694 lines
21 KiB
C++
694 lines
21 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1996 - 1999
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//
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// File: si.cpp
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//
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// This file contains the implementation of the CSecurityInformation
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// base class.
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//
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//--------------------------------------------------------------------------
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#include "rshx32.h"
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#include <shlapip.h>
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#if(_WIN32_WINNT < 0x0500)
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//
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// NT4 SP4 doesn't support SetSecurityDescriptorControl, so
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// emulate it here
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//
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BOOL
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WINAPI
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SetSecurityDescriptorControl(PSECURITY_DESCRIPTOR psd,
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SECURITY_DESCRIPTOR_CONTROL wControlMask,
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SECURITY_DESCRIPTOR_CONTROL wControlBits)
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{
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DWORD dwErr = NOERROR;
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PISECURITY_DESCRIPTOR pSD = (PISECURITY_DESCRIPTOR)psd;
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if (pSD)
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pSD->Control = (pSD->Control & ~wControlMask) | wControlBits;
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else
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dwErr = ERROR_INVALID_PARAMETER;
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return dwErr;
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}
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#endif
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#include <dsrole.h>
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BOOL IsStandalone(LPCTSTR pszMachine, PBOOL pbIsDC)
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{
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BOOL bStandalone = TRUE;
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PDSROLE_PRIMARY_DOMAIN_INFO_BASIC pDsRole = NULL;
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//
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// Find out if target machine is a standalone machine or joined to
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// an NT domain.
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//
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__try
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{
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if (pbIsDC)
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*pbIsDC = FALSE;
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DsRoleGetPrimaryDomainInformation(pszMachine,
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DsRolePrimaryDomainInfoBasic,
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(PBYTE*)&pDsRole);
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}
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__finally
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{
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}
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if (NULL != pDsRole)
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{
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if (pDsRole->MachineRole == DsRole_RoleStandaloneWorkstation ||
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pDsRole->MachineRole == DsRole_RoleStandaloneServer)
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{
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bStandalone = TRUE;
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}
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else
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bStandalone = FALSE;
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if (pbIsDC)
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{
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if (pDsRole->MachineRole == DsRole_RolePrimaryDomainController ||
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pDsRole->MachineRole == DsRole_RoleBackupDomainController)
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{
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*pbIsDC = TRUE;
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}
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}
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DsRoleFreeMemory(pDsRole);
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}
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return bStandalone;
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}
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void
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ProtectACLs(SECURITY_INFORMATION si, PSECURITY_DESCRIPTOR pSD)
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{
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SECURITY_DESCRIPTOR_CONTROL wSDControl;
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DWORD dwRevision;
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PACL pAcl;
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BOOL bDefaulted;
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BOOL bPresent;
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PACE_HEADER pAce;
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UINT cAces;
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TraceEnter(TRACE_SI, "ProtectACLs");
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if (0 == si || NULL == pSD)
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TraceLeaveVoid(); // Nothing to do
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// Get the ACL protection control bits
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GetSecurityDescriptorControl(pSD, &wSDControl, &dwRevision);
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wSDControl &= SE_DACL_PROTECTED | SE_SACL_PROTECTED;
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if ((si & DACL_SECURITY_INFORMATION) && !(wSDControl & SE_DACL_PROTECTED))
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{
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wSDControl |= SE_DACL_PROTECTED;
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pAcl = NULL;
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GetSecurityDescriptorDacl(pSD, &bPresent, &pAcl, &bDefaulted);
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// Theoretically, modifying the DACL in this way can cause it to be
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// no longer canonical. However, the only way this can happen is if
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// there is an inherited Deny ACE and a non-inherited Allow ACE.
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// Since this function is only called for root objects, this means
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// a) the server DACL must have a Deny ACE and b) the DACL on this
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// object must have been modified later. But if the DACL was
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// modified through the UI, then we would have eliminated all of the
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// Inherited ACEs already. Therefore, it must have been modified
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// through some other means. Considering that the DACL originally
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// inherited from the server never has a Deny ACE, this situation
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// should be extrememly rare. If it ever does happen, the ACL
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// Editor will just tell the user that the DACL is non-canonical.
