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be853f563a
Fixes #2518 Signed-off-by: Christian Decker <decker.christian@gmail.com> Changelog-fixed: `minconf` no longer gets wrapped around for large values, which was causing funds with insufficient confirmations to be selected.
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
#ifndef LIGHTNING_COMMON_WALLET_TX_H
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#define LIGHTNING_COMMON_WALLET_TX_H
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#include "config.h"
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#include <ccan/short_types/short_types.h>
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#include <common/amount.h>
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#include <lightningd/json.h>
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#include <lightningd/jsonrpc.h>
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#include <lightningd/lightningd.h>
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/* A specification of funds in the wallet used for funding channels and
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* withdrawal.
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*/
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struct wallet_tx {
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struct command *cmd;
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struct amount_sat amount, change;
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u32 change_key_index;
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const struct utxo **utxos;
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bool all_funds; /* In this case, amount is a maximum. */
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};
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void wtx_init(struct command *cmd, struct wallet_tx *wtx, struct amount_sat max);
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struct command_result *param_wtx(struct command *cmd,
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const char *name,
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const char *buffer,
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const jsmntok_t *tok,
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struct wallet_tx *wtx);
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struct command_result *wtx_select_utxos(struct wallet_tx *tx,
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u32 fee_rate_per_kw,
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size_t out_len,
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u32 maxheight);
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static inline u32 minconf_to_maxheight(u32 minconf, struct lightningd *ld)
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{
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/* No confirmations is special, we need to disable the check in the
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* selection */
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if (minconf == 0)
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return 0;
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/* Avoid wrapping around and suddenly allowing any confirmed
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* outputs. Since we can't have a coinbase output, and 0 is taken for
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* the disable case, we can just clamp to 1. */
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if (minconf >= ld->topology->tip->height)
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return 1;
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return ld->topology->tip->height - minconf + 1;
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}
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#endif /* LIGHTNING_COMMON_WALLET_TX_H */
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