432 lines
10 KiB
C++
432 lines
10 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1995.
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//
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// File: cnetstrm.cxx
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//
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// Contents: Implements the stream: protocol
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//
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// Classes: CINetStream
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//
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// Functions:
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//
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// History: 5/3/96 Created Craig Critchley [craigc]
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//
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//----------------------------------------------------------------------------
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#include <trans.h>
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//+---------------------------------------------------------------------------
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//
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// Method: CINetStream::CINetStream
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//
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// Synopsis: Constructs a stream protcol object
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//
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// Arguments: rclsid
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//
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// Returns:
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//
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// History: 5/3/96 Created Craig Critchley [craigc]
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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CINetStream::CINetStream(REFCLSID rclsid, IUnknown *pUnkOuter) : CINet(rclsid,pUnkOuter)
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{
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DEBUG_ENTER((DBG_TRANS,
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None,
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"CINetStream::CINetStream",
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"this=%#x, %#x, %#x",
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this, &rclsid, pUnkOuter
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));
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_dwIsA = DLD_PROTOCOL_STREAM;
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_pstm = NULL;
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DEBUG_LEAVE(0);
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CINetStream::~CINetStream
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//
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// Synopsis: destroys a stream protocol object
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//
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// Arguments:
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//
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// Returns:
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//
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// History: 5/3/96 Created Craig Critchley [craigc]
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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CINetStream::~CINetStream()
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{
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DEBUG_ENTER((DBG_TRANS,
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None,
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"CINetStream::~CINetStream",
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"this=%#x",
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this
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));
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if (_pstm)
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{
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_pstm->Release();
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}
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DEBUG_LEAVE(0);
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CINetStream::INetAsyncOpen
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//
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// Synopsis: opens and synchronously downloads data from a stream
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//
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// Arguments: rclsid
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//
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// Returns:
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//
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// History: 5/3/96 Created Craig Critchley [craigc]
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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HRESULT CINetStream::INetAsyncOpen()
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{
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DEBUG_ENTER((DBG_TRANS,
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Hresult,
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"CINetStream::INetAsyncOpen",
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"this=%#x",
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this
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));
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IBindCtx * pbc = 0;
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IMoniker * pmk = 0;
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IStream * pstm = 0;
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IParseDisplayName * pParser = 0;
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STATSTG stat;
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CLSID clsid;
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CHAR szDisplayName[MAX_PATH];
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WCHAR wzDisplayName[MAX_PATH];
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WCHAR wzProgId[MAX_PATH];
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LPSTR pa, psz;
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LPWSTR pwz, pwzI;
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int cch;
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HRESULT hr = E_NOTIMPL;
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ULONG cchE;
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BOOL fGotMIMEType = FALSE;
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ReportNotification(BINDSTATUS_SENDINGREQUEST);
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// need one of these
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//
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if (FAILED(hr = CreateBindCtx(0,&pbc)))
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goto End;
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// form is mk:@progid:moniker
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//
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strcpy(szDisplayName,GetServerName());
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strcat(szDisplayName,psz = GetObjectName());
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// if the moniker has a file extension, try to
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// determine the MIME type that way...
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//
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psz = FindFileExtension(psz);
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if (psz)
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{
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char szMime[MAX_PATH];
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DWORD cb = MAX_PATH;
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if (SUCCEEDED(GetMimeFromExt(psz,szMime,&cb)))
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{
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ReportNotification(BINDSTATUS_MIMETYPEAVAILABLE, szMime);
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fGotMIMEType = TRUE;
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}
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}
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A2W(szDisplayName,wzDisplayName,MAX_PATH);
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// find progid
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//
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for (pwz = wzDisplayName, pwzI = wzProgId; *pwz; pwz++)
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{
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if (*pwz == '@')
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{
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pwzI = wzProgId;
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}
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else if (*pwz == ':')
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{
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*pwzI = 0;
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// the remainder may have a filename with a useful
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// extension... just in case, set the filename...
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//
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LPSTR pszStr = DupW2A(pwz+1);
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if (pszStr)
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{
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ReportNotification(BINDSTATUS_CACHEFILENAMEAVAILABLE, pszStr);
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delete pszStr;
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}
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break;
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}
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else
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{
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*pwzI++ = *pwz;
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}
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}
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#if 0
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if (FAILED(hr = MkParseDisplayName(pbc,wzDisplayName,&cchE,&pmk)) && pmk)
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goto End;
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#else
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// BUGBUG
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//
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// MkParseDisplayName was opening another instance of app
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// force inproc server. ick.
