rfc2617.h

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/*
 * $Id: rfc2617.h 570 2008-06-25 13:21:32Z vingarzan $
 *
 * Digest response calculation as per RFC2617
 *
 * Copyright (C) 2001-2003 FhG Fokus
 *
 * This file is part of ser, a free SIP server.
 *
 * ser 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 2 of the License, or
 * (at your option) any later version
 *
 * For a license to use the ser software under conditions
 * other than those described here, or to purchase support for this
 * software, please contact iptel.org by e-mail at the following addresses:
 *    info@iptel.org
 *
 * ser 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 this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef RFC2617_H
#define RFC2617_H

#include "../../str.h"


#define HASHLEN 16
typedef char HASH[HASHLEN];


#define HASHHEXLEN 32
typedef char HASHHEX[HASHHEXLEN+1];


/*
 * Type of algorithm used
 */
typedef enum {
    HA_MD5,      /* Plain MD5 */
    HA_MD5_SESS, /* MD5-Session */
} ha_alg_t;


/*
 * Convert to hex form
 */
void cvt_hex(HASH Bin, HASHHEX Hex);


/* 
 * calculate H(A1) as per HTTP Digest spec 
 */
void calc_HA1(ha_alg_t _alg,      /* Type of algorithm */
          str* _username,     /* username */
          str* _realm,        /* realm */
          str* _password,     /* password */
          str* _nonce,        /* nonce string */
          str* _cnonce,       /* cnonce */
          HASHHEX _sess_key); /* Result will be stored here */

void calc_H(str *ent, HASHHEX hash);

/* calculate request-digest/response-digest as per HTTP Digest spec */
void calc_response(HASHHEX _ha1,       /* H(A1) */
           str* _nonce,        /* nonce from server */
           str* _nc,           /* 8 hex digits */
           str* _cnonce,       /* client nonce */
           str* _qop,          /* qop-value: "", "auth", "auth-int" */
           int _auth_int,      /* 1 if auth-int is used */
           str* _method,       /* method from the request */
           str* _uri,          /* requested URL */
           HASHHEX _hentity,   /* H(entity body) if qop="auth-int" */
           HASHHEX _response); /* request-digest or response-digest */


#endif /* RFC2617_H */

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