shdocvw_main.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

/*
 * SHDOCVW - Internet Explorer Web Control
 *
 * Copyright 2001 John R. Sheets (for CodeWeavers)
 * Copyright 2004 Mike McCormack (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
 */

#include "config.h"

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

#define COBJMACROS
#define COM_NO_WINDOWS_H

#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winuser.h"
#include "winnls.h"
#include "ole2.h"
#include "shlwapi.h"

#include "shdocvw.h"
#include "uuids.h"
#include "urlmon.h"

#include "wine/unicode.h"
#include "wine/debug.h"

#include "initguid.h"

WINE_DEFAULT_DEBUG_CHANNEL(shdocvw);

LONG SHDOCVW_refCount = 0;

static const WCHAR szMozDlPath[] = {
    'S','o','f','t','w','a','r','e','\\','R','e','a','c','t','O','S','\\',
    's','h','d','o','c','v','w',0
};

DEFINE_GUID( CLSID_MozillaBrowser, 0x1339B54C,0x3453,0x11D2,0x93,0xB9,0x00,0x00,0x00,0x00,0x00,0x00);

typedef HRESULT (WINAPI *fnGetClassObject)(REFCLSID rclsid, REFIID iid, LPVOID *ppv);
typedef HRESULT (WINAPI *fnCanUnloadNow)(void);

HINSTANCE shdocvw_hinstance = 0;
static HMODULE SHDOCVW_hshell32 = 0;
static HMODULE hMozCtl = (HMODULE)~0UL;


/* convert a guid to a wide character string */
static void SHDOCVW_guid2wstr( const GUID *guid, LPWSTR wstr )
{
    char str[40];

    sprintf(str, "{%08lX-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
           guid->Data1, guid->Data2, guid->Data3,
           guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
           guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7] );
    MultiByteToWideChar( CP_ACP, 0, str, -1, wstr, 40 );
}

static BOOL SHDOCVW_GetMozctlPath( LPWSTR szPath, DWORD sz )
{
    DWORD r, type;
    BOOL ret = FALSE;
    HKEY hkey;
    static const WCHAR szPre[] = {
        'S','o','f','t','w','a','r','e','\\',
        'C','l','a','s','s','e','s','\\',
        'C','L','S','I','D','\\',0 };
    static const WCHAR szPost[] = {
        '\\','I','n','p','r','o','c','S','e','r','v','e','r','3','2',0 };
    WCHAR szRegPath[(sizeof(szPre)+sizeof(szPost))/sizeof(WCHAR)+40];

    strcpyW( szRegPath, szPre );
    SHDOCVW_guid2wstr( &CLSID_MozillaBrowser, &szRegPath[strlenW(szRegPath)] );
    strcatW( szRegPath, szPost );

    TRACE("key = %s\n", debugstr_w( szRegPath ) );

    r = RegOpenKeyW( HKEY_LOCAL_MACHINE, szRegPath, &hkey );
    if( r != ERROR_SUCCESS )
        return FALSE;

    r = RegQueryValueExW( hkey, NULL, NULL, &type, (LPBYTE)szPath, &sz );
    ret = ( r == ERROR_SUCCESS ) && ( type == REG_SZ );
    RegCloseKey( hkey );

    return ret;
}

/*************************************************************************
 * SHDOCVW DllMain
 */
BOOL WINAPI DllMain(HINSTANCE hinst, DWORD fdwReason, LPVOID fImpLoad)
{
	TRACE("%p 0x%lx %p\n", hinst, fdwReason, fImpLoad);
	switch (fdwReason)
	{
	  case DLL_PROCESS_ATTACH:
	    shdocvw_hinstance = hinst;
	    break;
	  case DLL_PROCESS_DETACH:
	    if (SHDOCVW_hshell32) FreeLibrary(SHDOCVW_hshell32);
	    if (hMozCtl && hMozCtl != (HMODULE)~0UL) FreeLibrary(hMozCtl);
	    break;
	}
	return TRUE;
}

