838 lines
16 KiB
C++
838 lines
16 KiB
C++
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#ifndef _W3CONTEXT_HXX_
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#define _W3CONTEXT_HXX_
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#define W3_PARAMETERS_KEY \
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L"System\\CurrentControlSet\\Services\\w3svc\\Parameters"
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#define W3_FLAG_ASYNC 0x00000001
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#define W3_FLAG_SYNC 0x00000002
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#define W3_FLAG_NO_CUSTOM_ERROR 0x00000004
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#define W3_FLAG_MORE_DATA 0x00000008
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#define W3_FLAG_PAST_END_OF_REQ 0x00000010
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#define W3_FLAG_NO_HEADERS 0x00000020
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#define W3_FLAG_GENERATE_CONTENT_LENGTH 0x00000040
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#define W3_FLAG_NO_ERROR_BODY 0x00000080
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#define W3_FLAG_VALID ( W3_FLAG_ASYNC | \
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W3_FLAG_SYNC | \
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W3_FLAG_NO_CUSTOM_ERROR | \
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W3_FLAG_MORE_DATA | \
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W3_FLAG_PAST_END_OF_REQ | \
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W3_FLAG_NO_HEADERS | \
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W3_FLAG_NO_ERROR_BODY | \
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W3_FLAG_GENERATE_CONTENT_LENGTH )
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#define VALID_W3_FLAGS(x) ( (x) == ((x) & (W3_FLAG_VALID)) )
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class URL_CONTEXT;
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class W3_HANDLER;
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class COMPRESSION_CONTEXT;
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//
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// Access check state
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//
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// We potentially do two asynchronous operations in determining whether
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// a given request is valid
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// 1) Do an RDNS lookup if restrictions are configured in metabase
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// 2) Request a client certificate if configured in metabase
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//
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enum W3_CONTEXT_ACCESS_STATE
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{
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ACCESS_STATE_START,
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ACCESS_STATE_RDNS,
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ACCESS_STATE_CLIENT_CERT,
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ACCESS_STATE_AUTHENTICATION,
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ACCESS_STATE_SENDING_ERROR,
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ACCESS_STATE_DONE
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};
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//
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// W3_CONTEXT - Object representing an execution of the state machine to
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// handle a given request from UL
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//
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#define W3_CONTEXT_LIST_SPINS 200
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#define W3_CONTEXT_SIGNATURE ((DWORD) 'XC3W')
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#define W3_CONTEXT_SIGNATURE_FREE ((DWORD) 'xc3w')
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class W3_CONTEXT
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{
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private:
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DWORD _dwSignature;
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//
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// Handler for this context
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//
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W3_HANDLER * _pHandler;
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//
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// Error Status for request
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//
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HRESULT _errorStatus;
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//
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// Completion indication (for synchronous execution of handlers)
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//
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HANDLE _hCompletion;
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//
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// Custom error file to cleanup
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//
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W3_FILE_INFO * _pCustomErrorFile;
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//
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// Maintain list of contexts
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//
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LIST_ENTRY _listEntry;
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//
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// Where are we with checking access rights for this request
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//
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W3_CONTEXT_ACCESS_STATE _accessState;
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BOOL _fDNSRequiredForAccess; // argh
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//
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// The status of last child request executed by this context
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//
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USHORT _childStatusCode;
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USHORT _childSubErrorCode;
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HRESULT _childError;
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//
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// Is authentication access check required or not
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//
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BOOL _fAuthAccessCheckRequired;
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CONTEXT_STATUS