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//
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// Therefore, let's ignore the possibility here.
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if (NULL != pAcl)
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{
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for (cAces = pAcl->AceCount, pAce = (PACE_HEADER)FirstAce(pAcl);
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cAces > 0;
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--cAces, pAce = (PACE_HEADER)NextAce(pAce))
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{
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pAce->AceFlags &= ~INHERITED_ACE;
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}
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}
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}
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if ((si & SACL_SECURITY_INFORMATION) && !(wSDControl & SE_SACL_PROTECTED))
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{
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wSDControl |= SE_SACL_PROTECTED;
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pAcl = NULL;
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GetSecurityDescriptorSacl(pSD, &bPresent, &pAcl, &bDefaulted);
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if (NULL != pAcl)
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{
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for (cAces = pAcl->AceCount, pAce = (PACE_HEADER)FirstAce(pAcl);
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cAces > 0;
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--cAces, pAce = (PACE_HEADER)NextAce(pAce))
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{
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pAce->AceFlags &= ~INHERITED_ACE;
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}
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}
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}
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SetSecurityDescriptorControl(pSD, SE_DACL_PROTECTED | SE_SACL_PROTECTED, wSDControl);
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TraceLeaveVoid();
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}
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CSecurityInformation::CSecurityInformation(SE_OBJECT_TYPE seType)
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: m_cRef(1), m_seType(seType), m_hwndOwner(NULL),m_ResourceManager(NULL),m_bIsStandAlone(FALSE)
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{
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InterlockedIncrement(&g_cRefThisDll);
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AuthzInitializeResourceManager(0,
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NULL,
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NULL,
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NULL,
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L"Dummy",
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&m_ResourceManager );
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}
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CSecurityInformation::~CSecurityInformation()
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{
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LocalFreeDPA(m_hItemList);
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LocalFreeString(&m_pszObjectName);
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LocalFreeString(&m_pszServerName);
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AuthzFreeResourceManager(m_ResourceManager);
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InterlockedDecrement(&g_cRefThisDll);
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}
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STDMETHODIMP
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CSecurityInformation::Initialize(HDPA hItemList,
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DWORD dwFlags,
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LPTSTR pszServer,
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LPTSTR pszObject)
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{
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TraceEnter(TRACE_SI, "CSecurityInformation::Initialize");
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TraceAssert(hItemList != NULL);
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TraceAssert(DPA_GetPtrCount(hItemList) > 0);
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TraceAssert(pszObject != NULL);
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TraceAssert(m_pszObjectName == NULL); // only initialize once
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m_hItemList = hItemList;
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m_dwSIFlags = dwFlags;
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m_pszServerName = pszServer;
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m_pszObjectName = pszObject;
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m_bIsStandAlone = IsStandalone(pszServer, NULL);
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TraceLeaveResult(S_OK);
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}
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///////////////////////////////////////////////////////////
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//
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// IUnknown methods
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//
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///////////////////////////////////////////////////////////
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STDMETHODIMP_(ULONG)
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CSecurityInformation::AddRef()
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{
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return ++m_cRef;
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}
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STDMETHODIMP_(ULONG)
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CSecurityInformation::Release()
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{
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if (--m_cRef == 0)
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{
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delete this;
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return 0;
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}
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return m_cRef;
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}
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STDMETHODIMP
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CSecurityInformation::QueryInterface(REFIID riid, LPVOID FAR* ppv)
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{
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if (IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_ISecurityInformation))
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{
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*ppv = (LPSECURITYINFO)this;
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m_cRef++;
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return S_OK;
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}
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else if (IsEqualIID(riid, IID_IEffectivePermission))
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{
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*ppv = (LPEFFECTIVEPERMISSION)this;
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m_cRef++;
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return S_OK;
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}
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else if((m_seType != SE_PRINTER) && IsEqualIID(riid, IID_ISecurityObjectTypeInfo))
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{
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*ppv = (LPSecurityObjectTypeInfo)this;
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m_cRef++;
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return S_OK;
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}
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else
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{
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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}
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///////////////////////////////////////////////////////////
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//
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// ISecurityInformation methods
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//
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///////////////////////////////////////////////////////////
