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1 <?php |
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2 /** |
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3 * Zend Framework |
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4 * |
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5 * LICENSE |
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6 * |
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7 * This source file is subject to the new BSD license that is bundled |
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8 * with this package in the file LICENSE.txt. |
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9 * It is also available through the world-wide-web at this URL: |
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10 * http://framework.zend.com/license/new-bsd |
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11 * If you did not receive a copy of the license and are unable to |
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12 * obtain it through the world-wide-web, please send an email |
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13 * to license@zend.com so we can send you a copy immediately. |
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14 * |
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15 * @category Zend |
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16 * @package Zend_Service_Amazon |
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17 * @subpackage Authentication |
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18 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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19 * @license http://framework.zend.com/license/new-bsd New BSD License |
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20 */ |
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21 |
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22 |
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23 /** |
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24 * @see Zend_Service_Amazon_Authentication |
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25 */ |
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26 require_once 'Zend/Service/Amazon/Authentication.php'; |
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27 |
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28 /** |
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29 * @see Zend_Crypt_Hmac |
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30 */ |
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31 require_once 'Zend/Crypt/Hmac.php'; |
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32 |
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33 /** |
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34 * @category Zend |
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35 * @package Zend_Service_Amazon |
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36 * @subpackage Authentication |
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37 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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38 * @license http://framework.zend.com/license/new-bsd New BSD License |
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39 */ |
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40 class Zend_Service_Amazon_Authentication_S3 extends Zend_Service_Amazon_Authentication |
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41 { |
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42 /** |
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43 * Add the S3 Authorization signature to the request headers |
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44 * |
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45 * @param string $method |
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46 * @param string $path |
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47 * @param array &$headers |
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48 * @return string |
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49 */ |
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50 public function generateSignature($method, $path, &$headers) |
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51 { |
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52 if (! is_array($headers)) { |
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53 $headers = array($headers); |
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54 } |
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55 |
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56 $type = $md5 = $date = ''; |
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57 |
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58 // Search for the Content-type, Content-MD5 and Date headers |
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59 foreach ($headers as $key => $val) { |
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60 if (strcasecmp($key, 'content-type') == 0) { |
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61 $type = $val; |
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62 } else if (strcasecmp($key, 'content-md5') == 0) { |
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63 $md5 = $val; |
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64 } else if (strcasecmp($key, 'date') == 0) { |
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65 $date = $val; |
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66 } |
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67 } |
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68 |
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69 // If we have an x-amz-date header, use that instead of the normal Date |
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70 if (isset($headers['x-amz-date']) && isset($date)) { |
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71 $date = ''; |
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72 } |
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73 |
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74 $sig_str = "$method\n$md5\n$type\n$date\n"; |
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75 |
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76 // For x-amz- headers, combine like keys, lowercase them, sort them |
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77 // alphabetically and remove excess spaces around values |
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78 $amz_headers = array(); |
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79 foreach ($headers as $key => $val) { |
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80 $key = strtolower($key); |
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81 if (substr($key, 0, 6) == 'x-amz-') { |
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82 if (is_array($val)) { |
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83 $amz_headers[$key] = $val; |
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84 } else { |
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85 $amz_headers[$key][] = preg_replace('/\s+/', ' ', $val); |
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86 } |
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87 } |
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88 } |
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89 if (!empty($amz_headers)) { |
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90 ksort($amz_headers); |
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91 foreach ($amz_headers as $key => $val) { |
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92 $sig_str .= $key . ':' . implode(',', $val) . "\n"; |
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93 } |
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94 } |
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95 |
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96 $sig_str .= '/'.parse_url($path, PHP_URL_PATH); |
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97 if (strpos($path, '?location') !== false) { |
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98 $sig_str .= '?location'; |
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99 } else |
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100 if (strpos($path, '?acl') !== false) { |
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101 $sig_str .= '?acl'; |
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102 } else |
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103 if (strpos($path, '?torrent') !== false) { |
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104 $sig_str .= '?torrent'; |
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105 } |
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106 |
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107 $signature = base64_encode(Zend_Crypt_Hmac::compute($this->_secretKey, 'sha1', utf8_encode($sig_str), Zend_Crypt_Hmac::BINARY)); |
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108 $headers['Authorization'] = 'AWS ' . $this->_accessKey . ':' . $signature; |
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109 |
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110 return $sig_str; |
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111 } |
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112 } |