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NT4/private/ntos/se/seglobal.c

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2001-01-01 00:00:00 +01:00
/*++
Copyright (c) 1989 Microsoft Corporation
Module Name:
seglobal.c
Abstract:
This module contains the global variables used and exported by the security
component.
Author:
Jim Kelly (JimK) 5-Aug-1990
Environment:
Kernel mode only.
Revision History:
--*/
#include "sep.h"
#include "adt.h"
#include "seopaque.h"
VOID
SepInitializePrivilegeSets( VOID );
VOID
SepInitSystemDacls( VOID );
#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT,SepVariableInitialization)
#pragma alloc_text(INIT,SepInitializePrivilegeSets)
#pragma alloc_text(INIT,SepInitSystemDacls)
#pragma alloc_text(INIT,SepInitializeWorkList)
#pragma alloc_text(PAGE,SepAssemblePrivileges)
#endif
#ifdef SE_DIAGNOSTICS_ENABLED
//
// Used to control the active SE diagnostic support provided
//
ULONG SeGlobalFlag = 0;
#endif // SE_DIAGNOSTICS_ENABLED
////////////////////////////////////////////////////////////////////////
// //
// Global, READ ONLY, Security variables //
// //
////////////////////////////////////////////////////////////////////////
//
// Authentication ID and source name used for system processes
//
TOKEN_SOURCE SeSystemTokenSource = {"*SYSTEM*", 0};
LUID SeSystemAuthenticationId = SYSTEM_LUID;
//
// Universal well known SIDs
//
PSID SeNullSid;
PSID SeWorldSid;
PSID SeLocalSid;
PSID SeCreatorOwnerSid;
PSID SeCreatorGroupSid;
PSID SeCreatorGroupServerSid;
PSID SeCreatorOwnerServerSid;
//
// Sids defined by NT
//
PSID SeNtAuthoritySid;
PSID SeDialupSid;
PSID SeNetworkSid;
PSID SeBatchSid;
PSID SeInteractiveSid;
PSID SeServiceSid;
PSID SeLocalSystemSid;
PSID SeAliasAdminsSid;
PSID SeAliasUsersSid;
PSID SeAliasGuestsSid;
PSID SeAliasPowerUsersSid;
PSID SeAliasAccountOpsSid;
PSID SeAliasSystemOpsSid;
PSID SeAliasPrintOpsSid;
PSID SeAliasBackupOpsSid;
//
// System default DACLs & Security Descriptors
//
// SePublicDefaultDacl - Protects objects so that WORLD:E, Admins:ALL, System: ALL.
// Not inherited by sub-objects.
//
// SePublicOpenDacl - Protects so that WORLD can RWE and Admins: All.
// Not inherited by sub-objects.
//
// SeSystemDefaultDacl - Protects objects so that SYSTEM & ADMIN can use them.
// Not inherited by subobjects.
//
PSECURITY_DESCRIPTOR SePublicDefaultSd;
SECURITY_DESCRIPTOR SepPublicDefaultSd;
PSECURITY_DESCRIPTOR SePublicOpenSd;
SECURITY_DESCRIPTOR SepPublicOpenSd;
PSECURITY_DESCRIPTOR SeSystemDefaultSd;
SECURITY_DESCRIPTOR SepSystemDefaultSd;
PACL SePublicDefaultDacl;
PACL SePublicOpenDacl;
PACL SeSystemDefaultDacl;
//
// Sid of primary domain, and admin account in that domain
//
PSID SepPrimaryDomainSid;
PSID SepPrimaryDomainAdminSid;
//
// Well known privilege values
//
LUID SeCreateTokenPrivilege;
LUID SeAssignPrimaryTokenPrivilege;
LUID SeLockMemoryPrivilege;
LUID SeIncreaseQuotaPrivilege;
LUID SeUnsolicitedInputPrivilege;
LUID SeTcbPrivilege;
LUID SeSecurityPrivilege;
LUID SeTakeOwnershipPrivilege;
LUID SeLoadDriverPrivilege;
LUID SeCreatePagefilePrivilege;
LUID SeIncreaseBasePriorityPrivilege;
LUID SeSystemProfilePrivilege;
LUID SeSystemtimePrivilege;
LUID SeProfileSingleProcessPrivilege;
LUID SeCreatePermanentPrivilege;
LUID SeBackupPrivilege;
LUID SeRestorePrivilege;
LUID SeShutdownPrivilege;
LUID SeDebugPrivilege;
LUID SeAuditPrivilege;
LUID SeSystemEnvironmentPrivilege;
LUID SeChangeNotifyPrivilege;
LUID SeRemoteShutdownPrivilege;
//
// Define the following structures for export from the kernel.
