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   1  <?php
   2  /**
   3   * Edit plugin editor administration panel.
   4   *
   5   * @package WordPress
   6   * @subpackage Administration
   7   */
   8  
   9  /** WordPress Administration Bootstrap */
  10  require_once( dirname( __FILE__ ) . '/admin.php' );
  11  
  12  if ( is_multisite() && ! is_network_admin() ) {
  13      wp_redirect( network_admin_url( 'plugin-editor.php' ) );
  14      exit();
  15  }
  16  
  17  if ( !current_user_can('edit_plugins') )
  18      wp_die( __('You do not have sufficient permissions to edit plugins for this site.') );
  19  
  20  $title = __("Edit Plugins");
  21  $parent_file = 'plugins.php';
  22  
  23  wp_reset_vars( array( 'action', 'error', 'file', 'plugin' ) );
  24  
  25  $plugins = get_plugins();
  26  
  27  if ( empty($plugins) )
  28      wp_die( __('There are no plugins installed on this site.') );
  29  
  30  if ( $file ) {
  31      $plugin = $file;
  32  } elseif ( empty( $plugin ) ) {
  33      $plugin = array_keys($plugins);
  34      $plugin = $plugin[0];
  35  }
  36  
  37  $plugin_files = get_plugin_files($plugin);
  38  
  39  if ( empty($file) )
  40      $file = $plugin_files[0];
  41  
  42  $file = validate_file_to_edit($file, $plugin_files);
  43  $real_file = WP_PLUGIN_DIR . '/' . $file;
  44  $scrollto = isset($_REQUEST['scrollto']) ? (int) $_REQUEST['scrollto'] : 0;
  45  
  46  switch ( $action ) {
  47  
  48  case 'update':
  49  
  50      check_admin_referer('edit-plugin_' . $file);
  51  
  52      $newcontent = wp_unslash( $_POST['newcontent'] );
  53      if ( is_writeable($real_file) ) {
  54          $f = fopen($real_file, 'w+');
  55          fwrite($f, $newcontent);
  56          fclose($f);
  57  
  58          $network_wide = is_plugin_active_for_network( $file );
  59  
  60          // Deactivate so we can test it.
  61          if ( is_plugin_active($file) || isset($_POST['phperror']) ) {
  62              if ( is_plugin_active($file) )
  63                  deactivate_plugins($file, true);
  64  
  65              if ( ! is_network_admin() )
  66                  update_option( 'recently_activated', array( $file => time() ) + (array) get_option( 'recently_activated' ) );
  67  
  68              wp_redirect(add_query_arg('_wpnonce', wp_create_nonce('edit-plugin-test_' . $file), "plugin-editor.php?file=$file&liveupdate=1&scrollto=$scrollto&networkwide=" . $network_wide));
  69              exit;
  70          }
  71          wp_redirect( self_admin_url("plugin-editor.php?file=$file&a=te&scrollto=$scrollto") );
  72      } else {
  73          wp_redirect( self_admin_url("plugin-editor.php?file=$file&scrollto=$scrollto") );
  74      }
  75      exit;
  76  
  77  break;
  78  
  79  default:
  80  
  81      if ( isset($_GET['liveupdate']) ) {
  82          check_admin_referer('edit-plugin-test_' . $file);
  83  
  84          $error = validate_plugin($file);
  85          if ( is_wp_error($error) )
  86              wp_die( $error );
  87  
  88          if ( ( ! empty( $_GET['networkwide'] ) && ! is_plugin_active_for_network($file) ) || ! is_plugin_active($file) )
  89              activate_plugin($file, "plugin-editor.php?file=$file&phperror=1", ! empty( $_GET['networkwide'] ) ); // we'll override this later if the plugin can be included without fatal error
  90  
  91          wp_redirect( self_admin_url("plugin-editor.php?file=$file&a=te&scrollto=$scrollto") );
  92          exit;
  93      }
  94  
  95      // List of allowable extensions
  96      $editable_extensions = array('php', 'txt', 'text', 'js', 'css', 'html', 'htm', 'xml', 'inc', 'include');
  97  
  98      /**
  99       * Filter file type extensions editable in the plugin editor.
 100       *
 101       * @since 2.8.0
 102       *
 103       * @param array $editable_extensions An array of editable plugin file extensions.
 104       */
 105      $editable_extensions = (array) apply_filters( 'editable_extensions', $editable_extensions );
 106  
 107      if ( ! is_file($real_file) ) {
 108          wp_die(sprintf('<p>%s</p>', __('No such file exists! Double check the name and try again.')));
 109      } else {
 110          // Get the extension of the file
 111          if ( preg_match('/\.([^.]+)$/', $real_file, $matches) ) {
 112              $ext = strtolower($matches[1]);
 113              // If extension is not in the acceptable list, skip it
 114              if ( !in_array( $ext, $editable_extensions) )
 115                  wp_die(sprintf('<p>%s</p>', __('Files of this type are not editable.')));
 116          }
 117      }
 118  
 119      get_current_screen()->add_help_tab( array(
 120      'id'        => 'overview',
 121      'title'        => __('Overview'),
 122      'content'    =>
 123          '<p>' . __('You can use the editor to make changes to any of your plugins&#8217; individual PHP files. Be aware that if you make changes, plugins updates will overwrite your customizations.') . '</p>' .
