[fireball] 42047: - Implement CSR interaction function - ReactOS specific!

Author: fireball
Date: Sat Jul 18 15:31:51 2009
New Revision: 42047

URL: http://svn.reactos.org/svn/reactos?rev=42047&view=rev
Log:
- Implement CSR interaction function - ReactOS specific!

Added:
    branches/arwinss/reactos/subsystems/win32/win32k/main/csr.c   (with props)

Added: branches/arwinss/reactos/subsystems/win32/win32k/main/csr.c
URL: http://svn.reactos.org/svn/reactos/branches/arwinss/reactos/subsystems/win32...
==============================================================================
--- branches/arwinss/reactos/subsystems/win32/win32k/main/csr.c (added)
+++ branches/arwinss/reactos/subsystems/win32/win32k/main/csr.c [iso-8859-1] Sat Jul 18 15:31:51 2009
@@ -1,0 +1,209 @@
+/*
+ * COPYRIGHT:        See COPYING in the top level directory
+ * PROJECT:          ReactOS kernel
+ * PURPOSE:          Interface to csrss. ROS SPECIFIC!
+ * FILE:             subsys/win32k/ntuser/csr.c
+ * PROGRAMER:        Parts are by Ge van Geldorp ([e-mail])
+ */
+
+#include <win32k.h>
+#include <handle.h>
+
+//#define NDEBUG
+#include <debug.h>
+
+static HANDLE WindowsApiPort = NULL;
+PEPROCESS CsrProcess = NULL;
+
+VOID NTAPI
+RosUserConnectCsrss(void)
+{
+   NTSTATUS Status;
+   UNICODE_STRING PortName;
+   ULONG ConnectInfoLength;
+   SECURITY_QUALITY_OF_SERVICE Qos;
+
+   RtlInitUnicodeString(&PortName, L"\Windows\ApiPort");
+   ConnectInfoLength = 0;
+   Qos.Length = sizeof(Qos);
+   Qos.ImpersonationLevel = SecurityDelegation;
+   Qos.ContextTrackingMode = SECURITY_STATIC_TRACKING;
+   Qos.EffectiveOnly = FALSE;
+
+   Status = ZwConnectPort(&WindowsApiPort,
+                          &PortName,
+                          &Qos,
+                          NULL,
+                          NULL,
+                          NULL,
+                          NULL,
+                          &ConnectInfoLength);
+   if (! NT_SUCCESS(Status))
+   {
+      DPRINT1("There is a problem connecting to CSRSS, Status=0x%08x\n", Status);
+      SetLastNtError(Status);
+   }
+
+   CsrProcess = PsGetCurrentProcess();
+   DPRINT("Win32k registered with CSRSS\n");
+}
+
+
+NTSTATUS FASTCALL
+co_CsrNotify(PCSR_API_MESSAGE Request)
+{
+   NTSTATUS Status;
+   PEPROCESS OldProcess;
+
+   if (NULL == CsrProcess)
+   {
+      return STATUS_INVALID_PORT_HANDLE;
+   }
+
+   Request->Header.u2.ZeroInit = 0;
+   Request->Header.u1.s1.DataLength = sizeof(CSR_API_MESSAGE) - sizeof(PORT_MESSAGE);
+   Request->Header.u1.s1.TotalLength = sizeof(CSR_API_MESSAGE);
+
+   /* Switch to the process in which the WindowsApiPort handle is valid */
+   OldProcess = PsGetCurrentProcess();
+   if (CsrProcess != OldProcess)
+   {
+      KeAttachProcess(&CsrProcess->Pcb);
+   }
+
+   UserLeave();
+
+   Status = ZwRequestWaitReplyPort(WindowsApiPort,
+                                   &Request->Header,
+                                   &Request->Header);
+
+   UserEnterExclusive();
+
+   if (CsrProcess != OldProcess)
+   {
+      KeDetachProcess();
+   }
+
+   if (NT_SUCCESS(Status))
+   {
+      Status = Request->Status;
+   }
+
+   return Status;
+}
+
+
+NTSTATUS
+APIENTRY
