ReactOS  0.4.13-dev-235-g7373cb3
sidcache.c File Reference
#include "precomp.h"
#include <ntsecapi.h>
#include <debug.h>
Include dependency graph for sidcache.c:

Go to the source code of this file.

Classes

struct  _SIDCACHEMGR
 
struct  _SIDCACHECALLBACKINFO
 
struct  _SIDQUEUEENTRY
 
struct  _SIDCACHEENTRY
 

Macros

#define NDEBUG
 
#define HandleToScm(Handle)   (PSIDCACHEMGR)(Handle)
 
#define ScmToHandle(Scm)   (HANDLE)(Scm)
 

Typedefs

typedef struct _SIDCACHEMGR SIDCACHEMGR
 
typedef struct _SIDCACHEMGRPSIDCACHEMGR
 
typedef struct _SIDCACHECALLBACKINFO SIDCACHECALLBACKINFO
 
typedef struct _SIDCACHECALLBACKINFOPSIDCACHECALLBACKINFO
 
typedef struct _SIDQUEUEENTRY SIDQUEUEENTRY
 
typedef struct _SIDQUEUEENTRYPSIDQUEUEENTRY
 
typedef struct _SIDCACHEENTRY SIDCACHEENTRY
 
typedef struct _SIDCACHEENTRYPSIDCACHEENTRY
 

Functions

static VOID FreeQueueEntry (IN PSIDCACHEMGR scm, IN PSIDQUEUEENTRY QueueEntry)
 
static VOID FreeCacheEntry (IN PSIDCACHEMGR scm, IN PSIDCACHEENTRY CacheEntry)
 
static VOID CleanupSidCacheMgr (IN PSIDCACHEMGR scm)
 
static PSIDCACHEMGR ReferenceSidCacheMgr (IN HANDLE SidCacheMgr)
 
static VOID DereferenceSidCacheMgr (IN PSIDCACHEMGR scm)
 
static BOOL OpenLSAPolicyHandle (IN LPWSTR SystemName, IN ACCESS_MASK DesiredAccess, OUT PLSA_HANDLE PolicyHandle)
 
static BOOL LookupSidInformation (IN PSIDCACHEMGR scm, IN PSID pSid, OUT PSIDREQRESULT *ReqResult)
 
static BOOL FindSidInCache (IN PSIDCACHEMGR scm, IN PSID pSid, OUT PSIDREQRESULT *ReqResult)
 
static VOID CacheLookupResults (IN PSIDCACHEMGR scm, IN PSID pSid, IN PSIDREQRESULT ReqResult)
 
static DWORD WINAPI LookupThreadProc (IN LPVOID lpParameter)
 
HANDLE CreateSidCacheMgr (IN HANDLE Heap, IN LPCWSTR SystemName)
 
VOID DestroySidCacheMgr (IN HANDLE SidCacheMgr)
 
static BOOL QueueSidLookup (IN PSIDCACHEMGR scm, IN PSID pSid, IN PSIDREQCOMPLETIONPROC CompletionProc, IN PVOID Context)
 
VOID DequeueSidLookup (IN HANDLE SidCacheMgr, IN PSID pSid)
 
VOID ReferenceSidReqResult (IN HANDLE SidCacheMgr, IN PSIDREQRESULT ReqResult)
 
VOID DereferenceSidReqResult (IN HANDLE SidCacheMgr, IN PSIDREQRESULT ReqResult)
 
BOOL LookupSidCache (IN HANDLE SidCacheMgr, IN PSID pSid, IN PSIDREQCOMPLETIONPROC CompletionProc, IN PVOID Context)
 

Macro Definition Documentation

◆ HandleToScm

#define HandleToScm (   Handle)    (PSIDCACHEMGR)(Handle)

Definition at line 36 of file sidcache.c.

◆ NDEBUG

#define NDEBUG

Definition at line 33 of file sidcache.c.

◆ ScmToHandle

#define ScmToHandle (   Scm)    (HANDLE)(Scm)

Definition at line 37 of file sidcache.c.

Typedef Documentation

◆ PSIDCACHECALLBACKINFO

◆ PSIDCACHEENTRY

◆ PSIDCACHEMGR

◆ PSIDQUEUEENTRY

◆ SIDCACHECALLBACKINFO

◆ SIDCACHEENTRY

◆ SIDCACHEMGR

◆ SIDQUEUEENTRY

Function Documentation

◆ CacheLookupResults()

static VOID CacheLookupResults ( IN PSIDCACHEMGR  scm,
IN PSID  pSid,
IN PSIDREQRESULT  ReqResult 
)
static

Definition at line 395 of file sidcache.c.

398 {
399  PSIDCACHEENTRY CacheEntry;
400  DWORD SidLen;
401  SIZE_T AccountNameLen = 0;
402  SIZE_T DomainNameLen = 0;
403  SIZE_T CacheEntrySize = sizeof(SIDCACHEENTRY);
404 
405  /* NOTE: assumes the lists are locked! */
406 
407  SidLen = GetLengthSid(pSid);
408  CacheEntrySize += SidLen;
409 
410  AccountNameLen = wcslen(ReqResult->AccountName);
411  CacheEntrySize += (AccountNameLen + 1) * sizeof(WCHAR);
412 
413  DomainNameLen = wcslen(ReqResult->DomainName);
414  CacheEntrySize += (wcslen(ReqResult->DomainName) + 1) * sizeof(WCHAR);
415 
416  CacheEntry = HeapAlloc(scm->Heap,
417  0,
418  CacheEntrySize);
419  if (CacheEntry != NULL)
420  {
421  PWSTR lpBuf = (PWSTR)((ULONG_PTR)(CacheEntry + 1) + SidLen);
422 
423  CacheEntry->SidNameUse = ReqResult->SidNameUse;
424 
425  /* append the SID */
426  CopySid(SidLen,
427  (PSID)(CacheEntry + 1),
428  pSid);
429 
430  /* append the strings */
431  CacheEntry->AccountName = lpBuf;
432  wcscpy(lpBuf,
433  ReqResult->AccountName);
434  lpBuf += AccountNameLen + 1;
435 
436  CacheEntry->DomainName = lpBuf;
437  wcscpy(lpBuf,
438  ReqResult->DomainName);
439  lpBuf += DomainNameLen + 1;
440 
441  /* add the entry to the cache list */
442  InsertTailList(&scm->CacheListHead,
443  &CacheEntry->ListEntry);
444  }
445 }
PWSTR DomainName
Definition: sidcache.c:75
uint16_t * PWSTR
Definition: typedefs.h:54
struct _SIDCACHEENTRY SIDCACHEENTRY
#define InsertTailList(ListHead, Entry)
SID_NAME_USE SidNameUse
Definition: sidcache.c:73
uint32_t ULONG_PTR
Definition: typedefs.h:63
smooth NULL
Definition: ftsmooth.c:416
LIST_ENTRY ListEntry
Definition: sidcache.c:72
PVOID WINAPI HeapAlloc(HANDLE, DWORD, SIZE_T)
__wchar_t WCHAR
Definition: xmlstorage.h:180
DWORD WINAPI GetLengthSid(PSID pSid)
Definition: security.c:798
unsigned long DWORD
Definition: ntddk_ex.h:95
PWSTR AccountName
Definition: sidcache.c:74
_CRTIMP wchar_t *__cdecl wcscpy(_Out_writes_z_(_String_length_(_Source)+1) wchar_t *_Dest, _In_z_ const wchar_t *_Source)
ULONG_PTR SIZE_T
Definition: typedefs.h:78
static PSID pSid
Definition: security.c:74
BOOL WINAPI CopySid(DWORD nDestinationSidLength, PSID pDestinationSid, PSID pSourceSid)
Definition: security.c:591
size_t __cdecl wcslen(_In_z_ const wchar_t *_Str)

