| 1 | <?php |
| 2 | /* |
| 3 | +--------------------------------------------------------------------+ |
| 4 | | Copyright CiviCRM LLC. All rights reserved. | |
| 5 | | | |
| 6 | | This work is published under the GNU AGPLv3 license with some | |
| 7 | | permitted exceptions and without any warranty. For full license | |
| 8 | | and copyright information, see https://civicrm.org/licensing | |
| 9 | +--------------------------------------------------------------------+ |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * This class handles HTTP downloads |
| 14 | * |
| 15 | * FIXME: fetch() and get() report errors differently -- e.g. |
| 16 | * fetch() returns fatal and get() returns an error code. Should |
| 17 | * refactor both (or get a third-party HTTP library) but don't |
| 18 | * want to deal with that so late in the 4.3 dev cycle. |
| 19 | * |
| 20 | * @package CRM |
| 21 | * @copyright CiviCRM LLC https://civicrm.org/licensing |
| 22 | */ |
| 23 | class CRM_Utils_HttpClient { |
| 24 | |
| 25 | const STATUS_OK = 'ok'; |
| 26 | const STATUS_WRITE_ERROR = 'write-error'; |
| 27 | const STATUS_DL_ERROR = 'dl-error'; |
| 28 | |
| 29 | /** |
| 30 | * @var CRM_Utils_HttpClient |
| 31 | */ |
| 32 | protected static $singleton; |
| 33 | |
| 34 | /** |
| 35 | * @var int|null |
| 36 | * seconds; or NULL to use system default |
| 37 | */ |
| 38 | protected $connectionTimeout; |
| 39 | |
| 40 | /** |
| 41 | * @return CRM_Utils_HttpClient |
| 42 | */ |
| 43 | public static function singleton() { |
| 44 | if (!self::$singleton) { |
| 45 | self::$singleton = new CRM_Utils_HttpClient(); |
| 46 | } |
| 47 | return self::$singleton; |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * @param null $connectionTimeout |
| 52 | */ |
| 53 | public function __construct($connectionTimeout = NULL) { |
| 54 | $this->connectionTimeout = $connectionTimeout; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Download the remote zipfile. |
| 59 | * |
| 60 | * @param string $remoteFile |
| 61 | * URL of a .zip file. |
| 62 | * @param string $localFile |
| 63 | * Path at which to store the .zip file. |
| 64 | * @return STATUS_OK|STATUS_WRITE_ERROR|STATUS_DL_ERROR |
| 65 | */ |
| 66 | public function fetch($remoteFile, $localFile) { |
| 67 | // Download extension zip file ... |
| 68 | if (!function_exists('curl_init')) { |
| 69 | CRM_Core_Error::fatal('Cannot install this extension - curl is not installed!'); |
| 70 | } |
| 71 | |
| 72 | list($ch, $caConfig) = $this->createCurl($remoteFile); |
| 73 | if (preg_match('/^https:/', $remoteFile) && !$caConfig->isEnableSSL()) { |
| 74 | CRM_Core_Error::fatal('Cannot install this extension - does not support SSL'); |
| 75 | } |
| 76 | |
| 77 | $fp = @fopen($localFile, "w"); |
| 78 | if (!$fp) { |
| 79 | return self::STATUS_WRITE_ERROR; |
| 80 | } |
| 81 | curl_setopt($ch, CURLOPT_FILE, $fp); |
| 82 | |
| 83 | curl_exec($ch); |
| 84 | if (curl_errno($ch)) { |
| 85 | return self::STATUS_DL_ERROR; |
| 86 | } |
| 87 | else { |
| 88 | curl_close($ch); |
| 89 | } |
| 90 | |
| 91 | fclose($fp); |
| 92 | |
| 93 | return self::STATUS_OK; |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Send an HTTP GET for a remote resource. |
| 98 | * |
| 99 | * @param string $remoteFile |
| 100 | * URL of remote file. |
| 101 | * @return array |
| 102 | * array(0 => STATUS_OK|STATUS_DL_ERROR, 1 => string) |
| 103 | */ |
| 104 | public function get($remoteFile) { |
| 105 | // Download extension zip file ... |
| 106 | if (!function_exists('curl_init')) { |
| 107 | // CRM-13805 |
| 108 | CRM_Core_Session::setStatus( |
