/******************************************************************************/
/**
- * Struct containing info about a queued transmission to this peer
- */
-struct CadetPeerQueue
-{
- /**
- * DLL next
- */
- struct CadetPeerQueue *next;
-
- /**
- * DLL previous
- */
- struct CadetPeerQueue *prev;
-
- /**
- * Peer this transmission is directed to.
- */
- struct CadetPeer *peer;
-
- /**
- * Connection this message belongs to.
- */
- struct CadetConnection *c;
-
- /**
- * Is FWD in c?
- */
- int fwd;
-
- /**
- * Pointer to info stucture used as cls.
- */
- void *cls;
-
- /**
- * Type of message
- */
- uint16_t type;
-
- /**
- * Type of message
- */
- uint16_t payload_type;
-
- /**
- * Type of message
- */
- uint32_t payload_id;
-
- /**
- * Size of the message
- */
- size_t size;
-
- /**
- * Set when this message starts waiting for CORE.
- */
- struct GNUNET_TIME_Absolute start_waiting;
-
- /**
- * Function to call on sending.
- */
- GCP_sent cont;
-
- /**
- * Closure for callback.
- */
- void *cont_cls;
+ * Information about a queued message on the peer level.
+ */
+struct CadetPeerQueue {
+
+ struct CadetPeerQueue *next;
+ struct CadetPeerQueue *prev;
+
+ /**
+ * Envelope to cancel message before MQ sends it.
+ */
+ struct GNUNET_MQ_Envelope *env;
+
+ /**
+ * Peer (neighbor) this message is being sent to.
+ */
+ struct CadetPeer *peer;
+
+ /**
+ * Continuation to call to notify higher layers about message sent.
+ */
+ GCP_sent cont;
+
+ /**
+ * Closure for @a cont.
+ */
+ void *cont_cls;
+
+ /**
+ * Task to asynchronously run the drop continuation.
+ */
+ struct GNUNET_SCHEDULER_Task *drop_task;
+
+ /**
+ * Time when message was queued for sending.
+ */
+ struct GNUNET_TIME_Absolute queue_timestamp;
+
+ /**
+ * #GNUNET_YES if message was management traffic (POLL, ACK, ...).
+ */
+ int management_traffic;
+
+ /**
+ * Message type.
+ */
+ uint16_t type;
+
+ /**
+ * Message size.
+ */
+ uint16_t size;
+
+ /**
+ * Type of the message's payload, if it was encrypted data.
+ */
+ uint16_t payload_type;
+
+ /**
+ * ID of the payload (PID, ACK #, ...).
+ */
+ struct CadetEncryptedMessageIdentifier payload_id;
+
+ /**
+ * Connection this message was sent on.
+ */
+ struct CadetConnection *c;
+
+ /**
+ * Direction in @a c this message was send on (#GNUNET_YES = FWD).
+ */
+ int c_fwd;
};
*/
struct CadetPeer
{
- /**
- * ID of the peer
- */
- GNUNET_PEER_Id id;
-
- /**
- * Last time we heard from this peer
- */
- struct GNUNET_TIME_Absolute last_contact;
-
- /**
- * Paths to reach the peer, ordered by ascending hop count
- */
- struct CadetPeerPath *path_head;
-
- /**
- * Paths to reach the peer, ordered by ascending hop count
- */
- struct CadetPeerPath *path_tail;
-
- /**
- * Handle to stop the DHT search for paths to this peer
- */
- struct GCD_search_handle *search_h;
-
- /**
- * Handle to stop the DHT search for paths to this peer
- */
- struct GNUNET_SCHEDULER_Task *search_delayed;
-
- /**
- * Tunnel to this peer, if any.
- */
- struct CadetTunnel *tunnel;
-
- /**
- * Connections that go through this peer; indexed by tid.
- */
- struct GNUNET_CONTAINER_MultiHashMap *connections;
-
- /**
- * Handle for queued transmissions
- */
- struct GNUNET_CORE_TransmitHandle *core_transmit;
-
- /**
- * Timestamp
- */
- struct GNUNET_TIME_Absolute tmt_time;
-
- /**
- * Transmission queue to core DLL head
- */
- struct CadetPeerQueue *queue_head;
-
- /**
- * Transmission queue to core DLL tail
- */
- struct CadetPeerQueue *queue_tail;
-
- /**
- * How many messages are in the queue to this peer.
- */
- unsigned int queue_n;
-
- /**
- * Hello message.
- */
- struct GNUNET_HELLO_Message* hello;
-
- /**
- * Handle to us offering the HELLO to the transport.
- */
- struct GNUNET_TRANSPORT_OfferHelloHandle *hello_offer;
-
- /**
- * Handle to our ATS request asking ATS to suggest an address
- * to TRANSPORT for this peer (to establish a direct link).
- */
- struct GNUNET_ATS_ConnectivitySuggestHandle *connectivity_suggestion;
+ /**
+ * ID of the peer
+ */
+ GNUNET_PEER_Id id;
+
+ struct CadetPeerQueue *q_head;
+ struct CadetPeerQueue *q_tail;
+
+ /**
+ * Last time we heard from this peer
+ */
+ struct GNUNET_TIME_Absolute last_contact;
+
+ /**
+ * Paths to reach the peer, ordered by ascending hop count
+ */
+ struct CadetPeerPath *path_head;
+
+ /**
+ * Paths to reach the peer, ordered by ascending hop count
+ */
+ struct CadetPeerPath *path_tail;
+
+ /**
+ * Handle to stop the DHT search for paths to this peer
+ */
+ struct GCD_search_handle *search_h;
+
+ /**
+ * Handle to stop the DHT search for paths to this peer
+ */
+ struct GNUNET_SCHEDULER_Task *search_delayed;
+
+ /**
+ * Tunnel to this peer, if any.
+ */
+ struct CadetTunnel *tunnel;
+
+ /**
+ * Connections that go through this peer; indexed by tid.
+ */
+ struct GNUNET_CONTAINER_MultiShortmap *connections;
+
+ /**
+ * Handle for core transmissions.
+ */
+ struct GNUNET_MQ_Handle *core_mq;
+
+ /**
+ * How many messages are in the queue to this peer.
+ */
+ unsigned int queue_n;
+
+ /**
+ * Hello message.
+ */
+ struct GNUNET_HELLO_Message* hello;
+
+ /**
+ * Handle to us offering the HELLO to the transport.
+ */
+ struct GNUNET_TRANSPORT_OfferHelloHandle *hello_offer;
+
+ /**
+ * Handle to our ATS request asking ATS to suggest an address
+ * to TRANSPORT for this peer (to establish a direct link).
+ */
+ struct GNUNET_ATS_ConnectivitySuggestHandle *connectivity_suggestion;
};
static struct GNUNET_CORE_Handle *core_handle;
/**
- * Handle to communicate with ATS.
+ * Our configuration;
*/
-static struct GNUNET_ATS_ConnectivityHandle *ats_ch;
+static const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
- * Handle to try to start new connections.
+ * Handle to communicate with ATS.
*/
-static struct GNUNET_TRANSPORT_Handle *transport_handle;
+static struct GNUNET_ATS_ConnectivityHandle *ats_ch;
/**
* Shutdown falg.
static int in_shutdown;
-/******************************************************************************/
-/***************************** DEBUG *********************************/
-/******************************************************************************/
-
-/**
- * Log all kinds of info about the queueing status of a peer.
- *
- * @param p Peer whose queue to show.
- * @param level Error level to use for logging.
- */
-static void
-queue_debug (const struct CadetPeer *p, enum GNUNET_ErrorType level)
-{
- struct GNUNET_TIME_Relative core_wait_time;
- struct CadetPeerQueue *q;
- int do_log;
-
- do_log = GNUNET_get_log_call_status (level & (~GNUNET_ERROR_TYPE_BULK),
- "cadet-p2p",
- __FILE__, __FUNCTION__, __LINE__);
- if (0 == do_log)
- return;
-
- LOG2 (level, "QQQ Message queue towards %s\n", GCP_2s (p));
- LOG2 (level, "QQQ queue length: %u\n", p->queue_n);
- LOG2 (level, "QQQ core tmt rdy: %p\n", p->core_transmit);
- if (NULL != p->core_transmit)
- {
- core_wait_time = GNUNET_TIME_absolute_get_duration (p->tmt_time);
- LOG2 (level, "QQQ core called %s ago\n",
- GNUNET_STRINGS_relative_time_to_string (core_wait_time, GNUNET_NO));
- }
- for (q = p->queue_head; NULL != q; q = q->next)
- {
- LOG2 (level, "QQQ - %s %s on %s\n",
- GC_m2s (q->type), GC_f2s (q->fwd), GCC_2s (q->c));
- LOG2 (level, "QQQ payload %s, %u\n",
- GC_m2s (q->payload_type), q->payload_id);
- LOG2 (level, "QQQ size: %u bytes\n", q->size);
- }
-
- LOG2 (level, "QQQ End queue towards %s\n", GCP_2s (p));
-}
-
-
-/**
- * Log all kinds of info about a peer.
- *
- * @param peer Peer.
- */
-void
-GCP_debug (const struct CadetPeer *p, enum GNUNET_ErrorType level)
-{
- struct CadetPeerPath *path;
- unsigned int conns;
- int do_log;
-
- do_log = GNUNET_get_log_call_status (level & (~GNUNET_ERROR_TYPE_BULK),
- "cadet-p2p",
- __FILE__, __FUNCTION__, __LINE__);
- if (0 == do_log)
- return;
-
- if (NULL == p)
- {
- LOG2 (level, "PPP DEBUG PEER NULL\n");
- return;
- }
-
- LOG2 (level, "PPP DEBUG PEER %s\n", GCP_2s (p));
- LOG2 (level, "PPP last contact %s\n",
- GNUNET_STRINGS_absolute_time_to_string (p->last_contact));
- for (path = p->path_head; NULL != path; path = path->next)
- {
- char *s;
-
- s = path_2s (path);
- LOG2 (level, "PPP path: %s\n", s);
- GNUNET_free (s);
- }
-
- LOG2 (level, "PPP core transmit handle %p\n", p->core_transmit);
- LOG2 (level, "PPP DHT GET handle %p\n", p->search_h);
- conns = 0;
- if (NULL != p->connections)
- conns += GNUNET_CONTAINER_multihashmap_size (p->connections);
- LOG2 (level, "PPP # connections over link to peer: %u\n", conns);
- queue_debug (p, level);
- LOG2 (level, "PPP DEBUG END\n");
-}
-
-
/******************************************************************************/
/***************************** CORE HELPERS *********************************/
/******************************************************************************/
*/
static int
notify_broken (void *cls,
- const struct GNUNET_HashCode *key,
+ const struct GNUNET_ShortHashCode *key,
void *value)
{
- struct CadetPeer *peer = cls;
- struct CadetConnection *c = value;
+ struct CadetPeer *peer = cls;
+ struct CadetConnection *c = value;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Notifying %s due to %s disconnect\n",
- GCC_2s (c), GCP_2s (peer));
- GCC_neighbor_disconnected (c, peer);
- return GNUNET_YES;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Notifying %s due to %s disconnect\n",
+ GCC_2s (c), GCP_2s (peer));
+ GCC_neighbor_disconnected (c, peer);
+ return GNUNET_YES;
}
static struct CadetPeerPath *
pop_direct_path (struct CadetPeer *peer)
{
- struct CadetPeerPath *iter;
+ struct CadetPeerPath *iter;
- for (iter = peer->path_head; NULL != iter; iter = iter->next)
- {
- if (2 >= iter->length)
+ for (iter = peer->path_head; NULL != iter; iter = iter->next)
{
- GNUNET_CONTAINER_DLL_remove (peer->path_head,
- peer->path_tail,
- iter);
- return iter;
+ if (2 >= iter->length)
+ {
+ GNUNET_CONTAINER_DLL_remove (peer->path_head,
+ peer->path_tail,
+ iter);
+ return iter;
+ }
}
- }
- return NULL;
+ return NULL;
}
+/**
+ * Call the continuation after a message has been sent or dropped.
+ *
+ * This funcion removes the message from the queue.
+ *
+ * @param q Queue handle.
+ * @param sent #GNUNET_YES if was sent to CORE, #GNUNET_NO if dropped.
+ */
+static void
+call_peer_cont (struct CadetPeerQueue *q, int sent);
+
/******************************************************************************/
/***************************** CORE CALLBACKS *********************************/
/**
* Method called whenever a given peer connects.
*
- * @param cls closure
- * @param peer peer identity this notification is about
+ * @param cls Core closure (unused).
