plugin: remove boutique features.

We now manipulate the global features directly.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

connectd/connect_wire.csv

@@ -17,8 +17,6 @@ msgdata,connectctl_init,dev_allow_localhost,bool,
 msgdata,connectctl_init,use_dns,bool,
 msgdata,connectctl_init,tor_password,wirestring,
 msgdata,connectctl_init,use_v3_autotor,bool,
-msgdata,connectctl_init,init_featurebits_len,u16,
-msgdata,connectctl_init,init_featurebits,u8,init_featurebits_len
 
 # Connectd->master, here are the addresses I bound, can announce.
 msgtype,connectctl_init_reply,2100

connectd/connectd.c

@@ -154,9 +154,6 @@ struct daemon {
 
 	/* Allow to define the default behavior of tor services calls*/
 	bool use_v3_autotor;
-
-	/* featurebits that we support internally, and via plugins */
-	u8 *init_featurebits;
 };
 
 /* Peers we're trying to reach: we iterate through addrs until we succeed
@@ -475,8 +472,7 @@ static struct io_plan *handshake_in_success(struct io_conn *conn,
 	struct node_id id;
 	node_id_from_pubkey(&id, id_key);
 	status_peer_debug(&id, "Connect IN");
-	return peer_exchange_initmsg(conn, daemon, cs, &id, addr,
-				     daemon->init_featurebits);
+	return peer_exchange_initmsg(conn, daemon, cs, &id, addr);
 }
 
 /*~ When we get a connection in we set up its network address then call
@@ -536,8 +532,7 @@ static struct io_plan *handshake_out_success(struct io_conn *conn,
 	node_id_from_pubkey(&id, key);
 	connect->connstate = "Exchanging init messages";
 	status_peer_debug(&id, "Connect OUT");
-	return peer_exchange_initmsg(conn, connect->daemon, cs, &id, addr,
-				     connect->daemon->init_featurebits);
+	return peer_exchange_initmsg(conn, connect->daemon, cs, &id, addr);
 }
 
 struct io_plan *connection_out(struct io_conn *conn, struct connecting *connect)
@@ -1202,7 +1197,7 @@ static struct io_plan *connect_init(struct io_conn *conn,
 		&proxyaddr, &daemon->use_proxy_always,
 		&daemon->dev_allow_localhost, &daemon->use_dns,
 		&tor_password,
-		&daemon->use_v3_autotor, &daemon->init_featurebits)) {
+		&daemon->use_v3_autotor)) {
 		/* This is a helper which prints the type expected and the actual
 		 * message, then exits (it should never be called!). */
 		master_badmsg(WIRE_CONNECTCTL_INIT, msg);

connectd/peer_exchange_initmsg.c

@@ -155,8 +155,7 @@ struct io_plan *peer_exchange_initmsg(struct io_conn *conn,
 				      struct daemon *daemon,
 				      const struct crypto_state *cs,
 				      const struct node_id *id,
-				      const struct wireaddr_internal *addr,
-				      const u8 *init_featurebits)
+				      const struct wireaddr_internal *addr)
 {
 	/* If conn is closed, forget peer */
 	struct peer *peer = tal(conn, struct peer);
@@ -201,7 +200,7 @@ struct io_plan *peer_exchange_initmsg(struct io_conn *conn,
 	 * from now on they'll all go in initfeatures. */
 	peer->msg = towire_init(NULL,
 				get_offered_globalinitfeatures(tmpctx),
-				init_featurebits,
+				get_offered_initfeatures(tmpctx),
 				tlvs);
 	status_peer_io(LOG_IO_OUT, &peer->id, peer->msg);
 	peer->msg = cryptomsg_encrypt_msg(peer, &peer->cs, take(peer->msg));

connectd/peer_exchange_initmsg.h

@@ -14,7 +14,6 @@ struct io_plan *peer_exchange_initmsg(struct io_conn *conn,
 				      struct daemon *daemon,
 				      const struct crypto_state *cs,
 				      const struct node_id *id,
-				      const struct wireaddr_internal *addr,
-				      const u8 *init_featurebits);
+				      const struct wireaddr_internal *addr);
 
