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736 lines
20 KiB
736 lines
20 KiB
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997.
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//
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// File: N C R E G 2 . C P P
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//
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// Contents: Common routines for dealing with the registry.
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//
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// Notes:
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//
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// Author: CWill 27 Mar 1997
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//
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//----------------------------------------------------------------------------
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#include <pch.h>
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#pragma hdrstop
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#include "ncerror.h"
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#include "ncipaddr.h"
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#include "ncmem.h"
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#include "ncreg.h"
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#include "ncstring.h"
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#include <regstr.h>
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static const WCHAR c_szSubkeyServices[] = REGSTR_PATH_SERVICES;
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const struct REG_TYPE_MAP
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{
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DWORD dwPsuedoType;
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DWORD dwType;
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};
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REG_TYPE_MAP c_rgrtmTypes[] =
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{
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{REG_BOOL, REG_DWORD},
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{REG_IP, REG_SZ},
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};
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DWORD DwRealTypeFromPsuedoType(const DWORD dwPsuedoType)
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{
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for (UINT cLoop = 0; cLoop < celems(c_rgrtmTypes); cLoop++)
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{
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if (dwPsuedoType == c_rgrtmTypes[cLoop].dwPsuedoType)
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{
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return c_rgrtmTypes[cLoop].dwType;
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}
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}
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return dwPsuedoType;
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}
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struct SPECIAL_KEY_MAP
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{
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HKEY hkeyPseudo;
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HKEY hkeyRoot;
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PCWSTR pszSubKey;
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};
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static const SPECIAL_KEY_MAP c_rgskmSpec[] =
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{
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HKLM_SVCS, HKEY_LOCAL_MACHINE, c_szSubkeyServices,
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};
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//+---------------------------------------------------------------------------
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//
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// Member: HkeyTrueParent
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//
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// Purpose: To get a real handle to a key from a pseudo handle
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//
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// Arguments:
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// hkeyIn The pseudo key name
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// samDesired The access requested of the key
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// rghkeySpec An array of the special keys.
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//
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// Returns: The handle to the opened key or NULL
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//
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// Author: CWill Apr 30 1997
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//
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// Notes:
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//
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HKEY HkeyTrueParent(const HKEY hkeyIn, const REGSAM samDesired,
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HKEY rghkeySpec[])
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{
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HKEY hkeyRet = hkeyIn;
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for (UINT cKey = 0; cKey < celems(c_rgskmSpec); cKey++)
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{
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// Check arb->hkey for one of "our" well known keys.
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if (c_rgskmSpec[cKey].hkeyPseudo == hkeyIn)
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{
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if (!rghkeySpec[cKey])
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{
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// First time a special key was used. We need to cache it.
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#ifdef DBG
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HRESULT hr =
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#endif // DBG
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HrRegOpenKeyEx(
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c_rgskmSpec[cKey].hkeyRoot,
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c_rgskmSpec[cKey].pszSubKey,
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samDesired,
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&rghkeySpec[cKey]);
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// If we fail to open the key, make sure the output
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// parameter was nulled. This will allow us to proceed
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// without really handling the error as hkeyParent
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// will be set to null below and the following
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// HrRegOpenKey will fail. We will then handle the failure
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// of that.
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AssertSz(FImplies(FAILED(hr), !rghkeySpec[cKey]), "Key not NULL");
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}
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hkeyRet = rghkeySpec[cKey];
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break;
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}
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}
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return hkeyRet;
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}
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VOID RegSafeCloseKeyArray(HKEY rghkey[], UINT cElems)
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{
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for (UINT cKey = 0; cKey < cElems; cKey++)
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{
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RegSafeCloseKey(rghkey[cKey]);
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}
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return;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: TranslateFromRegToData
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//
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// Purpose: Translates the data retrieved from the registry to a the user
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// data's storage format
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//
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// Arguments:
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// dwType The registry pseudo type that is being translated
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// pbData Where the data gets stored
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// pbBuf A buffer that stores the registry data
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//
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// Returns: Nothing.