+ * @param peer Peer identity this notification is about
+ * @param mq Message Queue to this peer.
+ *
+ * @return Internal closure for handlers (CadetPeer struct).
*/
-static void
-core_connect (void *cls,
- const struct GNUNET_PeerIdentity *peer)
-{
- struct CadetPeer *neighbor;
- struct CadetPeerPath *path;
- char own_id[16];
-
- GCC_check_connections ();
- GNUNET_snprintf (own_id,
- sizeof (own_id),
- "%s",
- GNUNET_i2s (&my_full_id));
- neighbor = GCP_get (peer, GNUNET_YES);
- if (myid == neighbor->id)
- {
- LOG (GNUNET_ERROR_TYPE_INFO,
- "CONNECTED %s (self)\n",
- own_id);
- path = path_new (1);
- }
- else
- {
- LOG (GNUNET_ERROR_TYPE_INFO,
- "CONNECTED %s <= %s\n",
- own_id,
- GNUNET_i2s (peer));
- path = path_new (2);
- path->peers[1] = neighbor->id;
- GNUNET_PEER_change_rc (neighbor->id, 1);
- }
- path->peers[0] = myid;
- GNUNET_PEER_change_rc (myid, 1);
- GCP_add_path (neighbor, path, GNUNET_YES);
+static void *
+core_connect_handler (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ struct GNUNET_MQ_Handle *mq)
+{
+ struct CadetPeer *neighbor;
+ struct CadetPeerPath *path;
+ char own_id[16];
- GNUNET_assert (NULL == neighbor->connections);
- neighbor->connections = GNUNET_CONTAINER_multihashmap_create (16, GNUNET_NO);
- GNUNET_assert (NULL != neighbor->connections);
+ GCC_check_connections ();
+ GNUNET_snprintf (own_id,
+ sizeof (own_id),
+ "%s",
+ GNUNET_i2s (&my_full_id));
+
+ /* Save a path to the neighbor */
+ neighbor = GCP_get (peer, GNUNET_YES);
+ if (myid == neighbor->id)
+ {
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "CONNECTED %s (self)\n",
+ own_id);
+ path = path_new (1);
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "CONNECTED %s <= %s\n",
+ own_id,
+ GNUNET_i2s (peer));
+ path = path_new (2);
+ path->peers[1] = neighbor->id;
+ GNUNET_PEER_change_rc (neighbor->id, 1);
+ GNUNET_assert (NULL == neighbor->core_mq);
+ neighbor->core_mq = mq;
+ }
+ path->peers[0] = myid;
+ GNUNET_PEER_change_rc (myid, 1);
+ GCP_add_path (neighbor, path, GNUNET_YES);
+
+ /* Create the connections hashmap */
+ GNUNET_assert (NULL == neighbor->connections);
+ neighbor->connections = GNUNET_CONTAINER_multishortmap_create (16,
+ GNUNET_YES);
+ GNUNET_STATISTICS_update (stats,
+ "# peers",
+ 1,
+ GNUNET_NO);
- GNUNET_STATISTICS_update (stats,
- "# peers",
- 1,
- GNUNET_NO);
+ if ( (NULL != GCP_get_tunnel (neighbor)) &&
+ (0 > GNUNET_CRYPTO_cmp_peer_identity (&my_full_id, peer)) )
+ {
+ GCP_connect (neighbor);
+ }
+ GCC_check_connections ();
- if ( (NULL != GCP_get_tunnel (neighbor)) &&
- (0 > GNUNET_CRYPTO_cmp_peer_identity (&my_full_id, peer)) )
- GCP_connect (neighbor);
- GCC_check_connections ();
+ return neighbor;
}
/**
* Method called whenever a peer disconnects.
*
- * @param cls closure
- * @param peer peer identity this notification is about
+ * @param cls Core closure (unused).
+ * @param peer Peer identity this notification is about.
+ * @param internal_cls Internal closure (CadetPeer struct).
*/
static void
-core_disconnect (void *cls,
- const struct GNUNET_PeerIdentity *peer)
-{
- struct CadetPeer *p;
- struct CadetPeerPath *direct_path;
- char own_id[16];
-
- GCC_check_connections ();
- strncpy (own_id, GNUNET_i2s (&my_full_id), 16);
- own_id[15] = '\0';
- p = GNUNET_CONTAINER_multipeermap_get (peers, peer);
- if (NULL == p)
- {
- GNUNET_break (GNUNET_YES == in_shutdown);
- return;
- }
- if (myid == p->id)
- LOG (GNUNET_ERROR_TYPE_INFO,
- "DISCONNECTED %s (self)\n",
- own_id);
- else
- LOG (GNUNET_ERROR_TYPE_INFO,
- "DISCONNECTED %s <= %s\n",
- own_id, GNUNET_i2s (peer));
- direct_path = pop_direct_path (p);
- GNUNET_CONTAINER_multihashmap_iterate (p->connections,
- ¬ify_broken,
- p);
- GNUNET_CONTAINER_multihashmap_destroy (p->connections);
- p->connections = NULL;
- if (NULL != p->core_transmit)
- {
- GNUNET_CORE_notify_transmit_ready_cancel (p->core_transmit);
- p->core_transmit = NULL;
- p->tmt_time.abs_value_us = 0;
- }
- GNUNET_STATISTICS_update (stats,
- "# peers",
- -1,
- GNUNET_NO);
- path_destroy (direct_path);
- GCC_check_connections ();
-}
-
-
-/**
- * Functions to handle messages from core
- */
-static struct GNUNET_CORE_MessageHandler core_handlers[] = {
- {&GCC_handle_create, GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE, 0},
- {&GCC_handle_confirm, GNUNET_MESSAGE_TYPE_CADET_CONNECTION_ACK,
- sizeof (struct GNUNET_CADET_ConnectionACK)},
- {&GCC_handle_broken, GNUNET_MESSAGE_TYPE_CADET_CONNECTION_BROKEN,
- sizeof (struct GNUNET_CADET_ConnectionBroken)},
- {&GCC_handle_destroy, GNUNET_MESSAGE_TYPE_CADET_CONNECTION_DESTROY,
- sizeof (struct GNUNET_CADET_ConnectionDestroy)},
- {&GCC_handle_ack, GNUNET_MESSAGE_TYPE_CADET_ACK,
- sizeof (struct GNUNET_CADET_ACK)},
- {&GCC_handle_poll, GNUNET_MESSAGE_TYPE_CADET_POLL,
- sizeof (struct GNUNET_CADET_Poll)},
- {&GCC_handle_kx, GNUNET_MESSAGE_TYPE_CADET_KX, 0},
- {&GCC_handle_encrypted, GNUNET_MESSAGE_TYPE_CADET_ENCRYPTED, 0},
- {&GCC_handle_encrypted, GNUNET_MESSAGE_TYPE_CADET_AX, 0},
- {NULL, 0, 0}
-};
+core_disconnect_handler (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ void *internal_cls)
+{
+ struct CadetPeer *p = internal_cls;
+ struct CadetPeerPath *direct_path;
+ char own_id[16];
+
+ GCC_check_connections ();
+ strncpy (own_id, GNUNET_i2s (&my_full_id), 16);
+ own_id[15] = '\0';
+ if (myid == p->id)
+ {
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "DISCONNECTED %s (self)\n",
+ own_id);
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "DISCONNECTED %s <= %s\n",
+ own_id, GNUNET_i2s (peer));
+ p->core_mq = NULL;
+ }
+ direct_path = pop_direct_path (p);
+ if (NULL != p->connections)
+ {
+ GNUNET_CONTAINER_multishortmap_iterate (p->connections,
+ ¬ify_broken,
+ p);
+ GNUNET_CONTAINER_multishortmap_destroy (p->connections);
+ p->connections = NULL;
+ }
+ GNUNET_STATISTICS_update (stats,
+ "# peers",
+ -1,
+ GNUNET_NO);
+ path_destroy (direct_path);
+ GCC_check_connections ();
+}
+/******************************************************************************/
+/******************************************************************************/
+/******************************************************************************/
+/******************************************************************************/
+/******************************************************************************/
+
/**
- * To be called on core init/fail.
+ * Check if the create_connection message has the appropriate size.
*
- * @param cls Closure (config)
- * @param identity the public identity of this peer
+ * @param cls Closure (unused).
+ * @param msg Message to check.
+ *
+ * @return #GNUNET_YES if size is correct, #GNUNET_NO otherwise.
*/
-static void
-core_init (void *cls,
- const struct GNUNET_PeerIdentity *identity)
+static int
+check_create (void *cls, const struct GNUNET_CADET_ConnectionCreateMessage *msg)
{
- const struct GNUNET_CONFIGURATION_Handle *c = cls;
- static int i = 0;
+ uint16_t size;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Core init\n");
- if (0 != memcmp (identity, &my_full_id, sizeof (my_full_id)))
- {
- LOG (GNUNET_ERROR_TYPE_ERROR, _("Wrong CORE service\n"));
- LOG (GNUNET_ERROR_TYPE_ERROR, " core id %s\n", GNUNET_i2s (identity));
- LOG (GNUNET_ERROR_TYPE_ERROR, " my id %s\n", GNUNET_i2s (&my_full_id));
- GNUNET_CORE_disconnect (core_handle);
- core_handle = GNUNET_CORE_connect (c, /* Main configuration */
- NULL, /* Closure passed to CADET functions */
- &core_init, /* Call core_init once connected */
- &core_connect, /* Handle connects */
- &core_disconnect, /* remove peers on disconnects */
- NULL, /* Don't notify about all incoming messages */
- GNUNET_NO, /* For header only in notification */
- NULL, /* Don't notify about all outbound messages */
- GNUNET_NO, /* For header-only out notification */
- core_handlers); /* Register these handlers */
- if (10 < i++)
- GNUNET_assert (0);
- }
- GML_start ();
+ size = ntohs (msg->header.size);
+ if (size < sizeof (*msg))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+/**
+ * Handle for #GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE
+ *
+ * @param cls Closure (CadetPeer for neighbor that sent the message).
+ * @param msg Message itself.
+ */
+static void
+handle_create (void *cls, const struct GNUNET_CADET_ConnectionCreateMessage *msg)
+{
+ struct CadetPeer *peer = cls;
+ GCC_handle_create (peer, msg);
}
/**
- * Core callback to write a pre-constructed data packet to core buffer
- *
- * @param cls Closure (CadetTransmissionDescriptor with data in "data" member).
- * @param size Number of bytes available in buf.
- * @param buf Where the to write the message.
- *
- * @return number of bytes written to buf
- */
-static size_t
-send_core_data_raw (void *cls, size_t size, void *buf)
+ * Handle for #GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE_ACK
+ *
+ * @param cls Closure (CadetPeer for neighbor that sent the message).
+ * @param msg Message itself.
+ */
+static void
+handle_confirm (void *cls, const struct GNUNET_CADET_ConnectionCreateAckMessage *msg)
{
- struct GNUNET_MessageHeader *msg = cls;
- size_t total_size;
+ struct CadetPeer *peer = cls;
+ GCC_handle_confirm (peer, msg);
+}
- GNUNET_assert (NULL != msg);
- total_size = ntohs (msg->size);
- if (total_size > size)
- {
- GNUNET_break (0);
- return 0;
- }
- memcpy (buf, msg, total_size);
- GNUNET_free (cls);
- return total_size;
+/**
+ * Handle for #GNUNET_MESSAGE_TYPE_CADET_CONNECTION_BROKEN
+ *
+ * @param cls Closure (CadetPeer for neighbor that sent the message).
+ * @param msg Message itself.
+ */
+static void
+handle_broken (void *cls, const struct GNUNET_CADET_ConnectionBrokenMessage *msg)
+{
+ struct CadetPeer *peer = cls;
+ GCC_handle_broken (peer, msg);
}
/**
- * Function to send a create connection message to a peer.
+ * Handle for #GNUNET_MESSAGE_TYPE_CADET_CONNECTION_DESTROY
*
- * @param c Connection to create.
- * @param size number of bytes available in buf
- * @param buf where the callee should write the message
- * @return number of bytes written to buf
+ * @param cls Closure (CadetPeer for neighbor that sent the message).
+ * @param msg Message itself.
