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/*
     This file is part of GNUnet.
     Copyright (C) 2013, 2018 GNUnet e.V.

     GNUnet is free software: you can redistribute it and/or modify it
     under the terms of the GNU Affero General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     or (at your option) any later version.

     GNUnet is distributed in the hope that it will be useful, but
     WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Affero General Public License for more details.

     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */
/**
 * @file namestore/test_namestore_api_monitoring_existing.c
 * @brief testcase for zone monitoring functionality: add records first, then monitor
 */
#include "platform.h"
#include "gnunet_namestore_service.h"
#include "gnunet_testing_lib.h"

#define TEST_RECORD_TYPE GNUNET_DNSPARSER_TYPE_TXT


#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)

static const struct GNUNET_CONFIGURATION_Handle *cfg;

static struct GNUNET_NAMESTORE_Handle *nsh;

static struct GNUNET_SCHEDULER_Task *endbadly_task;

static struct GNUNET_CRYPTO_PrivateKey privkey;

static struct GNUNET_CRYPTO_PrivateKey privkey2;

static struct GNUNET_NAMESTORE_ZoneMonitor *zm;

static int res;

static const char *s_name_1;

static struct GNUNET_GNSRECORD_Data *s_rd_1;

static const char *s_name_2;

static struct GNUNET_GNSRECORD_Data *s_rd_2;

static const char *s_name_3;

static struct GNUNET_GNSRECORD_Data *s_rd_3;

struct GNUNET_NAMESTORE_QueueEntry *ns_ops[3];


/**
 * Re-establish the connection to the service.
 *
 * @param cls handle to use to re-connect.
 */
static void
endbadly (void *cls)
{
  endbadly_task = NULL;
  GNUNET_break (0);
  GNUNET_SCHEDULER_shutdown ();
  res = 1;
}


static void
end (void *cls)
{
  if (NULL != zm)
  {
    GNUNET_NAMESTORE_zone_monitor_stop (zm);
    zm = NULL;
  }
  if (NULL != ns_ops[0])
  {
    GNUNET_NAMESTORE_cancel (ns_ops[0]);
    ns_ops[0] = NULL;
  }
  if (NULL != ns_ops[1])
  {
    GNUNET_NAMESTORE_cancel (ns_ops[1]);
    ns_ops[1] = NULL;
  }
  if (NULL != ns_ops[2])
  {
    GNUNET_NAMESTORE_cancel (ns_ops[2]);
    ns_ops[2] = NULL;
  }
  if (NULL != endbadly_task)
  {
    GNUNET_SCHEDULER_cancel (endbadly_task);
    endbadly_task = NULL;
  }
  if (NULL != nsh)
  {
    GNUNET_NAMESTORE_disconnect (nsh);
    nsh = NULL;
  }
  if (NULL != s_rd_1)
  {
    GNUNET_free_nz ((void *) s_rd_1->data);
    GNUNET_free (s_rd_1);
  }
  if (NULL != s_rd_2)
  {
    GNUNET_free_nz ((void *) s_rd_2->data);
    GNUNET_free (s_rd_2);
  }
  if (NULL != s_rd_3)
  {
    GNUNET_free_nz ((void *) s_rd_3->data);
    GNUNET_free (s_rd_3);
  }
}


static void
zone_proc (void *cls,
           const struct GNUNET_CRYPTO_PrivateKey *zone_key,
           const char *name,
           unsigned int rd_count,
           const struct GNUNET_GNSRECORD_Data *rd)
{
  static int returned_records;
  static int fail = GNUNET_NO;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Comparing results name %s\n",
              name);
  if (0 != GNUNET_memcmp (zone_key,
                          &privkey))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Monitoring returned wrong zone key\n");
    GNUNET_break (0);
    GNUNET_SCHEDULER_shutdown ();
    return;
  }

  if (0 == strcmp (name,
                   s_name_1))
  {
    if (GNUNET_YES !=
        GNUNET_GNSRECORD_records_cmp (rd,
                                      s_rd_1))
    {
      GNUNET_break (0);
      fail = GNUNET_YES;
    }
  }
  else if (0 == strcmp (name,
                        s_name_2))
  {
    if (GNUNET_YES !=
        GNUNET_GNSRECORD_records_cmp (rd,
                                      s_rd_2))
    {
      GNUNET_break (0);
      fail = GNUNET_YES;
    }
  }
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Invalid name %s\n",
                name);
    GNUNET_break (0);
    fail = GNUNET_YES;
  }
  GNUNET_NAMESTORE_zone_monitor_next (zm,
                                      1);
  if (2 == ++returned_records)
  {
    GNUNET_SCHEDULER_shutdown ();
    if (GNUNET_YES == fail)
    {
      GNUNET_break (0);
      res = 1;
    }
    else
    {
      res = 0;
    }
  }
}


static void
fail_cb (void *cls)
{
  GNUNET_assert (0);
}


static void
sync_cb (void *cls)
{
  /* do nothing */
}


static void
put_cont (void *cls,
          enum GNUNET_ErrorCode ec)
{
  static int c = 0;
  const char *label = cls;

  if (0 == strcmp (label,
                   s_name_1))
    ns_ops[0] = NULL;
  else if (0 == strcmp (label,
                        s_name_2))
    ns_ops[1] = NULL;
  else if (0 == strcmp (label,
                        s_name_3))
    ns_ops[2] = NULL;

  if (GNUNET_EC_NONE == ec)
  {
    c++;
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Created record %u: `%s'\n",
                c,
                label);
  }
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Failed to created records\n");
    GNUNET_break (0);
    res = 1;
    GNUNET_SCHEDULER_shutdown ();
    return;
  }

