From 4cb29716d1ed5d293188709fa70119955022777e Mon Sep 17 00:00:00 2001
From: Eric Kohl <eric.kohl@reactos.org>
Date: Sun, 24 Oct 2010 13:48:11 +0000
Subject: [PATCH] [SERVICES] RControlService: Check the current state before
 sending a control request.

svn path=/trunk/; revision=49259
---
 reactos/base/system/services/rpcserver.c | 29 +++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/reactos/base/system/services/rpcserver.c b/reactos/base/system/services/rpcserver.c
index 07f7aacd73d..30df18d071f 100644
--- a/reactos/base/system/services/rpcserver.c
+++ b/reactos/base/system/services/rpcserver.c
@@ -553,6 +553,7 @@ DWORD RControlService(
     DWORD pcbBytesNeeded = 0;
     DWORD dwServicesReturned = 0;
     DWORD dwControlsAccepted;
+    DWORD dwCurrentState;
     HKEY hServicesKey = NULL;
 
     DPRINT("RControlService() called\n");
@@ -655,8 +656,34 @@ DWORD RControlService(
     else
     {
         dwControlsAccepted = lpService->Status.dwControlsAccepted;
+        dwCurrentState = lpService->Status.dwCurrentState;
 
-        /* Check if the control code is acceptable */
+        /* Check the current state before sending a control request */
+        switch (dwCurrentState)
+        {
+            case SERVICE_STOP_PENDING:
+            case SERVICE_STOPPED:
+                return ERROR_SERVICE_CANNOT_ACCEPT_CTRL;
+
+            case SERVICE_START_PENDING:
+                switch (dwControl)
+                {
+                    case SERVICE_CONTROL_STOP:
+                        break;
+
+                    case SERVICE_CONTROL_INTERROGATE:
+                        RtlCopyMemory(lpServiceStatus,
+                                      &lpService->Status,
+                                      sizeof(SERVICE_STATUS));
+                        return ERROR_SUCCESS;
+
+                    default:
+                        return ERROR_SERVICE_CANNOT_ACCEPT_CTRL;
+                }
+                break;
+        }
+
+        /* Check if the control code is acceptable to the service */
         switch (dwControl)
         {
             case SERVICE_CONTROL_STOP:
-- 
2.17.1