ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Sweden-Number/dlls/ntdll/sec.c

1738 lines
49 KiB
C
Raw Blame History

/*
* Security functions
*
* Copyright 1996-1998 Marcus Meissner
* Copyright 2003 CodeWeavers Inc. (Ulrich Czekalla)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include <math.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "wine/exception.h"
#include "ntdll_misc.h"
#include "excpt.h"
#include "wine/library.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
#define NT_SUCCESS(status) (status == STATUS_SUCCESS)
/* helper function to copy an ACL */
static BOOLEAN copy_acl(DWORD nDestinationAclLength, PACL pDestinationAcl, PACL pSourceAcl)
{
DWORD size;
if (!pSourceAcl || !RtlValidAcl(pSourceAcl))
return FALSE;
size = ((ACL *)pSourceAcl)->AclSize;
if (nDestinationAclLength < size)
return FALSE;
memmove(pDestinationAcl, pSourceAcl, size);
return TRUE;
}
/* generically adds an ACE to an ACL */
static NTSTATUS add_access_ace(PACL pAcl, DWORD dwAceRevision, DWORD dwAceFlags,
DWORD dwAccessMask, PSID pSid, DWORD dwAceType)
{
ACE_HEADER *pAceHeader;
DWORD dwLengthSid;
DWORD dwAceSize;
DWORD *pAccessMask;
DWORD *pSidStart;
if (!RtlValidSid(pSid))
return STATUS_INVALID_SID;
if (pAcl->AclRevision > MAX_ACL_REVISION || dwAceRevision > MAX_ACL_REVISION)
return STATUS_REVISION_MISMATCH;
if (!RtlValidAcl(pAcl))
return STATUS_INVALID_ACL;
if (!RtlFirstFreeAce(pAcl, &pAceHeader))
return STATUS_INVALID_ACL;
if (!pAceHeader)
return STATUS_ALLOTTED_SPACE_EXCEEDED;
/* calculate generic size of the ACE */
dwLengthSid = RtlLengthSid(pSid);
dwAceSize = sizeof(ACE_HEADER) + sizeof(DWORD) + dwLengthSid;
if ((char *)pAceHeader + dwAceSize > (char *)pAcl + pAcl->AclSize)
return STATUS_ALLOTTED_SPACE_EXCEEDED;
/* fill the new ACE */
pAceHeader->AceType = dwAceType;
pAceHeader->AceFlags = dwAceFlags;
pAceHeader->AceSize = dwAceSize;
/* skip past the ACE_HEADER of the ACE */
pAccessMask = (DWORD *)(pAceHeader + 1);
*pAccessMask = dwAccessMask;
/* skip past ACE->Mask */
pSidStart = pAccessMask + 1;
RtlCopySid(dwLengthSid, (PSID)pSidStart, pSid);
pAcl->AclRevision = max(pAcl->AclRevision, dwAceRevision);
pAcl->AceCount++;
return STATUS_SUCCESS;
}
/*
* SID FUNCTIONS
*/
/******************************************************************************
* RtlAllocateAndInitializeSid [NTDLL.@]
*
*/
NTSTATUS WINAPI RtlAllocateAndInitializeSid (
PSID_IDENTIFIER_AUTHORITY pIdentifierAuthority,
BYTE nSubAuthorityCount,
DWORD nSubAuthority0, DWORD nSubAuthority1,
DWORD nSubAuthority2, DWORD nSubAuthority3,
DWORD nSubAuthority4, DWORD nSubAuthority5,
DWORD nSubAuthority6, DWORD nSubAuthority7,
PSID *pSid )
{
SID *tmp_sid;
TRACE("(%p, 0x%04x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,%p)\n",
pIdentifierAuthority,nSubAuthorityCount,
nSubAuthority0, nSubAuthority1, nSubAuthority2, nSubAuthority3,
nSubAuthority4, nSubAuthority5, nSubAuthority6, nSubAuthority7, pSid);
if (nSubAuthorityCount > 8) return STATUS_INVALID_SID;
if (!(tmp_sid= RtlAllocateHeap( GetProcessHeap(), 0,
RtlLengthRequiredSid(nSubAuthorityCount))))
return STATUS_NO_MEMORY;
tmp_sid->Revision = SID_REVISION;
if (pIdentifierAuthority)
memcpy(&tmp_sid->IdentifierAuthority, pIdentifierAuthority, sizeof(SID_IDENTIFIER_AUTHORITY));
tmp_sid->SubAuthorityCount = nSubAuthorityCount;
switch( nSubAuthorityCount )
{
case 8: tmp_sid->SubAuthority[7]= nSubAuthority7;
case 7: tmp_sid->SubAuthority[6]= nSubAuthority6;
case 6: tmp_sid->SubAuthority[5]= nSubAuthority5;
case 5: tmp_sid->SubAuthority[4]= nSubAuthority4;
case 4: tmp_sid->SubAuthority[3]= nSubAuthority3;
case 3: tmp_sid->SubAuthority[2]= nSubAuthority2;
case 2: tmp_sid->SubAuthority[1]= nSubAuthority1;
case 1: tmp_sid->SubAuthority[0]= nSubAuthority0;
break;
}
*pSid = tmp_sid;
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlEqualSid [NTDLL.@]
*
* Determine if two SIDs are equal.
*
* PARAMS
* pSid1 [I] Source SID
* pSid2 [I] SID to compare with
*
* RETURNS
* TRUE, if pSid1 is equal to pSid2,
* FALSE otherwise.
*/
BOOL WINAPI RtlEqualSid( PSID pSid1, PSID pSid2 )
{
if (!RtlValidSid(pSid1) || !RtlValidSid(pSid2))
return FALSE;
if (*RtlSubAuthorityCountSid(pSid1) != *RtlSubAuthorityCountSid(pSid2))
return FALSE;
if (memcmp(pSid1, pSid2, RtlLengthSid(pSid1)) != 0)
return FALSE;
return TRUE;
}
/******************************************************************************
* RtlEqualPrefixSid [NTDLL.@]
*/
BOOL WINAPI RtlEqualPrefixSid (PSID pSid1, PSID pSid2)
{
if (!RtlValidSid(pSid1) || !RtlValidSid(pSid2))
return FALSE;
if (*RtlSubAuthorityCountSid(pSid1) != *RtlSubAuthorityCountSid(pSid2))
return FALSE;
if (memcmp(pSid1, pSid2, RtlLengthRequiredSid(((SID*)pSid1)->SubAuthorityCount - 1)) != 0)
return FALSE;
return TRUE;
}
/******************************************************************************
* RtlFreeSid [NTDLL.@]
*
* Free the resources used by a SID.
*
* PARAMS
* pSid [I] SID to Free.
*
* RETURNS
* STATUS_SUCCESS.
*/
DWORD WINAPI RtlFreeSid(PSID pSid)
{
TRACE("(%p)\n", pSid);
RtlFreeHeap( GetProcessHeap(), 0, pSid );
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlLengthRequiredSid [NTDLL.@]
*
* Determine the amount of memory a SID will use
*
* PARAMS
* nrofsubauths [I] Number of Sub Authorities in the SID.
