X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/putty/blobdiff_plain/e0e7dff87dc3f482da6ab00317664474b0f82995..227075f37bf2050ccadbefc091f7cceed78064dc:/unix/ux_x11.c

diff --git a/unix/ux_x11.c b/unix/ux_x11.c
index 7753c854..47d0ef5f 100644
--- a/unix/ux_x11.c
+++ b/unix/ux_x11.c
@@ -14,14 +14,22 @@ void platform_get_x11_auth(char *display, int *protocol,
     int maxsize = *datalen;
     char *localbuf;
 
-    command = dupprintf("xauth list %s 2>/dev/null", display);
+    /*
+     * Normally we should run `xauth list DISPLAYNAME'. However,
+     * there's an oddity when the display is local: the display
+     * `localhost:0' (or `:0') should become just `:0'.
+     */
+    if (!strncmp(display, "localhost:", 10))
+	command = dupprintf("xauth list %s 2>/dev/null", display+9);
+    else
+	command = dupprintf("xauth list %s 2>/dev/null", display);
     fp = popen(command, "r");
     sfree(command);
 
     if (!fp)
         return;                        /* assume no auth */
 
-    localbuf = smalloc(maxsize);
+    localbuf = snewn(maxsize, char);
 
     while (1) {
         /*