<?php
/* $Id$ */
/*
	services_unbound_acls.php
	part of pfSense (https://www.pfsense.org/)

	Copyright (C) 2011 Warren Baker <warren@decoy.co.za>
        Copyright (C) 2013-2015 Electric Sheep Fencing, LP
	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("guiconfig.inc");
require("unbound.inc");

$referer = (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/services_unbound_acls.php');

if (!is_array($config['unbound']['acls'])) {
	$config['unbound']['acls'] = array();
}

$a_acls = &$config['unbound']['acls'];

$id = $_GET['id'];
if (isset($_POST['aclid'])) {
	$id = $_POST['aclid'];
}

$act = $_GET['act'];
if (isset($_POST['act'])) {
	$act = $_POST['act'];
}

if ($act == "del") {
	if (!$a_acls[$id]) {
		pfSenseHeader("services_unbound_acls.php");
		exit;
	}

	unset($a_acls[$id]);
	write_config();
	mark_subsystem_dirty('unbound');
}

if ($act == "new") {
	$id = unbound_get_next_id();
}

if ($act == "edit") {
	if (isset($id) && $a_acls[$id]) {
		$pconfig = $a_acls[$id];
		$networkacl = $a_acls[$id]['row'];
	}
}

if ($_POST) {
	unset($input_errors);
	$pconfig = $_POST;

	if ($_POST['apply']) {
		$retval = services_unbound_configure();
		$savemsg = get_std_save_message($retval);
		if ($retval == 0)
			clear_subsystem_dirty('unbound');
	} else {

		// input validation - only allow 50 entries in a single ACL
		for($x=0; $x<50; $x++) {
			if (isset($pconfig["acl_network{$x}"])) {
				$networkacl[$x] = array();
				$networkacl[$x]['acl_network'] = $pconfig["acl_network{$x}"];
				$networkacl[$x]['mask'] = $pconfig["mask{$x}"];
				$networkacl[$x]['description'] = $pconfig["description{$x}"];
				if (!is_ipaddr($networkacl[$x]['acl_network'])) {
					$input_errors[] = gettext("You must enter a valid IP address for each row under Networks.");
				}

				if (is_ipaddr($networkacl[$x]['acl_network'])) {
					if (!is_subnet($networkacl[$x]['acl_network']."/".$networkacl[$x]['mask'])) {
						$input_errors[] = gettext("You must enter a valid IPv4 netmask for each IPv4 row under Networks.");
					}
				} else if (function_exists("is_ipaddrv6")) {
					if (!is_ipaddrv6($networkacl[$x]['acl_network'])) {
						$input_errors[] = gettext("You must enter a valid IPv6 address for {$networkacl[$x]['acl_network']}.");
					} else if (!is_subnetv6($networkacl[$x]['acl_network']."/".$networkacl[$x]['mask'])) {
						$input_errors[] = gettext("You must enter a valid IPv6 netmask for each IPv6 row under Networks.");
					}
				} else {
					$input_errors[] = gettext("You must enter a valid IP address for each row under Networks.");
				}
			} else if (isset($networkacl[$x])) {
				unset($networkacl[$x]);
			}
		}

		if (!$input_errors) {
			if ($pconfig['Submit'] == gettext("Save")) {
				$acl_entry = array();
				$acl_entry['aclid'] = $pconfig['aclid'];
				$acl_entry['aclname'] = $pconfig['aclname'];
				$acl_entry['aclaction'] = $pconfig['aclaction'];
				$acl_entry['description'] = $pconfig['description'];
				$acl_entry['aclid'] = $pconfig['aclid'];
				$acl_entry['row'] = array();
				foreach ($networkacl as $acl) {
					$acl_entry['row'][] = $acl;
				}

				if (isset($id) && $a_acls[$id]) {
					$a_acls[$id] = $acl_entry;
				} else {
					$a_acls[] = $acl_entry;
				}

				mark_subsystem_dirty("unbound");
				write_config();

				pfSenseHeader("/services_unbound_acls.php");
				exit;
			}

		}
	}
}

$closehead = false;
$pgtitle = "Services: DNS Resolver: Access Lists";
$shortcut_section = "resolver";
include("head.inc");

?>

<script type="text/javascript" src="/javascript/jquery.ipv4v6ify.js"></script>
<script type="text/javascript" src="/javascript/row_helper.js"></script>

<script type="text/javascript">
//<![CDATA[
	rowname[0] = "acl_network";
	rowtype[0] = "textbox,ipv4v6";
	rowsize[0] = "30";

	rowname[1] = "mask";
	rowtype[1] = "select,ipv4v6";
	rowsize[1] = "1";

	rowname[2] = "description";
	rowtype[2] = "textbox";
	rowsize[2] = "40";
//]]>
</script>
</head>

