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/wp-admin/ -> theme-editor.php (source)

   1  <?php
   2  /**
   3   * Theme file editor administration panel.
   4   *
   5   * @package WordPress
   6   * @subpackage Administration
   7   */
   8  
   9  /** WordPress Administration Bootstrap */
  10  require_once  __DIR__ . '/admin.php';
  11  
  12  if ( is_multisite() && ! is_network_admin() ) {
  13      wp_redirect( network_admin_url( 'theme-editor.php' ) );
  14      exit;
  15  }
  16  
  17  if ( ! current_user_can( 'edit_themes' ) ) {
  18      wp_die( '<p>' . __( 'Sorry, you are not allowed to edit templates for this site.' ) . '</p>' );
  19  }
  20  
  21  // Used in the HTML title tag.
  22  $title       = __( 'Edit Themes' );
  23  $parent_file = 'themes.php';
  24  
  25  get_current_screen()->add_help_tab(
  26      array(
  27          'id'      => 'overview',
  28          'title'   => __( 'Overview' ),
  29          'content' =>
  30                  '<p>' . __( 'You can use the theme file editor to edit the individual CSS and PHP files which make up your theme.' ) . '</p>' .
  31                  '<p>' . __( 'Begin by choosing a theme to edit from the dropdown menu and clicking the Select button. A list then appears of the theme&#8217;s template files. Clicking once on any file name causes the file to appear in the large Editor box.' ) . '</p>' .
  32                  '<p>' . __( 'For PHP files, you can use the documentation dropdown to select from functions recognized in that file. Look Up takes you to a web page with reference material about that particular function.' ) . '</p>' .
  33                  '<p id="editor-keyboard-trap-help-1">' . __( 'When using a keyboard to navigate:' ) . '</p>' .
  34                  '<ul>' .
  35                  '<li id="editor-keyboard-trap-help-2">' . __( 'In the editing area, the Tab key enters a tab character.' ) . '</li>' .
  36                  '<li id="editor-keyboard-trap-help-3">' . __( 'To move away from this area, press the Esc key followed by the Tab key.' ) . '</li>' .
  37                  '<li id="editor-keyboard-trap-help-4">' . __( 'Screen reader users: when in forms mode, you may need to press the Esc key twice.' ) . '</li>' .
  38                  '</ul>' .
  39                  '<p>' . __( 'After typing in your edits, click Update File.' ) . '</p>' .
  40                  '<p>' . __( '<strong>Advice:</strong> Think very carefully about your site crashing if you are live-editing the theme currently in use.' ) . '</p>' .
  41                  '<p>' . sprintf(
  42                      /* translators: %s: Link to documentation on child themes. */
  43                      __( 'Upgrading to a newer version of the same theme will override changes made here. To avoid this, consider creating a <a href="%s">child theme</a> instead.' ),
  44                      __( 'https://developer.wordpress.org/themes/advanced-topics/child-themes/' )
  45                  ) . '</p>' .
  46                  ( is_network_admin() ? '<p>' . __( 'Any edits to files from this screen will be reflected on all sites in the network.' ) . '</p>' : '' ),
  47      )
  48  );
  49  
  50  get_current_screen()->set_help_sidebar(
  51      '<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
  52      '<p>' . __( '<a href="https://developer.wordpress.org/themes/">Documentation on Theme Development</a>' ) . '</p>' .
  53      '<p>' . __( '<a href="https://wordpress.org/documentation/article/appearance-theme-file-editor-screen/">Documentation on Editing Themes</a>' ) . '</p>' .
  54      '<p>' . __( '<a href="https://developer.wordpress.org/advanced-administration/wordpress/edit-files/">Documentation on Editing Files</a>' ) . '</p>' .
  55      '<p>' . __( '<a href="https://developer.wordpress.org/themes/basics/template-tags/">Documentation on Template Tags</a>' ) . '</p>' .
