50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
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#ifndef LIGHTNING_DAEMON_HTLC_H
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#define LIGHTNING_DAEMON_HTLC_H
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#include "config.h"
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#include "bitcoin/locktime.h"
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#include "pseudorand.h"
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#include <ccan/crypto/sha256/sha256.h>
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#include <ccan/crypto/siphash24/siphash24.h>
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#include <ccan/htable/htable_type.h>
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#include <ccan/short_types/short_types.h>
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struct htlc {
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/* Useful for debugging, and decoding via ->src. */
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struct peer *peer;
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/* The unique ID for this peer and this direction (ours or theirs) */
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u64 id;
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/* The amount in millisatoshi. */
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u64 msatoshis;
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/* When the HTLC can no longer be redeemed. */
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struct abs_locktime expiry;
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/* The hash of the preimage which can redeem this HTLC */
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struct sha256 rhash;
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/* FIXME: We could union these together: */
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/* Routing information sent with this HTLC. */
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const u8 *routing;
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/* Previous HTLC (if any) which made us offer this (OURS only) */
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struct htlc *src;
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};
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/* htlc_map: ID -> htlc mapping. */
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static inline u64 htlc_key(const struct htlc *h)
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{
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return h->id;
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}
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static inline bool htlc_cmp(const struct htlc *h, u64 id)
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{
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return h->id == id;
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}
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static inline size_t htlc_hash(u64 id)
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{
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return siphash24(siphash_seed(), &id, sizeof(id));
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}
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HTABLE_DEFINE_TYPE(struct htlc, htlc_key, htlc_hash, htlc_cmp, htlc_map);
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static inline size_t htlc_map_count(const struct htlc_map *htlcs)
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{
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return htlcs->raw.elems;
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}
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#endif /* LIGHTNING_DAEMON_HTLC_H */
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