963 lines
25 KiB
C++
963 lines
25 KiB
C++
/*++
|
|
|
|
Copyright (c) 1999-2000 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
RDPRemoteDesktopServerHost
|
|
|
|
Abstract:
|
|
|
|
This module contains the CRemoteDesktopServerHost implementation
|
|
of RDS session objects.
|
|
|
|
It manages a collection of open ISAFRemoteDesktopSession objects.
|
|
New RDS session objects instances are created using the CreateRemoteDesktopSession
|
|
method. Existing RDS session objects are opened using the OpenRemoteDesktopSession
|
|
method. RDS session objects are closed using the CloseRemoteDesktopSession method.
|
|
|
|
When an RDS object is opened or created, the CRemoteDesktopServerHost
|
|
object adds a reference of its own to the object so that the object will
|
|
stay around, even if the opening application exits. This reference
|
|
is retracted when the application calls the CloseRemoteDesktopSession method.
|
|
|
|
In addition to the reference count the CRemoteDesktopServerHost adds to
|
|
the RDS session object, a reference count is also added to itself so that
|
|
the associated exe continues to run while RDS session objects are active.
|
|
|
|
Author:
|
|
|
|
Tad Brockway 02/00
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include <RemoteDesktop.h>
|
|
|
|
#include "stdafx.h"
|
|
|
|
#ifdef TRC_FILE
|
|
#undef TRC_FILE
|
|
#endif
|
|
|
|
#define TRC_FILE "_svrhst"
|
|
#include "RemoteDesktopUtils.h"
|
|
#include "parseaddr.h"
|
|
#include "RDSHost.h"
|
|
#include "RemoteDesktopServerHost.h"
|
|
#include "TSRDPRemoteDesktopSession.h"
|
|
#include "rderror.h"
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////
|
|
//
|
|
// CRemoteDesktopServerHost Methods
|
|
//
|
|
|
|
HRESULT
|
|
CRemoteDesktopServerHost::FinalConstruct()
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Arguments:
|
|
|
|
Return Value:
|
|
|
|
S_OK on success. Otherwise, an error code is returned.
|
|
|
|
--*/
|
|
{
|
|
DC_BEGIN_FN("CRemoteDesktopServerHost::FinalConstruct");
|
|
|
|
HRESULT hr = S_OK;
|
|
|
|
CLEANUPANDEXIT:
|
|
|
|
DC_END_FN();
|
|
|
|
return hr;
|
|
}
|
|
|
|
CRemoteDesktopServerHost::~CRemoteDesktopServerHost()
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Destructor
|
|
|
|
Arguments:
|
|
|
|
Return Value:
|
|
|
|
S_OK on success. Otherwise, an error code is returned.
|
|
|
|
--*/
|
|
{
|
|
DC_BEGIN_FN("CRemoteDesktopServerHost::~CRemoteDesktopServerHost");
|
|
|
|
//
|
|
// We shouldn't be shutting down, unless our session map is empty.
|
|
//
|
|
ASSERT(m_SessionMap.empty());
|
|
|
|
//
|
|
// Clean up the local system SID.
|
|
//
|
|
if (m_LocalSystemSID == NULL) {
|
|
FreeSid(m_LocalSystemSID);
|
|
}
|
|
|
|
DC_END_FN();
|
|
}
|
|
|
|
|
|
STDMETHODIMP
|
|
CRemoteDesktopServerHost::CreateRemoteDesktopSession(
|
|
REMOTE_DESKTOP_SHARING_CLASS sharingClass,
|
|
BOOL fEnableCallback,
|
|
LONG timeOut,
|
|
BSTR userHelpBlob,
|
|
ISAFRemoteDesktopSession **session
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Create a new RDS session
|
|
|
|
Arguments:
|
|
|
|
Return Value:
|
|
|
|
S_OK on success. Otherwise, an error code is returned.
