
#
# History:
#
# Version 0.49 (2010-04-12) me
# - undo changes from version 0.46 because it's already implemented
# in the log module
#
# Version 0.48 (2009-10-28) me
# - improved some code parts
#
# Version 0.47 (2008-08-27) me
# - added logging of process id
#
# Version 0.46 (2008-06-24) me
# - replace non-printable characters with "." before logging
#
# Version 0.45 (2007-12-31) th
# - change process name
#
# Version 0.44 (2007-04-25) th
# - use getConfigParameter
#
# Version 0.43 (2007-04-21) me
# - added logging of status for use with &INetSim::Report::GenReport()
#
# Version 0.42 (2007-04-10) th
# - get fake time via &INetSim::FakeTime::get_faketime()
# instead of accessing $INetSim::Config::FakeTimeDelta
#
# Version 0.41 (2007-04-05) th
# - changed check for MaxChilds, BindAddress, RunAsUser and
# RunAsGroup
#
# Version 0.4 (2007-03-26) th
# - split TCP and UDP servers to separate modules
# - rewrote module to use INetSim::GenericServer
# - added logging of refused connections
#
# Version 0.32 (2007-03-18) th
# - added check if faketime is less than epoche or bigger than
# maximum time
#
# Version 0.31 (2007-03-16) th
# - added configuration option $INetSim::Config::FakeTimeDelta
#
# Version 0.3 (2007-03-09) me
#
#############################################################
|
