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641 lines
16 KiB
C++
641 lines
16 KiB
C++
/* $Id: RegistryTree.cpp,v 1.6 2001/04/24 22:32:31 narnaoud Exp $
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*
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* regexpl - Console Registry Explorer
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*
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* Copyright (C) 2000,2001 Nedko Arnaoudov <nedkohome@atia.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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// RegistryTree.cpp: implementation of the CRegistryTree class.
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#include "ph.h"
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#include "RegistryTree.h"
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#include "Pattern.h"
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#include "RegistryExplorer.h"
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CRegistryTree::CRegistryTree()
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{
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m_pszMachineName = NULL;
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VERIFY(SUCCEEDED(m_Root.m_Key.InitRoot()));
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m_Root.m_pUp = NULL;
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m_pCurrentKey = &m_Root;
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ASSERT(m_pCurrentKey->m_Key.IsRoot());
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m_ErrorMsg[ERROR_MSG_BUFFER_SIZE] = 0;
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}
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CRegistryTree::CRegistryTree(const CRegistryTree& Tree)
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{
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m_pszMachineName = NULL;
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VERIFY(SUCCEEDED(m_Root.m_Key.InitRoot()));
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m_Root.m_pUp = NULL;
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m_pCurrentKey = &m_Root;
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ASSERT(m_pCurrentKey->m_Key.IsRoot());
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const TCHAR *pszPath = Tree.GetCurrentPath();
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if ((pszPath[0] == _T('\\')) && (pszPath[1] == _T('\\')))
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{ // path has machine name
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pszPath += 2;
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while (*pszPath && (*pszPath != _T('\\')))
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pszPath++;
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ASSERT(*pszPath == _T('\\')); // if path begins with \\ it must be followed by machine name
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}
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if (Tree.m_pszMachineName)
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SetMachineName(Tree.m_pszMachineName);
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VERIFY(ChangeCurrentKey(pszPath));
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}
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CRegistryTree::~CRegistryTree()
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{
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if (m_pszMachineName)
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delete m_pszMachineName;
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CNode *pNode;
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while(m_pCurrentKey->m_pUp)
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{
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pNode = m_pCurrentKey;
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m_pCurrentKey = m_pCurrentKey->m_pUp;
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delete pNode;
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}
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// We are on root
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ASSERT(m_pCurrentKey->m_Key.IsRoot());
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ASSERT(m_pCurrentKey == &m_Root);
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}
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const TCHAR * CRegistryTree::GetCurrentPath() const
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{
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return m_pCurrentKey->m_Key.GetKeyName();
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}
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BOOL CRegistryTree::IsCurrentRoot()
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{
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return m_pCurrentKey->m_Key.IsRoot();
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}
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BOOL CRegistryTree::ChangeCurrentKey(const TCHAR *pszRelativePath)
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{
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if (*pszRelativePath == _T('\\'))
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GotoRoot(); // This is full absolute path.
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// split path to key names.
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TCHAR *pszSeps = _T("\\");
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// Make buffer and copy relative path into it.
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TCHAR *pszBuffer = new TCHAR[_tcslen(pszRelativePath)+1];
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if (!pszBuffer)
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{
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SetError(ERROR_OUTOFMEMORY);
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return FALSE;
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}
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_tcscpy(pszBuffer,pszRelativePath);
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// We accept names in form "\"blablabla\\blab labla\"\\"
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size_t size = _tcslen(pszBuffer);
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if (size)
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{
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if (pszBuffer[size-1] == _T('\\'))
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pszBuffer[--size] = 0;
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TCHAR *psz;
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if (*pszBuffer == _T('\"') && (psz = _tcschr(pszBuffer+1,_T('\"'))) && size_t(psz-pszBuffer) == size-1)
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{
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size--;
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pszBuffer[size] = 0;
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pszBuffer++;
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}
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}
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TCHAR *pszNewKey = _tcstok(pszBuffer,pszSeps);
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if ((!pszNewKey)&&((*pszRelativePath != _T('\\'))||(*(pszRelativePath+1) != 0)))
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{
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SetError(_T("Invalid key name"));
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goto Abort;
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};
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// change keys
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while (pszNewKey)
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{
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if (!InternalChangeCurrentKey(pszNewKey,KEY_READ))
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goto Abort; // InternalChangeCurrentKey sets last error description
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// Get next key name
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pszNewKey = _tcstok(NULL,pszSeps);
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}
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return TRUE;
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Abort:
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delete pszBuffer;
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return FALSE;
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}
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const TCHAR * CRegistryTree::GetLastErrorDescription()
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{
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return m_ErrorMsg;
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}
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void CRegistryTree::GotoRoot()
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{
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// Delete current tree
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CNode *pNode;
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while(m_pCurrentKey->m_pUp)
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{
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pNode = m_pCurrentKey;
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m_pCurrentKey = m_pCurrentKey->m_pUp;
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delete pNode;
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}
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// We are on root
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ASSERT(m_pCurrentKey->m_Key.IsRoot());
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ASSERT(m_pCurrentKey == &m_Root);
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}
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BOOL CRegistryTree::SetMachineName(LPCTSTR pszMachineName)
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{
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GotoRoot();
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// If we are going to local machine...
