/*
     This file is part of GNUnet.
     (C) 2009 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
     by the Free Software Foundation; either version 3, 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
     General Public License for more details.

     You should have received a copy of the GNU General Public License
     along with GNUnet; see the file COPYING.  If not, write to the
     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
*/
/**
 * @file namestore/test_namestore_api_zone_to_name.c
 * @brief testcase for zone to name translation
 */
#include "platform.h"
#include "gnunet_common.h"
#include "gnunet_namestore_service.h"
#include "namestore.h"
#include "gnunet_signatures.h"

#define VERBOSE GNUNET_NO

#define RECORDS 5
#define TEST_RECORD_TYPE 1234
#define TEST_RECORD_DATALEN 123
#define TEST_RECORD_DATA 'a'

#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)

static struct GNUNET_NAMESTORE_Handle * nsh;

static GNUNET_SCHEDULER_TaskIdentifier endbadly_task;
static struct GNUNET_OS_Process *arm;

static struct GNUNET_CRYPTO_RsaPrivateKey * privkey;
static struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pubkey;

struct GNUNET_TIME_Absolute expire;

static struct GNUNET_CRYPTO_ShortHashCode s_zone;
static struct GNUNET_CRYPTO_ShortHashCode s_zone_value;

char * s_name;

struct GNUNET_NAMESTORE_RecordData *s_rd;
struct GNUNET_CRYPTO_RsaSignature *s_signature;

static int res;

static void
start_arm (const char *cfgname)
{
  arm = GNUNET_OS_start_process (GNUNET_YES, NULL, NULL, "gnunet-service-arm",
                               "gnunet-service-arm", "-c", cfgname,
#if VERBOSE_PEERS
                               "-L", "DEBUG",
#else
                               "-L", "ERROR",
#endif
                               NULL);
}

static void
stop_arm ()
{
  if (NULL != arm)
  {
    if (0 != GNUNET_OS_process_kill (arm, SIGTERM))
      GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "kill");
    GNUNET_OS_process_wait (arm);
    GNUNET_OS_process_destroy (arm);
    arm = NULL;
  }
}

/**
 * Re-establish the connection to the service.
 *
 * @param cls handle to use to re-connect.
 * @param tc scheduler context
 */
static void
endbadly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  if (nsh != NULL)
    GNUNET_NAMESTORE_disconnect (nsh, GNUNET_YES);
  nsh = NULL;

  if (privkey != NULL)
    GNUNET_CRYPTO_rsa_key_free (privkey);
  privkey = NULL;

  if (NULL != arm)
    stop_arm();

  res = 1;
}


static void
end (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  if (endbadly_task != GNUNET_SCHEDULER_NO_TASK)
  {
    GNUNET_SCHEDULER_cancel (endbadly_task);
    endbadly_task = GNUNET_SCHEDULER_NO_TASK;
  }

  if (privkey != NULL)
    GNUNET_CRYPTO_rsa_key_free (privkey);
  privkey = NULL;

  if (nsh != NULL)
    GNUNET_NAMESTORE_disconnect (nsh, GNUNET_YES);
  nsh = NULL;

  if (NULL != arm)
    stop_arm();
}

void zone_to_name_proc (void *cls,
                            const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
                            struct GNUNET_TIME_Absolute expire,
                            const char *n,
                            unsigned int rd_count,
                            const struct GNUNET_NAMESTORE_RecordData *rd,
                            const struct GNUNET_CRYPTO_RsaSignature *signature)
{
  int fail = GNUNET_NO;

  if ((zone_key == NULL) && (n == NULL) && (rd_count == 0) && (rd == NULL) && (signature == NULL))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No result found\n");
    res = 1;
  }
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Result found: `%s'\n", n);
    if ((n == NULL) || (0 != strcmp(n, s_name)))
    {
      fail = GNUNET_YES;
      GNUNET_break (0);
    }
    if (rd_count != 1)
    {
      fail = GNUNET_YES;
      GNUNET_break (0);
    }
    if ((zone_key == NULL) || (0 != memcmp (zone_key, &pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded))))
    {
      fail = GNUNET_YES;
      GNUNET_break (0);
    }
    if (fail == GNUNET_NO)
      res = 0;
    else
      res = 1;
  }
  GNUNET_SCHEDULER_add_now(&end, NULL);
}


