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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_cadet_service.h"
+#include "gnunet_peerinfo_service.h"
#include "gnunet_nse_service.h"
#include "rps.h"
+#include "rps-test_util.h"
#include "gnunet-service-rps_sampler.h"
// TODO align message structs
-// (TODO api -- possibility of getting weak random peer immideately)
+// TODO connect to friends
-// TODO malicious peer
+// TODO store peers somewhere persistent
-// TODO connect to friends
+// TODO blacklist? (-> mal peer detection on top of brahms)
-// TODO store peers somewhere
+// TODO API request_cancel
-// TODO ignore list?
+// TODO don't pass peermap all the time
// hist_size_init, hist_size_max
/**
* Struct used to store the context of a connected client.
*/
-struct client_ctx
+struct ClientContext
{
/**
* The message queue to communicate with the client.
/**
* We set this bit when we can be sure the other peer is/was live.
*/
- LIVING = 0x10
+ VALID = 0x10,
+
+ /**
+ * We set this bit when we are going to destroy the channel to this peer.
+ * When cleanup_channel is called, we know that we wanted to destroy it.
+ * Otherwise the channel to the other peer was destroyed.
+ */
+ TO_DESTROY = 0x20,
};
struct PeerContext
{
/**
- * In own gossip/sampler list, in other's gossip/sampler list
+ * Flags indicating status of peer
*/
uint32_t peer_flags;
/**
- * The gossiped list of peers.
+ * Name to log view to
+ */
+static char *file_name_view_log;
+
+/**
+ * The "local view" containing peers we learned from gossip and history
*/
-static struct GNUNET_PeerIdentity *gossip_list;
+static struct GNUNET_CONTAINER_MultiPeerMap *view;
/**
- * Size of the gossiped list
+ * An array containing the peers of the local view.
+ *
+ * This is created every time we send a pull reply if it has changed since the
+ * last pull reply we sent.
*/
-//static unsigned int gossip_list_size;
-static uint32_t gossip_list_size;
+static struct GNUNET_PeerIdentity *view_array;
/**
* The size of sampler we need to be able to satisfy the Brahms protocol's
* need of random peers.
*
- * This is directly taken as the #gossip_list_size on update of the
- * #gossip_list
- *
* This is one minimum size the sampler grows to.
*/
static unsigned int sampler_size_est_need;
/**
- * Percentage of total peer number in the gossip list
+ * Percentage of total peer number in the view
* to send random PUSHes to
*/
static float alpha;
/**
- * Percentage of total peer number in the gossip list
+ * Percentage of total peer number in the view
* to send random PULLs to
*/
static float beta;
*/
static struct GNUNET_CADET_Handle *cadet_handle;
+/**
+ * Handler to PEERINFO.
+ */
+static struct GNUNET_PEERINFO_Handle *peerinfo_handle;
+
+/**
+ * Handle for cancellation of iteration over peers.
+ */
+struct GNUNET_PEERINFO_NotifyContext *peerinfo_notify_handle;
+
/**
* Request counter.
/**
- * List with the peers we sent requests to.
+ * Number of history update tasks.
*/
-struct GNUNET_PeerIdentity *pending_pull_reply_list;
+uint32_t num_hist_update_tasks;
+
/**
- * Size of #pending_pull_reply_list.
+ * Closure used to pass the client and the id to the callback
+ * that replies to a client's request
*/
-uint32_t pending_pull_reply_list_size;
+struct ReplyCls
+{
+ /**
+ * The identifier of the request
+ */
+ uint32_t id;
+
+ /**
+ * The client handle to send the reply to
+ */
+ struct GNUNET_SERVER_Client *client;
+};
+#ifdef ENABLE_MALICIOUS
/**
- * Number of history update tasks.
+ * Type of malicious peer
+ *
+ * 0 Don't act malicious at all - Default
+ * 1 Try to maximise representation
+ * 2 Try to partition the network
+ * 3 Combined attack
*/
-uint32_t num_hist_update_tasks;
+uint32_t mal_type = 0;
+
+/**
+ * Other malicious peers
+ */
+static struct GNUNET_PeerIdentity *mal_peers = NULL;
+
+/**
+ * Hashmap of malicious peers used as set.
+ * Used to more efficiently check whether we know that peer.
+ */
+static struct GNUNET_CONTAINER_MultiPeerMap *mal_peer_set = NULL;
+
+/**
+ * Number of other malicious peers
+ */
+static uint32_t num_mal_peers = 0;
+
+
+/**
+ * If type is 2 This struct is used to store the attacked peers in a DLL
+ */
+struct AttackedPeer
+{
+ /**
+ * DLL
+ */
+ struct AttackedPeer *next;
+ struct AttackedPeer *prev;
+
+ /**
+ * PeerID
+ */
+ struct GNUNET_PeerIdentity peer_id;
+};
+
+/**
+ * If type is 2 this is the DLL of attacked peers
+ */
+static struct AttackedPeer *att_peers_head = NULL;
+static struct AttackedPeer *att_peers_tail = NULL;
+
+/**
+ * This index is used to point to an attacked peer to
+ * implement the round-robin-ish way to select attacked peers.
+ */
+static struct AttackedPeer *att_peer_index = NULL;
+
+/**
+ * Hashmap of attacked peers used as set.
+ * Used to more efficiently check whether we know that peer.
+ */
+static struct GNUNET_CONTAINER_MultiPeerMap *att_peer_set = NULL;
+
+/**
+ * Number of attacked peers
+ */
+static uint32_t num_attacked_peers = 0;
+
+
+/**
+ * If type is 1 this is the attacked peer
+ */
+static struct GNUNET_PeerIdentity attacked_peer;
+
+/**
+ * The limit of PUSHes we can send in one round.
+ * This is an assumption of the Brahms protocol and either implemented
+ * via proof of work
+ * or
+ * assumend to be the bandwidth limitation.
+ */
+static uint32_t push_limit = 10000;
+#endif /* ENABLE_MALICIOUS */
/***********************************************************************
*/
#define unset_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags &= (~mask))
+/**
+ * Clean the send channel of a peer
+ */
+void
+peer_clean (const struct GNUNET_PeerIdentity *peer);
/**
"Removing peer %s from list at %p\n",
GNUNET_i2s (peer),
tmp);
- print_peer_list (tmp, *list_size);
for ( i = 0 ; i < *list_size ; i++ )
{
/**;
* Choose the r_index of the peer we want to return
- * at random from the interval of the gossip list
+ * at random from the interval of the view
*/
r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
tmp_size);
/**;
* Choose the r_index of the peer we want to return
- * at random from the interval of the gossip list
+ * at random from the interval of the view
*/
r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
tmp_size);
ctx->recv_channel = NULL;
ctx->outstanding_ops = NULL;
ctx->num_outstanding_ops = 0;
+ ctx->is_live_task = NULL;
+ ctx->peer_id = *peer;
(void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
}
/**
- * Put random peer from sampler into the gossip list as history update.
+ * Put random peer from sampler into the view as history update.
*/
void
hist_update (void *cls, struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
{
- GNUNET_assert (1 == num_peers);
+ unsigned int i;
+
+ for (i = 0; i < GNUNET_MIN (
+ sampler_size_est_need - GNUNET_CONTAINER_multipeermap_size (view),
+ num_peers); i++)
+ {
+ if (GNUNET_OK != GNUNET_CONTAINER_multipeermap_put (view,
+ &ids[i],
+ NULL,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Failed to put peer in peermap. (hist_update)\n");
+ }
+
+ /* Might want to check that we really updated the view */
+ if (NULL != view_array)
+ {
+ GNUNET_free (view_array);
+ view_array = NULL;
+ }
- if (gossip_list_size < sampler_size_est_need)
- GNUNET_array_append (gossip_list, gossip_list_size, *ids);
+ to_file (file_name_view_log,
+ "+%s\t(hist)",
+ GNUNET_i2s_full (ids));
+ }
if (0 < num_hist_update_tasks)
num_hist_update_tasks--;
{
struct GNUNET_PeerIdentity *peer;
+ /* Cancle is_live_task if still scheduled */
+ if (NULL != peer_ctx->is_live_task)
+ {
+ GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
+ peer_ctx->is_live_task = NULL;
+ }
+
peer = &peer_ctx->peer_id;
- set_peer_flag (peer_ctx, LIVING);
+ set_peer_flag (peer_ctx, VALID);
LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer %s is live\n", GNUNET_i2s (peer));
- if (0 != peer_ctx->num_outstanding_ops)
+ if (0 < peer_ctx->num_outstanding_ops)
{ /* Call outstanding operations */
unsigned int i;
- for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
+ for (i = 0 ; i < peer_ctx->num_outstanding_ops ; i++)
peer_ctx->outstanding_ops[i].op (peer_ctx->outstanding_ops[i].op_cls, peer);
GNUNET_array_grow (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, 0);
}
{
struct PeerContext *peer_ctx = (struct PeerContext *) cls;
- if (NULL != buf ||
- 0 != size)
+ peer_ctx->is_live_task = NULL;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Set ->is_live_task = NULL for peer %s\n",
+ GNUNET_i2s (&peer_ctx->peer_id));
+
+ if (NULL != buf
+ && 0 != size)
+ {
peer_is_live (peer_ctx);
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Problems establishing a connection to peer %s in order to check liveliness\n",
+ GNUNET_i2s (&peer_ctx->peer_id));
+ // TODO reschedule? cleanup?
