1<?php
2
3/**
4 * Licensed to Jasig under one or more contributor license
5 * agreements. See the NOTICE file distributed with this work for
6 * additional information regarding copyright ownership.
7 *
8 * Jasig licenses this file to you under the Apache License,
9 * Version 2.0 (the "License"); you may not use this file except in
10 * compliance with the License. You may obtain a copy of the License at:
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 *
20 * PHP Version 7
21 *
22 * @file     CAS/ProxyChain/Trusted.php
23 * @category Authentication
24 * @package  PhpCAS
25 * @author   Adam Franco <afranco@middlebury.edu>
26 * @license  http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0
27 * @link     https://wiki.jasig.org/display/CASC/phpCAS
28 */
29
30/**
31 * A proxy-chain definition that defines a chain up to a trusted proxy and
32 * delegates the resposibility of validating the rest of the chain to that
33 * trusted proxy.
34 *
35 * @class    CAS_ProxyChain_Trusted
36 * @category Authentication
37 * @package  PhpCAS
38 * @author   Adam Franco <afranco@middlebury.edu>
39 * @license  http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0
40 * @link     https://wiki.jasig.org/display/CASC/phpCAS
41 */
42class CAS_ProxyChain_Trusted
43extends CAS_ProxyChain
44implements CAS_ProxyChain_Interface
45{
46
47    /**
48     * Validate the size of the the list as compared to our chain.
49     *
50     * @param array $list list of proxies
51     *
52     * @return bool
53     */
54    protected function isSizeValid (array $list)
55    {
56        return (sizeof($this->chain) <= sizeof($list));
57    }
58
59}
60