From 1fbb41f5e2c4426b1b1e469c78cfbc7e1c4d7999 Mon Sep 17 00:00:00 2001 From: Josiah Glosson Date: Mon, 17 Jul 2023 17:07:06 -0500 Subject: Make Launch Offline not launch online in 1.6+ Signed-off-by: Josiah Glosson --- launcher/minecraft/auth/AuthSession.cpp | 1 + 1 file changed, 1 insertion(+) (limited to 'launcher/minecraft/auth') diff --git a/launcher/minecraft/auth/AuthSession.cpp b/launcher/minecraft/auth/AuthSession.cpp index 6bea74a3..2c06beaa 100644 --- a/launcher/minecraft/auth/AuthSession.cpp +++ b/launcher/minecraft/auth/AuthSession.cpp @@ -26,6 +26,7 @@ bool AuthSession::MakeOffline(QString offline_playername) return false; } session = "-"; + access_token = "0"; player_name = offline_playername; status = PlayableOffline; return true; -- cgit From f8fcb98c6837c0bf66c2175ea98198449c36b165 Mon Sep 17 00:00:00 2001 From: Sefa Eyeoglu Date: Tue, 18 Jul 2023 09:06:49 +0200 Subject: fix: generate predictable UUIDs for offline accounts Signed-off-by: Sefa Eyeoglu --- launcher/minecraft/auth/MinecraftAccount.cpp | 32 +++++++++++++++++++++++++++- launcher/minecraft/auth/MinecraftAccount.h | 2 ++ 2 files changed, 33 insertions(+), 1 deletion(-) (limited to 'launcher/minecraft/auth') diff --git a/launcher/minecraft/auth/MinecraftAccount.cpp b/launcher/minecraft/auth/MinecraftAccount.cpp index 3b050ac0..d7b061e5 100644 --- a/launcher/minecraft/auth/MinecraftAccount.cpp +++ b/launcher/minecraft/auth/MinecraftAccount.cpp @@ -37,6 +37,7 @@ #include "MinecraftAccount.h" +#include #include #include #include @@ -100,7 +101,7 @@ MinecraftAccountPtr MinecraftAccount::createOffline(const QString &username) account->data.yggdrasilToken.extra["clientToken"] = QUuid::createUuid().toString().remove(QRegularExpression("[{}-]")); account->data.minecraftEntitlement.ownsMinecraft = true; account->data.minecraftEntitlement.canPlayMinecraft = true; - account->data.minecraftProfile.id = QUuid::createUuid().toString().remove(QRegularExpression("[{}-]")); + account->data.minecraftProfile.id = uuidFromUsername(username).toString().remove(QRegularExpression("[{}-]")); account->data.minecraftProfile.name = username; account->data.minecraftProfile.validity = Katabasis::Validity::Certain; return account; @@ -334,3 +335,32 @@ void MinecraftAccount::incrementUses() qWarning() << "Profile" << data.profileId() << "is now in use."; } } + +QUuid MinecraftAccount::uuidFromUsername(QString username) { + auto input = QString("OfflinePlayer:%1").arg(username).toUtf8(); + + // basically a reimplementation of Java's UUID#nameUUIDFromBytes + QByteArray digest = QCryptographicHash::hash(input, QCryptographicHash::Md5); + +#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) + auto bOr = [](QByteArray& array, int index, char value) { + array[index] = array.at(index) | value; + }; + auto bAnd = [](QByteArray& array, int index, char value) { + array[index] = array.at(index) & value; + }; +#else + auto bOr = [](QByteArray& array, qsizetype index, char value) { + array[index] |= value; + }; + auto bAnd = [](QByteArray& array, qsizetype index, char value) { + array[index] &= value; + }; +#endif + bAnd(digest, 6, (char) 0x0f); // clear version + bOr(digest, 6, (char) 0x30); // set to version 3 + bAnd(digest, 8, (char) 0x3f); // clear variant + bOr(digest, 8, (char) 0x80); // set to IETF variant + + return QUuid::fromRfc4122(digest); +} diff --git a/launcher/minecraft/auth/MinecraftAccount.h b/launcher/minecraft/auth/MinecraftAccount.h index 0dcaeb53..67623a5a 100644 --- a/launcher/minecraft/auth/MinecraftAccount.h +++ b/launcher/minecraft/auth/MinecraftAccount.h @@ -98,6 +98,8 @@ public: /* construction */ static MinecraftAccountPtr loadFromJsonV2(const QJsonObject &json); static MinecraftAccountPtr loadFromJsonV3(const QJsonObject &json); + static QUuid uuidFromUsername(QString username); + //! Saves a MinecraftAccount to a JSON object and returns it. QJsonObject saveToJson() const; -- cgit