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-rw-r--r--source/HTTPServer/HTTPMessage.cpp285
-rw-r--r--source/HTTPServer/HTTPMessage.h121
-rw-r--r--source/HTTPServer/HTTPServer.cpp267
-rw-r--r--source/HTTPServer/HTTPServer.h135
4 files changed, 808 insertions, 0 deletions
diff --git a/source/HTTPServer/HTTPMessage.cpp b/source/HTTPServer/HTTPMessage.cpp
new file mode 100644
index 000000000..b784cb941
--- /dev/null
+++ b/source/HTTPServer/HTTPMessage.cpp
@@ -0,0 +1,285 @@
+
+// HTTPMessage.cpp
+
+// Declares the cHTTPMessage class representing the common ancestor for HTTP request and response classes
+
+#include "Globals.h"
+#include "HTTPMessage.h"
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cHTTPMessage:
+
+cHTTPMessage::cHTTPMessage(eKind a_Kind) :
+ m_Kind(a_Kind)
+{
+}
+
+
+
+
+
+void cHTTPMessage::AddHeader(const AString & a_Key, const AString & a_Value)
+{
+ cNameValueMap::iterator itr = m_Headers.find(a_Key);
+ if (itr == m_Headers.end())
+ {
+ m_Headers[a_Key] = a_Value;
+ }
+ else
+ {
+ // The header-field key is specified multiple times, combine into comma-separated list (RFC 2616 @ 4.2)
+ itr->second.append(", ");
+ itr->second.append(a_Value);
+ }
+
+ // Special processing for well-known headers:
+ if (a_Key == "Content-Type")
+ {
+ m_ContentType = m_Headers["Content-Type"];
+ }
+ else if (a_Key == "Content-Length")
+ {
+ m_ContentLength = atoi(m_Headers["Content-Length"].c_str());
+ }
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cHTTPRequest:
+
+cHTTPRequest::cHTTPRequest(void) :
+ super(mkRequest)
+{
+}
+
+
+
+
+
+bool cHTTPRequest::ParseHeaders(const char * a_IncomingData, size_t a_IdxEnd)
+{
+ // The first line contains the method and the URL:
+ size_t Next = ParseRequestLine(a_IncomingData, a_IdxEnd);
+ if (Next == AString::npos)
+ {
+ return false;
+ }
+
+ // The following lines contain headers:
+ AString Key;
+ const char * Data = a_IncomingData + Next;
+ size_t End = a_IdxEnd - Next;
+ while (End > 0)
+ {
+ Next = ParseHeaderField(Data, End, Key);
+ if (Next == AString::npos)
+ {
+ return false;
+ }
+ ASSERT(End >= Next);
+ Data += Next;
+ End -= Next;
+ }
+
+ return HasReceivedContentLength();
+}
+
+
+
+
+size_t cHTTPRequest::ParseRequestLine(const char * a_Data, size_t a_IdxEnd)
+{
+ // Ignore the initial CRLFs (HTTP spec's "should")
+ size_t LineStart = 0;
+ while (
+ (LineStart < a_IdxEnd) &&
+ (
+ (a_Data[LineStart] == '\r') ||
+ (a_Data[LineStart] == '\n')
+ )
+ )
+ {
+ LineStart++;
+ }
+ if (LineStart >= a_IdxEnd)
+ {
+ return AString::npos;
+ }
+
+ size_t Last = LineStart;
+ int NumSpaces = 0;
+ for (size_t i = LineStart; i < a_IdxEnd; i++)
+ {
+ switch (a_Data[i])
+ {
+ case ' ':
+ {
+ switch (NumSpaces)
+ {
+ case 0:
+ {
+ m_Method.assign(a_Data, Last, i - Last - 1);
+ break;
+ }
+ case 1:
+ {
+ m_URL.assign(a_Data, Last, i - Last - 1);
+ break;
+ }
+ default:
+ {
+ // Too many spaces in the request
+ return AString::npos;
+ }
+ }
+ Last = i + 1;
+ NumSpaces += 1;
+ break;
+ }
+ case '\n':
+ {
