support stale=FALSE in authentication header

headerauth.go

@@ -20,19 +20,21 @@ func ReadHeaderAuth(in string) (*HeaderAuth, error) {
 
 	i := strings.IndexByte(in, ' ')
 	if i < 0 {
-		return nil, fmt.Errorf("parse error")
+		return nil, fmt.Errorf("unable to find prefix (%s)", in)
 	}
 	a.Prefix, in = in[:i], in[i+1:]
 
-	r := regexp.MustCompile("^([a-z]+)=\"(.+?)\"(, )?")
+	r := regexp.MustCompile("^([a-z]+)=(\"(.+?)\"|([a-zA-Z0-9]+))(, )?")
 
 	for len(in) > 0 {
 		m := r.FindStringSubmatch(in)
 		if m == nil {
-			return nil, fmt.Errorf("parse error")
+			return nil, fmt.Errorf("unable to parse key-value (%s)", in)
 		}
 		in = in[len(m[0]):]
 
+		m[2] = strings.TrimPrefix(m[2], "\"")
+		m[2] = strings.TrimSuffix(m[2], "\"")
 		a.Values[m[1]] = m[2]
 	}