httpext.h

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/*
       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
 
#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_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;
BOOL    PASCAL  GetExtensionVersion(HSE_VERSION_INFO*);
DWORD   PASCAL  HttpExtensionProc(EXTENSION_CONTROL_BLOCK*);
BOOL    PASCAL  TerminateExtension(DWORD);
#ifdef __cplusplus
}
#endif
#endif /* _HTTPEXT_H */