// This will allow us to export pointers to these structures
// rather than a pointer for each element in the structure.
//
PSE_EXPORTS SeExports;
SE_EXPORTS SepExports;
static SID_IDENTIFIER_AUTHORITY SepNullSidAuthority = SECURITY_NULL_SID_AUTHORITY;
static SID_IDENTIFIER_AUTHORITY SepWorldSidAuthority = SECURITY_WORLD_SID_AUTHORITY;
static SID_IDENTIFIER_AUTHORITY SepLocalSidAuthority = SECURITY_LOCAL_SID_AUTHORITY;
static SID_IDENTIFIER_AUTHORITY SepCreatorSidAuthority = SECURITY_CREATOR_SID_AUTHORITY;
static SID_IDENTIFIER_AUTHORITY SepNtAuthority = SECURITY_NT_AUTHORITY;
//
// Some variables we are going to use to help speed up access
// checking.
//
static ULONG SinglePrivilegeSetSize;
static ULONG DoublePrivilegeSetSize;
static PPRIVILEGE_SET SepSystemSecurityPrivilegeSet;
static PPRIVILEGE_SET SepTakeOwnershipPrivilegeSet;
static PPRIVILEGE_SET SepDoublePrivilegeSet;
//
// Array containing information describing what is to be audited
//
SE_AUDITING_STATE SeAuditingState[POLICY_AUDIT_EVENT_TYPE_COUNT] =
{
{ FALSE, FALSE },
{ FALSE, FALSE },
{ FALSE, FALSE },
{ FALSE, FALSE },
{ FALSE, FALSE },
{ FALSE, FALSE },
{ FALSE, FALSE }
};
//
// Boolean indicating whether or not auditing is enabled for the system
//
BOOLEAN SepAdtAuditingEnabled = FALSE;
//
// Boolean to hold whether or not the user wants the system to crash when
// an audit fails.
//
BOOLEAN SepCrashOnAuditFail = FALSE;
//
// Handle to the LSA process
//
HANDLE SepLsaHandle;
//
// Boolean indicating that we're auditing detailed events
// such as process creation.
//
BOOLEAN SeDetailedAuditing = FALSE;
UNICODE_STRING SeSubsystemName;
//
// Mutex protecting the queue of work being passed to LSA
//
ERESOURCE SepLsaQueueLock;
//
// Doubly linked list of work items queued to worker threads.
//
LIST_ENTRY SepLsaQueue;
//
// Count to tell us how long the queue gets in SepRmCallLsa
//
ULONG SepLsaQueueLength = 0;
SEP_WORK_ITEM SepExWorkItem;
////////////////////////////////////////////////////////////////////////
// //
// Variable Initialization Routines //
// //
////////////////////////////////////////////////////////////////////////
BOOLEAN
SepVariableInitialization()
/*++
Routine Description:
This function initializes the global variables used by and exposed
by security.
Arguments:
None.
Return Value:
TRUE if variables successfully initialized.
FALSE if not successfully initialized.
--*/
{
ULONG SidWithZeroSubAuthorities;
ULONG SidWithOneSubAuthority;
ULONG SidWithTwoSubAuthorities;
ULONG SidWithThreeSubAuthorities;
SID_IDENTIFIER_AUTHORITY NullSidAuthority;
SID_IDENTIFIER_AUTHORITY WorldSidAuthority;
SID_IDENTIFIER_AUTHORITY LocalSidAuthority;
SID_IDENTIFIER_AUTHORITY CreatorSidAuthority;
SID_IDENTIFIER_AUTHORITY SeNtAuthority;
PAGED_CODE();
NullSidAuthority = SepNullSidAuthority;
WorldSidAuthority = SepWorldSidAuthority;
LocalSidAuthority = SepLocalSidAuthority;
CreatorSidAuthority = SepCreatorSidAuthority;
SeNtAuthority = SepNtAuthority;
//
// The following SID sizes need to be allocated
//
SidWithZeroSubAuthorities = RtlLengthRequiredSid( 0 );
SidWithOneSubAuthority = RtlLengthRequiredSid( 1 );
SidWithTwoSubAuthorities = RtlLengthRequiredSid( 2 );
SidWithThreeSubAuthorities = RtlLengthRequiredSid( 3 );
//
// Allocate and initialize the universal SIDs
//
SeNullSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeWorldSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeLocalSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeCreatorOwnerSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeCreatorGroupSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeCreatorOwnerServerSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeCreatorGroupServerSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
//
// Fail initialization if we didn't get enough memory for the universal
// SIDs.
