From d4a172e22192916a85ffb80bce88585a199a27a5 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Fri, 23 Feb 2018 16:23:47 +1030
Subject: [PATCH] common: peer_billboard() helper for updating the billboard.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 common/Makefile         |  1 +
 common/peer_billboard.c | 17 +++++++++++++++++
 common/peer_billboard.h |  9 +++++++++
 common/status.c         |  2 +-
 common/status.h         |  1 +
 5 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 common/peer_billboard.c
 create mode 100644 common/peer_billboard.h

diff --git a/common/Makefile b/common/Makefile
index 7245c8da3..368d55622 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -25,6 +25,7 @@ COMMON_SRC_NOGEN :=				\
 	common/keyset.c				\
 	common/memleak.c			\
 	common/msg_queue.c			\
+	common/peer_billboard.c			\
 	common/peer_failed.c			\
 	common/permute_tx.c			\
 	common/ping.c				\
diff --git a/common/peer_billboard.c b/common/peer_billboard.c
new file mode 100644
index 000000000..29c4062af
--- /dev/null
+++ b/common/peer_billboard.c
@@ -0,0 +1,17 @@
+#include <ccan/tal/str/str.h>
+#include <common/gen_status_wire.h>
+#include <common/peer_billboard.h>
+#include <common/status.h>
+
+void peer_billboard(bool perm, const char *fmt, ...)
+{
+	va_list ap;
+	char *str;
+
+	va_start(ap, fmt);
+	str = tal_vfmt(NULL, fmt, ap);
+	va_end(ap);
+
+	status_send(take(towire_status_peer_billboard(NULL, perm, str)));
+	tal_free(str);
+}
diff --git a/common/peer_billboard.h b/common/peer_billboard.h
new file mode 100644
index 000000000..0f558e580
--- /dev/null
+++ b/common/peer_billboard.h
@@ -0,0 +1,9 @@
+#ifndef LIGHTNING_COMMON_PEER_BILLBOARD_H
+#define LIGHTNING_COMMON_PEER_BILLBOARD_H
+#include "config.h"
+#include <stdbool.h>
+
+/* Key information for RPC display: perm means it outlasts this daemon. */
+void peer_billboard(bool perm, const char *fmt, ...);
+
+#endif /* LIGHTNING_COMMON_PEER_BILLBOARD_H */
diff --git a/common/status.c b/common/status.c
index 8a9cac251..640923945 100644
--- a/common/status.c
+++ b/common/status.c
@@ -57,7 +57,7 @@ void status_setup_async(struct daemon_conn *master)
 	setup_logging_sighandler();
 }
 
-static void status_send(const u8 *msg TAKES)
+void status_send(const u8 *msg TAKES)
 {
 	if (status_fd >= 0) {
 		int type =fromwire_peektype(msg);
diff --git a/common/status.h b/common/status.h
index 4a3f2e3ff..52718e574 100644
--- a/common/status.h
+++ b/common/status.h
@@ -51,5 +51,6 @@ void status_failed(enum status_failreason code,
  * msg NULL == read failure. */
 void master_badmsg(u32 type_expected, const u8 *msg) NORETURN;
 
+void status_send(const u8 *msg TAKES);
 void status_send_fatal(const u8 *msg TAKES, int fd1, int fd2) NORETURN;
 #endif /* LIGHTNING_COMMON_STATUS_H */