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/*
* Copyright (c) 2004, Nate Nielsen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * 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.
* * The names of contributors to this software may not be
* used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 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.
*
*
* CONTRIBUTORS
* Nate Nielsen <nielsen@memberwebs.com>
*
*/
#ifndef __DIGEST_H__
#define __DIGEST_H__
#include "md5.h"
#define DIGEST_NONCE_LEN sizeof(time_t) + sizeof(unsigned int) + MD5_LEN
#define DIGEST_SECRET_LEN 16
/* Parsed Digest response from the client */
typedef struct digest_header
{
const char* scheme;
const char* realm;
const char* username;
const char* nonce;
const char* uri;
const char* method;
const char* digest;
const char* algorithm;
const char* cnonce;
const char* opaque;
const char* qop;
const char* nc;
}
digest_header_t;
typedef struct digest_context
{
digest_header_t client;
long server_nc;
const char* server_uri;
const char* server_method;
unsigned char ha1[MD5_LEN];
}
digest_context_t;
void digest_makeha1(unsigned char* digest, const char* user,
const char* realm, const char* password);
int digest_parse(const char* header, ha_buffer_t* buf, digest_header_t* dg);
const char* digest_challenge(ha_buffer_t* buf, const char* nonce_str,
const char* realm, const char* domains, int stale);
/*
* Validate digest headers once they've been parsed. Note that it's up
* to the caller to validate the 'username' and 'nonce' fields.
*/
int digest_check(digest_context_t* dg, const ha_context_t* opts, ha_buffer_t* buf);
int digest_pre_check(digest_context_t* dg, const ha_context_t* opts, ha_buffer_t* buf);
/* This assumes a digest_context that's been prechecked successfully */
int digest_complete_check(digest_context_t* dg, ha_buffer_t* buf);
/* This assumes a digest_context that's been checked and validated successfully */
const char* digest_respond(digest_context_t* dg, ha_buffer_t* buf, unsigned char* next);
#endif /* __DIGEST_H__ */
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