[openssh-commits] [openssh] 01/02: upstream commit

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djm pushed a commit to branch master
in repository openssh.

commit 68d2dfc464fbcdf8d6387884260f9801f4352393
Author: djm at openbsd.org <djm at openbsd.org>
Date:   Tue Mar 3 06:48:58 2015 +0000

    upstream commit
    
    Allow "ssh -Q protocol-version" to list supported SSH
     protocol versions. Useful for detecting builds without SSH v.1 support; idea
     and ok markus@
---
 ssh.1 | 12 +++++++-----
 ssh.c |  9 ++++++++-
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/ssh.1 b/ssh.1
index 5649212..da64b71 100644
--- a/ssh.1
+++ b/ssh.1
@@ -33,8 +33,8 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: ssh.1,v 1.355 2015/01/30 11:43:14 djm Exp $
-.Dd $Mdocdate: January 30 2015 $
+.\" $OpenBSD: ssh.1,v 1.356 2015/03/03 06:48:58 djm Exp $
+.Dd $Mdocdate: March 3 2015 $
 .Dt SSH 1
 .Os
 .Sh NAME
@@ -58,7 +58,7 @@
 .Op Fl O Ar ctl_cmd
 .Op Fl o Ar option
 .Op Fl p Ar port
-.Op Fl Q Cm cipher | cipher-auth | mac | kex | key
+.Op Fl Q Cm cipher | cipher-auth | mac | kex | key | protocol-version
 .Op Fl R Oo Ar bind_address : Oc Ns Ar port : Ns Ar host : Ns Ar hostport
 .Op Fl S Ar ctl_path
 .Op Fl W Ar host : Ns Ar port
@@ -497,7 +497,7 @@ For full details of the options listed below, and their possible values, see
 Port to connect to on the remote host.
 This can be specified on a
 per-host basis in the configuration file.
-.It Fl Q Cm cipher | cipher-auth | mac | kex | key
+.It Fl Q Cm cipher | cipher-auth | mac | kex | key | protocol-version
 Queries
 .Nm
 for the algorithms supported for the specified version 2.
@@ -511,7 +511,9 @@ The available features are:
 .Ar kex
 (key exchange algorithms),
 .Ar key
-(key types).
+(key types) and
+.Ar protocol-version
+(supported SSH protocol versions).
 .It Fl q
 Quiet mode.
 Causes most warning and diagnostic messages to be suppressed.
diff --git a/ssh.c b/ssh.c
index 57b53fb..0ad82f0 100644
--- a/ssh.c
+++ b/ssh.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh.c,v 1.415 2015/02/20 22:17:21 djm Exp $ */
+/* $OpenBSD: ssh.c,v 1.416 2015/03/03 06:48:58 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo at cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo at cs.hut.fi>, Espoo, Finland
@@ -678,6 +678,13 @@ main(int ac, char **av)
 				cp = key_alg_list(1, 0);
 			else if (strcmp(optarg, "key-plain") == 0)
 				cp = key_alg_list(0, 1);
+			else if (strcmp(optarg, "protocol-version") == 0) {
+#ifdef WITH_SSH1
+				cp = xstrdup("1\n2");
+#else
+				cp = xstrdup("2");
+#endif
+			}
 			if (cp == NULL)
 				fatal("Unsupported query \"%s\"", optarg);
 			printf("%s\n", cp);

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