From 9fc6e96444bf913c5dc8d1db1c6ff0eed55b9781 Mon Sep 17 00:00:00 2001
From: Nicolas Viennot <nicolas@viennot.biz>
Date: Sun, 10 Nov 2019 15:31:54 -0500
Subject: [PATCH] Send uname

---
 tmate-encoder.c  | 19 +++++++++++++++++++
 tmate-protocol.h |  3 +++
 tmate-session.c  |  1 +
 tmate.h          |  1 +
 4 files changed, 24 insertions(+)

diff --git a/tmate-encoder.c b/tmate-encoder.c
index 0040a3bf..e1373451 100644
--- a/tmate-encoder.c
+++ b/tmate-encoder.c
@@ -1,3 +1,4 @@
+#include <sys/utsname.h>
 #include "tmate.h"
 #include "tmate-protocol.h"
 #include "window-copy.h"
@@ -12,6 +13,23 @@ void tmate_write_header(void)
 	pack(string, VERSION);
 }
 
+void tmate_write_uname(void)
+{
+	struct utsname name;
+	if (uname(&name) < 0) {
+		tmate_debug("uname() failed");
+		return;
+	}
+
+	pack(array, 6);
+	pack(int, TMATE_OUT_UNAME);
+	pack(string, name.sysname);
+	pack(string, name.nodename);
+	pack(string, name.release);
+	pack(string, name.version);
+	pack(string, name.machine);
+}
+
 void tmate_write_ready(void)
 {
 	pack(array, 1);
@@ -464,6 +482,7 @@ void tmate_send_reconnection_state(struct tmate_session *session)
 	tmate_send_reconnection_data(session);
 	replay_saved_cmd(session);
 	/* TODO send all option variables */
+	tmate_write_uname();
 	tmate_write_ready();
 
 	tmate_sync_layout();
diff --git a/tmate-protocol.h b/tmate-protocol.h
index 595b6271..81716bb2 100644
--- a/tmate-protocol.h
+++ b/tmate-protocol.h
@@ -56,6 +56,7 @@ enum tmate_daemon_out_msg_types {
 	TMATE_OUT_RECONNECT,
 	TMATE_OUT_SNAPSHOT,
 	TMATE_OUT_EXEC_CMD,
+	TMATE_OUT_UNAME,
 };
 
 /*
@@ -77,6 +78,8 @@ enum tmate_daemon_out_msg_types {
 [TMATE_OUT_RECONNECT, string: reconnection_data]
 [TMATE_OUT_SNAPSHOT, ...]
 [TMATE_OUT_EXEC_CMD, string: cmd_name, ...string: args]
+[TMATE_OUT_UNAME, string: name.sysname, string: name.nodename,
+                  string: name.release, string: name.version, string: name.machine]
 */
 
 enum tmate_daemon_in_msg_types {
diff --git a/tmate-session.c b/tmate-session.c
index 10c6123b..d88ec5a5 100644
--- a/tmate-session.c
+++ b/tmate-session.c
@@ -200,6 +200,7 @@ void tmate_session_start(void)
 	}
 
 	send_authorized_keys();
+	tmate_write_uname();
 	tmate_write_ready();
 	lookup_and_connect();
 }
diff --git a/tmate.h b/tmate.h
index 5c3af6a0..1fdda4e0 100644
--- a/tmate.h
+++ b/tmate.h
@@ -79,6 +79,7 @@ extern void unpack_array(struct tmate_unpacker *uk, struct tmate_unpacker *neste
 struct tmate_session;
 
 extern void tmate_write_header(void);
+extern void tmate_write_uname(void);
 extern void tmate_write_ready(void);
 extern void tmate_sync_layout(void);
 extern void tmate_pty_data(struct window_pane *wp, const char *buf, size_t len);