Referenced by LookupSidCache(), and LookupThreadProc().

◆ CleanupSidCacheMgr()

static VOID CleanupSidCacheMgr ( IN PSIDCACHEMGR  scm)
static

Definition at line 112 of file sidcache.c.

113 {
114  LsaClose(scm->LsaHandle);
115  CloseHandle(scm->LookupEvent);
116  CloseHandle(scm->LookupThread);
117 
118  /* delete the queue */
119  while (!IsListEmpty(&scm->QueueListHead))
120  {
121  PSIDQUEUEENTRY QueueEntry;
122 
123  QueueEntry = CONTAINING_RECORD(scm->QueueListHead.Flink,
125  ListEntry);
126  FreeQueueEntry(scm,
127  QueueEntry);
128  }
129 
130  /* delete the cache */
131  while (!IsListEmpty(&scm->CacheListHead))
132  {
133  PSIDCACHEENTRY CacheEntry;
134 
135  CacheEntry = CONTAINING_RECORD(scm->CacheListHead.Flink,
137  ListEntry);
138  FreeCacheEntry(scm,
139  CacheEntry);
140  }
141 
142  DeleteCriticalSection(&scm->Lock);
143 }
#define CloseHandle
Definition: compat.h:398
NTSTATUS WINAPI LsaClose(IN LSA_HANDLE ObjectHandle)
Definition: lsa.c:192
_Must_inspect_result_ FORCEINLINE BOOLEAN IsListEmpty(_In_ const LIST_ENTRY *ListHead)
Definition: rtlfuncs.h:57
static VOID FreeQueueEntry(IN PSIDCACHEMGR scm, IN PSIDQUEUEENTRY QueueEntry)
Definition: sidcache.c:81
PFLT_MESSAGE_WAITER_QUEUE CONTAINING_RECORD(Csq, DEVICE_EXTENSION, IrpQueue)) -> WaiterQ.mLock) _IRQL_raises_(DISPATCH_LEVEL) VOID NTAPI FltpAcquireMessageWaiterLock(_In_ PIO_CSQ Csq, _Out_ PKIRQL Irql)
Definition: Messaging.c:560
void WINAPI DeleteCriticalSection(PCRITICAL_SECTION)
static VOID FreeCacheEntry(IN PSIDCACHEMGR scm, IN PSIDCACHEENTRY CacheEntry)
Definition: sidcache.c:100

Referenced by LookupThreadProc().

◆ CreateSidCacheMgr()

HANDLE CreateSidCacheMgr ( IN HANDLE  Heap,
IN LPCWSTR  SystemName 
)

Definition at line 590 of file sidcache.c.

592 {
593  PSIDCACHEMGR scm;
594 
595  if (SystemName == NULL)
596  SystemName = L"";
597 
598  scm = HeapAlloc(Heap,
599  0,
601  SystemName[wcslen(SystemName) + 1]));
602  if (scm != NULL)
603  {
604  /* zero the static part of the structure */
605  ZeroMemory(scm,
607  SystemName));
608 
609  scm->RefCount = 1;
610  scm->Heap = Heap;
611 
612  wcscpy(scm->SystemName,
613  SystemName);
614 
618 
620  FALSE,
621  FALSE,
622  NULL);
623  if (scm->LookupEvent == NULL)
624  {
625  goto Cleanup;
626  }
627 
630  &scm->LsaHandle))
631  {
632  goto Cleanup;
633  }
634 
636  0,
638  scm,
639  0,
640  NULL);
641  if (scm->LookupThread == NULL)
642  {
643 Cleanup:
644  if (scm->LookupEvent != NULL)
645  {
646  CloseHandle(scm->LookupEvent);
647  }
648 
649  if (scm->LsaHandle != NULL)
650  {
651  LsaClose(scm->LsaHandle);
652  }
653 
654  HeapFree(Heap,
655  0,
656  scm);
657  scm = NULL;
658  }
659  }
660  else
661  {
663  }
664 
665  return (HANDLE)scm;
666 }
#define CreateEvent
Definition: winbase.h:3562
LIST_ENTRY QueueListHead
Definition: sidcache.c:44
HANDLE LookupThread
Definition: sidcache.c:49
#define CloseHandle
Definition: compat.h:398
volatile LONG RefCount
Definition: sidcache.c:41
#define POLICY_VIEW_LOCAL_INFORMATION
Definition: ntsecapi.h:61
static DWORD WINAPI LookupThreadProc(IN LPVOID lpParameter)
Definition: sidcache.c:449
NTSTATUS WINAPI LsaClose(IN LSA_HANDLE ObjectHandle)
Definition: lsa.c:192
#define ERROR_NOT_ENOUGH_MEMORY
Definition: dderror.h:7
static BOOL OpenLSAPolicyHandle(IN LPWSTR SystemName, IN ACCESS_MASK DesiredAccess, OUT PLSA_HANDLE PolicyHandle)
Definition: sidcache.c:172
#define ZeroMemory
Definition: winbase.h:1635
CRITICAL_SECTION Lock
Definition: sidcache.c:43
HANDLE WINAPI DECLSPEC_HOTPATCH CreateThread(IN LPSECURITY_ATTRIBUTES lpThreadAttributes, IN DWORD dwStackSize, IN LPTHREAD_START_ROUTINE lpStartAddress, IN LPVOID lpParameter, IN DWORD dwCreationFlags, OUT LPDWORD lpThreadId)
Definition: thread.c:111
VOID WINAPI InitializeCriticalSection(OUT LPCRITICAL_SECTION lpCriticalSection)
Definition: synch.c:697
smooth NULL
Definition: ftsmooth.c:416
#define POLICY_LOOKUP_NAMES
Definition: ntsecapi.h:72
LSA_HANDLE LsaHandle
Definition: sidcache.c:42
PVOID WINAPI HeapAlloc(HANDLE, DWORD, SIZE_T)
#define SetLastError(x)
Definition: compat.h:409
_CRTIMP wchar_t *__cdecl wcscpy(_Out_writes_z_(_String_length_(_Source)+1) wchar_t *_Dest, _In_z_ const wchar_t *_Source)
static const WCHAR L[]
Definition: oid.c:1250
static const WCHAR Cleanup[]
Definition: register.c:80
HANDLE Heap
Definition: sidcache.c:47
LIST_ENTRY CacheListHead
Definition: sidcache.c:46
#define InitializeListHead(ListHead)
Definition: env_spec_w32.h:944
#define FIELD_OFFSET(t, f)
Definition: typedefs.h:254
WCHAR SystemName[1]
Definition: sidcache.c:50
size_t __cdecl wcslen(_In_z_ const wchar_t *_Str)
#define HeapFree(x, y, z)
Definition: compat.h:394
HANDLE LookupEvent
Definition: sidcache.c:48