| 109 | ts('As a result, actions like retrieving the CiviCRM news feed will fail. Talk to your server administrator or hosting company to rectify this.'), |
| 110 | ts('Curl is not installed') |
| 111 | ); |
| 112 | return [self::STATUS_DL_ERROR, NULL]; |
| 113 | } |
| 114 | |
| 115 | list($ch, $caConfig) = $this->createCurl($remoteFile); |
| 116 | |
| 117 | if (preg_match('/^https:/', $remoteFile) && !$caConfig->isEnableSSL()) { |
| 118 | // CRM_Core_Error::fatal('Cannot install this extension - does not support SSL'); |
| 119 | return [self::STATUS_DL_ERROR, NULL]; |
| 120 | } |
| 121 | |
| 122 | curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); |
| 123 | $data = curl_exec($ch); |
| 124 | if (curl_errno($ch)) { |
| 125 | return [self::STATUS_DL_ERROR, $data]; |
| 126 | } |
| 127 | else { |
| 128 | curl_close($ch); |
| 129 | } |
| 130 | |
| 131 | return [self::STATUS_OK, $data]; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Send an HTTP POST for a remote resource. |
| 136 | * |
| 137 | * @param string $remoteFile |
| 138 | * URL of a .zip file. |
| 139 | * @param array $params |
| 140 | * |
| 141 | * @return array |
| 142 | * array(0 => STATUS_OK|STATUS_DL_ERROR, 1 => string) |
| 143 | */ |
| 144 | public function post($remoteFile, $params) { |
| 145 | // Download extension zip file ... |
| 146 | if (!function_exists('curl_init')) { |
| 147 | //CRM_Core_Error::fatal('Cannot install this extension - curl is not installed!'); |
| 148 | return [self::STATUS_DL_ERROR, NULL]; |
| 149 | } |
| 150 | |
| 151 | list($ch, $caConfig) = $this->createCurl($remoteFile); |
| 152 | |
| 153 | if (preg_match('/^https:/', $remoteFile) && !$caConfig->isEnableSSL()) { |
| 154 | // CRM_Core_Error::fatal('Cannot install this extension - does not support SSL'); |
| 155 | return [self::STATUS_DL_ERROR, NULL]; |
| 156 | } |
| 157 | |
| 158 | curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); |
| 159 | curl_setopt($ch, CURLOPT_POST, TRUE); |
| 160 | curl_setopt($ch, CURLOPT_POST, count($params)); |
| 161 | curl_setopt($ch, CURLOPT_POSTFIELDS, $params); |
| 162 | $data = curl_exec($ch); |
| 163 | if (curl_errno($ch)) { |
| 164 | return [self::STATUS_DL_ERROR, $data]; |
| 165 | } |
| 166 | else { |
| 167 | curl_close($ch); |
| 168 | } |
| 169 | |
| 170 | return [self::STATUS_OK, $data]; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * @param string $remoteFile |
| 175 | * @return array |
| 176 | * (0 => resource, 1 => CA_Config_Curl) |
| 177 | */ |
| 178 | protected function createCurl($remoteFile) { |
| 179 | $caConfig = CA_Config_Curl::probe([ |
| 180 | 'verify_peer' => (bool) Civi::settings()->get('verifySSL'), |
| 181 | ]); |
| 182 | |
| 183 | $ch = curl_init(); |
| 184 | curl_setopt($ch, CURLOPT_URL, $remoteFile); |
| 185 | curl_setopt($ch, CURLOPT_HEADER, FALSE); |
| 186 | curl_setopt($ch, CURLOPT_ENCODING, 'gzip'); |
| 187 | curl_setopt($ch, CURLOPT_VERBOSE, 0); |
| 188 | if ($this->isRedirectSupported()) { |
| 189 | curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE); |
| 190 | } |
| 191 | if ($this->connectionTimeout !== NULL) { |
| 192 | curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $this->connectionTimeout); |
| 193 | } |
| 194 | if (preg_match('/^https:/', $remoteFile) && $caConfig->isEnableSSL()) { |
| 195 | curl_setopt_array($ch, $caConfig->toCurlOptions()); |
| 196 | } |
| 197 | |
| 198 | return [$ch, $caConfig]; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * @return bool |
| 203 | */ |
| 204 | public function isRedirectSupported() { |
| 205 | return (ini_get('open_basedir') == '') && (ini_get('safe_mode') == 'Off' || ini_get('safe_mode') == '' || ini_get('safe_mode') === FALSE); |
| 206 | } |
| 207 | |
| 208 | } |