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<?php
/*
	interfaces_assign.php
	part of m0n0wall (http://m0n0.ch/wall)
	Written by Jim McBeath based on existing m0n0wall files

	Copyright (C) 2013-2015 Electric Sheep Fencing, LP
	Copyright (C) 2003-2005 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.
*/
/*
	pfSense_BUILDER_BINARIES:	/bin/rm
	pfSense_MODULE:	interfaces
*/

##|+PRIV
##|*IDENT=page-interfaces-assignnetworkports
##|*NAME=Interfaces: Assign network ports page
##|*DESCR=Allow access to the 'Interfaces: Assign network ports' page.
##|*MATCH=interfaces_assign.php*
##|-PRIV

$pgtitle = array(gettext("Interfaces"), gettext("Assign network ports"));
$shortcut_section = "interfaces";

require("guiconfig.inc");
require("functions.inc");
require_once("filter.inc");
require("shaper.inc");
require("ipsec.inc");
require("vpn.inc");
require("captiveportal.inc");
require_once("rrd.inc");

function interface_assign_description($portinfo, $portname) {
	global $ovpn_descrs;
	if ($portinfo['isvlan']) {
		$descr = sprintf(gettext('VLAN %1$s on %2$s'), $portinfo['tag'], $portinfo['if']);
		if ($portinfo['descr']) {
			$descr .= " (" . $portinfo['descr'] . ")";
		}
	} elseif ($portinfo['iswlclone']) {
		$descr = $portinfo['cloneif'];
		if ($portinfo['descr']) {
			$descr .= " (" . $portinfo['descr'] . ")";
		}
	} elseif ($portinfo['isppp']) {
		$descr = $portinfo['descr'];
	} elseif ($portinfo['isbridge']) {
		$descr = strtoupper($portinfo['bridgeif']);
		if ($portinfo['descr']) {
			$descr .= " (" . $portinfo['descr'] . ")";
		}
	} elseif ($portinfo['isgre']) {
		$descr = "GRE {$portinfo['remote-addr']}";
		if ($portinfo['descr']) {
			$descr .= " (" . $portinfo['descr'] . ")";
		}
	} elseif ($portinfo['isgif']) {
		$descr = "GIF {$portinfo['remote-addr']}";
		if ($portinfo['descr']) {
			$descr .= " (" . $portinfo['descr'] . ")";
		}
	} elseif ($portinfo['islagg']) {
		$descr = strtoupper($portinfo['laggif']);
		if ($portinfo['descr']) {
			$descr .= " (" . $portinfo['descr'] . ")";
		}
	} elseif ($portinfo['isqinq']) {
		$descr = $portinfo['descr'];
	} elseif (substr($portname, 0, 4) == 'ovpn') {
		$descr = $portname . " (" . $ovpn_descrs[substr($portname, 5)] . ")";
	} else {
		$descr = $portname . " (" . $portinfo['mac'] . ")";
	}

	return htmlspecialchars($descr);
}

/*
	In this file, "port" refers to the physical port name,
	while "interface" refers to LAN, WAN, or OPTn.
*/

/* get list without VLAN interfaces */
$portlist = get_interface_list();

/* add wireless clone interfaces */
if (is_array($config['wireless']['clone']) && count($config['wireless']['clone'])) {
	foreach ($config['wireless']['clone'] as $clone) {
		$portlist[$clone['cloneif']] = $clone;
		$portlist[$clone['cloneif']]['iswlclone'] = true;
	}
}

/* add VLAN interfaces */
if (is_array($config['vlans']['vlan']) && count($config['vlans']['vlan'])) {
	foreach ($config['vlans']['vlan'] as $vlan) {
		$portlist[$vlan['vlanif']] = $vlan;
		$portlist[$vlan['vlanif']]['isvlan'] = true;
	}
}

/* add Bridge interfaces */
if (is_array($config['bridges']['bridged']) && count($config['bridges']['bridged'])) {
	foreach ($config['bridges']['bridged'] as $bridge) {
		$portlist[$bridge['bridgeif']] = $bridge;
		$portlist[$bridge['bridgeif']]['isbridge'] = true;
	}
}

/* add GIF interfaces */
if (is_array($config['gifs']['gif']) && count($config['gifs']['gif'])) {
	foreach ($config['gifs']['gif'] as $gif) {
		$portlist[$gif['gifif']] = $gif;
		$portlist[$gif['gifif']]['isgif'] = true;
	}
}