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//
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// Author: CWill Apr 30 1997
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//
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// Notes:
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//
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VOID TranslateFromRegToData(DWORD dwType, BYTE* pbData, BYTE* pbBuf)
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{
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// Take the data from the registry and happily convert it into
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// usable data
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switch (dwType)
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{
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#ifdef DBG
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default:
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{
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AssertSz(FALSE, "Unknown registry type");
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break;
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}
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#endif // DBG
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case REG_IP:
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{
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// Convert the stringized form of the ip address
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// into a DWORD. (The actual 32-bit IP address.)
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DWORD dwIpAddr = IpPszToHostAddr((WCHAR*)pbBuf);
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*((DWORD*)pbData) = dwIpAddr;
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break;
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}
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case REG_BOOL:
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{
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// Form the boolean as 'TRUE' or 'FALSE' based on
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// whether the data is non-zero or zero respectively.
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DWORD dwData = *((DWORD*)pbBuf);
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*((BOOL*)pbData) = (!!dwData);
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break;
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}
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case REG_DWORD:
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{
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// DWORDs are direct assignments
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*((DWORD*)pbData) = *((DWORD*)pbBuf);
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break;
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}
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case REG_SZ:
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{
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// Make a copy of the string
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*((PWSTR*) pbData) = SzDupSz((PWSTR)pbBuf);
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break;
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}
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}
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return;
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}
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inline VOID UseDefaultRegValue(DWORD dwType, BYTE* pbData, BYTE* pbDefault)
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{
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AssertSz((pbData && pbDefault), "UseDefaultRegValue : Invalid params");
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AssertSz(pbDefault, "There is no default registry value");
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TranslateFromRegToData(dwType, pbData, pbDefault);
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return;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CbSizeOfDataToReg
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//
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// Purpose: To determine the size of buffer needed to store the data
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//
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// Arguments:
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// dwType The registry pseudo type that is being translated
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// pbData The data that has to be translated
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//
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// Returns: The size of buffer need to store the data
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//
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// Author: CWill Apr 30 1997
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//
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// Notes:
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//
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DWORD CbSizeOfDataToReg(DWORD dwType, const BYTE* pbData)
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{
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DWORD cbData = 0;
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switch (dwType)
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{
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#ifdef DBG
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default:
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{
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AssertSz(FALSE, "Unknown registry type");
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break;
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}
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#endif // DBG
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case REG_IP:
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{
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// Convert the 32-bit IP address to a stringized form.
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DWORD dwIpAddr = *((DWORD*)pbData);
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WCHAR pszIpAddr [32];
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IpHostAddrToPsz(dwIpAddr, pszIpAddr);
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cbData = CbOfSzAndTerm(pszIpAddr);
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break;
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}
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// Boolean values are stored as DWORDs
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case REG_BOOL:
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case REG_DWORD:
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{
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cbData = sizeof(DWORD);
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break;
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}
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case REG_SZ:
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case REG_EXPAND_SZ:
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{
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cbData = CbOfSzAndTerm(*((PCWSTR*)pbData));
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break;
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}
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}
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AssertSz(cbData, "We should have a size");
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return cbData;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: TranslateFromDataToReg
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//
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// Purpose: Translates user data to a format the can be stored in the
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// registry
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//
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// Arguments:
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// dwType The registry pseudo type that is being translated
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// pbData The data that has to be translated
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// pbBuf A buffer that stores the registry data
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//
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// Returns: Nothing.
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//
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// Author: CWill Apr 30 1997
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//
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// Notes:
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//
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VOID
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TranslateFromDataToReg(
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IN DWORD dwType,
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IN const BYTE* pbData,
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OUT const BYTE* pbBuf)
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{
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switch (dwType)
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{
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#ifdef DBG
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default:
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{
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AssertSz(FALSE, "Unknown registry type");
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break;
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}
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#endif // DBG
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case REG_IP:
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{
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// Convert the 32-bit IP address to a stringized form.
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DWORD dwIpAddr = *((DWORD*)pbData);
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WCHAR pszIpAddr [32];
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IpHostAddrToPsz (dwIpAddr, pszIpAddr);
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// Copy the string
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lstrcpyW((PWSTR)pbBuf, pszIpAddr);
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break;
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}
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case REG_BOOL:
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{
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// Form the boolean as 'TRUE' or 'FALSE' based on
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// whether the data is non-zero or zero respectively.
