C++ GNUNET_h2s函数代码示例

static void
key_iterator (void *cls, const struct GNUNET_HashCode *key,
	      const char *proof,
              int accepting, unsigned int num_edges,
              const struct REGEX_BLOCK_Edge *edges)
{
  unsigned int i;
  struct IteratorContext *ctx = cls;
  char *out_str;
  char *state_id = GNUNET_strdup (GNUNET_h2s (key));

  GNUNET_assert (NULL != proof);
  if (GNUNET_YES == ctx->should_save_graph)
  {
    if (GNUNET_YES == accepting)
      GNUNET_asprintf (&out_str, "\"%s\" [shape=doublecircle]\n", state_id);
    else
      GNUNET_asprintf (&out_str, "\"%s\" [shape=circle]\n", state_id);
    fwrite (out_str, strlen (out_str), 1, ctx->graph_filep);
    GNUNET_free (out_str);

    for (i = 0; i < num_edges; i++)
    {
      transition_counter++;
      GNUNET_asprintf (&out_str, "\"%s\" -> \"%s\" [label = \"%s (%s)\"]\n",
                       state_id, GNUNET_h2s (&edges[i].destination),
                       edges[i].label, proof);
      fwrite (out_str, strlen (out_str), 1, ctx->graph_filep);

      GNUNET_free (out_str);
    }
  }
  else
  {
    for (i = 0; i < num_edges; i++)
      transition_counter++;
  }

  for (i = 0; i < ctx->string_count; i++)
  {
    if (0 == strcmp (proof, ctx->strings[i]))
      ctx->match_count++;
  }

  if (GNUNET_OK != REGEX_BLOCK_check_proof (proof, strlen (proof), key))
  {
    ctx->error++;
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Proof check failed: proof: %s key: %s\n", proof, state_id);
  }
  GNUNET_free (state_id);
}

/**
 * Process a given reply that might match the given
 * request.
 *
 * @param cls the 'struct GNUNET_DHT_ClientResultMessage'
 * @param key query of the request
 * @param value the 'struct GNUNET_DHT_RouteHandle' of a request matching the same key
 * @return GNUNET_YES to continue to iterate over all results,
 *         GNUNET_NO if the reply is malformed
 */
static int
process_reply (void *cls, const GNUNET_HashCode * key, void *value)
{
  const struct GNUNET_DHT_ClientResultMessage *dht_msg = cls;
  struct GNUNET_DHT_GetHandle *get_handle = value;
  const struct GNUNET_PeerIdentity *put_path;
  const struct GNUNET_PeerIdentity *get_path;
  uint32_t put_path_length;
  uint32_t get_path_length;
  size_t data_length;
  size_t msize;
  size_t meta_length;
  const void *data;

  if (dht_msg->unique_id != get_handle->unique_id)
  {
    /* UID mismatch */
    LOG (GNUNET_ERROR_TYPE_DEBUG,
         "Ignoring reply for %s: UID mismatch: %llu/%llu\n", GNUNET_h2s (key),
         dht_msg->unique_id, get_handle->unique_id);
    return GNUNET_YES;
  }
  msize = ntohs (dht_msg->header.size);
  put_path_length = ntohl (dht_msg->put_path_length);
  get_path_length = ntohl (dht_msg->get_path_length);
  meta_length =
      sizeof (struct GNUNET_DHT_ClientResultMessage) +
      sizeof (struct GNUNET_PeerIdentity) * (get_path_length + put_path_length);
  if ((msize < meta_length) ||
      (get_path_length >
       GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) ||
      (put_path_length >
       GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)))
  {
    GNUNET_break (0);
    return GNUNET_NO;
  }
  data_length = msize - meta_length;
  LOG (GNUNET_ERROR_TYPE_DEBUG, "Giving %u byte reply for %s to application\n",
       (unsigned int) data_length, GNUNET_h2s (key));
  put_path = (const struct GNUNET_PeerIdentity *) &dht_msg[1];
  get_path = &put_path[put_path_length];
  data = &get_path[get_path_length];
  get_handle->iter (get_handle->iter_cls,
                    GNUNET_TIME_absolute_ntoh (dht_msg->expiration), key,
                    get_path, get_path_length, put_path, put_path_length,
                    ntohl (dht_msg->type), data_length, data);
  return GNUNET_YES;
}

