223 lines
7.4 KiB
C
223 lines
7.4 KiB
C
/********
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*
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* Copyright (c) 1995 Process Software Corporation
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*
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* Copyright (c) 1995-1996 Microsoft Corporation
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*
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*
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* Module Name : HttpExt.h
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*
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* Abstract :
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*
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* This module contains the structure definitions and prototypes for the
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* version 2.0 HTTP Server Extension interface.
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*
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******************/
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#ifndef _HTTPEXT_H_
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#define _HTTPEXT_H_
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#include <windows.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define HSE_VERSION_MAJOR 2 // major version of this spec
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#define HSE_VERSION_MINOR 0 // minor version of this spec
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#define HSE_LOG_BUFFER_LEN 80
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#define HSE_MAX_EXT_DLL_NAME_LEN 256
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typedef LPVOID HCONN;
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// the following are the status codes returned by the Extension DLL
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#define HSE_STATUS_SUCCESS 1
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#define HSE_STATUS_SUCCESS_AND_KEEP_CONN 2
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#define HSE_STATUS_PENDING 3
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#define HSE_STATUS_ERROR 4
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// The following are the values to request services with the ServerSupportFunction.
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// Values from 0 to 1000 are reserved for future versions of the interface
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#define HSE_REQ_BASE 0
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#define HSE_REQ_SEND_URL_REDIRECT_RESP ( HSE_REQ_BASE + 1 )
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#define HSE_REQ_SEND_URL ( HSE_REQ_BASE + 2 )
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#define HSE_REQ_SEND_RESPONSE_HEADER ( HSE_REQ_BASE + 3 )
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#define HSE_REQ_DONE_WITH_SESSION ( HSE_REQ_BASE + 4 )
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#define HSE_REQ_END_RESERVED 1000
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//
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// These are Microsoft specific extensions
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//
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#define HSE_REQ_MAP_URL_TO_PATH (HSE_REQ_END_RESERVED+1)
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#define HSE_REQ_GET_SSPI_INFO (HSE_REQ_END_RESERVED+2)
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#define HSE_APPEND_LOG_PARAMETER (HSE_REQ_END_RESERVED+3)
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#define HSE_REQ_SEND_URL_EX (HSE_REQ_END_RESERVED+4)
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#define HSE_REQ_IO_COMPLETION (HSE_REQ_END_RESERVED+5)
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#define HSE_REQ_TRANSMIT_FILE (HSE_REQ_END_RESERVED+6)
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#define HSE_REQ_REFRESH_ISAPI_ACL (HSE_REQ_END_RESERVED+7)
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//
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// Bit Flags for TerminateExtension
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//
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// HSE_TERM_ADVISORY_UNLOAD - Server wants to unload the extension,
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// extension can return TRUE if OK, FALSE if the server should not
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// unload the extension
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//
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// HSE_TERM_MUST_UNLOAD - Server indicating the extension is about to be
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// unloaded, the extension cannot refuse.
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//
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#define HSE_TERM_ADVISORY_UNLOAD 0x00000001
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#define HSE_TERM_MUST_UNLOAD 0x00000002
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//
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// Flags for IO Functions, supported for IO Funcs.
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// TF means ServerSupportFunction( HSE_REQ_TRANSMIT_FILE)
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//
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# define HSE_IO_SYNC 0x00000001 // for WriteClient
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# define HSE_IO_ASYNC 0x00000002 // for WriteClient/TF
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# define HSE_IO_DISCONNECT_AFTER_SEND 0x00000004 // for TF
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# define HSE_IO_SEND_HEADERS 0x00000008 // for TF
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//
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// passed to GetExtensionVersion
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//
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typedef struct _HSE_VERSION_INFO {
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DWORD dwExtensionVersion;
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CHAR lpszExtensionDesc[HSE_MAX_EXT_DLL_NAME_LEN];
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} HSE_VERSION_INFO, *LPHSE_VERSION_INFO;
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//
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// passed to extension procedure on a new request
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//
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typedef struct _EXTENSION_CONTROL_BLOCK {
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DWORD cbSize; // size of this struct.
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DWORD dwVersion; // version info of this spec
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HCONN ConnID; // Context number not to be modified!
