/*
This file is part of GNUnet.
- Copyright (C)
+ Copyright (C) 2013-2015 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
* @author Julius Bünger
*/
#include "platform.h"
+#include "gnunet_applications.h"
#include "gnunet_util_lib.h"
#include "gnunet_cadet_service.h"
#include "gnunet_peerinfo_service.h"
#include "gnunet_nse_service.h"
+#include "gnunet_statistics_service.h"
#include "rps.h"
#include "rps-test_util.h"
-
#include "gnunet-service-rps_sampler.h"
+#include "gnunet-service-rps_custommap.h"
+#include "gnunet-service-rps_view.h"
#include <math.h>
#include <inttypes.h>
// TODO blacklist? (-> mal peer detection on top of brahms)
-// TODO API request_cancel
-
// hist_size_init, hist_size_max
/**
*/
static const struct GNUNET_CONFIGURATION_Handle *cfg;
+/**
+ * Handle to the statistics service.
+ */
+static struct GNUNET_STATISTICS_Handle *stats;
+
/**
* Our own identity.
*/
static struct GNUNET_PeerIdentity own_identity;
- struct GNUNET_PeerIdentity *
-get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list, unsigned int size,
- const struct GNUNET_PeerIdentity *ignore_list, unsigned int ignore_size);
-
/***********************************************************************
- * Housekeeping with peers
+ * Old gnunet-service-rps_peers.c
***********************************************************************/
/**
- * Closure used to pass the client and the id to the callback
- * that replies to a client's request
+ * Set a peer flag of given peer context.
*/
-struct ReplyCls
-{
- /**
- * DLL
- */
- struct ReplyCls *next;
- struct ReplyCls *prev;
-
- /**
- * The identifier of the request
- */
- uint32_t id;
-
- /**
- * The handle to the request
- */
- struct RPS_SamplerRequestHandle *req_handle;
-
- /**
- * The client handle to send the reply to
- */
- struct GNUNET_SERVER_Client *client;
-};
-
+#define set_peer_flag(peer_ctx, mask) ((peer_ctx->peer_flags) |= (mask))
/**
- * Struct used to store the context of a connected client.
+ * Get peer flag of given peer context.
*/
-struct ClientContext
-{
- /**
- * DLL
- */
- struct ClientContext *next;
- struct ClientContext *prev;
-
- /**
- * The message queue to communicate with the client.
- */
- struct GNUNET_MQ_Handle *mq;
-
- /**
- * DLL with handles to single requests from the client
- */
- struct ReplyCls *rep_cls_head;
- struct ReplyCls *rep_cls_tail;
-};
+#define check_peer_flag_set(peer_ctx, mask)\
+ ((peer_ctx->peer_flags) & (mask) ? GNUNET_YES : GNUNET_NO)
/**
- * DLL with all clients currently connected to us
+ * Unset flag of given peer context.
*/
-struct ClientContext *cli_ctx_head;
-struct ClientContext *cli_ctx_tail;
+#define unset_peer_flag(peer_ctx, mask) ((peer_ctx->peer_flags) &= ~(mask))
/**
- * Used to keep track in what lists single peerIDs are.
+ * Set a channel flag of given channel context.
*/
-enum PeerFlags
-{
- /**
- * If we are waiting for a reply from that peer (sent a pull request).
- */
- PULL_REPLY_PENDING = 0x01,
-
- IN_OTHER_GOSSIP_LIST = 0x02, // unneeded?
- IN_OWN_SAMPLER_LIST = 0x04, // unneeded?
- IN_OWN_GOSSIP_LIST = 0x08, // unneeded?
-
- /**
- * We set this bit when we can be sure the other peer is/was live.
- */
- 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,
-};
+#define set_channel_flag(channel_flags, mask) ((*channel_flags) |= (mask))
+/**
+ * Get channel flag of given channel context.
+ */
+#define check_channel_flag_set(channel_flags, mask)\
+ ((*channel_flags) & (mask) ? GNUNET_YES : GNUNET_NO)
/**
- * Functions of this type can be used to be stored at a peer for later execution.
+ * Unset flag of given channel context.
*/
-typedef void (* PeerOp) (void *cls, const struct GNUNET_PeerIdentity *peer);
+#define unset_channel_flag(channel_flags, mask) ((*channel_flags) &= ~(mask))
+
+
/**
- * Outstanding operation on peer consisting of callback and closure
+ * Pending operation on peer consisting of callback and closure
+ *
+ * When an operation cannot be executed right now this struct is used to store
+ * the callback and closure for later execution.
*/
-struct PeerOutstandingOp
+struct PeerPendingOp
{
/**
* Callback
void *op_cls;
};
-
/**
* List containing all messages that are yet to be send
+ *
+ * This is used to keep track of all messages that have not been sent yet. When
+ * a peer is to be removed the pending messages can be removed properly.
*/
struct PendingMessage
{
const char *type;
};
-
/**
* Struct used to keep track of other peer's status
*
* This is stored in a multipeermap.
+ * It contains information such as cadet channels, a message queue for sending,
+ * status about the channels, the pending operations on this peer and some flags
+ * about the status of the peer itself. (live, valid, ...)
*/
struct PeerContext
{
*/
struct GNUNET_CADET_Channel *send_channel;
+ /**
+ * Flags to the sending channel
+ */
+ uint32_t *send_channel_flags;
+
/**
* Channel open from client.
*/
struct GNUNET_CADET_Channel *recv_channel; // unneeded?
/**
- * Array of outstanding operations on this peer.
+ * Flags to the receiving channel
+ */
+ uint32_t *recv_channel_flags;
+
+ /**
+ * Array of pending operations on this peer.
*/
- struct PeerOutstandingOp *outstanding_ops;
+ struct PeerPendingOp *pending_ops;
/**
* Handle to the callback given to cadet_ntfy_tmt_rdy()
*
* To be canceled on shutdown.
*/
- struct GNUNET_CADET_TransmitHandle *transmit_handle;
+ struct PendingMessage *liveliness_check_pending;
/**
- * Number of outstanding operations.
+ * Number of pending operations.
*/
- unsigned int num_outstanding_ops;
+ unsigned int num_pending_ops;
/**
* Identity of the peer
*/
struct GNUNET_PeerIdentity peer_id;
-
+
/**
* Flags indicating status of peer
*/
uint32_t peer_flags;
+ /**
+ * Last time we received something from that peer.
+ */
+ struct GNUNET_TIME_Absolute last_message_recv;
+
+ /**
+ * Last time we received a keepalive message.
+ */
+ struct GNUNET_TIME_Absolute last_keepalive;
+
/**
* DLL with all messages that are yet to be sent
*/
*/
};
+/**
+ * @brief Closure to #valid_peer_iterator
+ */
+struct PeersIteratorCls
+{
+ /**
+ * Iterator function
+ */
+ PeersIterator iterator;
+
+ /**
+ * Closure to iterator
+ */
+ void *cls;
+};
+
+/**
+ * @brief Hashmap of valid peers.
+ */
+static struct GNUNET_CONTAINER_MultiPeerMap *valid_peers;
+
+/**
+ * @brief Maximum number of valid peers to keep.
+ * TODO read from config
+ */
+static uint32_t num_valid_peers_max = UINT32_MAX;
+
+/**
+ * @brief Filename of the file that stores the valid peers persistently.
+ */
+static char *filename_valid_peers;
+
+/**
+ * Set of all peers to keep track of them.
+ */
+static struct GNUNET_CONTAINER_MultiPeerMap *peer_map;
+
+/**
+ * Cadet handle.
+ */
+static struct GNUNET_CADET_Handle *cadet_handle;
+
+
+
+/**
+ * @brief Get the #PeerContext associated with a peer
+ *
+ * @param peer the peer id
+ *
+ * @return the #PeerContext
+ */
+static struct PeerContext *
+get_peer_ctx (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *ctx;
+ int ret;
+
+ ret = GNUNET_CONTAINER_multipeermap_contains (peer_map, peer);
+ GNUNET_assert (GNUNET_YES == ret);
+ ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
+ GNUNET_assert (NULL != ctx);
+ return ctx;
+}
+
+int
+Peers_check_peer_known (const struct GNUNET_PeerIdentity *peer);
+
+/**
+ * @brief Create a new #PeerContext and insert it into the peer map
+ *
+ * @param peer the peer to create the #PeerContext for
+ *
+ * @return the #PeerContext
+ */
+static struct PeerContext *
+create_peer_ctx (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *ctx;
+ int ret;
+
+ GNUNET_assert (GNUNET_NO == Peers_check_peer_known (peer));
+
+ ctx = GNUNET_new (struct PeerContext);
+ ctx->peer_id = *peer;
+ ctx->send_channel_flags = GNUNET_new (uint32_t);
+ ctx->recv_channel_flags = GNUNET_new (uint32_t);
+ ret = GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
+ GNUNET_assert (GNUNET_OK == ret);
+ return ctx;
+}
+
+
+/**
+ * @brief Create or get a #PeerContext
+ *
+ * @param peer the peer to get the associated context to
+ *
+ * @return the context
+ */
+static struct PeerContext *
+create_or_get_peer_ctx (const struct GNUNET_PeerIdentity *peer)
+{
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ {
+ return create_peer_ctx (peer);
+ }
+ return get_peer_ctx (peer);
+}
+
+void
+Peers_unset_peer_flag (const struct GNUNET_PeerIdentity *peer, enum Peers_PeerFlags flags);
+
+void
+Peers_set_peer_flag (const struct GNUNET_PeerIdentity *peer, enum Peers_PeerFlags flags);
+
+/**
+ * @brief Check whether we have a connection to this @a peer
+ *
+ * Also sets the #Peers_ONLINE flag accordingly
+ *
+ * @param peer the peer in question
+ *
+ * @return #GNUNET_YES if we are connected
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_check_connected (const struct GNUNET_PeerIdentity *peer)
+{
+ const struct PeerContext *peer_ctx;
+
+ /* If we don't know about this peer we don't know whether it's online */
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ {
+ return GNUNET_NO;
+ }
+ /* Get the context */
+ peer_ctx = get_peer_ctx (peer);
+ /* If we have no channel to this peer we don't know whether it's online */
+ if ( (NULL == peer_ctx->send_channel) &&
+ (NULL == peer_ctx->recv_channel) )
+ {
+ Peers_unset_peer_flag (peer, Peers_ONLINE);
+ return GNUNET_NO;
+ }
+ /* Otherwise (if we have a channel, we know that it's online */
+ Peers_set_peer_flag (peer, Peers_ONLINE);
+ return GNUNET_YES;
+}
+
+
+/**
+ * @brief The closure to #get_rand_peer_iterator.
+ */
+struct GetRandPeerIteratorCls
+{
+ /**
+ * @brief The index of the peer to return.
+ * Will be decreased until 0.
+ * Then current peer is returned.
+ */
+ uint32_t index;
+
+ /**
+ * @brief Pointer to peer to return.
+ */
+ const struct GNUNET_PeerIdentity *peer;
+};
+
+
+/**
+ * @brief Iterator function for #get_random_peer_from_peermap.
+ *
+ * Implements #GNUNET_CONTAINER_PeerMapIterator.
+ * Decreases the index until the index is null.
+ * Then returns the current peer.
+ *
+ * @param cls the #GetRandPeerIteratorCls containing index and peer
+ * @param peer current peer
+ * @param value unused
+ *
+ * @return #GNUNET_YES if we should continue to
+ * iterate,
+ * #GNUNET_NO if not.
+ */
+static int
+get_rand_peer_iterator (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ void *value)
+{
+ struct GetRandPeerIteratorCls *iterator_cls = cls;
+ if (0 >= iterator_cls->index)
+ {
+ iterator_cls->peer = peer;
+ return GNUNET_NO;
+ }
+ iterator_cls->index--;
+ return GNUNET_YES;
+}
+
+
+/**
+ * @brief Get a random peer from @a peer_map
+ *
+ * @param peer_map the peer_map to get the peer from
+ *
+ * @return a random peer
+ */
+static const struct GNUNET_PeerIdentity *
+get_random_peer_from_peermap (const struct
+ GNUNET_CONTAINER_MultiPeerMap *peer_map)
+{
+ struct GetRandPeerIteratorCls *iterator_cls;
+ const struct GNUNET_PeerIdentity *ret;
+
+ iterator_cls = GNUNET_new (struct GetRandPeerIteratorCls);
+ iterator_cls->index = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ GNUNET_CONTAINER_multipeermap_size (peer_map));
+ (void) GNUNET_CONTAINER_multipeermap_iterate (valid_peers,
+ get_rand_peer_iterator,
+ iterator_cls);
+ ret = iterator_cls->peer;
+ GNUNET_free (iterator_cls);
+ return ret;
+}
+
+
+/**
+ * @brief Add a given @a peer to valid peers.
+ *
+ * If valid peers are already #num_valid_peers_max, delete a peer previously.
+ *
+ * @param peer the peer that is added to the valid peers.
+ *
+ * @return #GNUNET_YES if no other peer had to be removed
+ * #GNUNET_NO otherwise
+ */
+static int
+add_valid_peer (const struct GNUNET_PeerIdentity *peer)
+{
+ const struct GNUNET_PeerIdentity *rand_peer;
+ int ret;
+
+ ret = GNUNET_YES;
+ while (GNUNET_CONTAINER_multipeermap_size (valid_peers) >= num_valid_peers_max)
+ {
+ rand_peer = get_random_peer_from_peermap (valid_peers);
+ GNUNET_CONTAINER_multipeermap_remove_all (valid_peers, rand_peer);
+ ret = GNUNET_NO;
+ }
+ (void) GNUNET_CONTAINER_multipeermap_put (valid_peers, peer, NULL,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
+ return ret;
+}
+
+
+/**
+ * @brief Set the peer flag to living and
+ * call the pending operations on this peer.
+ *
+ * Also adds peer to #valid_peers.
+ *
+ * @param peer_ctx the #PeerContext of the peer to set live
+ */
+static void
+set_peer_live (struct PeerContext *peer_ctx)
+{
+ struct GNUNET_PeerIdentity *peer;
+ unsigned int i;
+
+ peer = &peer_ctx->peer_id;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer %s is live and valid, calling %i pending operations on it\n",
+ GNUNET_i2s (peer),
+ peer_ctx->num_pending_ops);
+
+ if (NULL != peer_ctx->liveliness_check_pending)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Removing pending liveliness check for peer %s\n",
+ GNUNET_i2s (&peer_ctx->peer_id));
+ // TODO wait until cadet sets mq->cancel_impl
+ //GNUNET_MQ_send_cancel (peer_ctx->liveliness_check_pending->ev);
+ GNUNET_free (peer_ctx->liveliness_check_pending);
+ peer_ctx->liveliness_check_pending = NULL;
+ }
+
+ (void) add_valid_peer (peer);
+ set_peer_flag (peer_ctx, Peers_ONLINE);
+
+ /* Call pending operations */
+ for (i = 0; i < peer_ctx->num_pending_ops; i++)
+ {
+ peer_ctx->pending_ops[i].op (peer_ctx->pending_ops[i].op_cls, peer);
+ }
+ GNUNET_array_grow (peer_ctx->pending_ops, peer_ctx->num_pending_ops, 0);
+}
+
+static void
+cleanup_destroyed_channel (void *cls,
+ const struct GNUNET_CADET_Channel *channel);
+
+/* Declaration of handlers */
+static void
+handle_peer_check (void *cls,
+ const struct GNUNET_MessageHeader *msg);
+
+static void
+handle_peer_push (void *cls,
+ const struct GNUNET_MessageHeader *msg);
+
+static void
+handle_peer_pull_request (void *cls,
+ const struct GNUNET_MessageHeader *msg);
+
+static int
+check_peer_pull_reply (void *cls,
+ const struct GNUNET_RPS_P2P_PullReplyMessage *msg);
+
+static void
+handle_peer_pull_reply (void *cls,
+ const struct GNUNET_RPS_P2P_PullReplyMessage *msg);
+
+/* End declaration of handlers */
+
+
+/**
+ * @brief Get the channel of a peer. If not existing, create.
+ *
+ * @param peer the peer id
+ * @return the #GNUNET_CADET_Channel used to send data to @a peer
+ */
+struct GNUNET_CADET_Channel *
+get_channel (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+ struct GNUNET_HashCode port;
+ struct GNUNET_PeerIdentity *ctx_peer;
+ /* There exists a copy-paste-clone in run() */
+ struct GNUNET_MQ_MessageHandler cadet_handlers[] = {
+ GNUNET_MQ_hd_fixed_size (peer_check,
+ GNUNET_MESSAGE_TYPE_RPS_PP_CHECK_LIVE,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (peer_push,
+ GNUNET_MESSAGE_TYPE_RPS_PP_PUSH,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (peer_pull_request,
+ GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_var_size (peer_pull_reply,
+ GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY,
+ struct GNUNET_RPS_P2P_PullReplyMessage,
+ NULL),
+ GNUNET_MQ_handler_end ()
+ };
+
+
+ peer_ctx = get_peer_ctx (peer);
+ if (NULL == peer_ctx->send_channel)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to establish channel to peer %s\n",
+ GNUNET_i2s (peer));
+ GNUNET_CRYPTO_hash (GNUNET_APPLICATION_PORT_RPS,
+ strlen (GNUNET_APPLICATION_PORT_RPS),
+ &port);
+ ctx_peer = GNUNET_new (struct GNUNET_PeerIdentity);
+ *ctx_peer = *peer;
+ peer_ctx->send_channel =
+ GNUNET_CADET_channel_create (cadet_handle,
+ (struct GNUNET_PeerIdentity *) ctx_peer, /* context */
+ peer,
+ &port,
+ GNUNET_CADET_OPTION_RELIABLE,
+ NULL, /* WindowSize handler */
+ cleanup_destroyed_channel, /* Disconnect handler */
+ cadet_handlers);
+ }
+ GNUNET_assert (NULL != peer_ctx->send_channel);
+ return peer_ctx->send_channel;
+}
+
+
+/**
+ * Get the message queue (#GNUNET_MQ_Handle) of a specific peer.
+ *
+ * If we already have a message queue open to this client,
+ * simply return it, otherways create one.
