reactos/ntoskrnl/se/sid.c

   1 /* $Id: sid.c,v 1.4 2000/04/15 23:14:32 ekohl Exp $
   2  *
   3  * COPYRIGHT:         See COPYING in the top level directory
   4  * PROJECT:           ReactOS kernel
   5  * PURPOSE:           Security manager
   6  * FILE:              ntoskrnl/se/sid.c
   7  * PROGRAMER:         David Welch <welch@cwcom.net>
   8  * REVISION HISTORY:
   9  *                 26/07/98: Added stubs for security functions
  10  */
  11
  12 /* INCLUDES *****************************************************************/
  13
  14 #include <ddk/ntddk.h>
  15
  16 #include <internal/debug.h>
  17
  18 /* FUNCTIONS ***************************************************************/
  19
  20 BOOLEAN STDCALL RtlValidSid (PSID Sid)
  21 {
  22    if ((Sid->Revision & 0xf) != 1)
  23      {
  24         return(FALSE);
  25      }
  26    if (Sid->SubAuthorityCount > 15)
  27      {
  28         return(FALSE);
  29      }
  30    return(TRUE);
  31 }
  32
  33 ULONG STDCALL RtlLengthRequiredSid (UCHAR SubAuthorityCount)
  34 {
  35    return(sizeof(SID) + (SubAuthorityCount - 1) * sizeof(ULONG));
  36 }
  37
  38 NTSTATUS STDCALL RtlInitializeSid (PSID Sid,
  39                           PSID_IDENTIFIER_AUTHORITY IdentifierAuthority,
  40                           UCHAR SubAuthorityCount)
  41 {
  42    Sid->Revision = 1;
  43    Sid->SubAuthorityCount = SubAuthorityCount;
  44    memcpy(&Sid->IdentifierAuthority, IdentifierAuthority,
  45           sizeof(SID_IDENTIFIER_AUTHORITY));
  46    return(STATUS_SUCCESS);
  47 }
  48
  49 PULONG STDCALL RtlSubAuthoritySid (PSID Sid, ULONG SubAuthority)
  50 {
  51    return(&Sid->SubAuthority[SubAuthority]);
  52 }
  53
  54 PUCHAR STDCALL RtlSubAuthorityCountSid (PSID Sid)
  55 {
  56    return(&Sid->SubAuthorityCount);
  57 }
  58
  59 BOOLEAN STDCALL RtlEqualSid (PSID Sid1, PSID Sid2)
  60 {
  61    if (Sid1->Revision != Sid2->Revision)
  62      {
  63         return(FALSE);
  64      }
  65    if ((*RtlSubAuthorityCountSid(Sid1)) !=
  66        (*RtlSubAuthorityCountSid(Sid2)))
  67      {
  68         return(FALSE);
  69      }
  70    if (memcmp(Sid1, Sid2, RtlLengthSid(Sid1) != 0))
  71      {
  72         return(FALSE);
  73      }
  74    return(TRUE);
  75 }
  76
  77 ULONG STDCALL RtlLengthSid (PSID Sid)
  78 {
  79    return(sizeof(SID) + (Sid->SubAuthorityCount-1)*4);
  80 }
  81
  82 NTSTATUS STDCALL RtlCopySid (ULONG BufferLength, PSID Dest, PSID Src)
  83 {
  84    if (BufferLength < RtlLengthSid(Src))
  85      {
  86         return(STATUS_UNSUCCESSFUL);
  87      }
  88    memmove(Dest, Src, RtlLengthSid(Src));
  89    return(STATUS_SUCCESS);
  90 }
  91
  92 /* EOF */