GH-1524 Regenerate Minecraft client token when the auth token is invalid

This makes the case where users copy MultiMC to other machines
easier to handle. It doesn't require manual intervention and the tokens
do not go in a desync loop.

1 files changed, 6 insertions, 0 deletions

diff --git a/api/logic/minecraft/auth/MojangAccount.cpp b/api/logic/minecraft/auth/MojangAccount.cpp
index 2b073aac..e6247608 100644
--- a/api/logic/minecraft/auth/MojangAccount.cpp
+++ b/api/logic/minecraft/auth/MojangAccount.cpp
@@ -298,3 +298,9 @@ void MojangAccount::incrementUses()
 		qWarning() << "Account" << m_username << "is now in use.";
 	}
 }
+
+void MojangAccount::invalidateClientToken()
+{
+	m_clientToken = QUuid::createUuid().toString().remove(QRegExp("[{}-]"));
+	emit changed();
+}