case sensitive domain based forwarding

[gh-ix]

Hello, a rather nasty issue with windows clients: Some of them query WINDOMAIN.LOCAL – upper case.
Which dnrd doesn't match against "-s 169.254.0.53:windowmain.local".
Adding the same upper case doesn't work either.
This badly breaks real world ActiveDirectory clients.
Will have a look to fix myself, but skills and tthe resulting time needed scare me...

And there's another ugly thing to cope with:
Some cisco phones require case sensitive answers: https://drjohnstechtalk.com/blog/2015/04/example-of-case-sensitive-dns-usage/
Don't know if that would work with current code... (assuming upstream DNS responds case sensitive).

Thanks,
-harry

[gh-ix]

Excuse the typo above, (edit doesn't work here), it's only about case sensitivity, the config in my real world setup dusn't suffer from that typo!

[gh-ix]

For the records:
This very poor and uninvestigated diff solves my problem for now:
--- domnode.c 2004-10-19 13:45:21.000000000 +0000
+++ /tmp/domnode.c 2019-06-11 18:58:34.736213000 +0000
@@ -157,7 +157,7 @@
will be encoded as "\3yes\3org" while hayes.org will be encoded
as "\5hayes\3org"
*/

• if ((strncmp(d->domain, p, maxlen - (p - name)) == 0) && (h > maxfound)) {

• if ((strncasecmp(d->domain, p, maxlen - (p - name)) == 0) && (h > maxfound)) {
  maxfound = h; /* max length found */
  curr = d;
  }

No Idea about the checks before, so maybe this is foot-shooting. But better than head-shooting ;-)

-harry