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/*
* TLS Channel
* (C) 2011 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#ifndef BOTAN_TLS_CHANNEL_H__
#define BOTAN_TLS_CHANNEL_H__
#include <botan/tls_policy.h>
#include <botan/tls_record.h>
#include <botan/x509cert.h>
#include <vector>
namespace Botan {
/**
* Generic interface for TLS endpoint
*/
class BOTAN_DLL TLS_Channel
{
public:
/**
* Inject TLS traffic received from counterparty
* @return a hint as the how many more bytes we need to process the
current record (this may be 0 if on a record boundary)
*/
virtual size_t received_data(const byte buf[], size_t buf_size);
/**
* Inject plaintext intended for counterparty
*/
virtual void queue_for_sending(const byte buf[], size_t buf_size);
/**
* Send a close notification alert
*/
void close() { alert(WARNING, CLOSE_NOTIFY); }
/**
* Send a TLS alert message. If the alert is fatal, the
* internal state (keys, etc) will be reset
*/
void alert(Alert_Level level, Alert_Type type);
/**
* Is the connection active?
*/
bool is_active() const { return active; }
/**
* Return the certificates of the peer
*/
std::vector<X509_Certificate> peer_cert_chain() const { return peer_certs; }
TLS_Channel(std::tr1::function<void (const byte[], size_t)> socket_output_fn,
std::tr1::function<void (const byte[], size_t, u16bit)> proc_fn);
virtual ~TLS_Channel();
protected:
virtual void read_handshake(byte rec_type,
const MemoryRegion<byte>& rec_buf);
virtual void process_handshake_msg(Handshake_Type type,
const MemoryRegion<byte>& contents) = 0;
std::tr1::function<void (const byte[], size_t, u16bit)> proc_fn;
Record_Writer writer;
Record_Reader reader;
SecureQueue pre_handshake_write_queue;
std::vector<X509_Certificate> peer_certs;
class Handshake_State* state;
bool active;
};
}
#endif
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