create_commit_tx: don't use protobufs in the API.

Hand anchor details and pubkeys directly; this is what we want
for the actual daemon which doesn't keep raw packets around.

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

test-cli/check-commit-sig.c

@@ -76,7 +76,7 @@ int main(int argc, char *argv[])
 	
 	/* Now create our commitment tx. */
 	proto_to_sha256(o1->revocation_hash, &rhash);
-	commit = create_commit_tx(ctx, o1, o2, a, &rhash, cstate);
+	commit = commit_tx_from_pkts(ctx, o1, o2, a, &rhash, cstate);
 
 	/* Check signature. */
 	subscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);

test-cli/create-commit-tx.c

@@ -73,7 +73,7 @@ int main(int argc, char *argv[])
 	redeemscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);
 
 	/* Now create commitment tx to spend 2/2 output of anchor. */
-	commit = create_commit_tx(ctx, o1, o2, a, &rhash, cstate);
+	commit = commit_tx_from_pkts(ctx, o1, o2, a, &rhash, cstate);
 
 	/* This only fails on malformed packets */
 	if (!commit)

test-cli/open-anchor.c

@@ -80,7 +80,7 @@ int main(int argc, char *argv[])
 	/* Now, create signature for their commitment tx. */
 	proto_to_sha256(o2->revocation_hash, &rhash);
 	invert_cstate(cstate);
- 	commit = create_commit_tx(ctx, o2, o1, &oa, &rhash, cstate);
+	commit = commit_tx_from_pkts(ctx, o2, o1, &oa, &rhash, cstate);
 
 	sign_tx_input(commit, 0, redeemscript, tal_count(redeemscript),
 		      &privkey, &pubkey1, &sig);

test-cli/open-commit-sig.c

@@ -63,7 +63,7 @@ int main(int argc, char *argv[])
 
 	proto_to_sha256(o2->revocation_hash, &rhash);
 	invert_cstate(cstate);
-	commit = create_commit_tx(ctx, o2, o1, a, &rhash, cstate);
+	commit = commit_tx_from_pkts(ctx, o2, o1, a, &rhash, cstate);
 
 	/* If contributions don't exceed fees, this fails. */
 	if (!commit)

test-cli/pkt.c

@@ -1,7 +1,9 @@
 #include "bitcoin/address.h"
+#include "bitcoin/locktime.h"
 #include "bitcoin/pubkey.h"
 #include "bitcoin/signature.h"
 #include "bitcoin/tx.h"
+#include "commit_tx.h"
 #include "pkt.h"
 #include "protobuf_convert.h"
 #include <ccan/crypto/sha256/sha256.h>
@@ -224,3 +226,28 @@ struct pkt *update_complete_pkt(const tal_t *ctx,
 	uc.revocation_preimage = sha256_to_proto(ctx, revocation_preimage);
 	return to_pkt(ctx, PKT__PKT_UPDATE_COMPLETE, &uc);
 }
+
+struct bitcoin_tx *commit_tx_from_pkts(const tal_t *ctx,
+				       OpenChannel *ours,
+				       OpenChannel *theirs,
+				       OpenAnchor *anchor,
+				       const struct sha256 *rhash,
+				       const struct channel_state *cstate)
+{
+	struct pubkey ourkey, theirkey;
+	struct sha256_double txid;
+	struct rel_locktime locktime;
+
+	proto_to_sha256(anchor->txid, &txid.sha);
+	/* Output goes to our final pubkeys */
+	if (!proto_to_pubkey(ours->final_key, &ourkey))
+		return NULL;
+	if (!proto_to_pubkey(theirs->final_key, &theirkey))
+		return NULL;
+	if (!proto_to_rel_locktime(theirs->delay, &locktime))
+		return NULL;
+	
+	return create_commit_tx(ctx, &ourkey, &theirkey, &locktime,
+				&txid, anchor->output_index, anchor->amount,
+				rhash, cstate);
+}

test-cli/pkt.h

@@ -162,4 +162,13 @@ struct pkt *update_signature_pkt(const tal_t *ctx,
 struct pkt *update_complete_pkt(const tal_t *ctx,
 				const struct sha256 *revocation_preimage);
 
+struct channel_state;
+
+struct bitcoin_tx *commit_tx_from_pkts(const tal_t *ctx,
+				       OpenChannel *ours,
+				       OpenChannel *theirs,
+				       OpenAnchor *anchor,
+				       const struct sha256 *rhash,
+				       const struct channel_state *cstate);
+
 #endif /* LIGHTNING_PKT_H */

test-cli/update-channel-accept.c

@@ -84,7 +84,7 @@ int main(int argc, char *argv[])
 
 	/* Now create THEIR new commitment tx to spend 2/2 output of anchor. */
 	invert_cstate(cstate);
-	commit = create_commit_tx(ctx, o2, o1, a, &their_rhash, cstate);
+	commit = commit_tx_from_pkts(ctx, o2, o1, a, &their_rhash, cstate);
 
 	/* If contributions don't exceed fees, this fails. */
 	if (!commit)

test-cli/update-channel-complete.c

@@ -74,7 +74,7 @@ int main(int argc, char *argv[])
 	redeemscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);
 
 	/* Check their signature signs our new commit tx correctly. */
-	commit = create_commit_tx(ctx, o1, o2, a, &our_rhash, cstate);
+	commit = commit_tx_from_pkts(ctx, o1, o2, a, &our_rhash, cstate);
 	if (!commit)
 		errx(1, "Delta too large");
 

test-cli/update-channel-signature.c

@@ -86,7 +86,7 @@ int main(int argc, char *argv[])
 	redeemscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);
 
 	/* Check our new commit is signed correctly by them. */
-	commit = create_commit_tx(ctx, o1, o2, a, &our_rhash, cstate);
+	commit = commit_tx_from_pkts(ctx, o1, o2, a, &our_rhash, cstate);
 	if (!commit)
 		errx(1, "Invalid packets");
 
@@ -97,7 +97,7 @@ int main(int argc, char *argv[])
 
 	/* Now create THEIR new commitment tx to spend 2/2 output of anchor. */
 	invert_cstate(cstate);
-	commit = create_commit_tx(ctx, o2, o1, a, &their_rhash, cstate);
+	commit = commit_tx_from_pkts(ctx, o2, o1, a, &their_rhash, cstate);
 	if (!commit)
 		errx(1, "Invalid packets");