redirection / models / request.php

request.php in Redirection 5.4, at models/request.php

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1	<?php
2
3	require_once __DIR__ . '/ip.php';
4
5	class Redirection_Request {
6	/**
7	* URL friendly sanitize_text_fields which lets encoded characters through and doesn't trim
8	*
9	* @param string $value Value.
10	* @return string
11	*/
12	public static function sanitize_url( $value ) {
13	// Remove invalid UTF
14	$url = wp_check_invalid_utf8( $value, true );
15
16	// No new lines
17	$url = preg_replace( "/[\r\n\t].*?$/s", '', $url );
18
19	// Clean control codes
20	$url = preg_replace( '/[^\PC\s]/u', '', $url );
21
22	return $url;
23	}
24
25	/**
26	* Get HTTP headers
27	*
28	* @return array
29	*/
30	public static function get_request_headers() {
31	$ignore = apply_filters( 'redirection_request_headers_ignore', [
32	'cookie',
33	'host',
34	] );
35	$headers = [];
36
37	foreach ( $_SERVER as $name => $value ) {
38	$value = sanitize_text_field( $value );
39	$name = sanitize_text_field( $name );
40
41	if ( substr( $name, 0, 5 ) === 'HTTP_' ) {
42	$name = strtolower( substr( $name, 5 ) );
43	$name = str_replace( '_', ' ', $name );
44	$name = ucwords( $name );
45	$name = str_replace( ' ', '-', $name );
46
47	if ( ! in_array( strtolower( $name ), $ignore, true ) ) {
48	$headers[ $name ] = $value;
49	}
50	}
51	}
52
53	return apply_filters( 'redirection_request_headers', $headers );
54	}
55
56	/**
57	* Get request method
58	*
59	* @return string
60	*/
61	public static function get_request_method() {
62	$method = '';
63
64	if ( isset( $_SERVER['REQUEST_METHOD'] ) && is_string( $_SERVER['REQUEST_METHOD'] ) ) {
65	$method = sanitize_text_field( $_SERVER['REQUEST_METHOD'] );
66	}
67
68	return apply_filters( 'redirection_request_method', $method );
69	}
70
71	/**
72	* Get the server name (from $_SERVER['SERVER_NAME]), or use the request name ($_SERVER['HTTP_HOST']) if not present
73	*
74	* @return string
75	*/
76	public static function get_server_name() {
77	$host = self::get_request_server_name();
78
79	if ( isset( $_SERVER['SERVER_NAME'] ) && is_string( $_SERVER['SERVER_NAME'] ) ) {
80	$host = sanitize_text_field( $_SERVER['SERVER_NAME'] );
81	}
82
83	return apply_filters( 'redirection_request_server', $host );
84	}
85
86	/**
87	* Get the request server name (from $_SERVER['HTTP_HOST])
88	*
89	* @return string
90	*/
91	public static function get_request_server_name() {
92	$host = '';
93
94	if ( isset( $_SERVER['HTTP_HOST'] ) && is_string( $_SERVER['HTTP_HOST'] ) ) {
95	$host = sanitize_text_field( $_SERVER['HTTP_HOST'] );
96	}
97
98	$parts = explode( ':', $host );
99
100	return apply_filters( 'redirection_request_server_host', $parts[0] );
101	}
102
103	/**
104	* Get server name + protocol
105	*
106	* @return string
107	*/
108	public static function get_server() {
109	return self::get_protocol() . '://' . self::get_server_name();
110	}
111
112	/**
113	* Get protocol
114	*
115	* @return string
116	*/
117	public static function get_protocol() {
118	return is_ssl() ? 'https' : 'http';
119	}
120
121	/**
122	* Get request protocol
123	*
124	* @return string
125	*/
126	public static function get_request_url() {
127	$url = '';
128
129	if ( isset( $_SERVER['REQUEST_URI'] ) && is_string( $_SERVER['REQUEST_URI'] ) ) {
130	$url = self::sanitize_url( $_SERVER['REQUEST_URI'] );
131	}
132