|
|
|
|
--*/
|
|
{
|
|
DC_BEGIN_FN("CRemoteDesktopServerHost::CreateRemoteDesktopSession");
|
|
HRESULT hr;
|
|
|
|
|
|
CComBSTR bstr; bstr = "";
|
|
hr = CreateRemoteDesktopSessionEx(
|
|
sharingClass,
|
|
fEnableCallback,
|
|
timeOut,
|
|
userHelpBlob,
|
|
-1,
|
|
bstr,
|
|
session
|
|
);
|
|
DC_END_FN();
|
|
return hr;
|
|
}
|
|
|
|
STDMETHODIMP
|
|
CRemoteDesktopServerHost::CreateRemoteDesktopSessionEx(
|
|
REMOTE_DESKTOP_SHARING_CLASS sharingClass,
|
|
BOOL bEnableCallback,
|
|
LONG timeout,
|
|
BSTR userHelpCreateBlob,
|
|
LONG tsSessionID,
|
|
BSTR userSID,
|
|
ISAFRemoteDesktopSession **session
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Create a new RDS session
|
|
Note that the caller MUST call OpenRemoteDesktopSession() subsequent to
|
|
a successful completion of this call.
|
|
The connection does NOT happen until OpenRemoteDesktopSession() is called.
|
|
This call just initializes certain data, it does not open a connection
|
|
|
|
Arguments:
|
|
|
|
sharingClass - Desktop Sharing Class
|
|
fEnableCallback - TRUE if the Resolver is Enabled
|
|
timeOut - Lifespan of Remote Desktop Session
|
|
userHelpBlob - Optional User Blob to be Passed
|
|
to Resolver.
|
|
tsSessionID - Terminal Services Session ID or -1 if
|
|
undefined.
|
|
userSID - User SID or "" if undefined.
|
|
session - Returned Remote Desktop Session Interface.
|
|
|
|
Return Value:
|
|
|
|
S_OK on success. Otherwise, an error code is returned.
|
|
|
|
--*/
|
|
{
|
|
DC_BEGIN_FN("CRemoteDesktopServerHost::CreateRemoteDesktopSessionEx");
|
|
|
|
HRESULT hr = S_OK;
|
|
CComObject<CRemoteDesktopSession> *obj = NULL;
|
|
PSESSIONMAPENTRY mapEntry;
|
|
PSID psid;
|
|
|
|
TRC_NRM((TB, L"***Ref count is: %ld", m_dwRef));
|
|
|
|
//
|
|
// Get the local system SID.
|
|
//
|
|
psid = GetLocalSystemSID();
|
|
if (psid == NULL) {
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Need to impersonate the caller in order to determine if it is
|
|
// running in SYSTEM context.
|
|
//
|
|
hr = CoImpersonateClient();
|
|
if (hr != S_OK) {
|
|
TRC_ERR((TB, L"CoImpersonateClient: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// For Whistler, instances of a Remote Desktop Session are only
|
|
// "openable" from SYSTEM context, for security reasons.
|
|
//
|
|
#ifndef DISABLESECURITYCHECKS
|
|
if (!IsCallerSystem(psid)) {
|
|
TRC_ERR((TB, L"Caller is not SYSTEM."));
|
|
ASSERT(FALSE);
|
|
CoRevertToSelf();
|
|
hr = HRESULT_FROM_WIN32( ERROR_ACCESS_DENIED );
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
#endif
|
|
hr = CoRevertToSelf();
|
|
if (hr != S_OK) {
|
|
TRC_ERR((TB, L"CoRevertToSelf: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
if( sharingClass != DESKTOPSHARING_DEFAULT &&
|
|
sharingClass != NO_DESKTOP_SHARING &&
|
|
sharingClass != VIEWDESKTOP_PERMISSION_REQUIRE &&
|
|
sharingClass != VIEWDESKTOP_PERMISSION_NOT_REQUIRE &&
|
|
sharingClass != CONTROLDESKTOP_PERMISSION_REQUIRE &&
|
|
sharingClass != CONTROLDESKTOP_PERMISSION_NOT_REQUIRE ) {
|
|
|
|
// invalid parameter.
