windows-nt/Source/XPSP1/NT/admin/admt/common/commonlib/treg.cpp

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//#pragma title( "TReg.cpp - NT registry class" )
/*
Copyright (c) 1995-1998, Mission Critical Software, Inc. All rights reserved.
===============================================================================
Module - TReg.cpp
System - Common
Author - Tom Bernhardt, Rich Denham
Created - 1995-09-01
Description - NT registry class.
Updates -
===============================================================================
*/
#ifdef USE_STDAFX
# include "stdafx.h"
#else
# include <windows.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "Common.hpp"
#include "UString.hpp"
#include "Err.hpp"
#include "TNode.hpp"
#include "TReg.hpp"
// Short term solution
#define MAX_REG_NAMELEN 512
#define MAX_REG_VALUELEN 2048
// Destructor function was formerly inline.
// It is here to facilitate handle leak tracing.
TRegKey::~TRegKey()
{
Close();
};
// Close function was formerly inline.
// It is here to facilitate handle leak tracing.
void
TRegKey::Close()
{
if ( hKey != INVALID_HANDLE_VALUE )
{
RegCloseKey( hKey );
hKey = (HKEY) INVALID_HANDLE_VALUE;
}
};
// open registry on remote computer
DWORD
TRegKey::Connect(
HKEY hPreDefined ,// in -must be HKEY_LOCAL_MACHINE or HKEY_USERS
TCHAR const * machineName // in -remote computer name
)
{
LONG rc; // return code
if ( hKey != INVALID_HANDLE_VALUE )
{
Close();
}
rc = RegConnectRegistry( const_cast<TCHAR *>(machineName), hPreDefined, &hKey );
if ( rc )
{
hKey = (HKEY) INVALID_HANDLE_VALUE;
}
return (DWORD)rc;
}
// create new key
DWORD
TRegKey::Create(
TCHAR const * keyname ,// in -name/path of key to create/open
HKEY hParent ,// in -handle of parent key
DWORD * pDisp ,// out-disposition of create
DWORD access // in -security access mask for key
)
{
DWORD disp;
LONG rc;
if ( hKey != INVALID_HANDLE_VALUE )
{
Close();
}
rc = RegCreateKeyEx( hParent,
keyname,
0,
NULL,
REG_OPTION_NON_VOLATILE,
access,
NULL,
&hKey,
(pDisp!=NULL) ? pDisp : &disp );
if ( rc )
{
hKey = (HKEY) INVALID_HANDLE_VALUE;
}
return (DWORD)rc;
}
// create new key (using backup/restore)
DWORD
TRegKey::CreateBR(
TCHAR const * keyname ,// in -name/path of key to create/open
HKEY hParent ,// in -handle of parent key
DWORD * pDisp ,// out-disposition of create
DWORD access // in -security access mask for key
)
{
DWORD disp;
LONG rc;
if ( hKey != INVALID_HANDLE_VALUE )
{
Close();
}
rc = RegCreateKeyEx( hParent,
keyname,
0,
NULL,
REG_OPTION_BACKUP_RESTORE,
access,
NULL,
&hKey,
(pDisp!=NULL) ? pDisp : &disp );
if ( rc )
{
hKey = (HKEY) INVALID_HANDLE_VALUE;
}
return (DWORD)rc;
}
// open existing key
DWORD
TRegKey::Open(
TCHAR const * keyname ,// in -name/path of key to create/open
HKEY hParent ,// in -handle of parent key
DWORD access // in -security access mask for key
)
{
LONG rc;
if ( hKey != INVALID_HANDLE_VALUE )
{
Close();
}
rc = RegOpenKeyEx( hParent,
keyname,
0,
access,
&hKey );
if ( rc )
{
hKey = (HKEY) INVALID_HANDLE_VALUE;
}
return (DWORD)rc;
}
// Gets the subkey value of the specified index number
DWORD // ret-os return code
TRegKey::SubKeyEnum(
DWORD n ,// in -ordinal number of subkey
TCHAR * keyname ,// out-key name
