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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "socket_handle.h"
#include "crypto_socket.h"
#include <memory>
#include <mutex>
namespace vespalib {
class SocketSpec;
/**
* Component responsible for wrapping low-level sockets into
* appropriate CryptoSocket instances. This is the top-level interface
* used by code wanting to perform network io with appropriate
* encryption.
**/
struct CryptoEngine {
using SP = std::shared_ptr<CryptoEngine>;
virtual bool use_tls_when_client() const = 0;
virtual bool always_use_tls_when_server() const = 0;
virtual CryptoSocket::UP create_client_crypto_socket(SocketHandle socket, const SocketSpec &spec) = 0;
virtual CryptoSocket::UP create_server_crypto_socket(SocketHandle socket) = 0;
virtual ~CryptoEngine();
static CryptoEngine::SP get_default();
};
/**
* Crypto engine without encryption.
**/
struct NullCryptoEngine : public CryptoEngine {
~NullCryptoEngine() override;
bool use_tls_when_client() const override { return false; }
bool always_use_tls_when_server() const override { return false; }
CryptoSocket::UP create_client_crypto_socket(SocketHandle socket, const SocketSpec &spec) override;
CryptoSocket::UP create_server_crypto_socket(SocketHandle socket) override;
};
} // namespace vespalib
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