|
|
hr = E_INVALIDARG;
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
if( timeout < 0 ) {
|
|
|
|
hr = E_INVALIDARG;
|
|
goto CLEANUPANDEXIT;
|
|
|
|
}
|
|
|
|
if( NULL == session ) {
|
|
|
|
hr = E_POINTER;
|
|
goto CLEANUPANDEXIT;
|
|
|
|
}
|
|
|
|
//
|
|
// Instantiate the desktop server. Currently, we only support
|
|
// TSRDP.
|
|
//
|
|
obj = new CComObject<CTSRDPRemoteDesktopSession>();
|
|
if (obj != NULL) {
|
|
|
|
//
|
|
// ATL would normally take care of this for us.
|
|
//
|
|
obj->InternalFinalConstructAddRef();
|
|
hr = obj->FinalConstruct();
|
|
obj->InternalFinalConstructRelease();
|
|
|
|
}
|
|
else {
|
|
TRC_ERR((TB, L"Can't instantiate CTSRDPRemoteDesktopServer"));
|
|
hr = E_OUTOFMEMORY;
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Initialize the object.
|
|
//
|
|
hr = obj->Initialize(
|
|
NULL, this, sharingClass, bEnableCallback,
|
|
timeout, userHelpCreateBlob, tsSessionID, userSID
|
|
);
|
|
if (!SUCCEEDED(hr)) {
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Add it to the session map.
|
|
//
|
|
mapEntry = new SESSIONMAPENTRY();
|
|
if (mapEntry == NULL) {
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
mapEntry->obj = obj;
|
|
try {
|
|
m_SessionMap.insert(
|
|
SessionMap::value_type(obj->GetHelpSessionID(), mapEntry)
|
|
);
|
|
}
|
|
catch(CRemoteDesktopException x) {
|
|
hr = HRESULT_FROM_WIN32(x.m_ErrorCode);
|
|
delete mapEntry;
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
//
|
|
// Get the ISAFRemoteDesktopSession interface pointer.
|
|
//
|
|
hr = obj->QueryInterface(
|
|
IID_ISAFRemoteDesktopSession,
|
|
(void**)session
|
|
);
|
|
if (!SUCCEEDED(hr)) {
|
|
TRC_ERR((TB, L"m_RemoteDesktopSession->QueryInterface: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Add a reference to the object and to ourself so we can both
|
|
// stick around, even if the app goes away. The app needs to explicitly
|
|
// call CloseRemoteDesktopSession for the object to go away.
|
|
//
|
|
obj->AddRef();
|
|
this->AddRef();
|
|
|
|
CLEANUPANDEXIT:
|
|
|
|
//
|
|
// Delete the object on error.
|
|
//
|
|
if (!SUCCEEDED(hr)) {
|
|
if (obj != NULL) delete obj;
|
|
}
|
|
|
|
DC_END_FN();
|
|
return hr;
|
|
}
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Open an existing RDS session
|
|
This call should ALWAYS be made in order to connect to the client
|
|
Once this is called and connection is complete, the caller
|
|
MUST call DisConnect() to make another connection to the client
|
|
Otherwise, the connection does not happen
|
|
|
|
Arguments:
|
|
|
|
Return Value:
|
|
|
|
S_OK on success. Otherwise, an error code is returned.
