Source code of Windows XP (NT5)
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//+---------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1993 - 1997.
//
// File: virtreg.cpp
//
// Contents: Implements the class CVirtualRegistry which manages a
// virtual registry
//
// Classes:
//
// Methods: CVirtualRegistry::CVirtualRegistry
// CVirtualRegistry::~CVirtualRegistry
// CVirtualRegistry::ReadRegSzNamedValue
// CVirtualRegistry::NewRegSzNamedValue
// CVirtualRegistry::ChgRegSzNamedValue
// CVirtualRegistry::ReadRegDwordNamedValue
// CVirtualRegistry::NewRegDwordNamedValue
// CVirtualRegistry::ChgRegDwordNamedValue
// CVirtualRegistry::NewRegSingleACL
// CVirtualRegistry::ChgRegACL
// CVirtualRegistry::NewRegKeyACL
// CVirtualRegistry::ReadLsaPassword
// CVirtualRegistry::NewLsaPassword
// CVirtualRegistry::ChgLsaPassword
// CVirtualRegistry::ReadSrvIdentity
// CVirtualRegistry::NewSrvIdentity
// CVirtualRegistry::ChgSrvIdentity
// CVirtualRegistry::MarkForDeletion
// CVirtualRegistry::GetAt
// CVirtualRegistry::Remove
// CVirtualRegistry::Cancel
// CVirtualRegistry::Apply
// CVirtualRegistry::ApplyAll
// CVirtualRegistry::Ok
// CVirtualRegistry::SearchForRegEntry
// CVirtualRegistry::SearchForLsaEntry
// CVirtualRegistry::SearchForSrvEntry
//
// History: 23-Apr-96 BruceMa Created.
// 15-Dec-96 RonanS Tidied up to remove memory leaks
// Use array of pointers to avoid bitwise copy
//
//----------------------------------------------------------------------
#include "stdafx.h"
#include "afxtempl.h"
#include "assert.h"
#if !defined(STANDALONE_BUILD)
extern "C"
{
#include "ntlsa.h"
}
#endif
#include "winsvc.h"
#include "types.h"
#include "datapkt.h"
#if !defined(STANDALONE_BUILD)
extern "C"
{
#include <getuser.h>
}
#endif
#include "util.h"
#include "virtreg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
CVirtualRegistry::CVirtualRegistry(void)
{
m_pkts.SetSize(0, 8);
}
CVirtualRegistry::~CVirtualRegistry(void)
{
// ronans - remove any remaining items
RemoveAll();
}
// Read a named string value from the registry and cache it
int CVirtualRegistry::ReadRegSzNamedValue(HKEY hRoot,
TCHAR *szKeyPath,
TCHAR *szValueName,
int *pIndex)
{
int err;
HKEY hKey;
ULONG lSize;
DWORD dwType;
TCHAR szVal[MAX_PATH];
// Check if we already have an entry for this
*pIndex = SearchForRegEntry(hRoot, szKeyPath, szValueName);
if (*pIndex >= 0)
{
CDataPacket * pCdp = GetAt(*pIndex);
ASSERT(pCdp); // should always be non null
if (pCdp->IsDeleted())
{
*pIndex = -1;
return ERROR_FILE_NOT_FOUND;
}
else
return ERROR_SUCCESS;
}
// Open the referenced key
if ((err = RegOpenKeyEx(hRoot, szKeyPath, 0, KEY_ALL_ACCESS, &hKey)) != ERROR_SUCCESS)
{
g_util.CkForAccessDenied(err);
return err;
}
// Attempt to read the named value
lSize = MAX_PATH * sizeof(TCHAR);
if ((err = RegQueryValueEx(hKey, szValueName, NULL, &dwType, (BYTE *) szVal,
&lSize))
!= ERROR_SUCCESS)
{
g_util.CkForAccessDenied(err);
if (hKey != hRoot)
RegCloseKey(hKey);
return err;
}