 #endif /* LIGHTNING_CONNECTD_PEER_EXCHANGE_INITMSG_H */

gossipd/gossip_generation.c

@@ -1,6 +1,7 @@
 /* Routines to make our own gossip messages.  Not as in "we're the gossip
  * generation, man!" */
 #include <ccan/mem/mem.h>
+#include <common/features.h>
 #include <common/memleak.h>
 #include <common/status.h>
 #include <common/timeout.h>
@@ -37,7 +38,8 @@ static u8 *create_node_announcement(const tal_t *ctx, struct daemon *daemon,
 		towire_wireaddr(&addresses, &daemon->announcable[i]);
 
 	announcement =
-	    towire_node_announcement(ctx, sig, daemon->nodefeatures, timestamp,
+	    towire_node_announcement(ctx, sig, get_offered_nodefeatures(tmpctx),
+				     timestamp,
 				     &daemon->id, daemon->rgb, daemon->alias,
 				     addresses);
 	return announcement;

gossipd/gossip_wire.csv

@@ -8,8 +8,6 @@ msgtype,gossipctl_init,3000
 msgdata,gossipctl_init,chainparams,chainparams,
 msgdata,gossipctl_init,feature_set,feature_set,
 msgdata,gossipctl_init,id,node_id,
-msgdata,gossipctl_init,gflen,u16,
-msgdata,gossipctl_init,globalfeatures,u8,gflen
 msgdata,gossipctl_init,rgb,u8,3
 msgdata,gossipctl_init,alias,u8,32
 msgdata,gossipctl_init,num_announcable,u16,

gossipd/gossipd.c

@@ -834,7 +834,6 @@ static struct io_plan *gossip_init(struct io_conn *conn,
 				     &chainparams,
 				     &feature_set,
 				     &daemon->id,
-				     &daemon->nodefeatures,
 				     daemon->rgb,
 				     daemon->alias,
 				     &daemon->announcable,

gossipd/gossipd.h

@@ -42,9 +42,6 @@ struct daemon {
 	/* Timers: we batch gossip, and also refresh announcements */
 	struct timers timers;
 
-	/* Features to list in node_announcement. */
-	u8 *nodefeatures;
-
 	/* Alias (not NUL terminated) and favorite color for node_announcement */
 	u8 alias[32];
 	u8 rgb[3];

lightningd/connect_control.c

@@ -337,7 +337,7 @@ static void connect_init_done(struct subd *connectd,
 int connectd_init(struct lightningd *ld)
 {
 	int fds[2];
-	u8 *msg, *init_features;
+	u8 *msg;
 	int hsmfd;
 	struct wireaddr_internal *wireaddrs = ld->proposed_wireaddr;
 	enum addr_listen_announce *listen_announce = ld->proposed_listen_announce;
@@ -362,12 +362,6 @@ int connectd_init(struct lightningd *ld)
 		*listen_announce = ADDR_LISTEN_AND_ANNOUNCE;
 	}
 
-	init_features =
-	    featurebits_or(tmpctx,
-			   take(plugins_collect_featurebits(
-			       tmpctx, ld->plugins, PLUGIN_FEATURES_INIT)),
-			   take(get_offered_initfeatures(tmpctx)));
-
 	msg = towire_connectctl_init(
 	    tmpctx, chainparams,
 	    ld->feature_set,
@@ -377,7 +371,7 @@ int connectd_init(struct lightningd *ld)
 	    ld->proxyaddr, ld->use_proxy_always || ld->pure_tor_setup,
 	    IFDEV(ld->dev_allow_localhost, false), ld->config.use_dns,
 	    ld->tor_service_password ? ld->tor_service_password : "",
-	    ld->config.use_v3_autotor, init_features);
+	    ld->config.use_v3_autotor);
 
 	subd_req(ld->connectd, ld->connectd, take(msg), -1, 0,
 		 connect_init_done, NULL);

lightningd/gossip_control.c

@@ -191,7 +191,7 @@ static void gossip_topology_synced(struct chain_topology *topo, void *unused)
  * message */
 void gossip_init(struct lightningd *ld, int connectd_fd)
 {
-	u8 *msg, *node_featurebits;
+	u8 *msg;
 	int hsmfd;
 
 	hsmfd = hsm_get_global_fd(ld, HSM_CAP_SIGN_GOSSIP);
@@ -206,17 +206,11 @@ void gossip_init(struct lightningd *ld, int connectd_fd)
 	topology_add_sync_waiter(ld->gossip, ld->topology,
 				 gossip_topology_synced, NULL);
 