|
|
|
|
--*/
|
|
STDMETHODIMP
|
|
CRemoteDesktopServerHost::OpenRemoteDesktopSession(
|
|
BSTR parms,
|
|
ISAFRemoteDesktopSession **session
|
|
)
|
|
{
|
|
DC_BEGIN_FN("CRemoteDesktopServerHost::OpenRemoteDesktopSession");
|
|
|
|
CComObject<CRemoteDesktopSession> *obj = NULL;
|
|
CComBSTR hostname;
|
|
CComBSTR tmp("");
|
|
HRESULT hr = S_OK;
|
|
SessionMap::iterator iter;
|
|
CComBSTR parmsHelpSessionId;
|
|
DWORD protocolType;
|
|
PSESSIONMAPENTRY mapEntry;
|
|
PSID psid;
|
|
|
|
//
|
|
// Get the local system SID.
|
|
//
|
|
psid = GetLocalSystemSID();
|
|
if (psid == NULL) {
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Need to impersonate the caller in order to determine if it is
|
|
// running in SYSTEM context.
|
|
//
|
|
hr = CoImpersonateClient();
|
|
if (hr != S_OK) {
|
|
TRC_ERR((TB, L"CoImpersonateClient: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// For Whistler, instances of a Remote Desktop Session are only
|
|
// "openable" from SYSTEM context, for security reasons.
|
|
//
|
|
#ifndef DISABLESECURITYCHECKS
|
|
if (!IsCallerSystem(psid)) {
|
|
TRC_ERR((TB, L"Caller is not SYSTEM."));
|
|
ASSERT(FALSE);
|
|
CoRevertToSelf();
|
|
hr = HRESULT_FROM_WIN32( ERROR_ACCESS_DENIED );
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
#endif
|
|
hr = CoRevertToSelf();
|
|
if (hr != S_OK) {
|
|
TRC_ERR((TB, L"CoRevertToSelf: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Parse out the help session ID.
|
|
// TODO: Need to modify this so some of the parms are
|
|
// optional.
|
|
//
|
|
DWORD dwVersion;
|
|
DWORD result = ParseConnectParmsString(
|
|
parms, &dwVersion, &protocolType, hostname, tmp, tmp,
|
|
parmsHelpSessionId, tmp, tmp, tmp
|
|
);
|
|
if (result != ERROR_SUCCESS) {
|
|
hr = HRESULT_FROM_WIN32(result);
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// If we already have the session open then just return a
|
|
// reference.
|
|
//
|
|
iter = m_SessionMap.find(parmsHelpSessionId);
|
|
if (iter != m_SessionMap.end()) {
|
|
mapEntry = (*iter).second;
|
|
hr = mapEntry->obj->QueryInterface(
|
|
IID_ISAFRemoteDesktopSession,
|
|
(void**)session
|
|
);
|
|
//
|
|
//Start listening if we succeeded
|
|
//
|
|
if (SUCCEEDED(hr)) {
|
|
hr = mapEntry->obj->StartListening();
|
|
//
|
|
//release the interface pointer if we didn't succeed
|
|
//
|
|
if (!SUCCEEDED(hr)) {
|
|
(*session)->Release();
|
|
*session = NULL;
|
|
}
|
|
}
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Instantiate the desktop server. Currently, we only support
|
|
// TSRDP.
|
|
//
|
|
obj = new CComObject<CTSRDPRemoteDesktopSession>();
|
|
if (obj != NULL) {
|
|
|
|
//
|
|
// ATL would normally take care of this for us.
|
|
//
|
|
obj->InternalFinalConstructAddRef();
|
|
hr = obj->FinalConstruct();
|
|
obj->InternalFinalConstructRelease();
|
|
|
|
}
|
|
else {
|
|
TRC_ERR((TB, L"Can't instantiate CTSRDPRemoteDesktopServer"));
|
|
hr = E_OUTOFMEMORY;
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Initialize the object.
|
|
//
|
|
// The desktop sharing parameter (NO_DESKTOP_SHARING) is ignored for
|
|
// an existing session.
