/*
   This file is part of GNUnet.
   Copyright (C) 2004, 2009 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 peerinfo/test_peerinfo_api_notify_friend_only.c
 * @brief testcase friend only HELLO restrictions in for peerinfo
 * @author Christian Grothoff
 * @author Matthias Wachs
 *
 * TODO:
 * - test merging of HELLOs (add same peer twice...)
 */
#include "platform.h"
#include "gnunet_hello_lib.h"
#include "gnunet_util_lib.h"
#include "gnunet_peerinfo_service.h"
#include "gnunet_testing_lib.h"
#include "peerinfo.h"

#define TIMEOUT  GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)

static struct GNUNET_PEERINFO_Handle *h;
static struct GNUNET_PEERINFO_NotifyContext *pnc_w_fo;
static struct GNUNET_PEERINFO_NotifyContext *pnc_wo_fo;

static const struct GNUNET_CONFIGURATION_Handle *mycfg;

static int global_ret;

/**
 * Did we get a HELLO callback for notification handle with friend HELLOS
 * (expected)
 */
static int res_cb_w_fo;

/**
 * Did we get a HELLO callback for notification handle without friend HELLOS
 * (not expected)
 */
static int res_cb_wo_fo;

struct GNUNET_PeerIdentity pid;

struct GNUNET_SCHEDULER_Task *timeout_task;

static void
end_badly (void *cls)
{
  timeout_task = NULL;
  GNUNET_break (0);
  if (NULL != pnc_wo_fo)
  {
    GNUNET_PEERINFO_notify_cancel (pnc_wo_fo);
    pnc_wo_fo = NULL;
  }
  if (NULL != pnc_w_fo)
  {
    GNUNET_PEERINFO_notify_cancel (pnc_w_fo);
    pnc_w_fo = NULL;
  }
  if (NULL != h)
  {
    GNUNET_PEERINFO_disconnect (h);
    h = NULL;
  }
  global_ret = 255;
}


static void
done (void *cls)
{
  if (NULL != pnc_w_fo)
    GNUNET_PEERINFO_notify_cancel (pnc_w_fo);
  pnc_w_fo = NULL;
  if (NULL != pnc_wo_fo)
    GNUNET_PEERINFO_notify_cancel (pnc_wo_fo);
  pnc_wo_fo = NULL;
  GNUNET_PEERINFO_disconnect (h);
  h = NULL;

  if (NULL != timeout_task)
  {
    GNUNET_SCHEDULER_cancel (timeout_task);
    timeout_task = NULL;
  }

  if ((GNUNET_YES == res_cb_w_fo) && (GNUNET_NO == res_cb_wo_fo))
    global_ret = 0;
  else
    GNUNET_break (0);
}


static ssize_t
address_generator (void *cls, size_t max, void *buf)
{
  size_t *agc = cls;
  ssize_t ret;
  struct GNUNET_HELLO_Address address;

  if (0 == *agc)
    return GNUNET_SYSERR; /* Done */
  memset (&address.peer, 0, sizeof(struct GNUNET_PeerIdentity));
  address.address = "Address";
  address.transport_name = "peerinfotest";
  address.address_length = *agc;
  ret = GNUNET_HELLO_add_address (&address,
                                  GNUNET_TIME_relative_to_absolute (
                                    GNUNET_TIME_UNIT_HOURS), buf, max);
  (*agc)--;
  return ret;
}


static void
process_w_fo (void *cls,
              const struct GNUNET_PeerIdentity *peer,
              const struct GNUNET_HELLO_Message *hello,
              const char *err_msg)
{
  if (err_msg != NULL)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                _ ("Error in communication with PEERINFO service\n"));
    GNUNET_SCHEDULER_add_now (&done, NULL);
    return;
  }

  if (NULL != peer)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
                "Received callback for peer `%s' %s HELLO\n", GNUNET_i2s (peer),
                (NULL != hello) ? "with" : "without");

    if (NULL == hello)
      return;

    if (GNUNET_NO == GNUNET_HELLO_is_friend_only (hello))
    {
      GNUNET_break (0);
      return;
    }

    GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Received %s HELLO for peer `%s'\n",
                (GNUNET_YES == GNUNET_HELLO_is_friend_only (hello)) ?
                "friend only" : "public",
                GNUNET_i2s (peer));
    if (0 == GNUNET_memcmp (&pid, peer))
    {
      res_cb_w_fo = GNUNET_YES;
      GNUNET_SCHEDULER_add_now (&done, NULL);
    }
    return;
  }
}


static void
process_wo_fo (void *cls, const struct GNUNET_PeerIdentity *peer,
               const struct GNUNET_HELLO_Message *hello, const char *err_msg)
{
  if (err_msg != NULL)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                _ ("Error in communication with PEERINFO service\n"));
    GNUNET_SCHEDULER_add_now (&done, NULL);
    return;
  }

  if (NULL != peer)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
                "Received callback for peer `%s' %s HELLO\n", GNUNET_i2s (peer),
                (NULL != hello) ? "with" : "without");

    if (NULL == hello)
      return;

    if (GNUNET_YES == GNUNET_HELLO_is_friend_only (hello))
    {
      GNUNET_break (0);
      return;
    }

    GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Received %s HELLO for peer `%s'\n",
                (GNUNET_YES == GNUNET_HELLO_is_friend_only (hello)) ?
                "friend only" : "public",
                GNUNET_i2s (peer));
    if (0 == GNUNET_memcmp (&pid, peer))
    {
      GNUNET_break (0);
      res_cb_wo_fo = GNUNET_YES;
    }
  }
}


static void
add_peer ()
{
  struct GNUNET_HELLO_Message *h2;
  size_t agc;

  agc = 2;
  memset (&pid, 32, sizeof(pid));
  h2 = GNUNET_HELLO_create (&pid.public_key, &address_generator, &agc,
                            GNUNET_YES);
  GNUNET_PEERINFO_add_peer (h, h2, NULL, NULL);
  GNUNET_free (h2);
}


static void
run (void *cls,
     const struct GNUNET_CONFIGURATION_Handle *cfg,
     struct GNUNET_TESTING_Peer *peer)
{
  timeout_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, NULL);
  mycfg = cfg;
  pnc_w_fo = GNUNET_PEERINFO_notify (mycfg, GNUNET_YES, &process_w_fo, NULL);
  pnc_wo_fo = GNUNET_PEERINFO_notify (mycfg, GNUNET_NO, &process_wo_fo, NULL);
  h = GNUNET_PEERINFO_connect (cfg);
  GNUNET_assert (NULL != h);
  add_peer ();
}


int
main (int argc, char *argv[])
{
  res_cb_w_fo = GNUNET_NO;
  res_cb_wo_fo = GNUNET_NO;
  global_ret = 3;
  if (0 != GNUNET_TESTING_service_run ("test-peerinfo-api-friend-only",
                                       "peerinfo",
                                       "test_peerinfo_api_data.conf",
                                       &run, NULL))
    return 1;
  return global_ret;
}


/* end of test_peerinfo_api_notify_friend_only.c */