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DWORD dwData = *((DWORD*)pbData);
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*((BOOL*)pbBuf) = (!!dwData);
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break;
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}
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case REG_DWORD:
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{
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// DWORDs are direct assignments
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*((DWORD*)pbBuf) = *((DWORD*)pbData);
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break;
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}
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case REG_SZ:
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case REG_EXPAND_SZ:
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{
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// Make a copy of the string
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lstrcpyW((PWSTR)pbBuf, *((PCWSTR*)pbData));
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AssertSz(CbOfSzAndTerm(*((PCWSTR*)pbData)), "Zero length string");
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break;
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}
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}
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return;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: RegReadValues
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//
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// Purpose: To read a table of information from the registry into a user
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// defined data structure.
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//
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// Arguments:
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// crb The count of entries in the REGBATCH structure
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// arb The pointer to the REGBATCH structure
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// pbUserData The pointer to the source structure that is to retrieve
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// the data from the registry
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// samDesired The requested key access mask
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//
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// Returns: Nothing.
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//
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// Author: CWill Apr 30 1997
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//
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// Notes:
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//
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VOID RegReadValues(
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IN INT crb,
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IN const REGBATCH* arb,
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OUT const BYTE* pbUserData,
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IN REGSAM samDesired)
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{
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AssertSz(FImplies(crb, arb), "Count without an array");
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HRESULT hr = S_OK;
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const REGBATCH* prbLast = NULL;
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HKEY rghkeySpec[celems(c_rgskmSpec)] = {0};
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HKEY hkey = NULL;
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while (crb--)
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{
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BYTE* pbData = (BYTE*)(pbUserData + arb->cbOffset);
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// Open the key if we need to.
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// We don't need to if it was the same as the previous one used.
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if ((!prbLast )
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|| (prbLast->hkey != arb->hkey)
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|| (prbLast->pszSubkey != arb->pszSubkey))
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{
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HKEY hkeyParent;
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hkeyParent = HkeyTrueParent (arb->hkey, samDesired, rghkeySpec);
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// Close the previous key we used.
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RegSafeCloseKey (hkey);
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// Open the new key.
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#ifdef DBG
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hr =
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#endif // DBG
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HrRegOpenKeyEx (hkeyParent, arb->pszSubkey, samDesired, &hkey);
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AssertSz(FImplies(FAILED(hr), !hkey), "HrRegOpenKey not NULLing");
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}
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// Only continue if we have a key.
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if (hkey)
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{
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DWORD dwType = arb->dwType;
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// We can't read NULL registry values
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if (REG_CREATE != dwType)
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{
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DWORD cbData = 0;
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BYTE* pbStack = NULL;
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DWORD dwRealType = DwRealTypeFromPsuedoType(dwType);
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// Ensure that we fail the first time around so that we can see how
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// big a buffer is needed
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(VOID) HrRegQueryValueEx(hkey, arb->pszValueName, &dwRealType,
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NULL, &cbData);
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// Allocate memory on the stack to serve as our temporary buffer.
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#ifndef STACK_ALLOC_DOESNT_WORK
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pbStack = (BYTE*)MemAlloc (cbData);
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#else // !STACK_ALLOC_DOESNT_WORK
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pbStack = (BYTE*)PvAllocOnStack(cbData);
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#endif // !STACK_ALLOC_DOESNT_WORK
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if(pbStack)
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{
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hr = HrRegQueryValueEx(hkey, arb->pszValueName, &dwRealType,
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pbStack, &cbData);
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}
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else
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{
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hr = E_OUTOFMEMORY;
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}
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if (S_OK == hr)
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{
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// Make sure its the type we were expecting.