-	node_featurebits =
-	    featurebits_or(tmpctx, take(get_offered_nodefeatures(tmpctx)),
-			   take(plugins_collect_featurebits(
-			       tmpctx, ld->plugins, PLUGIN_FEATURES_NODE)));
-
 	msg = towire_gossipctl_init(
 	    tmpctx,
 	    chainparams,
 	    ld->feature_set,
 	    &ld->id,
-	    node_featurebits,
 	    ld->rgb,
 	    ld->alias,
 	    ld->announcable,

lightningd/invoice.c

@@ -1013,14 +1013,7 @@ static struct command_result *json_invoice(struct command *cmd,
 	info->b11->description_hash = NULL;
 	info->b11->payment_secret = tal_dup(info->b11, struct secret,
 					    &payment_secret);
-
-	/* Which features should we announce to the node receiving this invoice?
-	 * This is a combination of natively supported features and featurebits
-	 * that plugins asked us to include in the invoice. */
-	info->b11->features = featurebits_or(
-	    info->b11, take(get_offered_bolt11features(NULL)),
-	    take(plugins_collect_featurebits(NULL, cmd->ld->plugins,
-					     PLUGIN_FEATURES_INVOICE)));
+	info->b11->features = get_offered_bolt11features(info->b11);
 
 #if DEVELOPER
 	info->b11->routes = unpack_routes(info->b11, buffer, routes);

lightningd/plugin.c

@@ -47,18 +47,6 @@ struct plugins *plugins_new(const tal_t *ctx, struct log_book *log_book,
 	return p;
 }
 
-u8 *plugins_collect_featurebits(const tal_t *ctx, const struct plugins *plugins,
-				enum plugin_features_type type)
-{
-	struct plugin *p;
-	u8 *res = tal_arr(ctx, u8, 0);
-	list_for_each(&plugins->plugins, p, list) {
-		if (p->featurebits[type])
-			res = featurebits_or(ctx, take(res), p->featurebits[type]);
-	}
-	return res;
-}
-
 static void destroy_plugin(struct plugin *p)
 {
 	plugin_hook_unregister_all(p);
@@ -82,9 +70,6 @@ struct plugin *plugin_register(struct plugins *plugins, const char* path TAKES)
 	p->plugins = plugins;
 	p->cmd = tal_strdup(p, path);
 
-	for (int i = 0; i < NUM_PLUGIN_FEATURES_TYPE; i++)
-		p->featurebits[i] = NULL;
-
 	p->plugin_state = UNCONFIGURED;
 	p->js_arr = tal_arr(p, struct json_stream *, 0);
 	p->used = 0;
@@ -868,12 +853,8 @@ static void plugin_manifest_timeout(struct plugin *plugin)
 	fatal("Can't recover from plugin failure, terminating.");
 }
 
-/* List of JSON keys matching `plugin_features_type`. */
-static const char *plugin_features_type_names[] = {"node", "init", "invoice", "channel"};
-static const size_t plugin_features_fset[] = {NODE_ANNOUNCE_FEATURE,
-					      INIT_FEATURE,
-					      BOLT11_FEATURE,
-					      CHANNEL_FEATURE};
+/* List of JSON keys matching `enum feature_place`. */
+static const char *plugin_feature_place_names[] = {"init", NULL, "node", "channel", "invoice"};
 
 bool plugin_parse_getmanifest_response(const char *buffer,
                                        const jsmntok_t *toks,
@@ -881,7 +862,6 @@ bool plugin_parse_getmanifest_response(const char *buffer,
                                        struct plugin *plugin)
 {
 	const jsmntok_t *resulttok, *dynamictok, *featurestok, *tok;
-	u8 *featurebits;
 
 	resulttok = json_get_member(buffer, toks, "result");
 	if (!resulttok || resulttok->type != JSMN_OBJECT)
@@ -899,21 +879,24 @@ bool plugin_parse_getmanifest_response(const char *buffer,
 		bool have_featurebits = false;
 		struct feature_set *fset = talz(tmpctx, struct feature_set);
 
-		for (int i = 0; i < NUM_PLUGIN_FEATURES_TYPE; i++) {
+		BUILD_ASSERT(ARRAY_SIZE(plugin_feature_place_names)
+			     == ARRAY_SIZE(fset->bits));
+
+		for (int i = 0; i < ARRAY_SIZE(fset->bits); i++) {
+			/* We don't allow setting the obs global init */
+			if (!plugin_feature_place_names[i])
+				continue;
+
 			tok = json_get_member(buffer, featurestok,
-					      plugin_features_type_names[i]);
+					      plugin_feature_place_names[i]);
 
 			if (!tok)
 				continue;
 
