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/*
* TLS Blocking API
* (C) 2013 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#ifndef BOTAN_TLS_BLOCKING_CHANNELS_H__
#define BOTAN_TLS_BLOCKING_CHANNELS_H__
#include <botan/tls_client.h>
#include <botan/tls_server.h>
#include <deque>
namespace Botan {
template<typename T> using secure_deque = std::vector<T, secure_allocator<T>>;
namespace TLS {
/**
* Blocking TLS Client
*/
class BOTAN_DLL Blocking_Client
{
public:
Blocking_Client(std::function<size_t (byte[], size_t)> read_fn,
std::function<void (const byte[], size_t)> write_fn,
Session_Manager& session_manager,
Credentials_Manager& creds,
const Policy& policy,
RandomNumberGenerator& rng,
const Server_Information& server_info = Server_Information(),
const Protocol_Version offer_version = Protocol_Version::latest_tls_version(),
std::function<std::string (std::vector<std::string>)> next_protocol =
std::function<std::string (std::vector<std::string>)>());
/**
* Completes full handshake then returns
*/
void do_handshake();
/**
* Number of bytes pending read in the plaintext buffer (bytes
* readable without blocking)
*/
size_t pending() const { return m_plaintext.size(); }
/**
* Blocking read, will return at least 1 byte or 0 on connection close
*/
size_t read(byte buf[], size_t buf_len);
void write(const byte buf[], size_t buf_len) { m_channel.send(buf, buf_len); }
const TLS::Channel& underlying_channel() const { return m_channel; }
TLS::Channel& underlying_channel() { return m_channel; }
void close() { m_channel.close(); }
bool is_closed() const { return m_channel.is_closed(); }
std::vector<X509_Certificate> peer_cert_chain() const
{ return m_channel.peer_cert_chain(); }
virtual ~Blocking_Client() {}
protected:
/**
* Can override to get the handshake complete notification
*/
virtual bool handshake_complete(const Session&) { return true; }
/**
* Can override to get notification of alerts
*/
virtual void alert_notification(const Alert&) {}
private:
bool handshake_complete_cb(const Session&);
void process_data(const byte data[], size_t data_len,
const Alert& alert);
std::function<size_t (byte[], size_t)> m_read_fn;
TLS::Client m_channel;
secure_deque<byte> m_plaintext;
};
}
}
#endif
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