wine/dlls/ole32/compobj.c

/*
 *	COMPOBJ library
 *
 *	Copyright 1995	Martin von Loewis
 *	Copyright 1998	Justin Bradford
 *      Copyright 1999  Francis Beaudet
 *      Copyright 1999  Sylvain St-Germain
 *      Copyright 2002  Marcus Meissner
 *      Copyright 2004  Mike Hearn
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Note
 * 1. COINIT_MULTITHREADED is 0; it is the lack of COINIT_APARTMENTTHREADED
 *    Therefore do not test against COINIT_MULTITHREADED
 *
 * TODO list:           (items bunched together depend on each other)
 *
 *   - Rewrite the CoLockObjectExternal code, it does totally the wrong
 *     thing currently (should be controlling the stub manager)
 *
 *   - Free the ReservedForOle data in DllMain(THREAD_DETACH)
 *
 *   - Implement the service control manager (in rpcss) to keep track
 *     of registered class objects: ISCM::ServerRegisterClsid et al
 *   - Implement the OXID resolver so we don't need magic pipe names for
 *     clients and servers to meet up
 *   - Flip our marshalling on top of the RPC runtime transport API,
 *     so we no longer use named pipes to communicate
 *   - Rework threading so re-entrant calls don't need to be sent on
 *     the incoming pipe
 *   - Implement RPC thread affinity (should fix InstallShield painting
 *     problems)
 *
 *   - Implement IRemUnknown and marshalling for it, then use that for
 *     reffing/unreffing the stub manager from a proxy instead of our
 *     current hack of simply reaching into local process memory to do it,
 *     which obviously doesn't work inter-process.
 *
 *   - Make our custom marshalling use NDR to be wire compatible with
 *     native DCOM
 *     
 *        
 */

#include "config.h"

#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>

#define COBJMACROS
#define NONAMELESSUNION
#define NONAMELESSSTRUCT

#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "objbase.h"
#include "ole2.h"
#include "ole2ver.h"
#include "rpc.h"
#include "winerror.h"
#include "winreg.h"
#include "wownt32.h"
#include "wine/unicode.h"
#include "objbase.h"
#include "ole32_main.h"
#include "compobj_private.h"

#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(ole);

typedef LPCSTR LPCOLESTR16;

/****************************************************************************
 * This section defines variables internal to the COM module.
 *
 * TODO: Most of these things will have to be made thread-safe.
 */

static HRESULT COM_GetRegisteredClassObject(REFCLSID rclsid, DWORD dwClsContext, LPUNKNOWN*  ppUnk);
static void COM_RevokeAllClasses(void);
static void COM_ExternalLockFreeList(void);

const CLSID CLSID_StdGlobalInterfaceTable = { 0x00000323, 0, 0, {0xc0, 0, 0, 0, 0, 0, 0, 0x46} };

APARTMENT *MTA; /* protected by csApartment */
static struct list apts = LIST_INIT( apts ); /* protected by csApartment */

static CRITICAL_SECTION csApartment;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
    0, 0, &csApartment,
    { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
      0, 0, { 0, (DWORD)(__FILE__ ": csApartment") }
};
static CRITICAL_SECTION csApartment = { &critsect_debug, -1, 0, 0, 0, 0 };

/*
 * This lock count counts the number of times CoInitialize is called. It is
 * decreased every time CoUninitialize is called. When it hits 0, the COM
 * libraries are freed
 */
static LONG s_COMLockCount = 0;

/*
 * This linked list contains the list of registered class objects. These
 * are mostly used to register the factories for out-of-proc servers of OLE
 * objects.
 *
 * TODO: Make this data structure aware of inter-process communication. This
 *       means that parts of this will be exported to the Wine Server.
 */
typedef struct tagRegisteredClass
{
  CLSID     classIdentifier;
  LPUNKNOWN classObject;
  DWORD     runContext;
  DWORD     connectFlags;
  DWORD     dwCookie;
  LPSTREAM  pMarshaledData; /* FIXME: only really need to store OXID and IPID */
  struct tagRegisteredClass* nextClass;
} RegisteredClass;

static RegisteredClass* firstRegisteredClass = NULL;

static CRITICAL_SECTION csRegisteredClassList;
static CRITICAL_SECTION_DEBUG class_cs_debug =
{
    0, 0, &csRegisteredClassList,
    { &class_cs_debug.ProcessLocksList, &class_cs_debug.ProcessLocksList },
      0, 0, { 0, (DWORD)(__FILE__ ": csRegisteredClassList") }
};
static CRITICAL_SECTION csRegisteredClassList = { &class_cs_debug, -1, 0, 0, 0, 0 };

/*****************************************************************************
 * This section contains OpenDllList definitions
 *
 * The OpenDllList contains only handles of dll loaded by CoGetClassObject or
 * other functions that do LoadLibrary _without_ giving back a HMODULE.
 * Without this list these handles would never be freed.
 *
 * FIXME: a DLL that says OK when asked for unloading is unloaded in the
 * next unload-call but not before 600 sec.
 */

typedef struct tagOpenDll {
  HINSTANCE hLibrary;
  struct tagOpenDll *next;
} OpenDll;

static OpenDll *openDllList = NULL; /* linked list of open dlls */

static CRITICAL_SECTION csOpenDllList;
static CRITICAL_SECTION_DEBUG dll_cs_debug =
{
    0, 0, &csOpenDllList,
    { &dll_cs_debug.ProcessLocksList, &dll_cs_debug.ProcessLocksList },
      0, 0, { 0, (DWORD)(__FILE__ ": csOpenDllList") }
};
static CRITICAL_SECTION csOpenDllList = { &dll_cs_debug, -1, 0, 0, 0, 0 };

static const char aptWinClass[] = "WINE_OLE32_APT_CLASS";
static LRESULT CALLBACK COM_AptWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);

static void COMPOBJ_DLLList_Add(HANDLE hLibrary);
static void COMPOBJ_DllList_FreeUnused(int Timeout);

void COMPOBJ_InitProcess( void )
{
    WNDCLASSA wclass;

    /* Dispatching to the correct thread in an apartment is done through
     * window messages rather than RPC transports. When an interface is
     * marshalled into another apartment in the same process, a window of the
     * following class is created. The *caller* of CoMarshalInterface (ie the
     * application) is responsible for pumping the message loop in that thread.
     * The WM_USER messages which point to the RPCs are then dispatched to
     * COM_AptWndProc by the user's code from the apartment in which the interface
     * was unmarshalled.
     */
    memset(&wclass, 0, sizeof(wclass));
    wclass.lpfnWndProc = &COM_AptWndProc;
    wclass.hInstance = OLE32_hInstance;
    wclass.lpszClassName = aptWinClass;
    RegisterClassA(&wclass);
}

void COMPOBJ_UninitProcess( void )
{
    UnregisterClassA(aptWinClass, OLE32_hInstance);
}

/******************************************************************************
 * Manage apartments.
 */

/* creates an apartment structure which stores OLE apartment-local
 * information */
APARTMENT* COM_CreateApartment(DWORD model)
{
    APARTMENT *apt = COM_CurrentApt();

    if (!apt)
    {
        /* The multi-threaded apartment (MTA) contains zero or more threads interacting
         * with free threaded (ie thread safe) COM objects. There is only ever one MTA
         * in a process
         */
        EnterCriticalSection(&csApartment);
        if (!(model & COINIT_APARTMENTTHREADED) && MTA) /* See note 1 above */
        {
            TRACE("entering the multithreaded apartment %s\n", wine_dbgstr_longlong(MTA->oxid));
            apt = MTA;
            COM_ApartmentAddRef(apt);

            LeaveCriticalSection(&csApartment);

            COM_CurrentInfo()->apt = apt;
            return apt;
        }

        TRACE("creating new apartment, model=%ld\n", model);

        apt = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(APARTMENT));
        apt->tid = GetCurrentThreadId();
        DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
                        GetCurrentProcess(), &apt->thread,
                        THREAD_ALL_ACCESS, FALSE, 0);

        list_init(&apt->proxies);
        list_init(&apt->stubmgrs);
        apt->oidc = 1;
        apt->refs = 1;
        InitializeCriticalSection(&apt->cs);

        apt->model = model;

        if (model & COINIT_APARTMENTTHREADED)
        {
            /* FIXME: should be randomly generated by in an RPC call to rpcss */
            apt->oxid = ((OXID)GetCurrentProcessId() << 32) | GetCurrentThreadId();
            apt->win = CreateWindowA(aptWinClass, NULL, 0,
                                     0, 0, 0, 0,
                                     0, 0, OLE32_hInstance, NULL);
        }
        else
        {
            /* FIXME: should be randomly generated by in an RPC call to rpcss */
            apt->oxid = ((OXID)GetCurrentProcessId() << 32) | 0xcafe;
            MTA = apt;
        }

        TRACE("Created apartment on OXID %s\n", wine_dbgstr_longlong(apt->oxid));

        list_add_head(&apts, &apt->entry);
        LeaveCriticalSection(&csApartment);

        COM_CurrentInfo()->apt = apt;
    }

    return apt;
}

DWORD COM_ApartmentAddRef(struct apartment *apt)
{
    return InterlockedIncrement(&apt->refs);
}

DWORD COM_ApartmentRelease(struct apartment *apt)
{
    DWORD ret;

    EnterCriticalSection(&csApartment);

    ret = InterlockedDecrement(&apt->refs);
    /* destruction stuff that needs to happen under csApartment CS */
    if (ret == 0)
    {
        if (apt == MTA) MTA = NULL;
        list_remove(&apt->entry);
    }

    LeaveCriticalSection(&csApartment);

    if (ret == 0)
    {
        struct list *cursor, *cursor2;

        TRACE("destroying apartment %p, oxid %s\n", apt, wine_dbgstr_longlong(apt->oxid));

