openingd: Return the penalty base after funding completes

lightningd/Makefile

@@ -53,6 +53,7 @@ LIGHTNINGD_COMMON_OBJS :=			\
 	common/onion.o				\
 	common/onionreply.o			\
 	common/param.o				\
+	common/penalty_base.o			\
 	common/per_peer_state.o			\
 	common/permute_tx.o			\
 	common/pseudorand.o			\

lightningd/opening_control.c

@@ -11,6 +11,7 @@
 #include <common/jsonrpc_errors.h>
 #include <common/key_derive.h>
 #include <common/param.h>
+#include <common/penalty_base.h>
 #include <common/per_peer_state.h>
 #include <common/utils.h>
 #include <common/wallet_tx.h>
@@ -374,6 +375,7 @@ static void opening_funder_finished(struct subd *openingd, const u8 *resp,
 	struct lightningd *ld = openingd->ld;
 	u8 *remote_upfront_shutdown_script;
 	struct per_peer_state *pps;
+	struct penalty_base *pbase;
 
 	/* This is a new channel_info.their_config so set its ID to 0 */
 	channel_info.their_config.id = 0;
@@ -381,6 +383,7 @@ static void opening_funder_finished(struct subd *openingd, const u8 *resp,
 	if (!fromwire_opening_funder_reply(resp, resp,
 					   &channel_info.their_config,
 					   &remote_commit,
+					   &pbase,
 					   &remote_commit_sig,
 					   &pps,
 					   &channel_info.theirbase.revocation,
@@ -464,6 +467,7 @@ static void opening_fundee_finished(struct subd *openingd,
 	struct channel *channel;
 	u8 *remote_upfront_shutdown_script, *local_upfront_shutdown_script;
 	struct per_peer_state *pps;
+	struct penalty_base *pbase;
 
 	log_debug(uc->log, "Got opening_fundee_finish_response");
 
@@ -473,6 +477,7 @@ static void opening_fundee_finished(struct subd *openingd,
 	if (!fromwire_opening_fundee(tmpctx, reply,
 				     &channel_info.their_config,
 				     &remote_commit,
+				     &pbase,
 				     &remote_commit_sig,
 				     &pps,
 				     &channel_info.theirbase.revocation,

openingd/Makefile

@@ -63,6 +63,7 @@ OPENINGD_COMMON_OBJS :=				\
 	common/memleak.o			\
 	common/msg_queue.o			\
 	common/onionreply.o			\
+	common/penalty_base.o			\
 	common/per_peer_state.o			\
 	common/peer_billboard.o			\
 	common/peer_failed.o			\

openingd/opening_wire.csv

@@ -49,11 +49,13 @@ msgdata,opening_got_offer_reply,rejection,?wirestring,
 msgdata,opening_got_offer_reply,shutdown_len,u16,
 msgdata,opening_got_offer_reply,our_shutdown_scriptpubkey,?u8,shutdown_len
 
+#include <common/penalty_base.h>
 # Openingd->master: we've successfully offered channel.
 # This gives their sig, means we can broadcast tx: we're done.
 msgtype,opening_funder_reply,6101
 msgdata,opening_funder_reply,their_config,channel_config,
 msgdata,opening_funder_reply,first_commit,bitcoin_tx,
+msgdata,opening_funder_reply,pbase,?penalty_base,
 msgdata,opening_funder_reply,first_commit_sig,bitcoin_signature,
 msgdata,opening_funder_reply,pps,per_peer_state,
 msgdata,opening_funder_reply,revocation_basepoint,pubkey,
@@ -104,6 +106,7 @@ msgdata,opening_funder_failed,reason,wirestring,
 msgtype,opening_fundee,6003
 msgdata,opening_fundee,their_config,channel_config,
 msgdata,opening_fundee,first_commit,bitcoin_tx,
+msgdata,opening_fundee,pbase,?penalty_base,
 msgdata,opening_fundee,first_commit_sig,bitcoin_signature,
 msgdata,opening_fundee,pps,per_peer_state,
 msgdata,opening_fundee,revocation_basepoint,pubkey,

openingd/openingd.c

@@ -31,6 +31,7 @@
 #include <common/overflows.h>
 #include <common/peer_billboard.h>
 #include <common/peer_failed.h>
+#include <common/penalty_base.h>
 #include <common/pseudorand.h>
 #include <common/read_peer_msg.h>
 #include <common/status.h>
@@ -659,7 +660,8 @@ static u8 *funder_channel_start(struct state *state, u8 channel_flags)
 static bool funder_finalize_channel_setup(struct state *state,
 					  struct amount_msat local_msat,
 					  struct bitcoin_signature *sig,
-					  struct bitcoin_tx **tx)
+					  struct bitcoin_tx **tx,
+					  struct penalty_base **pbase)
 {
 	u8 *msg;
 	struct channel_id id_in;
@@ -720,6 +722,11 @@ static bool funder_finalize_channel_setup(struct state *state,
 		goto fail;
 	}
 
+	if (direct_outputs[LOCAL])
+		*pbase = penalty_base_new(state, 0, *tx, direct_outputs[LOCAL]);
+	else
+		*pbase = NULL;
+
 	/* We ask the HSM to sign their commitment transaction for us: it knows
 	 * our funding key, it just needs the remote funding key to create the
 	 * witness script.  It also needs the amount of the funding output,
@@ -850,9 +857,11 @@ fail:
 
 static u8 *funder_channel_complete(struct state *state)
 {
+	/* Remote commitment tx */
 	struct bitcoin_tx *tx;
 	struct bitcoin_signature sig;
 	struct amount_msat local_msat;
+	struct penalty_base *pbase;
 
 	/* Update the billboard about what we're doing*/
 	peer_billboard(false,
@@ -869,12 +878,14 @@ static u8 *funder_channel_complete(struct state *state)
 			      type_to_string(tmpctx, struct amount_sat,
 					     &state->funding));
 
-	if (!funder_finalize_channel_setup(state, local_msat, &sig, &tx))
+	if (!funder_finalize_channel_setup(state, local_msat, &sig, &tx,
+					   &pbase))
 		return NULL;
 
 	return towire_opening_funder_reply(state,
 					   &state->remoteconf,
 					   tx,
+					   pbase,
 					   &sig,
 					   state->pps,
 					   &state->their_points.revocation,
@@ -905,6 +916,7 @@ static u8 *fundee_channel(struct state *state, const u8 *open_channel_msg)
 	u8 channel_flags;
 	char* err_reason;
 	struct wally_tx_output *direct_outputs[NUM_SIDES];
+	struct penalty_base *pbase;
 
 	/* BOLT #2:
 	 *
@@ -1274,9 +1286,16 @@ static u8 *fundee_channel(struct state *state, const u8 *open_channel_msg)
 	assert(sig.sighash_type == SIGHASH_ALL);
 	msg = towire_funding_signed(state, &state->channel_id, &sig.s);
 
+	if (direct_outputs[LOCAL] != NULL)
+		pbase = penalty_base_new(tmpctx, 0, remote_commit,
+					 direct_outputs[LOCAL]);
+	else
+		pbase = NULL;
+
 	return towire_opening_fundee(state,
 				     &state->remoteconf,
 				     local_commit,
+				     pbase,
 				     &theirsig,
 				     state->pps,
 				     &theirs.revocation,