/////////////////////////////////////////////////////////////////////////// httpapi.h//// External API header file for http protocol/////////////////////////////////////////////////////////////////////////#ifndef _HTTPAPI_H_#define _HTTPAPI_H_#include <stdio.h>#include <string.h>#include <stdlib.h>#include <fcntl.h>#include <time.h>#define VER_MAJOR 0#define VER_MINOR 7#ifndef min#define min(x,y) (x>y?y:x)#endif#ifndef NODEBUG#define DEBUG printf#else#define DEBUG#endif#define SYSLOG fprintf#define LOG_ERR 1#define ASSERT#define GETDWORD(ptrData) (*(DWORD*)(ptrData))#define SETDWORD(ptrData,data) (*(DWORD*)(ptrData)=data)#define GETWORD(ptrData) (*(WORD*)(ptrData))#define SETWORD(ptrData,data) (*(WORD*)(ptrData)=data)#ifndef BIG_ENDINE#define DEFDWORD(char1,char2,char3,char4) (char1+(char2<<8)+(char3<<16)+(char4<<24))#define DEFWORD(char1,char2) (char1+(char2<<8))#else#define DEFDWORD(char1,char2,char3,char4) (char4+(char3<<8)+(char2<<16)+(char1<<24))#define DEFWORD(char1,char2) (char2+(char1<<8))#endif///////////////////////////////////////////////////////////////////////// Public definitions///////////////////////////////////////////////////////////////////////// file typestypedef enum {  HTTPFILETYPE_HTML=0,  HTTPFILETYPE_TEXT,  HTTPFILETYPE_GIF,  HTTPFILETYPE_JPEG,  HTTPFILETYPE_PNG,  HTTPFILETYPE_CSS,  HTTPFILETYPE_SWF,  HTTPFILETYPE_MPA,  HTTPFILETYPE_MPEG,  HTTPFILETYPE_JS,  HTTPFILETYPE_OCTET,  HTTPFILETYPE_STREAM,} HttpFileType;#define MAXPOSTPARAMS 50#define MAXPOSTREDIRECTFILENAME (200)/////////////////////////////////////////////////////////////////////////////// typedefs/////////////////////////////////////////////////////////////////////////////typedef struct _tagPostParam {  //  char* pchPageName;  struct {    char* pchParamName;    char* pchParamValue;  } stParams[MAXPOSTPARAMS];  int iNumParams;  char chFilename[MAXPOSTREDIRECTFILENAME];} PostParam;// multipart file upload post (per socket) structuretypedef struct {  char pchBoundaryValue[80];  OCTET oFileuploadStatus;  int iWriteLocation;  PostParam pp;  char *pchFilename;} HttpMultipart;typedef struct _tagSubstParam {  char* pchParamName;  char* pchParamValue;	// returned  int iMaxValueBytes;} SubstParam;#define FLAG_REQUEST_GET	0x1#define FLAG_REQUEST_POST	0x2#define FLAG_CONN_CLOSE		0x10#define FLAG_SUBST			0x20#define FLAG_AUTHENTICATION	0x40#define FLAG_MORE_CONTENT	0x80#define FLAG_TO_FREE		0x100#define FLAG_DATA_FILE		0x10000#define FLAG_DATA_RAW		0x20000#define FLAG_DATA_PIPE		0x40000#define FLAG_DATA_STREAM	0x80000#define FLAG_RECEIVING		0x80000000#define FLAG_SENDING		0x40000000#define SETFLAG(hs,bit) (hs->flags|=(bit));#define CLRFLAG(hs,bit) (hs->flags&=~(bit));#define ISFLAGSET(hs,bit) ((hs->flags&(bit)))typedef union {	unsigned long laddr;	unsigned short saddr[2];	unsigned char caddr[4];} IP;typedef struct {	IP ipAddr;	int iStartByte;	unsigned char *pucPath;	short int ofReferer;	short int ofHost;	short int siHeaderSize;#ifdef HTTPPOST	unsigned char* pucPayload;#endif} HttpRequest;typedef struct {	int iSentBytes;	int iContentLength;	HttpFileType fileType;	short int iBufferSize;			// the size of buffer pucData pointing to} HttpResponse;typedef struct {	char *name;	char *value;} HttpVariables;typedef struct {	void* hp;	unsigned char *pucRequest;	HttpVariables* pxVars;	int iVarCount;	unsigned char *pucHeader;	HttpRequest *request;	unsigned char *pucBuffer;	int iDataBytes;	int iContentBytes;	int iSentBytes;	HttpFileType fileType;} UrlHandlerParam;// Callback function protostypedef int (*PFNPOSTCALLBACK)(PostParam*);typedef int (*PFNSUBSTCALLBACK)(SubstParam*);typedef int (*PFNFILEUPLOADCALLBACK)(char*, OCTET, OCTET*, DWORD);typedef int (*PFNURLCALLBACK)(UrlHandlerParam*);typedef int (*PFNURLINIT)(void* hp, int uninit);typedef struct {	char* pchUrlPrefix;	PFNURLCALLBACK pfnUrlHandler;	PFNURLINIT pfnUrlHandlerInit;} UrlHandler;typedef struct {	time_t startTime;	int clientCount;	int clientCountMax;	int reqCount;	int reqGetCount;	int fileSentCount;	int fileSentBytes;	int varSubstCount;	int urlProcessCount;	int timeOutCount;#ifdef HTTPAUTH	int