-licenses, dce, etc
[oweals/gnunet.git] / src / gns / gnunet-service-gns.c
index 733886f3a5a6a13c292bef3b0893be48f6436983..5ad0bcf76820c8bc173069a3723ea0a4396db453 100644 (file)
@@ -1,6 +1,6 @@
 /*
      This file is part of GNUnet.
-     (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
+     (C) 2009, 2010, 2011, 2012 Christian Grothoff (and other contributing authors)
 
      GNUnet is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published
 #include "gnunet_dht_service.h"
 #include "gnunet_namestore_service.h"
 #include "gnunet_gns_service.h"
+#include "gnunet_statistics_service.h"
 #include "block_gns.h"
 #include "gns.h"
+#include "gns_common.h"
 #include "gnunet-service-gns_resolver.h"
 #include "gnunet-service-gns_interceptor.h"
+#include "gnunet_protocols.h"
 
-/* FIXME move to proper header in include */
-#define GNUNET_MESSAGE_TYPE_GNS_LOOKUP 23
-#define GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT 24
-#define GNUNET_MESSAGE_TYPE_GNS_SHORTEN 25
-#define GNUNET_MESSAGE_TYPE_GNS_SHORTEN_RESULT 26
-#define GNUNET_MESSAGE_TYPE_GNS_GET_AUTH 27
-#define GNUNET_MESSAGE_TYPE_GNS_GET_AUTH_RESULT 28
+#define INITIAL_ZONE_ITERATION_INTERVAL GNUNET_TIME_UNIT_MILLISECONDS
+#define MINIMUM_ZONE_ITERATION_INTERVAL GNUNET_TIME_UNIT_SECONDS
+#define DEFAULT_RECORD_PUT_INTERVAL GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 4)
+#define LATE_ITERATION_SPEEDUP_FACTOR 2
 
 
 /**
  */
 struct ClientShortenHandle
 {
+
+  /* DLL */
+  struct ClientShortenHandle *next;
+
+  /* DLL */
+  struct ClientShortenHandle *prev;
+
   /* the requesting client that */
   struct GNUNET_SERVER_Client *client;
 
@@ -61,7 +68,25 @@ struct ClientShortenHandle
   enum GNUNET_GNS_RecordType type;
 
   /* name to shorten */
-  char* name;
+  char name[MAX_DNS_NAME_LENGTH];
+
+  /* name of private zone (relative to root) */
+  char private_zone_id[MAX_DNS_NAME_LENGTH];
+  
+  /* name of shorten zone (relative to root) */
+  char shorten_zone_id[MAX_DNS_NAME_LENGTH];
+  
+  /* root zone */
+  struct GNUNET_CRYPTO_ShortHashCode root_zone;
+
+  /* private zone */
+  struct GNUNET_CRYPTO_ShortHashCode private_zone;
+  
+  /* shorten zone */
+  struct GNUNET_CRYPTO_ShortHashCode shorten_zone;
+
+  /* Namestore lookup task */
+  struct GNUNET_NAMESTORE_QueueEntry *namestore_task;
 
 };
 
@@ -78,7 +103,7 @@ struct ClientGetAuthHandle
   uint64_t unique_id;
 
   /* name to lookup authority */
-  charname;
+  char *name;
 
 };
 
@@ -88,19 +113,30 @@ struct ClientGetAuthHandle
  */
 struct ClientLookupHandle
 {
+
   /* the requesting client that */
   struct GNUNET_SERVER_Client *client;
 
+  /* The zone we look up in */
+  struct GNUNET_CRYPTO_ShortHashCode zone;
+
+  /* Do we only want to lookup from local cache? */
+  int only_cached;
+
   /* request id */
   uint64_t unique_id;
 
   /* request type */
   enum GNUNET_GNS_RecordType type;
 
+  /* optional zone private key used for shorten */
+  struct GNUNET_CRYPTO_RsaPrivateKey *shorten_key;
+
   /* the name to look up */
-  char* name; //Needed?
+  char *name; 
 };
 
+
 /**
  * Our handle to the DHT
  */
@@ -109,23 +145,18 @@ static struct GNUNET_DHT_Handle *dht_handle;
 /**
  * Our zone's private key
  */
-struct GNUNET_CRYPTO_RsaPrivateKey *zone_key;
+static struct GNUNET_CRYPTO_RsaPrivateKey *zone_key;
 
 /**
  * Our handle to the namestore service
  * FIXME maybe need a second handle for iteration
  */
-struct GNUNET_NAMESTORE_Handle *namestore_handle;
+static struct GNUNET_NAMESTORE_Handle *namestore_handle;
 
 /**
  * Handle to iterate over our authoritative zone in namestore
  */
-struct GNUNET_NAMESTORE_ZoneIterator *namestore_iter;
-
-/**
- * The configuration the GNS service is running with
- */
-const struct GNUNET_CONFIGURATION_Handle *GNS_cfg;
+static struct GNUNET_NAMESTORE_ZoneIterator *namestore_iter;
 
 /**
  * Our notification context.
@@ -135,56 +166,53 @@ static struct GNUNET_SERVER_NotificationContext *nc;
 /**
  * Our zone hash
  */
-struct GNUNET_CRYPTO_ShortHashCode zone_hash;
+static struct GNUNET_CRYPTO_ShortHashCode zone_hash;
 
 /**
  * Useful for zone update for DHT put
  */
-static int num_public_records =  3600;
+static unsigned long long num_public_records;
+
+/**
+ * Last seen record count
+ */
+static unsigned long long last_num_public_records;
+
+/**
+ * FIXME!
+ */
+static struct GNUNET_TIME_Relative zone_iteration_interval;
 
 /* dht update interval FIXME define? */
-static struct GNUNET_TIME_Relative dht_update_interval;
+static struct GNUNET_TIME_Relative record_put_interval;
 
 /* zone update task */
-GNUNET_SCHEDULER_TaskIdentifier zone_update_taskid = GNUNET_SCHEDULER_NO_TASK;
+static GNUNET_SCHEDULER_TaskIdentifier zone_update_taskid;
 
 /* automatic pkey import for name shortening */
 static int auto_import_pkey;
 
+/* first zone iteration is specia */
+static int first_zone_iteration;
+
 /* lookup timeout */
 static struct GNUNET_TIME_Relative default_lookup_timeout;
 
-/**
- * Normalizes the name in old
- *
- * @param old the old name to normalize
- * @param new the buffer to write the new name to
- *
-static void
-normalize_name(const char* old, char** new)
-{
-  uint8_t *tmp_name;
-  size_t n_len;
+/* ipv6 support */
+static int v6_enabled;
 
-  tmp_name = u8_tolower ((uint8_t*)old, strlen ((char *) old),
-                       NULL, UNINORM_NFD, NULL, &n_len);
+/* ipv4 support */
+static int v4_enabled;
 
