584 lines
14 KiB
C++
584 lines
14 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1993.
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//
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// File: share.cxx
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//
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// Contents: Shell extension handler for sharing
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//
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// Classes: CShare
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//
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// History: 4-Apr-95 BruceFo Created
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//
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//--------------------------------------------------------------------------
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#include "headers.hxx"
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#pragma hdrstop
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#include "shrpage.hxx"
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#include "shrpage2.hxx"
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#include "share.hxx"
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#include "acl.hxx"
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#include "util.hxx"
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#include "resource.h"
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//--------------------------------------------------------------------------
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//+-------------------------------------------------------------------------
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//
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// Member: CShare::CShare
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//
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// Synopsis: Constructor
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//
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// History: 4-Apr-95 BruceFo Created
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//
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//--------------------------------------------------------------------------
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CShare::CShare(VOID) :
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_uRefs(1),
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_fPathChecked(FALSE),
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_fMultipleSharesSelected (FALSE)
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{
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INIT_SIG(CShare);
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_szPath[0] = 0;
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}
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//+-------------------------------------------------------------------------
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//
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// Member: CShare::~CShare
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//
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// Synopsis: Destructor
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//
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// History: 4-Apr-95 BruceFo Created
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//
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//--------------------------------------------------------------------------
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CShare::~CShare()
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{
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CHECK_SIG(CShare);
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}
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#define HIDA_GetPIDLItem(pida, i) (LPCITEMIDLIST)(((LPBYTE)pida)+(pida)->aoffset[i+1])
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LPCITEMIDLIST IDA_GetIDListPtr(LPIDA pida, UINT i)
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{
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if (i == (UINT)-1 || i < pida->cidl)
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{
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return HIDA_GetPIDLItem(pida, i);
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}
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return NULL;
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}
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//
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// Retrieve a PIDL from the HIDA.
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//
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STDAPI_(LPITEMIDLIST)
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IDA_FullIDList(
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CIDA * pidaIn
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, UINT idxIn
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)
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{
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LPITEMIDLIST pidl = NULL;
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LPCITEMIDLIST pidlParent = IDA_GetIDListPtr( pidaIn, (UINT) -1 );
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if ( NULL != pidlParent )
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{
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LPCITEMIDLIST pidlRel = IDA_GetIDListPtr( pidaIn, idxIn );
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if ( NULL != pidlRel )
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{
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pidl = ILCombine( pidlParent, pidlRel );
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}
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}
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return pidl;
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}
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//
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// Use LocalFree( ) to free the ppidaOut returned here
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//
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// Return Values:
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// S_OK
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// Successfully extracted and copied the HIDA.
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//
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// E_OUTOFMEMORY
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// Failed to copy the HIDA.
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//
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// other HRESULTs
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//
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HRESULT
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DataObj_CopyHIDA(
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IDataObject * pdtobjIn
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, CIDA ** ppidaOut
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)
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{
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HRESULT hr;
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STGMEDIUM medium;
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static CLIPFORMAT g_cfHIDA = 0;
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FORMATETC fmte = { 0, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
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// Check parameters
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appAssert( NULL != pdtobjIn );
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appAssert( NULL != ppidaOut );
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// Clear out parameter
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*ppidaOut = NULL;
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//
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// Register clip format if not already done.
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//
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if ( 0 == g_cfHIDA )
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{
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g_cfHIDA = (CLIPFORMAT) RegisterClipboardFormat( CFSTR_SHELLIDLIST );
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}
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fmte.cfFormat = g_cfHIDA;
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//
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// Retrieve HIDA
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//
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hr = pdtobjIn->GetData( &fmte, &medium );
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if ( SUCCEEDED( hr ) )
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{
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SIZE_T sizet = GlobalSize( medium.hGlobal );
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if ( (~((DWORD) 0)) > sizet )
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{
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DWORD cb = (DWORD) sizet;
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CIDA * pida = (CIDA *) LocalAlloc( 0, cb );
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if ( NULL != pida )
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{
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void * pv = GlobalLock( medium.hGlobal );
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CopyMemory( pida, pv, cb );
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GlobalUnlock( medium.hGlobal );
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*ppidaOut = pida;
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}
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else
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{
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hr = E_OUTOFMEMORY;
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}
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}
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else
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{
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hr = E_OUTOFMEMORY;
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}
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ReleaseStgMedium( &medium );
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}
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return hr;
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}
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//
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// Helpers to banish STRRET's into the realm of darkness
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//
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STDAPI DisplayNameOf(IShellFolder *psf, LPCITEMIDLIST pidl, DWORD flags, LPTSTR psz, UINT cch)
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{
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*psz = 0;
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STRRET sr;
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HRESULT hr = psf->GetDisplayNameOf(pidl, flags, &sr);
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if (SUCCEEDED(hr))
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hr = StrRetToBuf(&sr, pidl, psz, cch);
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return hr;
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}
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//+-------------------------------------------------------------------------
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//
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// Member: CShare::Initialize
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//
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// Derivation: IShellExtInit
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//
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// Synopsis: Initialize the shell extension. Stashes away the argument data.
