Sweden-Number/dlls/urlmon/umon.c

/*
 * UrlMon
 *
 * Copyright 1999 Ulrich Czekalla for Corel Corporation
 * Copyright 2002 Huw D M Davies for CodeWeavers
 *
 * 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
 */

#define COM_NO_WINDOWS_H
#include <stdarg.h>
#include <stdio.h>

#define COBJMACROS
#define NONAMELESSUNION
#define NONAMELESSSTRUCT

#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winternl.h"
#include "winuser.h"
#include "objbase.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "ole2.h"
#include "urlmon.h"
#include "wininet.h"
#include "shlwapi.h"
#include "urlmon_main.h"

WINE_DEFAULT_DEBUG_CHANNEL(urlmon);

/* native urlmon.dll uses this key, too */
static const WCHAR BSCBHolder[] = { '_','B','S','C','B','_','H','o','l','d','e','r','_',0 };

/*static BOOL registered_wndclass = FALSE;*/

typedef struct {
    const IBindingVtbl *lpVtbl;

    LONG ref;

    LPWSTR URLName;

    HWND hwndCallback;
    IBindCtx *pBC;
    HINTERNET hinternet, hconnect, hrequest;
    HANDLE hCacheFile;
    IUMCacheStream *pstrCache;
    IBindStatusCallback *pbscb;
    DWORD total_read, expected_size;
} Binding;

static HRESULT WINAPI Binding_QueryInterface(IBinding* iface, REFIID riid, void **ppvObject)
{
    Binding *This = (Binding*)iface;

    TRACE("(%p)->(%s,%p)\n", This, debugstr_guid(riid), ppvObject);

    if((This == NULL) || (ppvObject == NULL))
	return E_INVALIDARG;

    if (IsEqualIID(&IID_IUnknown, riid) || IsEqualIID(&IID_IBinding, riid)) {
        *ppvObject = iface;
        IBinding_AddRef(iface);
        return S_OK;
    }

    *ppvObject = NULL;
    return E_NOINTERFACE;
}

static ULONG WINAPI Binding_AddRef(IBinding* iface)
{
    Binding *This = (Binding*)iface;
    ULONG ref = InterlockedIncrement(&This->ref);

    TRACE("(%p) ref=%ld\n", This, ref);

    return ref;
}

static ULONG WINAPI Binding_Release(IBinding* iface)
{
    Binding *This = (Binding*)iface;
    ULONG ref = InterlockedDecrement(&This->ref);

    TRACE("(%p) ref=%ld\n",This, ref);

    if(!ref) {
        HeapFree(GetProcessHeap(), 0, This->URLName);
        if (This->hCacheFile)
            CloseHandle(This->hCacheFile);
        if (This->pstrCache)
        {
            UMCloseCacheFileStream(This->pstrCache);
            IStream_Release((IStream *)This->pstrCache);
        }
        if (This->pbscb)
            IBindStatusCallback_Release(This->pbscb);

        HeapFree(GetProcessHeap(), 0, This);

        URLMON_UnlockModule();
    }

    return ref;
}

static HRESULT WINAPI Binding_Abort(IBinding* iface)
{
    Binding *This = (Binding*)iface;

    FIXME("(%p): stub\n", This);

    return E_NOTIMPL;
}

static HRESULT WINAPI Binding_GetBindResult(IBinding* iface, CLSID* pclsidProtocol, DWORD* pdwResult, LPOLESTR* pszResult, DWORD* pdwReserved)
{
    Binding *This = (Binding*)iface;

    FIXME("(%p)->(%p, %p, %p, %p): stub\n", This, pclsidProtocol, pdwResult, pszResult, pdwReserved);

    return E_NOTIMPL;
}

static HRESULT WINAPI Binding_GetPriority(IBinding* iface, LONG* pnPriority)
{
    Binding *This = (Binding*)iface;

    FIXME("(%p)->(%p): stub\n", This, pnPriority);

    return E_NOTIMPL;
}

static HRESULT WINAPI Binding_Resume(IBinding* iface)
{
    Binding *This = (Binding*)iface;

    FIXME("(%p): stub\n", This);

    return E_NOTIMPL;
}

static HRESULT WINAPI Binding_SetPriority(IBinding* iface, LONG nPriority)
{
    Binding *This = (Binding*)iface;

    FIXME("(%p)->(%ld): stub\n", This, nPriority);

    return E_NOTIMPL;
}

static HRESULT WINAPI Binding_Suspend(IBinding* iface)
{
    Binding *This = (Binding*)iface;

    FIXME("(%p): stub\n", This);

    return E_NOTIMPL;
}

static void Binding_CloseCacheDownload(Binding *This)
{
    CloseHandle(This->hCacheFile);
    This->hCacheFile = 0;
    UMCloseCacheFileStream(This->pstrCache);
    IStream_Release((IStream *)This->pstrCache);
    This->pstrCache = 0;
}

static HRESULT Binding_MoreCacheData(Binding *This, char *buf, DWORD dwBytes)
{
    DWORD written;

    if (WriteFile(This->hCacheFile, buf, dwBytes, &written, NULL) && written == dwBytes)
    {
	HRESULT hr;

	This->total_read += written;
        hr = IBindStatusCallback_OnProgress(This->pbscb,
					    This->total_read + written,
					    This->expected_size,
					    (This->total_read == written) ?
					        BINDSTATUS_BEGINDOWNLOADDATA :
					        BINDSTATUS_DOWNLOADINGDATA,
					    This->URLName);
	if (!hr)
	{
	    STGMEDIUM stg;
	    FORMATETC fmt;

            fmt.cfFormat = 0;
            fmt.ptd = NULL;
            fmt.dwAspect = 0;
            fmt.lindex = -1;
            fmt.tymed = TYMED_ISTREAM;

	    stg.tymed = TYMED_ISTREAM;
	    stg.u.pstm = (IStream *)This->pstrCache;
	    stg.pUnkForRelease = NULL;

            hr = IBindStatusCallback_OnDataAvailable(This->pbscb,
			    			     (This->total_read == written) ?
							 BSCF_FIRSTDATANOTIFICATION :
						         BSCF_INTERMEDIATEDATANOTIFICATION,
						     This->total_read + written,
                                                     &fmt,
						     &stg);
	}
	if (written < dwBytes)
	    return STG_E_MEDIUMFULL;
	else
	    return hr;
    }
    return HRESULT_FROM_WIN32(GetLastError());
}

static void Binding_FinishedDownload(Binding *This, HRESULT hr)
{
    STGMEDIUM stg;
    FORMATETC fmt;

    fmt.ptd = NULL;
    fmt.dwAspect = 0;
    fmt.lindex = -1;
    fmt.tymed = TYMED_ISTREAM;

    stg.tymed = TYMED_ISTREAM;
    stg.u.pstm = (IStream *)This->pstrCache;
    stg.pUnkForRelease = NULL;

    IBindStatusCallback_OnProgress(This->pbscb, This->total_read, This->expected_size,
                                   BINDSTATUS_ENDDOWNLOADDATA, This->URLName);
    IBindStatusCallback_OnDataAvailable(This->pbscb, BSCF_LASTDATANOTIFICATION, This->total_read, &fmt, &stg);
    if (hr)
    {
	WCHAR *pwchError = 0;

        FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM |
	                 FORMAT_MESSAGE_ALLOCATE_BUFFER,
                        NULL, (DWORD) hr,
		        0, (LPWSTR) &pwchError,
		        0, NULL);
	if (!pwchError)
	{
	    static WCHAR achFormat[] = { '%', '0', '8', 'x', 0 };

	    pwchError =(WCHAR *) LocalAlloc(LMEM_FIXED, sizeof(WCHAR) * 9);
	    wsprintfW(pwchError, achFormat, hr);
	}
        IBindStatusCallback_OnStopBinding(This->pbscb, hr, pwchError);
	LocalFree(pwchError);
    }
    else
    {
        IBindStatusCallback_OnStopBinding(This->pbscb, hr, NULL);
    }
    IBindStatusCallback_Release(This->pbscb);
    This->pbscb = 0;
}

static const IBindingVtbl BindingVtbl =
{
    Binding_QueryInterface,
    Binding_AddRef,
    Binding_Release,
    Binding_Abort,
    Binding_Suspend,
    Binding_Resume,
    Binding_SetPriority,
    Binding_GetPriority,
    Binding_GetBindResult
};

/* filemoniker data structure */
typedef struct {

    const IMonikerVtbl* lpvtbl;  /* VTable relative to the IMoniker interface.*/

    LONG ref; /* reference counter for this object */

    LPOLESTR URLName; /* URL string identified by this URLmoniker */
} URLMonikerImpl;

/*******************************************************************************
 *        URLMoniker_QueryInterface
 *******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_QueryInterface(IMoniker* iface,REFIID riid,void** ppvObject)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;

    TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppvObject);

    /* Perform a sanity check on the parameters.*/
    if ( (This==0) || (ppvObject==0) )
	return E_INVALIDARG;

    /* Initialize the return parameter */
    *ppvObject = 0;

    /* Compare the riid with the interface IDs implemented by this object.*/
    if (IsEqualIID(&IID_IUnknown, riid)      ||
        IsEqualIID(&IID_IPersist, riid)      ||
        IsEqualIID(&IID_IPersistStream,riid) ||
        IsEqualIID(&IID_IMoniker, riid)
       )
        *ppvObject = iface;

    /* Check that we obtained an interface.*/
    if ((*ppvObject)==0)
        return E_NOINTERFACE;

    /* Query Interface always increases the reference count by one when it is successful */
    IMoniker_AddRef(iface);

    return S_OK;
}

/******************************************************************************
 *        URLMoniker_AddRef
 ******************************************************************************/
static ULONG WINAPI URLMonikerImpl_AddRef(IMoniker* iface)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    ULONG refCount = InterlockedIncrement(&This->ref);

    TRACE("(%p)->(ref before=%lu)\n",This, refCount - 1);

    return refCount;
}

/******************************************************************************
 *        URLMoniker_Release
 ******************************************************************************/
static ULONG WINAPI URLMonikerImpl_Release(IMoniker* iface)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    ULONG refCount = InterlockedDecrement(&This->ref);

    TRACE("(%p)->(ref before=%lu)\n",This, refCount + 1);

    /* destroy the object if there's no more reference on it */
    if (!refCount) {
        HeapFree(GetProcessHeap(),0,This->URLName);
        HeapFree(GetProcessHeap(),0,This);

        URLMON_UnlockModule();
    }

    return refCount;
}


/******************************************************************************
 *        URLMoniker_GetClassID
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_GetClassID(IMoniker* iface,
						CLSID *pClassID)/* Pointer to CLSID of object */
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;

    TRACE("(%p,%p)\n",This,pClassID);

    if (pClassID==NULL)
        return E_POINTER;
    /* Windows always returns CLSID_StdURLMoniker */
    *pClassID = CLSID_StdURLMoniker;
    return S_OK;
}

/******************************************************************************
 *        URLMoniker_IsDirty
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_IsDirty(IMoniker* iface)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    /* Note that the OLE-provided implementations of the IPersistStream::IsDirty
       method in the OLE-provided moniker interfaces always return S_FALSE because
       their internal state never changes. */

    TRACE("(%p)\n",This);

    return S_FALSE;
}

/******************************************************************************
 *        URLMoniker_Load
 *
 * NOTE
 *  Writes a ULONG containing length of unicode string, followed
 *  by that many unicode characters
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_Load(IMoniker* iface,IStream* pStm)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    
    HRESULT res;
    ULONG len;
    ULONG got;
    TRACE("(%p,%p)\n",This,pStm);

    if(!pStm)
        return E_INVALIDARG;

    res = IStream_Read(pStm, &len, sizeof(ULONG), &got);
    if(SUCCEEDED(res)) {
        if(got == sizeof(ULONG)) {
            HeapFree(GetProcessHeap(), 0, This->URLName);
            This->URLName=HeapAlloc(GetProcessHeap(),0,sizeof(WCHAR)*(len+1));
            if(!This->URLName)
                res = E_OUTOFMEMORY;
            else {
                res = IStream_Read(pStm, This->URLName, len, NULL);
                This->URLName[len] = 0;
            }
        }
        else
            res = E_FAIL;
    }
    return res;
}

/******************************************************************************
 *        URLMoniker_Save
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_Save(IMoniker* iface,
					  IStream* pStm,/* pointer to the stream where the object is to be saved */
					  BOOL fClearDirty)/* Specifies whether to clear the dirty flag */
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;

    HRESULT res;
    ULONG len;
    TRACE("(%p,%p,%d)\n",This,pStm,fClearDirty);

    if(!pStm)
        return E_INVALIDARG;

    len = strlenW(This->URLName);
    res=IStream_Write(pStm,&len,sizeof(ULONG),NULL);
    if(SUCCEEDED(res))
        res=IStream_Write(pStm,&This->URLName,len*sizeof(WCHAR),NULL);
    return res;

}

/******************************************************************************
 *        URLMoniker_GetSizeMax
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_GetSizeMax(IMoniker* iface,
						ULARGE_INTEGER* pcbSize)/* Pointer to size of stream needed to save object */
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;

    TRACE("(%p,%p)\n",This,pcbSize);

    if(!pcbSize)
        return E_INVALIDARG;

    pcbSize->u.LowPart = sizeof(ULONG) + (strlenW(This->URLName) * sizeof(WCHAR));
    pcbSize->u.HighPart = 0;
    return S_OK;
}

/******************************************************************************
 *                  URLMoniker_BindToObject
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_BindToObject(IMoniker* iface,
						  IBindCtx* pbc,
						  IMoniker* pmkToLeft,
						  REFIID riid,
						  VOID** ppvResult)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;

    *ppvResult=0;

    FIXME("(%p)->(%p,%p,%s,%p): stub\n",This,pbc,pmkToLeft,debugstr_guid(riid),
	  ppvResult);

    return E_NOTIMPL;
}

typedef struct {
    enum {OnProgress, OnDataAvailable} callback;
} URLMON_CallbackData;


#if 0
static LRESULT CALLBACK URLMON_WndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
    return DefWindowProcA(hwnd, msg, wparam, lparam);
}

static void PostOnProgress(URLMonikerImpl *This, UINT progress, UINT maxprogress, DWORD status, LPCWSTR *str)
{
}

static void CALLBACK URLMON_InternetCallback(HINTERNET hinet, /*DWORD_PTR*/ DWORD context, DWORD status,
					     void *status_info, DWORD status_info_len)
{
    URLMonikerImpl *This = (URLMonikerImpl *)context;
    TRACE("handle %p this %p status %08lx\n", hinet, This, status);

    if(This->filesize == -1) {
	switch(status) {
	case INTERNET_STATUS_RESOLVING_NAME:
	    PostOnProgess(This, 0, 0, BINDSTATUS_FINDINGRESOURCE, status_info);
	    break;
	case INTERNET_STATUS_CONNECTING_TO_SERVER:
	    PostOnProgress(This, 0, 0, BINDSTATUS_CONNECTING, NULL);
	    break;
	case INTERNET_STATUS_SENDING_REQUEST:
	    PostOnProgress(This, 0, 0, BINDSTATUS_SENDINGREQUEST, NULL);
	    break;
	case INTERNET_REQUEST_COMPLETE:
	  {
	      DWORD len, lensz = sizeof(len);