+ *
+ * @param peer the peer to get the mq to
+ * @return the #GNUNET_MQ_Handle
+ */
+static struct GNUNET_MQ_Handle *
+get_mq (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+
+ peer_ctx = get_peer_ctx (peer);
+
+ if (NULL == peer_ctx->mq)
+ {
+ peer_ctx->mq = GNUNET_CADET_get_mq (get_channel (peer));
+ }
+ return peer_ctx->mq;
+}
+
+
+/**
+ * @brief This is called in response to the first message we sent as a
+ * liveliness check.
+ *
+ * @param cls #PeerContext of peer with pending liveliness check
+ */
+static void
+mq_liveliness_check_successful (void *cls)
+{
+ struct PeerContext *peer_ctx = cls;
+
+ if (NULL != peer_ctx->liveliness_check_pending)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Liveliness check for peer %s was successfull\n",
+ GNUNET_i2s (&peer_ctx->peer_id));
+ GNUNET_free (peer_ctx->liveliness_check_pending);
+ peer_ctx->liveliness_check_pending = NULL;
+ set_peer_live (peer_ctx);
+ }
+}
+
+/**
+ * Issue a check whether peer is live
+ *
+ * @param peer_ctx the context of the peer
+ */
+static 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));
+
+ struct GNUNET_MQ_Handle *mq;
+ struct GNUNET_MQ_Envelope *ev;
+
+ ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_CHECK_LIVE);
+ peer_ctx->liveliness_check_pending = GNUNET_new (struct PendingMessage);
+ peer_ctx->liveliness_check_pending->ev = ev;
+ peer_ctx->liveliness_check_pending->peer_ctx = peer_ctx;
+ peer_ctx->liveliness_check_pending->type = "Check liveliness";
+ mq = get_mq (&peer_ctx->peer_id);
+ GNUNET_MQ_notify_sent (ev,
+ mq_liveliness_check_successful,
+ peer_ctx);
+ GNUNET_MQ_send (mq, ev);
+}
+
+/**
+ * @brief Add an envelope to a message passed to mq to list of pending messages
+ *
+ * @param peer peer the message was sent to
+ * @param ev envelope to the message
+ * @param type type of the message to be sent
+ * @return pointer to pending message
+ */
+static struct PendingMessage *
+insert_pending_message (const struct GNUNET_PeerIdentity *peer,
+ struct GNUNET_MQ_Envelope *ev,
+ const char *type)
+{
+ struct PendingMessage *pending_msg;
+ struct PeerContext *peer_ctx;
+
+ peer_ctx = get_peer_ctx (peer);
+ pending_msg = GNUNET_new (struct PendingMessage);
+ pending_msg->ev = ev;
+ pending_msg->peer_ctx = peer_ctx;
+ pending_msg->type = type;
+ GNUNET_CONTAINER_DLL_insert (peer_ctx->pending_messages_head,
+ peer_ctx->pending_messages_tail,
+ pending_msg);
+ return pending_msg;
+}
+
+
+/**
+ * @brief Remove a pending message from the respective DLL
+ *
+ * @param pending_msg the pending message to remove
+ * @param cancel cancel the pending message, too
+ */
+static void
+remove_pending_message (struct PendingMessage *pending_msg, int cancel)
+{
+ struct PeerContext *peer_ctx;
+
+ peer_ctx = pending_msg->peer_ctx;
+ GNUNET_assert (NULL != peer_ctx);
+ GNUNET_CONTAINER_DLL_remove (peer_ctx->pending_messages_head,
+ peer_ctx->pending_messages_tail,
+ pending_msg);
+ // TODO wait for the cadet implementation of message cancellation
+ //if (GNUNET_YES == cancel)
+ //{
+ // GNUNET_MQ_send_cancel (pending_msg->ev);
+ //}
+ GNUNET_free (pending_msg);
+}
+
+
+/**
+ * @brief Check whether function of type #PeerOp was already scheduled
+ *
+ * The array with pending operations will probably never grow really big, so
+ * iterating over it should be ok.
+ *
+ * @param peer the peer to check
+ * @param peer_op the operation (#PeerOp) on the peer
+ *
+ * @return #GNUNET_YES if this operation is scheduled on that peer
+ * #GNUNET_NO otherwise
+ */
+static int
+check_operation_scheduled (const struct GNUNET_PeerIdentity *peer,
+ const PeerOp peer_op)
+{
+ const struct PeerContext *peer_ctx;
+ unsigned int i;
+
+ peer_ctx = get_peer_ctx (peer);
+ for (i = 0; i < peer_ctx->num_pending_ops; i++)
+ if (peer_op == peer_ctx->pending_ops[i].op)
+ return GNUNET_YES;
+ return GNUNET_NO;
+}
+
+int
+Peers_remove_peer (const struct GNUNET_PeerIdentity *peer);
+
+/**
+ * Iterator over hash map entries. Deletes all contexts of peers.
+ *
+ * @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
+peermap_clear_iterator (void *cls,
+ const struct GNUNET_PeerIdentity *key,
+ void *value)
+{
+ Peers_remove_peer (key);
+ return GNUNET_YES;
+}
+
+
+/**
+ * @brief This is called once a message is sent.
+ *
+ * Removes the pending message
+ *
+ * @param cls type of the message that was sent
+ */
+static void
+mq_notify_sent_cb (void *cls)
+{
+ struct PendingMessage *pending_msg = (struct PendingMessage *) cls;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "%s was sent.\n",
+ pending_msg->type);
+ if (0 == strncmp ("PULL REPLY", pending_msg->type, 10))
+ GNUNET_STATISTICS_update(stats, "# pull replys sent", 1, GNUNET_NO);
+ if (0 == strncmp ("PULL REQUEST", pending_msg->type, 12))
+ GNUNET_STATISTICS_update(stats, "# pull requests sent", 1, GNUNET_NO);
+ if (0 == strncmp ("PUSH", pending_msg->type, 4))
+ GNUNET_STATISTICS_update(stats, "# pushes sent", 1, GNUNET_NO);
+ /* Do not cancle message */
+ remove_pending_message (pending_msg, GNUNET_NO);
+}
+
+
+/**
+ * @brief Iterator function for #store_valid_peers.
+ *
+ * Implements #GNUNET_CONTAINER_PeerMapIterator.
+ * Writes single peer to disk.
+ *
+ * @param cls the file handle to write to.
+ * @param peer current peer
+ * @param value unused
+ *
+ * @return #GNUNET_YES if we should continue to
+ * iterate,
+ * #GNUNET_NO if not.
+ */
+static int
+store_peer_presistently_iterator (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ void *value)
+{
+ const struct GNUNET_DISK_FileHandle *fh = cls;
+ char peer_string[128];
+ int size;
+ ssize_t ret;
+
+ if (NULL == peer)
+ {
+ return GNUNET_YES;
+ }
+ size = GNUNET_snprintf (peer_string,
+ sizeof (peer_string),
+ "%s\n",
+ GNUNET_i2s_full (peer));
+ GNUNET_assert (53 == size);
+ ret = GNUNET_DISK_file_write (fh,
+ peer_string,
+ size);
+ GNUNET_assert (size == ret);
+ return GNUNET_YES;
+}
+
+
+/**
+ * @brief Store the peers currently in #valid_peers to disk.
+ */
+static void
+store_valid_peers ()
+{
+ struct GNUNET_DISK_FileHandle *fh;
+ uint32_t number_written_peers;
+ int ret;
+
+ if (0 == strncmp ("DISABLE", filename_valid_peers, 7))
+ {
+ return;
+ }
+
+ ret = GNUNET_DISK_directory_create_for_file (filename_valid_peers);
+ if (GNUNET_SYSERR == ret)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Not able to create directory for file `%s'\n",
+ filename_valid_peers);
+ GNUNET_break (0);
+ }
+ else if (GNUNET_NO == ret)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Directory for file `%s' exists but is not writable for us\n",
+ filename_valid_peers);
+ GNUNET_break (0);
+ }
+ fh = GNUNET_DISK_file_open (filename_valid_peers,
+ GNUNET_DISK_OPEN_WRITE |
+ GNUNET_DISK_OPEN_CREATE,
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE);
+ if (NULL == fh)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Not able to write valid peers to file `%s'\n",
+ filename_valid_peers);
+ return;
+ }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Writing %u valid peers to disk\n",
+ GNUNET_CONTAINER_multipeermap_size (valid_peers));
+ number_written_peers =
+ GNUNET_CONTAINER_multipeermap_iterate (valid_peers,
+ store_peer_presistently_iterator,
+ fh);
+ GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_close (fh));
+ GNUNET_assert (number_written_peers ==
+ GNUNET_CONTAINER_multipeermap_size (valid_peers));
+}
+
+
+/**
+ * @brief Convert string representation of peer id to peer id.
+ *
+ * Counterpart to #GNUNET_i2s_full.
+ *
+ * @param string_repr The string representation of the peer id
+ *
+ * @return The peer id
+ */
+static const struct GNUNET_PeerIdentity *
+s2i_full (const char *string_repr)
+{
+ struct GNUNET_PeerIdentity *peer;
+ size_t len;
+ int ret;
+
+ peer = GNUNET_new (struct GNUNET_PeerIdentity);
+ len = strlen (string_repr);
+ if (52 > len)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Not able to convert string representation of PeerID to PeerID\n"
+ "Sting representation: %s (len %lu) - too short\n",
+ string_repr,
+ len);
+ GNUNET_break (0);
+ }
+ else if (52 < len)
+ {
+ len = 52;
+ }
+ ret = GNUNET_CRYPTO_eddsa_public_key_from_string (string_repr,
+ len,
+ &peer->public_key);
+ if (GNUNET_OK != ret)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Not able to convert string representation of PeerID to PeerID\n"
+ "Sting representation: %s\n",
+ string_repr);
+ GNUNET_break (0);
+ }
+ return peer;
+}
+
+
+/**
+ * @brief Restore the peers on disk to #valid_peers.
+ */
+static void
+restore_valid_peers ()
+{
+ off_t file_size;
+ uint32_t num_peers;
+ struct GNUNET_DISK_FileHandle *fh;
+ char *buf;
+ ssize_t size_read;
+ char *iter_buf;
+ char *str_repr;
+ const struct GNUNET_PeerIdentity *peer;
+
+ if (0 == strncmp ("DISABLE", filename_valid_peers, 7))
+ {
+ return;
+ }
+
+ if (GNUNET_OK != GNUNET_DISK_file_test (filename_valid_peers))
+ {
+ return;
+ }
+ fh = GNUNET_DISK_file_open (filename_valid_peers,
+ GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_NONE);
+ GNUNET_assert (NULL != fh);
+ GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_handle_size (fh, &file_size));
+ num_peers = file_size / 53;
+ buf = GNUNET_malloc (file_size);
+ size_read = GNUNET_DISK_file_read (fh, buf, file_size);
+ GNUNET_assert (size_read == file_size);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Restoring %" PRIu32 " peers from file `%s'\n",
+ num_peers,
+ filename_valid_peers);
+ for (iter_buf = buf; iter_buf < buf + file_size - 1; iter_buf += 53)
+ {
+ str_repr = GNUNET_strndup (iter_buf, 53);
+ peer = s2i_full (str_repr);
+ GNUNET_free (str_repr);
+ add_valid_peer (peer);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Restored valid peer %s from disk\n",
+ GNUNET_i2s_full (peer));
+ }
+ iter_buf = NULL;
+ GNUNET_free (buf);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "num_peers: %" PRIu32 ", _size (valid_peers): %u\n",
+ num_peers,
+ GNUNET_CONTAINER_multipeermap_size (valid_peers));
+ if (num_peers != GNUNET_CONTAINER_multipeermap_size (valid_peers))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Number of restored peers does not match file size. Have probably duplicates.\n");
+ }
+ GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_close (fh));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Restored %u valid peers from disk\n",
+ GNUNET_CONTAINER_multipeermap_size (valid_peers));
+}
+
+
+/**
+ * @brief Initialise storage of peers
+ *
+ * @param fn_valid_peers filename of the file used to store valid peer ids
+ * @param cadet_h cadet handle
+ * @param own_id own peer identity
+ */
+void
+Peers_initialise (char* fn_valid_peers,
+ struct GNUNET_CADET_Handle *cadet_h,
+ const struct GNUNET_PeerIdentity *own_id)
+{
+ filename_valid_peers = GNUNET_strdup (fn_valid_peers);
+ cadet_handle = cadet_h;
+ own_identity = *own_id;
+ peer_map = GNUNET_CONTAINER_multipeermap_create (4, GNUNET_NO);
+ valid_peers = GNUNET_CONTAINER_multipeermap_create (4, GNUNET_NO);
+ restore_valid_peers ();
+}
+
+
+/**
+ * @brief Delete storage of peers that was created with #Peers_initialise ()
+ */
+void
+Peers_terminate ()
+{
+ if (GNUNET_SYSERR ==
+ GNUNET_CONTAINER_multipeermap_iterate (peer_map,
+ peermap_clear_iterator,
+ NULL))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Iteration destroying peers was aborted.\n");
+ }
+ GNUNET_CONTAINER_multipeermap_destroy (peer_map);
+ peer_map = NULL;
+ store_valid_peers ();
+ GNUNET_free (filename_valid_peers);
+ GNUNET_CONTAINER_multipeermap_destroy (valid_peers);
+}
+
+
+/**
+ * Iterator over #valid_peers hash map entries.
+ *
+ * @param cls closure - unused
+ * @param peer current peer id
+ * @param value value in the hash map - unused
+ * @return #GNUNET_YES if we should continue to
+ * iterate,
+ * #GNUNET_NO if not.
+ */
+static int
+valid_peer_iterator (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ void *value)
+{
+ struct PeersIteratorCls *it_cls = cls;
+
+ return it_cls->iterator (it_cls->cls,
+ peer);
+}
+
+
+/**
+ * @brief Get all currently known, valid peer ids.
+ *
+ * @param it function to call on each peer id
+ * @param it_cls extra argument to @a it
+ * @return the number of key value pairs processed,
+ * #GNUNET_SYSERR if it aborted iteration
+ */
+int
+Peers_get_valid_peers (PeersIterator iterator,
+ void *it_cls)
+{
+ struct PeersIteratorCls *cls;
+ int ret;
+
+ cls = GNUNET_new (struct PeersIteratorCls);
+ cls->iterator = iterator;
+ cls->cls = it_cls;
+ ret = GNUNET_CONTAINER_multipeermap_iterate (valid_peers,
+ valid_peer_iterator,
+ cls);
+ GNUNET_free (cls);
+ return ret;
+}
+
+
+/**
+ * @brief Add peer to known peers.
+ *
+ * This function is called on new peer_ids from 'external' sources
+ * (client seed, cadet get_peers(), ...)
+ *
+ * @param peer the new #GNUNET_PeerIdentity
+ *
+ * @return #GNUNET_YES if peer was inserted
+ * #GNUNET_NO otherwise (if peer was already known or
+ * peer was #own_identity)
+ */
+int
+Peers_insert_peer (const struct GNUNET_PeerIdentity *peer)
+{
+ if ( (GNUNET_YES == Peers_check_peer_known (peer)) ||
+ (0 == GNUNET_CRYPTO_cmp_peer_identity (peer, &own_identity)) )
+ {
+ return GNUNET_NO; /* We already know this peer - nothing to do */
+ }
+ (void) create_peer_ctx (peer);
+ return GNUNET_YES;
+}
+
+int
+Peers_check_peer_flag (const struct GNUNET_PeerIdentity *peer, enum Peers_PeerFlags flags);
+
+/**
+ * @brief Try connecting to a peer to see whether it is online
+ *
+ * If not known yet, insert into known peers
+ *
+ * @param peer the peer whose liveliness is to be checked
+ * @return #GNUNET_YES if peer had to be inserted
+ * #GNUNET_NO otherwise (if peer was already known or
+ * peer was #own_identity)
+ */
+int
+Peers_issue_peer_liveliness_check (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+ int ret;
+
+ if (0 == GNUNET_CRYPTO_cmp_peer_identity (peer, &own_identity))
+ {
+ return GNUNET_NO;
+ }
+ ret = Peers_insert_peer (peer);
+ peer_ctx = get_peer_ctx (peer);
+ if (GNUNET_NO == Peers_check_peer_flag (peer, Peers_ONLINE))
+ {
+ check_peer_live (peer_ctx);
+ }
+ return ret;
+}
+
+
+/**
+ * @brief Check if peer is removable.