Referenced by CreateSecurityPage().

◆ DequeueSidLookup()

VOID DequeueSidLookup ( IN HANDLE  SidCacheMgr,
IN PSID  pSid 
)

Definition at line 786 of file sidcache.c.

788 {
789  PLIST_ENTRY CurrentEntry;
790  PSIDQUEUEENTRY QueueEntry;
791  PSIDCACHEMGR scm;
792 
793  scm = ReferenceSidCacheMgr(SidCacheMgr);
794  if (scm != NULL)
795  {
796  EnterCriticalSection(&scm->Lock);
797 
798  if (scm->QueueLookingUp != NULL &&
799  EqualSid(pSid,
800  (PSID)(scm->QueueLookingUp + 1)))
801  {
802  /* don't free the queue lookup item! this will be
803  done in the lookup thread */
804  scm->QueueLookingUp = NULL;
805  }
806  else
807  {
808  CurrentEntry = &scm->QueueListHead;
809  while (CurrentEntry != &scm->QueueListHead)
810  {
811  QueueEntry = CONTAINING_RECORD(CurrentEntry,
813  ListEntry);
814 
815  if (EqualSid(pSid,
816  (PSID)(QueueEntry + 1)))
817  {
818  FreeQueueEntry(scm,
819  QueueEntry);
820  break;
821  }
822 
823  CurrentEntry = CurrentEntry->Flink;
824  }
825  }
826 
827  LeaveCriticalSection(&scm->Lock);
828 
830  }
831 }
LIST_ENTRY QueueListHead
Definition: sidcache.c:44
static VOID DereferenceSidCacheMgr(IN PSIDCACHEMGR scm)
Definition: sidcache.c:161
BOOL WINAPI EqualSid(PSID pSid1, PSID pSid2)
Definition: security.c:708
CRITICAL_SECTION Lock
Definition: sidcache.c:43
void WINAPI EnterCriticalSection(LPCRITICAL_SECTION)
static VOID FreeQueueEntry(IN PSIDCACHEMGR scm, IN PSIDQUEUEENTRY QueueEntry)
Definition: sidcache.c:81
smooth NULL
Definition: ftsmooth.c:416
struct _SIDQUEUEENTRY * QueueLookingUp
Definition: sidcache.c:45
PFLT_MESSAGE_WAITER_QUEUE CONTAINING_RECORD(Csq, DEVICE_EXTENSION, IrpQueue)) -> WaiterQ.mLock) _IRQL_raises_(DISPATCH_LEVEL) VOID NTAPI FltpAcquireMessageWaiterLock(_In_ PIO_CSQ Csq, _Out_ PKIRQL Irql)
Definition: Messaging.c:560
struct _LIST_ENTRY * Flink
Definition: typedefs.h:119
static PSIDCACHEMGR ReferenceSidCacheMgr(IN HANDLE SidCacheMgr)
Definition: sidcache.c:147
Definition: typedefs.h:117
static PSID pSid
Definition: security.c:74
void WINAPI LeaveCriticalSection(LPCRITICAL_SECTION)

◆ DereferenceSidCacheMgr()

static VOID DereferenceSidCacheMgr ( IN PSIDCACHEMGR  scm)
static

Definition at line 161 of file sidcache.c.

162 {
163  if (InterlockedDecrement(&scm->RefCount) == 0)
164  {
165  /* Signal the lookup thread so it can terminate */
166  SetEvent(scm->LookupEvent);
167  }
168 }
BOOL WINAPI DECLSPEC_HOTPATCH SetEvent(IN HANDLE hEvent)
Definition: synch.c:679
#define InterlockedDecrement
Definition: armddk.h:52

Referenced by DequeueSidLookup(), DereferenceSidReqResult(), DestroySidCacheMgr(), LookupSidCache(), and ReferenceSidReqResult().

◆ DereferenceSidReqResult()

VOID DereferenceSidReqResult ( IN HANDLE  SidCacheMgr,
IN PSIDREQRESULT  ReqResult 
)

Definition at line 851 of file sidcache.c.

853 {
854  PSIDCACHEMGR scm;
855 
856  scm = ReferenceSidCacheMgr(SidCacheMgr);
857  if (scm != NULL)
858  {
859  if (InterlockedDecrement(&ReqResult->RefCount) == 0)
860  {
861  HeapFree(scm->Heap,
862  0,
863  ReqResult);
864  }
865 
867  }
868 }
static VOID DereferenceSidCacheMgr(IN PSIDCACHEMGR scm)
Definition: sidcache.c:161
smooth NULL
Definition: ftsmooth.c:416
static PSIDCACHEMGR ReferenceSidCacheMgr(IN HANDLE SidCacheMgr)
Definition: sidcache.c:147
#define InterlockedDecrement
Definition: armddk.h:52
HANDLE Heap
Definition: sidcache.c:47
#define HeapFree(x, y, z)
Definition: compat.h:394

Referenced by FreePrincipalsList(), LookupSidCache(), LookupThreadProc(), and UpdatePrincipalListItem().

◆ DestroySidCacheMgr()

VOID DestroySidCacheMgr ( IN HANDLE  SidCacheMgr)

Definition at line 670 of file sidcache.c.

671 {
672  PSIDCACHEMGR scm = HandleToScm(SidCacheMgr);
673 
674  if (scm != NULL)
675  {
676  /* remove the keep-alive reference */
678  }
679 }
static VOID DereferenceSidCacheMgr(IN PSIDCACHEMGR scm)
Definition: sidcache.c:161
smooth NULL
Definition: ftsmooth.c:416
#define HandleToScm(Handle)
Definition: sidcache.c:36

Referenced by CreateSecurityPage(), and DestroySecurityPage().

