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/*
* TLS Blocking API
* (C) 2013 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#include <botan/tls_blocking.h>
namespace Botan {
namespace TLS {
using namespace std::placeholders;
Blocking_Client::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,
const Protocol_Version offer_version,
std::function<std::string (std::vector<std::string>)> next_protocol) :
m_read_fn(read_fn),
m_channel(write_fn,
std::bind(&Blocking_Client::process_data, this, _1, _2, _3),
std::bind(&Blocking_Client::handshake_complete, this, _1),
session_manager,
creds,
policy,
rng,
server_info,
offer_version,
next_protocol)
{
}
bool Blocking_Client::handshake_complete_cb(const Session& session)
{
return this->handshake_complete(session);
}
void Blocking_Client::process_data(const byte data[], size_t data_len,
const Alert& alert)
{
m_plaintext.insert(m_plaintext.end(), data, data + data_len);
if(alert.is_valid())
alert_notification(alert);
}
void Blocking_Client::do_handshake()
{
std::vector<byte> readbuf(4096);
while(!m_channel.is_closed() && !m_channel.is_active())
{
const size_t from_socket = m_read_fn(&readbuf[0], readbuf.size());
m_channel.received_data(&readbuf[0], from_socket);
}
}
size_t Blocking_Client::read(byte buf[], size_t buf_len)
{
std::vector<byte> readbuf(4096);
while(m_plaintext.empty() && !m_channel.is_closed())
{
const size_t from_socket = m_read_fn(&readbuf[0], readbuf.size());
m_channel.received_data(&readbuf[0], 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;
}
}
}
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