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-rw-r--r--usr.bin/ssh/serverloop.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/usr.bin/ssh/serverloop.c b/usr.bin/ssh/serverloop.c
index f7458f07400..9d077d7b334 100644
--- a/usr.bin/ssh/serverloop.c
+++ b/usr.bin/ssh/serverloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: serverloop.c,v 1.193 2017/05/31 07:00:13 markus Exp $ */
+/* $OpenBSD: serverloop.c,v 1.194 2017/08/11 03:58:36 dtucker Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -198,6 +198,7 @@ wait_until_can_do_something(int connection_in, int connection_out,
int ret;
time_t minwait_secs = 0;
int client_alive_scheduled = 0;
+ static time_t last_client_time;
/* Allocate and update select() masks for channel descriptors. */
channel_prepare_select(readsetp, writesetp, maxfdp, nallocp,
@@ -262,8 +263,19 @@ wait_until_can_do_something(int connection_in, int connection_out,
memset(*writesetp, 0, *nallocp);
if (errno != EINTR)
error("select: %.100s", strerror(errno));
- } else if (ret == 0 && client_alive_scheduled)
- client_alive_check();
+ } else if (client_alive_scheduled) {
+ time_t now = monotime();
+
+ if (ret == 0) { /* timeout */
+ client_alive_check();
+ } else if (FD_ISSET(connection_in, *readsetp)) {
+ last_client_time = now;
+ } else if (last_client_time != 0 && last_client_time +
+ options.client_alive_interval < now) {
+ client_alive_check();
+ last_client_time = now;
+ }
+ }
notify_done(*readsetp);
}