authFailCount;#endif#ifdef HTTPPOST	int reqPostCount;	int fileUploadCount;#endif} HttpStats;#define HTTP_BUFFER_SIZE (4*1024 /*bytes*/)// per connection/socket structuretypedef struct _HttpSocket{	struct _HttpSocket *next;	SOCKET socket;	int fd;	HttpRequest request;	HttpResponse response;	unsigned char *pucData;	int iDataLength;	unsigned long flags;	void* ptr;	time_t tmAcceptTime;	time_t tmExpirationTime;	unsigned short siRequestCount;	unsigned short ucReserved;	unsigned char buffer[HTTP_BUFFER_SIZE];} HttpSocket;#define FLAG_DIR_LISTING 1typedef struct _httpParam {	HttpSocket *phsSocketHead;				/* head of the socket linked list */	int   bKillWebserver; 	int   bWebserverRunning; 	unsigned int flags;	SOCKET listenSocket;	unsigned short int siHttpPort;	unsigned short int siMaxReqPerConn;		/* maximum requests on one connection */	unsigned short int siMaxClients;	unsigned short int siSocketRcvBufSize;	/* socket receive buffer size in KB */	char *pchWebPath;	UrlHandler *pxUrlHandler;		/* pointer to URL handler array */	// substitution callback	PFNSUBSTCALLBACK pfnSubst;#ifdef HTTPPOST	// post callbacks	PFNFILEUPLOADCALLBACK pfnFileUpload;	PFNPOSTCALLBACK pfnPost;#endif#ifdef HTTPAUTH	DWORD dwAuthenticatedNode;	time_t tmAuthExpireTime;#endif	#ifndef NOTHREAD	pthread_t tidHttpThread;	#endif	HttpStats stats;} HttpParam;typedef struct {	char* pchRootPath;	char* pchHttpPath;	char cFilePath[MAX_PATH];	char* pchExt;	int fTailSlash;} HttpFilePath;///////////////////////////////////////////////////////////////////////// Return codes///////////////////////////////////////////////////////////////////////// for post callback#define WEBPOST_OK                (0)#define WEBPOST_AUTHENTICATED     (1)#define WEBPOST_NOTAUTHENTICATED  (2)#define WEBPOST_AUTHENTICATIONON  (3)#define WEBPOST_AUTHENTICATIONOFF (4)// for multipart file uploads#define HTTPUPLOAD_MORECHUNKS     (0)#define HTTPUPLOAD_FIRSTCHUNK     (1)#define HTTPUPLOAD_LASTCHUNK      (2)///////////////////////////////////////////////////////////////////////// Public functions//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// mwServerStart. Startup the webserver///////////////////////////////////////////////////////////////////////int mwServerStart(HttpParam* hp);///////////////////////////////////////////////////////////////////////// mwServerShutdown. Shutdown the webserver (closes connections and// releases resources)///////////////////////////////////////////////////////////////////////int mwServerShutdown(HttpParam* hp);///////////////////////////////////////////////////////////////////////// mwSetRcvBufSize. Change the TCP windows size of acceped sockets///////////////////////////////////////////////////////////////////////int mwSetRcvBufSize(WORD wSize);///////////////////////////////////////////////////////////////////////// mwPostRegister. Specify the callback to be called when a POST is// recevied.///////////////////////////////////////////////////////////////////////PFNPOSTCALLBACK mwPostRegister(PFNPOSTCALLBACK);///////////////////////////////////////////////////////////////////////// mwFileUploadRegister. Specify the callback to be called whenever the // server has the next data chunk available from a multipart file upload.///////////////////////////////////////////////////////////////////////PFNFILEUPLOADCALLBACK mwFileUploadRegister(PFNFILEUPLOADCALLBACK);///////////////////////////////////////////////////////////////////////// Default subst, post and file-upload callback processing///////////////////////////////////////////////////////////////////////int DefaultWebSubstCallback(SubstParam* sp);int DefaultWebPostCallback(PostParam* pp);int DefaultWebFileUploadCallback(char *pchFilename,                                 OCTET oFileuploadStatus,                                 OCTET *poData,                                  DWORD dwDataChunkSize);int mwGetHttpDateTime(time_t tm, char *buf);int mwGetLocalFileName(HttpFilePath* hfp);char* mwGetVarValue(HttpVariables* vars, char *varname);#endif // _HTTPAPI_H////////////////////////// END OF FILE ////////////////////////////////