true ) ); } function wpcf7_file_form_tag_handler( $tag ) { if ( empty( $tag->name ) ) { return ''; } $validation_error = wpcf7_get_validation_error( $tag->name ); $class = wpcf7_form_controls_class( $tag->type ); if ( $validation_error ) { $class .= ' wpcf7-not-valid'; } $atts = array(); $atts['size'] = $tag->get_size_option( '40' ); $atts['class'] = $tag->get_class_option( $class ); $atts['id'] = $tag->get_id_option(); $atts['tabindex'] = $tag->get_option( 'tabindex', 'int', true ); if ( $tag->is_required() ) { $atts['aria-required'] = 'true'; } $atts['aria-invalid'] = $validation_error ? 'true' : 'false'; $atts['type'] = 'file'; $atts['name'] = $tag->name; $atts = wpcf7_format_atts( $atts ); $html = sprintf( '%3$s', sanitize_html_class( $tag->name ), $atts, $validation_error ); return $html; } /* Encode type filter */ add_filter( 'wpcf7_form_enctype', 'wpcf7_file_form_enctype_filter' ); function wpcf7_file_form_enctype_filter( $enctype ) { $multipart = (bool) wpcf7_scan_form_tags( array( 'type' => array( 'file', 'file*' ) ) ); if ( $multipart ) { $enctype = 'multipart/form-data'; } return $enctype; } /* Validation + upload handling filter */ add_filter( 'wpcf7_validate_file', 'wpcf7_file_validation_filter', 10, 2 ); add_filter( 'wpcf7_validate_file*', 'wpcf7_file_validation_filter', 10, 2 ); function wpcf7_file_validation_filter( $result, $tag ) { $name = $tag->name; $id = $tag->get_id_option(); $file = isset( $_FILES[$name] ) ? $_FILES[$name] : null; if ( $file['error'] && UPLOAD_ERR_NO_FILE != $file['error'] ) { $result->invalidate( $tag, wpcf7_get_message( 'upload_failed_php_error' ) ); return $result; } if ( empty( $file['tmp_name'] ) && $tag->is_required() ) { $result->invalidate( $tag, wpcf7_get_message( 'invalid_required' ) ); return $result; } if ( ! is_uploaded_file( $file['tmp_name'] ) ) { return $result; } $allowed_file_types = array(); if ( $file_types_a = $tag->get_option( 'filetypes' ) ) { foreach ( $file_types_a as $file_types ) { $file_types = explode( '|', $file_types ); foreach ( $file_types as $file_type ) { $file_type = trim( $file_type, '.' ); $file_type = str_replace( array( '.', '+', '*', '?' ), array( '\.', '\+', '\*', '\?' ), $file_type ); $allowed_file_types[] = $file_type; } } } $allowed_file_types = array_unique( $allowed_file_types ); $file_type_pattern = implode( '|', $allowed_file_types ); $allowed_size = 1048576; // default size 1 MB if ( $file_size_a = $tag->get_option( 'limit' ) ) { $limit_pattern = '/^([1-9][0-9]*)([kKmM]?[bB])?$/'; foreach ( $file_size_a as $file_size ) { if ( preg_match( $limit_pattern, $file_size, $matches ) ) { $allowed_size = (int) $matches[1]; if ( ! empty( $matches[2] ) ) { $kbmb = strtolower( $matches[2] ); if ( 'kb' == $kbmb ) { $allowed_size *= 1024; } elseif ( 'mb' == $kbmb ) { $allowed_size *= 1024 * 1024; } } break; } } } /* File type validation */ // Default file-type restriction if ( '' == $file_type_pattern ) { $file_type_pattern = 'jpg|jpeg|png|gif|pdf|doc|docx|ppt|pptx|odt|avi|ogg|m4a|mov|mp3|mp4|mpg|wav|wmv'; } $file_type_pattern = trim( $file_type_pattern, '|' ); $file_type_pattern = '(' . $file_type_pattern . ')'; $file_type_pattern = '/\.' . $file_type_pattern . '$/i'; if ( ! preg_match( $file_type_pattern, $file['name'] ) ) { $result->invalidate( $tag, wpcf7_get_message( 'upload_file_type_invalid' ) ); return $result; } /* File size validation */ if ( $file['size'] > $allowed_size ) { $result->invalidate( $tag, wpcf7_get_message( 'upload_file_too_large' ) ); return $result; } wpcf7_init_uploads(); // Confirm upload dir $uploads_dir = wpcf7_upload_tmp_dir(); $uploads_dir = wpcf7_maybe_add_random_dir( $uploads_dir ); $filename = $file['name']; $filename = wpcf7_canonicalize( $filename, 'as-is' ); $filename = sanitize_file_name( $filename ); $filename = wpcf7_antiscript_file_name( $filename ); $filename = wp_unique_filename( $uploads_dir, $filename ); $new_file = trailingslashit( $uploads_dir ) . $filename; if ( false === @move_uploaded_file( $file['tmp_name'], $new_file ) ) { $result->invalidate( $tag, wpcf7_get_message( 'upload_failed' ) ); return $result; } // Make sure the uploaded file is only readable for the owner process @chmod( $new_file, 0400 ); if ( $submission = WPCF7_Submission::get_instance() ) { $submission->add_uploaded_file( $name, $new_file ); } return $result; } /* Messages */ add_filter( 'wpcf7_messages', 'wpcf7_file_messages' ); function wpcf7_file_messages( $messages ) { return array_merge( $messages, array( 'upload_failed' => array( 'description' => __( "Uploading a file fails for any reason", 'contact-form-7' ), 'default' => __( "There was an unknown error uploading the file.", 'contact-form-7' ) ), 'upload_file_type_invalid' => array( 'description' => __( "Uploaded file is not allowed for file type", 'contact-form-7' ), 'default' => __( "You are not allowed to upload files of this type.", 'contact-form-7' ) ), 'upload_file_too_large' => array( 'description' => __( "Uploaded file is too large", 'contact-form-7' ), 'default' => __( "The file is too big.", 'contact-form-7' ) ), 'upload_failed_php_error' => array( 'description' => __( "Uploading a file fails for PHP error", 'contact-form-7' ), 'default' => __( "There was an error uploading the file.", 'contact-form-7' ) ) ) ); } /* Tag generator */ add_action( 'wpcf7_admin_init', 'wpcf7_add_tag_generator_file', 50 ); function wpcf7_add_tag_generator_file() { $tag_generator = WPCF7_TagGenerator::get_instance(); $tag_generator->add( 'file', __( 'file', 'contact-form-7' ), 'wpcf7_tag_generator_file' ); } function wpcf7_tag_generator_file( $contact_form, $args = '' ) { $args = wp_parse_args( $args, array() ); $type = 'file'; $description = __( "Generate a form-tag for a file uploading field. For more details, see %s.", 'contact-form-7' ); $desc_link = wpcf7_link( __( 'https://contactform7.com/file-uploading-and-attachment/', 'contact-form-7' ), __( 'File Uploading and Attachment', 'contact-form-7' ) ); ?>