        MARSHAL_Disconnect_Proxies(apt);

        if (apt->win) DestroyWindow(apt->win);

        LIST_FOR_EACH_SAFE(cursor, cursor2, &apt->stubmgrs)
        {
            struct stub_manager *stubmgr = LIST_ENTRY(cursor, struct stub_manager, entry);
            /* release the implicit reference given by the fact that the
             * stub has external references (it must do since it is in the
             * stub manager list in the apartment and all non-apartment users
             * must have a ref on the apartment and so it cannot be destroyed).
             */
            stub_manager_int_release(stubmgr);
        }

        /* if this assert fires, then another thread took a reference to a
         * stub manager without taking a reference to the containing
         * apartment, which it must do. */
        assert(list_empty(&apt->stubmgrs));

        if (apt->filter) IUnknown_Release(apt->filter);

        DeleteCriticalSection(&apt->cs);
        CloseHandle(apt->thread);
        HeapFree(GetProcessHeap(), 0, apt);
    }

    return ret;
}

/* The given OXID must be local to this process: you cannot use
 * apartment windows to send RPCs to other processes. This all needs
 * to move to rpcrt4.
 *
 * The ref parameter is here mostly to ensure people remember that
 * they get one, you should normally take a ref for thread safety.
 */
APARTMENT *COM_ApartmentFromOXID(OXID oxid, BOOL ref)
{
    APARTMENT *result = NULL;
    struct list *cursor;

    EnterCriticalSection(&csApartment);
    LIST_FOR_EACH( cursor, &apts )
    {
        struct apartment *apt = LIST_ENTRY( cursor, struct apartment, entry );
        if (apt->oxid == oxid)
        {
            result = apt;
            if (ref) COM_ApartmentAddRef(result);
            break;
        }
    }
    LeaveCriticalSection(&csApartment);

    return result;
}

HWND COM_GetApartmentWin(OXID oxid, BOOL ref)
{
    APARTMENT *apt;

    apt = COM_ApartmentFromOXID(oxid, ref);
    if (!apt) return NULL;

    return apt->win;
}

/* Currently inter-thread marshalling is not fully implemented, so this does nothing */
static LRESULT CALLBACK COM_AptWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
  return DefWindowProcA(hWnd, msg, wParam, lParam);
}

/*****************************************************************************
 * This section contains OpenDllList implemantation
 */

static void COMPOBJ_DLLList_Add(HANDLE hLibrary)
{
    OpenDll *ptr;
    OpenDll *tmp;

    TRACE("\n");

    EnterCriticalSection( &csOpenDllList );

    if (openDllList == NULL) {
        /* empty list -- add first node */
        openDllList = (OpenDll*)HeapAlloc(GetProcessHeap(),0, sizeof(OpenDll));
	openDllList->hLibrary=hLibrary;
	openDllList->next = NULL;
    } else {
        /* search for this dll */
        int found = FALSE;
        for (ptr = openDllList; ptr->next != NULL; ptr=ptr->next) {
  	    if (ptr->hLibrary == hLibrary) {
	        found = TRUE;
		break;
	    }
        }
	if (!found) {
	    /* dll not found, add it */
 	    tmp = openDllList;
	    openDllList = (OpenDll*)HeapAlloc(GetProcessHeap(),0, sizeof(OpenDll));
	    openDllList->hLibrary = hLibrary;
	    openDllList->next = tmp;
	}
    }

    LeaveCriticalSection( &csOpenDllList );
}

static void COMPOBJ_DllList_FreeUnused(int Timeout)
{
    OpenDll *curr, *next, *prev = NULL;
    typedef HRESULT(*DllCanUnloadNowFunc)(void);
    DllCanUnloadNowFunc DllCanUnloadNow;

    TRACE("\n");

    EnterCriticalSection( &csOpenDllList );

    for (curr = openDllList; curr != NULL; ) {
	DllCanUnloadNow = (DllCanUnloadNowFunc) GetProcAddress(curr->hLibrary, "DllCanUnloadNow");

	if ( (DllCanUnloadNow != NULL) && (DllCanUnloadNow() == S_OK) ) {
	    next = curr->next;

	    TRACE("freeing %p\n", curr->hLibrary);
	    FreeLibrary(curr->hLibrary);

	    HeapFree(GetProcessHeap(), 0, curr);
	    if (curr == openDllList) {
		openDllList = next;
	    } else {
	      prev->next = next;
	    }

	    curr = next;
	} else {
	    prev = curr;
	    curr = curr->next;
	}
    }

    LeaveCriticalSection( &csOpenDllList );
}

/******************************************************************************
 *           CoBuildVersion [OLE32.@]
 *           CoBuildVersion [COMPOBJ.1]
 *
 * Gets the build version of the DLL.
 *
 * PARAMS
 *
 * RETURNS
 *	Current build version, hiword is majornumber, loword is minornumber
 */
DWORD WINAPI CoBuildVersion(void)
{
    TRACE("Returning version %d, build %d.\n", rmm, rup);
    return (rmm<<16)+rup;
}

/******************************************************************************
 *		CoInitialize	[OLE32.@]
 *
 * Initializes the COM libraries by calling CoInitializeEx with
 * COINIT_APARTMENTTHREADED, ie it enters a STA thread.
 *
 * PARAMS
 *  lpReserved [I] Pointer to IMalloc interface (obsolete, should be NULL).
 *
 * RETURNS
 *  Success: S_OK if not already initialized, S_FALSE otherwise.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *   CoInitializeEx
 */
HRESULT WINAPI CoInitialize(LPVOID lpReserved)
{
  /*
   * Just delegate to the newer method.
   */
  return CoInitializeEx(lpReserved, COINIT_APARTMENTTHREADED);
}

/******************************************************************************
 *		CoInitializeEx	[OLE32.@]
 *
 * Initializes the COM libraries.
 *
 * PARAMS
 *  lpReserved [I] Pointer to IMalloc interface (obsolete, should be NULL).
 *  dwCoInit   [I] One or more flags from the COINIT enumeration. See notes.
 *
 * RETURNS
 *  S_OK               if successful,
 *  S_FALSE            if this function was called already.
 *  RPC_E_CHANGED_MODE if a previous call to CoInitializeEx specified another
 *                     threading model.
 *
 * NOTES
 *
 * The behavior used to set the IMalloc used for memory management is
 * obsolete.
 * The dwCoInit parameter must specify of of the following apartment
 * threading models:
 *| COINIT_APARTMENTTHREADED - A single-threaded apartment (STA).
 *| COINIT_MULTITHREADED - A multi-threaded apartment (MTA).
 * The parameter may also specify zero or more of the following flags:
 *| COINIT_DISABLE_OLE1DDE - Don't use DDE for OLE1 support.
 *| COINIT_SPEED_OVER_MEMORY - Trade memory for speed.
 *
 * SEE ALSO
 *   CoUninitialize
 */
HRESULT WINAPI CoInitializeEx(LPVOID lpReserved, DWORD dwCoInit)
{
  HRESULT hr = S_OK;
  APARTMENT *apt;

  TRACE("(%p, %x)\n", lpReserved, (int)dwCoInit);

  if (lpReserved!=NULL)
  {
    ERR("(%p, %x) - Bad parameter passed-in %p, must be an old Windows Application\n", lpReserved, (int)dwCoInit, lpReserved);
  }

  /*
   * Check the lock count. If this is the first time going through the initialize
   * process, we have to initialize the libraries.
   *
   * And crank-up that lock count.
   */
  if (InterlockedExchangeAdd(&s_COMLockCount,1)==0)
  {
    /*
     * Initialize the various COM libraries and data structures.
     */
    TRACE("() - Initializing the COM libraries\n");

    /* we may need to defer this until after apartment initialisation */
    RunningObjectTableImpl_Initialize();
  }

  if (!(apt = COM_CurrentInfo()->apt))
  {
    apt = COM_CreateApartment(dwCoInit);
    if (!apt) return E_OUTOFMEMORY;
  }
  else if (dwCoInit != apt->model)
  {
    /* Changing the threading model after it's been set is illegal. If this warning is triggered by Wine
       code then we are probably using the wrong threading model to implement that API. */
    ERR("Attempt to change threading model of this apartment from 0x%lx to 0x%lx\n", apt->model, dwCoInit);
    COM_ApartmentRelease(apt);
    return RPC_E_CHANGED_MODE;
  }
  else
    hr = S_FALSE;

  COM_CurrentInfo()->inits++;

  return hr;
}

/* On COM finalization for a STA thread, the message queue is flushed to ensure no
   pending RPCs are ignored. Non-COM messages are discarded at this point.
 */
void COM_FlushMessageQueue(void)
{
    MSG message;
    APARTMENT *apt = COM_CurrentApt();

    if (!apt || !apt->win) return;

    TRACE("Flushing STA message queue\n");

    while (PeekMessageA(&message, NULL, 0, 0, PM_REMOVE))
    {
        if (message.hwnd != apt->win)
        {
            WARN("discarding message 0x%x for window %p\n", message.message, message.hwnd);
            continue;
        }

        TranslateMessage(&message);
        DispatchMessageA(&message);
    }
}

/***********************************************************************
 *           CoUninitialize   [OLE32.@]
 *
 * This method will decrement the refcount on the current apartment, freeing
 * the resources associated with it if it is the last thread in the apartment.
 * If the last apartment is freed, the function will additionally release
 * any COM resources associated with the process.
 *
 * PARAMS
 *
 * RETURNS
 *  Nothing.
 *
 * SEE ALSO
 *   CoInitializeEx
 */
void WINAPI CoUninitialize(void)
{
  struct oletls * info = COM_CurrentInfo();
  LONG lCOMRefCnt;

  TRACE("()\n");

  /* will only happen on OOM */
  if (!info) return;