*/
-static size_t
-send_core_connection_create (struct CadetConnection *c, size_t size, void *buf)
+static void
+handle_destroy (void *cls, const struct GNUNET_CADET_ConnectionDestroyMessage *msg)
{
- struct GNUNET_CADET_ConnectionCreate *msg;
- struct GNUNET_PeerIdentity *peer_ptr;
- const struct CadetPeerPath *p = GCC_get_path (c);
- size_t size_needed;
- int i;
+ struct CadetPeer *peer = cls;
+ GCC_handle_destroy (peer, msg);
+}
- if (NULL == p)
- return 0;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending CONNECTION CREATE...\n");
- size_needed =
- sizeof (struct GNUNET_CADET_ConnectionCreate) +
- p->length * sizeof (struct GNUNET_PeerIdentity);
+/**
+ * Handle for #GNUNET_MESSAGE_TYPE_CADET_CONNECTION_HOP_BY_HOP_ENCRYPTED_ACK
+ *
+ * @param cls Closure (CadetPeer for neighbor that sent the message).
+ * @param msg Message itself.
+ */
+static void
+handle_ack (void *cls, const struct GNUNET_CADET_ConnectionEncryptedAckMessage *msg)
+{
+ struct CadetPeer *peer = cls;
+ GCC_handle_ack (peer, msg);
+}
- if (size < size_needed || NULL == buf)
- {
- GNUNET_break (0);
- return 0;
- }
- msg = (struct GNUNET_CADET_ConnectionCreate *) buf;
- msg->header.size = htons (size_needed);
- msg->header.type = htons (GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE);
- msg->cid = *GCC_get_id (c);
- peer_ptr = (struct GNUNET_PeerIdentity *) &msg[1];
- for (i = 0; i < p->length; i++)
- {
- GNUNET_PEER_resolve (p->peers[i], peer_ptr++);
- }
+/**
+ * Handle for #GNUNET_MESSAGE_TYPE_CADET_TUNNEL_ENCRYPTED_POLL
+ *
+ * @param cls Closure (CadetPeer for neighbor that sent the message).
+ * @param msg Message itself.
+ */
+static void
+handle_poll (void *cls, const struct GNUNET_CADET_ConnectionHopByHopPollMessage *msg)
+{
+ struct CadetPeer *peer = cls;
+ GCC_handle_poll (peer, msg);
+}
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "CONNECTION CREATE (%u bytes long) sent!\n",
- size_needed);
- return size_needed;
+
+/**
+ * Handle for #GNUNET_MESSAGE_TYPE_CADET_TUNNEL_KX
+ *
+ * @param cls Closure (CadetPeer for neighbor that sent the message).
+ * @param msg Message itself.
+ */
+static void
+handle_kx (void *cls, const struct GNUNET_CADET_TunnelKeyExchangeMessage *msg)
+{
+ struct CadetPeer *peer = cls;
+ GCC_handle_kx (peer, msg);
}
/**
- * Creates a path ack message in buf and frees all unused resources.
+ * Check if the encrypted message has the appropriate size.
*
- * @param c Connection to send an ACK on.
- * @param size number of bytes available in buf
- * @param buf where the callee should write the message
+ * @param cls Closure (unused).
+ * @param msg Message to check.
*
- * @return number of bytes written to buf
+ * @return #GNUNET_YES if size is correct, #GNUNET_NO otherwise.
*/
-static size_t
-send_core_connection_ack (struct CadetConnection *c, size_t size, void *buf)
+static int
+check_encrypted (void *cls, const struct GNUNET_CADET_TunnelEncryptedMessage *msg)
{
- struct GNUNET_CADET_ConnectionACK *msg = buf;
+ uint16_t size;
+ uint16_t minimum_size;
+
+ size = ntohs (msg->header.size);
+ minimum_size = sizeof (struct GNUNET_CADET_TunnelEncryptedMessage)
+ + sizeof (struct GNUNET_MessageHeader);
+
+ if (size < minimum_size)
+ {
+ GNUNET_break_op (0);
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+/**
+ * Handle for #GNUNET_MESSAGE_TYPE_CADET_TUNNEL_ENCRYPTED.
+ *
+ * @param cls Closure (CadetPeer for neighbor that sent the message).
+ * @param msg Message itself.
+ */
+static void
+handle_encrypted (void *cls, const struct GNUNET_CADET_TunnelEncryptedMessage *msg)
+{
+ struct CadetPeer *peer = cls;
+ GCC_handle_encrypted (peer, msg);
+}
+
+
+/**
+ * To be called on core init/fail.
+ *
+ * @param cls Closure (config)
+ * @param identity The public identity of this peer.
+ */
+static void
+core_init_notify (void *cls,
+ const struct GNUNET_PeerIdentity *identity);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending CONNECTION ACK...\n");
- if (sizeof (struct GNUNET_CADET_ConnectionACK) > size)
- {
- GNUNET_break (0);
- return 0;
- }
- msg->header.size = htons (sizeof (struct GNUNET_CADET_ConnectionACK));
- msg->header.type = htons (GNUNET_MESSAGE_TYPE_CADET_CONNECTION_ACK);
- msg->cid = *GCC_get_id (c);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "CONNECTION ACK sent!\n");
- return sizeof (struct GNUNET_CADET_ConnectionACK);
+static void
+connect_to_core (const struct GNUNET_CONFIGURATION_Handle *c)
+{
+ struct GNUNET_MQ_MessageHandler core_handlers[] = {
+ GNUNET_MQ_hd_var_size (create,
+ GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE,
+ struct GNUNET_CADET_ConnectionCreateMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (confirm,
+ GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE_ACK,
+ struct GNUNET_CADET_ConnectionCreateAckMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (broken,
+ GNUNET_MESSAGE_TYPE_CADET_CONNECTION_BROKEN,
+ struct GNUNET_CADET_ConnectionBrokenMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (destroy,
+ GNUNET_MESSAGE_TYPE_CADET_CONNECTION_DESTROY,
+ struct GNUNET_CADET_ConnectionDestroyMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (ack,
+ GNUNET_MESSAGE_TYPE_CADET_CONNECTION_HOP_BY_HOP_ENCRYPTED_ACK,
+ struct GNUNET_CADET_ConnectionEncryptedAckMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (poll,
+ GNUNET_MESSAGE_TYPE_CADET_TUNNEL_ENCRYPTED_POLL,
+ struct GNUNET_CADET_ConnectionHopByHopPollMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (kx,
+ GNUNET_MESSAGE_TYPE_CADET_TUNNEL_KX,
+ struct GNUNET_CADET_TunnelKeyExchangeMessage,
+ NULL),
+ GNUNET_MQ_hd_var_size (encrypted,
+ GNUNET_MESSAGE_TYPE_CADET_TUNNEL_ENCRYPTED,
+ struct GNUNET_CADET_TunnelEncryptedMessage,
+ NULL),
+ GNUNET_MQ_handler_end ()
+ };
+ core_handle = GNUNET_CORE_connect (c, NULL,
+ &core_init_notify,
+ &core_connect_handler,
+ &core_disconnect_handler,
+ core_handlers);
+}
+
+/******************************************************************************/
+/******************************************************************************/
+/******************************************************************************/
+/******************************************************************************/
+/******************************************************************************/
+
+/**
+ * To be called on core init/fail.
+ *
+ * @param cls Closure (config)
+ * @param identity The public identity of this peer.
+ */
+static void
+core_init_notify (void *cls,
+ const struct GNUNET_PeerIdentity *core_identity)
+{
+ const struct GNUNET_CONFIGURATION_Handle *c = cls;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Core init\n");
+ if (0 != memcmp (core_identity, &my_full_id, sizeof (my_full_id)))
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR, _("Wrong CORE service\n"));
+ LOG (GNUNET_ERROR_TYPE_ERROR, " core id %s\n", GNUNET_i2s (core_identity));
+ LOG (GNUNET_ERROR_TYPE_ERROR, " my id %s\n", GNUNET_i2s (&my_full_id));
+ GNUNET_CORE_disconnect (core_handle);
+ connect_to_core (c);
+ return;
+ }
+ GML_start ();
}
* @param q Queued message
*
* @return CORE priority to use.
+ *
+ * FIXME make static
+ * FIXME use when sending
*/
-static enum GNUNET_CORE_Priority
+enum GNUNET_CORE_Priority
get_priority (struct CadetPeerQueue *q)
{
- enum GNUNET_CORE_Priority low;
- enum GNUNET_CORE_Priority high;
+ enum GNUNET_CORE_Priority low;
+ enum GNUNET_CORE_Priority high;
- if (NULL == q)
- {
- GNUNET_break (0);
- return GNUNET_CORE_PRIO_BACKGROUND;
- }
+ if (NULL == q)
+ {
+ GNUNET_break (0);
+ return GNUNET_CORE_PRIO_BACKGROUND;
+ }
- /* Relayed traffic has lower priority, our own traffic has higher */
- if (NULL == q->c || GNUNET_NO == GCC_is_origin (q->c, q->fwd))
- {
- low = GNUNET_CORE_PRIO_BEST_EFFORT;
- high = GNUNET_CORE_PRIO_URGENT;
- }
- else
- {
- low = GNUNET_CORE_PRIO_URGENT;
- high = GNUNET_CORE_PRIO_CRITICAL_CONTROL;
- }
+ /* Relayed traffic has lower priority, our own traffic has higher */
+ if (NULL == q->c || GNUNET_NO == GCC_is_origin (q->c, q->c_fwd))
+ {
+ low = GNUNET_CORE_PRIO_BEST_EFFORT;
+ high = GNUNET_CORE_PRIO_URGENT;
+ }
+ else
+ {
+ low = GNUNET_CORE_PRIO_URGENT;
+ high = GNUNET_CORE_PRIO_CRITICAL_CONTROL;
+ }
- /* Bulky payload has lower priority, control traffic has higher. */
- if (GNUNET_MESSAGE_TYPE_CADET_ENCRYPTED == q->type
- || GNUNET_MESSAGE_TYPE_CADET_AX == q->type)
- return low;
- else
+ /* Bulky payload has lower priority, control traffic has higher. */
+ if (GNUNET_MESSAGE_TYPE_CADET_TUNNEL_ENCRYPTED == q->type)
+ return low;
return high;
}
+/**
+ * Cancel all messages queued to CORE MQ towards this peer.
+ *
+ * @param peer Peer towards which to cancel all messages.