DWORD keylen // in -max size of key name in TCHARs
) const
{
LONG rc;
DWORD keyLen = keylen;
FILETIME lastWrite;
rc = RegEnumKeyEx( hKey,
n,
keyname,
&keyLen,
0,
NULL,
NULL,
&lastWrite );
return (DWORD)rc;
}
// Enumerate value
DWORD // ret-0 or error code
TRegKey::ValueEnum(
DWORD index ,// in -ordinal number of subkey
TCHAR * name ,// out-name
DWORD namelen ,// in -name size in TCHARs
void * value ,// out-value
DWORD * valuelen ,// i/o-value size in BYTEs
DWORD * type // out-value type code
) const
{
return (DWORD)RegEnumValue( hKey, index, name, &namelen, NULL, type, (BYTE *) value, valuelen );
}
// Get REG_DWORD value
DWORD // ret-OS return code
TRegKey::ValueGetDWORD(
TCHAR const * name ,// in -value name
DWORD * value // out-returned DWORD value
) const
{
LONG osRc; // OS return code
DWORD type; // type of value
DWORD len = sizeof *value; // value length
osRc = RegQueryValueEx( hKey, name, NULL, &type, (BYTE *) value, &len );
if ( !osRc && (type != REG_DWORD) )
{
osRc = ERROR_FILE_NOT_FOUND;
}
return (DWORD)osRc;
}
// Get REG_SZ value
DWORD // ret-OS return code
TRegKey::ValueGetStr(
TCHAR const * name ,// in -value name
TCHAR * value ,// out-value buffer
DWORD maxlen // in -sizeof value buffer
) const
{
LONG osRc; // OS return code
DWORD type; // type of value
DWORD len; // value length
// force maxlen to an integral number of TEXT characters
maxlen = maxlen / (sizeof value[0]) * (sizeof value[0]);
if ( !maxlen )
{
osRc = ERROR_FILE_NOT_FOUND;
}
else
{
len = maxlen;
osRc = RegQueryValueEx( hKey, name, NULL, &type, (BYTE *) value, &len );
len = len / (sizeof value[0]) * (sizeof value[0]);
if ( !osRc && (type != REG_SZ) )
{
osRc = ERROR_FILE_NOT_FOUND;
}
if ( osRc )
{
value[0] = TEXT('\0');
}
else
{ // return of a null-terminated string is not guaranteed by API!
// force null-terminated string, truncate string if necessary.
if ( len >= maxlen )
{
len = maxlen - sizeof value[0];
}
value[len/(sizeof value[0])] = TEXT('\0');
}
}
return (DWORD)osRc;
}
DWORD
TRegKey::ValueGet(
TCHAR const * name ,// in -name
void * value ,// out-value
DWORD * lenvalue ,// i/o-length of value
DWORD * typevalue // out-type of value
) const
{
return (DWORD)RegQueryValueEx( hKey, name, 0, typevalue, (UCHAR *) value, lenvalue );
}
// Set REG_SZ value
DWORD
TRegKey::ValueSetStr(
TCHAR const * name ,// in -value name
TCHAR const * value ,// out-value
DWORD type // in -value type
) const
{
return (DWORD)RegSetValueEx( hKey,
name,
NULL,
type,
(LPBYTE) value,
(UStrLen(value) + 1) * sizeof value[0] );
}
DWORD
TRegKey::ValueSet(
TCHAR const * name ,// in -name
void const * value ,// in -value
DWORD lenvalue ,// in -length of value
DWORD typevalue // in -type of value
) const
{
return (DWORD)RegSetValueEx( hKey,
name,
0,
typevalue,
(UCHAR const *) value,
lenvalue );
}
DWORD // ret-0 or error code
TRegKey::ValueDel(
TCHAR const * name // in -value name
) const
{
LONG rc;
rc = (DWORD)RegDeleteValue(hKey, name);
return rc;
}
DWORD // ret-OS return code
TRegKey::HiveCopy(
TRegKey const * source // in -source hive
)
{
DWORD retval=0; // returned value
DWORD index; // key/value index
TCHAR name[MAX_REG_NAMELEN]; // key name