  /* sanity check */
  if (!info->inits)
  {
    ERR("Mismatched CoUninitialize\n");
    return;
  }

  if (!--info->inits)
  {
    COM_ApartmentRelease(info->apt);
    info->apt = NULL;
  }

  /*
   * Decrease the reference count.
   * If we are back to 0 locks on the COM library, make sure we free
   * all the associated data structures.
   */
  lCOMRefCnt = InterlockedExchangeAdd(&s_COMLockCount,-1);
  if (lCOMRefCnt==1)
  {
    TRACE("() - Releasing the COM libraries\n");

    RunningObjectTableImpl_UnInitialize();

    /* Release the references to the registered class objects */
    COM_RevokeAllClasses();

    /* This will free the loaded COM Dlls  */
    CoFreeAllLibraries();

    /* This will free list of external references to COM objects */
    COM_ExternalLockFreeList();

    /* This ensures we deal with any pending RPCs */
    COM_FlushMessageQueue();
  }
  else if (lCOMRefCnt<1) {
    ERR( "CoUninitialize() - not CoInitialized.\n" );
    InterlockedExchangeAdd(&s_COMLockCount,1); /* restore the lock count. */
  }
}

/******************************************************************************
 *		CoDisconnectObject	[OLE32.@]
 *		CoDisconnectObject	[COMPOBJ.15]
 *
 * Disconnects all connections to this object from remote processes. Dispatches
 * pending RPCs while blocking new RPCs from occurring, and then calls
 * IMarshal::DisconnectObject on the given object.
 *
 * Typically called when the object server is forced to shut down, for instance by
 * the user.
 *
 * PARAMS
 *  lpUnk    [I] The object whose stub should be disconnected.
 *  reserved [I] Reserved. Should be set to 0.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoMarshalInterface, CoReleaseMarshalData, CoLockObjectExternal
 */
HRESULT WINAPI CoDisconnectObject( LPUNKNOWN lpUnk, DWORD reserved )
{
    FIXME("(%p, %lx): stub - probably harmless\n",lpUnk,reserved);
    return S_OK;
}

/******************************************************************************
 *		CoCreateGuid [OLE32.@]
 *
 * Simply forwards to UuidCreate in RPCRT4.
 *
 * PARAMS
 *  pguid [O] Points to the GUID to initialize.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *   UuidCreate
 */
HRESULT WINAPI CoCreateGuid(GUID *pguid)
{
    return UuidCreate(pguid);
}

/******************************************************************************
 *		CLSIDFromString	[OLE32.@]
 *		IIDFromString   [OLE32.@]
 *
 * Converts a unique identifier from its string representation into
 * the GUID struct.
 *
 * PARAMS
 *  idstr [I] The string representation of the GUID.
 *  id    [O] GUID converted from the string.
 *
 * RETURNS
 *   S_OK on success
 *   CO_E_CLASSSTRING if idstr is not a valid CLSID
 *
 * BUGS
 *
 * In Windows, if idstr is not a valid CLSID string then it gets
 * treated as a ProgID. Wine currently doesn't do this. If idstr is
 * NULL it's treated as an all-zero GUID.
 *
 * SEE ALSO
 *  StringFromCLSID
 */
HRESULT WINAPI __CLSIDFromStringA(LPCSTR idstr, CLSID *id)
{
  const BYTE *s = (const BYTE *) idstr;
  int	i;
  BYTE table[256];

  if (!s)
	  s = "{00000000-0000-0000-0000-000000000000}";
  else {  /* validate the CLSID string */

      if (strlen(s) != 38)
          return CO_E_CLASSSTRING;

      if ((s[0]!='{') || (s[9]!='-') || (s[14]!='-') || (s[19]!='-') || (s[24]!='-') || (s[37]!='}'))
          return CO_E_CLASSSTRING;

      for (i=1; i<37; i++) {
          if ((i == 9)||(i == 14)||(i == 19)||(i == 24)) continue;
          if (!(((s[i] >= '0') && (s[i] <= '9'))  ||
                ((s[i] >= 'a') && (s[i] <= 'f'))  ||
                ((s[i] >= 'A') && (s[i] <= 'F'))))
              return CO_E_CLASSSTRING;
      }
  }

  TRACE("%s -> %p\n", s, id);

  /* quick lookup table */
  memset(table, 0, 256);

  for (i = 0; i < 10; i++) {
    table['0' + i] = i;
  }
  for (i = 0; i < 6; i++) {
    table['A' + i] = i+10;
    table['a' + i] = i+10;
  }

  /* in form {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} */

  id->Data1 = (table[s[1]] << 28 | table[s[2]] << 24 | table[s[3]] << 20 | table[s[4]] << 16 |
               table[s[5]] << 12 | table[s[6]] << 8  | table[s[7]] << 4  | table[s[8]]);
  id->Data2 = table[s[10]] << 12 | table[s[11]] << 8 | table[s[12]] << 4 | table[s[13]];
  id->Data3 = table[s[15]] << 12 | table[s[16]] << 8 | table[s[17]] << 4 | table[s[18]];

  /* these are just sequential bytes */
  id->Data4[0] = table[s[20]] << 4 | table[s[21]];
  id->Data4[1] = table[s[22]] << 4 | table[s[23]];
  id->Data4[2] = table[s[25]] << 4 | table[s[26]];
  id->Data4[3] = table[s[27]] << 4 | table[s[28]];
  id->Data4[4] = table[s[29]] << 4 | table[s[30]];
  id->Data4[5] = table[s[31]] << 4 | table[s[32]];
  id->Data4[6] = table[s[33]] << 4 | table[s[34]];
  id->Data4[7] = table[s[35]] << 4 | table[s[36]];

  return S_OK;
}

/*****************************************************************************/

HRESULT WINAPI CLSIDFromString(LPOLESTR idstr, CLSID *id )
{
    char xid[40];
    HRESULT ret;

    if (!WideCharToMultiByte( CP_ACP, 0, idstr, -1, xid, sizeof(xid), NULL, NULL ))
        return CO_E_CLASSSTRING;


    ret = __CLSIDFromStringA(xid,id);
    if(ret != S_OK) { /* It appears a ProgID is also valid */
        ret = CLSIDFromProgID(idstr, id);
    }
    return ret;
}

/* Converts a GUID into the respective string representation. */
HRESULT WINE_StringFromCLSID(
	const CLSID *id,	/* [in] GUID to be converted */
	LPSTR idstr		/* [out] pointer to buffer to contain converted guid */
) {
  static const char *hex = "0123456789ABCDEF";
  char *s;
  int	i;

  if (!id)
	{ ERR("called with id=Null\n");
	  *idstr = 0x00;
	  return E_FAIL;
	}

  sprintf(idstr, "{%08lX-%04X-%04X-%02X%02X-",
	  id->Data1, id->Data2, id->Data3,
	  id->Data4[0], id->Data4[1]);
  s = &idstr[25];

  /* 6 hex bytes */
  for (i = 2; i < 8; i++) {
    *s++ = hex[id->Data4[i]>>4];
    *s++ = hex[id->Data4[i] & 0xf];
  }

  *s++ = '}';
  *s++ = '\0';

  TRACE("%p->%s\n", id, idstr);

  return S_OK;
}


/******************************************************************************
 *		StringFromCLSID	[OLE32.@]
 *		StringFromIID   [OLE32.@]
 *
 * Converts a GUID into the respective string representation.
 * The target string is allocated using the OLE IMalloc.
 *
 * PARAMS
 *  id    [I] the GUID to be converted.
 *  idstr [O] A pointer to a to-be-allocated pointer pointing to the resulting string.
 *
 * RETURNS
 *   S_OK
 *   E_FAIL
 *
 * SEE ALSO
 *  StringFromGUID2, CLSIDFromString
 */
HRESULT WINAPI StringFromCLSID(REFCLSID id, LPOLESTR *idstr)
{
	char            buf[80];
	HRESULT       ret;
	LPMALLOC	mllc;

	if ((ret = CoGetMalloc(0,&mllc)))
		return ret;

	ret=WINE_StringFromCLSID(id,buf);
	if (!ret) {
            DWORD len = MultiByteToWideChar( CP_ACP, 0, buf, -1, NULL, 0 );
            *idstr = IMalloc_Alloc( mllc, len * sizeof(WCHAR) );
            MultiByteToWideChar( CP_ACP, 0, buf, -1, *idstr, len );
	}
	return ret;
}

/******************************************************************************
 *		StringFromGUID2	[OLE32.@]
 *		StringFromGUID2	[COMPOBJ.76]
 *
 * Modified version of StringFromCLSID that allows you to specify max
 * buffer size.
 *
 * PARAMS
 *  id   [I] GUID to convert to string.
 *  str  [O] Buffer where the result will be stored.
 *  cmax [I] Size of the buffer in characters.
 *
 * RETURNS
 *	Success: The length of the resulting string in characters.
 *  Failure: 0.
 */
INT WINAPI StringFromGUID2(REFGUID id, LPOLESTR str, INT cmax)
{
  char		xguid[80];

  if (WINE_StringFromCLSID(id,xguid))
  	return 0;
  return MultiByteToWideChar( CP_ACP, 0, xguid, -1, str, cmax );
}

/******************************************************************************
 *               ProgIDFromCLSID [OLE32.@]
 *
 * Converts a class id into the respective program ID.
 *
 * PARAMS
 *  clsid        [I] Class ID, as found in registry.
 *  lplpszProgID [O] Associated ProgID.
 *
 * RETURNS
 *   S_OK
 *   E_OUTOFMEMORY
 *   REGDB_E_CLASSNOTREG if the given clsid has no associated ProgID
 */
HRESULT WINAPI ProgIDFromCLSID(REFCLSID clsid, LPOLESTR *lplpszProgID)
{
  char     strCLSID[50], *buf, *buf2;
  DWORD    buf2len;
  HKEY     xhkey;
  LPMALLOC mllc;
  HRESULT  ret = S_OK;

