Leaked source code of windows server 2003
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/*++
Copyright (c) 1994 Microsoft Corporation
Module Name:
gopher.cxx
Abstract:
Contains methods for GOPHER_FIND_HANDLE_OBJECT and GOPHER_FILE_HANDLE_OBJECT
classes
Contents:
RMakeGfrFindObjectHandle
RMakeGfrFileObjectHandle
RMakeGfrFixedObjectHandle
Author:
Madan Appiah (madana) 16-Nov-1994
Environment:
User Mode - Win32
Revision History:
Sophia Chung (sophiac) 14-Feb-1995 (added FTP and Archie class impl.)
(code adopted from madana)
--*/
#include <wininetp.h>
//
// functions
//
DWORD
RMakeGfrFindObjectHandle(
IN HINTERNET ParentHandle,
IN OUT HINTERNET * ChildHandle,
IN CLOSE_HANDLE_FUNC wCloseFunc,
IN DWORD_PTR dwContext
)
/*++
Routine Description:
Routine Description:
C-callable wrapper for creating a GOPHER_FIND_HANDLE_OBJECT
Arguments:
ParentHandle - mapped address of parent (connect) handle
ChildHandle - IN: protocol-specific handle value associated with object
OUT: mapped address of GOPHER_FIND_HANDLE_OBJECT
wCloseFunc - address of protocol-specific function to be called when
object is closed
dwContext - app-supplied context value
Return Value:
DWORD
Success - ERROR_SUCCESS
Failure - ERROR_NOT_ENOUGH_MEMORY
--*/
{
DWORD error;
GOPHER_FIND_HANDLE_OBJECT * hFind;
hFind = new GOPHER_FIND_HANDLE_OBJECT(
(INTERNET_CONNECT_HANDLE_OBJECT *)ParentHandle,
*ChildHandle,
wCloseFunc,
dwContext
);
if (hFind != NULL) {
error = hFind->GetStatus();
if (error == ERROR_SUCCESS) {
//
// inform the app of the new handle
//
error = InternetIndicateStatusNewHandle((LPVOID)hFind);
//
// ERROR_INTERNET_OPERATION_CANCELLED is the only error that we are
// expecting here. If we get this error then the app has cancelled
// the operation. Either way, the handle we just generated will be
// already deleted
//
if (error != ERROR_SUCCESS) {
INET_ASSERT(error == ERROR_INTERNET_OPERATION_CANCELLED);
hFind = NULL;
}
} else {
delete hFind;
hFind = NULL;
}
} else {
error = ERROR_NOT_ENOUGH_MEMORY;
}
*ChildHandle = (HINTERNET)hFind;
return error;
}
DWORD
RMakeGfrFixedObjectHandle(
IN HINTERNET ParentHandle,
IN OUT HINTERNET * ChildHandle,
IN DWORD dwFixedType
)
/*++
Routine Description:
Routine Description:
C-callable wrapper for creating a GOPHER_FIND_HANDLE_OBJECT
Arguments:
ParentHandle - mapped address of parent (connect) handle
ChildHandle - IN: protocol-specific handle value associated with object
OUT: mapped address of GOPHER_FIND_HANDLE_OBJECT
Return Value:
DWORD
Success - ERROR_SUCCESS
Failure - ERROR_NOT_ENOUGH_MEMORY
--*/
{
DWORD error;
GOPHER_FIND_HANDLE_OBJECT * hFind;
hFind = new GOPHER_FIND_HANDLE_OBJECT(
(INTERNET_CONNECT_HANDLE_OBJECT *)ParentHandle,
*ChildHandle,
dwFixedType
);
if (!hFind) {
error = ERROR_NOT_ENOUGH_MEMORY;
} else {
error = hFind->GetStatus();
if (error != ERROR_SUCCESS) {
delete hFind;
hFind = NULL;
}
}
*ChildHandle = (HINTERNET)hFind;
return error;
}
DWORD
RMakeGfrFileObjectHandle(
IN HINTERNET ParentHandle,
IN OUT HINTERNET * ChildHandle,
IN CLOSE_HANDLE_FUNC wCloseFunc,
IN DWORD_PTR dwContext
)
/*++
Routine Description:
C-callable wrapper for creating a GOPHER_FILE_HANDLE_OBJECT
Arguments:
ParentHandle - mapped address of parent (connect) handle
ChildHandle - IN: protocol-specific handle value associated with object
OUT: mapped address of GOPHER_FILE_HANDLE_OBJECT
wCloseFunc - address of protocol-specific function to be called when
object is closed
dwContext - app-supplied context value
Return Value:
DWORD
Success - ERROR_SUCCESS
Failure - ERROR_NOT_ENOUGH_MEMORY
--*/
{
DWORD error;
GOPHER_FILE_HANDLE_OBJECT * hFile;
hFile = new GOPHER_FILE_HANDLE_OBJECT(
(INTERNET_CONNECT_HANDLE_OBJECT *)ParentHandle,
*ChildHandle,
wCloseFunc,
dwContext
);
if (hFile != NULL) {
error = hFile->GetStatus();
if (error == ERROR_SUCCESS) {
//
// inform the app of the new handle
//
error = InternetIndicateStatusNewHandle((LPVOID)hFile);
//
// ERROR_INTERNET_OPERATION_CANCELLED is the only error that we are
// expecting here. If we get this error then the app has cancelled
// the operation. Either way, the handle we just generated will be
// already deleted
//
if (error != ERROR_SUCCESS) {
INET_ASSERT(error == ERROR_INTERNET_OPERATION_CANCELLED);
hFile = NULL;
}
} else {
delete hFile;
hFile = NULL;
}
} else {
error = ERROR_NOT_ENOUGH_MEMORY;
}
*ChildHandle = (HINTERNET)hFile;
return error;
}
//
// GOPHER_FIND_HANDLE_OBJECT class implementation
//
GOPHER_FIND_HANDLE_OBJECT::GOPHER_FIND_HANDLE_OBJECT(
INTERNET_CONNECT_HANDLE_OBJECT *Parent,
HINTERNET Child,
CLOSE_HANDLE_FUNC wCloseFunc,
DWORD_PTR dwContext
) : INTERNET_CONNECT_HANDLE_OBJECT(Parent)
{
_FindHandle = Child;
_wCloseFunction = wCloseFunc;
_IsHtml = FALSE;
_dwFixedType = 0;
_lpszUrl = NULL;
_lpszDirEntry = NULL;
_QueryBuffer = NULL;
_QueryBufferLength = 0;
_QueryOffset = 0;
_QueryBytesAvailable = 0;
_Context = dwContext;
SetObjectType(TypeGopherFindHandle);
}
//
// Constructor for poser find handle to return html form...
