Weak hands cannot be planted, meager skills have no foundation. Shallow wisdom is futile, how can one hope for a good name?扰扰从役倦，屑屑身事微。少壮轻年月，迟暮惜光辉。
archived || '1' === $current_blog->spam || '1' === $current_blog->deleted ) {
status_header( 404 );
die( '404 — File not found.' );
}
if ( ! defined( 'BLOGUPLOADDIR' ) ) {
status_header( 500 );
die( '500 — Directory not configured.' );
}
$file = rtrim( BLOGUPLOADDIR, '/' ) . '/' . str_replace( '..', '', $_GET['file'] );
if ( ! is_file( $file ) ) {
status_header( 404 );
die( '404 — File not found.' );
}
$mime = wp_check_filetype( $file );
if ( false === $mime['type'] && function_exists( 'mime_content_type' ) ) {
$mime['type'] = mime_content_type( $file );
}
if ( $mime['type'] ) {
$mimetype = $mime['type'];
} else {
$mimetype = 'image/' . substr( $file, strrpos( $file, '.' ) + 1 );
}
header( 'Content-Type: ' . $mimetype ); // Always send this.
if ( ! str_contains( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS' ) ) {
header( 'Content-Length: ' . filesize( $file ) );
}
// Optional support for X-Sendfile and X-Accel-Redirect.
if ( WPMU_ACCEL_REDIRECT ) {
header( 'X-Accel-Redirect: ' . str_replace( WP_CONTENT_DIR, '', $file ) );
exit;
} elseif ( WPMU_SENDFILE ) {
header( 'X-Sendfile: ' . $file );
exit;
}
$wp_last_modified = gmdate( 'D, d M Y H:i:s', filemtime( $file ) );
$wp_etag = '"' . md5( $wp_last_modified ) . '"';
header( "Last-Modified: $wp_last_modified GMT" );
header( 'ETag: ' . $wp_etag );
header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + 100000000 ) . ' GMT' );
// Support for conditional GET - use stripslashes() to avoid formatting.php dependency.
if ( isset( $_SERVER['HTTP_IF_NONE_MATCH'] ) ) {
$client_etag = stripslashes( $_SERVER['HTTP_IF_NONE_MATCH'] );
} else {
$client_etag = '';
}
if ( isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
$client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE'] );
} else {
$client_last_modified = '';
}
// If string is empty, return 0. If not, att