+ if ((i == 0) || (a_Data[i] != '\r') || (NumSpaces != 2) || (i < Last + 7))
+ {
+ // LF too early, without a CR, without two preceeding spaces or too soon after the second space
+ return AString::npos;
+ }
+ // Check that there's HTTP/version at the end
+ if (strncmp(a_Data + Last, "HTTP/1.", 7) != 0)
+ {
+ return AString::npos;
+ }
+ return i;
+ }
+ } // switch (a_Data[i])
+ } // for i - a_Data[]
+ return AString::npos;
+}
+
+
+
+
+
+size_t cHTTPRequest::ParseHeaderField(const char * a_Data, size_t a_IdxEnd, AString & a_Key)
+{
+ if (*a_Data <= ' ')
+ {
+ size_t res = ParseHeaderFieldContinuation(a_Data + 1, a_IdxEnd - 1, a_Key);
+ return (res == AString::npos) ? res : (res + 1);
+ }
+ size_t ValueIdx = 0;
+ AString Key;
+ for (size_t i = 0; i < a_IdxEnd; i++)
+ {
+ switch (a_Data[i])
+ {
+ case '\n':
+ {
+ if ((ValueIdx == 0) || (i < ValueIdx - 2) || (i == 0) || (a_Data[i - 1] != '\r'))
+ {
+ // Invalid header field - no colon or no CR before LF
+ return AString::npos;
+ }
+ AString Value(a_Data, ValueIdx + 1, i - ValueIdx - 2);
+ AddHeader(Key, Value);
+ a_Key = Key;
+ return i + 1;
+ }
+ case ':':
+ {
+ if (ValueIdx == 0)
+ {
+ Key.assign(a_Data, 0, i);
+ ValueIdx = i;
+ }
+ break;
+ }
+ case ' ':
+ case '\t':
+ {
+ if (ValueIdx == i - 1)
+ {
+ // Value has started in this char, but it is whitespace, so move the start one char further
+ ValueIdx = i;
+ }
+ }
+ } // switch (char)
+ } // for i - m_IncomingHeaderData[]
+ // No header found, return the end-of-data index:
+ return a_IdxEnd;
+}
+
+
+
+
+
+size_t cHTTPRequest::ParseHeaderFieldContinuation(const char * a_Data, size_t a_IdxEnd, AString & a_Key)
+{
+ size_t Start = 0;
+ for (size_t i = 0; i < a_IdxEnd; i++)
+ {
+ if ((a_Data[i] > ' ') && (Start == 0))
+ {
+ Start = i;
+ }
+ else if (a_Data[i] == '\n')
+ {
+ if ((i == 0) || (a_Data[i - 1] != '\r'))
+ {
+ // There wasn't a CR before this LF
+ return AString::npos;
+ }
+ AString Value(a_Data, 0, i - Start - 1);
+ AddHeader(a_Key, Value);
+ return i + 1;
+ }
+ }
+ // LF not found, how? We found it at the header end (CRLFCRLF)
+ ASSERT(!"LF not found, wtf?");
+ return AString::npos;
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cHTTPResponse:
+
+cHTTPResponse::cHTTPResponse(void) :
+ super(mkResponse)
+{
+}
+
+
+
+
+
+void cHTTPResponse::AppendToData(AString & a_DataStream) const
+{
+ a_DataStream.append("200 OK\r\nTransfer-Encoding: chunked\r\nContent-Type: ");
+ a_DataStream.append(m_ContentType);
+ a_DataStream.append("\r\n");
+ for (cNameValueMap::const_iterator itr = m_Headers.begin(), end = m_Headers.end(); itr != end; ++itr)
+ {
+ if ((itr->first == "Content-Type") || (itr->first == "Content-Length"))
+ {
+ continue;
+ }
+ a_DataStream.append(itr->first);
+ a_DataStream.append(": ");
+ a_DataStream.append(itr->second);
+ a_DataStream.append("\r\n");
+ } // for itr - m_Headers[]
+ a_DataStream.append("\r\n");
+}
+
+
+
+
diff --git a/source/HTTPServer/HTTPMessage.h b/source/HTTPServer/HTTPMessage.h
new file mode 100644
index 000000000..a3c4f96d1
