Leaked source code of windows server 2003
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236 lines
5.5 KiB

/*++
Copyright (c) 1999-2000 Microsoft Corporation
Module Name:
salem.cpp
Abstract:
All Salem related function, this library is shared by termsrv.dll
and salem sessmgr.exe
Author:
--*/
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <ntlsa.h>
#include <ntsam.h>
#include <stdio.h>
#include <string.h>
#include <windows.h>
#include <lm.h>
#include <winsta.h>
#include "regapi.h"
extern "C" {
BOOLEAN
RegIsMachinePolicyAllowHelp();
BOOLEAN
RegIsMachineInHelpMode();
}
DWORD
GetPolicyAllowGetHelpSetting(
HKEY hKey,
LPCTSTR pszKeyName,
LPCTSTR pszValueName,
IN DWORD* value
)
/*++
Routine Description:
Routine to query policy registry value.
Parameters:
hKey : Currently open registry key.
pszKeyName : Pointer to a null-terminated string containing
the name of the subkey to open.
pszValueName : Pointer to a null-terminated string containing
the name of the value to query
value : Pointer to DWORD to receive GetHelp policy setting.
Returns:
ERROR_SUCCESS or error code from RegOpenKeyEx().
--*/
{
DWORD dwStatus;
HKEY hPolicyKey = NULL;
DWORD dwType;
DWORD cbData;
//
// Open registry key for system policy
//
dwStatus = RegOpenKeyEx(
hKey,
pszKeyName,
0,
KEY_READ,
&hPolicyKey
);
if( ERROR_SUCCESS == dwStatus )
{
// query value
cbData = 0;
dwType = 0;
dwStatus = RegQueryValueEx(
hPolicyKey,
pszValueName,
NULL,
&dwType,
NULL,
&cbData
);
if( ERROR_SUCCESS == dwStatus )
{
if( REG_DWORD == dwType )
{
cbData = sizeof(DWORD);
// our registry value is REG_DWORD, if different type,
// assume not exist.
dwStatus = RegQueryValueEx(
hPolicyKey,
pszValueName,
NULL,
&dwType,
(LPBYTE)value,
&cbData
);
ASSERT( ERROR_SUCCESS == dwStatus );
}
else
{
// bad registry key type, assume
// key does not exist.
dwStatus = ERROR_FILE_NOT_FOUND;
}
}
RegCloseKey( hPolicyKey );
}
return dwStatus;
}
BOOLEAN
RegIsMachinePolicyAllowHelp()
/*++
Routine Description:
Check if 'GetHelp' is enabled on local machine, routine first query
system policy registry key, if policy is not set, then read salem
specific registry. Default to 'enable' is registry value does not
exist.
Parameters:
None.
Returns:
TRUE/FALSE
--*/
{
DWORD dwStatus;
DWORD dwValue = 0;
//
// Open system policy registry key, if registry key/value
// does not exist, assume it is enable and continue on
// to local policy key.
//
dwStatus = GetPolicyAllowGetHelpSetting(
HKEY_LOCAL_MACHINE,
TS_POLICY_SUB_TREE,
POLICY_TS_REMDSK_ALLOWTOGETHELP,
&dwValue
);
if( ERROR_SUCCESS != dwStatus )
{
//
// For local machine policy, our default value is
// Not Allow to get help if registry key is not there
//
dwStatus = GetPolicyAllowGetHelpSetting(
HKEY_LOCAL_MACHINE,
REG_CONTROL_GETHELP,
POLICY_TS_REMDSK_ALLOWTOGETHELP,
&dwValue
);
if( ERROR_SUCCESS != dwStatus )
{
//
// neither group policy nor machine policy has
// set any value, default to disable.
//
dwValue = 0;
}
}
return (dwValue == 1);
}
BOOLEAN
RegIsMachineInHelpMode()
/*++
Routine Description:
Check if 'InHelpMode' is set on local machine.
Default to FALSE if registry value does not exist.
Parameters:
None.
Returns:
TRUE/FALSE
--*/
{
DWORD dwStatus;
DWORD dwValue = 0;
//
// The default value is NotInHelp if registry key is not there
//
dwStatus = GetPolicyAllowGetHelpSetting(
HKEY_LOCAL_MACHINE,
REG_CONTROL_TSERVER,
REG_MACHINE_IN_HELP_MODE,
&dwValue
);
if( ERROR_SUCCESS != dwStatus )
{
//
// The value is not set, default to disable.
//
dwValue = 0;
}
return (dwValue == 1);
}