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778 lines
17 KiB
778 lines
17 KiB
/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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accessp.c
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Abstract:
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Internal routines shared by NetUser API and Netlogon service. These
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routines convert from SAM specific data formats to UAS specific data
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formats.
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Author:
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Cliff Van Dyke (cliffv) 29-Aug-1991
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Environment:
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User mode only.
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Contains NT-specific code.
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Requires ANSI C extensions: slash-slash comments, long external names.
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Revision History:
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22-Oct-1991 JohnRo
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Made changes suggested by PC-LINT.
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04-Dec-1991 JohnRo
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Trying to get around a weird MIPS compiler bug.
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#undef DOMAIN_ALL_ACCESS // defined in both ntsam.h and ntwinapi.h
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#include <ntsam.h>
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#include <windef.h>
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#include <lmcons.h>
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#include <accessp.h>
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#include <debuglib.h>
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#include <lmaccess.h>
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#include <netdebug.h>
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#include <netsetp.h>
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#if(_WIN32_WINNT >= 0x0500)
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NET_API_STATUS
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NET_API_FUNCTION
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NetpSetDnsComputerNameAsRequired(
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IN PWSTR DnsDomainName
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)
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/*++
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Routine Description:
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Determines if the machine is set to update the machine Dns computer name based on changes
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to the Dns domain name. If so, the new value is set. Otherwise, no action is taken.
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Arguments:
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DnsDomainName - New Dns domain name of this machine
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Return Value:
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NERR_Success -- Success
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--*/
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{
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NET_API_STATUS NetStatus = NERR_Success;
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HKEY SyncKey;
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DWORD ValueType, Value, Length;
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BOOLEAN SetName = FALSE;
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PWCHAR AbsoluteSignifier = NULL;
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if ( DnsDomainName == NULL ) {
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return ERROR_INVALID_PARAMETER;
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}
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//
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// See if we should be doing the name change
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//
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NetStatus = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
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L"System\\CurrentControlSet\\Services\\Tcpip\\Parameters",
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0,
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KEY_QUERY_VALUE,
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&SyncKey );
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if ( NetStatus == NERR_Success ) {
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Length = sizeof( ULONG );
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NetStatus = RegQueryValueEx( SyncKey,
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L"SyncDomainWithMembership",
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NULL,
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&ValueType,
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( LPBYTE )&Value,
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&Length );
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if ( NetStatus == NERR_Success) {
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if ( Value == 1 ) {
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SetName = TRUE;
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}
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} else if ( NetStatus == ERROR_FILE_NOT_FOUND ) {
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NetStatus = NERR_Success;
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SetName = TRUE;
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}
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RegCloseKey( SyncKey );
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}
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if ( NetStatus == NERR_Success && SetName == TRUE ) {
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//
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// If we've got an absolute Dns domain name, shorten it up...
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//
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if ( wcslen(DnsDomainName) > 0 ) {
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AbsoluteSignifier = &DnsDomainName[ wcslen( DnsDomainName ) - 1 ];
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if ( *AbsoluteSignifier == L'.' ) {
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*AbsoluteSignifier = UNICODE_NULL;
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} else {
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AbsoluteSignifier = NULL;
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}
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}
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if ( !SetComputerNameEx( ComputerNamePhysicalDnsDomain, DnsDomainName ) ) {
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NetStatus = GetLastError();
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}
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if ( AbsoluteSignifier ) {
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*AbsoluteSignifier = L'.';
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}
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}
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return( NetStatus );
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}
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#endif
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VOID
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NetpGetAllowedAce(
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IN PACL Dacl,
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IN PSID Sid,
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OUT PVOID *Ace
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)
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/*++
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Routine Description:
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Given a DACL, find an AccessAllowed ACE containing a particuar SID.
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Arguments:
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Dacl - A pointer to the ACL to search.
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Sid - A pointer to the Sid to search for.
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Ace - Returns a pointer to the specified ACE. Returns NULL if there
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is no such ACE
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Return Value:
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None.