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if (pszMachineName == NULL)
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{
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// Delete previous machine name buffer if allocated.
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if (m_pszMachineName)
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delete m_pszMachineName;
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m_pszMachineName = NULL;
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m_Root.m_Key.InitRoot();
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return TRUE;
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}
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// Skip leading backslashes if any.
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while ((*pszMachineName)&&(*pszMachineName == _T('\\')))
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pszMachineName++;
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ASSERT(*pszMachineName); // No machine name.
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TCHAR *pszNewMachineName = new TCHAR[_tcslen(pszMachineName)+3]; // two leading backslashes + terminating null
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if (!pszMachineName)
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{
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SetError(ERROR_OUTOFMEMORY);
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return FALSE;
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}
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// Delete previous machine name buffer if allocated.
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if (m_pszMachineName)
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delete m_pszMachineName;
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m_pszMachineName = pszNewMachineName;
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_tcscpy(m_pszMachineName,_T("\\\\")); // leading backslashes
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_tcscpy(m_pszMachineName+2,pszMachineName); // machine name itself
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_tcsupr(m_pszMachineName+2); // upercase it
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VERIFY(SUCCEEDED(m_Root.m_Key.InitRoot(m_pszMachineName)));
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return TRUE;
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}
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BOOL CRegistryTree::NewKey(const TCHAR *pszKeyName, const TCHAR *pszPath, BOOL blnVolatile)
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{
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if (!m_pCurrentKey)
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{
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SetErrorCommandNAOnRoot(_T("Creating new key "));
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return FALSE;
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}
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CRegistryTree Tree(*this);
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if (!Tree.ChangeCurrentKey(pszPath))
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{
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SetError(Tree.GetLastErrorDescription());
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return FALSE;
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}
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BOOL blnOpened;
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HKEY hKey;
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LONG nError = Tree.m_pCurrentKey->m_Key.CreateSubkey(KEY_READ,
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pszKeyName,
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hKey,
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&blnOpened,
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blnVolatile);
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if (nError == ERROR_SUCCESS)
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{
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LONG nError = RegCloseKey(hKey);
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ASSERT(nError == ERROR_SUCCESS);
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}
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if ((nError == ERROR_SUCCESS) && blnOpened)
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{
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SetError(_T("A key \"%s\" already exists."),pszKeyName);
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return FALSE;
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}
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if (nError != ERROR_SUCCESS)
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{
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SetError(_T("Cannot create key : %s%s\nError %d (%s)\n"),
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GetCurrentPath(),pszKeyName,nError,GetErrorDescription(nError));
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return FALSE;
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}
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return TRUE;
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}
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BOOL CRegistryTree::DeleteSubkeys(const TCHAR *pszKeyPattern, const TCHAR *pszPath, BOOL blnRecursive)
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{
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CRegistryKey Key;
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if (!GetKey(pszPath,KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS|DELETE,Key))
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return FALSE;
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return DeleteSubkeys(Key, pszKeyPattern, blnRecursive);
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}
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BOOL CRegistryTree::DeleteSubkeys(CRegistryKey& rKey, const TCHAR *pszKeyPattern, BOOL blnRecursive)
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{
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LONG nError;
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// enumerate subkeys
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DWORD dwMaxSubkeyNameLength;
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nError = rKey.GetSubkeyNameMaxLength(dwMaxSubkeyNameLength);
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if (nError != ERROR_SUCCESS)
