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/*
* This file is part of GNUnet.
* Copyright (C)
*
* 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 sensor/test_pow_sign.c
* @brief testcase for proof-of-work and signature library functions
*/
#include <inttypes.h>
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_sensor_util_lib.h"
#include "gnunet_testbed_service.h"
#include "gnunet_signatures.h"
/**
* Number of peers to start for the test
*/
#define NUM_PEERS 1
/**
* Size of the message exchanged
*/
#define MSG_SIZE 1024
/**
* Number of matching bits to use for generating proof-of-work
*/
#define MATCHING_BITS 5
/**
* Test timeout
*/
#define TEST_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 1)
/**
* Test name
*/
static const char *testname = "test_pow_sign";
/**
* Name of GNUNET config file used in this test
*/
static const char *cfg_filename = "test_pow_sign.conf";
/**
* Status of the test to be returned by main()
*/
static int ok = 1;
/**
* Task used to shutdown / expire the test
*/
static struct GNUNET_SCHEDULER_Task * shutdown_task;
/**
* Message to be exchanged
*/
static char msg[MSG_SIZE];
/**
* Private key of sending peer
*/
static struct GNUNET_CRYPTO_EddsaPrivateKey *private_key;
/**
* Public key of sending peer
*/
static struct GNUNET_CRYPTO_EddsaPublicKey *public_key;
/**
* Shutdown task
*
* @param cls Closure (unused)
* @param tc Task context (unused)
*/
static void
do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
if (NULL != private_key)
{
GNUNET_free (private_key);
private_key = NULL;
}
if (NULL != public_key)
{
GNUNET_free (public_key);
public_key = NULL;
}
GNUNET_SCHEDULER_shutdown ();
}
static void
pow_cb (void *cls, struct GNUNET_SENSOR_crypto_pow_block *block)
{
void *response;
struct GNUNET_TIME_Absolute end_time;
struct GNUNET_TIME_Relative duration;
end_time = GNUNET_TIME_absolute_get();
duration = GNUNET_TIME_absolute_get_difference (block->timestamp, end_time);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received block:\n" "pow: %" PRIu64 ".\n", block->pow);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Block generation toke %s.\n",
GNUNET_STRINGS_relative_time_to_string (duration, GNUNET_NO));
/* Test that the block is valid */
GNUNET_assert (MSG_SIZE ==
GNUNET_SENSOR_crypto_verify_pow_sign (block, MATCHING_BITS,
public_key, &response));
GNUNET_assert (0 == memcmp (msg, response, MSG_SIZE));
/* Modify the payload and test that verification returns invalid */
block->pow++;
GNUNET_assert (0 ==
GNUNET_SENSOR_crypto_verify_pow_sign (block, MATCHING_BITS,
public_key, &response));
ok = 0;
GNUNET_SCHEDULER_cancel (shutdown_task);
GNUNET_SCHEDULER_add_now (do_shutdown, NULL);
}
/**
* Callback to be called when the requested peer information is available
*
* @param cb_cls the closure from GNUNET_TETSBED_peer_get_information()
* @param op the operation this callback corresponds to
* @param pinfo the result; will be NULL if the operation has failed
* @param emsg error message if the operation has failed; will be NULL if the
* operation is successfull
*/
static void
peer_info_cb (void *cb_cls, struct GNUNET_TESTBED_Operation *op,
const struct GNUNET_TESTBED_PeerInformation *pinfo,
const char *emsg)
{
struct GNUNET_TIME_Absolute timestamp;
/* generate random data block */
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK, msg, MSG_SIZE);
/* get private and public keys */
private_key =
GNUNET_CRYPTO_eddsa_key_create_from_configuration (pinfo->result.cfg);
GNUNET_assert (NULL != private_key);
public_key = GNUNET_new (struct GNUNET_CRYPTO_EddsaPublicKey);
GNUNET_CRYPTO_eddsa_key_get_public (private_key, public_key);
/* create pow and sign */
timestamp = GNUNET_TIME_absolute_get ();
GNUNET_SENSOR_crypto_pow_sign (msg, MSG_SIZE, ×tamp, public_key,
private_key, MATCHING_BITS, &pow_cb, NULL);
GNUNET_TESTBED_operation_done (op);
}
/**
* Signature of a main function for a testcase.
*
* @param cls closure
* @param h the run handle
* @param num_peers number of peers in 'peers'
* @param peers handle to peers run in the testbed. NULL upon timeout (see
* GNUNET_TESTBED_test_run()).
* @param links_succeeded the number of overlay link connection attempts that
* succeeded
* @param links_failed the number of overlay link connection attempts that
* failed
* @see GNUNET_TESTBED_test_run()
*/
static void
test_master (void *cls, struct GNUNET_TESTBED_RunHandle *h,
unsigned int num_peers, struct GNUNET_TESTBED_Peer **peers,
unsigned int links_succeeded, unsigned int links_failed)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"%d peers started. %d links succeeded. %d links failed.\n",
num_peers, links_succeeded, links_failed);
GNUNET_assert (NUM_PEERS == num_peers);
GNUNET_assert (0 == links_failed);
/* Schedule test timeout */
shutdown_task =
GNUNET_SCHEDULER_add_delayed (TEST_TIMEOUT, &do_shutdown, NULL);
GNUNET_TESTBED_peer_get_information (peers[0],
GNUNET_TESTBED_PIT_CONFIGURATION,
&peer_info_cb, peers[0]);
}
int
main (int argc, char *argv[])
{
GNUNET_log_setup (testname, "INFO", NULL);
if (GNUNET_OK ==
GNUNET_TESTBED_test_run (testname, cfg_filename, NUM_PEERS, 0, NULL, NULL,
&test_master, NULL))
return ok;
return 1;
}
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