ircd::m: Implement matrix-org/matrix-spec-proposals#3316 timestamp ma…

…ssaging.

include/ircd/m/vm/opts.h

@@ -214,6 +214,9 @@ struct ircd::m::vm::copts
 	/// A matrix-spec opaque token from a client identifying this eval.
 	string_view client_txnid;
 
+	/// MSC3316 appservice timestamp massage; passed to `origin_server_ts`.
+	milliseconds ts {milliseconds::min()};
+
 	/// This bitmask covers all of the top-level properties of m::event
 	/// which will be generated internally during injection unless they
 	/// already exist. Clearing any of these bits will prevent the internal

matrix/vm_inject.cc

@@ -319,9 +319,14 @@ ircd::m::vm::inject(eval &eval,
 	{
 		event, opts.prop_mask.has("origin_server_ts"),
 		{
-			"origin_server_ts", []
+			"origin_server_ts", [&opts]
 			{
-				return json::value{ircd::time<milliseconds>()};
+				return json::value
+				{
+					opts.ts == milliseconds::min()?
+						ircd::time<milliseconds>():
+						opts.ts.count()
+				};
 			}
 		}
 	};

modules/client/rooms/send.cc

@@ -135,8 +135,16 @@ put__send(client &client,
 			content_max,
 		};
 
-	m::vm::copts copts;
-	copts.client_txnid = transaction_id;
+	const m::vm::copts copts
+	{
+		.client_txnid = transaction_id,
+
+		// Bridges are authorized to set their own time.
+		.ts = request.bridge_id?
+			request.query.get("ts", milliseconds::min()):
+			milliseconds::min(),
+	};
+
 	const room room
 	{
 		room_id, &copts

modules/client/rooms/state.cc

@@ -53,9 +53,22 @@ put__state(client &client,
 		request.content
 	};
 
+	const m::vm::copts copts
+	{
+		// Bridges are authorized to set their own time.
+		.ts = request.bridge_id?
+			request.query.get("ts", milliseconds::min()):
+			milliseconds::min(),
+	};
+
+	const m::room room
+	{
+		room_id, &copts
+	};
+
 	const auto event_id
 	{
-		m::send(room_id, request.user_id, type, state_key, content)
+		m::send(room, request.user_id, type, state_key, content)
 	};
 
 	return m::resource::response