From 95640f304295257c6d1bb18c806f9d1feb714d61 Mon Sep 17 00:00:00 2001
From: Iain Patterson <me@iain.cx>
Date: Sun, 11 Sep 2016 22:59:35 +0100
Subject: [PATCH] Tweaks for NANO server.

Try to detect if we're running in a Powershell remote session, in which
case we have neither a console nor a window station.  If that's the case
it's appropriate to print the usage message to stdout rather than
attempt to display a popup.

Use EnumServicesStatusEx() instead of EnumServicesStatus().  The latter
crashes on NANO when used in the same way that works correctly on other
versions of Windows.

Thanks Kirill Kovalenko.
---
 README.txt  |  1 +
 nssm.cpp    |  4 ++--
 service.cpp | 18 +++++++++---------
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/README.txt b/README.txt
index 34bacc0..e6d3d50 100644
--- a/README.txt
+++ b/README.txt
@@ -1042,6 +1042,7 @@ Thanks to Marcin Lewandowski for spotting a bug appending to large files.
 Thanks to Nicolas Ducrocq for suggesting timestamping redirected output.
 Thanks to Meang Akira Tanaka for suggestion and initial implementation of
 the statuscode command.
+Thanks to Kirill Kovalenko for reporting a crash with NANO server.
 
 Licence
 -------
diff --git a/nssm.cpp b/nssm.cpp
index 1f9e0ed..6147b90 100644
--- a/nssm.cpp
+++ b/nssm.cpp
@@ -158,8 +158,8 @@ void strip_basename(TCHAR *buffer) {
 
 /* How to use me correctly */
 int usage(int ret) {
-  if (GetConsoleWindow()) print_message(stderr, NSSM_MESSAGE_USAGE, NSSM_VERSION, NSSM_CONFIGURATION, NSSM_DATE);
-  else popup_message(0, MB_OK, NSSM_MESSAGE_USAGE, NSSM_VERSION, NSSM_CONFIGURATION, NSSM_DATE);
+  if ((! GetConsoleWindow() || ! GetStdHandle(STD_OUTPUT_HANDLE)) && GetProcessWindowStation()) popup_message(0, MB_OK, NSSM_MESSAGE_USAGE, NSSM_VERSION, NSSM_CONFIGURATION, NSSM_DATE);
+  else print_message(stderr, NSSM_MESSAGE_USAGE, NSSM_VERSION, NSSM_CONFIGURATION, NSSM_DATE);
   return(ret);
 }
 
diff --git a/service.cpp b/service.cpp
index dbac12b..a18684e 100644
--- a/service.cpp
+++ b/service.cpp
@@ -359,29 +359,29 @@ SC_HANDLE open_service(SC_HANDLE services, TCHAR *service_name, unsigned long ac
 
   unsigned long bufsize, required, count, i;
   unsigned long resume = 0;
-  EnumServicesStatus(services, SERVICE_DRIVER | SERVICE_FILE_SYSTEM_DRIVER | SERVICE_KERNEL_DRIVER | SERVICE_WIN32, SERVICE_STATE_ALL, 0, 0, &required, &count, &resume);
+  EnumServicesStatusEx(services, SC_ENUM_PROCESS_INFO, SERVICE_DRIVER | SERVICE_FILE_SYSTEM_DRIVER | SERVICE_KERNEL_DRIVER | SERVICE_WIN32, SERVICE_STATE_ALL, 0, 0, &required, &count, &resume, 0);
   error = GetLastError();
   if (error != ERROR_MORE_DATA) {
     print_message(stderr, NSSM_MESSAGE_ENUMSERVICESSTATUS_FAILED, error_string(GetLastError()));
     return 0;
   }
 
-  ENUM_SERVICE_STATUS *status = (ENUM_SERVICE_STATUS *) HeapAlloc(GetProcessHeap(), 0, required);
+  ENUM_SERVICE_STATUS_PROCESS *status = (ENUM_SERVICE_STATUS_PROCESS *) HeapAlloc(GetProcessHeap(), 0, required);
   if (! status) {
-    print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("ENUM_SERVICE_STATUS"), _T("open_service()"));
+    print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("ENUM_SERVICE_STATUS_PROCESS"), _T("open_service()"));
     return 0;
   }
 
   bufsize = required;
   while (true) {
     /*
-      EnumServicesStatus() returns:
+      EnumServicesStatusEx() returns:
       1 when it retrieved data and there's no more data to come.
       0 and sets last error to ERROR_MORE_DATA when it retrieved data and
         there's more data to come.
       0 and sets last error to something else on error.
     */
-    int ret = EnumServicesStatus(services, SERVICE_DRIVER | SERVICE_FILE_SYSTEM_DRIVER | SERVICE_KERNEL_DRIVER | SERVICE_WIN32, SERVICE_STATE_ALL, status, bufsize, &required, &count, &resume);
+    int ret = EnumServicesStatusEx(services, SC_ENUM_PROCESS_INFO, SERVICE_DRIVER | SERVICE_FILE_SYSTEM_DRIVER | SERVICE_KERNEL_DRIVER | SERVICE_WIN32, SERVICE_STATE_ALL, (LPBYTE) status, bufsize, &required, &count, &resume, 0);
     if (! ret) {
       error = GetLastError();
       if (error != ERROR_MORE_DATA) {
@@ -2275,22 +2275,22 @@ int list_nssm_services(int argc, TCHAR **argv) {
 
   unsigned long bufsize, required, count, i;
   unsigned long resume = 0;
-  EnumServicesStatus(services, SERVICE_WIN32, SERVICE_STATE_ALL, 0, 0, &required, &count, &resume);
+  EnumServicesStatusEx(services, SC_ENUM_PROCESS_INFO, SERVICE_WIN32, SERVICE_STATE_ALL, 0, 0, &required, &count, &resume, 0);
   unsigned long error = GetLastError();
   if (error != ERROR_MORE_DATA) {
     print_message(stderr, NSSM_MESSAGE_ENUMSERVICESSTATUS_FAILED, error_string(GetLastError()));
     return 2;
   }
 
-  ENUM_SERVICE_STATUS *status = (ENUM_SERVICE_STATUS *) HeapAlloc(GetProcessHeap(), 0, required);
+  ENUM_SERVICE_STATUS_PROCESS *status = (ENUM_SERVICE_STATUS_PROCESS *) HeapAlloc(GetProcessHeap(), 0, required);
   if (! status) {
-    print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("ENUM_SERVICE_STATUS"), _T("list_nssm_services()"));
+    print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("ENUM_SERVICE_STATUS_PROCESS"), _T("list_nssm_services()"));
     return 3;
   }
 
   bufsize = required;
   while (true) {
-    int ret = EnumServicesStatus(services, SERVICE_WIN32, SERVICE_STATE_ALL, status, bufsize, &required, &count, &resume);
+    int ret = EnumServicesStatusEx(services, SC_ENUM_PROCESS_INFO, SERVICE_WIN32, SERVICE_STATE_ALL, (LPBYTE) status, bufsize, &required, &count, &resume, 0);
     if (! ret) {
       error = GetLastError();
       if (error != ERROR_MORE_DATA) {
-- 
2.20.1