// **********************************************************************************
// Copyright (c) Microsoft Corporation
//
// Module Name:
// CONNECTWMI.cpp
//
// Abstract:
// Contains functions to connect to wmi.
//
// Author:
// Vasundhara .G
//
// Revision History:
// Vasundhara .G 26-sep-2k : Created It.
// *********************************************************************************
// Include files
#include "pch.h"
#include "getmac.h"
#include "resource.h"
// messages
#define INPUT_PASSWORD GetResString( IDS_STR_INPUT_PASSWORD )
// error constants
#define E_SERVER_NOTFOUND 0x800706ba
// function prototypes
BOOL IsValidUserEx( LPCWSTR pwszUser );
HRESULT GetSecurityArguments( IUnknown *pInterface,
DWORD& dwAuthorization,
DWORD& dwAuthentication );
HRESULT SetInterfaceSecurity( IUnknown *pInterface,
LPCWSTR pwszServer,
LPCWSTR pwszUser,
LPCWSTR pwszPassword,
COAUTHIDENTITY **ppAuthIdentity );
HRESULT WINAPI SetProxyBlanket( IUnknown *pInterface,
DWORD dwAuthnSvc,
DWORD dwAuthzSvc,
LPWSTR pwszPrincipal,
DWORD dwAuthLevel,
DWORD dwImpLevel,
RPC_AUTH_IDENTITY_HANDLE pAuthInfo,
DWORD dwCapabilities );
HRESULT WINAPI WbemAllocAuthIdentity( LPCWSTR pwszUser,
LPCWSTR pwszPassword,
LPCWSTR pwszDomain,
COAUTHIDENTITY **ppAuthIdent );
HRESULT RegQueryValueWMI( IWbemServices *pWbemServices,
LPCWSTR pwszMethod,
DWORD dwHDefKey,
LPCWSTR pwszSubKeyName,
LPCWSTR pwszValueName,
_variant_t &varValue );
HRESULT PropertyGet( IWbemClassObject *pWmiObject,
LPCWSTR pwszProperty,
_variant_t& varValue );
BOOL PropertyGet( IWbemClassObject *pWmiObject,
LPCWSTR pwszProperty,
CHString& strValue,
LPCWSTR pwszDefault = V_NOT_AVAILABLE );
BOOL PropertyGet( IWbemClassObject *pWmiObject,
LPCWSTR pwszProperty,
DWORD& dwValue,
DWORD dwDefault = 0 );
BOOL PropertyGet( IWbemClassObject *pWmiObject,
LPCWSTR pwszProperty,
ULONGLONG& ullValue );
BOOL PropertyGet( IWbemClassObject *pWmiObject,
LPCWSTR pwszProperty,
WBEMTime& wbemtime );
BOOL PropertyGet( IWbemClassObject *pWmiObject,
LPCWSTR pwszProperty,
SYSTEMTIME& systime );
BOOL PropertyGet( IWbemClassObject *pWmiObject,
LPCWSTR pwszProperty,
TARRAY arr );
// ***************************************************************************
// Routine Description:
// Validates the user name.
//
// Arguments:
// pwszUser [in] - Holds the user name to be validated.
//
// Return Value:
// returns TRUE if user name is a valid user else FALSE.
// ***************************************************************************
BOOL IsValidUserEx( LPCWSTR pwszUser )
{
// local variables
CHString strUser;
LONG lPos = 0;
try
{
// get user into local memory
strUser = pwszUser;
// user name should not be just '\'
if ( strUser.CompareNoCase( L"\\" ) == 0 )
{
return FALSE;
}
// user name should not contain invalid characters
if ( strUser.FindOneOf( L"/[]:|<>+=;,?*" ) != -1 )
{
return FALSE;
}
lPos = strUser.Find( L'\\' );
if ( lPos != -1 )
{
// '\' character exists in the user name
// strip off the user info upto first '\' character
// check for one more '\' in the remaining string
// if it exists, invalid user
strUser = strUser.Mid( lPos + 1 );
lPos = strUser.Find( L'\\' );
if ( lPos != -1 )
{
return FALSE;
}
}
}
catch( ... )
{
SetLastError( E_OUTOFMEMORY );
return FALSE;
}
// user name is valid
return TRUE;
}
// ***************************************************************************
// Routine Description:
// Checks whether the server name is a valid server name or not.
//
// Arguments:
// pwszServer [in] - Server name to be validated.
// bLocalSystem [in/out] - Set to TRUE if server specified is local system.
//
// Return Value:
// TRUE if server is valid else FALSE.
// ***************************************************************************
BOOL IsValidServerEx( LPCWSTR pwszServer,
BOOL &bLocalSystem )
{
// local variables
CHString strTemp;
if( pwszServer == NULL )
{
return FALSE;
}
bLocalSystem = FALSE;
// get a local copy
strTemp = pwszServer;
// remove the forward slashes (UNC) if exist in the begining of the server name
if ( IsUNCFormat( strTemp ) == TRUE )
{
strTemp = strTemp.Mid( 2 );
if ( strTemp.GetLength() == 0 )
{
return FALSE;
}
}
// now check if any '\' character appears in the server name. If so error
if ( strTemp.Find( L'\\' ) != -1 )
{
return FALSE;
}
// now check if server name is '.' only which represent local system in WMI
// else determine whether this is a local system or not
bLocalSystem = TRUE;
if ( strTemp.CompareNoCase( L"." ) != 0 )
{
// validate the server
if ( IsValidServer( strTemp ) == FALSE )
{
return FALSE;
}
// check whether this is a local system or not
bLocalSystem = IsLocalSystem( strTemp );
}
// valid server name
return TRUE;
}
// ***************************************************************************
// Routine Description:
// Connects to wmi.