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STDMETHODIMP
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CSecurityInformation::GetObjectInformation(PSI_OBJECT_INFO pObjectInfo)
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{
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TraceEnter(TRACE_SI, "CSecurityInformation::GetObjectInformation");
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TraceAssert(pObjectInfo != NULL &&
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!IsBadWritePtr(pObjectInfo, sizeof(*pObjectInfo)));
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pObjectInfo->dwFlags = m_dwSIFlags;
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pObjectInfo->hInstance = g_hInstance;
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pObjectInfo->pszServerName = m_pszServerName;
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pObjectInfo->pszObjectName = m_pszObjectName;
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TraceLeaveResult(S_OK);
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}
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STDMETHODIMP
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CSecurityInformation::GetSecurity(SECURITY_INFORMATION si,
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PSECURITY_DESCRIPTOR *ppSD,
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BOOL fDefault)
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{
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HRESULT hr = S_OK;
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LPTSTR pszItem;
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TraceEnter(TRACE_SI, "CSecurityInformation::GetSecurity");
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TraceAssert(si != 0);
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TraceAssert(ppSD != NULL);
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*ppSD = NULL;
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//Default security descriptor not supported
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if (fDefault)
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ExitGracefully(hr, E_NOTIMPL, "Default security descriptor not supported");
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// Get the name of the first item
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pszItem = (LPTSTR)DPA_GetPtr(m_hItemList, 0);
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if (NULL == pszItem)
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ExitGracefully(hr, E_UNEXPECTED, "CSecurityInformation not initialized");
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hr = ReadObjectSecurity(pszItem, si, ppSD);
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// If this is a Root object, then we pretend that the ACLs are
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// always protected and no ACEs are inherited.
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if (SUCCEEDED(hr) && (m_dwSIFlags & SI_NO_ACL_PROTECT))
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ProtectACLs(si & (DACL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION), *ppSD);
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exit_gracefully:
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TraceLeaveResult(hr);
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}
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STDMETHODIMP
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CSecurityInformation::SetSecurity(SECURITY_INFORMATION si,
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PSECURITY_DESCRIPTOR pSD)
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{
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HRESULT hr = S_OK;
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HCURSOR hcurPrevious = (HCURSOR)INVALID_HANDLE_VALUE;
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UINT cItems;
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int i;
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TraceEnter(TRACE_SI, "CSecurityInformation::SetSecurity");
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TraceAssert(si != 0);
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TraceAssert(pSD != NULL);
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if (NULL == m_hItemList)
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ExitGracefully(hr, E_UNEXPECTED, "CSecurityInformation not initialized");
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hcurPrevious = SetCursor(LoadCursor(NULL, IDC_WAIT));
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//
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// Apply the new permissions to every item in the list
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//
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for (i = 0; i < DPA_GetPtrCount(m_hItemList); i++)
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{
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LPTSTR pszItem = (LPTSTR)DPA_FastGetPtr(m_hItemList, i);
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hr = WriteObjectSecurity(pszItem, si, pSD);
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FailGracefully(hr, "Unable to write new security descriptor");
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if (IsFile()) // If this is a file, delete it's thumbnail from the database, it will get put back if appropriate
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{
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DeleteFileThumbnail(pszItem);
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}
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}
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exit_gracefully:
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// Restore previous cursor
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if (hcurPrevious != INVALID_HANDLE_VALUE)
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SetCursor(hcurPrevious);
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TraceLeaveResult(hr);
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}
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STDMETHODIMP
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CSecurityInformation::PropertySheetPageCallback(HWND hwnd,
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UINT uMsg,
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SI_PAGE_TYPE uPage)
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{
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if (SI_PAGE_PERM == uPage)
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{
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switch (uMsg)
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{
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case PSPCB_SI_INITDIALOG:
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do
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{
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m_hwndOwner = hwnd;
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} while (hwnd = GetParent(hwnd));
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break;
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case PSPCB_RELEASE:
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m_hwndOwner = NULL;
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break;
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}
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}
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return S_OK;
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}
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STDMETHODIMP
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CSecurityInformation::ReadObjectSecurity(LPCTSTR pszObject,
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SECURITY_INFORMATION si,
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PSECURITY_DESCRIPTOR *ppSD)
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{
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DWORD dwErr;
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TraceEnter(TRACE_SI, "CSecurityInformation::ReadObjectSecurity");
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TraceAssert(pszObject != NULL);
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TraceAssert(si != 0);
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TraceAssert(ppSD != NULL);
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//
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// This is kinda screwy. The new APIs are being removed from NT5, but have
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// already been added to NT4 SP4. The old APIs have new functionality on NT5,
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// but not on NT4 SPx. Since we need the new functionality (auto-inheritance),
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// we have to call the new (defunct) API on NT4 and the old API on NT5.
