594 lines
12 KiB
C++
594 lines
12 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 2000
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//
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// File: updates.cpp
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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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/////////////////////////////////////////////////////////////////////////////
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//
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GENERIC_MAPPING Updates::m_AdminGenericMapping = {
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STANDARD_RIGHTS_READ, // Generic read
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STANDARD_RIGHTS_WRITE, // Generic write
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STANDARD_RIGHTS_EXECUTE, // Generic execute
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STANDARD_RIGHTS_READ | // Generic all
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STANDARD_RIGHTS_WRITE |
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STANDARD_RIGHTS_EXECUTE
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};
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Updates::Updates()
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: m_pAdminSid(NULL),
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m_pAdminAcl(NULL),
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m_refs(0)
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{
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m_hEngineMutex = CreateMutex(NULL, FALSE, NULL);
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}
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Updates::~Updates()
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{
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CloseHandle(m_hEngineMutex);
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if ( NULL != m_pAdminAcl )
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{
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delete m_pAdminAcl;
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}
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if ( NULL != m_pAdminSid )
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{
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FreeSid(m_pAdminSid);
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}
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DEBUGMSG("Updates: CoDisconnectObject");
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if ( FAILED(CoDisconnectObject((IUnknown *)this, 0)) )
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{
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DEBUGMSG("CoDisconnectObject() failed");
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}
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}
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BOOL Updates::m_fInitializeSecurity(void)
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{
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BOOL fStatus;
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ULONG cbAcl;
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SID_IDENTIFIER_AUTHORITY ntAuthority = SECURITY_NT_AUTHORITY;
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fStatus = AllocateAndInitializeSid(
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&ntAuthority,
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2,
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SECURITY_BUILTIN_DOMAIN_RID,
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DOMAIN_ALIAS_RID_ADMINS,
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0,0,0,0,0,0,
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&m_pAdminSid);
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if ( !fStatus )
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{
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DEBUGMSG("Fail to initialize SID with error %d", GetLastError());
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return FALSE;
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}
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cbAcl = sizeof(ACL)
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+ sizeof(ACCESS_ALLOWED_ACE)
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- sizeof(DWORD) //sizeof(ACCESS_ALLOWED_ACE.SidStart)
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+ GetLengthSid(m_pAdminSid);
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m_pAdminAcl = (PACL) new BYTE[ cbAcl ];
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if ( (NULL == m_pAdminAcl)
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|| !InitializeAcl(m_pAdminAcl, cbAcl, ACL_REVISION)
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|| !AddAccessAllowedAce(m_pAdminAcl, ACL_REVISION, STANDARD_RIGHTS_WRITE, m_pAdminSid)
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|| !InitializeSecurityDescriptor(&m_AdminSecurityDesc, SECURITY_DESCRIPTOR_REVISION)
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|| !SetSecurityDescriptorOwner(&m_AdminSecurityDesc, m_pAdminSid, FALSE)
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|| !SetSecurityDescriptorGroup(&m_AdminSecurityDesc, m_pAdminSid, FALSE)
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|| !SetSecurityDescriptorDacl(&m_AdminSecurityDesc, TRUE, m_pAdminAcl, FALSE) )
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{
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if ( NULL != m_pAdminAcl )
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{
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delete m_pAdminAcl;
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m_pAdminAcl = NULL;
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FreeSid(m_pAdminSid);
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m_pAdminSid = NULL;
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}
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return FALSE;
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}
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return TRUE;
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}
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HRESULT Updates::m_AccessCheckClient(void)
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{
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BOOL accessGranted = FALSE;
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DWORD grantedAccess;
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HANDLE clientToken = NULL;
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BYTE privilegeSet[500]; // Large buffer
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DWORD privilegeSetSize = sizeof(privilegeSet);
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static BOOL fInitSecurity = FALSE;
