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-rw-r--r--src/ovpn/tunDevice.cpp172
-rw-r--r--src/ovpn/tunDevice.h66
2 files changed, 238 insertions, 0 deletions
diff --git a/src/ovpn/tunDevice.cpp b/src/ovpn/tunDevice.cpp
new file mode 100644
index 0000000..b3c07b0
--- /dev/null
+++ b/src/ovpn/tunDevice.cpp
@@ -0,0 +1,172 @@
+/*
+ * anytun
+ *
+ * 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 anytun.org <satp@wirdorange.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * 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
+ * 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 this program (see the file COPYING included with this
+ * distribution); if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdexcept>
+#include <poll.h>
+
+extern "C" {
+#include "openvpn/config.h"
+#include "openvpn/syshead.h"
+#include "openvpn/tun.h"
+}
+
+#include "tunDevice.h"
+#include "threadUtils.hpp"
+
+
+TunDevice::TunDevice(const char* dev_name,const char* dev_type, const char* ifcfg_lp, const char* ifcfg_rnmp)
+{
+ dev_ = NULL;
+
+// init_tun (const char *dev, /* --dev option */
+// const char *dev_type, /* --dev-type option */
+// const char *ifconfig_local_parm, /* --ifconfig parm 1 */
+// const char *ifconfig_remote_netmask_parm, /* --ifconfig parm 2 */
+// in_addr_t local_public,
+// in_addr_t remote_public,
+// const bool strict_warn,
+// struct env_set *es)
+
+// init_tun_post (struct tuntap *tt,
+// const struct frame *frame,
+// const struct tuntap_options *options)
+
+// open_tun (const char *dev,
+// const char *dev_type,
+// const char *dev_node,
+// bool ipv6,
+// struct tuntap *tt)
+
+// -------------------------------------------
+
+// c->c1.tuntap = init_tun (c->options.dev,
+// c->options.dev_type,
+// c->options.ifconfig_local,
+// c->options.ifconfig_remote_netmask,
+// addr_host (&c->c1.link_socket_addr.local),
+// addr_host (&c->c1.link_socket_addr.remote),
+// !c->options.ifconfig_nowarn,
+// c->c2.es);
+
+// init_tun_post (c->c1.tuntap,
+// &c->c2.frame,
+// &c->options.tuntap_options);
+
+// open_tun (c->options.dev,
+// c->options.dev_type,
+// c->options.dev_node,
+// c->options.tun_ipv6,
+// c->c1.tuntap);
+
+
+
+ in_addr_t lp, rp;
+
+// lp = inet_addr("192.168.198.1");
+// rp = inet_addr("192.168.199.1");
+
+ dev_ = init_tun(dev_name, dev_type, ifcfg_lp, ifcfg_rnmp, lp, rp, 0, NULL);
+ struct frame frame;
+ struct tuntap_options options;
+
+#ifdef TARGET_LINUX
+ options.txqueuelen = 100;
+#endif
+
+ init_tun_post(dev_, &frame, &options);
+ if(!dev_)
+ throw std::runtime_error("can't init tun/tap device");
+
+ open_tun (dev_name, NULL, NULL, true, dev_);
+ do_ifconfig(dev_, dev_->actual_name, 1400, NULL);
+}
+
+TunDevice::~TunDevice()
+{
+ if(dev_)
+ close_tun(dev_);
+}
+
+short TunDevice::read(u_int8_t* buf, u_int32_t len)
+{
+ if(!dev_)
+ return -1;
+
+ struct pollfd pfd[1];
+ pfd[0].fd = tun_event_handle(dev_);
+ pfd[0].events = POLLIN | POLLPRI;
+ pfd[0].revents = 0;
+ poll(pfd, 1, -1);
+ Lock lock(io_mutex_);
+ return read_tun(dev_, buf, len);
+}
+
+int TunDevice::write(u_int8_t* buf, u_int32_t len)
+{
+ if(!dev_)
+ return -1;
+ Lock lock(io_mutex_);
+ return write_tun(dev_, buf, len);
+}
+
+char* TunDevice::getActualName()
+{
+ if(!dev_)
+ return NULL;
+
+ return dev_->actual_name;
+}
+
+u_int32_t TunDevice::getType()
+{
+ if(!dev_)
+ return TYPE_UNDEF;
+
+ switch(dev_->type)
+ {
+ case DEV_TYPE_TUN: return TYPE_TUN;
+ case DEV_TYPE_TAP: return TYPE_TAP;
+ }
+ return TYPE_UNDEF;
+}
+
+const char* TunDevice::getTypeString()
+{
+ if(!dev_)
+ return NULL;
+
+ switch(dev_->type)
+ {
+ case DEV_TYPE_UNDEF: return "undef"; break;
+ case DEV_TYPE_TUN: return "tun"; break;
+ case DEV_TYPE_TAP: return "tap"; break;
+ }
+ return NULL;
+}
diff --git a/src/ovpn/tunDevice.h b/src/ovpn/tunDevice.h
new file mode 100644
index 0000000..af08132
--- /dev/null
+++ b/src/ovpn/tunDevice.h
@@ -0,0 +1,66 @@
+/*
+ * anytun
+ *
+ * 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 anytun.org <satp@wirdorange.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * 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
+ * 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 this program (see the file COPYING included with this
+ * distribution); if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _TUNDEVICE_H_
+#define _TUNDEVICE_H_
+
+#include "buffer.h"
+#include "threadUtils.hpp"
+
+class TunDevice
+{
+public:
+ static const u_int32_t TYPE_UNDEF = 0;
+ static const u_int32_t TYPE_TUN = 1;
+ static const u_int32_t TYPE_TAP = 2;
+
+ TunDevice(const char* dev,const char* dev_type, const char* ifcfg_lp, const char* ifcfg_rnmp);
+ ~TunDevice();
+
+ void open();
+ void close();
+ bool isOpen();
+
+ short read(u_int8_t* buf, u_int32_t len);
+ int write(u_int8_t* buf, u_int32_t len);
+
+ char* getActualName();
+ u_int32_t getType();
+ const char* getTypeString();
+
+private:
+ void operator=(const TunDevice &src);
+ TunDevice(const TunDevice &src);
+
+ Mutex io_mutex_;
+ struct tuntap *dev_;
+};
+
+#endif
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