  56      '<p>' . __( '<a href="https://wordpress.org/support/forums/">Support forums</a>' ) . '</p>'
  57  );
  58  
  59  $action = ! empty( $_REQUEST['action'] ) ? sanitize_text_field( $_REQUEST['action'] ) : '';
  60  $theme  = ! empty( $_REQUEST['theme'] ) ? sanitize_text_field( $_REQUEST['theme'] ) : '';
  61  $file   = ! empty( $_REQUEST['file'] ) ? sanitize_text_field( $_REQUEST['file'] ) : '';
  62  $error  = ! empty( $_REQUEST['error'] );
  63  
  64  if ( $theme ) {
  65      $stylesheet = $theme;
  66  } else {
  67      $stylesheet = get_stylesheet();
  68  }
  69  
  70  $theme = wp_get_theme( $stylesheet );
  71  
  72  if ( ! $theme->exists() ) {
  73      wp_die( __( 'The requested theme does not exist.' ) );
  74  }
  75  
  76  if ( $theme->errors() && 'theme_no_stylesheet' === $theme->errors()->get_error_code() ) {
  77      wp_die( __( 'The requested theme does not exist.' ) . ' ' . $theme->errors()->get_error_message() );
  78  }
  79  
  80  $allowed_files = array();
  81  $style_files   = array();
  82  
  83  $file_types = wp_get_theme_file_editable_extensions( $theme );
  84  
  85  foreach ( $file_types as $type ) {
  86      switch ( $type ) {
  87          case 'php':
  88              $allowed_files += $theme->get_files( 'php', -1 );
  89              break;
  90          case 'css':
  91              $style_files                = $theme->get_files( 'css', -1 );
  92              $allowed_files['style.css'] = $style_files['style.css'];
  93              $allowed_files             += $style_files;
  94              break;
  95          default:
  96              $allowed_files += $theme->get_files( $type, -1 );
  97              break;
  98      }
  99  }
 100  
 101  // Move functions.php and style.css to the top.
 102  if ( isset( $allowed_files['functions.php'] ) ) {
 103      $allowed_files = array( 'functions.php' => $allowed_files['functions.php'] ) + $allowed_files;
 104  }
 105  if ( isset( $allowed_files['style.css'] ) ) {
 106      $allowed_files = array( 'style.css' => $allowed_files['style.css'] ) + $allowed_files;
 107  }
 108  
 109  if ( empty( $file ) ) {
 110      $relative_file = 'style.css';
 111      $file          = $allowed_files['style.css'];
 112  } else {
 113      $relative_file = wp_unslash( $file );
 114      $file          = $theme->get_stylesheet_directory() . '/' . $relative_file;
 115  }
 116  
 117  validate_file_to_edit( $file, $allowed_files );
 118  
 119  // Handle fallback editing of file when JavaScript is not available.
 120  $edit_error     = null;
 121  $posted_content = null;
 122  
 123  if ( 'POST' === $_SERVER['REQUEST_METHOD'] ) {
 124      $r = wp_edit_theme_plugin_file( wp_unslash( $_POST ) );
 125      if ( is_wp_error( $r ) ) {
 126          $edit_error = $r;
 127          if ( check_ajax_referer( 'edit-theme_' . $stylesheet . '_' . $relative_file, 'nonce', false ) && isset( $_POST['newcontent'] ) ) {
 128              $posted_content = wp_unslash( $_POST['newcontent'] );
 129          }
 130      } else {
 131          wp_redirect(
 132              add_query_arg(
 133                  array(
 134                      'a'     => 1, // This means "success" for some reason.
