You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
539 lines
13 KiB
539 lines
13 KiB
//+--------------------------------------------------------------------------
|
|
//
|
|
// Microsoft Windows
|
|
// Copyright (C) Microsoft Corporation, 1994 - 1998.
|
|
//
|
|
// File: safereg.cxx
|
|
//
|
|
// Contents: Implementation of Win32 registry API C++ wrapper
|
|
//
|
|
// Classes: CSafeReg
|
|
//
|
|
// History: 1-02-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
#include "precomp.hxx"
|
|
#include "safereg.hxx"
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::Close
|
|
//
|
|
// Synopsis: Close the key if it is open.
|
|
//
|
|
// History: 3-31-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
VOID
|
|
CSafeReg::Close()
|
|
{
|
|
// TRACE_METHOD(CSafeReg, Close);
|
|
|
|
if (_hKey)
|
|
{
|
|
LONG lr = RegCloseKey(_hKey);
|
|
ASSERT(lr == ERROR_SUCCESS);
|
|
_hKey = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::Create
|
|
//
|
|
// Synopsis: Creates a new key with write access.
|
|
//
|
|
// Arguments: [wszSubKey] - name of new key
|
|
// [pshkNew] - given new key; must not already have a key
|
|
//
|
|
// Returns: HRESULT
|
|
//
|
|
// Modifies: *[pshkNew]
|
|
//
|
|
// History: 3-31-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT
|
|
CSafeReg::Create(
|
|
LPCWSTR wszSubKey,
|
|
CSafeReg *pshkNew)
|
|
{
|
|
ASSERT(_hKey);
|
|
ASSERT(!pshkNew->_hKey);
|
|
|
|
HRESULT hr = S_OK;
|
|
LONG lr;
|
|
DWORD dwDisposition;
|
|
|
|
lr = RegCreateKeyEx(_hKey,
|
|
wszSubKey,
|
|
0,
|
|
NULL,
|
|
REG_OPTION_NON_VOLATILE,
|
|
KEY_WRITE,
|
|
NULL,
|
|
&pshkNew->_hKey,
|
|
&dwDisposition);
|
|
|
|
if (lr != ERROR_SUCCESS)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(lr);
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::Connect
|
|
//
|
|
// Synopsis: Open a connection to HKLM or HKEY_USERS on
|
|
// [ptszMachineName].
|
|
//
|
|
// Arguments: [ptszMachineName] - remote machine name.
|
|
// [hkeyPredefined] - HKEY_LOCAL_MACHINE or HKEY_USERS.
|
|
//
|
|
// Returns: HRESULT
|
|
//
|
|
// History: 2-07-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT
|
|
CSafeReg::Connect(
|
|
LPCWSTR pwszMachineName,
|
|
HKEY hkeyPredefined)
|
|
{
|
|
ASSERT(!_hKey);
|
|
ASSERT(pwszMachineName);
|
|
ASSERT(hkeyPredefined == HKEY_LOCAL_MACHINE ||
|
|
hkeyPredefined == HKEY_USERS);
|
|
|
|
HRESULT hr = S_OK;
|
|
LONG lr;
|
|
|
|
lr = RegConnectRegistry((LPWSTR)pwszMachineName,
|
|
hkeyPredefined,
|
|
&_hKey);
|
|
|
|
if (lr != ERROR_SUCCESS)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(lr);
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::Enum
|
|
//
|
|
// Synopsis: Wraps the RegEnumKeyEx API.
|
|
//
|
|
// Arguments: [ulSubKey] - 0-based subkey index
|
|
// [pwszSubkeyName] - buffer to hold subkey
|
|
// [cchSubkeyName] - size of buffer
|
|
//
|
|
// Returns: S_OK - success
|
|
// S_FALSE - no more items
|
|
// E_* - enum api failed
|
|
//
|
|
// Modifies: *[pwszSubkeyName]
|
|
//
|
|
// History: 2-10-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT
|
|
CSafeReg::Enum(
|
|
ULONG ulSubKey,
|
|
LPWSTR pwszSubkeyName,
|
|
ULONG cchSubkeyName)
|
|
{
|
|
ASSERT(_hKey);
|
|
|
|
HRESULT hr = S_OK;
|
|
LONG lr;
|
|
FILETIME ftLastWrite;
|
|
|
|
lr = RegEnumKeyEx(_hKey,
|
|
ulSubKey,
|
|
pwszSubkeyName,
|
|
&cchSubkeyName,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&ftLastWrite);
|
|
|
|
if (lr != ERROR_SUCCESS)
|
|
{
|
|
if (lr == ERROR_NO_MORE_ITEMS)
|
|
{
|
|
hr = S_FALSE;
|
|
}
|
|
else
|
|
{
|
|
hr = HRESULT_FROM_WIN32(lr);
|
|
}
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::Open
|
|
//
|
|
// Synopsis: Wraps the RegOpenKeyEx function.