/* add GRE interfaces */
if (is_array($config['gres']['gre']) && count($config['gres']['gre'])) {
	foreach ($config['gres']['gre'] as $gre) {
		$portlist[$gre['greif']] = $gre;
		$portlist[$gre['greif']]['isgre'] = true;
	}
}

/* add LAGG interfaces */
if (is_array($config['laggs']['lagg']) && count($config['laggs']['lagg'])) {
	foreach ($config['laggs']['lagg'] as $lagg) {
		$portlist[$lagg['laggif']] = $lagg;
		$portlist[$lagg['laggif']]['islagg'] = true;
		/* LAGG members cannot be assigned */
		$lagifs = explode(',', $lagg['members']);
		foreach ($lagifs as $lagif) {
			if (isset($portlist[$lagif])) {
				unset($portlist[$lagif]);
			}
		}
	}
}

/* add QinQ interfaces */
if (is_array($config['qinqs']['qinqentry']) && count($config['qinqs']['qinqentry'])) {
	foreach ($config['qinqs']['qinqentry'] as $qinq) {
		$portlist["vlan{$qinq['tag']}"]['descr'] = "VLAN {$qinq['tag']}";
		$portlist["vlan{$qinq['tag']}"]['isqinq'] = true;
		/* QinQ members */
		$qinqifs = explode(' ', $qinq['members']);
		foreach ($qinqifs as $qinqif) {
			$portlist["vlan{$qinq['tag']}_{$qinqif}"]['descr'] = "QinQ {$qinqif}";
			$portlist["vlan{$qinq['tag']}_{$qinqif}"]['isqinq'] = true;
		}
	}
}

/* add PPP interfaces */
if (is_array($config['ppps']['ppp']) && count($config['ppps']['ppp'])) {
	foreach ($config['ppps']['ppp'] as $pppid => $ppp) {
		$portname = $ppp['if'];
		$portlist[$portname] = $ppp;
		$portlist[$portname]['isppp'] = true;
		$ports_base = basename($ppp['ports']);
		if (isset($ppp['descr'])) {
			$portlist[$portname]['descr'] = strtoupper($ppp['if']). "({$ports_base}) - {$ppp['descr']}";
		} else if (isset($ppp['username'])) {
			$portlist[$portname]['descr'] = strtoupper($ppp['if']). "({$ports_base}) - {$ppp['username']}";
		} else {
			$portlist[$portname]['descr'] = strtoupper($ppp['if']). "({$ports_base})";
		}
	}
}

$ovpn_descrs = array();
if (is_array($config['openvpn'])) {
	if (is_array($config['openvpn']['openvpn-server'])) {
		foreach ($config['openvpn']['openvpn-server'] as $s) {
			$ovpn_descrs[$s['vpnid']] = $s['description'];
		}
	}
	if (is_array($config['openvpn']['openvpn-client'])) {
		foreach ($config['openvpn']['openvpn-client'] as $c) {
			$ovpn_descrs[$c['vpnid']] = $c['description'];
		}
	}
}

if (isset($_POST['add_x']) && isset($_POST['if_add'])) {
	/* Be sure this port is not being used */
	$portused = false;
	foreach ($config['interfaces'] as $ifname => $ifdata) {
		if ($ifdata['if'] == $_POST['if_add']) {
			$portused = true;
			break;
		}
	}

	if ($portused === false) {
		/* find next free optional interface number */
		if (!$config['interfaces']['lan']) {
			$newifname = gettext("lan");
			$descr = gettext("LAN");
		} else {
			for ($i = 1; $i <= count($config['interfaces']); $i++) {
				if (!$config['interfaces']["opt{$i}"]) {
					break;
				}
			}
			$newifname = 'opt' . $i;
			$descr = "OPT" . $i;
		}

		$config['interfaces'][$newifname] = array();
		$config['interfaces'][$newifname]['descr'] = $descr;
		$config['interfaces'][$newifname]['if'] = $_POST['if_add'];
		if (preg_match($g['wireless_regex'], $_POST['if_add'])) {
			$config['interfaces'][$newifname]['wireless'] = array();
			interface_sync_wireless_clones($config['interfaces'][$newifname], false);
		}

		uksort($config['interfaces'], "compare_interface_friendly_names");