	    HttpQueryInfoW(hrequest, HTTP_QUERY_CONTENT_LENGTH | HTTP_QUERY_FLAG_NUMBER, &len, &lensz, NULL);
	    TRACE("res = %ld gle = %08lx url len = %ld\n", hres, GetLastError(), len);
	    This->filesize = len;
	    break;
	  }
	}
    }

    return;
}
#endif


/******************************************************************************
 *        URLMoniker_BindToStorage
 ******************************************************************************/
static HRESULT URLMonikerImpl_BindToStorage_hack(LPCWSTR URLName,
						   IBindCtx* pbc,
						   IMoniker* pmkToLeft,
						   REFIID riid,
						   VOID** ppvObject)
{
    HRESULT hres;
    BINDINFO bi;
    DWORD bindf;
    WCHAR szFileName[MAX_PATH + 1];
    Binding *bind;
    int len;

    WARN("(%s %p %p %s %p)\n", debugstr_w(URLName), pbc, pmkToLeft, debugstr_guid(riid),
            ppvObject);

    if(pmkToLeft) {
	FIXME("pmkToLeft != NULL\n");
	return E_NOTIMPL;
    }
    if(!IsEqualIID(&IID_IStream, riid)) {
	FIXME("unsupported iid\n");
	return E_NOTIMPL;
    }

    bind = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(Binding));
    bind->lpVtbl = &BindingVtbl;
    bind->ref = 1;
    URLMON_LockModule();

    len = lstrlenW(URLName)+1;
    bind->URLName = HeapAlloc(GetProcessHeap(), 0, len*sizeof(WCHAR));
    memcpy(bind->URLName, URLName, len*sizeof(WCHAR));

    hres = UMCreateStreamOnCacheFile(bind->URLName, 0, szFileName, &bind->hCacheFile, &bind->pstrCache);

    if(SUCCEEDED(hres)) {
        TRACE("Created stream...\n");

        *ppvObject = (void *) bind->pstrCache;
        IStream_AddRef((IStream *) bind->pstrCache);

        hres = IBindCtx_GetObjectParam(pbc, (LPOLESTR)BSCBHolder, (IUnknown**)&bind->pbscb);
        if(SUCCEEDED(hres)) {
            TRACE("Got IBindStatusCallback...\n");

            memset(&bi, 0, sizeof(bi));
            bi.cbSize = sizeof(bi);
            bindf = 0;
            hres = IBindStatusCallback_GetBindInfo(bind->pbscb, &bindf, &bi);
            if(SUCCEEDED(hres)) {
                WCHAR *urlcopy, *tmpwc;
                URL_COMPONENTSW url;
                WCHAR *host, *path, *partial_path, *user, *pass;
                DWORD lensz = sizeof(bind->expected_size);
                DWORD dwService = 0;
                BOOL bSuccess;

                TRACE("got bindinfo. bindf = %08lx extrainfo = %s bindinfof = %08lx bindverb = %08lx iid %s\n",
                      bindf, debugstr_w(bi.szExtraInfo), bi.grfBindInfoF, bi.dwBindVerb, debugstr_guid(&bi.iid));
                hres = IBindStatusCallback_OnStartBinding(bind->pbscb, 0, (IBinding*)bind);
                TRACE("OnStartBinding rets %08lx\n", hres);

                /* This class will accept URLs with the backslash in them. But InternetCrackURL will not - it
                 * requires forward slashes (this is the behaviour of Microsoft's INETAPI). So we need to make
                 * a copy of the URL here and change the backslash to a forward slash everywhere it appears -
                 * but only before any '#' or '?', after which backslash should be left alone.
                 */
                urlcopy = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * (lstrlenW(bind->URLName) + 1));
                lstrcpyW(urlcopy, bind->URLName);
                for (tmpwc = urlcopy; *tmpwc && *tmpwc != '#' && *tmpwc != '?'; ++tmpwc)
                    if (*tmpwc == '\\')
                            *tmpwc = '/';

#if 0
                if(!registered_wndclass) {
                    WNDCLASSA urlmon_wndclass = {0, URLMON_WndProc,0, 0, URLMON_hInstance, 0, 0, 0, NULL, "URLMON_Callback_Window_Class"};
                    RegisterClassA(&urlmon_wndclass);
                    registered_wndclass = TRUE;
                }

                This->hwndCallback = CreateWindowA("URLMON_Callback_Window_Class", NULL, 0, 0, 0, 0, 0, 0, 0,
                                                   URLMON_hInstance, NULL);

#endif
                bind->expected_size = 0;
                bind->total_read = 0;

                memset(&url, 0, sizeof(url));
                url.dwStructSize = sizeof(url);
                url.dwSchemeLength = url.dwHostNameLength = url.dwUrlPathLength = url.dwUserNameLength = url.dwPasswordLength = 1;
                InternetCrackUrlW(urlcopy, 0, ICU_ESCAPE, &url);
                host = HeapAlloc(GetProcessHeap(), 0, (url.dwHostNameLength + 1) * sizeof(WCHAR));
                memcpy(host, url.lpszHostName, url.dwHostNameLength * sizeof(WCHAR));
                host[url.dwHostNameLength] = '\0';
                path = HeapAlloc(GetProcessHeap(), 0, (url.dwUrlPathLength + 1) * sizeof(WCHAR));
                memcpy(path, url.lpszUrlPath, url.dwUrlPathLength * sizeof(WCHAR));
                path[url.dwUrlPathLength] = '\0';
                if (url.dwUserNameLength)
                {
                    user = HeapAlloc(GetProcessHeap(), 0, ((url.dwUserNameLength + 1) * sizeof(WCHAR)));
                    memcpy(user, url.lpszUserName, url.dwUserNameLength * sizeof(WCHAR));
                    user[url.dwUserNameLength] = 0;
                }
                else
                {
                    user = 0;
                }
                if (url.dwPasswordLength)
                {
                    pass = HeapAlloc(GetProcessHeap(), 0, ((url.dwPasswordLength + 1) * sizeof(WCHAR)));
                    memcpy(pass, url.lpszPassword, url.dwPasswordLength * sizeof(WCHAR));
                    pass[url.dwPasswordLength] = 0;
                }
                else
                {
                    pass = 0;
                }

                switch ((DWORD) url.nScheme)
                {
                case INTERNET_SCHEME_FTP:
                case INTERNET_SCHEME_GOPHER:
                case INTERNET_SCHEME_HTTP:
                case INTERNET_SCHEME_HTTPS:

                    bind->hinternet = InternetOpenA("User Agent", 0, NULL, NULL, 0 /*INTERNET_FLAG_ASYNC*/);
/*                  InternetSetStatusCallback(bind->hinternet, URLMON_InternetCallback);*/
                    if (!bind->hinternet)
                    {
                            hres = HRESULT_FROM_WIN32(GetLastError());
                            break;
                    }