|
|
//
|
|
// Arguments: [hKeyParent] - open parent key
|
|
// [lpszKeyName] - name of key to open
|
|
// [samDesired] - desired access level
|
|
//
|
|
// Returns: HRESULT representing result of RegOpenKeyEx.
|
|
//
|
|
// History: 1-13-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT
|
|
CSafeReg::Open(
|
|
HKEY hKeyParent,
|
|
LPCTSTR lpszKeyName,
|
|
REGSAM samDesired)
|
|
{
|
|
// TRACE_METHOD(CSafeReg, Open);
|
|
ASSERT(hKeyParent);
|
|
ASSERT(!_hKey);
|
|
|
|
HRESULT hr = S_OK;
|
|
HKEY hKey = NULL;
|
|
LONG lr = RegOpenKeyEx(hKeyParent, lpszKeyName, 0, samDesired, &hKey);
|
|
|
|
if (lr == ERROR_SUCCESS)
|
|
{
|
|
_hKey = hKey;
|
|
}
|
|
else
|
|
{
|
|
hr = HRESULT_FROM_WIN32(lr);
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::QueryBufSize
|
|
//
|
|
// Synopsis: Fill *[pcb] with the number bytes required to hold the
|
|
// value specified by [wszValueName].
|
|
//
|
|
// Arguments: [wszValueName] - name of registry value on this key
|
|
// [pcb] - filled with required buffer size, in bytes
|
|
//
|
|
// Returns: HRESULT
|
|
//
|
|
// Modifies: *[pcb]
|
|
//
|
|
// History: 2-24-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT
|
|
CSafeReg::QueryBufSize(
|
|
LPWSTR wszValueName,
|
|
ULONG *pcb)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
LONG lr;
|
|
ULONG ulType;
|
|
|
|
lr = RegQueryValueEx(_hKey, wszValueName, NULL, NULL, NULL, pcb);
|
|
|
|
if (lr != ERROR_SUCCESS)
|
|
{
|
|
hr = E_FAIL;
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::QueryDword
|
|
//
|
|
// Synopsis: Fill *[pdw] with the reg dword for value [wszValueName] on
|
|
// this key.
|
|
//
|
|
// Arguments: [wszValueName] - name of dword value
|
|
// [pdw] - filled with dword
|
|
//
|
|
// Returns: HRESULT from Registry call.
|
|
//
|
|
// Modifies: *[pdw]
|
|
//
|
|
// History: 1-15-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT
|
|
CSafeReg::QueryDword(
|
|
LPWSTR wszValueName,
|
|
LPDWORD pdw)
|
|
{
|
|
// TRACE_METHOD(CSafeReg, QueryDword);
|
|
ASSERT(_hKey);
|
|
|
|
HRESULT hr = S_OK;
|
|
ULONG cbData = sizeof(*pdw);
|
|
ULONG ulType;
|
|
|
|
LONG lr = RegQueryValueEx(_hKey,
|
|
wszValueName,
|
|
NULL,
|
|
&ulType,
|
|
(LPBYTE) pdw,
|
|
&cbData);
|
|
if (lr != ERROR_SUCCESS)
|
|
{
|
|
hr = E_FAIL;
|
|
}
|
|
else
|
|
{
|
|
ASSERT(REG_DWORD == ulType);
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::QueryPath
|
|
//
|
|
// Synopsis: Query this key for a value named [pwszValueName], which is
|
|
// expected to be of type REG_SZ or REG_EXPAND_SZ, and put
|
|
// the result in [pwszPathBuf].
|
|
//
|
|
// Arguments: [pwszValueName] - value to query for
|
|
// [pwszPathBuf] - buffer for string
|
|
// [cchPathBuf] - size, in wchars, of [pwszPathBuf]
|
|
// [fExpand] - TRUE=>expand a REG_EXPAND_SZ string,
|
|
// FALSE=>just copy it
|
|
//
|
|
// Returns: S_OK - [pwszPathBuf] valid
|
|
// E_* - [pwszPathBuf] is an empty string
|
|
//
|
|
// Modifies: *[pwszPathBuf]
|
|
//
|
|
// History: 2-10-1997 DavidMun Created
|
|
//
|
|
// Notes: Strings are expanded using environment variables for the
|
|
// current process, i.e., on the local machine, even if this
|
|
// contains a key to a remote machine's registry.