  WINE_StringFromCLSID(clsid, strCLSID);

  buf = HeapAlloc(GetProcessHeap(), 0, strlen(strCLSID)+14);
  sprintf(buf,"CLSID\\%s\\ProgID", strCLSID);
  if (RegOpenKeyA(HKEY_CLASSES_ROOT, buf, &xhkey))
    ret = REGDB_E_CLASSNOTREG;

  HeapFree(GetProcessHeap(), 0, buf);

  if (ret == S_OK)
  {
    buf2 = HeapAlloc(GetProcessHeap(), 0, 255);
    buf2len = 255;
    if (RegQueryValueA(xhkey, NULL, buf2, &buf2len))
      ret = REGDB_E_CLASSNOTREG;

    if (ret == S_OK)
    {
      if (CoGetMalloc(0,&mllc))
        ret = E_OUTOFMEMORY;
      else
      {
          DWORD len = MultiByteToWideChar( CP_ACP, 0, buf2, -1, NULL, 0 );
          *lplpszProgID = IMalloc_Alloc(mllc, len * sizeof(WCHAR) );
          MultiByteToWideChar( CP_ACP, 0, buf2, -1, *lplpszProgID, len );
      }
    }
    HeapFree(GetProcessHeap(), 0, buf2);
  }

  RegCloseKey(xhkey);
  return ret;
}

HRESULT WINAPI CLSIDFromProgID16(
	LPCOLESTR16 progid,	/* [in] program id as found in registry */
	LPCLSID riid		/* [out] associated CLSID */
) {
	char	*buf,buf2[80];
	DWORD	buf2len;
	HRESULT	err;
	HKEY	xhkey;

	buf = HeapAlloc(GetProcessHeap(),0,strlen(progid)+8);
	sprintf(buf,"%s\\CLSID",progid);
	if ((err=RegOpenKeyA(HKEY_CLASSES_ROOT,buf,&xhkey))) {
		HeapFree(GetProcessHeap(),0,buf);
                return CO_E_CLASSSTRING;
	}
	HeapFree(GetProcessHeap(),0,buf);
	buf2len = sizeof(buf2);
	if ((err=RegQueryValueA(xhkey,NULL,buf2,&buf2len))) {
		RegCloseKey(xhkey);
                return CO_E_CLASSSTRING;
	}
	RegCloseKey(xhkey);
	return __CLSIDFromStringA(buf2,riid);
}

/******************************************************************************
 *		CLSIDFromProgID	[OLE32.@]
 *		CLSIDFromProgID	[COMPOBJ.61]
 *
 * Converts a program id into the respective GUID.
 *
 * PARAMS
 *  progid [I] Unicode program ID, as found in registry.
 *  riid   [O] Associated CLSID.
 *
 * RETURNS
 *	Success: S_OK
 *  Failure: CO_E_CLASSSTRING - the given ProgID cannot be found.
 */
HRESULT WINAPI CLSIDFromProgID(LPCOLESTR progid, LPCLSID riid)
{
    static const WCHAR clsidW[] = { '\\','C','L','S','I','D',0 };
    char buf2[80];
    DWORD buf2len = sizeof(buf2);
    HKEY xhkey;

    WCHAR *buf = HeapAlloc( GetProcessHeap(),0,(strlenW(progid)+8) * sizeof(WCHAR) );
    strcpyW( buf, progid );
    strcatW( buf, clsidW );
    if (RegOpenKeyW(HKEY_CLASSES_ROOT,buf,&xhkey))
    {
        HeapFree(GetProcessHeap(),0,buf);
        return CO_E_CLASSSTRING;
    }
    HeapFree(GetProcessHeap(),0,buf);

    if (RegQueryValueA(xhkey,NULL,buf2,&buf2len))
    {
        RegCloseKey(xhkey);
        return CO_E_CLASSSTRING;
    }
    RegCloseKey(xhkey);
    return __CLSIDFromStringA(buf2,riid);
}



/*****************************************************************************
 *             CoGetPSClsid [OLE32.@]
 *
 * This function returns the CLSID of the proxy/stub factory that
 * implements IPSFactoryBuffer for the specified interface.
 *
 * PARAMS
 *  riid   [I] Interface whose proxy/stub CLSID is to be returned.
 *  pclsid [O] Where to store returned proxy/stub CLSID.
 * 
 * RETURNS
 *   S_OK
 *   E_OUTOFMEMORY
 *   E_INVALIDARG if no PSFactoryBuffer is associated with the IID, or it could not be parsed
 *
 * NOTES
 *
 * The standard marshaller activates the object with the CLSID
 * returned and uses the CreateProxy and CreateStub methods on its
 * IPSFactoryBuffer interface to construct the proxies and stubs for a
 * given object.
 *
 * CoGetPSClsid determines this CLSID by searching the
 * HKEY_CLASSES_ROOT\Interface\{string form of riid}\ProxyStubClsid32
 * in the registry and any interface id registered by
 * CoRegisterPSClsid within the current process.
 *
 * BUGS
 *
 * We only search the registry, not ids registered with
 * CoRegisterPSClsid.
 */
HRESULT WINAPI CoGetPSClsid(REFIID riid, CLSID *pclsid)
{
    char *buf, buf2[40];
    DWORD buf2len;
    HKEY xhkey;

    TRACE("() riid=%s, pclsid=%p\n", debugstr_guid(riid), pclsid);

    /* Get the input iid as a string */
    WINE_StringFromCLSID(riid, buf2);
    /* Allocate memory for the registry key we will construct.
       (length of iid string plus constant length of static text */
    buf = HeapAlloc(GetProcessHeap(), 0, strlen(buf2)+27);
    if (buf == NULL)
    {
       return (E_OUTOFMEMORY);
    }

    /* Construct the registry key we want */
    sprintf(buf,"Interface\\%s\\ProxyStubClsid32", buf2);

    /* Open the key.. */
    if (RegOpenKeyA(HKEY_CLASSES_ROOT, buf, &xhkey))
    {
       WARN("No PSFactoryBuffer object is registered for this IID\n");
       HeapFree(GetProcessHeap(),0,buf);
       return (E_INVALIDARG);
    }
    HeapFree(GetProcessHeap(),0,buf);

    /* ... Once we have the key, query the registry to get the
       value of CLSID as a string, and convert it into a
       proper CLSID structure to be passed back to the app */
    buf2len = sizeof(buf2);
    if ( (RegQueryValueA(xhkey,NULL,buf2,&buf2len)) )
    {
       RegCloseKey(xhkey);
       return E_INVALIDARG;
    }
    RegCloseKey(xhkey);

    /* We have the CLSid we want back from the registry as a string, so
       lets convert it into a CLSID structure */
    if ( (__CLSIDFromStringA(buf2,pclsid)) != NOERROR) {
       return E_INVALIDARG;
    }

    TRACE ("() Returning CLSID=%s\n", debugstr_guid(pclsid));
    return (S_OK);
}



/***********************************************************************
 *		WriteClassStm (OLE32.@)
 *
 * Writes a CLSID to a stream.
 *
 * PARAMS
 *  pStm   [I] Stream to write to.
 *  rclsid [I] CLSID to write.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI WriteClassStm(IStream *pStm,REFCLSID rclsid)
{
    TRACE("(%p,%p)\n",pStm,rclsid);

    if (rclsid==NULL)
        return E_INVALIDARG;

    return IStream_Write(pStm,rclsid,sizeof(CLSID),NULL);
}

/***********************************************************************
 *		ReadClassStm (OLE32.@)
 *
 * Reads a CLSID from a stream.
 *
 * PARAMS
 *  pStm   [I] Stream to read from.
 *  rclsid [O] CLSID to read.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI ReadClassStm(IStream *pStm,CLSID *pclsid)
{
    ULONG nbByte;
    HRESULT res;

    TRACE("(%p,%p)\n",pStm,pclsid);

    if (pclsid==NULL)
        return E_INVALIDARG;

    res = IStream_Read(pStm,(void*)pclsid,sizeof(CLSID),&nbByte);

    if (FAILED(res))
        return res;

    if (nbByte != sizeof(CLSID))
        return S_FALSE;
    else
        return S_OK;
}


/***
 * COM_GetRegisteredClassObject
 *
 * This internal method is used to scan the registered class list to
 * find a class object.
 *
 * Params:
 *   rclsid        Class ID of the class to find.
 *   dwClsContext  Class context to match.
 *   ppv           [out] returns a pointer to the class object. Complying
 *                 to normal COM usage, this method will increase the
 *                 reference count on this object.
 */
static HRESULT COM_GetRegisteredClassObject(
	REFCLSID    rclsid,
	DWORD       dwClsContext,
	LPUNKNOWN*  ppUnk)
{
  HRESULT hr = S_FALSE;
  RegisteredClass* curClass;

  EnterCriticalSection( &csRegisteredClassList );

  /*
   * Sanity check
   */
  assert(ppUnk!=0);

  /*
   * Iterate through the whole list and try to match the class ID.
   */
  curClass = firstRegisteredClass;

  while (curClass != 0)
  {
    /*
     * Check if we have a match on the class ID.
     */
    if (IsEqualGUID(&(curClass->classIdentifier), rclsid))
    {
      /*
       * Since we don't do out-of process or DCOM just right away, let's ignore the
       * class context.
       */

      /*
       * We have a match, return the pointer to the class object.
       */
      *ppUnk = curClass->classObject;

      IUnknown_AddRef(curClass->classObject);

      hr = S_OK;
      goto end;
    }

    /*
     * Step to the next class in the list.
     */
    curClass = curClass->nextClass;
  }

end:
  LeaveCriticalSection( &csRegisteredClassList );
  /*
   * If we get to here, we haven't found our class.
   */
  return hr;
}

