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// HTTPConnection.cpp
// Implements the cHTTPConnection class representing a single persistent connection in the HTTP server.
#include "Globals.h"
#include "HTTPConnection.h"
#include "HTTPMessage.h"
#include "HTTPServer.h"
cHTTPConnection::cHTTPConnection(cHTTPServer & a_HTTPServer) :
m_HTTPServer(a_HTTPServer),
m_State(wcsRecvHeaders),
m_CurrentRequest(NULL)
{
// LOGD("HTTP: New connection at %p", this);
}
cHTTPConnection::~cHTTPConnection()
{
// LOGD("HTTP: Connection deleting: %p", this);
delete m_CurrentRequest;
}
void cHTTPConnection::SendStatusAndReason(int a_StatusCode, const AString & a_Response)
{
AppendPrintf(m_OutgoingData, "%d %s\r\nContent-Length: 0\r\n\r\n", a_StatusCode, a_Response.c_str());
m_HTTPServer.NotifyConnectionWrite(*this);
m_State = wcsRecvHeaders;
}
void cHTTPConnection::SendNeedAuth(const AString & a_Realm)
{
AppendPrintf(m_OutgoingData, "HTTP/1.1 401 Unauthorized\r\nWWW-Authenticate: Basic realm=\"%s\"\r\nContent-Length: 0\r\n\r\n", a_Realm.c_str());
m_HTTPServer.NotifyConnectionWrite(*this);
m_State = wcsRecvHeaders;
}
void cHTTPConnection::Send(const cHTTPResponse & a_Response)
{
ASSERT(m_State == wcsRecvIdle);
a_Response.AppendToData(m_OutgoingData);
m_State = wcsSendingResp;
m_HTTPServer.NotifyConnectionWrite(*this);
}
void cHTTPConnection::Send(const void * a_Data, size_t a_Size)
{
ASSERT(m_State == wcsSendingResp);
AppendPrintf(m_OutgoingData, SIZE_T_FMT_HEX "\r\n", a_Size);
m_OutgoingData.append((const char *)a_Data, a_Size);
m_OutgoingData.append("\r\n");
m_HTTPServer.NotifyConnectionWrite(*this);
}
void cHTTPConnection::FinishResponse(void)
{
ASSERT(m_State == wcsSendingResp);
m_OutgoingData.append("0\r\n\r\n");
m_State = wcsRecvHeaders;
m_HTTPServer.NotifyConnectionWrite(*this);
}
void cHTTPConnection::AwaitNextRequest(void)
{
switch (m_State)
{
case wcsRecvHeaders:
{
// Nothing has been received yet, or a special response was given (SendStatusAndReason() or SendNeedAuth() )
break;
}
case wcsRecvIdle:
{
// The client is waiting for a response, send an "Internal server error":
m_OutgoingData.append("HTTP/1.1 500 Internal Server Error\r\n\r\n");
m_HTTPServer.NotifyConnectionWrite(*this);
m_State = wcsRecvHeaders;
break;
}
case wcsSendingResp:
{
// The response headers have been sent, we need to terminate the response body:
m_OutgoingData.append("0\r\n\r\n");
m_State = wcsRecvHeaders;
break;
}
default:
{
ASSERT(!"Unhandled state recovery");
break;
}
}
}
void cHTTPConnection::Terminate(void)
{
if (m_CurrentRequest != NULL)
{
m_HTTPServer.RequestFinished(*this, *m_CurrentRequest);
}
m_HTTPServer.CloseConnection(*this);
}
void cHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
{
switch (m_State)
{
case wcsRecvHeaders:
{
if (m_CurrentRequest == NULL)
{
m_CurrentRequest = new cHTTPRequest;
}
size_t BytesConsumed = m_CurrentRequest->ParseHeaders(a_Data, a_Size);
if (BytesConsumed == AString::npos)
{
delete m_CurrentRequest;
m_CurrentRequest = NULL;
m_State = wcsInvalid;
m_HTTPServer.CloseConnection(*this);
return;
}
if (m_CurrentRequest->IsInHeaders())
{
// The request headers are not yet complete
return;
}
// The request has finished parsing its headers successfully, notify of it:
m_State = wcsRecvBody;
m_HTTPServer.NewRequest(*this, *m_CurrentRequest);
m_CurrentRequestBodyRemaining = m_CurrentRequest->GetContentLength();
if (m_CurrentRequestBodyRemaining == AString::npos)
{
// The body length was not specified in the request, assume zero
m_CurrentRequestBodyRemaining = 0;
}
// Process the rest of the incoming data into the request body:
if (a_Size > BytesConsumed)
{
cHTTPConnection::DataReceived(a_Data + BytesConsumed, a_Size - BytesConsumed);
}
else
{
cHTTPConnection::DataReceived("", 0); // If the request has zero body length, let it be processed right-away
}
break;
}
case wcsRecvBody:
{
ASSERT(m_CurrentRequest != NULL);
if (m_CurrentRequestBodyRemaining > 0)
{
size_t BytesToConsume = std::min(m_CurrentRequestBodyRemaining, (size_t)a_Size);
m_HTTPServer.RequestBody(*this, *m_CurrentRequest, a_Data, BytesToConsume);
m_CurrentRequestBodyRemaining -= BytesToConsume;
}
if (m_CurrentRequestBodyRemaining == 0)
{
m_State = wcsRecvIdle;
m_HTTPServer.RequestFinished(*this, *m_CurrentRequest);
if (!m_CurrentRequest->DoesAllowKeepAlive())
{
m_State = wcsInvalid;
m_HTTPServer.CloseConnection(*this);
return;
}
delete m_CurrentRequest;
m_CurrentRequest = NULL;
}
break;
}
default:
{
// TODO: Should we be receiving data in this state?
break;
}
}
}
void cHTTPConnection::GetOutgoingData(AString & a_Data)
{
std::swap(a_Data, m_OutgoingData);
}
void cHTTPConnection::SocketClosed(void)
{
if (m_CurrentRequest != NULL)
{
m_HTTPServer.RequestFinished(*this, *m_CurrentRequest);
}
m_HTTPServer.CloseConnection(*this);
}
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