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DWORD dwHttpStatusCode; // HTTP Status code
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CHAR lpszLogData[HSE_LOG_BUFFER_LEN];// null terminated log info specific to this Extension DLL
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LPSTR lpszMethod; // REQUEST_METHOD
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LPSTR lpszQueryString; // QUERY_STRING
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LPSTR lpszPathInfo; // PATH_INFO
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LPSTR lpszPathTranslated; // PATH_TRANSLATED
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DWORD cbTotalBytes; // Total bytes indicated from client
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DWORD cbAvailable; // Available number of bytes
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LPBYTE lpbData; // pointer to cbAvailable bytes
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LPSTR lpszContentType; // Content type of client data
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BOOL (WINAPI * GetServerVariable) ( HCONN hConn,
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LPSTR lpszVariableName,
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LPVOID lpvBuffer,
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LPDWORD lpdwSize );
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BOOL (WINAPI * WriteClient) ( HCONN ConnID,
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LPVOID Buffer,
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LPDWORD lpdwBytes,
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DWORD dwReserved );
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BOOL (WINAPI * ReadClient) ( HCONN ConnID,
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LPVOID lpvBuffer,
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LPDWORD lpdwSize );
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BOOL (WINAPI * ServerSupportFunction)( HCONN hConn,
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DWORD dwHSERRequest,
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LPVOID lpvBuffer,
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LPDWORD lpdwSize,
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LPDWORD lpdwDataType );
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} EXTENSION_CONTROL_BLOCK, *LPEXTENSION_CONTROL_BLOCK;
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//
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// these are the prototypes that must be exported from the extension DLL
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//
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BOOL WINAPI GetExtensionVersion( HSE_VERSION_INFO *pVer );
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DWORD WINAPI HttpExtensionProc( EXTENSION_CONTROL_BLOCK *pECB );
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BOOL WINAPI TerminateExtension( DWORD dwFlags );
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// the following type declarations is for the server side
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typedef BOOL (WINAPI * PFN_GETEXTENSIONVERSION)( HSE_VERSION_INFO *pVer );
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typedef DWORD (WINAPI * PFN_HTTPEXTENSIONPROC )( EXTENSION_CONTROL_BLOCK *pECB );
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typedef BOOL (WINAPI * PFN_TERMINATEEXTENSION )( DWORD dwFlags );
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typedef VOID
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(WINAPI * PFN_HSE_IO_COMPLETION)(
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IN EXTENSION_CONTROL_BLOCK * pECB,
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IN PVOID pContext,
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IN DWORD cbIO,
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IN DWORD dwError
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);
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//
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// HSE_TF_INFO defines the type for HTTP SERVER EXTENSION support for
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// ISAPI applications to send files using TransmitFile.
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// A pointer to this object should be used with ServerSupportFunction()
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// for HSE_REQ_TRANSMIT_FILE.
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//
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typedef struct _HSE_TF_INFO {
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//
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// callback and context information
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// the callback function will be called when IO is completed.
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// the context specified will be used during such callback.
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//
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// These values (if non-NULL) will override the one set by calling
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// ServerSupportFunction() with HSE_REQ_IO_COMPLETION
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//
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PFN_HSE_IO_COMPLETION pfnHseIO;
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PVOID pContext;
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// file should have been opened with FILE_FLAG_SEQUENTIAL_SCAN
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HANDLE hFile;
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//
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// HTTP header and status code
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// These fields are used only if HSE_IO_SEND_HEADERS is present in dwFlags
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//
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LPCSTR pszStatusCode; // HTTP Status Code eg: "200 OK"
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DWORD BytesToWrite; // special value of "0" means write entire file.
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DWORD Offset; // offset value within the file to start from
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PVOID pHead; // Head buffer to be sent before file data
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DWORD HeadLength; // header length
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PVOID pTail; // Tail buffer to be sent after file data
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DWORD TailLength; // tail length
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DWORD dwFlags; // includes HSE_IO_DISCONNECT_AFTER_SEND, ...
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} HSE_TF_INFO, * LPHSE_TF_INFO;
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#ifdef __cplusplus
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}
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#endif
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#endif // end definition _HTTPEXT_H_
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