/******************************************************************************
 *		CoRegisterClassObject	[OLE32.@]
 *
 * Registers the class object for a given class ID. Servers housed in EXE
 * files use this method instead of exporting DllGetClassObject to allow
 * other code to connect to their objects.
 *
 * PARAMS
 *  rclsid       [I] CLSID of the object to register.
 *  pUnk         [I] IUnknown of the object.
 *  dwClsContext [I] CLSCTX flags indicating the context in which to run the executable.
 *  flags        [I] REGCLS flags indicating how connections are made.
 *  lpdwRegister [I] A unique cookie that can be passed to CoRevokeClassObject.
 *
 * RETURNS
 *   S_OK on success,
 *   E_INVALIDARG if lpdwRegister or pUnk are NULL,
 *   CO_E_OBJISREG if the object is already registered. We should not return this.
 *
 * SEE ALSO
 *   CoRevokeClassObject, CoGetClassObject
 *
 * BUGS
 *  MSDN claims that multiple interface registrations are legal, but we
 *  can't do that with our current implementation.
 */
HRESULT WINAPI CoRegisterClassObject(
    REFCLSID rclsid,
    LPUNKNOWN pUnk,
    DWORD dwClsContext,
    DWORD flags,
    LPDWORD lpdwRegister)
{
  RegisteredClass* newClass;
  LPUNKNOWN        foundObject;
  HRESULT          hr;

  TRACE("(%s,%p,0x%08lx,0x%08lx,%p)\n",
	debugstr_guid(rclsid),pUnk,dwClsContext,flags,lpdwRegister);

  if ( (lpdwRegister==0) || (pUnk==0) )
    return E_INVALIDARG;

  if (!COM_CurrentApt())
  {
      ERR("COM was not initialized\n");
      return CO_E_NOTINITIALIZED;
  }

  *lpdwRegister = 0;

  /*
   * First, check if the class is already registered.
   * If it is, this should cause an error.
   */
  hr = COM_GetRegisteredClassObject(rclsid, dwClsContext, &foundObject);
  if (hr == S_OK) {
    IUnknown_Release(foundObject);
    return CO_E_OBJISREG;
  }

  newClass = HeapAlloc(GetProcessHeap(), 0, sizeof(RegisteredClass));
  if ( newClass == NULL )
    return E_OUTOFMEMORY;

  EnterCriticalSection( &csRegisteredClassList );

  newClass->classIdentifier = *rclsid;
  newClass->runContext      = dwClsContext;
  newClass->connectFlags    = flags;
  /*
   * Use the address of the chain node as the cookie since we are sure it's
   * unique. FIXME: not on 64-bit platforms.
   */
  newClass->dwCookie        = (DWORD)newClass;
  newClass->nextClass       = firstRegisteredClass;

  /*
   * Since we're making a copy of the object pointer, we have to increase its
   * reference count.
   */
  newClass->classObject     = pUnk;
  IUnknown_AddRef(newClass->classObject);

  firstRegisteredClass = newClass;
  LeaveCriticalSection( &csRegisteredClassList );

  *lpdwRegister = newClass->dwCookie;

  if (dwClsContext & CLSCTX_LOCAL_SERVER) {
      IClassFactory *classfac;

      hr = IUnknown_QueryInterface(newClass->classObject, &IID_IClassFactory,
                                   (LPVOID*)&classfac);
      if (hr) return hr;

      hr = CreateStreamOnHGlobal(0, TRUE, &newClass->pMarshaledData);
      if (hr) {
          FIXME("Failed to create stream on hglobal, %lx\n", hr);
          IUnknown_Release(classfac);
          return hr;
      }
      hr = CoMarshalInterface(newClass->pMarshaledData, &IID_IClassFactory,
                              (LPVOID)classfac, MSHCTX_LOCAL, NULL,
                              MSHLFLAGS_TABLESTRONG);
      if (hr) {
          FIXME("CoMarshalInterface failed, %lx!\n",hr);
          IUnknown_Release(classfac);
          return hr;
      }

      IUnknown_Release(classfac);

      RPC_StartLocalServer(&newClass->classIdentifier, newClass->pMarshaledData);
  }
  return S_OK;
}

/***********************************************************************
 *           CoRevokeClassObject [OLE32.@]
 *
 * Removes a class object from the class registry.
 *
 * PARAMS
 *  dwRegister [I] Cookie returned from CoRegisterClassObject().
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoRegisterClassObject
 */
HRESULT WINAPI CoRevokeClassObject(
        DWORD dwRegister)
{
  HRESULT hr = E_INVALIDARG;
  RegisteredClass** prevClassLink;
  RegisteredClass*  curClass;

  TRACE("(%08lx)\n",dwRegister);

  EnterCriticalSection( &csRegisteredClassList );

  /*
   * Iterate through the whole list and try to match the cookie.
   */
  curClass      = firstRegisteredClass;
  prevClassLink = &firstRegisteredClass;

  while (curClass != 0)
  {
    /*
     * Check if we have a match on the cookie.
     */
    if (curClass->dwCookie == dwRegister)
    {
      /*
       * Remove the class from the chain.
       */
      *prevClassLink = curClass->nextClass;

      /*
       * Release the reference to the class object.
       */
      IUnknown_Release(curClass->classObject);

      if (curClass->pMarshaledData)
      {
        LARGE_INTEGER zero;
        memset(&zero, 0, sizeof(zero));
        /* FIXME: stop local server thread */
        IStream_Seek(curClass->pMarshaledData, zero, SEEK_SET, NULL);
        CoReleaseMarshalData(curClass->pMarshaledData);
      }

      /*
       * Free the memory used by the chain node.
       */
      HeapFree(GetProcessHeap(), 0, curClass);

      hr = S_OK;
      goto end;
    }

    /*
     * Step to the next class in the list.
     */
    prevClassLink = &(curClass->nextClass);
    curClass      = curClass->nextClass;
  }

end:
  LeaveCriticalSection( &csRegisteredClassList );
  /*
   * If we get to here, we haven't found our class.
   */
  return hr;
}

/***********************************************************************
 *	compobj_RegReadPath	[internal]
 *
 *	Reads a registry value and expands it when necessary
 */
HRESULT compobj_RegReadPath(char * keyname, char * valuename, char * dst, DWORD dstlen)
{
	HRESULT hres;
	HKEY key;
	DWORD keytype;
	char src[MAX_PATH];
	DWORD dwLength = dstlen;

	if((hres = RegOpenKeyExA(HKEY_CLASSES_ROOT, keyname, 0, KEY_READ, &key)) == ERROR_SUCCESS) {
          if( (hres = RegQueryValueExA(key, NULL, NULL, &keytype, (LPBYTE)src, &dwLength)) == ERROR_SUCCESS ) {
            if (keytype == REG_EXPAND_SZ) {
              if (dstlen <= ExpandEnvironmentStringsA(src, dst, dstlen)) hres = ERROR_MORE_DATA;
            } else {
              lstrcpynA(dst, src, dstlen);
            }
	  }
          RegCloseKey (key);
	}
	return hres;
}

/***********************************************************************
 *           CoGetClassObject [COMPOBJ.7]
 *           CoGetClassObject [OLE32.@]
 *
 * FIXME.  If request allows of several options and there is a failure
 *         with one (other than not being registered) do we try the
 *         others or return failure?  (E.g. inprocess is registered but
 *         the DLL is not found but the server version works)
 */
HRESULT WINAPI CoGetClassObject(
    REFCLSID rclsid, DWORD dwClsContext, COSERVERINFO *pServerInfo,
    REFIID iid, LPVOID *ppv
) {
    LPUNKNOWN	regClassObject;
    HRESULT	hres = E_UNEXPECTED;
    char	xclsid[80];
    HINSTANCE hLibrary;
    typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
    DllGetClassObjectFunc DllGetClassObject;

    WINE_StringFromCLSID((LPCLSID)rclsid,xclsid);

    TRACE("\n\tCLSID:\t%s,\n\tIID:\t%s\n", debugstr_guid(rclsid), debugstr_guid(iid));

    if (pServerInfo) {
	FIXME("\tpServerInfo: name=%s\n",debugstr_w(pServerInfo->pwszName));
	FIXME("\t\tpAuthInfo=%p\n",pServerInfo->pAuthInfo);
    }

    /*
     * First, try and see if we can't match the class ID with one of the
     * registered classes.
     */
    if (S_OK == COM_GetRegisteredClassObject(rclsid, dwClsContext, &regClassObject))
    {
      /*
       * Get the required interface from the retrieved pointer.
       */
      hres = IUnknown_QueryInterface(regClassObject, iid, ppv);

      /*
       * Since QI got another reference on the pointer, we want to release the
       * one we already have. If QI was unsuccessful, this will release the object. This
       * is good since we are not returning it in the "out" parameter.
       */
      IUnknown_Release(regClassObject);

      return hres;
    }

    /* first try: in-process */
    if ((CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER) & dwClsContext) {
	char keyname[MAX_PATH];
	char dllpath[MAX_PATH+1];

	sprintf(keyname,"CLSID\\%s\\InprocServer32",xclsid);

	if ( compobj_RegReadPath(keyname, NULL, dllpath, sizeof(dllpath)) != ERROR_SUCCESS) {
	    /* failure: CLSID is not found in registry */
           WARN("class %s not registered inproc\n", xclsid);
            hres = REGDB_E_CLASSNOTREG;
	} else {
	  if ((hLibrary = LoadLibraryExA(dllpath, 0, LOAD_WITH_ALTERED_SEARCH_PATH)) == 0) {
	    /* failure: DLL could not be loaded */
	    ERR("couldn't load InprocServer32 dll %s\n", dllpath);
	    hres = E_ACCESSDENIED; /* FIXME: or should this be CO_E_DLLNOTFOUND? */
	  } else if (!(DllGetClassObject = (DllGetClassObjectFunc)GetProcAddress(hLibrary, "DllGetClassObject"))) {
	    /* failure: the dll did not export DllGetClassObject */
	    ERR("couldn't find function DllGetClassObject in %s\n", dllpath);
	    FreeLibrary( hLibrary );
	    hres = CO_E_DLLNOTFOUND;
	  } else {
	    /* OK: get the ClassObject */
	    COMPOBJ_DLLList_Add( hLibrary );
	    return DllGetClassObject(rclsid, iid, ppv);
	  }
	}
    }