+CsrInsertObject(HANDLE ObjectHandle,
+                ACCESS_MASK DesiredAccess,
+                PHANDLE Handle)
+{
+#ifdef WIN32K_USES_PROPER_OB
+   NTSTATUS Status;
+   HANDLE CsrProcessHandle;
+   OBJECT_ATTRIBUTES ObjectAttributes;
+   CLIENT_ID Cid;
+
+   /* Put CSR'S CID */
+   Cid.UniqueProcess = CsrProcess->UniqueProcessId;
+   Cid.UniqueThread = 0;
+
+   /* Empty Attributes */
+   InitializeObjectAttributes(&ObjectAttributes,
+                              NULL,
+                              0,
+                              NULL,
+                              NULL);
+
+   /* Get a Handle to Csrss */
+   Status = ZwOpenProcess(&CsrProcessHandle,
+                          PROCESS_DUP_HANDLE,
+                          &ObjectAttributes,
+                          &Cid);
+
+   if ((NT_SUCCESS(Status)))
+   {
+      /* Duplicate the Handle */
+      Status = ZwDuplicateObject(NtCurrentProcess(),
+                                 ObjectHandle,
+                                 CsrProcessHandle,
+                                 Handle,
+                                 DesiredAccess,
+                                 OBJ_INHERIT,
+                                 0);
+
+      /* Close our handle to CSRSS */
+      ZwClose(CsrProcessHandle);
+   }
+
+   return Status;
+#else
+    /* No csrss - no luck */
+    if (!CsrProcess) return STATUS_UNSUCCESSFUL;
+
+    /* Duplicate the handle */
+    *Handle = (HANDLE)duplicate_handle(PsGetCurrentProcessWin32Process(),
+        (obj_handle_t)ObjectHandle, PsGetProcessWin32Process(CsrProcess), 0, 0, DUP_HANDLE_SAME_ACCESS);
+
+    return STATUS_SUCCESS;
+#endif
+}
+
+NTSTATUS FASTCALL
+CsrCloseHandle(HANDLE Handle)
+{
+   NTSTATUS Status;
+   PEPROCESS OldProcess;
+
+   /* Switch to the process in which the handle is valid */
+   OldProcess = PsGetCurrentProcess();
+   if (CsrProcess != OldProcess)
+   {
+      KeAttachProcess(&CsrProcess->Pcb);
+   }
+
+   Status = ZwClose(Handle);
+
+   if (CsrProcess != OldProcess)
+   {
+      KeDetachProcess();
+   }
+
+   return Status;
+}
+
+/* Below is a part written by me */
+NTSTATUS
+NTAPI
+CsrNotifyCreateDesktop(HDESK Desktop)
+{
+    CSR_API_MESSAGE Request;
+    NTSTATUS Status;
+
+    /* Create a handle for CSRSS and notify CSRSS */
+    Request.Type = MAKE_CSR_API(CREATE_DESKTOP, CSR_GUI);
+
+    /* Create a duplicate handle in csrss's process space */
+    Status = CsrInsertObject(Desktop,
+                             GENERIC_ALL,
+                             (HANDLE*)&Request.Data.CreateDesktopRequest.DesktopHandle);
+    if (!NT_SUCCESS(Status))
+    {
+        DPRINT1("Failed to create desktop handle for CSRSS\n");
+        return Status;
+    }
+
+    /* Notify CSRSS */
+    Status = co_CsrNotify(&Request);
+    if (!NT_SUCCESS(Status))
+    {
+        //CsrCloseHandle(Request.Data.CreateDesktopRequest.DesktopHandle);
+        DPRINT1("Failed to notify CSRSS about new desktop, Status 0x%08x\n", Status);
+        return Status;
+    }
+
+    return STATUS_SUCCESS;
+}
+
+/* EOF */

Propchange: branches/arwinss/reactos/subsystems/win32/win32k/main/csr.c
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