//
// Arguments:
// pLocator [in] - Pointer to the IWbemLocator object.
// ppServices [out] - Pointer to IWbemServices object.
// pwszServer [in] - Holds the server name to connect to.
// pwszUser [in/out] - Holds the user name.
// pwszPassword [in/out] - Holds the password.
// ppAuthIdentity [in/out] - Pointer to authentication structure.
// bCheckWithNullPwd [in] - Specifies whether to connect through null password.
// pwszNamespace [in] - Specifies the namespace to connect to.
// phRes [in/out] - Holds the error value.
// pbLocalSystem [in/out] - Holds the boolean value to represent whether the server
// name is local or not.
// Return Value:
// TRUE if successfully connected, FALSE if not.
// ***************************************************************************
BOOL ConnectWmi( IWbemLocator *pLocator,
IWbemServices **ppServices,
LPCWSTR pwszServer,
LPCWSTR pwszUser,
LPCWSTR pwszPassword,
COAUTHIDENTITY **ppAuthIdentity,
BOOL bCheckWithNullPwd,
LPCWSTR pwszNamespace,
HRESULT *phRes,
BOOL *pbLocalSystem )
{
// local variables
HRESULT hRes = 0;
BOOL bResult = FALSE;
BOOL bLocalSystem = FALSE;
_bstr_t bstrServer;
_bstr_t bstrNamespace;
_bstr_t bstrUser;
_bstr_t bstrPassword;
if ( pbLocalSystem != NULL )
{
*pbLocalSystem = FALSE;
}
if ( phRes != NULL )
{
*phRes = NO_ERROR;
}
try
{
// clear the error
SetLastError( WBEM_S_NO_ERROR );
// assume that connection to WMI namespace is failed
bResult = FALSE;
// check whether locator object exists or not if not return FALSE
if ( pLocator == NULL )
{
if ( phRes != NULL )
{
*phRes = WBEM_E_INVALID_PARAMETER;
}
// return failure
return FALSE;
}
// validate the server name
// NOTE: The error being raised in custom define for '0x800706ba' value
// The message that will be displayed in "The RPC server is unavailable."
if ( IsValidServerEx( pwszServer, bLocalSystem ) == FALSE )
{
_com_issue_error( ERROR_BAD_NETPATH );
}
// validate the user name
if ( IsValidUserEx( pwszUser ) == FALSE )
{
_com_issue_error( ERROR_NO_SUCH_USER );
}
// prepare namespace
bstrNamespace = pwszNamespace; // name space
if ( pwszServer != NULL && bLocalSystem == FALSE )
{
// get the server name
bstrServer = pwszServer;
// prepare the namespace
// NOTE: check for the UNC naming format of the server and do
if ( IsUNCFormat( pwszServer ) == TRUE )
{
bstrNamespace = bstrServer + L"\\" + pwszNamespace;
}
else
{
bstrNamespace = L"\\\\" + bstrServer + L"\\" + pwszNamespace;
}
// user credentials
if ( pwszUser != NULL && lstrlen( pwszUser ) != 0 )
{
// copy the user name
bstrUser = pwszUser;
// if password is empty string and if we need to check with
// null password, then do not set the password and try
bstrPassword = pwszPassword;
if ( bCheckWithNullPwd == TRUE && bstrPassword.length() == 0 )
{
bstrPassword = (LPWSTR) NULL;
}
}
}
// release the existing services object ( to be in safer side )
SAFE_RELEASE( *ppServices );
// connect to the remote system's WMI
// there is a twist here ...
// do not trap the ConnectServer function failure into exception
// instead handle that action manually
// by default try the ConnectServer function as the information which we have
// in our hands at this point. If the ConnectServer is failed,
// check whether password variable has any contents are not ... if no contents
// check with "" (empty) password ... this might pass in this situation ..
// if this call is also failed ... nothing is there that we can do ... throw the exception
hRes = pLocator->ConnectServer( bstrNamespace,
bstrUser, bstrPassword, 0L, 0L, NULL, NULL, ppServices );
if ( FAILED( hRes ) )
{
//
// special case ...
// check whether password exists or not
// NOTE: do not check for 'WBEM_E_ACCESS_DENIED'
// this error code says that user with the current credentials is not
// having access permisions to the 'namespace'
if ( hRes == E_ACCESSDENIED )
{
// check if we tried to connect to the system using null password
// if so, then try connecting to the remote system with empty string
if ( bCheckWithNullPwd == TRUE &&
bstrUser.length() != 0 && bstrPassword.length() == 0 )
{
// now invoke with ...
hRes = pLocator->ConnectServer( bstrNamespace,
bstrUser, _bstr_t( L"" ), 0L, 0L, NULL, NULL, ppServices );
}
}
else if ( hRes == WBEM_E_LOCAL_CREDENTIALS )
{
// credentials were passed to the local system.
// So ignore the credentials and try to reconnect
bLocalSystem = TRUE;
bstrUser = (LPWSTR) NULL;
bstrPassword = (LPWSTR) NULL;
bstrNamespace = pwszNamespace; // name space
hRes = pLocator->ConnectServer( bstrNamespace,
NULL, NULL, 0L, 0L, NULL, NULL, ppServices );
// check the result
if ( SUCCEEDED( hRes ) && phRes != NULL )
{
// set the last error
*phRes = WBEM_E_LOCAL_CREDENTIALS;
}
}
// now check the result again .. if failed .. ummmm..
if ( FAILED( hRes ) )
{
_com_issue_error( hRes );
}
else
{
bstrPassword = L"";
}
}
// set the security at the interface level also
SAFE_EXECUTE( SetInterfaceSecurity( *ppServices,
pwszServer, bstrUser, bstrPassword, ppAuthIdentity ) );
// connection to WMI is successful
bResult = TRUE;
// save the hr value if needed by the caller
if ( phRes != NULL )
{
*phRes = WBEM_S_NO_ERROR;
}
}
catch( _com_error& e )
{
// save the error
WMISaveError( e );
// save the hr value if needed by the caller
if ( phRes != NULL )
{
*phRes = e.Error();
}
}
if ( pbLocalSystem != NULL )
{
*pbLocalSystem = bLocalSystem;
}
// return the result
return bResult;
}
// ***************************************************************************
// Routine Description:
// Connects to wmi.
