1: <?php
 2: 
 3: /*
 4:  * The MIT License
 5:  *
 6:  * Copyright 2017 David Schoenbauer <dschoenbauer@gmail.com>.
 7:  *
 8:  * Permission is hereby granted, free of charge, to any person obtaining a copy
 9:  * of this software and associated documentation files (the "Software"), to deal
10:  * in the Software without restriction, including without limitation the rights
11:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12:  * copies of the Software, and to permit persons to whom the Software is
13:  * furnished to do so, subject to the following conditions:
14:  *
15:  * The above copyright notice and this permission notice shall be included in
16:  * all copies or substantial portions of the Software.
17:  *
18:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21:  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24:  * THE SOFTWARE.
25:  */
26: 
27: namespace DSchoenbauer\Exception\Http\ClientError;
28: 
29: /**
30:  * Intended to be used when resource access is denied for legal reasons, e.g. 
31:  * censorship or government-mandated blocked access. A reference to the 1953 
32:  * dystopian novel Fahrenheit 451, where books are outlawed, and the 
33:  * autoignition temperature of paper, 451°F.
34:  * 
35:  * The server is denying access to the resource as a consequence of a legal demand.
36:  * 
37:  * The server in question might not be an origin server. This type of legal 
38:  * demand typically most directly affects the operations of ISPs and 
39:  * search engines.
40:  * 
41:  * Responses using this status code SHOULD include an explanation, in the 
42:  * response body, of the details of the legal demand: the party making it, 
43:  * the applicable legislation or regulation, and what classes of person and 
44:  * resource it applies to.
45:  *
46:  * @link https://httpstatuses.com/451 Source
47:  * @author David Schoenbauer <dschoenbauer@gmail.com>
48:  * @since 1.0.0
49:  */
50: class UnavailableForLegalReasonsException extends ClientErrorException {
51: 
52:     public function __construct($message = "") {
53:         parent::__construct($message, 451);
54:     }
55: 
56: }
57: