From 5ce1298452181eb6b569766a91fba30f1aff89e8 Mon Sep 17 00:00:00 2001
From: Selva Nair <selva.nair@gmail.com>
Date: Tue, 16 Feb 2016 15:49:13 -0500
Subject: [PATCH] Warn if interative service is not installed or not running

Signed-off-by: Selva Nair <selva.nair@gmail.com>
---
 main.c                    |  3 +++
 openvpn-gui-res.h         |  2 ++
 res/openvpn-gui-res-en.rc |  4 ++++
 service.c                 | 34 ++++++++++++++++++++++++++++++++++
 4 files changed, 43 insertions(+)

diff --git a/main.c b/main.c
index 20e81ab..b6b97be 100644
--- a/main.c
+++ b/main.c
@@ -178,6 +178,9 @@ int WINAPI _tWinMain (HINSTANCE hThisInstance,
     exit(1);
   }
 
+  if (!IsUserAdmin())
+    CheckIServiceStatus();
+
   BuildFileList();
   if (!VerifyAutoConnections()) {
     exit(1);
diff --git a/openvpn-gui-res.h b/openvpn-gui-res.h
index 2bf9d23..8a949ef 100644
--- a/openvpn-gui-res.h
+++ b/openvpn-gui-res.h
@@ -229,6 +229,8 @@
 #define IDS_NFO_RESTARTED               1708
 #define IDS_ERR_ACCESS_SERVICE_PIPE     1709
 #define IDS_ERR_WRITE_SERVICE_PIPE      1710
+#define IDS_ERR_NOTSTARTED_ISERVICE     1711
+#define IDS_ERR_INSTALL_ISERVICE        1712
 
 /* Registry Related */
 #define IDS_ERR_GET_WINDOWS_DIR         1801
diff --git a/res/openvpn-gui-res-en.rc b/res/openvpn-gui-res-en.rc
index 1b6ebb0..c994810 100644
--- a/res/openvpn-gui-res-en.rc
+++ b/res/openvpn-gui-res-en.rc
@@ -327,6 +327,10 @@ BEGIN
     IDS_NFO_RESTARTED "OpenVPN Service Restarted."
     IDS_ERR_ACCESS_SERVICE_PIPE "Access to service pipe failed."
     IDS_ERR_WRITE_SERVICE_PIPE "Writing to service pipe failed."
+    IDS_ERR_INSTALL_ISERVICE     """OpenVPNServiceInteractive"" is not installed.\n"
+                                 "Tasks requiring administrative access may not work."
+    IDS_ERR_NOTSTARTED_ISERVICE  """OpenVPNServiceInteractive"" is not started.\n"
+                                 "Tasks requiring administrative access may not work."
 
     /* registry */
     IDS_ERR_GET_WINDOWS_DIR "Error getting Windows Directory."
diff --git a/service.c b/service.c
index 21cab44..fc7367f 100644
--- a/service.c
+++ b/service.c
@@ -241,6 +241,40 @@ int MyReStartService()
     return(false);
 }
 
+bool
+CheckIServiceStatus()
+{
+    SC_HANDLE schSCManager;
+    SC_HANDLE schService;
+    SERVICE_STATUS ssStatus;
+
+    // Open a handle to the SC Manager database.
+    schSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT);
+
+    if (NULL == schSCManager)
+        return(false);
+
+    schService = OpenService(schSCManager, _T("OpenVPNServiceInteractive"),
+                             SERVICE_QUERY_STATUS);
+    if (schService == NULL &&
+        GetLastError() == ERROR_SERVICE_DOES_NOT_EXIST)
+    {
+        /* warn that iservice is not installed */
+        ShowLocalizedMsg(IDS_ERR_INSTALL_ISERVICE);
+        return(false);
+    }
+
+    if (!QueryServiceStatus(schService, &ssStatus))
+        return(false);
+
+    if (ssStatus.dwCurrentState != SERVICE_RUNNING)
+    {
+        /* warn that iservice is not started */
+        ShowLocalizedMsg(IDS_ERR_NOTSTARTED_ISERVICE);
+        return(false);
+    }
+    return true;
+}
 
 int CheckServiceStatus()
 {