Leaked source code of windows server 2003
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#include "shellprv.h"
#include "clsobj.h"
#include "dpa.h"
#include "ids.h"
#include "ole2dup.h"
/////////////////////////////////////////////////////////////////////////////
// CAutomationCM
class CAutomationCM :
public IContextMenu,
public IShellExtInit,
public IPersistPropertyBag
{
public:
// *** IUnknown methods ***
STDMETHOD(QueryInterface)(REFIID riid, void ** ppvObj);
STDMETHOD_(ULONG,AddRef)(void);
STDMETHOD_(ULONG,Release)(void);
// *** IContextMenu methods ***
STDMETHOD(QueryContextMenu)(THIS_
HMENU hmenu,
UINT indexMenu,
UINT idCmdFirst,
UINT idCmdLast,
UINT uFlags);
STDMETHOD(InvokeCommand)(THIS_
LPCMINVOKECOMMANDINFO pici);
STDMETHOD(GetCommandString)(THIS_
UINT_PTR idCmd,
UINT uType,
UINT * pwReserved,
LPSTR pszName,
UINT cchMax);
// *** IShellExtInit methods ***
STDMETHOD(Initialize)(THIS_
LPCITEMIDLIST pidlFolder,
IDataObject *pdtobj,
HKEY hkeyProgID) { return S_OK; }
// *** IPersist methods ***
STDMETHOD(GetClassID)(THIS_
CLSID *pclsid);
// *** IPersistPropertyBag methods ***
STDMETHOD(InitNew)(THIS);
STDMETHOD(Load)(THIS_
IPropertyBag *pbg,
IErrorLog *plog);
STDMETHOD(Save)(THIS_
IPropertyBag *pbg,
BOOL fClearDirty,
BOOL FSaveAllProperties) { return E_NOTIMPL; }
public:
CAutomationCM() : _cRef(1) { }
private:
~CAutomationCM();
static BOOL _DestroyVARIANTARG(VARIANTARG *pvarg, LPVOID)
{
::VariantClear(pvarg);
return TRUE;
}
enum {
// Any method with more than MAXPARAMS parameters should be taken
// outside and shot.
// Note: If you change MAXPARAMS, make sure that szParamN[] is
// big enough in IPersistPropertyBag::Load.
MAXPARAMS = 1000,
};
LONG _cRef;
IDispatch * _pdisp;
BSTR _bsProperties;
DISPID _dispid;
BOOL _fInitialized;
DISPPARAMS _dp;
CDSA<VARIANTARG> _dsaVarg;
TCHAR _szCommandName[MAX_PATH];
TCHAR _szMenuItem[MAX_PATH];
};
STDAPI CAutomationCM_CreateInstance(IUnknown * punkOuter, REFIID riid, void ** ppvOut)
{
// clsobj.c should've filtered out the aggregated scenario already
ASSERT(punkOuter == NULL);
*ppvOut = NULL;
CAutomationCM *pauto = new CAutomationCM;
if (!pauto)
return E_OUTOFMEMORY;
HRESULT hr = pauto->QueryInterface(riid, ppvOut);
pauto->Release();
return hr;
}
CAutomationCM::~CAutomationCM()
{
InitNew();
ASSERT(!_dsaVarg);
}
// *** IUnknown::QueryInterface ***
HRESULT CAutomationCM::QueryInterface(REFIID riid, void **ppv)
{
static const QITAB qit[] = {
QITABENT(CAutomationCM, IContextMenu), // IID_IContextMenu
QITABENT(CAutomationCM, IShellExtInit), // IID_IShellExtInit
QITABENT(CAutomationCM, IPersist), // IID_IPersist (base for IPersistPropertyBag)
QITABENT(CAutomationCM, IPersistPropertyBag), // IID_IPersistPropertyBag
{ 0 },
};
return QISearch(this, qit, riid, ppv);
}
// *** IUnknown::AddRef ***
STDMETHODIMP_(ULONG) CAutomationCM::AddRef()
{
return InterlockedIncrement(&_cRef);
}
// *** IUnknown::Release ***
STDMETHODIMP_(ULONG) CAutomationCM::Release()
{
ASSERT( 0 != _cRef );
ULONG cRef = InterlockedDecrement(&_cRef);
if ( 0 == cRef )
{
delete this;
}
return cRef;
}
// *** IPersist::GetClassID ***
HRESULT CAutomationCM::GetClassID(CLSID *pclsid)
{
*pclsid = CLSID_AutomationCM;
return S_OK;
}
// *** IPersistPropertyBag::InitNew ***
HRESULT CAutomationCM::InitNew()
{
ATOMICRELEASE(_pdisp);
::SysFreeString(_bsProperties);
_bsProperties = NULL;
// Free the DISPPARAMs
if (_dsaVarg)
{
_dsaVarg.DestroyCallback(_DestroyVARIANTARG, 0);
}
_dp.cArgs = 0;
_fInitialized = FALSE;
return S_OK;
}
//
// Property bag items:
//
// CLSID = object to CoCreate(IID_IDispatch)
// command = display name of command
// method = name of method (GetIDsOfNames)
// param1 .. paramN = parameters (up to MAXPARAMS)
//
// Parameters are passed as BSTRs (or whatever type SHPropertyBagOnRegKey
// returns.)
//
// It is the responsibility of the target IDispatch to coerce the types
// as appropriate.