//
// Arguments:
// pLocator [in] - Pointer to the IWbemLocator object.
// ppServices [out] - Pointer to IWbemServices object.
// strServer [in] - Holds the server name to connect to.
// strUserName [in/out] - Holds the user name.
// strPassword [in/out] - Holds the password.
// ppAuthIdentity [in/out] - Pointer to authentication structure.
// bNeedPassword [in] - Specifies whether to prompt for password.
// pwszNamespace [in] - Specifies the namespace to connect to.
// pbLocalSystem [in/out] - Holds the boolean value to represent whether the server
// name is local or not.
// Return Value:
// TRUE if successfully connected, FALSE if not.
// ***************************************************************************
BOOL ConnectWmiEx( IWbemLocator *pLocator,
IWbemServices **ppServices,
LPCWSTR strServer,
CHString &strUserName,
CHString &strPassword,
COAUTHIDENTITY **ppAuthIdentity,
BOOL bNeedPassword,
LPCWSTR pwszNamespace,
BOOL *pbLocalSystem )
{
// local variables
HRESULT hRes = 0;
DWORD dwSize = 0;
BOOL bResult = FALSE;
LPWSTR pwszPassword = NULL;
try
{
CHString strBuffer = NULL_STRING;
// clear the error .. if any
SetLastError( WBEM_S_NO_ERROR );
// sometime users want the utility to prompt for the password
// check what user wants the utility to do
if ( bNeedPassword == TRUE && strPassword.Compare( L"*" ) == 0 )
{
// user wants the utility to prompt for the password
// so skip this part and let the flow directly jump the password acceptance part
}
else
{
// try to establish connection to the remote system with the credentials supplied
if ( strUserName.GetLength() == 0 )
{
// user name is empty
// so, it is obvious that password will also be empty
// even if password is specified, we have to ignore that
bResult = ConnectWmi( pLocator, ppServices,
strServer, NULL, NULL, ppAuthIdentity,
FALSE, pwszNamespace, &hRes, pbLocalSystem );
}
else
{
// credentials were supplied
// but password might not be specified ... so check and act accordingly
LPCWSTR pwszTemp = NULL;
BOOL bCheckWithNull = TRUE;
if ( bNeedPassword == FALSE )
{
pwszTemp = strPassword;
bCheckWithNull = FALSE;
}
// ...
bResult = ConnectWmi( pLocator, ppServices, strServer, strUserName,
pwszTemp, ppAuthIdentity, bCheckWithNull, pwszNamespace, &hRes, pbLocalSystem );
}
// check the result ... if successful in establishing connection ... return
if ( bResult == TRUE )
{
SetLastError( hRes ); // set the error code
return TRUE;
}
// now check the kind of error occurred
switch( hRes )
{
case E_ACCESSDENIED:
break;
case WBEM_E_ACCESS_DENIED:
default:
// NOTE: do not check for 'WBEM_E_ACCESS_DENIED'
// this error code says that user with the current credentials is not
// having access permisions to the 'namespace'
WMISaveError( hRes );
return FALSE; // no use of accepting the password .. return failure
break;
}
// if failed in establishing connection to the remote terminal
// even if the password is specifed, then there is nothing to do ... simply return failure
if ( bNeedPassword == FALSE )
{
return( FALSE );
}
}
// check whether user name is specified or not
// if not, get the local system's current user name under whose credentials, the process
// is running
if ( strUserName.GetLength() == 0 )
{
// sub-local variables
LPWSTR pwszUserName = NULL;
// get the required buffer
pwszUserName = strUserName.GetBufferSetLength( MAX_STRING_LENGTH );
// get the user name
DWORD dwUserLength = MAX_STRING_LENGTH;
if ( GetUserNameEx( NameSamCompatible, pwszUserName, &dwUserLength ) == FALSE )
{
// error occured while trying to get the current user info
SaveLastError();
return( FALSE );
}
// release the extra buffer allocated
strUserName.ReleaseBuffer();
}
// get the required buffer
pwszPassword = strPassword.GetBufferSetLength( MAX_STRING_LENGTH );
// accept the password from the user
strBuffer.Format( INPUT_PASSWORD, strUserName );
WriteConsoleW( GetStdHandle( STD_ERROR_HANDLE ),
strBuffer, strBuffer.GetLength(), &dwSize, NULL );
GetPassword( pwszPassword, MAX_PASSWORD_LENGTH );
// release the buffer allocated for password
strPassword.ReleaseBuffer();
// now again try to establish the connection using the currently
// supplied credentials
bResult = ConnectWmi( pLocator, ppServices, strServer,
strUserName, strPassword, ppAuthIdentity, FALSE, pwszNamespace, &hRes, pbLocalSystem );
}
catch(CHeap_Exception)
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return FALSE;
}
catch( ... )
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return FALSE;
}
// return the success
return bResult;
}
// ***************************************************************************
// Routine Description:
// Gets the security arguments for an interface.
//
// Arguments:
// pInterface [in] - Pointer to interface stucture.
// dwAuthorization [in/out] - Holds Authorization value.
// dwAuthentication [in/out] - Holds the Authentication value.
//
// Return Value:
// Returns HRESULT value.