+ *
+ * Check if
+ * - a recv channel exists
+ * - there are pending messages
+ * - there is no pending pull reply
+ *
+ * @param peer the peer in question
+ * @return #GNUNET_YES if peer is removable
+ * #GNUNET_NO if peer is NOT removable
+ * #GNUNET_SYSERR if peer is not known
+ */
+int
+Peers_check_removable (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+
+ if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
+ {
+ return GNUNET_SYSERR;
+ }
+
+ peer_ctx = get_peer_ctx (peer);
+ if ( (NULL != peer_ctx->recv_channel) ||
+ (NULL != peer_ctx->pending_messages_head) ||
+ (GNUNET_NO == check_peer_flag_set (peer_ctx, Peers_PULL_REPLY_PENDING)) )
+ {
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+uint32_t *
+Peers_get_channel_flag (const struct GNUNET_PeerIdentity *peer,
+ enum Peers_ChannelRole role);
+
+int
+Peers_check_channel_flag (uint32_t *channel_flags, enum Peers_ChannelFlags flags);
+
+/**
+ * @brief Remove peer
+ *
+ * @param peer the peer to clean
+ * @return #GNUNET_YES if peer was removed
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_remove_peer (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+ uint32_t *channel_flag;
+
+ if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
+ {
+ return GNUNET_NO;
+ }
+
+ peer_ctx = get_peer_ctx (peer);
+ set_peer_flag (peer_ctx, Peers_TO_DESTROY);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to remove peer %s\n",
+ GNUNET_i2s (&peer_ctx->peer_id));
+ Peers_unset_peer_flag (peer, Peers_ONLINE);
+
+ GNUNET_array_grow (peer_ctx->pending_ops, peer_ctx->num_pending_ops, 0);
+ while (NULL != peer_ctx->pending_messages_head)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Removing unsent %s\n",
+ peer_ctx->pending_messages_head->type);
+ /* Cancle pending message, too */
+ remove_pending_message (peer_ctx->pending_messages_head, GNUNET_YES);
+ }
+ /* If we are still waiting for notification whether this peer is live
+ * cancel the according task */
+ if (NULL != peer_ctx->liveliness_check_pending)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Removing pending liveliness check for peer %s\n",
+ GNUNET_i2s (&peer_ctx->peer_id));
+ // TODO wait until cadet sets mq->cancel_impl
+ //GNUNET_MQ_send_cancel (peer_ctx->liveliness_check_pending->ev);
+ GNUNET_free (peer_ctx->liveliness_check_pending);
+ peer_ctx->liveliness_check_pending = NULL;
+ }
+ channel_flag = Peers_get_channel_flag (peer, Peers_CHANNEL_ROLE_SENDING);
+ if (NULL != peer_ctx->send_channel &&
+ GNUNET_YES != Peers_check_channel_flag (channel_flag, Peers_CHANNEL_DESTROING))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Destroying send channel\n");
+ GNUNET_CADET_channel_destroy (peer_ctx->send_channel);
+ peer_ctx->send_channel = NULL;
+ peer_ctx->mq = NULL;
+ }
+ channel_flag = Peers_get_channel_flag (peer, Peers_CHANNEL_ROLE_RECEIVING);
+ if (NULL != peer_ctx->recv_channel &&
+ GNUNET_YES != Peers_check_channel_flag (channel_flag, Peers_CHANNEL_DESTROING))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Destroying recv channel\n");
+ GNUNET_CADET_channel_destroy (peer_ctx->recv_channel);
+ peer_ctx->recv_channel = NULL;
+ }
+
+ GNUNET_free (peer_ctx->send_channel_flags);
+ GNUNET_free (peer_ctx->recv_channel_flags);
+
+ if (GNUNET_YES != GNUNET_CONTAINER_multipeermap_remove_all (peer_map, &peer_ctx->peer_id))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, "removing peer from peer_map failed\n");
+ }
+ GNUNET_free (peer_ctx);
+ return GNUNET_YES;
+}
+
+
+/**
+ * @brief set flags on a given peer.
+ *
+ * @param peer the peer to set flags on
+ * @param flags the flags
+ */
+void
+Peers_set_peer_flag (const struct GNUNET_PeerIdentity *peer, enum Peers_PeerFlags flags)
+{
+ struct PeerContext *peer_ctx;
+
+ peer_ctx = get_peer_ctx (peer);
+ set_peer_flag (peer_ctx, flags);
+}
+
+
+/**
+ * @brief unset flags on a given peer.
+ *
+ * @param peer the peer to unset flags on
+ * @param flags the flags
+ */
+void
+Peers_unset_peer_flag (const struct GNUNET_PeerIdentity *peer, enum Peers_PeerFlags flags)
+{
+ struct PeerContext *peer_ctx;
+
+ peer_ctx = get_peer_ctx (peer);
+ unset_peer_flag (peer_ctx, flags);
+}
+
+
+/**
+ * @brief Check whether flags on a peer are set.
+ *
+ * @param peer the peer to check the flag of
+ * @param flags the flags to check
+ *
+ * @return #GNUNET_SYSERR if peer is not known
+ * #GNUNET_YES if all given flags are set
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_check_peer_flag (const struct GNUNET_PeerIdentity *peer, enum Peers_PeerFlags flags)
+{
+ struct PeerContext *peer_ctx;
+
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ {
+ return GNUNET_SYSERR;
+ }
+ peer_ctx = get_peer_ctx (peer);
+ return check_peer_flag_set (peer_ctx, flags);
+}
+
+
+/**
+ * @brief set flags on a given channel.
+ *
+ * @param channel the channel to set flags on
+ * @param flags the flags
+ */
+void
+Peers_set_channel_flag (uint32_t *channel_flags, enum Peers_ChannelFlags flags)
+{
+ set_channel_flag (channel_flags, flags);
+}
+
+
+/**
+ * @brief unset flags on a given channel.
+ *
+ * @param channel the channel to unset flags on
+ * @param flags the flags
+ */
+void
+Peers_unset_channel_flag (uint32_t *channel_flags, enum Peers_ChannelFlags flags)
+{
+ unset_channel_flag (channel_flags, flags);
+}
+
+
+/**
+ * @brief Check whether flags on a channel are set.
+ *
+ * @param channel the channel to check the flag of
+ * @param flags the flags to check
+ *
+ * @return #GNUNET_YES if all given flags are set
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_check_channel_flag (uint32_t *channel_flags, enum Peers_ChannelFlags flags)
+{
+ return check_channel_flag_set (channel_flags, flags);
+}
+
+/**
+ * @brief Get the flags for the channel in @a role for @a peer.
+ *
+ * @param peer Peer to get the channel flags for.
+ * @param role Role of channel to get flags for
+ *
+ * @return The flags.
+ */
+uint32_t *
+Peers_get_channel_flag (const struct GNUNET_PeerIdentity *peer,
+ enum Peers_ChannelRole role)
+{
+ const struct PeerContext *peer_ctx;
+
+ peer_ctx = get_peer_ctx (peer);
+ if (Peers_CHANNEL_ROLE_SENDING == role)
+ {
+ return peer_ctx->send_channel_flags;
+ }
+ else if (Peers_CHANNEL_ROLE_RECEIVING == role)
+ {
+ return peer_ctx->recv_channel_flags;
+ }
+ else
+ {
+ GNUNET_assert (0);
+ }
+}
+
+/**
+ * @brief Check whether we have information about the given peer.
+ *
+ * FIXME probably deprecated. Make this the new _online.
+ *
+ * @param peer peer in question
+ *
+ * @return #GNUNET_YES if peer is known
+ * #GNUNET_NO if peer is not knwon
+ */
+int
+Peers_check_peer_known (const struct GNUNET_PeerIdentity *peer)
+{
+ if (NULL != peer_map)
+ {
+ return GNUNET_CONTAINER_multipeermap_contains (peer_map, peer);
+ } else
+ {
+ return GNUNET_NO;
+ }
+}
+
+
+/**
+ * @brief Check whether @a peer is actually a peer.
+ *
+ * A valid peer is a peer that we know exists eg. we were connected to once.
+ *
+ * @param peer peer in question
+ *
+ * @return #GNUNET_YES if peer is valid
+ * #GNUNET_NO if peer is not valid
+ */
+int
+Peers_check_peer_valid (const struct GNUNET_PeerIdentity *peer)
+{
+ return GNUNET_CONTAINER_multipeermap_contains (valid_peers, peer);
+}
+
+
+/**
+ * @brief Indicate that we want to send to the other peer
+ *
+ * This establishes a sending channel
+ *
+ * @param peer the peer to establish channel to
+ */
+void
+Peers_indicate_sending_intention (const struct GNUNET_PeerIdentity *peer)
+{
+ GNUNET_assert (GNUNET_YES == Peers_check_peer_known (peer));
+ (void) get_channel (peer);
+}
+
+
+/**
+ * @brief Check whether other peer has the intention to send/opened channel
+ * towars us
+ *
+ * @param peer the peer in question
+ *
+ * @return #GNUNET_YES if peer has the intention to send
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_check_peer_send_intention (const struct GNUNET_PeerIdentity *peer)
+{
+ const struct PeerContext *peer_ctx;
+
+ peer_ctx = get_peer_ctx (peer);
+ if (NULL != peer_ctx->recv_channel)
+ {
+ return GNUNET_YES;
+ }
+ return GNUNET_NO;
+}
+
+
+/**
+ * Handle the channel a peer opens to us.
+ *
+ * @param cls The closure
+ * @param channel The channel the peer wants to establish
+ * @param initiator The peer's peer ID
+ *
+ * @return initial channel context for the channel
+ * (can be NULL -- that's not an error)
+ */
+void *
+Peers_handle_inbound_channel (void *cls,
+ struct GNUNET_CADET_Channel *channel,
+ const struct GNUNET_PeerIdentity *initiator)
+{
+ struct PeerContext *peer_ctx;
+ struct GNUNET_PeerIdentity *ctx_peer;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "New channel was established to us (Peer %s).\n",
+ GNUNET_i2s (initiator));
+ GNUNET_assert (NULL != channel); /* according to cadet API */
+ /* Make sure we 'know' about this peer */
+ peer_ctx = create_or_get_peer_ctx (initiator);
+ set_peer_live (peer_ctx);
+ ctx_peer = GNUNET_new (struct GNUNET_PeerIdentity);
+ *ctx_peer = *initiator;
+ /* We only accept one incoming channel per peer */
+ if (GNUNET_YES == Peers_check_peer_send_intention (initiator))
+ {
+ set_channel_flag (peer_ctx->recv_channel_flags,
+ Peers_CHANNEL_ESTABLISHED_TWICE);
+ //GNUNET_CADET_channel_destroy (channel);
+ GNUNET_CADET_channel_destroy (peer_ctx->recv_channel);
+ peer_ctx->recv_channel = channel;
+ /* return the channel context */
+ return ctx_peer;
+ }
+ peer_ctx->recv_channel = channel;
+ return ctx_peer;
+}
+
+
+/**
+ * @brief Check whether a sending channel towards the given peer exists
+ *
+ * @param peer the peer to check for
+ *
+ * @return #GNUNET_YES if a sending channel towards that peer exists
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_check_sending_channel_exists (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ { /* If no such peer exists, there is no channel */
+ return GNUNET_NO;
+ }
+ peer_ctx = get_peer_ctx (peer);
+ if (NULL == peer_ctx->send_channel)
+ {
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+
+/**
+ * @brief check whether the given channel is the sending channel of the given
+ * peer
+ *
+ * @param peer the peer in question
+ * @param channel the channel to check for
+ * @param role either #Peers_CHANNEL_ROLE_SENDING, or
+ * #Peers_CHANNEL_ROLE_RECEIVING
+ *
+ * @return #GNUNET_YES if the given chennel is the sending channel of the peer
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_check_channel_role (const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_CADET_Channel *channel,
+ enum Peers_ChannelRole role)
+{
+ const struct PeerContext *peer_ctx;
+
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ {
+ return GNUNET_NO;
+ }
+ peer_ctx = get_peer_ctx (peer);
+ if ( (Peers_CHANNEL_ROLE_SENDING == role) &&
+ (channel == peer_ctx->send_channel) )
+ {
+ return GNUNET_YES;
+ }
+ if ( (Peers_CHANNEL_ROLE_RECEIVING == role) &&
+ (channel == peer_ctx->recv_channel) )
+ {
+ return GNUNET_YES;
+ }
+ return GNUNET_NO;
+}
+
+
+/**
+ * @brief Destroy the send channel of a peer e.g. stop indicating a sending
+ * intention to another peer
+ *
+ * If there is also no channel to receive messages from that peer, remove it
+ * from the peermap.
+ * TODO really?
+ *
+ * @peer the peer identity of the peer whose sending channel to destroy
+ * @return #GNUNET_YES if channel was destroyed
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_destroy_sending_channel (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ {
+ return GNUNET_NO;
+ }
+ peer_ctx = get_peer_ctx (peer);
+ if (NULL != peer_ctx->send_channel)
+ {
+ set_channel_flag (peer_ctx->send_channel_flags, Peers_CHANNEL_CLEAN);
+ GNUNET_CADET_channel_destroy (peer_ctx->send_channel);
+ peer_ctx->send_channel = NULL;
+ peer_ctx->mq = NULL;
+ (void) Peers_check_connected (peer);
+ return GNUNET_YES;
+ }
+ return GNUNET_NO;
+}
+
+/**
+ * This is called when a channel is destroyed.
+ *
+ * @param cls The closure
+ * @param channel The channel being closed
+ */
+void
+Peers_cleanup_destroyed_channel (void *cls,
+ const struct GNUNET_CADET_Channel *channel)
+{
+ struct GNUNET_PeerIdentity *peer = cls;
+ struct PeerContext *peer_ctx;
+
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ {/* We don't want to implicitly create a context that we're about to kill */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "channel (%s) without associated context was destroyed\n",
+ GNUNET_i2s (peer));
+ return;
+ }
+ peer_ctx = get_peer_ctx (peer);
+
+ /* If our peer issued the destruction of the channel, the #Peers_TO_DESTROY
+ * flag will be set. In this case simply make sure that the channels are
+ * cleaned. */
+ /* FIXME This distinction seems to be redundant */
+ if (Peers_check_peer_flag (peer, Peers_TO_DESTROY))
+ {/* We initiatad the destruction of this particular peer */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer is in the process of being destroyed\n");
+ if (channel == peer_ctx->send_channel)
+ {
+ peer_ctx->send_channel = NULL;
+ peer_ctx->mq = NULL;
+ }
+ else if (channel == peer_ctx->recv_channel)
+ {
+ peer_ctx->recv_channel = NULL;
+ }
+
+ if (NULL != peer_ctx->send_channel)
+ {
+ GNUNET_CADET_channel_destroy (peer_ctx->send_channel);
+ peer_ctx->send_channel = NULL;
+ peer_ctx->mq = NULL;
+ }
+ if (NULL != peer_ctx->recv_channel)
+ {
+ GNUNET_CADET_channel_destroy (peer_ctx->recv_channel);
+ peer_ctx->recv_channel = NULL;
+ }
+ /* Set the #Peers_ONLINE flag accordingly */
+ (void) Peers_check_connected (peer);
+ return;
+ }
+
+ else
+ { /* We did not initiate the destruction of this peer */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer is NOT in the process of being destroyed\n");
+ 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;
+ peer_ctx->mq = NULL;
+ }
+ 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));
+ }
+ }
+ (void) Peers_check_connected (peer);
+}
+
+/**
+ * @brief Send a message to another peer.
+ *
+ * Keeps track about pending messages so they can be properly removed when the
+ * peer is destroyed.
+ *
+ * @param peer receeiver of the message
+ * @param ev envelope of the message
+ * @param type type of the message
+ */
+void
+Peers_send_message (const struct GNUNET_PeerIdentity *peer,
+ struct GNUNET_MQ_Envelope *ev,
+ const char *type)
+{
+ struct PendingMessage *pending_msg;
+ struct GNUNET_MQ_Handle *mq;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending message to %s of type %s\n",
+ GNUNET_i2s (peer),
+ type);
+ pending_msg = insert_pending_message (peer, ev, type);
+ mq = get_mq (peer);
+ GNUNET_MQ_notify_sent (ev,
+ mq_notify_sent_cb,
+ pending_msg);
+ GNUNET_MQ_send (mq, ev);
+}
+
+/**
+ * @brief Schedule a operation on given peer
+ *
+ * Avoids scheduling an operation twice.
+ *
+ * @param peer the peer we want to schedule the operation for once it gets live
+ *
+ * @return #GNUNET_YES if the operation was scheduled
+ * #GNUNET_NO otherwise
+ */
+int
+Peers_schedule_operation (const struct GNUNET_PeerIdentity *peer,
+ const PeerOp peer_op)
+{
+ struct PeerPendingOp pending_op;
+ struct PeerContext *peer_ctx;
+
+ if (0 == GNUNET_CRYPTO_cmp_peer_identity (peer, &own_identity))
+ {
+ return GNUNET_NO;
+ }
+ GNUNET_assert (GNUNET_YES == Peers_check_peer_known (peer));
+
+ //TODO if LIVE/ONLINE execute immediately
+
+ if (GNUNET_NO == check_operation_scheduled (peer, peer_op))
+ {
+ peer_ctx = get_peer_ctx (peer);
+ pending_op.op = peer_op;
+ pending_op.op_cls = NULL;
+ GNUNET_array_append (peer_ctx->pending_ops,
+ peer_ctx->num_pending_ops,
+ pending_op);
+ return GNUNET_YES;
+ }
+ return GNUNET_NO;
+}
+
+/**
+ * @brief Get the recv_channel of @a peer.
+ * Needed to correctly handle (call #GNUNET_CADET_receive_done()) incoming
+ * messages.
+ *
+ * @param peer The peer to get the recv_channel from.
+ *
+ * @return The recv_channel.
+ */
+struct GNUNET_CADET_Channel *
+Peers_get_recv_channel (const struct GNUNET_PeerIdentity *peer)
+{
+ struct PeerContext *peer_ctx;
+
+ GNUNET_assert (GNUNET_YES == Peers_check_peer_known (peer));
+ peer_ctx = get_peer_ctx (peer);
+ return peer_ctx->recv_channel;
+}
+/***********************************************************************
+ * /Old gnunet-service-rps_peers.c
+***********************************************************************/
+
+
+/***********************************************************************
+ * Housekeeping with clients
+***********************************************************************/
+
+/**
+ * Closure used to pass the client and the id to the callback
+ * that replies to a client's request
+ */
+struct ReplyCls
+{
+ /**
+ * DLL
+ */
+ struct ReplyCls *next;
+ struct ReplyCls *prev;
+
+ /**
+ * The identifier of the request
+ */
+ uint32_t id;
+
+ /**
+ * The handle to the request
+ */
+ struct RPS_SamplerRequestHandle *req_handle;
+
+ /**
+ * The client handle to send the reply to
+ */
+ struct ClientContext *cli_ctx;
+};
+
+
+/**
+ * Struct used to store the context of a connected client.
+ */
+struct ClientContext
+{
+ /**
+ * DLL
+ */
+ struct ClientContext *next;
+ struct ClientContext *prev;
+
+ /**
+ * The message queue to communicate with the client.
+ */
+ struct GNUNET_MQ_Handle *mq;
+
+ /**
+ * DLL with handles to single requests from the client
+ */
+ struct ReplyCls *rep_cls_head;
+ struct ReplyCls *rep_cls_tail;
+
+ /**
+ * @brief How many updates this client expects to receive.
+ */
+ int64_t view_updates_left;
+
+ /**
+ * The client handle to send the reply to
+ */
+ struct GNUNET_SERVICE_Client *client;
+};
+
+/**
+ * DLL with all clients currently connected to us
+ */
+struct ClientContext *cli_ctx_head;
+struct ClientContext *cli_ctx_tail;
+
/***********************************************************************
- * /Housekeeping with peers
+ * /Housekeeping with clients
***********************************************************************/
static struct RPS_Sampler *client_sampler;
/**
- * Set of all peers to keep track of them.