//
// *** IPersistPropertyBag::Load ***
HRESULT CAutomationCM::Load(IPropertyBag *pbag, IErrorLog *plog)
{
HRESULT hr;
// Erase any old state
InitNew();
// Get the CLSID we are dispatching through
CLSID clsid;
hr = SHPropertyBag_ReadGUID(pbag, L"CLSID", &clsid);
if (SUCCEEDED(hr))
{
// Must use SHExCoCreateInstance to go through the approval/app compat layer
hr = SHExtCoCreateInstance(NULL, &clsid, NULL, IID_PPV_ARG(IDispatch, &_pdisp));
}
// Map the method to a DISPID
if (SUCCEEDED(hr))
{
BSTR bs;
hr = SHPropertyBag_ReadBSTR(pbag, L"method", &bs);
if (SUCCEEDED(hr))
{
LPOLESTR pname = bs;
hr = _pdisp->GetIDsOfNames(IID_NULL, &pname, 1, 0, &_dispid);
::SysFreeString(bs);
}
}
// Read in the parameters
if (SUCCEEDED(hr))
{
if (_dsaVarg.Create(4))
{
WCHAR szParamN[16]; // worst-case: "param1000"
VARIANT var;
while (_dsaVarg.GetItemCount() < MAXPARAMS)
{
wnsprintfW(szParamN, ARRAYSIZE(szParamN), L"param%d",
_dsaVarg.GetItemCount()+1);
VariantInit(&var);
var.vt = VT_BSTR;
if (FAILED(pbag->Read(szParamN, &var, NULL)))
{
// No more parameters
break;
}
if (_dsaVarg.AppendItem((VARIANTARG*)&var) < 0)
{
::VariantClear(&var);
hr = E_OUTOFMEMORY;
break;
}
}
}
else
{
// Could not create _dsaVarg
hr = E_OUTOFMEMORY;
}
}
// Get the command name
if (SUCCEEDED(hr))
{
hr = SHPropertyBag_ReadStr(pbag, L"command", _szCommandName, ARRAYSIZE(_szCommandName));
if (SUCCEEDED(hr))
{
hr = SHLoadIndirectString(_szCommandName, _szCommandName, ARRAYSIZE(_szCommandName), NULL);
}
}
// Get the properties string (optional)
if (SUCCEEDED(hr))
{
if (SUCCEEDED(SHPropertyBag_ReadBSTR(pbag, L"properties", &_bsProperties)))
{
ASSERT(_bsProperties);
// Ignore failure here; we'll detect it later
SHPropertyBag_ReadStr(pbag, L"propertiestext", _szMenuItem, ARRAYSIZE(_szMenuItem));
SHLoadIndirectString(_szMenuItem, _szMenuItem, ARRAYSIZE(_szMenuItem), NULL);
}
}
_fInitialized = SUCCEEDED(hr);
return hr;
}
// *** IContextMenu::QueryContextMenu ***
HRESULT CAutomationCM::QueryContextMenu(
HMENU hmenu,
UINT indexMenu,
UINT idCmdFirst,
UINT idCmdLast,
UINT uFlags)
{
if (!_fInitialized) return E_FAIL;
HRESULT hr;
// Must have room for two items (the command and possibly also Properties)
if (idCmdFirst + 1 <= idCmdLast)
{
if (InsertMenuW(hmenu, indexMenu, MF_BYPOSITION | MF_STRING,
idCmdFirst, _szCommandName))
{
if (_szMenuItem[0])
{
InsertMenuW(hmenu, indexMenu+1, MF_BYPOSITION | MF_STRING,
idCmdFirst+1, _szMenuItem);
}
}
hr = ResultFromShort(2); // number of items added
}
else
{
hr = E_FAIL; // unable to add items
}
return hr;
}
const LPCSTR c_rgAutoCMCommands[] = {
"open", // command 0
"properties", // command 1 - optional
};
// *** IContextMenu::InvokeCommand ***
HRESULT CAutomationCM::InvokeCommand(LPCMINVOKECOMMANDINFO pici)
{
if (!_fInitialized) return E_FAIL;
HRESULT hr;
int iCmd;
if (!IS_INTRESOURCE(pici->lpVerb))
{
// If this loop fails to find a match, iCmd will be out of range
// and will hit the "default:" in the switch statement below.
for (iCmd = 0; iCmd < ARRAYSIZE(c_rgAutoCMCommands) - 1; iCmd++)
{
if (lstrcmpiA(pici->lpVerb, c_rgAutoCMCommands[iCmd]) == 0)
{
break;
}
}
}
else
{
iCmd = PtrToLong(pici->lpVerb);
}
switch (iCmd)
{
case 0: // open
_dp.cArgs = _dsaVarg.GetItemCount();
_dp.rgvarg = _dp.cArgs ? _dsaVarg.GetItemPtr(0) : NULL;
hr = _pdisp->Invoke(_dispid, IID_NULL, 0, DISPATCH_METHOD, &_dp, NULL, NULL, NULL);
break;
case 1:
if (_bsProperties)
{
hr = ShellExecCmdLine(pici->hwnd, _bsProperties,
NULL, SW_SHOWNORMAL, NULL, 0) ? S_OK : E_FAIL;
}
else
{
hr = E_INVALIDARG;
}
break;
default:
hr = E_INVALIDARG;
break;
}
return hr;
}
// *** IContextMenu::GetCommandString ***
HRESULT CAutomationCM::GetCommandString(
UINT_PTR idCmd,
UINT uType,
UINT * pwReserved,
LPSTR pszName,
UINT cchMax)
{
if (!_fInitialized) return E_FAIL;
switch (uType)
{
case GCS_VERBA:
if (idCmd < ARRAYSIZE(c_rgAutoCMCommands))
{
SHAnsiToAnsi(c_rgAutoCMCommands[idCmd], (LPSTR)pszName, cchMax);
return S_OK;
}
break;
case GCS_VERBW:
if (idCmd < ARRAYSIZE(c_rgAutoCMCommands))
{
SHAnsiToUnicode(c_rgAutoCMCommands[idCmd], (LPWSTR)pszName, cchMax);
return S_OK;
}
break;
}
return E_NOTIMPL;
}