+ }
//if (NULL != peer_ctx->is_live_task)
//{
// GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
// peer_ctx->is_live_task = NULL;
//}
- peer_ctx->is_live_task = NULL;
return 0;
}
get_channel (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
const struct GNUNET_PeerIdentity *peer)
{
- struct PeerContext *ctx;
+ struct PeerContext *peer_ctx;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to establish channel to peer %s\n",
- GNUNET_i2s (peer));
+ peer_ctx = get_peer_ctx (peer_map, peer);
- ctx = get_peer_ctx (peer_map, peer);
- if (NULL == ctx->send_channel)
+ if (NULL == peer_ctx->send_channel)
{
- ctx->send_channel = GNUNET_CADET_channel_create (cadet_handle,
- NULL,
- peer,
- GNUNET_RPS_CADET_PORT,
- GNUNET_CADET_OPTION_RELIABLE);
-
- /* If we don't know whether peer is live,
- * get notified when we know it is live. */
- if (NULL == ctx->recv_channel
- && NULL == ctx->is_live_task)
- {
- ctx->peer_id = *peer;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Get informed about peer %s getting live\n",
- GNUNET_i2s (peer));
- ctx->is_live_task =
- GNUNET_CADET_notify_transmit_ready (ctx->send_channel,
- GNUNET_NO,
- GNUNET_TIME_UNIT_FOREVER_REL,
- sizeof (struct GNUNET_MessageHeader),
- cadet_ntfy_tmt_rdy_cb,
- ctx);
- }
- // FIXME check whether this is NULL
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to establish channel to peer %s\n",
+ GNUNET_i2s (peer));
+
+ peer_ctx->send_channel =
+ GNUNET_CADET_channel_create (cadet_handle,
+ NULL,
+ peer,
+ GNUNET_RPS_CADET_PORT,
+ GNUNET_CADET_OPTION_RELIABLE);
- // do I have to explicitly put it in the peer_map?
- (void) GNUNET_CONTAINER_multipeermap_put
- (peer_map,
- peer,
- ctx,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
}
- return ctx->send_channel;
+ return peer_ctx->send_channel;
}
}
+/**
+ * Issue check whether peer is live
+ *
+ * @param peer_ctx the context of the peer
+ */
+void
+check_peer_live (struct PeerContext *peer_ctx)
+{
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Get informed about peer %s getting live\n",
+ GNUNET_i2s (&peer_ctx->peer_id));
+
+ if (NULL == peer_ctx->is_live_task &&
+ NULL == peer_ctx->send_channel)
+ {
+ (void) get_channel (peer_map, &peer_ctx->peer_id);
+ peer_ctx->is_live_task =
+ GNUNET_CADET_notify_transmit_ready (peer_ctx->send_channel,
+ GNUNET_NO,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ sizeof (struct GNUNET_MessageHeader),
+ cadet_ntfy_tmt_rdy_cb,
+ peer_ctx);
+ }
+ else if (NULL != peer_ctx->is_live_task)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Already waiting for notification\n");
+ else if (NULL != peer_ctx->send_channel)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Already have established channel to peer\n");
+}
+
+
/**
* Sum all time relatives of an array.
*/
/**
- * Insert PeerID in #gossip_list
+ * Insert PeerID in #view
*
* Called once we know a peer is live.
*/
void
-insert_in_gossip_list (void *cls, const struct GNUNET_PeerIdentity *peer)
+insert_in_view (void *cls, const struct GNUNET_PeerIdentity *peer)
{
- if (GNUNET_NO == in_arr (gossip_list, gossip_list_size, peer))
- GNUNET_array_append (gossip_list, gossip_list_size, *peer);
+ if (GNUNET_YES != GNUNET_CONTAINER_multipeermap_put (view,
+ peer,
+ NULL,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Failed to put peer into view. (insert_in_view)\n");
+ }
+
+ /* Might want to check whether we really modified the view */
+ if (NULL != view_array)
+ {
+ GNUNET_free (view_array);
+ view_array = NULL;
+ }
+
+ (void) get_channel (peer_map, peer);
}
/**
- * Check whether #insert_in_pull_list was already scheduled
+ * Check whether #insert_in_view was already scheduled
*/
int
-insert_in_gossip_list_scheduled (const struct PeerContext *peer_ctx)
+insert_in_view_scheduled (const struct PeerContext *peer_ctx)
{
unsigned int i;
for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
- if (insert_in_gossip_list == peer_ctx->outstanding_ops[i].op)
+ if (insert_in_view == peer_ctx->outstanding_ops[i].op)
return GNUNET_YES;
return GNUNET_NO;
}
void
insert_in_sampler (void *cls, const struct GNUNET_PeerIdentity *peer)
{
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Updating samplers with peer %s from insert_in_sampler()\n",
+ GNUNET_i2s (peer));
RPS_sampler_update (prot_sampler, peer);
RPS_sampler_update (client_sampler, peer);
}
{
unsigned int i;
- for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
+ for (i = 0 ; i < peer_ctx->num_outstanding_ops ; i++)
if (insert_in_sampler== peer_ctx->outstanding_ops[i].op)
return GNUNET_YES;
return GNUNET_NO;
}
+/**
+ * Add all peers in @a peer_array to @a peer_map used as set.
+ *
+ * @param peer_array array containing the peers
+ * @param num_peers number of peers in @peer_array
+ * @param peer_map the peermap to use as set
+ */
+static void
+add_peer_array_to_set (const struct GNUNET_PeerIdentity *peer_array,
+ unsigned int num_peers,
+ struct GNUNET_CONTAINER_MultiPeerMap *peer_map)
+{
+ unsigned int i;
+ if (NULL == peer_map)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Trying to add peers to an empty peermap.\n");
+ return;
+ }
+
+ for (i = 0; i < num_peers; i++)
+ {
+ GNUNET_CONTAINER_multipeermap_put (peer_map,
+ &peer_array[i],
+ NULL,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
+ }
+}
+
+
+/**
+ * Send a PULL REPLY to @a peer_id
+ *
+ * @param peer_id the peer to send the reply to.
+ * @param peer_ids the peers to send to @a peer_id
+ * @param num_peer_ids the number of peers to send to @a peer_id
+ */
+static void
+send_pull_reply (const struct GNUNET_PeerIdentity *peer_id,
+ const struct GNUNET_PeerIdentity *peer_ids,
+ unsigned int num_peer_ids)
+{
+ uint32_t send_size;
+ struct GNUNET_MQ_Handle *mq;
+ struct GNUNET_MQ_Envelope *ev;
+ struct GNUNET_RPS_P2P_PullReplyMessage *out_msg;
+
+ /* Compute actual size */
+ send_size = sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) +
+ num_peer_ids * sizeof (struct GNUNET_PeerIdentity);
+
+ if (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < send_size)
+ /* Compute number of peers to send
+ * If too long, simply truncate */
+ // TODO select random ones via permutation
+ // or even better: do good protocol design
+ send_size =
+ (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE -
+ sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
+ sizeof (struct GNUNET_PeerIdentity);
+ else
+ send_size = num_peer_ids;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "PULL REQUEST from peer %s received, going to send %u peers\n",
+ GNUNET_i2s (peer_id), send_size);
+
+ mq = get_mq (peer_map, peer_id);
+
+ ev = GNUNET_MQ_msg_extra (out_msg,
+ send_size * sizeof (struct GNUNET_PeerIdentity),
+ GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY);
+ out_msg->num_peers = htonl (send_size);
+ memcpy (&out_msg[1], peer_ids,
+ send_size * sizeof (struct GNUNET_PeerIdentity));
+
+ GNUNET_MQ_send (mq, ev);
+}
+
+
+/**
+ * This function is called on new peer_ids from 'external' sources
+ * (client seed, cadet get_peers(), ...)
+ *
+ * @param peer_id the new peer_id
+ */
+static void
+new_peer_id (const struct GNUNET_PeerIdentity *peer_id)
+{
+ struct PeerOutstandingOp out_op;
+ struct PeerContext *peer_ctx;
+
+ if (NULL != peer_id &&
+ 0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, peer_id))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Got peer_id %s (at %p, view size: %u)\n",
+ GNUNET_i2s (peer_id),
+ peer_id,
+ GNUNET_CONTAINER_multipeermap_size (view));
+
+ peer_ctx = get_peer_ctx (peer_map, peer_id);
+ if (GNUNET_YES != get_peer_flag (peer_ctx, VALID))
+ {
+ if (GNUNET_NO == insert_in_sampler_scheduled (peer_ctx))
+ {
+ out_op.op = insert_in_sampler;
+ out_op.op_cls = NULL;
+ GNUNET_array_append (peer_ctx->outstanding_ops,
+ peer_ctx->num_outstanding_ops,
+ out_op);
+ }
+
+ if (GNUNET_NO == insert_in_view_scheduled (peer_ctx))
+ {
+ out_op.op = insert_in_view;
+ out_op.op_cls = NULL;
+ GNUNET_array_append (peer_ctx->outstanding_ops,
+ peer_ctx->num_outstanding_ops,
+ out_op);
+ }
+
+ /* Trigger livelyness test on peer */
+ check_peer_live (peer_ctx);
+ }
+ // else...?
+
+ // send push/pull to each of those peers?
+ }
+}
+
+
/***********************************************************************
* /Util functions
***********************************************************************/
/**
* Function called by NSE.
*
- * Updates sizes of sampler list and gossip list and adapt those lists
+ * Updates sizes of sampler list and view and adapt those lists
* accordingly.
*/
void
* Sends those to the requesting client.