// Build a data packet
if (dwType == REG_SZ)
{
CDataPacket * pNewPacket = new CRegSzNamedValueDp(hRoot, szKeyPath, szValueName, szVal);
ASSERT(pNewPacket);
if (!pNewPacket)
{
return ERROR_NOT_ENOUGH_MEMORY;
}
*pIndex = (int)m_pkts.Add(pNewPacket);
pNewPacket->SetModified( FALSE);
return ERROR_SUCCESS;
}
else
return ERROR_BAD_TOKEN_TYPE;
}
// Read a named string value from the registry and cache it
int CVirtualRegistry::ReadRegMultiSzNamedValue(HKEY hRoot,
TCHAR *szKeyPath,
TCHAR *szValueName,
int *pIndex)
{
int err = ERROR_SUCCESS;
HKEY hKey;
// Check if we already have an entry for this
*pIndex = SearchForRegEntry(hRoot, szKeyPath, szValueName);
if (*pIndex >= 0)
{
CDataPacket * pCdp = GetAt(*pIndex);
ASSERT(pCdp); // should always be non null
if (pCdp->IsDeleted())
{
*pIndex = -1;
return ERROR_FILE_NOT_FOUND;
}
else
return err;
}
// Open the referenced key
if ((err = RegOpenKeyEx(hRoot, szKeyPath, 0, KEY_ALL_ACCESS, &hKey)) == ERROR_SUCCESS)
{
// Build a data packet
CRegMultiSzNamedValueDp * pNewPacket = new CRegMultiSzNamedValueDp(hRoot, szKeyPath, szValueName);
ASSERT(pNewPacket);
if (pNewPacket)
{
// read the key
if ((err = pNewPacket -> Read(hKey)) == ERROR_SUCCESS)
{
*pIndex = (int)m_pkts.Add(pNewPacket);
pNewPacket->SetModified( FALSE);
}
else
{
g_util.CkForAccessDenied(err);
delete pNewPacket;
if (hKey != hRoot)
RegCloseKey(hKey);
}
}
else
err = ERROR_NOT_ENOUGH_MEMORY;
if (err != ERROR_SUCCESS)
g_util.CkForAccessDenied(err);
}
return err;
}
int CVirtualRegistry::NewRegSzNamedValue(HKEY hRoot,
TCHAR *szKeyPath,
TCHAR *szValueName,
TCHAR *szVal,
int *pIndex)
{
// It may be in the virtual registry but marked for deletion
*pIndex = SearchForRegEntry(hRoot, szKeyPath, szValueName);
if (*pIndex >= 0)
{
CRegSzNamedValueDp * pCdp = (CRegSzNamedValueDp *)GetAt(*pIndex);
pCdp->MarkForDeletion(FALSE);
pCdp->ChgSzValue(szVal);
return ERROR_SUCCESS;
}
// Build a data packet and add it
CRegSzNamedValueDp * pNewPacket = new CRegSzNamedValueDp (hRoot, szKeyPath, szValueName, szVal);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
*pIndex = (int)m_pkts.Add(pNewPacket);
return ERROR_SUCCESS;
}
int CVirtualRegistry::NewRegMultiSzNamedValue(HKEY hRoot,
TCHAR *szKeyPath,
TCHAR *szValueName,
int *pIndex)
{
// It may be in the virtual registry but marked for deletion
*pIndex = SearchForRegEntry(hRoot, szKeyPath, szValueName);
if (*pIndex >= 0)
{
CRegMultiSzNamedValueDp * pCdp = (CRegMultiSzNamedValueDp *)GetAt(*pIndex);
pCdp->MarkForDeletion(FALSE);
pCdp->Clear();
pCdp -> SetModified(TRUE);
return ERROR_SUCCESS;
}
// Build a data packet and add it
CRegMultiSzNamedValueDp * pNewPacket = new CRegMultiSzNamedValueDp (hRoot, szKeyPath, szValueName);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
pNewPacket -> SetModified(TRUE);
*pIndex = (int)m_pkts.Add(pNewPacket);
return ERROR_SUCCESS;
}
void CVirtualRegistry::ChgRegSzNamedValue(int nIndex, TCHAR *szVal)
{
CRegSzNamedValueDp* pCdp = (CRegSzNamedValueDp*)m_pkts.ElementAt(nIndex);
