routing: Cleaning up old hostname and port handling

The single string-based hostname and port has been retired in favor of
having multiple `struct ipaddr`s from the `node_announcement`. This
breaks the hostnames and ports from IRC, but I didn't bother to
backport ipaddr for it since it is only used in the legacy daemon.

daemon/irc_announce.c

@@ -177,9 +177,7 @@ static void handle_irc_node_announcement(
 	char **splits)
 {
 	struct pubkey *pk = talz(msg, struct pubkey);
-	char *hostname = tal_strdup(msg, splits[2]);
-	int port = atoi(splits[3]);
-	if (!pubkey_from_hexstr(splits[1], strlen(splits[1]), pk) || port < 1)
+	if (!pubkey_from_hexstr(splits[1], strlen(splits[1]), pk))
 		return;
 
 	if (!verify_signed_privmsg(istate, pk, msg)) {
@@ -191,7 +189,7 @@ static void handle_irc_node_announcement(
 			splits[1]);
 	}
 
-	struct node *node = add_node(istate->dstate->rstate, pk, hostname, port);
+	struct node *node = add_node(istate->dstate->rstate, pk);
 	if (splits[4] != NULL){
 		tal_free(node->alias);
 		node->alias = tal_hexdata(node, splits[4], strlen(splits[4]));
@@ -233,8 +231,7 @@ static void handle_irc_command(struct ircstate *istate, const struct irccommand
 		log_debug(dstate->base_log, "Detected my own IP as %s", dstate->external_ip);
 
 		// Add our node to the node_map for completeness
-		add_node(istate->dstate->rstate, &dstate->id,
-			 dstate->external_ip, dstate->portnum);
+		add_node(istate->dstate->rstate, &dstate->id);
 	} else if (streq(cmd->command, "JOIN")) {
 		unsigned int delay;
 

daemon/routing.c

@@ -74,9 +74,7 @@ struct node *new_node(struct routing_state *rstate,
 	n->id = *id;
 	n->in = tal_arr(n, struct node_connection *, 0);
 	n->out = tal_arr(n, struct node_connection *, 0);
-	n->port = 0;
 	n->alias = NULL;
-	n->hostname = NULL;
 	n->node_announcement = NULL;
 	n->last_timestamp = 0;
 	n->addresses = tal_arr(n, struct ipaddr, 0);
@@ -88,9 +86,7 @@ struct node *new_node(struct routing_state *rstate,
 
 struct node *add_node(
 	struct routing_state *rstate,
-	const struct pubkey *pk,
-	char *hostname,
-	int port)
+	const struct pubkey *pk)
 {
 	struct node *n = get_node(rstate, pk);
 	if (!n) {
@@ -101,8 +97,6 @@ struct node *add_node(
 		log_debug_struct(rstate->base_log, "Update existing node %s",
 				 struct pubkey, pk);
 	}
-	n->hostname = tal_steal(n, hostname);
-	n->port = port;
 	return n;
 }
 
@@ -916,13 +910,6 @@ void handle_node_announcement(
 	node->addresses = tal_steal(node, ipaddrs);
 
 	node->last_timestamp = timestamp;
-	node->hostname = tal_free(node->hostname);
-
-	if (!read_ip(node, addresses, &node->hostname, &node->port)) {
-		/* FIXME: SHOULD fail connection here. */
-		tal_free(serialized);
-		return;
-	}
 
 	memcpy(node->rgb_color, rgb_color, 3);
 

daemon/routing.h

@@ -46,8 +46,6 @@ struct node {
 
 	/* IP/Hostname and port of this node (may be NULL) */
 	struct ipaddr *addresses;
-	char *hostname;
-	int port;
 
 	u32 last_timestamp;
 
@@ -112,9 +110,7 @@ s64 connection_fee(const struct node_connection *c, u64 msatoshi);
 
 /* Updates existing node, or creates a new one as required. */
 struct node *add_node(struct routing_state *rstate,
-		      const struct pubkey *pk,
-		      char *hostname,
-		      int port);
+		      const struct pubkey *pk);
 