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{
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SetError(_T("Cannot delete subkeys(s) of key %s.\nRequesting info about key failed.\nError %d (%s)\n"),
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rKey.GetKeyName(),nError,GetErrorDescription(nError));
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return FALSE;
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}
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TCHAR *pszSubkeyName = new TCHAR [dwMaxSubkeyNameLength];
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rKey.InitSubkeyEnumeration(pszSubkeyName, dwMaxSubkeyNameLength);
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BOOL blnKeyDeleted = FALSE;
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while ((nError = rKey.GetNextSubkeyName()) == ERROR_SUCCESS)
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{
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if (PatternMatch(pszKeyPattern,pszSubkeyName))
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{
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if (blnRecursive)
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{ // deltion is recursive, delete subkey subkeys
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CRegistryKey Subkey;
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// open subkey
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nError = rKey.OpenSubkey(DELETE,pszSubkeyName,Subkey);
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// delete subkey subkeys
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if (DeleteSubkeys(Subkey, PATTERN_MATCH_ALL, TRUE))
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{
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AddErrorDescription(_T("Cannot delete subkey(s) of key %s. Subkey deletion failed.\n"),Subkey.GetKeyName());
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return FALSE;
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}
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}
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nError = rKey.DeleteSubkey(pszSubkeyName);
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if (nError != ERROR_SUCCESS)
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{
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SetError(_T("Cannot delete the %s subkey of key %s.\nError %d (%s)\n"),
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pszSubkeyName,rKey.GetKeyName(),nError,GetErrorDescription(nError));
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return FALSE;
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}
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blnKeyDeleted = TRUE;
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rKey.InitSubkeyEnumeration(pszSubkeyName, dwMaxSubkeyNameLength); // reset iteration
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}
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}
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ASSERT(nError != ERROR_SUCCESS);
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if (nError != ERROR_NO_MORE_ITEMS)
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{
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SetError(_T("Cannot delete subkeys(s) of key %s.\nSubkey enumeration failed.\nError %d (%s)\n"),
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rKey.GetKeyName(),nError,GetErrorDescription(nError));
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return FALSE;
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}
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if (!blnKeyDeleted)
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SetError(_T("The key %s has no subkeys that match %s pattern.\n"),rKey.GetKeyName(),pszKeyPattern);
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return blnKeyDeleted;
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}
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const TCHAR * CRegistryTree::GetErrorDescription(LONG nError)
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{
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switch(nError)
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{
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case ERROR_ACCESS_DENIED:
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return _T("Access denied");
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case ERROR_FILE_NOT_FOUND:
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return _T("The system cannot find the key specified");
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case ERROR_INTERNAL_ERROR:
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return _T("Internal error");
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case ERROR_OUTOFMEMORY:
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return _T("Out of memory");
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default:
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return _T("Unknown error");
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}
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}
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void CRegistryTree::SetError(LONG nError)
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{
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SetError(_T("Error %u (%s)"),nError,GetErrorDescription(nError));
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}
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void CRegistryTree::SetError(const TCHAR *pszFormat, ...)
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{
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va_list args;
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va_start(args,pszFormat);
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if (_vsntprintf(m_ErrorMsg,ERROR_MSG_BUFFER_SIZE,pszFormat,args) < 0)
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m_ErrorMsg[ERROR_MSG_BUFFER_SIZE] = 0;
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va_end(args);
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}
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void CRegistryTree::SetInternalError()
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{
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SetError(_T("Internal Error"));
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}
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void CRegistryTree::AddErrorDescription(const TCHAR *pszFormat, ...)
