public static function init()
 {
     self::$flags = 0;
     self::$os_identifier_sha1 = sha1(phodevi::read_property('system', 'vendor-identifier'));
     self::$is_live_cd = 1 << 1;
     self::$no_network_communication = 1 << 2;
     self::$no_openbenchmarking_reporting = 1 << 3;
     self::$user_agreement_skip = 1 << 4;
     self::$skip_md5_checks = 1 << 5;
     self::$remove_test_on_completion = 1 << 6;
     self::$no_phodevi_cache = 1 << 7;
     self::$no_external_dependencies = 1 << 8;
     self::$upload_to_openbenchmarking = 1 << 9;
     switch (self::$os_identifier_sha1) {
         case 'b28d6a7148b34595c5b397dfcf5b12ac7932b3dc':
             // Moscow 2011-04 client
             self::$flags = self::$is_live_cd | self::$no_network_communication | self::$no_openbenchmarking_reporting | self::$user_agreement_skip | self::$skip_md5_checks | self::$remove_test_on_completion;
             break;
     }
     if (pts_client::read_env('NO_FILE_HASH_CHECKS') != false || pts_client::read_env('NO_MD5_CHECKS') != false) {
         self::$flags |= self::$skip_md5_checks;
     }
     if (pts_config::read_bool_config('PhoronixTestSuite/Options/Testing/RemoveTestInstallOnCompletion', 'FALSE')) {
         self::$flags |= self::$remove_test_on_completion;
     }
     if (pts_config::read_bool_config('PhoronixTestSuite/Options/Testing/AlwaysUploadResultsToOpenBenchmarking', 'FALSE')) {
         self::$flags |= self::$upload_to_openbenchmarking;
     }
     if (pts_client::read_env('NO_PHODEVI_CACHE') != false) {
         self::$flags |= self::$no_phodevi_cache;
     }
     if (pts_client::read_env('NO_EXTERNAL_DEPENDENCIES') != false || pts_client::read_env('SKIP_EXTERNAL_DEPENDENCIES') == 1) {
         // NO_EXTERNAL_DEPENDENCIES was deprecated in PTS 3.6 and replaced by more versatile SKIP_EXTERNAL_DEPENDENCIES
         self::$flags |= self::$no_external_dependencies;
     }
 }
 public function check_file_hash($file)
 {
     if (!is_file($file)) {
         return false;
     } else {
         if (pts_client::read_env('NO_FILE_HASH_CHECKS') != false || pts_flags::skip_md5_checks()) {
             return true;
         } else {
             if ($this->sha256) {
                 return hash_file('sha256', $file) == $this->sha256;
             } else {
                 if ($this->md5) {
                     return md5_file($file) == $this->md5;
                 } else {
                     if (filesize($file) > 0) {
                         return true;
                     } else {
                         return false;
                     }
                 }
             }
         }
     }
 }