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--*/
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{
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NTSTATUS Status;
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ACL_SIZE_INFORMATION AclSize;
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DWORD AceIndex;
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//
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// Determine the size of the DACL so we can copy it
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//
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Status = RtlQueryInformationAcl(
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Dacl,
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&AclSize,
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sizeof(AclSize),
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AclSizeInformation );
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if ( ! NT_SUCCESS( Status ) ) {
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IF_DEBUG( ACCESSP ) {
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NetpKdPrint((
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"NetpGetDacl: RtlQueryInformationAcl returns %lX\n",
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Status ));
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}
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*Ace = NULL;
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return;
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}
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//
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// Loop through the ACEs looking for an ACCESS_ALLOWED ACE with the
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// right SID.
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//
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for ( AceIndex=0; AceIndex<AclSize.AceCount; AceIndex++ ) {
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Status = RtlGetAce( Dacl, AceIndex, (PVOID *)Ace );
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if ( ! NT_SUCCESS( Status ) ) {
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*Ace = NULL;
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return;
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}
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if ( ((PACE_HEADER)*Ace)->AceType != ACCESS_ALLOWED_ACE_TYPE ) {
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continue;
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}
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if ( RtlEqualSid( Sid,
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(PSID)&((PACCESS_ALLOWED_ACE)(*Ace))->SidStart )
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){
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return;
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}
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}
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//
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// Couldn't find any such ACE.
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//
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*Ace = NULL;
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return;
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}
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DWORD
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NetpAccountControlToFlags(
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IN DWORD UserAccountControl,
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IN PACL UserDacl
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)
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/*++
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Routine Description:
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Convert a SAM UserAccountControl field and the Discretionary ACL for
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the user into the NetUser API usriX_flags field.
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Arguments:
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UserAccountControl - The SAM UserAccountControl field for the user.
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UserDacl - The Discretionary ACL for the user.
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Return Value:
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Returns the usriX_flags field for the user.
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--*/
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{
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SID_IDENTIFIER_AUTHORITY WorldSidAuthority = SECURITY_WORLD_SID_AUTHORITY;
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DWORD WorldSid[sizeof(SID)/sizeof(DWORD) + SID_MAX_SUB_AUTHORITIES ];
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PACCESS_ALLOWED_ACE Ace;
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DWORD Flags = UF_SCRIPT;
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//
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// Build a copy of the world SID for later comparison.
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//
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RtlInitializeSid( (PSID) WorldSid, &WorldSidAuthority, 1 );
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*(RtlSubAuthoritySid( (PSID)WorldSid, 0 )) = SECURITY_WORLD_RID;
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//
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// Determine if the UF_PASSWD_CANT_CHANGE bit should be returned
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//
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// Return UF_PASSWD_CANT_CHANGE unless the world can change the
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// password.
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//
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//
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// If the user has no DACL, the password can change
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//
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if ( UserDacl != NULL ) {
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//
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// Find the WORLD grant ACE
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//
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NetpGetAllowedAce( UserDacl, (PSID) WorldSid, (PVOID *)&Ace );
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if ( Ace == NULL ) {
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Flags |= UF_PASSWD_CANT_CHANGE;
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} else {
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if ( (Ace->Mask & USER_CHANGE_PASSWORD) == 0 ) {
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Flags |= UF_PASSWD_CANT_CHANGE;
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}
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}
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}
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//
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// Set all other bits as a function of the SAM UserAccountControl
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//
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if ( UserAccountControl & USER_ACCOUNT_DISABLED ) {
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Flags |= UF_ACCOUNTDISABLE;
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}
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if ( UserAccountControl & USER_HOME_DIRECTORY_REQUIRED ){
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Flags |= UF_HOMEDIR_REQUIRED;
