launchd: Properly support launchd sockets in xauth

What we had in place before was a hack that always used ':0'.  This change
results in the bundle id being used to differentiate different connections.

Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/gethost.c b/gethost.c
index 3bfdb39..6b36340 100644
--- a/gethost.c
+++ b/gethost.c
@@ -280,7 +280,22 @@ struct addrlist *get_address_info (
 		src = buf;
 		len = strlen (buf);
 	    }
-	} else {
+	} else if(prefix == 0 && (strncmp (fulldpyname, "/tmp/launch", 11) == 0)) {
+        /* Use the bundle id (part preceding : in the basename) as our src id */
+        char *c;
+        strlcpy(buf, strrchr(fulldpyname, '/') + 1, sizeof(buf));
+        c = strchr(buf, ':');
+        
+        /* In the legacy case with no bundle id, use the full path */
+        if(c == buf) {
+            src = fulldpyname;
+        } else {
+            *c = '\0';
+            src = buf;
+        }
+
+        len = strlen(src);
+    } else {
 	    src = fulldpyname;
 	    len = prefix;
 	}