LingotekOAuthSignatureMethod_MD5.php in Lingotek Translation 7.5
File
lib/oauth-php/library/signature_method/LingotekOAuthSignatureMethod_MD5.phpView source
<?php
/**
* OAuth signature implementation using MD5
*
* @version $Id$
* @author Marc Worrell <marcw@pobox.com>
* @date Sep 8, 2008 12:09:43 PM
*
* The MIT License
*
* Copyright (c) 2007-2008 Mediamatic Lab
*
* 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.
*/
require_once dirname(__FILE__) . '/LingotekOAuthSignatureMethod.class.php';
class LingotekOAuthSignatureMethod_MD5 extends LingotekOAuthSignatureMethod {
public function name() {
return 'MD5';
}
/**
* Calculate the signature using MD5
* Binary md5 digest, as distinct from PHP's built-in hexdigest.
* This function is copyright Andy Smith, 2007.
*
* @param LingotekOAuthRequest request
* @param string base_string
* @param string consumer_secret
* @param string token_secret
* @return string
*/
function signature($request, $base_string, $consumer_secret, $token_secret) {
$s .= '&' . $request
->urlencode($consumer_secret) . '&' . $request
->urlencode($token_secret);
$md5 = md5($base_string);
$bin = '';
for ($i = 0; $i < strlen($md5); $i += 2) {
$bin .= chr(hexdec($md5[$i + 1]) + hexdec($md5[$i]) * 16);
}
return $request
->urlencode(base64_encode($bin));
}
/**
* Check if the request signature corresponds to the one calculated for the request.
*
* @param LingotekOAuthRequest request
* @param string base_string data to be signed, usually the base string, can be a request body
* @param string consumer_secret
* @param string token_secret
* @param string signature from the request, still urlencoded
* @return string
*/
public function verify($request, $base_string, $consumer_secret, $token_secret, $signature) {
$a = $request
->urldecode($signature);
$b = $request
->urldecode($this
->signature($request, $base_string, $consumer_secret, $token_secret));
// We have to compare the decoded values
$valA = base64_decode($a);
$valB = base64_decode($b);
// Crude binary comparison
return rawurlencode($valA) == rawurlencode($valB);
}
}
/* vi:set ts=4 sts=4 sw=4 binary noeol: */
Classes
Name | Description |
---|---|
LingotekOAuthSignatureMethod_MD5 |