void
delete_existing_db (const struct GNUNET_CONFIGURATION_Handle *cfg)
{
  char *afsdir;

  if (GNUNET_OK ==
      GNUNET_CONFIGURATION_get_value_filename (cfg, "namestore-sqlite",
                                               "FILENAME", &afsdir))
  {
    if (GNUNET_OK == GNUNET_DISK_file_test (afsdir))
      if (GNUNET_OK == GNUNET_DISK_file_test (afsdir))
        if (GNUNET_OK == GNUNET_DISK_directory_remove(afsdir))
          GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Deleted existing database `%s' \n", afsdir);
   GNUNET_free (afsdir);
  }

}


void
put_cont (void *cls, int32_t success, const char *emsg)
{
  char *name = cls;
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Name store added record for `%s': %s\n", name, (success == GNUNET_OK) ? "SUCCESS" : "FAIL");
  if (success == GNUNET_OK)
  {
    res = 0;

    /* create initial record */
    GNUNET_NAMESTORE_zone_to_name (nsh, &s_zone, &s_zone_value, zone_to_name_proc, NULL);

  }
  else
  {
    res = 1;
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to put records for name `%s'\n", name);
    GNUNET_SCHEDULER_add_now(&end, NULL);
  }
}

static void
run (void *cls, char *const *args, const char *cfgfile,
     const struct GNUNET_CONFIGURATION_Handle *cfg)
{
  delete_existing_db(cfg);

  endbadly_task = GNUNET_SCHEDULER_add_delayed(TIMEOUT,endbadly, NULL);
  GNUNET_asprintf(&s_name, "dummy");


  /* load privat key */
  char *hostkey_file;
  GNUNET_asprintf(&hostkey_file,"zonefiles%s%s",DIR_SEPARATOR_STR,
      "N0UJMP015AFUNR2BTNM3FKPBLG38913BL8IDMCO2H0A1LIB81960.zkey");
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Using zonekey file `%s' \n", hostkey_file);
  privkey = GNUNET_CRYPTO_rsa_key_create_from_file(hostkey_file);
  GNUNET_free (hostkey_file);
  GNUNET_assert (privkey != NULL);
  /* get public key */
  GNUNET_CRYPTO_rsa_key_get_public(privkey, &pubkey);

  /* zone hash */
  GNUNET_CRYPTO_short_hash (&pubkey, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded), &s_zone);
  GNUNET_CRYPTO_short_hash (s_name, strlen (s_name) + 1, &s_zone_value);
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Using PKEY `%s' \n", GNUNET_short_h2s (&s_zone_value));

  struct GNUNET_NAMESTORE_RecordData rd;
  rd.expiration = GNUNET_TIME_absolute_get();
  rd.record_type = GNUNET_NAMESTORE_TYPE_PKEY;
  rd.data_size = sizeof (struct GNUNET_CRYPTO_ShortHashCode);
  rd.data = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_ShortHashCode));
  memcpy ((char *) rd.data, &s_zone_value, sizeof (struct GNUNET_CRYPTO_ShortHashCode));

  start_arm (cfgfile);
  GNUNET_assert (arm != NULL);

  nsh = GNUNET_NAMESTORE_connect (cfg);
  GNUNET_break (NULL != nsh);

  expire = GNUNET_TIME_absolute_get ();
  s_signature = GNUNET_NAMESTORE_create_signature(privkey, rd.expiration, s_name, &rd, 1);
  GNUNET_NAMESTORE_record_put(nsh, &pubkey, s_name, expire, 1, &rd, s_signature, put_cont, NULL);

  GNUNET_free ((void *) rd.data);
}

static int
check ()
{
  static char *const argv[] = { "test-namestore-api",
    "-c",
    "test_namestore_api.conf",
#if VERBOSE
    "-L", "DEBUG",
#endif
    NULL
  };
  static struct GNUNET_GETOPT_CommandLineOption options[] = {
    GNUNET_GETOPT_OPTION_END
  };

  res = 1;
  GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1, argv, "test-namestore-api",
                      "nohelp", options, &run, &res);
  return res;
}

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

  ret = check ();
  return ret;
}

/* end of test_namestore_api.c */