+ */
+static void
+cancel_queued_messages (struct CadetPeer *peer)
+{
+ while (NULL != peer->q_head)
+ {
+ struct CadetPeerQueue *q;
+
+ q = peer->q_head;
+ call_peer_cont (q, GNUNET_NO);
+ GNUNET_free (q);
+ }
+}
+
+
/**
* Destroy the peer_info and free any allocated resources linked to it
*
static int
peer_destroy (struct CadetPeer *peer)
{
- struct GNUNET_PeerIdentity id;
- struct CadetPeerPath *p;
- struct CadetPeerPath *nextp;
+ struct GNUNET_PeerIdentity id;
+ struct CadetPeerPath *p;
+ struct CadetPeerPath *nextp;
- GNUNET_PEER_resolve (peer->id, &id);
- GNUNET_PEER_change_rc (peer->id, -1);
+ GNUNET_PEER_resolve (peer->id, &id);
+ GNUNET_PEER_change_rc (peer->id, -1);
- LOG (GNUNET_ERROR_TYPE_INFO,
- "destroying peer %s\n",
- GNUNET_i2s (&id));
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "destroying peer %s\n",
+ GNUNET_i2s (&id));
- if (GNUNET_YES !=
- GNUNET_CONTAINER_multipeermap_remove (peers, &id, peer))
- {
- GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_WARNING, " peer not in peermap!!\n");
- }
- GCP_stop_search (peer);
- p = peer->path_head;
- while (NULL != p)
- {
- nextp = p->next;
- GNUNET_CONTAINER_DLL_remove (peer->path_head,
- peer->path_tail,
- p);
- path_destroy (p);
- p = nextp;
- }
- if (NULL != peer->tunnel)
- GCT_destroy_empty (peer->tunnel);
- if (NULL != peer->connections)
- {
- GNUNET_assert (0 == GNUNET_CONTAINER_multihashmap_size (peer->connections));
- GNUNET_CONTAINER_multihashmap_destroy (peer->connections);
- }
- if (NULL != peer->hello_offer)
- {
- GNUNET_TRANSPORT_offer_hello_cancel (peer->hello_offer);
- peer->hello_offer = NULL;
- }
- if (NULL != peer->connectivity_suggestion)
- {
- GNUNET_ATS_connectivity_suggest_cancel (peer->connectivity_suggestion);
- peer->connectivity_suggestion = NULL;
- }
- while (NULL != peer->queue_head)
- {
- GCP_queue_destroy (peer->queue_head, GNUNET_YES, GNUNET_NO, 0);
- }
- if (NULL != peer->core_transmit)
- {
- GNUNET_break (0); /* GCP_queue_destroy should've cancelled it! */
- GNUNET_CORE_notify_transmit_ready_cancel (peer->core_transmit);
- peer->core_transmit = NULL;
- }
+ if (GNUNET_YES !=
+ GNUNET_CONTAINER_multipeermap_remove (peers, &id, peer))
+ {
+ GNUNET_break (0);
+ LOG (GNUNET_ERROR_TYPE_WARNING, " peer not in peermap!!\n");
+ }
+ GCP_stop_search (peer);
+ p = peer->path_head;
+ while (NULL != p)
+ {
+ nextp = p->next;
+ GNUNET_CONTAINER_DLL_remove (peer->path_head,
+ peer->path_tail,
+ p);
+ path_destroy (p);
+ p = nextp;
+ }
+ if (NULL != peer->tunnel)
+ GCT_destroy_empty (peer->tunnel);
+ if (NULL != peer->connections)
+ {
+ GNUNET_assert (0 == GNUNET_CONTAINER_multishortmap_size (peer->connections));
+ GNUNET_CONTAINER_multishortmap_destroy (peer->connections);
+ peer->connections = NULL;
+ }
+ if (NULL != peer->hello_offer)
+ {
+ GNUNET_TRANSPORT_offer_hello_cancel (peer->hello_offer);
+ peer->hello_offer = NULL;
+ }
+ if (NULL != peer->connectivity_suggestion)
+ {
+ GNUNET_ATS_connectivity_suggest_cancel (peer->connectivity_suggestion);
+ peer->connectivity_suggestion = NULL;
+ }
+ cancel_queued_messages (peer);
- GNUNET_free_non_null (peer->hello);
- GNUNET_free (peer);
- return GNUNET_OK;
+ GNUNET_free_non_null (peer->hello);
+ GNUNET_free (peer);
+ return GNUNET_OK;
}
const struct GNUNET_PeerIdentity *key,
void *value)
{
- struct CadetPeer *p = value;
- struct CadetTunnel *t = p->tunnel;
- LOG (GNUNET_ERROR_TYPE_DEBUG, " shutting down %s\n", GCP_2s (p));
- if (NULL != t)
- GCT_destroy (t);
- p->tunnel = NULL;
- peer_destroy (p);
- return GNUNET_YES;
-}
+ struct CadetPeer *p = value;
+ struct CadetTunnel *t = p->tunnel;
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " shutting down %s\n", GCP_2s (p));
+ if (NULL != t)
+ GCT_destroy (t);
+ p->tunnel = NULL;
+ peer_destroy (p);
+ return GNUNET_YES;
+}
/**
static int
is_searching (const struct CadetPeer *peer)
{
- return ( (NULL == peer->search_h) &&
- (NULL == peer->search_delayed) ) ?
- GNUNET_NO : GNUNET_YES;
+ return ( (NULL == peer->search_h) &&
+ (NULL == peer->search_delayed) ) ?
+ GNUNET_NO : GNUNET_YES;
}
static void
delayed_search (void *cls)
{
- struct CadetPeer *peer = cls;
+ struct CadetPeer *peer = cls;
- peer->search_delayed = NULL;
- GCC_check_connections ();
- GCP_start_search (peer);
- GCC_check_connections ();
+ peer->search_delayed = NULL;
+ GCC_check_connections ();
+ GCP_start_search (peer);
+ GCC_check_connections ();
}
static int
peer_is_used (struct CadetPeer *peer)
{
- struct CadetPeerPath *p;
+ struct CadetPeerPath *p;
- if (NULL != peer->tunnel)
- return GNUNET_YES;
+ if (NULL != peer->tunnel)
+ return GNUNET_YES;
- for (p = peer->path_head; NULL != p; p = p->next)
- {
- if (p->length < 3)
- return GNUNET_YES;
- }
+ for (p = peer->path_head; NULL != p; p = p->next)
+ {
+ if (p->length < 3)
+ return GNUNET_YES;
+ }
return GNUNET_NO;
}
const struct GNUNET_PeerIdentity *key,
void *value)
{
- struct CadetPeer *p = value;
- struct GNUNET_TIME_Absolute *abs = cls;
+ struct CadetPeer *p = value;
+ struct GNUNET_TIME_Absolute *abs = cls;
- /* Don't count active peers */
- if (GNUNET_YES == peer_is_used (p))
- return GNUNET_YES;
+ /* Don't count active peers */
+ if (GNUNET_YES == peer_is_used (p))
+ return GNUNET_YES;
- if (abs->abs_value_us < p->last_contact.abs_value_us)
- abs->abs_value_us = p->last_contact.abs_value_us;
+ if (abs->abs_value_us < p->last_contact.abs_value_us)
+ abs->abs_value_us = p->last_contact.abs_value_us;
- return GNUNET_YES;
+ return GNUNET_YES;
}
const struct GNUNET_PeerIdentity *key,
void *value)
{
- struct CadetPeer *p = value;
- struct GNUNET_TIME_Absolute *abs = cls;
+ struct CadetPeer *p = value;
+ struct GNUNET_TIME_Absolute *abs = cls;
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "peer %s timeout\n", GNUNET_i2s (key));
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "peer %s timeout\n", GNUNET_i2s (key));
- if (p->last_contact.abs_value_us == abs->abs_value_us &&
- GNUNET_NO == peer_is_used (p))
- {
- peer_destroy (p);
- return GNUNET_NO;
- }
+ if (p->last_contact.abs_value_us == abs->abs_value_us &&
+ GNUNET_NO == peer_is_used (p))
+ {
+ peer_destroy (p);
+ return GNUNET_NO;
+ }
return GNUNET_YES;
}
static void
peer_delete_oldest (void)
{
- struct GNUNET_TIME_Absolute abs;
+ struct GNUNET_TIME_Absolute abs;
- abs = GNUNET_TIME_UNIT_FOREVER_ABS;
+ abs = GNUNET_TIME_UNIT_FOREVER_ABS;
- GNUNET_CONTAINER_multipeermap_iterate (peers,
- &peer_get_oldest,
- &abs);
- GNUNET_CONTAINER_multipeermap_iterate (peers,
- &peer_timeout,
- &abs);
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ &peer_get_oldest,
+ &abs);
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ &peer_timeout,
+ &abs);
}
static struct CadetPeerPath *
peer_get_best_path (const struct CadetPeer *peer)
{
- struct CadetPeerPath *best_p;
- struct CadetPeerPath *p;
- unsigned int best_cost;
- unsigned int cost;
+ struct CadetPeerPath *best_p;
+ struct CadetPeerPath *p;
+ unsigned int best_cost;
+ unsigned int cost;
- best_cost = UINT_MAX;
- best_p = NULL;
- for (p = peer->path_head; NULL != p; p = p->next)
- {
- if (GNUNET_NO == path_is_valid (p))
- continue; /* Don't use invalid paths. */
- if (GNUNET_YES == GCT_is_path_used (peer->tunnel, p))
- continue; /* If path is already in use, skip it. */
-
- if ((cost = GCT_get_path_cost (peer->tunnel, p)) < best_cost)
+ best_cost = UINT_MAX;
+ best_p = NULL;
+ for (p = peer->path_head; NULL != p; p = p->next)
{
- best_cost = cost;
- best_p = p;
- }
- }
- return best_p;
-}
-
-
-/**
- * Is this queue element sendable?
- *
- * - All management traffic is always sendable.
- * - For payload traffic, check the connection flow control.
- *
- * @param q Queue element to inspect.
- * @return #GNUNET_YES if it is sendable, #GNUNET_NO otherwise.
- */
-static int
-queue_is_sendable (struct CadetPeerQueue *q)
-{
- /* Is PID-independent? */
- switch (q->type)
- {
- case GNUNET_MESSAGE_TYPE_CADET_ACK:
- case GNUNET_MESSAGE_TYPE_CADET_POLL:
- case GNUNET_MESSAGE_TYPE_CADET_KX:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_ACK:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_DESTROY:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_BROKEN:
- return GNUNET_YES;
-
- case GNUNET_MESSAGE_TYPE_CADET_ENCRYPTED:
- case GNUNET_MESSAGE_TYPE_CADET_AX:
- break;
-
- default:
- GNUNET_break (0);
- }
+ if (GNUNET_NO == path_is_valid (p))
+ continue; /* Don't use invalid paths. */
+ if (GNUNET_YES == GCT_is_path_used (peer->tunnel, p))
+ continue; /* If path is already in use, skip it. */
- return GCC_is_sendable (q->c, q->fwd);
-}
-
-
-/**
- * Get first sendable message.
- *
- * @param peer The destination peer.
- *
- * @return First transmittable message, if any. Otherwise, NULL.
- */
-static struct CadetPeerQueue *
-peer_get_first_message (const struct CadetPeer *peer)
-{
- struct CadetPeerQueue *q;
-
- for (q = peer->queue_head; NULL != q; q = q->next)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Checking q:%p on c:%s\n", q, GCC_2s (q->c));
- if (queue_is_sendable (q))
- return q;
- }
-
- return NULL;
+ if ((cost = GCT_get_path_cost (peer->tunnel, p)) < best_cost)
+ {
+ best_cost = cost;
+ best_p = p;
+ }
+ }
+ return best_p;
}
static void
search_handler (void *cls, const struct CadetPeerPath *path)
{
- struct CadetPeer *peer = cls;
- unsigned int connection_count;
+ struct CadetPeer *peer = cls;
+ unsigned int connection_count;
- GCC_check_connections ();
- GCP_add_path_to_all (path, GNUNET_NO);
-
- /* Count connections */
- connection_count = GCT_count_connections (peer->tunnel);
-
- /* If we already have our minimum (or more) connections, it's enough */
- if (CONNECTIONS_PER_TUNNEL <= connection_count)
- {
GCC_check_connections ();
- return;
- }
+ GCP_add_path_to_all (path, GNUNET_NO);
- if (CADET_TUNNEL_SEARCHING == GCT_get_cstate (peer->tunnel))
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " ... connect!\n");
- GCP_connect (peer);
- }
- GCC_check_connections ();
-}
+ /* Count connections */
+ connection_count = GCT_count_connections (peer->tunnel);
+ /* If we already have our minimum (or more) connections, it's enough */
+ if (CONNECTIONS_PER_TUNNEL <= connection_count)
+ {
+ GCC_check_connections ();
+ return;
+ }
-/**
- * Adjust core requested size to accomodate an ACK.
- *
- * @param message_size Requested size.
- *
- * @return Size enough to fit @c message_size and an ACK.
- */
-static size_t
-get_core_size (size_t message_size)
-{
- return message_size + sizeof (struct GNUNET_CADET_ACK);
+ if (CADET_TUNNEL_SEARCHING == GCT_get_cstate (peer->tunnel))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " ... connect!\n");
+ GCP_connect (peer);
+ }
+ GCC_check_connections ();
}
+
/**
* Test if a message type is connection management traffic
* or regular payload traffic.
static int
is_connection_management (uint16_t type)
{
- return type == GNUNET_MESSAGE_TYPE_CADET_ACK ||
- type == GNUNET_MESSAGE_TYPE_CADET_POLL;
-}
-
-
-/**
- * Fill a core buffer with the appropriate data for the queued message.
- *
- * @param queue Queue element for the message.
- * @param buf Core buffer to fill.
- * @param size Size remaining in @c buf.
- * @param[out] pid In case its an encrypted payload, set payload.
- *
- * @return Bytes written to @c buf.