*
* RETURNS
* The size, in bytes, of a SID with nrofsubauths Sub Authorities.
*/
DWORD WINAPI RtlLengthRequiredSid(DWORD nrofsubauths)
{
return (nrofsubauths-1)*sizeof(DWORD) + sizeof(SID);
}
/**************************************************************************
* RtlLengthSid [NTDLL.@]
*
* Determine the amount of memory a SID is using
*
* PARAMS
* pSid [I] SID to get the size of.
*
* RETURNS
* The size, in bytes, of pSid.
*/
DWORD WINAPI RtlLengthSid(PSID pSid)
{
TRACE("sid=%p\n",pSid);
if (!pSid) return 0;
return RtlLengthRequiredSid(*RtlSubAuthorityCountSid(pSid));
}
/**************************************************************************
* RtlInitializeSid [NTDLL.@]
*
* Initialise a SID.
*
* PARAMS
* pSid [I] SID to initialise
* pIdentifierAuthority [I] Identifier Authority
* nSubAuthorityCount [I] Number of Sub Authorities
*
* RETURNS
* Success: TRUE. pSid is initialised with the details given.
* Failure: FALSE, if nSubAuthorityCount is >= SID_MAX_SUB_AUTHORITIES.
*/
BOOL WINAPI RtlInitializeSid(
PSID pSid,
PSID_IDENTIFIER_AUTHORITY pIdentifierAuthority,
BYTE nSubAuthorityCount)
{
int i;
SID* pisid=pSid;
if (nSubAuthorityCount >= SID_MAX_SUB_AUTHORITIES)
return FALSE;
pisid->Revision = SID_REVISION;
pisid->SubAuthorityCount = nSubAuthorityCount;
if (pIdentifierAuthority)
memcpy(&pisid->IdentifierAuthority, pIdentifierAuthority, sizeof (SID_IDENTIFIER_AUTHORITY));
for (i = 0; i < nSubAuthorityCount; i++)
*RtlSubAuthoritySid(pSid, i) = 0;
return TRUE;
}
/**************************************************************************
* RtlSubAuthoritySid [NTDLL.@]
*
* Return the Sub Authority of a SID
*
* PARAMS
* pSid [I] SID to get the Sub Authority from.
* nSubAuthority [I] Sub Authority number.
*
* RETURNS
* A pointer to The Sub Authority value of pSid.
*/
LPDWORD WINAPI RtlSubAuthoritySid( PSID pSid, DWORD nSubAuthority )
{
return &(((SID*)pSid)->SubAuthority[nSubAuthority]);
}
/**************************************************************************
* RtlIdentifierAuthoritySid [NTDLL.@]
*
* Return the Identifier Authority of a SID.
*
* PARAMS
* pSid [I] SID to get the Identifier Authority from.
*
* RETURNS
* A pointer to the Identifier Authority value of pSid.
*/
PSID_IDENTIFIER_AUTHORITY WINAPI RtlIdentifierAuthoritySid( PSID pSid )
{
return &(((SID*)pSid)->IdentifierAuthority);
}
/**************************************************************************
* RtlSubAuthorityCountSid [NTDLL.@]
*
* Get the number of Sub Authorities in a SID.
*
* PARAMS
* pSid [I] SID to get the count from.
*
* RETURNS
* A pointer to the Sub Authority count of pSid.
*/
LPBYTE WINAPI RtlSubAuthorityCountSid(PSID pSid)
{
return &(((SID*)pSid)->SubAuthorityCount);
}
/**************************************************************************
* RtlCopySid [NTDLL.@]
*/
BOOLEAN WINAPI RtlCopySid( DWORD nDestinationSidLength, PSID pDestinationSid, PSID pSourceSid )
{
if (!pSourceSid || !RtlValidSid(pSourceSid) ||
(nDestinationSidLength < RtlLengthSid(pSourceSid)))
return FALSE;
if (nDestinationSidLength < (((SID*)pSourceSid)->SubAuthorityCount*4+8))
return FALSE;
memmove(pDestinationSid, pSourceSid, ((SID*)pSourceSid)->SubAuthorityCount*4+8);
return TRUE;
}
/******************************************************************************
* RtlValidSid [NTDLL.@]
*
* Determine if a SID is valid.
*
* PARAMS
* pSid [I] SID to check
*
* RETURNS
* TRUE if pSid is valid,
* FALSE otherwise.
*/
BOOLEAN WINAPI RtlValidSid( PSID pSid )
{
BOOL ret;
__TRY
{
ret = TRUE;
if (!pSid || ((SID*)pSid)->Revision != SID_REVISION ||
((SID*)pSid)->SubAuthorityCount > SID_MAX_SUB_AUTHORITIES)
{
ret = FALSE;
}
}
__EXCEPT_PAGE_FAULT
{
WARN("(%p): invalid pointer!\n", pSid);
return FALSE;
}
__ENDTRY
return ret;
}
/*
* security descriptor functions
*/
/**************************************************************************
* RtlCreateSecurityDescriptor [NTDLL.@]
*
* Initialise a SECURITY_DESCRIPTOR.
*
* PARAMS
* lpsd [O] Descriptor to initialise.
* rev [I] Revision, must be set to SECURITY_DESCRIPTOR_REVISION.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: STATUS_UNKNOWN_REVISION if rev is incorrect.
*/
NTSTATUS WINAPI RtlCreateSecurityDescriptor(
PSECURITY_DESCRIPTOR lpsd,
DWORD rev)
{
if (rev!=SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION;
memset(lpsd,'\0',sizeof(SECURITY_DESCRIPTOR));
((SECURITY_DESCRIPTOR*)lpsd)->Revision = SECURITY_DESCRIPTOR_REVISION;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlCopySecurityDescriptor [NTDLL.@]
*
* Copies an absolute or sefl-relative SECURITY_DESCRIPTOR.
*
* PARAMS
* pSourceSD [O] SD to copy from.
* pDestinationSD [I] Destination SD.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: STATUS_UNKNOWN_REVISION if rev is incorrect.