/**
 * Get a result for a particular key from the datastore.  The processor
 * will only be called once.
 *
 * @param h handle to the datastore
 * @param offset offset of the result (modulo num-results); set to
 *               a random 64-bit value initially; then increment by
 *               one each time; detect that all results have been found by uid
 *               being again the first uid ever returned.
 * @param key maybe NULL (to match all entries)
 * @param type desired type, 0 for any
 * @param queue_priority ranking of this request in the priority queue
 * @param max_queue_size at what queue size should this request be dropped
 *        (if other requests of higher priority are in the queue)
 * @param timeout how long to wait at most for a response
 * @param proc function to call on each matching value;
 *        will be called once with a NULL value at the end
 * @param proc_cls closure for proc
 * @return NULL if the entry was not queued, otherwise a handle that can be used to
 *         cancel
 */
struct GNUNET_DATASTORE_QueueEntry *
GNUNET_DATASTORE_get_key (struct GNUNET_DATASTORE_Handle *h, uint64_t offset,
                          const struct GNUNET_HashCode * key,
                          enum GNUNET_BLOCK_Type type,
                          unsigned int queue_priority,
                          unsigned int max_queue_size,
                          struct GNUNET_TIME_Relative timeout,
                          GNUNET_DATASTORE_DatumProcessor proc, void *proc_cls)
{
  struct GNUNET_DATASTORE_QueueEntry *qe;
  struct GetMessage *gm;
  union QueueContext qc;

  GNUNET_assert (NULL != proc);
  LOG (GNUNET_ERROR_TYPE_DEBUG,
       "Asked to look for data of type %u under key `%s'\n",
       (unsigned int) type, GNUNET_h2s (key));
  qc.rc.proc = proc;
  qc.rc.proc_cls = proc_cls;
  qe = make_queue_entry (h, sizeof (struct GetMessage), queue_priority,
                         max_queue_size, timeout, &process_result_message, &qc);
  if (qe == NULL)
  {
    LOG (GNUNET_ERROR_TYPE_DEBUG, "Could not queue request for `%s'\n",
         GNUNET_h2s (key));
    return NULL;
  }
#if INSANE_STATISTICS
  GNUNET_STATISTICS_update (h->stats, gettext_noop ("# GET requests executed"),
                            1, GNUNET_NO);
#endif
  gm = (struct GetMessage *) &qe[1];
  gm->header.type = htons (GNUNET_MESSAGE_TYPE_DATASTORE_GET);
  gm->type = htonl (type);
  gm->offset = GNUNET_htonll (offset);
  if (key != NULL)
  {
    gm->header.size = htons (sizeof (struct GetMessage));
    gm->key = *key;
  }
  else
  {
    gm->header.size =
        htons (sizeof (struct GetMessage) - sizeof (struct GNUNET_HashCode));
  }
  process_queue (h);
  return qe;
}

/**
 * Store content in DHT.
 *
 * @param cls closure
 * @param key key for the content
 * @param size number of bytes in data
 * @param data content stored
 * @param type type of the content
 * @param priority priority of the content
 * @param anonymity anonymity-level for the content
 * @param expiration expiration time for the content
 * @param uid unique identifier for the datum;
 *        maybe 0 if no unique identifier is available
 */
static void
process_dht_put_content (void *cls,
			 const struct GNUNET_HashCode * key,
			 size_t size,
                         const void *data,
			 enum GNUNET_BLOCK_Type type,
                         uint32_t priority, uint32_t anonymity,
                         struct GNUNET_TIME_Absolute expiration, uint64_t uid)
{
  struct PutOperator *po = cls;

  po->dht_qe = NULL;
  if (key == NULL)
  {
    po->zero_anonymity_count_estimate = po->current_offset - 1;
    po->current_offset = 0;
    po->dht_task = GNUNET_SCHEDULER_add_now (&delay_dht_put_task, po);
    return;
  }
  po->zero_anonymity_count_estimate =
      GNUNET_MAX (po->current_offset, po->zero_anonymity_count_estimate);
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Retrieved block `%s' of type %u for DHT PUT\n", GNUNET_h2s (key),
              type);
  po->dht_put = GNUNET_DHT_put (GSF_dht, key, DEFAULT_PUT_REPLICATION,
				GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE, type, size, data,
				expiration, GNUNET_TIME_UNIT_FOREVER_REL,
				&delay_dht_put_blocks, po);
}

