141 lines
4.9 KiB
C++
141 lines
4.9 KiB
C++
#if !defined(RESIP_SHA1STREAM_HXX)
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#define RESIP_SHA1STREAM_HXX
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#if defined(HAVE_CONFIG_H)
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#include "config.h"
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#endif
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#include <iostream>
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#include <memory>
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#include <vector>
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#include "rutil/Data.hxx"
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// This will not be compiled or installed if USE_SSL isn't set. If you are
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// including this file from a source tree, and you are getting link errors, you
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// are probably trying to link against libs that were built without SSL support.
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// Either stop trying to use this file, or re-build the libs with ssl support
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// enabled.
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//#if defined (USE_SSL)
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//# include "openssl/sha.h"
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//#else
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//// !kh!
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//// so it would compile without openssl.
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//// also see my comment below.
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//typedef int SHA_CTX;
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//#endif // USE_SSL
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# include "openssl/sha.h"
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namespace resip
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{
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/**
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@brief An implementation of std::streambuf used to back the SHA1Stream.
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*/
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class SHA1Buffer : public std::streambuf
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{
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public:
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SHA1Buffer();
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virtual ~SHA1Buffer();
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/** @returns the SHA1 hexadecimal representation of the data from the buffer
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*/
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Data getHex();
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/**
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@param bits the lowest order bits in network byte order. bits must be
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multiple of 8
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@returns the SHA1 binary representation of the data from the buffer
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*/
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Data getBin(unsigned int bits);
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protected:
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virtual int sync();
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virtual int overflow(int c = -1);
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private:
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// !kh!
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// used pointers to keep the same object layout.
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// this adds overhead, two additional new/delete.
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// could get rid of the overhead if, sizeof(SHA_CTX) and SHA_DIGEST_LENGTH are known and FIXED.
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// could use pimpl to get rid of one new/delete pair.
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std::unique_ptr<SHA_CTX> mContext;
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std::vector<char> mBuf;
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bool mBlown;
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};
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/**
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@brief Used to accumlate data written to the stream in a SHA1Buffer and
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convert the data to SHA1.
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*/
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class SHA1Stream : private SHA1Buffer, public std::ostream
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{
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public:
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SHA1Stream();
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~SHA1Stream();
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/** Calls flush() on itself and returns the SHA1 data in hex format.
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@returns the SHA1 hexadecimal representation of the data written to the stream
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*/
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Data getHex();
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/** Calls flush() on itself and returns the SHA1 data in binary format.
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@param bits the lowest order bits in network byte order. bits must be
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multiple of 8
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@returns the SHA1 binary representation of the data written to the stream
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*/
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Data getBin(unsigned int bits=160);
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/** Calls getBin(32) and converts to a UInt32 */
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UInt32 getUInt32();
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};
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}
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#endif
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/* ====================================================================
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* The Vovida Software License, Version 1.0
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*
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* Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The names "VOCAL", "Vovida Open Communication Application Library",
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* and "Vovida Open Communication Application Library (VOCAL)" must
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* not be used to endorse or promote products derived from this
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* software without prior written permission. For written
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* permission, please contact vocal@vovida.org.
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*
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* 4. Products derived from this software may not be called "VOCAL", nor
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* may "VOCAL" appear in their name, without prior written
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* permission of Vovida Networks, Inc.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
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* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
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* NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
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* IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* ====================================================================
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*
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* This software consists of voluntary contributions made by Vovida
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* Networks, Inc. and many individuals on behalf of Vovida Networks,
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* Inc. For more information on Vovida Networks, Inc., please see
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* <http://www.vovida.org/>.
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*
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*/
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