valid_hostname chokes on trailing dot

[Chad Whitacre]

Greetings,

In src/util/valid_hostname.c (version 2.5.5), valid_hostname 
gives a "misplaced delimiter" warning if the hostname ends in a 
trailing dot. Since a trailing dot is technically part of a FQDN, 
I suggest that valid_hostname allow them. Patch attached.



chad

P.S. New to postfix, couldn't find any version control from the
 website, hence the patch against 2.5.5. The bug also exists in
 2.6-20080903.
--- src/util/valid_hostname.c.orig      Wed Oct  1 15:07:15 2008
+++ src/util/valid_hostname.c   Wed Oct  1 15:07:20 2008
@@ -109,7 +109,7 @@
            if (!ISDIGIT(ch))
                non_numeric = 1;
        } else if (ch == '.') {
-           if (label_length == 0 || cp[1] == 0) {
+           if (label_length == 0) {
                if (gripe)
                    msg_warn("%s: misplaced delimiter: %.100s", myname, name);
                return (0);