dirmngr: Load the hosts file into libdns.

* dirmngr/dns-stuff.c (libdns_init): Actually load the hosts file into
libdns.
--

Previously, connecting to key servers specified in /etc/hosts was not
possible because libdns' hosts structure was initialized, but not
filled with the content of the hosts file.

GnuPG-bug-id: 2977
Signed-off-by: Justus Winter <justus@g10code.com>

1 files changed, 25 insertions, 1 deletions

diff --git a/dirmngr/dns-stuff.c b/dirmngr/dns-stuff.c
index ec9a09523..78c70e139 100644
--- a/dirmngr/dns-stuff.c
+++ b/dirmngr/dns-stuff.c
@@ -533,11 +533,35 @@ libdns_init (void)
   ld.hosts = dns_hosts_open (&derr);
   if (!ld.hosts)
     {
-      log_error ("failed to load hosts file: %s\n", gpg_strerror (err));
       err = libdns_error_to_gpg_error (derr);
+      log_error ("failed to initialize hosts file: %s\n", gpg_strerror (err));
       goto leave;
     }
 
+
+  {
+#if HAVE_W32_SYSTEM
+    char *hosts_path = xtryasprintf ("%s\System32\drivers\etc\hosts",
+                                     getenv ("SystemRoot"));
+    if (! hosts_path)
+      {
+        err = gpg_error_from_syserror ();
+        goto leave;
+      }
+
+    derr = dns_hosts_loadpath (ld.hosts, hosts_path);
+    xfree (hosts_path);
+#else
+    derr = dns_hosts_loadpath (ld.hosts, "/etc/hosts");
+#endif
+    if (derr)
+      {
+        err = libdns_error_to_gpg_error (derr);
+        log_error ("failed to load hosts file: %s\n", gpg_strerror (err));
+        goto leave;
+      }
+  }
+
   /* dns_hints_local for stub mode, dns_hints_root for recursive.  */
   ld.hints = (recursive_resolver
               ? dns_hints_root  (ld.resolv_conf, &derr)