/**
 * Handler for port close requests.
 *
 * @param cls Identification of the client.
 * @param pmsg The actual message.
 */
static void
handle_port_close (void *cls,
                   const struct GNUNET_CADET_PortMessage *pmsg)
{
  struct CadetClient *c = cls;

  LOG (GNUNET_ERROR_TYPE_DEBUG,
       "Open port %s requested by client %u\n",
       GNUNET_h2s (&pmsg->port),
       c->id);
  if (GNUNET_YES !=
      GNUNET_CONTAINER_multihashmap_remove (c->ports,
                                            &pmsg->port,
                                            c))
  {
    GNUNET_break (0);
    GNUNET_SERVICE_client_drop (c->client);
    return;
  }
  GNUNET_assert (GNUNET_YES ==
                 GNUNET_CONTAINER_multihashmap_remove (open_ports,
                                                       &pmsg->port,
                                                       c));

  GNUNET_SERVICE_client_continue (c->client);
}

/**
 * We've paired up a client session with an incoming CADET request.
 * Initiate set intersection work.
 *
 * @param s client session to start intersection for
 */
static void
start_intersection (struct BobServiceSession *s)
{
  struct GNUNET_HashCode set_sid;

  GNUNET_CRYPTO_hash (&s->session_id,
                      sizeof (struct GNUNET_HashCode),
                      &set_sid);
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Got session with key %s and %u elements, starting intersection.\n",
              GNUNET_h2s (&s->session_id),
              (unsigned int) s->total);

  s->intersection_op
    = GNUNET_SET_prepare (&s->cadet->peer,
                          &set_sid,
                          NULL,
                          GNUNET_SET_RESULT_REMOVED,
                          &cb_intersection_element_removed,
                          s);
  if (GNUNET_OK !=
      GNUNET_SET_commit (s->intersection_op,
                         s->intersection_set))
  {
    GNUNET_break (0);
    s->status = GNUNET_SCALARPRODUCT_STATUS_FAILURE;
    prepare_client_end_notification (s);
    return;
  }
  GNUNET_SET_destroy (s->intersection_set);
  s->intersection_set = NULL;
}

/**
 * Function called whenever a channel is destroyed.  Should clean up
 * any associated state.
 *
 * It must NOT call #GNUNET_CADET_channel_destroy() on the channel.
 *
 * @param cls closure (set from #GNUNET_CADET_connect())
 * @param channel connection to the other end (henceforth invalid)
 * @param channel_ctx place where local state associated
 *                   with the channel is stored
 */
static void
cb_channel_destruction (void *cls,
                        const struct GNUNET_CADET_Channel *channel,
                        void *channel_ctx)
{
  struct CadetIncomingSession *in = channel_ctx;
  struct BobServiceSession *s;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Peer disconnected, terminating session %s with peer %s\n",
              GNUNET_h2s (&in->session_id),
              GNUNET_i2s (&in->peer));
  if (NULL != in->cadet_mq)
  {
    GNUNET_MQ_destroy (in->cadet_mq);
    in->cadet_mq = NULL;
  }
  in->channel = NULL;
  if (NULL != (s = in->s))
  {
    if (GNUNET_SCALARPRODUCT_STATUS_ACTIVE == s->status)
    {
      s->status = GNUNET_SCALARPRODUCT_STATUS_FAILURE;
      prepare_client_end_notification (s);
    }
  }
  destroy_cadet_session (in);
}