- */
-static size_t
-fill_buf (struct CadetPeerQueue *queue, void *buf, size_t size, uint32_t *pid)
-{
- struct CadetConnection *c = queue->c;
- size_t msg_size;
-
- switch (queue->type)
- {
- case GNUNET_MESSAGE_TYPE_CADET_ENCRYPTED:
- *pid = GCC_get_pid (queue->c, queue->fwd);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " otr payload ID %u\n", *pid);
- msg_size = send_core_data_raw (queue->cls, size, buf);
- ((struct GNUNET_CADET_Encrypted *) buf)->pid = htonl (*pid);
- break;
- case GNUNET_MESSAGE_TYPE_CADET_AX:
- *pid = GCC_get_pid (queue->c, queue->fwd);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " ax payload ID %u\n", *pid);
- msg_size = send_core_data_raw (queue->cls, size, buf);
- ((struct GNUNET_CADET_AX *) buf)->pid = htonl (*pid);
- break;
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_DESTROY:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_BROKEN:
- case GNUNET_MESSAGE_TYPE_CADET_KX:
- case GNUNET_MESSAGE_TYPE_CADET_ACK:
- case GNUNET_MESSAGE_TYPE_CADET_POLL:
- LOG (GNUNET_ERROR_TYPE_DEBUG, " raw %s\n", GC_m2s (queue->type));
- msg_size = send_core_data_raw (queue->cls, size, buf);
- break;
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE:
- LOG (GNUNET_ERROR_TYPE_DEBUG, " path create\n");
- if (GCC_is_origin (c, GNUNET_YES))
- msg_size = send_core_connection_create (c, size, buf);
- else
- msg_size = send_core_data_raw (queue->cls, size, buf);
- break;
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_ACK:
- LOG (GNUNET_ERROR_TYPE_DEBUG, " path ack\n");
- if (GCC_is_origin (c, GNUNET_NO) ||
- GCC_is_origin (c, GNUNET_YES))
- {
- msg_size = send_core_connection_ack (c, size, buf);
- }
- else
- {
- msg_size = send_core_data_raw (queue->cls, size, buf);
- }
- break;
- case GNUNET_MESSAGE_TYPE_CADET_DATA:
- case GNUNET_MESSAGE_TYPE_CADET_CHANNEL_CREATE:
- case GNUNET_MESSAGE_TYPE_CADET_CHANNEL_DESTROY:
- /* This should be encapsulted */
- msg_size = 0;
- GNUNET_assert (0);
- break;
- default:
- GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_WARNING, " type unknown: %u\n", queue->type);
- msg_size = 0;
- }
-
- GNUNET_assert (size >= msg_size);
-
- return msg_size;
+ return type == GNUNET_MESSAGE_TYPE_CADET_CONNECTION_HOP_BY_HOP_ENCRYPTED_ACK ||
+ type == GNUNET_MESSAGE_TYPE_CADET_TUNNEL_ENCRYPTED_POLL;
}
* Debug function should NEVER return true in production code, useful to
* simulate losses for testcases.
*
- * @param q Queue handle with info about the message.
- *
* @return #GNUNET_YES or #GNUNET_NO with the decision to drop.
*/
static int
-should_I_drop (struct CadetPeerQueue *q)
-{
- if (0 == drop_percent)
- return GNUNET_NO;
-
- if (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 101) < drop_percent)
- return GNUNET_YES;
-
- return GNUNET_NO;
-}
-
-
-/**
- * Core callback to write a queued packet to core buffer
- *
- * @param cls Closure (peer info).
- * @param size Number of bytes available in buf.
- * @param buf Where the to write the message.
- *
- * @return number of bytes written to buf
- */
-static size_t
-queue_send (void *cls, size_t size, void *buf)
+should_I_drop (void)
{
- struct CadetPeer *peer = cls;
- struct CadetConnection *c;
- struct CadetPeerQueue *queue;
- struct GNUNET_TIME_Relative core_wait_time;
- const char *wait_s;
- const struct GNUNET_PeerIdentity *dst_id;
- size_t msg_size;
- size_t total_size;
- size_t rest;
- char *dst;
- uint32_t pid;
+ if (0 == drop_percent)
+ return GNUNET_NO;
- GCC_check_connections ();
- LOG (GNUNET_ERROR_TYPE_DEBUG, "\n");
- LOG (GNUNET_ERROR_TYPE_DEBUG, "\n");
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Queue send towards %s (max %u)\n",
- GCP_2s (peer), size);
+ if (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 101) < drop_percent)
+ return GNUNET_YES;
- /* Sanity checking */
- if (NULL == buf || 0 == size)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " not allowed/\n");
- if (GNUNET_NO == in_shutdown)
- {
- queue = peer_get_first_message (peer);
- if (NULL == queue)
- {
- peer->core_transmit = NULL;
- peer->tmt_time.abs_value_us = 0;
- GCC_check_connections ();
- return 0;
- }
- dst_id = GNUNET_PEER_resolve2 (peer->id);
- peer->core_transmit =
- GNUNET_CORE_notify_transmit_ready (core_handle,
- GNUNET_NO, get_priority (queue),
- GNUNET_TIME_UNIT_FOREVER_REL,
- dst_id,
- get_core_size (queue->size),
- &queue_send,
- peer);
- peer->tmt_time = GNUNET_TIME_absolute_get ();
- }
- else
- {
- peer->core_transmit = NULL;
- peer->tmt_time.abs_value_us = 0;
- }
- GCC_check_connections ();
- return 0;
- }
-
- /* Init */
- rest = size;
- total_size = 0;
- dst = (char *) buf;
- pid = 0;
- peer->core_transmit = NULL;
- queue = peer_get_first_message (peer);
- if (NULL == queue)
- {
- GNUNET_break (0); /* Core tmt_rdy should've been canceled */
- peer->tmt_time.abs_value_us = 0;
- return 0;
- }
- core_wait_time = GNUNET_TIME_absolute_get_duration (peer->tmt_time);
- wait_s = GNUNET_STRINGS_relative_time_to_string (core_wait_time, GNUNET_YES);
- if (core_wait_time.rel_value_us >= 1000000)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING,
- " %s: core wait time %s (> 1 second) for %u bytes\n",
- GCP_2s (peer), wait_s, queue->size);
- }
- peer->tmt_time.abs_value_us = 0;
-
- /* Copy all possible messages to the core buffer */
- while (NULL != queue && rest >= queue->size)
- {
- c = queue->c;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, " on conn %s %s\n",
- GCC_2s (c), GC_f2s(queue->fwd));
- LOG (GNUNET_ERROR_TYPE_DEBUG, " size %u ok (%u/%u)\n",
- queue->size, total_size, size);
-
- msg_size = fill_buf (queue, (void *) dst, size, &pid);
-
- if (should_I_drop (queue))
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "DD %s (%s %u) on conn %s %s\n",
- GC_m2s (queue->type), GC_m2s (queue->payload_type),
- queue->payload_id, GCC_2s (c), GC_f2s (queue->fwd));
- msg_size = 0;
- }
- else
- {
- LOG (GNUNET_ERROR_TYPE_INFO,
- ">>> %s (%s %4u) on conn %s (%p) %s [%5u], after %s\n",
- GC_m2s (queue->type), GC_m2s (queue->payload_type),
- queue->payload_id, GCC_2s (c), c,
- GC_f2s (queue->fwd), msg_size, wait_s);
- }
- total_size += msg_size;
- rest -= msg_size;
- dst = &dst[msg_size];
- msg_size = 0;
-
- /* Free queue, but cls was freed by send_core_* in fill_buf. */
- (void) GCP_queue_destroy (queue, GNUNET_NO, GNUNET_YES, pid);
-
- /* Next! */
- queue = peer_get_first_message (peer);
- }
-
- /* If more data in queue, send next */
- if (NULL != queue)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " more data! (%u)\n", queue->size);
- if (NULL == peer->core_transmit)
- {
- dst_id = GNUNET_PEER_resolve2 (peer->id);
- peer->core_transmit =
- GNUNET_CORE_notify_transmit_ready (core_handle,
- GNUNET_NO, get_priority (queue),
- GNUNET_TIME_UNIT_FOREVER_REL,
- dst_id,
- get_core_size (queue->size),
- &queue_send,
- peer);
- peer->tmt_time = GNUNET_TIME_absolute_get ();
- queue->start_waiting = GNUNET_TIME_absolute_get ();
- }
- else
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "* tmt rdy called somewhere else\n");
- }
-// GCC_start_poll (); FIXME needed?
- }
- else
- {
-// GCC_stop_poll(); FIXME needed?
- }
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, " return %d\n", total_size);
- queue_debug (peer, GNUNET_ERROR_TYPE_DEBUG);
- GCC_check_connections ();
- return total_size;
+ return GNUNET_NO;
}
/******************************** API ***********************************/
/******************************************************************************/
-
/**
- * Free a transmission that was already queued with all resources
- * associated to the request.
+ * Call the continuation after a message has been sent or dropped.
*
- * If connection was marked to be destroyed, and this was the last queued
- * message on it, the connection will be free'd as a result.
+ * This funcion removes the message from the queue.
*
- * @param queue Queue handler to cancel.
- * @param clear_cls Is it necessary to free associated cls?
- * @param sent Was it really sent? (Could have been canceled)
- * @param pid PID, if relevant (was sent and was a payload message).
- *
- * @return #GNUNET_YES if connection was destroyed as a result,
- * #GNUNET_NO otherwise.
+ * @param q Queue handle.
+ * @param sent #GNUNET_YES if was sent to CORE, #GNUNET_NO if dropped.
*/
-int
-GCP_queue_destroy (struct CadetPeerQueue *queue,
- int clear_cls,
- int sent,
- uint32_t pid)
-{
- struct CadetPeer *peer;
- int connection_destroyed;
-
- GCC_check_connections ();
- peer = queue->peer;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "queue destroy %s\n", GC_m2s (queue->type));
- if (GNUNET_YES == clear_cls)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " free cls\n");
- switch (queue->type)
+static void
+call_peer_cont (struct CadetPeerQueue *q, int sent)
+{
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " core mq just sent %s\n", GC_m2s (q->type));
+ if (NULL != q->cont)
{
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_DESTROY:
- LOG (GNUNET_ERROR_TYPE_INFO, "destroying a DESTROY message\n");
- /* fall through */
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_ACK:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_BROKEN:
- case GNUNET_MESSAGE_TYPE_CADET_KX:
- case GNUNET_MESSAGE_TYPE_CADET_ENCRYPTED:
- case GNUNET_MESSAGE_TYPE_CADET_AX:
- case GNUNET_MESSAGE_TYPE_CADET_ACK:
- case GNUNET_MESSAGE_TYPE_CADET_POLL:
- GNUNET_free_non_null (queue->cls);
- break;
-
- default:
- GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_ERROR, " type %s unknown!\n",
- GC_m2s (queue->type));
+ struct GNUNET_TIME_Relative wait_time;
+
+ wait_time = GNUNET_TIME_absolute_get_duration (q->queue_timestamp);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ " calling callback on %s after %s\n",
+ GCC_2s (q->c),
+ GNUNET_STRINGS_relative_time_to_string (wait_time, GNUNET_NO));
+ q->cont (q->cont_cls,
+ q->c, q->c_fwd, sent,
+ q->type,
+ q->payload_type,
+ q->payload_id,
+ q->size, wait_time);
+ q->cont = NULL;
}
- }
- GNUNET_CONTAINER_DLL_remove (peer->queue_head, peer->queue_tail, queue);
-
- if (!is_connection_management (queue->type))
- {
- peer->queue_n--;
- }
-
- if (NULL != queue->cont)
- {
- struct GNUNET_TIME_Relative wait_time;
-
- wait_time = GNUNET_TIME_absolute_get_duration (queue->start_waiting);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " calling callback, time elapsed %s\n",
- GNUNET_STRINGS_relative_time_to_string (wait_time, GNUNET_NO));
- connection_destroyed = queue->cont (queue->cont_cls,
- queue->c, sent, queue->type, pid,
- queue->fwd, queue->size, wait_time);
- }
- else
- {
- connection_destroyed = GNUNET_NO;
- }
-
- if (NULL == peer_get_first_message (peer) && NULL != peer->core_transmit)
- {
- GNUNET_CORE_notify_transmit_ready_cancel (peer->core_transmit);
- peer->core_transmit = NULL;
- peer->tmt_time.abs_value_us = 0;
- }
-
- GNUNET_free (queue);
- GCC_check_connections ();
- return connection_destroyed;
-}
-
-
-/**
- * @brief Queue and pass message to core when possible.
- *
- * @param peer Peer towards which to queue the message.
- * @param cls Closure (@c type dependant). It will be used by queue_send to
- * build the message to be sent if not already prebuilt.
- * @param type Type of the message.
- * @param payload_type Type of the message's payload
- * 0 if the message is a retransmission (unknown payload).
- * UINT16_MAX if the message does not have payload.
- * @param payload_id ID of the payload (MID, ACK #, etc)
- * @param size Size of the message.
- * @param c Connection this message belongs to (can be NULL).
- * @param fwd Is this a message going root->dest? (FWD ACK are NOT FWD!)
- * @param cont Continuation to be called once CORE has taken the message.
- * @param cont_cls Closure for @c cont.
- *
- * @return Handle to cancel the message before it is sent. Once cont is called
- * message has been sent and therefore the handle is no longer valid.
