-int\r
-main ()\r
-{\r
- return 0;\r
-}\r
+/*
+ This file is part of GNUnet
+ (C) 2014 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 secretsharing/gnunet-secretsharing-profiler.c
+ * @brief profiling tool for distributed key generation and decryption
+ * @author Florian Dold
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_secretsharing_service.h"
+#include "gnunet_testbed_service.h"
+
+/**
+ * How many peers should participate in the key generation?
+ */
+static unsigned int num_peers = 3;
+
+/**
+ * What should the threshold for then key be?
+ */
+static unsigned int threshold = 2;
+
+/**
+ * Should we try to decrypt a value after the key generation?
+ */
+static unsigned int decrypt = GNUNET_NO;
+
+/**
+ * When would we like to see the operation finished?
+ */
+static struct GNUNET_TIME_Relative timeout;
+
+/**
+ * When should dkg communication start?
+ */
+static struct GNUNET_TIME_Relative delay;
+
+/**
+ * Handles for secretsharing sessions.
+ */
+static struct GNUNET_SECRETSHARING_Session **session_handles;
+
+static struct GNUNET_SECRETSHARING_DecryptionHandle **decrypt_handles;
+
+/**
+ * Shares we got from the distributed key generation.
+ */
+static struct GNUNET_SECRETSHARING_Share **shares;
+
+static struct GNUNET_SECRETSHARING_PublicKey common_pubkey;
+
+
+static unsigned int num_connected_sessions;
+
+static unsigned int num_connected_decrypt;
+
+/**
+ * Handles to the running peers.
+ * When peers[i] is NULL, the i-th peer has stopped.
+ */
+static struct GNUNET_TESTBED_Peer **peers;
+
+static struct GNUNET_PeerIdentity *peer_ids;
+
+static unsigned int num_retrieved_peer_ids;
+
+static unsigned int num_generated;
+
+static unsigned int num_decrypted;
+
+static struct GNUNET_HashCode session_id;
+
+static int verbose;
+
+static struct GNUNET_SECRETSHARING_Plaintext reference_plaintext;
+
+static struct GNUNET_SECRETSHARING_Ciphertext ciphertext;
+
+static struct GNUNET_TIME_Absolute dkg_start;
+
+static struct GNUNET_TIME_Absolute dkg_deadline;
+
+
+static struct GNUNET_TIME_Absolute decrypt_start;
+
+static struct GNUNET_TIME_Absolute decrypt_deadline;
+
+/**
+ * Connect operations, one for every peer.
+ */
+static struct GNUNET_TESTBED_Operation **connect_ops;
+
+/**
+ * Are we performing a shutdown right now?
+ */
+static int in_shutdown;
+
+
+/**
+ * Signature of the event handler function called by the
+ * respective event controller.
+ *
+ * @param cls closure
+ * @param event information about the event
+ */
+static void
+controller_cb (void *cls,
+ const struct GNUNET_TESTBED_EventInformation *event)
+{
+ GNUNET_assert (0);
+}
+
+
+/**
+ * Callback to be called when a service connect operation is completed
+ *
+ * @param cls the callback closure from functions generating an operation
+ * @param op the operation that has been finished
+ * @param ca_result the service handle returned from GNUNET_TESTBED_ConnectAdapter()
+ * @param emsg error message in case the operation has failed; will be NULL if
+ * operation has executed successfully.
+ */
+static void
+session_connect_complete (void *cls,
+ struct GNUNET_TESTBED_Operation *op,
+ void *ca_result,
+ const char *emsg)
+{
+
+ if (NULL != emsg)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "testbed connect emsg: %s\n",
+ emsg);
+ GNUNET_assert (0);
+ }
+
+ num_connected_sessions++;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "dkg: session connect complete\n");
+
+ if (num_connected_sessions == num_peers)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "dkg: all peers connected\n");
+ }
+}
+
+
+/**
+ * Callback to be called when a service connect operation is completed
+ *
+ * @param cls the callback closure from functions generating an operation
+ * @param op the operation that has been finished
+ * @param ca_result the service handle returned from GNUNET_TESTBED_ConnectAdapter()
+ * @param emsg error message in case the operation has failed; will be NULL if
+ * operation has executed successfully.