 135                      'theme' => $stylesheet,
 136                      'file'  => $relative_file,
 137                  ),
 138                  admin_url( 'theme-editor.php' )
 139              )
 140          );
 141          exit;
 142      }
 143  }
 144  
 145  $settings = array(
 146      'codeEditor' => wp_enqueue_code_editor( compact( 'file' ) ),
 147  );
 148  wp_enqueue_script( 'wp-theme-plugin-editor' );
 149  wp_add_inline_script( 'wp-theme-plugin-editor', sprintf( 'jQuery( function( $ ) { wp.themePluginEditor.init( $( "#template" ), %s ); } )', wp_json_encode( $settings ) ) );
 150  wp_add_inline_script( 'wp-theme-plugin-editor', 'wp.themePluginEditor.themeOrPlugin = "theme";' );
 151  
 152  require_once  ABSPATH . 'wp-admin/admin-header.php';
 153  
 154  update_recently_edited( $file );
 155  
 156  if ( ! is_file( $file ) ) {
 157      $error = true;
 158  }
 159  
 160  $content = '';
 161  if ( ! empty( $posted_content ) ) {
 162      $content = $posted_content;
 163  } elseif ( ! $error && filesize( $file ) > 0 ) {
 164      $f       = fopen( $file, 'r' );
 165      $content = fread( $f, filesize( $file ) );
 166  
 167      if ( str_ends_with( $file, '.php' ) ) {
 168          $functions = wp_doc_link_parse( $content );
 169  
 170          if ( ! empty( $functions ) ) {
 171              $docs_select  = '<select name="docs-list" id="docs-list">';
 172              $docs_select .= '<option value="">' . esc_html__( 'Function Name&hellip;' ) . '</option>';
 173  
 174              foreach ( $functions as $function ) {
 175                  $docs_select .= '<option value="' . esc_attr( $function ) . '">' . esc_html( $function ) . '()</option>';
 176              }
 177  
 178              $docs_select .= '</select>';
 179          }
 180      }
 181  
 182      $content = esc_textarea( $content );
 183  }
 184  
 185  $file_show = array_search( $file, array_filter( $allowed_files ), true );
 186  ?>
 187  <div class="wrap">
 188  <h1><?php echo esc_html( $title ); ?></h1>
 189  
 190  <?php
 191  if ( isset( $_GET['a'] ) ) {
 192      wp_admin_notice(
 193          __( 'File edited successfully.' ),
 194          array(
 195              'id'                 => 'message',
 196              'dismissible'        => true,
 197              'additional_classes' => array( 'updated' ),
 198          )
 199      );
 200  } elseif ( is_wp_error( $edit_error ) ) {
 201      $error_code = esc_html( $edit_error->get_error_message() ? $edit_error->get_error_message() : $edit_error->get_error_code() );
 202      $message    = '<p>' . __( 'There was an error while trying to update the file. You may need to fix something and try updating again.' ) . '</p>
 203      <pre>' . $error_code . '</pre>';
 204      wp_admin_notice(
 205          $message,
 206          array(
 207              'type' => 'error',
 208              'id'   => 'message',
 209          )
 210      );
 211  }
 212  
 213  if ( preg_match( '/\.css$/', $file ) && ! wp_is_block_theme() && current_user_can( 'customize' ) ) {
 214      $message = '<p><strong>' . __( 'Did you know?' ) . '</strong></p><p>' . sprintf(
 215          /* translators: %s: Link to Custom CSS section in the Customizer. */
 216          __( 'There is no need to change your CSS here &mdash; you can edit and live preview CSS changes in the <a href="%s">built-in CSS editor</a>.' ),
 217          esc_url( add_query_arg( 'autofocus[section]', 'custom_css', admin_url( 'customize.php' ) ) )
 218      ) . '</p>';
 219      wp_admin_notice(
 220          $message,
 221          array(
 222              'type' => 'info',
 223              'id'   => 'message',
 224          )
 225      );
 226  }
 227  ?>
 228  
 229  <div class="fileedit-sub">
 230  <div class="alignleft">
 231  <h2>
 232      <?php
 233      if ( wp_get_theme()->get( 'Name' ) === $theme->display( 'Name' ) ) {
 234          /* translators: %s: Theme name. */
 235          printf( __( 'Editing %s (active)' ), '<strong>' . $theme->display( 'Name' ) . '</strong>' );
 236      } else {
 237          /* translators: %s: Theme name. */
 238          printf( __( 'Editing %s (inactive)' ), '<strong>' . $theme->display( 'Name' ) . '</strong>' );
 239      }
 240      ?>
 241  </h2>
 242  <?php
 243  printf(
 244      /* translators: %s: File path. */
 245      ' <span><strong>' . __( 'File: %s' ) . '</strong></span>',
 246      esc_html( $file_show )
 247  );
 248  ?>
 249  </div>
 250  <div class="alignright">
 251      <form action="theme-editor.php" method="get">
 252          <label for="theme" id="theme-plugin-editor-selector"><?php _e( 'Select theme to edit:' ); ?> </label>
