From 2e9021c2e73786e9045c0634c43efa86f18ac8de Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <richard@matrix.org>
Date: Sun, 4 Sep 2016 23:34:24 +0100
Subject: [PATCH] OlmSession.has_received_message

I find myself wanting to know if an OlmSession is in the pre-key state or not,
to help debugging at the application level.
---
 include/olm/olm.h      | 4 ++++
 javascript/olm_post.js | 7 +++++++
 src/olm.cpp            | 6 ++++++
 3 files changed, 17 insertions(+)

diff --git a/include/olm/olm.h b/include/olm/olm.h
index 0886fa9..81b6602 100644
--- a/include/olm/olm.h
+++ b/include/olm/olm.h
@@ -300,6 +300,10 @@ size_t olm_session_id(
     void * id, size_t id_length
 );
 
+int olm_session_has_received_message(
+    OlmSession *session
+);
+
 /** Checks if the PRE_KEY message is for this in-bound session. This can happen
  * if multiple messages are sent to this account before this account sends a
  * message in reply. Returns olm_error() on failure. If the base64
diff --git a/javascript/olm_post.js b/javascript/olm_post.js
index 955d68d..6c99030 100644
--- a/javascript/olm_post.js
+++ b/javascript/olm_post.js
@@ -263,6 +263,13 @@ Session.prototype['session_id'] = restore_stack(function() {
     return Pointer_stringify(id_buffer);
 });
 
+Session.prototype['has_received_message'] = function() {
+    return session_method(Module['_olm_session_has_received_message'])(
+        this.ptr
+    ) ? true : false;
+};
+
+
 Session.prototype['matches_inbound'] = restore_stack(function(
     one_time_key_message
 ) {
diff --git a/src/olm.cpp b/src/olm.cpp
index 682a84c..7f68ad0 100644
--- a/src/olm.cpp
+++ b/src/olm.cpp
@@ -529,6 +529,12 @@ size_t olm_session_id(
 }
 
 
+int olm_session_has_received_message(
+    OlmSession * session
+) {
+    return from_c(session)->received_message;
+}
+
 size_t olm_matches_inbound_session(
     OlmSession * session,
     void * one_time_key_message, size_t message_length