+ * Name to log view to
*/
-static struct GNUNET_CONTAINER_MultiPeerMap *peer_map;
-
+static const char *file_name_view_log;
+#ifdef TO_FILE
/**
- * Name to log view to
+ * Name to log number of observed peers to
*/
-static char *file_name_view_log;
+static const char *file_name_observed_log;
/**
- * The "local view" containing peers we learned from gossip and history
+ * @brief Count the observed peers
*/
-static struct GNUNET_CONTAINER_MultiPeerMap *view;
+static uint32_t num_observed_peers;
/**
- * 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.
+ * @brief Multipeermap (ab-) used to count unique peer_ids
*/
-static struct GNUNET_PeerIdentity *view_array;
-
+static struct GNUNET_CONTAINER_MultiPeerMap *observed_unique_peers;
+#endif /* TO_FILE */
/**
- * The size of sampler we need to be able to satisfy the client's need of
- * random peers.
+ * The size of sampler we need to be able to satisfy the client's need
+ * of random peers.
*/
static unsigned int sampler_size_client_need;
*/
static unsigned int sampler_size_est_need;
+/**
+ * @brief This is the minimum estimate used as sampler size.
+ *
+ * It is configured by the user.
+ */
+static unsigned int sampler_size_est_min;
+
+/**
+ * @brief This is the estimate used as view size.
+ *
+ * It is initialised with the minimum
+ */
+static unsigned int view_size_est_need;
+
+/**
+ * @brief This is the minimum estimate used as view size.
+ *
+ * It is configured by the user.
+ */
+static unsigned int view_size_est_min;
/**
* Percentage of total peer number in the view
*/
static float beta;
-/**
- * The percentage gamma of history updates.
- * Simply 1 - alpha - beta
- */
-
-
/**
* Identifier for the main task that runs periodically.
*/
*/
static struct GNUNET_TIME_Relative round_interval;
-
-
/**
* List to store peers received through pushes temporary.
- *
- * TODO -> multipeermap
*/
-static struct GNUNET_PeerIdentity *push_list;
-
-/**
- * Size of the push_list;
- */
-static unsigned int push_list_size;
-//size_t push_list_size;
+static struct CustomPeerMap *push_map;
/**
* List to store peers received through pulls temporary.
- *
- * TODO -> multipeermap
*/
-static struct GNUNET_PeerIdentity *pull_list;
-
-/**
- * Size of the pull_list;
- */
-static unsigned int pull_list_size;
-//size_t pull_list_size;
-
+static struct CustomPeerMap *pull_map;
/**
* Handler to NSE.
*/
static struct GNUNET_CADET_Handle *cadet_handle;
+/**
+ * @brief Port to communicate to other peers.
+ */
+static struct GNUNET_CADET_Port *cadet_port;
+
/**
* Handler to PEERINFO.
*/
/**
* Handle for cancellation of iteration over peers.
*/
-struct GNUNET_PEERINFO_NotifyContext *peerinfo_notify_handle;
-
+static struct GNUNET_PEERINFO_NotifyContext *peerinfo_notify_handle;
/**
* Request counter.
*
+ * Counts how many requets clients already issued.
* Only needed in the beginning to check how many of the 64 deltas
* we already have
*/
/**
* The prediction of the rate of requests
*/
-static struct GNUNET_TIME_Relative request_rate;
-
-
-/**
- * Number of history update tasks.
- */
-uint32_t num_hist_update_tasks;
+static struct GNUNET_TIME_Relative request_rate;
#ifdef ENABLE_MALICIOUS
* 2 Try to partition the network
* 3 Combined attack
*/
-uint32_t mal_type = 0;
+static uint32_t mal_type;
/**
* Other malicious peers
*/
-static struct GNUNET_PeerIdentity *mal_peers = NULL;
+static struct GNUNET_PeerIdentity *mal_peers;
/**
* 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;
+static struct GNUNET_CONTAINER_MultiPeerMap *mal_peer_set;
/**
* Number of other malicious peers
/**
* 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;
+static struct AttackedPeer *att_peers_head;
+static struct AttackedPeer *att_peers_tail;
/**
* 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;
+static struct AttackedPeer *att_peer_index;
/**
* 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;
+static struct GNUNET_CONTAINER_MultiPeerMap *att_peer_set;
/**
* Number of attacked peers
*/
-static uint32_t num_attacked_peers = 0;
-
+static uint32_t num_attacked_peers;
/**
* If type is 1 this is the attacked peer
***********************************************************************/
-
-
-
-
/***********************************************************************
* Util functions
***********************************************************************/
-/**
- * Set a peer flag of given peer context.
- */
-#define set_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags |= mask)
-
-/**
- * Get peer flag of given peer context.
- */
-#define get_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags & mask ? GNUNET_YES : GNUNET_NO)
-
-/**
- * Unset flag of given peer context.
- */
-#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);
-
-
-/**
- * Check if peer is already in peer array.
- */
- int
-in_arr (const struct GNUNET_PeerIdentity *array,
- unsigned int arr_size,
- const struct GNUNET_PeerIdentity *peer)
-{
- GNUNET_assert (NULL != peer);
-
- if (0 == arr_size)
- return GNUNET_NO;
-
- GNUNET_assert (NULL != array);
-
- unsigned int i;
-
- for (i = 0; i < arr_size ; i++)
- if (0 == GNUNET_CRYPTO_cmp_peer_identity (&array[i], peer))
- return GNUNET_YES;
- return GNUNET_NO;
-}
-
/**
* Print peerlist to log.
*/
-void
-print_peer_list (struct GNUNET_PeerIdentity *list, unsigned int len)
-{
- unsigned int i;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Printing peer list of length %u at %p:\n",
- len,
- list);
- for (i = 0 ; i < len ; i++)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "%u. peer: %s\n",
- i, GNUNET_i2s (&list[i]));
- }
-}
-
-
-/**
- * Remove peer from list.
- */
- void
-rem_from_list (struct GNUNET_PeerIdentity **peer_list,
- unsigned int *list_size,
- const struct GNUNET_PeerIdentity *peer)
+static void
+print_peer_list (struct GNUNET_PeerIdentity *list,
+ unsigned int len)
{
unsigned int i;
- struct GNUNET_PeerIdentity *tmp;
-
- tmp = *peer_list;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Removing peer %s from list at %p\n",
- GNUNET_i2s (peer),
- tmp);
-
- for ( i = 0 ; i < *list_size ; i++ )
- {
- if (0 == GNUNET_CRYPTO_cmp_peer_identity (&tmp[i], peer))
- {
- if (i < *list_size -1)
- { /* Not at the last entry -- shift peers left */
- memcpy (&tmp[i], &tmp[i +1],
- ((*list_size) - i -1) * sizeof (struct GNUNET_PeerIdentity));
- }
- /* Remove last entry (should be now useless PeerID) */
- GNUNET_array_grow (tmp, *list_size, (*list_size) -1);
- }
- }
- *peer_list = tmp;
-}
-
-/**
- * Get random peer from the given list but don't return one from the @a ignore_list.
- */
- struct GNUNET_PeerIdentity *
-get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list,
- uint32_t list_size,
- const struct GNUNET_PeerIdentity *ignore_list,
- uint32_t ignore_size)
-{
- uint32_t r_index;
- uint32_t tmp_size;
- struct GNUNET_PeerIdentity *tmp_peer_list;
- struct GNUNET_PeerIdentity *peer;
-
- GNUNET_assert (NULL != peer_list);
- if (0 == list_size)
- return NULL;
-
- tmp_size = 0;
- tmp_peer_list = NULL;
- GNUNET_array_grow (tmp_peer_list, tmp_size, list_size);
- memcpy (tmp_peer_list,
- peer_list,
- list_size * sizeof (struct GNUNET_PeerIdentity));
- peer = GNUNET_new (struct GNUNET_PeerIdentity);
-
- /**;
- * Choose the r_index of the peer we want to return
- * at random from the interval of the view
- */
- r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
- tmp_size);
- *peer = tmp_peer_list[r_index];
-
- while (in_arr (ignore_list, ignore_size, peer))
- {
- rem_from_list (&tmp_peer_list, &tmp_size, peer);
-
- print_peer_list (tmp_peer_list, tmp_size);
-
- if (0 == tmp_size)
- {
- GNUNET_free (peer);
- return NULL;
- }
-
- /**;
- * Choose the r_index of the peer we want to return
- * at random from the interval of the view
- */
- r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
- tmp_size);
- *peer = tmp_peer_list[r_index];
- }
-
-
- GNUNET_array_grow (tmp_peer_list, tmp_size, 0);
-
- return peer;
-}
-
-
-/**
- * Get the context of a peer. If not existing, create.
- */
- struct PeerContext *
-get_peer_ctx (const struct GNUNET_PeerIdentity *peer)
-{
- struct PeerContext *ctx;
- int ret;
-
- ret = GNUNET_CONTAINER_multipeermap_contains (peer_map, peer);
- GNUNET_assert (GNUNET_YES == ret);
- ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
- GNUNET_assert (NULL != ctx);
- return ctx;
-}
-
-/**
- * Create a new peer context and insert it into the peer map
- */
-struct PeerContext *
-create_peer_ctx (const struct GNUNET_PeerIdentity *peer)
-{
- struct PeerContext *ctx;
- int ret;
-
- ctx = GNUNET_new (struct PeerContext);
- ctx->peer_id = *peer;
- ret = GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
- GNUNET_assert (GNUNET_OK == ret);
- return ctx;
-}
-
-
-/**
- * Set the peer flag to living and call the outstanding operations on this peer.
- */
-static size_t
-peer_is_live (struct PeerContext *peer_ctx)
-{
- struct GNUNET_PeerIdentity *peer;
-
- /* Cancle transmit_handle if still scheduled */
- if (NULL != peer_ctx->transmit_handle)
- {
- GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->transmit_handle);
- peer_ctx->transmit_handle = NULL;
- }
-
- peer = &peer_ctx->peer_id;
- 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)
- { /* Call outstanding operations */
- unsigned int 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);
- }
- return 0;
-}
-
-
-/**
- * Callback that is called when a channel was effectively established.
- * This is given to ntfy_tmt_rdy and called when the channel was
- * successfully established.
- */
-static size_t
-cadet_ntfy_tmt_rdy_cb (void *cls, size_t size, void *buf)
-{
- struct PeerContext *peer_ctx = (struct PeerContext *) cls;
-
- peer_ctx->transmit_handle = NULL;
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Set ->transmit_handle = 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->transmit_handle)
- //{
- // LOG (GNUNET_ERROR_TYPE_DEBUG,
- // "Trying to cancle transmit_handle for peer %s\n",
- // GNUNET_i2s (&peer_ctx->peer_id));
- // GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->transmit_handle);
- // peer_ctx->transmit_handle = NULL;
- //}
-
- return 0;
-}
-
-
-/**
- * Get the channel of a peer. If not existing, create.
- */
- struct GNUNET_CADET_Channel *
-get_channel (const struct GNUNET_PeerIdentity *peer)
-{
- struct PeerContext *peer_ctx;
-
- peer_ctx = get_peer_ctx (peer);
- if (NULL == peer_ctx->send_channel)
- {
- 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);
-
- }
- return peer_ctx->send_channel;
-}
-
-
-/**
- * Get the message queue of a specific peer.
- *
- * If we already have a message queue open to this client,
- * simply return it, otherways create one.
- */
- struct GNUNET_MQ_Handle *
-get_mq (const struct GNUNET_PeerIdentity *peer_id)
-{
- struct PeerContext *peer_ctx;
-
- peer_ctx = get_peer_ctx (peer_id);
-
- GNUNET_assert (NULL == peer_ctx->transmit_handle);
-
- if (NULL == peer_ctx->mq)
+ "Printing peer list of length %u at %p:\n",
+ len,
+ list);
+ for (i = 0 ; i < len ; i++)
{
- (void) get_channel (peer_id);
- peer_ctx->mq = GNUNET_CADET_mq_create (peer_ctx->send_channel);
- //do I have to explicitly put it in the peer_map?
- (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer_id, peer_ctx,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "%u. peer: %s\n",
+ i, GNUNET_i2s (&list[i]));
}
- return peer_ctx->mq;
}
/**
- * Issue check whether peer is live
- *
- * @param peer_ctx the context of the peer
+ * Remove peer from list.
*/
-void
-check_peer_live (struct PeerContext *peer_ctx)
+static void
+rem_from_list (struct GNUNET_PeerIdentity **peer_list,
+ unsigned int *list_size,
+ const struct GNUNET_PeerIdentity *peer)
{
+ unsigned int i;
+ struct GNUNET_PeerIdentity *tmp;
+
+ tmp = *peer_list;
+
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Get informed about peer %s getting live\n",
- GNUNET_i2s (&peer_ctx->peer_id));
+ "Removing peer %s from list at %p\n",
+ GNUNET_i2s (peer),
+ tmp);
- if (NULL == peer_ctx->transmit_handle &&
- NULL == peer_ctx->send_channel)
+ for ( i = 0 ; i < *list_size ; i++ )
{
- (void) get_channel (&peer_ctx->peer_id);
- peer_ctx->transmit_handle =
- 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);
+ if (0 == GNUNET_CRYPTO_cmp_peer_identity (&tmp[i], peer))
+ {
+ if (i < *list_size -1)
+ { /* Not at the last entry -- shift peers left */
+ memmove (&tmp[i], &tmp[i +1],
+ ((*list_size) - i -1) * sizeof (struct GNUNET_PeerIdentity));
+ }
+ /* Remove last entry (should be now useless PeerID) */
+ GNUNET_array_grow (tmp, *list_size, (*list_size) -1);
+ }
}
- else if (NULL != peer_ctx->transmit_handle)
- 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");
+ *peer_list = tmp;
}
/**
* Sum all time relatives of an array.
- */
- struct GNUNET_TIME_Relative
-T_relative_sum (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
+ */
+static struct GNUNET_TIME_Relative
+T_relative_sum (const struct GNUNET_TIME_Relative *rel_array,
+ uint32_t arr_size)
{
struct GNUNET_TIME_Relative sum;
uint32_t i;
/**
* Compute the average of given time relatives.
*/
- struct GNUNET_TIME_Relative
-T_relative_avg (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
+static struct GNUNET_TIME_Relative
+T_relative_avg (const struct GNUNET_TIME_Relative *rel_array,
+ uint32_t arr_size)
{
- return GNUNET_TIME_relative_divide (T_relative_sum (rel_array, arr_size), arr_size);
+ return GNUNET_TIME_relative_divide (T_relative_sum (rel_array,
+ arr_size),
+ arr_size);
}
/**
- * Insert PeerID in #pull_list
+ * Insert PeerID in #view
*
* Called once we know a peer is live.
+ * Implements #PeerOp
+ *
+ * @return GNUNET_OK if peer was actually inserted
+ * GNUNET_NO if peer was not inserted
*/
- void
-insert_in_pull_list (void *cls, const struct GNUNET_PeerIdentity *peer)
-{
- if (GNUNET_NO == in_arr (pull_list, pull_list_size, peer))
- GNUNET_array_append (pull_list, pull_list_size, *peer);
-}
-
-/**
- * Check whether #insert_in_pull_list was already scheduled
- */
- int
-insert_in_pull_list_scheduled (const struct PeerContext *peer_ctx)
-{
- unsigned int i;
-
- for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
- if (insert_in_pull_list == peer_ctx->outstanding_ops[i].op)
- return GNUNET_YES;
- return GNUNET_NO;
-}
-
+static void
+insert_in_view_op (void *cls,
+ const struct GNUNET_PeerIdentity *peer);
/**
* Insert PeerID in #view
*
* Called once we know a peer is live.
+ *
+ * @return GNUNET_OK if peer was actually inserted
+ * GNUNET_NO if peer was not inserted
*/
- void
-insert_in_view (void *cls, const struct GNUNET_PeerIdentity *peer)
-{
- if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (view, peer))
- return;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Going to put %s into view\n",
- GNUNET_i2s (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");
- }
- if (NULL != view_array)
- {
- GNUNET_free (view_array);
- view_array = NULL;
- }
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
- create_peer_ctx (peer);
- (void) get_channel (peer);
-}
-
-/**
- * Check whether #insert_in_view was already scheduled
- */
- int
-insert_in_view_scheduled (const struct PeerContext *peer_ctx)
+static int
+insert_in_view (const struct GNUNET_PeerIdentity *peer)
{
- unsigned int i;
-
- for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
- if (insert_in_view == peer_ctx->outstanding_ops[i].op)
- return GNUNET_YES;
- return GNUNET_NO;
-}
-
+ int online;
-/**
- * Update sampler with given PeerID.
- */
- 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);
- if (0 < RPS_sampler_count_id (prot_sampler, peer))
+ online = Peers_check_peer_flag (peer, Peers_ONLINE);
+ if ( (GNUNET_NO == online) ||
+ (GNUNET_SYSERR == online) ) /* peer is not even known */
{
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
- (void) create_peer_ctx (peer);
- (void) get_channel (peer);
+ (void) Peers_issue_peer_liveliness_check (peer);
+ (void) Peers_schedule_operation (peer, insert_in_view_op);
+ return GNUNET_NO;
}
+ /* Open channel towards peer to keep connection open */
+ Peers_indicate_sending_intention (peer);
+ return View_put (peer);
}
-
/**
- * Check whether #insert_in_sampler was already scheduled
+ * @brief sends updates to clients that are interested
*/
-static int
-insert_in_sampler_scheduled (const struct PeerContext *peer_ctx)
-{
- unsigned int 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;
-}
+static void
+clients_notify_view_update (void);
/**
* Put random peer from sampler into the view as history update.
*/
- void
-hist_update (void *cls, struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
+static void
+hist_update (void *cls,
+ struct GNUNET_PeerIdentity *ids,
+ uint32_t num_peers)
{
unsigned int i;
- for (i = 0; i < GNUNET_MIN (
- sampler_size_est_need - GNUNET_CONTAINER_multipeermap_size (view),
- num_peers); i++)
+ for (i = 0; i < num_peers; i++)
{
- insert_in_view (NULL, &ids[i]);
+ (void) insert_in_view (&ids[i]);
to_file (file_name_view_log,
"+%s\t(hist)",
GNUNET_i2s_full (ids));
}
- if (0 < num_hist_update_tasks)
- num_hist_update_tasks--;
+ clients_notify_view_update();
}
-
/**
* Wrapper around #RPS_sampler_resize()
*
*
* Called every time we receive a request from the client.