*/
NTSTATUS WINAPI RtlCopySecurityDescriptor(PSECURITY_DESCRIPTOR pSourceSD, PSECURITY_DESCRIPTOR pDestinationSD)
{
SECURITY_DESCRIPTOR *srcSD = (SECURITY_DESCRIPTOR *)pSourceSD;
SECURITY_DESCRIPTOR *destSD = (SECURITY_DESCRIPTOR *)pDestinationSD;
PSID Owner, Group;
PACL Dacl, Sacl;
BOOLEAN defaulted, present;
DWORD length;
BOOL isSelfRelative = srcSD->Control & SE_SELF_RELATIVE;
if (srcSD->Revision != SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION;
/* copy initial data */
destSD->Revision = srcSD->Revision;
destSD->Sbz1 = srcSD->Sbz1;
destSD->Control = srcSD->Control;
/* copy Owner */
RtlGetOwnerSecurityDescriptor(pSourceSD, &Owner, &defaulted);
length = RtlLengthSid(Owner);
if (isSelfRelative)
{
destSD->Owner = srcSD->Owner;
RtlCopySid(length, (LPBYTE)destSD + (DWORD)destSD->Owner, Owner);
}
else
{
destSD->Owner = RtlAllocateHeap(GetProcessHeap(), 0, length);
RtlCopySid(length, destSD->Owner, Owner);
}
/* copy Group */
RtlGetGroupSecurityDescriptor(pSourceSD, &Group, &defaulted);
length = RtlLengthSid(Group);
if (isSelfRelative)
{
destSD->Group = srcSD->Group;
RtlCopySid(length, (LPBYTE)destSD + (DWORD)destSD->Group, Group);
}
else
{
destSD->Group = RtlAllocateHeap(GetProcessHeap(), 0, length);
RtlCopySid(length, destSD->Group, Group);
}
/* copy Dacl */
if (srcSD->Control & SE_DACL_PRESENT)
{
RtlGetDaclSecurityDescriptor(pSourceSD, &present, &Dacl, &defaulted);
length = Dacl->AclSize;
if (isSelfRelative)
{
destSD->Dacl = srcSD->Dacl;
copy_acl(length, (PACL)((LPBYTE)destSD + (DWORD)destSD->Dacl), Dacl);
}
else
{
destSD->Dacl = RtlAllocateHeap(GetProcessHeap(), 0, length);
copy_acl(length, destSD->Dacl, Dacl);
}
}
/* copy Sacl */
if (srcSD->Control & SE_SACL_PRESENT)
{
RtlGetSaclSecurityDescriptor(pSourceSD, &present, &Sacl, &defaulted);
length = Sacl->AclSize;
if (isSelfRelative)
{
destSD->Sacl = srcSD->Sacl;
copy_acl(length, (PACL)((LPBYTE)destSD + (DWORD)destSD->Sacl), Sacl);
}
else
{
destSD->Sacl = RtlAllocateHeap(GetProcessHeap(), 0, length);
copy_acl(length, destSD->Sacl, Sacl);
}
}
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlValidSecurityDescriptor [NTDLL.@]
*
* Determine if a SECURITY_DESCRIPTOR is valid.
*
* PARAMS
* SecurityDescriptor [I] Descriptor to check.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: STATUS_INVALID_SECURITY_DESCR or STATUS_UNKNOWN_REVISION.
*/
NTSTATUS WINAPI RtlValidSecurityDescriptor(
PSECURITY_DESCRIPTOR SecurityDescriptor)
{
if ( ! SecurityDescriptor )
return STATUS_INVALID_SECURITY_DESCR;
if ( ((SECURITY_DESCRIPTOR*)SecurityDescriptor)->Revision != SECURITY_DESCRIPTOR_REVISION )
return STATUS_UNKNOWN_REVISION;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlLengthSecurityDescriptor [NTDLL.@]
*/
ULONG WINAPI RtlLengthSecurityDescriptor(
PSECURITY_DESCRIPTOR pSecurityDescriptor)
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
ULONG offset = 0;
ULONG Size = SECURITY_DESCRIPTOR_MIN_LENGTH;
if ( lpsd == NULL )
return 0;
if ( lpsd->Control & SE_SELF_RELATIVE)
offset = (ULONG) lpsd;
if ( lpsd->Owner != NULL )
Size += RtlLengthSid((PSID)((LPBYTE)lpsd->Owner + offset));
if ( lpsd->Group != NULL )
Size += RtlLengthSid((PSID)((LPBYTE)lpsd->Group + offset));
if ( (lpsd->Control & SE_SACL_PRESENT) &&
lpsd->Sacl != NULL )
Size += ((PACL)((LPBYTE)lpsd->Sacl + offset))->AclSize;
if ( (lpsd->Control & SE_DACL_PRESENT) &&
lpsd->Dacl != NULL )
Size += ((PACL)((LPBYTE)lpsd->Dacl + offset))->AclSize;
return Size;
}
/******************************************************************************
* RtlGetDaclSecurityDescriptor [NTDLL.@]
*
*/
NTSTATUS WINAPI RtlGetDaclSecurityDescriptor(
IN PSECURITY_DESCRIPTOR pSecurityDescriptor,
OUT PBOOLEAN lpbDaclPresent,
OUT PACL *pDacl,
OUT PBOOLEAN lpbDaclDefaulted)
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
TRACE("(%p,%p,%p,%p)\n",
pSecurityDescriptor, lpbDaclPresent, pDacl, lpbDaclDefaulted);
if (lpsd->Revision != SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION ;
if ( (*lpbDaclPresent = (SE_DACL_PRESENT & lpsd->Control) ? 1 : 0) )
{
if ( SE_SELF_RELATIVE & lpsd->Control)
*pDacl = (PACL) ((LPBYTE)lpsd + (DWORD)lpsd->Dacl);
else
*pDacl = lpsd->Dacl;
*lpbDaclDefaulted = (( SE_DACL_DEFAULTED & lpsd->Control ) ? 1 : 0);
}
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlSetDaclSecurityDescriptor [NTDLL.@]
*/
NTSTATUS WINAPI RtlSetDaclSecurityDescriptor (
PSECURITY_DESCRIPTOR pSecurityDescriptor,
BOOLEAN daclpresent,
PACL dacl,
BOOLEAN dacldefaulted )
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
if (lpsd->Revision!=SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION;
if (lpsd->Control & SE_SELF_RELATIVE)
return STATUS_INVALID_SECURITY_DESCR;
if (!daclpresent)
{ lpsd->Control &= ~SE_DACL_PRESENT;
return TRUE;
}
lpsd->Control |= SE_DACL_PRESENT;
lpsd->Dacl = dacl;
if (dacldefaulted)
lpsd->Control |= SE_DACL_DEFAULTED;
else
lpsd->Control &= ~SE_DACL_DEFAULTED;
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlGetSaclSecurityDescriptor [NTDLL.@]
*
*/
NTSTATUS WINAPI RtlGetSaclSecurityDescriptor(
IN PSECURITY_DESCRIPTOR pSecurityDescriptor,
OUT PBOOLEAN lpbSaclPresent,
OUT PACL *pSacl,
