Support user and global config directories

- Set default config directory (config_dir) to %UserProfile%\OpenVPN\config
  (saved and read back from HKCU\Software\OpenVPN-GUI\config_dir)

- Add a global_config_dir variable read from HKLM\Software\OpenVPN\config_dir
  or set to OpenVPN-install-path\config

- Scan both directories and their sub directories for connection profiles.
  In case of name conflicts config_dir gets priority over global_config_dir

- Eliminate multiple warnings of duplicate configs

Fixed on review (Thanks to leobasilio@gmail.com)

- Fix wrongly used o.config_dir in 2 locations
- Unrelated: Added missing  CheckIServiceStatus to service.h

Signed-off-by: Selva Nair <selva.nair@gmail.com>

main.c

@@ -170,6 +170,8 @@ int WINAPI _tWinMain (HINSTANCE hThisInstance,
   if (!GetRegistryKeys()) {
     exit(1);
   }
+  EnsureDirExists(o.config_dir);
+
   if (!CheckVersion()) {
     exit(1);
   }

openvpn_config.c

@@ -92,7 +92,7 @@ ConfigAlreadyExists(TCHAR *newconfig)
 
 
 static void
-AddConfigFileToList(int config, TCHAR *filename, TCHAR *config_dir)
+AddConfigFileToList(int config, const TCHAR *filename, const TCHAR *config_dir)
 {
     connection_t *c = &o.conn[config];
     int i;
@@ -120,22 +120,18 @@ AddConfigFileToList(int config, TCHAR *filename, TCHAR *config_dir)
 }
 
 
-void
-BuildFileList()
+static void
+BuildFileList0(const TCHAR *config_dir, bool warn_duplicates)
 {
     WIN32_FIND_DATA find_obj;
     HANDLE find_handle;
     TCHAR find_string[MAX_PATH];
     TCHAR subdir_table[MAX_CONFIG_SUBDIRS][MAX_PATH];
     TCHAR fullpath[MAX_PATH];
-    static int warn_no_configs = 1;
     int subdirs = 0;
     int i;
 
-    /* Reset config counter */
-    o.num_configs = 0;
-
-    _sntprintf_0(find_string, _T("%s\\*"), o.config_dir);
+    _sntprintf_0(find_string, _T("%s\\*"), config_dir);
     find_handle = FindFirstFile(find_string, &find_obj);
     if (find_handle == INVALID_HANDLE_VALUE)
         return;
@@ -152,9 +148,17 @@ BuildFileList()
         match_t match_type = match(&find_obj, o.ext_string);
         if (match_type == match_file)
         {
-            _sntprintf_0(fullpath, _T("%s\\%s"), o.config_dir, find_obj.cFileName);
+            _sntprintf_0(fullpath, _T("%s\\%s"), config_dir, find_obj.cFileName);
+
+            if (ConfigAlreadyExists(find_obj.cFileName))
+            {
+                if (warn_duplicates)
+                    ShowLocalizedMsg(IDS_ERR_CONFIG_EXIST, find_obj.cFileName);
+                continue;
+            }
+
             if (CheckReadAccess (fullpath))
-                AddConfigFileToList(o.num_configs++, find_obj.cFileName, o.config_dir);
+                AddConfigFileToList(o.num_configs++, find_obj.cFileName, config_dir);
         }
         else if (match_type == match_dir)
         {
@@ -163,7 +167,7 @@ BuildFileList()
             &&  subdirs < MAX_CONFIG_SUBDIRS)
             {
                 /* Add dir to dir_table */
-                _sntprintf_0(subdir_table[subdirs], _T("%s\\%s"), o.config_dir, find_obj.cFileName);
+                _sntprintf_0(subdir_table[subdirs], _T("%s\\%s"), config_dir, find_obj.cFileName);
                 subdirs++;
             }
         }
@@ -195,7 +199,8 @@ BuildFileList()
 
             if (ConfigAlreadyExists(find_obj.cFileName))
             {
-                ShowLocalizedMsg(IDS_ERR_CONFIG_EXIST, find_obj.cFileName);
+                if (warn_duplicates)
+                    ShowLocalizedMsg(IDS_ERR_CONFIG_EXIST, find_obj.cFileName);
                 continue;
             }
 
@@ -204,9 +209,22 @@ BuildFileList()
 
         FindClose(find_handle);
     }
-    if (o.num_configs == 0 && warn_no_configs)
-    {
-        ShowLocalizedMsg(IDS_NFO_NO_CONFIGS, o.config_dir);
-        warn_no_configs = 0;
-    }
+}
+
+void
+BuildFileList()
+{
+    static bool issue_warnings = true;
+
+    o.num_configs = 0;
+
+    BuildFileList0 (o.config_dir, issue_warnings);
+
+    if (_tcscmp (o.global_config_dir, o.config_dir))
+        BuildFileList0 (o.global_config_dir, issue_warnings);
+
+    if (o.num_configs == 0 && issue_warnings)
+        ShowLocalizedMsg(IDS_NFO_NO_CONFIGS);
+
+    issue_warnings = false;
 }

options.h

@@ -125,6 +125,7 @@ typedef struct {
     /* Registry values */
     TCHAR exe_path[MAX_PATH];
     TCHAR config_dir[MAX_PATH];
+    TCHAR global_config_dir[MAX_PATH];
     TCHAR ext_string[16];
     TCHAR log_dir[MAX_PATH];
     TCHAR priority_string[64];

registry.c

@@ -73,8 +73,15 @@ GetRegistryKeys()
   if (openvpn_path[_tcslen(openvpn_path) - 1] != _T('\\'))
     _tcscat(openvpn_path, _T("\\"));
 
+  /* an admin-defined global config dir defined in HKLM\OpenVPN\config_dir */
+  if (!GetRegistryValue(regkey, _T("config_dir"), o.global_config_dir, _countof(o.global_config_dir)))
+    {
+      /* use default = openvpnpath\config */
+      _sntprintf_0(o.global_config_dir, _T("%sconfig"), openvpn_path);
+    }
 
-  _sntprintf_0(temp_path, _T("%sconfig"), openvpn_path);
+  /* config_dir in user's profile by default */
+  _sntprintf_0(temp_path, _T("%s\\OpenVPN\\config"), profile_dir);
   if (!GetRegKey(_T("config_dir"), o.config_dir, 
       temp_path, _countof(o.config_dir))) return(false);
 

res/openvpn-gui-res-en.rc

@@ -201,7 +201,7 @@ BEGIN
 
     /* OpenVPN */
     IDS_ERR_MANY_CONFIGS "OpenVPN GUI does not support more than %d configs. Please contact the author if you have the need for more."
-    IDS_NFO_NO_CONFIGS "No readable connection profiles (config files) found at %s"
+    IDS_NFO_NO_CONFIGS "No readable connection profiles (config files) found"
     IDS_ERR_ONE_CONN_OLD_VER "You can only have one connection running at the same time when using an older version on OpenVPN than 2.0-beta6."
     IDS_ERR_STOP_SERV_OLD_VER "You cannot use OpenVPN GUI to start a connection while the OpenVPN Service is running (with OpenVPN 1.5/1.6). Stop OpenVPN Service first if you want to use OpenVPN GUI."
     IDS_ERR_CREATE_EVENT "CreateEvent failed on exit event: %s"

service.h

@@ -23,3 +23,4 @@ int MyStartService();
 int MyStopService();
 int MyReStartService();
 int CheckServiceStatus();
+BOOL CheckIServiceStatus();