*/
- void
+static void
est_request_rate()
{
struct GNUNET_TIME_Relative max_round_duration;
if ( 1 < req_counter)
{
/* Shift last request deltas to the right */
- memcpy (&request_deltas[1],
+ memmove (&request_deltas[1],
request_deltas,
(req_counter - 1) * sizeof (struct GNUNET_TIME_Relative));
GNUNET_TIME_absolute_get_difference (last_request,
GNUNET_TIME_absolute_get ());
request_rate = T_relative_avg (request_deltas, req_counter);
+ request_rate = (request_rate.rel_value_us < 1) ?
+ GNUNET_TIME_relative_get_unit_ () : request_rate;
/* Compute the duration a round will maximally take */
max_round_duration =
}
-/**
- * @brief Add an envelope to a message passed to mq to list of pending messages
- *
- * @param peer peer the message was sent to
- * @param ev envelope to the message
- * @param type type of the message to be sent
- */
-static struct PendingMessage *
-insert_pending_message (const struct GNUNET_PeerIdentity *peer,
- struct GNUNET_MQ_Envelope *ev,
- const char *type)
-{
- struct PendingMessage *pending_msg;
- struct PeerContext *peer_ctx;
-
- peer_ctx = get_peer_ctx (peer);
- pending_msg = GNUNET_new (struct PendingMessage);
- pending_msg->ev = ev;
- pending_msg->peer_ctx = peer_ctx;
- pending_msg->type = type;
- GNUNET_CONTAINER_DLL_insert (peer_ctx->pending_messages_head,
- peer_ctx->pending_messages_tail,
- pending_msg);
- return pending_msg;
-}
-
-static void
-remove_pending_message (struct PendingMessage *pending_msg)
-{
- struct PeerContext *peer_ctx;
-
- peer_ctx = pending_msg->peer_ctx;
- GNUNET_CONTAINER_DLL_remove (peer_ctx->pending_messages_head,
- peer_ctx->pending_messages_tail,
- pending_msg);
- GNUNET_free (pending_msg);
-}
-
-
-/**
- * @brief This is called once a message is sent.
- *
- * @param cls type of the message that was sent
- */
-static void
-mq_notify_sent_cb (void *cls)
-{
- struct PendingMessage *pending_msg = (struct PendingMessage *) cls;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "%s was sent.\n",
- pending_msg->type);
- remove_pending_message (pending_msg);
-}
-
-
/**
* Send a PULL REPLY to @a peer_id
*
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;
- struct PendingMessage *pending_msg;
/* Compute actual size */
send_size = sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) +
"Going to send PULL REPLY with %u peers to %s\n",
send_size, GNUNET_i2s (peer_id));
- mq = get_mq (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,
+ GNUNET_memcpy (&out_msg[1], peer_ids,
send_size * sizeof (struct GNUNET_PeerIdentity));
- pending_msg = insert_pending_message (peer_id, ev, "PULL REPLY");
- GNUNET_MQ_notify_sent (ev,
- mq_notify_sent_cb,
- pending_msg);
- GNUNET_MQ_send (mq, ev);
+ Peers_send_message (peer_id, ev, "PULL REPLY");
+ GNUNET_STATISTICS_update(stats, "# pull reply send issued", 1, GNUNET_NO);
}
/**
- * This function is called on new peer_ids from 'external' sources
- * (client seed, cadet get_peers(), ...)
+ * Insert PeerID in #pull_map
+ *
+ * Called once we know a peer is live.
+ */
+static void
+insert_in_pull_map (void *cls,
+ const struct GNUNET_PeerIdentity *peer)
+{
+ CustomPeerMap_put (pull_map, peer);
+}
+
+
+/**
+ * Insert PeerID in #view
+ *
+ * Called once we know a peer is live.
+ * Implements #PeerOp
+ */
+static void
+insert_in_view_op (void *cls,
+ const struct GNUNET_PeerIdentity *peer)
+{
+ (void) insert_in_view (peer);
+}
+
+
+/**
+ * Update sampler with given PeerID.
+ * Implements #PeerOp
+ */
+static 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);
+ if (0 < RPS_sampler_count_id (prot_sampler, peer))
+ {
+ /* Make sure we 'know' about this peer */
+ (void) Peers_issue_peer_liveliness_check (peer);
+ /* Establish a channel towards that peer to indicate we are going to send
+ * messages to it */
+ //Peers_indicate_sending_intention (peer);
+ }
+ #ifdef TO_FILE
+ num_observed_peers++;
+ GNUNET_CONTAINER_multipeermap_put
+ (observed_unique_peers,
+ peer,
+ NULL,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
+ uint32_t num_observed_unique_peers = GNUNET_CONTAINER_multipeermap_size (
+ observed_unique_peers);
+ to_file (file_name_observed_log,
+ "%" PRIu32 " %" PRIu32 " %f\n",
+ num_observed_peers,
+ num_observed_unique_peers,
+ 1.0*num_observed_unique_peers/num_observed_peers)
+ #endif /* TO_FILE */
+}
+
+/**
+ * @brief This is called on peers from external sources (cadet, peerinfo, ...)
+ * If the peer is not known, liveliness check is issued and it is
+ * scheduled to be inserted in sampler and view.
+ *
+ * "External sources" refer to every source except the gossip.
+ *
+ * @param peer peer to insert
+ */
+static void
+got_peer (const struct GNUNET_PeerIdentity *peer)
+{
+ /* If we did not know this peer already, insert it into sampler and view */
+ if (GNUNET_YES == Peers_issue_peer_liveliness_check (peer))
+ {
+ Peers_schedule_operation (peer, insert_in_sampler);
+ Peers_schedule_operation (peer, insert_in_view_op);
+ }
+}
+
+/**
+ * @brief Checks if there is a sending channel and if it is needed
+ *
+ * @param peer the peer whose sending channel is checked
+ * @return GNUNET_YES if sending channel exists and is still needed
+ * GNUNET_NO otherwise
+ */
+static int
+check_sending_channel_needed (const struct GNUNET_PeerIdentity *peer)
+{
+ /* struct GNUNET_CADET_Channel *channel; */
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ {
+ return GNUNET_NO;
+ }
+ if (GNUNET_YES == Peers_check_sending_channel_exists (peer))
+ {
+ if ( (0 < RPS_sampler_count_id (prot_sampler, peer)) ||
+ (GNUNET_YES == View_contains_peer (peer)) ||
+ (GNUNET_YES == CustomPeerMap_contains_peer (push_map, peer)) ||
+ (GNUNET_YES == CustomPeerMap_contains_peer (pull_map, peer)) ||
+ (GNUNET_YES == Peers_check_peer_flag (peer, Peers_PULL_REPLY_PENDING)))
+ { /* If we want to keep the connection to peer open */
+ return GNUNET_YES;
+ }
+ return GNUNET_NO;
+ }
+ return GNUNET_NO;
+}
+
+/**
+ * @brief remove peer from our knowledge, the view, push and pull maps and
+ * samplers.
+ *
+ * @param peer the peer to remove
+ */
+static void
+remove_peer (const struct GNUNET_PeerIdentity *peer)
+{
+ (void) View_remove_peer (peer);
+ CustomPeerMap_remove_peer (pull_map, peer);
+ CustomPeerMap_remove_peer (push_map, peer);
+ RPS_sampler_reinitialise_by_value (prot_sampler, peer);
+ RPS_sampler_reinitialise_by_value (client_sampler, peer);
+ Peers_remove_peer (peer);
+}
+
+
+/**
+ * @brief Remove data that is not needed anymore.
+ *
+ * If the sending channel is no longer needed it is destroyed.
+ *
+ * @param peer the peer whose data is about to be cleaned
+ */
+static void
+clean_peer (const struct GNUNET_PeerIdentity *peer)
+{
+ if (GNUNET_NO == check_sending_channel_needed (peer))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to remove send channel to peer %s\n",
+ GNUNET_i2s (peer));
+ #ifdef ENABLE_MALICIOUS
+ if (0 != GNUNET_CRYPTO_cmp_peer_identity (&attacked_peer, peer))
+ (void) Peers_destroy_sending_channel (peer);
+ #else /* ENABLE_MALICIOUS */
+ (void) Peers_destroy_sending_channel (peer);
+ #endif /* ENABLE_MALICIOUS */
+ }
+
+ if ( (GNUNET_NO == Peers_check_peer_send_intention (peer)) &&
+ (GNUNET_NO == View_contains_peer (peer)) &&
+ (GNUNET_NO == CustomPeerMap_contains_peer (push_map, peer)) &&
+ (GNUNET_NO == CustomPeerMap_contains_peer (push_map, peer)) &&
+ (0 == RPS_sampler_count_id (prot_sampler, peer)) &&
+ (0 == RPS_sampler_count_id (client_sampler, peer)) &&
+ (GNUNET_NO != Peers_check_removable (peer)) )
+ { /* We can safely remove this peer */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to remove peer %s\n",
+ GNUNET_i2s (peer));
+ remove_peer (peer);
+ return;
+ }
+}
+
+/**
+ * @brief This is called when a channel is destroyed.
*
- * @param peer_id the new peer_id
+ * Removes peer completely from our knowledge if the send_channel was destroyed
+ * Otherwise simply delete the recv_channel
+ * Also check if the knowledge about this peer is still needed.
+ * If not, remove this peer from our knowledge.
+ *
+ * @param cls The closure
+ * @param channel The channel being closed
+ * @param channel_ctx The context associated with this channel
*/
static void
-new_peer_id (const struct GNUNET_PeerIdentity *peer_id)
+cleanup_destroyed_channel (void *cls,
+ const struct GNUNET_CADET_Channel *channel)
{
- struct PeerOutstandingOp out_op;
+ struct GNUNET_PeerIdentity *peer = cls;
+ uint32_t *channel_flag;
struct PeerContext *peer_ctx;
- if ((NULL == peer_id) ||
- (0 == GNUNET_CRYPTO_cmp_peer_identity (&own_identity, peer_id)))
+ GNUNET_assert (NULL != peer);
+
+ if (GNUNET_NO == Peers_check_peer_known (peer))
+ { /* We don't know a context to that peer */
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "channel (%s) without associated context was destroyed\n",
+ GNUNET_i2s (peer));
+ GNUNET_free (peer);
return;
- 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));
-
- /* if the seed peer is already know, skip context creation */
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer_id))
- peer_ctx = create_peer_ctx (peer_id);
- else
- peer_ctx = get_peer_ctx (peer_id);
+ }
- if (GNUNET_NO == get_peer_flag (peer_ctx, VALID))
+ peer_ctx = get_peer_ctx (peer);
+ if (GNUNET_YES == Peers_check_channel_role (peer, channel, Peers_CHANNEL_ROLE_RECEIVING))
{
- 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);
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Callback on destruction of recv-channel was called (%s)\n",
+ GNUNET_i2s (peer));
+ set_channel_flag (peer_ctx->recv_channel_flags, Peers_CHANNEL_DESTROING);
+ } else if (GNUNET_YES == Peers_check_channel_role (peer, channel, Peers_CHANNEL_ROLE_SENDING))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Callback on destruction of send-channel was called (%s)\n",
+ GNUNET_i2s (peer));
+ set_channel_flag (peer_ctx->send_channel_flags, Peers_CHANNEL_DESTROING);
+ } else {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Channel to be destroyed has is neither sending nor receiving role\n");
+ }
- /* Trigger livelyness test on peer */
- check_peer_live (peer_ctx);
+ if (GNUNET_YES == Peers_check_peer_flag (peer, Peers_TO_DESTROY))
+ { /* We are in the middle of removing that peer from our knowledge. In this
+ case simply make sure that the channels are cleaned. */
+ Peers_cleanup_destroyed_channel (cls, channel);
+ to_file (file_name_view_log,
+ "-%s\t(cleanup channel, ourself)",
+ GNUNET_i2s_full (peer));
+ GNUNET_free (peer);
+ return;
}
- // else...?
- // send push/pull to each of those peers?
+ if (GNUNET_YES ==
+ Peers_check_channel_role (peer, channel, Peers_CHANNEL_ROLE_SENDING))
+ { /* Channel used for sending was destroyed */
+ /* Possible causes of channel destruction:
+ * - ourselves -> cleaning send channel -> clean context
+ * - other peer -> peer probably went down -> remove
+ */
+ channel_flag = Peers_get_channel_flag (peer, Peers_CHANNEL_ROLE_SENDING);
+ if (GNUNET_YES == Peers_check_channel_flag (channel_flag, Peers_CHANNEL_CLEAN))
+ { /* We are about to clean the sending channel. Clean the respective
+ * context */
+ Peers_cleanup_destroyed_channel (cls, channel);
+ GNUNET_free (peer);
+ return;
+ }
+ else
+ { /* Other peer destroyed our sending channel that he is supposed to keep
+ * open. It probably went down. Remove it from our knowledge. */
+ Peers_cleanup_destroyed_channel (cls, channel);
+ remove_peer (peer);
+ GNUNET_free (peer);
+ return;
+ }
+ }
+ else if (GNUNET_YES ==
+ Peers_check_channel_role (peer, channel, Peers_CHANNEL_ROLE_RECEIVING))
+ { /* Channel used for receiving was destroyed */
+ /* Possible causes of channel destruction:
+ * - ourselves -> peer tried to establish channel twice -> clean context
+ * - other peer -> peer doesn't want to send us data -> clean
+ */
+ channel_flag = Peers_get_channel_flag (peer, Peers_CHANNEL_ROLE_RECEIVING);
+ if (GNUNET_YES ==
+ Peers_check_channel_flag (channel_flag, Peers_CHANNEL_ESTABLISHED_TWICE))
+ { /* Other peer tried to establish a channel to us twice. We do not accept
+ * that. Clean the context. */
+ Peers_cleanup_destroyed_channel (cls, channel);
+ GNUNET_free (peer);
+ return;
+ }
+ else
+ { /* Other peer doesn't want to send us data anymore. We are free to clean
+ * it. */
+ Peers_cleanup_destroyed_channel (cls, channel);
+ clean_peer (peer);
+ GNUNET_free (peer);
+ return;
+ }
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Destroyed channel is neither sending nor receiving channel\n");
+ }
+ GNUNET_free (peer);
}
-
/***********************************************************************
* /Util functions
***********************************************************************/
{
struct ClientContext *cli_ctx;
- cli_ctx = GNUNET_SERVER_client_get_user_context (rep_cls->client,
- struct ClientContext);
+ cli_ctx = rep_cls->cli_ctx;
GNUNET_assert (NULL != cli_ctx);
+ if (NULL != rep_cls->req_handle)
+ {
+ RPS_sampler_request_cancel (rep_cls->req_handle);
+ }
GNUNET_CONTAINER_DLL_remove (cli_ctx->rep_cls_head,
cli_ctx->rep_cls_tail,
rep_cls);
GNUNET_free (rep_cls);
}
+
static void
destroy_cli_ctx (struct ClientContext *cli_ctx)
{
* Updates sizes of sampler list and view and adapt those lists
* accordingly.
*/
- void
-nse_callback (void *cls, struct GNUNET_TIME_Absolute timestamp,
+static void
+nse_callback (void *cls,
+ struct GNUNET_TIME_Absolute timestamp,
double logestimate, double std_dev)
{
double estimate;
estimate = pow (estimate, 1.0 / 3);
// TODO add if std_dev is a number
// estimate += (std_dev * scale);
- if (2 < ceil (estimate))
+ if (view_size_est_min < ceil (estimate))
{
LOG (GNUNET_ERROR_TYPE_DEBUG, "Changing estimate to %f\n", estimate);
sampler_size_est_need = estimate;
+ view_size_est_need = estimate;
} else
+ {
LOG (GNUNET_ERROR_TYPE_DEBUG, "Not using estimate %f\n", estimate);
+ //sampler_size_est_need = view_size_est_min;
+ view_size_est_need = view_size_est_min;
+ }
/* If the NSE has changed adapt the lists accordingly */
resize_wrapper (prot_sampler, sampler_size_est_need);
*
* Sends those to the requesting client.
*/
-void client_respond (void *cls,
- struct GNUNET_PeerIdentity *peer_ids, uint32_t num_peers)
+static void
+client_respond (void *cls,
+ struct GNUNET_PeerIdentity *peer_ids,
+ uint32_t num_peers)
{
+ struct ReplyCls *reply_cls = cls;
uint32_t i;
struct GNUNET_MQ_Envelope *ev;
struct GNUNET_RPS_CS_ReplyMessage *out_msg;
- struct ReplyCls *reply_cls = (struct ReplyCls *) cls;
uint32_t size_needed;
struct ClientContext *cli_ctx;
for (i = 0; i < num_peers; i++)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
- " %lu: %s\n",
+ " %" PRIu32 ": %s\n",
i,
GNUNET_i2s (&peer_ids[i]));
}
size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
num_peers * sizeof (struct GNUNET_PeerIdentity);
- GNUNET_assert (GNUNET_SERVER_MAX_MESSAGE_SIZE >= size_needed);
+ GNUNET_assert (GNUNET_MAX_MESSAGE_SIZE >= size_needed);
ev = GNUNET_MQ_msg_extra (out_msg,
num_peers * sizeof (struct GNUNET_PeerIdentity),
out_msg->num_peers = htonl (num_peers);
out_msg->id = htonl (reply_cls->id);
- memcpy (&out_msg[1],
+ GNUNET_memcpy (&out_msg[1],
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);
+ cli_ctx = reply_cls->cli_ctx;
GNUNET_assert (NULL != cli_ctx);
+ reply_cls->req_handle = NULL;
destroy_reply_cls (reply_cls);
GNUNET_MQ_send (cli_ctx->mq, ev);
}
* Handle RPS request from the client.
