From 0c834b28bf391056ebbd2e84e64062b902f936ed Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@anytun.org>
Date: Sat, 31 Jan 2009 02:17:44 +0000
Subject: ported new -n functionality to windows (now using new tun ioctl)

---
 src/anytun.suo          | Bin 57856 -> 57856 bytes
 src/anytun.vcproj       |   8 ++++++++
 src/deviceConfig.hpp    |   4 ++--
 src/win32/common.h      |  14 ++++++++++----
 src/win32/tunDevice.cpp |  27 ++++++++++++---------------
 5 files changed, 32 insertions(+), 21 deletions(-)

diff --git a/src/anytun.suo b/src/anytun.suo
index 71a022b..41e43e0 100644
Binary files a/src/anytun.suo and b/src/anytun.suo differ
diff --git a/src/anytun.vcproj b/src/anytun.vcproj
index b576bd5..2f118c7 100644
--- a/src/anytun.vcproj
+++ b/src/anytun.vcproj
@@ -397,6 +397,14 @@
 			<File
 				RelativePath=".\options.cpp"
 				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						PreprocessorDefinitions="ANYTUN_OPTIONS"
+					/>
+				</FileConfiguration>
 			</File>
 			<File
 				RelativePath=".\packetSource.cpp"
diff --git a/src/deviceConfig.hpp b/src/deviceConfig.hpp
index 3e6c912..3c3fd41 100644
--- a/src/deviceConfig.hpp
+++ b/src/deviceConfig.hpp
@@ -68,8 +68,8 @@ public:
     else if(dev_type == "tap")
       type_ = TYPE_TAP;
 
-    if(type_ == TYPE_TUN && (ifcfg_lp == "" || ifcfg_rnmp == ""))
-      throw std::runtime_error("Device type tun requires ifconfig parameters (--ifconfig)");
+    if(type_ == TYPE_TUN && ifcfg_addr == "")
+      throw std::runtime_error("Device type tun requires ifconfig parameter (--ifconfig)");
 #endif
 
     if(ifcfg_addr != "")
diff --git a/src/win32/common.h b/src/win32/common.h
index 39a8349..3c183c2 100644
--- a/src/win32/common.h
+++ b/src/win32/common.h
@@ -8,13 +8,12 @@
  *  Copyright (C) Damion K. Wilson, 2003, and is released under the
  *  GPL version 2 (see below).
  *
- *  All other source code is Copyright (C) James Yonan, 2003-2004,
+ *  All other source code is Copyright (C) 2002-2005 OpenVPN Solutions LLC,
  *  and is released under the GPL version 2 (see below).
  *
  *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -40,6 +39,8 @@
 #define TAP_CONTROL_CODE(request,method) \
   CTL_CODE (FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS)
 
+// Present in 8.1
+
 #define TAP_IOCTL_GET_MAC               TAP_CONTROL_CODE (1, METHOD_BUFFERED)
 #define TAP_IOCTL_GET_VERSION           TAP_CONTROL_CODE (2, METHOD_BUFFERED)
 #define TAP_IOCTL_GET_MTU               TAP_CONTROL_CODE (3, METHOD_BUFFERED)
@@ -50,6 +51,11 @@
 #define TAP_IOCTL_GET_LOG_LINE          TAP_CONTROL_CODE (8, METHOD_BUFFERED)
 #define TAP_IOCTL_CONFIG_DHCP_SET_OPT   TAP_CONTROL_CODE (9, METHOD_BUFFERED)
 
+// Added in 8.2
+
+/* obsoletes TAP_IOCTL_CONFIG_POINT_TO_POINT */
+#define TAP_IOCTL_CONFIG_TUN            TAP_CONTROL_CODE (10, METHOD_BUFFERED)
+
 //=================
 // Registry keys
 //=================
diff --git a/src/win32/tunDevice.cpp b/src/win32/tunDevice.cpp
index 94fc657..850711d 100644
--- a/src/win32/tunDevice.cpp
+++ b/src/win32/tunDevice.cpp
@@ -43,9 +43,9 @@
 #include "common.h"
 