- */
-struct CadetPeerQueue *
-GCP_queue_add (struct CadetPeer *peer,
- void *cls,
- uint16_t type,
- uint16_t payload_type,
- uint32_t payload_id,
- size_t size,
- struct CadetConnection *c,
- int fwd,
- GCP_sent cont,
- void *cont_cls)
-{
- struct CadetPeerQueue *q;
- int priority;
- int call_core;
-
- GCC_check_connections ();
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "que %s (%s %4u) on conn %s (%p) %s towards %s (size %u)\n",
- GC_m2s (type), GC_m2s (payload_type), payload_id,
- GCC_2s (c), c, GC_f2s (fwd), GCP_2s (peer), size);
-
- if (NULL == peer->connections)
- {
- /* We are not connected to this peer, ignore request. */
- LOG (GNUNET_ERROR_TYPE_INFO, "%s not a neighbor\n", GCP_2s (peer));
- GNUNET_STATISTICS_update (stats, "# messages dropped due to wrong hop", 1,
- GNUNET_NO);
- return NULL;
- }
-
- priority = 0;
- if (is_connection_management (type))
- {
- priority = 100;
- }
- LOG (GNUNET_ERROR_TYPE_DEBUG, "priority %d\n", priority);
-
- call_core = (NULL == c || GNUNET_MESSAGE_TYPE_CADET_KX == type) ?
- GNUNET_YES : GCC_is_sendable (c, fwd);
- q = GNUNET_new (struct CadetPeerQueue);
- q->cls = cls;
- q->type = type;
- q->payload_type = payload_type;
- q->payload_id = payload_id;
- q->size = size;
- q->peer = peer;
- q->c = c;
- q->fwd = fwd;
- q->cont = cont;
- q->cont_cls = cont_cls;
- if (100 > priority)
- {
- GNUNET_CONTAINER_DLL_insert_tail (peer->queue_head, peer->queue_tail, q);
- peer->queue_n++;
- }
- else
- {
- GNUNET_CONTAINER_DLL_insert (peer->queue_head, peer->queue_tail, q);
- call_core = GNUNET_YES;
- }
-
- q->start_waiting = GNUNET_TIME_absolute_get ();
- if (NULL == peer->core_transmit && GNUNET_YES == call_core)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "calling core tmt rdy towards %s for %u bytes\n",
- GCP_2s (peer), size);
- peer->core_transmit =
- GNUNET_CORE_notify_transmit_ready (core_handle,
- GNUNET_NO, get_priority (q),
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_PEER_resolve2 (peer->id),
- get_core_size (size),
- &queue_send, peer);
- peer->tmt_time = GNUNET_TIME_absolute_get ();
- }
- else if (GNUNET_NO == call_core)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "core tmt rdy towards %s not needed\n",
- GCP_2s (peer));
-
- }
- else
- {
- struct GNUNET_TIME_Relative elapsed;
- elapsed = GNUNET_TIME_absolute_get_duration (peer->tmt_time);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "core tmt rdy towards %s already called %s\n",
- GCP_2s (peer),
- GNUNET_STRINGS_relative_time_to_string (elapsed, GNUNET_NO));
-
- }
- queue_debug (peer, GNUNET_ERROR_TYPE_DEBUG);
- GCC_check_connections ();
- return q;
+ GNUNET_CONTAINER_DLL_remove (q->peer->q_head, q->peer->q_tail, q);
}
/**
- * Cancel all queued messages to a peer that belong to a certain connection.
+ * Function called by MQ when a message is sent to CORE.
*
- * @param peer Peer towards whom to cancel.
- * @param c Connection whose queued messages to cancel. Might be destroyed by
- * the sent continuation call.
+ * @param cls Closure (queue handle).
*/
-void
-GCP_queue_cancel (struct CadetPeer *peer,
- struct CadetConnection *c)
+static void
+mq_sent (void *cls)
{
- struct CadetPeerQueue *q;
- struct CadetPeerQueue *next;
- struct CadetPeerQueue *prev;
- int connection_destroyed;
+ struct CadetPeerQueue *q = cls;
- GCC_check_connections ();
- connection_destroyed = GNUNET_NO;
- for (q = peer->queue_head; NULL != q; q = next)
- {
- prev = q->prev;
- if (q->c == c)
+ if (GNUNET_NO == q->management_traffic)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "GMP queue cancel %s\n",
- GC_m2s (q->type));
- GNUNET_assert (GNUNET_NO == connection_destroyed);
- if (GNUNET_MESSAGE_TYPE_CADET_CONNECTION_DESTROY == q->type)
- {
- q->c = NULL;
- }
- else
- {
- connection_destroyed = GCP_queue_destroy (q, GNUNET_YES, GNUNET_NO, 0);
- }
-
- /* Get next from prev, q->next might be already freed:
- * queue destroy -> callback -> GCC_destroy -> cancel_queues -> here
- */
- if (NULL == prev)
- next = peer->queue_head;
- else
- next = prev->next;
+ q->peer->queue_n--;
}
- else
- {
- next = q->next;
- }
- }
-
- if ( (NULL == peer->queue_head) &&
- (NULL != peer->core_transmit) )
- {
- GNUNET_CORE_notify_transmit_ready_cancel (peer->core_transmit);
- peer->core_transmit = NULL;
- peer->tmt_time.abs_value_us = 0;
- }
- GCC_check_connections ();
+ call_peer_cont (q, GNUNET_YES);
+ GNUNET_free (q);
}
/**
- * Get the first transmittable message for a connection.
+ * Finish the drop operation.
*
- * @param peer Neighboring peer.
- * @param c Connection.
- *
- * @return First transmittable message.
+ * @param cls queue entry to finish drop for
*/
-static struct CadetPeerQueue *
-connection_get_first_message (struct CadetPeer *peer, struct CadetConnection *c)
+static void
+drop_cb (void *cls)
{
- struct CadetPeerQueue *q;
+ struct CadetPeerQueue *q = cls;
- for (q = peer->queue_head; NULL != q; q = q->next)
- {
- if (q->c != c)
- continue;
- if (queue_is_sendable (q))
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " sendable!!\n");
- return q;
- }
- LOG (GNUNET_ERROR_TYPE_DEBUG, " not sendable\n");
- }
-
- return NULL;
+ GNUNET_MQ_discard (q->env);
+ call_peer_cont (q, GNUNET_YES);
+ GNUNET_free (q);
}
/**
- * Get the first message for a connection and unqueue it.
- *
- * Only tunnel (or higher) level messages are unqueued. Connection specific
- * messages are silently destroyed upon encounter.
+ * @brief Send a message to another peer (using CORE).
*
- * @param peer Neighboring peer.
- * @param c Connection.
- * @param destroyed[in/out] Was the connection destroyed (prev/as a result)?.
- * Can NOT be NULL.
+ * @param peer Peer towards which to queue the message.
+ * @param message Message to send.
+ * @param payload_type Type of the message's payload, for debug messages.
+ * 0 if the message is a retransmission (unknown payload).
+ * UINT16_MAX if the message does not have payload.
+ * @param payload_id ID of the payload (MID, ACK #, etc)
+ * @param c Connection this message belongs to (can be NULL).
+ * @param fwd Is this a message going root->dest? (FWD ACK are NOT FWD!)
+ * @param cont Continuation to be called once CORE has sent the message.
+ * @param cont_cls Closure for @c cont.
*
- * @return First message for this connection.
+ * @return A handle to the message in the queue or NULL (if dropped).
*/
-struct GNUNET_MessageHeader *
-GCP_connection_pop (struct CadetPeer *peer,
- struct CadetConnection *c,
- int *destroyed)
-{
- struct CadetPeerQueue *q;
- struct CadetPeerQueue *next;
- struct GNUNET_MessageHeader *msg;
- int dest;
+struct CadetPeerQueue *
+GCP_send (struct CadetPeer *peer,
+ const struct GNUNET_MessageHeader *message,
+ uint16_t payload_type,
+ struct CadetEncryptedMessageIdentifier payload_id,
+ struct CadetConnection *c,
+ int fwd,
+ GCP_sent cont,
+ void *cont_cls)
+{
+ struct CadetPeerQueue *q;
+ uint16_t type;
+ uint16_t size;
- GCC_check_connections ();
- GNUNET_assert (NULL != destroyed);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "connection_pop on conn %p\n", c);
- for (q = peer->queue_head; NULL != q; q = next)
- {
- next = q->next;
- if (q->c != c)
- continue;
- LOG (GNUNET_ERROR_TYPE_DEBUG, " - queued: %s (%s %u), cont: %p\n",
- GC_m2s (q->type), GC_m2s (q->payload_type), q->payload_id,
- q->cont);
- switch (q->type)
+ GCC_check_connections ();
+ type = ntohs (message->type);
+ size = ntohs (message->size);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "que %s (%s %4u) on conn %s (%p) %s towards %s (size %u)\n",
+ GC_m2s (type), GC_m2s (payload_type),
+ ntohl (payload_id.pid),
+ GCC_2s (c), c, GC_f2s (fwd), GCP_2s (peer), size);
+
+ if (NULL == peer->connections)
{
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_CREATE:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_ACK:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_DESTROY:
- case GNUNET_MESSAGE_TYPE_CADET_CONNECTION_BROKEN:
- case GNUNET_MESSAGE_TYPE_CADET_ACK:
- case GNUNET_MESSAGE_TYPE_CADET_POLL:
- dest = GCP_queue_destroy (q, GNUNET_YES, GNUNET_NO, 0);
- if (GNUNET_YES == dest)
- {
- GNUNET_break (GNUNET_NO == *destroyed);
- *destroyed = GNUNET_YES;
- }
- continue;
-
- case GNUNET_MESSAGE_TYPE_CADET_KX:
- case GNUNET_MESSAGE_TYPE_CADET_ENCRYPTED:
- case GNUNET_MESSAGE_TYPE_CADET_AX:
- case GNUNET_MESSAGE_TYPE_CADET_AX_KX:
- msg = (struct GNUNET_MessageHeader *) q->cls;
- dest = GCP_queue_destroy (q, GNUNET_NO, GNUNET_NO, 0);
- if (GNUNET_YES == dest)
+ /* We are not connected to this peer, ignore request. */
+ GNUNET_break (0);
+ LOG (GNUNET_ERROR_TYPE_INFO, "%s not a neighbor\n", GCP_2s (peer));
+ GNUNET_STATISTICS_update (stats, "# messages dropped due to wrong hop", 1,
+ GNUNET_NO);
+ return NULL;
+ }
+
+ q = GNUNET_new (struct CadetPeerQueue);
+ q->env = GNUNET_MQ_msg_copy (message);
+ q->peer = peer;
+ q->cont = cont;
+ q->cont_cls = cont_cls;
+ q->queue_timestamp = GNUNET_TIME_absolute_get ();
+ q->management_traffic = is_connection_management (type);
+ q->type = type;
+ q->size = size;
+ q->payload_type = payload_type;
+ q->payload_id = payload_id;
+ q->c = c;
+ q->c_fwd = fwd;
+ GNUNET_MQ_notify_sent (q->env, &mq_sent, q);
+ GNUNET_CONTAINER_DLL_insert (peer->q_head, peer->q_tail, q);
+
+ if (GNUNET_YES == q->management_traffic)
+ {
+ GNUNET_MQ_send (peer->core_mq, q->env); // FIXME implement "_urgent", use
+ }
+ else
+ {
+ if (GNUNET_YES == should_I_drop ())
{
- GNUNET_break (GNUNET_NO == *destroyed);
- *destroyed = GNUNET_YES;
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "DD %s (%s %u) on conn %s %s (random drop for testing)\n",
+ GC_m2s (q->type),
+ GC_m2s (q->payload_type),
+ ntohl (q->payload_id.pid),
+ GCC_2s (c),
+ GC_f2s (q->c_fwd));
+ q->drop_task = GNUNET_SCHEDULER_add_now (&drop_cb,
+ q);
+ return q;
}
- return msg;
-
- default:
- GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Unknown message %s\n", GC_m2s (q->type));
+ GNUNET_MQ_send (peer->core_mq, q->env);
+ peer->queue_n++;
}
- }
- GCC_check_connections ();
- return NULL;
+
+ GCC_check_connections ();
+ return q;
}
/**
- * Unlock a possibly locked queue for a connection.
+ * Cancel sending a message. Message must have been sent with
+ * #GCP_send before. May not be called after the notify sent
+ * callback has been called.
*
- * If there is a message that can be sent on this connection, call core for it.
- * Otherwise (if core transmit is already called or there is no sendable
- * message) do nothing.
+ * It DOES call the continuation given to #GCP_send.
*
- * @param peer Peer who keeps the queue.
