New version of PHPCAS

include/phpCAS/CAS/ServiceBaseUrl/Base.php

@@ -0,0 +1,98 @@
+<?php
+
+/**
+ * Licensed to Jasig under one or more contributor license
+ * agreements. See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ *
+ * Jasig licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * PHP Version 7
+ *
+ * @file     CAS/ServiceBaseUrl/Base.php
+ * @category Authentication
+ * @package  PhpCAS
+ * @author   Henry Pan <git@phy25.com>
+ * @license  http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0
+ * @link     https://wiki.jasig.org/display/CASC/phpCAS
+ */
+
+/**
+ * Base class of CAS/ServiceBaseUrl that implements isHTTPS method.
+ *
+ * @class    CAS_ServiceBaseUrl_Base
+ * @category Authentication
+ * @package  PhpCAS
+ * @author   Henry Pan <git@phy25.com>
+ * @license  http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0
+ * @link     https://wiki.jasig.org/display/CASC/phpCAS
+ */
+abstract class CAS_ServiceBaseUrl_Base
+implements CAS_ServiceBaseUrl_Interface
+{
+
+    /**
+     * Get PHP server name.
+     *
+     * @return string the server hostname and port of the server
+     */
+    abstract public function get();
+
+    /**
+     * Check whether HTTPS is used.
+     *
+     * This is used to construct the protocol in the URL.
+     *
+     * @return bool true if HTTPS is used
+     */
+    public function isHttps() {
+        if (!empty($_SERVER['HTTP_X_FORWARDED_PROTO'])) {
+            return ($_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https');
+        } elseif (!empty($_SERVER['HTTP_X_FORWARDED_PROTOCOL'])) {
+            return ($_SERVER['HTTP_X_FORWARDED_PROTOCOL'] === 'https');
+        } elseif ( isset($_SERVER['HTTPS'])
+            && !empty($_SERVER['HTTPS'])
+            && strcasecmp($_SERVER['HTTPS'], 'off') !== 0
+        ) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Remove standard HTTP and HTTPS port for discovery and allowlist input.
+     *
+     * @param $url URL as https://domain:port without trailing slash
+     * @return standardized URL, or the original URL
+     * @throws CAS_InvalidArgumentException if the URL does not include the protocol
+     */
+    protected function removeStandardPort($url) {
+        if (strpos($url, "://") === false) {
+            throw new CAS_InvalidArgumentException(
+                "Configured base URL should include the protocol string: " . $url);
+        }
+
+        $url = rtrim($url, '/');
+
+        if (strpos($url, "https://") === 0 && substr_compare($url, ':443', -4) === 0) {
+            return substr($url, 0, -4);
+        }
+
+        if (strpos($url, "http://") === 0 && substr_compare($url, ':80', -3) === 0) {
+            return substr($url, 0, -3);
+        }
+
+        return $url;
+    }
+
+}