OUT PBOOLEAN lpbSaclDefaulted)
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
TRACE("(%p,%p,%p,%p)\n",
pSecurityDescriptor, lpbSaclPresent, *pSacl, lpbSaclDefaulted);
if (lpsd->Revision != SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION;
if ( (*lpbSaclPresent = (SE_SACL_PRESENT & lpsd->Control) ? 1 : 0) )
{
if (SE_SELF_RELATIVE & lpsd->Control)
*pSacl = (PACL) ((LPBYTE)lpsd + (DWORD)lpsd->Sacl);
else
*pSacl = lpsd->Sacl;
*lpbSaclDefaulted = (( SE_SACL_DEFAULTED & lpsd->Control ) ? 1 : 0);
}
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlSetSaclSecurityDescriptor [NTDLL.@]
*/
NTSTATUS WINAPI RtlSetSaclSecurityDescriptor (
PSECURITY_DESCRIPTOR pSecurityDescriptor,
BOOLEAN saclpresent,
PACL sacl,
BOOLEAN sacldefaulted)
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
if (lpsd->Revision!=SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION;
if (lpsd->Control & SE_SELF_RELATIVE)
return STATUS_INVALID_SECURITY_DESCR;
if (!saclpresent) {
lpsd->Control &= ~SE_SACL_PRESENT;
return 0;
}
lpsd->Control |= SE_SACL_PRESENT;
lpsd->Sacl = sacl;
if (sacldefaulted)
lpsd->Control |= SE_SACL_DEFAULTED;
else
lpsd->Control &= ~SE_SACL_DEFAULTED;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlGetOwnerSecurityDescriptor [NTDLL.@]
*/
NTSTATUS WINAPI RtlGetOwnerSecurityDescriptor(
PSECURITY_DESCRIPTOR pSecurityDescriptor,
PSID *Owner,
PBOOLEAN OwnerDefaulted)
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
if ( !lpsd || !Owner || !OwnerDefaulted )
return STATUS_INVALID_PARAMETER;
if (lpsd->Owner != NULL)
{
if (lpsd->Control & SE_SELF_RELATIVE)
*Owner = (PSID)((LPBYTE)lpsd +
(ULONG)lpsd->Owner);
else
*Owner = lpsd->Owner;
if ( lpsd->Control & SE_OWNER_DEFAULTED )
*OwnerDefaulted = TRUE;
else
*OwnerDefaulted = FALSE;
}
else
*Owner = NULL;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlSetOwnerSecurityDescriptor [NTDLL.@]
*/
NTSTATUS WINAPI RtlSetOwnerSecurityDescriptor(
PSECURITY_DESCRIPTOR pSecurityDescriptor,
PSID owner,
BOOLEAN ownerdefaulted)
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
if (lpsd->Revision!=SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION;
if (lpsd->Control & SE_SELF_RELATIVE)
return STATUS_INVALID_SECURITY_DESCR;
lpsd->Owner = owner;
if (ownerdefaulted)
lpsd->Control |= SE_OWNER_DEFAULTED;
else
lpsd->Control &= ~SE_OWNER_DEFAULTED;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlSetGroupSecurityDescriptor [NTDLL.@]
*/
NTSTATUS WINAPI RtlSetGroupSecurityDescriptor (
PSECURITY_DESCRIPTOR pSecurityDescriptor,
PSID group,
BOOLEAN groupdefaulted)
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
if (lpsd->Revision!=SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION;
if (lpsd->Control & SE_SELF_RELATIVE)
return STATUS_INVALID_SECURITY_DESCR;
lpsd->Group = group;
if (groupdefaulted)
lpsd->Control |= SE_GROUP_DEFAULTED;
else
lpsd->Control &= ~SE_GROUP_DEFAULTED;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlGetGroupSecurityDescriptor [NTDLL.@]
*/
NTSTATUS WINAPI RtlGetGroupSecurityDescriptor(
PSECURITY_DESCRIPTOR pSecurityDescriptor,
PSID *Group,
PBOOLEAN GroupDefaulted)
{
SECURITY_DESCRIPTOR* lpsd=pSecurityDescriptor;
if ( !lpsd || !Group || !GroupDefaulted )
return STATUS_INVALID_PARAMETER;
if (lpsd->Group != NULL)
{
if (lpsd->Control & SE_SELF_RELATIVE)
*Group = (PSID)((LPBYTE)lpsd +
(ULONG)lpsd->Group);
else
*Group = lpsd->Group;
if ( lpsd->Control & SE_GROUP_DEFAULTED )
*GroupDefaulted = TRUE;
else
*GroupDefaulted = FALSE;
}
else
*Group = NULL;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlMakeSelfRelativeSD [NTDLL.@]
*/
NTSTATUS WINAPI RtlMakeSelfRelativeSD(
IN PSECURITY_DESCRIPTOR pAbsoluteSecurityDescriptor,
IN PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor,
IN OUT LPDWORD lpdwBufferLength)
{
ULONG offsetRel;
ULONG length;
SECURITY_DESCRIPTOR* pAbs = pAbsoluteSecurityDescriptor;
SECURITY_DESCRIPTOR* pRel = pSelfRelativeSecurityDescriptor;
TRACE(" %p %p %p(%d)\n", pAbs, pRel, lpdwBufferLength,
lpdwBufferLength ? *lpdwBufferLength: -1);
if (!lpdwBufferLength || !pAbs)
return STATUS_INVALID_PARAMETER;
length = RtlLengthSecurityDescriptor(pAbs);
if (*lpdwBufferLength < length)
{
*lpdwBufferLength = length;
return STATUS_BUFFER_TOO_SMALL;
}
if (!pRel)
return STATUS_INVALID_PARAMETER;
if (pAbs->Control & SE_SELF_RELATIVE)
{
memcpy(pRel, pAbs, length);
return STATUS_SUCCESS;
}
pRel->Revision = pAbs->Revision;
pRel->Sbz1 = pAbs->Sbz1;
pRel->Control = pAbs->Control | SE_SELF_RELATIVE;
offsetRel = sizeof(SECURITY_DESCRIPTOR);
pRel->Owner = (PSID) offsetRel;
length = RtlLengthSid(pAbs->Owner);
memcpy((LPBYTE)pRel + offsetRel, pAbs->Owner, length);
offsetRel += length;
pRel->Group = (PSID) offsetRel;
length = RtlLengthSid(pAbs->Group);
memcpy((LPBYTE)pRel + offsetRel, pAbs->Group, length);
if (pRel->Control & SE_SACL_PRESENT)
{
offsetRel += length;
pRel->Sacl = (PACL) offsetRel;
length = pAbs->Sacl->AclSize;
memcpy((LPBYTE)pRel + offsetRel, pAbs->Sacl, length);
}
else
{
pRel->Sacl = NULL;
}
if (pRel->Control & SE_DACL_PRESENT)
{
offsetRel += length;
pRel->Dacl = (PACL) offsetRel;
length = pAbs->Dacl->AclSize;