*/
void client_respond (void *cls,
- struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
+ struct GNUNET_PeerIdentity *peer_ids, uint32_t num_peers)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler returned %" PRIX32 " peers\n", num_peers);
struct GNUNET_MQ_Envelope *ev;
struct GNUNET_RPS_CS_ReplyMessage *out_msg;
- struct GNUNET_SERVER_Client *client;
+ struct ReplyCls *reply_cls = (struct ReplyCls *) cls;
uint32_t size_needed;
- struct client_ctx *cli_ctx;
+ struct ClientContext *cli_ctx;
- client = (struct GNUNET_SERVER_Client *) cls;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "sampler returned %" PRIu32 " peers\n",
+ num_peers);
size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
num_peers * sizeof (struct GNUNET_PeerIdentity);
num_peers * sizeof (struct GNUNET_PeerIdentity),
GNUNET_MESSAGE_TYPE_RPS_CS_REPLY);
out_msg->num_peers = htonl (num_peers);
+ out_msg->id = htonl (reply_cls->id);
memcpy (&out_msg[1],
- ids,
- num_peers * sizeof (struct GNUNET_PeerIdentity));
- GNUNET_free (ids);
-
- cli_ctx = GNUNET_SERVER_client_get_user_context (client, struct client_ctx);
- if ( NULL == cli_ctx ) {
- cli_ctx = GNUNET_new (struct client_ctx);
- cli_ctx->mq = GNUNET_MQ_queue_for_server_client (client);
- GNUNET_SERVER_client_set_user_context (client, cli_ctx);
+ peer_ids,
+ num_peers * sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_free (peer_ids);
+
+ cli_ctx = GNUNET_SERVER_client_get_user_context (reply_cls->client, struct ClientContext);
+ if (NULL == cli_ctx) {
+ cli_ctx = GNUNET_new (struct ClientContext);
+ cli_ctx->mq = GNUNET_MQ_queue_for_server_client (reply_cls->client);
+ GNUNET_SERVER_client_set_user_context (reply_cls->client, cli_ctx);
}
+ GNUNET_free (reply_cls);
+
GNUNET_MQ_send (cli_ctx->mq, ev);
}
*/
static void
handle_client_request (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+ struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
{
struct GNUNET_RPS_CS_RequestMessage *msg;
uint32_t num_peers;
uint32_t size_needed;
+ struct ReplyCls *reply_cls;
uint32_t i;
msg = (struct GNUNET_RPS_CS_RequestMessage *) message;
num_peers = ntohl (msg->num_peers);
- size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
+ size_needed = sizeof (struct GNUNET_RPS_CS_RequestMessage) +
num_peers * sizeof (struct GNUNET_PeerIdentity);
if (GNUNET_SERVER_MAX_MESSAGE_SIZE < size_needed)
for (i = 0 ; i < num_peers ; i++)
est_request_rate();
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Client requested %" PRIX32 " random peer(s).\n", num_peers);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Client requested %" PRIu32 " random peer(s).\n",
+ num_peers);
+
+ reply_cls = GNUNET_new (struct ReplyCls);
+ reply_cls->id = ntohl (msg->id);
+ reply_cls->client = client;
- RPS_sampler_get_n_rand_peers (client_sampler, client_respond,
- client, num_peers, GNUNET_YES);
+ RPS_sampler_get_n_rand_peers (client_sampler,
+ client_respond,
+ reply_cls,
+ num_peers);
GNUNET_SERVER_receive_done (client,
GNUNET_OK);
*/
static void
handle_client_seed (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+ struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
{
struct GNUNET_RPS_CS_SeedMessage *in_msg;
struct GNUNET_PeerIdentity *peers;
+ uint32_t num_peers;
uint32_t i;
- if (sizeof (struct GNUNET_RPS_CS_SeedMessage) < ntohs (message->size))
+ if (sizeof (struct GNUNET_RPS_CS_SeedMessage) > ntohs (message->size))
{
GNUNET_break_op (0);
GNUNET_SERVER_receive_done (client,
- GNUNET_SYSERR);
+ GNUNET_SYSERR);
}
+
in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
+ num_peers = ntohl (in_msg->num_peers);
+ peers = (struct GNUNET_PeerIdentity *) &in_msg[1];
+ //peers = GNUNET_new_array (num_peers, struct GNUNET_PeerIdentity);
+ //memcpy (peers, &in_msg[1], num_peers * sizeof (struct GNUNET_PeerIdentity));
+
if ((ntohs (message->size) - sizeof (struct GNUNET_RPS_CS_SeedMessage)) /
- sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
+ sizeof (struct GNUNET_PeerIdentity) != num_peers)
{
GNUNET_break_op (0);
GNUNET_SERVER_receive_done (client,
- GNUNET_SYSERR);
+ GNUNET_SYSERR);
}
- in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
- peers = (struct GNUNET_PeerIdentity *) &message[1];
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Client seeded peers:\n");
+ print_peer_list (peers, num_peers);
+
+ for (i = 0 ; i < num_peers ; i++)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Updating samplers with seed %" PRIu32 ": %s\n",
+ i,
+ GNUNET_i2s (&peers[i]));
+
+ new_peer_id (&peers[i]);
+
+ //RPS_sampler_update (prot_sampler, &peers[i]);
+ //RPS_sampler_update (client_sampler, &peers[i]);
+ }
- for ( i = 0 ; i < ntohl (in_msg->num_peers) ; i++ )
- RPS_sampler_update (prot_sampler, &peers[i]);
- RPS_sampler_update (client_sampler, &peers[i]);
+ ////GNUNET_free (peers);
GNUNET_SERVER_receive_done (client,
- GNUNET_OK);
+ GNUNET_OK);
}
// (check the proof of work)
- peer = (const struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
+ peer = (const struct GNUNET_PeerIdentity *)
+ GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
// FIXME wait for cadet to change this function
+
LOG (GNUNET_ERROR_TYPE_DEBUG, "PUSH received (%s)\n", GNUNET_i2s (peer));
+ #ifdef ENABLE_MALICIOUS
+ struct AttackedPeer *tmp_att_peer;
+
+ tmp_att_peer = GNUNET_new (struct AttackedPeer);
+ memcpy (&tmp_att_peer->peer_id, peer, sizeof (struct GNUNET_PeerIdentity));
+ if (1 == mal_type
+ || 3 == mal_type)
+ { /* Try to maximise representation */
+ if (NULL == att_peer_set)
+ att_peer_set = GNUNET_CONTAINER_multipeermap_create (1, GNUNET_NO);
+ if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (att_peer_set,
+ peer))
+ {
+ GNUNET_CONTAINER_DLL_insert (att_peers_head,
+ att_peers_tail,
+ tmp_att_peer);
+ add_peer_array_to_set (peer, 1, att_peer_set);
+ }
+ return GNUNET_OK;
+ }
+
+
+ else if (2 == mal_type)
+ { /* We attack one single well-known peer - simply ignore */
+ return GNUNET_OK;
+ }
+ else
+ {
+ GNUNET_free (tmp_att_peer);
+ }
+
+ #endif /* ENABLE_MALICIOUS */
+
/* Add the sending peer to the push_list */
- if (GNUNET_NO == in_arr (push_list, pull_list_size, peer))
+ if (GNUNET_NO == in_arr (push_list, push_list_size, peer))
GNUNET_array_append (push_list, push_list_size, *peer);
return GNUNET_OK;
}
+
/**
- * Handle PULL REQUEST request message from another peer.
+ * Iterator over hash map entries.
+ * Called from #generate_view_array and writes every peer id into #view_array.
*
- * Reply with the gossip list of PeerIDs.
- *
- * @param cls Closure
- * @param channel The channel the PUSH was received over
- * @param channel_ctx The context associated with this channel
- * @param msg The message header
+ * @param cls closure - the pointer to the counter
+ * @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
-handle_peer_pull_request (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **channel_ctx,
- const struct GNUNET_MessageHeader *msg)
+dump_id_to_view_array (void *cls,
+ const struct GNUNET_PeerIdentity *key,
+ void *value)
{
- struct GNUNET_PeerIdentity *peer;
- uint32_t send_size;
- struct GNUNET_MQ_Handle *mq;
- struct GNUNET_MQ_Envelope *ev;
- struct GNUNET_RPS_P2P_PullReplyMessage *out_msg;
+ unsigned int *i = (unsigned int *) cls;
+ view_array[(*i)++] = *key;
+ return GNUNET_YES;
+}
- peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel,
- GNUNET_CADET_OPTION_PEER);
- // FIXME wait for cadet to change this function
- /* Compute actual size */
- send_size = sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) +
- gossip_list_size * sizeof (struct GNUNET_PeerIdentity);
+/**
+ * Makes sure the view_array is filled with the peer ids currently in #view.
+ * Called from within #do_round before sending pushes and pulls and from
+ * #handle_peer_pull_request when a reply is sent.
+ */
+static void
+generate_view_array (unsigned int view_size)
+{
+ unsigned int *i;
+ int ret;
- if (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < send_size)
- /* Compute number of peers to send
- * If too long, simply truncate */
- send_size =
- (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE -
- sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
- sizeof (struct GNUNET_PeerIdentity);
- else
- send_size = gossip_list_size;
+ if (NULL == view_array)
+ {
+ view_array = GNUNET_new_array (view_size,
+ struct GNUNET_PeerIdentity);
+ i = GNUNET_new (unsigned int);
+ *i = 0;
+
+ ret = GNUNET_CONTAINER_multipeermap_iterate (view,
+ dump_id_to_view_array,
+ i);
+ GNUNET_assert (view_size == ret);
+ GNUNET_assert (view_size == *i);
+
+ GNUNET_free (i);
+ }
+}
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "PULL REQUEST from peer %s received, going to send %u peers\n",
- GNUNET_i2s (peer), send_size);
- mq = get_mq (peer_map, peer);
+/**
+ * Handle PULL REQUEST request message from another peer.
+ *
+ * Reply with the view of PeerIDs.