// ***************************************************************************
HRESULT GetSecurityArguments( IUnknown *pInterface,
DWORD& dwAuthorization,
DWORD& dwAuthentication )
{
// local variables
HRESULT hRes = 0;
DWORD dwAuthnSvc = 0, dwAuthzSvc = 0;
IClientSecurity *pClientSecurity = NULL;
if( pInterface == NULL )
{
return WBEM_E_INVALID_PARAMETER;
}
// try to get the client security services values if possible
hRes = pInterface->QueryInterface( IID_IClientSecurity, (void**) &pClientSecurity );
if ( SUCCEEDED( hRes ) )
{
// got the client security interface
// now try to get the security services values
hRes = pClientSecurity->QueryBlanket( pInterface,
&dwAuthnSvc, &dwAuthzSvc, NULL, NULL, NULL, NULL, NULL );
if ( SUCCEEDED( hRes ) )
{
// we've got the values from the interface
dwAuthentication = dwAuthnSvc;
dwAuthorization = dwAuthzSvc;
}
// release the client security interface
SAFE_RELEASE( pClientSecurity );
}
// return always success
return S_OK;
}
// ***************************************************************************
// Routine Description:
// Sets interface security.
//
// Arguments:
// pInterface [in] - Pointer to the interface to which security has to be set.
// pwszServer [in] - Holds the server name of the interface.
// pwszUser [in] - Holds the user name of the server.
// pwszPassword [in] - Hold the password of the user.
// ppAuthIdentity [in/out] - Pointer to authentication structure.
//
// Return Value:
// returns HRESULT value.
// ***************************************************************************
HRESULT SetInterfaceSecurity( IUnknown *pInterface,
LPCWSTR pwszServer,
LPCWSTR pwszUser,
LPCWSTR pwszPassword,
COAUTHIDENTITY **ppAuthIdentity )
{
// local variables
HRESULT hRes;
LPCWSTR pwszUserArg = NULL;
LPCWSTR pwszDomainArg = NULL;
DWORD dwAuthorization = RPC_C_AUTHZ_NONE;
DWORD dwAuthentication = RPC_C_AUTHN_WINNT;
try
{
CHString strUser;
CHString strDomain;
// check the interface
if ( pInterface == NULL )
{
return WBEM_E_INVALID_PARAMETER;
}
// check the authentity strcuture ... if authentity structure is already ready
// simply invoke the 2nd version of SetInterfaceSecurity
if ( *ppAuthIdentity != NULL )
{
return SetInterfaceSecurity( pInterface, *ppAuthIdentity );
}
// get the current security argument value
// GetSecurityArguments( pInterface, dwAuthorization, dwAuthentication );
// If we are doing trivial case, just pass in a null authenication structure
// for which the current logged in user's credentials will be considered
if ( pwszUser == NULL && pwszPassword == NULL )
{
// set the security
hRes = SetProxyBlanket( pInterface, dwAuthentication, dwAuthorization,
NULL, RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE );
// return the result
return hRes;
}
// parse and find out if the user name contains the domain name
// if contains, extract the domain value from it
LONG lPos = -1;
strDomain = L"";
strUser = pwszUser;
if ( ( lPos = strUser.Find( L'\\' ) ) != -1 )
{
// user name contains domain name ... domain\user format
strDomain = strUser.Left( lPos );
strUser = strUser.Mid( lPos + 1 );
}
// get the domain info if it exists only
if ( strDomain.GetLength() != 0 )
{
pwszDomainArg = strDomain;
}
// get the user info if it exists only
if ( strUser.GetLength() != 0 )
{
pwszUserArg = strUser;
}
// check if authenication info is available or not ...
// initialize the security authenication information ... UNICODE VERSION STRUCTURE
if ( ppAuthIdentity == NULL )
{
return WBEM_E_INVALID_PARAMETER;
}
else if ( *ppAuthIdentity == NULL )
{
hRes = WbemAllocAuthIdentity( pwszUserArg, pwszPassword, pwszDomainArg, ppAuthIdentity );
if ( hRes != S_OK )
{
return hRes;
}
}
// set the security information to the interface
hRes = SetProxyBlanket( pInterface, dwAuthentication, dwAuthorization, NULL,
RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, *ppAuthIdentity, EOAC_NONE );
// return the result
return hRes;
}
catch(CHeap_Exception)
{
return E_OUTOFMEMORY;
}
}
// ***************************************************************************
// Routine Description:
// Sets the interface security for the interface.
//
// Arguments:
// pInterface [in] - pointer to the interface.
// pAuthIdentity [in] - pointer to authentication structure.
//
// Return Value:
// returns HRESULT value.
// ***************************************************************************
HRESULT SetInterfaceSecurity( IUnknown *pInterface,
COAUTHIDENTITY *pAuthIdentity )
{
// local variables
HRESULT hRes;
LPWSTR pwszDomain = NULL;
DWORD dwAuthorization = RPC_C_AUTHZ_NONE;
DWORD dwAuthentication = RPC_C_AUTHN_WINNT;
// check the interface
if ( pInterface == NULL )
{
return WBEM_E_INVALID_PARAMETER;
}
// get the current security argument value
// GetSecurityArguments( pInterface, dwAuthorization, dwAuthentication );
// set the security information to the interface
hRes = SetProxyBlanket( pInterface, dwAuthentication, dwAuthorization, NULL,
RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, pAuthIdentity, EOAC_NONE );
// return the result
return hRes;
}
// ***************************************************************************
// Routine Description:
// Sets proxy blanket for the interface.
//
// Arguments:
// pInterface [in] - pointer to the inteface.
// dwAuthnsvc [in] - Authentication service to use.
// dwAuthzSvc [in] - Authorization service to use.
// pwszPricipal [in] - Server principal name to use with the authentication service.
// dwAuthLevel [in] - Authentication level to use.
