From 89394fe908bd2f8c17a4b3c0d31905f0831268e5 Mon Sep 17 00:00:00 2001 From: Joe McGill Date: Tue, 21 Jun 2016 14:55:52 +0000 Subject: [PATCH] Media: Improve handling of extensionless filenames. Merge of [37756] to the 4.3 branch. See #37111. Built from https://develop.svn.wordpress.org/branches/4.3@37814 git-svn-id: http://core.svn.wordpress.org/branches/4.3@37779 1a063a9b-81f0-0310-95a4-ce76da25c4cd --- wp-includes/formatting.php | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php index 640e136fcf..8decd6e9b6 100644 --- a/wp-includes/formatting.php +++ b/wp-includes/formatting.php @@ -1298,7 +1298,8 @@ function remove_accents( $string ) { * operating systems and special characters requiring special escaping * to manipulate at the command line. Replaces spaces and consecutive * dashes with a single dash. Trims period, dash and underscore from beginning - * and end of filename. + * and end of filename. It is not guaranteed that this function will return a + * filename that is allowed to be uploaded. * * @since 2.1.0 * @@ -1323,6 +1324,14 @@ function sanitize_file_name( $filename ) { $filename = preg_replace( '/[\r\n\t -]+/', '-', $filename ); $filename = trim( $filename, '.-_' ); + if ( false === strpos( $filename, '.' ) ) { + $mime_types = wp_get_mime_types(); + $filetype = wp_check_filetype( 'test.' . $filename, $mime_types ); + if ( $filetype['ext'] === $filename ) { + $filename = 'unnamed-file.' . $filetype['ext']; + } + } + // Split the filename into a base and extension[s] $parts = explode('.', $filename);