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//
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#if(_WIN32_WINNT >= 0x0500)
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dwErr = GetNamedSecurityInfo((LPTSTR)pszObject,
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m_seType,
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si,
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NULL,
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NULL,
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NULL,
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NULL,
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ppSD);
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#else // _WIN32_WINNT < 0x0500
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PACTRL_ACCESS pAccessList = NULL;
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PACTRL_AUDIT pAuditList = NULL;
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LPTSTR pOwner = NULL;
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LPTSTR pGroup = NULL;
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dwErr = GetNamedSecurityInfoEx(pszObject,
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m_seType,
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si,
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NULL,
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NULL,
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(si & DACL_SECURITY_INFORMATION) ? &pAccessList : NULL,
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(si & SACL_SECURITY_INFORMATION) ? &pAuditList : NULL,
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(si & OWNER_SECURITY_INFORMATION) ? &pOwner : NULL,
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(si & GROUP_SECURITY_INFORMATION) ? &pGroup : NULL);
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if (!dwErr)
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{
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dwErr = ConvertAccessToSecurityDescriptor(pAccessList,
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pAuditList,
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pOwner,
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pGroup,
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ppSD);
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if (pAccessList)
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LocalFree(pAccessList);
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if (pAuditList)
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LocalFree(pAuditList);
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if (pOwner)
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LocalFree(pOwner);
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if (pGroup)
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LocalFree(pGroup);
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}
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#endif // _WIN32_WINNT < 0x0500
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TraceLeaveResult(HRESULT_FROM_WIN32(dwErr));
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}
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STDMETHODIMP
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CSecurityInformation::WriteObjectSecurity(LPCTSTR pszObject,
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SECURITY_INFORMATION si,
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PSECURITY_DESCRIPTOR pSD)
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{
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DWORD dwErr;
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TraceEnter(TRACE_SI, "CSecurityInformation::WriteObjectSecurity");
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TraceAssert(pszObject != NULL);
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TraceAssert(si != 0);
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TraceAssert(pSD != NULL);
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//
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// This is kinda screwy. The new APIs are being removed from NT5, but have
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// already been added to NT4 SP4. The old APIs have new functionality on NT5,
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// but not on NT4 SPx. Since we need the new functionality (auto-inheritance),
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// we have to call the new (defunct) API on NT4 and the old API on NT5.
