BlueZ D-Bus Agent API description
**********************************

Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
Copyright (C) 2005-2006  Johan Hedberg <johan.hedberg@nokia.com>


Agent hierarchy
===============

Service		unique name
Interface	org.bluez.Agent
Object path	freely definable

Methods		void Release()

			This method gets called when the service daemon
			unregisters the agent. An agent can use it to do
			cleanup tasks. There is no need to unregister the
			agent, because when this method gets called it has
			already been unregistered.

		string RequestPinCode(object device)

			This method gets called when the service daemon
			needs to get the passkey for an authentication.

			The return value should be a string of 1-16 characters
			length. The string can be alphanumeric.

			Possible errors: org.bluez.Error.Rejected
			                 org.bluez.Error.Canceled

		uint32 RequestPasskey(object device)

			This method gets called when the service daemon
			needs to get the passkey for an authentication.

			The return value should be a numeric value
			between 0-999999.

			Possible errors: org.bluez.Error.Rejected
			                 org.bluez.Error.Canceled

		void DisplayPasskey(object device, uint32 passkey,
								uint16 entered)

			This method gets called when the service daemon
			needs to display a passkey for an authentication.

			The entered parameter indicates the number of already
			typed keys on the remote side.

			An empty reply should be returned. When the passkey
			needs no longer to be displayed, the Cancel method
			of the agent will be called.

			During the pairing process this method might be
			called multiple times to update the entered value.

			Note that the passkey will always be a 6-digit number,
			so the display should be zero-padded at the start if
			the value contains less than 6 digits.

		void DisplayPinCode(object device, string pincode)

			This method gets called when the service daemon
			needs to display a pincode for an authentication.

			An empty reply should be returned. When the pincode
			needs no longer to be displayed, the Cancel method
			of the agent will be called.

			If this method is not implemented the RequestPinCode
			method will be used instead.

			This is used during the pairing process of keyboards
			that don't support Bluetooth 2.1 Secure Simple Pairing,
			in contrast to DisplayPasskey which is used for those
			that do.

			This method will only ever be called once since
			older keyboards do not support typing notification.

			Note that the PIN will always be a 6-digit number,
			zero-padded to 6 digits. This is for harmony with
			the later specification.

		void RequestConfirmation(object device, uint32 passkey)

			This method gets called when the service daemon
			needs to confirm a passkey for an authentication.

			To confirm the value it should return an empty reply
			or an error in case the passkey is invalid.

			Note that the passkey will always be a 6-digit number,
			so the display should be zero-padded at the start if
			the value contains less than 6 digits.

			Possible errors: org.bluez.Error.Rejected
			                 org.bluez.Error.Canceled

		void RequestAuthorization(object device)

			This method gets called to request the user to
			authorize an incoming pairing attempt which
			would in other circumstances trigger the just-works
			model.

			Possible errors: org.bluez.Error.Rejected
			                 org.bluez.Error.Canceled

		void AuthorizeService(object device, string uuid)

			This method gets called when the service daemon
			needs to authorize a connection/service request.

			Possible errors: org.bluez.Error.Rejected
			                 org.bluez.Error.Canceled

		void ConfirmModeChange(string mode)

			This method gets called if a mode change is requested
			that needs to be confirmed by the user. An example
			would be leaving flight mode.

			Possible errors: org.bluez.Error.Rejected
			                 org.bluez.Error.Canceled

		void Cancel()

			This method gets called to indicate that the agent
			request failed before a reply was returned.