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ExecuteCurrentHandler(
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VOID
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);
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protected:
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//
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// The flags determining how to execute this request
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// (we let child contexts alter these flags if needed)
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//
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DWORD _dwExecFlags;
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public:
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static CHAR sm_achRedirectMessage[ 512 ];
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static DWORD sm_cbRedirectMessage;
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static CHAR * sm_pszAccessDeniedMessage;
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W3_CONTEXT(
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DWORD dwExecFlags
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);
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virtual ~W3_CONTEXT();
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virtual
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BOOL
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QueryResponseSent(
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VOID
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) = 0;
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virtual
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BOOL
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QuerySendLocation(
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VOID
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)
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{
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return FALSE;
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}
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virtual
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BOOL
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QueryNeedFinalDone(
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VOID
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) = 0;
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virtual
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VOID
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SetNeedFinalDone(
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VOID
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) = 0;
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virtual
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W3_REQUEST *
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QueryRequest(
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VOID
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) = 0;
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virtual
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W3_RESPONSE *
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QueryResponse(
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VOID
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) = 0;
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virtual
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W3_SITE *
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QuerySite(
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VOID
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) = 0;
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virtual
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W3_CONTEXT *
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QueryParentContext(
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VOID
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) = 0;
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virtual
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W3_MAIN_CONTEXT *
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QueryMainContext(
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VOID
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) = 0;
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virtual
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URL_CONTEXT *
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QueryUrlContext(
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VOID
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) = 0;
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virtual
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W3_USER_CONTEXT *
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QueryUserContext(
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VOID
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) = 0;
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virtual
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W3_FILTER_CONTEXT *
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QueryFilterContext(
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BOOL fCreateIfNotFound = TRUE
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) = 0;
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virtual
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ULATQ_CONTEXT
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QueryUlatqContext(
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VOID
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) = 0;
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virtual
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BOOL
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QueryProviderHandled(
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VOID
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) = 0;
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virtual
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BOOL
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NotifyFilters(
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DWORD dwNotification,
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VOID * pvFilterInfo,
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BOOL * pfFinished
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) = 0;
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virtual
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BOOL
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IsNotificationNeeded(
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DWORD dwNotification
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) = 0;
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virtual
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VOID
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SetDisconnect(
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BOOL fDisconnect