                    switch ((DWORD) url.nScheme)
                    {
                    case INTERNET_SCHEME_FTP:
                        if (!url.nPort)
                            url.nPort = INTERNET_DEFAULT_FTP_PORT;
                        dwService = INTERNET_SERVICE_FTP;
                        break;
    
                    case INTERNET_SCHEME_GOPHER:
                        if (!url.nPort)
                            url.nPort = INTERNET_DEFAULT_GOPHER_PORT;
                        dwService = INTERNET_SERVICE_GOPHER;
                        break;

                    case INTERNET_SCHEME_HTTP:
                        if (!url.nPort)
                            url.nPort = INTERNET_DEFAULT_HTTP_PORT;
                        dwService = INTERNET_SERVICE_HTTP;
                        break;

                    case INTERNET_SCHEME_HTTPS:
                        if (!url.nPort)
                            url.nPort = INTERNET_DEFAULT_HTTPS_PORT;
                        dwService = INTERNET_SERVICE_HTTP;
                        break;
                    }

                    bind->hconnect = InternetConnectW(bind->hinternet, host, url.nPort, user, pass,
                                                      dwService, 0, (DWORD)bind);
                    if (!bind->hconnect)
                    {
                            hres = HRESULT_FROM_WIN32(GetLastError());
                            CloseHandle(bind->hinternet);
                            break;
                    }

                    hres = IBindStatusCallback_OnProgress(bind->pbscb, 0, 0, 0x22, NULL);
                    hres = IBindStatusCallback_OnProgress(bind->pbscb, 0, 0, BINDSTATUS_FINDINGRESOURCE, NULL);
                    hres = IBindStatusCallback_OnProgress(bind->pbscb, 0, 0, BINDSTATUS_CONNECTING, NULL);
                    hres = IBindStatusCallback_OnProgress(bind->pbscb, 0, 0, BINDSTATUS_SENDINGREQUEST, NULL);

                    bSuccess = FALSE;

                    switch (dwService)
                    {
                    case INTERNET_SERVICE_GOPHER:
                        bind->hrequest = GopherOpenFileW(bind->hconnect,
                                                         path,
                                                         0,
                                                         INTERNET_FLAG_RELOAD,
                                                         0);
                        if (bind->hrequest)
                                bSuccess = TRUE;
                        else
                                hres = HRESULT_FROM_WIN32(GetLastError());
                        break;

                    case INTERNET_SERVICE_FTP:
                        bind->hrequest = FtpOpenFileW(bind->hconnect,
                                                      path,
                                                      GENERIC_READ,
                                                      FTP_TRANSFER_TYPE_BINARY |
                                                       INTERNET_FLAG_TRANSFER_BINARY |
                                                       INTERNET_FLAG_RELOAD,
                                                      0);
                        if (bind->hrequest)
                                bSuccess = TRUE;
                        else
                                hres = HRESULT_FROM_WIN32(GetLastError());
                        break;

                    case INTERNET_SERVICE_HTTP:
                        bind->hrequest = HttpOpenRequestW(bind->hconnect, NULL, path, NULL, NULL, NULL, 0, (DWORD)bind);
                        if (!bind->hrequest)
                        {
                                hres = HRESULT_FROM_WIN32(GetLastError());
                        }
                        else if (!HttpSendRequestW(bind->hrequest, NULL, 0, NULL, 0))
                        {
                                hres = HRESULT_FROM_WIN32(GetLastError());
                                InternetCloseHandle(bind->hrequest);
                        }
                        else
                        {
                                HttpQueryInfoW(bind->hrequest,
                                               HTTP_QUERY_CONTENT_LENGTH | HTTP_QUERY_FLAG_NUMBER,
                                               &bind->expected_size,
                                               &lensz,
                                               NULL);
                                bSuccess = TRUE;
                        }
                        break;
                    }
                    if(bSuccess)
                    {
                        TRACE("res = %ld gle = %08lx url len = %ld\n", hres, GetLastError(), bind->expected_size);

                        IBindStatusCallback_OnProgress(bind->pbscb, 0, 0, BINDSTATUS_CACHEFILENAMEAVAILABLE, szFileName);

                        while(1) {
                            char buf[4096];
                            DWORD bufread;
                            if(InternetReadFile(bind->hrequest, buf, sizeof(buf), &bufread)) {
                                TRACE("read %ld bytes %s...\n", bufread, debugstr_an(buf, 10));
                                if(bufread == 0) break;
                                hres = Binding_MoreCacheData(bind, buf, bufread);
                            } else
                                break;
                        }
                        InternetCloseHandle(bind->hrequest);
                            hres = S_OK;
                    }
            
                    InternetCloseHandle(bind->hconnect);
                    InternetCloseHandle(bind->hinternet);
                    break;

                case INTERNET_SCHEME_FILE:
                    partial_path = bind->URLName + 5; /* Skip the "file:" part */
                    if ((partial_path[0] != '/' && partial_path[0] != '\\') ||
                        (partial_path[1] != '/' && partial_path[1] != '\\'))
                    {
                        hres = E_FAIL;
                    }
                    else
                    {
                        HANDLE h;

                        partial_path += 2;
                        if (partial_path[0] == '/' || partial_path[0] == '\\')
                            ++partial_path;
                        h = CreateFileW(partial_path, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 );
                        if (h == (HANDLE) HFILE_ERROR)
                        {
                            hres = HRESULT_FROM_WIN32(GetLastError());
                        }
                        else
                        {
                            char buf[4096];
                            DWORD bufread;

                            IBindStatusCallback_OnProgress(bind->pbscb, 0, 0, BINDSTATUS_CACHEFILENAMEAVAILABLE, szFileName);

                            while (ReadFile(h, buf, sizeof(buf), &bufread, NULL) && bufread > 0)
                                hres = Binding_MoreCacheData(bind, buf, bufread);

                            CloseHandle(h);
                            hres = S_OK;
                        }
                    }
                        
                    break;

                default:
                    FIXME("Unsupported URI scheme");
                    break;
                }
                Binding_CloseCacheDownload(bind);
                Binding_FinishedDownload(bind, hres);

                if (user)
                    HeapFree(GetProcessHeap(), 0, user);
                if (pass)
                    HeapFree(GetProcessHeap(), 0, pass);
                HeapFree(GetProcessHeap(), 0, path);
                HeapFree(GetProcessHeap(), 0, host);
                HeapFree(GetProcessHeap(), 0, urlcopy);
            }
        }
    }

    IBinding_Release((IBinding*)bind);

    return hres;
}

static HRESULT WINAPI URLMonikerImpl_BindToStorage(IMoniker* iface,
                                                   IBindCtx* pbc,
						   IMoniker* pmkToLeft,
						   REFIID riid,
						   VOID** ppvObject)
{
    URLMonikerImpl *This = (URLMonikerImpl*)iface;
    WCHAR schema[64];
    BOOL bret;

    URL_COMPONENTSW url = {sizeof(URL_COMPONENTSW), schema,
        sizeof(schema)/sizeof(WCHAR), 0, NULL, 0, 0, NULL, 0, NULL, 0, NULL, 0, NULL, 0};

    bret = InternetCrackUrlW(This->URLName, 0, ICU_ESCAPE, &url);
    if(!bret) {
        ERR("InternetCrackUrl failed: %ld\n", GetLastError());
        return E_FAIL;
    }

    if(url.nScheme == INTERNET_SCHEME_HTTP
       || url.nScheme== INTERNET_SCHEME_HTTPS
       || url.nScheme== INTERNET_SCHEME_FTP
       || url.nScheme == INTERNET_SCHEME_GOPHER
       || url.nScheme == INTERNET_SCHEME_FILE)
        return URLMonikerImpl_BindToStorage_hack(This->URLName, pbc, pmkToLeft, riid, ppvObject);