memcpy((LPBYTE)pRel + offsetRel, pAbs->Dacl, length);
}
else
{
pRel->Dacl = NULL;
}
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlSelfRelativeToAbsoluteSD [NTDLL.@]
*/
NTSTATUS WINAPI RtlSelfRelativeToAbsoluteSD(
IN PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor,
OUT PSECURITY_DESCRIPTOR pAbsoluteSecurityDescriptor,
OUT LPDWORD lpdwAbsoluteSecurityDescriptorSize,
OUT PACL pDacl,
OUT LPDWORD lpdwDaclSize,
OUT PACL pSacl,
OUT LPDWORD lpdwSaclSize,
OUT PSID pOwner,
OUT LPDWORD lpdwOwnerSize,
OUT PSID pPrimaryGroup,
OUT LPDWORD lpdwPrimaryGroupSize)
{
NTSTATUS status = STATUS_SUCCESS;
SECURITY_DESCRIPTOR* pAbs = pAbsoluteSecurityDescriptor;
SECURITY_DESCRIPTOR* pRel = pSelfRelativeSecurityDescriptor;
if (!pRel ||
!lpdwAbsoluteSecurityDescriptorSize ||
!lpdwDaclSize ||
!lpdwSaclSize ||
!lpdwOwnerSize ||
!lpdwPrimaryGroupSize ||
~pRel->Control & SE_SELF_RELATIVE)
return STATUS_INVALID_PARAMETER;
/* Confirm buffers are sufficiently large */
if (*lpdwAbsoluteSecurityDescriptorSize < sizeof(SECURITY_DESCRIPTOR))
{
*lpdwAbsoluteSecurityDescriptorSize = sizeof(SECURITY_DESCRIPTOR);
status = STATUS_BUFFER_TOO_SMALL;
}
if (pRel->Control & SE_DACL_PRESENT &&
*lpdwDaclSize < ((PACL)((LPBYTE)pRel->Dacl + (ULONG)pRel))->AclSize)
{
*lpdwDaclSize = ((PACL)((LPBYTE)pRel->Dacl + (ULONG)pRel))->AclSize;
status = STATUS_BUFFER_TOO_SMALL;
}
if (pRel->Control & SE_SACL_PRESENT &&
*lpdwSaclSize < ((PACL)((LPBYTE)pRel->Sacl + (ULONG)pRel))->AclSize)
{
*lpdwSaclSize = ((PACL)((LPBYTE)pRel->Sacl + (ULONG)pRel))->AclSize;
status = STATUS_BUFFER_TOO_SMALL;
}
if (pRel->Owner &&
*lpdwOwnerSize < RtlLengthSid((PSID)((LPBYTE)pRel->Owner + (ULONG)pRel)))
{
*lpdwOwnerSize = RtlLengthSid((PSID)((LPBYTE)pRel->Owner + (ULONG)pRel));
status = STATUS_BUFFER_TOO_SMALL;
}
if (pRel->Group &&
*lpdwPrimaryGroupSize < RtlLengthSid((PSID)((LPBYTE)pRel->Group + (ULONG)pRel)))
{
*lpdwPrimaryGroupSize = RtlLengthSid((PSID)((LPBYTE)pRel->Group + (ULONG)pRel));
status = STATUS_BUFFER_TOO_SMALL;
}
if (status != STATUS_SUCCESS)
return status;
/* Copy structures */
pAbs->Revision = pRel->Revision;
pAbs->Control = pRel->Control & ~SE_SELF_RELATIVE;
if (pRel->Control & SE_SACL_PRESENT)
{
PACL pAcl = (PACL)((LPBYTE)pRel->Sacl + (ULONG)pRel);
memcpy(pSacl, pAcl, pAcl->AclSize);
pAbs->Sacl = pSacl;
}
if (pRel->Control & SE_DACL_PRESENT)
{
PACL pAcl = (PACL)((LPBYTE)pRel->Dacl + (ULONG)pRel);
memcpy(pDacl, pAcl, pAcl->AclSize);
pAbs->Dacl = pDacl;
}
if (pRel->Owner)
{
PSID psid = (PSID)((LPBYTE)pRel->Owner + (ULONG)pRel);
memcpy(pOwner, psid, RtlLengthSid(psid));
pAbs->Owner = pOwner;
}
if (pRel->Group)
{
PSID psid = (PSID)((LPBYTE)pRel->Group + (ULONG)pRel);
memcpy(pPrimaryGroup, psid, RtlLengthSid(psid));
pAbs->Group = pPrimaryGroup;
}
return status;
}
/******************************************************************************
* RtlGetControlSecurityDescriptor (NTDLL.@)
*/
NTSTATUS WINAPI RtlGetControlSecurityDescriptor(
PSECURITY_DESCRIPTOR pSecurityDescriptor,
PSECURITY_DESCRIPTOR_CONTROL pControl,
LPDWORD lpdwRevision)
{
SECURITY_DESCRIPTOR *lpsd = pSecurityDescriptor;
TRACE("(%p,%p,%p)\n",pSecurityDescriptor,pControl,lpdwRevision);
*lpdwRevision = lpsd->Revision;
if (*lpdwRevision != SECURITY_DESCRIPTOR_REVISION)
return STATUS_UNKNOWN_REVISION;
*pControl = lpsd->Control;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlAbsoluteToSelfRelativeSD [NTDLL.@]
*/
NTSTATUS WINAPI RtlAbsoluteToSelfRelativeSD(
PSECURITY_DESCRIPTOR AbsoluteSecurityDescriptor,
PSECURITY_DESCRIPTOR SelfRelativeSecurityDescriptor,
PULONG BufferLength)
{
SECURITY_DESCRIPTOR *abs = AbsoluteSecurityDescriptor;
TRACE("%p %p %p\n", AbsoluteSecurityDescriptor,
SelfRelativeSecurityDescriptor, BufferLength);
if (abs->Control & SE_SELF_RELATIVE)
return STATUS_BAD_DESCRIPTOR_FORMAT;
return RtlMakeSelfRelativeSD(AbsoluteSecurityDescriptor,
SelfRelativeSecurityDescriptor, BufferLength);
}
/*
* access control list's
*/
/**************************************************************************
* RtlCreateAcl [NTDLL.@]
*
* NOTES
* This should return NTSTATUS
*/
NTSTATUS WINAPI RtlCreateAcl(PACL acl,DWORD size,DWORD rev)
{
TRACE("%p 0x%08x 0x%08x\n", acl, size, rev);
if (rev!=ACL_REVISION)
return STATUS_INVALID_PARAMETER;
if (size<sizeof(ACL))
return STATUS_BUFFER_TOO_SMALL;
if (size>0xFFFF)
return STATUS_INVALID_PARAMETER;
memset(acl,'\0',sizeof(ACL));
acl->AclRevision = rev;
acl->AclSize = size;
acl->AceCount = 0;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlFirstFreeAce [NTDLL.@]
* looks for the AceCount+1 ACE, and if it is still within the alloced
* ACL, return a pointer to it
*/
BOOLEAN WINAPI RtlFirstFreeAce(
PACL acl,
PACE_HEADER *x)
{
PACE_HEADER ace;
int i;
*x = 0;
ace = (PACE_HEADER)(acl+1);
for (i=0;i<acl->AceCount;i++) {
if ((BYTE *)ace >= (BYTE *)acl + acl->AclSize)
return 0;
ace = (PACE_HEADER)(((BYTE*)ace)+ace->AceSize);
}
if ((BYTE *)ace >= (BYTE *)acl + acl->AclSize)
return 0;
*x = ace;
return 1;
}
/**************************************************************************
* RtlAddAce [NTDLL.@]
*/
NTSTATUS WINAPI RtlAddAce(
PACL acl,
DWORD rev,
DWORD xnrofaces,
PACE_HEADER acestart,