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if ( !fInitSecurity )
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{
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if ( !(fInitSecurity = m_fInitializeSecurity()) )
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{
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DEBUGMSG("Fail to initialized SID");
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return E_ACCESSDENIED;
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}
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}
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if (FAILED(CoImpersonateClient()))
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{
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return E_ACCESSDENIED;
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}
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if ( OpenThreadToken(GetCurrentThread(), TOKEN_QUERY, TRUE, &clientToken) )
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{
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if (FALSE == AccessCheck(
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&m_AdminSecurityDesc,
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clientToken,
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STANDARD_RIGHTS_WRITE,
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&m_AdminGenericMapping,
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(PPRIVILEGE_SET) privilegeSet,
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&privilegeSetSize,
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&grantedAccess,
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&accessGranted))
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{
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DEBUGMSG("Fail to call AccessCheck() with error %d", GetLastError());
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}
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}
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if ( clientToken != NULL )
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{
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CloseHandle( clientToken );
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}
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if (FAILED(CoRevertToSelf()))
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{
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return E_ACCESSDENIED;;
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}
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return (accessGranted )? S_OK : E_ACCESSDENIED;
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}
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STDMETHODIMP Updates::QueryInterface(REFIID riid, void **ppvObject)
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{
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if (NULL == ppvObject)
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{
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return E_INVALIDARG;
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}
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if(riid == IID_IUnknown ||
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riid == IID_IClassFactory ||
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riid == IID_IUpdates)
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{
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*ppvObject = this;
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AddRef();
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}
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else
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{
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*ppvObject = NULL;
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return E_NOINTERFACE;
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}
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return S_OK;
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}
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ULONG __stdcall Updates::AddRef()
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{
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long cRef = InterlockedIncrement(&m_refs);
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DEBUGMSG("Updates AddRef = %d", cRef);
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return cRef;
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}
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ULONG __stdcall Updates::Release()
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{
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long cRef = InterlockedDecrement(&m_refs);
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DEBUGMSG("Updates Release = %d", cRef);
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return cRef;
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}
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STDMETHODIMP Updates::CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppvObject)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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if(pUnkOuter != NULL)
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{
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return CLASS_E_NOAGGREGATION;
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}
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if (NULL == ppvObject)
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{
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return E_INVALIDARG;
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}
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if(riid == IID_IUnknown ||
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riid == IID_IClassFactory ||
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riid == IID_IUpdates)
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{
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*ppvObject = this;
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AddRef();
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}
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else
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{
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*ppvObject = NULL;
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return E_NOINTERFACE;
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}
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return S_OK;
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}
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STDMETHODIMP Updates::LockServer(BOOL /*bFlag*/)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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return E_FAIL;
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}