 253          <select name="theme" id="theme">
 254          <?php
 255          foreach ( wp_get_themes( array( 'errors' => null ) ) as $a_stylesheet => $a_theme ) {
 256              if ( $a_theme->errors() && 'theme_no_stylesheet' === $a_theme->errors()->get_error_code() ) {
 257                  continue;
 258              }
 259  
 260              $selected = ( $a_stylesheet === $stylesheet ) ? ' selected="selected"' : '';
 261              echo "\n\t" . '<option value="' . esc_attr( $a_stylesheet ) . '"' . $selected . '>' . $a_theme->display( 'Name' ) . '</option>';
 262          }
 263          ?>
 264          </select>
 265          <?php submit_button( __( 'Select' ), '', 'Submit', false ); ?>
 266      </form>
 267  </div>
 268  <br class="clear" />
 269  </div>
 270  
 271  <?php
 272  if ( $theme->errors() ) {
 273      wp_admin_notice(
 274          '<strong>' . __( 'This theme is broken.' ) . '</strong> ' . $theme->errors()->get_error_message(),
 275          array(
 276              'additional_classes' => array( 'error' ),
 277          )
 278      );
 279  }
 280  ?>
 281  
 282  <div id="templateside">
 283      <h2 id="theme-files-label"><?php _e( 'Theme Files' ); ?></h2>
 284      <ul role="tree" aria-labelledby="theme-files-label">
 285          <?php if ( $theme->parent() ) : ?>
 286              <li class="howto">
 287                  <?php
 288                  printf(
 289                      /* translators: %s: Link to edit parent theme. */
 290                      __( 'This child theme inherits templates from a parent theme, %s.' ),
 291                      sprintf(
 292                          '<a href="%s">%s</a>',
 293                          self_admin_url( 'theme-editor.php?theme=' . urlencode( $theme->get_template() ) ),
 294                          $theme->parent()->display( 'Name' )
 295                      )
 296                  );
 297                  ?>
 298              </li>
 299          <?php endif; ?>
 300          <li role="treeitem" tabindex="-1" aria-expanded="true" aria-level="1" aria-posinset="1" aria-setsize="1">
 301              <ul role="group">
 302                  <?php wp_print_theme_file_tree( wp_make_theme_file_tree( $allowed_files ) ); ?>
 303              </ul>
 304          </li>
 305      </ul>
 306  </div>
 307  
 308  <?php
 309  if ( $error ) :
 310      wp_admin_notice(
 311          __( 'File does not exist! Please double check the name and try again.' ),
 312          array(
 313              'additional_classes' => array( 'error' ),
 314          )
 315      );
 316  else :
 317      ?>
 318      <form name="template" id="template" action="theme-editor.php" method="post">
 319          <?php wp_nonce_field( 'edit-theme_' . $stylesheet . '_' . $relative_file, 'nonce' ); ?>
 320          <div>
 321              <label for="newcontent" id="theme-plugin-editor-label"><?php _e( 'Selected file content:' ); ?></label>
 322              <textarea cols="70" rows="30" name="newcontent" id="newcontent" aria-describedby="editor-keyboard-trap-help-1 editor-keyboard-trap-help-2 editor-keyboard-trap-help-3 editor-keyboard-trap-help-4"><?php echo $content; ?></textarea>
 323              <input type="hidden" name="action" value="update" />
 324              <input type="hidden" name="file" value="<?php echo esc_attr( $relative_file ); ?>" />
 325              <input type="hidden" name="theme" value="<?php echo esc_attr( $theme->get_stylesheet() ); ?>" />
 326          </div>
 327  
 328          <?php if ( ! empty( $functions ) ) : ?>
 329              <div id="documentation" class="hide-if-no-js">
 330                  <label for="docs-list"><?php _e( 'Documentation:' ); ?></label>
 331                  <?php echo $docs_select; ?>
 332                  <input disabled id="docs-lookup" type="button" class="button" value="<?php esc_attr_e( 'Look Up' ); ?>" onclick="if ( '' !== jQuery('#docs-list').val() ) { window.open( 'https://api.wordpress.org/core/handbook/1.0/?function=' + escape( jQuery( '#docs-list' ).val() ) + '&amp;locale=<?php echo urlencode( get_user_locale() ); ?>&amp;version=<?php echo urlencode( get_bloginfo( 'version' ) ); ?>&amp;redirect=true'); }" />
 333              </div>
 334          <?php endif; ?>
 335  
 336          <div>
 337              <div class="editor-notices">
 338                  <?php
 339                  if ( is_child_theme() && $theme->get_stylesheet() === get_template() ) :
 340                      $message  = ( is_writable( $file ) ) ? '<strong>' . __( 'Caution:' ) . '</strong> ' : '';
 341                      $message .= __( 'This is a file in your current parent theme.' );
 342                      wp_admin_notice(
