redirection / models / header.php

header.php in Redirection 4.5, at models/header.php

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1	<?php
2
3	class Red_Http_Headers {
4	private $headers = [];
5
6	public function __construct( $options = [] ) {
7	if ( is_array( $options ) ) {
8	$this->headers = array_filter( array_map( [ $this, 'normalize' ], $options ) );
9	}
10	}
11
12	private function normalize( $header ) {
13	$location = 'site';
14	if ( isset( $header['location'] ) && $header['location'] === 'redirect' ) {
15	$location = 'redirect';
16	}
17
18	$name = $this->sanitize( isset( $header['headerName'] ) ? $header['headerName'] : '' );
19	$type = $this->sanitize( isset( $header['type'] ) ? $header['type'] : '' );
20	$value = $this->sanitize( isset( $header['headerValue'] ) ? $header['headerValue'] : '' );
21	$settings = [];
22
23	if ( isset( $header['headerSettings'] ) && is_array( $header['headerSettings'] ) ) {
24	foreach ( $header['headerSettings'] as $key => $value ) {
25	$settings[ $this->sanitize( $key ) ] = $this->sanitize( $value );
26	}
27	}
28
29	if ( strlen( $name ) > 0 && strlen( $type ) > 0 ) {
30	return [
31	'type' => $this->dash_case( $type ),
32	'headerName' => $this->dash_case( $name ),
33	'headerValue' => $value,
34	'location' => $location,
35	'headerSettings' => $settings,
36	];
37	}
38
39	return null;
40	}
41
42	public function get_json() {
43	return $this->headers;
44	}
45
46	private function dash_case( $name ) {
47	$name = preg_replace( '/[^A-Za-z0-9]/', ' ', $name );
48	$name = preg_replace( '/\s{2,}/', ' ', $name );
49	$name = trim( $name, ' ' );
50	$name = ucwords( $name );
51	$name = str_replace( ' ', '-', $name );
52
53	return $name;
54	}
55
56	private function remove_dupes( $headers ) {
57	$new_headers = [];
58
59	foreach ( $headers as $header ) {
60	$new_headers[ $header['headerName'] ] = $header;
61	}
62
63	return array_values( $new_headers );
64	}
65
66	public function get_site_headers() {
67	$headers = array_values( $this->remove_dupes( array_filter( $this->headers, [ $this, 'is_site_header' ] ) ) );
68
69	return apply_filters( 'redirection_headers_site', $headers );
70	}
71
72	public function get_redirect_headers() {
73	// Site ones first, then redirect - redirect will override any site ones
74	$headers = $this->get_site_headers();
75	$headers = array_merge( $headers, array_values( array_filter( $this->headers, [ $this, 'is_redirect_header' ] ) ) );
76	$headers = array_values( $this->remove_dupes( $headers ) );
77
78	return apply_filters( 'redirection_headers_redirect', $headers );
79	}
80
81	private function is_site_header( $header ) {
82	return $header['location'] === 'site';
83	}
84
85	private function is_redirect_header( $header ) {
86	return $header['location'] === 'redirect';
87	}
88
89	public function run( $headers ) {
90	$done = [];
91
92	foreach ( $headers as $header ) {
93	if ( ! in_array( $header['headerName'], $done, true ) ) {
94	$name = $this->sanitize( $this->dash_case( $header['headerName'] ) );
95	$value = $this->sanitize( $header['headerValue'] );
96
97	// Trigger some other action
98	do_action( 'redirection_header', $name, $value );
99
100	header( sprintf( '%s: %s', $name, $value ) );
101	$done[] = $header['headerName'];
102	}
103	}
104	}
105
106	private function sanitize( $text ) {
107	// No new lines
108	$text = preg_replace( "/[\r\n\t].*?$/s", '', $text );
109
110	// Clean control codes
111	$text = preg_replace( '/[^\PC\s]/u', '', $text );
112
113	// Try and remove bad decoding
114	if ( function_exists( 'iconv' ) ) {
115	$converted = @iconv( 'UTF-8', 'UTF-8//IGNORE', $text );
116	if ( $converted !== false ) {
117	$text = $converted;
118	}
119	}
120
121	return $text;
122	}
123	}
124