//
if ( (SeNullSid == NULL) ||
(SeWorldSid == NULL) ||
(SeLocalSid == NULL) ||
(SeCreatorOwnerSid == NULL) ||
(SeCreatorGroupSid == NULL) ||
(SeCreatorOwnerServerSid == NULL ) ||
(SeCreatorGroupServerSid == NULL )
) {
return( FALSE );
}
RtlInitializeSid( SeNullSid, &NullSidAuthority, 1 );
RtlInitializeSid( SeWorldSid, &WorldSidAuthority, 1 );
RtlInitializeSid( SeLocalSid, &LocalSidAuthority, 1 );
RtlInitializeSid( SeCreatorOwnerSid, &CreatorSidAuthority, 1 );
RtlInitializeSid( SeCreatorGroupSid, &CreatorSidAuthority, 1 );
RtlInitializeSid( SeCreatorOwnerServerSid, &CreatorSidAuthority, 1 );
RtlInitializeSid( SeCreatorGroupServerSid, &CreatorSidAuthority, 1 );
*(RtlSubAuthoritySid( SeNullSid, 0 )) = SECURITY_NULL_RID;
*(RtlSubAuthoritySid( SeWorldSid, 0 )) = SECURITY_WORLD_RID;
*(RtlSubAuthoritySid( SeLocalSid, 0 )) = SECURITY_LOCAL_RID;
*(RtlSubAuthoritySid( SeCreatorOwnerSid, 0 )) = SECURITY_CREATOR_OWNER_RID;
*(RtlSubAuthoritySid( SeCreatorGroupSid, 0 )) = SECURITY_CREATOR_GROUP_RID;
*(RtlSubAuthoritySid( SeCreatorOwnerServerSid, 0 )) = SECURITY_CREATOR_OWNER_SERVER_RID;
*(RtlSubAuthoritySid( SeCreatorGroupServerSid, 0 )) = SECURITY_CREATOR_GROUP_SERVER_RID;
//
// Allocate and initialize the NT defined SIDs
//
SeNtAuthoritySid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithZeroSubAuthorities,'iSeS');
SeDialupSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeNetworkSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeBatchSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeInteractiveSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeServiceSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeLocalSystemSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithOneSubAuthority,'iSeS');
SeAliasAdminsSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithTwoSubAuthorities,'iSeS');
SeAliasUsersSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithTwoSubAuthorities,'iSeS');
SeAliasGuestsSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithTwoSubAuthorities,'iSeS');
SeAliasPowerUsersSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithTwoSubAuthorities,'iSeS');
SeAliasAccountOpsSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithTwoSubAuthorities,'iSeS');
SeAliasSystemOpsSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithTwoSubAuthorities,'iSeS');
SeAliasPrintOpsSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithTwoSubAuthorities,'iSeS');
SeAliasBackupOpsSid = (PSID)ExAllocatePoolWithTag(PagedPool,SidWithTwoSubAuthorities,'iSeS');
//
// Fail initialization if we didn't get enough memory for the NT SIDs.