+ *
+ * @param cls Closure
+ * @param channel The channel the PULL REQUEST was received over
+ * @param channel_ctx The context associated with this channel
+ * @param msg The message header
+ */
+static int
+handle_peer_pull_request (void *cls,
+ struct GNUNET_CADET_Channel *channel,
+ void **channel_ctx,
+ const struct GNUNET_MessageHeader *msg)
+{
+ struct GNUNET_PeerIdentity *peer;
+ unsigned int view_size;
+
+ peer = (struct GNUNET_PeerIdentity *)
+ GNUNET_CADET_channel_get_info (channel,
+ GNUNET_CADET_OPTION_PEER);
+ // FIXME wait for cadet to change this function
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REQUEST received (%s)\n", GNUNET_i2s (peer));
- ev = GNUNET_MQ_msg_extra (out_msg,
- send_size * sizeof (struct GNUNET_PeerIdentity),
- GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY);
- //out_msg->num_peers = htonl (gossip_list_size);
- out_msg->num_peers = htonl (send_size);
- memcpy (&out_msg[1], gossip_list,
- send_size * sizeof (struct GNUNET_PeerIdentity));
+ #ifdef ENABLE_MALICIOUS
+ if (1 == mal_type
+ || 3 == mal_type)
+ { /* Try to maximise representation */
+ send_pull_reply (peer, mal_peers, num_mal_peers);
+ return GNUNET_OK;
+ }
- GNUNET_MQ_send (mq, ev);
+ else if (2 == mal_type)
+ { /* Try to partition network */
+ if (0 == GNUNET_CRYPTO_cmp_peer_identity (&attacked_peer, peer))
+ {
+ send_pull_reply (peer, mal_peers, num_mal_peers);
+ }
+ return GNUNET_OK;
+ }
+ #endif /* ENABLE_MALICIOUS */
+
+ view_size = GNUNET_CONTAINER_multipeermap_size (view);
+ generate_view_array (view_size);
+
+ send_pull_reply (peer, view_array, view_size);
return GNUNET_OK;
}
+
/**
* Handle PULL REPLY message from another peer.
*
*/
static int
handle_peer_pull_reply (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **channel_ctx,
- const struct GNUNET_MessageHeader *msg)
+ struct GNUNET_CADET_Channel *channel,
+ void **channel_ctx,
+ const struct GNUNET_MessageHeader *msg)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received\n");
-
struct GNUNET_RPS_P2P_PullReplyMessage *in_msg;
struct GNUNET_PeerIdentity *peers;
struct PeerContext *peer_ctx;
struct PeerContext *sender_ctx;
struct PeerOutstandingOp out_op;
uint32_t i;
+#ifdef ENABLE_MALICIOUS
+ struct AttackedPeer *tmp_att_peer;
+#endif /* ENABLE_MALICIOUS */
+ /* Check for protocol violation */
if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->size))
{
- GNUNET_break_op (0); // At the moment our own implementation seems to break that.
+ GNUNET_break_op (0);
return GNUNET_SYSERR;
}
+
in_msg = (struct GNUNET_RPS_P2P_PullReplyMessage *) msg;
- if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) / sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
+ if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
+ sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
{
- LOG (GNUNET_ERROR_TYPE_ERROR, "message says it sends %" PRIu64 " peers, have space for %i peers\n",
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "message says it sends %" PRIu64 " peers, have space for %i peers\n",
ntohl (in_msg->num_peers),
- (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) / sizeof (struct GNUNET_PeerIdentity));
+ (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
+ sizeof (struct GNUNET_PeerIdentity));
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
// FIXME wait for cadet to change this function
sender_ctx = get_peer_ctx (peer_map, sender);
- if (0 == get_peer_flag (sender_ctx, PULL_REPLY_PENDING))
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received (%s)\n", GNUNET_i2s (sender));
+
+ if (GNUNET_YES != get_peer_flag (sender_ctx, PULL_REPLY_PENDING))
{
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Received a pull reply from a peer we didn't request one from!\n");
GNUNET_break_op (0);
return GNUNET_OK;
}
- peers = (struct GNUNET_PeerIdentity *) &msg[1];
- for ( i = 0 ; i < ntohl (in_msg->num_peers) ; i++ )
+
+ #ifdef ENABLE_MALICIOUS
+ // We shouldn't even receive pull replies as we're not sending
+ if (2 == mal_type)
+ return GNUNET_OK;
+ #endif /* ENABLE_MALICIOUS */
+
+ /* Do actual logic */
+ peers = (struct GNUNET_PeerIdentity *) &in_msg[1];
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "PULL REPLY received, got following %u peers:\n",
+ ntohl (in_msg->num_peers));
+
+ for (i = 0 ; i < ntohl (in_msg->num_peers) ; i++)
{
- peer_ctx = get_peer_ctx (peer_map, &peers[i]);
- if (NULL != peer_ctx->send_channel
- || NULL != peer_ctx->recv_channel)
- {
- if (GNUNET_NO == in_arr (pull_list, pull_list_size, &peers[i]))
- GNUNET_array_append (pull_list, pull_list_size, peers[i]);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "%u. %s\n",
+ i,
+ GNUNET_i2s (&peers[i]));
+
+ #ifdef ENABLE_MALICIOUS
+ if (1 == mal_type
+ || 3 == mal_type)
+ { /* Add attacked peer to local list */
+ // TODO check if we sent a request and this was the first reply
+ if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (att_peer_set,
+ &peers[i])
+ && GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (mal_peer_set,
+ &peers[i])
+ && 0 != GNUNET_CRYPTO_cmp_peer_identity (&peers[i],
+ &own_identity))
+ {
+ tmp_att_peer = GNUNET_new (struct AttackedPeer);
+ tmp_att_peer->peer_id = peers[i];
+ GNUNET_CONTAINER_DLL_insert (att_peers_head,
+ att_peers_tail,
+ tmp_att_peer);
+ add_peer_array_to_set (&peers[i], 1, att_peer_set);
+ }
+ continue;
}
- else if (GNUNET_NO == insert_in_pull_list_scheduled (peer_ctx))
+ #endif /* ENABLE_MALICIOUS */
+ if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity,
+ &peers[i]))
{
- out_op.op = insert_in_pull_list;
- out_op.op_cls = NULL;
- GNUNET_array_append (peer_ctx->outstanding_ops,
- peer_ctx->num_outstanding_ops,
- out_op);
+ peer_ctx = get_peer_ctx (peer_map, &peers[i]);
+ if (GNUNET_YES == get_peer_flag (peer_ctx, VALID))
+ {
+ if (GNUNET_NO == in_arr (pull_list, pull_list_size, &peers[i]))
+ GNUNET_array_append (pull_list, pull_list_size, peers[i]);
+ }
+ else if (GNUNET_NO == insert_in_pull_list_scheduled (peer_ctx))
+ {
+ out_op.op = insert_in_pull_list;
+ out_op.op_cls = NULL;
+ GNUNET_array_append (peer_ctx->outstanding_ops,
+ peer_ctx->num_outstanding_ops,
+ out_op);
+ check_peer_live (peer_ctx);
+ }
}
}
unset_peer_flag (sender_ctx, PULL_REPLY_PENDING);
- rem_from_list (&pending_pull_reply_list, &pending_pull_reply_list_size, sender);
return GNUNET_OK;
}
/**
- * Send out PUSHes and PULLs.
+ * Compute a random delay.
+ * A uniformly distributed value between mean + spread and mean - spread.
*
- * This is executed regylary.
+ * For example for mean 4 min and spread 2 the minimum is (4 min - (1/2 * 4 min))
+ * It would return a random value between 2 and 6 min.
+ *
+ * @param mean the mean
+ * @param spread the inverse amount of deviation from the mean
+ */
+static struct GNUNET_TIME_Relative
+compute_rand_delay (struct GNUNET_TIME_Relative mean, unsigned int spread)
+{
+ struct GNUNET_TIME_Relative half_interval;
+ struct GNUNET_TIME_Relative ret;
+ unsigned int rand_delay;
+ unsigned int max_rand_delay;
+
+ if (0 == spread)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Not accepting spread of 0\n");
+ GNUNET_break (0);
+ }
+
+ /* Compute random time value between spread * mean and spread * mean */
+ half_interval = GNUNET_TIME_relative_divide (mean, spread);
+
+ max_rand_delay = GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us / mean.rel_value_us * (2/spread);
+ /**
+ * Compute random value between (0 and 1) * round_interval
+ * via multiplying round_interval with a 'fraction' (0 to value)/value
+ */
+ rand_delay = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, max_rand_delay);
+ ret = GNUNET_TIME_relative_multiply (mean, rand_delay);
+ ret = GNUNET_TIME_relative_divide (ret, max_rand_delay);
+ ret = GNUNET_TIME_relative_add (ret, half_interval);
+
+ if (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == ret.rel_value_us)
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Returning FOREVER_REL\n");
+
+ return ret;
+}
+
+
+/**
+ * Send single pull request
+ *
+ * @param peer_id the peer to send the pull request to.
*/
static void
-do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+send_pull_request (struct GNUNET_PeerIdentity *peer_id)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round\n");
+ struct GNUNET_MQ_Envelope *ev;
+ struct GNUNET_MQ_Handle *mq;
+ struct PeerContext *peer_ctx;
- uint32_t i;
- unsigned int *permut;
- unsigned int n_peers; /* Number of peers we send pushes/pulls to */
+ peer_ctx = get_peer_ctx (peer_map, peer_id);
+ GNUNET_assert (GNUNET_NO == get_peer_flag (peer_ctx, PULL_REPLY_PENDING));
+ set_peer_flag (peer_ctx, PULL_REPLY_PENDING);
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending PULL request to peer %s of view.\n",
+ GNUNET_i2s (peer_id));
+
+ ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
+ mq = get_mq (peer_map, peer_id);
+ GNUNET_MQ_send (mq, ev);
+}
+
+
+/**
+ * Send single push
+ *
+ * @param peer_id the peer to send the push to.