static void
init_notify_peer2 (void *cls, struct GNUNET_CORE_Handle *server,
                   const struct GNUNET_PeerIdentity *my_identity)
{
  struct TestMessageContext *pos = cls;

  total_server_connections++;

  pos->peer2connected = GNUNET_YES;
  if (pos->peer1notified == GNUNET_YES) /* Peer 1 has been notified of connection to peer 2 */
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Scheduling message send to peer `%s' from peer `%s' (init_notify_peer2)\n",
                GNUNET_i2s (my_identity),
                GNUNET_h2s (&pos->peer1->id.hashPubKey));
    if (NULL ==
        GNUNET_CORE_notify_transmit_ready (pos->peer1handle, GNUNET_YES, 0,
                                           TIMEOUT, &pos->peer2->id,
                                           sizeof (struct GNUNET_TestMessage),
                                           &transmit_ready, pos))
    {
      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                  "RECEIVED NULL when asking core (1) for transmission to peer `%4s'\n",
                  GNUNET_i2s (&pos->peer2->id));
      transmit_ready_failed++;
    }
    else
    {
      transmit_ready_scheduled++;
    }
  }
}

/**
 * Method called whenever another peer has added us to a channel
 * the other peer initiated.
 *
 * @param cls Closure.
 * @param channel New handle to the channel.
 * @param initiator Peer that started the channel.
 * @param port Port this channel is connected to.
 * @param options channel option flags
 * @return Initial channel context for the channel
 *         (can be NULL -- that's not an error).
 */
static void *
incoming_channel (void *cls, struct GNUNET_CADET_Channel *channel,
                 const struct GNUNET_PeerIdentity *initiator,
                 const struct GNUNET_HashCode *port,
                 enum GNUNET_CADET_ChannelOption options)
{
  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
              "Incoming channel from %s to peer %d:%s\n",
              GNUNET_i2s (initiator),
              (int) (long) cls, GNUNET_h2s (port));
  ok++;
  GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: %d\n", ok);
  if ((long) cls == peers_requested - 1)
    incoming_ch = channel;
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "Incoming channel for unknown client %lu\n", (long) cls);
    GNUNET_break(0);
  }
  if (NULL != disconnect_task)
  {
    GNUNET_SCHEDULER_cancel (disconnect_task);
    disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
                                                    &gather_stats_and_exit,
                                                    (void *) __LINE__);
  }

  return NULL;
}

/**
 * An iterator over a set of items stored in the datastore
 * that deletes until we're happy with respect to our quota.
 *
 * @param cls closure
 * @param key key for the content
 * @param size number of bytes in data
 * @param data content stored
 * @param type type of the content
 * @param priority priority of the content
 * @param anonymity anonymity-level for the content
 * @param expiration expiration time for the content
 * @param uid unique identifier for the datum;
 *        maybe 0 if no unique identifier is available
 *
 * @return GNUNET_SYSERR to abort the iteration, GNUNET_OK to continue
 *         (continue on call to "next", of course),
 *         GNUNET_NO to delete the item and continue (if supported)
 */
static int
quota_processor (void *cls, const struct GNUNET_HashCode * key, uint32_t size,
                 const void *data, enum GNUNET_BLOCK_Type type,
                 uint32_t priority, uint32_t anonymity,
                 struct GNUNET_TIME_Absolute expiration, uint64_t uid)
{
  unsigned long long *need = cls;

  if (NULL == key)
    return GNUNET_SYSERR;
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Deleting %llu bytes of low-priority (%u) content `%s' of type %u at %s prior to expiration (still trying to free another %llu bytes)\n",
              (unsigned long long) (size + GNUNET_DATASTORE_ENTRY_OVERHEAD),
	      (unsigned int) priority,
              GNUNET_h2s (key), type,
	      GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_remaining (expiration),
						      GNUNET_YES),
	      *need);
  if (size + GNUNET_DATASTORE_ENTRY_OVERHEAD > *need)
    *need = 0;
  else
    *need -= size + GNUNET_DATASTORE_ENTRY_OVERHEAD;
  if (priority > 0)
    min_expiration = GNUNET_TIME_UNIT_FOREVER_ABS;
  else
    min_expiration = expiration;
  GNUNET_STATISTICS_update (stats,
                            gettext_noop ("# bytes purged (low-priority)"),
                            size, GNUNET_YES);
  GNUNET_CONTAINER_bloomfilter_remove (filter, key);
  return GNUNET_NO;
}

