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67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/* Copyright (c) 2012-2013, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* \file replaycache.h
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* \brief Header file for replaycache.c.
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**/
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#ifndef TOR_REPLAYCACHE_H
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#define TOR_REPLAYCACHE_H
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typedef struct replaycache_s replaycache_t;
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#ifdef REPLAYCACHE_PRIVATE
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struct replaycache_s {
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/* Scrub interval */
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time_t scrub_interval;
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/* Last scrubbed */
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time_t scrubbed;
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/*
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* Horizon
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* (don't return true on digests in the cache but older than this)
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*/
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time_t horizon;
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/*
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* Digest map: keys are digests, values are times the digest was last seen
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*/
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digestmap_t *digests_seen;
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};
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#endif /* REPLAYCACHE_PRIVATE */
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/* replaycache_t free/new */
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void replaycache_free(replaycache_t *r);
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replaycache_t * replaycache_new(time_t horizon, time_t interval);
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#ifdef REPLAYCACHE_PRIVATE
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/*
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* replaycache_t internal functions:
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*
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* These take the time to treat as the present as an argument for easy unit
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* testing. For everything else, use the wrappers below instead.
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*/
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STATIC int replaycache_add_and_test_internal(
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time_t present, replaycache_t *r, const void *data, size_t len,
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time_t *elapsed);
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STATIC void replaycache_scrub_if_needed_internal(
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time_t present, replaycache_t *r);
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#endif /* REPLAYCACHE_PRIVATE */
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/*
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* replaycache_t methods
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*/
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int replaycache_add_and_test(replaycache_t *r, const void *data, size_t len);
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int replaycache_add_test_and_elapsed(
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replaycache_t *r, const void *data, size_t len, time_t *elapsed);
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void replaycache_scrub_if_needed(replaycache_t *r);
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#endif
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