    TRACE("(%p)->(%p %p %s %p)\n", This, pbc, pmkToLeft, debugstr_guid(riid), ppvObject);

    return start_binding(This->URLName, pbc, riid, ppvObject);
}

/******************************************************************************
 *        URLMoniker_Reduce
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_Reduce(IMoniker* iface,
					    IBindCtx* pbc,
					    DWORD dwReduceHowFar,
					    IMoniker** ppmkToLeft,
					    IMoniker** ppmkReduced)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    
    TRACE("(%p,%p,%ld,%p,%p)\n",This,pbc,dwReduceHowFar,ppmkToLeft,ppmkReduced);

    if(!ppmkReduced)
        return E_INVALIDARG;

    URLMonikerImpl_AddRef(iface);
    *ppmkReduced = iface;
    return MK_S_REDUCED_TO_SELF;
}

/******************************************************************************
 *        URLMoniker_ComposeWith
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_ComposeWith(IMoniker* iface,
						 IMoniker* pmkRight,
						 BOOL fOnlyIfNotGeneric,
						 IMoniker** ppmkComposite)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    FIXME("(%p)->(%p,%d,%p): stub\n",This,pmkRight,fOnlyIfNotGeneric,ppmkComposite);

    return E_NOTIMPL;
}

/******************************************************************************
 *        URLMoniker_Enum
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_Enum(IMoniker* iface,BOOL fForward, IEnumMoniker** ppenumMoniker)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    TRACE("(%p,%d,%p)\n",This,fForward,ppenumMoniker);

    if(!ppenumMoniker)
        return E_INVALIDARG;

    /* Does not support sub-monikers */
    *ppenumMoniker = NULL;
    return S_OK;
}

/******************************************************************************
 *        URLMoniker_IsEqual
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_IsEqual(IMoniker* iface,IMoniker* pmkOtherMoniker)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    CLSID clsid;
    LPOLESTR urlPath;
    IBindCtx* bind;
    HRESULT res;

    TRACE("(%p,%p)\n",This,pmkOtherMoniker);

    if(pmkOtherMoniker==NULL)
        return E_INVALIDARG;

    IMoniker_GetClassID(pmkOtherMoniker,&clsid);

    if(!IsEqualCLSID(&clsid,&CLSID_StdURLMoniker))
        return S_FALSE;

    res = CreateBindCtx(0,&bind);
    if(FAILED(res))
        return res;

    res = S_FALSE;
    if(SUCCEEDED(IMoniker_GetDisplayName(pmkOtherMoniker,bind,NULL,&urlPath))) {
        int result = lstrcmpiW(urlPath, This->URLName);
        CoTaskMemFree(urlPath);
        if(result == 0)
            res = S_OK;
    }
    IUnknown_Release(bind);
    return res;
}


/******************************************************************************
 *        URLMoniker_Hash
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_Hash(IMoniker* iface,DWORD* pdwHash)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    
    int  h = 0,i,skip,len;
    int  off = 0;
    LPOLESTR val;

    TRACE("(%p,%p)\n",This,pdwHash);

    if(!pdwHash)
        return E_INVALIDARG;

    val = This->URLName;
    len = lstrlenW(val);

    if(len < 16) {
        for(i = len ; i > 0; i--) {
            h = (h * 37) + val[off++];
        }
    }
    else {
        /* only sample some characters */
        skip = len / 8;
        for(i = len; i > 0; i -= skip, off += skip) {
            h = (h * 39) + val[off];
        }
    }
    *pdwHash = h;
    return S_OK;
}

/******************************************************************************
 *        URLMoniker_IsRunning
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_IsRunning(IMoniker* iface,
					       IBindCtx* pbc,
					       IMoniker* pmkToLeft,
					       IMoniker* pmkNewlyRunning)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    FIXME("(%p)->(%p,%p,%p): stub\n",This,pbc,pmkToLeft,pmkNewlyRunning);

    return E_NOTIMPL;
}

/******************************************************************************
 *        URLMoniker_GetTimeOfLastChange
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_GetTimeOfLastChange(IMoniker* iface,
							 IBindCtx* pbc,
							 IMoniker* pmkToLeft,
							 FILETIME* pFileTime)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    FIXME("(%p)->(%p,%p,%p): stub\n",This,pbc,pmkToLeft,pFileTime);

    return E_NOTIMPL;
}

/******************************************************************************
 *        URLMoniker_Inverse
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_Inverse(IMoniker* iface,IMoniker** ppmk)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    TRACE("(%p,%p)\n",This,ppmk);

    return MK_E_NOINVERSE;
}

/******************************************************************************
 *        URLMoniker_CommonPrefixWith
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_CommonPrefixWith(IMoniker* iface,IMoniker* pmkOther,IMoniker** ppmkPrefix)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    FIXME("(%p)->(%p,%p): stub\n",This,pmkOther,ppmkPrefix);

    return E_NOTIMPL;
}

/******************************************************************************
 *        URLMoniker_RelativePathTo
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_RelativePathTo(IMoniker* iface,IMoniker* pmOther, IMoniker** ppmkRelPath)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    FIXME("(%p)->(%p,%p): stub\n",This,pmOther,ppmkRelPath);

    return E_NOTIMPL;
}

/******************************************************************************
 *        URLMoniker_GetDisplayName
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_GetDisplayName(IMoniker* iface,
						    IBindCtx* pbc,
						    IMoniker* pmkToLeft,
						    LPOLESTR *ppszDisplayName)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    
    int len;
    
    TRACE("(%p,%p,%p,%p)\n",This,pbc,pmkToLeft,ppszDisplayName);
    
    if(!ppszDisplayName)
        return E_INVALIDARG;
    
    /* FIXME: If this is a partial URL, try and get a URL moniker from SZ_URLCONTEXT in the bind context,
        then look at pmkToLeft to try and complete the URL
    */
    len = lstrlenW(This->URLName)+1;
    *ppszDisplayName = CoTaskMemAlloc(len*sizeof(WCHAR));
    if(!*ppszDisplayName)
        return E_OUTOFMEMORY;
    lstrcpyW(*ppszDisplayName, This->URLName);
    return S_OK;
}

/******************************************************************************
 *        URLMoniker_ParseDisplayName
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_ParseDisplayName(IMoniker* iface,
						      IBindCtx* pbc,
						      IMoniker* pmkToLeft,
						      LPOLESTR pszDisplayName,
						      ULONG* pchEaten,
						      IMoniker** ppmkOut)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    FIXME("(%p)->(%p,%p,%p,%p,%p): stub\n",This,pbc,pmkToLeft,pszDisplayName,pchEaten,ppmkOut);

    return E_NOTIMPL;
}

/******************************************************************************
 *        URLMoniker_IsSystemMoniker
 ******************************************************************************/
static HRESULT WINAPI URLMonikerImpl_IsSystemMoniker(IMoniker* iface,DWORD* pwdMksys)
{
    URLMonikerImpl *This = (URLMonikerImpl *)iface;
    TRACE("(%p,%p)\n",This,pwdMksys);

    if(!pwdMksys)
        return E_INVALIDARG;

