pfSense

<?php

/*

	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,

	2. Redistributions in binary form must reproduce the above copyright

	   the documentation and/or other materials provided with the

	   distribution.

	3. All advertising materials mentioning features or use of this software

	   must display the following acknowledgment:

	   "This product includes software developed by the pfSense Project

	   for use in the pfSense® software distribution. (http://www.pfsense.org/).

	4. The names "pfSense" and "pfSense Project" must not be used to

	   endorse or promote products derived from this software without

	   prior written permission. For written permission, please contact

	   coreteam@pfsense.org.

	5. Products derived from this software may not be called "pfSense"

	   nor may "pfSense" appear in their names without prior written

	   permission of the Electric Sheep Fencing, LLC.

	6. Redistributions of any form whatsoever must retain the following

	   acknowledgment:

	"This product includes software developed by the pfSense Project

	for use in the pfSense software distribution (http://www.pfsense.org/).

	THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY

	EXPRESSED 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 pfSense PROJECT OR

	ITS CONTRIBUTORS 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.

$blockaliasname = 'EasyRuleBlockHosts';

require_once("functions.inc");

require_once("util.inc");

	global $config;

	/* Borrowed from firewall_rules.php */

		$iflist['l2tp'] = "L2TP VPN";

	}

	foreach ($iflist as $if => $ifd) {

}

	/* No rules, we we know it doesn't exist */

	if (!is_array($config['filter']['rule'])) {

		return false;

	}

	/* Search through the rules for one referencing our alias */

}

	/* If the alias doesn't exist, exit.

	 * Can't create an empty alias, and we don't know a host */

	/* If the rule already exists, no need to do it again */

	/* No rules, start a new array */

	if (!is_array($config['filter']['rule'])) {

		$config['filter']['rule'] = array();

	}

	filter_rules_sort();

	$a_filter = &$config['filter']['rule'];

	/* Make up a new rule */

	$filterent = array();

	$filterent['type'] = 'block';

	$filterent['destination']['any'] = '';

	$filterent['created'] = make_config_revision_entry(null, "Easy Rule");

	return true;

}

function easyrule_block_alias_getid($int = 'wan') {

	global $blockaliasname, $config;

	/* Hunt down an alias with the name we want, return its id */

		if ($alias['name'] == $blockaliasname . strtoupper($int)) {

	}

	return false;

}

function easyrule_block_alias_add($host, $int = 'wan') {

	global $blockaliasname, $config;

	/* If the host isn't a valid IP address, bail */

	/* If there are no aliases, start an array */

	$a_aliases = &$config['aliases']['alias'];

	/* Try to get the ID if the alias already exists */

	$id = easyrule_block_alias_getid($int);

	$alias = array();

		list($host, $mask) = explode("/", $host);

	} elseif (is_specialnet($host)) {

		$mask = 0;

		$mask = 128;

		$mask = 32;

	}

		// Catch case when the list is empty

		if (empty($a_aliases[$id]['address'])) {

			$a_address = array();

			$a_detail = array();

		} else {

			$a_address = explode(" ", $a_aliases[$id]['address']);

			/* Make sure this IP isn't already in the list. */

			if (in_array($host.'/'.$mask, $a_address)) {

				return true;

			}

			$a_detail = explode("||", $a_aliases[$id]['detail']);

		}

		$alias['name']    = $a_aliases[$id]['name'];

		$alias['type']    = $a_aliases[$id]['type'];

		$alias['descr']   = $a_aliases[$id]['descr'];

		$a_detail[] = gettext('Entry added') . ' ' . date('r');

		$alias['address'] = join(" ", $a_address);

		$alias['detail']  = join("||", $a_detail);

		/* Create a new alias with all the proper information */

		$alias['type']    = 'network';

	/* Replace the old alias if needed, otherwise tack it on the end */

	// Sort list

	$a_aliases = msort($a_aliases, "name");

	return true;

}

	/* Bail if the supplied host is not a valid IP address */

	/* Flag whether or not we need to reload the filter */

	$dirty = false;

	/* Attempt to add this host to the alias */

	if (easyrule_block_alias_add($host, $int)) {

		$dirty = true;

	} else {

		/* Couldn't add the alias, or adding the host failed. */

		return false;

	}

	/* Attempt to add the firewall rule if it doesn't exist.

	 * Failing to add the rule isn't necessarily an error, it may

	 * have been modified by the user in some way. Adding to the

	 * Alias is what's important.