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//
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if (FAILED(hr = CLSIDFromProgID(wzProgId,&clsid)))
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{
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goto End;
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}
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if (FAILED(hr = CoCreateInstance(clsid,0,CLSCTX_INPROC_SERVER,
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IID_IParseDisplayName,(void**)&pParser)))
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{
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goto End;
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}
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TransAssert((pParser));
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if (FAILED(hr = pParser->ParseDisplayName(pbc,wzDisplayName,&cchE,&pmk)))
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{
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goto End;
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}
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TransAssert((pmk));
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#endif
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if (FAILED(hr = pmk->BindToStorage(pbc,0,IID_IStream,(void**)&pstm)))
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{
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hr = INET_E_RESOURCE_NOT_FOUND;
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goto End;
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}
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TransAssert((hr != MK_S_ASYNCHRONOUS));
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TransAssert((pstm));
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_pstm = pstm;
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_pstm->AddRef();
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// now we have a stream - stuff it into the trans data
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//
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if (FAILED(hr = pstm->Stat(&stat,STATFLAG_NONAME)))
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{
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goto End;
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}
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_cbTotalBytesRead = stat.cbSize.LowPart;
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_cbDataSize = stat.cbSize.LowPart;
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hr = _pCTrans->ReportData(BSCF_FIRSTDATANOTIFICATION | BSCF_LASTDATANOTIFICATION, stat.cbSize.LowPart,stat.cbSize.LowPart);
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_hrError = INET_E_DONE;
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End:
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if (FAILED(hr))
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{
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SetCNetBindResult(GetLastError());
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_hrError = INET_E_RESOURCE_NOT_FOUND;
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ReportResultAndStop(_hrError);
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}
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// play nice, no leaks
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//
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if (pParser)
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{
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pParser->Release();
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}
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if (pmk)
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{
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pmk->Release();
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}
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if (pbc)
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{
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pbc->Release();
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}
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if (pstm)
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{
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pstm->Release();
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}
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// make sure I set this any way I get out
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//
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TransAssert((hr != E_NOTIMPL));
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DEBUG_LEAVE(hr);
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return hr;
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CINetStream::ReadDataHere
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//
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// Synopsis:
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//
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// Arguments: [pBuffer] --
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// [cbBytes] --
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// [pcbBytes] --
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//
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// Returns:
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//
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// History: 10-29-1996 JohannP (Johann Posch) Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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HRESULT CINetStream::ReadDataHere(BYTE *pBuffer, DWORD cbBytes, DWORD *pcbBytes)
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{
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DEBUG_ENTER((DBG_TRANS,
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Hresult,
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"CINetStream::ReadDataHere",
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"this=%#x, %#x, %#x, %#x",
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this, pBuffer, cbBytes, pcbBytes
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));
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TransDebugOut((DEB_PROT, "%p _IN CINetStream::ReadDataHere\n", this));
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HRESULT hr = E_FAIL;
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TransAssert((cbBytes && pcbBytes));
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if (_pstm)
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{
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hr = _pstm->Read(pBuffer,cbBytes,pcbBytes);
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}
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TransDebugOut((DEB_PROT, "%p OUT CINetStream::ReadDataHere (_hrError:%lx, [hr:%lx,cbBytesAsked:%ld,cbBytesReturned:%ld]) \n",
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this, _hrError, hr, cbBytes, *pcbBytes));
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DEBUG_LEAVE(hr);
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return hr;
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CINetStream::INetSeek
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//
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// Synopsis:
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//
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// Arguments: [DWORD] --
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// [ULARGE_INTEGER] --
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// [plibNewPosition] --
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//
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// Returns:
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//
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// History: 10-29-1996 JohannP (Johann Posch) Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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HRESULT CINetStream::INetSeek(LARGE_INTEGER dlibMove,DWORD dwOrigin,ULARGE_INTEGER *plibNewPosition)
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{
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DEBUG_ENTER((DBG_TRANS,
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Hresult,
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"CINetStream::INetSeek",
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"this=%#x, %#x, %#x, %#x",
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this, dlibMove, dwOrigin, plibNewPosition
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));
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TransDebugOut((DEB_PROT, "%p _IN CINetStream::INetSeek\n", this));
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HRESULT hr = E_FAIL;
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if (_pstm)
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{
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hr = _pstm->Seek(dlibMove, dwOrigin, plibNewPosition);
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}
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TransDebugOut((DEB_PROT, "%p OUT CINetStream::INetSeek (hr:%lx) \n",this, hr));
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DEBUG_LEAVE(hr);
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return hr;
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CINetStream::LockFile
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//
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// Synopsis:
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//
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// Arguments:
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//
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// Returns:
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//
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// History: 8-13-96 JohannP (Johann Posch) Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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HRESULT CINetStream::LockFile(BOOL fRetrieve)
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{
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DEBUG_ENTER((DBG_TRANS,
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Hresult,
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"CINetStream::LockFile",
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"this=%#x, %B",
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this, fRetrieve
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));
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TransDebugOut((DEB_PROT, "%p _IN CINetStream::LockFile\n", this));
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HRESULT hr = NOERROR;
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// nothing to do for now
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TransDebugOut((DEB_PROT,"%p OUT CINetStream::LockFile (hr:%lx)\n",this, hr));
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DEBUG_LEAVE(hr);
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return hr;
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CINetStream::UnlockFile
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//
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// Synopsis: unlocks the file
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//
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// Arguments: (none)
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//
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// Returns:
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//
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// History: 8-13-96 JohannP (Johann Posch) Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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HRESULT CINetStream::UnlockFile()
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{
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DEBUG_ENTER((DBG_TRANS,
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Hresult,
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"CINetStream::UnlockFile",
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"this=%#x",
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this
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));
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TransDebugOut((DEB_PROT, "%p IN CINetStream::UnlockFile\n", this));
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HRESULT hr = NOERROR;
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// nothing to do for now
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TransDebugOut((DEB_PROT,"%p OUT CINetStream::UnlockFile (hr:%lx)\n", this, hr));
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DEBUG_LEAVE(hr);
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return hr;
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}
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