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STDMETHODIMP Updates::AvailableSessions(UINT *pcSess)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr))
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{
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return hr;
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}
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if (NULL == pcSess)
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{
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return E_INVALIDARG;
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}
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*pcSess = ::AvailableSessions();
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//DEBUGMSG("WUAUENG Updates::AvailableSessions was called and return value is %d", *pcSess);
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return S_OK;
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}
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STDMETHODIMP Updates::get_State(/*[out, retval]*/ AUSTATE *pAuState)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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if (NULL == pAuState)
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{
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return E_INVALIDARG;
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}
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WaitForSingleObject(m_hEngineMutex, INFINITE);
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pAuState->dwState = gpState->GetState();
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pAuState->fDisconnected = gpState->fDisconnected();
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pAuState->dwCltAction = gpState->GetCltAction();
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gpState->SetCltAction(AUCLT_ACTION_NONE); //once client read it, reset
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ReleaseMutex(m_hEngineMutex);
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return S_OK;
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}
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STDMETHODIMP Updates::GetUpdatesList(/*[out]*/ VARIANT *pUpdates)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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DEBUGMSG("WUAUENG Getting updates list");
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if ( NULL == pUpdates )
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{
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return E_INVALIDARG;
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}
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WaitForSingleObject(m_hEngineMutex, INFINITE);
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hr = ::GetUpdatesList(pUpdates);
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ReleaseMutex(m_hEngineMutex);
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return hr;
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}
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STDMETHODIMP Updates::GetNotifyData(/*[out]*/ CLIENT_NOTIFY_DATA *pNotifyData)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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DEBUGMSG("WUAUENG Getting client notify data");
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if ( NULL == pNotifyData )
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{
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return E_INVALIDARG;
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}
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WaitForSingleObject(m_hEngineMutex, INFINITE);
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*pNotifyData = gClientNotifyData;
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ReleaseMutex(m_hEngineMutex);
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return hr;
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}
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/* fixcode, only used by client, could get rid of and add VARIANT to ClientMessage()*/
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STDMETHODIMP Updates::SaveSelections(/*[in]*/ VARIANT vUpdates)
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{
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HRESULT hr = m_AccessCheckClient();
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DEBUGMSG("Updates::SaveSelections start");
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if ( FAILED(hr) )
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{
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goto done;
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}
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DEBUGMSG("WUAUENG Saving selections, state is %d", gpState->GetState());
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if (vUpdates.vt != (VT_ARRAY | VT_VARIANT))
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{
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DEBUGMSG("WUAUENG invalid variant list");
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return E_INVALIDARG;
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}
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WaitForSingleObject(m_hEngineMutex, INFINITE);
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::saveSelection(&vUpdates);
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hr = S_OK;
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ReleaseMutex(m_hEngineMutex);
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done:
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DEBUGMSG("Updates::SaveSelections end");
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return hr;
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}
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STDMETHODIMP Updates::StartDownload(void)
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{
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DEBUGMSG("WUAUENG updates->StartDownload called");
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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WaitForSingleObject(m_hEngineMutex, INFINITE);
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hr = ::StartDownload();
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ReleaseMutex(m_hEngineMutex);
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return hr;
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}
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STDMETHODIMP Updates::GetDownloadStatus(UINT *pPercentage, DWORD *pStatus)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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if ((NULL == pPercentage) || (NULL == pStatus))
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{
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return E_INVALIDARG;
