Merge pull request #42 from matrix-org/rav/megolm_export

Export and import of megolm session data

1 files changed, 26 insertions, 0 deletions

diff --git a/javascript/olm_inbound_group_session.js b/javascript/olm_inbound_group_session.js
index 2e4727f..6bc745d 100644
--- a/javascript/olm_inbound_group_session.js
+++ b/javascript/olm_inbound_group_session.js
@@ -61,6 +61,15 @@ InboundGroupSession.prototype['create'] = restore_stack(function(session_key) {
     );
 });
 
+InboundGroupSession.prototype['import_session'] = 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_import_inbound_group_session'])(
+        this.ptr, key_buffer, key_array.length
+    );
+});
+
 InboundGroupSession.prototype['decrypt'] = restore_stack(function(
     message
 ) {
@@ -123,4 +132,21 @@ InboundGroupSession.prototype['session_id'] = restore_stack(function() {
     return Pointer_stringify(session_id);
 });
 
+InboundGroupSession.prototype['first_known_index'] = restore_stack(function() {
+    return inbound_group_session_method(
+        Module['_olm_inbound_group_session_first_known_index']
+    )(this.ptr);
+});
+
+InboundGroupSession.prototype['export_session'] = restore_stack(function(message_index) {
+    var key_length = inbound_group_session_method(
+        Module['_olm_export_inbound_group_session_length']
+    )(this.ptr);
+    var key = stack(key_length + NULL_BYTE_PADDING_LENGTH);
+    outbound_group_session_method(Module['_olm_export_inbound_group_session'])(
+        this.ptr, key, key_length, message_index
+    );
+    return Pointer_stringify(key);
+});
+
 olm_exports['InboundGroupSession'] = InboundGroupSession;