+ */
+static void
+decrypt_connect_complete (void *cls,
+ struct GNUNET_TESTBED_Operation *op,
+ void *ca_result,
+ const char *emsg)
+{
+
+ if (NULL != emsg)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "testbed connect emsg: %s\n",
+ emsg);
+ GNUNET_assert (0);
+ }
+
+ num_connected_decrypt++;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "decrypt: session connect complete\n");
+
+ if (num_connected_decrypt == num_peers)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "decrypt: all peers connected\n");
+ }
+}
+
+
+/**
+ * Called when a decryption has succeeded.
+ *
+ * @param cls Plaintext
+ * @param plaintext Plaintext
+ */
+static void decrypt_cb (void *cls,
+ const struct GNUNET_SECRETSHARING_Plaintext *plaintext)
+{
+ struct GNUNET_SECRETSHARING_DecryptionHandle **dhp = cls;
+ unsigned int n = dhp - decrypt_handles;
+ num_decrypted++;
+
+ *dhp = NULL;
+
+ // we should still be connected if this is called
+ GNUNET_assert (NULL != connect_ops[n]);
+
+ GNUNET_TESTBED_operation_done (connect_ops[n]);
+
+ if (NULL == plaintext)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "decrypt failed for peer %u\n", n);
+ return;
+ }
+ else if (0 == memcmp (&reference_plaintext, plaintext, sizeof (struct GNUNET_SECRETSHARING_Plaintext)))
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "decrypt got correct result for peer %u\n", n);
+ else
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "decrypt got wrong result for peer %u\n", n);
+
+ if (num_decrypted == num_peers)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "every peer decrypted\n");
+ GNUNET_SCHEDULER_shutdown ();
+ }
+
+ *dhp = NULL;
+}
+
+
+
+/**
+ * Adapter function called to establish a connection to
+ * a service.
+ *
+ * @param cls closure
+ * @param cfg configuration of the peer to connect to; will be available until
+ * GNUNET_TESTBED_operation_done() is called on the operation returned
+ * from GNUNET_TESTBED_service_connect()
+ * @return service handle to return in 'op_result', NULL on error
+ */
+static void *
+decrypt_connect_adapter (void *cls,
+ const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ struct GNUNET_SECRETSHARING_DecryptionHandle **hp = cls;
+ unsigned int n = hp - decrypt_handles;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "decrypt connect adapter, %d peers\n",
+ num_peers);
+ *hp = GNUNET_SECRETSHARING_decrypt (cfg, shares[n], &ciphertext,
+ decrypt_start, decrypt_deadline,
+ decrypt_cb,
+ hp);
+
+ return *hp;
+}
+
+
+/**
+ * Adapter function called to destroy a connection to
+ * a service.
+ *
+ * @param cls closure
+ * @param op_result service handle returned from the connect adapter
+ */
+static void
+decrypt_disconnect_adapter(void *cls, void *op_result)
+{
+ struct GNUNET_SECRETSHARING_DecryptionHandle **dh = cls;
+ unsigned int n = dh - decrypt_handles;
+
+ GNUNET_assert (*dh == decrypt_handles[n]);
+
+ if (NULL != *dh)
+ {
+ GNUNET_SECRETSHARING_decrypt_cancel (*dh);
+ *dh = NULL;
+ }
+
+ GNUNET_assert (NULL != connect_ops[n]);
+ connect_ops[n] = NULL;
+}
+
+
+static void
+secret_ready_cb (void *cls,
+ struct GNUNET_SECRETSHARING_Share *my_share,
+ struct GNUNET_SECRETSHARING_PublicKey *public_key,
+ unsigned int num_ready_peers,
+ struct GNUNET_PeerIdentity *ready_peers)
+{
+ struct GNUNET_SECRETSHARING_Session **sp = cls;
+ unsigned int n = sp - session_handles;
+ char pubkey_str[1024];
+ char *ret;
+
+ num_generated++;
+ *sp = NULL;
+ shares[n] = my_share;
+ if (NULL == my_share)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "key generation failed for peer #%u\n", n);
+ }
+ else
+ {
+ ret = GNUNET_STRINGS_data_to_string (public_key, sizeof *public_key, pubkey_str, 1024);
+ GNUNET_assert (NULL != ret);
+ *ret = '\0';
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "key generation successful for peer #%u, pubkey %s\n", n,
+ pubkey_str);
+
+ /* we're the first to get the key -> store it */
+ if (num_generated == 1)
+ {
+ common_pubkey = *public_key;
+ }
+ else if (0 != memcmp (public_key, &common_pubkey, sizeof (struct GNUNET_SECRETSHARING_PublicKey)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "generated public keys do not match\n");
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+ }
+
+ // we should still be connected
+ GNUNET_assert (NULL != connect_ops[n]);
+
+ // disconnect from the service, will call the disconnect callback
+ GNUNET_TESTBED_operation_done (connect_ops[n]);
+
+}
+
+
+/**
+ * Adapter function called to establish a connection to
+ * a service.
