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#include "resip/stack/SERNonceHelper.hxx"
#include "rutil/Random.hxx"
#include "resip/stack/Helper.hxx"
using namespace resip;
#define RESIPROCATE_SUBSYSTEM Subsystem::SIP
/**
* SERNonceHelper implements the makeNonce function in the same way
* as SIP Express Router (SER) - http://www.iptel.org/ser
*
* To operate a farm/cluster of UASs/proxies, you must:
* a) make sure the clocks are sychronized (using ntpd for instance)
* b) use the same privateKey value on every instance of the application
* c) call Helper::setNonceHelper(mySERNonceHelper) to over-ride
* the default implementation of NonceHelper in the reSIProcate stack
*
*/
SERNonceHelper::SERNonceHelper(int serOffset) : serOffset(serOffset)
{
//privateKey = Data("asdfklsadflkj");
privateKey = Random::getRandomHex(24);
}
SERNonceHelper::~SERNonceHelper()
{
}
void
SERNonceHelper::setPrivateKey(const Data& pprivateKey)
{
this->privateKey = pprivateKey;
}
Data
SERNonceHelper::makeNonce(const SipMessage& request, const Data& timestamp)
{
char buf[8];
Data md5buf(8, Data::Preallocate);
Data nonce(40, Data::Preallocate);
int ts = timestamp.convertInt() + serOffset;
Helper::integer2hex(buf, ts);
md5buf.append(buf, 8);
nonce.append(buf, 8);
md5buf += privateKey;
nonce += md5buf.md5();
return nonce;
}
NonceHelper::Nonce
SERNonceHelper::parseNonce(const Data& nonce)
{
if(nonce.size() != 40)
{
return SERNonceHelper::Nonce(0);
}
const char *s = nonce.data();
unsigned int ts = Helper::hex2integer(s) - serOffset;
return SERNonceHelper::Nonce(ts);
}
/* ====================================================================
* The Vovida Software License, Version 1.0
*
* Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The names "VOCAL", "Vovida Open Communication Application Library",
* and "Vovida Open Communication Application Library (VOCAL)" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact vocal@vovida.org.
*
* 4. Products derived from this software may not be called "VOCAL", nor
* may "VOCAL" appear in their name, without prior written
* permission of Vovida Networks, Inc.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
* NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
* IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* ====================================================================
*
* This software consists of voluntary contributions made by Vovida
* Networks, Inc. and many individuals on behalf of Vovida Networks,
* Inc. For more information on Vovida Networks, Inc., please see
* <http://www.vovida.org/>.
*
*/
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