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authordjm <djm@openbsd.org>2018-06-01 03:11:49 +0000
committerdjm <djm@openbsd.org>2018-06-01 03:11:49 +0000
commitcc35ad4a31b1a835f787a15be579f6a2ac946441 (patch)
treecd52c134e7543e4f8da4c4d42a92377c9ebf7e03 /usr.bin/ssh/ssh.c
parentremove 'where' parameter from all x*() functions in utils.c, it doesn't (diff)
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prefer argv0 to "ssh" when re-executing ssh for ProxyJump directive;
bz2831, feedback and ok dtucker@
Diffstat (limited to 'usr.bin/ssh/ssh.c')
-rw-r--r--usr.bin/ssh/ssh.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/usr.bin/ssh/ssh.c b/usr.bin/ssh/ssh.c
index 90cce2aa111..a4eb6902120 100644
--- a/usr.bin/ssh/ssh.c
+++ b/usr.bin/ssh/ssh.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh.c,v 1.477 2018/04/14 21:50:41 djm Exp $ */
+/* $OpenBSD: ssh.c,v 1.478 2018/06/01 03:11:49 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1140,6 +1140,14 @@ main(int ac, char **av)
*/
if (options.jump_host != NULL) {
char port_s[8];
+ const char *sshbin = argv0;
+
+ /*
+ * Try to use SSH indicated by argv[0], but fall back to
+ * "ssh" if it appears unavailable.
+ */
+ if (strchr(argv0, '/') != NULL && access(argv0, X_OK) != 0)
+ sshbin = "ssh";
/* Consistency check */
if (options.proxy_command != NULL)
@@ -1148,7 +1156,8 @@ main(int ac, char **av)
options.proxy_use_fdpass = 0;
snprintf(port_s, sizeof(port_s), "%d", options.jump_port);
xasprintf(&options.proxy_command,
- "ssh%s%s%s%s%s%s%s%s%s%.*s -W '[%%h]:%%p' %s",
+ "%s%s%s%s%s%s%s%s%s%s%.*s -W '[%%h]:%%p' %s",
+ sshbin,
/* Optional "-l user" argument if jump_user set */
options.jump_user == NULL ? "" : " -l ",
options.jump_user == NULL ? "" : options.jump_user,