 343                          $message,
 344                          array(
 345                              'type'               => 'warning',
 346                              'additional_classes' => array( 'inline' ),
 347                          )
 348                      );
 349                  endif;
 350                  ?>
 351              </div>
 352              <?php
 353              if ( is_writable( $file ) ) {
 354                  ?>
 355                  <p class="submit">
 356                      <?php submit_button( __( 'Update File' ), 'primary', 'submit', false ); ?>
 357                      <span class="spinner"></span>
 358                  </p>
 359                  <?php
 360              } else {
 361                  ?>
 362                  <p>
 363                      <?php
 364                      printf(
 365                          /* translators: %s: Documentation URL. */
 366                          __( 'You need to make this file writable before you can save your changes. See <a href="%s">Changing File Permissions</a> for more information.' ),
 367                          __( 'https://developer.wordpress.org/advanced-administration/server/file-permissions/' )
 368                      );
 369                      ?>
 370                  </p>
 371                  <?php
 372              }
 373              ?>
 374          </div>
 375  
 376          <?php wp_print_file_editor_templates(); ?>
 377      </form>
 378      <?php
 379  endif; // End if $error.
 380  ?>
 381  <br class="clear" />
 382  </div>
 383  <?php
 384  $dismissed_pointers = explode( ',', (string) get_user_meta( get_current_user_id(), 'dismissed_wp_pointers', true ) );
 385  if ( ! in_array( 'theme_editor_notice', $dismissed_pointers, true ) ) {
 386      // Get a back URL.
 387      $referer = wp_get_referer();
 388  
 389      $excluded_referer_basenames = array( 'theme-editor.php', 'wp-login.php' );
 390  
 391      $return_url = admin_url( '/' );
 392      if ( $referer ) {
 393          $referer_path = parse_url( $referer, PHP_URL_PATH );
 394          if ( is_string( $referer_path ) && ! in_array( basename( $referer_path ), $excluded_referer_basenames, true ) ) {
 395              $return_url = $referer;
 396          }
 397      }
 398      ?>
 399      <div id="file-editor-warning" class="notification-dialog-wrap file-editor-warning hide-if-no-js hidden">
 400          <div class="notification-dialog-background"></div>
 401          <div class="notification-dialog">
 402              <div class="file-editor-warning-content">
 403                  <div class="file-editor-warning-message">
 404                      <h1><?php _e( 'Heads up!' ); ?></h1>
 405                      <p>
 406                          <?php
 407                          _e( 'You appear to be making direct edits to your theme in the WordPress dashboard. It is not recommended! Editing your theme directly could break your site and your changes may be lost in future updates.' );
 408                          ?>
 409                      </p>
 410                          <?php
 411                          if ( ! $theme->parent() ) {
 412                              echo '<p>';
 413                              printf(
 414                                  /* translators: %s: Link to documentation on child themes. */
 415                                  __( 'If you need to tweak more than your theme&#8217;s CSS, you might want to try <a href="%s">making a child theme</a>.' ),
 416                                  esc_url( __( 'https://developer.wordpress.org/themes/advanced-topics/child-themes/' ) )
 417                              );
 418                              echo '</p>';
 419                          }
 420                          ?>
 421                      <p><?php _e( 'If you decide to go ahead with direct edits anyway, use a file manager to create a copy with a new name and hang on to the original. That way, you can re-enable a functional version if something goes wrong.' ); ?></p>
 422                  </div>
 423                  <p>
 424                      <a class="button file-editor-warning-go-back" href="<?php echo esc_url( $return_url ); ?>"><?php _e( 'Go back' ); ?></a>
 425                      <button type="button" class="file-editor-warning-dismiss button button-primary"><?php _e( 'I understand' ); ?></button>
 426                  </p>
 427              </div>
 428          </div>
 429      </div>
 430      <?php
 431  } // Editor warning notice.
 432  
 433  require_once  ABSPATH . 'wp-admin/admin-footer.php';


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