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#!/usr/local/bin/php-cgi -f
<?php
/*
	rc.linkup - devd hotplug actions
	part of pfSense

	Copyright (C) 2003-2005 Scott Ullrich <sullrich@gmail.com>.
	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("globals.inc");
require_once("config.inc");
require_once("filter.inc");
require_once("shaper.inc");
require_once("interfaces.inc");

if (platform_booting()) {
	return;
}

function handle_argument_group($iface, $argument2) {
	global $config;

	if (!is_array($config['interfaces'][$iface])) {
		log_error("Cannot find interface configuration for {$iface}");
		return;
	}

	if (!isset($config['interfaces'][$iface]['enable'])) {
		log_error("Linkup detected on disabled interface...Ignoring");
		return;
	}

	$ipaddr = $config['interfaces'][$iface]['ipaddr'];
	$ip6addr = $config['interfaces'][$iface]['ipaddrv6'];
	$staticv4 = false;
	if (empty($ipaddr)) {
		$staticv4 = true;
	} else {
		$staticv4 = is_ipaddrv4($ipaddr);
	}
	$staticv6 = false;
	if (empty($ip6addr)) {
		$staticv6 = true;
	} else {
		$staticv6 = is_ipaddrv6($ip6addr);
	}
	if ($staticv4 === true && $staticv6 === true) {
		$friendly = convert_friendly_interface_to_friendly_descr($iface);
		log_error("Hotplug event detected for {$friendly}({$iface}) static IP ({$ipaddr} {$ip6addr})");
		interfaces_staticarp_configure($iface);
		switch ($argument2) {
			case 'start':
			case 'up':
				$iface = get_real_interface($iface);
				/* NOTE: Do not generate event for OpenVPN since the daemon does that for us. */
				if (substr($iface, 0, 4) != "ovpn") {
					send_event("interface newip {$iface}");
				}
				break;
		}
	} else {
		switch ($argument2) {
			case "stop":
			case "down":
				log_error("DEVD Ethernet detached event for {$iface}");
				interface_bring_down($iface);
				break;
			case "start":
			case "up":
				log_error("DEVD Ethernet attached event for {$iface}");
				log_error("HOTPLUG: Configuring interface {$iface}");
				// Do not try to readd to bridge otherwise em(4) has problems
				interface_configure($iface, true, true);
				break;
		}
	}
}

if (isset($_GET['interface'])) {
	if (!empty($_GET['interface'])) {
		$realiface = $_GET['interface'];
	}
	$action = $_GET['action'];
} else {
	if ($argc < 3) {
		log_error("HOTPLUG event: The required number of parameters not passed!");
		return;
	}
	$action = $argv[1];
	$realiface = $argv[2];
}

switch ($action) {
	case "start":
	case "stop":
		break;
	default:
		log_error("HOTPLUG event: Action parameter ($action) passed is wrong - only start/stop/up/down are allowed!");
		return;
		/* NOTREACHED */
		break;
}

if (!empty($realiface)) {
	if (substr($realiface, 0, 4) == 'ovpn') {
		log_error("Ignoring link event for ovpn interface");
		return;
	}
	$rclinkuplock = lock("rclinkup{$realiface}", LOCK_EX);
	$interface = convert_real_interface_to_friendly_interface_name($realiface);
	if (!empty($interface)) {
		handle_argument_group($interface, $action);
	}
	if ($action == 'start') {
		/* Check if there is any child on this one as ppp types and trigger them */
		if (is_array($config['ppps']['ppp'])) {
			foreach ($config['ppps']['ppp'] as $pppidx => $ppp) {
				if ($ppp['type'] == 'ppp') {
					continue;
				}
				$ports = explode(',', $ppp['ports']);
				foreach ($ports as $pid => $parent_if) {
					/* The loop here is because ppp types can have real and assigned interfaces as members */
					$tmpiface = get_real_interface($parent_if);
					if ($tmpiface != $realiface) {
						continue;
					}
					$tmpiface = convert_real_interface_to_friendly_interface_name($ppp['if']);
					if (!empty($tmpiface)) {
						interface_configure($tmpiface, true, true);
					}
				}
			}
		}
	}
	filter_configure();
	unlock($rclinkuplock);
}
?>
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