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remove failed remote forwards established by muliplexing
 from the list of active forwards; bz#2363, patch mostly by Yoann Ricordel; ok
 dtucker@
This commit is contained in:
djm@openbsd.org 2015-05-01 04:03:20 +00:00 committed by Damien Miller
parent 8312cfb8ad
commit ca430d4d9c
1 changed files with 15 additions and 2 deletions
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17
mux.c
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@ -1,4 +1,4 @@
/* $OpenBSD: mux.c,v 1.52 2015/05/01 04:01:58 djm Exp $ */
/* $OpenBSD: mux.c,v 1.53 2015/05/01 04:03:20 djm Exp $ */
/*
* Copyright (c) 2002-2008 Damien Miller <djm@openbsd.org>
*
@ -593,7 +593,9 @@ mux_confirm_remote_forward(int type, u_int32_t seq, void *ctxt)
return;
}
buffer_init(&out);
if (fctx->fid >= options.num_remote_forwards) {
if (fctx->fid >= options.num_remote_forwards ||
(options.remote_forwards[fctx->fid].connect_path == NULL &&
options.remote_forwards[fctx->fid].connect_host == NULL)) {
xasprintf(&failmsg, "unknown forwarding id %d", fctx->fid);
goto fail;
}
@ -627,6 +629,17 @@ mux_confirm_remote_forward(int type, u_int32_t seq, void *ctxt)
else
xasprintf(&failmsg, "remote port forwarding failed for "
"listen port %d", rfwd->listen_port);
debug2("%s: clearing registered forwarding for listen %d, "
"connect %s:%d", __func__, rfwd->listen_port,
rfwd->connect_path ? rfwd->connect_path :
rfwd->connect_host, rfwd->connect_port);
free(rfwd->listen_host);
free(rfwd->listen_path);
free(rfwd->connect_host);
free(rfwd->connect_path);
memset(rfwd, 0, sizeof(*rfwd));
}
fail:
error("%s: %s", __func__, failmsg);