+ *
+ * @param cls closure
+ * @param cfg configuration of the peer to connect to; will be available until
+ * GNUNET_TESTBED_operation_done() is called on the operation returned
+ * from GNUNET_TESTBED_service_connect()
+ * @return service handle to return in 'op_result', NULL on error
+ */
+static void *
+session_connect_adapter (void *cls,
+ const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ struct GNUNET_SECRETSHARING_Session **sp = cls;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "connect adapter, %d peers\n",
+ num_peers);
+ *sp = GNUNET_SECRETSHARING_create_session (cfg,
+ num_peers,
+ peer_ids,
+ &session_id,
+ dkg_start,
+ dkg_deadline,
+ threshold,
+ &secret_ready_cb, sp);
+ return *sp;
+}
+
+
+
+/**
+ * Adapter function called to destroy a connection to
+ * a service.
+ *
+ * @param cls closure
+ * @param op_result service handle returned from the connect adapter
+ */
+static void
+session_disconnect_adapter (void *cls, void *op_result)
+{
+ struct GNUNET_SECRETSHARING_Session **sp = cls;
+ unsigned int n = (sp - session_handles);
+
+ GNUNET_assert (*sp == session_handles[n]);
+
+ if (NULL != *sp)
+ {
+ GNUNET_SECRETSHARING_session_destroy (*sp);
+ *sp = NULL;
+ }
+
+ GNUNET_assert (NULL != connect_ops[n]);
+ connect_ops[n] = NULL;
+
+ if (GNUNET_YES == in_shutdown)
+ return;
+
+ // all peers received their secret
+ if (num_generated == num_peers)
+ {
+ int i;
+
+ // only do decryption if requested by the user
+ if (GNUNET_NO == decrypt)
+ {
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+
+ decrypt_start = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
+ decrypt_deadline = GNUNET_TIME_absolute_add (decrypt_start, timeout);
+
+ // compute g^42 as the plaintext which we will decrypt and then
+ // cooperatively decrypt
+ GNUNET_SECRETSHARING_plaintext_generate_i (&reference_plaintext, 42);
+ GNUNET_SECRETSHARING_encrypt (&common_pubkey, &reference_plaintext, &ciphertext);
+
+ for (i = 0; i < num_peers; i++)
+ connect_ops[i] =
+ GNUNET_TESTBED_service_connect (NULL, peers[i], "secretsharing", &decrypt_connect_complete, NULL,
+ &decrypt_connect_adapter, &decrypt_disconnect_adapter, &decrypt_handles[i]);
+ }
+}
+
+
+/**
+ * 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_PeerIdentity *p;
+ int i;
+
+ GNUNET_assert (NULL == emsg);
+
+ p = (struct GNUNET_PeerIdentity *) cb_cls;
+
+ if (pinfo->pit == GNUNET_TESTBED_PIT_IDENTITY)
+ {
+ *p = *pinfo->result.id;
+ num_retrieved_peer_ids++;
+ if (num_retrieved_peer_ids == num_peers)
+ for (i = 0; i < num_peers; i++)
+ connect_ops[i] =
+ GNUNET_TESTBED_service_connect (NULL, peers[i], "secretsharing", session_connect_complete, NULL,
+ session_connect_adapter, session_disconnect_adapter, &session_handles[i]);
+ }
+ else
+ {
+ GNUNET_assert (0);
+ }
+
+ GNUNET_TESTBED_operation_done (op);
+}
+
+
+/**
+ * Signature of the main function of a task.