◆ FindSidInCache()

static BOOL FindSidInCache ( IN PSIDCACHEMGR  scm,
IN PSID  pSid,
OUT PSIDREQRESULT ReqResult 
)
static

Definition at line 329 of file sidcache.c.

332 {
333  PSIDCACHEENTRY CacheEntry;
334  PLIST_ENTRY CurrentEntry;
335  PSIDREQRESULT ReqRes;
336  BOOL Ret = FALSE;
337 
338  /* NOTE: assumes the lists are locked! */
339 
340  CurrentEntry = &scm->CacheListHead;
341  while (CurrentEntry != &scm->CacheListHead)
342  {
343  CacheEntry = CONTAINING_RECORD(CurrentEntry,
345  ListEntry);
346 
347  if (EqualSid(pSid,
348  (PSID)(CacheEntry + 1)))
349  {
350  SIZE_T ReqResultSize;
351  ULONG AccountNameLen, DomainNameLen;
352 
353  Ret = TRUE;
354 
355  AccountNameLen = wcslen(CacheEntry->AccountName);
356  DomainNameLen = wcslen(CacheEntry->DomainName);
357 
358  ReqResultSize = sizeof(SIDREQRESULT) +
359  (((AccountNameLen + 1) +
360  (DomainNameLen + 1)) * sizeof(WCHAR));
361 
362  ReqRes = HeapAlloc(scm->Heap,
363  0,
364  ReqResultSize);
365  if (ReqRes != NULL)
366  {
367  PWSTR Buffer = (PWSTR)(ReqRes + 1);
368 
369  ReqRes->RefCount = 1;
370 
371  ReqRes->AccountName = Buffer;
372  wcscpy(ReqRes->AccountName,
373  CacheEntry->AccountName);
374  Buffer += AccountNameLen + 1;
375 
376  ReqRes->DomainName = Buffer;
377  wcscpy(ReqRes->DomainName,
378  CacheEntry->DomainName);
379  }
380 
381  /* return the result, even if we weren't unable to
382  allocate enough memory! */
383  *ReqResult = ReqRes;
384  break;
385  }
386 
387  CurrentEntry = CurrentEntry->Flink;
388  }
389 
390  return Ret;
391 }
PWSTR DomainName
Definition: sidcache.c:75
#define TRUE
Definition: types.h:120
LONG RefCount
Definition: precomp.h:169
uint16_t * PWSTR
Definition: typedefs.h:54
BOOL WINAPI EqualSid(PSID pSid1, PSID pSid2)
Definition: security.c:708
unsigned int BOOL
Definition: ntddk_ex.h:94
LPWSTR DomainName
Definition: precomp.h:172
struct _SIDREQRESULT SIDREQRESULT
smooth NULL
Definition: ftsmooth.c:416
Definition: bufpool.h:45
PFLT_MESSAGE_WAITER_QUEUE CONTAINING_RECORD(Csq, DEVICE_EXTENSION, IrpQueue)) -> WaiterQ.mLock) _IRQL_raises_(DISPATCH_LEVEL) VOID NTAPI FltpAcquireMessageWaiterLock(_In_ PIO_CSQ Csq, _Out_ PKIRQL Irql)
Definition: Messaging.c:560
struct _LIST_ENTRY * Flink
Definition: typedefs.h:119
PVOID WINAPI HeapAlloc(HANDLE, DWORD, SIZE_T)
__wchar_t WCHAR
Definition: xmlstorage.h:180
PWSTR AccountName
Definition: sidcache.c:74
_CRTIMP wchar_t *__cdecl wcscpy(_Out_writes_z_(_String_length_(_Source)+1) wchar_t *_Dest, _In_z_ const wchar_t *_Source)
Definition: typedefs.h:117
ULONG_PTR SIZE_T
Definition: typedefs.h:78
static PSID pSid
Definition: security.c:74
LPWSTR AccountName
Definition: precomp.h:171
unsigned int ULONG
Definition: retypes.h:1
IN BOOLEAN OUT PSTR Buffer
Definition: progress.h:34
size_t __cdecl wcslen(_In_z_ const wchar_t *_Str)

Referenced by LookupSidCache(), and LookupThreadProc().

◆ FreeCacheEntry()

static VOID FreeCacheEntry ( IN PSIDCACHEMGR  scm,
IN PSIDCACHEENTRY  CacheEntry 
)
static

Definition at line 100 of file sidcache.c.

102 {
103  RemoveEntryList(&CacheEntry->ListEntry);
104 
105  HeapFree(scm->Heap,
106  0,
107  CacheEntry);
108 }
FORCEINLINE BOOLEAN RemoveEntryList(_In_ PLIST_ENTRY Entry)
Definition: rtlfuncs.h:105
#define HeapFree(x, y, z)
Definition: compat.h:394

Referenced by CleanupSidCacheMgr().

◆ FreeQueueEntry()

static VOID FreeQueueEntry ( IN PSIDCACHEMGR  scm,
IN PSIDQUEUEENTRY  QueueEntry 
)
static

Definition at line 81 of file sidcache.c.

83 {
84  if (QueueEntry->ListEntry.Flink != NULL)
85  {
86  RemoveEntryList(&QueueEntry->ListEntry);
87  }
88 
89  HeapFree(scm->Heap,
90  0,
91  QueueEntry->Callbacks);
92 
93  HeapFree(scm->Heap,
94  0,
95  QueueEntry);
96 }
FORCEINLINE BOOLEAN RemoveEntryList(_In_ PLIST_ENTRY Entry)
Definition: rtlfuncs.h:105
smooth NULL
Definition: ftsmooth.c:416
#define HeapFree(x, y, z)
Definition: compat.h:394

Referenced by CleanupSidCacheMgr(), DequeueSidLookup(), and LookupThreadProc().

◆ LookupSidCache()

BOOL LookupSidCache ( IN HANDLE  SidCacheMgr,
IN PSID  pSid,
IN PSIDREQCOMPLETIONPROC  CompletionProc,
IN PVOID  Context 
)

Definition at line 872 of file sidcache.c.

