#!/usr/local/bin/php -f
<?php
/* $Id$ */
/*
	rc.initial.setlanip
	part of m0n0wall (http://m0n0.ch/wall)

	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
	All rights reserved.

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions are met:

	1. Redistributions of source code must retain the above copyright notice,
	   this list of conditions and the following disclaimer.

	2. Redistributions in binary form must reproduce the above copyright
	   notice, this list of conditions and the following disclaimer in the
	   documentation and/or other materials provided with the distribution.

	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	POSSIBILITY OF SUCH DAMAGE.
*/

	/* parse the configuration and include all functions used below */
	require_once("config.inc");
	require_once("functions.inc");
	require_once("filter.inc");
	require_once("shaper.inc");
	require_once("rrd.inc");

	function prompt_for_enable_dhcp_server() {
		global $config, $fp, $interface;
		if($interface == "wan") {
			if($config['interfaces']['lan']) 
				return "n";
		}
		/* only allow DHCP server to be enabled when static IP is
		  configured on this interface */
		if (is_ipaddr($config['interfaces'][$interface]['ipaddr'])) {
			do {
				$good = false;
				$upperifname = strtoupper($interface);
				echo "\n" . gettext("Do you want to enable the DHCP server on {$upperifname}? [y|n]") . "  ";
				$yn = strtolower(chop(fgets($fp)));
				if ($yn[0] == "y" or $yn[0] == "n")
				$good = true;
			} while (!$good);
		}
		return $yn;
	}

	$fp = fopen('php://stdin', 'r');
	$addr_blank = false;

	/* build an interface collection */
	$ifdescrs = get_configured_interface_with_descr(false, true);
	$j = count($ifdescrs);
	
	/* grab interface that we will operate on, unless there is only one
	interface */
	if ($j > 1) {
		echo "Available interfaces:\n\n";
		$x=1;
		foreach($ifdescrs as $iface) {
			echo "{$x} - {$iface}\n";
			$x++;
		}
		echo "\nEnter the number of the interface you wish to configure: ";
		$intnum = chop(fgets($fp));	
	} else {
		$intnum = $j;
	}
	
	if($intnum < 1) 
		exit;
	if($intnum > $j)
		exit;
		
	$index = 1;
	foreach ($ifdescrs as $ifname => $ifdesc) {
		if ($intnum == $index)  {
			$interface = $ifname;
			break;
		} else {
			$index++;
		}
	}	
	if(!$interface) {
		echo "Invalid interface!\n";
		exit;
	}
		
	do {
		
		if($interface == "wan") {
			$upperifname = strtoupper($interface);
			echo gettext("Configure {$upperifname} interface via DHCP?  [y|n]") . "\n> ";
			$intdhcp = chop(fgets($fp));
			if(strtolower($intdhcp) == "y" || strtolower($intdhcp) == "yes") {
				$intip = "dhcp";
				$intbits = "";
				$isintdhcp = true;
				$restart_dhcpd = true;
			} 
		}
		
		if($isintdhcp == false or $interface <> "wan") {
			do {
				$upperifname = strtoupper($interface);
				echo "\n" . gettext("Enter the new {$upperifname} IPv4 address.  Press <ENTER> for none:") . "\n> ";
				$intip = chop(fgets($fp));
				$addr_blank = false;
			} while (!(is_ipaddr($intip) || $intip == ''));
		  	if ($intip != '') {
		  		echo "\n" . gettext("Subnet masks are entered as bit counts (as in CIDR notation) in {$g['product_name']}.") . "\n";
		  		echo "e.g. 255.255.255.0 = 24\n";
		  		echo "     255.255.0.0   = 16\n";
		  		echo "     255.0.0.0     = 8\n";
		  		do {
					$upperifname = strtoupper($interface);
		  			echo "\n" . gettext("Enter the new {$upperifname} IPv4 subnet bit count:") . "\n> ";
		  			$intbits = chop(fgets($fp));
					$restart_dhcpd = true;
		  		} while (!is_numeric($intbits) || ($intbits < 1) || ($intbits > 31));
		  	} 
		}


	} while ($addr_blank);

	$config['interfaces'][$interface]['ipaddr'] = $intip;
	$config['interfaces'][$interface]['subnet'] = $intbits;
	$config['interfaces'][$interface]['enable'] = true;
	
	if($g['services_dhcp_server_enable'])
		$yn = prompt_for_enable_dhcp_server();
	
