Pkt *accept_pkt_commit(struct peer *peer, const Pkt *pkt)
{
const UpdateCommit *c = pkt->update_commit;
Pkt *err;
struct commit_info *ci = new_commit_info(peer);
/* Create new commit info for this commit tx. */
ci->prev = peer->local.commit;
ci->commit_num = ci->prev->commit_num + 1;
ci->revocation_hash = peer->local.next_revocation_hash;
/* BOLT #2:
*
* A receiving node MUST apply all local acked and unacked
* changes except unacked fee changes to the local commitment
*/
/* (We already applied them to staging_cstate as we went) */
ci->cstate = copy_cstate(ci, peer->local.staging_cstate);
ci->tx = create_commit_tx(ci, peer->dstate->secpctx,
&peer->local.finalkey,
&peer->remote.finalkey,
&peer->local.locktime,
&peer->remote.locktime,
&peer->anchor.txid,
peer->anchor.index,
peer->anchor.satoshis,
&ci->revocation_hash,
ci->cstate,
OURS,
&ci->map);
/* BOLT #2:
*
* A node MUST NOT send an `update_commit` message which does
* not include any updates.
*/
if (ci->prev->cstate->changes == ci->cstate->changes)
return pkt_err(peer, "Empty commit");
err = check_and_save_commit_sig(peer, ci, c->sig);
if (err)
return err;
/* Switch to the new commitment. */
peer->local.commit = ci;
peer_get_revocation_hash(peer, ci->commit_num + 1,
&peer->local.next_revocation_hash);
return NULL;
}
Pkt *accept_pkt_anchor(struct peer *peer, const Pkt *pkt)
{
const OpenAnchor *a = pkt->open_anchor;
/* They must be offering anchor for us to try accepting */
assert(peer->us.offer_anchor == CMD_OPEN_WITHOUT_ANCHOR);
assert(peer->them.offer_anchor == CMD_OPEN_WITH_ANCHOR);
proto_to_sha256(a->txid, &peer->anchor.txid.sha);
peer->anchor.index = a->output_index;
peer->anchor.satoshis = a->amount;
if (!setup_first_commit(peer))
return pkt_err(peer, "Insufficient funds for fee");
return check_and_save_commit_sig(peer, peer->us.commit, a->commit_sig);
}
Pkt *accept_pkt_commit(struct peer *peer, const Pkt *pkt)
{
const UpdateCommit *c = pkt->update_commit;
Pkt *err;
struct commit_info *ci = talz(peer, struct commit_info);
/* Create new commit info for this commit tx. */
ci->prev = peer->us.commit;
ci->revocation_hash = peer->us.next_revocation_hash;
ci->cstate = copy_funding(ci, peer->us.staging_cstate);
ci->tx = create_commit_tx(ci,
&peer->us.finalkey,
&peer->them.finalkey,
&peer->them.locktime,
&peer->anchor.txid,
peer->anchor.index,
peer->anchor.satoshis,
&ci->revocation_hash,
ci->cstate);
/* BOLT #2:
*
* A node MUST NOT send an `update_commit` message which does
* not include any updates.
*/
if (ci->prev->cstate->changes == ci->cstate->changes)
return pkt_err(peer, "Empty commit");
err = check_and_save_commit_sig(peer, ci, c->sig);
if (err)
return err;
/* Switch to the new commitment. */
peer->us.commit = ci;
peer->commit_tx_counter++;
peer_get_revocation_hash(peer, peer->commit_tx_counter + 1,
&peer->us.next_revocation_hash);
return NULL;
}
Pkt *accept_pkt_open_commit_sig(struct peer *peer, const Pkt *pkt)
{
const OpenCommitSig *s = pkt->open_commit_sig;
return check_and_save_commit_sig(peer, peer->local.commit, s->sig);
}
