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wallet: Hook into the hsm_funding_sig to extract change outputs

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This is the step where we broadcast the transaction to the network and
a nice place to extract the change from the transaction.

Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker
2017-09-01 14:40:52 +02:00
committed by Rusty Russell
parent d14c9d30cd
commit fa13190595
2 changed files with 23 additions and 0 deletions
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4
lightningd/peer_control.c
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@@ -1378,6 +1378,7 @@ static void opening_got_hsm_funding_sig(struct funding_channel *fc,
{
secp256k1_ecdsa_signature *sigs;
struct bitcoin_tx *tx = fc->funding_tx;
u64 change_satoshi;
size_t i;
if (!fromwire_hsmctl_sign_funding_reply(fc, resp, NULL, &sigs))
@@ -1407,6 +1408,9 @@ static void opening_got_hsm_funding_sig(struct funding_channel *fc,
watch_tx(fc->peer, fc->peer->ld->topology, fc->peer, tx,
funding_lockin_cb, NULL);
/* Extract the change output and add it to the DB */
wallet_extract_owned_outputs(fc->peer->ld->wallet, tx, &change_satoshi);
/* FIXME: Remove arg from cb? */
watch_txo(fc->peer, fc->peer->ld->topology, fc->peer,
fc->peer->funding_txid, fc->peer->funding_outnum,