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//
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// History: 4-Apr-95 BruceFo Created
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//
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// Notes: This method can be called more than once.
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//
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//--------------------------------------------------------------------------
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STDMETHODIMP
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CShare::Initialize(
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LPCITEMIDLIST pidlFolder,
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LPDATAOBJECT pDataObject,
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HKEY hkeyProgID
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)
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{
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CHECK_SIG(CShare);
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HRESULT hr = E_FAIL;
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if (pDataObject && _szPath[0] == 0)
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{
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STGMEDIUM medium;
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FORMATETC fmte = {CF_HDROP, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
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hr = pDataObject->GetData(&fmte, &medium);
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if (SUCCEEDED(hr))
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{
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// Get the count of shares that have been selected. Display the page only
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// if 1 share is selected but not for multiple shares.
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UINT nCntFiles = ::DragQueryFile ((HDROP) medium.hGlobal, -1, _szPath, ARRAYLEN (_szPath));
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if ( nCntFiles > 1 )
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{
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_fMultipleSharesSelected = TRUE;
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}
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DragQueryFile((HDROP)medium.hGlobal, 0, _szPath, ARRAYLEN(_szPath));
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ReleaseStgMedium(&medium);
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hr = S_OK;
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}
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}
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if (FAILED(hr) && _szPath[0] == 0 )
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{
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LPIDA pida;
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hr = DataObj_CopyHIDA(pDataObject, &pida);
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if (SUCCEEDED(hr))
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{
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if (pida->cidl > 1)
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{
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_fMultipleSharesSelected = TRUE;
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}
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// Only grab the first guy.
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LPITEMIDLIST pidl = IDA_FullIDList( pida, 0 );
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if ( NULL != pidl )
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{
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LPCITEMIDLIST pidlParent = IDA_GetIDListPtr( pida, (UINT) -1 );
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if (NULL != pidlParent)
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{
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IShellFolder * psf;
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LPCITEMIDLIST pidlLast;
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hr = SHBindToParent(pidl, IID_IShellFolder, (void**)&psf, &pidlLast);
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if (SUCCEEDED(hr))
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{
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hr = DisplayNameOf(psf, pidlLast, SHGDN_NORMAL | SHGDN_FORPARSING, _szPath, ARRAYLEN(_szPath));
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psf->Release();
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}
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}
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}
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LocalFree(pida);
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}
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}
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return hr;
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}
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//+-------------------------------------------------------------------------
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//
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// Member: CShare::AddPages
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//
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// Derivation: IShellPropSheetExt
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//
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// Synopsis: (from shlobj.h)
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// "The explorer calls this member function when it finds a
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// registered property sheet extension for a particular type
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// of object. For each additional page, the extension creates
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// a page object by calling CreatePropertySheetPage API and
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// calls lpfnAddPage.
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//
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// Arguments: lpfnAddPage -- Specifies the callback function.
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// lParam -- Specifies the opaque handle to be passed to the
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// callback function.
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//
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// History: 4-Apr-95 BruceFo Created
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//
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//--------------------------------------------------------------------------
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STDMETHODIMP
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CShare::AddPages(
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LPFNADDPROPSHEETPAGE lpfnAddPage,
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LPARAM lParam
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)
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{
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CHECK_SIG(CShare);
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if (!_fMultipleSharesSelected && _OKToShare())
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{
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appAssert(_szPath[0]);
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//
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// Create a property sheet page object from a dialog box.