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) = 0;
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virtual
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BOOL
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QueryDisconnect(
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VOID
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) = 0;
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virtual
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VOID
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SetDoneWithCompression(
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VOID
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) = 0;
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virtual
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BOOL
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QueryDoneWithCompression(
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VOID
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) = 0;
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virtual
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VOID
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SetCompressionContext(
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COMPRESSION_CONTEXT * pCompressionContext
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) = 0;
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virtual
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COMPRESSION_CONTEXT *
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QueryCompressionContext(
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VOID
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) = 0;
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virtual
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HTTP_LOG_FIELDS_DATA *
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QueryUlLogData(
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VOID
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) = 0;
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virtual
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VOID
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SetLastIOPending(
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LAST_IO_PENDING ioPending
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) = 0;
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virtual
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VOID
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IncrementBytesRecvd(
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DWORD dwRead
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) = 0;
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virtual
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VOID
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IncrementBytesSent(
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DWORD dwSent
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) = 0;
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virtual
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BOOL
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QueryIsUlCacheable(
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VOID
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) = 0;
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virtual
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VOID
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DisableUlCache(
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VOID
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) = 0;
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//
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// Other fixed W3_CONTEXT methods
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//
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W3_HANDLER *
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QueryHandler(
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VOID
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) const
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{
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return _pHandler;
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}
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VOID
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SetChildStatusAndError(
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USHORT ChildStatusCode,
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USHORT ChildSubError,
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HRESULT ChildError
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)
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{
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_childStatusCode = ChildStatusCode;
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_childSubErrorCode = ChildSubError;
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_childError = ChildError;
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}
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VOID
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QueryChildStatusAndError(
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USHORT * pChildStatusCode,
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USHORT * pChildSubError,
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DWORD * pChildError
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) const
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{
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DBG_ASSERT( pChildStatusCode != NULL );
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DBG_ASSERT( pChildSubError != NULL );
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DBG_ASSERT( pChildError != NULL );
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*pChildStatusCode = _childStatusCode;
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*pChildSubError = _childSubErrorCode;
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if ( FAILED( _childError ) )
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{
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*pChildError = WIN32_FROM_HRESULT( _childError );
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}
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else
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{
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*pChildError = ERROR_SUCCESS;
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}
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}
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BOOL
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QuerySendCustomError(
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VOID
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) const
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{
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if ( _dwExecFlags & W3_FLAG_NO_CUSTOM_ERROR )
