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   1  <?php
   2  /**
   3   * Multisite upgrade administration panel.
   4   *
   5   * @package WordPress
   6   * @subpackage Multisite
   7   * @since 3.0.0
   8   */
   9  
  10  /** Load WordPress Administration Bootstrap */
  11  require_once  __DIR__ . '/admin.php';
  12  
  13  require_once ABSPATH . WPINC . '/http.php';
  14  
  15  // Used in the HTML title tag.
  16  $title       = __( 'Upgrade Network' );
  17  $parent_file = 'upgrade.php';
  18  
  19  get_current_screen()->add_help_tab(
  20      array(
  21          'id'      => 'overview',
  22          'title'   => __( 'Overview' ),
  23          'content' =>
  24              '<p>' . __( 'Only use this screen once you have updated to a new version of WordPress through Updates/Available Updates (via the Network Administration navigation menu or the Toolbar). Clicking the Upgrade Network button will step through each site in the network, five at a time, and make sure any database updates are applied.' ) . '</p>' .
  25              '<p>' . __( 'If a version update to core has not happened, clicking this button will not affect anything.' ) . '</p>' .
  26              '<p>' . __( 'If this process fails for any reason, users logging in to their sites will force the same update.' ) . '</p>',
  27      )
  28  );
  29  
  30  get_current_screen()->set_help_sidebar(
  31      '<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
  32      '<p>' . __( '<a href="https://developer.wordpress.org/advanced-administration/multisite/admin/">Documentation on Upgrade Network</a>' ) . '</p>' .
  33      '<p>' . __( '<a href="https://wordpress.org/support/forums/">Support forums</a>' ) . '</p>'
  34  );
  35  
  36  require_once  ABSPATH . 'wp-admin/admin-header.php';
  37  
  38  if ( ! current_user_can( 'upgrade_network' ) ) {
  39      wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
  40  }
  41  
  42  echo '<div class="wrap">';
  43  echo '<h1>' . __( 'Upgrade Network' ) . '</h1>';
  44  
  45  $action = isset( $_GET['action'] ) ? $_GET['action'] : 'show';
  46  
  47  switch ( $action ) {
  48      case 'upgrade':
  49          $n = ( isset( $_GET['n'] ) ) ? (int) $_GET['n'] : 0;
  50  
  51          if ( $n < 5 ) {
  52              /**
  53               * @global int $wp_db_version WordPress database version.
  54               */
  55              global $wp_db_version;
  56              update_site_option( 'wpmu_upgrade_site', $wp_db_version );
  57          }
  58  
  59          $site_ids = get_sites(
  60              array(
  61                  'spam'                   => 0,
  62                  'deleted'                => 0,
  63                  'archived'               => 0,
  64                  'network_id'             => get_current_network_id(),
  65                  'number'                 => 5,
  66                  'offset'                 => $n,
  67                  'fields'                 => 'ids',
  68                  'order'                  => 'DESC',
  69                  'orderby'                => 'id',
  70                  'update_site_meta_cache' => false,
  71              )
  72          );
  73          if ( empty( $site_ids ) ) {
  74              echo '<p>' . __( 'All done!' ) . '</p>';
  75              break;
  76          }
  77          echo '<ul>';
  78          foreach ( (array) $site_ids as $site_id ) {
  79              switch_to_blog( $site_id );
  80              $siteurl     = site_url();
  81              $upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );
  82              restore_current_blog();
  83  
  84              echo "<li>$siteurl</li>";
  85  
  86              $response = wp_remote_get(
  87                  $upgrade_url,
  88                  array(
  89                      'timeout'     => 120,
  90                      'httpversion' => '1.1',
  91                      'sslverify'   => false,
  92                  )
  93              );
  94  
  95              if ( is_wp_error( $response ) ) {
  96                  wp_die(
  97                      sprintf(
  98                          /* translators: 1: Site URL, 2: Server error message. */
  99                          __( 'Warning! Problem updating %1$s. Your server may not be able to connect to sites running on it. Error message: %2$s' ),
 100                          $siteurl,
 101                          '<em>' . $response->get_error_message() . '</em>'
 102                      )
 103                  );
 104              }
 105  
 106              /**
 107               * Fires after the Multisite DB upgrade for each site is complete.
 108               *
 109               * @since MU (3.0.0)
 110               *
 111               * @param array $response The upgrade response array.
 112               */
 113              do_action( 'after_mu_upgrade', $response );
 114  
 115              /**
 116               * Fires after each site has been upgraded.
 117               *
 118               * @since MU (3.0.0)
 119               *
 120               * @param int $site_id The Site ID.
 121               */
 122              do_action( 'wpmu_upgrade_site', $site_id );
 123          }
 124          echo '</ul>';
 125          ?><p><?php _e( 'If your browser does not start loading the next page automatically, click this link:' ); ?> <a class="button" href="upgrade.php?action=upgrade&amp;n=<?php echo ( $n + 5 ); ?>"><?php _e( 'Next Sites' ); ?></a></p>
 126          <script type="text/javascript">
 127          <!--
 128  		function nextpage() {
 129              location.href = "upgrade.php?action=upgrade&n=<?php echo ( $n + 5 ); ?>";
 130          }
 131          setTimeout( "nextpage()", 250 );
 132          //-->
 133          </script>
 134          <?php
 135          break;
 136      case 'show':
 137      default:
 138          if ( (int) get_site_option( 'wpmu_upgrade_site' ) !== $GLOBALS['wp_db_version'] ) :
 139              ?>
 140          <h2><?php _e( 'Database Update Required' ); ?></h2>
 141          <p><?php _e( 'WordPress has been updated! Next and final step is to individually upgrade the sites in your network.' ); ?></p>
 142          <?php endif; ?>
 143  
 144          <p><?php _e( 'The database update process may take a little while, so please be patient.' ); ?></p>
 145          <p><a class="button button-primary" href="upgrade.php?action=upgrade"><?php _e( 'Upgrade Network' ); ?></a></p>
 146          <?php
 147          /**
 148           * Fires before the footer on the network upgrade screen.
 149           *
 150           * @since MU (3.0.0)
 151           */
 152          do_action( 'wpmu_upgrade_page' );
 153          break;
 154  }
 155  ?>
 156  </div>
 157  
 158  <?php require_once  ABSPATH . 'wp-admin/admin-footer.php'; ?>