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/wp-admin/includes/ -> class-automatic-upgrader-skin.php (source)

   1  <?php
   2  /**
   3   * Upgrader API: Automatic_Upgrader_Skin class
   4   *
   5   * @package WordPress
   6   * @subpackage Upgrader
   7   * @since 4.6.0
   8   */
   9  
  10  /**
  11   * Upgrader Skin for Automatic WordPress Upgrades.
  12   *
  13   * This skin is designed to be used when no output is intended, all output
  14   * is captured and stored for the caller to process and log/email/discard.
  15   *
  16   * @since 3.7.0
  17   * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader-skins.php.
  18   *
  19   * @see Bulk_Upgrader_Skin
  20   */
  21  class Automatic_Upgrader_Skin extends WP_Upgrader_Skin {
  22      protected $messages = array();
  23  
  24      /**
  25       * Determines whether the upgrader needs FTP/SSH details in order to connect
  26       * to the filesystem.
  27       *
  28       * @since 3.7.0
  29       * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string.
  30       *
  31       * @see request_filesystem_credentials()
  32       *
  33       * @param bool|WP_Error $error                        Optional. Whether the current request has failed to connect,
  34       *                                                    or an error object. Default false.
  35       * @param string        $context                      Optional. Full path to the directory that is tested
  36       *                                                    for being writable. Default empty.
  37       * @param bool          $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. Default false.
  38       * @return bool True on success, false on failure.
  39       */
  40  	public function request_filesystem_credentials( $error = false, $context = '', $allow_relaxed_file_ownership = false ) {
  41          if ( $context ) {
  42              $this->options['context'] = $context;
  43          }
  44          /*
  45           * TODO: Fix up request_filesystem_credentials(), or split it, to allow us to request a no-output version.
  46           * This will output a credentials form in event of failure. We don't want that, so just hide with a buffer.
  47           */
  48          ob_start();
  49          $result = parent::request_filesystem_credentials( $error, $context, $allow_relaxed_file_ownership );
  50          ob_end_clean();
  51          return $result;
  52      }
  53  
  54      /**
  55       * Retrieves the upgrade messages.
  56       *
  57       * @since 3.7.0
  58       *
  59       * @return string[] Messages during an upgrade.
  60       */
  61  	public function get_upgrade_messages() {
  62          return $this->messages;
  63      }
  64  
  65      /**
  66       * Stores a message about the upgrade.
  67       *
  68       * @since 3.7.0
  69       *
  70       * @param string|array|WP_Error $data    Message data.
  71       * @param mixed                 ...$args Optional text replacements.
  72       */
  73  	public function feedback( $data, ...$args ) {
  74          if ( is_wp_error( $data ) ) {
  75              $string = $data->get_error_message();
  76          } elseif ( is_array( $data ) ) {
  77              return;
  78          } else {
  79              $string = $data;
  80          }
  81          if ( ! empty( $this->upgrader->strings[ $string ] ) ) {
  82              $string = $this->upgrader->strings[ $string ];
  83          }
  84  
  85          if ( strpos( $string, '%' ) !== false ) {
  86              if ( ! empty( $args ) ) {
  87                  $string = vsprintf( $string, $args );
  88              }
  89          }
  90  
  91          $string = trim( $string );
  92  
  93          // Only allow basic HTML in the messages, as it'll be used in emails/logs rather than direct browser output.
  94          $string = wp_kses(
  95              $string,
  96              array(
  97                  'a'      => array(
  98                      'href' => true,
  99                  ),
 100                  'br'     => true,
 101                  'em'     => true,
 102                  'strong' => true,
 103              )
 104          );
 105  
 106          if ( empty( $string ) ) {
 107              return;
 108          }
 109  
 110          $this->messages[] = $string;
 111      }
 112  
 113      /**
 114       * Creates a new output buffer.
 115       *
 116       * @since 3.7.0
 117       */
 118  	public function header() {
 119          ob_start();
 120      }
 121  
 122      /**
 123       * Retrieves the buffered content, deletes the buffer, and processes the output.
 124       *
 125       * @since 3.7.0
 126       */
 127  	public function footer() {
 128          $output = ob_get_clean();
 129          if ( ! empty( $output ) ) {
 130              $this->feedback( $output );
 131          }
 132      }
 133  }


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