add ebuild for vtun with fix for build-time racing condition

net-misc/vtun/files/vtun-3.0.2-build-racing-condition-fix.patch

@@ -0,0 +1,17 @@
+--- Makefile.in.orig	2012-06-12 00:20:24.359206241 +0400
++++ Makefile.in	2012-06-12 00:22:46.735301510 +0400
+@@ -60,10 +60,12 @@
+ vtund: $(OBJS)
+ 	$(CC) $(CFLAGS) -o vtund $(OBJS) $(LFD_OBJS) $(LDFLAGS)
+ 
+-cfg_file.tab.c: cfg_file.y cfg_kwords.h config.h
++cfg_file.tab.h:
+ 	$(YACC) $(YACCFLAGS) -b cfg_file cfg_file.y
+ 
+-cfg_file.lex.c: cfg_file.l cfg_kwords.h config.h
++cfg_file.tab.c: cfg_file.y cfg_kwords.h config.h cfg_file.tab.h
++
++cfg_file.lex.c: cfg_file.l cfg_kwords.h config.h cfg_file.tab.h
+ 	$(LEX) $(LEXFLAGS) cfg_file.l > cfg_file.lex.c 
+ 
+ depend:

net-misc/vtun/files/vtun-3.0.2-includes.patch

@@ -0,0 +1,72 @@
+--- a/lfd_encrypt.c	2008-01-07 23:35:32.000000000 +0100
++++ b/lfd_encrypt.c	2010-09-18 04:53:31.000000000 +0200
+@@ -44,6 +44,7 @@
+ #include <strings.h>
+ #include <string.h>
+ #include <time.h>
++#include <arpa/inet.h> /* htonl() */
+ 
+ #include "vtun.h"
+ #include "linkfd.h"
+--- a/lib.c	2008-01-07 23:35:40.000000000 +0100
++++ b/lib.c	2010-09-18 04:52:51.000000000 +0200
+@@ -34,6 +34,7 @@
+ #include <sys/wait.h>
+ #include <syslog.h>
+ #include <errno.h>
++#include <time.h> /* nanosleep() */
+ 
+ #include "vtun.h"
+ #include "linkfd.h"
+--- a/lib.h	2008-01-07 23:35:41.000000000 +0100
++++ b/lib.h	2010-09-18 04:56:50.000000000 +0200
+@@ -26,6 +26,7 @@
+ #include <sys/types.h>
+ #include <signal.h>
+ #include <errno.h>
++#include <unistd.h> /* read(), write() */
+ 
+ #ifdef HAVE_LIBUTIL_H
+ #include <libutil.h>
+--- a/vtun.h	2008-01-07 23:36:07.000000000 +0100
++++ b/vtun.h	2010-09-18 04:56:08.000000000 +0200
+@@ -219,5 +219,9 @@
+ int  tunnel(struct vtun_host *host);
+ int  read_config(char *file);
+ struct vtun_host * find_host(char *host);
++int send_msg(int len, char *in, char **out);
++int send_ib_mesg(int *len, char **in);
++int recv_msg(int len, char *in, char **out);
++int recv_ib_mesg(int *len, char **in);
+ 
+ #endif
+--- a/lock.c	2008-01-07 23:35:50.000000000 +0100
++++ b/lock.c	2010-09-18 05:01:21.000000000 +0200
+@@ -32,6 +32,7 @@
+ #include <sys/types.h>
+ #include <signal.h>
+ #include <errno.h>
++#include <time.h> /* nanosleep() */
+ 
+ #include "vtun.h"
+ #include "linkfd.h"
+--- a/server	2008-01-07 23:36:01.000000000 +0100
++++ b/server.c	2010-09-18 05:02:45.000000000 +0200
+@@ -49,6 +49,7 @@
+ #include "auth.h"
+ 
+ #include "compat.h"
++#include "netlib.h" /* generic_addr() */
+ 
+ static volatile sig_atomic_t server_term;
+ static void sig_term(int sig)
+--- a/lfd_shaper.c	2008-01-07 23:35:36.000000000 +0100
++++ b/lfd_shaper.c	2010-09-18 05:07:12.000000000 +0200
+@@ -27,6 +27,7 @@
+ #include <stdlib.h>
+ #include <sys/time.h>
+ #include <syslog.h>
++#include <time.h> /* nanosleep() */
+ 
+ #include "vtun.h"
+ #include "linkfd.h"

net-misc/vtun/files/vtun-3.0.2-remove-config-presence-check.patch

@@ -0,0 +1,13 @@
+--- Makefile.in.orig	2012-06-11 23:31:11.416075337 +0400
++++ Makefile.in	2012-06-11 23:31:21.247324839 +0400
+@@ -86,9 +86,7 @@
+ 
+ install_config: 
+ 	$(INSTALL) -d -m 755 $(INSTALL_OWNER) $(DESTDIR)$(ETC_DIR)
+-	if [ ! -f $(ETC_DIR)/vtund.conf ]; then \
+-	  $(INSTALL) -m 600 $(INSTALL_OWNER) vtund.conf $(DESTDIR)$(ETC_DIR); \
+-	fi
++	$(INSTALL) -m 600 $(INSTALL_OWNER) vtund.conf $(DESTDIR)$(ETC_DIR); \
+ 
+ install: vtund install_config install_man
+ 	$(INSTALL) -d -m 755 $(INSTALL_OWNER) $(DESTDIR)$(VAR_DIR)/run

net-misc/vtun/files/vtun.rc

@@ -0,0 +1,33 @@
+#!/sbin/runscript
+# Copyright 1999-2004 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/net-misc/vtun/files/vtun.rc,v 1.8 2004/07/15 00:15:45 agriffis Exp $
+
+depend() {
+	need net
+}
+
+start() {
+	IFS=$'\n'
+	for line in `grep -v '^[[:space:]]*#' /etc/vtund-start.conf | grep -v '^[[:space:]]*$'`
+	do
+		echo $line | 
+			(IFS=" "
+			 read host server args
+			 if [ "$host" = "--server--" ]; then
+				 ebegin "Starting vtund server"
+				 /usr/sbin/vtund -s -P $server $args
+				 eend $?
+			 else
+				 ebegin "Starting vtund client $host to $server"
+				 /usr/sbin/vtund $args -- $host $server
+				 eend $?
+			 fi)
+	done
+}
+
+stop() {
+	ebegin "Stopping all vtund servers and clients"
+	killall vtund
+	eend $?
+}

net-misc/vtun/files/vtund-start.conf

@@ -0,0 +1,33 @@
+### this file defines whether vtund is run as a client or a server
+###
+### format is "[host] [server] <args>" or "--server-- [portnumber] <args>".
+###
+### [host] is the hostname to use as a client
+###
+### [server] is the server to connect to
+###
+### [args] is optional for both server and client and contains any additional
+### command line args for that instance of vtund.  not needed by most people.
+###
+### --server-- is the literal string '--server--'. nothing more, nothing less.
+###
+### [portnumber] is the port number to run the server on.
+### 
+###
+### you can have more than one client "host server" line if required,
+### and in theory, it should be possible to run as both a client and a
+### server simultaneously, but i haven't tested that.
+
+
+### examples:
+
+### to run as a client using hostname 'viper'.
+#viper vtun-server.somewhere.com.au
+
+### to run a persistent client connection using hostname 'viper'
+### connecting to a server on port 6000 and using /etc/vtun.viper.conf
+### as the config file.
+#viper vtun-server.somewhere.com.au -f /etc/vtun.viper.conf -s -P 6000
+
+### to run vtund as a server on port 5000, uncomment the following line:
+#--server-- 5000