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AssertSz((dwRealType == DwRealTypeFromPsuedoType(dwType)),
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"Value types do no match");
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TranslateFromRegToData(dwType, pbData, pbStack);
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}
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else
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{
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UseDefaultRegValue(dwType, pbData, arb->pbDefault);
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|
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TraceHr (ttidError, FAL, hr,
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HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) == hr,
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"RegReadValues: Could not open value %S", arb->pszValueName);
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}
|
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#ifndef STACK_ALLOC_DOESNT_WORK
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MemFree (pbStack);
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#endif // STACK_ALLOC_DOESNT_WORK
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}
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}
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else
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{
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TraceTag(ttidError, "RegReadValues: NULL key for %S", arb->pszSubkey);
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UseDefaultRegValue(arb->dwType, pbData, arb->pbDefault);
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}
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|
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// Advance prbLast or set it to the first one if this is the
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// first time through.
|
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if (prbLast)
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{
|
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prbLast++;
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}
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else
|
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{
|
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prbLast = arb;
|
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}
|
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|
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arb++;
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}
|
|
|
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// Clean up
|
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RegSafeCloseKey(hkey);
|
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RegSafeCloseKeyArray(rghkeySpec, celems(rghkeySpec));
|
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|
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return;
|
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}
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: HrRegWriteValues
|
|
//
|
|
// Purpose: To write a table of information to the registry from a user
|
|
// defined data structure.
|
|
//
|
|
// Arguments:
|
|
// crb The count of entries in the REGBATCH structure
|
|
// arb The pointer to the REGBATCH structure
|
|
// pbUserData The pointer to the source structure that provides
|
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// the data that is to be written to the registry
|
|
// dwOptions Options to be used when creating the registry keys
|
|
// samDesired The requested key access mask
|
|
//
|
|
// Returns: S_OK or an HRESULT_FROM_WIN32 error code.
|
|
//
|
|
// Author: CWill Apr 30 1997
|
|
//
|
|
// Notes:
|
|
//
|
|
HRESULT HrRegWriteValues(
|
|
INT crb,
|
|
const REGBATCH* arb,
|
|
const BYTE* pbUserData,
|
|
DWORD dwOptions,
|
|
REGSAM samDesired)
|
|
{
|
|
AssertSz(FImplies(crb, arb), "HrWriteValues : Count with no array");
|
|
|
|
HRESULT hr = S_OK;
|
|
const REGBATCH* prbLast = NULL;
|
|
HKEY hkey = NULL;
|
|
HKEY rghkeySpec[celems(c_rgskmSpec)] = {0};
|
|
|
|
while (crb--)
|
|
{
|
|
BYTE* pbData = const_cast<BYTE*>(pbUserData + arb->cbOffset);
|
|
|
|
// Open the key if we need to.
|
|
// We don't need to if it was the same as the previous one used.
|
|
if ((!prbLast)
|
|
|| (prbLast->hkey != arb->hkey)
|
|
|| (prbLast->pszSubkey != arb->pszSubkey))
|
|
{
|
|
HKEY hkeyParent;
|
|
|
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hkeyParent = HkeyTrueParent(arb->hkey, samDesired, rghkeySpec);
|
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|
|
// Close the previous key we used.
|
|
RegSafeCloseKey(hkey);
|
|
|
|
// Open the new key.
|
|
DWORD dwDisposition;
|
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hr = HrRegCreateKeyEx(hkeyParent, arb->pszSubkey, dwOptions,
|
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samDesired, NULL, &hkey, &dwDisposition);
|
|
|
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AssertSz(FImplies(FAILED(hr), !hkey), "HrRegCreateKey not NULLing");
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
TraceError("HrRegWriteValues: failed to open parent key", hr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Should definately have hkey by now.
|
|
AssertSz(hkey, "Why no key?");
|
|
|
|
//
|
|
// Format the data to be put into the registry
|
|
//
|
|
|
|
DWORD dwType = arb->dwType;
|
|
|
|
// If all we want to do is create the key, then we are already done.
|
|
if (REG_CREATE != dwType)
|
|
{
|
|
DWORD dwRealType = DwRealTypeFromPsuedoType(dwType);
|
|
DWORD cbReg = CbSizeOfDataToReg(dwType, pbData);
|
|
BYTE* pbReg = NULL;
|
|
|
|
AssertSz(cbReg, "We must have some data");
|
|
|
|
#ifndef STACK_ALLOC_DOESNT_WORK
|
|
pbReg = new BYTE[cbReg];
|
|
#else // !STACK_ALLOC_DOESNT_WORK
|
|
pbReg = reinterpret_cast<BYTE*>(PvAllocOnStack(cbReg));
|
|
#endif // !STACK_ALLOC_DOESNT_WORK
|
|
|
|
if(!pbReg)
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
break;
|
|
}
|
|
|
|
TranslateFromDataToReg(dwType, pbData, pbReg);
|
|
|
|
// Write the data to the registry.
