1 files changed, 157 insertions, 0 deletions

diff --git a/src/bsd/tun.c b/src/bsd/tun.c
new file mode 100644
index 0000000..b34c50d
--- /dev/null
+++ b/src/bsd/tun.c
@@ -0,0 +1,157 @@
+/*
+ *  ľAnytun
+ *
+ *  ľAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation ľAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of ľAnytun.
+ *
+ *  ľAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 3 as
+ *  published by the Free Software Foundation.
+ *
+ *  ľAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with ľAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "datatypes.h"
+
+#include "tun.h"
+
+#include "tun_helper.h"
+
+#include "log.h"
+
+void tun_init(tun_device_t** dev, const char* dev_name, const char* dev_type, const char* ifcfg_lp, const char* ifcfg_rnmp)
+{
+  if(!dev) 
+    return;
+ 
+  *dev = malloc(sizeof(tun_device_t));
+  if(!*dev) 
+    return;
+
+  tun_conf(*dev, dev_name, dev_type, ifcfg_lp, ifcfg_rnmp, 1400);
+
+
+  if(ifcfg_lp && ifcfg_rnmp)
+    tun_do_ifconfig(*dev);
+}
+
+void tun_init_post(tun_device_t* dev)
+{
+// nothing yet
+}
+
+void tun_close(tun_device_t** dev)
+{
+  if(!dev || !(*dev))
+    return;
+
+  if((*dev)->fd_ > 0)
+    close((*dev)->fd_);
+
+  if((*dev)->actual_name_)
+    free((*dev)->actual_name_);
+
+  if((*dev)->local_)
+    free((*dev)->local_);
+
+  if((*dev)->remote_netmask_)
+    free((*dev)->remote_netmask_);
+
+  free(*dev);
+  *dev = NULL;
+}
+
+int tun_read(tun_device_t* dev, u_int8_t* buf, u_int32_t len)
+{
+/*   if(!dev || dev->fd_ < 0) */
+/*     return -1; */
+
+/*   if(dev->with_pi_) */
+/*   { */
+/*     struct iovec iov[2]; */
+/*     struct tun_pi tpi; */
+    
+/*     iov[0].iov_base = &tpi; */
+/*     iov[0].iov_len = sizeof(tpi); */
+/*     iov[1].iov_base = buf; */
+/*     iov[1].iov_len = len; */
+/*     return(tun_fix_return(readv(dev->fd_, iov, 2), sizeof(tpi))); */
+/*   } */
+/*   else */
+/*     return(read(dev->fd_, buf, len)); */
+  return -1;
+}
+
+int tun_write(tun_device_t* dev, u_int8_t* buf, u_int32_t len)
+{
+/*   if(!dev || dev->fd_ < 0) */
+/*     return -1; */
+
+/*   if(dev->with_pi_) */
+/*   { */
+/*     struct iovec iov[2]; */
+/*     struct tun_pi tpi; */
+/*     struct iphdr *hdr = (struct iphdr *)buf; */
+    
+/*     tpi.flags = 0; */
+/*     if(hdr->version == 4) */
+/*       tpi.proto = htons(ETH_P_IP); */
+/*     else */
+/*       tpi.proto = htons(ETH_P_IPV6); */
+    
+/*     iov[0].iov_base = &tpi; */
+/*     iov[0].iov_len = sizeof(tpi); */
+/*     iov[1].iov_base = buf; */
+/*     iov[1].iov_len = len; */
+/*     return(tun_fix_return(writev(dev->fd_, iov, 2), sizeof(tpi))); */
+/*   } */
+/*   else */
+/*     return(write(dev->fd_, buf, len)); */
+  return -1;
+}
+
+void tun_do_ifconfig(tun_device_t* dev)
+{
+/*   if(!dev || !dev->actual_name_ || !dev->local_ || !dev->remote_netmask_) */
+/*     return; */
+
+/*   char* command = NULL; */
+/*   if(dev->type_ == TYPE_TUN) */
+/*     asprintf(&command, "/sbin/ifconfig %s %s pointopoint %s mtu %d", dev->actual_name_, dev->local_, dev->remote_netmask_, dev->mtu_); */
+/*   else */
+/*     asprintf(&command, "/sbin/ifconfig %s %s netmask %s mtu %d", dev->actual_name_, dev->local_, dev->remote_netmask_, dev->mtu_); */
+
+/*   if(!command) { */
+/*     log_printf(ERR, "Execution of ifconfig failed"); */
+/*     return; */
+/*   } */
+
+/*   int result = system(command); */
+/*   if(result == -1) */
+/*     log_printf(ERR, "Execution of ifconfig failed"); */
+/*   else */
+/*     log_printf(NOTICE, "ifconfig returned %d", WEXITSTATUS(result)); */
+
+/*   free(command); */
+}