79 lines
2.2 KiB
C++
79 lines
2.2 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this File are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code,
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* released March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* 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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#include "nscore.h"
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#include "nsFileSpec.h"
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#include "nsFileStream.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(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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