sid: sid_test: add conformance mode imitating MS API

Add a conformance handler “Con_MS” to achieve a behavior that
mimicks that of MS’s implementation bug-for-bug.

Aspects of reading and formatting governd by the conformance:

    - Validation of ident auths,
    - validation of subauths,
    - validation of leading zeros in decimal numbers,
    - zero-padding of hex numbers.

1 files changed, 11 insertions, 0 deletions

diff --git a/sid.mli b/sid.mli
index e2c94df..a21c5ec 100644
--- a/sid.mli
+++ b/sid.mli
@@ -46,6 +46,17 @@ module StringFmt :
     (** [encode s] convert SID [s] to its string representation. *)
   end
 
+(** Conversions to and from the {e string format syntax} with permissive
+    input validation. *)
+module MSStringFmt :
+  sig
+    val decode : string -> (t, string) result
+    (** [decode b] parse string buffer [b] into a SID. *)
+
+    val encode : t -> string
+    (** [encode s] convert SID [s] to its string representation. *)
+  end
+
 (** Conversion to and from the {e packet representation} (MS-DTYP 2.4.2.2). *)
 module PacketRep :
   sig