-  memcpy(*new, tmp_name, n_len);
-  (*new)[n_len] = '\0';
-  free(tmp_name);
-}
-*/
+/* Shorten DLL for cancelling NS requests */
+static struct ClientShortenHandle *csh_head;
 
+/* Shorten DLL for cancelling NS requests */
+static struct ClientShortenHandle *csh_tail;
+
+/* Statistics handle */
+static struct GNUNET_STATISTICS_Handle *statistics;
 
-/**
- * Continue shutdown
- */
-static void
-on_resolver_cleanup(void)
-{
-  GNUNET_NAMESTORE_disconnect(namestore_handle, 1);
-  GNUNET_DHT_disconnect(dht_handle);
-}
 
 /**
  * Task run during shutdown.
@@ -195,50 +223,65 @@ on_resolver_cleanup(void)
 static void
 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 {
+  struct ClientShortenHandle *csh_tmp;
 
   GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
              "Shutting down!");
-  /* Kill zone task for it may make the scheduler hang */
-  if (zone_update_taskid)
-    GNUNET_SCHEDULER_cancel(zone_update_taskid);
-  
-  GNUNET_SERVER_notification_context_destroy (nc);
-  
-  gns_interceptor_stop();
-  gns_resolver_cleanup(&on_resolver_cleanup);
-
+  while (NULL != (csh_tmp = csh_head))
+  {
+    GNUNET_CONTAINER_DLL_remove (csh_head, csh_tail, csh_tmp);
+    GNUNET_free(csh_tmp);
+  }
+  GNUNET_SERVER_notification_context_destroy (nc);  
+  gns_interceptor_stop ();
+  gns_resolver_cleanup ();
+  if (NULL != statistics)
+    GNUNET_STATISTICS_destroy (statistics, GNUNET_NO);
+  if (zone_update_taskid != GNUNET_SCHEDULER_NO_TASK)
+    GNUNET_SCHEDULER_cancel (zone_update_taskid);
+  if (NULL != namestore_iter)
+    GNUNET_NAMESTORE_zone_iteration_stop (namestore_iter);
+  GNUNET_NAMESTORE_disconnect(namestore_handle);
+  GNUNET_DHT_disconnect(dht_handle);
 }
 
 
 /**
- * Method called periodicattluy that triggers
- * iteration over root zone
+ * Method called periodically that triggers iteration over authoritative records
  *
  * @param cls closure
  * @param tc task context
  */
 static void
-update_zone_dht_next(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+update_zone_dht_next (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 {
-  GNUNET_NAMESTORE_zone_iterator_next(namestore_iter);
+  zone_update_taskid = GNUNET_SCHEDULER_NO_TASK;
+  GNUNET_NAMESTORE_zone_iterator_next (namestore_iter);
 }
 
+
 /**
  * Continuation for DHT put
  *
  * @param cls closure
- * @param tc task context
+ * @param success GNUNET_OK if the PUT was transmitted,
+ *                GNUNET_NO on timeout,
+ *                GNUNET_SYSERR on disconnect from service
+ *                after the PUT message was transmitted
+ *                (so we don't know if it was received or not)
  */
 static void
-record_dht_put(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+record_dht_put(void *cls, int success)
 {
-  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "put request transmitted\n");
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "put request transmitted\n");
 }
 
+
 /* prototype */
 static void
 update_zone_dht_start(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
 
+
 /**
  * Function used to put all records successively into the DHT.
  *
@@ -258,119 +301,161 @@ put_gns_record(void *cls,
                 unsigned int rd_count,
                 const struct GNUNET_NAMESTORE_RecordData *rd,
                 const struct GNUNET_CRYPTO_RsaSignature *signature)
-{
-  
+{  
   struct GNSNameRecordBlock *nrb;
-  struct GNUNET_CRYPTO_ShortHashCode name_hash;
-  GNUNET_HashCode xor_hash;
-  GNUNET_HashCode name_hash_double;
-  GNUNET_HashCode zone_hash_double;
-  struct GNUNET_CRYPTO_HashAsciiEncoded xor_hash_string;
+  struct GNUNET_CRYPTO_ShortHashCode zhash;
+  struct GNUNET_HashCode dht_key;
   uint32_t rd_payload_length;
   char* nrb_data = NULL;
   size_t namelen;
+  struct GNUNET_TIME_Relative next_put_interval; 
 
-  /* we're done */
   if (NULL == name)
   {
-    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
-               "Zone iteration finished. Rescheduling put in %ds\n",
-               GNUNET_GNS_DHT_MAX_UPDATE_INTERVAL);
-    zone_update_taskid = GNUNET_SCHEDULER_add_delayed (
-                                        GNUNET_TIME_relative_multiply(
-                                            GNUNET_TIME_UNIT_SECONDS,
-                                            GNUNET_GNS_DHT_MAX_UPDATE_INTERVAL
-                                            ),
-                                            &update_zone_dht_start,
-                                            NULL);
+    /* we're done */
+    namestore_iter = NULL;
+    last_num_public_records = num_public_records;
+    first_zone_iteration = GNUNET_NO;
+    if (0 == num_public_records)
+    {
+      /**
+       * If no records are known (startup) or none present
+       * we can safely set the interval to the value for a single
+       * record
+       */
+      zone_iteration_interval = GNUNET_TIME_relative_divide (record_put_interval,
+                                                             1);
+
+      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
+                 "No records in db.\n");
+    }
+    else
+    {
+      zone_iteration_interval = GNUNET_TIME_relative_divide (record_put_interval,
+                                                             num_public_records);
+    }
+    zone_iteration_interval = GNUNET_TIME_relative_max (MINIMUM_ZONE_ITERATION_INTERVAL,
+                                                        zone_iteration_interval);
+
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+               "Zone iteration finished. Adjusted zone iteration interval to %s\n",
+               GNUNET_STRINGS_relative_time_to_string (zone_iteration_interval, GNUNET_YES));
+    GNUNET_STATISTICS_set (statistics,
+                           "Current zone iteration interval (in ms)",
+                           zone_iteration_interval.rel_value,
+                           GNUNET_NO);
+    GNUNET_STATISTICS_update (statistics,
+                              "Number of zone iterations", 1, GNUNET_NO);
+    GNUNET_STATISTICS_set (statistics,
+                           "Number of public records in DHT",
+                           last_num_public_records,
+                           GNUNET_NO);
+    if (0 == num_public_records)
+      zone_update_taskid = GNUNET_SCHEDULER_add_delayed (zone_iteration_interval,
+                                                         &update_zone_dht_start,
+                                                         NULL);
+    else
+      zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_start, NULL);
     return;
   }
   