		/* XXX: Do not remove this. */
		unlink_if_exists("{$g['tmp_path']}/config.cache");

		write_config();

		$savemsg = gettext("Interface has been added.");
	}

} else if (isset($_POST['apply'])) {
	if (file_exists("/var/run/interface_mismatch_reboot_needed")) {
		system_reboot();
		$rebootingnow = true;
	} else {
		write_config();

		$retval = filter_configure();
		$savemsg = get_std_save_message($retval);

		if (stristr($retval, "error") <> true) {
			$savemsg = get_std_save_message($retval);
		} else {
			$savemsg = $retval;
		}
	}

} else if (isset($_POST['Submit'])) {

	unset($input_errors);

	/* input validation */

	/* Build a list of the port names so we can see how the interfaces map */
	$portifmap = array();
	foreach ($portlist as $portname => $portinfo) {
		$portifmap[$portname] = array();
	}

	/* Go through the list of ports selected by the user,
	build a list of port-to-interface mappings in portifmap */
	foreach ($_POST as $ifname => $ifport) {
		if (($ifname == 'lan') || ($ifname == 'wan') || (substr($ifname, 0, 3) == 'opt')) {
			$portifmap[$ifport][] = strtoupper($ifname);
		}
	}

	/* Deliver error message for any port with more than one assignment */
	foreach ($portifmap as $portname => $ifnames) {
		if (count($ifnames) > 1) {
			$errstr = sprintf(gettext('Port %1$s '.
				' was assigned to %2$s' .
				' interfaces:'), $portname, count($ifnames));

			foreach ($portifmap[$portname] as $ifn) {
				$errstr .= " " . convert_friendly_interface_to_friendly_descr(strtolower($ifn)) . " (" . $ifn . ")";
			}

			$input_errors[] = $errstr;
		} else if (count($ifnames) == 1 && preg_match('/^bridge[0-9]/', $portname) && is_array($config['bridges']['bridged']) && count($config['bridges']['bridged'])) {
			foreach ($config['bridges']['bridged'] as $bridge) {
				if ($bridge['bridgeif'] != $portname) {
					continue;
				}

				$members = explode(",", strtoupper($bridge['members']));
				foreach ($members as $member) {
					if ($member == $ifnames[0]) {
						$input_errors[] = sprintf(gettext("You cannot set port %s to interface %s because this interface is a member of %s."), $portname, $member, $portname);
						break;
					}
				}
			}
		}
	}

	if (is_array($config['vlans']['vlan'])) {
		foreach ($config['vlans']['vlan'] as $vlan) {
			if (does_interface_exist($vlan['if']) == false) {
				$input_errors[] = "Vlan parent interface {$vlan['if']} does not exist anymore so vlan id {$vlan['tag']} cannot be created please fix the issue before continuing.";
			}
		}
	}

	if (!$input_errors) {
		/* No errors detected, so update the config */
		foreach ($_POST as $ifname => $ifport) {

			if (($ifname == 'lan') || ($ifname == 'wan') || (substr($ifname, 0, 3) == 'opt')) {

				if (!is_array($ifport)) {
					$reloadif = false;
					if (!empty($config['interfaces'][$ifname]['if']) && $config['interfaces'][$ifname]['if'] <> $ifport) {
						interface_bring_down($ifname);
						/* Mark this to be reconfigured in any case. */
						$reloadif = true;
					}
					$config['interfaces'][$ifname]['if'] = $ifport;
					if (isset($portlist[$ifport]['isppp'])) {
						$config['interfaces'][$ifname]['ipaddr'] = $portlist[$ifport]['type'];
					}

					if (substr($ifport, 0, 3) == 'gre' || substr($ifport, 0, 3) == 'gif') {
						unset($config['interfaces'][$ifname]['ipaddr']);
						unset($config['interfaces'][$ifname]['subnet']);
						unset($config['interfaces'][$ifname]['ipaddrv6']);
						unset($config['interfaces'][$ifname]['subnetv6']);
					}

					/* check for wireless interfaces, set or clear ['wireless'] */
					if (preg_match($g['wireless_regex'], $ifport)) {
						if (!is_array($config['interfaces'][$ifname]['wireless'])) {
							$config['interfaces'][$ifname]['wireless'] = array();
						}
					} else {
						unset($config['interfaces'][$ifname]['wireless']);
					}

