/*

       httpext.h - Header for ISAPI extensions.

       This file is part of a free library for the Win32 API.

       This library is distributed in the hope that it will be useful,

       but WITHOUT ANY WARRANTY; without even the implied warranty of

       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

*/

#ifndef _HTTPEXT_H

#define _HTTPEXT_H

#if __GNUC__ >=3

#pragma GCC system_header

#endif

#include <windows.h>

#ifdef __cplusplus

extern "C" {

#endif

#define	HSE_VERSION_MAJOR	2

#define	HSE_VERSION_MINOR	0

#define	HSE_LOG_BUFFER_LEN	80

#define	HSE_MAX_EXT_DLL_NAME_LEN	256

#define	HSE_STATUS_SUCCESS	1

#define	HSE_STATUS_SUCCESS_AND_KEEP_CONN	2

#define	HSE_STATUS_PENDING	3

#define	HSE_STATUS_ERROR	4

#define	HSE_REQ_BASE	0

#define	HSE_REQ_SEND_URL_REDIRECT_RESP	1

#define	HSE_REQ_SEND_URL	2

#define	HSE_REQ_SEND_RESPONSE_HEADER	3

#define	HSE_REQ_DONE_WITH_SESSION	4

#define	HSE_REQ_SEND_RESPONSE_HEADER_EX	1016

#define	HSE_REQ_END_RESERVED	1000

#define	HSE_TERM_ADVISORY_UNLOAD	0x00000001

#define	HSE_TERM_MUST_UNLOAD	0x00000002

#define	HSE_IO_SYNC	0x00000001

#define	HSE_IO_ASYNC	0x00000002

#define	HSE_IO_DISCONNECT_AFTER_SEND	0x00000004

#define	HSE_IO_SEND_HEADERS	0x00000008

typedef	LPVOID HCONN;

typedef	struct _HSE_VERSION_INFO {

	DWORD	dwExtensionVersion;

	CHAR	lpszExtensionDesc[HSE_MAX_EXT_DLL_NAME_LEN];

} HSE_VERSION_INFO, *LPHSE_VERSION_INFO;

typedef	struct _EXTENSION_CONTROL_BLOCK	{

	DWORD	cbSize;

	DWORD	dwVersion;

	HCONN	ConnID;

	DWORD	dwHttpStatusCode;

	CHAR	lpszLogData[HSE_LOG_BUFFER_LEN];

	LPSTR	lpszMethod;

	LPSTR	lpszQueryString;

	LPSTR	lpszPathInfo;

	LPSTR	lpszPathTranslated;

	DWORD	cbTotalBytes;

	DWORD	cbAvailable;

	LPBYTE	lpbData;

	LPSTR	lpszContentType;

	BOOL	(PASCAL	*GetServerVariable)(HCONN,LPSTR,LPVOID,LPDWORD);

	BOOL	(PASCAL	*WriteClient)(HCONN,LPVOID,LPDWORD,DWORD);

	BOOL	(PASCAL	*ReadClient)(HCONN,LPVOID,LPDWORD);

	BOOL	(PASCAL	*ServerSupportFunction)(HCONN,DWORD,LPVOID,LPDWORD,LPDWORD);

} EXTENSION_CONTROL_BLOCK, *LPEXTENSION_CONTROL_BLOCK;

typedef	BOOL	(PASCAL	*PFN_GETEXTENSIONVERSION)(HSE_VERSION_INFO*);

typedef	DWORD	(PASCAL	*PFN_HTTPEXTENSIONPROC)(EXTENSION_CONTROL_BLOCK*);

typedef	BOOL	(PASCAL	*PFN_TERMINATEEXTENSION)(DWORD);

typedef	VOID	(PASCAL	*PFN_HSE_IO_COMPLETION)(EXTENSION_CONTROL_BLOCK*,PVOID,DWORD,DWORD);

typedef struct _HSE_TF_INFO {

	PFN_HSE_IO_COMPLETION pfnHseIO;

	PVOID pContext;

	HANDLE hFile;

	LPCSTR pszStatusCode;

	DWORD BytesToWrite;

	DWORD Offset;

	PVOID pHead;

	DWORD HeadLength;

	PVOID pTail;

	DWORD TailLength;

	DWORD dwFlags;

} HSE_TF_INFO, *LPHSE_TF_INFO;

typedef struct _HSE_SEND_HEADER_EX_INFO {

	LPCSTR pszStatus;

	LPCSTR pszHeader;

	DWORD cchStatus;

	DWORD cchHeader;

	BOOL fKeepConn;

} HSE_SEND_HEADER_EX_INFO, * LPHSE_SEND_HEADER_EX_INF;

BOOL	PASCAL	GetExtensionVersion(HSE_VERSION_INFO*);

DWORD	PASCAL	HttpExtensionProc(EXTENSION_CONTROL_BLOCK*);

BOOL	PASCAL	TerminateExtension(DWORD);

#ifdef __cplusplus

}

#endif

#endif /* _HTTPEXT_H */