pokemud

#!/usr/bin/perl

# PokeMUD 0.1.something
# Based off code from PerlMUD; original license below.
#
# All changes, modifications, and new code
# copyright (c) 2015 Michael Pirkola
#
#
# Released under the GNU AGPL License Version 3
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as published
#    by the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#
# PerlMud license information:
#
##PerlMUD 3.0, by Boutell.Com, Inc.
##
##PERL 5 REQUIRED. Your platform must also support Internet sockets.
##
##SEE CONFIGURATION SETTINGS in mudlib.pl.
##
##RELEASED UNDER THE MIT LICENSE.
##Copyright (c) 2011 Boutell.Com, Inc.
##
##Permission is hereby granted, free of charge, to any person obtaining a 
##copy of this software and associated documentation files (the "Software"), 
##to deal in the Software without restriction, including without limitation 
##the rights to use, copy, modify, merge, publish, distribute, sublicense, 
##and/or sell copies of the Software, and to permit persons to whom the 
##Software is furnished to do so, subject to the following conditions:
##
##The above copyright notice and this permission notice shall be included 
##in all copies or substantial portions of the Software.
##
##THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
##OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
##FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
##THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 
##OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
##ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 
##OTHER DEALINGS IN THE SOFTWARE.
##
##CONTACT INFORMATION:
##
##http://www.boutell.com/perlmud/
#
#
#
### end license block ###


# The directory where PokeMUD can expect to find all of its data files,
# and the pokemudlib.pl file.  All other settings and all non-initialization
# code are in pokemudlib.pl.  This allows the @reload command to be used to
# install new code on the fly (of course, there is still a good chance
# of crashing the mud if the new code is buggy, but it can sometimes
# avoid the need for a restart).

#!# Change to perl location of currently running program.
$dataDirectory = "";
$configFile = "PokeMUD.conf";

#!# Make script accept arguments for where to find datadir and config.




#my %cfg;
require "$dataDirectory/pokemudlib.pl";

require 5.001;
use Fcntl;
use Socket;
use POSIX;
use Safe;


if (!chdir($dataDirectory))  {
	print "The MUD server could not change to the \n",
		"working directory: $dataDirectory \n",
		"Please read the documentation and follow\n",
		"all of the instructions carefully.\n";
	exit 0;
	}

if ($cfg{"hostname"} =~ /CHANGEME/) {
	print "The hostname configuration variable has not been set.\n",
		"This configuration variable must be set to the Internet\n",
		"host name of your server so users can be told how to\n",
		"connect.  Please read the documentation and follow all of\n",
		"the instructions carefully.\n";
	exit 0;
	}


# Start time
$now = time;

# Set seed for RNG.
srand($now + $$);

$initialized = $now;
$lastdump = $now;
$lastFdClosure = $now;

# Load database
if (!&restore)  {
	print "Can't start the mud with this database.\n";
	exit 0;
	}

# Name first file descriptor
$fdBase = "FD";
$fdNum = 0;

# Set up listener socket
# Thanks, PerlMUD.  I don't even know how this works.
# But you've done it for me.
$sockaddr = 'S n a4 x8';
($name, $aliases, $proto) = getprotobyname("tcp");


# First for telnet connections.
@addr = split(/\./, $cfg{"ip_address"});
$this = pack($sockaddr, AF_INET, $cfg{"tinyp_port"}, pack("CCCC", @addr));

if (!socket(TINYP_LISTENER, AF_INET, SOCK_STREAM, $proto))  {
	print "Couldn't create tinyp listener socket.\n";
	print "This Perl implementation probably does not support sockets.\n";
	exit 1;
	}

# Make sure we can reuse this quickly after a shutdown
setsockopt(TINYP_LISTENER, SOL_SOCKET, SO_REUSEADDR, $this);

# Always set linger; we'll make many brief attempts to
# close the socket to avoid responsiveness problems
setsockopt(TINYP_LISTENER, SOL_SOCKET, SO_LINGER, 1);

# Get the port
if (!bind(TINYP_LISTENER, $this))  {
	print "Couldn't bind to port ", $cfg{"tinyp_port"}, ".\n";
	close(TINYP_LISTENER);
	exit 1;
	}

fcntl(TINYP_LISTENER, F_SETFL, O_NONBLOCK);

if (!listen(TINYP_LISTENER, 5))  {
	print "Couldn't initiate listening for tinyp connections.\n";
	close(TINYP_LISTENER);
	exit 1;
	}


# Then for http connections
@addr = split(/\./, $cfg{"http_ip_address"}); 
$this = pack($sockaddr, AF_INET, $cfg{"http_port"}, pack("CCCC", @addr));

if (!socket(HTTP_LISTENER, AF_INET, SOCK_STREAM, $proto))  {
	print "Couldn't create http listener socket.\n";
	print "This Perl implementation probably does not support sockets.\n";
	exit 1;
	}

# Make sure we can reuse this quickly after a shutdown
setsockopt(HTTP_LISTENER, SOL_SOCKET, SO_REUSEADDR, $this);

# Always set linger; we'll make many brief attempts to
# close the socket to avoid responsiveness problems
setsockopt(TINYP_LISTENER, SOL_SOCKET, SO_LINGER, 1);  # Not sure why this is TINYP

# Get the port
if (!bind(HTTP_LISTENER, $this))  {
	print "Couldn't bind to port ", $cfg{"http_port"}, ".\n";
	close(HTTP_LISTENER);
	exit 1;
	}

fcntl(HTTP_LISTENER, F_SETFL, O_NONBLOCK);

if (!listen(HTTP_LISTENER, 5))  {
	print "Couldn't initiate listening for http connections.\n";
	close(HTTP_LISTENER);
	exit 1;
	}

# This is the MUD, basically.
until ($theCowsComeHome)  {  # A.K.A., while (1)
	# Select loop
	&selectPass;
	if ($reloadFlag)  {
		my($file) = "$dataDirectory/pokemudlib.pl";
		my($return);
		$return = do $file;
		if ($return)  {
			&tellWizards(chr(27) . '[31m' . "Reloaded $file successfully." . chr(27) . '[0m');
			}
		else  {
			# Hopefully the programmer didn't break tellWizards!
			&tellWizards(chr(27) . '[31m' . chr(27) . '[1m' .
					"Couldn't parse $file: $@" . chr(27) . '[0m') if $@;
			&tellWizards(chr(27) . '[31m' . chr(27) . '[1m' .
					"Couldn't do $file: $!" . chr(27) . '[0m') unless
				defined $return;
			&tellWizards(chr(27) . '[31m' . chr(27) . '[1m' .
					"Couldn't run $file" . chr(27) . '[0m') unless $return;
			}
		$reloadFlag = 0;
		}
	}