-  namelen = strlen(name) + 1;
-  
-  if (signature == NULL)
+  namelen = strlen (name) + 1;
+  if (0 == rd_count)
   {
-    GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
-               "No signature for %s record data provided! Skipping...\n",
-               name);
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+               "No records for name `%s'! Skipping.\n",
+               name);
+    zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_next,
+                                                   NULL);
+    return;
+  }
+  if (NULL == signature)
+  {
+    GNUNET_break (0);
     zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_next,
                                                    NULL);
     return;
-
   }
   
-  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
-             "Putting records for %s into the DHT\n", name);
-  
-  rd_payload_length = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
-  
-  nrb = GNUNET_malloc(rd_payload_length + namelen
-                      + sizeof(struct GNSNameRecordBlock));
-  
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+             "Putting records for `%s' into the DHT\n", name); 
+  rd_payload_length = GNUNET_NAMESTORE_records_get_size (rd_count, rd); 
+  nrb = GNUNET_malloc (rd_payload_length + namelen
+                      + sizeof (struct GNSNameRecordBlock));
   nrb->signature = *signature;
-  
   nrb->public_key = *key;
-
-  nrb->rd_count = htonl(rd_count);
-  
-  memcpy(&nrb[1], name, namelen);
-
-  nrb_data = (char*)&nrb[1];
+  nrb->rd_count = htonl (rd_count);
+  memcpy (&nrb[1], name, namelen);
+  nrb_data = (char *) &nrb[1];
   nrb_data += namelen;
-
   rd_payload_length += sizeof(struct GNSNameRecordBlock) + namelen;
-
+  GNUNET_CRYPTO_short_hash (key,
+                           sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
+                           &zhash);
   if (-1 == GNUNET_NAMESTORE_records_serialize (rd_count,
                                                 rd,
                                                 rd_payload_length,
                                                 nrb_data))
   {
-    GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
-               "Record serialization failed! Skipping...\n");
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+               _("Records for name `%s' in zone %s too large to fit into DHT"),
+               name,
+               GNUNET_short_h2s (&zhash));
     GNUNET_free(nrb);
     zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_next,
                                                    NULL);
     return;
   }
 
-
-  /*
-   * calculate DHT key: H(name) xor H(pubkey)
-   */
-  GNUNET_CRYPTO_short_hash(name, strlen(name), &name_hash);
-  GNUNET_CRYPTO_short_hash_double (&name_hash, &name_hash_double);
-  GNUNET_CRYPTO_short_hash_double (&zone_hash, &zone_hash_double);
-  GNUNET_CRYPTO_hash_xor(&zone_hash_double, &name_hash_double, &xor_hash);
-  GNUNET_CRYPTO_hash_to_enc (&xor_hash, &xor_hash_string);
-
-  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
-             "putting records for %s under key: %s with size %d\n",
-             name, (char*)&xor_hash_string, rd_payload_length);
-
-  GNUNET_DHT_put (dht_handle, &xor_hash,
-                  DHT_GNS_REPLICATION_LEVEL,
-                  GNUNET_DHT_RO_NONE,
-                  GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
-                  rd_payload_length,
-                  (char*)nrb,
-                  expiration,
-                  DHT_OPERATION_TIMEOUT,
-                  &record_dht_put,
-                  NULL); //cls for cont
+  GNUNET_GNS_get_key_for_record (name, &zhash, &dht_key);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+             "putting %u records from zone %s for `%s' under key: %s with size %u and timeout %s\n",
+             rd_count,
+             GNUNET_short_h2s (&zhash),
+             name, 
+             GNUNET_h2s (&dht_key), 
+             (unsigned int) rd_payload_length,
+             GNUNET_STRINGS_relative_time_to_string (DHT_OPERATION_TIMEOUT, GNUNET_YES));
   
-  num_public_records++;
-
-  /**
-   * Reschedule periodic put
-   */
-  zone_update_taskid = GNUNET_SCHEDULER_add_delayed (dht_update_interval,
-                                &update_zone_dht_next,
-                                NULL);
-
-  GNUNET_free(nrb);
-
+  GNUNET_STATISTICS_update (statistics,
+                            "Record bytes put into DHT", rd_payload_length, GNUNET_NO);
+
+  (void) GNUNET_DHT_put (dht_handle, &dht_key,
+                        DHT_GNS_REPLICATION_LEVEL,
+                        GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
+                        GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
+                        rd_payload_length,
+                        (char*)nrb,
+                        expiration,
+                        DHT_OPERATION_TIMEOUT,
+                        &record_dht_put,
+                        NULL); 
+  GNUNET_free (nrb);
+
+  num_public_records++;  
+  if ( (num_public_records > last_num_public_records)
+       && (GNUNET_NO == first_zone_iteration) )
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+               "Last record count was lower than current record count.  Reducing interval.\n");
+    zone_iteration_interval = GNUNET_TIME_relative_divide (record_put_interval,
+                                                           num_public_records);
+    next_put_interval = GNUNET_TIME_relative_divide (zone_iteration_interval,
+                                                    LATE_ITERATION_SPEEDUP_FACTOR);
+  }
+  else
+    next_put_interval = zone_iteration_interval;
+
+  GNUNET_STATISTICS_set (statistics,
+                        "Current zone iteration interval (ms)",
+                        next_put_interval.rel_value,
+                        GNUNET_NO); 
+  zone_update_taskid = GNUNET_SCHEDULER_add_delayed (next_put_interval,
+                                                    &update_zone_dht_next,
+                                                    NULL);
 }
 
+
 /**
  * Periodically iterate over our zone and store everything in dht
  *
@@ -380,40 +465,23 @@ put_gns_record(void *cls,
 static void
 update_zone_dht_start(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 {
-  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Scheduling DHT zone update!\n");
-  if (0 == num_public_records)
-  {
-    dht_update_interval = GNUNET_TIME_relative_multiply(
-                                            GNUNET_TIME_UNIT_SECONDS,
-                                            GNUNET_GNS_DHT_MAX_UPDATE_INTERVAL);
-    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
-               "No records in db. Adjusted DHT update interval to %ds\n",
-               GNUNET_GNS_DHT_MAX_UPDATE_INTERVAL);
-  }
-  else
-  {
-    
-    dht_update_interval = GNUNET_TIME_relative_multiply(
-                                                      GNUNET_TIME_UNIT_SECONDS,
-                                                     (3600/num_public_records));
-    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
-               "Adjusted DHT update interval to %ds!\n",
-               (3600/num_public_records));
-  }
+  zone_update_taskid = GNUNET_SCHEDULER_NO_TASK;
 