	 */

		if (easyrule_block_rule_create($int, $ipproto)) {

		} else {

			return false;

		}

	}

	/* If needed, write the config and reload the filter */

	if ($dirty) {

		write_config();

		$retval = filter_configure();

			header("Location: firewall_aliases.php");

			exit;

		} else {

			return true;

		}

		return false;

	}

}

	/* No rules, start a new array */

	if (!is_array($config['filter']['rule'])) {

		$config['filter']['rule'] = array();

	}

	filter_rules_sort();

	$a_filter = &$config['filter']['rule'];

	/* Make up a new rule */

	$filterent = array();

	$filterent['type'] = 'pass';

	$filterent['interface'] = $int;

	/* Default to only allow echo requests, since that's what most people want and

	 *  it should be a safe choice. */

		list($srchost, $srcmask) = explode("/", $srchost);

	} elseif (is_specialnet($srchost)) {

		$srcmask = 0;

		$srcmask = 128;

		$srcmask = 32;

	}

	if (is_subnet($dsthost)) {

		list($dsthost, $dstmask) = explode("/", $dsthost);

	} elseif (is_specialnet($dsthost)) {

		$dstmask = 0;

		$dstmask = 128;

		$dstmask = 32;

	}

	pconfig_to_address($filterent['source'], $srchost, $srcmask);

	pconfig_to_address($filterent['destination'], $dsthost, $dstmask, '', $dstport, $dstport);

	$filterent['created'] = make_config_revision_entry(null, "Easy Rule");

		header("Location: firewall_rules.php?if={$int}");

		exit;

	} else {

		return true;

	}

}

		$int = easyrule_find_rule_interface($int);

		if ($int === false) {

	} else {

function easyrule_parse_unblock($int, $host, $ipproto = "inet") {

	global $blockaliasname, $config;

	if (!empty($host) && !empty($int)) {

		$host = trim($host, "[]");

		if (!is_ipaddr($host) && !is_subnet($host)) {

			return gettext("Tried to unblock invalid IP:") . ' ' . htmlspecialchars($host);

		}

		$real_int = easyrule_find_rule_interface($int);

		if ($real_int === false) {

			return gettext("Invalid interface for block rule:") . ' ' . htmlspecialchars($int);

		}

		/* Try to get the ID - will fail if there are no rules/alias on this interface */

		$id = easyrule_block_alias_getid($real_int);

		if ($id === false || !$config['aliases']['alias'][$id]) {

			return gettext("No block rules set on interface:") . ' ' . htmlspecialchars($int);

		}

		$alias = &$config['aliases']['alias'][$id];

		if (is_subnet($host)) {

			list($host, $mask) = explode("/", $host);

		} elseif (is_specialnet($host)) {

			$mask = 0;

		} elseif (is_ipaddrv6($host)) {

			$mask = 128;

		} else {

			$mask = 32;

		}

		// Create the expected string representation

		$unblock = $host.'/'.$mask;

		$a_address = explode(" ", $config['aliases']['alias'][$id]['address']);

		$a_detail = explode("||", $config['aliases']['alias'][$id]['detail']);

			unset($a_detail[$key]);

			// Write back the result to the config array

			$config['aliases']['alias'][$id]['address'] = join(" ", $a_address);

			$config['aliases']['alias'][$id]['detail'] = join("||", $a_detail);

			// Update config

			write_config();

			$retval = filter_configure();

			if (!empty($_SERVER['DOCUMENT_ROOT'])) {

				header("Location: firewall_aliases.php");

				exit;

			} else {

				return gettext("Host unblocked successfully");

			}

		} else {

	}

	return gettext("Tried to unblock but had no host IP or interface");

}

function easyrule_parse_getblock($int = 'wan', $sep = "\n") {

	global $blockaliasname, $config;

	$real_int = easyrule_find_rule_interface($int);

	if ($real_int === false) {

		return gettext("Invalid interface for block rule:") . ' ' . htmlspecialchars($int);

	}

	/* Try to get the ID - will fail if there are no rules/alias on this interface */

	$id = easyrule_block_alias_getid($real_int);

	if ($id === false || !$config['aliases']['alias'][$id] || empty($config['aliases']['alias'][$id]['address'])) {

		return gettext("No block rules set on interface:") . ' ' . htmlspecialchars($int);

	}

	return join($sep, explode(" ", $config['aliases']['alias'][$id]['address']));

}

	global $protocols_with_ports;

	$dst = trim($dst, "[]");

	if (!empty($int) && !empty($proto) && !empty($src) && !empty($dst)) {

		$int = easyrule_find_rule_interface($int);

		if ($int === false) {

		if (getprotobyname($proto) == -1) {

		if (in_array($proto, $protocols_with_ports)) {

			if (empty($dstport)) {

		} else {

			$dstport = 0;

		}

		/* Should have valid input... */

	} else {