					/* make sure there is a descr for all interfaces */
					if (!isset($config['interfaces'][$ifname]['descr'])) {
						$config['interfaces'][$ifname]['descr'] = strtoupper($ifname);
					}

					if ($reloadif == true) {
						if (preg_match($g['wireless_regex'], $ifport)) {
							interface_sync_wireless_clones($config['interfaces'][$ifname], false);
						}
						/* Reload all for the interface. */
						interface_configure($ifname, true);
					}
				}
			}
		}

		write_config();

		enable_rrd_graphing();
	}
} else {
	/* yuck - IE won't send value attributes for image buttons, while Mozilla does - so we use .x/.y to find move button clicks instead... */
	unset($delbtn);
	foreach ($_POST as $pn => $pd) {
		if (preg_match("/del_(.+)_x/", $pn, $matches)) {
			$delbtn = $matches[1];
		}
	}

	if (isset($delbtn)) {
		$id = $delbtn;

		if (link_interface_to_group($id)) {
			$input_errors[] = gettext("The interface is part of a group. Please remove it from the group to continue");
		} else if (link_interface_to_bridge($id)) {
			$input_errors[] = gettext("The interface is part of a bridge. Please remove it from the bridge to continue");
		} else if (link_interface_to_gre($id)) {
			$input_errors[] = gettext("The interface is part of a gre tunnel. Please delete the tunnel to continue");
		} else if (link_interface_to_gif($id)) {
			$input_errors[] = gettext("The interface is part of a gif tunnel. Please delete the tunnel to continue");
		} else {
			unset($config['interfaces'][$id]['enable']);
			$realid = get_real_interface($id);
			interface_bring_down($id);   /* down the interface */

			unset($config['interfaces'][$id]);	/* delete the specified OPTn or LAN*/

			if (is_array($config['dhcpd']) && is_array($config['dhcpd'][$id])) {
				unset($config['dhcpd'][$id]);
				services_dhcpd_configure();
			}

			if (count($config['filter']['rule']) > 0) {
				foreach ($config['filter']['rule'] as $x => $rule) {
					if ($rule['interface'] == $id) {
						unset($config['filter']['rule'][$x]);
					}
				}
			}
			if (is_array($config['nat']['rule']) && count($config['nat']['rule']) > 0) {
				foreach ($config['nat']['rule'] as $x => $rule) {
					if ($rule['interface'] == $id) {
						unset($config['nat']['rule'][$x]['interface']);
					}
				}
			}

			write_config();

			/* If we are in firewall/routing mode (not single interface)
			 * then ensure that we are not running DHCP on the wan which
			 * will make a lot of ISP's unhappy.
			 */
			if ($config['interfaces']['lan'] && $config['dhcpd']['wan']) {
				unset($config['dhcpd']['wan']);
			}

			link_interface_to_vlans($realid, "update");

			$savemsg = gettext("Interface has been deleted.");
		}
	}
}

/* Create a list of unused ports */
$unused_portlist = array();
foreach ($portlist as $portname => $portinfo) {
	$portused = false;
	foreach ($config['interfaces'] as $ifname => $ifdata) {
		if ($ifdata['if'] == $portname) {
			$portused = true;
			break;
		}
	}
	if ($portused === false) {
		$unused_portlist[$portname] = $portinfo;
	}
}

include("head.inc");

if (file_exists("/var/run/interface_mismatch_reboot_needed")) {
	if ($_POST) {
		if ($rebootingnow) {
			$savemsg = gettext("The system is now rebooting.  Please wait.");
		} else {
			$savemsg = gettext("Reboot is needed. Please apply the settings in order to reboot.");
		}
	} else {
		$savemsg = gettext("Interface mismatch detected.  Please resolve the mismatch and click 'Apply changes'.  The firewall will reboot afterwards.");
	}
}
?>

<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
<?php include("fbegin.inc"); ?>

<form action="interfaces_assign.php" method="post" name="iform" id="iform">

<?php
if (file_exists("/tmp/reload_interfaces")) {
	echo "<p>\n";
	print_info_box_np(gettext("The interface configuration has been changed.<br />You must apply the changes in order for them to take effect."));
	echo "<br /></p>\n";
} elseif ($savemsg) {
	print_info_box($savemsg);
}

pfSense_handle_custom_code("/usr/local/pkg/interfaces_assign/pre_input_errors");
if ($input_errors) {
	print_input_errors($input_errors);
}
?>