<body>

<?php include("fbegin.inc"); ?>
<form action="services_unbound_acls.php" method="post" name="iform" id="iform">
<?php if ($input_errors) print_input_errors($input_errors); ?>
<?php if ($savemsg) print_info_box($savemsg); ?>
<?php if (is_subsystem_dirty('unbound')): ?><br/>
<?php print_info_box_np(gettext("The configuration of the DNS Resolver, has been changed") . ".<br />" . gettext("You must apply the changes in order for them to take effect."));?><br />
<?php endif; ?>

<table width="100%" border="0" cellpadding="0" cellspacing="0" summary="services unbound acls">
	<tbody>
		<tr>
			<td class="tabnavtbl">
				<?php
					$tab_array = array();
					$tab_array[] = array(gettext("General Settings"), false, "/services_unbound.php");
					$tab_array[] = array(gettext("Advanced settings"), false, "services_unbound_advanced.php");
					$tab_array[] = array(gettext("Access Lists"), true, "/services_unbound_acls.php");
					display_top_tabs($tab_array, true);
				?>
			</td>
		</tr>
		<tr>
			<td id="mainarea">
				<div class="tabcont">
					<?php if($act=="new" || $act=="edit"): ?>
						<input name="aclid" type="hidden" value="<?=$id;?>" />
						<input name="act" type="hidden" value="<?=$act;?>" />

					<table width="100%" border="0" cellpadding="6" cellspacing="0" summary="main area">
						<tr>
							<td colspan="2" valign="top" class="listtopic"><?=ucwords(sprintf(gettext("%s Access List"),$act));?></td>
						</tr>
						<tr>
							<td width="22%" valign="top" class="vncellreq"><?=gettext("Access List name");?></td>
							<td width="78%" class="vtable">
								<input name="aclname" type="text" class="formfld" id="aclname" size="30" maxlength="30" value="<?=htmlspecialchars($pconfig['aclname']);?>" />
								<br />
								<span class="vexpl"><?=gettext("Provide an Access List name.");?></span>
							</td>
						</tr>
						<tr>
							<td width="22%" valign="top" class="vncellreq"><?=gettext("Action");?></td>
							<td width="78%" class="vtable">
								<select name="aclaction" class="formselect">
									<?php $types = explode(",", "Allow,Deny,Refuse,Allow Snoop"); foreach ($types as $type): ?>
									<option value="<?=strtolower($type);?>" <?php if (strtolower($type) == strtolower($pconfig['aclaction'])) echo "selected=\"selected\""; ?>>
									<?=htmlspecialchars($type);?>
									</option>
									<?php endforeach; ?>
								</select>
								<br />
								<span class="vexpl">
									<?=gettext("Choose what to do with DNS requests that match the criteria specified below.");?> <br />
									<?=gettext("<b>Deny:</b> This action stops queries from hosts within the netblock defined below.");?> <br />
									<?=gettext("<b>Refuse:</b> This action also stops queries from hosts within the netblock defined below, but sends a DNS rcode REFUSED error message back to the client.");?> <br />
									<?=gettext("<b>Allow:</b> This action allows queries from hosts within the netblock defined below.");?> <br />
									<?=gettext("<b>Allow Snoop:</b> This action allows recursive and nonrecursive access from hosts within the netblock defined below. Used for cache snooping and ideally should only be configured for your administrative host.");?> <br />
								</span>
							</td>
						</tr>
						<tr>
						<td width="22%" valign="top" class="vncellreq"><?=gettext("Networks");?></td>
						<td width="78%" class="vtable">
							<table id="maintable" summary="networks">
								<tbody>
									<tr>
										<td><div id="onecolumn"><?=gettext("Network");?></div></td>
										<td><div id="twocolumn"><?=gettext("CIDR");?></div></td>
										<td><div id="threecolumn"><?=gettext("Description");?></div></td>
									</tr>
									<?php $counter = 0; ?>
									<?php
										if($networkacl)
											foreach($networkacl as $item):
									?>
											<?php
												$network = $item['acl_network'];
												$cidr = $item['mask'];
												$description = $item['description'];
											?>
									<tr>
										<td>
											<input name="acl_network<?=$counter;?>" type="text" class="formfld unknown ipv4v6" id="acl_network<?=$counter;?>" size="30" value="<?=htmlspecialchars($network);?>" />
										</td>
										<td>
											<select name="mask<?=$counter;?>" class="formselect ipv4v6" id="mask<?=$counter;?>">
											<?php
												for ($i = 128; $i > 0; $i--) {
													echo "<option value=\"$i\" ";
													if ($i == $cidr) echo "selected=\"selected\"";
													echo ">" . $i . "</option>";
												}
											?>
											</select>
										</td>
										<td>
											<input name="description<?=$counter;?>" type="text" class="formfld unknown" id="description<?=$counter;?>" size="40" value="<?=htmlspecialchars($description);?>" />
										</td>
										<td>
											<a onclick="removeRow(this); return false;" href="#"><img border="0" src="/themes/<?=$g['theme'];?>/images/icons/icon_x.gif" alt="delete" /></a>
										</td>
									</tr>
									<?php $counter++; ?>
									<?php endforeach; ?>
								</tbody>
							</table>
							<a onclick="javascript:addRowTo('maintable', 'formfldalias'); return false;" href="#">
								<img border="0" src="/themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" alt="" title="<?=gettext("add another entry");?>" />
							</a>
							<script type="text/javascript">
							//<![CDATA[
								field_counter_js = 3;
								rows = 1;
								totalrows = <?php echo $counter; ?>;
								loaded = <?php echo $counter; ?>;
							//]]>
							</script>

