Fix: use fileperms() instead of stat() and fix escaping (#1023)

* fix: use fileperms() instead of stat() and fix escaping

* fix: address PHPCS escaping and placeholder errors

* fix: put PHP tags on their own lines per PHPCS

---------

Co-authored-by: Saša Todorović <15647032+stodorovic@users.noreply.github.com>

Author: kraftbj

wp-cache.php

@@ -618,8 +618,7 @@ function wp_cache_manager_error_checks() {
 		$dismiss_readable_warning = 0;
 	}
 	if( $dismiss_readable_warning == 0 && is_writeable_ACLSafe( WP_CONTENT_DIR . '/' ) ) {
-		$wp_content_stat = stat(WP_CONTENT_DIR . '/');
-		$wp_content_mode = decoct( $wp_content_stat[ 'mode' ] & 0777 );
+		$wp_content_mode = decoct( fileperms( WP_CONTENT_DIR . '/' ) & 0777 );
 		if( substr( $wp_content_mode, -2 ) == '77' ) {
 			?><div class="notice notice-warning"><h4><?php printf( __( 'Warning! %s is writeable!', 'wp-super-cache' ), WP_CONTENT_DIR ); ?></h4>
 			<p><?php printf( __( 'You should change the permissions on %s and make it more restrictive. Use your ftp client, or the following command to fix things:', 'wp-super-cache' ), WP_CONTENT_DIR ); ?> <code>chmod 755 <?php echo WP_CONTENT_DIR; ?>/</code></p>
@@ -669,13 +668,23 @@ function wp_cache_manager_error_checks() {
 			)
 		) {
 			?>
-			<div class="notice notice-warning"><h4><?php _e( 'Rewrite rules must be updated', 'wp-super-cache' ); ?></h4>
-			<p><?php _e( 'The rewrite rules required by this plugin have changed or are missing. ', 'wp-super-cache' ); ?>
-			<?php _e( 'Mobile support requires extra rules in your .htaccess file, or you can set the plugin to simple mode. Here are your options (in order of difficulty):', 'wp-super-cache' ); ?>
-			<ol><li> <?php _e( 'Set the plugin to simple mode and enable mobile support.', 'wp-super-cache' ); ?></li>
+			<div class="notice notice-warning"><h4><?php esc_html_e( 'Rewrite rules must be updated', 'wp-super-cache' ); ?></h4>
+			<p><?php esc_html_e( 'The rewrite rules required by this plugin have changed or are missing. ', 'wp-super-cache' ); ?>
+			<?php esc_html_e( 'Mobile support requires extra rules in your .htaccess file, or you can set the plugin to simple mode. Here are your options (in order of difficulty):', 'wp-super-cache' ); ?></p>
+			<ol><li> <?php esc_html_e( 'Set the plugin to simple mode and enable mobile support.', 'wp-super-cache' ); ?></li>
 			<li> <?php _e( 'Scroll down the Advanced Settings page and click the <strong>Update Mod_Rewrite Rules</strong> button.', 'wp-super-cache' ); ?></li>
-			<li> <?php printf( __( 'Delete the plugin mod_rewrite rules in %s.htaccess enclosed by <code># BEGIN WPSuperCache</code> and <code># END WPSuperCache</code> and let the plugin regenerate them by reloading this page.', 'wp-super-cache' ), $home_path ); ?></li>
-			<li> <?php printf( __( 'Add the rules yourself. Edit %s.htaccess and find the block of code enclosed by the lines <code># BEGIN WPSuperCache</code> and <code># END WPSuperCache</code>. There are two sections that look very similar. Just below the line <code>%%{HTTP:Cookie} !^.*(comment_author_|%s|wp-postpass_).*$</code> add these lines: (do it twice, once for each section)', 'wp-super-cache' ), $home_path, wpsc_get_logged_in_cookie() ); ?></p>
+			<li>
+			<?php
+			// translators: %s is the path to the .htaccess file.
+			printf( wp_kses( __( 'Delete the plugin mod_rewrite rules in %s.htaccess enclosed by <code># BEGIN WPSuperCache</code> and <code># END WPSuperCache</code> and let the plugin regenerate them by reloading this page.', 'wp-super-cache' ), array( 'code' => array() ) ), esc_html( $home_path ) );
+			?>
+			</li>
+			<li>
+			<?php
+			// translators: %1$s is the path to the .htaccess file, %2$s is the logged-in cookie name.
+			printf( wp_kses( __( 'Add the rules yourself. Edit %1$s.htaccess and find the block of code enclosed by the lines <code># BEGIN WPSuperCache</code> and <code># END WPSuperCache</code>. There are two sections that look very similar. Just below the line <code>%%{HTTP:Cookie} !^.*(comment_author_|%2$s|wp-postpass_).*$</code> add these lines: (do it twice, once for each section)', 'wp-super-cache' ), array( 'code' => array() ) ), esc_html( $home_path ), esc_html( wpsc_get_logged_in_cookie() ) );
+			?>
+			</p>
 			<div style='padding: 2px; margin: 2px; border: 1px solid #333; width:400px; overflow: scroll'><pre><?php echo "RewriteCond %{HTTP_user_agent} !^.*(" . addcslashes( str_replace( ', ', '|', $wp_cache_mobile_browsers ), ' ' ) . ").*\nRewriteCond %{HTTP_user_agent} !^(" . addcslashes( str_replace( ', ', '|', $wp_cache_mobile_prefixes ), ' ' ) . ").*"; ?></pre></div></li></ol></div><?php
 		}