    /* Next try out of process */
    if (CLSCTX_LOCAL_SERVER & dwClsContext)
    {
        return create_marshalled_proxy(rclsid,iid,ppv);
    }

    /* Finally try remote: this requires networked DCOM (a lot of work) */
    if (CLSCTX_REMOTE_SERVER & dwClsContext)
    {
        FIXME ("CLSCTX_REMOTE_SERVER not supported\n");
        hres = E_NOINTERFACE;
    }

    return hres;
}
/***********************************************************************
 *        CoResumeClassObjects (OLE32.@)
 *
 * Resumes all class objects registered with REGCLS_SUSPENDED.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoResumeClassObjects(void)
{
       FIXME("stub\n");
	return S_OK;
}

/***********************************************************************
 *        GetClassFile (OLE32.@)
 *
 * This function supplies the CLSID associated with the given filename.
 */
HRESULT WINAPI GetClassFile(LPCOLESTR filePathName,CLSID *pclsid)
{
    IStorage *pstg=0;
    HRESULT res;
    int nbElm, length, i;
    LONG sizeProgId;
    LPOLESTR *pathDec=0,absFile=0,progId=0;
    LPWSTR extension;
    static const WCHAR bkslashW[] = {'\\',0};
    static const WCHAR dotW[] = {'.',0};

    TRACE("%s, %p\n", debugstr_w(filePathName), pclsid);

    /* if the file contain a storage object the return the CLSID written by IStorage_SetClass method*/
    if((StgIsStorageFile(filePathName))==S_OK){

        res=StgOpenStorage(filePathName,NULL,STGM_READ | STGM_SHARE_DENY_WRITE,NULL,0,&pstg);

        if (SUCCEEDED(res))
            res=ReadClassStg(pstg,pclsid);

        IStorage_Release(pstg);

        return res;
    }
    /* if the file is not a storage object then attemps to match various bits in the file against a
       pattern in the registry. this case is not frequently used ! so I present only the psodocode for
       this case

     for(i=0;i<nFileTypes;i++)

        for(i=0;j<nPatternsForType;j++){

            PATTERN pat;
            HANDLE  hFile;

            pat=ReadPatternFromRegistry(i,j);
            hFile=CreateFileW(filePathName,,,,,,hFile);
            SetFilePosition(hFile,pat.offset);
            ReadFile(hFile,buf,pat.size,&r,NULL);
            if (memcmp(buf&pat.mask,pat.pattern.pat.size)==0){

                *pclsid=ReadCLSIDFromRegistry(i);
                return S_OK;
            }
        }
     */

    /* if the above strategies fail then search for the extension key in the registry */

    /* get the last element (absolute file) in the path name */
    nbElm=FileMonikerImpl_DecomposePath(filePathName,&pathDec);
    absFile=pathDec[nbElm-1];

    /* failed if the path represente a directory and not an absolute file name*/
    if (!lstrcmpW(absFile, bkslashW))
        return MK_E_INVALIDEXTENSION;

    /* get the extension of the file */
    extension = NULL;
    length=lstrlenW(absFile);
    for(i = length-1; (i >= 0) && *(extension = &absFile[i]) != '.'; i--)
        /* nothing */;

    if (!extension || !lstrcmpW(extension, dotW))
        return MK_E_INVALIDEXTENSION;

    res=RegQueryValueW(HKEY_CLASSES_ROOT, extension, NULL, &sizeProgId);

    /* get the progId associated to the extension */
    progId = CoTaskMemAlloc(sizeProgId);
    res = RegQueryValueW(HKEY_CLASSES_ROOT, extension, progId, &sizeProgId);

    if (res==ERROR_SUCCESS)
        /* return the clsid associated to the progId */
        res= CLSIDFromProgID(progId,pclsid);

    for(i=0; pathDec[i]!=NULL;i++)
        CoTaskMemFree(pathDec[i]);
    CoTaskMemFree(pathDec);

    CoTaskMemFree(progId);

    if (res==ERROR_SUCCESS)
        return res;

    return MK_E_INVALIDEXTENSION;
}
/***********************************************************************
 *           CoCreateInstance [COMPOBJ.13]
 *           CoCreateInstance [OLE32.@]
 */
HRESULT WINAPI CoCreateInstance(
	REFCLSID rclsid,
	LPUNKNOWN pUnkOuter,
	DWORD dwClsContext,
	REFIID iid,
	LPVOID *ppv)
{
  HRESULT hres;
  LPCLASSFACTORY lpclf = 0;

  if (!COM_CurrentApt()) return CO_E_NOTINITIALIZED;

  /*
   * Sanity check
   */
  if (ppv==0)
    return E_POINTER;

  /*
   * Initialize the "out" parameter
   */
  *ppv = 0;

  /*
   * The Standard Global Interface Table (GIT) object is a process-wide singleton.
   * Rather than create a class factory, we can just check for it here
   */
  if (IsEqualIID(rclsid, &CLSID_StdGlobalInterfaceTable)) {
    if (StdGlobalInterfaceTableInstance == NULL)
      StdGlobalInterfaceTableInstance = StdGlobalInterfaceTable_Construct();
    hres = IGlobalInterfaceTable_QueryInterface( (IGlobalInterfaceTable*) StdGlobalInterfaceTableInstance, iid, ppv);
    if (hres) return hres;

    TRACE("Retrieved GIT (%p)\n", *ppv);
    return S_OK;
  }

  /*
   * Get a class factory to construct the object we want.
   */
  hres = CoGetClassObject(rclsid,
			  dwClsContext,
			  NULL,
			  &IID_IClassFactory,
			  (LPVOID)&lpclf);

  if (FAILED(hres)) {
    FIXME("no classfactory created for CLSID %s, hres is 0x%08lx\n",
	  debugstr_guid(rclsid),hres);
    return hres;
  }

  /*
   * Create the object and don't forget to release the factory
   */
	hres = IClassFactory_CreateInstance(lpclf, pUnkOuter, iid, ppv);
	IClassFactory_Release(lpclf);
	if(FAILED(hres))
	  FIXME("no instance created for interface %s of class %s, hres is 0x%08lx\n",
		debugstr_guid(iid), debugstr_guid(rclsid),hres);

	return hres;
}

/***********************************************************************
 *           CoCreateInstanceEx [OLE32.@]
 */
HRESULT WINAPI CoCreateInstanceEx(
  REFCLSID      rclsid,
  LPUNKNOWN     pUnkOuter,
  DWORD         dwClsContext,
  COSERVERINFO* pServerInfo,
  ULONG         cmq,
  MULTI_QI*     pResults)
{
  IUnknown* pUnk = NULL;
  HRESULT   hr;
  ULONG     index;
  ULONG     successCount = 0;

  /*
   * Sanity check
   */
  if ( (cmq==0) || (pResults==NULL))
    return E_INVALIDARG;

  if (pServerInfo!=NULL)
    FIXME("() non-NULL pServerInfo not supported!\n");

  /*
   * Initialize all the "out" parameters.
   */
  for (index = 0; index < cmq; index++)
  {
    pResults[index].pItf = NULL;
    pResults[index].hr   = E_NOINTERFACE;
  }

  /*
   * Get the object and get its IUnknown pointer.
   */
  hr = CoCreateInstance(rclsid,
			pUnkOuter,
			dwClsContext,
			&IID_IUnknown,
			(VOID**)&pUnk);

  if (hr)
    return hr;

  /*
   * Then, query for all the interfaces requested.
   */
  for (index = 0; index < cmq; index++)
  {
    pResults[index].hr = IUnknown_QueryInterface(pUnk,
						 pResults[index].pIID,
						 (VOID**)&(pResults[index].pItf));

    if (pResults[index].hr == S_OK)
      successCount++;
  }

  /*
   * Release our temporary unknown pointer.
   */
  IUnknown_Release(pUnk);

  if (successCount == 0)
    return E_NOINTERFACE;

  if (successCount!=cmq)
    return CO_S_NOTALLINTERFACES;

  return S_OK;
}

/***********************************************************************
 *           CoLoadLibrary (OLE32.@)
 *
 * Loads a library.
 *
 * PARAMS
 *  lpszLibName [I] Path to library.
 *  bAutoFree   [I] Whether the library should automatically be freed.
 *
 * RETURNS
 *  Success: Handle to loaded library.
 *  Failure: NULL.
 *
 * SEE ALSO
 *  CoFreeLibrary, CoFreeAllLibraries, CoFreeUnusedLibraries
 */
HINSTANCE WINAPI CoLoadLibrary(LPOLESTR lpszLibName, BOOL bAutoFree)
{
    TRACE("(%s, %d)\n", debugstr_w(lpszLibName), bAutoFree);

    return LoadLibraryExW(lpszLibName, 0, LOAD_WITH_ALTERED_SEARCH_PATH);
}

/***********************************************************************
 *           CoFreeLibrary [OLE32.@]
 *
 * Unloads a library from memory.
 *
 * PARAMS
 *  hLibrary [I] Handle to library to unload.
 *
 * RETURNS
 *  Nothing
 *
 * SEE ALSO
 *  CoLoadLibrary, CoFreeAllLibraries, CoFreeUnusedLibraries
 */
void WINAPI CoFreeLibrary(HINSTANCE hLibrary)
{
    FreeLibrary(hLibrary);
}


