From 2270775d8c17ce040818887cf8e3b288182660b6 Mon Sep 17 00:00:00 2001
From: james <james@e7ae566f-a301-0410-adde-c780ea21d3b5>
Date: Wed, 8 Nov 2006 04:02:56 +0000
Subject: Added #ifdefed out AUTO_USERID feature.

git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@1436 e7ae566f-a301-0410-adde-c780ea21d3b5
---
 config-win32.h.in |  3 +++
 misc.c            |  5 +++++
 tun.c             | 42 ++++++++++++++++++++++++++++++++++++++----
 tun.h             |  2 ++
 4 files changed, 48 insertions(+), 4 deletions(-)

diff --git a/config-win32.h.in b/config-win32.h.in
index 502c6ae..fcf4b69 100644
--- a/config-win32.h.in
+++ b/config-win32.h.in
@@ -65,6 +65,9 @@ typedef unsigned long in_addr_t;
 /* Allow --askpass and --auth-user-pass passwords to be read from a file */
 /* #undef ENABLE_PASSWORD_SAVE */
 
+/* Enable AUTO_USERID feature */
+/* #define AUTO_USERID */
+
 /* Enable client/server capability */
 #define ENABLE_CLIENT_SERVER 1
 
diff --git a/misc.c b/misc.c
index fb18448..ed3960c 100644
--- a/misc.c
+++ b/misc.c
@@ -1277,6 +1277,11 @@ get_user_pass (struct user_pass *up,
 		msg (M_FATAL, "Error reading username and password (must be on two consecutive lines) from %s authfile: %s",
 		     prefix,
 		     auth_file);
+
+#if defined(AUTO_USERID) && defined(WIN32)
+	      if (!strncmp (up->username, "AUTO_USERID", 11))
+		get_auto_userid (up->username, USER_PASS_LEN);
+#endif
 	    }
       
 	  fclose (fp);
diff --git a/tun.c b/tun.c
index 7fd876e..3166b32 100644
--- a/tun.c
+++ b/tun.c
@@ -62,7 +62,7 @@ static void netsh_ifconfig (const struct tuntap_options *to,
 			    const in_addr_t netmask,
 			    unsigned int flags);
 
-static const char *netsh_get_id (const char *dev_node, struct gc_arena *gc);
+static const char *netsh_get_id (const char *dev_node, const bool force_guid, struct gc_arena *gc);
 
 #endif
 
@@ -144,7 +144,7 @@ guess_tuntap_dev (const char *dev,
   const int dt = dev_type_enum (dev, dev_type);
   if (dt == DEV_TYPE_TUN || dt == DEV_TYPE_TAP)
     {
-      return netsh_get_id (dev_node, gc);
+      return netsh_get_id (dev_node, false, gc);
     }
 #endif
 
@@ -3390,7 +3390,7 @@ netsh_enable_dhcp (const struct tuntap_options *to,
  * Return a TAP name for netsh commands.
  */
 static const char *
-netsh_get_id (const char *dev_node, struct gc_arena *gc)
+netsh_get_id (const char *dev_node, const bool force_guid, struct gc_arena *gc)
 {
   const struct tap_reg *tap_reg = get_tap_reg (gc);
   const struct panel_reg *panel_reg = get_panel_reg (gc);
@@ -3413,12 +3413,46 @@ netsh_get_id (const char *dev_node, struct gc_arena *gc)
 
   if (!guid)
     return "NULL";         /* not found */
-  else if (strcmp (BPTR (&actual), "NULL"))
+  else if (!force_guid && strcmp (BPTR (&actual), "NULL"))
     return BPTR (&actual); /* control panel name */
   else
     return guid;           /* no control panel name, return GUID instead */
 }
 
+#ifdef AUTO_USERID
+
+static const char *
+debrace (const char *str, struct gc_arena *gc)
+{
+  char *s = string_alloc (str, gc);
+  int l;
+  if (*s == '{')
+    ++s;
+  l = strlen (s);
+  if (l > 0)
+    {
+      char *e = s + (l - 1);
+      if (*e == '}')
+	*e = '\0';
+    }
+  return s;
+}
+
+void
+get_auto_userid (char *username, const int capacity)
+{
+  struct gc_arena gc = gc_new ();
+  const char *nid = netsh_get_id (NULL, true, &gc);
+  if (nid && strcmp (nid, "NULL") && strlen (nid) > 3)
+    {
+      const char *nid1 = debrace (nid, &gc);
+      openvpn_snprintf (username, capacity, "W%s", nid1);
+    }
+  gc_free (&gc);
+}
+
+#endif
+
 /*
  * Called iteratively on TAP-Win32 wait-for-initialization polling loop
  */
diff --git a/tun.h b/tun.h
index 082a6fc..508e4a5 100644
--- a/tun.h
+++ b/tun.h
@@ -332,6 +332,8 @@ int tun_read_queue (struct tuntap *tt, int maxsize);
 int tun_write_queue (struct tuntap *tt, struct buffer *buf);
 int tun_finalize (HANDLE h, struct overlapped_io *io, struct buffer *buf);
 
+void get_auto_userid (char *username, const int capacity);
+
 static inline bool
 tuntap_stop (int status)
 {
-- 
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