app-crypt/gnupg/files/gnupg-2.1.17-dirmngr-Strip-root-zone-suffix-from-libdns-cname-res.patch


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From b200e636ab20d2aa93d9f71f3789db5a04af0a56 Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Mon, 2 Jan 2017 10:00:33 +0100
Subject: [PATCH] dirmngr: Strip root zone suffix from libdns cname results.

* dirmngr/dns-stuff.c (resolve_name_libdns): Strip trailing dot.
(get_dns_cname_libdns): Ditto.
--

Signed-off-by: Werner Koch <wk@gnupg.org>
---
 dirmngr/dns-stuff.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/dirmngr/dns-stuff.c b/dirmngr/dns-stuff.c
index a31b073..f2e1df9 100644
--- a/dirmngr/dns-stuff.c
+++ b/dirmngr/dns-stuff.c
@@ -732,6 +732,10 @@ resolve_name_libdns (const char *name, unsigned short port,
               err = gpg_error_from_syserror ();
               goto leave;
             }
+          /* Libdns appends the root zone part which is problematic
+           * for most other functions - strip it.  */
+          if (**r_canonname && (*r_canonname)[strlen (*r_canonname)-1] == '.')
+            (*r_canonname)[strlen (*r_canonname)-1] = 0;
         }
 
       dai = xtrymalloc (sizeof *dai + ent->ai_addrlen -1);
@@ -1899,6 +1903,13 @@ get_dns_cname_libdns (const char *name, char **r_cname)
   *r_cname = xtrystrdup (cname.host);
   if (!*r_cname)
     err = gpg_error_from_syserror ();
+  else
+    {
+      /* Libdns appends the root zone part which is problematic
+       * for most other functions - strip it.  */
+      if (**r_cname && (*r_cname)[strlen (*r_cname)-1] == '.')
+        (*r_cname)[strlen (*r_cname)-1] = 0;
+    }
 
  leave:
   dns_free (ans);
-- 
2.8.1