|
|
// bEnableCallback and timeout parameter is ignored for existing session
|
|
//
|
|
hr = obj->Initialize(parms, this, NO_DESKTOP_SHARING, TRUE, 0, CComBSTR(L""), -1, CComBSTR(L""));
|
|
if (!SUCCEEDED(hr)) {
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
hr = obj->StartListening();
|
|
|
|
if (!SUCCEEDED(hr)) {
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
hr = obj->UseHostName( hostname );
|
|
if( FAILED(hr) ) {
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Add it to the session map.
|
|
//
|
|
mapEntry = new SESSIONMAPENTRY();
|
|
if (mapEntry == NULL) {
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
mapEntry->obj = obj;
|
|
try {
|
|
m_SessionMap.insert(
|
|
SessionMap::value_type(obj->GetHelpSessionID(), mapEntry)
|
|
);
|
|
}
|
|
catch(CRemoteDesktopException x) {
|
|
hr = HRESULT_FROM_WIN32(x.m_ErrorCode);
|
|
delete mapEntry;
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
//
|
|
// Get the ISAFRemoteDesktopSession interface pointer.
|
|
//
|
|
hr = obj->QueryInterface(
|
|
IID_ISAFRemoteDesktopSession,
|
|
(void**)session
|
|
);
|
|
if (!SUCCEEDED(hr)) {
|
|
TRC_ERR((TB, L"m_RemoteDesktopSession->QueryInterface: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Add a reference to the object and to ourself so we can both
|
|
// stick around, even if the app goes away. The app needs to explicitly
|
|
// call CloseRemoteDesktopSession for the object to go away.
|
|
//
|
|
obj->AddRef();
|
|
this->AddRef();
|
|
|
|
CLEANUPANDEXIT:
|
|
//
|
|
// Delete the object on error.
|
|
//
|
|
if (!SUCCEEDED(hr)) {
|
|
if (obj != NULL) delete obj;
|
|
}
|
|
|
|
|
|
DC_END_FN();
|
|
|
|
return hr;
|
|
}
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Close an existing RDS session
|
|
|
|
Arguments:
|
|
|
|
Return Value:
|
|
|
|
S_OK on success. Otherwise, an error code is returned.
|
|
|
|
--*/
|
|
STDMETHODIMP
|
|
CRemoteDesktopServerHost::CloseRemoteDesktopSession(
|
|
ISAFRemoteDesktopSession *session
|
|
)
|
|
{
|
|
DC_BEGIN_FN("CRemoteDesktopServerHost::CloseRemoteDesktopSession");
|
|
|
|
HRESULT hr;
|
|
DWORD result;
|
|
CComBSTR tmp;
|
|
CComBSTR parmsHelpSessionId;
|
|
CComBSTR parms;
|
|
DWORD protocolType;
|
|
SessionMap::iterator iter;
|
|
DWORD dwVersion;
|
|
|
|
//
|
|
// Get the connection parameters.
|
|
//
|
|
hr = session->get_ConnectParms(&parms);
|
|
if (!SUCCEEDED(hr)) {
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Parse them for the help session ID.
|
|
// TODO: I should make some of the args to this function, optional.
|
|
//
|
|
result = ParseConnectParmsString(
|
|
parms, &dwVersion, &protocolType, tmp, tmp, tmp,
|
|
parmsHelpSessionId, tmp, tmp, tmp
|
|
);
|
|
if (result != ERROR_SUCCESS) {
|
|
hr = HRESULT_FROM_WIN32(result);
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Delete the entry from the session map.
|
|
//
|
|
iter = m_SessionMap.find(parmsHelpSessionId);
|
|
if (iter != m_SessionMap.end()) {
|
|
m_SessionMap.erase(iter);
|
|
}
|
|
else {
|
|
ASSERT(FALSE);
|
|
}
|
|
|
|
//
|
|
// Remove our reference to the session object. This way it can
|
|
// go away when the application releases it.
|
|
//
|
|
session->Release();
|
|
|
|
//
|
|
// Remove the reference to ourself that we added when we opened
|
|
// the session object.