    *pwdMksys = MKSYS_URLMONIKER;
    return S_OK;
}

/********************************************************************************/
/* Virtual function table for the URLMonikerImpl class which  include IPersist,*/
/* IPersistStream and IMoniker functions.                                       */
static const IMonikerVtbl VT_URLMonikerImpl =
{
    URLMonikerImpl_QueryInterface,
    URLMonikerImpl_AddRef,
    URLMonikerImpl_Release,
    URLMonikerImpl_GetClassID,
    URLMonikerImpl_IsDirty,
    URLMonikerImpl_Load,
    URLMonikerImpl_Save,
    URLMonikerImpl_GetSizeMax,
    URLMonikerImpl_BindToObject,
    URLMonikerImpl_BindToStorage,
    URLMonikerImpl_Reduce,
    URLMonikerImpl_ComposeWith,
    URLMonikerImpl_Enum,
    URLMonikerImpl_IsEqual,
    URLMonikerImpl_Hash,
    URLMonikerImpl_IsRunning,
    URLMonikerImpl_GetTimeOfLastChange,
    URLMonikerImpl_Inverse,
    URLMonikerImpl_CommonPrefixWith,
    URLMonikerImpl_RelativePathTo,
    URLMonikerImpl_GetDisplayName,
    URLMonikerImpl_ParseDisplayName,
    URLMonikerImpl_IsSystemMoniker
};

/******************************************************************************
 *         URLMoniker_Construct (local function)
 *******************************************************************************/
static HRESULT URLMonikerImpl_Construct(URLMonikerImpl* This, LPCOLESTR lpszLeftURLName, LPCOLESTR lpszURLName)
{
    HRESULT hres;
    DWORD sizeStr = INTERNET_MAX_URL_LENGTH;

    TRACE("(%p,%s,%s)\n",This,debugstr_w(lpszLeftURLName),debugstr_w(lpszURLName));
    memset(This, 0, sizeof(*This));

    /* Initialize the virtual function table. */
    This->lpvtbl = &VT_URLMonikerImpl;
    This->ref = 0;

    if(lpszLeftURLName) {
        hres = UrlCombineW(lpszLeftURLName, lpszURLName, NULL, &sizeStr, 0);
        if(FAILED(hres)) {
            return hres;
        }
        sizeStr++;
    }
    else
        sizeStr = lstrlenW(lpszURLName)+1;

    This->URLName=HeapAlloc(GetProcessHeap(),0,sizeof(WCHAR)*(sizeStr));

    if (This->URLName==NULL)
        return E_OUTOFMEMORY;

    if(lpszLeftURLName) {
        hres = UrlCombineW(lpszLeftURLName, lpszURLName, This->URLName, &sizeStr, 0);
        if(FAILED(hres)) {
            HeapFree(GetProcessHeap(), 0, This->URLName);
            return hres;
        }
    }
    else
        strcpyW(This->URLName,lpszURLName);

    URLMON_LockModule();

    return S_OK;
}

/***********************************************************************
 *           CreateAsyncBindCtx (URLMON.@)
 */
HRESULT WINAPI CreateAsyncBindCtx(DWORD reserved, IBindStatusCallback *callback,
    IEnumFORMATETC *format, IBindCtx **pbind)
{
    TRACE("(%08lx %p %p %p)\n", reserved, callback, format, pbind);

    if(!callback)
        return E_INVALIDARG;

    return CreateAsyncBindCtxEx(NULL, 0, callback, format, pbind, 0);
}
/***********************************************************************
 *           CreateAsyncBindCtxEx (URLMON.@)
 *
 * Create an asynchronous bind context.
 */ 
HRESULT WINAPI CreateAsyncBindCtxEx(IBindCtx *ibind, DWORD options,
    IBindStatusCallback *callback, IEnumFORMATETC *format, IBindCtx** pbind,
    DWORD reserved)
{
    HRESULT hres;
    BIND_OPTS bindopts;
    IBindCtx *bctx;

    TRACE("(%p %08lx %p %p %p %ld)\n", ibind, options, callback, format, pbind, reserved);

    if(!pbind)
        return E_INVALIDARG;

    if(options)
        FIXME("not supported options %08lx", options);
    if(format)
        FIXME("format is not supported\n");

    if(reserved)
        WARN("reserved=%ld\n", reserved);

    hres = CreateBindCtx(0, &bctx);
    if(FAILED(hres))
        return hres;

    bindopts.cbStruct = sizeof(BIND_OPTS);
    bindopts.grfFlags = BIND_MAYBOTHERUSER;
    bindopts.grfMode = STGM_READWRITE | STGM_SHARE_EXCLUSIVE;
    bindopts.dwTickCountDeadline = 0;
    IBindCtx_SetBindOptions(bctx, &bindopts);

    if(callback)
        RegisterBindStatusCallback(bctx, callback, NULL, 0);

    *pbind = bctx;

    return S_OK;
}


/***********************************************************************
 *           CreateURLMoniker (URLMON.@)
 *
 * Create a url moniker.
 *
 * PARAMS
 *    pmkContext [I] Context
 *    szURL      [I] Url to create the moniker for
 *    ppmk       [O] Destination for created moniker.
 *
 * RETURNS
 *    Success: S_OK. ppmk contains the created IMoniker object.
 *    Failure: MK_E_SYNTAX if szURL is not a valid url, or
 *             E_OUTOFMEMORY if memory allocation fails.
 */
HRESULT WINAPI CreateURLMoniker(IMoniker *pmkContext, LPCWSTR szURL, IMoniker **ppmk)
{
    URLMonikerImpl *obj;
    HRESULT hres;
    IID iid = IID_IMoniker;
    LPOLESTR lefturl = NULL;

    TRACE("(%p, %s, %p)\n", pmkContext, debugstr_w(szURL), ppmk);

    if(!(obj = HeapAlloc(GetProcessHeap(), 0, sizeof(*obj))))
	return E_OUTOFMEMORY;

    if(pmkContext) {
        IBindCtx* bind;
        DWORD dwMksys = 0;
        IMoniker_IsSystemMoniker(pmkContext, &dwMksys);
        if(dwMksys == MKSYS_URLMONIKER && SUCCEEDED(CreateBindCtx(0, &bind))) {
            IMoniker_GetDisplayName(pmkContext, bind, NULL, &lefturl);
            TRACE("lefturl = %s\n", debugstr_w(lefturl));
            IBindCtx_Release(bind);
        }
    }
        
    hres = URLMonikerImpl_Construct(obj, lefturl, szURL);
    CoTaskMemFree(lefturl);
    if(SUCCEEDED(hres))
	hres = URLMonikerImpl_QueryInterface((IMoniker*)obj, &iid, (void**)ppmk);
    else
	HeapFree(GetProcessHeap(), 0, obj);
    return hres;
}

/***********************************************************************
 *           CoInternetQueryInfo (URLMON.@)
 *
 * Retrieves information relevant to a specified URL
 *
 * RETURNS
 *    S_OK 			success
 *    S_FALSE			buffer too small
 *    INET_E_QUERYOPTIONUNKNOWN	invalid option
 *
 */
HRESULT WINAPI CoInternetQueryInfo(LPCWSTR pwzUrl, QUERYOPTION QueryOption,
  DWORD dwQueryFlags, LPVOID pvBuffer, DWORD cbBuffer, DWORD * pcbBuffer,
  DWORD dwReserved)
{
  FIXME("(%s, %x, %lx, %p, %lx, %p, %lx): stub\n", debugstr_w(pwzUrl),
    QueryOption, dwQueryFlags, pvBuffer, cbBuffer, pcbBuffer, dwReserved);
  return S_OK;
}