// dwImpLevel [in] - Impersonation level to use.
// pAuthInfo [in] - Identity of the client.
// dwCapabilities [in] - Capability flags.
//
// Return Value:
// Return HRESULT value.
//
// ***************************************************************************
HRESULT WINAPI SetProxyBlanket( IUnknown *pInterface,
DWORD dwAuthnSvc,
DWORD dwAuthzSvc,
LPWSTR pwszPrincipal,
DWORD dwAuthLevel,
DWORD dwImpLevel,
RPC_AUTH_IDENTITY_HANDLE pAuthInfo,
DWORD dwCapabilities )
{
// local variables
HRESULT hRes;
IUnknown *pUnknown = NULL;
IClientSecurity *pClientSecurity = NULL;
if( pInterface == NULL )
{
return WBEM_E_INVALID_PARAMETER;
}
// get the IUnknown interface ... to check whether this is a valid interface or not
hRes = pInterface->QueryInterface( IID_IUnknown, (void **) &pUnknown );
if ( hRes != S_OK )
{
return hRes;
}
// now get the client security interface
hRes = pInterface->QueryInterface( IID_IClientSecurity, (void **) &pClientSecurity );
if ( hRes != S_OK )
{
SAFE_RELEASE( pUnknown );
return hRes;
}
//
// Can't set pAuthInfo if cloaking requested, as cloaking implies
// that the current proxy identity in the impersonated thread (rather
// than the credentials supplied explicitly by the RPC_AUTH_IDENTITY_HANDLE)
// is to be used.
// See MSDN info on CoSetProxyBlanket for more details.
//
if ( dwCapabilities & (EOAC_STATIC_CLOAKING | EOAC_DYNAMIC_CLOAKING) )
{
pAuthInfo = NULL;
}
// now set the security
hRes = pClientSecurity->SetBlanket( pInterface, dwAuthnSvc, dwAuthzSvc, pwszPrincipal,
dwAuthLevel, dwImpLevel, pAuthInfo, dwCapabilities );
// release the security interface
SAFE_RELEASE( pClientSecurity );
// we should check the auth identity structure. if exists .. set for IUnknown also
if ( pAuthInfo != NULL )
{
hRes = pUnknown->QueryInterface( IID_IClientSecurity, (void **) &pClientSecurity );
if ( hRes == S_OK )
{
// set security authentication
hRes = pClientSecurity->SetBlanket(
pUnknown, dwAuthnSvc, dwAuthzSvc, pwszPrincipal,
dwAuthLevel, dwImpLevel, pAuthInfo, dwCapabilities );
// release
SAFE_RELEASE( pClientSecurity );
}
else if ( hRes == E_NOINTERFACE )
{
hRes = S_OK; // ignore no interface errors
}
}
// release the IUnknown
SAFE_RELEASE( pUnknown );
// return the result
return hRes;
}
// ***************************************************************************
// Routine Description:
// Allocate memory for authentication variables.
//
// Arguments:
// pwszUser [in/out] - User name.
// pwszPassword [in/out] - Password.
// pwszDomain [in/out] - Domain name.
// ppAuthIdent [in/out] - Poointer to authentication structure.
//
// Return Value:
// Returns HRESULT value.
// ***************************************************************************
HRESULT WINAPI WbemAllocAuthIdentity( LPCWSTR pwszUser,
LPCWSTR pwszPassword,
LPCWSTR pwszDomain,
COAUTHIDENTITY **ppAuthIdent )
{
// local variables
COAUTHIDENTITY *pAuthIdent = NULL;
// validate the input parameter
if ( ppAuthIdent == NULL )
{
return WBEM_E_INVALID_PARAMETER;
}
// allocation thru COM API
pAuthIdent = ( COAUTHIDENTITY* ) CoTaskMemAlloc( sizeof( COAUTHIDENTITY ) );
if ( NULL == pAuthIdent )
{
return WBEM_E_OUT_OF_MEMORY;
}
// init with 0's
ZeroMemory( ( void* ) pAuthIdent, sizeof( COAUTHIDENTITY ) );
//
// Allocate needed memory and copy in data. Cleanup if anything goes wrong
// user
if ( pwszUser != NULL )
{
// allocate memory for user
LONG lLength = wcslen( pwszUser );
pAuthIdent->User = ( LPWSTR ) CoTaskMemAlloc( (lLength + 1) * sizeof( WCHAR ) );
if ( pAuthIdent->User == NULL )
{
WbemFreeAuthIdentity( &pAuthIdent );
return WBEM_E_OUT_OF_MEMORY;
}
// set the length and do copy contents
pAuthIdent->UserLength = lLength;
wcscpy( pAuthIdent->User, pwszUser );
}
// domain
if ( pwszDomain != NULL )
{
// allocate memory for domain
LONG lLength = wcslen( pwszDomain );
pAuthIdent->Domain = ( LPWSTR ) CoTaskMemAlloc( (lLength + 1) * sizeof( WCHAR ) );
if ( pAuthIdent->Domain == NULL )
{
WbemFreeAuthIdentity( &pAuthIdent );
return WBEM_E_OUT_OF_MEMORY;
}
// set the length and do copy contents
pAuthIdent->DomainLength = lLength;
wcscpy( pAuthIdent->Domain, pwszDomain );
}
// passsord
if ( pwszPassword != NULL )
{
// allocate memory for passsord
LONG lLength = wcslen( pwszPassword );
pAuthIdent->Password = ( LPWSTR ) CoTaskMemAlloc( (lLength + 1) * sizeof( WCHAR ) );
if ( pAuthIdent->Password == NULL )
{
WbemFreeAuthIdentity( &pAuthIdent );
return WBEM_E_OUT_OF_MEMORY;
}
// set the length and do copy contents
pAuthIdent->PasswordLength = lLength;
wcscpy( pAuthIdent->Password, pwszPassword );
}
// type of the structure
pAuthIdent->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
// final set the address to out parameter
*ppAuthIdent = pAuthIdent;
// return result
return S_OK;
}
// ***************************************************************************
// Routine Description:
// Frees the memory of authentication stucture variable.