 /* Updates existing connection, or creates new one as required. */
 struct node_connection *add_connection(struct routing_state *rstate,

daemon/routingrpc.c

@@ -136,6 +136,7 @@ static void json_getnodes(struct command *cmd,
 	struct json_result *response = new_json_result(cmd);
 	struct node *n;
 	struct node_map_iter i;
+	size_t j;
 
 	n = node_map_first(cmd->dstate->rstate->nodes, &i);
 
@@ -145,12 +146,11 @@ static void json_getnodes(struct command *cmd,
 	while (n != NULL) {
 		json_object_start(response, NULL);
 		json_add_pubkey(response, "nodeid", &n->id);
-		json_add_num(response, "port", n->port);
-		if (!n->port)
-			json_add_null(response, "hostname");
-		else
-			json_add_string(response, "hostname", n->hostname);
-
+		json_array_start(response, "addresses");
+		for (j=0; j<tal_count(n->addresses); j++) {
+			json_add_address(response, NULL, &n->addresses[j]);
+		}
+		json_array_end(response);
 		json_object_end(response);
 		n = node_map_next(cmd->dstate->rstate->nodes, &i);
 	}

lightningd/gossip/gossip.c

@@ -570,8 +570,6 @@ static struct io_plan *getnodes(struct io_conn *conn, struct daemon *daemon)
 	while (n != NULL) {
 		tal_resize(&nodes, node_count + 1);
 		nodes[node_count].nodeid = n->id;
-		nodes[node_count].hostname = n->hostname;
-		nodes[node_count].port = n->port;
 		nodes[node_count].addresses = n->addresses;
 		node_count++;
 		n = node_map_next(daemon->rstate->nodes, &i);

lightningd/gossip_msg.c

@@ -3,7 +3,6 @@
 
 void fromwire_gossip_getnodes_entry(const tal_t *ctx, const u8 **pptr, size_t *max, struct gossip_getnodes_entry *entry)
 {
-	u8 hostnamelen;
 	u8 numaddresses, i;
 	fromwire_pubkey(pptr, max, &entry->nodeid);
 	numaddresses = fromwire_u8(pptr, max);
@@ -12,15 +11,9 @@ void fromwire_gossip_getnodes_entry(const tal_t *ctx, const u8 **pptr, size_t *m
 	for (i=0; i<numaddresses; i++) {
 		fromwire_ipaddr(pptr, max, entry->addresses);
 	}
-
-	hostnamelen = fromwire_u8(pptr, max);
-	entry->hostname = tal_arr(ctx, char, hostnamelen);
-	fromwire_u8_array(pptr, max, (u8*)entry->hostname, hostnamelen);
-	entry->port = fromwire_u16(pptr, max);
 }
 void towire_gossip_getnodes_entry(u8 **pptr, const struct gossip_getnodes_entry *entry)
 {
-	u8 hostnamelen;
 	u8 i, numaddresses = tal_count(entry->addresses);
 	towire_pubkey(pptr, &entry->nodeid);
 	towire_u8(pptr, numaddresses);
@@ -28,17 +21,6 @@ void towire_gossip_getnodes_entry(u8 **pptr, const struct gossip_getnodes_entry
 	for (i=0; i<numaddresses; i++) {
 		towire_ipaddr(pptr, &entry->addresses[i]);
 	}
-
-	if (entry->hostname) {
-		hostnamelen = strlen(entry->hostname);
-		towire_u8(pptr, hostnamelen);
-		towire_u8_array(pptr, (u8*)entry->hostname, hostnamelen);
-	}else {
-		/* If we don't have a hostname just write an empty string */
-		hostnamelen = 0;
-		towire_u8(pptr, hostnamelen);
-	}
-	towire_u16(pptr, entry->port);
 }
 
 void fromwire_route_hop(const u8 **pptr, size_t *max, struct route_hop *entry)

lightningd/gossip_msg.h

@@ -7,8 +7,6 @@
 struct gossip_getnodes_entry {
 	struct pubkey nodeid;
 	struct ipaddr *addresses;
-	char *hostname;
-	u16 port;
 };
 
 struct gossip_getchannels_entry {