876 {
877  BOOL Found = FALSE;
878  PSIDREQRESULT ReqResult = NULL;
879  PSIDCACHEMGR scm;
880 
881  scm = ReferenceSidCacheMgr(SidCacheMgr);
882  if (scm != NULL)
883  {
884  EnterCriticalSection(&scm->Lock);
885 
886  /* search the cache */
887  Found = FindSidInCache(scm,
888  pSid,
889  &ReqResult);
890 
891  if (!Found)
892  {
893  /* the sid is not in the cache, queue it if not already queued */
894  if (!QueueSidLookup(scm,
895  pSid,
896  CompletionProc,
897  Context))
898  {
899  PSIDREQRESULT FoundReqResult = NULL;
900 
901  /* unable to queue it, look it up now */
902 
903  LeaveCriticalSection(&scm->Lock);
904 
905  /* lookup everything we need */
906  if (!LookupSidInformation(scm,
907  pSid,
908  &ReqResult))
909  {
910  ReqResult = NULL;
911  }
912 
913  EnterCriticalSection(&scm->Lock);
914 
915  /* see if the SID was added to the cache in the meanwhile */
916  if (!FindSidInCache(scm,
917  pSid,
918  &FoundReqResult))
919  {
920  if (ReqResult != NULL)
921  {
922  /* cache the results */
923  CacheLookupResults(scm,
924  pSid,
925  ReqResult);
926  }
927  }
928  else
929  {
930  if (ReqResult != NULL)
931  {
932  /* free the information of our lookup and use the cached
933  information*/
935  ReqResult);
936  }
937 
938  ReqResult = FoundReqResult;
939  }
940 
941  Found = (ReqResult != NULL);
942  }
943  }
944 
945  LeaveCriticalSection(&scm->Lock);
946 
947  /* call the completion callback */
948  if (Found)
949  {
950  CompletionProc(SidCacheMgr,
951  pSid,
952  ReqResult,
953  Context);
954 
955  if (ReqResult != NULL)
956  {
957  HeapFree(scm->Heap,
958  0,
959  ReqResult);
960  }
961  }
962 
964  }
965 
966  return Found;
967 }
static VOID DereferenceSidCacheMgr(IN PSIDCACHEMGR scm)
Definition: sidcache.c:161
static VOID CacheLookupResults(IN PSIDCACHEMGR scm, IN PSID pSid, IN PSIDREQRESULT ReqResult)
Definition: sidcache.c:395
CRITICAL_SECTION Lock
Definition: sidcache.c:43
void WINAPI EnterCriticalSection(LPCRITICAL_SECTION)
unsigned int BOOL
Definition: ntddk_ex.h:94
VOID DereferenceSidReqResult(IN HANDLE SidCacheMgr, IN PSIDREQRESULT ReqResult)
Definition: sidcache.c:851
static BOOL QueueSidLookup(IN PSIDCACHEMGR scm, IN PSID pSid, IN PSIDREQCOMPLETIONPROC CompletionProc, IN PVOID Context)
Definition: sidcache.c:683
smooth NULL
Definition: ftsmooth.c:416
return Found
Definition: dirsup.c:1270
static BOOL LookupSidInformation(IN PSIDCACHEMGR scm, IN PSID pSid, OUT PSIDREQRESULT *ReqResult)
Definition: sidcache.c:207
static PSIDCACHEMGR ReferenceSidCacheMgr(IN HANDLE SidCacheMgr)
Definition: sidcache.c:147
HANDLE Heap
Definition: sidcache.c:47
static PSID pSid
Definition: security.c:74
void WINAPI LeaveCriticalSection(LPCRITICAL_SECTION)
static BOOL FindSidInCache(IN PSIDCACHEMGR scm, IN PSID pSid, OUT PSIDREQRESULT *ReqResult)
Definition: sidcache.c:329
#define HeapFree(x, y, z)
Definition: compat.h:394

Referenced by AddPrincipalToList(), and ReloadPrincipalsList().

◆ LookupSidInformation()

static BOOL LookupSidInformation ( IN PSIDCACHEMGR  scm,
IN PSID  pSid,
OUT PSIDREQRESULT ReqResult 
)
static

Definition at line 207 of file sidcache.c.