//
if ( (SeNtAuthoritySid == NULL) ||
(SeDialupSid == NULL) ||
(SeNetworkSid == NULL) ||
(SeBatchSid == NULL) ||
(SeInteractiveSid == NULL) ||
(SeServiceSid == NULL) ||
(SeLocalSystemSid == NULL) ||
(SeAliasAdminsSid == NULL) ||
(SeAliasUsersSid == NULL) ||
(SeAliasGuestsSid == NULL) ||
(SeAliasPowerUsersSid == NULL) ||
(SeAliasAccountOpsSid == NULL) ||
(SeAliasSystemOpsSid == NULL) ||
(SeAliasPrintOpsSid == NULL) ||
(SeAliasBackupOpsSid == NULL)
) {
return( FALSE );
}
RtlInitializeSid( SeNtAuthoritySid, &SeNtAuthority, 0 );
RtlInitializeSid( SeDialupSid, &SeNtAuthority, 1 );
RtlInitializeSid( SeNetworkSid, &SeNtAuthority, 1 );
RtlInitializeSid( SeBatchSid, &SeNtAuthority, 1 );
RtlInitializeSid( SeInteractiveSid, &SeNtAuthority, 1 );
RtlInitializeSid( SeServiceSid, &SeNtAuthority, 1 );
RtlInitializeSid( SeLocalSystemSid, &SeNtAuthority, 1 );
RtlInitializeSid( SeAliasAdminsSid, &SeNtAuthority, 2);
RtlInitializeSid( SeAliasUsersSid, &SeNtAuthority, 2);
RtlInitializeSid( SeAliasGuestsSid, &SeNtAuthority, 2);
RtlInitializeSid( SeAliasPowerUsersSid, &SeNtAuthority, 2);
RtlInitializeSid( SeAliasAccountOpsSid, &SeNtAuthority, 2);
RtlInitializeSid( SeAliasSystemOpsSid, &SeNtAuthority, 2);
RtlInitializeSid( SeAliasPrintOpsSid, &SeNtAuthority, 2);
RtlInitializeSid( SeAliasBackupOpsSid, &SeNtAuthority, 2);
*(RtlSubAuthoritySid( SeDialupSid, 0 )) = SECURITY_DIALUP_RID;
*(RtlSubAuthoritySid( SeNetworkSid, 0 )) = SECURITY_NETWORK_RID;
*(RtlSubAuthoritySid( SeBatchSid, 0 )) = SECURITY_BATCH_RID;
*(RtlSubAuthoritySid( SeInteractiveSid, 0 )) = SECURITY_INTERACTIVE_RID;
*(RtlSubAuthoritySid( SeServiceSid, 0 )) = SECURITY_SERVICE_RID;
*(RtlSubAuthoritySid( SeLocalSystemSid, 0 )) = SECURITY_LOCAL_SYSTEM_RID;
*(RtlSubAuthoritySid( SeAliasAdminsSid, 0 )) = SECURITY_BUILTIN_DOMAIN_RID;
*(RtlSubAuthoritySid( SeAliasUsersSid, 0 )) = SECURITY_BUILTIN_DOMAIN_RID;
*(RtlSubAuthoritySid( SeAliasGuestsSid, 0 )) = SECURITY_BUILTIN_DOMAIN_RID;
*(RtlSubAuthoritySid( SeAliasPowerUsersSid, 0 )) = SECURITY_BUILTIN_DOMAIN_RID;
*(RtlSubAuthoritySid( SeAliasAccountOpsSid, 0 )) = SECURITY_BUILTIN_DOMAIN_RID;
*(RtlSubAuthoritySid( SeAliasSystemOpsSid, 0 )) = SECURITY_BUILTIN_DOMAIN_RID;
*(RtlSubAuthoritySid( SeAliasPrintOpsSid, 0 )) = SECURITY_BUILTIN_DOMAIN_RID;
*(RtlSubAuthoritySid( SeAliasBackupOpsSid, 0 )) = SECURITY_BUILTIN_DOMAIN_RID;
*(RtlSubAuthoritySid( SeAliasAdminsSid, 1 )) = DOMAIN_ALIAS_RID_ADMINS;
*(RtlSubAuthoritySid( SeAliasUsersSid, 1 )) = DOMAIN_ALIAS_RID_USERS;