/***********************************************************************
 *           IsAsyncMoniker (URLMON.@)
 */
HRESULT WINAPI IsAsyncMoniker(IMoniker *pmk)
{
    IUnknown *am;
    
    TRACE("(%p)\n", pmk);
    if(!pmk)
        return E_INVALIDARG;
    if(SUCCEEDED(IMoniker_QueryInterface(pmk, &IID_IAsyncMoniker, (void**)&am))) {
        IUnknown_Release(am);
        return S_OK;
    }
    return S_FALSE;
}

/***********************************************************************
 *           RegisterBindStatusCallback (URLMON.@)
 *
 * Register a bind status callback.
 *
 * PARAMS
 *  pbc           [I] Binding context
 *  pbsc          [I] Callback to register
 *  ppbscPrevious [O] Destination for previous callback
 *  dwReserved    [I] Reserved, must be 0.
 *
 * RETURNS
 *    Success: S_OK.
 *    Failure: E_INVALIDARG, if any argument is invalid, or
 *             E_OUTOFMEMORY if memory allocation fails.
 */
HRESULT WINAPI RegisterBindStatusCallback(
    IBindCtx *pbc,
    IBindStatusCallback *pbsc,
    IBindStatusCallback **ppbscPrevious,
    DWORD dwReserved)
{
    IBindStatusCallback *prev;

    TRACE("(%p,%p,%p,%lu)\n", pbc, pbsc, ppbscPrevious, dwReserved);

    if (pbc == NULL || pbsc == NULL)
        return E_INVALIDARG;

    if (SUCCEEDED(IBindCtx_GetObjectParam(pbc, (LPOLESTR)BSCBHolder, (IUnknown **)&prev)))
    {
        IBindCtx_RevokeObjectParam(pbc, (LPOLESTR)BSCBHolder);
        if (ppbscPrevious)
            *ppbscPrevious = prev;
        else
            IBindStatusCallback_Release(prev);
    }

    return IBindCtx_RegisterObjectParam(pbc, (LPOLESTR)BSCBHolder, (IUnknown *)pbsc);
}

/***********************************************************************
 *           RevokeBindStatusCallback (URLMON.@)
 *
 * Unregister a bind status callback.
 *
 *  pbc           [I] Binding context
 *  pbsc          [I] Callback to unregister
 *
 * RETURNS
 *    Success: S_OK.
 *    Failure: E_INVALIDARG, if any argument is invalid, or
 *             E_FAIL if pbsc wasn't registered with pbc.
 */
HRESULT WINAPI RevokeBindStatusCallback(
    IBindCtx *pbc,
    IBindStatusCallback *pbsc)
{
    IBindStatusCallback *callback;
    HRESULT hr = E_FAIL;

	TRACE("(%p,%p)\n", pbc, pbsc);

    if (pbc == NULL || pbsc == NULL)
        return E_INVALIDARG;

    if (SUCCEEDED(IBindCtx_GetObjectParam(pbc, (LPOLESTR)BSCBHolder, (IUnknown **)&callback)))
    {
        if (callback == pbsc)
        {
            IBindCtx_RevokeObjectParam(pbc, (LPOLESTR)BSCBHolder);
            hr = S_OK;
        }
        IBindStatusCallback_Release(pbsc);
    }

    return hr;
}

/***********************************************************************
 *           URLDownloadToFileA (URLMON.@)
 *
 * Downloads URL szURL to rile szFileName and call lpfnCB callback to
 * report progress.
 *
 * PARAMS
 *  pCaller    [I] controlling IUnknown interface.
 *  szURL      [I] URL of the file to download
 *  szFileName [I] file name to store the content of the URL
 *  dwReserved [I] reserved - set to 0
 *  lpfnCB     [I] callback for progress report
 *
 * RETURNS
 *  S_OK on success
 *  E_OUTOFMEMORY when going out of memory
 */
HRESULT WINAPI URLDownloadToFileA(LPUNKNOWN pCaller,
				  LPCSTR szURL,
				  LPCSTR szFileName,
				  DWORD dwReserved,
				  LPBINDSTATUSCALLBACK lpfnCB)
{
    UNICODE_STRING szURL_w, szFileName_w;

    if ((szURL == NULL) || (szFileName == NULL)) {
	FIXME("(%p,%s,%s,%08lx,%p) cannot accept NULL strings !\n", pCaller, debugstr_a(szURL), debugstr_a(szFileName), dwReserved, lpfnCB);
	return E_INVALIDARG; /* The error code is not specified in this case... */
    }
    
    if (RtlCreateUnicodeStringFromAsciiz(&szURL_w, szURL)) {
	if (RtlCreateUnicodeStringFromAsciiz(&szFileName_w, szFileName)) {
	    HRESULT ret = URLDownloadToFileW(pCaller, szURL_w.Buffer, szFileName_w.Buffer, dwReserved, lpfnCB);

	    RtlFreeUnicodeString(&szURL_w);
	    RtlFreeUnicodeString(&szFileName_w);
	    
	    return ret;
	} else {
	    RtlFreeUnicodeString(&szURL_w);
	}
    }
    
    FIXME("(%p,%s,%s,%08lx,%p) could not allocate W strings !\n", pCaller, szURL, szFileName, dwReserved, lpfnCB);
    return E_OUTOFMEMORY;
}

/***********************************************************************
 *           URLDownloadToFileW (URLMON.@)
 *
 * Downloads URL szURL to rile szFileName and call lpfnCB callback to
 * report progress.
 *
 * PARAMS
 *  pCaller    [I] controlling IUnknown interface.
 *  szURL      [I] URL of the file to download
 *  szFileName [I] file name to store the content of the URL
 *  dwReserved [I] reserved - set to 0
 *  lpfnCB     [I] callback for progress report
 *
 * RETURNS
 *  S_OK on success
 *  E_OUTOFMEMORY when going out of memory
 */
HRESULT WINAPI URLDownloadToFileW(LPUNKNOWN pCaller,
				  LPCWSTR szURL,
				  LPCWSTR szFileName,
				  DWORD dwReserved,
				  LPBINDSTATUSCALLBACK lpfnCB)
{
    HINTERNET hinternet, hcon, hreq;
    BOOL r;
    CHAR buffer[0x1000];
    DWORD sz, total, written;
    DWORD total_size = 0xFFFFFFFF, arg_size = sizeof(total_size);
    URL_COMPONENTSW url;
    WCHAR host[0x80], path[0x100];
    HANDLE hfile;
    static const WCHAR wszAppName[]={'u','r','l','m','o','n','.','d','l','l',0};

    /* Note: all error codes would need to be checked agains real Windows behaviour... */
    TRACE("(%p,%s,%s,%08lx,%p) stub!\n", pCaller, debugstr_w(szURL), debugstr_w(szFileName), dwReserved, lpfnCB);

    if ((szURL == NULL) || (szFileName == NULL)) {
	FIXME(" cannot accept NULL strings !\n");
	return E_INVALIDARG;
    }

