Sweden-Number/dlls/shlwapi/regstream.c

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/*
* SHRegOpenStream
*/
#include <string.h>
#include "winerror.h"
#include "winbase.h"
#include "winreg.h"
#include "shlobj.h"
#include "heap.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(shell);
typedef struct
{ ICOM_VFIELD(IStream);
DWORD ref;
HKEY hKey;
LPBYTE pbBuffer;
DWORD dwLength;
DWORD dwPos;
} ISHRegStream;
static struct ICOM_VTABLE(IStream) rstvt;
/**************************************************************************
* IStream_ConstructorA [internal]
*/
static IStream *IStream_ConstructorA(HKEY hKey, LPCSTR pszSubKey, LPCSTR pszValue, DWORD grfMode)
{
ISHRegStream* rstr;
DWORD dwType;
rstr = (ISHRegStream*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(ISHRegStream));
ICOM_VTBL(rstr)=&rstvt;
rstr->ref = 1;
if (!(RegOpenKeyExA (hKey, pszSubKey, 0, KEY_READ, &(rstr->hKey))))
{
if (!(RegQueryValueExA(rstr->hKey, pszValue,0,0,0,&(rstr->dwLength))))
{
/* read the binary data into the buffer */
if((rstr->pbBuffer = HeapAlloc(GetProcessHeap(),0,rstr->dwLength)))
{
if (!(RegQueryValueExA(rstr->hKey, pszValue,0,&dwType,rstr->pbBuffer,&(rstr->dwLength))))
{
if (dwType == REG_BINARY )
{
TRACE ("%p\n", rstr);
return (IStream*)rstr;
}
}
HeapFree (GetProcessHeap(),0,rstr->pbBuffer);
}
}
RegCloseKey(rstr->hKey);
}
HeapFree (GetProcessHeap(),0,rstr);
return NULL;
}
/**************************************************************************
* IStream_ConstructorW [internal]
*/
static IStream *IStream_ConstructorW(HKEY hKey, LPCWSTR pszSubKey, LPCWSTR pszValue, DWORD grfMode)
{
ISHRegStream* rstr;
DWORD dwType;
rstr = (ISHRegStream*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(ISHRegStream));
ICOM_VTBL(rstr)=&rstvt;
rstr->ref = 1;
if (!(RegOpenKeyExW (hKey, pszSubKey, 0, KEY_READ, &(rstr->hKey))))
{
if (!(RegQueryValueExW(rstr->hKey, pszValue,0,0,0,&(rstr->dwLength))))
{
/* read the binary data into the buffer */
if((rstr->pbBuffer = HeapAlloc(GetProcessHeap(),0,rstr->dwLength)))
{
if (!(RegQueryValueExW(rstr->hKey, pszValue,0,&dwType,rstr->pbBuffer,&(rstr->dwLength))))
{
if (dwType == REG_BINARY )
{
TRACE ("%p\n", rstr);
return (IStream*)rstr;
}
}
HeapFree (GetProcessHeap(),0,rstr->pbBuffer);
}
}
RegCloseKey(rstr->hKey);
}
HeapFree (GetProcessHeap(),0,rstr);
return NULL;
}
/**************************************************************************
* IStream_fnQueryInterface
*/
static HRESULT WINAPI IStream_fnQueryInterface(IStream *iface, REFIID riid, LPVOID *ppvObj)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)->(\n\tIID:\t%s,%p)\n",This,debugstr_guid(riid),ppvObj);
*ppvObj = NULL;
if(IsEqualIID(riid, &IID_IUnknown)) /*IUnknown*/
{ *ppvObj = This;
}
else if(IsEqualIID(riid, &IID_IStream)) /*IStream*/
{ *ppvObj = This;
}
if(*ppvObj)
{
IStream_AddRef((IStream*)*ppvObj);
TRACE("-- Interface: (%p)->(%p)\n",ppvObj,*ppvObj);
return S_OK;
}
TRACE("-- Interface: E_NOINTERFACE\n");
return E_NOINTERFACE;
}
/**************************************************************************
* IStream_fnAddRef
*/
static ULONG WINAPI IStream_fnAddRef(IStream *iface)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)->(count=%lu)\n",This, This->ref);
return ++(This->ref);
}