*(RtlSubAuthoritySid( SeAliasGuestsSid, 1 )) = DOMAIN_ALIAS_RID_GUESTS;
*(RtlSubAuthoritySid( SeAliasPowerUsersSid, 1 )) = DOMAIN_ALIAS_RID_POWER_USERS;
*(RtlSubAuthoritySid( SeAliasAccountOpsSid, 1 )) = DOMAIN_ALIAS_RID_ACCOUNT_OPS;
*(RtlSubAuthoritySid( SeAliasSystemOpsSid, 1 )) = DOMAIN_ALIAS_RID_SYSTEM_OPS;
*(RtlSubAuthoritySid( SeAliasPrintOpsSid, 1 )) = DOMAIN_ALIAS_RID_PRINT_OPS;
*(RtlSubAuthoritySid( SeAliasBackupOpsSid, 1 )) = DOMAIN_ALIAS_RID_BACKUP_OPS;
//
// Initialize system default dacl
//
SepInitSystemDacls();
//
// Initialize the well known privilege values
//
SeCreateTokenPrivilege =
RtlConvertLongToLuid(SE_CREATE_TOKEN_PRIVILEGE);
SeAssignPrimaryTokenPrivilege =
RtlConvertLongToLuid(SE_ASSIGNPRIMARYTOKEN_PRIVILEGE);
SeLockMemoryPrivilege =
RtlConvertLongToLuid(SE_LOCK_MEMORY_PRIVILEGE);
SeIncreaseQuotaPrivilege =
RtlConvertLongToLuid(SE_INCREASE_QUOTA_PRIVILEGE);
SeUnsolicitedInputPrivilege =
RtlConvertLongToLuid(SE_UNSOLICITED_INPUT_PRIVILEGE);
SeTcbPrivilege =
RtlConvertLongToLuid(SE_TCB_PRIVILEGE);
SeSecurityPrivilege =
RtlConvertLongToLuid(SE_SECURITY_PRIVILEGE);
SeTakeOwnershipPrivilege =
RtlConvertLongToLuid(SE_TAKE_OWNERSHIP_PRIVILEGE);
SeLoadDriverPrivilege =
RtlConvertLongToLuid(SE_LOAD_DRIVER_PRIVILEGE);
SeCreatePagefilePrivilege =
RtlConvertLongToLuid(SE_CREATE_PAGEFILE_PRIVILEGE);
SeIncreaseBasePriorityPrivilege =
RtlConvertLongToLuid(SE_INC_BASE_PRIORITY_PRIVILEGE);
SeSystemProfilePrivilege =
RtlConvertLongToLuid(SE_SYSTEM_PROFILE_PRIVILEGE);
SeSystemtimePrivilege =
RtlConvertLongToLuid(SE_SYSTEMTIME_PRIVILEGE);
SeProfileSingleProcessPrivilege =
RtlConvertLongToLuid(SE_PROF_SINGLE_PROCESS_PRIVILEGE);
SeCreatePermanentPrivilege =
RtlConvertLongToLuid(SE_CREATE_PERMANENT_PRIVILEGE);
SeBackupPrivilege =
RtlConvertLongToLuid(SE_BACKUP_PRIVILEGE);
SeRestorePrivilege =
RtlConvertLongToLuid(SE_RESTORE_PRIVILEGE);
SeShutdownPrivilege =
RtlConvertLongToLuid(SE_SHUTDOWN_PRIVILEGE);
SeDebugPrivilege =
RtlConvertLongToLuid(SE_DEBUG_PRIVILEGE);
SeAuditPrivilege =
RtlConvertLongToLuid(SE_AUDIT_PRIVILEGE);
SeSystemEnvironmentPrivilege =
RtlConvertLongToLuid(SE_SYSTEM_ENVIRONMENT_PRIVILEGE);
SeChangeNotifyPrivilege =
RtlConvertLongToLuid(SE_CHANGE_NOTIFY_PRIVILEGE);
SeRemoteShutdownPrivilege =
RtlConvertLongToLuid(SE_REMOTE_SHUTDOWN_PRIVILEGE);
//
// Initialize the SeExports structure for exporting all
// of the information we've created out of the kernel.