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//
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PWSTR pszPath = NewDup(_szPath);
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if (NULL == pszPath)
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{
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return E_OUTOFMEMORY;
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}
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// Now we have pszPath memory to delete
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BOOL bSimpleUI = IsSimpleUI();
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CShareBase* pPage = NULL;
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if (bSimpleUI)
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{
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pPage = new CSimpleSharingPage(pszPath);
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}
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else
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{
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pPage = new CSharingPropertyPage(pszPath, FALSE);
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}
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if (NULL == pPage)
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{
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delete[] pszPath;
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return E_OUTOFMEMORY;
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}
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// Now the pPage object owns pszPath memory. However, we have
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// pPage memory to delete.
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HRESULT hr = pPage->InitInstance();
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if (FAILED(hr))
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{
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pPage->Release();
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return E_OUTOFMEMORY;
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}
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PROPSHEETPAGE psp;
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psp.dwSize = sizeof(psp); // no extra data.
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psp.dwFlags = PSP_USEREFPARENT | PSP_USECALLBACK;
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psp.hInstance = g_hInstance;
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psp.pszTemplate = bSimpleUI ? MAKEINTRESOURCE(IDD_SIMPLE_SHARE_PROPERTIES) : MAKEINTRESOURCE(IDD_SHARE_PROPERTIES);
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psp.hIcon = NULL;
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psp.pszTitle = NULL;
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psp.pfnDlgProc = CShareBase::DlgProcPage;
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psp.lParam = (LPARAM)pPage; // transfer ownership
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psp.pfnCallback = CShareBase::PageCallback;
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psp.pcRefParent = &g_NonOLEDLLRefs;
|
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HPROPSHEETPAGE hpage = CreatePropertySheetPage(&psp);
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if (NULL == hpage)
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{
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// If CreatePropertySheetPage fails, we still have pPage memory
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// to delete.
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pPage->Release();
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return E_OUTOFMEMORY;
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}
|
||
|
|
|
||
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BOOL fAdded = (*lpfnAddPage)(hpage, lParam);
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|
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if (!fAdded)
|
||
|
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{
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// At this point, pPage memory, as the lParam of a PROPSHEETPAGE
|
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|
|
// that has been converted into an HPROPSHEETPAGE, is owned by the
|
||
|
|
// hpage. Calling DestroyPropertySheetPage will invoke the
|
||
|
|
// PageCallback function, subsequently destroying the pPage object,
|
||
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// and hence the pszPath object within it. Whew!
|
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|
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DestroyPropertySheetPage(hpage);
|
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return E_OUTOFMEMORY;
|
||
|
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}
|
||
|
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}
|
||
|
|
|
||
|
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return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CShare::ReplacePages
|
||
|
|
//
|
||
|
|
// Derivation: IShellPropSheetExt
|
||
|
|
//
|
||
|
|
// Synopsis: (From shlobj.h)
|
||
|
|
// "The explorer never calls this member of property sheet
|
||
|
|
// extensions. The explorer calls this member of control panel
|
||
|
|
// extensions, so that they can replace some of default control
|
||
|
|
// panel pages (such as a page of mouse control panel)."
|
||
|
|
//
|
||
|
|
// Arguments: uPageID -- Specifies the page to be replaced.
|
||
|
|
// lpfnReplace -- Specifies the callback function.
|
||
|
|
// lParam -- Specifies the opaque handle to be passed to the
|
||
|
|
// callback function.
|
||
|
|
//
|
||
|
|
// History: 4-Apr-95 BruceFo Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
STDMETHODIMP
|
||
|
|
CShare::ReplacePage(
|
||
|
|
UINT uPageID,
|
||
|
|
LPFNADDPROPSHEETPAGE lpfnReplaceWith,
|
||
|
|
LPARAM lParam
|
||
|
|
)
|
||
|
|
{
|
||
|
|
CHECK_SIG(CShare);
|
||
|
|
|
||
|
|
appAssert(!"CShare::ReplacePage called, not implemented");
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CShare::QueryContextMenu
|
||
|
|
//
|
||
|
|
// Derivation: IContextMenu
|
||
|
|
//
|
||
|
|
// Synopsis: Called when shell wants to add context menu items.