|
|
//
|
|
this->Release();
|
|
|
|
//
|
|
// Get the session manager interface, if we don't already have one.
|
|
//
|
|
//
|
|
// Open an instance of the Remote Desktop Help Session Manager service.
|
|
//
|
|
if (m_HelpSessionManager == NULL) {
|
|
hr = m_HelpSessionManager.CoCreateInstance(CLSID_RemoteDesktopHelpSessionMgr);
|
|
if (!SUCCEEDED(hr)) {
|
|
TRC_ERR((TB, TEXT("Can't create help session manager: %08X"), hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Set the security level to impersonate. This is required by
|
|
// the session manager.
|
|
//
|
|
hr = CoSetProxyBlanket(
|
|
(IUnknown *)m_HelpSessionManager,
|
|
RPC_C_AUTHN_DEFAULT,
|
|
RPC_C_AUTHZ_DEFAULT,
|
|
NULL,
|
|
RPC_C_AUTHN_LEVEL_DEFAULT,
|
|
RPC_C_IMP_LEVEL_IMPERSONATE,
|
|
NULL,
|
|
EOAC_NONE
|
|
);
|
|
if (!SUCCEEDED(hr)) {
|
|
TRC_ERR((TB, TEXT("CoSetProxyBlanket: %08X"), hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Remove the help session with the session manager.
|
|
//
|
|
hr = m_HelpSessionManager->DeleteHelpSession(parmsHelpSessionId);
|
|
if (!SUCCEEDED(hr)) {
|
|
TRC_ERR((TB, L"DeleteHelpSession: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
CLEANUPANDEXIT:
|
|
|
|
DC_END_FN();
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
STDMETHODIMP
|
|
CRemoteDesktopServerHost::ConnectToExpert(
|
|
/*[in]*/ BSTR connectParmToExpert,
|
|
/*[in]*/ LONG timeout,
|
|
/*[out, retval]*/ LONG* pSafErrCode
|
|
)
|
|
/*++
|
|
|
|
Description:
|
|
|
|
Given connection parameters to expert machine, routine invoke TermSrv winsta API to
|
|
initiate connection from TS server to TS client ActiveX control on the expert side.
|
|
|
|
Parameters:
|
|
|
|
connectParmToExpert : connection parameter to connect to expert machine.
|
|
timeout : Connection timeout, this timeout is per ip address listed in connection parameter
|
|
not total connection timeout for the routine.
|
|
pSafErrCode : Pointer to LONG to receive detail error code.
|
|
|
|
Returns:
|
|
|
|
S_OK or E_FAIL
|
|
|
|
--*/
|
|
{
|
|
HRESULT hr = S_OK;
|
|
ServerAddress expertAddress;
|
|
ServerAddressList expertAddressList;
|
|
LONG SafErrCode = SAFERROR_NOERROR;
|
|
TDI_ADDRESS_IP expertTDIAddress;
|
|
ULONG netaddr;
|
|
WSADATA wsaData;
|
|
PSID psid;
|
|
|
|
DC_BEGIN_FN("CRemoteDesktopServerHost::ConnectToExpert");
|
|
|
|
//
|
|
// Get the local system SID.
|
|
//
|
|
psid = GetLocalSystemSID();
|
|
if (psid == NULL) {
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Need to impersonate the caller in order to determine if it is
|
|
// running in SYSTEM context.
|
|
//
|
|
hr = CoImpersonateClient();
|
|
if (hr != S_OK) {
|
|
TRC_ERR((TB, L"CoImpersonateClient: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// For Whistler, instances of a Remote Desktop Session are only
|
|
// "openable" from SYSTEM context, for security reasons.
