pfSense

<?php

/*

	Originally Sponsored By Anathematic @ pfSense Forums

	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.

*/

*/

$blockaliasname = 'EasyRuleBlockHosts';

require_once("functions.inc");

require_once("util.inc");

require_once("config.inc");

	global $config;

	/* Borrowed from firewall_rules.php */

		$iflist['pptp'] = "PPTP VPN";

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

	}

		return $int;

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

		if (strtolower($int) == strtolower($ifd))

			return $if;

	}

		return "openvpn";

}

	/* 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 */

			continue;

		if ($rule['source']['address'] == $blockaliasname . strtoupper($int) && ($rule['interface'] == $int) && ($checkproto == $ipproto))

}

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

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

	if (easyrule_block_alias_getid($int) === false)

		return false;

	/* 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'] = '';

	return true;

}

function easyrule_block_alias_getid($int = 'wan') {

	global $blockaliasname, $config;

	if (!is_array($config['aliases']))

		return false;

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

	foreach ($config['aliases']['alias'] as $aliasid => $alias)

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

			return $aliasid;

	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 */

	if (!is_array($config['aliases']['alias']))

		$config['aliases']['alias'] = array();

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

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

	$id = easyrule_block_alias_getid($int);

	if ($id === false)

	  unset($id);

	$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['name']    = $blockaliasname . strtoupper($int);

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

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

	if (isset($id) && $a_aliases[$id])

		$a_aliases[$id] = $alias;

	else

		$a_aliases[] = $alias;

	// 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;

	if ($proto != "any")

		$filterent['protocol'] = $proto;

	else

		unset($filterent['protocol']);

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

	 *  it should be a safe choice. */

	if ($proto == "icmp")

		$filterent['icmptype'] = 'echoreq';

		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);

		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']);

		if(($key = array_search($unblock, $a_address)) !== false) {

			unset($a_address[$key]);

			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("Host ist not on block list: " . $host);

		}

	}

	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 {