 124          '<p>' . __('Choose a plugin to edit from the menu in the upper right and click the Select button. Click once on any file name to load it in the editor, and make your changes. Don&#8217;t forget to save your changes (Update File) when you&#8217;re finished.') . '</p>' .
 125          '<p>' . __('The Documentation menu below the editor lists the PHP functions recognized in the plugin file. Clicking Look Up takes you to a web page about that particular function.') . '</p>' .
 126          '<p id="newcontent-description">' . __('In the editing area the Tab key enters a tab character. To move below this area by pressing Tab, press the Esc key followed by the Tab key.') . '</p>' .
 127          '<p>' . __('If you want to make changes but don&#8217;t want them to be overwritten when the plugin is updated, you may be ready to think about writing your own plugin. For information on how to edit plugins, write your own from scratch, or just better understand their anatomy, check out the links below.') . '</p>' .
 128          ( is_network_admin() ? '<p>' . __('Any edits to files from this screen will be reflected on all sites in the network.') . '</p>' : '' )
 129      ) );
 130  
 131      get_current_screen()->set_help_sidebar(
 132          '<p><strong>' . __('For more information:') . '</strong></p>' .
 133          '<p>' . __('<a href="http://codex.wordpress.org/Plugins_Editor_Screen" target="_blank">Documentation on Editing Plugins</a>') . '</p>' .
 134          '<p>' . __('<a href="http://codex.wordpress.org/Writing_a_Plugin" target="_blank">Documentation on Writing Plugins</a>') . '</p>' .
 135          '<p>' . __('<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
 136      );
 137  
 138      require_once (ABSPATH . 'wp-admin/admin-header.php');
 139  
 140      update_recently_edited(WP_PLUGIN_DIR . '/' . $file);
 141  
 142      $content = file_get_contents( $real_file );
 143  
 144      if ( '.php' == substr( $real_file, strrpos( $real_file, '.' ) ) ) {
 145          $functions = wp_doc_link_parse( $content );
 146  
 147          if ( !empty($functions) ) {
 148              $docs_select = '<select name="docs-list" id="docs-list">';
 149              $docs_select .= '<option value="">' . __( 'Function Name&hellip;' ) . '</option>';
 150              foreach ( $functions as $function) {
 151                  $docs_select .= '<option value="' . esc_attr( $function ) . '">' . esc_html( $function ) . '()</option>';
 152              }
 153              $docs_select .= '</select>';
 154          }
 155      }
 156  
 157      $content = esc_textarea( $content );
 158      ?>
 159  <?php if (isset($_GET['a'])) : ?>
 160   <div id="message" class="updated"><p><?php _e('File edited successfully.') ?></p></div>
 161  <?php elseif (isset($_GET['phperror'])) : ?>
 162   <div id="message" class="updated"><p><?php _e('This plugin has been deactivated because your changes resulted in a <strong>fatal error</strong>.') ?></p>
 163      <?php
 164          if ( wp_verify_nonce($_GET['_error_nonce'], 'plugin-activation-error_' . $file) ) { ?>
 165      <iframe style="border:0" width="100%" height="70px" src="<?php bloginfo('wpurl'); ?>/wp-admin/plugins.php?action=error_scrape&amp;plugin=<?php echo esc_attr($file); ?>&amp;_wpnonce=<?php echo esc_attr($_GET['_error_nonce']); ?>"></iframe>
 166      <?php } ?>
 167  </div>
 168  <?php endif; ?>
 169  <div class="wrap">
 170  <h2><?php echo esc_html( $title ); ?></h2>
 171  
 172  <div class="fileedit-sub">
 173  <div class="alignleft">
 174  <big><?php
 175      if ( is_plugin_active($plugin) ) {
 176          if ( is_writeable($real_file) )
 177              echo sprintf(__('Editing <strong>%s</strong> (active)'), $file);
 178          else
 179              echo sprintf(__('Browsing <strong>%s</strong> (active)'), $file);
 180      } else {
 181          if ( is_writeable($real_file) )
 182              echo sprintf(__('Editing <strong>%s</strong> (inactive)'), $file);
 183          else
 184              echo sprintf(__('Browsing <strong>%s</strong> (inactive)'), $file);
 185      }
 186      ?></big>
 187  </div>
 188  <div class="alignright">
 189      <form action="plugin-editor.php" method="post">
 190          <strong><label for="plugin"><?php _e('Select plugin to edit:'); ?> </label></strong>