/**
 * Notify of all peer1's peers, once peer 2 is found, schedule connect
 * to peer two for message send.
 *
 * @param cls closure
 * @param peer peer identity this notification is about
 * @param atsi performance data for the connection
 * @param atsi_count number of ATS information included
 */
static void
connect_notify_peer2 (void *cls, const struct GNUNET_PeerIdentity *peer,
                      const struct GNUNET_ATS_Information *atsi,
                      unsigned int atsi_count)
{
  struct TestMessageContext *pos = cls;

  if (0 == memcmp (&pos->peer1->id, peer, sizeof (struct GNUNET_PeerIdentity)))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Core connection from `%s' to `%4s' verfied, sending message!\n",
                GNUNET_i2s (&pos->peer2->id), GNUNET_h2s (&peer->hashPubKey));
    if (NULL ==
        GNUNET_CORE_notify_transmit_ready (pos->peer1handle, GNUNET_YES, 0,
                                           TIMEOUT, &pos->peer2->id,
                                           sizeof (struct GNUNET_TestMessage),
                                           &transmit_ready, pos))
    {
      /* This probably shouldn't happen, but it does (timing issue?) */
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                  "RECEIVED NULL when asking core (1) for transmission to peer `%4s'\n",
                  GNUNET_i2s (&pos->peer2->id));
      transmit_ready_failed++;
      total_other_expected_messages--;
    }
    else
    {
      transmit_ready_scheduled++;
    }
  }
}

/**
 * Handle a GET request we've received from another peer.
 *
 * @param key the query
 * @param type requested data type
 * @param xquery extended query
 * @param xquery_size number of bytes in @a xquery
 * @param reply_bf where the reply bf is (to be) stored, possibly updated, can be NULL
 * @param reply_bf_mutator mutation value for @a reply_bf
 * @return evaluation result for the local replies
 */
enum GNUNET_BLOCK_EvaluationResult
GDS_DATACACHE_handle_get (const struct GNUNET_HashCode *key,
                          enum GNUNET_BLOCK_Type type,
                          const void *xquery,
                          size_t xquery_size,
                          struct GNUNET_CONTAINER_BloomFilter **reply_bf,
                          uint32_t reply_bf_mutator)
{
  struct GetRequestContext ctx;
  unsigned int r;

  if (NULL == datacache)
    return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
  GNUNET_STATISTICS_update (GDS_stats,
                            gettext_noop ("# GET requests given to datacache"),
                            1,
                            GNUNET_NO);
  ctx.eval = GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
  ctx.key = *key;
  ctx.xquery = xquery;
  ctx.xquery_size = xquery_size;
  ctx.reply_bf = reply_bf;
  ctx.reply_bf_mutator = reply_bf_mutator;
  r = GNUNET_DATACACHE_get (datacache,
                            key,
                            type,
                            &datacache_get_iterator,
                            &ctx);
  LOG (GNUNET_ERROR_TYPE_DEBUG,
       "DATACACHE GET for key %s completed (%d). %u results found.\n",
       GNUNET_h2s (key),
       ctx.eval,
       r);
  return ctx.eval;
}

/**
 * Route the given request via the DHT.  This includes updating
 * the bloom filter and retransmission times, building the P2P
 * message and initiating the routing operation.
 */
static void
transmit_request (struct ClientQueryRecord *cqr)
{
  int32_t reply_bf_mutator;
  struct GNUNET_CONTAINER_BloomFilter *reply_bf;
  struct GNUNET_CONTAINER_BloomFilter *peer_bf;