- * @param c Connection whose messages to unlock.
+ * @param q Queue handle to cancel
*/
void
-GCP_queue_unlock (struct CadetPeer *peer, struct CadetConnection *c)
+GCP_send_cancel (struct CadetPeerQueue *q)
{
- struct CadetPeerQueue *q;
- size_t size;
-
- GCC_check_connections ();
- if (NULL != peer->core_transmit)
+ if (NULL != q->drop_task)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, " already unlocked!\n");
- return; /* Already unlocked */
+ GNUNET_SCHEDULER_cancel (q->drop_task);
+ q->drop_task = NULL;
+ GNUNET_MQ_discard (q->env);
}
-
- q = connection_get_first_message (peer, c);
- if (NULL == q)
+ else
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, " queue empty!\n");
- return; /* Nothing to transmit */
+ GNUNET_MQ_send_cancel (q->env);
}
-
- size = q->size;
- peer->core_transmit =
- GNUNET_CORE_notify_transmit_ready (core_handle,
- GNUNET_NO, get_priority (q),
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_PEER_resolve2 (peer->id),
- get_core_size (size),
- &queue_send,
- peer);
- peer->tmt_time = GNUNET_TIME_absolute_get ();
- GCC_check_connections ();
+ call_peer_cont (q, GNUNET_NO);
+ GNUNET_free (q);
}
void
GCP_init (const struct GNUNET_CONFIGURATION_Handle *c)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "GCP_init\n");
- in_shutdown = GNUNET_NO;
- peers = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (c, "CADET", "MAX_PEERS",
- &max_peers))
- {
- GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_WARNING,
- "CADET", "MAX_PEERS", "USING DEFAULT");
- max_peers = 1000;
- }
-
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (c, "CADET", "DROP_PERCENT",
- &drop_percent))
- {
- drop_percent = 0;
- }
- else
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "**************************************\n");
- LOG (GNUNET_ERROR_TYPE_WARNING, "Cadet is running with DROP enabled.\n");
- LOG (GNUNET_ERROR_TYPE_WARNING, "This is NOT a good idea!\n");
- LOG (GNUNET_ERROR_TYPE_WARNING, "Remove DROP_PERCENT from config file.\n");
- LOG (GNUNET_ERROR_TYPE_WARNING, "**************************************\n");
- }
- ats_ch = GNUNET_ATS_connectivity_init (c);
- core_handle = GNUNET_CORE_connect (c, /* Main configuration */
- NULL, /* Closure passed to CADET functions */
- &core_init, /* Call core_init once connected */
- &core_connect, /* Handle connects */
- &core_disconnect, /* remove peers on disconnects */
- NULL, /* Don't notify about all incoming messages */
- GNUNET_NO, /* For header only in notification */
- NULL, /* Don't notify about all outbound messages */
- GNUNET_NO, /* For header-only out notification */
- core_handlers); /* Register these handlers */
- if (GNUNET_YES !=
- GNUNET_CONFIGURATION_get_value_yesno (c, "CADET", "DISABLE_TRY_CONNECT"))
- {
- transport_handle = GNUNET_TRANSPORT_connect (c, &my_full_id, NULL, /* cls */
- /* Notify callbacks */
- NULL, NULL, NULL);
- }
- else
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "**************************************\n");
- LOG (GNUNET_ERROR_TYPE_WARNING, "* DISABLE TRYING CONNECT in config *\n");
- LOG (GNUNET_ERROR_TYPE_WARNING, "* Use this only for test purposes. *\n");
- LOG (GNUNET_ERROR_TYPE_WARNING, "**************************************\n");
- transport_handle = NULL;
- }
-
-
-
- if (NULL == core_handle)
- {
- GNUNET_break (0);
- GNUNET_SCHEDULER_shutdown ();
- return;
- }
+ cfg = c;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "GCP_init\n");
+ in_shutdown = GNUNET_NO;
+ peers = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (c, "CADET", "MAX_PEERS",
+ &max_peers))
+ {
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_WARNING,
+ "CADET", "MAX_PEERS", "USING DEFAULT");
+ max_peers = 1000;
+ }
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (c, "CADET", "DROP_PERCENT",
+ &drop_percent))
+ {
+ drop_percent = 0;
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, "**************************************\n");
+ LOG (GNUNET_ERROR_TYPE_WARNING, "Cadet is running with DROP enabled.\n");
+ LOG (GNUNET_ERROR_TYPE_WARNING, "This is NOT a good idea!\n");
+ LOG (GNUNET_ERROR_TYPE_WARNING, "Remove DROP_PERCENT from config file.\n");
+ LOG (GNUNET_ERROR_TYPE_WARNING, "**************************************\n");
+ }
+ ats_ch = GNUNET_ATS_connectivity_init (c);
+ connect_to_core (c);
+ if (NULL == core_handle)
+ {
+ GNUNET_break (0);
+ GNUNET_SCHEDULER_shutdown ();
+ }
}
void
GCP_shutdown (void)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Shutting down peer subsystem\n");
- in_shutdown = GNUNET_YES;
- GNUNET_CONTAINER_multipeermap_iterate (peers,
- &shutdown_peer,
- NULL);
- if (NULL != core_handle)
- {
- GNUNET_CORE_disconnect (core_handle);
- core_handle = NULL;
- }
- if (NULL != transport_handle)
- {
- GNUNET_TRANSPORT_disconnect (transport_handle);
- transport_handle = NULL;
- }
- if (NULL != ats_ch)
- {
- GNUNET_ATS_connectivity_done (ats_ch);
- ats_ch = NULL;
- }
- GNUNET_PEER_change_rc (myid, -1);
- GNUNET_CONTAINER_multipeermap_destroy (peers);
- peers = NULL;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Shutting down peer subsystem\n");
+ in_shutdown = GNUNET_YES;
+ if (NULL != core_handle)
+ {
+ GNUNET_CORE_disconnect (core_handle);
+ core_handle = NULL;
+ }
+ GNUNET_PEER_change_rc (myid, -1);
+ /* With MQ API, CORE calls the disconnect handler for every peer
+ * after calling GNUNET_CORE_disconnect, shutdown must occur *after* that.
+ */
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ &shutdown_peer,
+ NULL);
+ if (NULL != ats_ch)
+ {
+ GNUNET_ATS_connectivity_done (ats_ch);
+ ats_ch = NULL;
+ }
+ GNUNET_CONTAINER_multipeermap_destroy (peers);
+ peers = NULL;
}
struct CadetPeer *
GCP_get (const struct GNUNET_PeerIdentity *peer_id, int create)
{
- struct CadetPeer *peer;
+ struct CadetPeer *peer;
- peer = GNUNET_CONTAINER_multipeermap_get (peers, peer_id);
- if (NULL == peer)
- {
- peer = GNUNET_new (struct CadetPeer);
- if (GNUNET_CONTAINER_multipeermap_size (peers) > max_peers)
+ peer = GNUNET_CONTAINER_multipeermap_get (peers, peer_id);
+ if (NULL == peer)
{
- peer_delete_oldest ();
+ peer = GNUNET_new (struct CadetPeer);
+ if (GNUNET_CONTAINER_multipeermap_size (peers) > max_peers)
+ {
+ peer_delete_oldest ();
+ }
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multipeermap_put (peers,
+ peer_id,
+ peer,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+ peer->id = GNUNET_PEER_intern (peer_id);
}
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multipeermap_put (peers,
- peer_id,
- peer,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- peer->id = GNUNET_PEER_intern (peer_id);
- }
- peer->last_contact = GNUNET_TIME_absolute_get ();
+ peer->last_contact = GNUNET_TIME_absolute_get ();
- return peer;
+ return peer;
}
struct CadetPeer *
GCP_get_short (const GNUNET_PEER_Id peer, int create)
{
- return GCP_get (GNUNET_PEER_resolve2 (peer), create);
+ return GCP_get (GNUNET_PEER_resolve2 (peer), create);
}
static void
hello_offer_done (void *cls)
{
- struct CadetPeer *peer = cls;
+ struct CadetPeer *peer = cls;
- peer->hello_offer = NULL;
+ peer->hello_offer = NULL;
}
void
GCP_connect (struct CadetPeer *peer)
{
- struct CadetTunnel *t;
- struct CadetPeerPath *path;
- struct CadetConnection *c;
- int rerun_search;
+ struct CadetTunnel *t;
+ struct CadetPeerPath *path;
+ struct CadetConnection *c;
+ int rerun_search;
- GCC_check_connections ();
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "peer_connect towards %s\n",
- GCP_2s (peer));
- /* If we have a current hello, try to connect using it. */
- GCP_try_connect (peer);
+ GCC_check_connections ();
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "peer_connect towards %s\n",
+ GCP_2s (peer));
+ /* If we have a current hello, try to connect using it. */
+ GCP_try_connect (peer);
- t = peer->tunnel;
- c = NULL;
- rerun_search = GNUNET_NO;
+ t = peer->tunnel;
+ c = NULL;
+ rerun_search = GNUNET_NO;
- if (NULL != peer->path_head)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " some path exists\n");
- path = peer_get_best_path (peer);
- if (NULL != path)
+ if (NULL != peer->path_head)
{
- char *s;
-
- s = path_2s (path);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " path to use: %s\n", s);
- GNUNET_free (s);
-
- c = GCT_use_path (t, path);
- if (NULL == c)
- {
- /* This case can happen when the path includes a first hop that is
- * not yet known to be connected.
- *
- * This happens quite often during testing when running cadet
- * under valgrind: core connect notifications come very late
- * and the DHT result has already come and created a valid
- * path. In this case, the peer->connections
- * hashmaps will be NULL and tunnel_use_path will not be able
- * to create a connection from that path.
- *
- * Re-running the DHT GET should give core time to callback.
- *
- * GCT_use_path -> GCC_new -> register_neighbors takes care of
- * updating statistics about this issue.
- */
- rerun_search = GNUNET_YES;
- }
- else
- {
- GCC_send_create (c);
- return;
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " some path exists\n");
+ path = peer_get_best_path (peer);
+ if (NULL != path)
+ {
+ char *s;
+
+ s = path_2s (path);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " path to use: %s\n", s);
+ GNUNET_free (s);
+
+ c = GCT_use_path (t, path);
+ if (NULL == c)
+ {
+ /* This case can happen when the path includes a first hop that is
+ * not yet known to be connected.
+ *
+ * This happens quite often during testing when running cadet
+ * under valgrind: core connect notifications come very late
+ * and the DHT result has already come and created a valid
+ * path. In this case, the peer->connections
+ * hashmaps will be NULL and tunnel_use_path will not be able
+ * to create a connection from that path.
+ *
+ * Re-running the DHT GET should give core time to callback.
+ *
+ * GCT_use_path -> GCC_new -> register_neighbors takes care of
+ * updating statistics about this issue.