/***********************************************************************
 *           CoFreeAllLibraries [OLE32.@]
 *
 * Function for backwards compatibility only. Does nothing.
 *
 * RETURNS
 *  Nothing.
 *
 * SEE ALSO
 *  CoLoadLibrary, CoFreeLibrary, CoFreeUnusedLibraries
 */
void WINAPI CoFreeAllLibraries(void)
{
    /* NOP */
}


/***********************************************************************
 *           CoFreeUnusedLibraries [OLE32.@]
 *           CoFreeUnusedLibraries [COMPOBJ.17]
 *
 * Frees any unused libraries. Unused are identified as those that return
 * S_OK from their DllCanUnloadNow function.
 *
 * RETURNS
 *  Nothing.
 *
 * SEE ALSO
 *  CoLoadLibrary, CoFreeAllLibraries, CoFreeLibrary
 */
void WINAPI CoFreeUnusedLibraries(void)
{
    /* FIXME: Calls to CoFreeUnusedLibraries from any thread always route
     * through the main apartment's thread to call DllCanUnloadNow */
    COMPOBJ_DllList_FreeUnused(0);
}

/***********************************************************************
 *           CoFileTimeNow [OLE32.@]
 *           CoFileTimeNow [COMPOBJ.82]
 *
 * Retrieves the current time in FILETIME format.
 *
 * PARAMS
 *  lpFileTime [O] The current time.
 *
 * RETURNS
 *	S_OK.
 */
HRESULT WINAPI CoFileTimeNow( FILETIME *lpFileTime )
{
    GetSystemTimeAsFileTime( lpFileTime );
    return S_OK;
}

static void COM_RevokeAllClasses()
{
  EnterCriticalSection( &csRegisteredClassList );

  while (firstRegisteredClass!=0)
  {
    CoRevokeClassObject(firstRegisteredClass->dwCookie);
  }

  LeaveCriticalSection( &csRegisteredClassList );
}

/****************************************************************************
 *  COM External Lock methods implementation
 *
 *  This api provides a linked list to managed external references to
 *  COM objects.
 *
 *  The public interface consists of three calls:
 *      COM_ExternalLockAddRef
 *      COM_ExternalLockRelease
 *      COM_ExternalLockFreeList
 */

#define EL_END_OF_LIST 0
#define EL_NOT_FOUND   0

/*
 * Declaration of the static structure that manage the
 * external lock to COM  objects.
 */
typedef struct COM_ExternalLock     COM_ExternalLock;
typedef struct COM_ExternalLockList COM_ExternalLockList;

struct COM_ExternalLock
{
  IUnknown         *pUnk;     /* IUnknown referenced */
  ULONG            uRefCount; /* external lock counter to IUnknown object*/
  COM_ExternalLock *next;     /* Pointer to next element in list */
};

struct COM_ExternalLockList
{
  COM_ExternalLock *head;     /* head of list */
};

/*
 * Declaration and initialization of the static structure that manages
 * the external lock to COM objects.
 */
static COM_ExternalLockList elList = { EL_END_OF_LIST };

/*
 * Private methods used to managed the linked list
 */


static COM_ExternalLock* COM_ExternalLockLocate(
  COM_ExternalLock *element,
  IUnknown         *pUnk);

/****************************************************************************
 * Internal - Insert a new IUnknown* to the linked list
 */
static BOOL COM_ExternalLockInsert(
  IUnknown *pUnk)
{
  COM_ExternalLock *newLock      = NULL;
  COM_ExternalLock *previousHead = NULL;

  /*
   * Allocate space for the new storage object
   */
  newLock = HeapAlloc(GetProcessHeap(), 0, sizeof(COM_ExternalLock));

  if (newLock!=NULL) {
    if ( elList.head == EL_END_OF_LIST ) {
      elList.head = newLock;    /* The list is empty */
    } else {
      /* insert does it at the head */
      previousHead  = elList.head;
      elList.head = newLock;
    }

    /* Set new list item data member */
    newLock->pUnk      = pUnk;
    newLock->uRefCount = 1;
    newLock->next      = previousHead;

    return TRUE;
  }
  return FALSE;
}

/****************************************************************************
 * Internal - Method that removes an item from the linked list.
 */
static void COM_ExternalLockDelete(
  COM_ExternalLock *itemList)
{
  COM_ExternalLock *current = elList.head;

  if ( current == itemList ) {
    /* this section handles the deletion of the first node */
    elList.head = itemList->next;
    HeapFree( GetProcessHeap(), 0, itemList);
  } else {
    do {
      if ( current->next == itemList ){   /* We found the item to free  */
        current->next = itemList->next;  /* readjust the list pointers */
        HeapFree( GetProcessHeap(), 0, itemList);
        break;
      }

      /* Skip to the next item */
      current = current->next;

    } while ( current != EL_END_OF_LIST );
  }
}

/****************************************************************************
 * Internal - Recursivity agent for IUnknownExternalLockList_Find
 *
 * NOTES: how long can the list be ?? (recursive!!!)
 */
static COM_ExternalLock* COM_ExternalLockLocate( COM_ExternalLock *element, IUnknown *pUnk)
{
  if ( element == EL_END_OF_LIST )
    return EL_NOT_FOUND;
  else if ( element->pUnk == pUnk )    /* We found it */
    return element;
  else                                 /* Not the right guy, keep on looking */
    return COM_ExternalLockLocate( element->next, pUnk);
}

/****************************************************************************
 * Public - Method that increments the count for a IUnknown* in the linked
 * list.  The item is inserted if not already in the list.
 */
static void COM_ExternalLockAddRef(IUnknown *pUnk)
{
  COM_ExternalLock *externalLock = COM_ExternalLockLocate(elList.head, pUnk);

  /*
   * Add an external lock to the object. If it was already externally
   * locked, just increase the reference count. If it was not.
   * add the item to the list.
   */
  if ( externalLock == EL_NOT_FOUND )
    COM_ExternalLockInsert(pUnk);
  else
    externalLock->uRefCount++;

  /*
   * Add an internal lock to the object
   */
  IUnknown_AddRef(pUnk);
}

/****************************************************************************
 * Public - Method that decrements the count for a IUnknown* in the linked
 * list.  The item is removed from the list if its count end up at zero or if
 * bRelAll is TRUE.
 */
static void COM_ExternalLockRelease(
  IUnknown *pUnk,
  BOOL   bRelAll)
{
  COM_ExternalLock *externalLock = COM_ExternalLockLocate(elList.head, pUnk);

  if ( externalLock != EL_NOT_FOUND ) {
    do {
      externalLock->uRefCount--;  /* release external locks      */
      IUnknown_Release(pUnk);     /* release local locks as well */

      if ( bRelAll == FALSE ) break;  /* perform single release */

    } while ( externalLock->uRefCount > 0 );

    if ( externalLock->uRefCount == 0 )  /* get rid of the list entry */
      COM_ExternalLockDelete(externalLock);
  }
}
/****************************************************************************
 * Public - Method that frees the content of the list.
 */
static void COM_ExternalLockFreeList()
{
  COM_ExternalLock *head;

  head = elList.head;                 /* grab it by the head             */
  while ( head != EL_END_OF_LIST ) {
    COM_ExternalLockDelete(head);     /* get rid of the head stuff       */
    head = elList.head;               /* get the new head...             */
  }
}

/****************************************************************************
 * Public - Method that dump the content of the list.
 */
void COM_ExternalLockDump()
{
  COM_ExternalLock *current = elList.head;

  DPRINTF("\nExternal lock list contains:\n");

  while ( current != EL_END_OF_LIST ) {
    DPRINTF( "\t%p with %lu references count.\n", current->pUnk, current->uRefCount);

    /* Skip to the next item */
    current = current->next;
  }
}

/******************************************************************************
 *		CoLockObjectExternal	[OLE32.@]
 *
 * Increments or decrements the external reference count of a stub object.
 *
 * PARAMS
 *  pUnk                [I] Stub object.
 *  fLock               [I] If TRUE then increments the external ref-count,
 *                          otherwise decrements.
 *  fLastUnlockReleases [I] If TRUE then the last unlock has the effect of
 *                          calling CoDisconnectObject.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoLockObjectExternal(
    LPUNKNOWN pUnk,		/* */
    BOOL fLock,		/* [in] do lock */
    BOOL fLastUnlockReleases) /* [in] unlock all */
{
    TRACE("pUnk=%p, fLock=%s, fLastUnlockReleases=%s\n",
          pUnk, fLock ? "TRUE" : "FALSE", fLastUnlockReleases ? "TRUE" : "FALSE");

	if (fLock) {
            /*
             * Increment the external lock coutner, COM_ExternalLockAddRef also
             * increment the object's internal lock counter.
             */
	    COM_ExternalLockAddRef( pUnk);
        } else {
            /*
             * Decrement the external lock coutner, COM_ExternalLockRelease also
             * decrement the object's internal lock counter.
             */
            COM_ExternalLockRelease( pUnk, fLastUnlockReleases);
        }

        return S_OK;
}

/***********************************************************************
 *           CoInitializeWOW (OLE32.@)
 *
 * WOW equivalent of CoInitialize?
 *
 * PARAMS
 *  x [I] Unknown.
 *  y [I] Unknown.
 *
 * RETURNS
 *  Unknown.
 */
HRESULT WINAPI CoInitializeWOW(DWORD x,DWORD y)
{
    FIXME("(0x%08lx,0x%08lx),stub!\n",x,y);
    return 0;
}