+  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Scheduling DHT zone update!\n");  
   /* start counting again */
   num_public_records = 0;
   namestore_iter = GNUNET_NAMESTORE_zone_iteration_start (namestore_handle,
-                                                 &zone_hash,
-                                                 GNUNET_NAMESTORE_RF_AUTHORITY,
-                                                 GNUNET_NAMESTORE_RF_PRIVATE,
-                                                 &put_gns_record,
-                                                 NULL);
+                                                         NULL, /* All zones */
+                                                         GNUNET_NAMESTORE_RF_AUTHORITY,
+                                                         GNUNET_NAMESTORE_RF_PRIVATE,
+                                                         &put_gns_record,
+                                                         NULL);
 }
 
 
 /* END DHT ZONE PROPAGATION */
 
+
 /**
  * Send shorten response back to client
  * 
@@ -421,107 +489,322 @@ update_zone_dht_start(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
  * @param name the shortened name result or NULL if cannot be shortened
  */
 static void
-send_shorten_response(void* cls, const char* name)
+send_shorten_response (void* cls, const char* name)
 {
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with %s\n",
-              "SHORTEN_RESULT", name);
+  struct ClientShortenHandle *csh = cls;
   struct GNUNET_GNS_ClientShortenResultMessage *rmsg;
-  struct ClientShortenHandle *csh = (struct ClientShortenHandle *)cls;
+  size_t name_len;
   
-  if (name == NULL)
-  {
-    name = "";
-  }
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with %s\n",
+              "SHORTEN_RESULT", name);
+  if (NULL == name)
+    name_len = 0;
+  else
+    name_len = strlen (name) + 1;
+  GNUNET_STATISTICS_update (statistics,
+                            "Name shorten results", 1, GNUNET_NO);
 
-  rmsg = GNUNET_malloc(sizeof(struct GNUNET_GNS_ClientShortenResultMessage)
-                       + strlen(name) + 1);
+  rmsg = GNUNET_malloc (sizeof (struct GNUNET_GNS_ClientShortenResultMessage) +
+                       name_len);
   
   rmsg->id = csh->unique_id;
   rmsg->header.type = htons(GNUNET_MESSAGE_TYPE_GNS_SHORTEN_RESULT);
   rmsg->header.size = 
     htons(sizeof(struct GNUNET_GNS_ClientShortenResultMessage) +
-          strlen(name) + 1);
+          name_len);
+  memcpy (&rmsg[1], name, name_len);
+  GNUNET_SERVER_notification_context_unicast (nc, csh->client,
+                                             &rmsg->header,
+                                             GNUNET_NO);
+  if (NULL != csh->namestore_task)
+    GNUNET_NAMESTORE_cancel (csh->namestore_task); 
+  GNUNET_free (rmsg);
+  GNUNET_free (csh);
+}
 
-  strcpy((char*)&rmsg[1], name);
 
-  GNUNET_SERVER_notification_context_unicast (nc, csh->client,
-                              (const struct GNUNET_MessageHeader *) rmsg,
-                              GNUNET_NO);
-  GNUNET_SERVER_receive_done (csh->client, GNUNET_OK);
+/**
+ * Lookup the zone infos and shorten name
+ *
+ * @param cls the client shorten handle
+ * @param key key of the zone
+ * @param expiration expiration of record
+ * @param name name found or null if no result
+ * @param rd_count number of records found
+ * @param rd record data
+ * @param signature
+ *
+ */
+static void
+process_shorten_in_private_zone_lookup (void *cls,
+                                       const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *key,
+                                       struct GNUNET_TIME_Absolute expiration,
+                                       const char *name,
+                                       unsigned int rd_count,
+                                       const struct GNUNET_NAMESTORE_RecordData *rd,
+                                       const struct GNUNET_CRYPTO_RsaSignature *signature)
+{
+  struct ClientShortenHandle *csh = cls;
+  struct GNUNET_CRYPTO_ShortHashCode *szone = &csh->shorten_zone;
+  struct GNUNET_CRYPTO_ShortHashCode *pzone = &csh->private_zone;
+
+  csh->namestore_task = NULL;
+  if (0 == strcmp (csh->private_zone_id, ""))
+    pzone = NULL;
   
-  GNUNET_free(rmsg);
-  GNUNET_free_non_null(csh->name);
-  GNUNET_free(csh);
+  if (rd_count == 0)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "No shorten zone in private zone!\n");
+    strcpy (csh->shorten_zone_id, "");
+    szone = NULL;
+  }
+  else
+  {
+    GNUNET_assert (rd_count == 1);
+
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "Shorten zone %s found in private zone %s\n",
+                name, csh->private_zone_id);
+
+    sprintf (csh->shorten_zone_id, "%s.%s", name, csh->private_zone_id);
+  }
+  
+  GNUNET_CONTAINER_DLL_remove (csh_head, csh_tail, csh);
+
+  gns_resolver_shorten_name (&csh->root_zone,
+                             pzone,
+                             szone,
+                             csh->name,
+                             csh->private_zone_id,
+                             csh->shorten_zone_id,
+                             &send_shorten_response, csh);
 