<table width="100%" border="0" cellpadding="0" cellspacing="0" summary="interfaces assign">
	<tr><td class="tabnavtbl">
<?php
	$tab_array = array();
	$tab_array[0] = array(gettext("Interface assignments"), true, "interfaces_assign.php");
	$tab_array[1] = array(gettext("Interface Groups"), false, "interfaces_groups.php");
	$tab_array[2] = array(gettext("Wireless"), false, "interfaces_wireless.php");
	$tab_array[3] = array(gettext("VLANs"), false, "interfaces_vlan.php");
	$tab_array[4] = array(gettext("QinQs"), false, "interfaces_qinq.php");
	$tab_array[5] = array(gettext("PPPs"), false, "interfaces_ppps.php");
	$tab_array[7] = array(gettext("GRE"), false, "interfaces_gre.php");
	$tab_array[8] = array(gettext("GIF"), false, "interfaces_gif.php");
	$tab_array[9] = array(gettext("Bridges"), false, "interfaces_bridge.php");
	$tab_array[10] = array(gettext("LAGG"), false, "interfaces_lagg.php");
	display_top_tabs($tab_array);
?>
	</td></tr>
	<tr><td>
		<div id="mainarea">
			<table class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0" summary="main area">
				<tr>
					<td class="listhdrr"><?=gettext("Interface"); ?></td>
					<td class="listhdr"><?=gettext("Network port"); ?></td>
					<td class="list">&nbsp;</td>
				</tr>
<?php
			foreach ($config['interfaces'] as $ifname => $iface):
				if ($iface['descr']) {
					$ifdescr = $iface['descr'];
				} else {
					$ifdescr = strtoupper($ifname);
				}
?>
				<tr>
					<td class="listlr" valign="middle"><strong><u><span onclick="location.href='/interfaces.php?if=<?=$ifname;?>'" style="cursor: pointer;"><?=$ifdescr;?></span></u></strong></td>
					<td valign="middle" class="listr">
						<select onchange="javascript:jQuery('#savediv').show();" name="<?=$ifname;?>" id="<?=$ifname;?>">
<?php
						foreach ($portlist as $portname => $portinfo):
?>
							<option value="<?=$portname;?>" <?php if ($portname == $iface['if']) echo " selected=\"selected\"";?>>
								<?=interface_assign_description($portinfo, $portname);?>
							</option>
<?php
						endforeach;
?>
						</select>
					</td>
					<td valign="middle" class="list">
<?php
					if ($ifname != 'wan'):
?>
						<input name="del_<?=$ifname;?>" src="/themes/<?= $g['theme']; ?>/images/icons/icon_x.gif"
							title="<?=gettext("delete interface");?>"
							type="image" style="height:17;width:17;border:0"
							onclick="return confirm('<?=gettext("Do you really want to delete this interface?"); ?>')" />
<?php
					endif;
?>
					</td>
				</tr>
<?php
			endforeach;
			if (count($config['interfaces']) < count($portlist)):
?>
				<tr>
					<td class="list">
						<strong><?=gettext("Available network ports:");?></strong>
					</td>
					<td class="list">
						<select name="if_add" id="if_add">
<?php
						foreach ($unused_portlist as $portname => $portinfo):
?>
							<option value="<?=$portname;?>" <?php if ($portname == $iface['if']) echo " selected=\"selected\"";?>>
								<?=interface_assign_description($portinfo, $portname);?>
							</option>
<?php
						endforeach;
?>
						</select>
					</td>
					<td class="list">
						<input name="add" type="image" src="/themes/<?=$g['theme'];?>/images/icons/icon_plus.gif" style="width:17;height:17;border:0" title="<?=gettext("add selected interface");?>" />
					</td>
				</tr>
<?php
			endif;
?>
			</table>
		</div>
		<br />
		<div id='savediv' style='display:none'>
			<input name="Submit" type="submit" class="formbtn" value="<?=gettext("Save"); ?>" /><br /><br />
		</div>
		<ul>
			<li><span class="vexpl"><?=gettext("Interfaces that are configured as members of a lagg(4) interface will not be shown."); ?></span></li>
		</ul>
	</td></tr>
</table>
</form>
<?php include("fend.inc"); ?>
</body>
</html>
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