--- /dev/null
+++ b/source/HTTPServer/HTTPMessage.h
@@ -0,0 +1,121 @@
+
+// HTTPMessage.h
+
+// Declares the cHTTPMessage class representing the common ancestor for HTTP request and response classes
+
+
+
+
+
+#pragma once
+
+
+
+
+
+class cHTTPMessage
+{
+public:
+ enum
+ {
+ HTTP_OK = 200,
+ HTTP_BAD_REQUEST = 400,
+ } ;
+
+ enum eKind
+ {
+ mkRequest,
+ mkResponse,
+ } ;
+
+ cHTTPMessage(eKind a_Kind);
+
+ /// Adds a header into the internal map of headers. Recognizes special headers: Content-Type and Content-Length
+ void AddHeader(const AString & a_Key, const AString & a_Value);
+
+ void SetContentType (const AString & a_ContentType) { m_ContentType = a_ContentType; }
+ void SetContentLength(int a_ContentLength) { m_ContentLength = a_ContentLength; }
+
+ const AString & GetContentType (void) const { return m_ContentType; }
+ int GetContentLength(void) const { return m_ContentLength; }
+
+protected:
+ typedef std::map<AString, AString> cNameValueMap;
+
+ eKind m_Kind;
+
+ cNameValueMap m_Headers;
+
+ /// Type of the content; parsed by AddHeader(), set directly by SetContentLength()
+ AString m_ContentType;
+
+ /// Length of the content that is to be received. -1 when the object is created, parsed by AddHeader() or set directly by SetContentLength()
+ int m_ContentLength;
+} ;
+
+
+
+
+
+class cHTTPRequest :
+ public cHTTPMessage
+{
+ typedef cHTTPMessage super;
+
+public:
+ cHTTPRequest(void);
+
+ /// Parses the headers information from the received data in the specified string of incoming data. Returns true if successful.
+ bool ParseHeaders(const char * a_IncomingData, size_t a_idxEnd);
+
+ /// Returns true if the request did contain a Content-Length header
+ bool HasReceivedContentLength(void) const { return (m_ContentLength >= 0); }
+
+protected:
+ /// Method of the request (GET / PUT / POST / ...)
+ AString m_Method;
+
+ /// Full URL of the request
+ AString m_URL;
+
+ /// Number of bytes that remain to read for the complete body of the message to be received
+ int m_BodyRemaining;
+
+ /** Parses the RequestLine out of a_Data, up to index a_IdxEnd
+ Returns the index to the next line, or npos if invalid request
+ */
+ size_t ParseRequestLine(const char * a_Data, size_t a_IdxEnd);
+
+ /** Parses one header field out of a_Data, up to offset a_IdxEnd.
+ Returns the index to the next line (relative to a_Data), or npos if invalid request.
+ a_Key is set to the key that was parsed (used for multi-line headers)
+ */
+ size_t ParseHeaderField(const char * a_Data, size_t a_IdxEnd, AString & a_Key);
+
+ /** Parses one header field that is known to be a continuation of previous header.
+ Returns the index to the next line, or npos if invalid request.
+ */
+ size_t ParseHeaderFieldContinuation(const char * a_Data, size_t a_IdxEnd, AString & a_Key);
+} ;
+
+
+
+
+
+class cHTTPResponse :
+ public cHTTPMessage
+{
+ typedef cHTTPMessage super;
+
+public:
+ cHTTPResponse(void);
+
+ /** Appends the response to the specified datastream - response line and headers.