DWORD acelen)
{
PACE_HEADER ace,targetace;
int nrofaces;
if (acl->AclRevision != ACL_REVISION)
return STATUS_INVALID_PARAMETER;
if (!RtlFirstFreeAce(acl,&targetace))
return STATUS_INVALID_PARAMETER;
nrofaces=0;ace=acestart;
while (((BYTE *)ace - (BYTE *)acestart) < acelen) {
nrofaces++;
ace = (PACE_HEADER)(((BYTE*)ace)+ace->AceSize);
}
if ((BYTE *)targetace + acelen > (BYTE *)acl + acl->AclSize) /* too much aces */
return STATUS_INVALID_PARAMETER;
memcpy((LPBYTE)targetace,acestart,acelen);
acl->AceCount+=nrofaces;
return STATUS_SUCCESS;
}
/**************************************************************************
* RtlDeleteAce [NTDLL.@]
*/
NTSTATUS WINAPI RtlDeleteAce(PACL pAcl, DWORD dwAceIndex)
{
NTSTATUS status;
PACE_HEADER pAce;
status = RtlGetAce(pAcl,dwAceIndex,(LPVOID*)&pAce);
if (STATUS_SUCCESS == status)
{
PACE_HEADER pcAce;
DWORD len = 0;
/* skip over the ACE we are deleting */
pcAce = (PACE_HEADER)(((BYTE*)pAce)+pAce->AceSize);
dwAceIndex++;
/* calculate the length of the rest */
for (; dwAceIndex < pAcl->AceCount; dwAceIndex++)
{
len += pcAce->AceSize;
pcAce = (PACE_HEADER)(((BYTE*)pcAce) + pcAce->AceSize);
}
/* slide them all backwards */
memmove(pAce, ((BYTE*)pAce)+pAce->AceSize, len);
pAcl->AceCount--;
}
TRACE("pAcl=%p dwAceIndex=%d status=0x%08x\n", pAcl, dwAceIndex, status);
return status;
}
/******************************************************************************
* RtlAddAccessAllowedAce [NTDLL.@]
*/
NTSTATUS WINAPI RtlAddAccessAllowedAce(
IN OUT PACL pAcl,
IN DWORD dwAceRevision,
IN DWORD AccessMask,
IN PSID pSid)
{
return RtlAddAccessAllowedAceEx( pAcl, dwAceRevision, 0, AccessMask, pSid);
}
/******************************************************************************
* RtlAddAccessAllowedAceEx [NTDLL.@]
*/
NTSTATUS WINAPI RtlAddAccessAllowedAceEx(
IN OUT PACL pAcl,
IN DWORD dwAceRevision,
IN DWORD AceFlags,
IN DWORD AccessMask,
IN PSID pSid)
{
TRACE("(%p,0x%08x,0x%08x,%p)\n", pAcl, dwAceRevision, AccessMask, pSid);
return add_access_ace(pAcl, dwAceRevision, AceFlags,
AccessMask, pSid, ACCESS_ALLOWED_ACE_TYPE);
}
/******************************************************************************
* RtlAddAccessDeniedAce [NTDLL.@]
*/
NTSTATUS WINAPI RtlAddAccessDeniedAce(
IN OUT PACL pAcl,
IN DWORD dwAceRevision,
IN DWORD AccessMask,
IN PSID pSid)
{
return RtlAddAccessDeniedAceEx( pAcl, dwAceRevision, 0, AccessMask, pSid);
}
/******************************************************************************
* RtlAddAccessDeniedAceEx [NTDLL.@]
*/
NTSTATUS WINAPI RtlAddAccessDeniedAceEx(
IN OUT PACL pAcl,
IN DWORD dwAceRevision,
IN DWORD AceFlags,
IN DWORD AccessMask,
IN PSID pSid)
{
TRACE("(%p,0x%08x,0x%08x,%p)\n", pAcl, dwAceRevision, AccessMask, pSid);
return add_access_ace(pAcl, dwAceRevision, AceFlags,
AccessMask, pSid, ACCESS_DENIED_ACE_TYPE);
}
/**************************************************************************
* RtlAddAuditAccessAce [NTDLL.@]
*/
NTSTATUS WINAPI RtlAddAuditAccessAce(
IN OUT PACL pAcl,
IN DWORD dwAceRevision,
IN DWORD dwAccessMask,
IN PSID pSid,
IN BOOL bAuditSuccess,
IN BOOL bAuditFailure)
{
DWORD dwAceFlags = 0;
TRACE("(%p,%d,%d,%p,%u,%u)\n",pAcl,dwAceRevision,dwAccessMask,
pSid,bAuditSuccess,bAuditFailure);
if (bAuditSuccess)
dwAceFlags |= SUCCESSFUL_ACCESS_ACE_FLAG;
if (bAuditFailure)
dwAceFlags |= FAILED_ACCESS_ACE_FLAG;
return add_access_ace(pAcl, dwAceRevision, dwAceFlags,
dwAccessMask, pSid, SYSTEM_AUDIT_ACE_TYPE);
}
/******************************************************************************
* RtlValidAcl [NTDLL.@]
*/
BOOLEAN WINAPI RtlValidAcl(PACL pAcl)
{
BOOLEAN ret;
TRACE("(%p)\n", pAcl);
__TRY
{
PACE_HEADER ace;
int i;
if (pAcl->AclRevision != ACL_REVISION)
ret = FALSE;
else
{
ace = (PACE_HEADER)(pAcl+1);
ret = TRUE;
for (i=0;i<=pAcl->AceCount;i++)
{
if ((char *)ace > (char *)pAcl + pAcl->AclSize)
{
ret = FALSE;
break;
}
ace = (PACE_HEADER)(((BYTE*)ace)+ace->AceSize);
}
}
}
__EXCEPT_PAGE_FAULT
{
WARN("(%p): invalid pointer!\n", pAcl);
return 0;
}
__ENDTRY
return ret;
}
/******************************************************************************
* RtlGetAce [NTDLL.@]
*/
NTSTATUS WINAPI RtlGetAce(PACL pAcl,DWORD dwAceIndex,LPVOID *pAce )
{
PACE_HEADER ace;
TRACE("(%p,%d,%p)\n",pAcl,dwAceIndex,pAce);
if ((dwAceIndex < 0) || (dwAceIndex > pAcl->AceCount))
return STATUS_INVALID_PARAMETER;
ace = (PACE_HEADER)(pAcl + 1);
for (;dwAceIndex;dwAceIndex--)
ace = (PACE_HEADER)(((BYTE*)ace)+ace->AceSize);
*pAce = (LPVOID) ace;
return STATUS_SUCCESS;
}
/*
* misc
*/
/******************************************************************************
* RtlAdjustPrivilege [NTDLL.@]
*
* Enables or disables a privilege from the calling thread or process.
*
* PARAMS
* Privilege [I] Privilege index to change.
* Enable [I] If TRUE, then enable the privilege otherwise disable.
* CurrentThread [I] If TRUE, then enable in calling thread, otherwise process.
* Enabled [O] Whether privilege was previously enabled or disabled.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: NTSTATUS code.
*
* SEE ALSO
* NtAdjustPrivilegesToken, NtOpenThreadToken, NtOpenProcessToken.