210 {
211  PLSA_REFERENCED_DOMAIN_LIST ReferencedDomain;
213  PLSA_TRUST_INFORMATION Domain;
214  PLSA_UNICODE_STRING DomainName;
215  SID_NAME_USE SidNameUse = SidTypeUnknown;
216  PPOLICY_ACCOUNT_DOMAIN_INFO PolicyAccountDomainInfo = NULL;
218  DWORD AccountNameSize, DomainNameSize = 0;
219  PSIDREQRESULT ReqRet = NULL;
220  BOOL Ret = FALSE;
221 
222  Status = LsaLookupSids(scm->LsaHandle,
223  1,
224  &pSid,
225  &ReferencedDomain,
226  &Names);
227  if (NT_SUCCESS(Status))
228  {
229  SidNameUse = Names->Use;
230 
231  if (ReferencedDomain != NULL &&
232  Names->DomainIndex >= 0)
233  {
234  Domain = &ReferencedDomain->Domains[Names->DomainIndex];
235  DomainName = &Domain->Name;
236  }
237  else
238  {
239  Domain = NULL;
240  DomainName = NULL;
241  }
242 
243  switch (SidNameUse)
244  {
245  case SidTypeAlias:
246  {
247  if (Domain != NULL)
248  {
249  /* query the domain name for BUILTIN accounts */
250  Status = LsaQueryInformationPolicy(scm->LsaHandle,
252  (PVOID*)&PolicyAccountDomainInfo);
253  if (NT_SUCCESS(Status))
254  {
255  DomainName = &PolicyAccountDomainInfo->DomainName;
256 
257  /* make the user believe this is a group */
258  SidNameUse = (PolicyAccountDomainInfo != NULL ? SidTypeGroup : SidTypeUser);
259  }
260  }
261  break;
262  }
263 
264  default:
265  {
266  DPRINT("Unhandled SID type: 0x%x\n", Names->Use);
267  break;
268  }
269  }
270 
271  AccountNameSize = Names->Name.Length;
272  if (DomainName != NULL)
273  {
274  DomainNameSize = DomainName->Length;
275  }
276 
277  ReqRet = HeapAlloc(scm->Heap,
278  0,
279  sizeof(SIDREQRESULT) +
280  (((AccountNameSize + DomainNameSize) + 2) * sizeof(WCHAR)));
281  if (ReqRet != NULL)
282  {
283  ReqRet->RefCount = 1;
284  ReqRet->AccountName = (LPWSTR)(ReqRet + 1);
285  ReqRet->DomainName = ReqRet->AccountName + (AccountNameSize / sizeof(WCHAR)) + 1;
286 
287  CopyMemory(ReqRet->AccountName,
288  Names->Name.Buffer,
289  Names->Name.Length);
290 
291  if (DomainName != NULL)
292  {
293  CopyMemory(ReqRet->DomainName,
294  DomainName->Buffer,
295  DomainName->Length);
296  }
297 
298  ReqRet->AccountName[AccountNameSize / sizeof(WCHAR)] = L'\0';
299  ReqRet->DomainName[DomainNameSize / sizeof(WCHAR)] = L'\0';
300 
301  ReqRet->SidNameUse = SidNameUse;
302  }
303 
304  if (PolicyAccountDomainInfo != NULL)
305  {
306  LsaFreeMemory(PolicyAccountDomainInfo);
307  }
308 
309  LsaFreeMemory(ReferencedDomain);
311 
312  Ret = TRUE;
313  }
314  else if (Status == STATUS_NONE_MAPPED)
315  {
316  Ret = TRUE;
317  }
318 
319  if (Ret)
320  {
321  *ReqResult = ReqRet;
322  }
323 
324  return Ret;
325 }
PWSTR Names[NAMES_COUNT]
#define TRUE
Definition: types.h:120
enum _SID_NAME_USE SID_NAME_USE
LONG RefCount
Definition: precomp.h:169
NTSTATUS WINAPI LsaQueryInformationPolicy(IN LSA_HANDLE PolicyHandle, IN POLICY_INFORMATION_CLASS InformationClass, OUT PVOID *Buffer)
Definition: lsa.c:1471
PLSA_TRUST_INFORMATION Domains
Definition: ntsecapi.h:405
LONG NTSTATUS
Definition: precomp.h:26
NTSTATUS WINAPI LsaLookupSids(IN LSA_HANDLE PolicyHandle, IN ULONG Count, IN PSID *Sids, OUT PLSA_REFERENCED_DOMAIN_LIST *ReferencedDomains, OUT PLSA_TRANSLATED_NAME *Names)
Definition: lsa.c:1067
#define STATUS_NONE_MAPPED
Definition: ntstatus.h:337
unsigned int BOOL
Definition: ntddk_ex.h:94
LPWSTR DomainName
Definition: precomp.h:172
smooth NULL
Definition: ftsmooth.c:416
void DPRINT(...)
Definition: polytest.cpp:61
NTSTATUS WINAPI LsaFreeMemory(IN PVOID Buffer)
Definition: lsa.c:699
SID_NAME_USE SidNameUse
Definition: precomp.h:170
PVOID WINAPI HeapAlloc(HANDLE, DWORD, SIZE_T)
__wchar_t WCHAR
Definition: xmlstorage.h:180
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
#define CopyMemory
Definition: winbase.h:1633
LSA_UNICODE_STRING Name
Definition: ntsecapi.h:400
unsigned long DWORD
Definition: ntddk_ex.h:95
static const WCHAR L[]
Definition: oid.c:1250
Status
Definition: gdiplustypes.h:24
static PSID pSid
Definition: security.c:74
LSA_UNICODE_STRING DomainName
Definition: ntsecapi.h:563
LPWSTR AccountName
Definition: precomp.h:171
WCHAR * LPWSTR
Definition: xmlstorage.h:184

Referenced by LookupSidCache(), and LookupThreadProc().

◆ LookupThreadProc()

static DWORD WINAPI LookupThreadProc ( IN LPVOID  lpParameter)
static

Definition at line 449 of file sidcache.c.