//
// Arguments:
// ppAuthIdentity [in] - Pointer to authentication structure.
//
// Return Value:
// none.
// ***************************************************************************
VOID WINAPI WbemFreeAuthIdentity( COAUTHIDENTITY** ppAuthIdentity )
{
// make sure we have a pointer, then walk the structure members and cleanup.
if ( *ppAuthIdentity != NULL )
{
// free the memory allocated for user
if ( (*ppAuthIdentity)->User != NULL )
{
CoTaskMemFree( (*ppAuthIdentity)->User );
}
// free the memory allocated for password
if ( (*ppAuthIdentity)->Password != NULL )
{
CoTaskMemFree( (*ppAuthIdentity)->Password );
}
// free the memory allocated for domain
if ( (*ppAuthIdentity)->Domain != NULL )
{
CoTaskMemFree( (*ppAuthIdentity)->Domain );
}
// final the structure
CoTaskMemFree( *ppAuthIdentity );
}
// set to NULL
*ppAuthIdentity = NULL;
}
// ***************************************************************************
// Routine Description:
// Gets WMI error description.
//
// Arguments:
// hResError [in] - Contain error value.
//
// Return Value:
// none.
// ***************************************************************************
VOID WMISaveError( HRESULT hResError )
{
// local variables
HRESULT hRes;
IWbemStatusCodeText *pWbemStatus = NULL;
CHString strBuffer = NULL_STRING;
// if the error is win32 based, choose FormatMessage to get the message
switch( hResError )
{
case E_ACCESSDENIED: // Message: "Access Denied"
case ERROR_NO_SUCH_USER: // Message: "The specified user does not exist."
{
// change the error message to "Logon failure: unknown user name or bad password."
if ( hResError == E_ACCESSDENIED )
{
hResError = ERROR_LOGON_FAILURE;
}
// ...
SetLastError( hResError );
SaveLastError();
return;
}
}
try
{
// get the pointer to buffer
LPWSTR pwszBuffer = NULL;
pwszBuffer = strBuffer.GetBufferSetLength( MAX_STRING_LENGTH );
// get the wbem specific status code text
hRes = CoCreateInstance( CLSID_WbemStatusCodeText,
NULL, CLSCTX_INPROC_SERVER, IID_IWbemStatusCodeText, ( LPVOID* ) &pWbemStatus );
// check whether we got the interface or not
if ( SUCCEEDED( hRes ) )
{
// get the error message
BSTR bstr = NULL;
hRes = pWbemStatus->GetErrorCodeText( hResError, 0, 0, &bstr );
if ( SUCCEEDED( hRes ) )
{
// get the error message in proper format
GetCompatibleStringFromUnicode( bstr, pwszBuffer, MAX_STRING_LENGTH );
//
// supress all the new-line characters and add '.' at the end ( if not exists )
LPWSTR pwszTemp = NULL;
pwszTemp = wcstok( pwszBuffer, L"\r\n" );
if( pwszTemp == NULL )
{
_com_issue_error( WBEM_E_INVALID_PARAMETER );
}
if ( *( pwszTemp + lstrlenW( pwszTemp ) - 1 ) != L'.' )
{
lstrcatW( pwszTemp, L"." );
}
// free the BSTR
SysFreeString( bstr );
bstr = NULL;
// now release status code interface
SAFE_RELEASE( pWbemStatus );
}
else
{
// failed to get the error message ... get the com specific error message
_com_issue_error( hResError );
}
}
else
{
// failed to get the error message ... get the com specific error message
_com_issue_error( hResError );
}
// release the buffer
strBuffer.ReleaseBuffer();
// set the reason
strBuffer += L"\n";
SetReason( strBuffer );
}
catch( _com_error& e )
{
try
{
// get the error message
strBuffer.ReleaseBuffer();
if ( e.ErrorMessage() != NULL )
{
strBuffer = e.ErrorMessage();
}
}
catch( ... )
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
}
}
catch(CHeap_Exception)
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return;
}
catch( ... )
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return;
}
}
// ***************************************************************************
// Routine Description:
//
// Arguments:
//
// Return Value:
//
// ***************************************************************************
DWORD GetTargetVersionEx( IWbemServices* pWbemServices, COAUTHIDENTITY* pAuthIdentity )
{
// local variables
HRESULT hRes;
LONG lPos = 0;
DWORD dwMajor = 0;
DWORD dwMinor = 0;
DWORD dwVersion = 0;
ULONG ulReturned = 0;
IWbemClassObject* pWbemObject = NULL;
IEnumWbemClassObject* pWbemInstances = NULL;
// check the input value
if ( pWbemServices == NULL )
return 0;
try
{
CHString strVersion;
// get the OS information
SAFE_EXECUTE( pWbemServices->CreateInstanceEnum(
_bstr_t( CLASS_CIMV2_Win32_OperatingSystem ), 0, NULL, &pWbemInstances ) );
// set the security on the enumerated object
SAFE_EXECUTE( SetInterfaceSecurity( pWbemInstances, pAuthIdentity ) );
// get the enumerated objects information
// NOTE: This needs to be traversed only one time.