+ */
+static void
+send_push (struct GNUNET_PeerIdentity *peer_id)
+{
struct GNUNET_MQ_Envelope *ev;
- struct GNUNET_PeerIdentity peer;
- struct GNUNET_PeerIdentity *tmp_peer;
struct GNUNET_MQ_Handle *mq;
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Printing gossip list:\n");
- for (i = 0 ; i < gossip_list_size ; i++)
+ "Sending PUSH to peer %s of view.\n",
+ GNUNET_i2s (peer_id));
+
+ ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
+ mq = get_mq (peer_map, peer_id);
+ GNUNET_MQ_send (mq, ev);
+}
+
+
+static void
+do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+static void
+do_mal_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+
+#ifdef ENABLE_MALICIOUS
+/**
+ * Turn RPS service to act malicious.
+ *
+ * @param cls Closure
+ * @param client The client that sent the message
+ * @param msg The message header
+ */
+ static void
+handle_client_act_malicious (void *cls,
+ struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *msg)
+{
+ struct GNUNET_RPS_CS_ActMaliciousMessage *in_msg;
+ struct GNUNET_PeerIdentity *peers;
+ uint32_t num_mal_peers_sent;
+ uint32_t num_mal_peers_old;
+
+ /* Check for protocol violation */
+ if (sizeof (struct GNUNET_RPS_CS_ActMaliciousMessage) > ntohs (msg->size))
+ {
+ GNUNET_break_op (0);
+ }
+
+ in_msg = (struct GNUNET_RPS_CS_ActMaliciousMessage *) msg;
+ if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_CS_ActMaliciousMessage)) /
+ sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "message says it sends %" PRIu64 " peers, have space for %i peers\n",
+ ntohl (in_msg->num_peers),
+ (ntohs (msg->size) - sizeof (struct GNUNET_RPS_CS_ActMaliciousMessage)) /
+ sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_break_op (0);
+ }
+
+
+ /* Do actual logic */
+ peers = (struct GNUNET_PeerIdentity *) &msg[1];
+ mal_type = ntohl (in_msg->type);
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Now acting malicious type %" PRIu32 "\n",
+ mal_type);
+
+ if (1 == mal_type)
+ { /* Try to maximise representation */
+ /* Add other malicious peers to those we already know */
+
+ num_mal_peers_sent = ntohl (in_msg->num_peers);
+ num_mal_peers_old = num_mal_peers;
+ GNUNET_array_grow (mal_peers,
+ num_mal_peers,
+ num_mal_peers + num_mal_peers_sent);
+ memcpy (&mal_peers[num_mal_peers_old],
+ peers,
+ num_mal_peers_sent * sizeof (struct GNUNET_PeerIdentity));
+
+ /* Add all mal peers to mal_peer_set */
+ add_peer_array_to_set (&mal_peers[num_mal_peers_old],
+ num_mal_peers_sent,
+ mal_peer_set);
+
+ /* Substitute do_round () with do_mal_round () */
+ GNUNET_SCHEDULER_cancel (do_round_task);
+ do_round_task = GNUNET_SCHEDULER_add_now (&do_mal_round, NULL);
+ }
+
+ else if (2 == mal_type
+ || 3 == mal_type)
+ { /* Try to partition the network */
+ /* Add other malicious peers to those we already know */
+ num_mal_peers_sent = ntohl (in_msg->num_peers) - 1;
+ num_mal_peers_old = num_mal_peers;
+ GNUNET_array_grow (mal_peers,
+ num_mal_peers,
+ num_mal_peers + num_mal_peers_sent);
+ memcpy (&mal_peers[num_mal_peers_old],
+ peers,
+ num_mal_peers_sent * sizeof (struct GNUNET_PeerIdentity));
+
+ /* Add all mal peers to mal_peer_set */
+ add_peer_array_to_set (&mal_peers[num_mal_peers_old],
+ num_mal_peers_sent,
+ mal_peer_set);
+
+ /* Store the one attacked peer */
+ memcpy (&attacked_peer,
+ &in_msg->attacked_peer,
+ sizeof (struct GNUNET_PeerIdentity));
+
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "\t%s\n", GNUNET_i2s (&gossip_list[i]));
- // TODO log lists, ...
+ "Attacked peer is %s\n",
+ GNUNET_i2s (&attacked_peer));
- /* Would it make sense to have one shuffeled gossip list and then
- * to send PUSHes to first alpha peers, PULL requests to next beta peers and
- * use the rest to update sampler?
- * in essence get random peers with consumption */
+ /* Substitute do_round () with do_mal_round () */
+ GNUNET_SCHEDULER_cancel (do_round_task);
+ do_round_task = GNUNET_SCHEDULER_add_now (&do_mal_round, NULL);
+ }
+ else if (0 == mal_type)
+ { /* Stop acting malicious */
+ GNUNET_array_grow (mal_peers, num_mal_peers, 0);
- /* Send PUSHes */
- if (0 < gossip_list_size)
+ /* Substitute do_mal_round () with do_round () */
+ GNUNET_SCHEDULER_cancel (do_round_task);
+ do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
+ }
+ else
{
- permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
- (unsigned int) gossip_list_size);
- n_peers = ceil (alpha * gossip_list_size);
+ GNUNET_break (0);
+ }
+
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
+/**
+ * Send out PUSHes and PULLs maliciously.
+ *
+ * This is executed regylary.
+ */
+static void
+do_mal_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ uint32_t num_pushes;
+ uint32_t i;
+ struct GNUNET_TIME_Relative time_next_round;
+ struct AttackedPeer *tmp_att_peer;
+ struct PeerContext *peer_ctx;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round maliciously type %" PRIu32 ".\n",
+ mal_type);
+
+ /* Do malicious actions */
+ if (1 == mal_type)
+ { /* Try to maximise representation */
+
+ /* The maximum of pushes we're going to send this round */
+ num_pushes = GNUNET_MIN (GNUNET_MIN (push_limit,
+ num_attacked_peers),
+ GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE);
+
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Going to send pushes to %u ceil (%f * %u) peers.\n",
- n_peers, alpha, gossip_list_size);
- for (i = 0 ; i < n_peers ; i++)
+ "Going to send %" PRIu32 " pushes\n",
+ num_pushes);
+
+ /* Send PUSHes to attacked peers */
+ for (i = 0 ; i < num_pushes ; i++)
{
- peer = gossip_list[permut[i]];
- if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer)) // TODO
- { // FIXME if this fails schedule/loop this for later
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sending PUSH to peer %s of gossiped list.\n",
- GNUNET_i2s (&peer));
+ if (att_peers_tail == att_peer_index)
+ att_peer_index = att_peers_head;
+ else
+ att_peer_index = att_peer_index->next;
- ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
- mq = get_mq (peer_map, &peer);
- GNUNET_MQ_send (mq, ev);
- }
+ send_push (&att_peer_index->peer_id);
+ }
+
+ /* Send PULLs to some peers to learn about additional peers to attack */
+ tmp_att_peer = att_peer_index;
+ for (i = 0 ; i < num_pushes * alpha ; i++)
+ {
+ if (att_peers_tail == tmp_att_peer)
+ tmp_att_peer = att_peers_head;
+ else
+ att_peer_index = tmp_att_peer->next;
+
+ send_pull_request (&tmp_att_peer->peer_id);
}
- GNUNET_free (permut);
}
- /* Send PULL requests */
- //permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG, (unsigned int) sampler_list->size);
- n_peers = ceil (beta * gossip_list_size);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Going to send pulls to %u ceil (%f * %u) peers.\n",
- n_peers, beta, gossip_list_size);
- for (i = 0 ; i < n_peers ; i++)
- {
- tmp_peer = get_rand_peer_ignore_list (gossip_list, gossip_list_size,
- pending_pull_reply_list, pending_pull_reply_list_size);
- if (NULL != tmp_peer)
+ else if (2 == mal_type)
+ { /**
+ * Try to partition the network
+ * Send as many pushes to the attacked peer as possible
+ * That is one push per round as it will ignore more.
+ */
+ send_push (&attacked_peer);
+ }
+
+
+ if (3 == mal_type)
+ { /* Combined attack */
+
+ /* Send PUSH to attacked peers */
+ peer_ctx = get_peer_ctx (peer_map, &attacked_peer);
+ if (GNUNET_YES == get_peer_flag (peer_ctx, VALID))
{
- peer = *tmp_peer;
- GNUNET_free (tmp_peer);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Goding to send push to attacked peer (%s)\n",
+ GNUNET_i2s (&attacked_peer));
+ send_push (&attacked_peer);
+ }
+ else
+ check_peer_live (peer_ctx);
- GNUNET_array_append (pending_pull_reply_list, pending_pull_reply_list_size, peer);
+ /* The maximum of pushes we're going to send this round */
+ num_pushes = GNUNET_MIN (GNUNET_MIN (push_limit - 1,
+ num_attacked_peers),
+ GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE);
- if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer))
- { // FIXME if this fails schedule/loop this for later
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sending PULL request to peer %s of gossiped list.\n",
- GNUNET_i2s (&peer));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to send %" PRIu32 " pushes\n",
+ num_pushes);
- ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
- mq = get_mq (peer_map, &peer);
- GNUNET_MQ_send (mq, ev);
- }
+ for (i = 0 ; i < num_pushes ; i++)
+ {
+ if (att_peers_tail == att_peer_index)
+ att_peer_index = att_peers_head;
+ else
+ att_peer_index = att_peer_index->next;
+
+ send_push (&att_peer_index->peer_id);
+ }
+
+ /* Send PULLs to some peers to learn about additional peers to attack */
+ tmp_att_peer = att_peer_index;
+ for (i = 0 ; i < num_pushes * alpha ; i++)
+ {
+ if (att_peers_tail == tmp_att_peer)
+ tmp_att_peer = att_peers_head;
+ else
+ att_peer_index = tmp_att_peer->next;
+
+ send_pull_request (&tmp_att_peer->peer_id);
}
}
+ /* Schedule next round */
+ time_next_round = compute_rand_delay (round_interval, 2);
- /* Update gossip list */
- uint32_t r_index;
+ //do_round_task = GNUNET_SCHEDULER_add_delayed (round_interval, &do_mal_round, NULL);
+ do_round_task = GNUNET_SCHEDULER_add_delayed (time_next_round, &do_mal_round, NULL);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
+}
+#endif /* ENABLE_MALICIOUS */
+
+
+/**
+ * Send out PUSHes and PULLs, possibly update #view, samplers.
