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/*
* TLS Client
* (C) 2004-2011 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#ifndef BOTAN_TLS_CLIENT_H__
#define BOTAN_TLS_CLIENT_H__
#include <botan/tls_channel.h>
#include <botan/credentials_manager.h>
#include <vector>
namespace Botan {
namespace TLS {
/**
* SSL/TLS Client
*/
class BOTAN_DLL Client : public Channel
{
public:
/**
* Set up a new TLS client session
*
* @param socket_output_fn is called with data for the outbound socket
*
* @param proc_fn is called when new data (application or alerts) is received
*
* @param handshake_complete is called when a handshake is completed
*
* @param session_manager manages session state
*
* @param creds manages application/user credentials
*
* @param policy specifies other connection policy information
*
* @param rng a random number generator
*
* @param server_info is identifying information about the TLS server
*
* @param offer_version specifies which version we will offer
* to the TLS server.
*
* @param next_protocol allows the client to specify what the next
* protocol will be. For more information read
* http://technotes.googlecode.com/git/nextprotoneg.html.
*
* If the function is not empty, NPN will be negotiated
* and if the server supports NPN the function will be
* called with the list of protocols the server advertised;
* the client should return the protocol it would like to use.
*
* @param reserved_io_buffer_size This many bytes of memory will
* be preallocated for the read and write buffers. Smaller
* values just mean reallocations and copies are more likely.
*/
Client(std::function<void (const byte[], size_t)> socket_output_fn,
std::function<void (const byte[], size_t, Alert)> proc_fn,
std::function<bool (const Session&)> handshake_complete,
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>)>(),
size_t reserved_io_buffer_size = 16*1024
);
private:
std::vector<X509_Certificate>
get_peer_cert_chain(const Handshake_State& state) const override;
void initiate_handshake(Handshake_State& state,
bool force_full_renegotiation) override;
void send_client_hello(Handshake_State& state,
bool force_full_renegotiation,
Protocol_Version version,
const std::string& srp_identifier = "",
std::function<std::string (std::vector<std::string>)> next_protocol =
std::function<std::string (std::vector<std::string>)>());
void process_handshake_msg(const Handshake_State* active_state,
Handshake_State& pending_state,
Handshake_Type type,
const std::vector<byte>& contents) override;
Handshake_State* new_handshake_state(Handshake_IO* io) override;
const Policy& m_policy;
Credentials_Manager& m_creds;
const Server_Information m_info;
};
}
}
#endif
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