SAFE_EXECUTE( pWbemInstances->Next( WBEM_INFINITE, 1, &pWbemObject, &ulReturned ) );
// to be on safer side ... check the count of objects returned
if ( ulReturned == 0 )
{
// release the interfaces
SAFE_RELEASE( pWbemObject );
SAFE_RELEASE( pWbemInstances );
return 0;
}
// now get the os version value
if ( PropertyGet( pWbemObject, L"Version", strVersion ) == FALSE )
{
// release the interfaces
SAFE_RELEASE( pWbemObject );
SAFE_RELEASE( pWbemInstances );
return 0;
}
// release the interfaces .. we dont need them furthur
SAFE_RELEASE( pWbemObject );
SAFE_RELEASE( pWbemInstances );
//
// now determine the os version
dwMajor = dwMinor = 0;
// get the major version
lPos = strVersion.Find( L'.' );
if ( lPos == -1 )
{
// the version string itself is version ... THIS WILL NEVER HAPPEN
dwMajor = AsLong( strVersion, 10 );
}
else
{
// major version
dwMajor = AsLong( strVersion.Mid( 0, lPos ), 10 );
// get the minor version
strVersion = strVersion.Mid( lPos + 1 );
lPos = strVersion.Find( L'.' );
if ( lPos == -1 )
dwMinor = AsLong( strVersion, 10 );
else
dwMinor = AsLong( strVersion.Mid( 0, lPos ), 10 );
}
// mix the version info
dwVersion = dwMajor * 1000 + dwMinor;
}
catch( _com_error& e )
{
WMISaveError( e );
return 0;
}
catch(CHeap_Exception)
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return 0;
}
// return
return dwVersion;
}
// ***************************************************************************
// Routine Description:
// Gets the value of the property from the WMI class object
//
// Arguments:
// [ in ] pWmiObject : pointer to the WBEM class object
// [ in ] szProperty : property name
// [ out ] varValue : value of the property
//
// Return Value:
// HRESULT - result of the operation
//
// ***************************************************************************
HRESULT PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, VARIANT* pvarValue )
{
// local variables
HRESULT hr;
// check with object and property passed to the function are valid or not
// if not, return failure
if ( pWmiObject == NULL || pwszProperty == NULL || pvarValue == NULL )
return WBEM_E_INVALID_PARAMETER;
try
{
// initialize the variant and then get the value of the specified property
hr = pWmiObject->Get( _bstr_t( pwszProperty ), 0, pvarValue, NULL, NULL );
if ( FAILED( hr ) )
{
// clear the variant variable
VariantClear( pvarValue );
// failed to get the value for the property
return hr;
}
}
catch( _com_error& e )
{
WMISaveError( e );
return e.Error();
}
// inform success
return S_OK;
}
// ***************************************************************************
// Routine Description:
// Gets the value of the property from the WMI class object
//
// Arguments:
// [ in ] pWmiObject : pointer to the WBEM class object
// [ in ] szProperty : property name
// [ out ] varValue : value of the property
//
// Return Value:
// HRESULT - result of the operation
//
// ***************************************************************************
HRESULT PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, _variant_t& varValue )
{
// local variables
HRESULT hr;
VARIANT vtValue;
// check with object and property passed to the function are valid or not
// if not, return failure
if ( pWmiObject == NULL || pwszProperty == NULL )
return WBEM_E_INVALID_PARAMETER;
try
{
// initialize the variant and then get the value of the specified property
VariantInit( &vtValue );
hr = pWmiObject->Get( _bstr_t( pwszProperty ), 0, &vtValue, NULL, NULL );
if ( FAILED( hr ) )
{
// clear the variant variable
VariantClear( &vtValue );
// failed to get the value for the property
return hr;
}
// set the value
varValue = vtValue;
// clear the variant variable
VariantClear( &vtValue );
}
catch( _com_error& e )
{
WMISaveError( e );
return e.Error();
}
// inform success
return S_OK;
}
// ***************************************************************************
// Routine Description:
// Gets the value of the property from the WMI class object in string format
//
// Arguments:
//
// Return Value:
// TRUE - if operation is successfull, otherwise FALSE
//
// ***************************************************************************
BOOL PropertyGet( IWbemClassObject* pWmiObject,
LPCWSTR pwszProperty, CHString& strValue, LPCWSTR pwszDefault )
{
// local variables
HRESULT hr;
_variant_t var;
// first copy the default value
strValue = pwszDefault;
// check with object and property passed to the function are valid or not
// if not, return failure
if ( pWmiObject == NULL || pwszProperty == NULL )
return FALSE;
// get the property value
hr = PropertyGet( pWmiObject, pwszProperty, var );
if ( FAILED( hr ) )
return FALSE;
try
{
// get the value
if ( var.vt != VT_NULL && var.vt != VT_EMPTY )
strValue = (LPCWSTR) _bstr_t( var );
}
catch( ... )
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return FALSE;
}
// return
return TRUE;
}
// ***************************************************************************
// Routine Description:
// Gets the value of the property from the WMI class object in string format
//
// Arguments:
// [ in ] pWmiObject : pointer to the WBEM class object
// [ in ] pwszProperty : property name
// [ out ] pdwValue : value of the property
// [ in ] dwDefault : default in case failed in getting property value
//
// Return Value:
// TRUE - if operation is successfull, otherwise FALSE
//
// ***************************************************************************
BOOL PropertyGet( IWbemClassObject* pWmiObject,
LPCWSTR pwszProperty, DWORD& dwValue, DWORD dwDefault )
{
// local variables
HRESULT hr;
_variant_t var;
// first set the defaul value
dwValue = dwDefault;
// check with object and property passed to the function are valid or not
// if not, return failure
if ( pWmiObject == NULL || pwszProperty == NULL )
return FALSE;
// get the value of the property
hr = PropertyGet( pWmiObject, pwszProperty, var );
if ( FAILED( hr ) )
return FALSE;
// get the process id from the variant
if ( var.vt != VT_NULL && var.vt != VT_EMPTY )
dwValue = (LONG) var;
// return
return TRUE;
}
// ***************************************************************************
// Routine Description:
// Gets the value of the property from the WMI class object in string format
//
// Arguments:
//
// Return Value:
// TRUE - if operation is successfull, otherwise FALSE
//
// ***************************************************************************
BOOL PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, ULONGLONG& ullValue )
{
try
{
// local variables
CHString str;
// first set the default value
ullValue = 1;
// check with object and property passed to the function are valid or not
// if not, return failure
if ( pWmiObject == NULL || pwszProperty == NULL )
return FALSE;
// get the value of the property
if ( PropertyGet( pWmiObject, pwszProperty, str, _T( "0" ) ) == FALSE )
return FALSE;
// get the 64-bit value
ullValue = _wtoi64( str );
}
catch(CHeap_Exception)
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return FALSE;
}
// return
return TRUE;
}
// ***************************************************************************
// Routine Description:
// Gets the value of the property from the WMI class object in string format
//
// Arguments:
//
// Return Value:
// TRUE - if operation is successfull, otherwise FALSE
//
// ***************************************************************************
BOOL PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, WBEMTime& wbemtime )
{
try
{
// local variables
CHString str;
// Clear method sets the time in the WBEMTime object to an invalid time.