//
//
// Package these together for export
//
SepExports.SeNullSid = SeNullSid;
SepExports.SeWorldSid = SeWorldSid;
SepExports.SeLocalSid = SeLocalSid;
SepExports.SeCreatorOwnerSid = SeCreatorOwnerSid;
SepExports.SeCreatorGroupSid = SeCreatorGroupSid;
SepExports.SeNtAuthoritySid = SeNtAuthoritySid;
SepExports.SeDialupSid = SeDialupSid;
SepExports.SeNetworkSid = SeNetworkSid;
SepExports.SeBatchSid = SeBatchSid;
SepExports.SeInteractiveSid = SeInteractiveSid;
SepExports.SeLocalSystemSid = SeLocalSystemSid;
SepExports.SeAliasAdminsSid = SeAliasAdminsSid;
SepExports.SeAliasUsersSid = SeAliasUsersSid;
SepExports.SeAliasGuestsSid = SeAliasGuestsSid;
SepExports.SeAliasPowerUsersSid = SeAliasPowerUsersSid;
SepExports.SeAliasAccountOpsSid = SeAliasAccountOpsSid;
SepExports.SeAliasSystemOpsSid = SeAliasSystemOpsSid;
SepExports.SeAliasPrintOpsSid = SeAliasPrintOpsSid;
SepExports.SeAliasBackupOpsSid = SeAliasBackupOpsSid;
SepExports.SeCreateTokenPrivilege = SeCreateTokenPrivilege;
SepExports.SeAssignPrimaryTokenPrivilege = SeAssignPrimaryTokenPrivilege;
SepExports.SeLockMemoryPrivilege = SeLockMemoryPrivilege;
SepExports.SeIncreaseQuotaPrivilege = SeIncreaseQuotaPrivilege;
SepExports.SeUnsolicitedInputPrivilege = SeUnsolicitedInputPrivilege;
SepExports.SeTcbPrivilege = SeTcbPrivilege;
SepExports.SeSecurityPrivilege = SeSecurityPrivilege;
SepExports.SeTakeOwnershipPrivilege = SeTakeOwnershipPrivilege;
SepExports.SeLoadDriverPrivilege = SeLoadDriverPrivilege;
SepExports.SeCreatePagefilePrivilege = SeCreatePagefilePrivilege;
SepExports.SeIncreaseBasePriorityPrivilege = SeIncreaseBasePriorityPrivilege;
SepExports.SeSystemProfilePrivilege = SeSystemProfilePrivilege;
SepExports.SeSystemtimePrivilege = SeSystemtimePrivilege;
SepExports.SeProfileSingleProcessPrivilege = SeProfileSingleProcessPrivilege;
SepExports.SeCreatePermanentPrivilege = SeCreatePermanentPrivilege;
SepExports.SeBackupPrivilege = SeBackupPrivilege;
SepExports.SeRestorePrivilege = SeRestorePrivilege;
SepExports.SeShutdownPrivilege = SeShutdownPrivilege;
SepExports.SeDebugPrivilege = SeDebugPrivilege;
SepExports.SeAuditPrivilege = SeAuditPrivilege;
SepExports.SeSystemEnvironmentPrivilege = SeSystemEnvironmentPrivilege;
SepExports.SeChangeNotifyPrivilege = SeChangeNotifyPrivilege;
SepExports.SeRemoteShutdownPrivilege = SeRemoteShutdownPrivilege;
SeExports = &SepExports;
//
// Initialize frequently used privilege sets to speed up access
// validation.
//
SepInitializePrivilegeSets();
return TRUE;
}
VOID
SepInitSystemDacls( VOID )
/*++
Routine Description:
This function initializes the system's default dacls & security
descriptors.
Arguments:
None.
Return Value:
None.
--*/
{
NTSTATUS
Status;
ULONG
PublicLength,
SystemLength,
PublicOpenLength;
PAGED_CODE();
//
// Set up a default ACLs
//
// Public: WORLD:execute, SYSTEM:all, ADMINS:all
// Public Open: WORLD:(Read|Write|Execute), ADMINS:(all), SYSTEM:all
// System: SYSTEM:all, ADMINS:(read|execute|read_control)
SystemLength = (ULONG)sizeof(ACL) +
(2*((ULONG)sizeof(ACCESS_ALLOWED_ACE))) +
SeLengthSid( SeLocalSystemSid ) +
SeLengthSid( SeAliasAdminsSid ) +
8; // The 8 is just for good measure
PublicLength = SystemLength +
((ULONG)sizeof(ACCESS_ALLOWED_ACE)) +
SeLengthSid( SeWorldSid );
PublicOpenLength = PublicLength;