' ); ?>

scan_form_tags( array( 'type' => array( 'file', 'file*' ) ) ); if ( ! $has_tags ) { return; } $uploads_dir = wpcf7_upload_tmp_dir(); wpcf7_init_uploads(); if ( ! is_dir( $uploads_dir ) || ! wp_is_writable( $uploads_dir ) ) { $message = sprintf( __( 'This contact form contains file uploading fields, but the temporary folder for the files (%s) does not exist or is not writable. You can create the folder or change its permission manually.', 'contact-form-7' ), $uploads_dir ); echo '

' . esc_html( $message ) . '

'; } } /* File uploading functions */ function wpcf7_init_uploads() { $dir = wpcf7_upload_tmp_dir(); wp_mkdir_p( $dir ); $htaccess_file = trailingslashit( $dir ) . '.htaccess'; if ( file_exists( $htaccess_file ) ) { return; } if ( $handle = @fopen( $htaccess_file, 'w' ) ) { fwrite( $handle, "Deny from all\n" ); fclose( $handle ); } } function wpcf7_maybe_add_random_dir( $dir ) { do { $rand_max = mt_getrandmax(); $rand = zeroise( mt_rand( 0, $rand_max ), strlen( $rand_max ) ); $dir_new = path_join( $dir, $rand ); } while ( file_exists( $dir_new ) ); if ( wp_mkdir_p( $dir_new ) ) { return $dir_new; } return $dir; } function wpcf7_upload_tmp_dir() { if ( defined( 'WPCF7_UPLOADS_TMP_DIR' ) ) return WPCF7_UPLOADS_TMP_DIR; else return wpcf7_upload_dir( 'dir' ) . '/wpcf7_uploads'; } add_action( 'template_redirect', 'wpcf7_cleanup_upload_files', 20 ); function wpcf7_cleanup_upload_files( $seconds = 60, $max = 100 ) { if ( is_admin() || 'GET' != $_SERVER['REQUEST_METHOD'] || is_robots() || is_feed() || is_trackback() ) { return; } $dir = trailingslashit( wpcf7_upload_tmp_dir() ); if ( ! is_dir( $dir ) || ! is_readable( $dir ) || ! wp_is_writable( $dir ) ) { return; } $seconds = absint( $seconds ); $max = absint( $max ); $count = 0; if ( $handle = @opendir( $dir ) ) { while ( false !== ( $file = readdir( $handle ) ) ) { if ( $file == "." || $file == ".." || $file == ".htaccess" ) { continue; } $mtime = @filemtime( $dir . $file ); if ( $mtime && time() < $mtime + $seconds ) { // less than $seconds old continue; } wpcf7_rmdir_p( path_join( $dir, $file ) ); $count += 1; if ( $max <= $count ) { break; } } closedir( $handle ); } }