+ The body will be sent later directly through cConnection::Send()
+ */
+ void AppendToData(AString & a_DataStream) const;
+} ;
+
+
+
+
diff --git a/source/HTTPServer/HTTPServer.cpp b/source/HTTPServer/HTTPServer.cpp
new file mode 100644
index 000000000..e68032bc2
--- /dev/null
+++ b/source/HTTPServer/HTTPServer.cpp
@@ -0,0 +1,267 @@
+
+// HTTPServer.cpp
+
+// Implements the cHTTPServer class representing a HTTP webserver that uses cListenThread and cSocketThreads for processing
+
+#include "Globals.h"
+#include "HTTPServer.h"
+#include "HTTPMessage.h"
+
+
+
+
+
+// Disable MSVC warnings:
+#if defined(_MSC_VER)
+ #pragma warning(push)
+ #pragma warning(disable:4355) // 'this' : used in base member initializer list
+#endif
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cHTTPConnection:
+
+cHTTPConnection::cHTTPConnection(cHTTPServer & a_HTTPServer) :
+ m_HTTPServer(a_HTTPServer),
+ m_State(wcsRecvHeaders),
+ m_CurrentRequest(NULL)
+{
+}
+
+
+
+
+void cHTTPConnection::SendStatusAndReason(int a_StatusCode, const AString & a_Response)
+{
+ AppendPrintf(m_OutgoingData, "%d %s\r\n\r\n", a_StatusCode, a_Response.c_str());
+}
+
+
+
+
+
+void cHTTPConnection::Send(const cHTTPResponse & a_Response)
+{
+ ASSERT(m_State = wcsRecvIdle);
+ a_Response.AppendToData(m_OutgoingData);
+ m_State = wcsSendingResp;
+}
+
+
+
+
+
+void cHTTPConnection::Send(const void * a_Data, int a_Size)
+{
+ ASSERT(m_State == wcsSendingResp);
+ AppendPrintf(m_OutgoingData, "%x\r\n", a_Size);
+ m_OutgoingData.append((const char *)a_Data, a_Size);
+}
+
+
+
+
+
+void cHTTPConnection::FinishResponse(void)
+{
+ ASSERT(m_State == wcsSendingResp);
+ m_OutgoingData.append("0\r\n");
+ m_State = wcsRecvHeaders;
+}
+
+
+
+
+
+void cHTTPConnection::DataReceived(const char * a_Data, int a_Size)
+{
+ switch (m_State)
+ {
+ case wcsRecvHeaders:
+ {
+ ASSERT(m_CurrentRequest == NULL);
+
+ // Start searching 3 chars from the end of the already received data, if available:
+ size_t SearchStart = m_IncomingHeaderData.size();
+ SearchStart = (SearchStart > 3) ? SearchStart - 3 : 0;
+
+ m_IncomingHeaderData.append(a_Data, a_Size);
+
+ // Parse the header, if it is complete:
+ size_t idxEnd = m_IncomingHeaderData.find("\r\n\r\n", SearchStart);
+ if (idxEnd == AString::npos)
+ {
+ return;
+ }
+ m_CurrentRequest = new cHTTPRequest;
+ if (!m_CurrentRequest->ParseHeaders(m_IncomingHeaderData.c_str(), idxEnd + 2))
+ {
+ delete m_CurrentRequest;
+ m_CurrentRequest = NULL;
+ m_State = wcsInvalid;
+ m_HTTPServer.CloseConnection(*this);
+ return;
+ }
+ m_State = wcsRecvBody;
+ m_HTTPServer.NewRequest(*this, *m_CurrentRequest);
+
+ // Process the rest of the incoming data into the request body:
+ if (m_IncomingHeaderData.size() > idxEnd + 4)
+ {
+ m_IncomingHeaderData.erase(0, idxEnd + 4);
+ DataReceived(m_IncomingHeaderData.c_str(), m_IncomingHeaderData.size());
+ }
+ break;
+ }
+
+ case wcsRecvBody:
+ {
+ ASSERT(m_CurrentRequest != NULL);
+ // TODO: Receive the body, and the next request (If HTTP/1.1 keepalive)
+ 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);
+ }
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cHTTPServer:
+
+cHTTPServer::cHTTPServer(void) :
+ m_ListenThreadIPv4(*this, cSocket::IPv4, "WebServer IPv4"),
+ m_ListenThreadIPv6(*this, cSocket::IPv6, "WebServer IPv6"),
+ m_SocketThreads()
+{
+}
+
+
+
+
+
+bool cHTTPServer::Initialize(cIniFile & a_IniFile)
+{
+ if (!a_IniFile.GetValueSetB("WebAdmin", "Enabled", false))
+ {
+ // The WebAdmin is disabled
+ return true;
+ }
+ bool HasAnyPort;
+ HasAnyPort = m_ListenThreadIPv4.Initialize(a_IniFile.GetValueSet("WebAdmin", "Port", "8081"));
+ HasAnyPort = m_ListenThreadIPv6.Initialize(a_IniFile.GetValueSet("WebAdmin", "PortsIPv6", "8082, 3300")) || HasAnyPort;
+ if (!HasAnyPort)
+ {
+ LOG("WebAdmin is disabled");
+ return false;
+ }
+ if (!m_ListenThreadIPv4.Start())
+ {
+ return false;
+ }
+ if (!m_ListenThreadIPv6.Start())
+ {
+ m_ListenThreadIPv4.Stop();
+ return false;
+ }
+ return true;
+}
+
+
+
+
+
+void cHTTPServer::OnConnectionAccepted(cSocket & a_Socket)
+{
+ cHTTPConnection * Connection = new cHTTPConnection(*this);
+ m_SocketThreads.AddClient(a_Socket, Connection);
+ cCSLock Lock(m_CSConnections);
+ m_Connections.push_back(Connection);
+}
+
+
+
+
+
+void cHTTPServer::CloseConnection(cHTTPConnection & a_Connection)
+{
+ m_SocketThreads.RemoveClient(&a_Connection);
+ cCSLock Lock(m_CSConnections);
+ for (cHTTPConnections::iterator itr = m_Connections.begin(), end = m_Connections.end(); itr != end; ++itr)
+ {
+ if (*itr == &a_Connection)
+ {
+ m_Connections.erase(itr);
+ break;
+ }
+ }
+}
+
+
+
+
+
+void cHTTPServer::NewRequest(cHTTPConnection & a_Connection, cHTTPRequest & a_Request)
+{
+ // TODO
+}
+
+
+
+
+
+void cHTTPServer::RequestBody(cHTTPConnection & a_Connection, cHTTPRequest & a_Request)
+{
+ // TODO
+}
+
+
+
+
+
+void cHTTPServer::RequestFinished(cHTTPConnection & a_Connection, cHTTPRequest & a_Request)
+{
+ // TODO
+
+ // DEBUG: Send a debug response:
+ cHTTPResponse Resp;
+ Resp.SetContentType("text/plain");
+ a_Connection.Send(Resp);
+ a_Connection.Send("Hello");
+ a_Connection.FinishResponse();
+}
+
+
+
+
diff --git a/source/HTTPServer/HTTPServer.h b/source/HTTPServer/HTTPServer.h
new file mode 100644
index 000000000..9287a79e8
--- /dev/null
+++ b/source/HTTPServer/HTTPServer.h
@@ -0,0 +1,135 @@
+
+// HTTPServer.h
+
+// Declares the cHTTPServer class representing a HTTP webserver that uses cListenThread and cSocketThreads for processing
+
+
+
+
+
+#pragma once
+
+#include "../OSSupport/ListenThread.h"
+#include "../OSSupport/SocketThreads.h"
+#include "../../iniFile/iniFile.h"
+
+
+
+
+
+// fwd:
+class cHTTPServer;
+class cHTTPMessage;
+class cHTTPRequest;
+class cHTTPResponse;
+
+
+
+
+
+class cHTTPConnection :
+ public cSocketThreads::cCallback
+{
+public:
+
+ enum eState
+ {
+ wcsRecvHeaders, ///< Receiving request headers (m_CurrentRequest == NULL)
+ wcsRecvBody, ///< Receiving request body (m_CurrentRequest is valid)
+ wcsRecvIdle, ///< Has received the entire body, waiting to send the response (m_CurrentRequest == NULL)
+ wcsSendingResp, ///< Sending response body (m_CurrentRequest == NULL)
+ wcsInvalid, ///< The request was malformed, the connection is closing
+ } ;
+
