/**
* Number of peers which should perform a PUT out of 100 peers
*/
-#define PUT_PROBABILITY 100
+#define PUT_PROBABILITY 50
+#if ENABLE_MALICIOUS
/**
- * Percentage of peers that should act maliciously.
- * These peers will never start PUT/GET request.
- * n_active and n_malicious should not intersect.
+ * Number of peers which should act as malicious peers
*/
-#define MALICIOUS_PEERS 0
+#define MALICIOUS_PROBABILITY 20
+
+/**
+ * Context for a peer which should act maliciously.
+ */
+struct MaliciousContext;
+#endif
+
/**
* Configuration
*/
struct Context
{
-
/**
* The testbed peer this context belongs to
*/
* Active context; NULL if this peer is not an active peer
*/
struct ActiveContext *ac;
+
+#if ENABLE_MALICIOUS
+ /**
+ * Malicious context; NULL if this peer is NOT malicious.
+ */
+ struct MaliciousContext *mc;
+#endif
};
* Handler to the DHT service
*/
struct GNUNET_DHT_Handle *dht;
+
+ /**
+ * Handler to malicious api
+ */
+ struct GNUNET_DHT_ActMaliciousHandle *dht_malicious;
};
/**
*/
struct Context **malicious_peer_contexts = NULL;
+/**
+ * Context for a peer which should act maliciously.
+ */
+struct Malicious_Context
+{
+ /**
+ * The linked peer context
+ */
+ struct Context *ctx;
+
+ /**
+ * Handler to the DHT service
+ */
+ struct GNUNET_DHT_Handle *dht;
+};
+
+/**
+ * Array of malicious peers.
+ */
+static struct MaliciousContext *a_mc;
+
+/**
+ * Number or malicious peers.
+ */
+static unsigned int n_malicious;
+
#endif
/**
*/
static unsigned int num_peers;
-#if ENABLE_MALICIOUS
-/**
- * Number or malicious peers.
- */
-static unsigned int n_malicious;
-#endif
-
/**
* Number of active peers
*/
*/
static int in_shutdown = 0;
+/**
+ * Total number of times to check if circle is formed or not.
+ */
+static unsigned int tries;
+
/**
* Task that collects successor statistics from all the peers.
* @param cls
static void
collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+/**
+ * Connect to DHT services of active peers
+ */
+static void
+start_profiling();
+
/**
* Shutdown task. Cleanup all resources and operations.
*
dht_connect (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg)
{
n_dht++;
+ DEBUG("\n Inside dht_connect , n_dht = %u",n_dht);
return GNUNET_DHT_connect (cfg, 10);
}
-/**
- * Connect to DHT services of active peers
- */
-static void
-start_profiling();
-
-
/**
* Adapter function called to destroy a connection to
* a service.
}
}
-
/**
* Connect to DHT services of active peers
*/
{
struct Context *ctx;
unsigned int i;
-
+
DEBUG("GNUNET_TESTBED_service_connect \n");
GNUNET_break (GNUNET_YES != in_shutdown);
for(i = 0; i < n_active; i++)
}
}
+#if ENABLE_MALICIOUS
+/**
+ * Count of total number of malicious peers.
+ */
+static unsigned int count_malicious;
+
+/**
+ * Continuation of GNUNET_DHT_act_malicious
+ * @param cls Malicious context
+ * @param success #GNUNET_OK if the ACT_MALICIOUS was transmitted,
+ * #GNUNET_NO on timeout,
+ * #GNUNET_SYSERR on disconnect from service
+ * after the ACT_MALICIOUS message was transmitted
+ * (so we don't know if it was received or not)
+ */
+static void
+act_malicious_cont (void *cls, int success)
+{
+ struct MaliciousContext *mc = cls;
+ struct Context *ctx = mc->ctx;
+
+ GNUNET_TESTBED_operation_done (ctx->op);
+ ctx->op = NULL;
+ return;
+}
+
+
+/**
+ * Call malicious API for all the malicious peers.
+ * @param cls the malicious context.
+ * @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.
+ */
+void
+dht_set_malicious(void *cls,
+ struct GNUNET_TESTBED_Operation *op,
+ void *ca_result,
+ const char *emsg)
+{
+ struct MaliciousContext *mc = cls;
+ struct Context *ctx = mc->ctx;
+
+ GNUNET_assert (NULL != ctx);
+ GNUNET_assert (NULL != ctx->op);
+ GNUNET_assert (ctx->op == op);
+ mc->dht = (struct GNUNET_DHT_Handle *) ca_result;
+ if (NULL != emsg)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Connection to DHT service failed: %s\n", emsg);
+ GNUNET_TESTBED_operation_done (ctx->op); /* Calls dht_disconnect_malicious() */
+ ctx->op = NULL;
+ return;
+ }
+ mc->dht_malicious = GNUNET_DHT_act_malicious(mc->dht, 1, act_malicious_cont, mc);
+}
+
+
+/**
+ * Adapter function called to destroy a connection to
+ * a service.