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//
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#if(_WIN32_WINNT >= 0x0500)
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SECURITY_DESCRIPTOR_CONTROL wSDControl = 0;
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DWORD dwRevision;
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PSID psidOwner = NULL;
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PSID psidGroup = NULL;
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PACL pDacl = NULL;
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PACL pSacl = NULL;
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BOOL bDefaulted;
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BOOL bPresent;
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//
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// Get pointers to various security descriptor parts for
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// calling SetNamedSecurityInfo
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//
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GetSecurityDescriptorControl(pSD, &wSDControl, &dwRevision);
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GetSecurityDescriptorOwner(pSD, &psidOwner, &bDefaulted);
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GetSecurityDescriptorGroup(pSD, &psidGroup, &bDefaulted);
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GetSecurityDescriptorDacl(pSD, &bPresent, &pDacl, &bDefaulted);
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GetSecurityDescriptorSacl(pSD, &bPresent, &pSacl, &bDefaulted);
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if (si & DACL_SECURITY_INFORMATION)
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{
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if (wSDControl & SE_DACL_PROTECTED)
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si |= PROTECTED_DACL_SECURITY_INFORMATION;
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else
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si |= UNPROTECTED_DACL_SECURITY_INFORMATION;
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}
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if (si & SACL_SECURITY_INFORMATION)
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{
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if (wSDControl & SE_SACL_PROTECTED)
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si |= PROTECTED_SACL_SECURITY_INFORMATION;
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else
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si |= UNPROTECTED_SACL_SECURITY_INFORMATION;
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}
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dwErr = SetNamedSecurityInfo((LPTSTR)pszObject,
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m_seType,
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si,
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psidOwner,
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psidGroup,
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pDacl,
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pSacl);
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#else // _WIN32_WINNT < 0x0500
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PACTRL_ACCESS pAccessList = NULL;
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PACTRL_AUDIT pAuditList = NULL;
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LPTSTR pOwner = NULL;
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LPTSTR pGroup = NULL;
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dwErr = ConvertSecurityDescriptorToAccessNamed(pszObject,
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m_seType,
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pSD,
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(si & DACL_SECURITY_INFORMATION) ? &pAccessList : NULL,
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(si & SACL_SECURITY_INFORMATION) ? &pAuditList : NULL,
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(si & OWNER_SECURITY_INFORMATION) ? &pOwner : NULL,
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(si & GROUP_SECURITY_INFORMATION) ? &pGroup : NULL);
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if (!dwErr)
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{
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dwErr = SetNamedSecurityInfoEx(pszObject,
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m_seType,
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si,
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NULL,
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pAccessList,
