Merged in MHR-36 (pull request #17)

MHR-36

1 files changed, 126 insertions, 0 deletions

diff --git a/Kernel/KernelKit/User.hxx b/Kernel/KernelKit/User.hxx
new file mode 100644
index 00000000..02ba475d
--- /dev/null
+++ b/Kernel/KernelKit/User.hxx
@@ -0,0 +1,126 @@
+/* -------------------------------------------
+
+ Copyright ZKA Technologies
+
+------------------------------------------- */
+
+#ifndef _INC_PERMISSION_SEL_HXX_
+#define _INC_PERMISSION_SEL_HXX_
+
+#include <CompilerKit/CompilerKit.hxx>
+#include <NewKit/String.hpp>
+#include <NewKit/Defines.hpp>
+
+// user mode users.
+#define kSuperUser "Admin"
+#define kGuestUser "Guest"
+
+#define kUsersDir "\\Users\\Store\\"
+
+#define kMaxUserNameLen (255)
+
+// hash 'password' -> base64+md5 encoded data
+// use this data to then fetch specific data of the user..
+
+namespace Kernel
+{
+	enum class RingKind
+	{
+		kRingStdUser   = 1,
+		kRingSuperUser = 2,
+		kRingGuestUser = 5,
+		kRingCount	   = 5,
+	};
+
+	class User final
+	{
+	public:
+		explicit User() = default;
+
+		User(const Int32& sel, const Char* userName);
+		User(const RingKind& kind, const Char* userName);
+
+		~User();
+
+	public:
+		NEWOS_COPY_DEFAULT(User)
+
+	public:
+		bool operator==(const User& lhs);
+		bool operator!=(const User& lhs);
+
+	public:
+		/// @brief Getters.
+		const RingKind&	 Ring() noexcept;
+		const StringView Name() noexcept;
+
+		Bool IsStdUser() noexcept;
+		Bool IsSuperUser() noexcept;
+
+	private:
+		RingKind   fRing{RingKind::kRingStdUser};
+		StringView fUserName{kMaxUserNameLen};
+	};
+
+	class UserView final
+	{
+		UserView()	= default;
+		~UserView() = default;
+
+		User* fCurrentUser		 = nullptr;
+		User* fLastLoggedOffUser = nullptr;
+
+	public:
+		User* fRootUser = nullptr;
+
+	public:
+		NEWOS_COPY_DELETE(UserView);
+
+		STATIC UserView* The() noexcept
+		{
+			UserView* view = nullptr;
+
+			if (!view)
+				view = new UserView();
+
+			return view;
+		}
+
+		Void LogIn(User* user) noexcept
+		{
+			if (fCurrentUser)
+			{
+				if (!fLastLoggedOffUser)
+				{
+					fLastLoggedOffUser = fCurrentUser;
+				}
+				else
+				{
+					this->LogOff();
+				}
+			}
+
+			fCurrentUser = user;
+		}
+
+		Void LogOff() noexcept
+		{
+			if (!fCurrentUser)
+				return;
+
+			// an illegal operation just occured, we can't risk more.
+			if (fCurrentUser == fRootUser)
+			{
+			    ke_stop(RUNTIME_CHECK_BOOTSTRAP);
+			}
+
+			if (fLastLoggedOffUser)
+				delete fLastLoggedOffUser;
+
+			fLastLoggedOffUser = nullptr;
+			fLastLoggedOffUser = fCurrentUser;
+		}
+	};
+} // namespace Kernel
+
+#endif /* ifndef _INC_PERMISSION_SEL_HXX_ */