|
|
//
|
|
#ifndef DISABLESECURITYCHECKS
|
|
if (!IsCallerSystem(psid)) {
|
|
TRC_ERR((TB, L"Caller is not SYSTEM."));
|
|
ASSERT(FALSE);
|
|
CoRevertToSelf();
|
|
hr = HRESULT_FROM_WIN32( ERROR_ACCESS_DENIED );
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
#endif
|
|
|
|
hr = CoRevertToSelf();
|
|
if (hr != S_OK) {
|
|
TRC_ERR((TB, L"CoRevertToSelf: %08X", hr));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Parse address list in connection parameter.
|
|
//
|
|
hr = ParseAddressList( connectParmToExpert, expertAddressList );
|
|
if( FAILED(hr) ) {
|
|
TRC_ERR((TB, TEXT("ParseAddressList: %08X"), hr));
|
|
hr = E_INVALIDARG;
|
|
SafErrCode = SAFERROR_INVALIDPARAMETERSTRING;
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
if( 0 == expertAddressList.size() ) {
|
|
TRC_ERR((TB, L"Invalid connection address list"));
|
|
SafErrCode = SAFERROR_INVALIDPARAMETERSTRING;
|
|
hr = E_INVALIDARG;
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Loop thru all address in parm and try connection one
|
|
// at a time, bail out if system is shutting down or
|
|
// some critical error
|
|
//
|
|
while( expertAddressList.size() > 0 ) {
|
|
|
|
expertAddress = expertAddressList.front();
|
|
expertAddressList.pop_front();
|
|
|
|
//
|
|
// Invalid connect parameters, we must have port number at least.
|
|
//
|
|
if( 0 == expertAddress.portNumber ||
|
|
0 == lstrlen(expertAddress.ServerName) ) {
|
|
TRC_ERR((TB, L"Invalid address/port %s %d", expertAddress.ServerName, expertAddress.portNumber));
|
|
SafErrCode = SAFERROR_INVALIDPARAMETERSTRING;
|
|
continue;
|
|
}
|
|
|
|
hr = TranslateStringAddress( expertAddress.ServerName, &netaddr );
|
|
if( FAILED(hr) ) {
|
|
TRC_ERR((TB, L"TranslateStringAddress() on %s failed with 0x%08x", expertAddress.ServerName, hr));
|
|
SafErrCode = SAFERROR_INVALIDPARAMETERSTRING;
|
|
continue;
|
|
}
|
|
|
|
ZeroMemory(&expertTDIAddress, TDI_ADDRESS_LENGTH_IP);
|
|
expertTDIAddress.in_addr = netaddr;
|
|
expertTDIAddress.sin_port = htons(expertAddress.portNumber);
|
|
|
|
if( FALSE == WinStationConnectCallback(
|
|
SERVERNAME_CURRENT,
|
|
timeout,
|
|
TDI_ADDRESS_TYPE_IP,
|
|
(PBYTE)&expertTDIAddress,
|
|
TDI_ADDRESS_LENGTH_IP
|
|
) ) {
|
|
//
|
|
// TransferConnectionToIdleWinstation() in TermSrv might just return -1
|
|
// few of them we need to bail out.
|
|
|
|
DWORD dwStatus;
|
|
|
|
dwStatus = GetLastError();
|
|
if( ERROR_SHUTDOWN_IN_PROGRESS == dwStatus ) {
|
|
// system or termsrv is shuting down.
|
|
hr = HRESULT_FROM_WIN32( ERROR_SHUTDOWN_IN_PROGRESS );
|
|
SafErrCode = SAFERROR_SYSTEMSHUTDOWN;
|
|
break;
|
|
}
|
|
else if( ERROR_ACCESS_DENIED == dwStatus ) {
|
|
// security check failed
|
|
hr = HRESULT_FROM_WIN32( ERROR_ACCESS_DENIED );
|
|
SafErrCode = SAFERROR_BYSERVER;
|
|
ASSERT(FALSE);
|
|
break;
|
|
}
|
|
else if( ERROR_INVALID_PARAMETER == dwStatus ) {
|
|
// internal error in rdshost.