 }
 
+
+/**
+ * Lookup the zone infos and shorten name
+ *
+ * @param cls the shorten handle
+ * @param key key of the zone
+ * @param expiration expiration of record
+ * @param name name found or null if no result
+ * @param rd_count number of records found
+ * @param rd record data
+ * @param signature
+ *
+ */
+static void
+process_shorten_in_root_zone_lookup (void *cls,
+                      const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *key,
+                      struct GNUNET_TIME_Absolute expiration,
+                      const char *name,
+                      unsigned int rd_count,
+                      const struct GNUNET_NAMESTORE_RecordData *rd,
+                      const struct GNUNET_CRYPTO_RsaSignature *signature)
+{
+  struct ClientShortenHandle *csh = cls;
+  struct GNUNET_CRYPTO_ShortHashCode *szone = &csh->shorten_zone;
+  struct GNUNET_CRYPTO_ShortHashCode *pzone = &csh->private_zone;
+  
+  csh->namestore_task = NULL;
+  if (0 == strcmp (csh->private_zone_id, ""))
+    pzone = NULL;
+
+  if (rd_count == 0)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "No shorten zone in zone and no private zone!\n");
+
+    strcpy (csh->shorten_zone_id, "");
+
+    GNUNET_CONTAINER_DLL_remove (csh_head, csh_tail, csh);
+    szone = NULL;
+
+    gns_resolver_shorten_name (&csh->root_zone,
+                               pzone,
+                               szone,
+                               csh->name,
+                               csh->private_zone_id,
+                               csh->shorten_zone_id,
+                               &send_shorten_response, csh);
+    return;
+  }
+
+  GNUNET_assert (rd_count == 1);
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Private zone %s found in root zone\n", name);
+
+  strcpy (csh->private_zone_id, name);
+
+  csh->namestore_task = GNUNET_NAMESTORE_zone_to_name (namestore_handle,
+                                  pzone,
+                                  szone,
+                                  &process_shorten_in_private_zone_lookup,
+                                  csh);
+}
+
+
+/**
+ * Lookup the zone infos and shorten name
+ *
+ * @param cls the shorten handle
+ * @param key key of the zone
+ * @param expiration expiration of record
+ * @param name name found or null if no result
+ * @param rd_count number of records found
+ * @param rd record data
+ * @param signature
+ *
+ */
+static void
+process_private_in_root_zone_lookup (void *cls,
+                      const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *key,
+                      struct GNUNET_TIME_Absolute expiration,
+                      const char *name,
+                      unsigned int rd_count,
+                      const struct GNUNET_NAMESTORE_RecordData *rd,
+                      const struct GNUNET_CRYPTO_RsaSignature *signature)
+{
+  struct ClientShortenHandle *csh = cls;
+  csh->namestore_task = NULL;
+
+  if (rd_count == 0)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "No private zone in root zone\n");
+
+    strcpy (csh->private_zone_id, "");
+  
+    csh->namestore_task = GNUNET_NAMESTORE_zone_to_name (namestore_handle,
+                                  &csh->root_zone,
+                                  &csh->shorten_zone,
+                                  &process_shorten_in_root_zone_lookup,
+                                  csh);
+    return;
+  }
+
+  GNUNET_assert (rd_count == 1);
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Private zone %s found in root zone\n", name);
+
+  strcpy (csh->private_zone_id, name);
+
+  csh->namestore_task = GNUNET_NAMESTORE_zone_to_name (namestore_handle,
+                                  &csh->private_zone,
+                                  &csh->shorten_zone,
+                                  &process_shorten_in_private_zone_lookup,
+                                  csh);
+}
+
+
+/**
+ * Lookup the zone infos and shorten name
+ *
+ * @param csh the shorten handle
+ *
+ */
+static void
+start_shorten_name (struct ClientShortenHandle *csh)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "Looking for private zone name in root zone\n");
+
+  csh->namestore_task = GNUNET_NAMESTORE_zone_to_name (namestore_handle,
+                                  &csh->root_zone,
+                                  &csh->private_zone,
+                                  &process_private_in_root_zone_lookup,
+                                  csh);
+}
+
+
 /**
  * Handle a shorten message from the api
  *
- * @param cls the closure
+ * @param cls the closure (unused)
  * @param client the client
  * @param message the message
  */
-static void handle_shorten(void *cls,
-                           struct GNUNET_SERVER_Client * client,
-                           const struct GNUNET_MessageHeader * message)
+static void 
+handle_shorten (void *cls,
+               struct GNUNET_SERVER_Client * client,
+               const struct GNUNET_MessageHeader * message)
 {
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "SHORTEN");
-
-  size_t msg_size = 0;
+  uint16_t msg_size;
+  const struct GNUNET_GNS_ClientShortenMessage *sh_msg;
   struct ClientShortenHandle *csh;
+  const char *utf_in;
   char name[MAX_DNS_NAME_LENGTH];
   char* nameptr = name;
 
-  if (ntohs (message->size) < sizeof (struct GNUNET_GNS_ClientShortenMessage))
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "SHORTEN");
+  msg_size = ntohs (message->size);
+  if (msg_size < sizeof (struct GNUNET_GNS_ClientShortenMessage))
   {
-    GNUNET_break_op (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
-
-  GNUNET_SERVER_notification_context_add (nc, client);
-
-  struct GNUNET_GNS_ClientShortenMessage *sh_msg =
-    (struct GNUNET_GNS_ClientShortenMessage *) message;
-  
-  msg_size = ntohs(message->size);
-
-  if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
+  sh_msg = (const struct GNUNET_GNS_ClientShortenMessage *) message;
+  utf_in = (const char *) &sh_msg[1];
+  if ('\0' != utf_in[msg_size - sizeof (struct GNUNET_GNS_ClientShortenMessage) - 1])
   {
-    GNUNET_break_op (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
-
-  csh = GNUNET_malloc(sizeof(struct ClientShortenHandle));
+  csh = GNUNET_malloc (sizeof (struct ClientShortenHandle));
   csh->client = client;
   csh->unique_id = sh_msg->id;
-  
-  GNUNET_STRINGS_utf8_tolower((char*)&sh_msg[1], &nameptr);
-
-  if (strlen (name) < strlen(GNUNET_GNS_TLD)) {
-    csh->name = NULL;
+  GNUNET_CONTAINER_DLL_insert (csh_head, csh_tail, csh); 
+  GNUNET_STRINGS_utf8_tolower (utf_in, &nameptr);
+  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+               "SHORTEN: Converted `%s' to `%s'\n", 
+            utf_in, 
+            nameptr);
+  GNUNET_SERVER_notification_context_add (nc, client);  
+  if (strlen (name) < strlen (GNUNET_GNS_TLD)) 
+  {
+    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+               "SHORTEN: %s is too short\n", name);
+    GNUNET_CONTAINER_DLL_remove (csh_head, csh_tail, csh);
     send_shorten_response(csh, name);
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
-  
-  if (!is_gnunet_tld(name) && !is_zkey_tld(name))
+  if (strlen (name) > MAX_DNS_NAME_LENGTH) 
+  {
+    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+               "SHORTEN: %s is too long\n", name);
+    GNUNET_CONTAINER_DLL_remove (csh_head, csh_tail, csh);
+    send_shorten_response(csh, name);
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    return;
+  }  
+  if ( (! is_gnunet_tld (name)) && 
+       (! is_zkey_tld (name)) )
   {
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                 "%s is not our domain. Returning\n", name);
-    csh->name = NULL;
-    send_shorten_response(csh, name);
+    GNUNET_CONTAINER_DLL_remove (csh_head, csh_tail, csh);
+    send_shorten_response (csh, name);
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
-  
-  /* Start shortening */
-  if (GNUNET_YES == auto_import_pkey)
-    gns_resolver_shorten_name(zone_hash, name, zone_key,
-                              &send_shorten_response, csh);
+  csh->shorten_zone = sh_msg->shorten_zone;
+  csh->private_zone = sh_msg->private_zone;
+  strcpy (csh->name, name);  
+  if (1 == ntohl(sh_msg->use_default_zone))
+    csh->root_zone = zone_hash; //Default zone
   else
-    gns_resolver_shorten_name(zone_hash, name, NULL,
-                              &send_shorten_response, csh);
+    csh->root_zone = sh_msg->zone;
+  start_shorten_name (csh);
+  GNUNET_STATISTICS_update (statistics,
+                            "Name shorten attempts", 1, GNUNET_NO);
+  GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
 