							</td>
						</tr>

						<tr>
							<td width="22%" valign="top" class="vncell"><?=gettext("Description");?></td>
							<td width="78%" class="vtable">
								<input name="description" type="text" class="formfld unknown" id="description" size="52" maxlength="52" value="<?=htmlspecialchars($pconfig['description']);?>" />
								<br />
								<span class="vexpl"><?=gettext("You may enter a description here for your reference.");?></span>
							</td>
						</tr>
						<tr>
							<td>&nbsp;</td>
						</tr>
						<tr>
							<td width="22%" valign="top">&nbsp;</td>
							<td width="78%">
								&nbsp;<br />&nbsp;
								<input name="Submit" type="submit" class="formbtn" value="<?=gettext("Save"); ?>" />
								<input type="button" class="formbtn" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=$referer;?>'" />
							</td>
						</tr>
					</table>

				<?php else: ?>

				<table class="sortable" width="100%" border="0" cellpadding="0" cellspacing="0" summary="results">
					<thead>
						<tr>
							<td width="25%" class="listhdrr"><?=gettext("Access List Name"); ?></td>
							<td width="25%" class="listhdrr"><?=gettext("Action"); ?></td>
							<td width="45%" class="listhdr"><?=gettext("Description"); ?></td>
							<td width="5%" class="list">&nbsp;</td>
						</tr>
					</thead>
					<tfoot>
						<tr>
							<td class="list" colspan="3">&nbsp;</td>
							<td class="list">
								<table border="0" cellspacing="0" cellpadding="1" summary="icons">
									<tr>
										<td width="17">&nbsp;</td>
										<td valign="middle"><a href="services_unbound_acls.php?act=new">
											<img src="./themes/<?=$g['theme'];?>/images/icons/icon_plus.gif" title="<?=gettext("Add new Access List"); ?>" border="0" alt="add" />
										</a></td>
									</tr>
								</table>
							</td>
						</tr>
						<tr>
							<td colspan="4">
								<p>
									<?=gettext("Access Lists to control access to the DNS Resolver can be defined here.");?>
								</p>
							</td>
						</tr>
					</tfoot>
					<tbody>
					<?php
						$i = 0;
						foreach($a_acls as $acl):
					?>
						<tr ondblclick="document.location='services_unbound_acls.php?act=edit&amp;id=<?=$i;?>'">
							<td class="listlr">
								<?=htmlspecialchars($acl['aclname']);?>
							</td>
							<td class="listr">
								<?=htmlspecialchars($acl['aclaction']);?>
							</td>
							<td class="listbg">
								<?=htmlspecialchars($acl['description']);?>
							</td>
							<td valign="middle" class="list nowrap">
								<table border="0" cellspacing="0" cellpadding="1" summary="icons">
									<tr>
										<td valign="middle"><a href="services_unbound_acls.php?act=edit&amp;id=<?=$i;?>">
											<img src="./themes/<?=$g['theme'];?>/images/icons/icon_e.gif" title="<?=gettext("edit access list"); ?>" width="17" height="17" border="0" alt="edit" />
										</a></td>
										<td valign="middle"><a href="services_unbound_acls.php?act=del&amp;id=<?=$i;?>" onclick="return confirm('<?=gettext("Do you really want to delete this access list?"); ?>')">
											<img src="/themes/<?=$g['theme'];?>/images/icons/icon_x.gif" title="<?=gettext("delete access list"); ?>" width="17" height="17" border="0" alt="delete" />
										</a></td>
									</tr>
								</table>
							</td>
						</tr>
					<?php
						$i++;
						endforeach;
					?>
					<tr style="display:none"><td></td></tr>
					</tbody>
				</table>
			<?php endif; ?>
			</div>
			</td>
		</tr>
	</tbody>
</table>
</form>

<?php include("fend.inc"); ?>
</body>
</html>