*
* @param cls closure
- * @param client identification of the client
* @param message the actual message
*/
static void
handle_client_request (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+ const struct GNUNET_RPS_CS_RequestMessage *msg)
{
- struct GNUNET_RPS_CS_RequestMessage *msg;
+ struct ClientContext *cli_ctx = cls;
uint32_t num_peers;
uint32_t size_needed;
struct ReplyCls *reply_cls;
uint32_t i;
- struct ClientContext *cli_ctx;
-
- msg = (struct GNUNET_RPS_CS_RequestMessage *) message;
num_peers = ntohl (msg->num_peers);
size_needed = sizeof (struct GNUNET_RPS_CS_RequestMessage) +
num_peers * sizeof (struct GNUNET_PeerIdentity);
- if (GNUNET_SERVER_MAX_MESSAGE_SIZE < size_needed)
+ if (GNUNET_MAX_MESSAGE_SIZE < size_needed)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Message received from client has size larger than expected\n");
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ GNUNET_SERVICE_client_drop (cli_ctx->client);
return;
}
reply_cls = GNUNET_new (struct ReplyCls);
reply_cls->id = ntohl (msg->id);
- reply_cls->client = client;
+ reply_cls->cli_ctx = cli_ctx;
reply_cls->req_handle = RPS_sampler_get_n_rand_peers (client_sampler,
client_respond,
reply_cls,
num_peers);
- cli_ctx = GNUNET_SERVER_client_get_user_context (client, struct ClientContext);
GNUNET_assert (NULL != cli_ctx);
GNUNET_CONTAINER_DLL_insert (cli_ctx->rep_cls_head,
cli_ctx->rep_cls_tail,
reply_cls);
- GNUNET_SERVER_receive_done (client,
- GNUNET_OK);
+ GNUNET_SERVICE_client_continue (cli_ctx->client);
}
* @brief Handle a message that requests the cancellation of a request
*
* @param cls unused
- * @param client the client that requests the cancellation
* @param message the message containing the id of the request
*/
static void
handle_client_request_cancel (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+ const struct GNUNET_RPS_CS_RequestCancelMessage *msg)
{
- struct GNUNET_RPS_CS_RequestCancelMessage *msg =
- (struct GNUNET_RPS_CS_RequestCancelMessage *) message;
- struct ClientContext *cli_ctx;
+ struct ClientContext *cli_ctx = cls;
struct ReplyCls *rep_cls;
- cli_ctx = GNUNET_SERVER_client_get_user_context (client, struct ClientContext);
+ GNUNET_assert (NULL != cli_ctx);
GNUNET_assert (NULL != cli_ctx->rep_cls_head);
rep_cls = cli_ctx->rep_cls_head;
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Client cancels request with id %lu\n",
+ "Client cancels request with id %" PRIu32 "\n",
ntohl (msg->id));
while ( (NULL != rep_cls->next) &&
(rep_cls->id != ntohl (msg->id)) )
rep_cls = rep_cls->next;
GNUNET_assert (rep_cls->id == ntohl (msg->id));
- RPS_sampler_request_cancel (rep_cls->req_handle);
destroy_reply_cls (rep_cls);
- GNUNET_SERVER_receive_done (client,
- GNUNET_OK);
+ GNUNET_SERVICE_client_continue (cli_ctx->client);
+}
+
+
+/**
+ * @brief This function is called, when the client seeds peers.
+ * It verifies that @a msg is well-formed.
+ *
+ * @param cls the closure (#ClientContext)
+ * @param msg the message
+ * @return #GNUNET_OK if @a msg is well-formed
+ */
+static int
+check_client_seed (void *cls, const struct GNUNET_RPS_CS_SeedMessage *msg)
+{
+ struct ClientContext *cli_ctx = cls;
+ uint16_t msize = ntohs (msg->header.size);
+ uint32_t num_peers = ntohl (msg->num_peers);
+
+ msize -= sizeof (struct GNUNET_RPS_CS_SeedMessage);
+ if ( (msize / sizeof (struct GNUNET_PeerIdentity) != num_peers) ||
+ (msize % sizeof (struct GNUNET_PeerIdentity) != 0) )
+ {
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (cli_ctx->client);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
}
* Handle seed from the client.
*
* @param cls closure
- * @param client identification of the client
* @param message the actual message
*/
- static void
+static void
handle_client_seed (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+ const struct GNUNET_RPS_CS_SeedMessage *msg)
{
- struct GNUNET_RPS_CS_SeedMessage *in_msg;
+ struct ClientContext *cli_ctx = cls;
struct GNUNET_PeerIdentity *peers;
uint32_t num_peers;
uint32_t i;
- if (sizeof (struct GNUNET_RPS_CS_SeedMessage) > ntohs (message->size))
- {
- GNUNET_break_op (0);
- GNUNET_SERVER_receive_done (client,
- GNUNET_SYSERR);
- }
-
- in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
- num_peers = ntohl (in_msg->num_peers);
- peers = (struct GNUNET_PeerIdentity *) &in_msg[1];
+ num_peers = ntohl (msg->num_peers);
+ peers = (struct GNUNET_PeerIdentity *) &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) != num_peers)
- {
- GNUNET_break_op (0);
- GNUNET_SERVER_receive_done (client,
- GNUNET_SYSERR);
- return;
- }
+ //GNUNET_memcpy (peers, &msg[1], num_peers * sizeof (struct GNUNET_PeerIdentity));
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Client seeded peers:\n");
print_peer_list (peers, num_peers);
- for (i = 0 ; i < num_peers ; i++)
+ 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]);
+ got_peer (&peers[i]);
}
////GNUNET_free (peers);
- GNUNET_SERVER_receive_done (client,
- GNUNET_OK);
+ GNUNET_SERVICE_client_continue (cli_ctx->client);
+}
+
+/**
+ * @brief Send view to client
+ *
+ * @param cli_ctx the context of the client
+ * @param view_array the peerids of the view as array (can be empty)
+ * @param view_size the size of the view array (can be 0)
+ */
+void
+send_view (const struct ClientContext *cli_ctx,
+ const struct GNUNET_PeerIdentity *view_array,
+ uint64_t view_size)
+{
+ struct GNUNET_MQ_Envelope *ev;
+ struct GNUNET_RPS_CS_DEBUG_ViewReply *out_msg;
+
+ if (NULL == view_array)
+ {
+ view_size = View_size ();
+ view_array = View_get_as_array();
+ }
+
+ ev = GNUNET_MQ_msg_extra (out_msg,
+ view_size * sizeof (struct GNUNET_PeerIdentity),
+ GNUNET_MESSAGE_TYPE_RPS_CS_DEBUG_VIEW_REPLY);
+ out_msg->num_peers = htonl (view_size);
+
+ GNUNET_memcpy (&out_msg[1],
+ view_array,
+ view_size * sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_MQ_send (cli_ctx->mq, ev);
+}
+
+/**
+ * @brief sends updates to clients that are interested
+ */
+static void
+clients_notify_view_update (void)
+{
+ struct ClientContext *cli_ctx_iter;
+ uint64_t num_peers;
+ const struct GNUNET_PeerIdentity *view_array;
+
+ num_peers = View_size ();
+ view_array = View_get_as_array();
+ /* check size of view is small enough */
+ if (GNUNET_MAX_MESSAGE_SIZE < num_peers)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "View is too big to send\n");
+ return;
+ }
+
+ for (cli_ctx_iter = cli_ctx_head;
+ NULL != cli_ctx_iter;
+ cli_ctx_iter = cli_ctx_head->next)
+ {
+ if (1 < cli_ctx_iter->view_updates_left)
+ {
+ /* Client wants to receive limited amount of updates */
+ cli_ctx_iter->view_updates_left -= 1;
+ } else if (1 == cli_ctx_iter->view_updates_left)
+ {
+ /* Last update of view for client */
+ cli_ctx_iter->view_updates_left = -1;
+ } else if (0 > cli_ctx_iter->view_updates_left) {
+ /* Client is not interested in updates */
+ continue;
+ }
+ /* else _updates_left == 0 - infinite amount of updates */
+
+ /* send view */
+ send_view (cli_ctx_iter, view_array, num_peers);
+ }
+}
+
+
+/**
+ * Handle RPS request from the client.
+ *
+ * @param cls closure
+ * @param message the actual message
+ */
+static void
+handle_client_view_request (void *cls,
+ const struct GNUNET_RPS_CS_DEBUG_ViewRequest *msg)
+{
+ struct ClientContext *cli_ctx = cls;
+ uint64_t num_updates;
+
+ num_updates = ntohl (msg->num_updates);
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Client requested %" PRIu64 " updates of view.\n",
+ num_updates);
+
+ GNUNET_assert (NULL != cli_ctx);
+ cli_ctx->view_updates_left = num_updates;
+ send_view (cli_ctx, NULL, 0);
+ GNUNET_SERVICE_client_continue (cli_ctx->client);
}
+/**
+ * Handle a CHECK_LIVE message from another peer.
+ *
+ * This does nothing. But without calling #GNUNET_CADET_receive_done()
+ * the channel is blocked for all other communication.
+ *
+ * @param cls Closure
+ * @param msg The message header
+ */
+static void
+handle_peer_check (void *cls,
+ const struct GNUNET_MessageHeader *msg)
+{
+ const struct GNUNET_PeerIdentity *peer = cls;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received CHECK_LIVE (%s)\n", GNUNET_i2s (peer));
+
+ GNUNET_break_op (Peers_check_peer_known (peer));
+ GNUNET_CADET_receive_done (Peers_get_recv_channel (peer));
+}
/**
* Handle a PUSH message from another peer.
* in the temporary list for pushed 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
*/
-static int
+static void
handle_peer_push (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **channel_ctx,
- const struct GNUNET_MessageHeader *msg)
+ const struct GNUNET_MessageHeader *msg)
{
- const struct GNUNET_PeerIdentity *peer;
-
- // (check the proof of work)
+ const struct GNUNET_PeerIdentity *peer = cls;
- peer = (const struct GNUNET_PeerIdentity *)
- GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
- // FIXME wait for cadet to change this function
+ // (check the proof of work (?))
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Received PUSH (%s)\n", GNUNET_i2s (peer));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received PUSH (%s)\n",
+ GNUNET_i2s (peer));
+ GNUNET_STATISTICS_update(stats, "# push message received", 1, GNUNET_NO);
#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)
+ if ( (1 == mal_type) ||
+ (3 == mal_type) )
{ /* Try to maximise representation */
+ tmp_att_peer = GNUNET_new (struct AttackedPeer);
+ tmp_att_peer->peer_id = *peer;
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))
+ 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);
+ /* We attack one single well-known peer - simply ignore */
}
-
#endif /* ENABLE_MALICIOUS */
- /* Add the sending peer to the push_list */
- if (GNUNET_NO == in_arr (push_list, push_list_size, peer))
- {
- GNUNET_assert (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer));
- GNUNET_array_append (push_list, push_list_size, *peer);
- }
-
- GNUNET_CADET_receive_done (channel);
- return GNUNET_OK;
-}
-
-
-/**
- * Iterator over hash map entries.
- * Called from #generate_view_array and writes every peer id into #view_array.
- *
- * @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
-dump_id_to_view_array (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
-{
- unsigned int *i = (unsigned int *) cls;
-
- view_array[(*i)++] = *key;
- return GNUNET_YES;
-}
-
+ /* Add the sending peer to the push_map */
+ CustomPeerMap_put (push_map, peer);
-/**
- * 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 (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);
- }
+ GNUNET_break_op (Peers_check_peer_known (peer));
+ GNUNET_CADET_receive_done (Peers_get_recv_channel (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
+static void
handle_peer_pull_request (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **channel_ctx,
- const struct GNUNET_MessageHeader *msg)
+ 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
+ struct GNUNET_PeerIdentity *peer = cls;
+ const struct GNUNET_PeerIdentity *view_array;
LOG (GNUNET_ERROR_TYPE_DEBUG, "Received PULL REQUEST (%s)\n", GNUNET_i2s (peer));
+ GNUNET_STATISTICS_update(stats, "# pull request message received", 1, GNUNET_NO);
#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;
}
else if (2 == mal_type)
{
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);
-
- GNUNET_CADET_receive_done (channel);
- return GNUNET_OK;
+ GNUNET_break_op (Peers_check_peer_known (peer));
+ GNUNET_CADET_receive_done (Peers_get_recv_channel (peer));
+ view_array = View_get_as_array ();
+ send_pull_reply (peer, view_array, View_size ());
}
/**
- * Handle PULL REPLY message from another peer.
- *
* Check whether we sent a corresponding request and
* whether this reply is the first one.
*
* @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
*/
- static int
-handle_peer_pull_reply (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **channel_ctx,
- const struct GNUNET_MessageHeader *msg)
+static int
+check_peer_pull_reply (void *cls,
+ const struct GNUNET_RPS_P2P_PullReplyMessage *msg)
{
- struct GNUNET_RPS_P2P_PullReplyMessage *in_msg;
- struct GNUNET_PeerIdentity *peers;
- struct PeerContext *peer_ctx;
- struct GNUNET_PeerIdentity *sender;
- struct PeerContext *sender_ctx;
- struct PeerOutstandingOp out_op;
- uint32_t i;
-#ifdef ENABLE_MALICIOUS
- struct AttackedPeer *tmp_att_peer;
-#endif /* ENABLE_MALICIOUS */
+ struct GNUNET_PeerIdentity *sender = cls;
- /* Check for protocol violation */
- if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->size))
+ if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->header.size))
{
GNUNET_break_op (0);
- GNUNET_CADET_receive_done (channel);
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->header.size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
+ sizeof (struct GNUNET_PeerIdentity) != ntohl (msg->num_peers))
{
LOG (GNUNET_ERROR_TYPE_ERROR,
- "message says it sends %" PRIu32 " peers, have space for %i peers\n",
- ntohl (in_msg->num_peers),
- (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
+ "message says it sends %" PRIu32 " peers, have space for %lu peers\n",
+ ntohl (msg->num_peers),
+ (ntohs (msg->header.size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
sizeof (struct GNUNET_PeerIdentity));
GNUNET_break_op (0);
- GNUNET_CADET_receive_done (channel);
return GNUNET_SYSERR;
}
- // Guess simply casting isn't the nicest way...
- // FIXME wait for cadet to change this function
- sender = (struct GNUNET_PeerIdentity *)
- GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
- sender_ctx = get_peer_ctx (sender);
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Received PULL REPLY (%s)\n", GNUNET_i2s (sender));
-
- if (GNUNET_YES != get_peer_flag (sender_ctx, PULL_REPLY_PENDING))
+ if (GNUNET_YES != Peers_check_peer_flag (sender, Peers_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);
- GNUNET_CADET_receive_done (channel);
- return GNUNET_OK;
+ return GNUNET_SYSERR;
}
+ return GNUNET_OK;
+}
+
+/**
+ * Handle PULL REPLY message from another peer.
+ *
+ * @param cls Closure
+ * @param msg The message header
+ */
+static void
+handle_peer_pull_reply (void *cls,
+ const struct GNUNET_RPS_P2P_PullReplyMessage *msg)
+{
+ const struct GNUNET_PeerIdentity *peers;
+ struct GNUNET_PeerIdentity *sender = cls;
+ uint32_t i;
+#ifdef ENABLE_MALICIOUS
+ struct AttackedPeer *tmp_att_peer;
+#endif /* ENABLE_MALICIOUS */
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Received PULL REPLY (%s)\n", GNUNET_i2s (sender));
+ GNUNET_STATISTICS_update(stats, "# pull reply messages received", 1, GNUNET_NO);
#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];
+ peers = (const struct GNUNET_PeerIdentity *) &msg[1];
LOG (GNUNET_ERROR_TYPE_DEBUG,
"PULL REPLY received, got following %u peers:\n",
- ntohl (in_msg->num_peers));
+ ntohl (msg->num_peers));
- for (i = 0 ; i < ntohl (in_msg->num_peers) ; i++)
+ for (i = 0; i < ntohl (msg->num_peers); i++)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"%u. %s\n",
if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity,
&peers[i]))
{
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (peer_map,
- &peers[i]))
- peer_ctx = create_peer_ctx (&peers[i]);
- else
- peer_ctx = get_peer_ctx (&peers[i]);
+ /* Make sure we 'know' about this peer */
+ (void) Peers_insert_peer (&peers[i]);
- if (GNUNET_YES == get_peer_flag (peer_ctx, VALID))
+ if (GNUNET_YES == Peers_check_peer_valid (&peers[i]))
{
- if (GNUNET_NO == in_arr (pull_list, pull_list_size, &peers[i]))
- GNUNET_array_append (pull_list, pull_list_size, peers[i]);
+ CustomPeerMap_put (pull_map, &peers[i]);
}
- else if (GNUNET_NO == insert_in_pull_list_scheduled (peer_ctx))
+ else
{
- 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);
+ Peers_schedule_operation (&peers[i], insert_in_pull_map);
+ (void) Peers_issue_peer_liveliness_check (&peers[i]);
}
}
}
- unset_peer_flag (sender_ctx, PULL_REPLY_PENDING);
-
- peer_clean (sender);
+ Peers_unset_peer_flag (sender, Peers_PULL_REPLY_PENDING);
+ clean_peer (sender);
- GNUNET_CADET_receive_done (channel);
- return GNUNET_OK;
+ GNUNET_break_op (Peers_check_peer_known (sender));
+ GNUNET_CADET_receive_done (Peers_get_recv_channel (sender));
}
* @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)
+compute_rand_delay (struct GNUNET_TIME_Relative mean,
+ unsigned int spread)
{
struct GNUNET_TIME_Relative half_interval;
struct GNUNET_TIME_Relative ret;
LOG (GNUNET_ERROR_TYPE_WARNING,
"Not accepting spread of 0\n");
GNUNET_break (0);
+ GNUNET_assert (0);
}
+ GNUNET_assert (0 != mean.rel_value_us);
/* Compute random time value between spread * mean and spread * mean */
half_interval = GNUNET_TIME_relative_divide (mean, spread);
* 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_saturating_multiply (mean, rand_delay);
ret = GNUNET_TIME_relative_divide (ret, max_rand_delay);
ret = GNUNET_TIME_relative_add (ret, half_interval);
* @param peer_id the peer to send the pull request to.