/**************************************************************************
* IStream_fnRelease
*/
static ULONG WINAPI IStream_fnRelease(IStream *iface)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)->()\n",This);
if (!--(This->ref))
{ TRACE(" destroying SHReg IStream (%p)\n",This);
if (This->pbBuffer)
HeapFree(GetProcessHeap(),0,This->pbBuffer);
if (This->hKey)
RegCloseKey(This->hKey);
HeapFree(GetProcessHeap(),0,This);
return 0;
}
return This->ref;
}
static HRESULT WINAPI IStream_fnRead (IStream * iface, void* pv, ULONG cb, ULONG* pcbRead)
{
ICOM_THIS(ISHRegStream, iface);
DWORD dwBytesToRead, dwBytesLeft;
TRACE("(%p)->(%p,0x%08lx,%p)\n",This, pv, cb, pcbRead);
if ( !pv )
return STG_E_INVALIDPOINTER;
dwBytesLeft = This->dwLength - This->dwPos;
if ( 0 >= dwBytesLeft ) /* end of buffer */
return S_FALSE;
dwBytesToRead = ( cb > dwBytesLeft) ? dwBytesLeft : cb;
memmove ( pv, (This->pbBuffer) + (This->dwPos), dwBytesToRead);
This->dwPos += dwBytesToRead; /* adjust pointer */
if (pcbRead)
*pcbRead = dwBytesToRead;
return S_OK;
}
static HRESULT WINAPI IStream_fnWrite (IStream * iface, const void* pv, ULONG cb, ULONG* pcbWritten)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnSeek (IStream * iface, LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER* plibNewPosition)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnSetSize (IStream * iface, ULARGE_INTEGER libNewSize)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnCopyTo (IStream * iface, IStream* pstm, ULARGE_INTEGER cb, ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnCommit (IStream * iface, DWORD grfCommitFlags)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnRevert (IStream * iface)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnLockRegion (IStream * iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnUnlockRegion (IStream * iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnStat (IStream * iface, STATSTG* pstatstg, DWORD grfStatFlag)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static HRESULT WINAPI IStream_fnClone (IStream * iface, IStream** ppstm)
{
ICOM_THIS(ISHRegStream, iface);
TRACE("(%p)\n",This);
return E_NOTIMPL;
}
static struct ICOM_VTABLE(IStream) rstvt =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
IStream_fnQueryInterface,
IStream_fnAddRef,
IStream_fnRelease,
IStream_fnRead,
IStream_fnWrite,
IStream_fnSeek,
IStream_fnSetSize,
IStream_fnCopyTo,
IStream_fnCommit,
IStream_fnRevert,
IStream_fnLockRegion,
IStream_fnUnlockRegion,
IStream_fnStat,
IStream_fnClone
};
/*************************************************************************
* SHOpenRegStreamA [SHLWAPI.@]
*/
IStream * WINAPI SHOpenRegStreamA(
HKEY hkey,
LPCSTR pszSubkey,
LPCSTR pszValue,
DWORD grfMode)
{
TRACE("(0x%08x,%s,%s,0x%08lx)\n",
hkey, pszSubkey, pszValue, grfMode);
return IStream_ConstructorA(hkey, pszSubkey, pszValue, grfMode);
}
/*************************************************************************
* SHOpenRegStreamW [SHLWAPI.@]
*/
IStream * WINAPI SHOpenRegStreamW(
HKEY hkey,
LPCWSTR pszSubkey,
LPCWSTR pszValue,
DWORD grfMode)
{
TRACE("(0x%08x,%s,%s,0x%08lx)\n",
hkey, debugstr_w(pszSubkey), debugstr_w(pszValue), grfMode);
return IStream_ConstructorW(hkey, pszSubkey, pszValue, grfMode);
}