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{
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size_t size = _tcslen(m_ErrorMsg);
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if (size < ERROR_MSG_BUFFER_SIZE)
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{
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TCHAR *pszAdd = m_ErrorMsg+size;
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va_list args;
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va_start(args,pszFormat);
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size = ERROR_MSG_BUFFER_SIZE-size;
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if (_vsntprintf(pszAdd,size,pszFormat,args) < 0)
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m_ErrorMsg[size] = 0;
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va_end(args);
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}
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}
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void CRegistryTree::SetErrorCommandNAOnRoot(const TCHAR *pszCommand)
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{
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ASSERT(pszCommand);
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if (pszCommand)
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SetError(_T("%s") COMMAND_NA_ON_ROOT,pszCommand);
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else
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SetInternalError();
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}
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BOOL CRegistryTree::InternalChangeCurrentKey(const TCHAR *pszSubkeyName, REGSAM DesiredAccess)
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{
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size_t size = _tcslen(pszSubkeyName);
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TCHAR *pszSubkeyNameBuffer = new TCHAR[size+3];
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if (!pszSubkeyNameBuffer)
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{
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SetError(_T("Cannot open key : %s%s\nError %d (%s)\n"),
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GetCurrentPath(),pszSubkeyName,ERROR_OUTOFMEMORY,GetErrorDescription(ERROR_OUTOFMEMORY));
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}
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_tcscpy(pszSubkeyNameBuffer,pszSubkeyName);
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if (size && (pszSubkeyName[0] == _T('\"')) && (pszSubkeyName[size-1] == _T('\"')))
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{
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pszSubkeyNameBuffer[size-1] = 0;
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pszSubkeyName = pszSubkeyNameBuffer+1;
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}
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if (_tcscmp(pszSubkeyName,_T(".")) == 0)
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{
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delete pszSubkeyNameBuffer;
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return TRUE;
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}
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if (_tcscmp(pszSubkeyName,_T("..")) == 0)
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{
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// Up level abstraction
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if (m_pCurrentKey->m_Key.IsRoot())
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{
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// We are on root
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ASSERT(m_pCurrentKey->m_pUp == NULL);
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SetError(_T("Cannot open key. The root is not child.\n"));
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delete pszSubkeyNameBuffer;
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return FALSE;
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}
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ASSERT(m_pCurrentKey->m_pUp);
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if (!m_pCurrentKey->m_pUp)
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{
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SetInternalError();
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delete pszSubkeyNameBuffer;
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return FALSE;
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}
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CNode *pNode = m_pCurrentKey;
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m_pCurrentKey = m_pCurrentKey->m_pUp;
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delete pNode;
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delete pszSubkeyNameBuffer;
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return TRUE;
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}
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CNode *pNewKey = new CNode;
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if (!pNewKey)
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{
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SetError(_T("Cannot open key : %s%s\nError %d (%s)\n"),
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GetCurrentPath(),pszSubkeyName,ERROR_OUTOFMEMORY,GetErrorDescription(ERROR_OUTOFMEMORY));
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delete pszSubkeyNameBuffer;
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return FALSE;
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}
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if (!InternalGetSubkey(pszSubkeyName,DesiredAccess,pNewKey->m_Key))
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{
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delete pNewKey;
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delete pszSubkeyNameBuffer;
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return FALSE;
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}
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pNewKey->m_pUp = m_pCurrentKey;
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m_pCurrentKey = pNewKey;
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delete pszSubkeyNameBuffer;
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return TRUE;
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}
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BOOL CRegistryTree::InternalGetSubkey(const TCHAR *pszSubkeyName, REGSAM DesiredAccess, CRegistryKey& rKey)
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{