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}
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if ( UserAccountControl & USER_PASSWORD_NOT_REQUIRED ){
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Flags |= UF_PASSWD_NOTREQD;
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}
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if ( UserAccountControl & USER_DONT_EXPIRE_PASSWORD ){
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Flags |= UF_DONT_EXPIRE_PASSWD;
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}
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if ( UserAccountControl & USER_ACCOUNT_AUTO_LOCKED ){
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Flags |= UF_LOCKOUT;
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}
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if ( UserAccountControl & USER_MNS_LOGON_ACCOUNT ){
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Flags |= UF_MNS_LOGON_ACCOUNT;
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}
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if ( UserAccountControl & USER_ENCRYPTED_TEXT_PASSWORD_ALLOWED ){
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Flags |= UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED;
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}
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if ( UserAccountControl & USER_SMARTCARD_REQUIRED ){
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Flags |= UF_SMARTCARD_REQUIRED;
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}
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if ( UserAccountControl & USER_TRUSTED_FOR_DELEGATION ){
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Flags |= UF_TRUSTED_FOR_DELEGATION;
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}
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if ( UserAccountControl & USER_NOT_DELEGATED ){
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Flags |= UF_NOT_DELEGATED;
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}
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if ( UserAccountControl & USER_USE_DES_KEY_ONLY ){
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Flags |= UF_USE_DES_KEY_ONLY;
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}
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if ( UserAccountControl & USER_DONT_REQUIRE_PREAUTH) {
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Flags |= UF_DONT_REQUIRE_PREAUTH;
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}
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if ( UserAccountControl & USER_PASSWORD_EXPIRED) {
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Flags |= UF_PASSWORD_EXPIRED;
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}
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if ( UserAccountControl & USER_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION) {
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Flags |= UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION;
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}
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//
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// set account type bit.
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//
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//
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// account type bit are exculsive and precisely only one
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// account type bit is set. So, as soon as an account type bit is set
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// in the following if sequence we can return.
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//
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if( UserAccountControl & USER_TEMP_DUPLICATE_ACCOUNT ) {
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Flags |= UF_TEMP_DUPLICATE_ACCOUNT;
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} else if( UserAccountControl & USER_NORMAL_ACCOUNT ) {
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Flags |= UF_NORMAL_ACCOUNT;
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} else if( UserAccountControl & USER_INTERDOMAIN_TRUST_ACCOUNT ) {
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Flags |= UF_INTERDOMAIN_TRUST_ACCOUNT;
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} else if( UserAccountControl & USER_WORKSTATION_TRUST_ACCOUNT ) {
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Flags |= UF_WORKSTATION_TRUST_ACCOUNT;
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} else if( UserAccountControl & USER_SERVER_TRUST_ACCOUNT ) {
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Flags |= UF_SERVER_TRUST_ACCOUNT;
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} else {
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//
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// There is no known account type bit set in UserAccountControl.
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// ?? Flags |= UF_NORMAL_ACCOUNT;
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// NetpAssert( FALSE );
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}
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return Flags;
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}
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ULONG
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NetpDeltaTimeToSeconds(
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IN LARGE_INTEGER DeltaTime
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)
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/*++
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Routine Description:
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Convert an NT delta time specification to seconds
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Arguments:
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DeltaTime - Specifies the NT Delta time to convert. NT delta time is
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a negative number of 100ns units.
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Return Value:
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Returns the number of seconds. Any invalid or too large input
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returns TIMEQ_FOREVER.
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--*/
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{
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LARGE_INTEGER LargeSeconds;
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//
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// These are the magic numbers needed to do our extended division by
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// 10,000,000 = convert 100ns tics to one second tics
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//
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LARGE_INTEGER Magic10000000 = { (ULONG) 0xe57a42bd, (LONG) 0xd6bf94d5};
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#define SHIFT10000000 23
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//
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// Special case zero.
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//
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if ( DeltaTime.HighPart == 0 && DeltaTime.LowPart == 0 ) {
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return( 0 );
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}
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//
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// Convert the Delta time to a Large integer seconds.
