<?php
/*
	apcupsd.inc
	part of pfSense (https://www.pfSense.org/)
	Copyright (C) 2013-2015 Danilo G. Baio <dbaio@bsd.com.br>
	Copyright (C) 2015 ESF, LLC
	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("util.inc");
require_once("functions.inc");
require_once("pkg-utils.inc");
require_once("globals.inc");

function php_install_apcupsd() {
	sync_package_apcupsd();
	apccontrol_scripts_install();
}

function php_deinstall_apcupsd() {
	global $config, $g;

	$pfs_version = substr(trim(file_get_contents("/etc/version")), 0, 3);
	if ($pfs_version == "2.1" || $pfs_version == "2.2") {
		define('APCUPSD_BASE', '/usr/pbi/apcupsd-' . php_uname("m"));
	} else {
		define('APCUPSD_BASE', '/usr/local');
	}

	unlink_if_exists(APCUPSD_BASE . "/etc/rc.d/apcupsd.sh");
	unlink_if_exists(APCUPSD_BASE . "/etc/apcupsd/apcupsd.conf");
	unlink_if_exists("/var/log/apcupsd/apcupsd.log");
	unlink_if_exists("/var/run/apcupsd/apcupsd.pid");

	if (is_dir("/var/log/apcupsd")) {
		exec("/bin/rm -rf /var/log/apcupsd/");
	}
	if (is_dir("/var/run/apcupsd")) {
		exec("/bin/rm -rf /var/run/apcupsd/");
	}

}

function validate_input_apcupsd($post, &$input_errors) {

	if (isset($post['apcupsdenabled'])) {
		if ($post['polltime'] != '' && !is_numericint($post['polltime'])) {
			$input_errors[] = 'Poll Time is not numeric.';
		}

		if ($post['onbatterydelay'] != '' && !is_numericint($post['onbatterydelay'])) {
			$input_errors[] = 'OnBattery Delay is not numeric.';
		}

		if ($post['batterylevel'] != '' && !is_numericint($post['batterylevel'])) {
			$input_errors[] = 'Battery Level is not numeric.';
		}

		if ($post['minutes'] != '' && !is_numericint($post['minutes'])) {
			$input_errors[] = 'Minutes is not numeric.';
		}

		if ($post['timeout'] != '' && !is_numericint($post['timeout'])) {
			$input_errors[] = 'Timeout is not numeric.';
		}

		if ($post['annoy'] != '' && !is_numericint($post['annoy'])) {
			$input_errors[] = 'Annoy is not numeric.';
		}

		if ($post['annoydelay'] != '' && !is_numericint($post['annoydelay'])) {
			$input_errors[] = 'Annoy Delay is not numeric.';
		}

		if ($post['killdelay'] != '' && !is_numericint($post['killdelay'])) {
			$input_errors[] = 'Kill Delay is not numeric.';
		}

		if ($post['nisip'] != '') {
			if (!is_ipaddr_configured($post['nisip']) && !preg_match("/(127.0.0.1|0.0.0.0)/", $post['nisip'])) {
				$input_errors[] = 'NIS Ip is not a configured IP address.';
			}
		}

		if ($post['nisport'] != '') {
			if (!preg_match("/^\d+$/", $post['nisport'])) {
				$input_errors[] = 'NIS Port is not numeric.';
			}
		}

		if ($post['emailnotification'] == 'smtpbuiltin') {
			if (empty($post['smtphost'])) {
					$input_errors[] = 'SMTP Host cannot be empty if SMTP builtin is enabled.';
			}

			if (empty($post['smtpport'])) {
					$input_errors[] = 'SMTP Port cannot be empty if SMTP builtin is enabled.';
			} elseif (!is_port($post['smtpport'])) {
				$input_errors[]='SMTP Port is not a valid port.';
			}

			if (empty($post['smtpfrom'])) {
					$input_errors[] = 'From field cannot be empty if SMTP builtin is enabled.';
			}

			if (empty($post['smtpto'])) {
					$input_errors[] = 'To field cannot be empty if SMTP builtin is enabled.';
			}
		}

