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/*
* key.h
*
* key usage limits enforcement
*
* David A. Mcgrew
* Cisco Systems, Inc.
*/
/*
*
* Copyright (c) 2001-2006 Cisco Systems, 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:
*
* 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.
*
* Neither the name of the Cisco Systems, Inc. nor the names of its
* contributors may 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 HOLDERS 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.
*
*/
#ifndef KEY_H
#define KEY_H
#include "rdbx.h" /* for xtd_seq_num_t */
#include "err.h"
typedef struct key_limit_ctx_t *key_limit_t;
typedef enum {
key_event_normal,
key_event_soft_limit,
key_event_hard_limit
} key_event_t;
err_status_t
key_limit_set(key_limit_t key, const xtd_seq_num_t s);
err_status_t
key_limit_clone(key_limit_t original, key_limit_t *new_key);
err_status_t
key_limit_check(const key_limit_t key);
key_event_t
key_limit_update(key_limit_t key);
typedef enum {
key_state_normal,
key_state_past_soft_limit,
key_state_expired
} key_state_t;
typedef struct key_limit_ctx_t {
xtd_seq_num_t num_left;
key_state_t state;
} key_limit_ctx_t;
#endif /* KEY_H */
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