+ *
+ * @param cls closure
+ * @param tc context information (why was this task triggered now)
+ */
+static void
+handle_shutdown (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ in_shutdown = GNUNET_YES;
+
+ if (NULL != connect_ops)
+ {
+ unsigned int i;
+ for (i = 0; i < num_peers; i++)
+ if (NULL != connect_ops[i])
+ {
+ // the disconnect callback will set the op to NULL
+ GNUNET_TESTBED_operation_done (connect_ops[i]);
+ }
+ GNUNET_free (connect_ops);
+ }
+
+ // killing the testbed operation will take care of remaining
+ // service handles in the disconnect callback
+}
+
+
+/**
+ * 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 started_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
+ */
+static void
+test_master (void *cls,
+ struct GNUNET_TESTBED_RunHandle *h,
+ unsigned int num_peers,
+ struct GNUNET_TESTBED_Peer **started_peers,
+ unsigned int links_succeeded,
+ unsigned int links_failed)
+{
+ int i;
+
+ GNUNET_log_setup ("gnunet-secretsharing-profiler", "INFO", NULL);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "test master\n");
+
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
+ &handle_shutdown, NULL);
+
+ peers = started_peers;
+
+ peer_ids = GNUNET_malloc (num_peers * sizeof (struct GNUNET_PeerIdentity));
+
+ session_handles = GNUNET_new_array (num_peers, struct GNUNET_SECRETSHARING_Session *);
+ decrypt_handles = GNUNET_new_array (num_peers, struct GNUNET_SECRETSHARING_DecryptionHandle *);
+ connect_ops = GNUNET_new_array (num_peers, struct GNUNET_TESTBED_Operation *);
+ shares = GNUNET_new_array (num_peers, struct GNUNET_SECRETSHARING_Share *);
+
+ for (i = 0; i < num_peers; i++)
+ {
+ // we do not store the returned operation, as peer_info_cb
+ // will receive it as a parameter and call GNUNET_TESTBED_operation_done.
+ GNUNET_TESTBED_peer_get_information (peers[i],
+ GNUNET_TESTBED_PIT_IDENTITY,
+ peer_info_cb,
+ &peer_ids[i]);
+ }
+}
+
+
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+ const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ static char *session_str = "gnunet-secretsharing/test";
+ char *topology;
+ int topology_cmp_result;
+
+ dkg_start = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
+ dkg_deadline = GNUNET_TIME_absolute_add (dkg_start, timeout);
+
+ if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg, "testbed", "OVERLAY_TOPOLOGY", &topology))
+ {
+ fprintf (stderr,
+ "'OVERLAY_TOPOLOGY' not found in 'testbed' config section, "
+ "seems like you passed the wrong configuration file\n");
+ return;
+ }
+
+ topology_cmp_result = strcasecmp (topology, "NONE");
+ GNUNET_free (topology);
+
+ if (0 == topology_cmp_result)
+ {
+ fprintf (stderr,
+ "'OVERLAY_TOPOLOGY' set to 'NONE', "
+ "seems like you passed the wrong configuration file\n");
+ return;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "running gnunet-secretsharing-profiler\n");
+
+ GNUNET_CRYPTO_hash (session_str, strlen (session_str), &session_id);
+
+ (void) GNUNET_TESTBED_test_run ("gnunet-secretsharing-profiler",
+ cfgfile,
+ num_peers,
+ 0,
+ controller_cb,
+ NULL,
+ test_master,
+ NULL);
+}
+
+
+int
+main (int argc, char **argv)
+{
+ static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+ { 'n', "num-peers", NULL,
+ gettext_noop ("number of peers in consensus"),
+ GNUNET_YES, &GNUNET_GETOPT_set_uint, &num_peers },
+ { 'D', "delay", NULL,
+ gettext_noop ("dkg start delay"),
+ GNUNET_YES, &GNUNET_GETOPT_set_relative_time, &delay },
+ { 't', "timeout", NULL,
+ gettext_noop ("dkg timeout"),
+ GNUNET_YES, &GNUNET_GETOPT_set_relative_time, &timeout },
+ { 'k', "threshold", NULL,
+ gettext_noop ("threshold"),
+ GNUNET_YES, &GNUNET_GETOPT_set_uint, &threshold },
+ { 'd', "decrypt", NULL,
+ gettext_noop ("also profile decryption"),
+ GNUNET_NO, &GNUNET_GETOPT_set_one, &decrypt },
+ { 'V', "verbose", NULL,
+ gettext_noop ("be more verbose (print received values)"),
+ GNUNET_NO, &GNUNET_GETOPT_set_one, &verbose },
+ GNUNET_GETOPT_OPTION_END
+ };
+ delay = GNUNET_TIME_UNIT_ZERO;
+ timeout = GNUNET_TIME_UNIT_MINUTES;
+ GNUNET_PROGRAM_run2 (argc, argv, "gnunet-secretsharing-profiler",
+ "help",
+ options, &run, NULL, GNUNET_YES);
+ return 0;
+}
+
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