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{
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return FALSE;
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}
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else
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{
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return TRUE;
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}
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}
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BOOL
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QuerySendErrorBody(
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VOID
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) const
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{
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if ( _dwExecFlags & W3_FLAG_NO_ERROR_BODY )
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{
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return FALSE;
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}
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else
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{
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return TRUE;
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}
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}
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BOOL
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QuerySendHeaders(
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VOID
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) const
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{
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if ( _dwExecFlags & W3_FLAG_NO_HEADERS )
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{
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return FALSE;
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}
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else
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{
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return TRUE;
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}
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}
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VOID
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SetAuthAccessCheckRequired(
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BOOL fAuthAccessCheckRequired
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)
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{
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_fAuthAccessCheckRequired = fAuthAccessCheckRequired;
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}
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BOOL
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QueryAuthAccessCheckRequired(
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VOID
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) const
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{
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return _fAuthAccessCheckRequired;
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}
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VOID
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SetSSICommandHandler(
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W3_HANDLER * pHandler
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);
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BOOL
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QueryDoUlLogging(
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VOID
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);
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BOOL
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QueryDoCustomLogging(
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VOID
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);
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HRESULT
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SetupCustomErrorFileResponse(
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STRU & strErrorFile
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);
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HRESULT
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SendResponse(
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DWORD dwFlags
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);
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HRESULT
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GetCertificateInfoEx(
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IN DWORD cbAllocated,
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OUT DWORD * pdwCertEncodingType,
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OUT unsigned char * pbCertEncoded,
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OUT DWORD * pcbCertEncoded,
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OUT DWORD * pdwCertificateFlags
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);
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HANDLE
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QueryImpersonationToken(
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BOOL * pfIsVrToken = NULL
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);
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HANDLE
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QueryPrimaryToken(
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VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
QueryFileCacheUser(
|
||
|
|
FILE_CACHE_USER * pFileUser
|
||
|
|
);
|
||
|
|
|
||
|
|
CONTEXT_STATUS
|
||
|
|
CheckAccess(
|
||
|
|
BOOL fCompletion,
|
||
|
|
DWORD dwCompletionStatus,
|
||
|
|
BOOL * pfAccessAllowed
|
||
|
|
);
|
||
|
|
|
||
|
|
CERTIFICATE_CONTEXT *
|
||
|
|
QueryCertificateContext(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
CHUNK_BUFFER *
|
||
|
|
QueryHeaderBuffer(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
CheckClientCertificateAccess(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
SendEntity(
|
||
|
|
DWORD dwFlags
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
ReceiveEntity(
|
||
|
|
DWORD dwFlags,
|
||
|
|
VOID * pBuffer,
|
||
|
|
DWORD cbBuffer,
|
||
|
|
DWORD * pBytesReceived
|
||
|
|
);
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
QueryRemainingEntityFromUl(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID SetRemainingEntityFromUl(
|
||
|
|
DWORD cbRemaining
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
QueryAlreadyAvailableEntity(
|
||
|
|
VOID ** ppvBuffer,
|
||
|
|
DWORD * pcbBuffer
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
QueryErrorStatus(
|
||
|
|
VOID
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return _errorStatus;
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID
|
||
|
|
SetErrorStatus(
