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lightningd: check closing tx signature

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This commit is contained in:
Nalin Bhardwaj
2021-05-29 14:25:13 +05:30
committed by Rusty Russell
parent a027b3a80c
commit 57935b20d6
1 changed files with 14 additions and 2 deletions
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16
lightningd/closing_control.c
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@@ -97,15 +97,27 @@ static void peer_received_closing_signature(struct channel *channel,
struct bitcoin_tx *tx;
struct bitcoin_txid tx_id;
struct lightningd *ld = channel->peer->ld;
u8 *funding_wscript;
if (!fromwire_closingd_received_signature(msg, msg, &sig, &tx)) {
channel_internal_error(channel, "Bad closing_received_signature %s",
channel_internal_error(channel,
"Bad closing_received_signature %s",
tal_hex(msg, msg));
return;
}
tx->chainparams = chainparams;
/* FIXME: Make sure signature is correct! */
funding_wscript = bitcoin_redeem_2of2(tmpctx,
&channel->local_funding_pubkey,
&channel->channel_info.remote_fundingkey);
if (!check_tx_sig(tx, 0, NULL, funding_wscript,
&channel->channel_info.remote_fundingkey, &sig)) {
channel_internal_error(channel,
"Bad closing_received_signature %s",
tal_hex(msg, msg));
return;
}
if (closing_fee_is_acceptable(ld, channel, tx)) {
channel_set_last_tx(channel, tx, &sig, TX_CHANNEL_CLOSE);
wallet_channel_save(ld->wallet, channel);