[ion] 60069: [NPFS-NEW]: Implement NpImpersonate, needed by FSCTL_PIPE_IMPERSONATE, called by ImpersonateNamedPipeClient (in advapi). Down to only 12 kernel32:pipe failures, a 1100% improvement ove...

Author: ion
Date: Thu Sep 12 23:55:56 2013
New Revision: 60069

URL: http://svn.reactos.org/svn/reactos?rev=60069&view=rev
Log:
[NPFS-NEW]: Implement NpImpersonate, needed by FSCTL_PIPE_IMPERSONATE, called by ImpersonateNamedPipeClient (in advapi). Down to only 12 kernel32:pipe failures, a 1100% improvement over npfs.

Modified:
    trunk/reactos/drivers/filesystems/npfs_new/fsctrl.c
    trunk/reactos/drivers/filesystems/npfs_new/secursup.c

Modified: trunk/reactos/drivers/filesystems/npfs_new/fsctrl.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/npfs_ne...
==============================================================================
--- trunk/reactos/drivers/filesystems/npfs_new/fsctrl.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/npfs_new/fsctrl.c	[iso-8859-1] Thu Sep 12 23:55:56 2013
@@ -91,8 +91,29 @@
 NpImpersonate(IN PDEVICE_OBJECT DeviceObject,
               IN PIRP Irp)
 {
-    UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
+    ULONG NamedPipeEnd;
+    PNP_CCB Ccb;
+    NTSTATUS Status;
+    NODE_TYPE_CODE NodeTypeCode;
+    PIO_STACK_LOCATION IoStack;
+    PAGED_CODE();
+
+    IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+    NodeTypeCode = NpDecodeFileObject(IoStack->FileObject, NULL, &Ccb, &NamedPipeEnd);
+    if (NodeTypeCode == NPFS_NTC_CCB)
+    {
+        if (NamedPipeEnd == FILE_PIPE_SERVER_END)
+        {
+            Status = NpImpersonateClientContext(Ccb);
+        }
+        else
+        {
+            Status = STATUS_ILLEGAL_FUNCTION;
+        }
+    }
+
+    return Status;
 }

NTSTATUS

Modified: trunk/reactos/drivers/filesystems/npfs_new/secursup.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/npfs_ne...
==============================================================================
--- trunk/reactos/drivers/filesystems/npfs_new/secursup.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/npfs_new/secursup.c	[iso-8859-1] Thu Sep 12 23:55:56 2013
@@ -14,6 +14,26 @@
 #define NPFS_BUGCHECK_FILE_ID   (NPFS_BUGCHECK_SECURSUP)

/* FUNCTIONS ******************************************************************/
+
+NTSTATUS
+NTAPI
+NpImpersonateClientContext(IN PNP_CCB Ccb)
+{
+    NTSTATUS Status;
+    PSECURITY_CLIENT_CONTEXT ClientContext;
+    PAGED_CODE();
+
+    ClientContext = Ccb->ClientContext;
+    if (ClientContext)
+    {
+        Status = SeImpersonateClientEx(ClientContext, NULL);
+    }
+    else
+    {
+        Status = STATUS_CANNOT_IMPERSONATE;
+    }
+    return Status;
+}

VOID
 NTAPI