/***********************************************************************
 *           CoGetState [OLE32.@]
 *
 * Retrieves the thread state object previously stored by CoSetState().
 *
 * PARAMS
 *  ppv [I] Address where pointer to object will be stored.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: E_OUTOFMEMORY.
 *
 * NOTES
 *  Crashes on all invalid ppv addresses, including NULL.
 *  If the function returns a non-NULL object then the caller must release its
 *  reference on the object when the object is no longer required.
 *
 * SEE ALSO
 *  CoSetState().
 */
HRESULT WINAPI CoGetState(IUnknown ** ppv)
{
    struct oletls *info = COM_CurrentInfo();
    if (!info) return E_OUTOFMEMORY;

    *ppv = NULL;

    if (info->state)
    {
        IUnknown_AddRef(info->state);
        *ppv = info->state;
        TRACE("apt->state=%p\n", info->state);
    }

    return S_OK;
}

/***********************************************************************
 *           CoSetState [OLE32.@]
 *
 * Sets the thread state object.
 *
 * PARAMS
 *  pv [I] Pointer to state object to be stored.
 *
 * NOTES
 *  The system keeps a reference on the object while the object stored.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: E_OUTOFMEMORY.
 */
HRESULT WINAPI CoSetState(IUnknown * pv)
{
    struct oletls *info = COM_CurrentInfo();
    if (!info) return E_OUTOFMEMORY;

    if (pv) IUnknown_AddRef(pv);

    if (info->state)
    {
        TRACE("-- release %p now\n", info->state);
        IUnknown_Release(info->state);
    }

    info->state = pv;

    return S_OK;
}


/******************************************************************************
 *              OleGetAutoConvert        [OLE32.@]
 */
HRESULT WINAPI OleGetAutoConvert(REFCLSID clsidOld, LPCLSID pClsidNew)
{
    HKEY hkey = 0;
    char buf[200];
    WCHAR wbuf[200];
    DWORD len;
    HRESULT res = S_OK;

    sprintf(buf,"CLSID\\");WINE_StringFromCLSID(clsidOld,&buf[6]);
    if (RegOpenKeyA(HKEY_CLASSES_ROOT,buf,&hkey))
    {
        res = REGDB_E_CLASSNOTREG;
	goto done;
    }
    len = 200;
    /* we can just query for the default value of AutoConvertTo key like that,
       without opening the AutoConvertTo key and querying for NULL (default) */
    if (RegQueryValueA(hkey,"AutoConvertTo",buf,&len))
    {
        res = REGDB_E_KEYMISSING;
	goto done;
    }
    MultiByteToWideChar( CP_ACP, 0, buf, -1, wbuf, sizeof(wbuf)/sizeof(WCHAR) );
    CLSIDFromString(wbuf,pClsidNew);
done:
    if (hkey) RegCloseKey(hkey);
    return res;
}

/******************************************************************************
 *              CoTreatAsClass        [OLE32.@]
 *
 * Sets the TreatAs value of a class.
 *
 * PARAMS
 *  clsidOld [I] Class to set TreatAs value on.
 *  clsidNew [I] The class the clsidOld should be treated as.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoGetTreatAsClass
 */
HRESULT WINAPI CoTreatAsClass(REFCLSID clsidOld, REFCLSID clsidNew)
{
    HKEY hkey = 0;
    char buf[47];
    char szClsidNew[39];
    HRESULT res = S_OK;
    char auto_treat_as[39];
    LONG auto_treat_as_size = sizeof(auto_treat_as);
    CLSID id;

    sprintf(buf,"CLSID\\");WINE_StringFromCLSID(clsidOld,&buf[6]);
    WINE_StringFromCLSID(clsidNew, szClsidNew);
    if (RegOpenKeyA(HKEY_CLASSES_ROOT,buf,&hkey))
    {
        res = REGDB_E_CLASSNOTREG;
	goto done;
    }
    if (!memcmp( clsidOld, clsidNew, sizeof(*clsidOld) ))
    {
       if (!RegQueryValueA(hkey, "AutoTreatAs", auto_treat_as, &auto_treat_as_size) &&
           !__CLSIDFromStringA(auto_treat_as, &id))
       {
           if (RegSetValueA(hkey, "TreatAs", REG_SZ, auto_treat_as, strlen(auto_treat_as)+1))
           {
               res = REGDB_E_WRITEREGDB;
               goto done;
           }
       }
       else
       {
           RegDeleteKeyA(hkey, "TreatAs");
           goto done;
       }
    }
    else if (RegSetValueA(hkey, "TreatAs", REG_SZ, szClsidNew, strlen(szClsidNew)+1))
    {
       res = REGDB_E_WRITEREGDB;
	goto done;
    }

done:
    if (hkey) RegCloseKey(hkey);
    return res;
}

/******************************************************************************
 *              CoGetTreatAsClass        [OLE32.@]
 *
 * Gets the TreatAs value of a class.
 *
 * PARAMS
 *  clsidOld [I] Class to get the TreatAs value of.
 *  clsidNew [I] The class the clsidOld should be treated as.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoSetTreatAsClass
 */
HRESULT WINAPI CoGetTreatAsClass(REFCLSID clsidOld, LPCLSID clsidNew)
{
    HKEY hkey = 0;
    char buf[200], szClsidNew[200];
    HRESULT res = S_OK;
    LONG len = sizeof(szClsidNew);

    FIXME("(%s,%p)\n", debugstr_guid(clsidOld), clsidNew);
    sprintf(buf,"CLSID\\");WINE_StringFromCLSID(clsidOld,&buf[6]);
    memcpy(clsidNew,clsidOld,sizeof(CLSID)); /* copy over old value */

    if (RegOpenKeyA(HKEY_CLASSES_ROOT,buf,&hkey))
    {
        res = REGDB_E_CLASSNOTREG;
	goto done;
    }
    if (RegQueryValueA(hkey, "TreatAs", szClsidNew, &len))
    {
        res = S_FALSE;
	goto done;
    }
    res = __CLSIDFromStringA(szClsidNew,clsidNew);
    if (FAILED(res))
    	FIXME("Failed CLSIDFromStringA(%s), hres %lx?\n",szClsidNew,res);
done:
    if (hkey) RegCloseKey(hkey);
    return res;

}

/******************************************************************************
 *		CoGetCurrentProcess	[OLE32.@]
 *		CoGetCurrentProcess	[COMPOBJ.34]
 *
 * Gets the current process ID.
 *
 * RETURNS
 *  The current process ID.
 *
 * NOTES
 *   Is DWORD really the correct return type for this function?
 */
DWORD WINAPI CoGetCurrentProcess(void)
{
	return GetCurrentProcessId();
}

/******************************************************************************
 *		CoRegisterMessageFilter	[OLE32.@]
 *
 * Registers a message filter.
 *
 * PARAMS
 *  lpMessageFilter [I] Pointer to interface.
 *  lplpMessageFilter [O] Indirect pointer to prior instance if non-NULL.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoRegisterMessageFilter(
    LPMESSAGEFILTER lpMessageFilter,
    LPMESSAGEFILTER *lplpMessageFilter)
{
    FIXME("stub\n");
    if (lplpMessageFilter) {
        *lplpMessageFilter = NULL;
    }
    return S_OK;
}

/***********************************************************************
 *           CoIsOle1Class [OLE32.@]
 *
 * Determines whether the specified class an OLE v1 class.
 *
 * PARAMS
 *  clsid [I] Class to test.
 *
 * RETURNS
 *  TRUE if the class is an OLE v1 class, or FALSE otherwise.
 */
BOOL WINAPI CoIsOle1Class(REFCLSID clsid)
{
  FIXME("%s\n", debugstr_guid(clsid));
  return FALSE;
}

/***********************************************************************
 *           IsEqualGUID [OLE32.@]
 *
 * Compares two Unique Identifiers.
 *
 * PARAMS
 *  rguid1 [I] The first GUID to compare.
 *  rguid2 [I] The other GUID to compare.
 *
 * RETURNS
 *	TRUE if equal
 */
#undef IsEqualGUID
BOOL WINAPI IsEqualGUID(
     REFGUID rguid1,
     REFGUID rguid2)
{
    return !memcmp(rguid1,rguid2,sizeof(GUID));
}

/***********************************************************************
 *           CoInitializeSecurity [OLE32.@]
 */
HRESULT WINAPI CoInitializeSecurity(PSECURITY_DESCRIPTOR pSecDesc, LONG cAuthSvc,
                                    SOLE_AUTHENTICATION_SERVICE* asAuthSvc,
                                    void* pReserved1, DWORD dwAuthnLevel,
                                    DWORD dwImpLevel, void* pReserved2,
                                    DWORD dwCapabilities, void* pReserved3)
{
  FIXME("(%p,%ld,%p,%p,%ld,%ld,%p,%ld,%p) - stub!\n", pSecDesc, cAuthSvc,
        asAuthSvc, pReserved1, dwAuthnLevel, dwImpLevel, pReserved2,
        dwCapabilities, pReserved3);
  return S_OK;
}

/***********************************************************************
 *           CoSuspendClassObjects [OLE32.@]
 *
 * Suspends all registered class objects to prevent further requests coming in
 * for those objects.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoSuspendClassObjects(void)
{
    FIXME("\n");
    return S_OK;
}

/***********************************************************************
 *           CoAddRefServerProcess [OLE32.@]
 *
 * Helper function for incrementing the reference count of a local-server
 * process.
 *
 * RETURNS
 *  New reference count.
 */
ULONG WINAPI CoAddRefServerProcess(void)
{
    FIXME("\n");
    return 2;
}

/***********************************************************************
 *           CoReleaseServerProcess [OLE32.@]
 *
 * Helper function for decrementing the reference count of a local-server
 * process.
 *
 * RETURNS
 *  New reference count.
 */
ULONG WINAPI CoReleaseServerProcess(void)
{
    FIXME("\n");
    return 1;
}