pCdp->ChgSzValue(szVal);
}
// Read a named DWORD value from the registry
int CVirtualRegistry::ReadRegDwordNamedValue(HKEY hRoot,
TCHAR *szKeyPath,
TCHAR *szValueName,
int *pIndex)
{
int err;
HKEY hKey;
ULONG lSize;
DWORD dwType;
DWORD dwVal;
// Check if we already have an entry for this
*pIndex = SearchForRegEntry(hRoot, szKeyPath, szValueName);
if (*pIndex >= 0)
{
return ERROR_SUCCESS;
}
// Open the referenced key
if ((err = RegOpenKeyEx(hRoot, szKeyPath, 0, KEY_ALL_ACCESS, &hKey)) != ERROR_SUCCESS)
{
g_util.CkForAccessDenied(err);
return err;
}
// Attempt to read the named value
lSize = sizeof(DWORD);
if ((err = RegQueryValueEx(hKey, szValueName, NULL, &dwType, (BYTE *) &dwVal,
&lSize))
!= ERROR_SUCCESS)
{
g_util.CkForAccessDenied(err);
if (hKey != hRoot)
{
RegCloseKey(hKey);
}
return err;
}
// Close the registry key
if (hKey != hRoot)
{
RegCloseKey(hKey);
}
// Build a data packet
if (dwType == REG_DWORD)
{
CDataPacket * pNewPacket = new CDataPacket(hRoot, szKeyPath, szValueName, dwVal);
ASSERT(pNewPacket);
if (!pNewPacket)
{
return ERROR_NOT_ENOUGH_MEMORY;
}
*pIndex = (int)m_pkts.Add(pNewPacket);
pNewPacket-> SetModified(FALSE);
return ERROR_SUCCESS;
}
else
{
return ERROR_BAD_TOKEN_TYPE;
}
}
int CVirtualRegistry::NewRegDwordNamedValue(HKEY hRoot,
TCHAR *szKeyPath,
TCHAR *szValueName,
DWORD dwVal,
int *pIndex)
{
// It may be in the virtual registry but marked for deletion
*pIndex = SearchForRegEntry(hRoot, szKeyPath, szValueName);
if (*pIndex >= 0)
{
CDataPacket * pCdp = GetAt(*pIndex);
pCdp->MarkForDeletion(FALSE);
pCdp->pkt.nvdw.dwValue = dwVal;
pCdp->SetModified(TRUE);
return ERROR_SUCCESS;
}
// Build a data packet and add it
CDataPacket * pNewPacket = new CDataPacket(hRoot, szKeyPath, szValueName, dwVal);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
*pIndex = (int)m_pkts.Add(pNewPacket);
pNewPacket->SetModified(TRUE);
return ERROR_SUCCESS;
}
void CVirtualRegistry::ChgRegDwordNamedValue(int nIndex, DWORD dwVal)
{
CDataPacket * pCdp = m_pkts.ElementAt(nIndex);
pCdp->pkt.nvdw.dwValue = dwVal;
pCdp->SetModified( TRUE);
}
int CVirtualRegistry::NewRegSingleACL(HKEY hRoot,
TCHAR *szKeyPath,
TCHAR *szValueName,
SECURITY_DESCRIPTOR *pacl,
BOOL fSelfRelative,
int *pIndex)
{
// Build a data packet and add it
CDataPacket * pNewPacket = new CDataPacket(hRoot, szKeyPath, szValueName, pacl, fSelfRelative);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
*pIndex = (int)m_pkts.Add(pNewPacket);
return ERROR_SUCCESS;
}
void CVirtualRegistry::ChgRegACL(int nIndex,
SECURITY_DESCRIPTOR *pacl,
BOOL fSelfRelative)
{
CDataPacket * pCdp = m_pkts.ElementAt(nIndex);
pCdp->ChgACL(pacl, fSelfRelative);
pCdp->SetModified(TRUE);
}
int CVirtualRegistry::NewRegKeyACL(HKEY hKey,
HKEY *phClsids,
unsigned cClsids,
TCHAR *szTitle,
SECURITY_DESCRIPTOR *paclOrig,
SECURITY_DESCRIPTOR *pacl,
BOOL fSelfRelative,
int *pIndex)
{
// Build a data packet and add it
