From 19d30190e20f1c0b2848ea4043aaf9c31e48e386 Mon Sep 17 00:00:00 2001
From: Guillaume Mazoyer <respawneral@gmail.com>
Date: Tue, 5 Aug 2014 16:34:22 +0200
Subject: Add config.defaults.php to set default configuration options.

The defaults can be overriden in the config.php file but some of
them are fine as defaults. This will help in having a config.php
file as short as we can.

Also move utils.php to the includes directory.
---
 includes/utils.php | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 includes/utils.php

(limited to 'includes/utils.php')

diff --git a/includes/utils.php b/includes/utils.php
new file mode 100644
index 0000000..b6fc061
--- /dev/null
+++ b/includes/utils.php
@@ -0,0 +1,99 @@
+<?php
+
+/*
+ * Looking Glass - An easy to deploy Looking Glass
+ * Copyright (C) 2014 Guillaume Mazoyer <gmazoyer@gravitons.in>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+ */
+
+require_once 'config.php';
+
+function match_ipv4($ip, $ip_only = true) {
+  if (strrpos($ip, '/') && !$ip_only)  {
+    $ip_and_mask = explode('/', $ip, 2);
+
+    return filter_var($ip_and_mask[0], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) &&
+      filter_var($ip_and_mask[1], FILTER_VALIDATE_INT);
+  } else {
+    return filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
+  }
+}
+
+function match_ipv6($ip, $ip_only = true) {
+  if (strrpos($ip, '/') && !$ip_only)  {
+    $ip_and_mask = explode('/', $ip, 2);
+
+    return filter_var($ip_and_mask[0], FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) &&
+      filter_var($ip_and_mask[1], FILTER_VALIDATE_INT);
+  } else {
+    return filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
+  }
+}
+
+function match_fqdn($fqdn) {
+  $regex = '/(?=^.{4,255}$)(^((?!-)[a-zA-Z0-9-]{1,63}(?<!-)\.)+[a-zA-Z]{2,63}$)/';
+
+  if ((preg_match($regex, $fqdn) === false) ||
+      (preg_match($regex, $fqdn) === 0)) {
+    return false;
+  } else {
+    return true;
+  }
+}
+
+function match_as($as) {
+  global $config;
+
+  $options_wide_range = array(
+    'options' => array('min_range' => 1, 'max_range' => 4294967294)
+  );
+  $options_16bit_private = array(
+    'options' => array( 'min_range' => 64512, 'max_range' => 65534)
+  );
+  $options_32bit_private = array(
+    'options' => array('min_range' => 4200000000, 'max_range' => 4294967294)
+  );
+
+  if (!filter_var($as, FILTER_VALIDATE_INT, $options_wide_range)) {
+    return false;
+  }
+
+  if (filter_var($as, FILTER_VALIDATE_INT, $options_16bit_private)) {
+    return isset($config['misc']['allow_private_asn']) &&
+      $config['misc']['allow_private_asn'] == true;
+  }
+
+  if (filter_var($as, FILTER_VALIDATE_INT, $options_32bit_private)) {
+    return isset($config['misc']['allow_private_asn']) &&
+      $config['misc']['allow_private_asn'] == true;
+  }
+
+  return true;
+}
+
+function match_aspath_regex($aspath_regex) {
+  // TODO: validate a regex with a regex?
+  return true;
+}
+
+function log_to_file($log) {
+  global $config;
+
+  $log = '['.date("Y-m-d H:i:s").'] '.$log."\n";
+  file_put_contents($config['misc']['logs'], $log, FILE_APPEND | LOCK_EX);
+}
+
+// End of utils.php
-- 
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