Use -connect-trusted from next Daemon release

The next version of Daemon will have the -connect-trusted option for
connecting to a server. If that is available, use it (and begin to
respect the custom command line).

main.cpp

@@ -96,8 +96,8 @@ QString getURLFromPositionalOptions(const QCommandLineParser& parser)
         url.remove(passwordEnd, 1);
     }
 
-    // When connect URL + custom command are supported together, we have to consider the pessimistic case
-    // of a custom command line like   bash -c "%command%"
+    // If a custom command is used, we have to consider the pessimistic case
+    // of a command line like   bash -c "%command%"
     // so metacharacters from any common shells must be forbidden.
     // What we need to accept are domain names and IP addresses.
     // Also throw in '@' for limited support of the password feature (unv://[email protected])

qmldownloader.cpp

@@ -185,18 +185,31 @@ void QmlDownloader::startGame()
     StartGame(settings_, connectUrl_, false);
 }
 
+// Does our version of daemon have -connect-trusted?
+static bool haveConnectTrusted(const QString& gameVersion)
+{
+    // Updater version up to v0.2.0 may set "unknown" as game version if versions.json request fails
+    if (gameVersion == "unknown")
+        return false;
+    // Hacky string comparision, assume we won't go down to 0.9 or up to 0.100 :)
+    return gameVersion > "0.54.1";
+}
+
 void StartGame(const Settings& settings, const QString& connectUrl, bool failIfWindowsAdmin)
 {
     QString gameCommand = Sys::getGameCommand(settings.installPath());
     QString commandLine;
-    if (!connectUrl.isEmpty()) {
+    if (!connectUrl.isEmpty() && !haveConnectTrusted(settings.currentVersion())) {
         // Behave for now as the old protocol handler which ignores the custom command
         commandLine = gameCommand + " -connect " + connectUrl;
     } else {
         commandLine = settings.commandLine().trimmed();
         if (!commandLine.contains(COMMAND_REGEX)) {
             commandLine = "%command% " + commandLine;
         }
+        if (!connectUrl.isEmpty()) {
+            gameCommand = gameCommand + " -connect-trusted " + connectUrl;
+        }
         commandLine.replace(COMMAND_REGEX, gameCommand);
     }
     qDebug() << "Starting game with command line:" << commandLine;