|
|
hr = HRESULT_FROM_WIN32( ERROR_INTERNAL_ERROR );
|
|
SafErrCode = SAFERROR_INTERNALERROR;
|
|
ASSERT(FALSE);
|
|
break;
|
|
}
|
|
|
|
SafErrCode = SAFERROR_WINSOCK_FAILED;
|
|
}
|
|
else {
|
|
//
|
|
// successful connection
|
|
//
|
|
|
|
SafErrCode = SAFERROR_NOERROR;
|
|
break;
|
|
}
|
|
|
|
|
|
//
|
|
// Try next connection.
|
|
//
|
|
}
|
|
|
|
CLEANUPANDEXIT:
|
|
|
|
*pSafErrCode = SafErrCode;
|
|
|
|
DC_END_FN();
|
|
return hr;
|
|
}
|
|
|
|
|
|
HRESULT
|
|
CRemoteDesktopServerHost::TranslateStringAddress(
|
|
IN LPTSTR pszAddress,
|
|
OUT ULONG* pNetAddr
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Translate IP Address or machine name to network address.
|
|
|
|
Parameters:
|
|
|
|
pszAddress : Pointer to IP address or machine name.
|
|
pNetAddr : Point to ULONG to receive address in IPV4.
|
|
|
|
Returns:
|
|
|
|
S_OK or error code
|
|
|
|
--*/
|
|
{
|
|
HRESULT hr = S_OK;
|
|
unsigned long addr;
|
|
LPSTR pszAnsiAddress = NULL;
|
|
DWORD dwAddressBufSize;
|
|
DWORD dwStatus;
|
|
|
|
|
|
DC_BEGIN_FN("CRemoteDesktopServerHost::TranslateStringAddress");
|
|
|
|
|
|
dwAddressBufSize = lstrlen(pszAddress) + 1;
|
|
pszAnsiAddress = (LPSTR)LocalAlloc(LPTR, dwAddressBufSize); // converting from WCHAR to CHAR.
|
|
if( NULL == pszAnsiAddress ) {
|
|
hr = E_OUTOFMEMORY;
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
//
|
|
// Convert wide char to ANSI string
|
|
//
|
|
dwStatus = WideCharToMultiByte(
|
|
GetACP(),
|
|
0,
|
|
pszAddress,
|
|
-1,
|
|
pszAnsiAddress,
|
|
dwAddressBufSize,
|
|
NULL,
|
|
NULL
|
|
);
|
|
|
|
if( 0 == dwStatus ) {
|
|
dwStatus = GetLastError();
|
|
hr = HRESULT_FROM_WIN32(dwStatus);
|
|
|
|
TRC_ERR((TB, L"WideCharToMultiByte() failed with %d", dwStatus));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
addr = inet_addr( pszAnsiAddress );
|
|
if( INADDR_NONE == addr ) {
|
|
struct hostent* pHostEnt = NULL;
|
|
pHostEnt = gethostbyname( pszAnsiAddress );
|
|
if( NULL != pHostEnt ) {
|
|
addr = ((struct sockaddr_in *)(pHostEnt->h_addr))->sin_addr.S_un.S_addr;
|
|
}
|
|
}
|
|
|
|
if( INADDR_NONE == addr ) {
|
|
dwStatus = GetLastError();
|
|
|
|
hr = HRESULT_FROM_WIN32(dwStatus);
|
|
TRC_ERR((TB, L"Can't translate address %w", pszAddress));
|
|
goto CLEANUPANDEXIT;
|
|
}
|
|
|
|
*pNetAddr = addr;
|
|
|
|
CLEANUPANDEXIT:
|
|
|
|
if( NULL != pszAnsiAddress ) {
|
|
LocalFree(pszAnsiAddress);
|
|
}
|
|
|
|
DC_END_FN();
|
|
return hr;
|
|
}
|
|
|
|
|
|
|