Handle onLogOff in steampurple

steampurple.cpp

@@ -210,13 +210,28 @@ static void steam_login(PurpleAccount* account) {
 			purple_connection_error_reason(pc, PURPLE_CONNECTION_ERROR_NETWORK_ERROR, "This server is down");
 			break;
 		default:
-			purple_debug_error("steam", "Unknown eresult: %i\n", result);
+			purple_debug_error("steam", "Unknown logon eresult: %i\n", result);
 			purple_connection_error_reason(pc, PURPLE_CONNECTION_ERROR_OTHER_ERROR, "Unknown error");
 		}
 
 		g_free(steamID_string);
 	};
 
+	steam->client.onLogOff = [pc](EResult result) {
+		switch (result) {
+		case EResult::LoggedInElsewhere:
+		case EResult::LogonSessionReplaced:
+			purple_connection_error_reason(pc, PURPLE_CONNECTION_ERROR_OTHER_ERROR, "Logged in elsewhere");
+			break;
+		case EResult::ServiceUnavailable:
+			purple_connection_error_reason(pc, PURPLE_CONNECTION_ERROR_NETWORK_ERROR, "Steam went down");
+			break;
+		default:
+			purple_debug_error("steam", "Unknown logoff eresult: %i\n", result);
+			purple_connection_error_reason(pc, PURPLE_CONNECTION_ERROR_OTHER_ERROR, "Unknown error");
+		}
+	};
+
 	steam->client.onSentry = [account](const unsigned char hash[20]) {
 		auto base64 = purple_base64_encode(hash, 20);
 		purple_account_set_string(account, "sentry_hash", base64);