@@ -531,18 +814,21 @@ static void handle_shorten(void *cls,
  * @param cls the closure containing a client get auth handle
  * @param name the shortened name result or NULL if cannot be shortened
  */
-static void
+static void 
 send_get_auth_response(void *cls, const char* name)
 {
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with %s\n",
-              "GET_AUTH_RESULT", name);
+  struct ClientGetAuthHandle *cah = cls;
   struct GNUNET_GNS_ClientGetAuthResultMessage *rmsg;
-  struct ClientGetAuthHandle *cah = (struct ClientGetAuthHandle *)cls;
   
-  if (name == NULL)
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message with %s\n",
+              "GET_AUTH_RESULT", name);
+  if (name != NULL)
   {
-    name = "";
-  }
+    GNUNET_STATISTICS_update (statistics,
+                              "Authorities resolved", 1, GNUNET_NO);
+  }  
+  if (name == NULL)  
+    name = "";  
 
   rmsg = GNUNET_malloc(sizeof(struct GNUNET_GNS_ClientGetAuthResultMessage)
                        + strlen(name) + 1);
@@ -552,22 +838,16 @@ send_get_auth_response(void *cls, const char* name)
   rmsg->header.size = 
     htons(sizeof(struct GNUNET_GNS_ClientGetAuthResultMessage) +
           strlen(name) + 1);
-
-  strcpy((char*)&rmsg[1], name);
+  strcpy ((char*)&rmsg[1], name);
 
   GNUNET_SERVER_notification_context_unicast (nc, cah->client,
-                              (const struct GNUNET_MessageHeader *) rmsg,
-                              GNUNET_NO);
+                                             &rmsg->header,
+                                             GNUNET_NO);
   GNUNET_SERVER_receive_done (cah->client, GNUNET_OK);
   
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up handles...\n");
-
   GNUNET_free(rmsg);
   GNUNET_free_non_null(cah->name);
-  GNUNET_free(cah);
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "done.\n");
-
+  GNUNET_free(cah);  
 }
 
 
@@ -578,85 +858,90 @@ send_get_auth_response(void *cls, const char* name)
  * @param client the client
  * @param message the message
  */
-static void handle_get_authority(void *cls,
-                           struct GNUNET_SERVER_Client * client,
-                           const struct GNUNET_MessageHeader * message)
+static void 
+handle_get_authority (void *cls,
+                     struct GNUNET_SERVER_Client * client,
+                     const struct GNUNET_MessageHeader * message)
 {
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "GET_AUTH");
-
-  size_t msg_size = 0;
+  uint16_t msg_size;
+  const struct GNUNET_GNS_ClientGetAuthMessage *sh_msg;
   struct ClientGetAuthHandle *cah;
+  const char *utf_in;
   char name[MAX_DNS_NAME_LENGTH];
   char* nameptr = name;
 
-  if (ntohs (message->size) < sizeof (struct GNUNET_GNS_ClientGetAuthMessage))
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "GET_AUTH");
+  msg_size = ntohs(message->size);
+  if (msg_size < sizeof (struct GNUNET_GNS_ClientGetAuthMessage))
   {
-    GNUNET_break_op (0);
+    GNUNET_break (0);
     GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
-
   GNUNET_SERVER_notification_context_add (nc, client);
 
-  struct GNUNET_GNS_ClientGetAuthMessage *sh_msg =
-    (struct GNUNET_GNS_ClientGetAuthMessage *) message;
-  
-  msg_size = ntohs(message->size);
-
-  if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
+  sh_msg = (const struct GNUNET_GNS_ClientGetAuthMessage *) message;
+  utf_in = (const char *) &sh_msg[1];
+  if ('\0' != utf_in[msg_size - sizeof (struct GNUNET_GNS_ClientGetAuthMessage) - 1])
   {
-    GNUNET_break_op (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
-  }
-  
-  GNUNET_STRINGS_utf8_tolower((char*)&sh_msg[1], &nameptr);
-
-
+  }  
+  GNUNET_STRINGS_utf8_tolower(utf_in, &nameptr);
   cah = GNUNET_malloc(sizeof(struct ClientGetAuthHandle));
   cah->client = client;
   cah->unique_id = sh_msg->id;
-
-  if (strlen(name) < strlen(GNUNET_GNS_TLD))
+  if (strlen (name) < strlen(GNUNET_GNS_TLD))
   {
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "%s is too short. Returning\n", name);
+                "GET_AUTH: `%s' is too short. Returning\n", name);
     cah->name = NULL;
     send_get_auth_response(cah, name);
     return;
-  }
-
-  if (strcmp(name+strlen(name)-strlen(GNUNET_GNS_TLD),
-             GNUNET_GNS_TLD) != 0)
+  }  
+  if (strlen (name) > MAX_DNS_NAME_LENGTH) 
+  {
+    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+               "GET_AUTH: `%s' is too long", name);
+    cah->name = NULL;
+    send_get_auth_response(cah, name);
+    return;
+  }  
+  if (0 != strcmp (name + strlen (name) - strlen(GNUNET_GNS_TLD),
+                  GNUNET_GNS_TLD))
   {
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "%s is not our domain. Returning\n", name);
+                "GET_AUTH: %s is not our domain. Returning\n", name);
     cah->name = NULL;
     send_get_auth_response(cah, name);
     return;
   }
 
-  if (strcmp(name, GNUNET_GNS_TLD) == 0)
+  if (0 == strcmp(name, GNUNET_GNS_TLD))
   {
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "%s is us. Returning\n", name);
+                "GET_AUTH: %s is us. Returning\n", name);
     cah->name = NULL;
     send_get_auth_response(cah, name);
     return;
-  }
-  
-  cah->name = GNUNET_malloc(strlen(name)
-                            - strlen(GNUNET_GNS_TLD) + 1);
-  memset(cah->name, 0,
-         strlen(name)-strlen(GNUNET_GNS_TLD) + 1);
-  memcpy(cah->name, name,
-         strlen(name)-strlen(GNUNET_GNS_TLD));
+  }  
+  cah->name = GNUNET_malloc(strlen (name)
+                            - strlen (GNUNET_GNS_TLD) + 1);
+  memset (cah->name, 0,
+         strlen (name) - strlen (GNUNET_GNS_TLD) + 1);
+  memcpy (cah->name, name,
+         strlen (name) - strlen(GNUNET_GNS_TLD));
 
   /* Start delegation resolution in our namestore */
-  gns_resolver_get_authority(zone_hash, name, &send_get_auth_response, cah);
+  gns_resolver_get_authority(zone_hash, zone_hash, name, &send_get_auth_response, cah);
+
+  GNUNET_STATISTICS_update (statistics,
+                            "Authority lookup attempts", 1, GNUNET_NO);
 }
 