/*************************************************************************
 *              DllCanUnloadNow (SHDOCVW.@)
 */
HRESULT WINAPI DllCanUnloadNow(void)
{
    HRESULT moz_can_unload = S_OK;
    fnCanUnloadNow pCanUnloadNow;

    if (hMozCtl)
    {
        pCanUnloadNow = (fnCanUnloadNow)
            GetProcAddress(hMozCtl, "DllCanUnloadNow");
        if (pCanUnloadNow)
            moz_can_unload = pCanUnloadNow();
    }

    if (moz_can_unload == S_OK && SHDOCVW_refCount == 0)
        return S_OK;

    return S_FALSE;
}

/*************************************************************************
 *              SHDOCVW_TryDownloadMozillaControl
 */
typedef struct _IBindStatusCallbackImpl {
    const IBindStatusCallbackVtbl *vtbl;
    LONG ref;
    HWND hDialog;
    BOOL *pbCancelled;
} IBindStatusCallbackImpl;

static HRESULT WINAPI
dlQueryInterface( IBindStatusCallback* This, REFIID riid, void** ppvObject )
{
    if (ppvObject == NULL) return E_POINTER;
    
    if( IsEqualIID(riid, &IID_IUnknown) ||
        IsEqualIID(riid, &IID_IBindStatusCallback))
    {
        IBindStatusCallback_AddRef( This );
        *ppvObject = This;
        return S_OK;
    }
    return E_NOINTERFACE;
}

static ULONG WINAPI dlAddRef( IBindStatusCallback* iface )
{
    IBindStatusCallbackImpl *This = (IBindStatusCallbackImpl *) iface;

    SHDOCVW_LockModule();
    
    return InterlockedIncrement( &This->ref );
}

static ULONG WINAPI dlRelease( IBindStatusCallback* iface )
{
    IBindStatusCallbackImpl *This = (IBindStatusCallbackImpl *) iface;
    DWORD ref = InterlockedDecrement( &This->ref );
    
    if( !ref )
    {
        DestroyWindow( This->hDialog );
        HeapFree( GetProcessHeap(), 0, This );
    }

    SHDOCVW_UnlockModule();
    
    return ref;
}

static HRESULT WINAPI
dlOnStartBinding( IBindStatusCallback* iface, DWORD dwReserved, IBinding* pib)
{
    ERR("\n");
    return S_OK;
}

static HRESULT WINAPI
dlGetPriority( IBindStatusCallback* iface, LONG* pnPriority)
{
    ERR("\n");
    return S_OK;
}

static HRESULT WINAPI
dlOnLowResource( IBindStatusCallback* iface, DWORD reserved)
{
    ERR("\n");
    return S_OK;
}

static HRESULT WINAPI
dlOnProgress( IBindStatusCallback* iface, ULONG ulProgress,
              ULONG ulProgressMax, ULONG ulStatusCode, LPCWSTR szStatusText)
{
    IBindStatusCallbackImpl *This = (IBindStatusCallbackImpl *) iface;
    HWND hItem;
    LONG r;

    hItem = GetDlgItem( This->hDialog, 1000 );
    if( hItem && ulProgressMax )
        SendMessageW(hItem,PBM_SETPOS,(ulProgress*100)/ulProgressMax,0);

    hItem = GetDlgItem(This->hDialog, 104);
    if( hItem )
        SendMessageW(hItem,WM_SETTEXT, 0, (LPARAM) szStatusText);

    SetLastError(0);
    r = GetWindowLongPtrW( This->hDialog, GWLP_USERDATA );
    if( r || GetLastError() )
    {
        *This->pbCancelled = TRUE;
        ERR("Cancelled\n");
        return E_ABORT;
    }

    return S_OK;
}

static HRESULT WINAPI
dlOnStopBinding( IBindStatusCallback* iface, HRESULT hresult, LPCWSTR szError)
{
    ERR("\n");
    return S_OK;
}

static HRESULT WINAPI
dlGetBindInfo( IBindStatusCallback* iface, DWORD* grfBINDF, BINDINFO* pbindinfo)
{
    ERR("\n");
    return S_OK;
}

static HRESULT WINAPI
dlOnDataAvailable( IBindStatusCallback* iface, DWORD grfBSCF,
                   DWORD dwSize, FORMATETC* pformatetc, STGMEDIUM* pstgmed)
{
    ERR("\n");
    return S_OK;
}

static HRESULT WINAPI
dlOnObjectAvailable( IBindStatusCallback* iface, REFIID riid, IUnknown* punk)
{
    ERR("\n");
    return S_OK;
}

static const IBindStatusCallbackVtbl dlVtbl =
{
    dlQueryInterface,
    dlAddRef,
    dlRelease,
    dlOnStartBinding,
    dlGetPriority,
    dlOnLowResource,
    dlOnProgress,
    dlOnStopBinding,
    dlGetBindInfo,
    dlOnDataAvailable,
    dlOnObjectAvailable
};

static IBindStatusCallback* create_dl(HWND dlg, BOOL *pbCancelled)
{
    IBindStatusCallbackImpl *This;

    This = HeapAlloc( GetProcessHeap(), 0, sizeof *This );