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-rw-r--r--src/etc/inc/ipsec.attributes.php200
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diff --git a/src/etc/inc/ipsec.attributes.php b/src/etc/inc/ipsec.attributes.php
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+<?php
+/*
+ ipsec.attributes.php
+ Copyright (C) 2011-2012 Ermal Lu├ži
+ 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.
+*/
+
+if (empty($common_name)) {
+ $common_name = getenv("common_name");
+ if (empty($common_name)) {
+ $common_name = getenv("username");
+ }
+}
+
+function cisco_to_cidr($addr) {
+ if (!is_ipaddr($addr)) {
+ return 0;
+ }
+ $mask = decbin(~ip2long($addr));
+ $mask = substr($mask, -32);
+ $k = 0;
+ for ($i = 0; $i <= 32; $i++) {
+ $k += intval($mask[$i]);
+ }
+ return $k;
+}
+
+function cisco_extract_index($prule) {
+
+ $index = explode("#", $prule);
+ if (is_numeric($index[1])) {
+ return intval($index[1]);
+ } else {
+ syslog(LOG_WARNING, "Error parsing rule {$prule}: Could not extract index");
+ }
+ return -1;;
+}
+
+function parse_cisco_acl($attribs) {
+ global $attributes;
+ if (!is_array($attribs)) {
+ return "";
+ }
+
+ $devname = "enc0";
+ $finalrules = "";
+ if (is_array($attribs['ciscoavpair'])) {
+ $inrules = array();
+ $outrules = array();
+ foreach ($attribs['ciscoavpair'] as $avrules) {
+ $rule = explode("=", $avrules);
+ $dir = "";
+ if (strstr($rule[0], "inacl")) {
+ $dir = "in";
+ } else if (strstr($rule[0], "outacl")) {
+ $dir = "out";
+ } else if (strstr($rule[0], "dns-servers")) {
+ $attributes['dns-servers'] = explode(" ", $rule[1]);
+ continue;
+ } else if (strstr($rule[0], "route")) {
+ if (!is_array($attributes['routes'])) {
+ $attributes['routes'] = array();
+ }
+ $attributes['routes'][] = $rule[1];
+ continue;
+ }
+ $rindex = cisco_extract_index($rule[0]);
+ if ($rindex < 0) {
+ continue;
+ }
+
+ $rule = $rule[1];
+ $rule = explode(" ", $rule);
+ $tmprule = "";
+ $index = 0;
+ $isblock = false;
+ if ($rule[$index] == "permit") {
+ $tmprule = "pass {$dir} quick on {$devname} ";
+ } else if ($rule[$index] == "deny") {
+ //continue;
+ $isblock = true;
+ $tmprule = "block {$dir} quick on {$devname} ";
+ } else {
+ continue;
+ }
+
+ $index++;
+
+ switch ($rule[$index]) {
+ case "tcp":
+ case "udp":
+ $tmprule .= "proto {$rule[$index]} ";
+ break;
+ }
+
+ $index++;
+ /* Source */
+ if (trim($rule[$index]) == "host") {
+ $index++;
+ $tmprule .= "from {$rule[$index]} ";
+ $index++;
+ if ($isblock == true) {
+ $isblock = false;
+ }
+ } else if (trim($rule[$index]) == "any") {
+ $tmprule .= "from any";
+ $index++;
+ } else {
+ $tmprule .= "from {$rule[$index]}";
+ $index++;
+ $netmask = cisco_to_cidr($rule[$index]);
+ $tmprule .= "/{$netmask} ";
+ $index++;
+ if ($isblock == true) {
+ $isblock = false;
+ }
+ }
+ /* Destination */
+ if (trim($rule[$index]) == "host") {
+ $index++;
+ $tmprule .= "to {$rule[$index]} ";
+ $index++;
+ if ($isblock == true) {
+ $isblock = false;
+ }
+ } else if (trim($rule[$index]) == "any") {
+ $index++;
+ $tmprule .= "to any";
+ } else {
+ $tmprule .= "to {$rule[$index]}";
+ $index++;
+ $netmask = cisco_to_cidr($rule[$index]);
+ $tmprule .= "/{$netmask} ";
+ $index++;
+ if ($isblock == true) {
+ $isblock = false;
+ }
+ }
+
+ if ($isblock == true) {
+ continue;
+ }
+
+ if ($dir == "in") {
+ $inrules[$rindex] = $tmprule;
+ } else if ($dir == "out") {
+ $outrules[$rindex] = $tmprule;
+ }
+ }
+
+
+ $state = "";
+ if (!empty($outrules)) {
+ $state = "no state";
+ }
+ ksort($inrules, SORT_NUMERIC);
+ foreach ($inrules as $inrule) {
+ $finalrules .= "{$inrule} {$state}\n";
+ }
+ if (!empty($outrules)) {
+ ksort($outrules, SORT_NUMERIC);
+ foreach ($outrules as $outrule) {
+ $finalrules .= "{$outrule} {$state}\n";
+ }
+ }
+ }
+ return $finalrules;
+}
+
+$rules = parse_cisco_acl($attributes);
+if (!empty($rules)) {
+ $pid = posix_getpid();
+ @file_put_contents("/tmp/ipsec_{$pid}{$common_name}.rules", $rules);
+ mwexec("/sbin/pfctl -a " . escapeshellarg("ipsec/{$common_name}") . " -f {$g['tmp_path']}/ipsec_{$pid}" . escapeshellarg($common_name) . ".rules");
+ @unlink("{$g['tmp_path']}/ipsec_{$pid}{$common_name}.rules");
+}
+
+?>
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