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/*
* TLS Heartbeats
* (C) 2012,2015 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/internal/tls_heartbeats.h>
#include <botan/internal/tls_extensions.h>
#include <botan/internal/tls_reader.h>
#include <botan/tls_exceptn.h>
namespace Botan {
namespace TLS {
Heartbeat_Message::Heartbeat_Message(const std::vector<byte>& buf)
{
TLS_Data_Reader reader("Heartbeat", buf);
const byte type = reader.get_byte();
if(type != 1 && type != 2)
throw TLS_Exception(Alert::ILLEGAL_PARAMETER,
"Unknown heartbeat message type");
m_type = static_cast<Type>(type);
m_payload = reader.get_range<byte>(2, 0, 16*1024);
m_padding = reader.get_remaining();
if(m_padding.size() < 16)
throw Decoding_Error("Invalid heartbeat padding");
}
Heartbeat_Message::Heartbeat_Message(Type type,
const byte payload[],
size_t payload_len,
const std::vector<byte>& padding) :
m_type(type),
m_payload(payload, payload + payload_len),
m_padding(padding)
{
if(payload_len >= 64*1024)
throw Exception("Heartbeat payload too long");
if(m_padding.size() < 16)
throw Exception("Invalid heartbeat padding length");
}
std::vector<byte> Heartbeat_Message::contents() const
{
//std::vector<byte> send_buf(3 + m_payload.size() + 16);
std::vector<byte> send_buf;
send_buf.reserve(3 + m_payload.size() + m_padding.size());
send_buf.push_back(m_type);
send_buf.push_back(get_byte<u16bit>(0, m_payload.size()));
send_buf.push_back(get_byte<u16bit>(1, m_payload.size()));
send_buf += m_payload;
send_buf += m_padding;
return send_buf;
}
std::vector<byte> Heartbeat_Support_Indicator::serialize() const
{
std::vector<byte> heartbeat(1);
heartbeat[0] = (m_peer_allowed_to_send ? 1 : 2);
return heartbeat;
}
Heartbeat_Support_Indicator::Heartbeat_Support_Indicator(TLS_Data_Reader& reader,
u16bit extension_size)
{
if(extension_size != 1)
throw Decoding_Error("Strange size for heartbeat extension");
const byte code = reader.get_byte();
if(code != 1 && code != 2)
throw TLS_Exception(Alert::ILLEGAL_PARAMETER,
"Unknown heartbeat code " + std::to_string(code));
m_peer_allowed_to_send = (code == 1);
}
}
}
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