HTTPRequestHandler.h

00001 
00002 /*
00003 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
00004  
00005 Permission is hereby granted, free of charge, to any person obtaining a copy
00006 of this software and associated documentation files (the "Software"), to deal
00007 in the Software without restriction, including without limitation the rights
00008 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 copies of the Software, and to permit persons to whom the Software is
00010 furnished to do so, subject to the following conditions:
00011  
00012 The above copyright notice and this permission notice shall be included in
00013 all copies or substantial portions of the Software.
00014  
00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 THE SOFTWARE.
00022 */
00023 
00024 /**
00025 HTTP Request Handler header file.
00026 */
00027 
00028 #ifndef HTTP_REQUEST_HANDLER_H
00029 #define HTTP_REQUEST_HANDLER_H
00030 
00031 //*#include "api/TCPSocket.h"
00032 //#include "HTTPServer.h"
00033 
00034 #include "mbed.h"
00035 #include "EthernetInterface.h"
00036 //*#include "core/netservice.h"
00037 
00038 #include <string>
00039 using std::string;
00040 
00041 #include <map>
00042 using std::map;
00043 
00044 ///HTTP Server's generic request handler
00045 class HTTPRequestHandler //*: public NetService
00046 {
00047 public:
00048   ///Instantiated by the HTTP Server
00049  HTTPRequestHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocketConnection);
00050   virtual ~HTTPRequestHandler();
00051 
00052 //protected:
00053   virtual void doGet() = 0;
00054   virtual void doPost() = 0;
00055   virtual void doHead() = 0;
00056   
00057   virtual void onReadable() = 0; //Data has been read
00058   virtual void onWriteable() = 0; //Data has been written & buf is free
00059   virtual void onTimeout(); //Connection has timed out
00060   virtual void onClose() = 0; //Connection is closing
00061   
00062   virtual void close (); //Close socket and destroy data
00063 
00064 protected:  
00065   map<string, string>& reqHeaders() /*const*/;
00066   string& path() /*const*/;
00067   int dataLen() const;
00068   int readData(char* buf, int len);
00069   string& rootPath() /*const*/;
00070   
00071   void setErrCode(int errc);
00072   void setContentLen(int len);
00073   
00074   map<string, string>& respHeaders();
00075   int writeData(const char* buf, int len);
00076   
00077 //* void setTimeout(int ms);
00078 //*  void resetTimeout();
00079 
00080 private:
00081   void readHeaders(); //Called at instanciation
00082   void writeHeaders(); //Called at the first writeData call
00083   //**void onTCPSocketEvent(/**TCPSocketEvent e**/);
00084    
00085   TCPSocket* m_pTCPSocketConnection;
00086   map<string, string> m_reqHeaders;
00087   map<string, string> m_respHeaders;
00088   string m_rootPath;
00089   string m_path;
00090   int m_errc; //Response code
00091   
00092 //*  Timeout m_watchdog;
00093 //*  int m_timeout;
00094   
00095   bool m_closed;
00096   bool m_headersSent;
00097   
00098   int readLine(char* str, int maxLen);
00099 
00100   typedef struct {
00101     uint32_t size;  // size of buffer (1024)
00102     uint32_t num;   // number of characters in buffer
00103     uint32_t pos;   // next position to read
00104     char buff[1024];
00105   } read_cache_t;
00106 
00107   int readLineCached(char* str, int maxLen, read_cache_t* cache);
00108 
00109 };
00110 
00111 #endif