TCHAR value[MAX_REG_VALUELEN]; // value name
DWORD valuelen; // value length
DWORD type; // value type
TRegKey srcNest; // nested source registry
TRegKey trgNest; // nested target registry
// process values at this level
for ( index = 0;
!retval;
index++ )
{
valuelen = sizeof value;
retval = source->ValueEnum( index, name, MAX_REG_NAMELEN, value, &valuelen, &type );
if ( !retval )
{
retval = this->ValueSet( name, value, valuelen, type );
}
else if ( retval == ERROR_MORE_DATA )
{
retval = 0;
}
}
if ( retval == ERROR_NO_MORE_ITEMS )
{
retval = 0;
}
// process keys at this level; for each key make a recursive call
for ( index = 0;
!retval;
index++ )
{
retval = source->SubKeyEnum( index, name, MAX_REG_NAMELEN );
if ( !retval )
{
retval = srcNest.Open( name, source );
if ( !retval )
{
retval = trgNest.Create( name, this );
if ( !retval )
{
retval = trgNest.HiveCopy( &srcNest );
trgNest.Close();
}
srcNest.Close();
}
}
}
if ( retval == ERROR_NO_MORE_ITEMS )
{
retval = 0;
}
return retval;
}
DWORD // ret-OS return code
TRegKey::HiveDel()
{
DWORD retval = 0; // returned value
DWORD index; // value/key index
TCHAR name[MAX_REG_NAMELEN]; // name
DWORD namelen; // name length
BYTE value[MAX_REG_VALUELEN]; // value
DWORD valuelen; // value length
DWORD type; // value type code
TRegKey trgNest; // nested target registry
// delete values at this level
for ( index = 0;
!retval;
/* index++ */ ) // note that index remains at zero
{
namelen = MAX_REG_NAMELEN;
valuelen = sizeof value;
retval = ValueEnum( index, name, namelen, value, &valuelen, &type );
if ( retval == ERROR_MORE_DATA )
{
retval = 0;
}
if ( !retval )
{
retval = ValueDel( name );
}
}
if ( retval == ERROR_NO_MORE_ITEMS )
{
retval = 0;
}
// process keys at this level; for each key make a recursive call
for ( index = 0;
!retval;
/* index++ */ ) // note that index remains at zero
{
retval = SubKeyEnum( index, name, MAX_REG_NAMELEN );
if ( !retval )
{
retval = trgNest.Open( name, this );
if ( !retval )
{
retval = trgNest.HiveDel();
trgNest.Close();
}
retval = SubKeyDel( name );
}
}
if ( retval == ERROR_NO_MORE_ITEMS )
{
retval = 0;
}
return retval;
}
// These four classes are used only by TRegReplicate
// Class to represent one registry key
class RKey : public TNode
{
friend class RKeyList;
private:
TCHAR * name; // key name
protected:
public:
RKey() { name = NULL; };
~RKey() { if ( name ) delete name; };
BOOL New( TCHAR const * aname );
TCHAR const * GetName() const { return name; };
};
BOOL
RKey::New(
TCHAR const * aname // in -key name
)
{
name = new TCHAR[UStrLen(aname)+1];
if ( name )
{
UStrCpy( name, aname );
}
return !!name;
}
// Class to represent the set of registry keys at one level
class RKeyList : public TNodeListSortable
{
private:
static TNodeCompare( Compare ) { return UStrICmp(
((RKey const *) v1)->name,
((RKey const *) v2)->name ); }
protected:
public:
RKeyList() : TNodeListSortable( Compare ) {}
~RKeyList();
};
// RKeyList object destructor
RKeyList::~RKeyList()
{
DeleteAllListItems( RKey );
}
// Class to represent one registry value
class RValue : public TNode
{
friend class RValueList;
private:
TCHAR * name; // value's name
BYTE * value; // value's value
DWORD valuelen; // value's value length
