Function get_node_announcement

gossipd/gossipd.c:135–185

~ We don't actually keep node_announcements in memory; we keep them in * a file called `gossip_store`. If we need some node details, we reload * and reparse. It's slow, but generally rare. */

 * a file called `gossip_store`.  If we need some node details, we reload
 * and reparse.  It's slow, but generally rare. */
static bool get_node_announcement(const tal_t *ctx,
				  struct daemon *daemon,
				  const struct node *n,
				  u8 rgb_color[3],
				  u8 alias[32],
				  u8 **features,
				  struct wireaddr **wireaddrs,
				  struct lease_rates **rates)
{
	const u8 *msg;
	struct node_id id;
	secp256k1_ecdsa_signature signature;
	u32 timestamp;
	u8 *addresses;
	struct tlv_node_ann_tlvs *na_tlvs;

	if (!n->bcast.index)
		return false;

	msg = gossip_store_get(tmpctx, daemon->rstate->gs, n->bcast.index);

	/* Note: validity of node_id is already checked. */
	if (!fromwire_node_announcement(ctx, msg,
					&signature, features,
					&timestamp,
					&id, rgb_color, alias,
					&addresses,
					&na_tlvs)) {
		status_broken("Bad local node_announcement @%u: %s",
			      n->bcast.index, tal_hex(tmpctx, msg));
		return false;
	}

	if (!node_id_eq(&id, &n->id) || timestamp != n->bcast.timestamp) {
		status_broken("Wrong node_announcement @%u:"
			      " expected %s timestamp %u "
			      " got %s timestamp %u",
			      n->bcast.index,
			      type_to_string(tmpctx, struct node_id, &n->id),
			      timestamp,
			      type_to_string(tmpctx, struct node_id, &id),
			      n->bcast.timestamp);
		return false;
	}

	*wireaddrs = fromwire_wireaddr_array(ctx, addresses);
	*rates = tal_steal(ctx, na_tlvs->option_will_fund);

	tal_free(addresses);
	return true;
}

/* Version which also does nodeid lookup */
static bool get_node_announcement_by_id(const tal_t *ctx,