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#ifndef LIGHTNING_COMMON_UTXO_H
#define LIGHTNING_COMMON_UTXO_H
#include "config.h"
#include <bitcoin/chainparams.h>
#include <bitcoin/pubkey.h>
#include <bitcoin/shadouble.h>
#include <bitcoin/tx.h>
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
#include <common/amount.h>
#include <common/node_id.h>
#include <stdbool.h>
struct ext_key;
/* Information needed for their_unilateral/to-us outputs */
struct unilateral_close_info {
u64 channel_id;
struct node_id peer_id;
bool option_anchor_outputs;
/* NULL if this is an option_static_remotekey commitment */
struct pubkey *commitment_point;
};
/* Possible states for tracked outputs in the database. Not sure yet
* whether we really want to have reservations reflected in the
* database, it would simplify queries at the cost of some IO ops */
/* /!\ This is a DB ENUM, please do not change the numbering of any
* already defined elements (adding is ok) /!\ */
enum output_status {
OUTPUT_STATE_AVAILABLE = 0,
OUTPUT_STATE_RESERVED = 1,
OUTPUT_STATE_SPENT = 2,
/* Special status used to express that we don't care in
* queries */
OUTPUT_STATE_ANY = 255
};
struct utxo {
struct bitcoin_txid txid;
u32 outnum;
struct amount_sat amount;
u32 keyindex;
bool is_p2sh;
enum output_status status;
/* Optional unilateral close information, NULL if this is just
* a HD key */
struct unilateral_close_info *close_info;
/* NULL if we haven't seen it in a block, otherwise the block it's in */
const u32 *blockheight;
/* NULL if not spent yet, otherwise, the block the spending transaction is in */
const u32 *spendheight;
/* Block this utxo becomes unreserved, if applicable */
u32 reserved_til;
/* The scriptPubkey if it is known */
u8 *scriptPubkey;
};
/* We lazy-evaluate whether a utxo is really still reserved. */
static inline bool utxo_is_reserved(const struct utxo *utxo, u32 current_height)
{
if (utxo->status != OUTPUT_STATE_RESERVED)
return false;
return utxo->reserved_til > current_height;
}
void towire_utxo(u8 **pptr, const struct utxo *utxo);
struct utxo *fromwire_utxo(const tal_t *ctx, const u8 **ptr, size_t *max);
/* Estimate of (signed) UTXO weight in transaction */
size_t utxo_spend_weight(const struct utxo *utxo, size_t min_witness_weight);
#endif /* LIGHTNING_COMMON_UTXO_H */