From 4ba1599494bb57e0972a7ed17927d966a37e3875 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Wed, 23 Aug 2017 10:28:44 +0930
Subject: [PATCH] txowatch: include block in which spending tx is found.

onchaind wants the block height, for example.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 daemon/chaintopology.c | 2 +-
 daemon/peer.c          | 2 ++
 daemon/watch.c         | 6 ++++--
 daemon/watch.h         | 9 +++++++--
 4 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/daemon/chaintopology.c b/daemon/chaintopology.c
index 8c649839f..8c33ee8b3 100644
--- a/daemon/chaintopology.c
+++ b/daemon/chaintopology.c
@@ -110,7 +110,7 @@ static void connect_block(struct chain_topology *topo,
 
 			txo = txowatch_hash_get(&topo->txowatches, &out);
 			if (txo)
-				txowatch_fire(topo, txo, tx, j);
+				txowatch_fire(topo, txo, tx, j, b);
 		}
 
 		/* We did spends first, in case that tells us to watch tx. */
diff --git a/daemon/peer.c b/daemon/peer.c
index 8041b0e49..c08bfd688 100644
--- a/daemon/peer.c
+++ b/daemon/peer.c
@@ -3787,6 +3787,7 @@ static enum watch_result our_unilateral_depth(struct peer *peer,
 static enum watch_result our_htlc_spent(struct peer *peer,
 					const struct bitcoin_tx *tx,
 					size_t input_num,
+					const struct block *block,
 					struct htlc *h)
 {
 	struct sha256 sha;
@@ -4199,6 +4200,7 @@ static struct sha256 *get_rhash(struct peer *peer, u64 commit_num,
 static enum watch_result anchor_spent(struct peer *peer,
 				      const struct bitcoin_tx *tx,
 				      size_t input_num,
+				      const struct block *block,
 				      void *unused)
 {
 	Pkt *err;
diff --git a/daemon/watch.c b/daemon/watch.c
index 8853c65bf..1b8467dde 100644
--- a/daemon/watch.c
+++ b/daemon/watch.c
@@ -141,6 +141,7 @@ struct txowatch *watch_txo_(const tal_t *ctx,
 			    enum watch_result (*cb)(struct peer *peer,
 						    const struct bitcoin_tx *tx,
 						    size_t input_num,
+						    const struct block *block,
 						    void *),
 			    void *cbdata)
 {
@@ -204,7 +205,8 @@ void txwatch_fire(struct chain_topology *topo,
 void txowatch_fire(struct chain_topology *topo,
 		   const struct txowatch *txow,
 		   const struct bitcoin_tx *tx,
-		   size_t input_num)
+		   size_t input_num,
+		   const struct block *block)
 {
 	struct sha256_double txid;
 	enum watch_result r;
@@ -220,7 +222,7 @@ void txowatch_fire(struct chain_topology *topo,
 		  txid.sha.u.u8[1],
 		  txid.sha.u.u8[2],
 		  txid.sha.u.u8[3]);
-	r = txow->cb(txow->peer, tx, input_num, txow->cbdata);
+	r = txow->cb(txow->peer, tx, input_num, block, txow->cbdata);
 	switch (r) {
 	case DELETE_WATCH:
 		tal_free(txow);
diff --git a/daemon/watch.h b/daemon/watch.h
index d783e6389..2f18eb0b7 100644
--- a/daemon/watch.h
+++ b/daemon/watch.h
@@ -9,6 +9,7 @@
 #include <ccan/typesafe_cb/typesafe_cb.h>
 
 struct bitcoin_tx;
+struct block;
 struct lightningd_state;
 
 enum watch_result {
@@ -35,6 +36,7 @@ struct txowatch {
 	enum watch_result (*cb)(struct peer *peer,
 				const struct bitcoin_tx *tx,
 				size_t input_num,
+				const struct block *block,
 				void *cbdata);
 
 	void *cbdata;
@@ -119,6 +121,7 @@ struct txowatch *watch_txo_(const tal_t *ctx,
 			    enum watch_result (*cb)(struct peer *peer,
 						    const struct bitcoin_tx *tx,
 						    size_t input_num,
+						    const struct block *block,
 						    void *),
 			    void *cbdata);
 
@@ -128,7 +131,8 @@ struct txowatch *watch_txo_(const tal_t *ctx,
 				      (cb), (cbdata),			\
 				      struct peer *,			\
 				      const struct bitcoin_tx *,	\
-				      size_t),				\
+				       size_t,				\
+				       const struct block *block),	\
 		  (cbdata))
 
 void txwatch_fire(struct chain_topology *topo,
@@ -137,7 +141,8 @@ void txwatch_fire(struct chain_topology *topo,
 
 void txowatch_fire(struct chain_topology *topo,
 		   const struct txowatch *txow,
-		   const struct bitcoin_tx *tx, size_t input_num);
+		   const struct bitcoin_tx *tx, size_t input_num,
+		   const struct block *block);
 
 bool watching_txid(const struct chain_topology *topo,
 		   const struct sha256_double *txid);