1 files changed, 278 insertions, 0 deletions

diff --git a/src/HTTP/HTTPServerConnection.cpp b/src/HTTP/HTTPServerConnection.cpp
new file mode 100644
index 000000000..0ee9f3ce7
--- /dev/null
+++ b/src/HTTP/HTTPServerConnection.cpp
@@ -0,0 +1,278 @@
+
+// HTTPConnection.cpp
+
+// Implements the cHTTPServerConnection class representing a single persistent connection in the HTTP server.
+
+#include "Globals.h"
+#include "HTTPServerConnection.h"
+#include "HTTPRequestParser.h"
+#include "HTTPServer.h"
+
+
+
+
+
+cHTTPServerConnection::cHTTPServerConnection(cHTTPServer & a_HTTPServer) :
+	m_HTTPServer(a_HTTPServer),
+	m_State(wcsRecvHeaders),
+	m_CurrentRequest(nullptr),
+	m_CurrentRequestBodyRemaining(0)
+{
+	// LOGD("HTTP: New connection at %p", this);
+}
+
+
+
+
+
+cHTTPServerConnection::~cHTTPServerConnection()
+{
+	// LOGD("HTTP: Connection deleting: %p", this);
+	delete m_CurrentRequest;
+	m_CurrentRequest = nullptr;
+}
+
+
+
+
+
+void cHTTPServerConnection::SendStatusAndReason(int a_StatusCode, const AString & a_Response)
+{
+	SendData(Printf("HTTP/1.1 %d %s\r\n", a_StatusCode, a_Response.c_str()));
+	SendData(Printf("Content-Length: %u\r\n\r\n", static_cast<unsigned>(a_Response.size())));
+	SendData(a_Response.data(), a_Response.size());
+	m_State = wcsRecvHeaders;
+}
+
+
+
+
+
+void cHTTPServerConnection::SendNeedAuth(const AString & a_Realm)
+{
+	SendData(Printf("HTTP/1.1 401 Unauthorized\r\nWWW-Authenticate: Basic realm=\"%s\"\r\nContent-Length: 0\r\n\r\n", a_Realm.c_str()));
+	m_State = wcsRecvHeaders;
+}
+
+
+
+
+
+void cHTTPServerConnection::Send(const cHTTPResponse & a_Response)
+{
+	ASSERT(m_State == wcsRecvIdle);
+	AString toSend;
+	a_Response.AppendToData(toSend);
+	m_State = wcsSendingResp;
+	SendData(toSend);
+}
+
+
+
+
+
+void cHTTPServerConnection::Send(const void * a_Data, size_t a_Size)
+{
+	ASSERT(m_State == wcsSendingResp);
+	// We're sending in Chunked transfer encoding
+	SendData(Printf(SIZE_T_FMT_HEX "\r\n", a_Size));
+	SendData(a_Data, a_Size);
+	SendData("\r\n");
+}
+
+
+
+
+
+void cHTTPServerConnection::FinishResponse(void)
+{
+	ASSERT(m_State == wcsSendingResp);
+	SendData("0\r\n\r\n");
+	m_State = wcsRecvHeaders;
+}
+
+
+
+
+
+void cHTTPServerConnection::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":
+			SendData("HTTP/1.1 500 Internal Server Error\r\n\r\n");
+			m_State = wcsRecvHeaders;
+			break;
+		}
+
+		case wcsSendingResp:
+		{
+			// The response headers have been sent, we need to terminate the response body:
+			SendData("0\r\n\r\n");
+			m_State = wcsRecvHeaders;
+			break;
+		}
+
+		default:
+		{
+			ASSERT(!"Unhandled state recovery");
+			break;
+		}
+	}
+}
+
+
+
+
+
+void cHTTPServerConnection::Terminate(void)
+{
+	if (m_CurrentRequest != nullptr)
+	{
+		m_HTTPServer.RequestFinished(*this, *m_CurrentRequest);
+	}
+	m_Link.reset();
+}
+
+
+
+
+
+void cHTTPServerConnection::OnLinkCreated(cTCPLinkPtr a_Link)
+{
+	ASSERT(m_Link == nullptr);
+	m_Link = a_Link;
+}
+
+
+
+
+
+void cHTTPServerConnection::OnReceivedData(const char * a_Data, size_t a_Size)
+{
+	ASSERT(m_Link != nullptr);
+
+	switch (m_State)
+	{
+		case wcsRecvHeaders:
+		{
+			if (m_CurrentRequest == nullptr)
+			{
+				m_CurrentRequest = new cHTTPRequestParser;
+			}
+
+			size_t BytesConsumed = m_CurrentRequest->ParseHeaders(a_Data, a_Size);
+			if (BytesConsumed == AString::npos)
+			{
+				delete m_CurrentRequest;
+				m_CurrentRequest = nullptr;
+				m_State = wcsInvalid;
+				m_Link->Close();
+				m_Link.reset();
+				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)
+			{
+				cHTTPServerConnection::OnReceivedData(a_Data + BytesConsumed, a_Size - BytesConsumed);
+				return;
+			}
+			else
+			{
+				cHTTPServerConnection::OnReceivedData("", 0);  // If the request has zero body length, let it be processed right-away
+				return;
+			}
+		}
+
+		case wcsRecvBody:
+		{
+			ASSERT(m_CurrentRequest != nullptr);
+			if (m_CurrentRequestBodyRemaining > 0)
+			{
+				size_t BytesToConsume = std::min(m_CurrentRequestBodyRemaining, static_cast<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_Link->Close();
+					m_Link.reset();
+					return;
+				}
+				delete m_CurrentRequest;
+				m_CurrentRequest = nullptr;
+			}
+			break;
+		}
+
+		default:
+		{
+			// TODO: Should we be receiving data in this state?
+			break;
+		}
+	}
+}
+
+
+
+
+
+void cHTTPServerConnection::OnRemoteClosed(void)
+{
+	if (m_CurrentRequest != nullptr)
+	{
+		m_HTTPServer.RequestFinished(*this, *m_CurrentRequest);
+	}
+	m_Link.reset();
+}
+
+
+
+
+
+
+void cHTTPServerConnection::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
+{
+	OnRemoteClosed();
+}
+
+
+
+
+void cHTTPServerConnection::SendData(const void * a_Data, size_t a_Size)
+{
+	m_Link->Send(a_Data, a_Size);
+}
+
+
+
+