*
*/
NTSTATUS WINAPI
RtlAdjustPrivilege(ULONG Privilege,
BOOLEAN Enable,
BOOLEAN CurrentThread,
PBOOLEAN Enabled)
{
TOKEN_PRIVILEGES NewState;
TOKEN_PRIVILEGES OldState;
ULONG ReturnLength;
HANDLE TokenHandle;
NTSTATUS Status;
TRACE("(%d, %s, %s, %p)\n", Privilege, Enable ? "TRUE" : "FALSE",
CurrentThread ? "TRUE" : "FALSE", Enabled);
if (CurrentThread)
{
Status = NtOpenThreadToken(GetCurrentThread(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
FALSE,
&TokenHandle);
}
else
{
Status = NtOpenProcessToken(GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
&TokenHandle);
}
if (!NT_SUCCESS(Status))
{
WARN("Retrieving token handle failed (Status %x)\n", Status);
return Status;
}
OldState.PrivilegeCount = 1;
NewState.PrivilegeCount = 1;
NewState.Privileges[0].Luid.LowPart = Privilege;
NewState.Privileges[0].Luid.HighPart = 0;
NewState.Privileges[0].Attributes = (Enable) ? SE_PRIVILEGE_ENABLED : 0;
Status = NtAdjustPrivilegesToken(TokenHandle,
FALSE,
&NewState,
sizeof(TOKEN_PRIVILEGES),
&OldState,
&ReturnLength);
NtClose (TokenHandle);
if (Status == STATUS_NOT_ALL_ASSIGNED)
{
TRACE("Failed to assign all privileges\n");
return STATUS_PRIVILEGE_NOT_HELD;
}
if (!NT_SUCCESS(Status))
{
WARN("NtAdjustPrivilegesToken() failed (Status %x)\n", Status);
return Status;
}
if (OldState.PrivilegeCount == 0)
*Enabled = Enable;
else
*Enabled = (OldState.Privileges[0].Attributes & SE_PRIVILEGE_ENABLED);
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlImpersonateSelf [NTDLL.@]
*
* Makes an impersonation token that represents the process user and assigns
* to the current thread.
*
* PARAMS
* ImpersonationLevel [I] Level at which to impersonate.
*
* RETURNS
* Success: STATUS_SUCCESS.
* Failure: NTSTATUS code.
*/
NTSTATUS WINAPI
RtlImpersonateSelf(SECURITY_IMPERSONATION_LEVEL ImpersonationLevel)
{
NTSTATUS Status;
OBJECT_ATTRIBUTES ObjectAttributes;
HANDLE ProcessToken;
HANDLE ImpersonationToken;
TRACE("(%08x)\n", ImpersonationLevel);
Status = NtOpenProcessToken( NtCurrentProcess(), TOKEN_DUPLICATE,
&ProcessToken);
if (Status != STATUS_SUCCESS)
return Status;
InitializeObjectAttributes( &ObjectAttributes, NULL, 0, NULL, NULL );
Status = NtDuplicateToken( ProcessToken,
TOKEN_IMPERSONATE,
&ObjectAttributes,
ImpersonationLevel,
TokenImpersonation,
&ImpersonationToken );
if (Status != STATUS_SUCCESS)
{
NtClose( ProcessToken );
return Status;
}
Status = NtSetInformationThread( GetCurrentThread(),
ThreadImpersonationToken,
&ImpersonationToken,
sizeof(ImpersonationToken) );
NtClose( ImpersonationToken );
NtClose( ProcessToken );
return Status;
}
/******************************************************************************
* NtAccessCheck [NTDLL.@]
* ZwAccessCheck [NTDLL.@]
*
* Checks that a user represented by a token is allowed to access an object
* represented by a security descriptor.
*
* PARAMS
* SecurityDescriptor [I] The security descriptor of the object to check.
* ClientToken [I] Token of the user accessing the object.
* DesiredAccess [I] The desired access to the object.
* GenericMapping [I] Mapping used to transform access rights in the SD to their specific forms.
* PrivilegeSet [I/O] Privileges used during the access check.
* ReturnLength [O] Number of bytes stored into PrivilegeSet.
* GrantedAccess [O] The actual access rights granted.
* AccessStatus [O] The status of the access check.
*
* RETURNS
* NTSTATUS code.
*
* NOTES
* DesiredAccess may be MAXIMUM_ALLOWED, in which case the function determines
* the maximum access rights allowed by the SD and returns them in
* GrantedAccess.
* The SecurityDescriptor must have a valid owner and groups present,
* otherwise the function will fail.
*/
NTSTATUS WINAPI
NtAccessCheck(
PSECURITY_DESCRIPTOR SecurityDescriptor,
HANDLE ClientToken,
ACCESS_MASK DesiredAccess,
PGENERIC_MAPPING GenericMapping,
PPRIVILEGE_SET PrivilegeSet,
PULONG ReturnLength,
PULONG GrantedAccess,
NTSTATUS *AccessStatus)
{
NTSTATUS status;
TRACE("(%p, %p, %08x, %p, %p, %p, %p, %p)\n",
SecurityDescriptor, ClientToken, DesiredAccess, GenericMapping,
PrivilegeSet, ReturnLength, GrantedAccess, AccessStatus);
SERVER_START_REQ( access_check )
{
struct security_descriptor sd;
PSID owner;
PSID group;
PACL sacl;
PACL dacl;
BOOLEAN defaulted, present;
DWORD revision;
SECURITY_DESCRIPTOR_CONTROL control;
req->handle = ClientToken;
req->desired_access = DesiredAccess;
req->mapping_read = GenericMapping->GenericRead;
req->mapping_write = GenericMapping->GenericWrite;
req->mapping_execute = GenericMapping->GenericExecute;
req->mapping_all = GenericMapping->GenericAll;
/* marshal security descriptor */
RtlGetControlSecurityDescriptor( SecurityDescriptor, &control, &revision );
sd.control = control & ~SE_SELF_RELATIVE;
RtlGetOwnerSecurityDescriptor( SecurityDescriptor, &owner, &defaulted );
sd.owner_len = RtlLengthSid( owner );
RtlGetGroupSecurityDescriptor( SecurityDescriptor, &group, &defaulted );
sd.group_len = RtlLengthSid( group );
RtlGetSaclSecurityDescriptor( SecurityDescriptor, &present, &sacl, &defaulted );
sd.sacl_len = (present ? sacl->AclSize : 0);
RtlGetDaclSecurityDescriptor( SecurityDescriptor, &present, &dacl, &defaulted );
sd.dacl_len = (present ? dacl->AclSize : 0);
wine_server_add_data( req, &sd, sizeof(sd) );
wine_server_add_data( req, owner, sd.owner_len );
wine_server_add_data( req, group, sd.group_len );
wine_server_add_data( req, sacl, sd.sacl_len );
wine_server_add_data( req, dacl, sd.dacl_len );
wine_server_set_reply( req, &PrivilegeSet->Privilege, *ReturnLength - FIELD_OFFSET( PRIVILEGE_SET, Privilege ) );
status = wine_server_call( req );
*ReturnLength = FIELD_OFFSET( PRIVILEGE_SET, Privilege ) + reply->privileges_len;
PrivilegeSet->PrivilegeCount = reply->privileges_len / sizeof(LUID_AND_ATTRIBUTES);
if (status == STATUS_SUCCESS)
{
*AccessStatus = reply->access_status;
*GrantedAccess = reply->access_granted;
}
}
SERVER_END_REQ;
return status;
}
/******************************************************************************
* NtSetSecurityObject [NTDLL.@]
* ZwSetSecurityObject [NTDLL.@]
*
* Sets specified parts of the object's security descriptor.