CDataPacket * pNewPacket = new CDataPacket(hKey, phClsids, cClsids, szTitle, paclOrig, pacl, fSelfRelative);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
*pIndex = (int)m_pkts.Add(pNewPacket);
return ERROR_SUCCESS;
}
int CVirtualRegistry::ReadLsaPassword(CLSID &clsid,
int *pIndex)
{
#if !defined(STANDALONE_BUILD)
LSA_OBJECT_ATTRIBUTES sObjAttributes;
HANDLE hPolicy = NULL;
LSA_UNICODE_STRING sKey;
TCHAR szKey[GUIDSTR_MAX + 5];
PLSA_UNICODE_STRING psPassword;
// Check if we already have an entry fo this
*pIndex = SearchForLsaEntry(clsid);
if (*pIndex >= 0)
{
return ERROR_SUCCESS;
}
// Formulate the access key
lstrcpyW(szKey, L"SCM:");
g_util.StringFromGUID(clsid, &szKey[4], GUIDSTR_MAX);
szKey[GUIDSTR_MAX + 4] = L'\0';
// UNICODE_STRING length fields are in bytes and include the NULL
// terminator
sKey.Length = (USHORT)((lstrlenW(szKey) + 1) * sizeof(WCHAR));
sKey.MaximumLength = (GUIDSTR_MAX + 5) * sizeof(WCHAR);
sKey.Buffer = szKey;
// Open the local security policy
InitializeObjectAttributes(&sObjAttributes, NULL, 0L, NULL, NULL);
if (!NT_SUCCESS(LsaOpenPolicy(NULL, &sObjAttributes,
POLICY_GET_PRIVATE_INFORMATION, &hPolicy)))
{
return GetLastError();
}
// Read the user's password
if (!NT_SUCCESS(LsaRetrievePrivateData(hPolicy, &sKey, &psPassword)))
{
LsaClose(hPolicy);
return GetLastError();
}
// Close the policy handle, we're done with it now.
LsaClose(hPolicy);
// Build a data packet
CDataPacket * pNewPacket = new CDataPacket(psPassword->Buffer, clsid);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
pNewPacket->SetModified( FALSE );
*pIndex = (int)m_pkts.Add(pNewPacket);
#endif
return ERROR_SUCCESS;
}
int CVirtualRegistry::NewLsaPassword(CLSID &clsid,
TCHAR *szPassword,
int *pIndex)
{
// Build a data packet and add it
CDataPacket * pNewPacket = new CDataPacket(szPassword, clsid);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
*pIndex = (int)m_pkts.Add(pNewPacket);
return ERROR_SUCCESS;
}
void CVirtualRegistry::ChgLsaPassword(int nIndex,
TCHAR *szPassword)
{
CDataPacket * pCdp = m_pkts.ElementAt(nIndex);
pCdp -> ChgPassword(szPassword);
pCdp -> SetModified(TRUE);
}
int CVirtualRegistry::ReadSrvIdentity(TCHAR *szService,
int *pIndex)
{
SC_HANDLE hSCManager;
SC_HANDLE hService;
QUERY_SERVICE_CONFIG sServiceQueryConfig;
DWORD dwSize;
// Check if we already have an entry fo this
*pIndex = SearchForSrvEntry(szService);
if (*pIndex >= 0)
{
return ERROR_SUCCESS;
}
// Open the service control manager
if (hSCManager = OpenSCManager(NULL, NULL, GENERIC_READ))
{
// Open a handle to the requested service
if (hService = OpenService(hSCManager, szService, GENERIC_READ))
{
// Close the service manager's database
CloseServiceHandle(hSCManager);
// Query the service
if (QueryServiceConfig(hService, &sServiceQueryConfig,
sizeof(QUERY_SERVICE_CONFIG), &dwSize))
{
// Build a data packet
CDataPacket * pNewPacket = new CDataPacket(szService, sServiceQueryConfig.lpServiceStartName);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
pNewPacket->SetModified(FALSE);
*pIndex = (int)m_pkts.Add(pNewPacket);
