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#ifndef LIGHTNING_LIGHTNINGD_HTLC_END_H
#define LIGHTNING_LIGHTNINGD_HTLC_END_H
#include "config.h"
#include <ccan/htable/htable_type.h>
#include <ccan/short_types/short_types.h>
#include <common/htlc_state.h>
#include <common/sphinx.h>
#include <wire/gen_onion_wire.h>
/* We look up HTLCs by peer & id */
struct htlc_key {
struct peer *peer;
u64 id;
};
/* Incoming HTLC */
struct htlc_in {
/* The database primary key for this htlc. Must be 0 until it
* is saved to the database, must be >0 after saving to the
* database. */
u64 dbid;
struct htlc_key key;
u64 msatoshi;
u32 cltv_expiry;
struct sha256 payment_hash;
enum htlc_state hstate;
/* Onion information */
u8 onion_routing_packet[TOTAL_PACKET_SIZE];
/* Shared secret for us to send any failure message. */
struct secret shared_secret;
/* If we failed HTLC, here's the message. */
const u8 *failuremsg;
/* If it was malformed, here's the error. */
enum onion_type malformed;
/* If they fulfilled, here's the preimage. */
struct preimage *preimage;
};
struct htlc_out {
/* The database primary key for this htlc. Must be 0 until it
* is saved to the database, must be >0 after saving to the
* database. */
u64 dbid;
u64 origin_htlc_id;
struct htlc_key key;
u64 msatoshi;
u32 cltv_expiry;
struct sha256 payment_hash;
enum htlc_state hstate;
/* Onion information */
u8 onion_routing_packet[TOTAL_PACKET_SIZE];
/* If we failed HTLC, here's the message. */
const u8 *failuremsg;
/* If it was malformed, here's the error. */
enum onion_type malformed;
/* If we fulfilled, here's the preimage. */
struct preimage *preimage;
/* Where it's from, if not going to us. */
struct htlc_in *in;
/* Otherwise, payment command which created it. */
struct pay_command *pay_command;
};
static inline const struct htlc_key *keyof_htlc_in(const struct htlc_in *in)
{
return &in->key;
}
static inline const struct htlc_key *keyof_htlc_out(const struct htlc_out *out)
{
return &out->key;
}
size_t hash_htlc_key(const struct htlc_key *htlc_key);
static inline bool htlc_in_eq(const struct htlc_in *in, const struct htlc_key *k)
{
return in->key.peer == k->peer && in->key.id == k->id;
}
static inline bool htlc_out_eq(const struct htlc_out *out,
const struct htlc_key *k)
{
return out->key.peer == k->peer && out->key.id == k->id;
}
HTABLE_DEFINE_TYPE(struct htlc_in, keyof_htlc_in, hash_htlc_key, htlc_in_eq,
htlc_in_map);
HTABLE_DEFINE_TYPE(struct htlc_out, keyof_htlc_out, hash_htlc_key, htlc_out_eq,
htlc_out_map);
struct htlc_in *find_htlc_in(const struct htlc_in_map *map,
const struct peer *peer,
u64 htlc_id);
struct htlc_out *find_htlc_out(const struct htlc_out_map *map,
const struct peer *peer,
u64 htlc_id);
/* You still need to connect_htlc_in this! */
struct htlc_in *new_htlc_in(const tal_t *ctx,
struct peer *peer, u64 id,
u64 msatoshi, u32 cltv_expiry,
const struct sha256 *payment_hash,
const struct secret *shared_secret,
const u8 *onion_routing_packet);
/* You need to set the ID, then connect_htlc_out this! */
struct htlc_out *new_htlc_out(const tal_t *ctx,
struct peer *peer,
u64 msatoshi, u32 cltv_expiry,
const struct sha256 *payment_hash,
const u8 *onion_routing_packet,
struct htlc_in *in,
struct pay_command *pc);
void connect_htlc_in(struct htlc_in_map *map, struct htlc_in *hin);
void connect_htlc_out(struct htlc_out_map *map, struct htlc_out *hout);
struct htlc_out *htlc_out_check(const struct htlc_out *hout,
const char *abortstr);
struct htlc_in *htlc_in_check(const struct htlc_in *hin, const char *abortstr);
#endif /* LIGHTNING_LIGHTNINGD_HTLC_END_H */