- stevesk@cvs.openbsd.org 2002/01/27 18:08:17

     [ssh.c]
     handle simple case to identify FamilyLocal display; ok markus@

1 files changed, 17 insertions, 4 deletions

diff --git a/ssh.c b/ssh.c
index 8e1604e21..46d9d747a 100644
--- a/ssh.c
+++ b/ssh.c
@@ -39,7 +39,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: ssh.c,v 1.158 2002/01/16 13:17:51 markus Exp $");
+RCSID("$OpenBSD: ssh.c,v 1.159 2002/01/27 18:08:17 stevesk Exp $");
 
 #include <openssl/evp.h>
 #include <openssl/err.h>
@@ -793,14 +793,27 @@ x11_get_proto(char **_proto, char **_data)
         static char proto[512], data[512];
         FILE *f;
         int got_data = 0, i;
+        char *display;
 
         *_proto = proto;
         *_data = data;
         proto[0] = data[0] = '\0';
-        if (options.xauth_location) {
+        if (options.xauth_location && (display = getenv("DISPLAY"))) {
                 /* Try to get Xauthority information for the display. */
-                snprintf(line, sizeof line, "%.100s list %.200s 2>" _PATH_DEVNULL,
-                    options.xauth_location, getenv("DISPLAY"));
+                if (strncmp(display, "localhost:", 10) == 0)
+                        /*
+                         * Handle FamilyLocal case where $DISPLAY does
+                         * not match an authorization entry.  For this we
+                         * just try "xauth list unix:displaynum.screennum".
+                         * XXX: "localhost" match to determine FamilyLocal
+                         *      is not perfect.
+                         */
+                        snprintf(line, sizeof line, "%.100s list unix:%s 2>"
+                            _PATH_DEVNULL, options.xauth_location, display+10);
+                else
+                        snprintf(line, sizeof line, "%.100s list %.200s 2>"
+                            _PATH_DEVNULL, options.xauth_location, display);
+                debug2("x11_get_proto %s", line);
                 f = popen(line, "r");
                 if (f && fgets(line, sizeof(line), f) &&
                     sscanf(line, "%*s %511s %511s", proto, data) == 2)