//
GOPHER_FIND_HANDLE_OBJECT::GOPHER_FIND_HANDLE_OBJECT(
INTERNET_CONNECT_HANDLE_OBJECT *Parent,
HINTERNET Child,
DWORD dwFixedType
) : INTERNET_CONNECT_HANDLE_OBJECT (Parent)
{
_FindHandle = Child;
_wCloseFunction = NULL;
_IsHtml = FALSE; // must set FALSE so RSetHtmlHandleType can set TRUE!
_dwFixedType = dwFixedType;
_lpszUrl = NULL;
_lpszDirEntry = NULL;
_QueryBuffer = NULL;
_QueryBufferLength = 0;
_QueryOffset = 0;
_QueryBytesAvailable = 0;
_Context = 0;
SetObjectType(TypeGopherFindHandle);
}
GOPHER_FIND_HANDLE_OBJECT::~GOPHER_FIND_HANDLE_OBJECT(
VOID
)
{
//
// close local handle with appropriate function.
//
if (_FindHandle != NULL) {
_Status = _wCloseFunction(_FindHandle);
} else {
_Status = ERROR_SUCCESS;
}
//
// clear out any strings we allocated
//
if (_lpszUrl != NULL) {
DEL_STRING(_lpszUrl);
}
if (_lpszDirEntry != NULL) {
DEL_STRING(_lpszDirEntry);
}
//
// and the query buffer
//
FreeQueryBuffer();
}
HINTERNET
GOPHER_FIND_HANDLE_OBJECT::GetHandle(
VOID
)
{
return _FindHandle;
}
DWORD
GOPHER_FIND_HANDLE_OBJECT::QueryHtmlDataAvailable(
OUT LPDWORD lpdwNumberOfBytesAvailable
)
{
DWORD error;
if (_QueryBuffer != NULL) {
error = ERROR_SUCCESS;
} else {
error = AllocateQueryBuffer();
}
INET_ASSERT(_QueryBytesAvailable == 0);
if (error == ERROR_SUCCESS) {
DWORD nRead;
_QueryOffset = 0;
if (ReadHtmlUrlData((HINTERNET)this,
_QueryBuffer,
_QueryBufferLength,
lpdwNumberOfBytesAvailable
)) {
_QueryBytesAvailable = *lpdwNumberOfBytesAvailable;
//SetAvailableDataLength(_QueryBytesAvailable);
if (_QueryBytesAvailable == 0) {
SetEndOfFile();
}
} else {
error = GetLastError();
}
}
return error;
}
//
// GOPHER_FILE_HANDLE_OBJECT class implementation
//
GOPHER_FILE_HANDLE_OBJECT::GOPHER_FILE_HANDLE_OBJECT(
INTERNET_CONNECT_HANDLE_OBJECT *Parent,
HINTERNET Child,
CLOSE_HANDLE_FUNC wCloseFunc,
DWORD_PTR dwContext
) : INTERNET_CONNECT_HANDLE_OBJECT(Parent)
{
_FileHandle = Child;
_wCloseFunction = wCloseFunc;
_IsHtml = FALSE;
_lpszUrl = NULL;
_lpszDirEntry = NULL;
_Context = dwContext;
SetObjectType(TypeGopherFileHandle);
}
GOPHER_FILE_HANDLE_OBJECT::~GOPHER_FILE_HANDLE_OBJECT(
VOID
)
{
//
// close local handle with appropriate function.
//
if (_FileHandle != NULL) {
_Status = _wCloseFunction(_FileHandle);
} else {
_Status = ERROR_SUCCESS;
}
//
// clear out any strings we allocated
//
if (_lpszUrl != NULL) {
DEL_STRING(_lpszUrl);
}
if (_lpszDirEntry != NULL) {
DEL_STRING(_lpszDirEntry);
}
}
HINTERNET
GOPHER_FILE_HANDLE_OBJECT::GetHandle(
VOID
)
{
return _FileHandle;
}