  GNUNET_STATISTICS_update (GDS_stats,
                            gettext_noop
                            ("# GET requests from clients injected"), 1,
                            GNUNET_NO);
  reply_bf_mutator =
      (int32_t) GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
                                          UINT32_MAX);
  reply_bf =
      GNUNET_BLOCK_construct_bloomfilter (reply_bf_mutator, cqr->seen_replies,
                                          cqr->seen_replies_count);
  peer_bf =
      GNUNET_CONTAINER_bloomfilter_init (NULL, DHT_BLOOM_SIZE,
                                         GNUNET_CONSTANTS_BLOOMFILTER_K);
  LOG (GNUNET_ERROR_TYPE_DEBUG,
       "Initiating GET for %s, replication %u, already have %u replies\n",
       GNUNET_h2s(&cqr->key), cqr->replication, cqr->seen_replies_count);
  GDS_NEIGHBOURS_handle_get (cqr->type, cqr->msg_options, cqr->replication,
                             0 /* hop count */ ,
                             &cqr->key, cqr->xquery, cqr->xquery_size, reply_bf,
                             reply_bf_mutator, peer_bf);
  GNUNET_CONTAINER_bloomfilter_free (reply_bf);
  GNUNET_CONTAINER_bloomfilter_free (peer_bf);

  /* exponential back-off for retries.
   * max GNUNET_TIME_STD_EXPONENTIAL_BACKOFF_THRESHOLD (15 min) */
  cqr->retry_frequency = GNUNET_TIME_STD_BACKOFF (cqr->retry_frequency);
  cqr->retry_time = GNUNET_TIME_relative_to_absolute (cqr->retry_frequency);
}

/**
 * Look for a block by directly contacting a particular peer.
 *
 * @param target peer that should have the block
 * @param query hash to query for the block
 * @param type desired type for the block
 * @param proc function to call with result
 * @param proc_cls closure for 'proc'
 * @return handle to cancel the operation
 */
struct GSF_StreamRequest *
GSF_stream_query (const struct GNUNET_PeerIdentity *target,
		  const struct GNUNET_HashCode *query,
		  enum GNUNET_BLOCK_Type type,
		  GSF_StreamReplyProcessor proc, void *proc_cls)
{
  struct StreamHandle *sh;
  struct GSF_StreamRequest *sr;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
	      "Preparing to send query for %s via stream to %s\n",
	      GNUNET_h2s (query),
	      GNUNET_i2s (target));
  sh = get_stream (target);
  sr = GNUNET_malloc (sizeof (struct GSF_StreamRequest));
  sr->sh = sh;
  sr->proc = proc;
  sr->proc_cls = proc_cls;
  sr->type = type;
  sr->query = *query;
  GNUNET_CONTAINER_DLL_insert (sh->pending_head,
			       sh->pending_tail,
			       sr);
  if (GNUNET_YES == sh->is_ready)
    transmit_pending (sh);
  return sr;
}

/**
 * Encrypt the next block of the file (and call proc and progress
 * accordingly; or of course "cont" if we have already completed
 * encoding of the entire file).
 *
 * @param te tree encoder to use
 */
void
GNUNET_FS_tree_encoder_next (struct GNUNET_FS_TreeEncoder *te)
{
  struct ContentHashKey *mychk;
  const void *pt_block;
  uint16_t pt_size;
  char iob[DBLOCK_SIZE];
  char enc[DBLOCK_SIZE];
  struct GNUNET_CRYPTO_SymmetricSessionKey sk;
  struct GNUNET_CRYPTO_SymmetricInitializationVector iv;
  unsigned int off;

  GNUNET_assert (GNUNET_NO == te->in_next);
  te->in_next = GNUNET_YES;
  if (te->chk_tree_depth == te->current_depth)
  {
    off = CHK_PER_INODE * (te->chk_tree_depth - 1);
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TE done, reading CHK `%s' from %u\n",
                GNUNET_h2s (&te->chk_tree[off].query), off);
    te->uri = GNUNET_new (struct GNUNET_FS_Uri);
    te->uri->type = GNUNET_FS_URI_CHK;
    te->uri->data.chk.chk = te->chk_tree[off];
    te->uri->data.chk.file_length = GNUNET_htonll (te->size);
    te->in_next = GNUNET_NO;
    te->cont (te->cls, NULL);
    return;
  }