|
|
hr = HrRegSetValueEx(
|
|
hkey,
|
|
arb->pszValueName,
|
|
dwRealType,
|
|
pbReg,
|
|
cbReg);
|
|
|
|
#ifndef STACK_ALLOC_DOESNT_WORK
|
|
// Must have this call before the break
|
|
delete [] pbReg;
|
|
#endif // STACK_ALLOC_DOESNT_WORK
|
|
|
|
}
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Advance prbLast or set it to the first one if this is the
|
|
// first time through.
|
|
if (prbLast)
|
|
{
|
|
prbLast++;
|
|
}
|
|
else
|
|
{
|
|
prbLast = arb;
|
|
}
|
|
|
|
arb++;
|
|
}
|
|
|
|
RegSafeCloseKey(hkey);
|
|
RegSafeCloseKeyArray(rghkeySpec, celems(rghkeySpec));
|
|
|
|
TraceError("HrWriteValues", hr);
|
|
return hr;
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: HrRegWriteValueTable
|
|
//
|
|
// Purpose: To write a table of values to the registry from a user
|
|
// defined data structure.
|
|
//
|
|
// Arguments:
|
|
// hkeyRoot The key to which the values are written
|
|
// cvt The count of entries in the VALUETABLE structure
|
|
// avt The pointer to the VALUETABLE structure
|
|
// pbUserData The pointer to the source structure that provides
|
|
// the data that is to be written to the registry
|
|
// dwOptions Options to be used when creating the registry keys
|
|
// samDesired The requested key access mask
|
|
//
|
|
// Returns: S_OK or an HRESULT_FROM_WIN32 error code.
|
|
//
|
|
// Author: CWill 06/26/97
|
|
//
|
|
// Notes:
|
|
//
|
|
HRESULT HrRegWriteValueTable(
|
|
HKEY hkeyRoot,
|
|
INT cvt,
|
|
const VALUETABLE* avt,
|
|
const BYTE* pbUserData,
|
|
DWORD dwOptions,
|
|
REGSAM samDesired)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
while (cvt--)
|
|
{
|
|
BYTE* pbData = NULL;
|
|
DWORD dwType = REG_NONE;
|
|
|
|
//
|
|
// Format the data to be put into the registry
|
|
//
|
|
|
|
dwType = avt->dwType;
|
|
pbData = const_cast<BYTE*>(pbUserData + avt->cbOffset);
|
|
|
|
// If all we want to do is create the key, then we are already done.
|
|
if (REG_CREATE != dwType)
|
|
{
|
|
DWORD dwRealType = DwRealTypeFromPsuedoType(dwType);
|
|
DWORD cbReg = CbSizeOfDataToReg(dwType, pbData);
|
|
BYTE* pbReg = NULL;
|
|
|
|
AssertSz(cbReg, "We must have some data");
|
|
|
|
#ifndef STACK_ALLOC_DOESNT_WORK
|
|
pbReg = new BYTE[cbReg];
|
|
#else // !STACK_ALLOC_DOESNT_WORK
|
|
pbReg = reinterpret_cast<BYTE*>(PvAllocOnStack(cbReg));
|
|
#endif // !STACK_ALLOC_DOESNT_WORK
|
|
|
|
if(!pbReg)
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
break;
|
|
}
|
|
|
|
TranslateFromDataToReg(dwType, pbData, pbReg);
|
|
|
|
// Write the data to the registry.
|
|
hr = HrRegSetValueEx(
|
|
hkeyRoot,
|
|
avt->pszValueName,
|
|
dwRealType,
|
|
pbReg,
|
|
cbReg);
|
|
|
|
#ifndef STACK_ALLOC_DOESNT_WORK
|
|
// Must have this call before the break
|
|
delete [] pbReg;
|
|
#endif // STACK_ALLOC_DOESNT_WORK
|
|
}
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
break;
|
|
}
|
|
|
|
avt++;
|
|
}
|
|
|
|
TraceError("HrRegWriteValueTable", hr);
|
|
return hr;
|
|
}
|
|
|