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upstream: when deciding whether to enable keystroke timing

Browse Source 
obfuscation, only consider enabling it when a channel with a tty is open.

Avoids turning on the obfucation when X11 forwarding only is in use,
which slows it right down. Reported by Roger Marsh

OpenBSD-Commit-ID: c292f738db410f729190f92de100c39ec931a4f1
This commit is contained in:
djm@openbsd.org
2023-11-15 22:51:49 +00:00
committed by Damien Miller
parent 676377ce67
commit 050c335c8d
3 changed files with 22 additions and 4 deletions
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19
channels.c
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@@ -1,4 +1,4 @@
/* $OpenBSD: channels.c,v 1.433 2023/09/04 00:01:46 djm Exp $ */
/* $OpenBSD: channels.c,v 1.434 2023/11/15 22:51:49 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -898,6 +898,23 @@ channel_still_open(struct ssh *ssh)
return 0;
}
/* Returns true if a channel with a TTY is open. */
int
channel_tty_open(struct ssh *ssh)
{
u_int i;
Channel *c;
for (i = 0; i < ssh->chanctxt->channels_alloc; i++) {
c = ssh->chanctxt->channels[i];
if (c == NULL || c->type != SSH_CHANNEL_OPEN)
continue;
if (c->client_tty)
return 1;
}
return 0;
}
/* Returns the id of an open channel suitable for keepaliving */
int
channel_find_open(struct ssh *ssh)