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https://github.com/reactos/reactos.git
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142 lines
3.9 KiB
C
142 lines
3.9 KiB
C
/*
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* PROJECT: Local Security Authority Server DLL
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* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
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* PURPOSE: LSA policy change notifications
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* COPYRIGHT: Eric Kohl 2018
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*/
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#include "lsasrv.h"
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typedef struct _LSA_NOTIFICATION_ENTRY
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{
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LIST_ENTRY Entry;
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POLICY_NOTIFICATION_INFORMATION_CLASS InformationClass;
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HANDLE EventHandle;
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} LSA_NOTIFICATION_ENTRY, *PLSA_NOTIFICATION_ENTRY;
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/* GLOBALS *****************************************************************/
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static LIST_ENTRY NotificationListHead;
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static RTL_RESOURCE NotificationListLock;
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/* FUNCTIONS ***************************************************************/
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VOID
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LsapInitNotificationList(VOID)
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{
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InitializeListHead(&NotificationListHead);
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RtlInitializeResource(&NotificationListLock);
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}
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static
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PLSA_NOTIFICATION_ENTRY
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LsapGetNotificationEntry(
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HANDLE EventHandle,
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POLICY_NOTIFICATION_INFORMATION_CLASS InformationClass)
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{
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PLIST_ENTRY NotificationEntry;
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PLSA_NOTIFICATION_ENTRY CurrentNotification;
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NotificationEntry = NotificationListHead.Flink;
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while (NotificationEntry != &NotificationListHead)
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{
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CurrentNotification = CONTAINING_RECORD(NotificationEntry, LSA_NOTIFICATION_ENTRY, Entry);
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if ((CurrentNotification->EventHandle == EventHandle) &&
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(CurrentNotification->InformationClass == InformationClass))
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return CurrentNotification;
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NotificationEntry = NotificationEntry->Flink;
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}
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return NULL;
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}
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NTSTATUS
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LsapRegisterNotification(
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PLSA_API_MSG pRequestMsg)
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{
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PLSA_NOTIFICATION_ENTRY pEntry;
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NTSTATUS Status = STATUS_SUCCESS;
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FIXME("LsapRegisterNotification(%p)\n", pRequestMsg);
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/* Acquire the notification list lock exclusively */
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RtlAcquireResourceExclusive(&NotificationListLock, TRUE);
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if (pRequestMsg->PolicyChangeNotify.Request.Register)
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{
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/* Register the notification event */
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pEntry = RtlAllocateHeap(RtlGetProcessHeap(),
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HEAP_ZERO_MEMORY,
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sizeof(LSA_NOTIFICATION_ENTRY));
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if (pEntry == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto done;
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}
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pEntry->InformationClass = pRequestMsg->PolicyChangeNotify.Request.InformationClass;
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pEntry->EventHandle = pRequestMsg->PolicyChangeNotify.Request.NotificationEventHandle;
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InsertHeadList(&NotificationListHead,
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&pEntry->Entry);
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}
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else
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{
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/* Unregister the notification event */
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pEntry = LsapGetNotificationEntry(pRequestMsg->PolicyChangeNotify.Request.NotificationEventHandle,
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pRequestMsg->PolicyChangeNotify.Request.InformationClass);
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if (pEntry == NULL)
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{
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Status = STATUS_INVALID_HANDLE;
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goto done;
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}
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RemoveEntryList(&pEntry->Entry);
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RtlFreeHeap(RtlGetProcessHeap(), 0, pEntry);
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}
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done:
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/* Release the notification list lock */
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RtlReleaseResource(&NotificationListLock);
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return Status;
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}
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VOID
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LsapNotifyPolicyChange(
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POLICY_NOTIFICATION_INFORMATION_CLASS InformationClass)
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{
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PLIST_ENTRY NotificationEntry;
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PLSA_NOTIFICATION_ENTRY CurrentNotification;
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FIXME("LsapNotifyPolicyChange(%lu)\n", InformationClass);
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/* Acquire the notification list lock shared */
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RtlAcquireResourceShared(&NotificationListLock, TRUE);
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NotificationEntry = NotificationListHead.Flink;
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while (NotificationEntry != &NotificationListHead)
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{
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CurrentNotification = CONTAINING_RECORD(NotificationEntry, LSA_NOTIFICATION_ENTRY, Entry);
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if (CurrentNotification->InformationClass == InformationClass)
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{
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FIXME("Notify event %p\n", CurrentNotification->EventHandle);
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}
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NotificationEntry = NotificationEntry->Flink;
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}
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/* Release the notification list lock */
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RtlReleaseResource(&NotificationListLock);
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}
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/* EOF */
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