|
||
|
|
HRESULT errorStatus
|
||
|
|
)
|
||
|
|
{
|
||
|
|
_errorStatus = errorStatus;
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
DoUrlRedirection(
|
||
|
|
BOOL *pfRedirected
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
SetupHttpRedirect(
|
||
|
|
STRA & strPath,
|
||
|
|
BOOL fIncludeParameters,
|
||
|
|
HTTP_STATUS & httpStatus
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
SetupHttpRedirect(
|
||
|
|
STRU & strPath,
|
||
|
|
BOOL fIncludeParameters,
|
||
|
|
HTTP_STATUS & httpStatus
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
SetupAllowHeader(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
CheckSignature(
|
||
|
|
VOID
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return _dwSignature == W3_CONTEXT_SIGNATURE;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
QueryAccessChecked(
|
||
|
|
VOID
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return _accessState == ACCESS_STATE_DONE;
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID
|
||
|
|
ResetAccessCheck(
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
_accessState = ACCESS_STATE_START;
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
SetupCompletionEvent(
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
_hCompletion = IIS_CREATE_EVENT( "W3_CONTEXT::_hCompletion",
|
||
|
|
this,
|
||
|
|
FALSE,
|
||
|
|
FALSE );
|
||
|
|
if ( _hCompletion == NULL )
|
||
|
|
{
|
||
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID
|
||
|
|
WaitForCompletion(
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if ( _hCompletion )
|
||
|
|
{
|
||
|
|
WaitForSingleObject( _hCompletion, INFINITE );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID
|
||
|
|
IndicateCompletion(
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if ( _hCompletion )
|
||
|
|
{
|
||
|
|
SetEvent( _hCompletion );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
QueryIsSynchronous(
|
||
|
|
VOID
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return _hCompletion != NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
IsapiExecuteUrl(
|
||
|
|
HSE_EXEC_URL_INFO * pExecUrlInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
CleanIsapiExecuteUrl(
|
||
|
|
HSE_EXEC_URL_INFO * pExecUrlInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
IsapiSendCustomError(
|
||
|
|
HSE_CUSTOM_ERROR_INFO * pCustomErrorInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
CleanIsapiSendCustomError(
|
||
|
|
HSE_CUSTOM_ERROR_INFO * pCustomErrorInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
ExecuteChildRequest(
|
||
|
|
W3_REQUEST * pNewRequest,
|
||
|
|
BOOL fOwnRequest,
|
||
|
|
DWORD dwFlags
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
ExecuteHandler(
|
||
|
|
DWORD dwFlags,
|
||
|
|
BOOL * pfDidImmediateFinish = NULL
|
||
|
|
);
|
||
|
|
|
||
|
|
CONTEXT_STATUS
|
||
|
|
ExecuteHandlerCompletion(
|
||
|
|
DWORD cbCompletion,
|
||
|
|
DWORD dwCompletionStatus
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
CheckPathInfoExists(
|
||
|
|
W3_HANDLER ** ppHandler
|
||
|
|
);
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
DetermineHandler(
|
||
|
|
BOOL fAllowWildcardMapping
|
||
|
|
);
|
||
|
|
|
||
|
|
static HRESULT
|
||
|
|
Initialize(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
static VOID
|
||
|
|
Terminate(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
static
|
||
|
|
VOID
|
||
|
|
OnCleanIsapiExecuteUrl(
|
||
|
|
DWORD dwCompletionStatus,
|
||
|
|
DWORD cbWritten,
|
||
|
|
LPOVERLAPPED lpo
|
||
|
|
);
|
||
|
|
|
||
|
|
static
|
||
|
|
VOID
|
||
|
|
OnCleanIsapiSendCustomError(
|
||
|
|
DWORD dwCompletionStatus,
|
||
|
|
DWORD cbWritten,
|
||
|
|
LPOVERLAPPED lpo
|
||
|
|
);
|
||
|
|
};
|
||
|
|
|
||
|
|
//
|
||
|
|
// EXECUTE_CONTEXT Used to marshall an IsapiExecuteUrl() or
|
||
|
|
// IsapiSendCustomError() on a clean (non-coinited) thread
|
||
|
|
//
|
||
|
|
|
||
|
|
#define EXECUTE_CONTEXT_SIGNATURE ((DWORD) 'TCXE')
|
||
|
|
#define EXECUTE_CONTEXT_SIGNATURE_FREE ((DWORD) 'xcxe')
|
||
|
|
|
||
|
|
class EXECUTE_CONTEXT
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
EXECUTE_CONTEXT( W3_CONTEXT * pW3Context )
|
||
|
|
{
|
||
|
|
DBG_ASSERT( pW3Context != NULL );
|
||
|
|
_hEvent = NULL;
|
||
|
|
|
||
|
|
_pW3Context = pW3Context;
|
||
|
|
ZeroMemory( &_ExecUrlInfo, sizeof( _ExecUrlInfo ) );
|
||
|
|
ZeroMemory( &_UserInfo, sizeof( _UserInfo ) );
|
||
|
|
ZeroMemory( &_EntityInfo, sizeof( _EntityInfo ) );
|
||
|
|
|
||
|
|
_dwSignature = EXECUTE_CONTEXT_SIGNATURE;
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual ~EXECUTE_CONTEXT()
|
||
|
|
{
|
||
|
|
_dwSignature = EXECUTE_CONTEXT_SIGNATURE_FREE;
|
||
|
|
|
||
|
|
if ( _hEvent != NULL )
|
||
|
|
{
|
||
|
|
SetEvent( _hEvent );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
InitializeFromExecUrlInfo(
|
||
|
|
HSE_EXEC_URL_INFO * pExecUrlInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
HSE_EXEC_URL_INFO *
|
||
|
|
QueryExecUrlInfo(
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return &_ExecUrlInfo;
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID
|
||
|
|
SetCompleteEvent(
|
||
|
|
HANDLE hEvent
|
||
|
|
)
|
||
|
|
{
|
||
|
|
_hEvent = hEvent;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
CheckSignature(
|
||
|
|
VOID
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return _dwSignature == EXECUTE_CONTEXT_SIGNATURE;
|
||
|
|
}
|
||
|
|
|
||
|
|
HANDLE
|
||
|
|
QueryCompleteEvent(
|
||
|
|
VOID
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return _hEvent;
|
||
|
|
}
|
||
|
|
|
||
|
|
W3_CONTEXT *
|
||
|
|
QueryW3Context(
|
||
|
|
VOID
|
||
|
|
) const
|
||
|
|
{
|
||
|
|
return _pW3Context;
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID *
|
||
|
|
operator new(
|
||
|
|
size_t size
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DBG_ASSERT( size == sizeof( EXECUTE_CONTEXT ) );
|
||
|
|
DBG_ASSERT( sm_pachExecuteContexts != NULL );
|
||
|
|
return sm_pachExecuteContexts->Alloc();
|
||
|
|
}
|
||
|
|
|
||
|
|
VOID
|
||
|
|
operator delete(
|
||
|
|
VOID * pExecuteContext
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DBG_ASSERT( pExecuteContext != NULL );
|
||
|
|
DBG_ASSERT( sm_pachExecuteContexts != NULL );
|
||
|
|
|
||
|
|
DBG_REQUIRE( sm_pachExecuteContexts->Free( pExecuteContext ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
static
|
||
|
|
HRESULT
|
||
|
|
Initialize(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
static
|
||
|
|
VOID
|
||
|
|
Terminate(
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
private:
|
||
|
|
DWORD _dwSignature;
|
||
|
|
W3_CONTEXT * _pW3Context;
|
||
|
|
HSE_EXEC_URL_INFO _ExecUrlInfo;
|
||
|
|
HSE_EXEC_URL_USER_INFO _UserInfo;
|
||
|
|
HSE_EXEC_URL_ENTITY_INFO _EntityInfo;
|
||
|
|
CHUNK_BUFFER _HeaderBuffer;
|
||
|
|
HANDLE _hEvent;
|
||
|
|
|
||
|
|
static ALLOC_CACHE_HANDLER * sm_pachExecuteContexts;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|