wbemtime.Clear();
// check with object and property passed to the function are valid or not
// if not, return failure
if ( pWmiObject == NULL || pwszProperty == NULL )
return FALSE;
// get the value of the property
if ( PropertyGet( pWmiObject, pwszProperty, str, _T( "0" ) ) == FALSE )
return FALSE;
// convert into the time value
wbemtime = _bstr_t( str );
}
catch( _com_error& e )
{
WMISaveError( e );
return FALSE;
}
catch(CHeap_Exception)
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return FALSE;
}
// return
return TRUE;
}
// ***************************************************************************
// Routine Description:
// Gets the value of the property from the WMI class object in string format
//
// Arguments:
//
// Return Value:
// TRUE - if operation is successfull, otherwise FALSE
//
// ***************************************************************************
BOOL PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, SYSTEMTIME& systime )
{
try
{
// local variables
CHString strTime;
// check with object and property passed to the function are valid or not
// if not, return failure
if ( pWmiObject == NULL || pwszProperty == NULL )
return FALSE;
// get the value of the property
// 16010101000000.000000+000 is the default time
if ( PropertyGet( pWmiObject, pwszProperty, strTime, _T( "16010101000000.000000+000" ) ) == FALSE )
return FALSE;
// prepare the systemtime structure
// yyyymmddHHMMSS.mmmmmmsUUU
systime.wYear = (WORD) AsLong( strTime.Left( 4 ), 10 );
systime.wMonth = (WORD) AsLong( strTime.Mid( 4, 2 ), 10 );
systime.wDayOfWeek = 0;
systime.wDay = (WORD) AsLong( strTime.Mid( 6, 2 ), 10 );
systime.wHour = (WORD) AsLong( strTime.Mid( 8, 2 ), 10 );
systime.wMinute = (WORD) AsLong( strTime.Mid( 10, 2 ), 10 );
systime.wSecond = (WORD) AsLong( strTime.Mid( 12, 2 ), 10 );
systime.wMilliseconds = (WORD) AsLong( strTime.Mid( 15, 6 ), 10 );
}
catch(CHeap_Exception)
{
SetLastError( E_OUTOFMEMORY );
SaveLastError();
return FALSE;
}
// return
return TRUE;
}
// ***************************************************************************
// Routine Description:
// Gets the value of the property from the WMI class object in string format
//
// Arguments:
//
// Return Value:
// TRUE - if operation is successfull, otherwise FALSE
//
// ***************************************************************************
BOOL PropertyGet( IWbemClassObject* pWmiObject, LPCWSTR pwszProperty, TARRAY arr )
{
// local variables
HRESULT hr;
VARIANT vtValue;
LONG lIndex = 0;
LONG lLBound = 0;
LONG lUBound = 0;
VARTYPE vartype;
SAFEARRAY* pSafeArray = NULL;
// check the inputs
if ( pWmiObject == NULL || pwszProperty == NULL || arr == NULL )
return FALSE;
// initialize the variant
VariantInit( &vtValue );
// now get the property value
hr = PropertyGet( pWmiObject, pwszProperty, &vtValue );
if ( FAILED( hr ) )
return FALSE;
if ( V_VT( &vtValue ) == VT_NULL )
return TRUE;
// confirm that the propety value is of array type .. if not return
if ( ( V_VT( &vtValue ) & VT_ARRAY ) == 0 )
return FALSE;
// get the safearray value
pSafeArray = V_ARRAY( &vtValue );
// get the bounds of the array
hr = SafeArrayGetLBound( pSafeArray, 1, &lLBound );
if ( FAILED( hr ) )
return FALSE;
hr = SafeArrayGetUBound( pSafeArray, 1, &lUBound );
if ( FAILED( hr ) )
return FALSE;
// get the type of the elements in the safe array
vartype = V_VT( &vtValue ) & ~VT_ARRAY;
try
{
// traverse thru the values in the safe array and update into dynamic array
for( lIndex = lLBound; lIndex <= lUBound; lIndex++ )
{
// sub-local variables
VARIANT var;
CHString strValue;
// get the value
V_VT( &var ) = vartype;
SafeArrayGetElement( pSafeArray, &lIndex, &V_UI1( &var ) );
// add the information to the dynamic array
switch( vartype )
{
case VT_BSTR:
strValue = V_BSTR( &var );
DynArrayAppendString( arr, strValue, 0 );
break;
}
}
}
catch( ... )
{
// clear the variant
VariantClear( &vtValue );
return FALSE; // failure
}
// clear the variant
VariantClear( &vtValue );
// return
return TRUE;
}