Function receive_offer

closingd/closingd.c:240–405

Returns fee they offered. */

/* Returns fee they offered. */
static struct amount_sat
receive_offer(struct per_peer_state *pps,
	      const struct chainparams *chainparams,
	      const struct channel_id *channel_id,
	      const struct pubkey *funding_pubkey,
	      const u8 *funding_wscript,
	      u32 *local_wallet_index,
	      const struct ext_key *local_wallet_ext_key,
	      u8 *scriptpubkey[NUM_SIDES],
	      const struct bitcoin_outpoint *funding,
	      struct amount_sat funding_sats,
	      const struct amount_sat out[NUM_SIDES],
	      enum side opener,
	      struct amount_sat our_dust_limit,
	      struct amount_sat min_fee_to_accept,
	      const struct bitcoin_outpoint *wrong_funding,
	      struct bitcoin_txid *closing_txid,
	      struct tlv_closing_signed_tlvs_fee_range **tlv_fees)
{
	u8 *msg;
	struct channel_id their_channel_id;
	struct amount_sat received_fee;
	struct bitcoin_signature their_sig;
	struct bitcoin_tx *tx;
	struct tlv_closing_signed_tlvs *close_tlvs;

	/* Wait for them to say something interesting */
	do {
		msg = closing_read_peer_msg(tmpctx, pps);

		/* BOLT #2:
		 *
		 *  - upon reconnection:
		 *     - MUST ignore any redundant `channel_ready` it receives.
		 */
		/* This should only happen if we've made no commitments, but
		 * we don't have to check that: it's their problem. */
		if (fromwire_peektype(msg) == WIRE_CHANNEL_READY)
			msg = tal_free(msg);
		/* BOLT #2:
		 *     - if it has sent a previous `shutdown`:
		 *       - MUST retransmit `shutdown`.
		 */
		else if (fromwire_peektype(msg) == WIRE_SHUTDOWN)
			msg = tal_free(msg);
		/* We can get announcement signatures: too late! */
		else if (fromwire_peektype(msg) == WIRE_ANNOUNCEMENT_SIGNATURES)
			msg = tal_free(msg);
	} while (!msg);

	their_sig.sighash_type = SIGHASH_ALL;
	if (!fromwire_closing_signed(msg, msg, &their_channel_id,
				     &received_fee, &their_sig.s,
				     &close_tlvs))
		peer_failed_warn(pps, channel_id,
				 "Expected closing_signed: %s",
				 tal_hex(tmpctx, msg));