}


static struct GNUNET_GNSRECORD_Data *
create_record (unsigned int count)
{
  struct GNUNET_GNSRECORD_Data *rd;

  rd = GNUNET_new_array (count,
                         struct GNUNET_GNSRECORD_Data);
  for (unsigned int c = 0; c < count; c++)
  {
    rd[c].expiration_time = GNUNET_TIME_relative_to_absolute (
      GNUNET_TIME_UNIT_HOURS).abs_value_us;
    rd[c].record_type = TEST_RECORD_TYPE;
    rd[c].data_size = 50;
    rd[c].data = GNUNET_malloc (50);
    rd[c].flags = 0;
    memset ((char *) rd[c].data,
            'a',
            50);
  }
  return rd;
}


static void
run (void *cls,
     const struct GNUNET_CONFIGURATION_Handle *mycfg,
     struct GNUNET_TESTING_Peer *peer)
{
  res = 1;
  privkey.type = htonl (GNUNET_GNSRECORD_TYPE_PKEY);
  privkey2.type = htonl (GNUNET_GNSRECORD_TYPE_PKEY);
  GNUNET_CRYPTO_ecdsa_key_create (&privkey.ecdsa_key);
  GNUNET_CRYPTO_ecdsa_key_create (&privkey2.ecdsa_key);

  cfg = mycfg;
  GNUNET_SCHEDULER_add_shutdown (&end,
                                 NULL);
  endbadly_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
                                                &endbadly,
                                                NULL);
  /* Connect to namestore */
  nsh = GNUNET_NAMESTORE_connect (cfg);
  if (NULL == nsh)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Connect to namestore failed\n");
    GNUNET_break (0);
    endbadly_task = GNUNET_SCHEDULER_add_now (&endbadly,
                                              NULL);
    return;
  }
  /* Start monitoring */
  zm = GNUNET_NAMESTORE_zone_monitor_start (cfg,
                                            &privkey,
                                            GNUNET_YES,
                                            &fail_cb,
                                            NULL,
                                            &zone_proc,
                                            NULL,
                                            &sync_cb,
                                            NULL);
  if (NULL == zm)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Failed to create zone monitor\n");
    GNUNET_break (0);
    res = 1;
    GNUNET_SCHEDULER_shutdown ();
    return;
  }

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Created record 3\n");
  /* name in different zone */
  s_name_3 = "dummy3";
  s_rd_3 = create_record (1);
  GNUNET_assert (NULL != (ns_ops[2] =
                            GNUNET_NAMESTORE_record_set_store (nsh,
                                                               &privkey2,
                                                               s_name_3,
                                                               1,
                                                               s_rd_3,
                                                               &put_cont,
                                                               (void *) s_name_3)));

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Created record 1\n");
  s_name_1 = "dummy1";
  s_rd_1 = create_record (1);
  GNUNET_assert (NULL != (ns_ops[0] =
                            GNUNET_NAMESTORE_record_set_store (nsh,
                                                               &privkey,
                                                               s_name_1,
                                                               1,
                                                               s_rd_1,
                                                               &put_cont,
                                                               (void *) s_name_1)));
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Created record 2 \n");
  s_name_2 = "dummy2";
  s_rd_2 = create_record (1);
  GNUNET_assert (NULL != (ns_ops[1] =
                            GNUNET_NAMESTORE_record_set_store (nsh,
                                                               &privkey,
                                                               s_name_2,
                                                               1,
                                                               s_rd_2,
                                                               &put_cont,
                                                               (void *) s_name_2)));
}


#include "test_common.c"


int
main (int argc,
      char *argv[])
{
  char *plugin_name;
  char *cfg_name;

  SETUP_CFG (plugin_name, cfg_name);
  res = 1;
  if (0 !=
      GNUNET_TESTING_peer_run ("test-namestore-api-monitoring-existing",
                               cfg_name,
                               &run,
                               NULL))
  {
    GNUNET_break (0);
    res = 1;
  }
  GNUNET_DISK_purge_cfg_dir (cfg_name,
                             "GNUNET_TEST_HOME");
  GNUNET_free (plugin_name);
  GNUNET_free (cfg_name);
  return res;
}


/* end of test_namestore_api_monitoring_existing.c */