|
||
|
|
//
|
||
|
|
// History: 4-Apr-95 BruceFo Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
STDMETHODIMP
|
||
|
|
CShare::QueryContextMenu(
|
||
|
|
HMENU hmenu,
|
||
|
|
UINT indexMenu,
|
||
|
|
UINT idCmdFirst,
|
||
|
|
UINT idCmdLast,
|
||
|
|
UINT uFlags
|
||
|
|
)
|
||
|
|
{
|
||
|
|
CHECK_SIG(CShare);
|
||
|
|
|
||
|
|
if ((hmenu == NULL) || (uFlags & (CMF_DEFAULTONLY | CMF_VERBSONLY)))
|
||
|
|
{
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
int cNumberAdded = 0;
|
||
|
|
UINT idCmd = idCmdFirst;
|
||
|
|
|
||
|
|
// 159891 remove context menu if multiple shares selected
|
||
|
|
if (!_fMultipleSharesSelected && _OKToShare())
|
||
|
|
{
|
||
|
|
appAssert(_szPath[0]);
|
||
|
|
|
||
|
|
WCHAR szShareMenuItem[50];
|
||
|
|
LoadString(g_hInstance, IDS_SHARING, szShareMenuItem, ARRAYLEN(szShareMenuItem));
|
||
|
|
|
||
|
|
if (InsertMenu(hmenu, indexMenu, MF_STRING | MF_BYPOSITION, idCmd++, szShareMenuItem))
|
||
|
|
{
|
||
|
|
cNumberAdded++;
|
||
|
|
InsertMenu(hmenu, indexMenu, MF_SEPARATOR | MF_BYPOSITION, 0, NULL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return ResultFromScode(MAKE_SCODE(SEVERITY_SUCCESS, FACILITY_NULL, (USHORT)cNumberAdded));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CShare::InvokeCommand
|
||
|
|
//
|
||
|
|
// Derivation: IContextMenu
|
||
|
|
//
|
||
|
|
// Synopsis: Called when the shell wants to invoke a context menu item.
|
||
|
|
//
|
||
|
|
// History: 4-Apr-95 BruceFo Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
STDMETHODIMP
|
||
|
|
CShare::InvokeCommand(
|
||
|
|
LPCMINVOKECOMMANDINFO pici
|
||
|
|
)
|
||
|
|
{
|
||
|
|
CHECK_SIG(CShare);
|
||
|
|
|
||
|
|
HRESULT hr = E_INVALIDARG; // assume error.
|
||
|
|
|
||
|
|
if (0 == HIWORD(pici->lpVerb))
|
||
|
|
{
|
||
|
|
appAssert(_szPath[0]);
|
||
|
|
hr = ShowShareFolderUIW(pici->hwnd, _szPath);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// FEATURE: compare the strings if not a MAKEINTRESOURCE?
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CShare::GetCommandString
|
||
|
|
//
|
||
|
|
// Derivation: IContextMenu
|
||
|
|
//
|
||
|
|
// Synopsis: Called when the shell wants to get a help string or the
|
||
|
|
// menu string.
|
||
|
|
//
|
||
|
|
// History: 4-Apr-95 BruceFo Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
STDMETHODIMP
|
||
|
|
CShare::GetCommandString(
|
||
|
|
UINT_PTR idCmd,
|
||
|
|
UINT uType,
|
||
|
|
UINT* pwReserved,
|
||
|
|
LPSTR pszName,
|
||
|
|
UINT cchMax
|
||
|
|
)
|
||
|
|
{
|
||
|
|
CHECK_SIG(CShare);
|
||
|
|
|
||
|
|
if (uType == GCS_HELPTEXT)
|
||
|
|
{
|
||
|
|
LoadStringW(g_hInstance, IDS_MENUHELP, (LPWSTR)pszName, cchMax);
|
||
|
|
return NOERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
LoadStringW(g_hInstance, IDS_SHARING, (LPWSTR)pszName, cchMax);
|
||
|
|
return NOERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CShare::_OKToShare
|
||
|
|
//
|
||
|
|
// Synopsis: Determine if it is ok to share the current object. It stashes
|
||
|
|
// away the current path by querying the cached IDataObject.
|
||
|
|
//
|
||
|
|
// History: 4-Apr-95 BruceFo Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
CShare::_OKToShare(VOID)
|
||
|
|
{
|
||
|
|
CHECK_SIG(CShare);
|
||
|
|
|
||
|
|
if (!_fPathChecked)
|
||
|
|
{
|
||
|
|
_fPathChecked = TRUE;
|
||
|
|
_fOkToSharePath = (S_OK == CanShareFolderW(_szPath));
|
||
|
|
}
|
||
|
|
|
||
|
|
return _fOkToSharePath;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// dummy function to export to get linking to work
|
||
|
|
|
||
|
|
HRESULT SharePropDummyFunction()
|
||
|
|
{
|
||
|
|
return S_OK;
|
||
|
|
}
|