	}
}

function sync_package_apcupsd() {
	global $config, $g;

	conf_mount_rw();

	$pfs_version = substr(trim(file_get_contents("/etc/version")), 0, 3);
	if ($pfs_version == "2.1" || $pfs_version == "2.2") {
		define('APCUPSD_BASE', '/usr/pbi/apcupsd-' . php_uname("m"));
	} else {
		define('APCUPSD_BASE', '/usr/local');
	}

	// check apcupsd settings
	if (is_array($config['installedpackages']['apcupsd'])) {
		$apcupsd_config = $config['installedpackages']['apcupsd']['config'][0];
		if ($apcupsd_config['apcupsdenabled'] == "on") {
			$upsname = $apcupsd_config['upsname'];
			$upscable = $apcupsd_config['upscable'];
			$upstype = $apcupsd_config['upstype'];
			$device = ($apcupsd_config['device'] != '' ? "DEVICE {$apcupsd_config['device']}" : "#DEVICE");
			$polltime = $apcupsd_config['polltime'] ?: "60";
			$onbatterydelay = $apcupsd_config['onbatterydelay'] ?: "6";
			$batterylevel= $apcupsd_config['batterylevel'] ?: "5";
			$minutes = $apcupsd_config['minutes'] ?: "3";
			$timeout = $apcupsd_config['timeout'] ?: "0";
			$annoy = $apcupsd_config['annoy'] ?: "300";
			$annoydelay = $apcupsd_config['annoydelay'] ?: "60";
			$killdelay = $apcupsd_config['killdelay'] ?: "0";
			$netserver = $apcupsd_config['netserver'];
			$nisip= $apcupsd_config['nisip'] ?: "0.0.0.0";
			$nisport = $apcupsd_config['nisport'] ?: "3551";
			$upsclass = $apcupsd_config['upsclass'];
			$upsmode = $apcupsd_config['upsmode'];
			$lockfile= $apcupsd_config['lockfile'] ?: "/var/tmp";
			$emailnotification = $apcupsd_config['emailnotification'];

			include("/usr/local/pkg/apcupsd.conf.php");
			file_put_contents(APCUPSD_BASE . "/etc/apcupsd/apcupsd.conf", $apcupsdconf, LOCK_EX);
		}
	}

	// RC FILE
	$apcupsd_rcfile="/usr/local/etc/rc.d/apcupsd.sh";
	if (is_array($apcupsd_config) && $apcupsd_config['apcupsdenabled']=="on") {

		$apcupsd_start = "echo \"Starting APC UPS Daemon...\"\n";
		$apcupsd_start .= "	if [ ! -d {$lockfile} ]; then \n";
		$apcupsd_start .= "		/bin/mkdir -p {$lockfile} \n";
		$apcupsd_start .= "	fi \n";
		$apcupsd_start .= "	/bin/rm -f {$lockfile}/*LCK* 2>/dev/null \n";
		if ($apcupsd_config['killonpowerfail'] == "on") {
			$apcupsd_start .= "	" . APCUPSD_BASE . "/sbin/apcupsd --kill-on-powerfail";
		} else {
			$apcupsd_start .= "	" . APCUPSD_BASE . "/sbin/apcupsd";
		}

		$apcupsd_stop = "echo \"Stopping APC UPS Daemon...\"\n";
		$apcupsd_stop .= "	/usr/bin/killall apcupsd\n";
		$apcupsd_stop .= "	/bin/sleep 5";

		/* write out rc.d start/stop file */
		write_rcfile(array(
			"file" => "apcupsd.sh",
			"start" => "$apcupsd_start",
			"stop" => "$apcupsd_stop"
			)
		);

		restart_service("apcupsd");

