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   1  <?php
   2  
   3  // The admin side of our 1.0 update system
   4  
   5  function core_update_footer( $msg ) {
   6      if ( !current_user_can('manage_options') )
   7          return sprintf( '| '.__( 'Version %s' ), $GLOBALS['wp_version'] );
   8  
   9      $cur = get_option( 'update_core' );
  10  
  11      switch ( $cur->response ) {
  12      case 'development' :
  13          return sprintf( '| '.__( 'You are using a development version (%s). Cool! Please <a href="%s">stay updated</a>.' ), $GLOBALS['wp_version'], 'http://wordpress.org/download/svn/' );
  14      break;
  15  
  16      case 'upgrade' :
  17          return sprintf( '| <strong>'.__( 'Your WordPress %s is out of date. <a href="%s">Please update</a>.' ).'</strong>', $GLOBALS['wp_version'], $cur->url );
  18      break;
  19  
  20      case 'latest' :
  21      default :
  22          return sprintf( '| '.__( 'Version %s' ), $GLOBALS['wp_version'] );
  23      break;
  24      }
  25  }
  26  add_filter( 'update_footer', 'core_update_footer' );
  27  
  28  function update_nag() {
  29      $cur = get_option( 'update_core' );
  30  
  31      if ( ! isset( $cur->response ) || $cur->response != 'upgrade' )
  32          return false;
  33  
  34      if ( current_user_can('manage_options') )
  35          $msg = sprintf( __('A new version of WordPress is available! <a href="%s">Please update now</a>.'), $cur->url );
  36      else
  37          $msg = __('A new version of WordPress is available! Please notify the site administrator.');
  38  
  39      echo "<div id='update-nag'>$msg</div>";
  40  }
  41  add_action( 'admin_notices', 'update_nag', 3 );
  42  
  43  function wp_update_plugins() {
  44      global $wp_version;
  45  
  46      if ( !function_exists('fsockopen') )
  47          return false;
  48  
  49      $plugins = get_plugins();
  50      $active  = get_option( 'active_plugins' );
  51      $current = get_option( 'update_plugins' );
  52  
  53      $new_option = '';
  54      $new_option->last_checked = time();
  55  
  56      $plugin_changed = false;
  57      foreach ( $plugins as $file => $p ) {
  58          $new_option->checked[ $file ] = $p['Version'];
  59  
  60          if ( !isset( $current->checked[ $file ] ) ) {
  61              $plugin_changed = true;
  62              continue;
  63          }
  64  
  65          if ( $current->checked[ $file ] != $p['Version'] )
  66              $plugin_changed = true;
  67      }
  68  
  69      if (
  70          isset( $current->last_checked ) &&
  71          43200 > ( time() - $current->last_checked ) &&
  72          !$plugin_changed
  73      )
  74          return false;
  75  
  76      $to_send->plugins = $plugins;
  77      $to_send->active = $active;
  78      $send = serialize( $to_send );
  79  
  80      $request = 'plugins=' . urlencode( $send );
  81      $http_request  = "POST /plugins/update-check/1.0/ HTTP/1.0\r\n";
  82      $http_request .= "Host: api.wordpress.org\r\n";
  83      $http_request .= "Content-Type: application/x-www-form-urlencoded; charset=" . get_option('blog_charset') . "\r\n";
  84      $http_request .= "Content-Length: " . strlen($request) . "\r\n";
  85      $http_request .= 'User-Agent: WordPress/' . $wp_version . '; ' . get_bloginfo('url') . "\r\n";
  86      $http_request .= "\r\n";
  87      $http_request .= $request;
  88  
  89      $response = '';
  90      if( false != ( $fs = @fsockopen( 'api.wordpress.org', 80, $errno, $errstr, 3) ) && is_resource($fs) ) {
  91          fwrite($fs, $http_request);
  92  
  93          while ( !feof($fs) )
  94              $response .= fgets($fs, 1160); // One TCP-IP packet
  95          fclose($fs);
  96          $response = explode("\r\n\r\n", $response, 2);
  97      }
  98  
  99      $response = unserialize( $response[1] );
 100  
 101      if ( $response )
 102          $new_option->response = $response;
 103  
 104      update_option( 'update_plugins', $new_option );
 105  }
 106  add_action( 'load-plugins.php', 'wp_update_plugins' );
 107  
 108  function wp_plugin_update_row( $file ) {
 109      global $plugin_data;
 110      $current = get_option( 'update_plugins' );
 111      if ( !isset( $current->response[ $file ] ) )
 112          return false;
 113  
 114      $r = $current->response[ $file ];
 115  
 116      echo "<tr><td colspan='5' class='plugin-update'>";
 117      printf( __('There is a new version of %s available. <a href="%s">Download version %s here</a>.'), $plugin_data['Name'], $r->url, $r->new_version );
 118      echo "</td></tr>";
 119  }
 120  add_action( 'after_plugin_row', 'wp_plugin_update_row' );
 121  
 122  ?>