<?php
/* $Id$ */
/*
        lcdproc.inc
        Copyright (C) 2007 Seth Mos <seth.mos@xs4all.nl>
        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.
*/

	require_once("config.inc");
	require_once("functions.inc");

	/* LCDproc */
	define('LCDPROC_RCFILE', '/usr/local/etc/rc.d/lcdproc.sh');
	define('LCDPROC_CLIENT', '/tmp/lcdclient.sh');
	define('LCDPROC_CONFIG','/usr/local/etc/LCDd.conf');
	define('LCDPROC_HOST','localhost');
	define('LCDPROC_PORT','13666');

	function lcdproc_notice ($msg) { syslog(LOG_NOTICE, "lcdproc: {$msg}"); }
	function lcdproc_warn ($msg) { syslog(LOG_WARNING, "lcdproc: {$msg}"); }

	function lcdproc_action ($action) {
		if (file_exists(LCDPROC_RCFILE))
			mwexec(LCDPROC_RCFILE.' '.$action);
	}

	function lcdproc_running () {
		if((int)exec('pgrep LCDd | wc -l') > 0)
			return true;
		return false;
	}	

	function lcdproc_write_config($file, $text) {
		$handle = fopen($file, 'w');
		if(!$handle) {
			lcdproc_warn("Could not open {$file} for writing.");
			exit;
		}
		fwrite($handle, $text);
		fclose($handle);
	}

	function lcdproc_write_script($file, $text) {
		$handle = fopen($file, 'wx');
		if(!$handle) {
			lcdproc_warn("Could not open {$file} for writing.");
			exit;
		}
		fwrite($handle, $text);
		fclose($handle);
		chmod($file, 0755);
	}

	function before_form_lcdproc($pkg) {
		global $config;

		config_lock();		
		
		config_unlock();
	}

	function before_form_lcdproc_screens($pkg) {
		global $config;

		config_lock();		
		
		config_unlock();
	}

	function validate_form_lcdproc($post, $input_errors) {
		if($post['comport']) {
			switch($post['comport']) {
				case "none":
					continue;
					break;
				case "com2":
					continue;
					break;
				case "ucom1":
					continue;
					break;
				case "ucom2":
					continue;
					break;
				case "lpt1":
					continue;
					break;
				default:
					$input_errors[] = "The chosen com port is not valid";
					break;
			}
		}
	}
	function validate_form_lcdproc_screens($post, $input_errors) {
		// No validation required ?!
	}

	function sync_package_lcdproc_screens() {
		sync_package_lcdproc();
	}
	function sync_package_lcdproc() {
		global $g;
		global $config;
		global $input_errors;

		config_lock();

		$lcdproc_config = $config['installedpackages']['lcdproc']['config'][0];
		$lcdproc_screens_config = $config['installedpackages']['lcdprocscreens']['config'][0];

		/* since config is written before this file invoked we don't need to read post data */
		if($lcdproc_config['enable'] && ($lcdproc_config['comport'] != "none")) {
			switch($lcdproc_config['comport']) {
				case "com2":
					$realport = "/dev/cua1";
					break;
				case "ucom1":
					$realport = "/dev/cuaU0";
					break;
				case "ucom2":
					$realport = "/dev/cuaU1";
					break;
				case "lpt1":
					$realport = "/dev/lpt0";
					break;
				default:
					lcdproc_warn("The selected com port is not valid!");
					return;
			}

			$config_text = "[server]\n";
			$config_text .= "Driver={$lcdproc_config[driver]}\n";
			$config_text .= "Bind=127.0.0.1\n";
			$config_text .= "Port=13666\n";
			$config_text .= "ReportLevel=3\n";
			$config_text .= "ReportToSyslog=yes\n";
			$config_text .= "WaitTime=5\n";
			$config_text .= "User=nobody\n";
			$config_text .= "ServerScreen=no\n";
			$config_text .= "Foreground=no\n";
			$config_text .= "DriverPath=/usr/local/lib/lcdproc/\n";
			$config_text .= "GoodBye=\"Thanks for using\"\n";
			$config_text .= "GoodBye=\"    {$g['product_name']}     \"\n";
			/* FIXME: Specific to the pyramid project */
			$config_text .= "ToggleRotateKey=Enter\n";
			$config_text .= "PrevScreenKey=Left\n";
			$config_text .= "NextScreenKey=Right\n";
			$config_text .= "ScrollUpKey=Up\n";
			$config_text .= "ScrollDownKey=Down\n";
			/* FIXME: pyramid test menu */
			$config_text .= "[menu]\n";
			$config_text .= "MenuKey=Escape\n";
			$config_text .= "EnterKey=Enter\n";
			$config_text .= "UpKey=Up\n";
			$config_text .= "DownKey=Down\n";