*/
static void
-send_pull_request (const struct GNUNET_PeerIdentity *peer_id)
+send_pull_request (const struct GNUNET_PeerIdentity *peer)
{
struct GNUNET_MQ_Envelope *ev;
- struct GNUNET_MQ_Handle *mq;
- struct PeerContext *peer_ctx;
- struct PendingMessage *pending_msg;
- peer_ctx = get_peer_ctx (peer_id);
- GNUNET_assert (GNUNET_NO == get_peer_flag (peer_ctx, PULL_REPLY_PENDING));
- set_peer_flag (peer_ctx, PULL_REPLY_PENDING);
+ GNUNET_assert (GNUNET_NO == Peers_check_peer_flag (peer,
+ Peers_PULL_REPLY_PENDING));
+ Peers_set_peer_flag (peer, Peers_PULL_REPLY_PENDING);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Going to send PULL REQUEST to peer %s.\n",
- GNUNET_i2s (peer_id));
+ GNUNET_i2s (peer));
ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
- mq = get_mq (peer_id);
- pending_msg = insert_pending_message (peer_id, ev, "PULL REQUEST");
- GNUNET_MQ_notify_sent (ev,
- mq_notify_sent_cb,
- pending_msg);
- GNUNET_MQ_send (mq, ev);
+ Peers_send_message (peer, ev, "PULL REQUEST");
+ GNUNET_STATISTICS_update(stats, "# pull request send issued", 1, GNUNET_NO);
}
send_push (const struct GNUNET_PeerIdentity *peer_id)
{
struct GNUNET_MQ_Envelope *ev;
- struct GNUNET_MQ_Handle *mq;
- struct PendingMessage *pending_msg;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Going to send PUSH to peer %s.\n",
GNUNET_i2s (peer_id));
ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
- mq = get_mq (peer_id);
- pending_msg = insert_pending_message (peer_id, ev, "PUSH");
- GNUNET_MQ_notify_sent (ev,
- mq_notify_sent_cb,
- pending_msg);
- GNUNET_MQ_send (mq, ev);
+ Peers_send_message (peer_id, ev, "PUSH");
+ GNUNET_STATISTICS_update(stats, "# push send issued", 1, GNUNET_NO);
}
static void
-do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+do_round (void *cls);
static void
-do_mal_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+do_mal_round (void *cls);
+
+#ifdef ENABLE_MALICIOUS
+
+
+/**
+ * @brief This function is called, when the client tells us to act malicious.
+ * It verifies that @a msg is well-formed.
+ *
+ * @param cls the closure (#ClientContext)
+ * @param msg the message
+ * @return #GNUNET_OK if @a msg is well-formed
+ */
+static int
+check_client_act_malicious (void *cls,
+ const struct GNUNET_RPS_CS_ActMaliciousMessage *msg)
+{
+ struct ClientContext *cli_ctx = cls;
+ uint16_t msize = ntohs (msg->header.size);
+ uint32_t num_peers = ntohl (msg->num_peers);
+ msize -= sizeof (struct GNUNET_RPS_CS_ActMaliciousMessage);
+ if ( (msize / sizeof (struct GNUNET_PeerIdentity) != num_peers) ||
+ (msize % sizeof (struct GNUNET_PeerIdentity) != 0) )
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "message says it sends %" PRIu32 " peers, have space for %lu peers\n",
+ ntohl (msg->num_peers),
+ (msize / sizeof (struct GNUNET_PeerIdentity)));
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (cli_ctx->client);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
-#ifdef ENABLE_MALICIOUS
/**
* Turn RPS service to act malicious.
*
* @param client The client that sent the message
* @param msg The message header
*/
- static void
+static void
handle_client_act_malicious (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *msg)
+ const struct GNUNET_RPS_CS_ActMaliciousMessage *msg)
{
- struct GNUNET_RPS_CS_ActMaliciousMessage *in_msg;
+ struct ClientContext *cli_ctx = cls;
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);
+ mal_type = ntohl (msg->type);
if (NULL == mal_peer_set)
mal_peer_set = GNUNET_CONTAINER_multipeermap_create (1, GNUNET_NO);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Now acting malicious type %" PRIu32 ", got %" PRIu32 " peers.\n",
mal_type,
- ntohl (in_msg->num_peers));
+ ntohl (msg->num_peers));
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_sent = ntohl (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],
+ GNUNET_memcpy (&mal_peers[num_mal_peers_old],
peers,
num_mal_peers_sent * sizeof (struct GNUNET_PeerIdentity));
do_round_task = GNUNET_SCHEDULER_add_now (&do_mal_round, NULL);
}
- else if (2 == mal_type
- || 3 == mal_type)
+ else if ( (2 == mal_type) ||
+ (3 == mal_type) )
{ /* Try to partition the network */
/* Add other malicious peers to those we already know */
- struct PeerContext *att_ctx;
- num_mal_peers_sent = ntohl (in_msg->num_peers) - 1;
+ num_mal_peers_sent = ntohl (msg->num_peers) - 1;
num_mal_peers_old = num_mal_peers;
GNUNET_array_grow (mal_peers,
num_mal_peers,
if (NULL != mal_peers &&
0 != num_mal_peers)
{
- memcpy (&mal_peers[num_mal_peers_old],
+ GNUNET_memcpy (&mal_peers[num_mal_peers_old],
peers,
num_mal_peers_sent * sizeof (struct GNUNET_PeerIdentity));
}
/* Store the one attacked peer */
- memcpy (&attacked_peer,
- &in_msg->attacked_peer,
+ GNUNET_memcpy (&attacked_peer,
+ &msg->attacked_peer,
sizeof (struct GNUNET_PeerIdentity));
/* Set the flag of the attacked peer to valid to avoid problems */
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (peer_map,
- &attacked_peer))
+ if (GNUNET_NO == Peers_check_peer_known (&attacked_peer))
{
- att_ctx = create_peer_ctx (&attacked_peer);
- check_peer_live (att_ctx);
+ (void) Peers_issue_peer_liveliness_check (&attacked_peer);
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
else
{
GNUNET_break (0);
+ GNUNET_SERVICE_client_continue (cli_ctx->client);
}
-
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ GNUNET_SERVICE_client_continue (cli_ctx->client);
}
* This is executed regylary.
*/
static void
-do_mal_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+do_mal_round (void *cls)
{
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",
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to execute next round maliciously type %" PRIu32 ".\n",
mal_type);
do_round_task = NULL;
GNUNET_assert (mal_type <= 3);
* Send as many pushes to the attacked peer as possible
* That is one push per round as it will ignore more.
*/
- peer_ctx = get_peer_ctx (&attacked_peer);
- if (GNUNET_YES == get_peer_flag (peer_ctx, VALID))
+ (void) Peers_issue_peer_liveliness_check (&attacked_peer);
+ if (GNUNET_YES == Peers_check_peer_flag (&attacked_peer, Peers_ONLINE))
send_push (&attacked_peer);
}
{ /* Combined attack */
/* Send PUSH to attacked peers */
- if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map,
- &attacked_peer))
+ if (GNUNET_YES == Peers_check_peer_known (&attacked_peer))
{
- peer_ctx = get_peer_ctx (&attacked_peer);
- if (GNUNET_YES == get_peer_flag (peer_ctx, VALID))
+ (void) Peers_issue_peer_liveliness_check (&attacked_peer);
+ if (GNUNET_YES == Peers_check_peer_flag (&attacked_peer, Peers_ONLINE))
{
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);
}
- else
- peer_ctx = create_peer_ctx (&attacked_peer);
- check_peer_live (peer_ctx);
+ (void) Peers_issue_peer_liveliness_check (&attacked_peer);
/* The maximum of pushes we're going to send this round */
num_pushes = GNUNET_MIN (GNUNET_MIN (push_limit - 1,
"Going to send %" PRIu32 " pushes\n",
num_pushes);
- for (i = 0 ; i < num_pushes ; i++)
+ for (i = 0; i < num_pushes; i++)
{
if (att_peers_tail == att_peer_index)
att_peer_index = att_peers_head;
/* 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++)
+ for (i = 0; i < num_pushes * alpha; i++)
{
if (att_peers_tail == tmp_att_peer)
tmp_att_peer = att_peers_head;
//do_round_task = GNUNET_SCHEDULER_add_delayed (round_interval, &do_mal_round,
//NULL);
GNUNET_assert (NULL == do_round_task);
- do_round_task = GNUNET_SCHEDULER_add_delayed (time_next_round, &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)
+do_round (void *cls)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round.\n");
-
uint32_t i;
- unsigned int view_size;
+ const struct GNUNET_PeerIdentity *view_array;
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;
+ struct GNUNET_PeerIdentity *update_peer;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Going to execute next round.\n");
+ GNUNET_STATISTICS_update(stats, "# rounds", 1, GNUNET_NO);
do_round_task = NULL;
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++)
+ view_array = View_get_as_array ();
+ for (i = 0; i < View_size (); i++)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"\t%s\n", GNUNET_i2s (&view_array[i]));
/* Send pushes and pull requests */
- if (0 < view_size)
+ if (0 < View_size ())
{
permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
- (unsigned int) view_size);
+ View_size ());
/* Send PUSHes */
- a_peers = ceil (alpha * view_size);
+ a_peers = ceil (alpha * View_size ());
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Going to send pushes to %u (ceil (%f * %u)) peers.\n",
- a_peers, alpha, view_size);
+ a_peers, alpha, View_size ());
for (i = 0; i < a_peers; i++)
{
peer = view_array[permut[i]];
}
/* Send PULL requests */
- b_peers = ceil (beta * view_size);
+ b_peers = ceil (beta * View_size ());
first_border = a_peers;
second_border = a_peers + b_peers;
- if (second_border > view_size)
+ if (second_border > View_size ())
{
- first_border = view_size - b_peers;
- 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);
+ b_peers, beta, View_size ());
for (i = first_border; i < second_border; i++)
{
peer = view_array[permut[i]];
- peer_ctx = get_peer_ctx (&peer);
if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer) &&
- GNUNET_NO == get_peer_flag (peer_ctx, PULL_REPLY_PENDING)) // TODO
+ GNUNET_NO == Peers_check_peer_flag (&peer, Peers_PULL_REPLY_PENDING)) // TODO
{ // FIXME if this fails schedule/loop this for later
send_pull_request (&peer);
}
/* 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)
- {
+ if ((CustomPeerMap_size (push_map) <= alpha * view_size_est_need) &&
+ (0 < CustomPeerMap_size (push_map)) &&
+ (0 < CustomPeerMap_size (pull_map)))
+ //if (GNUNET_YES) // disable blocking temporarily
+ { /* If conditions for update are fulfilled, update */
LOG (GNUNET_ERROR_TYPE_DEBUG, "Update of the view.\n");
uint32_t final_size;
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,
+ GNUNET_array_grow (peers_to_clean, peers_to_clean_size, View_size ());
+ GNUNET_memcpy (peers_to_clean,
view_array,
- view_size * sizeof (struct GNUNET_PeerIdentity));
+ 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);
+ View_clear ();
to_file (file_name_view_log,
"--- emptied ---");
- first_border = GNUNET_MIN (ceil (alpha * sampler_size_est_need),
- push_list_size);
+ first_border = GNUNET_MIN (ceil (alpha * view_size_est_need),
+ CustomPeerMap_size (push_map));
second_border = first_border +
- GNUNET_MIN (floor (beta * sampler_size_est_need),
- pull_list_size);
+ GNUNET_MIN (floor (beta * view_size_est_need),
+ CustomPeerMap_size (pull_map));
final_size = second_border +
- ceil ((1 - (alpha + beta)) * sampler_size_est_need);
-
- GNUNET_array_grow (view_array, view_size, second_border);
+ ceil ((1 - (alpha + beta)) * view_size_est_need);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "first border: %" PRIu32 ", second border: %" PRIu32 ", final size: %"PRIu32 "\n",
+ first_border,
+ second_border,
+ final_size);
/* Update view with peers received through PUSHes */
permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
- push_list_size);
+ CustomPeerMap_size (push_map));
for (i = 0; i < first_border; i++)
{
- view_array[i] = push_list[permut[i]];
- GNUNET_CONTAINER_multipeermap_put (view, &push_list[permut[i]], NULL,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
-
+ (void) insert_in_view (CustomPeerMap_get_peer_by_index (push_map,
+ permut[i]));
to_file (file_name_view_log,
"+%s\t(push list)",
GNUNET_i2s_full (&view_array[i]));
/* Update view with peers received through PULLs */
permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
- pull_list_size);
+ CustomPeerMap_size (pull_map));
for (i = first_border; i < second_border; i++)
{
- view_array[i] = pull_list[permut[i - first_border]];
- GNUNET_CONTAINER_multipeermap_put (view,
- &pull_list[permut[i - first_border]],
- NULL,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
-
+ (void) insert_in_view (CustomPeerMap_get_peer_by_index (pull_map,
+ permut[i - first_border]));
to_file (file_name_view_log,
"+%s\t(pull list)",
GNUNET_i2s_full (&view_array[i]));
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++)
+ 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 */
to_file (file_name_view_log,
"-%s",
GNUNET_i2s_full (&peers_to_clean[i]));
- peer_clean (&peers_to_clean[i]);
+ clean_peer (&peers_to_clean[i]);
+ //peer_destroy_channel_send (sender);
}
GNUNET_array_grow (peers_to_clean, peers_to_clean_size, 0);
- peers_to_clean = NULL;
- }
- else
- {
+ clients_notify_view_update();
+ } else {
LOG (GNUNET_ERROR_TYPE_DEBUG, "No update of the view.\n");
+ GNUNET_STATISTICS_update(stats, "# rounds blocked", 1, GNUNET_NO);
+ if (CustomPeerMap_size (push_map) > alpha * View_size () &&
+ !(0 >= CustomPeerMap_size (pull_map)))
+ GNUNET_STATISTICS_update(stats, "# rounds blocked - too many pushes", 1, GNUNET_NO);
+ if (CustomPeerMap_size (push_map) > alpha * View_size () &&
+ (0 >= CustomPeerMap_size (pull_map)))
+ GNUNET_STATISTICS_update(stats, "# rounds blocked - too many pushes, no pull replies", 1, GNUNET_NO);
+ if (0 >= CustomPeerMap_size (push_map) &&
+ !(0 >= CustomPeerMap_size (pull_map)))
+ GNUNET_STATISTICS_update(stats, "# rounds blocked - no pushes", 1, GNUNET_NO);
+ if (0 >= CustomPeerMap_size (push_map) &&
+ (0 >= CustomPeerMap_size (pull_map)))
+ GNUNET_STATISTICS_update(stats, "# rounds blocked - no pushes, no pull replies", 1, GNUNET_NO);
+ if (0 >= CustomPeerMap_size (pull_map) &&
+ CustomPeerMap_size (push_map) > alpha * View_size () &&
+ 0 >= CustomPeerMap_size (push_map))
+ GNUNET_STATISTICS_update(stats, "# rounds blocked - no pull replies", 1, GNUNET_NO);
}
// TODO independent of that also get some peers from CADET_get_peers()?
+ GNUNET_STATISTICS_set (stats,
+ "# peers in push map at end of round",
+ CustomPeerMap_size (push_map),
+ GNUNET_NO);
+ GNUNET_STATISTICS_set (stats,
+ "# peers in pull map at end of round",
+ CustomPeerMap_size (pull_map),
+ GNUNET_NO);
+ GNUNET_STATISTICS_set (stats,
+ "# peers in view at end of round",
+ View_size (),
+ GNUNET_NO);
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,
+ CustomPeerMap_size (push_map),
+ CustomPeerMap_size (pull_map),
alpha,
- view_size,
- alpha * view_size);
+ View_size (),
+ alpha * View_size ());
/* Update samplers */
- for (i = 0; i < push_list_size; i++)
+ for (i = 0; i < CustomPeerMap_size (push_map); i++)
{
+ update_peer = CustomPeerMap_get_peer_by_index (push_map, i);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Updating with peer %s from push list\n",
- GNUNET_i2s (&push_list[i]));
- insert_in_sampler (NULL, &push_list[i]);
- peer_clean (&push_list[i]); /* This cleans only if it is not in the view */
+ GNUNET_i2s (update_peer));
+ insert_in_sampler (NULL, update_peer);
+ clean_peer (update_peer); /* This cleans only if it is not in the view */
+ //peer_destroy_channel_send (sender);
}
- for (i = 0; i < pull_list_size; i++)
+ for (i = 0; i < CustomPeerMap_size (pull_map); i++)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Updating with peer %s from pull list\n",
- GNUNET_i2s (&pull_list[i]));
- insert_in_sampler (NULL, &pull_list[i]);
- peer_clean (&pull_list[i]); /* This cleans only if it is not in the view */
+ GNUNET_i2s (CustomPeerMap_get_peer_by_index (pull_map, i)));
+ insert_in_sampler (NULL, CustomPeerMap_get_peer_by_index (pull_map, i));
+ /* This cleans only if it is not in the view */
+ clean_peer (CustomPeerMap_get_peer_by_index (pull_map, i));
+ //peer_destroy_channel_send (sender);
}
/* Empty push/pull lists */
- GNUNET_array_grow (push_list, push_list_size, 0);
- GNUNET_array_grow (pull_list, pull_list_size, 0);
+ CustomPeerMap_clear (push_map);
+ CustomPeerMap_clear (pull_map);
struct GNUNET_TIME_Relative time_next_round;
time_next_round = compute_rand_delay (round_interval, 2);
/* Schedule next round */
- do_round_task = GNUNET_SCHEDULER_add_delayed (time_next_round, &do_round, NULL);
+ do_round_task = GNUNET_SCHEDULER_add_delayed (time_next_round,
+ &do_round, NULL);
LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
}
-static void
-rps_start (struct GNUNET_SERVER_Handle *server);
-
-
/**
* This is called from GNUNET_CADET_get_peers().
*
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Got peer_id %s from cadet\n",
GNUNET_i2s (peer));
- new_peer_id (peer);
+ got_peer (peer);
+ }
+}
+
+/**
+ * @brief Iterator function over stored, valid peers.
+ *
+ * We initialise the sampler with those.
+ *
+ * @param cls the closure
+ * @param peer the peer id
+ * @return #GNUNET_YES if we should continue to
+ * iterate,
+ * #GNUNET_NO if not.
+ */
+static int
+valid_peers_iterator (void *cls,
+ const struct GNUNET_PeerIdentity *peer)
+{
+ if (NULL != peer)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Got stored, valid peer %s\n",
+ GNUNET_i2s (peer));
+ got_peer (peer);
}
+ return GNUNET_YES;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Got peer_id %s from peerinfo\n",
GNUNET_i2s (peer));
- new_peer_id (peer);
+ got_peer (peer);
}
}
/**
- * Callback used to remove peers from the multipeermap.
