/*
This file is part of GNUnet.
- (C) 2010 Christian Grothoff
+ (C) 2010, 2012 Christian Grothoff
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
*/
/**
- * @file vpn/gnunet-daemon-vpn.c
- * @brief the helper for various vpn-daemons. Opens a virtual network-interface,
+ * @file vpn/gnunet-helper-vpn.c
+ * @brief the helper for the VPN service. Opens a virtual network-interface,
* sends data received on the if to stdout, sends data received on stdin to the
* interface
* @author Philipp Tölke
+ * @author Christian Grothoff
*
* The following list of people have reviewed this code and considered
* it safe since the last modification (if you reviewed it, please
/**
* Need 'struct GNUNET_MessageHeader'.
*/
+#include "gnunet_crypto_lib.h"
#include "gnunet_common.h"
/**
* @param argc must be 6
* @param argv 0: binary name (gnunet-helper-vpn)
* 1: tunnel interface name (gnunet-vpn)
- * 2: IPv6 address (::1)
- * 3: IPv6 netmask length in bits (64)
- * 4: IPv4 address (1.2.3.4)
- * 5: IPv4 netmask (255.255.0.0)
+ * 2: IPv6 address (::1), "-" to disable
+ * 3: IPv6 netmask length in bits (64), ignored if #2 is "-"
+ * 4: IPv4 address (1.2.3.4), "-" to disable
+ * 5: IPv4 netmask (255.255.0.0), ignored if #4 is "-"
*/
int
main (int argc, char **argv)
if (-1 == (fd_tun = init_tun (dev)))
{
- fprintf (stderr, "Fatal: could not initialize tun-interface\n");
+ fprintf (stderr, "Fatal: could not initialize tun-interface `%s' with IPv6 %s/%s and IPv4 %s/%s\n",
+ dev,
+ argv[2],
+ argv[3],
+ argv[4],
+ argv[5]);
return 1;
}
+ if (0 != strcmp (argv[2], "-"))
{
const char *address = argv[2];
long prefix_len = atol (argv[3]);
set_address6 (dev, address, prefix_len);
}
+ if (0 != strcmp (argv[4], "-"))
{
const char *address = argv[4];
const char *mask = argv[5];
set_address4 (dev, address, mask);
}
-
+
uid_t uid = getuid ();
#ifdef HAVE_SETRESUID
if (0 != setresuid (uid, uid, uid))