* 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
+ * message authentication based on the methods 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 Othmar Gsenger, Erwin Nindl,
+ * Copyright (C) 2007-2014 Markus Grüneis, Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun 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.
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
*
* Anytun is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with anytun. If not, see <http://www.gnu.org/licenses/>.
+ * along with Anytun. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL. If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so. If you
+ * do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source
+ * files in the program, then also delete it here.
*/
+#include <sstream>
+#include <boost/assign.hpp>
+
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <netinet/in.h>
#include <netinet/ip.h>
-#include <sstream>
-
#include "tunDevice.h"
#include "threadUtils.hpp"
#include "log.h"
#include "anytunError.h"
+#include "sysExec.h"
#define DEVICE_FILE_MAX 255
-TunDevice::TunDevice(std::string dev_name, std::string dev_type, std::string ifcfg_addr, std::string ifcfg_prefix) : conf_(dev_name, dev_type, ifcfg_addr, ifcfg_prefix, 1400)
+TunDevice::TunDevice(std::string dev_name, std::string dev_type, std::string ifcfg_addr, uint16_t ifcfg_prefix) : conf_(dev_name, dev_type, ifcfg_addr, ifcfg_prefix, 1400),sys_exec_(NULL)
{
std::string device_file = "/dev/";
bool dynamic = true;
else if(conf_.type_ == TYPE_TUN) {
device_file.append("tun");
actual_name_ = "tun";
- }
- else if(conf_.type_ == TYPE_TAP) {
+ } else if(conf_.type_ == TYPE_TAP) {
device_file.append("tap");
actual_name_ = "tap";
}
#endif
- else
+ else {
AnytunError::throwErr() << "unable to recognize type of device (tun or tap)";
+ }
- u_int32_t dev_id=0;
+ uint32_t dev_id=0;
if(dynamic) {
for(; dev_id <= DEVICE_FILE_MAX; ++dev_id) {
std::ostringstream ds;
ds << device_file;
ds << dev_id;
fd_ = ::open(ds.str().c_str(), O_RDWR);
- if(fd_ >= 0)
+ if(fd_ >= 0) {
break;
+ }
}
- }
- else
+ } else {
fd_ = ::open(device_file.c_str(), O_RDWR);
+ }
if(fd_ < 0) {
- if(dynamic)
+ if(dynamic) {
AnytunError::throwErr() << "can't open device file dynamically: no unused node left";
- else
+ } else {
AnytunError::throwErr() << "can't open device file (" << device_file << "): " << AnytunErrno(errno);
+ }
}
if(dynamic) {
s << actual_name_;
s << dev_id;
actual_name_ = s.str();
- }
- else
+ } else {
actual_name_ = dev_name;
-
+ }
+
actual_node_ = device_file;
init_post();
- if(ifcfg_addr != "")
+ if(ifcfg_addr != "") {
do_ifconfig();
+ }
}
TunDevice::~TunDevice()
{
- if(fd_ > 0)
+ if(fd_ > 0) {
::close(fd_);
+ }
}
#if defined(__GNUC__) && defined(__OpenBSD__)
void TunDevice::init_post()
{
with_pi_ = true;
- if(conf_.type_ == TYPE_TAP)
+ if(conf_.type_ == TYPE_TAP) {
with_pi_ = false;
-
- struct tuninfo ti;
+ }
- if (ioctl(fd_, TUNGIFINFO, &ti) < 0) {
+ struct tuninfo ti;
+
+ if(ioctl(fd_, TUNGIFINFO, &ti) < 0) {
::close(fd_);
AnytunError::throwErr() << "can't enable multicast for interface: " << AnytunErrno(errno);
}
-
+
ti.flags |= IFF_MULTICAST;
- if(conf_.type_ == TYPE_TUN)
+ if(conf_.type_ == TYPE_TUN) {
ti.flags &= ~IFF_POINTOPOINT;
-
- if (ioctl(fd_, TUNSIFINFO, &ti) < 0) {
+ }
+
+ if(ioctl(fd_, TUNSIFINFO, &ti) < 0) {
::close(fd_);
AnytunError::throwErr() << "can't enable multicast for interface: " << AnytunErrno(errno);
}
}
-#elif defined(__GNUC__) && defined(__FreeBSD__)
+#elif defined(__GNUC__) && (defined(__FreeBSD__) || defined(__FreeBSD_kernel__))
void TunDevice::init_post()
{
with_pi_ = true;
- if(conf_.type_ == TYPE_TAP)
+ if(conf_.type_ == TYPE_TAP) {
with_pi_ = false;
+ }
- if(dev->type_ == TYPE_TUN) {
+ if(conf_.type_ == TYPE_TUN) {
int arg = 0;
- if(ioctl(dev->fd_, TUNSLMODE, &arg) < 0) {
