EXNmBYsv

1<?php
2
3class OAuth_Authorization_Header {
4
5	private $keys;
6	private $url;
7	private $method;
8	private $credentials;
9
10	public function __construct( $keys, $url, $method ) {
11		$this->keys   = $keys;
12		$this->url    = $url;
13		$this->method = $method;
14		$this->set_credentials();
15	}
16
17	public function get_header() {
18
19		$header = 'OAuth ';
20
21		$oauth_params = array();
22
23		foreach ( $this->credentials as $key => $value ) {
24			$oauth_params[] = "$key=\"" . rawurlencode( $value ) . '"';
25		}
26
27		$header .= implode( ', ', $oauth_params );
28
29		return $header;
30	}
31
32	private function set_credentials() {
33
34		$credentials = array(
35			'oauth_consumer_key'     => $this->keys['oauth_consumer_key'],
36			'oauth_nonce'            => wp_generate_password( 12, false, false ),
37			'oauth_signature_method' => 'HMAC-SHA1',
38			'oauth_token'            => $this->keys['oauth_token'],
39			'oauth_timestamp'        => time(),
40			'oauth_version'          => '1.0'
41		);
42
43		// For some reason, this matters!
44		ksort( $credentials );
45
46		$this->credentials = $credentials;
47
48		$this->set_oauth_signature();
49	}
50
51	private function set_oauth_signature() {
52
53		$string_params = array();
54
55		foreach ( $this->credentials as $key => $value ) {
56			$string_params[] = "$key=$value";
57		}
58
59		$signature = "$this->method&" . rawurlencode( $this->url ) . '&' . rawurlencode( implode( '&', $string_params ) );
60
61		$hash_hmac_key = rawurlencode( $this->keys['oauth_consumer_secret'] ) . '&' . rawurlencode( $this->keys['oauth_token_secret'] );
62
63		$oauth_signature = base64_encode( hash_hmac( 'sha1', $signature, $hash_hmac_key, true ) );
64
65		$this->credentials['oauth_signature'] = $oauth_signature;
66	}
67}