[SC]

Add the sdshow command.

svn path=/trunk/; revision=71590

reactos/base/applications/sc/CMakeLists.txt

@@ -8,6 +8,7 @@ list(APPEND SOURCE
     print.c
     query.c
     sc.c
+    sdshow.c
     start.c
     usage.c
     sc.h)

reactos/base/applications/sc/sc.c

@@ -179,6 +179,18 @@ ScControl(LPCTSTR Server,       // remote machine name
         else
             ControlUsage();
     }
+    else if (!lstrcmpi(Command, _T("sdshow")))
+    {
+        if (ArgCount > 0)
+        {
+            ServiceName = *ServiceArgs++;
+            ArgCount--;
+
+            SdShow(ServiceName);
+        }
+        else
+            SdShowUsage();
+    }
     else
     {
         MainUsage();

reactos/base/applications/sc/sc.h

@@ -6,6 +6,7 @@
 #include <windef.h>
 #include <winbase.h>
 #include <winsvc.h>
+#include <sddl.h>
 #include <tchar.h>
 
 #define SCDBG
@@ -18,6 +19,7 @@ BOOL Control(DWORD Control, LPCTSTR ServiceName, LPCTSTR *Args, INT ArgCount);
 BOOL Query(LPCTSTR *ServiceArgs, DWORD ArgCount, BOOL bExtended);
 
 LPSERVICE_STATUS_PROCESS QueryService(LPCTSTR ServiceName);
+BOOL SdShow(LPCTSTR ServiceName);
 
 /* print and error functions */
 VOID PrintService(LPCTSTR ServiceName, LPSERVICE_STATUS_PROCESS pStatus, BOOL bExtended);
@@ -35,5 +37,6 @@ VOID DescriptionUsage(VOID);
 VOID DeleteUsage(VOID);
 VOID CreateUsage(VOID);
 VOID ControlUsage(VOID);
+VOID SdShowUsage(VOID);
 
 #endif /* _SC_PCH_ */

reactos/base/applications/sc/sdshow.c

@@ -0,0 +1,101 @@
+/*
+ * PROJECT:     ReactOS Services
+ * LICENSE:     GPL - See COPYING in the top level directory
+ * FILE:        base/applications/sc/sdshow.c
+ * PURPOSE:     Show a service security descriptor
+ * COPYRIGHT:   Copyright 2016 Eric Kohl
+ *
+ */
+
+#include "sc.h"
+
+BOOL SdShow(LPCTSTR ServiceName)
+{
+    SC_HANDLE hManager = NULL;
+    SC_HANDLE hService = NULL;
+    BOOL bResult = TRUE;
+    DWORD cbBytesNeeded = 0;
+    PSECURITY_DESCRIPTOR pSecurityDescriptor = NULL;
+    LPTSTR pStringBuffer = NULL;
+
+#ifdef SCDBG
+    _tprintf(_T("service to show sd - %s\n\n"), ServiceName);
+#endif
+
+    hManager = OpenSCManager(NULL,
+                             NULL,
+                             SC_MANAGER_CONNECT);
+    if (hManager == NULL)
+    {
+        bResult = FALSE;
+        goto done;
+    }
+
+    hService = OpenService(hManager, ServiceName, READ_CONTROL);
+    if (hService == NULL)
+    {
+        bResult = FALSE;
+        goto done;
+    }
+
+    if (!QueryServiceObjectSecurity(hService,
+                                    DACL_SECURITY_INFORMATION,
+                                    (PSECURITY_DESCRIPTOR)&pSecurityDescriptor,
+                                    sizeof(PSECURITY_DESCRIPTOR),
+                                    &cbBytesNeeded))
+    {
+        if (cbBytesNeeded == 0)
+        {
+            bResult = FALSE;
+            goto done;
+        }
+    }
+
+    pSecurityDescriptor = HeapAlloc(GetProcessHeap(), 0, cbBytesNeeded);
+    if (pSecurityDescriptor == NULL)
+    {
+        SetLastError(ERROR_OUTOFMEMORY);
+        bResult = FALSE;
+        goto done;
+    }
+
+    if (!QueryServiceObjectSecurity(hService,
+                                    DACL_SECURITY_INFORMATION,
+                                    pSecurityDescriptor,
+                                    cbBytesNeeded,
+                                    &cbBytesNeeded))
+    {
+        bResult = FALSE;
+        goto done;
+    }
+
+    if (!ConvertSecurityDescriptorToStringSecurityDescriptor(pSecurityDescriptor,
+                                                             SDDL_REVISION_1,
+                                                             DACL_SECURITY_INFORMATION,
+                                                             &pStringBuffer,
+                                                             NULL))
+    {
+        bResult = FALSE;
+        goto done;
+    }
+
+    _tprintf(_T("\n%s\n"), pStringBuffer);
+
+done:
+    if (bResult == FALSE)
+        ReportLastError();
+
+    if (pStringBuffer != NULL)
+        LocalFree(pStringBuffer);
+
+    if (pSecurityDescriptor != NULL)
+        HeapFree(GetProcessHeap(), 0, pSecurityDescriptor);
+
+    if (hService)
+        CloseServiceHandle(hService);
+
+    if (hManager)
+        CloseServiceHandle(hManager);
+
+    return bResult;
+}

reactos/base/applications/sc/usage.c

@@ -41,8 +41,8 @@ VOID MainUsage(VOID)
 //    "\t  qfailure       : Queries the actions taken by a service upon failure.\n"
     _T("\t  delete         : Deletes a service (from the registry).\n")
     _T("\t  create         : Creates a service. (adds it to the registry).\n")
-    _T("\t  control        : Sends a control to a service.\n"));
-//    "\t  sdshow         : Displays a service's security descriptor.\n")
+    _T("\t  control        : Sends a control to a service.\n")
+    _T("\t  sdshow         : Displays a service's security descriptor.\n"));
 //    "\t  sdset          : Sets a service's security descriptor.\n")
 //    "\t  GetDisplayName : Gets the DisplayName for a service.\n")
 //    "\t  GetKeyName     : Gets the ServiceKeyName for a service.\n")
@@ -190,3 +190,11 @@ VOID ControlUsage(VOID)
                 _T("USAGE:\n")
                 _T("        sc <server> control [service name] <value>\n"));
 }
+
+VOID SdShowUsage(VOID)
+{
+    _tprintf(_T("DESCRIPTION:\n")
+                _T("        Displays a service's security descriptor in SDDL format.\n")
+                _T("USAGE:\n")
+                _T("        sc <server> sdshow <service name>\n"));
+}