 191          <select name="plugin" id="plugin">
 192  <?php
 193      foreach ( $plugins as $plugin_key => $a_plugin ) {
 194          $plugin_name = $a_plugin['Name'];
 195          if ( $plugin_key == $plugin )
 196              $selected = " selected='selected'";
 197          else
 198              $selected = '';
 199          $plugin_name = esc_attr($plugin_name);
 200          $plugin_key = esc_attr($plugin_key);
 201          echo "\n\t<option value=\"$plugin_key\" $selected>$plugin_name</option>";
 202      }
 203  ?>
 204          </select>
 205          <?php submit_button( __( 'Select' ), 'button', 'Submit', false ); ?>
 206      </form>
 207  </div>
 208  <br class="clear" />
 209  </div>
 210  
 211  <div id="templateside">
 212      <h3><?php _e('Plugin Files'); ?></h3>
 213  
 214      <ul>
 215  <?php
 216  foreach ( $plugin_files as $plugin_file ) :
 217      // Get the extension of the file
 218      if ( preg_match('/\.([^.]+)$/', $plugin_file, $matches) ) {
 219          $ext = strtolower($matches[1]);
 220          // If extension is not in the acceptable list, skip it
 221          if ( !in_array( $ext, $editable_extensions ) )
 222              continue;
 223      } else {
 224          // No extension found
 225          continue;
 226      }
 227  ?>
 228          <li<?php echo $file == $plugin_file ? ' class="highlight"' : ''; ?>><a href="plugin-editor.php?file=<?php echo urlencode( $plugin_file ) ?>&amp;plugin=<?php echo urlencode( $plugin ) ?>"><?php echo $plugin_file ?></a></li>
 229  <?php endforeach; ?>
 230      </ul>
 231  </div>
 232  <form name="template" id="template" action="plugin-editor.php" method="post">
 233      <?php wp_nonce_field('edit-plugin_' . $file) ?>
 234          <div><textarea cols="70" rows="25" name="newcontent" id="newcontent" aria-describedby="newcontent-description"><?php echo $content; ?></textarea>
 235          <input type="hidden" name="action" value="update" />
 236          <input type="hidden" name="file" value="<?php echo esc_attr($file) ?>" />
 237          <input type="hidden" name="plugin" value="<?php echo esc_attr($plugin) ?>" />
 238          <input type="hidden" name="scrollto" id="scrollto" value="<?php echo $scrollto; ?>" />
 239          </div>
 240          <?php if ( !empty( $docs_select ) ) : ?>
 241          <div id="documentation" class="hide-if-no-js"><label for="docs-list"><?php _e('Documentation:') ?></label> <?php echo $docs_select ?> <input type="button" class="button" value="<?php esc_attr_e( 'Look Up' ) ?> " onclick="if ( '' != jQuery('#docs-list').val() ) { window.open( 'http://api.wordpress.org/core/handbook/1.0/?function=' + escape( jQuery( '#docs-list' ).val() ) + '&amp;locale=<?php echo urlencode( get_locale() ) ?>&amp;version=<?php echo urlencode( $wp_version ) ?>&amp;redirect=true'); }" /></div>
 242          <?php endif; ?>
 243  <?php if ( is_writeable($real_file) ) : ?>
 244      <?php if ( in_array( $file, (array) get_option( 'active_plugins', array() ) ) ) { ?>
 245          <p><?php _e('<strong>Warning:</strong> Making changes to active plugins is not recommended. If your changes cause a fatal error, the plugin will be automatically deactivated.'); ?></p>
 246      <?php } ?>
 247      <p class="submit">
 248      <?php
 249          if ( isset($_GET['phperror']) ) {
 250              echo "<input type='hidden' name='phperror' value='1' />";
 251              submit_button( __( 'Update File and Attempt to Reactivate' ), 'primary', 'submit', false );
 252          } else {
 253              submit_button( __( 'Update File' ), 'primary', 'submit', false );
 254          }
 255      ?>
 256      </p>
 257  <?php else : ?>
 258      <p><em><?php _e('You need to make this file writable before you can save your changes. See <a href="http://codex.wordpress.org/Changing_File_Permissions">the Codex</a> for more information.'); ?></em></p>
 259  <?php endif; ?>
 260  </form>
 261  <br class="clear" />
 262  </div>
 263  <script type="text/javascript">
 264  jQuery(document).ready(function($){
 265      $('#template').submit(function(){ $('#scrollto').val( $('#newcontent').scrollTop() ); });
 266      $('#newcontent').scrollTop( $('#scrollto').val() );
 267  });
 268  </script>
 269  <?php
 270      break;
 271  }
 272  include (ABSPATH . "wp-admin/admin-footer.php");