+ if(ioctl(fd_, TUNSLMODE, &arg) < 0) {
::close(fd_);
AnytunError::throwErr() << "can't disable link-layer mode for interface: " << AnytunErrno(errno);
}
arg = 1;
- if(ioctl(dev->fd_, TUNSIFHEAD, &arg) < 0) {
+ if(ioctl(fd_, TUNSIFHEAD, &arg) < 0) {
::close(fd_);
AnytunError::throwErr() << "can't enable multi-af modefor interface: " << AnytunErrno(errno);
}
arg = IFF_BROADCAST;
arg |= IFF_MULTICAST;
- if(ioctl(dev->fd_, TUNSIFMODE, &arg) < 0) {
+ if(ioctl(fd_, TUNSIFMODE, &arg) < 0) {
::close(fd_);
AnytunError::throwErr() << "can't enable multicast for interface: " << AnytunErrno(errno);
}
}
#else
- #error This Device works just for OpenBSD, FreeBSD or NetBSD
+#error This Device works just for OpenBSD, FreeBSD or NetBSD
#endif
int TunDevice::fix_return(int ret, size_t pi_length) const
{
- if(ret < 0)
+ if(ret < 0) {
return ret;
+ }
- return (static_cast<size_t>(ret) > type_length ? (ret - type_length) : 0);
+ return (static_cast<size_t>(ret) > pi_length ? (ret - pi_length) : 0);
}
-int TunDevice::read(u_int8_t* buf, u_int32_t len)
+int TunDevice::read(uint8_t* buf, uint32_t len)
{
- if(fd_ < 0)
+ if(fd_ < 0) {
return -1;
-
+ }
+
if(with_pi_) {
struct iovec iov[2];
- u_int32_t type;
-
+ uint32_t type;
+
iov[0].iov_base = &type;
iov[0].iov_len = sizeof(type);
iov[1].iov_base = buf;
iov[1].iov_len = len;
return(fix_return(::readv(fd_, iov, 2), sizeof(type)));
- }
- else
+ } else {
return(::read(fd_, buf, len));
+ }
}
-int TunDevice::write(u_int8_t* buf, u_int32_t len)
+int TunDevice::write(uint8_t* buf, uint32_t len)
{
- if(fd_ < 0)
+ if(fd_ < 0) {
return -1;
-
- if(!buf)
+ }
+
+ if(!buf) {
return 0;
+ }
if(with_pi_) {
struct iovec iov[2];
- u_int32_t type;
- struct ip *hdr = reinterpret_cast<struct ip*>(buf);
-
+ uint32_t type;
+ struct ip* hdr = reinterpret_cast<struct ip*>(buf);
+
type = 0;
- if(hdr->ip_v == 4)
+ if(hdr->ip_v == 4) {
type = htonl(AF_INET);
- else
+ } else {
type = htonl(AF_INET6);
-
+ }
+
iov[0].iov_base = &type;
iov[0].iov_len = sizeof(type);
iov[1].iov_base = buf;
iov[1].iov_len = len;
return(fix_return(::writev(fd_, iov, 2), sizeof(type)));
- }
- else
+ } else {
return(::write(fd_, buf, len));
+ }
}
void TunDevice::do_ifconfig()
{
- std::ostringstream command;
- command << "/sbin/ifconfig " << actual_name_ << " " << conf_.addr_.toString()
- << " netmask " << conf_.netmask_.toString() << " mtu " << conf_.mtu_;
+ std::ostringstream mtu_ss;
+ mtu_ss << conf_.mtu_;
+ StringVector args = boost::assign::list_of(actual_name_)(conf_.addr_.toString())("netmask")(conf_.netmask_.toString())("mtu")(mtu_ss.str());
- if(conf_.type_ == TYPE_TUN)
- command << " up";
- else {
+ if(conf_.type_ == TYPE_TUN) {
+ args.push_back("up");
+ } else {
#if defined(__GNUC__) && defined(__OpenBSD__)
- command << " link0";
-#elif defined(__GNUC__) && defined(__FreeBSD__)
- command << " up";
+ args.push_back("link0");
+#elif defined(__GNUC__) && (defined(__FreeBSD__) || defined(__FreeBSD_kernel__))
+ args.push_back("up");
#elif defined(__GNUC__) && defined(__NetBSD__)
- command << "";
+ // nothing to be done here
#else
- #error This Device works just for OpenBSD, FreeBSD or NetBSD
+#error This Device works just for OpenBSD, FreeBSD or NetBSD
#endif
}
+ sys_exec_ = new SysExec("/sbin/ifconfig", args);
+}
- int result = system(command.str().c_str());
- if(result == -1)
- cLog.msg(Log::PRIO_ERROR) << "Execution of ifconfig failed" << AnytunErrno(errno);
- else {
- if(WIFEXITED(result))
- cLog.msg(Log::PRIO_NOTICE) << "ifconfig returned " << WEXITSTATUS(result);
- else if(WIFSIGNALED(result))
- cLog.msg(Log::PRIO_NOTICE) << "ifconfig terminated after signal " << WTERMSIG(result);
- else
- cLog.msg(Log::PRIO_ERROR) << "Execution of ifconfig: unkown error";
+void TunDevice::waitUntilReady()
+{
+ if(sys_exec_) {
+ SysExec::waitAndDestroy(sys_exec_);
}
-
}
+
projects / anytun.git / blobdiff