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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Sun Microsystems, Inc.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Created by Cyrille Moureaux <Cyrille.Moureaux@sun.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
#include "nsMapiAddressBook.h"
#include "nsAutoLock.h"

#include "prlog.h"

#ifdef PR_LOGGING
static PRLogModuleInfo* gMapiAddressBookLog
    = PR_NewLogModule("nsMapiAddressBookLog");
#endif

#define PRINTF(args) PR_LOG(gMapiAddressBookLog, PR_LOG_DEBUG, args)


HMODULE nsMapiAddressBook::mLibrary = NULL ;
PRInt32 nsMapiAddressBook::mLibUsage = 0 ;
LPMAPIINITIALIZE nsMapiAddressBook::mMAPIInitialize = NULL ;
LPMAPIUNINITIALIZE nsMapiAddressBook::mMAPIUninitialize = NULL ;
LPMAPIALLOCATEBUFFER nsMapiAddressBook::mMAPIAllocateBuffer = NULL ;
LPMAPIFREEBUFFER nsMapiAddressBook::mMAPIFreeBuffer = NULL ;
LPMAPILOGONEX nsMapiAddressBook::mMAPILogonEx = NULL ;

BOOL nsMapiAddressBook::mInitialized = FALSE ;
BOOL nsMapiAddressBook::mLogonDone = FALSE ;
LPMAPISESSION nsMapiAddressBook::mRootSession = NULL ;
LPADRBOOK nsMapiAddressBook::mRootBook = NULL ;

BOOL nsMapiAddressBook::LoadMapiLibrary(void)
{
    if (mLibrary) { ++ mLibUsage ; return TRUE ; }
    HMODULE libraryHandle = LoadLibrary("MAPI32.DLL") ;

    if (!libraryHandle) { return FALSE ; }
    FARPROC entryPoint = GetProcAddress(libraryHandle, "MAPIGetNetscapeVersion") ;

    if (entryPoint) {
        FreeLibrary(libraryHandle) ;
        libraryHandle = LoadLibrary("MAPI32BAK.DLL") ;
        if (!libraryHandle) { return FALSE ; }
    }
    mLibrary = libraryHandle ;
    ++ mLibUsage ;
    mMAPIInitialize = reinterpret_cast<LPMAPIINITIALIZE>(GetProcAddress(mLibrary, "MAPIInitialize")) ;
    if (!mMAPIInitialize) { return FALSE ; }
    mMAPIUninitialize = reinterpret_cast<LPMAPIUNINITIALIZE>(GetProcAddress(mLibrary, "MAPIUninitialize")) ;
    if (!mMAPIUninitialize) { return FALSE ; }
    mMAPIAllocateBuffer = reinterpret_cast<LPMAPIALLOCATEBUFFER>(GetProcAddress(mLibrary, "MAPIAllocateBuffer")) ;
    if (!mMAPIAllocateBuffer) { return FALSE ; }
    mMAPIFreeBuffer = reinterpret_cast<LPMAPIFREEBUFFER>(GetProcAddress(mLibrary, "MAPIFreeBuffer")) ;
    if (!mMAPIFreeBuffer) { return FALSE ; }
    mMAPILogonEx = reinterpret_cast<LPMAPILOGONEX>(GetProcAddress(mLibrary, "MAPILogonEx")) ;
    if (!mMAPILogonEx) { return FALSE ; }
    MAPIINIT_0 mapiInit = { MAPI_INIT_VERSION, MAPI_MULTITHREAD_NOTIFICATIONS } ;
    HRESULT retCode = mMAPIInitialize(&mapiInit) ;

    if (HR_FAILED(retCode)) { 
        PRINTF(("Cannot initialize MAPI %08x.\n", retCode)) ; return FALSE ;
    }
    mInitialized = TRUE ;
    retCode = mMAPILogonEx(0, NULL, NULL,
                           MAPI_NO_MAIL | 
                           MAPI_USE_DEFAULT | 
                           MAPI_EXTENDED | 
                           MAPI_NEW_SESSION,
                           &mRootSession) ;
    if (HR_FAILED(retCode)) { 
        PRINTF(("Cannot logon to MAPI %08x.\n", retCode)) ; return FALSE ;
    }
    mLogonDone = TRUE ;
    retCode = mRootSession->OpenAddressBook(0, NULL, 0, &mRootBook) ;
    if (HR_FAILED(retCode)) { 
        PRINTF(("Cannot open MAPI address book %08x.\n", retCode)) ;
    }
    return HR_SUCCEEDED(retCode) ;
}

void nsMapiAddressBook::FreeMapiLibrary(void)
{
    if (mLibrary) {
        if (-- mLibUsage == 0) {
            {
                if (mRootBook) { mRootBook->Release() ; }
                if (mRootSession) {
                    if (mLogonDone) { 
                        mRootSession->Logoff(NULL, 0, 0) ; 
                        mLogonDone = FALSE ;
                    }
                    mRootSession->Release() ;
                }
                if (mInitialized) { 
                    mMAPIUninitialize() ; 
                    mInitialized = FALSE ;
                }
            }  
            FreeLibrary(mLibrary) ;
            mLibrary = NULL ; 
        }
    }
}

nsMapiAddressBook::nsMapiAddressBook(void)
: nsAbWinHelper()
{
    BOOL result = Initialize() ;

    NS_ASSERTION(result == TRUE, "Couldn't initialize Mapi Helper") ;
    MOZ_COUNT_CTOR(nsMapiAddressBook) ;
}

nsMapiAddressBook::~nsMapiAddressBook(void)
{
    nsAutoLock guard(mMutex) ;

    FreeMapiLibrary() ;
    MOZ_COUNT_DTOR(nsMapiAddressBook) ;
}

BOOL nsMapiAddressBook::Initialize(void)
{
    if (mAddressBook) { return TRUE ; }
    nsAutoLock guard(mMutex) ;

    if (!LoadMapiLibrary()) {
        PRINTF(("Cannot load library.\n")) ;
        return FALSE ;
    }
    mAddressBook = mRootBook ; 
    return TRUE ;
}

void nsMapiAddressBook::AllocateBuffer(ULONG aByteCount, LPVOID *aBuffer)
{
    mMAPIAllocateBuffer(aByteCount, aBuffer) ;
}

void nsMapiAddressBook::FreeBuffer(LPVOID aBuffer)
{
    mMAPIFreeBuffer(aBuffer) ;
}