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comparison default/assets/vendors/theme-widgets/vendor/abraham/twitteroauth/src/SignatureMethod.php @ 0:1d038bc9b3d2 default tip

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Up:default
author Liny <dev@neowd.com>
date Sat, 31 May 2025 09:21:51 +0800
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-1:000000000000 0:1d038bc9b3d2
1 <?php
2 /**
3 * The MIT License
4 * Copyright (c) 2007 Andy Smith
5 */
6 namespace Abraham\TwitterOAuth;
7
8 /**
9 * A class for implementing a Signature Method
10 * See section 9 ("Signing Requests") in the spec
11 */
12 abstract class SignatureMethod
13 {
14 /**
15 * Needs to return the name of the Signature Method (ie HMAC-SHA1)
16 *
17 * @return string
18 */
19 abstract public function getName();
20
21 /**
22 * Build up the signature
23 * NOTE: The output of this function MUST NOT be urlencoded.
24 * the encoding is handled in OAuthRequest when the final
25 * request is serialized
26 *
27 * @param Request $request
28 * @param Consumer $consumer
29 * @param Token $token
30 *
31 * @return string
32 */
33 abstract public function buildSignature(Request $request, Consumer $consumer, Token $token = null);
34
35 /**
36 * Verifies that a given signature is correct
37 *
38 * @param Request $request
39 * @param Consumer $consumer
40 * @param Token $token
41 * @param string $signature
42 *
43 * @return bool
44 */
45 public function checkSignature(Request $request, Consumer $consumer, Token $token, $signature)
46 {
47 $built = $this->buildSignature($request, $consumer, $token);
48
49 // Check for zero length, although unlikely here
50 if (strlen($built) == 0 || strlen($signature) == 0) {
51 return false;
52 }
53
54 if (strlen($built) != strlen($signature)) {
55 return false;
56 }
57
58 // Avoid a timing leak with a (hopefully) time insensitive compare
59 $result = 0;
60 for ($i = 0; $i < strlen($signature); $i++) {
61 $result |= ord($built{$i}) ^ ord($signature{$i});
62 }
63
64 return $result == 0;
65 }
66 }