add support for zkey CNAMEs #5978

[oweals/gnunet.git] / src / gns / gnunet-service-gns_resolver.c

diff --git a/src/gns/gnunet-service-gns_resolver.c b/src/gns/gnunet-service-gns_resolver.c
index 8639a239b50068a46fde466c4b39027b9245bcc5..4b26418186099ff861b4d13e47910ac5b4e1dec1 100644 (file)
--- a/src/gns/gnunet-service-gns_resolver.c
+++ b/src/gns/gnunet-service-gns_resolver.c
@@ -1232,13 +1232,14 @@ handle_gns_cname_result (struct GNS_ResolverHandle *rh,
 {
   size_t nlen;
   char *res;
+  const char *tld;
   struct AuthorityChain *ac;
   int af;
+  struct GNUNET_CRYPTO_EcdsaPublicKey zone;
 
   nlen = strlen (cname);
-  if ((nlen > 2) &&
-      (0 == strcmp (".+",
-                    &cname[nlen - 2])))
+  tld = GNS_get_tld (cname);
+  if (0 == strcmp ("+", tld))
   {
     /* CNAME resolution continues relative to current domain */
     if (0 == rh->name_resolution_pos)
@@ -1272,6 +1273,42 @@ handle_gns_cname_result (struct GNS_ResolverHandle *rh,
                                             rh);
     return;
   }
+  if (GNUNET_OK == GNUNET_GNSRECORD_zkey_to_pkey (tld, &zone))
+  {
+    /* CNAME resolution continues relative to current domain */
+    if (0 == rh->name_resolution_pos)
+    {
+      GNUNET_asprintf (&res,
+                     "%.*s",
+                     strlen (cname) - (strlen (tld) + 1),
+                     cname);
+    }
+    else
+    {
+      GNUNET_asprintf (&res,
+                       "%.*s.%.*s",
+                       (int) rh->name_resolution_pos,
+                       rh->name,
+                       (int) strlen (cname) - (strlen(tld)+1),
+                       cname);
+    }
+    rh->name_resolution_pos = strlen (res);
+    GNUNET_free (rh->name);
+    rh->name = res;
+    ac = GNUNET_new (struct AuthorityChain);
+    ac->rh = rh;
+    ac->gns_authority = GNUNET_YES;
+    ac->authority_info.gns_authority = zone;
+    ac->label = resolver_lookup_get_next_label (rh);
+    /* add AC to tail */
+    GNUNET_CONTAINER_DLL_insert_tail (rh->ac_head,
+                                      rh->ac_tail,
+                                      ac);
+    rh->task_id = GNUNET_SCHEDULER_add_now (&recursive_resolution,
+                                            rh);
+    return;
+  }
+
   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
               "Got CNAME `%s' from GNS for `%s'\n",
               cname,