133	return apply_filters( 'redirection_request_url', stripslashes( $url ) );
134	}
135
136	/**
137	* Get user agent
138	*
139	* @return string
140	*/
141	public static function get_user_agent() {
142	$agent = '';
143
144	if ( isset( $_SERVER['HTTP_USER_AGENT'] ) && is_string( $_SERVER['HTTP_USER_AGENT'] ) ) {
145	$agent = sanitize_text_field( $_SERVER['HTTP_USER_AGENT'] );
146	}
147
148	return apply_filters( 'redirection_request_agent', $agent );
149	}
150
151	/**
152	* Get referrer
153	*
154	* @return string
155	*/
156	public static function get_referrer() {
157	$referrer = '';
158
159	if ( isset( $_SERVER['HTTP_REFERER'] ) && is_string( $_SERVER['HTTP_REFERER'] ) ) {
160	$referrer = self::sanitize_url( $_SERVER['HTTP_REFERER'] );
161	}
162
163	return apply_filters( 'redirection_request_referrer', $referrer );
164	}
165
166	/**
167	* Get standard IP header names
168	*
169	* @return string[]
170	*/
171	public static function get_ip_headers() {
172	return [
173	'HTTP_CF_CONNECTING_IP',
174	'HTTP_CLIENT_IP',
175	'HTTP_X_FORWARDED_FOR',
176	'HTTP_X_FORWARDED',
177	'HTTP_X_CLUSTER_CLIENT_IP',
178	'HTTP_FORWARDED_FOR',
179	'HTTP_FORWARDED',
180	'HTTP_VIA',
181	'REMOTE_ADDR',
182	];
183	}
184
185	/**
186	* Get browser IP
187	*
188	* @return string
189	*/
190	public static function get_ip() {
191	$options = red_get_options();
192	$ip = new Redirection_IP();
193
194	// This is set by the server, but may not be the actual IP
195	if ( isset( $_SERVER['REMOTE_ADDR'] ) ) {
196	$ip = new Redirection_IP( $_SERVER['REMOTE_ADDR'] );
197	}
198
199	if ( in_array( $ip->get(), $options['ip_proxy'], true ) \|\| empty( $options['ip_proxy'] ) ) {
200	foreach ( $options['ip_headers'] as $header ) {
201	if ( isset( $_SERVER[ $header ] ) ) {
202	$ip = new Redirection_IP( $_SERVER[ $header ] );
203	error_log( $header . ' = ' . $ip->get() );
204	break;
205	}
206	}
207	}
208
209	return apply_filters( 'redirection_request_ip', $ip->get() );
210	}
211
212	/**
213	* Get a cookie
214	*
215	* @param string $cookie Name.
216	* @return string\|false
217	*/
218	public static function get_cookie( $cookie ) {
219	if ( isset( $_COOKIE[ $cookie ] ) && is_string( $_COOKIE[ $cookie ] ) ) {
220	return apply_filters( 'redirection_request_cookie', sanitize_text_field( $_COOKIE[ $cookie ] ), $cookie );
221	}
222
223	return false;
224	}
225
226	/**
227	* Get a HTTP header
228	*
229	* @param string $name Header name.
230	* @return string\|false
231	*/
232	public static function get_header( $name ) {
233	$name = 'HTTP_' . strtoupper( $name );
234	$name = str_replace( '-', '_', $name );
235
236	if ( isset( $_SERVER[ $name ] ) && is_string( $_SERVER[ $name ] ) ) {
237	return apply_filters( 'redirection_request_header', sanitize_text_field( $_SERVER[ $name ] ), $name );
238	}
239
240	return false;
241	}
242
243	/**
244	* Get browser accept language
245	*
246	* @return string[]
247	*/
248	public static function get_accept_language() {
249	if ( isset( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) && is_string( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) ) {
250	$languages = preg_replace( '/;.*$/', '', sanitize_text_field( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) );
251	$languages = str_replace( ' ', '', $languages );
252
253	return apply_filters( 'redirection_request_accept_language', explode( ',', $languages ) );
254	}
255
256	return [];
257	}
258	}
259