+ *
+ * This is executed regylary.
+ */
+static void
+do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round.\n");
- if ( push_list_size <= alpha * gossip_list_size &&
- push_list_size != 0 &&
- pull_list_size != 0 )
+ uint32_t i;
+ unsigned int view_size;
+ unsigned int *permut;
+ unsigned int a_peers; /* Number of peers we send pushes to */
+ unsigned int b_peers; /* Number of peers we send pull requests to */
+ uint32_t first_border;
+ uint32_t second_border;
+ struct GNUNET_PeerIdentity peer;
+ struct PeerContext *peer_ctx;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Printing view:\n");
+ to_file (file_name_view_log,
+ "___ new round ___");
+ view_size = GNUNET_CONTAINER_multipeermap_size (view);
+ generate_view_array (view_size);
+ for (i = 0 ; i < view_size ; i++)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Update of the gossip list.\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "\t%s\n", GNUNET_i2s (&view_array[i]));
+ to_file (file_name_view_log,
+ "=%s\t(do round)",
+ GNUNET_i2s_full (&view_array[i]));
+ }
- uint32_t first_border;
- uint32_t second_border;
- first_border = ceil (alpha * sampler_size_est_need);
- second_border = first_border + ceil (beta * sampler_size_est_need);
+ /* Send pushes and pull requests */
+ if (0 < view_size)
+ {
+ permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
+ (unsigned int) view_size);
- GNUNET_array_grow (gossip_list, gossip_list_size, second_border);
+ /* Send PUSHes */
+ a_peers = ceil (alpha * view_size);
- for (i = 0 ; i < first_border ; i++)
- { // TODO use RPS_sampler_get_n_rand_peers
- /* Update gossip list with peers received through PUSHes */
- r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
- push_list_size);
- gossip_list[i] = push_list[r_index];
- // TODO change the peer_flags accordingly
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to send pushes to %u (ceil (%f * %u)) peers.\n",
+ a_peers, alpha, view_size);
+ for (i = 0; i < a_peers; i++)
+ {
+ peer = view_array[permut[i]];
+ if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer)) // TODO
+ { // FIXME if this fails schedule/loop this for later
+ send_push (&peer);
+ }
+ }
+
+ /* Send PULL requests */
+ b_peers = ceil (beta * view_size);
+ first_border = a_peers;
+ second_border = a_peers + b_peers;
+ if (second_border > view_size)
+ {
+ first_border = view_size - b_peers;
+ second_border = view_size;
+ }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to send pulls to %u (ceil (%f * %u)) peers.\n",
+ b_peers, beta, view_size);
+ for (i = first_border; i < second_border; i++)
+ {
+ peer = view_array[permut[i]];
+ peer_ctx = get_peer_ctx (peer_map, &peer);
+ if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer) &&
+ GNUNET_NO == get_peer_flag (peer_ctx, PULL_REPLY_PENDING)) // TODO
+ { // FIXME if this fails schedule/loop this for later
+ send_pull_request (&peer);
+ }
}
- for (i = first_border ; i < second_border ; i++)
+ GNUNET_free (permut);
+ permut = NULL;
+ }
+
+
+ /* Update view */
+ /* TODO see how many peers are in push-/pull- list! */
+
+ if (push_list_size <= alpha * view_size &&
+ 0 < push_list_size &&
+ 0 < pull_list_size)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Update of the view.\n");
+
+ uint32_t final_size;
+ uint32_t peers_to_clean_size;
+ struct GNUNET_PeerIdentity *peers_to_clean;
+
+ peers_to_clean = NULL;
+ peers_to_clean_size = 0;
+ GNUNET_array_grow (peers_to_clean, peers_to_clean_size, view_size);
+ memcpy (peers_to_clean,
+ view_array,
+ view_size * sizeof (struct GNUNET_PeerIdentity));
+
+ /* Seems like recreating is the easiest way of emptying the peermap */
+ GNUNET_CONTAINER_multipeermap_destroy (view);
+ view = GNUNET_CONTAINER_multipeermap_create (view_size, GNUNET_NO);
+ to_file (file_name_view_log,
+ "--- emptied ---");
+
+ first_border = GNUNET_MIN (ceil (alpha * sampler_size_est_need),
+ push_list_size);
+ second_border = first_border +
+ GNUNET_MIN (floor (beta * sampler_size_est_need),
+ pull_list_size);
+ final_size = second_border +
+ ceil ((1 - (alpha + beta)) * sampler_size_est_need);
+
+ GNUNET_array_grow (view_array, view_size, second_border);
+
+ /* Update view with peers received through PUSHes */
+ permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
+ push_list_size);
+ for (i = 0; i < first_border; i++)
{
- /* Update gossip list with peers received through PULLs */
- r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
- pull_list_size);
- gossip_list[i] = pull_list[r_index];
+ view_array[i] = push_list[permut[i]];
+ GNUNET_CONTAINER_multipeermap_put (view, &push_list[permut[i]], NULL,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
+
+ to_file (file_name_view_log,
+ "+%s\t(push list)",
+ GNUNET_i2s_full (&view_array[i]));
// TODO change the peer_flags accordingly
}
+ GNUNET_free (permut);
+ permut = NULL;
- for (i = second_border ; i < sampler_size_est_need ; i++)
+ /* Update view with peers received through PULLs */
+ permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
+ pull_list_size);
+ for (i = first_border; i < second_border; i++)
{
- /* Update gossip list with peers from history */
- RPS_sampler_get_n_rand_peers (prot_sampler, hist_update, NULL, 1, GNUNET_NO);
- num_hist_update_tasks++;
+ view_array[i] = pull_list[permut[i]];
+ GNUNET_CONTAINER_multipeermap_put (view, &pull_list[permut[i]], NULL,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
+
+ to_file (file_name_view_log,
+ "+%s\t(pull list)",
+ GNUNET_i2s_full (&view_array[i]));
// TODO change the peer_flags accordingly
}
+ GNUNET_free (permut);
+ permut = NULL;
+
+ /* Update view with peers from history */
+ RPS_sampler_get_n_rand_peers (prot_sampler,
+ hist_update,
+ NULL,
+ final_size - second_border);
+ num_hist_update_tasks = final_size - second_border;
+ // TODO change the peer_flags accordingly
+ for (i = 0; i < view_size; i++)
+ rem_from_list (&peers_to_clean, &peers_to_clean_size, &view_array[i]);
+
+ /* Clean peers that were removed from the view */
+ for (i = 0; i < peers_to_clean_size; i++)
+ {
+ peer_clean (&peers_to_clean[i]);
+ to_file (file_name_view_log,
+ "-%s",
+ GNUNET_i2s_full (&peers_to_clean[i]));
+ }
+
+ GNUNET_free (peers_to_clean);
+ peers_to_clean = NULL;
}
else
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "No update of the gossip list.\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "No update of the view.\n");
}
// TODO independent of that also get some peers from CADET_get_peers()?
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received %u pushes and %u pulls last round (alpha (%.2f) * view_size (%u) = %.2f)\n",
+ push_list_size,
+ pull_list_size,
+ alpha,
+ view_size,
+ alpha * view_size);
/* Update samplers */
-
- for ( i = 0 ; i < push_list_size ; i++ )
+ for (i = 0; i < push_list_size; i++)
{
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Updating with peer %s from push list\n",
+ GNUNET_i2s (&push_list[i]));
RPS_sampler_update (prot_sampler, &push_list[i]);
RPS_sampler_update (client_sampler, &push_list[i]);
// TODO set in_flag?
}
- for ( i = 0 ; i < pull_list_size ; i++ )
+ for (i = 0; i < pull_list_size; i++)
{
- RPS_sampler_update (prot_sampler, &push_list[i]);
- RPS_sampler_update (client_sampler, &push_list[i]);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Updating with peer %s from pull list\n",
+ GNUNET_i2s (&pull_list[i]));
+ RPS_sampler_update (prot_sampler, &pull_list[i]);
+ RPS_sampler_update (client_sampler, &pull_list[i]);
// TODO set in_flag?
}
GNUNET_array_grow (pull_list, pull_list_size, 0);
struct GNUNET_TIME_Relative time_next_round;
- struct GNUNET_TIME_Relative half_round_interval;
- unsigned int rand_delay;
- /* Compute random time value between .5 * round_interval and 1.5 *round_interval */
- half_round_interval = GNUNET_TIME_relative_divide (round_interval, 2);
- do
- {
- /*
- * Compute random value between (0 and 1) * round_interval
- * via multiplying round_interval with a 'fraction' (0 to value)/value
- */
- rand_delay = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT_MAX/10);
- time_next_round = GNUNET_TIME_relative_multiply (round_interval, rand_delay);
- time_next_round = GNUNET_TIME_relative_divide (time_next_round, UINT_MAX/10);
- time_next_round = GNUNET_TIME_relative_add (time_next_round, half_round_interval);
- } while (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == time_next_round.rel_value_us);
+ time_next_round = compute_rand_delay (round_interval, 2);
/* Schedule next round */
- do_round_task = GNUNET_SCHEDULER_add_delayed (round_interval, &do_round, NULL);
+ do_round_task = GNUNET_SCHEDULER_add_delayed (time_next_round, &do_round, NULL);
LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
}
-/**
- * Open a connection to given peer and store channel and mq.
- */
- void
-insertCB (void *cls, struct RPS_Sampler *sampler,
- const struct GNUNET_PeerIdentity *id)
-{
- // We open a channel to be notified when this peer goes down.
