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