	} else {
		stop_service("apcupsd");
		unlink_if_exists($apcupsd_rcfile);
	}

	apccontrol_scripts_install($emailnotification);
	conf_mount_ro();
}

function apccontrol_scripts_install($emailnotification) {
	global $config, $g;

	if ($pfs_version == "2.1" || $pfs_version == "2.2") {
		define('APCUPSD_BASE', '/usr/pbi/apcupsd-' . php_uname("m"));
	} else {
		define('APCUPSD_BASE', '/usr/local');
	}

	$apcstatus['commfailure'] = "\$HOSTNAME - Communications with UPS \$1 lost";
	$apcstatus['commok'] = "\$HOSTNAME - Communications with UPS \$1 restored";
	$apcstatus['onbattery'] = "\$HOSTNAME - Power failure. Running on UPS \$1 batteries";
	$apcstatus['offbattery'] = "\$HOSTNAME - UPS \$1 Power has returned...";
	$apcstatus['changeme'] = "\$HOSTNAME - Emergency! UPS batteries have failed. Change them NOW";

	$apccontrol_scripts = array("offbattery","onbattery","commfailure","commok","changeme");
	foreach ($apccontrol_scripts as $apccontrol_script) {

		if ($emailnotification == "smtpbuiltin") {

			if (is_array($config['installedpackages']['apcupsd'])) {
				$apcupsd_config = $config['installedpackages']['apcupsd']['config'][0];
				if ($apcupsd_config['apcupsdenabled'] == "on") {
					$smtphost = $apcupsd_config['smtphost'] ?: "0.0.0.0";
					$smtpport = $apcupsd_config['smtpport'] ?: "25";
					$smtpfrom = $apcupsd_config['smtpfrom'];
					$smtpto = $apcupsd_config['smtpto'];
					$smtpcc = $apcupsd_config['smtpcc'];
					if (empty($smtpcc)) {
						$smtpcc_cmd = "";
					} else {
						$smtpcc_cmd = "-c {$smtpcc}";
					}
				}
			}

			$pfSense_hostname = gethostname();

			$apccontrol_script_file =<<<EOF
#!/bin/sh

HOSTNAME="{$pfSense_hostname}"
MSG="{$apcstatus["{$apccontrol_script}"]}"
#
(
   echo " "
   echo "\$MSG"
   echo " "
   /usr/local/sbin/apcaccess status
) | /usr/local/sbin/smtp -s "\$MSG" -h {$smtphost}:{$smtpport} -f {$smtpfrom} {$smtpcc_cmd} {$smtpto}
exit 0

EOF;

		} else {
		$apccontrol_script_file =<<<EOF
#!/bin/sh

/usr/local/bin/php -f /usr/local/pkg/apcupsd_mail.php {$apccontrol_script} > /dev/null

exit 0

EOF;
		}

		file_put_contents(APCUPSD_BASE . "/etc/apcupsd/" . $apccontrol_script, $apccontrol_script_file, LOCK_EX);
	}

}

function check_nis_running_apcupsd() {
	global $config, $g;

	if (is_array($config['installedpackages']['apcupsd'])) {
		$apcupsd_config = $config['installedpackages']['apcupsd']['config'][0];
		if ($apcupsd_config['apcupsdenabled'] == "on" && $apcupsd_config['netserver'] == "on" ) {
			return(true);
		}
	} else {
		return(false);
	}
}

function check_nis_ip_apcupsd() {
	global $config, $g;
	if (is_array($config['installedpackages']['apcupsd'])) {
		$apcupsd_config = $config['installedpackages']['apcupsd']['config'][0];
		if ($apcupsd_config['apcupsdenabled']=="on" && $apcupsd_config['netserver']=="on" ) {
			return($apcupsd_config['nisip']);
		}
	} else {
		return(false);
	}
}

function check_nis_port_apcupsd() {
	global $config, $g;
	if (is_array($config['installedpackages']['apcupsd'])) {
		$apcupsd_config = $config['installedpackages']['apcupsd']['config'][0];
		if ($apcupsd_config['apcupsdenabled']=="on" && $apcupsd_config['netserver']=="on" ) {
			return($apcupsd_config['nisport']);
		}
	} else {
		return(false);
	}
}

?>