- (void) get_channel (peer_map, id);
-}
-
-
-/**
- * Close the connection to given peer and delete channel and mq
- * if the peer is not anymore in the sampler.
- */
- void
-removeCB (void *cls, struct RPS_Sampler *sampler,
- const struct GNUNET_PeerIdentity *id)
-{
- size_t s;
- struct PeerContext *ctx;
-
- s = RPS_sampler_count_id (sampler, id);
- if ( 1 >= s )
- {
- if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, id)
- && 0 != GNUNET_CRYPTO_cmp_peer_identity (id, &own_identity))
- {
- ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, id);
- if (NULL != ctx->send_channel)
- {
- if (NULL != ctx->mq)
- {
- GNUNET_MQ_destroy (ctx->mq);
- ctx->mq = NULL;
- }
- // may already be freed at shutdown of cadet
- // maybe this fails at our own channel
- GNUNET_CADET_channel_destroy (ctx->send_channel);
- ctx->send_channel = NULL;
- }
- // TODO cleanup peer
- //(void) GNUNET_CONTAINER_multipeermap_remove_all (peer_map, id);
- }
- }
-}
-
static void
rps_start (struct GNUNET_SERVER_Handle *server);
+
/**
* This is called from GNUNET_CADET_get_peers().
*
unsigned int best_path) // "How long is the best path?
// (0 = unknown, 1 = ourselves, 2 = neighbor)"
{
- struct GNUNET_SERVER_Handle *server;
- struct PeerOutstandingOp out_op;
- struct PeerContext *peer_ctx;
-
- server = (struct GNUNET_SERVER_Handle *) cls;
- if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, peer))
+ if (NULL != peer)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Got peer %s (at %p) from CADET (gossip_list_size: %u)\n",
- GNUNET_i2s (peer), peer, gossip_list_size);
-
- // maybe create a function for that
- peer_ctx = get_peer_ctx (peer_map, peer);
- // FIXME this peer might already be marked as LIVE
- if (GNUNET_NO == insert_in_sampler_scheduled (peer_ctx))
- {
- out_op.op = insert_in_sampler;
- out_op.op_cls = NULL;
- GNUNET_array_append (peer_ctx->outstanding_ops,
- peer_ctx->num_outstanding_ops,
- out_op);
- }
-
- if (GNUNET_NO == insert_in_gossip_list_scheduled (peer_ctx))
- {
- out_op.op = insert_in_gossip_list;
- out_op.op_cls = NULL;
- GNUNET_array_append (peer_ctx->outstanding_ops,
- peer_ctx->num_outstanding_ops,
- out_op);
- }
-
- /* Trigger livelyness test on peer */
- (void) get_channel (peer_map, peer);
-
- // send push/pull to each of those peers?
+ "Got peer_id %s from cadet\n",
+ GNUNET_i2s (peer));
+ new_peer_id (peer);
}
- else if (NULL == peer)
- rps_start (server);
}
-///**
-// * Clean the send channel of a peer
-// */
-//void
-//peer_clean (const struct GNUNET_PeerIdentity *peer)
-//{
-// struct PeerContext *peer_ctx;
-// struct GNUNET_CADET_Channel *channel;
-//
-// if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
-// {
-// peer_ctx = get_peer_ctx (peer_map, peer);
-// if (NULL != peer_ctx->send_channel)
-// {
-// channel = peer_ctx->send_channel;
-// peer_ctx->send_channel = NULL;
-// GNUNET_CADET_channel_destroy (channel);
-// }
-// }
-//}
+/**
+ * Iterator over peers from peerinfo.
+ *
+ * @param cls closure
+ * @param peer id of the peer, NULL for last call
+ * @param hello hello message for the peer (can be NULL)
+ * @param error message
+ */
+void
+process_peerinfo_peers (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Message *hello,
+ const char *err_msg)
+{
+ if (NULL != peer)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Got peer_id %s from peerinfo\n",
+ GNUNET_i2s (peer));
+ new_peer_id (peer);
+ }
+}
/**
struct PeerContext *peer_ctx;
const struct GNUNET_CADET_Channel *channel =
(const struct GNUNET_CADET_Channel *) cls;
- struct GNUNET_CADET_Channel *recv;
- struct GNUNET_CADET_Channel *send;
- if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, value))
- {
- peer_ctx = (struct PeerContext *) value;
+ peer_ctx = (struct PeerContext *) value;
+ set_peer_flag (peer_ctx, TO_DESTROY);
- if (0 != peer_ctx->num_outstanding_ops)
- GNUNET_array_grow (peer_ctx->outstanding_ops,
- peer_ctx->num_outstanding_ops,
- 0);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to clean peer %s\n",
+ GNUNET_i2s (&peer_ctx->peer_id));
- if (NULL != peer_ctx->mq)
- GNUNET_MQ_destroy (peer_ctx->mq);
+ /* If operations are still scheduled for this peer cancel those */
+ if (0 != peer_ctx->num_outstanding_ops)
+ {
+ GNUNET_array_grow (peer_ctx->outstanding_ops,
+ peer_ctx->num_outstanding_ops,
+ 0);
+ }
- if (NULL != peer_ctx->is_live_task)
- {
+ /* If we are still waiting for notification whether this peer is live
+ * cancel the according task */
+ if (NULL != peer_ctx->is_live_task)
+ {
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Trying to cancle is_live_task for peer %s\n",
GNUNET_i2s (key));
- GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
- peer_ctx->is_live_task = NULL;
- }
+ GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
+ peer_ctx->is_live_task = NULL;
+ }
+
+ unset_peer_flag (peer_ctx, PULL_REPLY_PENDING);
- send = peer_ctx->send_channel;
+ to_file (file_name_view_log,
+ "-%s\t(cleanup channel, other peer)",
+ GNUNET_i2s_full (key));
+ GNUNET_CONTAINER_multipeermap_remove_all (view, key);
+
+ /* If there is still a mq destroy it */
+ if (NULL != peer_ctx->mq)
+ {
+ GNUNET_MQ_destroy (peer_ctx->mq);
+ peer_ctx->mq = NULL;
+ }
+
+
+ /* Remove the send_channel
+ * This function should be called again from #cleanup_channel (callback
+ * called on the destruction of channels) and clean up the rest. */
+ if (NULL != peer_ctx->send_channel &&
+ channel != peer_ctx->send_channel)
+ {
+ GNUNET_CADET_channel_destroy (peer_ctx->send_channel);
peer_ctx->send_channel = NULL;
- recv = peer_ctx->send_channel;
+ }
+
+ /* Remove the recv_channel
+ * This function should be called again from #cleanup_channel (callback
+ * called on the destruction of channels) and clean up the rest. */
+ if (NULL != peer_ctx->recv_channel &&
+ channel != peer_ctx->recv_channel)
+ {
+ GNUNET_CADET_channel_destroy (peer_ctx->recv_channel);
peer_ctx->recv_channel = NULL;
+ }
- if (NULL != send
- && channel != send)
- {
- GNUNET_CADET_channel_destroy (send);
- }
+ /* If there is no channel we have to remove the context now */
+ if (GNUNET_YES != GNUNET_CONTAINER_multipeermap_remove_all (peer_map, key))
+ LOG (GNUNET_ERROR_TYPE_WARNING, "removing peer from peer_map failed\n");
+
+ GNUNET_free (peer_ctx);
+
+ return GNUNET_YES;
+}
+
+
+/**
+ * Clean the send channel of a peer
+ * If there is also no channel to receive messages from that peer, remove it
+ * from the peermap.
+ */
+void
+peer_clean (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+ /* struct GNUNET_CADET_Channel *channel; */
+
+ if (GNUNET_YES != GNUNET_CONTAINER_multipeermap_contains (view, peer) &&
+ GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
+ {
+ peer_ctx = get_peer_ctx (peer_map, peer);
+ GNUNET_CADET_channel_destroy (peer_ctx->send_channel);
+ peer_ctx->send_channel = NULL;
- if (NULL != recv
- && channel != recv)
+ if (NULL == peer_ctx->recv_channel)
{
- GNUNET_CADET_channel_destroy (recv);
+ peer_remove_cb (NULL, peer, peer_ctx);
}
-
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_remove_all (peer_map, key))
- LOG (GNUNET_ERROR_TYPE_WARNING, "removing peer from peer_map failed\n");
- else
- GNUNET_free (peer_ctx);
}
-
- return GNUNET_YES;
}
*/
static void
shutdown_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
+
LOG (GNUNET_ERROR_TYPE_DEBUG, "RPS is going down\n");
- if ( NULL != do_round_task )
+ GNUNET_PEERINFO_notify_cancel (peerinfo_notify_handle);
+ GNUNET_PEERINFO_disconnect (peerinfo_handle);
+
+ if (NULL != do_round_task)
{
GNUNET_SCHEDULER_cancel (do_round_task);
do_round_task = NULL;
}
-
{
- if (GNUNET_SYSERR == GNUNET_CONTAINER_multipeermap_iterate (peer_map, peer_remove_cb, NULL))
+ if (GNUNET_SYSERR ==
+ GNUNET_CONTAINER_multipeermap_iterate (peer_map, peer_remove_cb, NULL))
LOG (GNUNET_ERROR_TYPE_WARNING,
"Iterating over peers to disconnect from them was cancelled\n");
}
GNUNET_NSE_disconnect (nse);
- GNUNET_CADET_disconnect (cadet_handle);
RPS_sampler_destroy (prot_sampler);
RPS_sampler_destroy (client_sampler);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Size of the peermap: %u\n",
+ GNUNET_CONTAINER_multipeermap_size (peer_map));
GNUNET_break (0 == GNUNET_CONTAINER_multipeermap_size (peer_map));
+ GNUNET_CADET_disconnect (cadet_handle);
GNUNET_CONTAINER_multipeermap_destroy (peer_map);
- GNUNET_array_grow (gossip_list, gossip_list_size, 0);
+ GNUNET_CONTAINER_multipeermap_destroy (view);
+ view = NULL;
GNUNET_array_grow (push_list, push_list_size, 0);
GNUNET_array_grow (pull_list, pull_list_size, 0);
+ #ifdef ENABLE_MALICIOUS
+ struct AttackedPeer *tmp_att_peer;
+ GNUNET_array_grow (mal_peers, num_mal_peers, 0);
+ if (NULL != mal_peer_set)
+ GNUNET_CONTAINER_multipeermap_destroy (mal_peer_set);
+ if (NULL != att_peer_set)
+ GNUNET_CONTAINER_multipeermap_destroy (att_peer_set);
+ while (NULL != att_peers_head)
+ {
+ tmp_att_peer = att_peers_head;
+ GNUNET_CONTAINER_DLL_remove (att_peers_head, att_peers_tail, tmp_att_peer);
+ }
+ #endif /* ENABLE_MALICIOUS */
}
enum GNUNET_CADET_ChannelOption options)
{
struct PeerContext *peer_ctx;
+ struct GNUNET_PeerIdentity peer;
+ peer = *initiator;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"New channel was established to us (Peer %s).\n",
- GNUNET_i2s (initiator));
+ GNUNET_i2s (&peer));
GNUNET_assert (NULL != channel);
// we might not even store the recv_channel
- peer_ctx = get_peer_ctx (peer_map, initiator);
+ peer_ctx = get_peer_ctx (peer_map, &peer);
// FIXME what do we do if a channel is established twice?
