- djm@cvs.openbsd.org 2010/07/12 22:41:13

[ssh.c ssh_config.5]
     expand %h to the hostname in ssh_config Hostname options. While this
     sounds useless, it is actually handy for working with unqualified
     hostnames:

     Host *.*
        Hostname %h
     Host *
        Hostname %h.example.org

     "I like it" markus@

ChangeLog

@@ -10,6 +10,18 @@
      [ssh.c]
      Make ExitOnForwardFailure work with fork-after-authentication ("ssh -f")
      for protocol 2. ok markus@
+   - djm@cvs.openbsd.org 2010/07/12 22:41:13
+     [ssh.c ssh_config.5]
+     expand %h to the hostname in ssh_config Hostname options. While this
+     sounds useless, it is actually handy for working with unqualified
+     hostnames:
+     
+     Host *.*
+        Hostname %h
+     Host *
+        Hostname %h.example.org
+     
+     "I like it" markus@
 
 20100714
  - (tim) [contrib/redhat/openssh.spec] Bug 1796: Test for skip_x11_askpass

ssh.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh.c,v 1.342 2010/07/12 22:38:52 djm Exp $ */
+/* $OpenBSD: ssh.c,v 1.343 2010/07/12 22:41:13 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -679,6 +679,11 @@ main(int ac, char **av)
 		options.port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
 	}
 
+	if (options.hostname != NULL) {
+		host = percent_expand(options.hostname,
+		    "h", host, (char *)NULL);
+	}
+
 	if (options.local_command != NULL) {
 		char thishost[NI_MAXHOST];
 
@@ -688,16 +693,12 @@ main(int ac, char **av)
 		debug3("expanding LocalCommand: %s", options.local_command);
 		cp = options.local_command;
 		options.local_command = percent_expand(cp, "d", pw->pw_dir,
-		    "h", options.hostname? options.hostname : host,
+		    "h", host, "l", thishost, "n", host, "r", options.user,
-                    "l", thishost, "n", host, "r", options.user, "p", buf,
+		    "p", buf, "u", pw->pw_name, (char *)NULL);
-                    "u", pw->pw_name, (char *)NULL);
 		debug3("expanded LocalCommand: %s", options.local_command);
 		xfree(cp);
 	}
 
-	if (options.hostname != NULL)
-		host = options.hostname;
-
 	/* force lowercase for hostkey matching */
 	if (options.host_key_alias != NULL) {
 		for (p = options.host_key_alias; *p; p++)

ssh_config.5

@@ -34,8 +34,8 @@
 .\" (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_config.5,v 1.135 2010/06/26 00:57:07 jmc Exp $
+.\" $OpenBSD: ssh_config.5,v 1.136 2010/07/12 22:41:13 djm Exp $
-.Dd $Mdocdate: June 26 2010 $
+.Dd $Mdocdate: July 12 2010 $
 .Dt SSH_CONFIG 5
 .Os
 .Sh NAME
@@ -537,6 +537,10 @@ or for multiple servers running on a single host.
 .It Cm HostName
 Specifies the real host name to log into.
 This can be used to specify nicknames or abbreviations for hosts.
+If the hostname contains the character sequence
+.Ql %h ,
+then this will be replaced with the host name specified on the commandline
+(this is useful for manipulating unqualified names).
 The default is the name given on the command line.
 Numeric IP addresses are also permitted (both on the command line and in
 .Cm HostName