450 {
453 
454  /* Reference the dll to avoid problems in case of accidental
455  FreeLibrary calls... */
456  if (!GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
458  &hModule))
459  {
460  hModule = NULL;
461  }
462 
463  while (scm->RefCount != 0)
464  {
465  PSIDQUEUEENTRY QueueEntry = NULL;
466 
467  EnterCriticalSection(&scm->Lock);
468 
469  /* get the first item of the queue */
470  if (scm->QueueListHead.Flink != &scm->QueueListHead)
471  {
472  QueueEntry = CONTAINING_RECORD(scm->QueueListHead.Flink,
474  ListEntry);
475  RemoveEntryList(&QueueEntry->ListEntry);
476  QueueEntry->ListEntry.Flink = NULL;
477  }
478  else
479  {
480  LeaveCriticalSection(&scm->Lock);
481 
482  /* wait for the next asynchronous lookup queued */
484  INFINITE);
485  continue;
486  }
487 
488  scm->QueueLookingUp = QueueEntry;
489 
490  LeaveCriticalSection(&scm->Lock);
491 
492  if (QueueEntry != NULL)
493  {
494  PSIDREQRESULT ReqResult, FoundReqResult;
495  PSID pSid = (PSID)(QueueEntry + 1);
496 
497  /* lookup the SID information */
498  if (!LookupSidInformation(scm,
499  pSid,
500  &ReqResult))
501  {
502  ReqResult = NULL;
503  }
504 
505  EnterCriticalSection(&scm->Lock);
506 
507  /* see if the SID was added to the cache in the meanwhile */
508  if (!FindSidInCache(scm,
509  pSid,
510  &FoundReqResult))
511  {
512  if (ReqResult != NULL)
513  {
514  /* cache the results */
515  CacheLookupResults(scm,
516  pSid,
517  ReqResult);
518  }
519  }
520  else
521  {
522  if (ReqResult != NULL)
523  {
524  /* free the information of our lookup and use the cached
525  information*/
527  ReqResult);
528  }
529 
530  ReqResult = FoundReqResult;
531  }
532 
533  /* notify the callers unless the lookup was cancelled */
534  if (scm->QueueLookingUp != NULL)
535  {
536  ULONG i = 0;
537 
538  while (scm->QueueLookingUp != NULL &&
539  i < QueueEntry->CallbackCount)
540  {
541  PVOID Context;
542  PSIDREQCOMPLETIONPROC CompletionProc;
543 
544  Context = QueueEntry->Callbacks[i].Context;
545  CompletionProc = QueueEntry->Callbacks[i].CompletionProc;
546 
547  LeaveCriticalSection(&scm->Lock);
548 
549  /* call the completion proc without holding the lock! */
550  CompletionProc(ScmToHandle(scm),
551  pSid,
552  ReqResult,
553  Context);
554 
555  EnterCriticalSection(&scm->Lock);
556 
557  i++;
558  }
559 
560  scm->QueueLookingUp = NULL;
561  }
562 
563  LeaveCriticalSection(&scm->Lock);
564 
565  /* free the queue item */
566  FreeQueueEntry(scm,
567  QueueEntry);
568  }
569  }
570 
571  CleanupSidCacheMgr(scm);
572 
573  HeapFree(scm->Heap,
574  0,
575  scm);
576 
577  if (hModule != NULL)
578  {
579  /* dereference the library and exit */
581  0);
582  }
583 
584  return 0;
585 }
LIST_ENTRY QueueListHead
Definition: sidcache.c:44
VOID(* PSIDREQCOMPLETIONPROC)(IN HANDLE SidCacheMgr, IN PSID Sid, IN PSIDREQRESULT SidRequestResult, IN PVOID Context)
Definition: precomp.h:175
#define ScmToHandle(Scm)
Definition: sidcache.c:37
const WCHAR * LPCWSTR
Definition: xmlstorage.h:185
volatile LONG RefCount
Definition: sidcache.c:41
static VOID CacheLookupResults(IN PSIDCACHEMGR scm, IN PSID pSid, IN PSIDREQRESULT ReqResult)
Definition: sidcache.c:395
CRITICAL_SECTION Lock
Definition: sidcache.c:43
void WINAPI EnterCriticalSection(LPCRITICAL_SECTION)
static VOID CleanupSidCacheMgr(IN PSIDCACHEMGR scm)
Definition: sidcache.c:112
FORCEINLINE BOOLEAN RemoveEntryList(_In_ PLIST_ENTRY Entry)
Definition: rtlfuncs.h:105
VOID WINAPI FreeLibraryAndExitThread(HMODULE hLibModule, DWORD dwExitCode)
Definition: loader.c:514
DWORD WINAPI WaitForSingleObject(IN HANDLE hHandle, IN DWORD dwMilliseconds)
Definition: synch.c:82
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
VOID DereferenceSidReqResult(IN HANDLE SidCacheMgr, IN PSIDREQRESULT ReqResult)
Definition: sidcache.c:851
static VOID FreeQueueEntry(IN PSIDCACHEMGR scm, IN PSIDQUEUEENTRY QueueEntry)
Definition: sidcache.c:81
smooth NULL
Definition: ftsmooth.c:416
struct _SIDQUEUEENTRY * QueueLookingUp
Definition: sidcache.c:45
PFLT_MESSAGE_WAITER_QUEUE CONTAINING_RECORD(Csq, DEVICE_EXTENSION, IrpQueue)) -> WaiterQ.mLock) _IRQL_raises_(DISPATCH_LEVEL) VOID NTAPI FltpAcquireMessageWaiterLock(_In_ PIO_CSQ Csq, _Out_ PKIRQL Irql)
Definition: Messaging.c:560
static HINSTANCE hDllInstance
Definition: clb.c:30
static BOOL LookupSidInformation(IN PSIDCACHEMGR scm, IN PSID pSid, OUT PSIDREQRESULT *ReqResult)
Definition: sidcache.c:207
struct _LIST_ENTRY * Flink
Definition: typedefs.h:119
struct _SID * PSID
Definition: eventlog.c:35
LPVOID lpParameter
Definition: kernel32.h:234
struct _SIDCACHEMGR * PSIDCACHEMGR
BOOL WINAPI GetModuleHandleExW(IN DWORD dwFlags, IN LPCWSTR lpwModuleName OPTIONAL, OUT HMODULE *phModule)
Definition: loader.c:873
HANDLE Heap
Definition: sidcache.c:47
PSIDCACHECALLBACKINFO Callbacks
Definition: sidcache.c:65
PSIDREQCOMPLETIONPROC CompletionProc
Definition: sidcache.c:56
static PSID pSid
Definition: security.c:74
struct tagContext Context
Definition: acpixf.h:1012
unsigned int ULONG
Definition: retypes.h:1
LIST_ENTRY ListEntry
Definition: sidcache.c:63
void WINAPI LeaveCriticalSection(LPCRITICAL_SECTION)
#define INFINITE
Definition: serial.h:102
static BOOL FindSidInCache(IN PSIDCACHEMGR scm, IN PSID pSid, OUT PSIDREQRESULT *ReqResult)
Definition: sidcache.c:329
#define HeapFree(x, y, z)
Definition: compat.h:394
HANDLE LookupEvent
Definition: sidcache.c:48
HMODULE hModule
Definition: animate.c:44

Referenced by CreateSidCacheMgr().

◆ OpenLSAPolicyHandle()

static BOOL OpenLSAPolicyHandle ( IN LPWSTR  SystemName,
IN ACCESS_MASK  DesiredAccess,
OUT PLSA_HANDLE  PolicyHandle 
)
static

Definition at line 172 of file sidcache.c.

175 {
176  LSA_OBJECT_ATTRIBUTES LsaObjectAttributes = {0};
177  LSA_UNICODE_STRING LsaSystemName, *psn;
179 
180  if (SystemName != NULL && SystemName[0] != L'\0')
181  {
182  LsaSystemName.Buffer = SystemName;
183  LsaSystemName.Length = wcslen(SystemName) * sizeof(WCHAR);
184  LsaSystemName.MaximumLength = LsaSystemName.Length + sizeof(WCHAR);
185  psn = &LsaSystemName;
186  }
187  else
188  {
189  psn = NULL;
190  }
191 
192  Status = LsaOpenPolicy(psn,
193  &LsaObjectAttributes,
195  PolicyHandle);
196  if (!NT_SUCCESS(Status))
197  {
199  return FALSE;
200  }
201 
202  return TRUE;
203 }
#define TRUE
Definition: types.h:120
LONG NTSTATUS
Definition: precomp.h:26
NTSTATUS WINAPI LsaOpenPolicy(IN PLSA_UNICODE_STRING SystemName OPTIONAL, IN PLSA_OBJECT_ATTRIBUTES ObjectAttributes, IN ACCESS_MASK DesiredAccess, OUT PLSA_HANDLE PolicyHandle)
Definition: lsa.c:1181
smooth NULL
Definition: ftsmooth.c:416
__wchar_t WCHAR
Definition: xmlstorage.h:180
ULONG WINAPI LsaNtStatusToWinError(IN NTSTATUS Status)
Definition: lsa.c:1129
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
#define SetLastError(x)
Definition: compat.h:409
static const WCHAR L[]
Definition: oid.c:1250
Status
Definition: gdiplustypes.h:24
USHORT MaximumLength
Definition: ntsecapi.h:164
_In_ PIO_STACK_LOCATION _Inout_ PFILE_OBJECT _Inout_ PVCB _Outptr_result_maybenull_ PDCB _In_ PDCB _In_ PDIRENT _In_ ULONG _In_ ULONG _In_ PUNICODE_STRING _In_ PACCESS_MASK DesiredAccess
Definition: create.c:4157
size_t __cdecl wcslen(_In_z_ const wchar_t *_Str)

Referenced by CreateSidCacheMgr().

◆ QueueSidLookup()

static BOOL QueueSidLookup ( IN PSIDCACHEMGR  scm,
IN PSID  pSid,
IN PSIDREQCOMPLETIONPROC  CompletionProc,
IN PVOID  Context 
)
static

Definition at line 683 of file sidcache.c.