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}
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WaitForSingleObject(m_hEngineMutex, INFINITE);
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hr = ::GetDownloadStatus(pPercentage, pStatus);
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ReleaseMutex(m_hEngineMutex);
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return hr;
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}
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STDMETHODIMP Updates::SetDownloadPaused(/*[in]*/ BOOL bPaused)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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return PauseDownload(bPaused);
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}
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STDMETHODIMP Updates::ClientMessage(/*[in]*/ UINT msg)
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{
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HRESULT hr = m_AccessCheckClient();
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if ( FAILED(hr) )
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{
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return hr;
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}
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// fixcode is this whole interface just one big security whole? what about other
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// routines. can't anyone call them?
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switch (msg)
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{
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case AUMSG_PRE_INSTALL:
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DEBUGMSG("WUAUENG ClientMessage(AUMSG_PRE_INSTALL)");
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|
|
DEBUGMSG("WUAUENG Msg:Install, State->Install Pending");
|
||
|
|
gpState->SetState(AUSTATE_INSTALL_PENDING); // is there any benefit to doing this?
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
DEBUGMSG("WUAUENG ClientMessage(!!unknown!!)");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP Updates::get_Option(AUOPTION * pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = m_AccessCheckClient();
|
||
|
|
|
||
|
|
if ( FAILED(hr) )
|
||
|
|
{
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NULL == pVal)
|
||
|
|
{
|
||
|
|
return E_INVALIDARG;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NULL == gpState)
|
||
|
|
{
|
||
|
|
return E_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
*pVal = gpState->GetOption();
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP Updates::put_Option(AUOPTION val)
|
||
|
|
{
|
||
|
|
HRESULT hr = m_AccessCheckClient();
|
||
|
|
|
||
|
|
if ( FAILED(hr) )
|
||
|
|
{
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
AUOPTION CurrOption = gpState->GetOption();
|
||
|
|
|
||
|
|
if ( FAILED(hr = gpState->SetOption(val)) )
|
||
|
|
{
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
// if asking to disable, post msg
|
||
|
|
if ( (AUOPTION_AUTOUPDATE_DISABLE == val.dwOption) && (CurrOption.dwOption != val.dwOption) )
|
||
|
|
{
|
||
|
|
DEBUGMSG("AU service disabled");
|
||
|
|
DisableAU();
|
||
|
|
}
|
||
|
|
// else if asking to enable, post msg
|
||
|
|
else if ((AUOPTION_AUTOUPDATE_DISABLE == CurrOption.dwOption) && (val.dwOption != CurrOption.dwOption)
|
||
|
|
|| gpState->GetState() < AUSTATE_DETECT_PENDING)
|
||
|
|
{
|
||
|
|
ResetEngine();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (CurrOption.dwOption != val.dwOption
|
||
|
|
|| (AUOPTION_SCHEDULED == val.dwOption
|
||
|
|
&& (CurrOption.dwSchedInstallDay != val.dwSchedInstallDay
|
||
|
|
|| CurrOption.dwSchedInstallTime != val.dwSchedInstallTime)))
|
||
|
|
{
|
||
|
|
SetEvent(ghSettingsChanged);
|
||
|
|
}
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP Updates::ConfigureAU()
|
||
|
|
{
|
||
|
|
HRESULT hr = m_AccessCheckClient();
|
||
|
|
|
||
|
|
if ( FAILED(hr) )
|
||
|
|
{
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
WaitForSingleObject(m_hEngineMutex, 10000);
|
||
|
|
if ( AUSTATE_NOT_CONFIGURED == gpState->GetState() )
|
||
|
|
{
|
||
|
|
PostThreadMessage(gdwWorkerThreadId, AUMSG_EULA_ACCEPTED, 0, 0);
|
||
|
|
}
|
||
|
|
ReleaseMutex(m_hEngineMutex);
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
STDMETHODIMP Updates::get_EvtHandles(DWORD dwCltProcId, AUEVTHANDLES *pauevtHandles)
|
||
|
|
{
|
||
|
|
HRESULT hr = m_AccessCheckClient();
|
||
|
|
|
||
|
|
if ( FAILED(hr) )
|
||
|
|
{
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
WaitForSingleObject(ghMutex, INFINITE); // make sure proc id has been populated
|
||
|
|
DWORD dwProcId = ghClientHandles.GetProcId();
|
||
|
|
ReleaseMutex(ghMutex);
|
||
|
|
|
||
|
|
if (dwProcId != dwCltProcId)
|
||
|
|
{
|
||
|
|
DEBUGMSG("WUAUENG Unauthorized client %d trying to get event handles for real client %d", dwCltProcId, dwProcId);
|
||
|
|
return E_ACCESSDENIED;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NULL == pauevtHandles)
|
||
|
|
{
|
||
|
|
DEBUGMSG("WUAUENG GetEvtHandles invalid argument");
|
||
|
|
return E_INVALIDARG;
|
||
|
|
}
|
||
|
|
WaitForSingleObject(m_hEngineMutex, INFINITE);
|
||
|
|
hr = ::GetEvtHandles(pauevtHandles);
|
||
|
|
ReleaseMutex(m_hEngineMutex);
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
STDMETHODIMP Updates::GetInstallXML(/*[out]*/ BSTR *pbstrCatalogXML, /*[out]*/ BSTR *pbstrDownloadXML)
|
||
|
|
{
|
||
|
|
DEBUGMSG("Updates::GetInstallXML");
|
||
|
|
|
||
|
|
HRESULT hr = m_AccessCheckClient();
|
||
|
|
|
||
|
|
if ( FAILED(hr) )
|
||
|
|
{
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NULL == pbstrCatalogXML || NULL == pbstrDownloadXML)
|
||
|
|
{
|
||
|
|
return E_INVALIDARG;
|
||
|
|
}
|
||
|
|
|
||
|
|
WaitForSingleObject(m_hEngineMutex, INFINITE);
|
||
|
|
|
||
|
|
hr = ::GetInstallXML(pbstrCatalogXML, pbstrDownloadXML);
|
||
|
|
|
||
|
|
ReleaseMutex(m_hEngineMutex);
|
||
|
|
done:
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP Updates::LogEvent(/*[in]*/ WORD wType, /*[in]*/ WORD wCategory, /*[in]*/ DWORD dwEventID, /*[in]*/ VARIANT vItems)
|
||
|
|
{
|
||
|
|
DEBUGMSG("Updates::LogEvent");
|
||
|
|
|
||
|
|
HRESULT hr = m_AccessCheckClient();
|
||
|
|
|
||
|
|
if ( FAILED(hr) )
|
||
|
|
{
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((VT_ARRAY | VT_BSTR) != vItems.vt ||
|
||
|
|
NULL == vItems.parray)
|
||
|
|
{
|
||
|
|
DEBUGMSG("WUAUENG invalid variant list");
|
||
|
|
return E_INVALIDARG;
|
||
|
|
}
|
||
|
|
WaitForSingleObject(m_hEngineMutex, INFINITE);
|
||
|
|
|
||
|
|
CAUEventLog aueventlog(g_hInstance);
|
||
|
|
hr = aueventlog.LogEvent(
|
||
|
|
wType,
|
||
|
|
wCategory,
|
||
|
|
dwEventID,
|
||
|
|
vItems.parray) ? S_OK : E_FAIL;
|
||
|
|
|
||
|
|
ReleaseMutex(m_hEngineMutex);
|
||
|
|
return hr;
|
||
|
|
}
|