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//
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LargeSeconds = RtlExtendedMagicDivide(
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DeltaTime,
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Magic10000000,
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SHIFT10000000 );
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#ifdef notdef
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NetpKdPrint(( "NetpDeltaTimeToSeconds: %lx %lx %lx %lx\n",
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DeltaTime.HighPart,
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DeltaTime.LowPart,
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LargeSeconds.HighPart,
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LargeSeconds.LowPart ));
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#endif // notdef
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//
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// Return too large a number or a positive number as TIMEQ_FOREVER
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//
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if ( LargeSeconds.HighPart != -1 ) {
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return TIMEQ_FOREVER;
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}
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return ( (ULONG)(- ((LONG)(LargeSeconds.LowPart))) );
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} // NetpDeltaTimeToSeconds
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LARGE_INTEGER
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NetpSecondsToDeltaTime(
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IN ULONG Seconds
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)
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/*++
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Routine Description:
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Convert a number of seconds to an NT delta time specification
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Arguments:
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Seconds - a positive number of seconds
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Return Value:
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Returns the NT Delta time. NT delta time is a negative number
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of 100ns units.
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--*/
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{
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LARGE_INTEGER DeltaTime;
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LARGE_INTEGER LargeSeconds;
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LARGE_INTEGER Answer;
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//
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// Special case TIMEQ_FOREVER (return a full scale negative)
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//
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if ( Seconds == TIMEQ_FOREVER ) {
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DeltaTime.LowPart = 0;
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DeltaTime.HighPart = (LONG) 0x80000000;
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//
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// Convert seconds to 100ns units simply by multiplying by 10000000.
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//
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// Convert to delta time by negating.
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//
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} else {
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LargeSeconds = RtlConvertUlongToLargeInteger( Seconds );
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Answer = RtlExtendedIntegerMultiply( LargeSeconds, 10000000 );
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if ( Answer.QuadPart < 0 ) {
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DeltaTime.LowPart = 0;
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DeltaTime.HighPart = (LONG) 0x80000000;
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} else {
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DeltaTime.QuadPart = -Answer.QuadPart;
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}
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}
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return DeltaTime;
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} // NetpSecondsToDeltaTime
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VOID
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NetpAliasMemberToPriv(
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IN ULONG AliasCount,
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IN PULONG AliasMembership,
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OUT LPDWORD Priv,
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OUT LPDWORD AuthFlags
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)
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/*++
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Routine Description:
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Converts membership in Aliases to LANMAN 2.0 style Priv and AuthFlags.
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Arguments:
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AliasCount - Specifies the number of Aliases in the AliasMembership array.
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AliasMembership - Specifies the Aliases that are to be converted to Priv
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and AuthFlags. Each element in the array specifies the RID of an
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alias in the BuiltIn domain.
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Priv - Returns the Lanman 2.0 Privilege level for the specified aliases.
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AuthFlags - Returns the Lanman 2.0 Authflags for the specified aliases.
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Return Value:
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None.
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--*/
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{
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DWORD j;
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BOOLEAN IsAdmin = FALSE;
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BOOLEAN IsUser = FALSE;
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//
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// Loop through the aliases finding any special aliases.
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//
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// If this user is the member of multiple operator aliases,
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// just "or" the appropriate bits in.
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//
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// If this user is the member of multiple "privilege" aliases,
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// just report the one with the highest privilege.
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// Report the user is a member of the Guest aliases by default.
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//
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*AuthFlags = 0;
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for ( j=0; j < AliasCount; j++ ) {
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switch ( AliasMembership[j] ) {
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case DOMAIN_ALIAS_RID_ADMINS:
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IsAdmin = TRUE;
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break;
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case DOMAIN_ALIAS_RID_USERS:
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IsUser = TRUE;
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break;
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case DOMAIN_ALIAS_RID_ACCOUNT_OPS:
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*AuthFlags |= AF_OP_ACCOUNTS;
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break;
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case DOMAIN_ALIAS_RID_SYSTEM_OPS:
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*AuthFlags |= AF_OP_SERVER;
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break;
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case DOMAIN_ALIAS_RID_PRINT_OPS:
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*AuthFlags |= AF_OP_PRINT;
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break;
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}
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}
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if ( IsAdmin ) {
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*Priv = USER_PRIV_ADMIN;
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} else if ( IsUser ) {
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*Priv = USER_PRIV_USER;
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} else {
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*Priv = USER_PRIV_GUEST;
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}
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}
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DWORD
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NetpGetElapsedSeconds(
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IN PLARGE_INTEGER Time
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)
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/*++
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Routine Description:
|
|
|
|
Computes the elapsed time in seconds since the time specified.