	// TODO: Add DHCP IPv6 support
	if ($yn == "y") {
		do {
			echo gettext("Enter the start address of the client address range:") . " ";
			$dhcpstartip = chop(fgets($fp));
			if ($dhcpstartip === "") {
				fclose($fp);
				exit(0);
			}
		} while (!(is_ipaddr($dhcpstartip)));

		do {
			echo gettext("Enter the end address of the client address range:") . " ";
			$dhcpendip = chop(fgets($fp));
			if ($dhcpendip === "") {
				fclose($fp);
				exit(0);
			}
		} while (!(is_ipaddr($dhcpendip)));
		$restart_dhcpd = true;
		$config['dhcpd'][$interface]['enable'] = true;
		$config['dhcpd'][$interface]['range']['from'] = $dhcpstartip;
		$config['dhcpd'][$interface]['range']['to'] = $dhcpendip;
	} else {
		/* TODO - this line is causing a "Fatal error: Cannot unset
		  string offsets in /etc/rc.initial.setlanip" on below line
		  number */
		if($config['dhcpd'][$interface]) 
			unset($config['dhcpd'][$interface]['enable']);
		echo "Disabling DHCPD...";
		services_dhcpd_configure();
		echo "Done!\n";
	}

	if ($config['system']['webgui']['protocol'] == "https") {

	  	do {
	      $good = false;
	  		echo "\n" . gettext("Do you want to revert to HTTP as the webConfigurator protocol? (y/n)") . " ";
	      $yn = strtolower(chop(fgets($fp)));
	      if ($yn[0] == "y" or $yn[0] == "n")
	        $good = true;
	    } while (!$good);

		if ($yn == "y") {
			$config['system']['webgui']['protocol'] = "http";
			$restart_webgui = true;
		}
	}

	if (isset($config['system']['webgui']['noantilockout'])) {
		echo "\n" . gettext("Note: the anti-lockout rule on {$interface} has been re-enabled.") . "\n";
		unset($config['system']['webgui']['noantilockout']);
	}

	if($config['interfaces']['lan']) {
		if($config['dhcpd'])
			if($config['dhcpd']['wan'])
				unset($config['dhcpd']['wan']);		
	}

	if(!$config['interfaces']['lan']) {
		unset($config['interfaces']['lan']);
		if($config['dhcpd']['lan'])
			unset($config['dhcpd']['lan']);
		unset($config['shaper']);
		unset($config['ezshaper']);
		unset($config['nat']);
		system("rm /var/dhcpd/var/db/* >/dev/null 2>/dev/null");
		services_dhcpd_configure();
	}

	$upperifname = strtoupper($interface);
	echo "\nPlease wait, saving and activating your changes to {$upperifname}...";
	write_config(gettext("{$interface} IP configuration from console menu"));
	interface_configure(strtolower($upperifname));
	echo " Reloading filter...";
	filter_configure_sync();
	echo "\n";
	if($restart_dhcpd) {
		echo " DHCPD..."; 
		services_dhcpd_configure();
	}
	if($restart_webgui) {
		echo " restarting webConfigurator... ";
		mwexec("/etc/rc.restart_webgui");
	}
	
	if ($intip != '') {
		if (is_ipaddr($intip)) {
			echo "\n\n" . gettext("The IPv4 {$upperifname} address has been set to ") . "{$intip}/{$intbits}\n";
		} else {
			echo "\n\n" . gettext("The IPv4 {$upperifname} address has been set to ") . "{$intip}\n";
		}
		if (count($ifdescrs) == "1" or $interface = "lan") {
			if ($debug) {
				echo "ifdescrs count is " . count($ifdescrs) . "\n";
				echo "interface is {$interface} \n";
			}
			echo gettext('You can now access the webConfigurator by opening the following URL in your web browser:') . "\n";
			if(!empty($config['system']['webgui']['port'])) {
				$webuiport = $config['system']['webgui']['port'];
				echo "		{$config['system']['webgui']['protocol']}://{$intip}:{$port}/\n";
			} else {
				echo "		{$config['system']['webgui']['protocol']}://{$intip}/\n";	
			}
		}
	}

	echo "\n" . gettext('Press <ENTER> to continue.');

	fgets($fp);
	fclose($fp);
		
?>