core-lightning/common/psbt_keypath.c
Greg Sanders 908f834d66 Update libwally to 0.8.8, support PSBTv2
Libwally update breaks compatibility, so
we do this in one large step.

Changelog-Changed: JSON-RPC: elements network PSET now only supports PSETv2.
Changelog-Added: JSON-RPC: PSBTv2 supported for fundchannel_complete, openchannel_update, reserveinputs, sendpsbt, signpsbt, withdraw and unreserveinputs parameter psbt, openchannel_init and openchannel_bump parameter initialpsbt, openchannel_signed parameter signed_psbt and utxopsbt parameter utxopsbt
2023-03-23 16:10:55 +10:30

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C

#include "config.h"
#include <bitcoin/tx.h>
#include <common/psbt_keypath.h>
#include <common/utils.h>
#include <wally_bip32.h>
#include <wally_psbt.h>
void psbt_set_keypath(u32 index, const struct ext_key *ext, struct wally_map *map_in) {
u8 fingerprint[BIP32_KEY_FINGERPRINT_LEN];
if (bip32_key_get_fingerprint(
(struct ext_key *) ext, fingerprint, sizeof(fingerprint)) != WALLY_OK)
abort();
u32 path[1];
path[0] = index;
if (wally_map_keypath_add(map_in,
ext->pub_key, sizeof(ext->pub_key),
fingerprint, sizeof(fingerprint),
path, 1) != WALLY_OK)
abort();
}
void psbt_add_keypath_to_last_output(struct bitcoin_tx *tx,
u32 key_index,
const struct ext_key *ext) {
size_t outndx = tx->psbt->num_outputs - 1;
struct wally_map *map_in = &tx->psbt->outputs[outndx].keypaths;
tal_wally_start();
psbt_set_keypath(key_index, ext, map_in);
tal_wally_end(tx->psbt);
}