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LONG nError;
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HKEY hNewKey = NULL;
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TCHAR *pszSubkeyNameCaseUpdated = NULL;
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nError = m_pCurrentKey->m_Key.OpenSubkey(DesiredAccess,pszSubkeyName,hNewKey);
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if (nError != ERROR_SUCCESS)
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{
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SetError(_T("Cannot open key : %s%s\nError %u (%s)\n"),
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GetCurrentPath(),pszSubkeyName,nError,GetErrorDescription(nError));
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return FALSE;
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}
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// enum subkeys to find the subkey and get its name in stored case.
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DWORD dwMaxSubkeyNameLength;
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nError = m_pCurrentKey->m_Key.GetSubkeyNameMaxLength(dwMaxSubkeyNameLength);
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if (nError != ERROR_SUCCESS)
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goto SkipCaseUpdate;
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pszSubkeyNameCaseUpdated = new TCHAR [dwMaxSubkeyNameLength];
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m_pCurrentKey->m_Key.InitSubkeyEnumeration(pszSubkeyNameCaseUpdated, dwMaxSubkeyNameLength);
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while ((nError = m_pCurrentKey->m_Key.GetNextSubkeyName()) == ERROR_SUCCESS)
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if (_tcsicmp(pszSubkeyNameCaseUpdated, pszSubkeyName) == 0)
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break;
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if (nError != ERROR_SUCCESS)
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{
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delete pszSubkeyNameCaseUpdated;
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pszSubkeyNameCaseUpdated = NULL;
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}
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SkipCaseUpdate:
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HRESULT hr;
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ASSERT(hNewKey);
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if (pszSubkeyNameCaseUpdated)
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{
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hr = rKey.Init(hNewKey,GetCurrentPath(),pszSubkeyNameCaseUpdated,DesiredAccess);
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if (FAILED(hr))
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{
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if (hr == (HRESULT)E_OUTOFMEMORY)
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SetError(_T("Cannot open key : %s%s\nError %d (%s)\n"),
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GetCurrentPath(),pszSubkeyName,ERROR_OUTOFMEMORY,GetErrorDescription(ERROR_OUTOFMEMORY));
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else
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SetError(_T("Cannot open key : %s%s\nUnknown error\n"), GetCurrentPath(), pszSubkeyName);
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goto Abort;
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}
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delete pszSubkeyNameCaseUpdated;
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}
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else
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{
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hr = rKey.Init(hNewKey,GetCurrentPath(),pszSubkeyName,DesiredAccess);
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if (FAILED(hr))
|
|
{
|
|
if (hr == (HRESULT)E_OUTOFMEMORY)
|
|
SetError(_T("Cannot open key : %s%s\nError %d (%s)\n"),
|
|
GetCurrentPath(),pszSubkeyName,ERROR_OUTOFMEMORY,GetErrorDescription(ERROR_OUTOFMEMORY));
|
|
else
|
|
SetError(_T("Cannot open key : %s%s\nUnknown error \n"),
|
|
GetCurrentPath(),
|
|
pszSubkeyName);
|
|
|
|
goto Abort;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
Abort:
|
|
if (pszSubkeyNameCaseUpdated)
|
|
delete pszSubkeyNameCaseUpdated;
|
|
|
|
if (hNewKey)
|
|
{
|
|
LONG nError = RegCloseKey(hNewKey);
|
|
ASSERT(nError == ERROR_SUCCESS);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
BOOL CRegistryTree::GetKey(const TCHAR *pszRelativePath, REGSAM DesiredAccess, CRegistryKey& rKey)
|
|
{
|
|
CRegistryTree Tree(*this);
|
|
|
|
if (!Tree.ChangeCurrentKey(pszRelativePath))
|
|
{
|
|
SetError(Tree.GetLastErrorDescription());
|
|
return FALSE;
|
|
}
|
|
|
|
if (Tree.m_pCurrentKey->m_Key.IsRoot())
|
|
{
|
|
HRESULT hr = rKey.InitRoot(m_pszMachineName);
|
|
if (FAILED(hr))
|
|
{
|
|
if (hr == (HRESULT)E_OUTOFMEMORY)
|
|
SetError(_T("\nError %d (%s)\n"),
|
|
ERROR_OUTOFMEMORY,GetErrorDescription(ERROR_OUTOFMEMORY));
|
|
else
|
|
SetInternalError();
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
// open key with desired access
|
|
|
|
// may be call to DuplicateHandle() is better.
|
|
// registry key handles returned by the RegConnectRegistry function cannot be used in a call to DuplicateHandle.
|
|
|
|
// Get short key name now...
|
|
const TCHAR *pszKeyName = Tree.m_pCurrentKey->m_Key.GetKeyName();
|
|
if (pszKeyName == NULL)
|
|
{
|
|
SetInternalError();
|
|
return FALSE;
|
|
}
|
|
|
|
size_t size = _tcslen(pszKeyName);
|
|
ASSERT(size);
|
|
if (!size)
|
|
{
|
|
SetInternalError();
|
|
return FALSE;
|
|
}
|
|
|
|
const TCHAR *pszShortKeyName_ = pszKeyName + size-1;
|
|
pszShortKeyName_--; // skip ending backslash
|
|
size = 0;
|
|
while (pszShortKeyName_ >= pszKeyName)
|
|
{
|
|
if (*pszShortKeyName_ == _T('\\'))
|
|
break;
|
|
pszShortKeyName_--;
|
|
size++;
|
|
}
|
|
|
|
if (!size || (*pszShortKeyName_ != _T('\\')))
|
|
{
|
|
ASSERT(FALSE);
|
|
SetInternalError();
|
|
return FALSE;
|
|
}
|
|
|
|
TCHAR *pszShortKeyName = new TCHAR [size+1];
|
|
if (!pszShortKeyName)
|
|
{
|
|
SetError(ERROR_OUTOFMEMORY);
|
|
return FALSE;
|
|
}
|
|
|
|
memcpy(pszShortKeyName,pszShortKeyName_+1,size*sizeof(TCHAR));
|
|
pszShortKeyName[size] = 0;
|
|
|
|
// change to parent key
|
|
if (!Tree.InternalChangeCurrentKey(_T(".."),READ_CONTROL))
|
|
{
|
|
ASSERT(FALSE);
|
|
SetInternalError();
|
|
return FALSE;
|
|
}
|
|
|
|
// change back to target key
|
|
if (!Tree.InternalGetSubkey(pszShortKeyName,DesiredAccess,rKey))
|
|
{
|
|
SetError(Tree.GetLastErrorDescription());
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|