SePublicDefaultDacl = (PACL)ExAllocatePoolWithTag(PagedPool, PublicLength, 'cAeS');
SePublicOpenDacl = (PACL)ExAllocatePoolWithTag(PagedPool, PublicOpenLength, 'cAeS');
SeSystemDefaultDacl = (PACL)ExAllocatePoolWithTag(PagedPool, SystemLength, 'cAeS');
ASSERT(SePublicDefaultDacl != NULL);
ASSERT(SePublicOpenDacl != NULL);
ASSERT(SeSystemDefaultDacl != NULL);
Status = RtlCreateAcl( SePublicDefaultDacl, PublicLength, ACL_REVISION2);
ASSERT( NT_SUCCESS(Status) );
Status = RtlCreateAcl( SePublicOpenDacl, PublicOpenLength, ACL_REVISION2);
ASSERT( NT_SUCCESS(Status) );
Status = RtlCreateAcl( SeSystemDefaultDacl, SystemLength, ACL_REVISION2);
ASSERT( NT_SUCCESS(Status) );
//
// WORLD access (Public DACLs only)
//
Status = RtlAddAccessAllowedAce (
SePublicDefaultDacl,
ACL_REVISION2,
GENERIC_EXECUTE,
SeWorldSid
);
ASSERT( NT_SUCCESS(Status) );
Status = RtlAddAccessAllowedAce (
SePublicOpenDacl,
ACL_REVISION2,
(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE),
SeWorldSid
);
ASSERT( NT_SUCCESS(Status) );
//
// SYSTEM access (PublicDefault, PublicOpen, and SystemDefault)
//
Status = RtlAddAccessAllowedAce (
SePublicDefaultDacl,
ACL_REVISION2,
GENERIC_ALL,
SeLocalSystemSid
);
ASSERT( NT_SUCCESS(Status) );
Status = RtlAddAccessAllowedAce (
SePublicOpenDacl,
ACL_REVISION2,
GENERIC_ALL,
SeLocalSystemSid
);
ASSERT( NT_SUCCESS(Status) );
Status = RtlAddAccessAllowedAce (
SeSystemDefaultDacl,
ACL_REVISION2,
GENERIC_ALL,
SeLocalSystemSid
);
ASSERT( NT_SUCCESS(Status) );
//
// ADMINISTRATORS access (PublicDefault, PublicOpen, and SystemDefault)
//
Status = RtlAddAccessAllowedAce (
SePublicDefaultDacl,
ACL_REVISION2,
GENERIC_ALL,
SeAliasAdminsSid
);
ASSERT( NT_SUCCESS(Status) );
Status = RtlAddAccessAllowedAce (
SePublicOpenDacl,
ACL_REVISION2,
GENERIC_ALL,
SeAliasAdminsSid
);
ASSERT( NT_SUCCESS(Status) );
Status = RtlAddAccessAllowedAce (
SeSystemDefaultDacl,
ACL_REVISION2,
GENERIC_READ | GENERIC_EXECUTE | READ_CONTROL,
SeAliasAdminsSid
);
ASSERT( NT_SUCCESS(Status) );
//
// Now initialize security descriptors
// that export this protection
//
SePublicDefaultSd = (PSECURITY_DESCRIPTOR)&SepPublicDefaultSd;
Status = RtlCreateSecurityDescriptor(
SePublicDefaultSd,
SECURITY_DESCRIPTOR_REVISION1
);
ASSERT( NT_SUCCESS(Status) );
Status = RtlSetDaclSecurityDescriptor(
SePublicDefaultSd,
TRUE, // DaclPresent
SePublicDefaultDacl,
FALSE // DaclDefaulted
);
ASSERT( NT_SUCCESS(Status) );
SePublicOpenSd = (PSECURITY_DESCRIPTOR)&SepPublicOpenSd;
Status = RtlCreateSecurityDescriptor(
SePublicOpenSd,
SECURITY_DESCRIPTOR_REVISION1
);
ASSERT( NT_SUCCESS(Status) );
Status = RtlSetDaclSecurityDescriptor(
SePublicOpenSd,
TRUE, // DaclPresent
SePublicOpenDacl,
FALSE // DaclDefaulted
);
ASSERT( NT_SUCCESS(Status) );
SeSystemDefaultSd = (PSECURITY_DESCRIPTOR)&SepSystemDefaultSd;
Status = RtlCreateSecurityDescriptor(
SeSystemDefaultSd,
SECURITY_DESCRIPTOR_REVISION1
);
ASSERT( NT_SUCCESS(Status) );
Status = RtlSetDaclSecurityDescriptor(
SeSystemDefaultSd,
TRUE, // DaclPresent
SeSystemDefaultDacl,
FALSE // DaclDefaulted
);
ASSERT( NT_SUCCESS(Status) );
return;
}
VOID
SepInitializePrivilegeSets( VOID )
/*++
Routine Description:
This routine is called once during system initialization to pre-allocate
and initialize some commonly used privilege sets.
Arguments:
None
Return Value:
None.
