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/*
* TLS Client
* (C) 2004-2011 Jack Lloyd
* 2016 Matthias Gierlings
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_TLS_CLIENT_H_
#define BOTAN_TLS_CLIENT_H_
#include <botan/tls_channel.h>
#include <botan/tls_policy.h>
#include <botan/credentials_manager.h>
#include <vector>
namespace Botan {
namespace TLS {
/**
* SSL/TLS Client
*/
class BOTAN_PUBLIC_API(2,0) Client final : public Channel
{
public:
/**
* Set up a new TLS client session
*
* @param callbacks contains a set of callback function references
* required by the TLS client.
*
* @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_protocols specifies protocols to advertise with ALPN
*
* @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(Callbacks& callbacks,
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(),
const std::vector<std::string>& next_protocols = {},
size_t reserved_io_buffer_size = TLS::Client::IO_BUF_DEFAULT_SIZE
);
/**
* DEPRECATED. This constructor is only provided for backward
* compatibility and should not be used in new code.
*
* Set up a new TLS client session
*
* @param output_fn is called with data for the outbound socket
*
* @param app_data_cb is called when new application data is received
*
* @param alert_cb is called when a TLS alert is received
*
* @param hs_cb 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_protocols specifies protocols to advertise with ALPN
*
* @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.
*/
BOTAN_DEPRECATED("Use TLS::Client(TLS::Callbacks ...)")
Client(output_fn output_fn,
data_cb app_data_cb,
alert_cb alert_cb,
handshake_cb hs_cb,
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(),
const std::vector<std::string>& next_protocols = {},
size_t reserved_io_buffer_size = TLS::Client::IO_BUF_DEFAULT_SIZE
);
/**
* DEPRECATED. This constructor is only provided for backward
* compatibility and should not be used in new implementations.
*/
BOTAN_DEPRECATED("Use TLS::Client(TLS::Callbacks ...)")
Client(output_fn out,
data_cb app_data_cb,
alert_cb alert_cb,
handshake_cb hs_cb,
handshake_msg_cb hs_msg_cb,
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(),
const std::vector<std::string>& next_protocols = {}
);
/**
* @return network protocol as advertised by the TLS server, if server sent the ALPN extension
*/
const std::string& application_protocol() const { return m_application_protocol; }
private:
void init(const Protocol_Version& protocol_version,
const std::vector<std::string>& next_protocols);
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 = "",
const std::vector<std::string>& next_protocols = {});
void process_handshake_msg(const Handshake_State* active_state,
Handshake_State& pending_state,
Handshake_Type type,
const std::vector<uint8_t>& contents) override;
Handshake_State* new_handshake_state(Handshake_IO* io) override;
Credentials_Manager& m_creds;
const Server_Information m_info;
std::string m_application_protocol;
};
}
}
#endif
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