Allow the orders checker to check faction password.

parseorders.cpp

@@ -227,9 +227,12 @@ void Game::ParseOrders(int faction, istream& f, OrdersCheck *pCheck)
 					fac = 0;
 					break;
 				}
+				Faction *passFac = nullptr;
 				if (pCheck) {
 					fac = &(pCheck->dummyFaction);
 					pCheck->numshows = 0;
+					// Even though we don't use the real faction for other things, we do want it for the password check.
+					passFac = GetFaction(&factions, token->value());
 				} else {
 					fac = GetFaction(&factions, token->value());
 				}
@@ -243,6 +246,18 @@ void Game::ParseOrders(int faction, istream& f, OrdersCheck *pCheck)
 					if (!token) {
 						parse_error(pCheck, 0, fac, "Warning: No password on #atlantis line.");
 						parse_error(pCheck, 0, fac, "If this is your first turn, ignore this error.");
+					} else {
+						// If we found their real faction above (we should have but let's not assume), then we
+						// can check if they gave us the correct password.
+						if (passFac) {
+							bool has_password = !(*(passFac->password) == "none");
+							bool wrong_password = !(*(passFac->password) == *token);
+							if (has_password && wrong_password) {
+								parse_error(pCheck, 0, fac, "Incorrect password on #atlantis line.");
+								fac = 0;
+								break;
+							}
+						}
 					}
 				} else {
 					if (!(*(fac->password) == "none")) {