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT
|
|
CSafeReg::QueryPath(
|
|
LPWSTR pwszValueName,
|
|
LPWSTR pwszPathBuf,
|
|
ULONG cchPathBuf,
|
|
BOOL fExpand)
|
|
{
|
|
// TRACE_METHOD(CSafeReg, QueryPath);
|
|
ASSERT(_hKey);
|
|
|
|
HRESULT hr = S_OK;
|
|
DWORD dwType;
|
|
|
|
*pwszPathBuf = L'\0'; // init for failure case
|
|
|
|
LONG lr;
|
|
ULONG cbPath = cchPathBuf * sizeof(WCHAR);
|
|
lr = RegQueryValueEx(_hKey,
|
|
pwszValueName,
|
|
NULL,
|
|
&dwType,
|
|
(LPBYTE) pwszPathBuf,
|
|
&cbPath);
|
|
|
|
if (lr == ERROR_SUCCESS && dwType == REG_EXPAND_SZ)
|
|
{
|
|
if (fExpand)
|
|
{
|
|
LPWSTR pwszExpandedPath = new WCHAR[cchPathBuf];
|
|
|
|
if (pwszExpandedPath)
|
|
{
|
|
lr = ExpandEnvironmentStrings(pwszPathBuf,
|
|
pwszExpandedPath,
|
|
cchPathBuf);
|
|
|
|
if (!lr || (ULONG) lr > cchPathBuf)
|
|
{
|
|
if (!lr)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
}
|
|
else
|
|
{
|
|
hr = E_FAIL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
hr = StringCchCopy(pwszPathBuf, cchPathBuf, pwszExpandedPath);
|
|
ASSERT(SUCCEEDED(hr));
|
|
}
|
|
delete [] pwszExpandedPath;
|
|
}
|
|
else
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
}
|
|
}
|
|
}
|
|
else if (lr == ERROR_SUCCESS && dwType != REG_SZ)
|
|
{
|
|
hr = E_FAIL;
|
|
}
|
|
else
|
|
{
|
|
hr = HRESULT_FROM_WIN32(lr);
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
HRESULT
|
|
CSafeReg::QueryStr(
|
|
LPWSTR pwszValueName,
|
|
LPWSTR pwszBuf,
|
|
ULONG cchBuf)
|
|
{
|
|
// TRACE_METHOD(CSafeReg, QueryStr);
|
|
ASSERT(_hKey);
|
|
|
|
HRESULT hr = S_OK;
|
|
DWORD dwType;
|
|
|
|
*pwszBuf = L'\0'; // init for failure case
|
|
|
|
LONG lr;
|
|
ULONG cbBuf = cchBuf * sizeof(WCHAR);
|
|
|
|
lr = RegQueryValueEx(_hKey,
|
|
pwszValueName,
|
|
NULL,
|
|
&dwType,
|
|
(LPBYTE) pwszBuf,
|
|
&cbBuf);
|
|
|
|
if (lr == ERROR_SUCCESS &&
|
|
dwType != REG_SZ &&
|
|
dwType != REG_MULTI_SZ &&
|
|
dwType != REG_EXPAND_SZ)
|
|
{
|
|
hr = E_FAIL;
|
|
}
|
|
else if (lr != ERROR_SUCCESS)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(lr);
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
//+--------------------------------------------------------------------------
|
|
//
|
|
// Member: CSafeReg::SetDword
|
|
//
|
|
// Synopsis: Set a value with name [wszValueName] and type REG_DWORD on
|
|
// the currently open key.
|
|
//
|
|
// Arguments: [wszValueName] - name of value to create or set
|
|
// [dw] - dword to set
|
|
//
|
|
// Returns: Result of RegSetValueEx call.
|
|
//
|
|
// History: 1-20-1997 DavidMun Created
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
HRESULT
|
|
CSafeReg::SetDword(
|
|
LPWSTR wszValueName,
|
|
DWORD dw)
|
|
{
|
|
ASSERT(_hKey);
|
|
|
|
HRESULT hr = S_OK;
|
|
|
|
LONG lr = RegSetValueEx(_hKey,
|
|
wszValueName,
|
|
0,
|
|
REG_DWORD,
|
|
(PBYTE) &dw,
|
|
sizeof dw);
|
|
|
|
if (lr != ERROR_SUCCESS)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(lr);
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
|
|
|
|
|
|
HRESULT
|
|
CSafeReg::SetValue(
|
|
LPCWSTR wszValueName,
|
|
ULONG ulType,
|
|
const BYTE *pbValue,
|
|
ULONG cbValue)
|
|
{
|
|
ASSERT(_hKey);
|
|
|
|
HRESULT hr = S_OK;
|
|
LONG lr = RegSetValueEx(_hKey,
|
|
wszValueName,
|
|
0,
|
|
ulType,
|
|
pbValue,
|
|
cbValue);
|
|
|
|
if (lr != ERROR_SUCCESS)
|
|
{
|
|
hr = HRESULT_FROM_WIN32(lr);
|
|
}
|
|
return hr;
|
|
}
|
|
|