+ cHTTPConnection(cHTTPServer & a_HTTPServer);
+
+ /// Sends HTTP status code together with a_Reason (used for HTTP errors)
+ void SendStatusAndReason(int a_StatusCode, const AString & a_Reason);
+
+ /// Sends the headers contained in a_Response
+ void Send(const cHTTPResponse & a_Response);
+
+ /// Sends the data as the response (may be called multiple times)
+ void Send(const void * a_Data, int a_Size);
+
+ /// Sends the data as the response (may be called multiple times)
+ void Send(const AString & a_Data) { Send(a_Data.data(), a_Data.size()); }
+
+ /// Finishes sending current response, gets ready for receiving another request (HTTP 1.1 keepalive)
+ void FinishResponse(void);
+
+protected:
+ typedef std::map<AString, AString> cNameValueMap;
+
+ /// The parent webserver that is to be notified of events on this connection
+ cHTTPServer & m_HTTPServer;
+
+ /// All the incoming data until the entire request header is parsed
+ AString m_IncomingHeaderData;
+
+ /// Status in which the request currently is
+ eState m_State;
+
+ /// Data that is queued for sending, once the socket becomes writable
+ AString m_OutgoingData;
+
+ /// The request being currently received (valid only between having parsed the headers and finishing receiving the body)
+ cHTTPRequest * m_CurrentRequest;
+
+
+ /// Parses the header in m_IncomingData until the specified end mark
+ void ParseHeader(size_t a_IdxEnd);
+
+ /// Sends the response status and headers. Transition from wrsRecvBody to wrsSendingResp.
+ void SendRespHeaders(void);
+
+ // cSocketThreads::cCallback overrides:
+ virtual void DataReceived (const char * a_Data, int a_Size) override; // Data is received from the client
+ virtual void GetOutgoingData(AString & a_Data) override; // Data can be sent to client
+ virtual void SocketClosed (void) override; // The socket has been closed for any reason
+} ;
+
+typedef std::vector<cHTTPConnection *> cHTTPConnections;
+
+
+
+
+class cHTTPServer :
+ public cListenThread::cCallback
+{
+public:
+ cHTTPServer(void);
+
+ bool Initialize(cIniFile & a_IniFile);
+
+protected:
+ friend class cHTTPConnection;
+
+ cListenThread m_ListenThreadIPv4;
+ cListenThread m_ListenThreadIPv6;
+
+ cSocketThreads m_SocketThreads;
+
+ cCriticalSection m_CSConnections;
+ cHTTPConnections m_Connections; ///< All the connections that are currently being serviced
+
+ // cListenThread::cCallback overrides:
+ virtual void OnConnectionAccepted(cSocket & a_Socket) override;
+
+ /// Called by cHTTPConnection to close the connection (presumably due to an error)
+ void CloseConnection(cHTTPConnection & a_Connection);
+
+ /// Called by cHTTPConnection when it finishes parsing the request header
+ void NewRequest(cHTTPConnection & a_Connection, cHTTPRequest & a_Request);
+
+ /// Called by cHTTPConenction when it receives more data for the request body
+ void RequestBody(cHTTPConnection & a_Connection, cHTTPRequest & a_Request);
+
+ /// Called by cHTTPConnection when it detects that the request has finished (all of its body has been received)
+ void RequestFinished(cHTTPConnection & a_Connection, cHTTPRequest & a_Request);
+} ;
+
+
+
+
+