+ *
+ * @param cls the active context
+ * @param op_result service handle returned from the connect adapter
+ */
+static void
+dht_disconnect_malicious (void *cls, void *op_result)
+{
+ struct MaliciousContext *mc = cls;
+ count_malicious++;
+ GNUNET_assert (NULL != mc->dht);
+ GNUNET_assert (mc->dht == op_result);
+ GNUNET_DHT_disconnect (mc->dht);
+ mc->dht = NULL;
+ mc->ctx->op = NULL;
+ n_dht--;
+
+ if (0 != n_dht)
+ return;
+
+ if(n_malicious == count_malicious)
+ {
+ DEBUG("\n Call start_profiling()");
+ start_profiling();
+ }
+}
+
+
+/**
+ * Set the malicious variable in peer malicious context.
+ */
+static void
+set_malicious()
+{
+ unsigned int i;
+ DEBUG ("Setting %u peers malicious",n_malicious);
+
+ for(i = 0; i < n_malicious; i++)
+ {
+ DEBUG("\n Inside loop , i = %u",i);
+ struct MaliciousContext *mc = &a_mc[i];
+ mc->ctx->op =
+ GNUNET_TESTBED_service_connect (mc->ctx,
+ mc->ctx->peer,
+ "dht",
+ &dht_set_malicious, mc,
+ &dht_connect,
+ &dht_disconnect_malicious,
+ mc);
+ }
+}
+
+#endif
+
+
+/**
+ * Start collecting relevant statistics. If ENABLE_MALICIOUS set, first
+ * set the malicious peers. If not, then start with PUT operation on active
+ * peers.
+ */
+static void
+start_func()
+{
+#if ENABLE_MALICIOUS
+ set_malicious();
+ return;
+#endif
+ start_profiling();
+}
+
+
+/**
+ * Remove entry from successor peer hashmap.
+ * @param cls closure
+ * @param key current public key
+ * @param value value in the hash map
+ * @return #GNUNET_YES if we should continue to iterate,
+ * #GNUNET_NO if not.
+ */
static int
hashmap_iterate_remove(void *cls,
const struct GNUNET_HashCode *key,
void *value)
{
- GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(successor_peer_hashmap, key, value));
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_remove(successor_peer_hashmap, key, value));
return GNUNET_YES;
}
-static unsigned int tries;
-
/**
* Stats callback. Iterate over the hashmap and check if all th peers form
* a virtual ring topology.
struct GNUNET_HashCode *key;
int count;
-
/* Don't schedule the task till we are looking for circle here. */
successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
GNUNET_TESTBED_operation_done (successor_stats_op);
successor_stats_op = NULL;
if (0 == max_searches)
{
- start_profiling();
+ start_func();
return;
}
+
+ GNUNET_assert (NULL != start_key);
start_val =
(struct GNUNET_HashCode *) GNUNET_CONTAINER_multihashmap_get(successor_peer_hashmap,
start_key);
-
+
val = start_val;
for (count = 0; count < num_peers; count++)
{
successor_peer_hashmap = GNUNET_CONTAINER_multihashmap_create (num_peers,
GNUNET_NO);
- //TODO:Check if comparison is correct.
if ((start_val == val) && (count == num_peers))
{
DEBUG("CIRCLE COMPLETED after %u tries", tries);
- //FIXME: FREE HASHMAP.
- //FIXME: If circle is done, then check that finger table of all the peers
- //are fill atleast O(log N) and then start with the experiments.