|
|
Returns 0 on error.
|
|
|
|
Arguments:
|
|
|
|
Time - Time (typically in the past) to compute the elapsed time from.
|
|
|
|
|
|
Return Value:
|
|
|
|
0: on error.
|
|
|
|
Number of seconds.
|
|
|
|
--*/
|
|
|
|
{
|
|
LARGE_INTEGER CurrentTime;
|
|
DWORD Current1980Time;
|
|
DWORD Prior1980Time;
|
|
NTSTATUS Status;
|
|
|
|
//
|
|
// Compute the age of the password
|
|
//
|
|
|
|
Status = NtQuerySystemTime( &CurrentTime );
|
|
if( !NT_SUCCESS(Status) ) {
|
|
return 0;
|
|
}
|
|
|
|
if ( !RtlTimeToSecondsSince1980( &CurrentTime, &Current1980Time) ) {
|
|
return 0;
|
|
}
|
|
|
|
if ( !RtlTimeToSecondsSince1980( Time, &Prior1980Time ) ) {
|
|
return 0;
|
|
}
|
|
|
|
if ( Current1980Time <= Prior1980Time ) {
|
|
return 0;
|
|
}
|
|
|
|
return Current1980Time - Prior1980Time;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
VOID
|
|
NetpConvertWorkstationList(
|
|
IN OUT PUNICODE_STRING WorkstationList
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Convert the list of workstations from a comma separated list to
|
|
a blank separated list. Any workstation name containing a blank is
|
|
silently removed.
|
|
|
|
Arguments:
|
|
|
|
WorkstationList - List of workstations to convert
|
|
|
|
Return Value:
|
|
|
|
None
|
|
|
|
--*/
|
|
{
|
|
LPWSTR Source;
|
|
LPWSTR Destination;
|
|
LPWSTR EndOfBuffer;
|
|
LPWSTR BeginningOfName;
|
|
BOOLEAN SkippingName;
|
|
ULONG NumberOfCharacters;
|
|
|
|
//
|
|
// Handle the trivial case.
|
|
//
|
|
|
|
if ( WorkstationList->Length == 0 ) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Initialization.
|
|
//
|
|
|
|
Destination = Source = WorkstationList->Buffer;
|
|
EndOfBuffer = Source + WorkstationList->Length/sizeof(WCHAR);
|
|
|
|
//
|
|
// Loop handling special characters
|
|
//
|
|
|
|
SkippingName = FALSE;
|
|
BeginningOfName = Destination;
|
|
|
|
|
|
while ( Source < EndOfBuffer ) {
|
|
|
|
switch ( *Source ) {
|
|
case ',':
|
|
|
|
if ( !SkippingName ) {
|
|
*Destination = ' ';
|
|
Destination++;
|
|
}
|
|
|
|
SkippingName = FALSE;
|
|
BeginningOfName = Destination;
|
|
break;
|
|
|
|
case ' ':
|
|
SkippingName = TRUE;
|
|
Destination = BeginningOfName;
|
|
break;
|
|
|
|
default:
|
|
if ( !SkippingName ) {
|
|
*Destination = *Source;
|
|
Destination ++;
|
|
}
|
|
break;
|
|
}
|
|
|
|
Source ++;
|
|
}
|
|
|
|
//
|
|
// Remove any trailing delimiter
|
|
//
|
|
|
|
NumberOfCharacters = (ULONG)(Destination - WorkstationList->Buffer);
|
|
|
|
if ( NumberOfCharacters > 0 &&
|
|
WorkstationList->Buffer[NumberOfCharacters-1] == ' ' ) {
|
|
|
|
NumberOfCharacters--;
|
|
}
|
|
|
|
WorkstationList->Length = (USHORT) (NumberOfCharacters * sizeof(WCHAR));
|
|
|
|
|
|
}
|