			/* lcdproc default driver definitions */
			switch($lcdproc_config[driver]) {
				case "bayrad":
					$config_text .= "[{$lcdproc_config[driver]}]\n";
					$config_text .= "Device={$realport}\n";
					$config_text .= "Speed=9600\n";
					break;
				case "CFontz":
					$config_text .= "[{$lcdproc_config[driver]}]\n";
					$config_text .= "Device={$realport}\n";
					$config_text .= "Size=20x4\n";
					$config_text .= "Contrast=350\n";
					$config_text .= "Brightness=1000\n";
					$config_text .= "OffBrightness=0\n";
					$config_text .= "Speed=9600\n";
					$config_text .= "NewFirmware=no\n";
					$config_text .= "Reboot=no\n";
					break;
				case "CFontz633":
					$config_text .= "[{$lcdproc_config[driver]}]\n";
					$config_text .= "Device={$realport}\n";
					$config_text .= "Size=16x2\n";
					$config_text .= "Contrast=350\n";
					$config_text .= "Brightness=1000\n";
					$config_text .= "OffBrightness=50\n";
					$config_text .= "Speed=19200\n";
					$config_text .= "NewFirmware=yes\n";
					$config_text .= "Reboot=yes\n";
					break;
				case "CFontzPacket":
					$config_text .= "[{$lcdproc_config[driver]}]\n";
					$config_text .= "Device={$realport}\n";
					$config_text .= "Model=635\n";
					$config_text .= "Size=20x4\n";
					$config_text .= "Contrast=350\n";
					$config_text .= "Brightness=1000\n";
					$config_text .= "OffBrightness=50\n";
					$config_text .= "Speed=115200\n";
					$config_text .= "NewFirmware=yes\n";
					$config_text .= "Reboot=yes\n";
					break;
				case "curses":
					$config_text .= "[{$lcdproc_config[driver]}]\n";
					$config_text .= "Foreground=blue\n";
					$config_text .= "Background=cyan\n";
					$config_text .= "Backlight=red\n";
					$config_text .= "Size=16x4\n";
					$config_text .= "TopLeftX=7\n";
					$config_text .= "TopLeftY=7\n";
					$config_text .= "UseACS=no\n";
					break;
				case "CwLynx":
					$config_text .= "[{$lcdproc_config[driver]}]\n";
					$config_text .= "Model=12232\n";
					$config_text .= "Device={$realport}\n";
					$config_text .= "Size=20x4\n";
					$config_text .= "Speed=19200\n";
					$config_text .= "Reboot=no\n";
					break;
				case "pyramid":
					$config_text .= "[{$lcdproc_config[driver]}]\n";
					$config_text .= "Device={$realport}\n";
					break;
				case "ea65":
					$config_text .= "[{$lcdproc_config[driver]}]\n";
					$config_text .= "Device={$realport}\n";
					$config_text .= "OffBrightness=0\n";
					$config_text .= "Brightness=500\n";
					break;
				default:
					lcdproc_warn("The chosen lcdproc driver is not a valid choice");
					unset($lcdproc_config[driver]);
			}

			/* generate rc file start and stop */
			$options = "";
			if(is_array($lcdproc_screens_config)) {
				foreach($lcdproc_screens_config as $name => $screen) {
					if($screen == "on") {
						switch($name) {
							case "scr_cpu":
								$options .= "P ";
								break;
							case "scr_time":
								$options .= "O ";
								break;
							case "scr_load":
								$options .= "L ";
								break;
							case "scr_uptime":
								$options .= "U ";
								break;
						}
					}
				}
			}
			$client_script = <<<EOD
#!/bin/sh

# script starts a lcd client and always keeps it active.
counter=1
while [ "\$counter" -ne 0 ]
do
	# start the lcd client, lcdproc client for now until PHP client is finished
	/usr/local/bin/lcdproc -f $options
	#/usr/local/bin/php -f /usr/local/pkg/lcdproc_client.php
	sleep 10
done

EOD;

			/* generate rc file start and stop */
			$stop = <<<EOD

if [ `pgrep LCDd | wc -l` != 0  ]; then
	/usr/bin/killall LCDd
	/usr/bin/killall lcdclient.sh
	while [ `pgrep LCDd | wc -l` != 0 ]; do
		sleep 1
	done
	while [ `pgrep lcdclient.sh | wc -l` != 0 ]; do
		sleep 1
	done
fi

EOD;
			$start = $stop ."\n";
			$start .= "\t/usr/local/sbin/LCDd -c ". LCDPROC_CONFIG ."\n";
			$start .= "\t". LCDPROC_CLIENT ." &\n";

			/* write out the configuration */
			conf_mount_rw();
			lcdproc_write_script(LCDPROC_CLIENT, $client_script);
			lcdproc_write_config(LCDPROC_CONFIG, $config_text);
			write_rcfile(array(
					'file' => 'lcdproc.sh',
					'start' => $start,
					'stop' => $stop
					));
			conf_mount_ro();

			/* if lcdproc not running start it */
			if(!lcdproc_running()) {
				lcdproc_notice("Starting service lcdproc");
				lcdproc_action('start');	
			}
			/* or restart lcdproc if settings were changed */
			elseif($_POST['comport']) {
				lcdproc_notice("Restarting service lcdproc");
				lcdproc_action('restart');
			}
		}

		if((! $lcdproc_config['driver']) || ($lcdproc_config['comport'] == "none")) {
			/* no parameters user does not want lcdproc running */
			/* lets stop the service and remove the rc file */

			if(file_exists(LCDPROC_RCFILE)) {
				if(!$lcdproc_config['enable']) {
					lcdproc_notice('Stopping service: lcdproc disabled');
				} else {
					lcdproc_notice('Stopping service: no com port selected');
				}
				lcdproc_action('stop');
				conf_mount_rw();
				unlink(LCDPROC_RCFILE);
				unlink(LCDPROC_CLIENT);
				unlink(LCDPROC_CONFIG);
				conf_mount_ro();
			}
		}
		config_unlock();
	}

?>