DWORD type; // value's type
protected:
public:
RValue() { name = NULL; value = NULL; valuelen = type = 0; };
~RValue() { if ( name ) delete name;
if ( value ) delete value; };
BOOL New( TCHAR const * aname, BYTE const * avalue, DWORD valuelen, DWORD type );
TCHAR const * GetName() const { return name; };
BYTE const * GetValue() const { return value; };
DWORD GetValueLen() const { return valuelen; };
DWORD GetType() const { return type; };
};
BOOL
RValue::New(
TCHAR const * aname ,// in -value's name
BYTE const * avalue ,// in -value's value
DWORD avaluelen ,// in -value's value length
DWORD atype // in -value's type
)
{
name = new TCHAR[UStrLen(aname)+1];
if ( name )
{
UStrCpy( name, aname );
}
value = new BYTE[avaluelen];
if ( value )
{
memcpy( value, avalue, avaluelen );
}
valuelen = avaluelen;
type = atype;
return name && value;
}
// Class to represent the set of registry values at one level
class RValueList : public TNodeListSortable
{
private:
static TNodeCompare( Compare ) { return UStrICmp(
((RValue const *)v1)->name,
((RValue const *)v2)->name ); }
protected:
public:
RValueList() : TNodeListSortable( Compare ) {}
~RValueList();
};
// RValueList object destructor
RValueList::~RValueList()
{
DeleteAllListItems( RValue );
}
// Static subroutine used only by TRegReplicate
// collect all values at one registry level into a RValueList
DWORD static
CollectValues(
RValueList * pValueList ,// out-value list to be built
TRegKey const * pRegKey // in -registry key
)
{
DWORD retval=0; // returned value
DWORD index; // value enum index
TCHAR name[MAX_REG_NAMELEN]; // value name
BYTE value[MAX_REG_VALUELEN]; // value value
DWORD valuelen; // value length
DWORD type; // value type
RValue * pValue; // new value
for ( index = 0;
!retval;
index++ )
{
valuelen = sizeof value;
retval = pRegKey->ValueEnum( index, name, MAX_REG_NAMELEN, value, &valuelen, &type );
if ( !retval )
{
pValue = new RValue;
if ( pValue )
{
if ( pValue->New( name, value, valuelen, type ) )
{
pValueList->Insert( pValue );
}
else
{
delete pValue;
pValue = NULL;
}
}
if ( !pValue )
{
retval = ERROR_NOT_ENOUGH_MEMORY;
}
}
else if ( retval == ERROR_MORE_DATA )
{
retval = 0;
}
}
if ( retval == ERROR_NO_MORE_ITEMS )
{
retval = 0;
}
return retval;
}
// Static subroutine used only by TRegReplicate
// collect all keys at one registry level into a RKeyList
DWORD static
CollectKeys(
RKeyList * pKeyList ,// out-key list to be built
TRegKey const * pRegKey // in -registry key
)
{
DWORD retval=0; // returned value
DWORD index; // key enum index
TCHAR name[MAX_REG_NAMELEN]; // key name
RKey * pKey; // new key object
for ( index = 0;
!retval;
index++ )
{
retval = pRegKey->SubKeyEnum( index, name, MAX_REG_NAMELEN );
if ( !retval )
{
pKey = new RKey;
if ( pKey )
{
if ( pKey->New( name ) )
{
pKeyList->Insert( pKey );
}
else
{
delete pKey;
pKey = NULL;
}
}
if ( !pKey )
{
retval = ERROR_NOT_ENOUGH_MEMORY;
}
}
}
if ( retval == ERROR_NO_MORE_ITEMS )
{
retval = 0;
}
return retval;
}
// Replicate registry hive
DWORD // ret-OS return code
TRegKey::HiveReplicate(
TRegKey const * source // in -source hive
)
{
DWORD retval=0; // returned value
RValueList srcValues; // source values
