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/*
* 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 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) 2007-2014 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 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
* 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 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 <string>
#include <stdexcept>
#include "authAlgoFactory.h"
#include "authAlgo.h"
#include "anytunError.h"
AuthAlgo* AuthAlgoFactory::create(std::string const& type, kd_dir_t dir)
{
if(type == "null") {
return new NullAuthAlgo();
}
#ifndef NO_CRYPT
else if(type == "sha1") {
Sha1AuthAlgo* a = new Sha1AuthAlgo(dir);
if(!a || !(a->Init())) {
if(a)
delete a;
AnytunError::throwErr() << "failed to initialize SHA1 auth algo";
}
return a;
}
#endif
else {
throw std::invalid_argument("auth algo not available");
}
}
uint32_t AuthAlgoFactory::getDigestLength(std::string const& type)
{
if(type == "null") {
return NullAuthAlgo::DIGEST_LENGTH;
}
#ifndef NO_CRYPT
else if(type == "sha1") {
return Sha1AuthAlgo::DIGEST_LENGTH;
}
#endif
else {
throw std::invalid_argument("auth algo not available");
}
}
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