1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
<?php
// vim: foldmethod=marker
/**
* The MIT License
*
* Copyright (c) 2007 Andy Smith
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files ( the "Software" ), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
namespace MediaWiki\Extensions\OAuth\Lib;
use MediaWiki\Logger\LoggerFactory;
class OAuthUtil {
public static function urlencode_rfc3986( $input ) {
if ( is_array( $input ) ) {
return array_map(
array(
self::class,
'urlencode_rfc3986'
),
$input
);
} else {
if ( is_scalar( $input ) ) {
return str_replace(
'+',
' ',
str_replace( '%7E', '~', rawurlencode( $input ) )
);
} else {
return '';
}
}
}
// This decode function isn't taking into consideration the above
// modifications to the encoding process. However, this method doesn't
// seem to be used anywhere so leaving it as is.
public static function urldecode_rfc3986( $string ) {
return urldecode( $string );
}
// Utility function for turning the Authorization: header into
// parameters, has to do some unescaping
// Can filter out any non-oauth parameters if needed ( default behaviour )
// May 28th, 2010 - method updated to tjerk.meesters for a speed improvement.
// see http://code.google.com/p/oauth/issues/detail?id = 163
public static function split_header( $header, $only_allow_oauth_parameters = true ) {
$logger = LoggerFactory::getInstance( 'OAuth' );
$logger->debug( __METHOD__ . ": pulling headers from '$header'" );
$params = array();
if ( preg_match_all(
'/(' . ( $only_allow_oauth_parameters ? 'oauth_' : '' ) . '[a-z_-]*)=(:?"([^"]*)"|([^,]*))/',
$header,
$matches
)
) {
foreach ( $matches[1] as $i => $h ) {
$params[$h] = OAuthUtil::urldecode_rfc3986(
empty( $matches[3][$i] ) ? $matches[4][$i] : $matches[3][$i]
);
}
if ( isset( $params['realm'] ) ) {
unset( $params['realm'] );
}
}
return $params;
}
// helper to try to sort out headers for people who aren't running apache
public static function get_headers() {
if ( function_exists( 'apache_request_headers' ) ) {
// we need this to get the actual Authorization: header
// because apache tends to tell us it doesn't exist
$headers = apache_request_headers();
// sanitize the output of apache_request_headers because
// we always want the keys to be Cased-Like-This and arh()
// returns the headers in the same case as they are in the
// request
$out = array();
foreach ( $headers as $key => $value ) {
$key = str_replace(
" ",
"-",
ucwords( strtolower( str_replace( "-", " ", $key ) ) )
);
$out[$key] = $value;
}
} else {
// otherwise we don't have apache and are just going to have to hope
// that $_SERVER actually contains what we need
$out = array();
if ( isset( $_SERVER['CONTENT_TYPE'] ) ) {
$out['Content-Type'] = $_SERVER['CONTENT_TYPE'];
}
if ( isset( $_ENV['CONTENT_TYPE'] ) ) {
$out['Content-Type'] = $_ENV['CONTENT_TYPE'];
}
foreach ( $_SERVER as $key => $value ) {
if ( substr( $key, 0, 5 ) == "HTTP_" ) {
// this is chaos, basically it is just there to capitalize the first
// letter of every word that is not an initial HTTP and strip HTTP
// code from przemek
$key = str_replace(
" ",
"-",
ucwords( strtolower( str_replace( "_", " ", substr( $key, 5 ) ) ) )
);
$out[$key] = $value;
}
}
}
return $out;
}
// This function takes a input like a=b&a=c&d=e and returns the parsed
// parameters like this
// array( 'a' => array( 'b','c' ), 'd' => 'e' )
public static function parse_parameters( $input ) {
if ( !isset( $input ) || !$input ) {
return array();
}
$pairs = explode( '&', $input );
$parsed_parameters = array();
foreach ( $pairs as $pair ) {
$split = explode( '=', $pair, 2 );
$parameter = OAuthUtil::urldecode_rfc3986( $split[0] );
$value = isset( $split[1] ) ? OAuthUtil::urldecode_rfc3986( $split[1] ) : '';
if ( isset( $parsed_parameters[$parameter] ) ) {
// We have already recieved parameter( s ) with this name, so add to the list
// of parameters with this name
if ( is_scalar( $parsed_parameters[$parameter] ) ) {
// This is the first duplicate, so transform scalar ( string ) into an array
// so we can add the duplicates
$parsed_parameters[$parameter] = array( $parsed_parameters[$parameter] );
}
$parsed_parameters[$parameter][] = $value;
} else {
$parsed_parameters[$parameter] = $value;
}
}
return $parsed_parameters;
}
public static function build_http_query( $params ) {
LoggerFactory::getInstance( 'OAuth' )->debug(
__METHOD__ . " called with params:\n" . print_r( $params, true )
);
if ( !$params ) {
return '';
}
// Urlencode both keys and values
$keys = OAuthUtil::urlencode_rfc3986( array_keys( $params ) );
$values = OAuthUtil::urlencode_rfc3986( array_values( $params ) );
$params = array_combine( $keys, $values );
// Parameters are sorted by name, using lexicographical byte value ordering.
// Ref: Spec: 9.1.1 ( 1 )
uksort( $params, 'strcmp' );
$pairs = array();
foreach ( $params as $parameter => $value ) {
if ( is_array( $value ) ) {
// If two or more parameters share the same name, they are sorted by their value
// Ref: Spec: 9.1.1 ( 1 )
// June 12th, 2010 - changed to sort because of issue 164 by hidetaka
sort( $value, SORT_STRING );
foreach ( $value as $duplicate_value ) {
$pairs[] = $parameter . '=' . $duplicate_value;
}
} else {
$pairs[] = $parameter . '=' . $value;
}
}
// For each parameter, the name is separated from the corresponding value by an ' = ' character ( ASCII code 61 )
// Each name-value pair is separated by an '&' character ( ASCII code 38 )
return implode( '&', $pairs );
}
}
|
GitWeb