RValueList trgValues; // target values
TNodeListEnum eSrcValue; // enumerate source values
RValue const * pSrcValue; // source value
TNodeListEnum eTrgValue; // enumerate target values
RValue const * pTrgValue; // target value
RKeyList srcKeys; // source keys
RKeyList trgKeys; // target keys
TNodeListEnum eSrcKey; // enumerate source keys
RKey const * pSrcKey; // source key
TNodeListEnum eTrgKey; // enumerate target keys
RKey const * pTrgKey; // target key
int cmpRc; // compare return code
TRegKey srcNest; // nested source registry
TRegKey trgNest; // nested target registry
// handle replication of values at this level
CollectValues( &srcValues, source );
CollectValues( &trgValues, this );
// now merge the values
pSrcValue = (RValue const *) eSrcValue.OpenFirst( &srcValues );
pTrgValue = (RValue const *) eTrgValue.OpenFirst( &trgValues );
while ( !retval && (pSrcValue || pTrgValue) )
{
if ( !pTrgValue )
{
cmpRc = -1;
}
else if ( !pSrcValue )
{
cmpRc = 1;
}
else
{
cmpRc = UStrICmp( pSrcValue->GetName(), pTrgValue->GetName() );
}
if ( cmpRc < 0 )
{ // source value only (copy)
retval = this->ValueSet( pSrcValue->GetName(), pSrcValue->GetValue(),
pSrcValue->GetValueLen(), pSrcValue->GetType() );
pSrcValue = (RValue const *) eSrcValue.Next();
}
else if ( cmpRc > 0 )
{ // target value only (delete)
retval = this->ValueDel( pTrgValue->GetName() );
pTrgValue = (RValue const *) eTrgValue.Next();
}
else /* if ( cmpRc == 0 ) */
{ // identical value names (replicate)
retval = this->ValueSet( pSrcValue->GetName(), pSrcValue->GetValue(),
pSrcValue->GetValueLen(), pSrcValue->GetType() );
pSrcValue = (RValue const *) eSrcValue.Next();
pTrgValue = (RValue const *) eTrgValue.Next();
}
}
eSrcValue.Close();
eTrgValue.Close();
// handle replication of keys at this level
CollectKeys( &srcKeys, source );
CollectKeys( &trgKeys, this );
// now merge the values
pSrcKey = (RKey const *) eSrcKey.OpenFirst( &srcKeys );
pTrgKey = (RKey const *) eTrgKey.OpenFirst( &trgKeys );
while ( !retval && (pSrcKey || pTrgKey) )
{
if ( !pTrgKey )
{
cmpRc = -1;
}
else if ( !pSrcKey )
{
cmpRc = 1;
}
else
{
cmpRc = UStrICmp( pSrcKey->GetName(), pTrgKey->GetName() );
}
if ( cmpRc < 0 )
{ // source key only (copy hive)
retval = srcNest.Open( pSrcKey->GetName(), source );
if ( !retval )
{
retval = trgNest.Create( pSrcKey->GetName(), this );
if ( !retval )
{
retval = trgNest.HiveCopy( &srcNest );
trgNest.Close();
}
srcNest.Close();
}
pSrcKey = (RKey const *) eSrcKey.Next();
}
else if ( cmpRc > 0 )
{ // target key only (delete hive)
retval = trgNest.Open( pTrgKey->GetName(), this );
if ( !retval )
{
retval = trgNest.HiveDel();
trgNest.Close();
}
retval = SubKeyDel( pTrgKey->GetName() );
pTrgKey = (RKey const *) eTrgKey.Next();
}
else /* if ( cmpRc == 0 ) */
{ // identical keys (replicate hive)
retval = srcNest.Open( pSrcKey->GetName(), source );
if ( !retval )
{
retval = trgNest.Open( pSrcKey->GetName(), this );
if ( !retval )
{
retval = trgNest.HiveReplicate( &srcNest );
trgNest.Close();
}
srcNest.Close();
}
pSrcKey = (RKey const *) eSrcKey.Next();
pTrgKey = (RKey const *) eTrgKey.Next();
}
}
eSrcKey.Close();
eTrgKey.Close();
return retval;
}
// TReg.cpp - end of file