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check I2CP message size

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pull/1583/head
orignal 4 years ago
parent bc330ff0ea
commit 86e3b977e4
2 changed files with 55 additions and 63 deletions
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115
libi2pd_client/I2CP.cpp
Unescape Escape View File

@ -354,40 +354,17 @@ namespace client
void I2CPSession::SendI2CPMessage (uint8_t type, const uint8_t * payload, size_t len)
{
if (len > I2CP_MAX_MESSAGE_LENGTH)
auto l = len + I2CP_HEADER_SIZE;
if (l > I2CP_MAX_MESSAGE_LENGTH)
{
LogPrint (eLogError, "I2CP: Message to send is too long ", len);
LogPrint (eLogError, "I2CP: Message to send is too long ", l);
return;
}
auto socket = m_Socket;
if (socket)
{
auto l = len + I2CP_HEADER_SIZE;
uint8_t * buf = m_IsSending ? new uint8_t[l] : m_SendBuffer;
htobe32buf (buf + I2CP_HEADER_LENGTH_OFFSET, len);
buf[I2CP_HEADER_TYPE_OFFSET] = type;
memcpy (buf + I2CP_HEADER_SIZE, payload, len);
if (m_IsSending)
{
if (!m_SendQueue)
m_SendQueue = std::make_shared<SendQueue::element_type> ();
if (m_SendQueue->size () > I2CP_MAX_SEND_QUEUE_SIZE)
{
LogPrint (eLogError, "I2CP: Queue size exceeds ", I2CP_MAX_SEND_QUEUE_SIZE);
return;
}
m_SendQueue->push_back ({buf, l});
}
else
{
m_IsSending = true;
boost::asio::async_write (*socket, boost::asio::buffer (m_SendBuffer, l), boost::asio::transfer_all (),
std::bind(&I2CPSession::HandleI2CPMessageSent, shared_from_this (),
std::placeholders::_1, std::placeholders::_2));
}
}
else
LogPrint (eLogError, "I2CP: Can't write to the socket");
uint8_t * buf = m_IsSending ? new uint8_t[l] : m_SendBuffer;
htobe32buf (buf + I2CP_HEADER_LENGTH_OFFSET, len);
buf[I2CP_HEADER_TYPE_OFFSET] = type;
memcpy (buf + I2CP_HEADER_SIZE, payload, len);
SendBuffer (buf, l);
}
void I2CPSession::HandleI2CPMessageSent (const boost::system::error_code& ecode, std::size_t bytes_transferred)
@ -420,6 +397,38 @@ namespace client
HandleI2CPMessageSent (ecode, bytes_transferred);
}
void I2CPSession::SendBuffer (uint8_t * buf, size_t len)
{
auto socket = m_Socket;
if (socket)
{
if (m_IsSending)
{
auto sendQueue = m_SendQueue;
if (!sendQueue)
{
sendQueue = std::make_shared<SendQueue::element_type> ();
m_SendQueue = sendQueue;
}
else if (sendQueue->size () > I2CP_MAX_SEND_QUEUE_SIZE)
{
LogPrint (eLogError, "I2CP: Queue size exceeds ", I2CP_MAX_SEND_QUEUE_SIZE);
return;
}
sendQueue->push_back ({buf, len});
}
else
{
m_IsSending = true;
boost::asio::async_write (*socket, boost::asio::buffer (buf, len), boost::asio::transfer_all (),
std::bind(&I2CPSession::HandleI2CPMessageSent, shared_from_this (),
std::placeholders::_1, std::placeholders::_2));
}
}
else
LogPrint (eLogError, "I2CP: Can't write to the socket");
}
std::string I2CPSession::ExtractString (const uint8_t * buf, size_t len)
{
@ -850,38 +859,20 @@ namespace client
void I2CPSession::SendMessagePayloadMessage (const uint8_t * payload, size_t len)
{
// we don't use SendI2CPMessage to eliminate additional copy
auto socket = m_Socket;
if (socket)
auto l = len + 10 + I2CP_HEADER_SIZE;
if (l > I2CP_MAX_MESSAGE_LENGTH)
{
auto l = len + 10 + I2CP_HEADER_SIZE;
uint8_t * buf = m_IsSending ? new uint8_t[l] : m_SendBuffer;
htobe32buf (buf + I2CP_HEADER_LENGTH_OFFSET, len + 10);
buf[I2CP_HEADER_TYPE_OFFSET] = I2CP_MESSAGE_PAYLOAD_MESSAGE;
htobe16buf (buf + I2CP_HEADER_SIZE, m_SessionID);
htobe32buf (buf + I2CP_HEADER_SIZE + 2, m_MessageID++);
htobe32buf (buf + I2CP_HEADER_SIZE + 6, len);
memcpy (buf + I2CP_HEADER_SIZE + 10, payload, len);
if (m_IsSending)
{
if (!m_SendQueue)
m_SendQueue = std::make_shared<SendQueue::element_type> ();
if (m_SendQueue->size () > I2CP_MAX_SEND_QUEUE_SIZE)
{
LogPrint (eLogError, "I2CP: Queue size exceeds ", I2CP_MAX_SEND_QUEUE_SIZE);
return;
}
m_SendQueue->push_back ({buf, l});
}
else
{
m_IsSending = true;
boost::asio::async_write (*socket, boost::asio::buffer (m_SendBuffer, l), boost::asio::transfer_all (),
std::bind(&I2CPSession::HandleI2CPMessageSent, shared_from_this (),
std::placeholders::_1, std::placeholders::_2));
}
}
else
LogPrint (eLogError, "I2CP: Can't write to the socket");
LogPrint (eLogError, "I2CP: Message to send is too long ", l);
return;
}
uint8_t * buf = m_IsSending ? new uint8_t[l] : m_SendBuffer;
htobe32buf (buf + I2CP_HEADER_LENGTH_OFFSET, len + 10);
buf[I2CP_HEADER_TYPE_OFFSET] = I2CP_MESSAGE_PAYLOAD_MESSAGE;
htobe16buf (buf + I2CP_HEADER_SIZE, m_SessionID);
htobe32buf (buf + I2CP_HEADER_SIZE + 2, m_MessageID++);
htobe32buf (buf + I2CP_HEADER_SIZE + 6, len);
memcpy (buf + I2CP_HEADER_SIZE + 10, payload, len);
SendBuffer (buf, l);
}
I2CPServer::I2CPServer (const std::string& interface, int port, bool isSingleThread):

3
libi2pd_client/I2CP.h
Unescape Escape View File

@ -169,7 +169,8 @@ namespace client
void HandleReceivedPayload (const boost::system::error_code& ecode, std::size_t bytes_transferred);
void HandleMessage ();
void Terminate ();
void SendBuffer (uint8_t * buf, size_t len);
void HandleI2CPMessageSent (const boost::system::error_code& ecode, std::size_t bytes_transferred);
void HandleI2CPMessageSentQueue (const boost::system::error_code& ecode, std::size_t bytes_transferred, SendQueue queue);
std::string ExtractString (const uint8_t * buf, size_t len);

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