+ * Task run during shutdown.
+ *
+ * @param cls unused
*/
- int
-peer_remove_cb (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
+static void
+shutdown_task (void *cls)
{
- struct PeerContext *peer_ctx;
- const struct GNUNET_CADET_Channel *channel =
- (const struct GNUNET_CADET_Channel *) cls;
-
- peer_ctx = (struct PeerContext *) value;
- set_peer_flag (peer_ctx, TO_DESTROY);
+ struct ClientContext *client_ctx;
+ struct ReplyCls *reply_cls;
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Going to remove peer %s\n",
- GNUNET_i2s (&peer_ctx->peer_id));
-
- /* Remove it from the sampler used for the Brahms protocol */
- RPS_sampler_reinitialise_by_value (prot_sampler, key);
-
- /* 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 we are still waiting for notification whether this peer is live
- * cancel the according task */
- if (NULL != peer_ctx->transmit_handle)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to cancle transmit_handle for peer %s\n",
- GNUNET_i2s (key));
- GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->transmit_handle);
- peer_ctx->transmit_handle = NULL;
- }
-
- unset_peer_flag (peer_ctx, PULL_REPLY_PENDING);
-
- /* Remove peer from view */
- if (GNUNET_CONTAINER_multipeermap_contains (view, key))
- {
- to_file (file_name_view_log,
- "-%s\t(cleanup channel, other peer)",
- GNUNET_i2s_full (key));
- GNUNET_CONTAINER_multipeermap_remove_all (view, key);
- if (NULL != view_array)
- {
- GNUNET_free (view_array);
- view_array = NULL;
- }
- }
-
- /* Remove from push and pull lists */
- if (GNUNET_YES == in_arr (push_list, push_list_size, key))
- rem_from_list (&push_list, &push_list_size, key);
- if (GNUNET_YES == in_arr (pull_list, pull_list_size, key))
- rem_from_list (&pull_list, &pull_list_size, key);
-
- /* Cancle messages that have not been sent yet */
- while (NULL != peer_ctx->pending_messages_head)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Removing unsent %s\n",
- peer_ctx->pending_messages_head->type);
- /* We are not able to cancel messages as #GNUNET_CADET_mq_create () does not
- * set a #GNUNET_MQ_CancelImpl */
- /* GNUNET_MQ_send_cancel (peer_ctx->pending_messages_head->ev); */
- remove_pending_message (peer_ctx->pending_messages_head);
- }
-
- /* 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;
- }
-
- /* 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 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; */
+ "RPS is going down\n");
- if ( (0 == RPS_sampler_count_id (prot_sampler, peer)) &&
- (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (view, peer)) &&
- (GNUNET_NO == in_arr (push_list, push_list_size, peer)) &&
- (GNUNET_NO == in_arr (pull_list, pull_list_size, peer)) &&
- (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer)) )
+ /* Clean all clients */
+ for (client_ctx = cli_ctx_head;
+ NULL != cli_ctx_head;
+ client_ctx = cli_ctx_head)
{
- peer_ctx = get_peer_ctx (peer);
-
- if ( (NULL == peer_ctx->recv_channel) &&
- (NULL == peer_ctx->pending_messages_head) &&
- (GNUNET_NO == get_peer_flag (peer_ctx, PULL_REPLY_PENDING)) )
+ /* Clean pending requests to the sampler */
+ for (reply_cls = client_ctx->rep_cls_head;
+ NULL != client_ctx->rep_cls_head;
+ reply_cls = client_ctx->rep_cls_head)
{
- #ifdef ENABLE_MALICIOUS
- if (0 != GNUNET_CRYPTO_cmp_peer_identity (&attacked_peer, peer))
- peer_remove_cb (NULL, peer, peer_ctx);
- #else /* ENABLE_MALICIOUS */
- peer_remove_cb (NULL, peer, peer_ctx);
- #endif /* ENABLE_MALICIOUS */
+ RPS_sampler_request_cancel (reply_cls->req_handle);
+ GNUNET_CONTAINER_DLL_remove (client_ctx->rep_cls_head,
+ client_ctx->rep_cls_tail,
+ reply_cls);
+ GNUNET_free (reply_cls);
}
+ GNUNET_CONTAINER_DLL_remove (cli_ctx_head, cli_ctx_tail, client_ctx);
+ GNUNET_free (client_ctx);
}
-}
-
-
-/**
- * Task run during shutdown.
- *
- * @param cls unused
- * @param tc unused
- */
-static void
-shutdown_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, "RPS is going down\n");
-
GNUNET_PEERINFO_notify_cancel (peerinfo_notify_handle);
GNUNET_PEERINFO_disconnect (peerinfo_handle);
do_round_task = 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");
- }
+ Peers_terminate ();
GNUNET_NSE_disconnect (nse);
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_close_port (cadet_port);
GNUNET_CADET_disconnect (cadet_handle);
- GNUNET_CONTAINER_multipeermap_destroy (peer_map);
- 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);
+ View_destroy ();
+ CustomPeerMap_destroy (push_map);
+ CustomPeerMap_destroy (pull_map);
+ if (NULL != stats)
+ {
+ GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+ stats = NULL;
+ }
#ifdef ENABLE_MALICIOUS
struct AttackedPeer *tmp_att_peer;
+ /* it is ok to free this const during shutdown: */
+ GNUNET_free ((char *) file_name_view_log);
+ #ifdef TO_FILE
+ GNUNET_free ((char *) file_name_observed_log);
+ GNUNET_CONTAINER_multipeermap_destroy (observed_unique_peers);
+ #endif /* TO_FILE */
GNUNET_array_grow (mal_peers, num_mal_peers, 0);
if (NULL != mal_peer_set)
GNUNET_CONTAINER_multipeermap_destroy (mal_peer_set);
/**
- * @brief Get informed about a connecting client.
+ * Handle client connecting to the service.
*
- * @param cls unused
- * @param client the client that connects
+ * @param cls NULL
+ * @param client the new client
+ * @param mq the message queue of @a client
+ * @return @a client
*/
-static void
-handle_client_connect (void *cls,
- struct GNUNET_SERVER_Client *client)
+static void *
+client_connect_cb (void *cls,
+ struct GNUNET_SERVICE_Client *client,
+ struct GNUNET_MQ_Handle *mq)
{
struct ClientContext *cli_ctx;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Client connected\n");
if (NULL == client)
- return; /* Server was destroyed before a client connected. Shutting down */
+ return client; /* Server was destroyed before a client connected. Shutting down */
cli_ctx = GNUNET_new (struct ClientContext);
- cli_ctx->mq = GNUNET_MQ_queue_for_server_client (client);
- GNUNET_SERVER_client_set_user_context (client, cli_ctx);
+ cli_ctx->mq = GNUNET_SERVICE_client_get_mq (client);
+ cli_ctx->view_updates_left = -1;
+ cli_ctx->client = client;
GNUNET_CONTAINER_DLL_insert (cli_ctx_head,
cli_ctx_tail,
cli_ctx);
+ return cli_ctx;
}
/**
- * A client disconnected. Remove all of its data structure entries.
+ * Callback called when a client disconnected from the service
*
- * @param cls closure, NULL
- * @param client identification of the client
+ * @param cls closure for the service
+ * @param c the client that disconnected
+ * @param internal_cls should be equal to @a c
*/
static void
-handle_client_disconnect (void *cls,
- struct GNUNET_SERVER_Client *client)
+client_disconnect_cb (void *cls,
+ struct GNUNET_SERVICE_Client *client,
+ void *internal_cls)
{
- struct ClientContext *cli_ctx;
+ struct ClientContext *cli_ctx = internal_cls;
+ GNUNET_assert (client == cli_ctx->client);
if (NULL == client)
- {/* shutdown task */
+ {/* shutdown task - destroy all clients */
while (NULL != cli_ctx_head)
destroy_cli_ctx (cli_ctx_head);
}
else
- {
- cli_ctx = GNUNET_SERVER_client_get_user_context (client, struct ClientContext);
- destroy_cli_ctx (cli_ctx);
- }
-}
-
-
-/**
- * Handle the channel a peer opens to us.
- *
- * @param cls The closure
- * @param channel The channel the peer wants to establish
- * @param initiator The peer's peer ID
- * @param port The port the channel is being established over
- * @param options Further options
- */
- static void *
-handle_inbound_channel (void *cls,
- struct GNUNET_CADET_Channel *channel,
- const struct GNUNET_PeerIdentity *initiator,
- uint32_t port,
- enum GNUNET_CADET_ChannelOption options)
-{
- struct PeerContext *peer_ctx;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "New channel was established to us (Peer %s).\n",
- GNUNET_i2s (initiator));
- GNUNET_assert (NULL != channel); /* according to cadet API */
- if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (peer_map, initiator))
- peer_ctx = create_peer_ctx (initiator);
- else
- peer_ctx = get_peer_ctx (initiator);
- /* We only accept one incoming channel from peers */
- if (NULL != peer_ctx->recv_channel)
- {
- GNUNET_CADET_channel_destroy (channel);
- return NULL;
- }
- peer_ctx->recv_channel = channel;
- peer_is_live (peer_ctx);
- return NULL;
-}
-
-
-/**
- * This is called when a channel is destroyed.
- *
- * @param cls The closure
- * @param channel The channel being closed
- * @param channel_ctx The context associated with this channel
- */
- static void
-cleanup_channel (void *cls,
- const struct GNUNET_CADET_Channel *channel,
- void *channel_ctx)
-{
- struct GNUNET_PeerIdentity *peer;
- struct PeerContext *peer_ctx;
-
- peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
- (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
-
- 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 (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;
-
- to_file (file_name_view_log,
- "-%s\t(cleanup channel, ourself)",
- GNUNET_i2s_full (peer));
- }
-
- else
- { /* 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 */
+ { /* destroy this client */
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "channel (%s) without associated context was destroyed\n",
- GNUNET_i2s (peer));
+ "Client disconnected. Destroy its context.\n");
+ destroy_cli_ctx (cli_ctx);
}
}
/**
- * Actually start the service.
- */
- static void
-rps_start (struct GNUNET_SERVER_Handle *server)
-{
- static const struct GNUNET_SERVER_MessageHandler handlers[] = {
- {&handle_client_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
- sizeof (struct GNUNET_RPS_CS_RequestMessage)},
- {&handle_client_request_cancel, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST_CANCEL,
- sizeof (struct GNUNET_RPS_CS_RequestCancelMessage)},
- {&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_connect_notify (server,
- &handle_client_connect,
- NULL);
- GNUNET_SERVER_disconnect_notify (server,
- &handle_client_disconnect,
- NULL);
- LOG (GNUNET_ERROR_TYPE_INFO, "Ready to receive requests from clients\n");
-
-
- 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);
-}
-
-
-/**
- * Process statistics requests.
+ * Handle random peer sampling clients.
*
* @param cls closure
- * @param server the initialized server
* @param c configuration to use
+ * @param service the initialized service
*/
- static void
+static void
run (void *cls,
- struct GNUNET_SERVER_Handle *server,
- const struct GNUNET_CONFIGURATION_Handle *c)
+ const struct GNUNET_CONFIGURATION_Handle *c,
+ struct GNUNET_SERVICE_Handle *service)
{
- int size;
- int out_size;
+ char* fn_valid_peers;
+ struct GNUNET_HashCode port;
- // 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);
cfg = c;
/* 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))
+ GNUNET_CONFIGURATION_get_value_number (cfg, "RPS", "MINSIZE",
+ (long long unsigned int *) &sampler_size_est_min))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
- "RPS", "INITSIZE");
+ "RPS", "MINSIZE");
GNUNET_SCHEDULER_shutdown ();
return;
}
- LOG (GNUNET_ERROR_TYPE_DEBUG, "INITSIZE is %" PRIu64 "\n", sampler_size_est_need);
-
-
- view = GNUNET_CONTAINER_multipeermap_create (4, GNUNET_NO);
+ sampler_size_est_need = sampler_size_est_min;
+ view_size_est_min = sampler_size_est_min;
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "MINSIZE is %u\n", sampler_size_est_min);
- /* file_name_view_log */
- if (GNUNET_OK != GNUNET_DISK_directory_create ("/tmp/rps/"))
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (cfg,
+ "rps",
+ "FILENAME_VALID_PEERS",
+ &fn_valid_peers))
{
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "Failed to create directory /tmp/rps/\n");
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ "rps", "FILENAME_VALID_PEERS");
}
- 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);
- }
+ View_create (view_size_est_min);
+
+ /* file_name_view_log */
+ file_name_view_log = store_prefix_file_name (&own_identity, "view");
+ #ifdef TO_FILE
+ file_name_observed_log = store_prefix_file_name (&own_identity, "observed");
+ observed_unique_peers = GNUNET_CONTAINER_multipeermap_create (1, GNUNET_NO);
+ #endif /* TO_FILE */
/* connect to NSE */
nse = GNUNET_NSE_connect (cfg, nse_callback, NULL);
alpha = 0.45;
beta = 0.45;
- peer_map = GNUNET_CONTAINER_multipeermap_create (sampler_size_est_need, GNUNET_NO);
-
/* Initialise cadet */
- static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
- {&handle_peer_push , GNUNET_MESSAGE_TYPE_RPS_PP_PUSH ,
- sizeof (struct GNUNET_MessageHeader)},
- {&handle_peer_pull_request, GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST,
- sizeof (struct GNUNET_MessageHeader)},
- {&handle_peer_pull_reply , GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY , 0},
- {NULL, 0, 0}
+ /* There exists a copy-paste-clone in get_channel() */
+ struct GNUNET_MQ_MessageHandler cadet_handlers[] = {
+ GNUNET_MQ_hd_fixed_size (peer_check,
+ GNUNET_MESSAGE_TYPE_RPS_PP_CHECK_LIVE,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (peer_push,
+ GNUNET_MESSAGE_TYPE_RPS_PP_PUSH,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (peer_pull_request,
+ GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_var_size (peer_pull_reply,
+ GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY,
+ struct GNUNET_RPS_P2P_PullReplyMessage,
+ NULL),
+ GNUNET_MQ_handler_end ()
};
- const uint32_t ports[] = {GNUNET_RPS_CADET_PORT, 0}; // _PORT specified in src/rps/rps.h
- cadet_handle = GNUNET_CADET_connect (cfg,
- cls,
- &handle_inbound_channel,
- &cleanup_channel,
- cadet_handlers,
- ports);
+ cadet_handle = GNUNET_CADET_connect (cfg);
+ GNUNET_assert (NULL != cadet_handle);
+ GNUNET_CRYPTO_hash (GNUNET_APPLICATION_PORT_RPS,
+ strlen (GNUNET_APPLICATION_PORT_RPS),
+ &port);
+ cadet_port = GNUNET_CADET_open_port (cadet_handle,
+ &port,
+ &Peers_handle_inbound_channel, /* Connect handler */
+ NULL, /* cls */
+ NULL, /* WindowSize handler */
+ cleanup_destroyed_channel, /* Disconnect handler */
+ cadet_handlers);
+
peerinfo_handle = GNUNET_PEERINFO_connect (cfg);
+ Peers_initialise (fn_valid_peers, cadet_handle, &own_identity);
+ GNUNET_free (fn_valid_peers);
/* Initialise sampler */
struct GNUNET_TIME_Relative half_round_interval;
struct GNUNET_TIME_Relative max_round_interval;
- half_round_interval = GNUNET_TIME_relative_multiply (round_interval, .5);
+ half_round_interval = GNUNET_TIME_relative_divide (round_interval, 2);
max_round_interval = GNUNET_TIME_relative_add (round_interval, half_round_interval);
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;
-
+ push_map = CustomPeerMap_create (4);
+ pull_map = CustomPeerMap_create (4);
- 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);
+ //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?
+ // TODO read stored valid peers from last run
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Requesting stored valid peers\n");
+ Peers_get_valid_peers (valid_peers_iterator, NULL);
peerinfo_notify_handle = GNUNET_PEERINFO_notify (cfg,
GNUNET_NO,
process_peerinfo_peers,
NULL);
- rps_start (server);
+ LOG (GNUNET_ERROR_TYPE_INFO, "Ready to receive requests from clients\n");
+
+ do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Scheduled first round\n");
+
+ GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
+ stats = GNUNET_STATISTICS_create ("rps", cfg);
+
}
/**
- * The main function for the rps service.
- *
- * @param argc number of arguments from the command line
- * @param argv command line arguments
- * @return 0 ok, 1 on error
+ * Define "main" method using service macro.
*/
- int
-main (int argc, char *const *argv)
-{
- return (GNUNET_OK ==
- GNUNET_SERVICE_run (argc,
- argv,
- "rps",
- GNUNET_SERVICE_OPTION_NONE,
- &run, NULL)) ? 0 : 1;
-}
+GNUNET_SERVICE_MAIN
+("rps",
+ GNUNET_SERVICE_OPTION_NONE,
+ &run,
+ &client_connect_cb,
+ &client_disconnect_cb,
+ NULL,
+ GNUNET_MQ_hd_fixed_size (client_request,
+ GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
+ struct GNUNET_RPS_CS_RequestMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (client_request_cancel,
+ GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST_CANCEL,
+ struct GNUNET_RPS_CS_RequestCancelMessage,
+ NULL),
+ GNUNET_MQ_hd_var_size (client_seed,
+ GNUNET_MESSAGE_TYPE_RPS_CS_SEED,
+ struct GNUNET_RPS_CS_SeedMessage,
+ NULL),
+#ifdef ENABLE_MALICIOUS
+ GNUNET_MQ_hd_var_size (client_act_malicious,
+ GNUNET_MESSAGE_TYPE_RPS_ACT_MALICIOUS,
+ struct GNUNET_RPS_CS_ActMaliciousMessage,
+ NULL),
+#endif /* ENABLE_MALICIOUS */
+ GNUNET_MQ_hd_fixed_size (client_view_request,
+ GNUNET_MESSAGE_TYPE_RPS_CS_DEBUG_VIEW_REQUEST,
+ struct GNUNET_RPS_CS_DEBUG_ViewRequest,
+ NULL),
+ GNUNET_MQ_handler_end());
/* end of gnunet-service-rps.c */
projects / oweals / gnunet.git / blobdiff