/* ====================================================================
 * 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/>.
 *
 *
 
 
 
*RFC 2617                  HTTP Authentication                  June 1999
*
*
*  Full Copyright Statement
*
*   Copyright (C) The Internet Society (1999).  All Rights Reserved.
*
*   This document and translations of it may be copied and furnished to
*   others, and derivative works that comment on or otherwise explain it
*   or assist in its implementation may be prepared, copied, published
*   and distributed, in whole or in part, without restriction of any
*   kind, provided that the above copyright notice and this paragraph are
*   included on all such copies and derivative works.  However, this
*   document itself may not be modified in any way, such as by removing
*   the copyright notice or references to the Internet Society or other
*   Internet organizations, except as needed for the purpose of
*   developing Internet standards in which case the procedures for
*   copyrights defined in the Internet Standards process must be
*   followed, or as required to translate it into languages other than
*   English.
 
*   The limited permissions granted above are perpetual and will not be
*   revoked by the Internet Society or its successors or assigns.
 
*   This document and the information contained herein is provided on an
*   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
*   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
*   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
*   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
*   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 
*/

#include <stdio.h>
#include <global.h>
#include <string.h>
#include "vmd5.h"
#include "support.hxx"


#define HASHLEN 16
typedef char HASH[HASHLEN];
#define HASHHEXLEN 32
typedef char HASHHEX[HASHHEXLEN + 1];
#ifdef WIN32
#undef IN
#endif
#define IN const
#define OUT


/* calculate H(A1) as per HTTP Digest spec */
extern void
    DigestCalcHA1(
        IN char * pszAlg,
        IN char * pszUserName,
        IN char * pszRealm,
        IN char * pszPassword,
        IN char * pszNonce,
        IN char * pszCNonce,
        OUT HASHHEX SessionKey
    );

/* calculate request-digest/response-digest as per HTTP Digest spec */
extern void
    DigestCalcResponse(
        IN HASHHEX HA1,            /* H(A1) */
        IN char * pszNonce,        /* nonce from server */
        IN char * pszNonceCount,   /* 8 hex digits */
        IN char * pszCNonce,       /* client nonce */
        IN char * pszQop,          /* qop-value: "", "auth", "auth-int" */
        IN char * pszMethod,       /* method from the request */
        IN char * pszDigestUri,    /* requested URL */
        IN HASHHEX HEntity,        /* H(entity body) if qop="auth-int" */
        OUT HASHHEX Response      /* request-digest or response-digest */
    );



extern void
    CvtHex(
        IN HASH Bin,
        OUT HASHHEX Hex
    );