 #define MIN_TAP_VER_MAJOR 8
-#define MIN_TAP_VER_MINOR 1
+#define MIN_TAP_VER_MINOR 2
 
-TunDevice::TunDevice(std::string dev_name, std::string dev_type, std::string ifcfg_lp, std::string ifcfg_rnmp) : conf_(dev_name, dev_type, ifcfg_lp, ifcfg_rnmp, 1400)
+TunDevice::TunDevice(std::string dev_name, std::string dev_type, std::string ifcfg_addr, u_int16_t ifcfg_prefix) : conf_(dev_name, dev_type, ifcfg_addr, ifcfg_prefix, 1400)
 {
   if(conf_.type_ != TYPE_TUN && conf_.type_ != TYPE_TAP)
     throw std::runtime_error("unable to recognize type of device (tun or tap)");
@@ -84,19 +84,20 @@ TunDevice::TunDevice(std::string dev_name, std::string dev_type, std::string ifc
   }
 
   if(conf_.type_ == TYPE_TUN) {
-    u_long ep[2];
-    ep[0] = htonl(conf_.local_.getNetworkAddressV4().to_ulong());
-    ep[1] = htonl(conf_.remote_netmask_.getNetworkAddressV4().to_ulong());
-    err = performIoControl(TAP_IOCTL_CONFIG_POINT_TO_POINT, ep, sizeof(ep), ep, sizeof(ep));
+    u_long ep[3];
+    ep[0] = htonl(conf_.addr_.getNetworkAddressV4().to_ulong());
+    ep[1] = htonl(conf_.addr_.getNetworkAddressV4().to_ulong() & conf_.netmask_.getNetworkAddressV4().to_ulong());
+    ep[2] = htonl(conf_.netmask_.getNetworkAddressV4().to_ulong());
+    err = performIoControl(TAP_IOCTL_CONFIG_TUN, ep, sizeof(ep), ep, sizeof(ep));
     if(err != ERROR_SUCCESS) {
       CloseHandle(handle_);
       std::stringstream msg;
-      msg << "Unable to set device point-to-point mode: " << LogErrno(err);
+      msg << "Unable to set device tun mode: " << LogErrno(err);
 	    throw std::runtime_error(msg.str());
     }
   }
 
-  if(ifcfg_lp != "" && ifcfg_rnmp != "")
+  if(ifcfg_addr != "")
     do_ifconfig();
 
   int status = true;
@@ -267,14 +268,10 @@ void TunDevice::init_post()
 
 void TunDevice::do_ifconfig()
 {
-  u_long remote_netmask = conf_.remote_netmask_.getNetworkAddressV4().to_ulong();
-  u_long adapter_mask = (conf_.type_ == TYPE_TUN) ? ~3 : remote_netmask;
-  u_long local = conf_.local_.getNetworkAddressV4().to_ulong();
-  
   u_long ep[4];
-  ep[0] = htonl(local);
-  ep[1] = htonl(adapter_mask);
-  ep[2] = (conf_.type_ == TYPE_TUN) ? htonl(remote_netmask) : htonl(local & adapter_mask);
+  ep[0] = htonl(conf_.addr_.getNetworkAddressV4().to_ulong());
+  ep[1] = htonl(conf_.netmask_.getNetworkAddressV4().to_ulong());
+  ep[2] = htonl(conf_.addr_.getNetworkAddressV4().to_ulong() & conf_.netmask_.getNetworkAddressV4().to_ulong());
   ep[3] = 365 * 24 * 3600;  // lease time in seconds
   DWORD err = performIoControl(TAP_IOCTL_CONFIG_DHCP_MASQ, ep, sizeof(ep), ep, sizeof(ep));
   if(err != ERROR_SUCCESS) {
-- 
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