--*/
{
PAGED_CODE();
SinglePrivilegeSetSize = sizeof( PRIVILEGE_SET );
DoublePrivilegeSetSize = sizeof( PRIVILEGE_SET ) +
(ULONG)sizeof( LUID_AND_ATTRIBUTES );
SepSystemSecurityPrivilegeSet = ExAllocatePoolWithTag( PagedPool, SinglePrivilegeSetSize, 'rPeS' );
SepTakeOwnershipPrivilegeSet = ExAllocatePoolWithTag( PagedPool, SinglePrivilegeSetSize, 'rPeS' );
SepDoublePrivilegeSet = ExAllocatePoolWithTag( PagedPool, DoublePrivilegeSetSize, 'rPeS' );
SepSystemSecurityPrivilegeSet->PrivilegeCount = 1;
SepSystemSecurityPrivilegeSet->Control = 0;
SepSystemSecurityPrivilegeSet->Privilege[0].Luid = SeSecurityPrivilege;
SepSystemSecurityPrivilegeSet->Privilege[0].Attributes = SE_PRIVILEGE_USED_FOR_ACCESS;
SepTakeOwnershipPrivilegeSet->PrivilegeCount = 1;
SepTakeOwnershipPrivilegeSet->Control = 0;
SepTakeOwnershipPrivilegeSet->Privilege[0].Luid = SeTakeOwnershipPrivilege;
SepTakeOwnershipPrivilegeSet->Privilege[0].Attributes = SE_PRIVILEGE_USED_FOR_ACCESS;
SepDoublePrivilegeSet->PrivilegeCount = 2;
SepDoublePrivilegeSet->Control = 0;
SepDoublePrivilegeSet->Privilege[0].Luid = SeSecurityPrivilege;
SepDoublePrivilegeSet->Privilege[0].Attributes = SE_PRIVILEGE_USED_FOR_ACCESS;
SepDoublePrivilegeSet->Privilege[1].Luid = SeTakeOwnershipPrivilege;
SepDoublePrivilegeSet->Privilege[1].Attributes = SE_PRIVILEGE_USED_FOR_ACCESS;
}
VOID
SepAssemblePrivileges(
IN ULONG PrivilegeCount,
IN BOOLEAN SystemSecurity,
IN BOOLEAN WriteOwner,
OUT PPRIVILEGE_SET *Privileges
)
/*++
Routine Description:
This routine takes the results of the various privilege checks
in SeAccessCheck and returns an appropriate privilege set.
Arguments:
PrivilegeCount - The number of privileges granted.
SystemSecurity - Provides a boolean indicating whether to put
SeSecurityPrivilege into the output privilege set.
WriteOwner - Provides a boolean indicating whether to put
SeTakeOwnershipPrivilege into the output privilege set.
Privileges - Supplies a pointer that will return the privilege
set. Should be freed with ExFreePool when no longer needed.
Return Value:
None.
--*/
{
PPRIVILEGE_SET PrivilegeSet;
ULONG SizeRequired;
PAGED_CODE();
ASSERT( (PrivilegeCount != 0) && (PrivilegeCount <= 2) );
if ( !ARGUMENT_PRESENT( Privileges ) ) {
return;
}
if ( PrivilegeCount == 1 ) {
SizeRequired = SinglePrivilegeSetSize;
if ( SystemSecurity ) {
PrivilegeSet = SepSystemSecurityPrivilegeSet;
} else {
ASSERT( WriteOwner );
PrivilegeSet = SepTakeOwnershipPrivilegeSet;
}
} else {
SizeRequired = DoublePrivilegeSetSize;
PrivilegeSet = SepDoublePrivilegeSet;
}
*Privileges = ExAllocatePoolWithTag( PagedPool, SizeRequired, 'rPeS' );
if ( *Privileges != NULL ) {
RtlMoveMemory (
*Privileges,
PrivilegeSet,
SizeRequired
);
}
}
BOOLEAN
SepInitializeWorkList(
VOID
)
/*++
Routine Description:
Initializes the mutex and list head used to queue work from the
Executive to LSA. This mechanism operates on top of the normal ExWorkerThread
mechanism by capturing the first thread to perform LSA work and keeping it
until all the current work is done.
The reduces the number of worker threads that are blocked on I/O to LSA.
Arguments:
None.
Return Value:
TRUE if successful, FALSE otherwise.
--*/
{
PAGED_CODE();
ExInitializeResource(&SepLsaQueueLock);
InitializeListHead(&SepLsaQueue);
return( TRUE );
}
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