Move all the things (YES. Move them.)

Also, implemented some basic modlist logic, to be wired up.

depends/settings/include/keyring.h

@@ -0,0 +1,92 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Authors: Orochimarufan <orochimarufan.x3@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *	 http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef KEYRING_H
+#define KEYRING_H
+
+#include <QString>
+
+#include "libsettings_config.h"
+
+/**
+ * @file libsettings/include/keyring.h
+ * Access to System Keyrings
+ */
+
+/**
+ * @brief The Keyring class
+ * the System Keyring/Keychain/Wallet/Vault/etc
+ */
+class LIBSETTINGS_EXPORT Keyring
+{
+public:
+	/**
+	 * @brief the System Keyring instance
+	 * @return the Keyring instance
+	 */
+	static Keyring *instance();
+
+	/**
+	 * @brief store a password in the Keyring
+	 * @param service the service name
+	 * @param username the account name
+	 * @param password the password to store
+	 * @return success
+	 */
+	virtual bool storePassword(QString service, QString username, QString password) = 0;
+
+	/**
+	 * @brief get a password from the Keyring
+	 * @param service the service name
+	 * @param username the account name
+	 * @return the password (success=!isNull())
+	 */
+	virtual QString getPassword(QString service, QString username) = 0;
+
+	/**
+	 * @brief lookup a password
+	 * @param service the service name
+	 * @param username the account name
+	 * @return wether the password is available
+	 */
+	virtual bool hasPassword(QString service, QString username) = 0;
+
+	/**
+	 * @brief get a list of all stored accounts.
+	 * @param service the service name
+	 * @return
+	 */
+	virtual QStringList getStoredAccounts(QString service) = 0;
+
+	/**
+	 * @brief Remove the specified account from storage
+	 * @param service the service name
+	 * @param username the account name
+	 * @return
+	 */
+	virtual void removeStoredAccount(QString service, QString username) = 0;
+	
+protected:
+	/// fall back to StubKeyring if false
+	virtual bool isValid() { return false; }
+
+private:
+	static Keyring *m_instance;
+	static void destroy();
+};
+
+#endif // KEYRING_H