687 {
688  PLIST_ENTRY CurrentEntry;
689  PSIDQUEUEENTRY QueueEntry, FoundEntry = NULL;
690  BOOL Ret = FALSE;
691 
692  /* NOTE: assumes the lists are locked! */
693 
694  if (scm->QueueLookingUp != NULL &&
695  EqualSid(pSid,
696  (PSID)(scm->QueueLookingUp + 1)))
697  {
698  FoundEntry = scm->QueueLookingUp;
699  }
700  else
701  {
702  CurrentEntry = &scm->QueueListHead;
703  while (CurrentEntry != &scm->QueueListHead)
704  {
705  QueueEntry = CONTAINING_RECORD(CurrentEntry,
707  ListEntry);
708 
709  if (EqualSid(pSid,
710  (PSID)(QueueEntry + 1)))
711  {
712  FoundEntry = QueueEntry;
713  break;
714  }
715 
716  CurrentEntry = CurrentEntry->Flink;
717  }
718  }
719 
720  if (FoundEntry == NULL)
721  {
722  DWORD SidLength = GetLengthSid(pSid);
723 
724  FoundEntry = HeapAlloc(scm->Heap,
725  0,
726  sizeof(SIDQUEUEENTRY) + SidLength);
727  if (FoundEntry != NULL)
728  {
729  CopySid(SidLength,
730  (PSID)(FoundEntry + 1),
731  pSid);
732 
733  FoundEntry->CallbackCount = 1;
734  FoundEntry->Callbacks = HeapAlloc(scm->Heap,
735  0,
736  sizeof(SIDCACHECALLBACKINFO));
737 
738  if (FoundEntry->Callbacks != NULL)
739  {
740  FoundEntry->Callbacks[0].CompletionProc = CompletionProc;
741  FoundEntry->Callbacks[0].Context = Context;
742 
743  /* append it to the queue */
744  InsertTailList(&scm->QueueListHead,
745  &FoundEntry->ListEntry);
746 
747  /* signal the lookup event */
748  SetEvent(scm->LookupEvent);
749 
750  Ret = TRUE;
751  }
752  else
753  {
754  /* unable to queue it because we couldn't allocate the callbacks
755  array, free the memory and return */
756  HeapFree(scm->Heap,
757  0,
758  FoundEntry);
759  }
760  }
761  }
762  else
763  {
764  PSIDCACHECALLBACKINFO Sidccb;
765 
766  /* add the callback */
767  Sidccb = HeapReAlloc(scm->Heap,
768  0,
769  FoundEntry->Callbacks,
770  (FoundEntry->CallbackCount + 1) * sizeof(SIDCACHECALLBACKINFO));
771  if (Sidccb != NULL)
772  {
773  FoundEntry->Callbacks = Sidccb;
774  FoundEntry->Callbacks[FoundEntry->CallbackCount].CompletionProc = CompletionProc;
775  FoundEntry->Callbacks[FoundEntry->CallbackCount++].Context = Context;
776 
777  Ret = TRUE;
778  }
779  }
780 
781  return Ret;
782 }
#define TRUE
Definition: types.h:120
BOOL WINAPI EqualSid(PSID pSid1, PSID pSid2)
Definition: security.c:708
BOOL WINAPI DECLSPEC_HOTPATCH SetEvent(IN HANDLE hEvent)
Definition: synch.c:679
#define InsertTailList(ListHead, Entry)
unsigned int BOOL
Definition: ntddk_ex.h:94
smooth NULL
Definition: ftsmooth.c:416
PFLT_MESSAGE_WAITER_QUEUE CONTAINING_RECORD(Csq, DEVICE_EXTENSION, IrpQueue)) -> WaiterQ.mLock) _IRQL_raises_(DISPATCH_LEVEL) VOID NTAPI FltpAcquireMessageWaiterLock(_In_ PIO_CSQ Csq, _Out_ PKIRQL Irql)
Definition: Messaging.c:560
struct _LIST_ENTRY * Flink
Definition: typedefs.h:119
ULONG CallbackCount
Definition: sidcache.c:64
PVOID WINAPI HeapAlloc(HANDLE, DWORD, SIZE_T)
DWORD WINAPI GetLengthSid(PSID pSid)
Definition: security.c:798
unsigned long DWORD
Definition: ntddk_ex.h:95
Definition: typedefs.h:117
PSIDCACHECALLBACKINFO Callbacks
Definition: sidcache.c:65
#define HeapReAlloc
Definition: compat.h:393
PSIDREQCOMPLETIONPROC CompletionProc
Definition: sidcache.c:56
static PSID pSid
Definition: security.c:74
struct tagContext Context
Definition: acpixf.h:1012
LIST_ENTRY ListEntry
Definition: sidcache.c:63
BOOL WINAPI CopySid(DWORD nDestinationSidLength, PSID pDestinationSid, PSID pSourceSid)
Definition: security.c:591
#define HeapFree(x, y, z)
Definition: compat.h:394

Referenced by LookupSidCache().

◆ ReferenceSidCacheMgr()

static PSIDCACHEMGR ReferenceSidCacheMgr ( IN HANDLE  SidCacheMgr)
static

Definition at line 147 of file sidcache.c.

148 {
149  PSIDCACHEMGR scm = HandleToScm(SidCacheMgr);
150 
151  if (InterlockedIncrement(&scm->RefCount) != 1)
152  {
153  return scm;
154  }
155 
156  return NULL;
157 }
volatile LONG RefCount
Definition: sidcache.c:41
smooth NULL
Definition: ftsmooth.c:416
#define InterlockedIncrement
Definition: armddk.h:53
#define HandleToScm(Handle)
Definition: sidcache.c:36

Referenced by DequeueSidLookup(), DereferenceSidReqResult(), LookupSidCache(), and ReferenceSidReqResult().

◆ ReferenceSidReqResult()

VOID ReferenceSidReqResult ( IN HANDLE  SidCacheMgr,
IN PSIDREQRESULT  ReqResult 
)

Definition at line 835 of file sidcache.c.

837 {
838  PSIDCACHEMGR scm;
839 
840  scm = ReferenceSidCacheMgr(SidCacheMgr);
841  if (scm != NULL)
842  {
843  InterlockedIncrement(&ReqResult->RefCount);
844 
846  }
847 }
static VOID DereferenceSidCacheMgr(IN PSIDCACHEMGR scm)
Definition: sidcache.c:161
smooth NULL
Definition: ftsmooth.c:416
static PSIDCACHEMGR ReferenceSidCacheMgr(IN HANDLE SidCacheMgr)
Definition: sidcache.c:147
#define InterlockedIncrement
Definition: armddk.h:53

Referenced by UpdatePrincipalListItem().