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#ifndef LIGHTNING_LIGHTNINGD_CHANNEL_CHANNELD_HTLC_H
#define LIGHTNING_LIGHTNINGD_CHANNEL_CHANNELD_HTLC_H
#include "config.h"
#include <bitcoin/locktime.h>
#include <ccan/short_types/short_types.h>
#include <common/htlc.h>
#include <common/pseudorand.h>
#include <wire/gen_onion_wire.h>
struct htlc {
/* What's the status. */
enum htlc_state state;
/* The unique ID for this peer and this direction (LOCAL or REMOTE) */
u64 id;
/* The amount in millisatoshi. */
u64 msatoshi;
/* When the HTLC can no longer be redeemed. */
struct abs_locktime expiry;
/* The hash of the preimage which can redeem this HTLC */
struct sha256 rhash;
/* The preimage which hashes to rhash (if known) */
struct preimage *r;
/* The routing shared secret (only for incoming) */
struct secret *shared_secret;
/* FIXME: We could union these together: */
/* Routing information sent with this HTLC. */
const u8 *routing;
const u8 *fail;
enum onion_type malformed;
};
static inline bool htlc_has(const struct htlc *h, int flag)
{
return htlc_state_flags(h->state) & flag;
}
static inline enum side htlc_owner(const struct htlc *h)
{
return htlc_state_owner(h->state);
}
/* htlc_map: ID -> htlc mapping. */
static inline u64 htlc_key(const struct htlc *h)
{
return h->id;
}
static inline bool htlc_cmp(const struct htlc *h, u64 id)
{
return h->id == id;
}
static inline size_t htlc_hash(u64 id)
{
return siphash24(siphash_seed(), &id, sizeof(id));
}
HTABLE_DEFINE_TYPE(struct htlc, htlc_key, htlc_hash, htlc_cmp, htlc_map);
static inline struct htlc *htlc_get(struct htlc_map *htlcs, u64 id, enum side owner)
{
struct htlc *h;
struct htlc_map_iter it;
for (h = htlc_map_getfirst(htlcs, id, &it);
h;
h = htlc_map_getnext(htlcs, id, &it)) {
if (h->id == id && htlc_has(h, HTLC_FLAG(owner,HTLC_F_OWNER)))
return h;
}
return NULL;
}
static inline size_t htlc_map_count(const struct htlc_map *htlcs)
{
return htlcs->raw.elems;
}
/* FIXME: Move these out of the hash! */
static inline bool htlc_is_dead(const struct htlc *htlc)
{
return htlc->state == RCVD_REMOVE_ACK_REVOCATION
|| htlc->state == SENT_REMOVE_ACK_REVOCATION;
}
#endif /* LIGHTNING_LIGHTNINGD_CHANNEL_CHANNELD_HTLC_H */