 
+
 /**
  * Reply to client with the result from our lookup.
  *
@@ -684,7 +969,7 @@ send_lookup_response(void* cls,
   rmsg->header.type = htons(GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT);
   rmsg->header.size = 
     htons(len+sizeof(struct GNUNET_GNS_ClientLookupResultMessage));
-
+  
   GNUNET_NAMESTORE_records_serialize (rd_count, rd, len, (char*)&rmsg[1]);
   
   GNUNET_SERVER_notification_context_unicast (nc, clh->client,
@@ -694,8 +979,21 @@ send_lookup_response(void* cls,
   
   GNUNET_free(rmsg);
   GNUNET_free(clh->name);
+  
+  if (NULL != clh->shorten_key)
+    GNUNET_CRYPTO_rsa_key_free (clh->shorten_key);
+
   GNUNET_free(clh);
 
+  GNUNET_STATISTICS_update (statistics,
+                            "Completed lookups", 1, GNUNET_NO);
+
+  if (rd != NULL)
+  {
+    GNUNET_STATISTICS_update (statistics,
+                              "Records resolved", rd_count, GNUNET_NO);
+  }
+
 }
 
 
@@ -711,61 +1009,141 @@ handle_lookup(void *cls,
               struct GNUNET_SERVER_Client * client,
               const struct GNUNET_MessageHeader * message)
 {
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "LOOKUP");
-
-  size_t msg_size = 0;
+  uint16_t msg_size;
+  const struct GNUNET_GNS_ClientLookupMessage *sh_msg;
   size_t namelen;
   char name[MAX_DNS_NAME_LENGTH];
   struct ClientLookupHandle *clh;
   char* nameptr = name;
+  const char *utf_in;
+  int only_cached;
+  struct GNUNET_CRYPTO_RsaPrivateKey *key;
+  struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded *pkey;
+  char* tmp_pkey;
 
-  if (ntohs (message->size) < sizeof (struct GNUNET_GNS_ClientLookupMessage))
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "LOOKUP");
+  msg_size = ntohs(message->size);
+  if (msg_size < sizeof (struct GNUNET_GNS_ClientLookupMessage))
   {
-    GNUNET_break_op (0);
+    GNUNET_break (0);
     GNUNET_SERVER_receive_done (client, GNUNET_OK);
     return;
   }
-
+  sh_msg = (const struct GNUNET_GNS_ClientLookupMessage *) message;
   GNUNET_SERVER_notification_context_add (nc, client);
-
-  struct GNUNET_GNS_ClientLookupMessage *sh_msg =
-    (struct GNUNET_GNS_ClientLookupMessage *) message;
-  
-  msg_size = ntohs(message->size);
-
-  if (msg_size > GNUNET_SERVER_MAX_MESSAGE_SIZE)
+  if (GNUNET_YES == ntohl (sh_msg->have_key))
   {
-    GNUNET_break_op (0);
-    GNUNET_SERVER_receive_done (client, GNUNET_OK);
-    return;
+    pkey = (struct GNUNET_CRYPTO_RsaPrivateKeyBinaryEncoded *)&sh_msg[1];
+    tmp_pkey = (char*)&sh_msg[1];
+    key = GNUNET_CRYPTO_rsa_decode_key (tmp_pkey, ntohs(pkey->len));
+    GNUNET_STRINGS_utf8_tolower(&tmp_pkey[ntohs(pkey->len)], &nameptr);
   }
-  
-  GNUNET_STRINGS_utf8_tolower((char*)&sh_msg[1], &nameptr);
-  namelen = strlen(name)+1;
-  clh = GNUNET_malloc(sizeof(struct ClientLookupHandle));
+  else
+  {
+    key = NULL;
+    utf_in = (const char *) &sh_msg[1];
+    if ('\0' != utf_in[msg_size - sizeof (struct GNUNET_GNS_ClientLookupMessage) - 1])
+    {
+      GNUNET_break (0);
+      GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+      return;
+    }  
+    GNUNET_STRINGS_utf8_tolower(utf_in, &nameptr);
+  }  
+  namelen = strlen (name)+1;
+  clh = GNUNET_malloc (sizeof (struct ClientLookupHandle));
+  memset (clh, 0, sizeof (struct ClientLookupHandle));
   clh->client = client;
   clh->name = GNUNET_malloc(namelen);
   strcpy(clh->name, name);
   clh->unique_id = sh_msg->id;
   clh->type = ntohl(sh_msg->type);
+  clh->shorten_key = key;
+
+  only_cached = ntohl(sh_msg->only_cached);
+  
+  if (strlen (name) > MAX_DNS_NAME_LENGTH) {
+    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+               "LOOKUP: %s is too long", name);
+    clh->name = NULL;
+    send_lookup_response(clh, 0, NULL);
+    return;
+  }
+
+  if ((clh->type == GNUNET_GNS_RECORD_A) &&
+      (GNUNET_OK != v4_enabled))
+  {
+    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+               "LOOKUP: Query for A record but AF_INET not supported!");
+    clh->name = NULL;
+    send_lookup_response(clh, 0, NULL);
+    return;
+  }
+  
+  if ((clh->type == GNUNET_GNS_RECORD_AAAA) &&
+      (GNUNET_OK != v6_enabled))
+  {
+    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+               "LOOKUP: Query for AAAA record but AF_INET6 not supported!");
+    clh->name = NULL;
+    send_lookup_response(clh, 0, NULL);
+    return;
+  }
+  
+  if (1 == ntohl(sh_msg->use_default_zone))
+    clh->zone = zone_hash; //Default zone
+  else
+    clh->zone = sh_msg->zone;
   
   if (GNUNET_YES == auto_import_pkey)
   {
-    gns_resolver_lookup_record(zone_hash, clh->type, name,
-                               zone_key,
-                               default_lookup_timeout,
-                               &send_lookup_response, clh);
+    gns_resolver_lookup_record (clh->zone, clh->zone, clh->type, clh->name,
+                                clh->shorten_key,
+                                default_lookup_timeout,
+                                clh->only_cached,
+                                &send_lookup_response, clh);  
   }
   else
   {
-    gns_resolver_lookup_record(zone_hash, clh->type, name,
-                               NULL,
-                               default_lookup_timeout,
-                               &send_lookup_response, clh);
+    gns_resolver_lookup_record (clh->zone, clh->zone, clh->type, name,
+                                NULL,
+                                default_lookup_timeout,
+                                only_cached,
+                                &send_lookup_response, clh);
   }
+
+  GNUNET_STATISTICS_update (statistics,
+                            "Record lookup attempts", 1, GNUNET_NO);
 }
 
