Function validate_initial_commitment_signature

openingd/common.c:239–265

void validate_initial_commitment_signature(int hsm_fd,
					   struct bitcoin_tx *tx,
					   struct bitcoin_signature *sig)
{
	u32 feerate;
	u64 commit_num;
	const u8 *msg;
	struct secret *old_secret;
	struct pubkey next_point;

	/* Validate the counterparty's signature. */
	feerate = 0; /* unused since there are no htlcs */
	commit_num = 0;
	msg = towire_hsmd_validate_commitment_tx(NULL,
						 tx,
						 NULL, /* No htlcs */
						 commit_num,
						 feerate,
						 sig,
						 NULL /* No htlc_sigs */);
	wire_sync_write(hsm_fd, take(msg));
	msg = wire_sync_read(tmpctx, hsm_fd);
	if (!fromwire_hsmd_validate_commitment_tx_reply(tmpctx, msg, &old_secret, &next_point))
		status_failed(STATUS_FAIL_HSM_IO,
			      "Reading validate_commitment_tx reply: %s",
			      tal_hex(tmpctx, msg));
}