if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
- start_profiling();
-
+ {
+ start_func();
+ }
return;
}
else
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Maximum tries %u exceeded while checking successor TOTAL TRIES %u"
- " cirle formation. Exiting\n",
+ " circle formation. Exiting\n",
max_searches,tries);
if (GNUNET_SCHEDULER_NO_TASK != successor_stats_task)
{
}
if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
{
- start_profiling();
+ start_func();
}
return;
static const char *key_string = "XDHT";
if (0 == max_searches)
return GNUNET_OK;
-
+
if (0 == strncmp (key_string, name, strlen (key_string)))
{
char *my_id_str;
succ_key = GNUNET_new(struct GNUNET_HashCode);
GNUNET_CRYPTO_hash (truncated_successor_str, sizeof(truncated_successor_str),succ_key);
-
+
if (0 == flag)
{
+ GNUNET_assert(NULL != my_id_key);
start_key = my_id_key;
+ GNUNET_assert(NULL != start_key);
flag = 1;
}
- /* FIXME: GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE do not free the value
- which is replaced, need to free it. */
GNUNET_CONTAINER_multihashmap_put (successor_peer_hashmap,
my_id_key, (void *)succ_key,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
}
+
return GNUNET_OK;
}
}
-#if ENABLE_MALICIOUS
-/**
- * Set the malicious variable in peer malicious context.
- */
-static void
-set_malicious()
-{
- unsigned int i;
- DEBUG ("Setting %u peers malicious");
- for(i = 0; i < n_malicious; i++)
- {
- struct MaliciousContext *mc = &a_mc[i];
- mc->ctx->op =
- GNUNET_TESTBED_service_connect (ac->ctx,
- ac->ctx->peer,
- "dht",
- &dht_set_malicious, mc,
- &dht_connect,
- &dht_finish,
- mc);
- }
-}
-#endif
-
-
/**
* Callback called when DHT service on the peer is started
*
DEBUG("Peers Started = %d; num_peers = %d \n", peers_started, num_peers);
if (GNUNET_SCHEDULER_NO_TASK == successor_stats_task && peers_started == num_peers)
{
-#if ENABLE_MALICIOUS
- set_malicious();
-#endif
-
DEBUG("successor_stats_task \n");
struct Collect_Stat_Context *collect_stat_cls = GNUNET_new(struct Collect_Stat_Context);
collect_stat_cls->service_connect_ctx = cls;
collect_stat_cls->op = op;
+
successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay_stats,
&collect_stats,
collect_stat_cls);
{
unsigned int cnt;
unsigned int ac_cnt;
-
+ unsigned int malicious_peers;
testbed_handles = peers;
if (NULL == peers)
{
return;
}
+ a_ac = GNUNET_malloc (n_active * sizeof (struct ActiveContext));
+ ac_cnt = 0;
+
#if ENABLE_MALICIOUS
- if(PUT_PROBABILITY + MALICIOUS_PEERS > 100)
+ if(PUT_PROBABILITY + MALICIOUS_PROBABILITY > 100)
{
DEBUG ("Reduce either number of malicious peer or active peers. ");
GNUNET_SCHEDULER_shutdown ();
}
/* Select the peers which should act maliciously. */
- n_malicious = num_peers * MALICIOUS_PEERS / 100;
+ n_malicious = num_peers * MALICIOUS_PROBABILITY / 100;
+
+ a_mc = GNUNET_malloc (n_malicious * sizeof (struct MaliciousContext));
+ malicious_peers = 0;
- /* Select n_malicious peers and ensure that those are not active peers.
- keep all malicious peer at one place, and call act malicious for all
- those peers. */
+ for (cnt = 0; cnt < num_peers && malicious_peers < n_malicious; cnt++)
+ {
+ if (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 100) >=
+ MALICIOUS_PROBABILITY)
+ continue;
+ a_ctx[cnt].mc = &a_mc[malicious_peers];
+ a_mc[malicious_peers].ctx = &a_ctx[cnt];
+ malicious_peers++;
+ }
+ n_malicious = malicious_peers;
+ INFO ("Malicious Peers: %u\n",malicious_peers);
#endif
ac_cnt = 0;
for (cnt = 0; cnt < num_peers && ac_cnt < n_active; cnt++)
{
- if (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 100) >=
- PUT_PROBABILITY)
+ if ((GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 100) >=
+ PUT_PROBABILITY) || (a_ctx[ac_cnt].mc != NULL))
continue;
+
a_ctx[cnt].ac = &a_ac[ac_cnt];
a_ac[ac_cnt].ctx = &a_ctx[cnt];
ac_cnt++;
gettext_noop ("number of peers to start"),
1, &GNUNET_GETOPT_set_uint, &num_peers},
{'s', "searches", "COUNT",
- gettext_noop ("maximum number of times we try to search for successor circle formation (default is 1)"),
+ gettext_noop ("maximum number of times we try to search for successor circle formation (0 for R5N)"),
1, &GNUNET_GETOPT_set_uint, &max_searches},
{'H', "hosts", "FILENAME",
gettext_noop ("name of the file with the login information for the testbed"),
projects / oweals / gnunet.git / blobdiff