mirror of
https://github.com/rn10950/RetroZilla.git
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92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released March 31,
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* 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Sean Su <ssu@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nscore.h"
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#include "nsInstall.h" // for error codes
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#include "prmem.h"
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#include "nsInstallBitwise.h"
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#ifdef _WINDOWS
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#include <windows.h>
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#include <winreg.h>
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#endif
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#define KEY_SHARED_DLLS "Software\\Microsoft\\Windows\\CurrentVersion\\SharedDlls"
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PRInt32 RegisterSharedFile(const char *file, PRBool bAlreadyExists)
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{
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PRInt32 rv = nsInstall::SUCCESS;
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#ifdef WIN32
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HKEY root;
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HKEY keyHandle = 0;
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LONG result;
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DWORD type = REG_DWORD;
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DWORD dwDisposition;
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PRUint32 valbuf = 0;
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PRUint32 valbufsize;
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valbufsize = sizeof(PRUint32);
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root = HKEY_LOCAL_MACHINE;
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result = RegCreateKeyEx(root, KEY_SHARED_DLLS, 0, nsnull, REG_OPTION_NON_VOLATILE, KEY_READ | KEY_WRITE, nsnull, &keyHandle, &dwDisposition);
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if(ERROR_SUCCESS == result)
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{
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result = RegQueryValueEx(keyHandle, file, nsnull, &type, (LPBYTE)&valbuf, (LPDWORD)&valbufsize);
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if((ERROR_SUCCESS == result) && (type == REG_DWORD))
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++valbuf;
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else
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{
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valbuf = 1;
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if(bAlreadyExists == PR_TRUE)
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++valbuf;
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}
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RegSetValueEx(keyHandle, file, 0, REG_DWORD, (LPBYTE)&valbuf, valbufsize);
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RegCloseKey(keyHandle);
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}
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else
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rv = nsInstall::UNEXPECTED_ERROR;
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#endif
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return(rv);
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}
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