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pAuditList,
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pOwner,
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pGroup,
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NULL);
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if (pAccessList)
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LocalFree(pAccessList);
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if (pAuditList)
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LocalFree(pAuditList);
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if (pOwner)
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LocalFree(pOwner);
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if (pGroup)
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LocalFree(pGroup);
|
|
}
|
|
#endif // _WIN32_WINNT < 0x0500
|
|
|
|
TraceLeaveResult(HRESULT_FROM_WIN32(dwErr));
|
|
}
|
|
|
|
OBJECT_TYPE_LIST g_DefaultOTL[] = {
|
|
{0, 0, (LPGUID)&GUID_NULL},
|
|
};
|
|
BOOL SkipLocalGroup(LPCWSTR pszServerName, PSID psid)
|
|
{
|
|
|
|
SID_NAME_USE use;
|
|
WCHAR szAccountName[MAX_PATH];
|
|
WCHAR szDomainName[MAX_PATH];
|
|
DWORD dwAccountLen = MAX_PATH;
|
|
DWORD dwDomainLen = MAX_PATH;
|
|
|
|
if(LookupAccountSid(pszServerName,
|
|
psid,
|
|
szAccountName,
|
|
&dwAccountLen,
|
|
szDomainName,
|
|
&dwDomainLen,
|
|
&use))
|
|
{
|
|
if(use == SidTypeWellKnownGroup)
|
|
return TRUE;
|
|
}
|
|
|
|
//Built In sids have first subauthority of 32 ( s-1-5-32 )
|
|
//
|
|
if((*(GetSidSubAuthorityCount(psid)) >= 1 ) && (*(GetSidSubAuthority(psid,0)) == 32))
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
STDMETHODIMP
|
|
CSecurityInformation::GetEffectivePermission(const GUID* pguidObjectType,
|
|
PSID pUserSid,
|
|
LPCWSTR pszServerName,
|
|
PSECURITY_DESCRIPTOR pSD,
|
|
POBJECT_TYPE_LIST *ppObjectTypeList,
|
|
ULONG *pcObjectTypeListLength,
|
|
PACCESS_MASK *ppGrantedAccessList,
|
|
ULONG *pcGrantedAccessListLength)
|
|
{
|
|
|
|
AUTHZ_RESOURCE_MANAGER_HANDLE RM = NULL; //Used for access check
|
|
AUTHZ_CLIENT_CONTEXT_HANDLE CC = NULL;
|
|
LUID luid = {0xdead,0xbeef};
|
|
AUTHZ_ACCESS_REQUEST AReq;
|
|
AUTHZ_ACCESS_REPLY AReply;
|
|
HRESULT hr = S_OK;
|
|
DWORD dwFlags;
|
|
|
|
TraceEnter(TRACE_SI, "CDSSecurityInfo::GetEffectivePermission");
|
|
TraceAssert(pUserSid && IsValidSecurityDescriptor(pSD));
|
|
TraceAssert(ppObjectTypeList != NULL);
|
|
TraceAssert(pcObjectTypeListLength != NULL);
|
|
TraceAssert(ppGrantedAccessList != NULL);
|
|
TraceAssert(pcGrantedAccessListLength != NULL);
|
|
|
|
AReq.ObjectTypeList = g_DefaultOTL;
|
|
AReq.ObjectTypeListLength = ARRAYSIZE(g_DefaultOTL);
|
|
AReply.GrantedAccessMask = NULL;
|
|
AReply.Error = NULL;
|
|
|
|
//Get RM
|
|
if( (RM = GetAUTHZ_RM()) == NULL )
|
|
ExitGracefully(hr, E_UNEXPECTED, "LocalAlloc failed");
|
|
|
|
//Initialize the client context
|
|
|
|
BOOL bSkipLocalGroup = SkipLocalGroup(pszServerName, pUserSid);
|
|
|
|
if( !AuthzInitializeContextFromSid((m_bIsStandAlone||bSkipLocalGroup)? AUTHZ_SKIP_TOKEN_GROUPS :0,
|
|
pUserSid,
|
|
RM,
|
|
NULL,
|
|
luid,
|
|
NULL,
|
|
&CC) )
|
|
{
|
|
DWORD dwErr = GetLastError();
|
|
ExitGracefully(hr,
|
|
HRESULT_FROM_WIN32(dwErr),
|
|
"AuthzInitializeContextFromSid Failed");
|
|
}
|
|
|
|
|
|
|
|
//Do the Access Check
|
|
|
|
AReq.DesiredAccess = MAXIMUM_ALLOWED;
|
|
AReq.PrincipalSelfSid = NULL;
|
|
AReq.OptionalArguments = NULL;
|
|
|
|
AReply.ResultListLength = AReq.ObjectTypeListLength;
|
|
AReply.SaclEvaluationResults = NULL;
|
|
if( (AReply.GrantedAccessMask = (PACCESS_MASK)LocalAlloc(LPTR, sizeof(ACCESS_MASK)*AReply.ResultListLength) ) == NULL )
|
|
ExitGracefully(hr, E_OUTOFMEMORY, "Unable to LocalAlloc");
|
|
if( (AReply.Error = (PDWORD)LocalAlloc(LPTR, sizeof(DWORD)*AReply.ResultListLength)) == NULL )
|
|
ExitGracefully(hr, E_OUTOFMEMORY, "Unable to LocalAlloc");
|
|
|
|
if( !AuthzAccessCheck(0,
|
|
CC,
|
|
&AReq,
|
|
NULL,
|
|
pSD,
|
|
NULL,
|
|
0,
|
|
&AReply,
|
|
NULL) )
|
|
{
|
|
DWORD dwErr = GetLastError();
|
|
ExitGracefully(hr,
|
|
HRESULT_FROM_WIN32(dwErr),
|
|
"AuthzAccessCheck Failed");
|
|
}
|
|
|
|
exit_gracefully:
|
|
|
|
if(CC)
|
|
AuthzFreeContext(CC);
|
|
|
|
if(!SUCCEEDED(hr))
|
|
{
|
|
if(AReply.GrantedAccessMask)
|
|
LocalFree(AReply.GrantedAccessMask);
|
|
if(AReply.Error)
|
|
LocalFree(AReply.Error);
|
|
AReply.Error = NULL;
|
|
AReply.GrantedAccessMask = NULL;
|
|
}
|
|
else
|
|
{
|
|
*ppObjectTypeList = AReq.ObjectTypeList;
|
|
*pcObjectTypeListLength = AReq.ObjectTypeListLength;
|
|
*ppGrantedAccessList = AReply.GrantedAccessMask;
|
|
*pcGrantedAccessListLength = AReq.ObjectTypeListLength;
|
|
}
|
|
|
|
TraceLeaveResult(hr);
|
|
}
|
|
|