    /* Would be better to use the application name here rather than 'urlmon' :-/ */
    hinternet = InternetOpenW(wszAppName, INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
    if (hinternet == NULL) {
	return E_OUTOFMEMORY;
    }                                                                                                                             

    memset(&url, 0, sizeof(url));
    url.dwStructSize = sizeof(url);
    url.lpszHostName = host;
    url.dwHostNameLength = sizeof(host);
    url.lpszUrlPath = path;
    url.dwUrlPathLength = sizeof(path);

    if (!InternetCrackUrlW(szURL, 0, 0, &url)) {
	InternetCloseHandle(hinternet);
	return E_OUTOFMEMORY;
    }

    if (lpfnCB) {
	if (IBindStatusCallback_OnProgress(lpfnCB, 0, 0, BINDSTATUS_CONNECTING, url.lpszHostName) == E_ABORT) {
	    InternetCloseHandle(hinternet);
	    return S_OK;
	}
    }
    
    hcon = InternetConnectW(hinternet, url.lpszHostName, url.nPort,
                            url.lpszUserName, url.lpszPassword,
                            INTERNET_SERVICE_HTTP, 0, 0);
    if (!hcon) {
	InternetCloseHandle(hinternet);
	return E_OUTOFMEMORY;
    }
    
    hreq = HttpOpenRequestW(hcon, NULL, url.lpszUrlPath, NULL, NULL, NULL, 0, 0);
    if (!hreq) {
	InternetCloseHandle(hinternet);
	InternetCloseHandle(hcon);
	return E_OUTOFMEMORY;
    }                                                                                                                             

    if (!HttpSendRequestW(hreq, NULL, 0, NULL, 0)) {
	InternetCloseHandle(hinternet);
	InternetCloseHandle(hcon);
	InternetCloseHandle(hreq);
	return E_OUTOFMEMORY;
    }
    
    if (HttpQueryInfoW(hreq, HTTP_QUERY_CONTENT_LENGTH | HTTP_QUERY_FLAG_NUMBER,
		       &total_size, &arg_size, NULL)) {
	TRACE(" total size : %ld\n", total_size);
    }
    
    hfile = CreateFileW(szFileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
                        FILE_ATTRIBUTE_NORMAL, NULL );
    if (hfile == INVALID_HANDLE_VALUE) {
	return E_ACCESSDENIED;
    }
    
    if (lpfnCB) {
	if (IBindStatusCallback_OnProgress(lpfnCB, 0, total_size != 0xFFFFFFFF ? total_size : 0,
					   BINDSTATUS_BEGINDOWNLOADDATA, szURL) == E_ABORT) {
	    InternetCloseHandle(hreq);
	    InternetCloseHandle(hcon);
	    InternetCloseHandle(hinternet);
	    CloseHandle(hfile);
	    return S_OK;
	}
    }
    
    total = 0;
    while (1) {
	r = InternetReadFile(hreq, buffer, sizeof(buffer), &sz);
	if (!r) {
	    InternetCloseHandle(hreq);
	    InternetCloseHandle(hcon);
	    InternetCloseHandle(hinternet);
	    
	    CloseHandle(hfile);
	    return E_OUTOFMEMORY;	    
	}
	if (!sz)
	    break;
	
	total += sz;

	if (lpfnCB) {
	    if (IBindStatusCallback_OnProgress(lpfnCB, total, total_size != 0xFFFFFFFF ? total_size : 0,
					       BINDSTATUS_DOWNLOADINGDATA, szURL) == E_ABORT) {
		InternetCloseHandle(hreq);
		InternetCloseHandle(hcon);
		InternetCloseHandle(hinternet);
		CloseHandle(hfile);
		return S_OK;
	    }
	}
	
	if (!WriteFile(hfile, buffer, sz, &written, NULL)) {
	    InternetCloseHandle(hreq);
	    InternetCloseHandle(hcon);
	    InternetCloseHandle(hinternet);
	    
	    CloseHandle(hfile);
	    return E_OUTOFMEMORY;
	}
    }

    if (lpfnCB) {
	if (IBindStatusCallback_OnProgress(lpfnCB, total, total_size != 0xFFFFFFFF ? total_size : 0,
					   BINDSTATUS_ENDDOWNLOADDATA, szURL) == E_ABORT) {
	    InternetCloseHandle(hreq);
	    InternetCloseHandle(hcon);
	    InternetCloseHandle(hinternet);
	    CloseHandle(hfile);
	    return S_OK;
	}
    }
    
    InternetCloseHandle(hreq);
    InternetCloseHandle(hcon);
    InternetCloseHandle(hinternet);
    
    CloseHandle(hfile);

    return S_OK;
}

/***********************************************************************
 *           URLDownloadToCacheFileA (URLMON.@)
 */
HRESULT WINAPI URLDownloadToCacheFileA(LPUNKNOWN lpUnkCaller, LPCSTR szURL, LPSTR szFileName,
        DWORD dwBufLength, DWORD dwReserved, LPBINDSTATUSCALLBACK pBSC)
{
    LPWSTR url = NULL, file_name = NULL;
    int len;
    HRESULT hres;

    TRACE("(%p %s %p %ld %ld %p)\n", lpUnkCaller, debugstr_a(szURL), szFileName,
            dwBufLength, dwReserved, pBSC);

    if(szURL) {
        len = MultiByteToWideChar(CP_ACP, 0, szURL, -1, NULL, 0);
        url = HeapAlloc(GetProcessHeap(), 0, len*sizeof(WCHAR));
        MultiByteToWideChar(CP_ACP, 0, szURL, -1, url, -1);
    }

    if(szFileName)
        file_name = HeapAlloc(GetProcessHeap(), 0, dwBufLength*sizeof(WCHAR));

    hres = URLDownloadToCacheFileW(lpUnkCaller, url, file_name, dwBufLength*sizeof(WCHAR),
            dwReserved, pBSC);

    if(SUCCEEDED(hres) && file_name)
        WideCharToMultiByte(CP_ACP, 0, file_name, -1, szFileName, dwBufLength, NULL, NULL);

    HeapFree(GetProcessHeap(), 0, url);
    HeapFree(GetProcessHeap(), 0, file_name);

    return hres;
}

/***********************************************************************
 *           URLDownloadToCacheFileW (URLMON.@)
 */
HRESULT WINAPI URLDownloadToCacheFileW(LPUNKNOWN lpUnkCaller, LPCWSTR szURL, LPWSTR szFileName,
                DWORD dwBufLength, DWORD dwReserved, LPBINDSTATUSCALLBACK pBSC)
{
    FIXME("(%p %s %p %ld %ld %p)\n", lpUnkCaller, debugstr_w(szURL), szFileName,
            dwBufLength, dwReserved, pBSC);
    return E_NOTIMPL;
}

/***********************************************************************
 *           HlinkSimpleNavigateToString (URLMON.@)
 */
HRESULT WINAPI HlinkSimpleNavigateToString( LPCWSTR szTarget,
    LPCWSTR szLocation, LPCWSTR szTargetFrameName, IUnknown *pUnk,
    IBindCtx *pbc, IBindStatusCallback *pbsc, DWORD grfHLNF, DWORD dwReserved)
{
    FIXME("%s\n", debugstr_w( szTarget ) );
    return E_NOTIMPL;
}

/***********************************************************************
 *           HlinkNavigateString (URLMON.@)
 */
HRESULT WINAPI HlinkNavigateString( IUnknown *pUnk, LPCWSTR szTarget )
{
    TRACE("%p %s\n", pUnk, debugstr_w( szTarget ) );
    return HlinkSimpleNavigateToString( 
               szTarget, NULL, NULL, pUnk, NULL, NULL, 0, 0 );
}

/***********************************************************************
 *           GetSoftwareUpdateInfo (URLMON.@)
 */
HRESULT WINAPI GetSoftwareUpdateInfo( LPCWSTR szDistUnit, LPSOFTDISTINFO psdi )
{
    FIXME("%s %p\n", debugstr_w(szDistUnit), psdi );
    return E_FAIL;
}