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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_SECURE_CHANNEL_NEARBY_ENDPOINT_FINDER_H_
#define CHROME_BROWSER_ASH_SECURE_CHANNEL_NEARBY_ENDPOINT_FINDER_H_
#include "base/functional/callback_forward.h"
#include "base/unguessable_token.h"
#include "chromeos/ash/services/nearby/public/mojom/nearby_connections.mojom.h"
#include "chromeos/ash/services/nearby/public/mojom/nearby_connections_types.mojom-shared.h"
namespace ash {
namespace secure_channel {
// Discovers an endpoint corresponding to a remote device via the Nearby
// Connections library using the service ID corresponding to SecureChannel.
// Only one NearbyEndpointFinder is meant to be active at a given time. Note
// that this class does not implement timeouts for finding a connection.
class NearbyEndpointFinder {
public:
virtual ~NearbyEndpointFinder();
// Callback which receives an endpoint ID and additional metadata about a
// discovered endpoint.
using EndpointCallback = base::OnceCallback<void(
const std::string&,
::nearby::connections::mojom::DiscoveredEndpointInfoPtr)>;
// Attempts to find an endpoint for the device with the provided Bluetooth
// address, which is expected to be a 6-byte MAC address.
void FindEndpoint(
const std::vector<uint8_t>& remote_device_bluetooth_address,
const std::vector<uint8_t>& eid,
EndpointCallback success_callback,
base::OnceCallback<void(::nearby::connections::mojom::Status)>
failure_callback);
protected:
NearbyEndpointFinder();
const std::vector<uint8_t>& remote_device_bluetooth_address() const {
return remote_device_bluetooth_address_;
}
const std::vector<uint8_t>& eid() const { return eid_; }
void NotifyEndpointFound(
const std::string& endpoint_id,
::nearby::connections::mojom::DiscoveredEndpointInfoPtr info);
void NotifyEndpointDiscoveryFailure(
::nearby::connections::mojom::Status status);
virtual void PerformFindEndpoint() = 0;
private:
std::vector<uint8_t> remote_device_bluetooth_address_;
std::vector<uint8_t> eid_;
EndpointCallback success_callback_;
base::OnceCallback<void(::nearby::connections::mojom::Status)>
failure_callback_;
};
} // namespace secure_channel
} // namespace ash
#endif // CHROME_BROWSER_ASH_SECURE_CHANNEL_NEARBY_ENDPOINT_FINDER_H_
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