*
* PARAMS
* Handle [I] Handle to the object to change security descriptor of.
* SecurityInformation [I] Specifies which parts of the security descriptor to set.
* SecurityDescriptor [I] New parts of a security descriptor for the object.
*
* RETURNS
* NTSTATUS code.
*
*/
NTSTATUS WINAPI NtSetSecurityObject(HANDLE Handle,
SECURITY_INFORMATION SecurityInformation,
PSECURITY_DESCRIPTOR SecurityDescriptor)
{
NTSTATUS status;
struct security_descriptor sd;
PACL dacl, sacl;
PSID owner, group;
BOOLEAN defaulted, present;
DWORD revision;
SECURITY_DESCRIPTOR_CONTROL control;
TRACE("%p 0x%08x %p\n", Handle, SecurityInformation, SecurityDescriptor);
if (!SecurityDescriptor) return STATUS_ACCESS_VIOLATION;
memset( &sd, 0, sizeof(sd) );
status = RtlGetControlSecurityDescriptor( SecurityDescriptor, &control, &revision );
if (status != STATUS_SUCCESS) return status;
sd.control = control & ~SE_SELF_RELATIVE;
if (SecurityInformation & OWNER_SECURITY_INFORMATION)
{
status = RtlGetOwnerSecurityDescriptor( SecurityDescriptor, &owner, &defaulted );
if (status != STATUS_SUCCESS) return status;
if (!(sd.owner_len = RtlLengthSid( owner )))
return STATUS_INVALID_SECURITY_DESCR;
}
if (SecurityInformation & GROUP_SECURITY_INFORMATION)
{
status = RtlGetGroupSecurityDescriptor( SecurityDescriptor, &group, &defaulted );
if (status != STATUS_SUCCESS) return status;
if (!(sd.group_len = RtlLengthSid( group )))
return STATUS_INVALID_SECURITY_DESCR;
}
if (SecurityInformation & SACL_SECURITY_INFORMATION)
{
status = RtlGetSaclSecurityDescriptor( SecurityDescriptor, &present, &sacl, &defaulted );
if (status != STATUS_SUCCESS) return status;
sd.sacl_len = (sacl && present) ? sacl->AclSize : 0;
sd.control |= SE_SACL_PRESENT;
}
if (SecurityInformation & DACL_SECURITY_INFORMATION)
{
status = RtlGetDaclSecurityDescriptor( SecurityDescriptor, &present, &dacl, &defaulted );
if (status != STATUS_SUCCESS) return status;
sd.dacl_len = (dacl && present) ? dacl->AclSize : 0;
sd.control |= SE_DACL_PRESENT;
}
SERVER_START_REQ( set_security_object )
{
req->handle = Handle;
req->security_info = SecurityInformation;
wine_server_add_data( req, &sd, sizeof(sd) );
wine_server_add_data( req, owner, sd.owner_len );
wine_server_add_data( req, group, sd.group_len );
wine_server_add_data( req, sacl, sd.sacl_len );
wine_server_add_data( req, dacl, sd.dacl_len );
status = wine_server_call( req );
}
SERVER_END_REQ;
return status;
}
/******************************************************************************
* RtlConvertSidToUnicodeString (NTDLL.@)
*
* The returned SID is used to access the USER registry hive usually
*
* the native function returns something like
* "S-1-5-21-0000000000-000000000-0000000000-500";
*/
NTSTATUS WINAPI RtlConvertSidToUnicodeString(
PUNICODE_STRING String,
PSID pSid,
BOOLEAN AllocateString)
{
static const WCHAR formatW[] = {'-','%','u',0};
WCHAR buffer[2 + 10 + 10 + 10 * SID_MAX_SUB_AUTHORITIES];
WCHAR *p = buffer;
const SID *sid = (const SID *)pSid;
DWORD i, len;
*p++ = 'S';
p += sprintfW( p, formatW, sid->Revision );
p += sprintfW( p, formatW, MAKELONG( MAKEWORD( sid->IdentifierAuthority.Value[5],
sid->IdentifierAuthority.Value[4] ),
MAKEWORD( sid->IdentifierAuthority.Value[3],
sid->IdentifierAuthority.Value[2] )));
for (i = 0; i < sid->SubAuthorityCount; i++)
p += sprintfW( p, formatW, sid->SubAuthority[i] );
len = (p + 1 - buffer) * sizeof(WCHAR);
String->Length = len - sizeof(WCHAR);
if (AllocateString)
{
String->MaximumLength = len;
if (!(String->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, len )))
return STATUS_NO_MEMORY;
}
else if (len > String->MaximumLength) return STATUS_BUFFER_OVERFLOW;
memcpy( String->Buffer, buffer, len );
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlQueryInformationAcl (NTDLL.@)
*/
NTSTATUS WINAPI RtlQueryInformationAcl(
PACL pAcl,
LPVOID pAclInformation,
DWORD nAclInformationLength,
ACL_INFORMATION_CLASS dwAclInformationClass)
{
NTSTATUS status = STATUS_SUCCESS;
TRACE("pAcl=%p pAclInfo=%p len=%d, class=%d\n",
pAcl, pAclInformation, nAclInformationLength, dwAclInformationClass);
switch (dwAclInformationClass)
{
case AclRevisionInformation:
{
PACL_REVISION_INFORMATION paclrev = (PACL_REVISION_INFORMATION) pAclInformation;
if (nAclInformationLength < sizeof(ACL_REVISION_INFORMATION))
status = STATUS_INVALID_PARAMETER;
else
paclrev->AclRevision = pAcl->AclRevision;
break;
}
case AclSizeInformation:
{
PACL_SIZE_INFORMATION paclsize = (PACL_SIZE_INFORMATION) pAclInformation;
if (nAclInformationLength < sizeof(ACL_SIZE_INFORMATION))
status = STATUS_INVALID_PARAMETER;
else
{
INT i;
PACE_HEADER ace;
paclsize->AceCount = pAcl->AceCount;
paclsize->AclBytesInUse = 0;
ace = (PACE_HEADER) (pAcl + 1);
for (i = 0; i < pAcl->AceCount; i++)
{
paclsize->AclBytesInUse += ace->AceSize;
ace = (PACE_HEADER)(((BYTE*)ace)+ace->AceSize);
}
if (pAcl->AclSize < paclsize->AclBytesInUse)
{
WARN("Acl has %d bytes free\n", paclsize->AclBytesFree);
paclsize->AclBytesFree = 0;
paclsize->AclBytesInUse = pAcl->AclSize;
}
else
paclsize->AclBytesFree = pAcl->AclSize - paclsize->AclBytesInUse;
}
break;
}
default:
WARN("Unknown AclInformationClass value: %d\n", dwAclInformationClass);
status = STATUS_INVALID_PARAMETER;
}
return status;
}
Reference in New Issue View Git Blame Copy Permalink