monero/contrib/epee/include/net/levin_client.inl

// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER  BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 




//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
#include "string_tools.h"

#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "net"

namespace epee
{
namespace levin
{
inline
bool levin_client_impl::connect(u_long ip, int port, unsigned int timeout, const std::string& bind_ip)
{
	return m_transport.connect(string_tools::get_ip_string_from_int32(ip), port, timeout, timeout, bind_ip);
}
//------------------------------------------------------------------------------
inline
  bool levin_client_impl::connect(const std::string& addr, int port, unsigned int timeout, const std::string& bind_ip)
{
  return m_transport.connect(addr, port, timeout, timeout, bind_ip);
}
//------------------------------------------------------------------------------
inline
bool levin_client_impl::is_connected()
{
	return m_transport.is_connected();
}
//------------------------------------------------------------------------------
inline
bool levin_client_impl::disconnect()
{
	return m_transport.disconnect();
}
//------------------------------------------------------------------------------
inline
levin_client_impl::levin_client_impl()
{
}
//------------------------------------------------------------------------------
inline
levin_client_impl::~levin_client_impl()
{
	disconnect();
}
//------------------------------------------------------------------------------
inline
int levin_client_impl::invoke(int command, const epee::span<const uint8_t> in_buff, std::string& buff_out)
{
	if(!is_connected())
		return -1;

	bucket_head head = {0};
	head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
	head.m_cb = SWAP64LE(in_buff.size());
	head.m_have_to_return_data = true;
	head.m_command = SWAP32LE(command);
	if(!m_transport.send(&head, sizeof(head)))
		return -1;
	
	if(!m_transport.send(in_buff))
		return -1;
		
	std::string local_buff;
	if(!m_transport.recv_n(local_buff, sizeof(bucket_head)))
		return -1;
	
	head = *(bucket_head*)local_buff.data();


	if(head.m_signature!=SWAP64LE(LEVIN_SIGNATURE))
	{
		LOG_PRINT_L1("Signature mismatch in response");
		return -1;
	}
	
	if(!m_transport.recv_n(buff_out, head.m_cb))
		return -1;
	
	return head.m_return_code;
}
//------------------------------------------------------------------------------
inline
int levin_client_impl::notify(int command, const std::string& in_buff)
{
	if(!is_connected())
		return -1;

	bucket_head head = {0};
	head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
	head.m_cb = SWAP64LE(in_buff.size());
	head.m_have_to_return_data = false;
	head.m_command = SWAP32LE(command);
	
	if(!m_transport.send((const char*)&head, sizeof(head)))
		return -1;

	if(!m_transport.send(in_buff))
		return -1;

	return 1;
}

//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
inline
  int levin_client_impl2::invoke(int command, epee::span<const uint8_t>string& in_buff, std::string& buff_out)
{
  if(!is_connected())
    return -1;

  bucket_head2 head = {0};
  head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
  head.m_cb = SWAP64LE(in_buff.size());
  head.m_have_to_return_data = true;
  head.m_command = SWAP32LE(command);
  head.m_return_code = SWAP32LE(0);
  head.m_flags = SWAP32LE(LEVIN_PACKET_REQUEST);
  head.m_protocol_version = SWAP32LE(LEVIN_PROTOCOL_VER_1);
  if(!m_transport.send(&head, sizeof(head)))
    return -1;

  if(!m_transport.send(in_buff))
    return -1;

  std::string local_buff;
  if(!m_transport.recv_n(local_buff, sizeof(bucket_head2)))
    return -1;

  head = *(bucket_head2*)local_buff.data();

  if(head.m_signature != SWAP64LE(LEVIN_SIGNATURE))
  {
    LOG_PRINT_L1("Signature mismatch in response");
    return -1;
  }

  if(!m_transport.recv_n(buff_out, SWAP64LE(head.m_cb)))
    return -1;

  return head.m_return_code;
}
//------------------------------------------------------------------------------
inline
  int levin_client_impl2::notify(int command, const std::string& in_buff)
{
  if(!is_connected())
    return -1;

  bucket_head2 head = {0};
  head.m_signature = SWAP64LE(LEVIN_SIGNATURE);
  head.m_cb = SWAP64LE(in_buff.size());
  head.m_have_to_return_data = false;
  head.m_command = SWAP32LE(command);
  head.m_return_code = SWAP32LE(0);
  head.m_flags = SWAP32LE(LEVIN_PACKET_REQUEST);
  head.m_protocol_version = SWAP32LE(LEVIN_PROTOCOL_VER_1);

  if(!m_transport.send((const char*)&head, sizeof(head)))
    return -1;

  if(!m_transport.send(in_buff))
    return -1;

  return 1;
}

}
}
//------------------------------------------------------------------------------