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/*
* TLS Blocking API
* (C) 2013 Jack Lloyd
* 2016 Matthias Gierlings
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/tls_blocking.h>
namespace Botan {
namespace TLS {
Blocking_Client::Blocking_Client(read_fn reader,
write_fn writer,
Session_Manager& session_manager,
Credentials_Manager& creds,
const Policy& policy,
RandomNumberGenerator& rng,
const Server_Information& server_info,
const Protocol_Version& offer_version,
const std::vector<std::string>& next) :
m_read(reader),
m_callbacks(new TLS::Compat_Callbacks(
/*
we are ok using deprecated features here because the whole Blocking_Client class
is also deprecated, so just silence the warning.
*/
TLS::Compat_Callbacks::SILENCE_DEPRECATION_WARNING::PLEASE,
writer,
std::bind(&Blocking_Client::data_cb, this, std::placeholders::_1, std::placeholders::_2),
std::function<void (Alert)>(std::bind(&Blocking_Client::alert_cb, this, std::placeholders::_1)),
std::bind(&Blocking_Client::handshake_cb, this, std::placeholders::_1)
)),
m_channel(*m_callbacks.get(),
session_manager,
creds,
policy,
rng,
server_info,
offer_version,
next)
{
}
bool Blocking_Client::handshake_cb(const Session& session)
{
return this->handshake_complete(session);
}
void Blocking_Client::alert_cb(const Alert& alert)
{
this->alert_notification(alert);
}
void Blocking_Client::data_cb(const uint8_t data[], size_t data_len)
{
m_plaintext.insert(m_plaintext.end(), data, data + data_len);
}
void Blocking_Client::do_handshake()
{
std::vector<uint8_t> readbuf(4096);
while(!m_channel.is_closed() && !m_channel.is_active())
{
const size_t from_socket = m_read(readbuf.data(), readbuf.size());
m_channel.received_data(readbuf.data(), from_socket);
}
}
size_t Blocking_Client::read(uint8_t buf[], size_t buf_len)
{
std::vector<uint8_t> readbuf(4096);
while(m_plaintext.empty() && !m_channel.is_closed())
{
const size_t from_socket = m_read(readbuf.data(), readbuf.size());
m_channel.received_data(readbuf.data(), from_socket);
}
const size_t returned = std::min(buf_len, m_plaintext.size());
for(size_t i = 0; i != returned; ++i)
buf[i] = m_plaintext[i];
m_plaintext.erase(m_plaintext.begin(), m_plaintext.begin() + returned);
BOTAN_ASSERT_IMPLICATION(returned == 0, m_channel.is_closed(),
"Only return zero if channel is closed");
return returned;
}
}
}