* 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) 2007-2009 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.
* 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 <stdexcept>
#include "plainPacket.h"
#include "anytunError.h"
-PlainPacket::PlainPacket(u_int32_t payload_length, bool allow_realloc) : Buffer(payload_length + sizeof(payload_type_t), allow_realloc)
+PlainPacket::PlainPacket(uint32_t payload_length, bool allow_realloc) : Buffer(payload_length + sizeof(payload_type_t), allow_realloc)
{
payload_type_ = reinterpret_cast<payload_type_t*>(buf_);
payload_ = buf_ + sizeof(payload_type_t);
*payload_type_ = 0;
}
-u_int32_t PlainPacket::getHeaderLength()
+uint32_t PlainPacket::getHeaderLength()
{
return sizeof(payload_type_t);
}
payload_type_t PlainPacket::getPayloadType() const
{
- if(payload_type_)
+ if(payload_type_) {
return PAYLOAD_TYPE_T_NTOH(*payload_type_);
+ }
return 0;
}
void PlainPacket::setPayloadType(payload_type_t payload_type)
{
- if(!payload_type_)
+ if(!payload_type_) {
return;
-
+ }
+
if(payload_type == PAYLOAD_TYPE_TUN) {
if(!payload_) {
*payload_type_ = PAYLOAD_TYPE_T_HTON(PAYLOAD_TYPE_TUN);
return;
}
- char * ip_version_ptr = reinterpret_cast<char *>(payload_);
- char ip_version = ip_version_ptr[0];
- ip_version >>=4;
- if(ip_version == 4)
+ char* ip_version_ptr = reinterpret_cast<char*>(payload_);
+ char ip_version = ip_version_ptr[0];
+ ip_version >>=4;
+ if(ip_version == 4) {
*payload_type_ = PAYLOAD_TYPE_T_HTON(PAYLOAD_TYPE_TUN4);
- else if(ip_version == 6)
+ } else if(ip_version == 6) {
*payload_type_ = PAYLOAD_TYPE_T_HTON(PAYLOAD_TYPE_TUN6);
- }
- else
+ }
+ } else {
*payload_type_ = PAYLOAD_TYPE_T_HTON(payload_type);
+ }
}
-u_int32_t PlainPacket::getPayloadLength() const
+uint32_t PlainPacket::getPayloadLength() const
{
- if(!payload_)
+ if(!payload_) {
return 0;
+ }
return (length_ > sizeof(payload_type_t)) ? (length_ - sizeof(payload_type_t)) : 0;
}
-
-void PlainPacket::setPayloadLength(u_int32_t payload_length)
+
+void PlainPacket::setPayloadLength(uint32_t payload_length)
{
Buffer::setLength(payload_length + sizeof(payload_type_t));
- // depending on allow_realloc buf_ may point to another address
- // therefore in this case reinit() gets called by Buffer::setLength()
+ // depending on allow_realloc buf_ may point to another address
+ // therefore in this case reinit() gets called by Buffer::setLength()
}
void PlainPacket::reinit()
payload_type_ = reinterpret_cast<payload_type_t*>(buf_);
payload_ = buf_ + sizeof(payload_type_t);
- if(length_ <= (sizeof(payload_type_t)))
+ if(length_ <= (sizeof(payload_type_t))) {
payload_ = NULL;
+ }
if(length_ < (sizeof(payload_type_t))) {
payload_type_ = NULL;
- AnytunError::throwErr() << "plain packet can't be initialized, buffer is too small";
+ AnytunError::throwErr() << "plain packet can't be initialized, buffer is too small";
}
}
-u_int8_t* PlainPacket::getPayload()
+uint8_t* PlainPacket::getPayload()
{
return payload_;
}
NetworkAddress PlainPacket::getDstAddr() const
{
- if(!payload_type_ || !payload_)
- return NetworkAddress();
-
- payload_type_t type = PAYLOAD_TYPE_T_NTOH(*payload_type_);
-
- if(type == PAYLOAD_TYPE_TAP) // Ehternet
- {
- // TODO
- return NetworkAddress();
- }
- else if(type == PAYLOAD_TYPE_TUN4) // IPv4
- {
- if(length_ < (sizeof(payload_type_t)+5*4))
- return NetworkAddress();
- char * hdr = reinterpret_cast<char *>(payload_);
- boost::asio::ip::address_v4::bytes_type ip_octets;
- for (int i=0; i<4;i++)
- ip_octets[i]=hdr[4*4+i];
- return NetworkAddress(boost::asio::ip::address_v4(ip_octets));
- }
- else if(type == PAYLOAD_TYPE_TUN6) // IPv6
- {
- if(length_ < (sizeof(payload_type_t)+2*16+2*4))
- return NetworkAddress();
- char * hdr = reinterpret_cast<char *>(payload_);
- boost::asio::ip::address_v6::bytes_type ip_octets;
- for (int i=0; i<16;i++)
- ip_octets[i]=hdr[2*4+16+i];
- return NetworkAddress(boost::asio::ip::address_v6(ip_octets));
- }
- return NetworkAddress();
+ if(!payload_type_ || !payload_) {
+ return NetworkAddress();
+ }
+
+ payload_type_t type = PAYLOAD_TYPE_T_NTOH(*payload_type_);
+
+ if(type == PAYLOAD_TYPE_TAP) { // Ehternet
+ // TODO
+ return NetworkAddress();
+ } else if(type == PAYLOAD_TYPE_TUN4) { // IPv4
+ if(length_ < (sizeof(payload_type_t)+5*4)) {
+ return NetworkAddress();
+ }
+ char* hdr = reinterpret_cast<char*>(payload_);
+ boost::asio::ip::address_v4::bytes_type ip_octets;
+ for(int i=0; i<4; i++) {
+ ip_octets[i]=hdr[4*4+i];
+ }
+ return NetworkAddress(boost::asio::ip::address_v4(ip_octets));
+ } else if(type == PAYLOAD_TYPE_TUN6) { // IPv6
+ if(length_ < (sizeof(payload_type_t)+2*16+2*4)) {
+ return NetworkAddress();
+ }
+ char* hdr = reinterpret_cast<char*>(payload_);
+ boost::asio::ip::address_v6::bytes_type ip_octets;
+ for(int i=0; i<16; i++) {
+ ip_octets[i]=hdr[2*4+16+i];
+ }
+ return NetworkAddress(boost::asio::ip::address_v6(ip_octets));
+ }
+ return NetworkAddress();
}