1 files changed, 13 insertions, 2 deletions
diff --git a/javascript/olm_inbound_group_session.js b/javascript/olm_inbound_group_session.js
index 9722c31..6058233 100644
--- a/javascript/olm_inbound_group_session.js
+++ b/javascript/olm_inbound_group_session.js
@@ -52,12 +52,12 @@ InboundGroupSession.prototype['unpickle'] = restore_stack(function(key, pickle)
     );
 });
 
-InboundGroupSession.prototype['create'] = restore_stack(function(message_index, session_key) {
+InboundGroupSession.prototype['create'] = restore_stack(function(session_key) {
     var key_array = array_from_string(session_key);
     var key_buffer = stack(key_array);
 
     inbound_group_session_method(Module['_olm_init_inbound_group_session'])(
-        this.ptr, message_index, key_buffer, key_array.length
+        this.ptr, key_buffer, key_array.length
     );
 });
 
@@ -89,4 +89,15 @@ InboundGroupSession.prototype['decrypt'] = restore_stack(function(
     return Pointer_stringify(plaintext_buffer);
 });
 
+InboundGroupSession.prototype['session_id'] = restore_stack(function() {
+    var length = inbound_group_session_method(
+        Module['_olm_inbound_group_session_id_length']
+    )(this.ptr);
+    var session_id = stack(length + NULL_BYTE_PADDING_LENGTH);
+    inbound_group_session_method(Module['_olm_inbound_group_session_id'])(
+        this.ptr, session_id, length
+    );
+    return Pointer_stringify(session_id);
+});
+
 olm_exports['InboundGroupSession'] = InboundGroupSession;