// Return success
CloseServiceHandle(hSCManager);
CloseServiceHandle(hService);
return ERROR_SUCCESS;
}
}
CloseServiceHandle(hSCManager);
}
return GetLastError();
}
int CVirtualRegistry::NewSrvIdentity(TCHAR *szService,
TCHAR *szIdentity,
int *pIndex)
{
// Build a data packet and add it
CDataPacket * pNewPacket = new CDataPacket(szService, szIdentity);
ASSERT(pNewPacket);
if (!pNewPacket)
return ERROR_NOT_ENOUGH_MEMORY;
*pIndex = (int)m_pkts.Add(pNewPacket);
return ERROR_SUCCESS;
}
void CVirtualRegistry::ChgSrvIdentity(int nIndex,
TCHAR *szIdentity)
{
CDataPacket *pCdp = m_pkts.ElementAt(nIndex);
pCdp -> ChgSrvIdentity(szIdentity);
pCdp -> SetModified( TRUE);
}
void CVirtualRegistry::MarkForDeletion(int nIndex)
{
CDataPacket * pCdp = GetAt(nIndex);
pCdp->MarkForDeletion(TRUE);
pCdp->SetModified(TRUE);
}
void CVirtualRegistry::MarkHiveForDeletion(int nIndex)
{
CDataPacket * pCdp = GetAt(nIndex);
pCdp->MarkHiveForDeletion(TRUE);
pCdp->SetModified(TRUE);
}
CDataPacket * CVirtualRegistry::GetAt(int nIndex)
{
return m_pkts.ElementAt(nIndex);
}
void CVirtualRegistry::Remove(int nIndex)
{
CDataPacket * pCdp = GetAt(nIndex);
// ronans - must always destroy even if packet has not been marked dirty
if (pCdp)
delete pCdp;
// overwrite with empty data packet
m_pkts.SetAt(nIndex, new CDataPacket);
}
void CVirtualRegistry::RemoveAll(void)
{
int nSize = (int)m_pkts.GetSize();
for (int k = 0; k < nSize; k++)
{
Remove(k);
CDataPacket * pCdp = GetAt(k);
// remove empty packet
if (pCdp)
delete pCdp;
}
m_pkts.RemoveAll();
}
void CVirtualRegistry::Cancel(int nIndex)
{
int nSize = (int)m_pkts.GetSize();
for (int k = nIndex; k < nSize; k++)
{
m_pkts.SetAt(nIndex, new CDataPacket);
}
}
int CVirtualRegistry::Apply(int nIndex)
{
int err = ERROR_SUCCESS;
int nSize = (int)m_pkts.GetSize();
CDataPacket *pCdp = m_pkts.ElementAt(nIndex);
if (pCdp->IsModified())
err = pCdp -> Apply();
return err;;
}
int CVirtualRegistry::ApplyAll(void)
{
int nSize = (int)m_pkts.GetSize();
// Persist all non-empty data packets
for (int k = 0; k < nSize; k++)
{
Apply(k);
}
return ERROR_SUCCESS;
}
int CVirtualRegistry::Ok(int nIndex)
{
return 0;
}
int CVirtualRegistry::SearchForRegEntry(HKEY hRoot,
TCHAR *szKeyPath,
TCHAR *szValueName)
{
int nSize = (int)m_pkts.GetSize();
for (int k = 0; k < nSize; k++)
{
CDataPacket * pCdp = GetAt(k);
if (pCdp -> IsIdentifiedBy(hRoot, szKeyPath, szValueName))
return k;
}
return -1;
}
int CVirtualRegistry::SearchForLsaEntry(CLSID appid)
{
int nSize = (int)m_pkts.GetSize();
for (int k = 0; k < nSize; k++)
{
CDataPacket * pCdp = GetAt(k);
if (pCdp->m_tagType == Password &&
g_util.IsEqualGuid(pCdp->pkt.pw.appid, appid))
{
return k;
}
}
return -1;
}
int CVirtualRegistry::SearchForSrvEntry(TCHAR *szServiceName)
{
int nSize = (int)m_pkts.GetSize();
for (int k = 0; k < nSize; k++)
{
CDataPacket * pCdp = GetAt(k);
if (pCdp->m_tagType == ServiceIdentity &&
(_tcscmp(pCdp->pkt.si.szServiceName, szServiceName)))
{
return k;
}
}
return -1;
}