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e81d78ec4c
Needed for v2 of channel opens, where the minimum weight is 110; a 'simple utxo' (sig + key) weighs in at 107, so we a need a way to establish a floor for this case. Changelog-Added: JSON-RPC: fundpsbt/utxopsbt have new param, `min_witness_utxo`, which sets a floor for the weight calculation of an added input
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
#ifndef LIGHTNING_COMMON_UTXO_H
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#define LIGHTNING_COMMON_UTXO_H
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#include "config.h"
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#include <bitcoin/chainparams.h>
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#include <bitcoin/pubkey.h>
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#include <bitcoin/shadouble.h>
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#include <bitcoin/tx.h>
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#include <ccan/short_types/short_types.h>
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#include <ccan/tal/tal.h>
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#include <common/amount.h>
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#include <common/node_id.h>
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#include <stdbool.h>
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struct ext_key;
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/* Information needed for their_unilateral/to-us outputs */
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struct unilateral_close_info {
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u64 channel_id;
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struct node_id peer_id;
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bool option_anchor_outputs;
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/* NULL if this is an option_static_remotekey commitment */
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struct pubkey *commitment_point;
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};
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/* Possible states for tracked outputs in the database. Not sure yet
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* whether we really want to have reservations reflected in the
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* database, it would simplify queries at the cost of some IO ops */
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/* /!\ This is a DB ENUM, please do not change the numbering of any
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* already defined elements (adding is ok) /!\ */
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enum output_status {
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OUTPUT_STATE_AVAILABLE = 0,
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OUTPUT_STATE_RESERVED = 1,
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OUTPUT_STATE_SPENT = 2,
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/* Special status used to express that we don't care in
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* queries */
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OUTPUT_STATE_ANY = 255
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};
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struct utxo {
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struct bitcoin_txid txid;
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u32 outnum;
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struct amount_sat amount;
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u32 keyindex;
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bool is_p2sh;
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enum output_status status;
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/* Optional unilateral close information, NULL if this is just
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* a HD key */
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struct unilateral_close_info *close_info;
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/* NULL if we haven't seen it in a block, otherwise the block it's in */
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const u32 *blockheight;
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/* NULL if not spent yet, otherwise, the block the spending transaction is in */
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const u32 *spendheight;
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/* Block this utxo becomes unreserved, if applicable */
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u32 reserved_til;
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/* The scriptPubkey if it is known */
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u8 *scriptPubkey;
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};
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/* We lazy-evaluate whether a utxo is really still reserved. */
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static inline bool utxo_is_reserved(const struct utxo *utxo, u32 current_height)
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{
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if (utxo->status != OUTPUT_STATE_RESERVED)
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return false;
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return utxo->reserved_til > current_height;
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}
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void towire_utxo(u8 **pptr, const struct utxo *utxo);
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struct utxo *fromwire_utxo(const tal_t *ctx, const u8 **ptr, size_t *max);
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/* Estimate of (signed) UTXO weight in transaction */
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size_t utxo_spend_weight(const struct utxo *utxo, size_t min_witness_weight);
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#endif /* LIGHTNING_COMMON_UTXO_H */
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