-			featurebits =
-			    json_tok_bin_from_hex(plugin, buffer, tok);
+			fset->bits[i] = json_tok_bin_from_hex(fset, buffer, tok);
+			have_featurebits |= tal_bytelen(fset->bits[i]) > 0;
 
-			have_featurebits |= tal_bytelen(featurebits) > 0;
-
-			if (featurebits) {
-				plugin->featurebits[i] = featurebits;
-			} else {
+			if (!fset->bits[i]) {
 				plugin_kill(
 				    plugin,
 				    "Featurebits returned by plugin is not a "
@@ -921,7 +904,6 @@ bool plugin_parse_getmanifest_response(const char *buffer,
 				    tok->end - tok->start, buffer + tok->start);
 				return true;
 			}
-			fset->bits[plugin_features_fset[i]] = featurebits;
 		}
 
 		if (plugin->dynamic && have_featurebits) {

lightningd/plugin.h

@@ -26,23 +26,6 @@ enum plugin_state {
 	CONFIGURED
 };
 
-/**
- * A plugin may register any number of featurebits that should be added to
- * various messages as part of their manifest. The following enum enumerates
- * the possible locations the featurebits can be added to, and are used as
- * indices into the array of featurebits in the plugin struct itself.
- *
- * If you edit this make sure that there is a matching entry in the
- * `plugin_features_type_names[]` array in plugin.c.
- */
-enum plugin_features_type {
-	PLUGIN_FEATURES_NODE,
-	PLUGIN_FEATURES_INIT,
-	PLUGIN_FEATURES_INVOICE,
-	PLUGIN_FEATURES_CHANNEL,
-};
-#define NUM_PLUGIN_FEATURES_TYPE (PLUGIN_FEATURES_INVOICE+1)
-
 /**
  * A plugin, exposed as a stub so we can pass it as an argument.
  */
@@ -83,11 +66,6 @@ struct plugin {
 
 	/* An array of subscribed topics */
 	char **subscriptions;
-
-	/* Featurebits for various locations that the plugin
-	 * registered. Indices correspond to the `plugin_features_type`
-	 * enum. */
-	u8 *featurebits[NUM_PLUGIN_FEATURES_TYPE];
 };
 
 /**
@@ -279,9 +257,4 @@ struct log *plugin_get_log(struct plugin *plugin);
  * call both! */
 struct plugin_destroyed *plugin_detect_destruction(const struct plugin *plugin);
 bool was_plugin_destroyed(struct plugin_destroyed *destroyed);
-
-/* Gather all the features of the given type that plugins registered. */
-u8 *plugins_collect_featurebits(const tal_t *ctx, const struct plugins *plugins,
-				enum plugin_features_type type);
-
 #endif /* LIGHTNING_LIGHTNINGD_PLUGIN_H */

lightningd/test/run-invoice-select-inchan.c

@@ -99,9 +99,6 @@ const u8 *failmsg_incorrect_or_unknown(const tal_t *ctx UNNEEDED,
 /* Generated stub for fatal */
 void   fatal(const char *fmt UNNEEDED, ...)
 { fprintf(stderr, "fatal called!\n"); abort(); }
-/* Generated stub for featurebits_or */
-u8 *featurebits_or(const tal_t *ctx UNNEEDED, const u8 *f1 TAKES UNNEEDED, const u8 *f2 TAKES UNNEEDED)
-{ fprintf(stderr, "featurebits_or called!\n"); abort(); }
 /* Generated stub for feature_is_set */
 bool feature_is_set(const u8 *features UNNEEDED, size_t bit UNNEEDED)
 { fprintf(stderr, "feature_is_set called!\n"); abort(); }
@@ -384,10 +381,6 @@ void per_peer_state_set_fds(struct per_peer_state *pps UNNEEDED,
 void plugin_hook_call_(struct lightningd *ld UNNEEDED, const struct plugin_hook *hook UNNEEDED,
 		       void *payload UNNEEDED, void *cb_arg UNNEEDED)
 { fprintf(stderr, "plugin_hook_call_ called!\n"); abort(); }
-/* Generated stub for plugins_collect_featurebits */
-u8 *plugins_collect_featurebits(const tal_t *ctx UNNEEDED, const struct plugins *plugins UNNEEDED,
-				enum plugin_features_type type UNNEEDED)
-{ fprintf(stderr, "plugins_collect_featurebits called!\n"); abort(); }
 /* Generated stub for subd_release_channel */
 void subd_release_channel(struct subd *owner UNNEEDED, void *channel UNNEEDED)
 { fprintf(stderr, "subd_release_channel called!\n"); abort(); }