// overwrite? Clean old channel? ...?
//if (NULL != peer_ctx->recv_channel)
//}
peer_ctx->recv_channel = channel;
- peer_ctx->mq = NULL;
-
- (void) GNUNET_CONTAINER_multipeermap_put (peer_map, initiator, peer_ctx,
+ (void) GNUNET_CONTAINER_multipeermap_put (peer_map, &peer, peer_ctx,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
+ /* This would make the push-message unnecessary */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Got peer_id %s from peerinfo\n",
+ GNUNET_i2s (&peer));
+ new_peer_id (&peer);
+
peer_is_live (peer_ctx);
return NULL; // TODO
/**
- * This is called when a remote peer destroys a channel.
+ * This is called when a channel is destroyed.
*
* @param cls The closure
* @param channel The channel being closed
(struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
// Guess simply casting isn't the nicest way...
// FIXME wait for cadet to change this function
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up channel to peer %s\n",
- GNUNET_i2s (peer));
if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
- {
+ {/* We don't want to implicitly create a context that we're about to kill */
peer_ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
-
if (NULL == peer_ctx) /* It could have been removed by shutdown_task */
return;
- if (channel == peer_ctx->send_channel)
- { /* Peer probably went down */
- rem_from_list (&gossip_list, &gossip_list_size, peer);
- rem_from_list (&pending_pull_reply_list, &pending_pull_reply_list_size, peer);
+ if (get_peer_flag (peer_ctx, TO_DESTROY))
+ {/* We initiatad the destruction of this particular peer */
+ if (channel == peer_ctx->send_channel)
+ peer_ctx->send_channel = NULL;
+ else if (channel == peer_ctx->recv_channel)
+ peer_ctx->recv_channel = NULL;
- /* Somwewhat {ab,re}use the iterator function */
- /* Cast to void is ok, because it's used as void in peer_remove_cb */
- (void) peer_remove_cb ((void *) channel, peer, peer_ctx);
+ to_file (file_name_view_log,
+ "-%s\t(cleanup channel, ourself)",
+ GNUNET_i2s_full (peer));
}
+
else
- peer_ctx->recv_channel = NULL;
+ { /* We did not initiate the destruction of this peer */
+ if (channel == peer_ctx->send_channel)
+ { /* Something (but us) killd the channel - clean up peer */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "send channel (%s) was destroyed - cleaning up\n",
+ GNUNET_i2s (peer));
+ peer_ctx->send_channel = NULL;
+ /* Somwewhat {ab,re}use the iterator function */
+ /* Cast to void is ok, because it's used as void in peer_remove_cb */
+ (void) peer_remove_cb ((void *) channel, peer, peer_ctx);
+ }
+ else if (channel == peer_ctx->recv_channel)
+ { /* Other peer doesn't want to send us messages anymore */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer %s destroyed recv channel - cleaning up channel\n",
+ GNUNET_i2s (peer));
+ peer_ctx->recv_channel = NULL;
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "unknown channel (%s) was destroyed\n",
+ GNUNET_i2s (peer));
+ }
+ }
+ }
+
+ else
+ { /* We don't know a context to that peer */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "channel (%s) without associated context was destroyed\n",
+ GNUNET_i2s (peer));
}
}
rps_start (struct GNUNET_SERVER_Handle *server)
{
static const struct GNUNET_SERVER_MessageHandler handlers[] = {
- {&handle_client_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
+ {&handle_client_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
sizeof (struct GNUNET_RPS_CS_RequestMessage)},
- {&handle_client_seed, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_SEED, 0},
+ {&handle_client_seed, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_SEED, 0},
+ #ifdef ENABLE_MALICIOUS
+ {&handle_client_act_malicious, NULL, GNUNET_MESSAGE_TYPE_RPS_ACT_MALICIOUS , 0},
+ #endif /* ENABLE_MALICIOUS */
{NULL, NULL, 0, 0}
};
GNUNET_SERVER_add_handlers (server, handlers);
GNUNET_SERVER_disconnect_notify (server,
- &handle_client_disconnect,
- NULL);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Ready to receive requests from clients\n");
+ &handle_client_disconnect,
+ NULL);
+ LOG (GNUNET_ERROR_TYPE_INFO, "Ready to receive requests from clients\n");
- num_hist_update_tasks = 0;
-
do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
LOG (GNUNET_ERROR_TYPE_DEBUG, "Scheduled first round\n");
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
- &shutdown_task,
- NULL);
+ &shutdown_task,
+ NULL);
}
struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *c)
{
+ int size;
+ int out_size;
+
// TODO check what this does -- copied from gnunet-boss
// - seems to work as expected
GNUNET_log_setup ("rps", GNUNET_error_type_to_string (GNUNET_ERROR_TYPE_DEBUG), NULL);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"STARTING SERVICE (rps) for peer [%s]\n",
GNUNET_i2s (&own_identity));
+ #ifdef ENABLE_MALICIOUS
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Malicious execution compiled in.\n");
+ #endif /* ENABLE_MALICIOUS */
+
/* Get time interval from the configuration */
"ROUNDINTERVAL",
&round_interval))
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read ROUNDINTERVAL from config\n");
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ "RPS", "ROUNDINTERVAL");
GNUNET_SCHEDULER_shutdown ();
return;
}
- /* Get initial size of sampler/gossip list from the configuration */
- if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (cfg, "RPS",
- "INITSIZE",
- (long long unsigned int *) &sampler_size_est_need))
+ /* Get initial size of sampler/view from the configuration */
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (cfg, "RPS", "INITSIZE",
+ (long long unsigned int *) &sampler_size_est_need))
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read INITSIZE from config\n");
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ "RPS", "INITSIZE");
GNUNET_SCHEDULER_shutdown ();
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG, "INITSIZE is %" PRIu64 "\n", sampler_size_est_need);
- gossip_list = NULL;
+ view = GNUNET_CONTAINER_multipeermap_create (4, GNUNET_NO);
+
+ /* file_name_view_log */
+ if (GNUNET_OK != GNUNET_DISK_directory_create ("/tmp/rps/"))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Failed to create directory /tmp/rps/\n");
+ }
+
+ size = (14 + strlen (GNUNET_i2s_full (&own_identity)) + 1) * sizeof (char);
+ file_name_view_log = GNUNET_malloc (size);
+ out_size = GNUNET_snprintf (file_name_view_log,
+ size,
+ "/tmp/rps/view-%s",
+ GNUNET_i2s_full (&own_identity));
+ if (size < out_size ||
+ 0 > out_size)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Failed to write string to buffer (size: %i, out_size: %i)\n",
+ size,
+ out_size);
+ }
/* connect to NSE */
nse = GNUNET_NSE_connect (cfg, nse_callback, NULL);
- // TODO check whether that was successful
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to NSE\n");
alpha = 0.45;
&cleanup_channel,
cadet_handlers,
ports);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to CADET\n");
+ peerinfo_handle = GNUNET_PEERINFO_connect (cfg);
/* Initialise sampler */
struct GNUNET_TIME_Relative half_round_interval;
half_round_interval = GNUNET_TIME_relative_multiply (round_interval, .5);
max_round_interval = GNUNET_TIME_relative_add (round_interval, half_round_interval);
- prot_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval,
- //insertCB, NULL, removeCB, NULL);
- NULL, NULL, NULL, NULL);
- client_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval,
- //nsertCB, NULL, removeCB, NULL);
- NULL, NULL, NULL, NULL);
+ prot_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval);
+ client_sampler = RPS_sampler_mod_init (sampler_size_est_need, max_round_interval);
/* Initialise push and pull maps */
push_list = NULL;
push_list_size = 0;
pull_list = NULL;
pull_list_size = 0;
- pending_pull_reply_list = NULL;
- pending_pull_reply_list_size = 0;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Requesting peers from CADET\n");
- GNUNET_CADET_get_peers (cadet_handle, &init_peer_cb, server);
+ num_hist_update_tasks = 0;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Requesting peers from CADET\n");
+ GNUNET_CADET_get_peers (cadet_handle, &init_peer_cb, NULL);
// TODO send push/pull to each of those peers?
+
+ peerinfo_notify_handle = GNUNET_PEERINFO_notify (cfg,
+ GNUNET_NO,
+ process_peerinfo_peers,
+ NULL);
+
+ rps_start (server);
}
projects / oweals / gnunet.git / blobdiff