 
+/**
+ * Test if the given AF is supported by this system.
+ *
+ * @param af to test
+ * @return GNUNET_OK if the AF is supported
+ */
+static int
+test_af (int af)
+{
+  int s;
+
+  s = socket (af, SOCK_STREAM, 0);
+  if (-1 == s)
+  {
+    if (EAFNOSUPPORT == errno)
+      return GNUNET_NO;
+    fprintf (stderr, "Failed to create test socket: %s\n", STRERROR (errno));
+    return GNUNET_SYSERR;
+  }
+#if WINDOWS
+  closesocket (s);
+#else
+  close (s);
+#endif
+  return GNUNET_OK;
+}
+
 
 /**
  * Process GNS requests.
@@ -778,13 +1156,11 @@ static void
 run (void *cls, struct GNUNET_SERVER_Handle *server,
      const struct GNUNET_CONFIGURATION_Handle *c)
 {
-  
-  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Initializing GNS\n");
-  
   char* keyfile;
   struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
   unsigned long long max_parallel_bg_queries = 0;
   unsigned long long default_lookup_timeout_secs = 0;
+  int ignore_pending = GNUNET_NO;
 
   static const struct GNUNET_SERVER_MessageHandler handlers[] = {
     {&handle_shorten, NULL, GNUNET_MESSAGE_TYPE_GNS_SHORTEN, 0},
@@ -792,12 +1168,15 @@ run (void *cls, struct GNUNET_SERVER_Handle *server,
     {&handle_get_authority, NULL, GNUNET_MESSAGE_TYPE_GNS_GET_AUTH, 0}
   };
 
+  v6_enabled = test_af (AF_INET6);
+  v4_enabled = test_af (AF_INET);
+
   if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (c, "gns",
                                              "ZONEKEY", &keyfile))
   {
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "No private key for root zone specified!\n");
-    GNUNET_SCHEDULER_shutdown(0);
+    GNUNET_SCHEDULER_shutdown ();
     return;
   }
 
@@ -811,31 +1190,16 @@ run (void *cls, struct GNUNET_SERVER_Handle *server,
                      sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
                      &zone_hash);
   GNUNET_free(keyfile);
-  
-  /**
-   * handle to our local namestore
-   */
-  namestore_handle = GNUNET_NAMESTORE_connect(c);
-
+  namestore_handle = GNUNET_NAMESTORE_connect (c);
   if (NULL == namestore_handle)
   {
-    //FIXME do error handling;
-    GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
-               "Failed to connect to the namestore!\n");
-    GNUNET_SCHEDULER_shutdown(0);
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+               _("Failed to connect to the namestore!\n"));
+    GNUNET_SCHEDULER_shutdown ();
     return;
   }
   
-  /**
-   * handle to the dht
-   */
-  dht_handle = GNUNET_DHT_connect(c, 1); //FIXME get ht_len from cfg
-
-  if (NULL == dht_handle)
-  {
-    GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Could not connect to DHT!\n");
-  }
-
+  auto_import_pkey = GNUNET_NO;
   if (GNUNET_YES ==
       GNUNET_CONFIGURATION_get_value_yesno (c, "gns",
                                             "AUTO_IMPORT_PKEY"))
@@ -846,30 +1210,66 @@ run (void *cls, struct GNUNET_SERVER_Handle *server,
 
   }
 
+  zone_iteration_interval = INITIAL_ZONE_ITERATION_INTERVAL;
+
+  record_put_interval = DEFAULT_RECORD_PUT_INTERVAL;
+
+  if (GNUNET_OK ==
+      GNUNET_CONFIGURATION_get_value_time (c, "gns",
+                                             "RECORD_PUT_INTERVAL",
+                                             &record_put_interval))
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+               "Record put interval: %s\n",
+               GNUNET_STRINGS_relative_time_to_string (record_put_interval, GNUNET_YES));
+  }
+
   if (GNUNET_OK ==
-      GNUNET_CONFIGURATION_get_value_number(c, "gns",
+      GNUNET_CONFIGURATION_get_value_number (c, "gns",
                                             "MAX_PARALLEL_BACKGROUND_QUERIES",
                                             &max_parallel_bg_queries))
   {
     GNUNET_log(GNUNET_ERROR_TYPE_INFO,
-               "Number of allowed parallel background queries: %d\n",
+               "Number of allowed parallel background queries: %llu\n",
                max_parallel_bg_queries);
   }
 
+  if (GNUNET_YES ==
+      GNUNET_CONFIGURATION_get_value_yesno (c, "gns",
+                                            "AUTO_IMPORT_CONFIRMATION_REQ"))
+  {
+    GNUNET_log(GNUNET_ERROR_TYPE_INFO,
+               "Auto import requires user confirmation\n");
+    ignore_pending = GNUNET_YES;
+  }
+
   if (GNUNET_OK ==
       GNUNET_CONFIGURATION_get_value_number(c, "gns",
                                             "DEFAULT_LOOKUP_TIMEOUT",
                                             &default_lookup_timeout_secs))
   {
     GNUNET_log(GNUNET_ERROR_TYPE_INFO,
-               "Default lookup timeout: %ds\n", default_lookup_timeout_secs);
+               "Default lookup timeout: %llus\n", default_lookup_timeout_secs);
     default_lookup_timeout = GNUNET_TIME_relative_multiply(
                                             GNUNET_TIME_UNIT_SECONDS,
                                             default_lookup_timeout_secs);
   }
   
-  if (gns_resolver_init(namestore_handle, dht_handle, zone_hash,
-                        max_parallel_bg_queries)
+  /**
+   * handle to the dht
+   */
+  dht_handle = GNUNET_DHT_connect(c,
+                       //max_parallel_bg_queries); //FIXME get ht_len from cfg
+                       1024);
+
+  if (NULL == dht_handle)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not connect to DHT!\n");
+  }
+  
+  if (gns_resolver_init(namestore_handle, dht_handle, zone_hash, c,
+                        max_parallel_bg_queries,
+                        ignore_pending)
       == GNUNET_SYSERR)
   {
     GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
@@ -891,15 +1291,12 @@ run (void *cls, struct GNUNET_SERVER_Handle *server,
     }
   }
   
-  //put_some_records(); //FIXME for testing
-  
   /**
    * Schedule periodic put
    * for our records
    * We have roughly an hour for all records;
    */
-  dht_update_interval = GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
-                                                      1);
+  first_zone_iteration = GNUNET_YES;
   zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_start, NULL);
 
   GNUNET_SERVER_add_handlers (server, handlers);
@@ -909,6 +1306,8 @@ run (void *cls, struct GNUNET_SERVER_Handle *server,
   //                                 &client_disconnect_notification,
   //                                 NULL);
 
+  statistics = GNUNET_STATISTICS_create ("gns", c);
+
   nc = GNUNET_SERVER_notification_context_create (server, 1);
 
   GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,