+ */
+ rerun_search = GNUNET_YES;
+ }
+ else
+ {
+ GCC_send_create (c);
+ return;
+ }
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " but is NULL, all paths are in use\n");
+ }
}
- else
+
+ if (GNUNET_YES == rerun_search)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, " but is NULL, all paths are in use\n");
- }
- }
+ struct GNUNET_TIME_Relative delay;
- if (GNUNET_YES == rerun_search)
- {
- struct GNUNET_TIME_Relative delay;
+ GCP_stop_search (peer);
+ delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 100);
+ peer->search_delayed = GNUNET_SCHEDULER_add_delayed (delay,
+ &delayed_search,
+ peer);
+ GCC_check_connections ();
+ return;
+ }
- GCP_stop_search (peer);
- delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 100);
- peer->search_delayed = GNUNET_SCHEDULER_add_delayed (delay,
- &delayed_search,
- peer);
+ if (GNUNET_NO == is_searching (peer))
+ GCP_start_search (peer);
GCC_check_connections ();
- return;
- }
-
- if (GNUNET_NO == is_searching (peer))
- GCP_start_search (peer);
- GCC_check_connections ();
}
int
GCP_is_neighbor (const struct CadetPeer *peer)
{
- struct CadetPeerPath *path;
+ struct CadetPeerPath *path;
- if (NULL == peer->connections)
- return GNUNET_NO;
+ if (NULL == peer->connections)
+ return GNUNET_NO;
- for (path = peer->path_head; NULL != path; path = path->next)
- {
- if (3 > path->length)
- return GNUNET_YES;
- }
+ for (path = peer->path_head; NULL != path; path = path->next)
+ {
+ if (3 > path->length)
+ return GNUNET_YES;
+ }
- /* Is not a neighbor but connections is not NULL, probably disconnecting */
- GNUNET_break (0);
- return GNUNET_NO;
+ /* Is not a neighbor but connections is not NULL, probably disconnecting */
+ return GNUNET_NO;
}
void
GCP_add_tunnel (struct CadetPeer *peer)
{
- GCC_check_connections ();
- if (NULL != peer->tunnel)
- return;
- peer->tunnel = GCT_new (peer);
- GCC_check_connections ();
+ GCC_check_connections ();
+ if (NULL != peer->tunnel)
+ return;
+ peer->tunnel = GCT_new (peer);
+ GCC_check_connections ();
}
struct CadetConnection *c,
int pred)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "adding connection %s\n",
- GCC_2s (c));
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "to peer %s\n",
- GCP_2s (peer));
- GNUNET_assert (NULL != peer->connections);
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_put (peer->connections,
- GCC_get_h (c),
- c,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Peer %s has now %u connections.\n",
- GCP_2s (peer),
- GNUNET_CONTAINER_multihashmap_size (peer->connections));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "adding connection %s\n",
+ GCC_2s (c));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "to peer %s\n",
+ GCP_2s (peer));
+ GNUNET_assert (NULL != peer->connections);
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multishortmap_put (peer->connections,
+ &GCC_get_id (c)->connection_of_tunnel,
+ c,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer %s has now %u connections.\n",
+ GCP_2s (peer),
+ GNUNET_CONTAINER_multishortmap_size (peer->connections));
}
struct CadetPeerPath *path,
int trusted)
{
- struct CadetPeerPath *aux;
- unsigned int l;
- unsigned int l2;
-
- GCC_check_connections ();
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "adding path [%u] to peer %s\n",
- path->length, GCP_2s (peer));
+ struct CadetPeerPath *aux;
+ unsigned int l;
+ unsigned int l2;
- if (NULL == peer || NULL == path
- || path->peers[path->length - 1] != peer->id)
- {
- GNUNET_break (0);
- path_destroy (path);
- return NULL;
- }
+ GCC_check_connections ();
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "adding path [%u] to peer %s\n",
+ path->length, GCP_2s (peer));
- for (l = 1; l < path->length; l++)
- {
- if (path->peers[l] == myid)
+ if (NULL == peer || NULL == path
+ || path->peers[path->length - 1] != peer->id)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, " shortening path by %u\n", l);
- for (l2 = 0; l2 < path->length - l; l2++)
- {
- path->peers[l2] = path->peers[l + l2];
- }
- path->length -= l;
- l = 1;
- path->peers = GNUNET_realloc (path->peers,
- path->length * sizeof (GNUNET_PEER_Id));
+ GNUNET_break (0);
+ path_destroy (path);
+ return NULL;
}
- }
- LOG (GNUNET_ERROR_TYPE_DEBUG, " final length: %u\n", path->length);
-
- if (2 >= path->length && GNUNET_NO == trusted)
- {
- /* Only allow CORE to tell us about direct paths */
- path_destroy (path);
- return NULL;
- }
+ for (l = 1; l < path->length; l++)
+ {
+ if (path->peers[l] == myid)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " shortening path by %u\n", l);
+ for (l2 = 0; l2 < path->length - l; l2++)
+ {
+ path->peers[l2] = path->peers[l + l2];
+ }
+ path->length -= l;
+ l = 1;
+ path->peers = GNUNET_realloc (path->peers,
+ path->length * sizeof (GNUNET_PEER_Id));
+ }
+ }
- l = path_get_length (path);
- if (0 == l)
- {
- path_destroy (path);
- return NULL;
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " final length: %u\n", path->length);
- GNUNET_assert (peer->id == path->peers[path->length - 1]);
- for (aux = peer->path_head; aux != NULL; aux = aux->next)
- {
- l2 = path_get_length (aux);
- if (l2 > l)
+ if (2 >= path->length && GNUNET_NO == trusted)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, " added\n");
- GNUNET_CONTAINER_DLL_insert_before (peer->path_head,
- peer->path_tail, aux, path);
- goto finish;
+ /* Only allow CORE to tell us about direct paths */
+ path_destroy (path);
+ return NULL;
}
- else
+
+ l = path_get_length (path);
+ if (0 == l)
{
- if (l2 == l && memcmp (path->peers, aux->peers, l) == 0)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " already known\n");
path_destroy (path);
- return aux;
- }
+ return NULL;
}
- }
- GNUNET_CONTAINER_DLL_insert_tail (peer->path_head,
- peer->path_tail,
- path);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " added last\n");
+
+ GNUNET_assert (peer->id == path->peers[path->length - 1]);
+ for (aux = peer->path_head; aux != NULL; aux = aux->next)
+ {
+ l2 = path_get_length (aux);
+ if (l2 > l)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " added\n");
+ GNUNET_CONTAINER_DLL_insert_before (peer->path_head,
+ peer->path_tail, aux, path);
+ goto finish;
+ }
+ else
+ {
+ if (l2 == l && memcmp (path->peers, aux->peers, l) == 0)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " already known\n");
+ path_destroy (path);
+ return aux;
+ }
+ }
+ }
+ GNUNET_CONTAINER_DLL_insert_tail (peer->path_head,
+ peer->path_tail,
+ path);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " added last\n");
finish:
- if (NULL != peer->tunnel
- && CONNECTIONS_PER_TUNNEL > GCT_count_connections (peer->tunnel)
- && 2 < path->length) /* Direct paths are handled by core_connect */
- {
- GCP_connect (peer);
- }
- GCC_check_connections ();
- return path;
+ if (NULL != peer->tunnel
+ && CONNECTIONS_PER_TUNNEL > GCT_count_connections (peer->tunnel)
+ && 2 < path->length) /* Direct paths are handled by core_connect */
+ {
+ GCP_connect (peer);
+ }
+ GCC_check_connections ();
+ return path;
}
struct CadetPeerPath *path,
int trusted)
{
- if (NULL == path)
- return NULL;
- path_invert (path);
- return GCP_add_path (peer, path, trusted);
+ if (NULL == path)
+ return NULL;
+ path_invert (path);
+ return GCP_add_path (peer, path, trusted);
}
void
GCP_add_path_to_all (const struct CadetPeerPath *p, int confirmed)
{
- unsigned int i;
+ unsigned int i;
- /* TODO: invert and add */
- GCC_check_connections ();
- for (i = 0; i < p->length && p->peers[i] != myid; i++) /* skip'em */ ;
- for (i++; i < p->length; i++)
- {
- struct CadetPeer *peer;
- struct CadetPeerPath *copy;
+ /* TODO: invert and add to origin */
+ /* TODO: replace all "GCP_add_path" with this, make the other one static */
+ GCC_check_connections ();
+ for (i = 0; i < p->length && p->peers[i] != myid; i++) /* skip'em */ ;
+ for (i++; i < p->length; i++)
+ {
+ struct CadetPeer *peer;
+ struct CadetPeerPath *copy;
- peer = GCP_get_short (p->peers[i], GNUNET_YES);
- copy = path_duplicate (p);
- copy->length = i + 1;
- GCP_add_path (peer, copy, 3 > p->length ? GNUNET_NO : confirmed);
- }
- GCC_check_connections ();
+ peer = GCP_get_short (p->peers[i], GNUNET_YES);
+ copy = path_duplicate (p);
+ copy->length = i + 1;
+ GCP_add_path (peer, copy, 3 > p->length ? GNUNET_NO : confirmed);
+ }
+ GCC_check_connections ();
}
*/
void
GCP_remove_path (struct CadetPeer *peer,
- struct CadetPeerPath *path)
+ struct CadetPeerPath *path)
{
- struct CadetPeerPath *iter;
- struct CadetPeerPath *next;
+ struct CadetPeerPath *iter;
+ struct CadetPeerPath *next;
- GCC_check_connections ();
- GNUNET_assert (myid == path->peers[0]);
- GNUNET_assert (peer->id == path->peers[path->length - 1]);
+ GCC_check_connections ();
+ GNUNET_assert (myid == path->peers[0]);
+ GNUNET_assert (peer->id == path->peers[path->length - 1]);
- LOG (GNUNET_ERROR_TYPE_INFO,
- "Removing path %p (%u) from %s\n",
- path, path->length, GCP_2s (peer));
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Removing path %p (%u) from %s\n",
+ path, path->length, GCP_2s (peer));
- for (iter = peer->path_head; NULL != iter; iter = next)
- {
- next = iter->next;
- if (0 == path_cmp (path, iter))
+ for (iter = peer->path_head; NULL != iter; iter = next)
{
- GNUNET_CONTAINER_DLL_remove (peer->path_head,
- peer->path_tail,
- iter);
- if (iter != path)
- path_destroy (iter);
+ next = iter->next;
+ if (0 == path_cmp (path, iter))
+ {
+ GNUNET_CONTAINER_DLL_remove (peer->path_head,
+ peer->path_tail,
+ iter);
+ if (iter != path)
+ path_destroy (iter);
+ }
}
- }
- path_destroy (path);
- GCC_check_connections ();
+ path_destroy (path);
+ GCC_check_connections ();
}
{
GNUNET_assert (NULL != peer);
GNUNET_assert (NULL != peer->connections);
- return;
+ return; // ????
GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_contains_value (peer->connections,
- GCC_get_h (c),
- c));
+ GNUNET_CONTAINER_multishortmap_contains_value (peer->connections,
+ &GCC_get_id (c)->connection_of_tunnel,
+ c));
}
GCP_remove_connection (struct CadetPeer *peer,
const struct CadetConnection *c)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Removing connection %s\n",
- GCC_2s (c));
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "from peer %s\n",
- GCP_2s (peer));
- if ( (NULL == peer) ||
- (NULL == peer->connections) )
- return;
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (peer->connections,
- GCC_get_h (c),
- c));
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Peer %s remains with %u connections.\n",
- GCP_2s (peer),
- GNUNET_CONTAINER_multihashmap_size (peer->connections));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Removing connection %s\n",
+ GCC_2s (c));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "from peer %s\n",
+ GCP_2s (peer));
+ if ( (NULL == peer) ||
+ (NULL == peer->connections) )
+ return;
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CONTAINER_multishortmap_remove (peer->connections,
+ &GCC_get_id (c)->connection_of_tunnel,
+ c));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer %s remains with %u connections.\n",
+ GCP_2s (peer),
+ GNUNET_CONTAINER_multishortmap_size (peer->connections));
}
void
GCP_start_search (struct CadetPeer *peer)
{
- const struct GNUNET_PeerIdentity *id;
- struct CadetTunnel *t = peer->tunnel;
+ const struct GNUNET_PeerIdentity *id;
+ struct CadetTunnel *t = peer->tunnel;
- GCC_check_connections ();
- if (NULL != peer->search_h)
- {
- GNUNET_break (0);
- return;
- }
+ GCC_check_connections ();
+ if (NULL != peer->search_h)
+ {
+ GNUNET_break (0);
+ return;
+ }
- if (NULL != peer->search_delayed)
- GCP_stop_search (peer);
+ if (NULL != peer->search_delayed)
+ GCP_stop_search (peer);
- id = GNUNET_PEER_resolve2 (peer->id);
- peer->search_h = GCD_search (id, &search_handler, peer);
+ id = GNUNET_PEER_resolve2 (peer->id);
+ peer->search_h = GCD_search (id, &search_handler, peer);
- if (NULL == t)
- {
- /* Why would we search for a peer with no tunnel towards it? */
- GNUNET_break (0);
- return;
- }
+ if (NULL == t)
+ {
+ /* Why would we search for a peer with no tunnel towards it? */
+ GNUNET_break (0);
+ return;
+ }
- if (CADET_TUNNEL_NEW == GCT_get_cstate (t)
- || 0 == GCT_count_any_connections (t))
- {
- GCT_change_cstate (t, CADET_TUNNEL_SEARCHING);
- }
- GCC_check_connections ();
+ if (CADET_TUNNEL_NEW == GCT_get_cstate (t)
+ || 0 == GCT_count_any_connections (t))
+ {
+ GCT_change_cstate (t, CADET_TUNNEL_SEARCHING);
+ }
+ GCC_check_connections ();
}
void
GCP_stop_search (struct CadetPeer *peer)
{
- GCC_check_connections ();
- if (NULL != peer->search_h)
- {
- GCD_search_stop (peer->search_h);
- peer->search_h = NULL;
- }
- if (NULL != peer->search_delayed)
- {
- GNUNET_SCHEDULER_cancel (peer->search_delayed);
- peer->search_delayed = NULL;
- }
- GCC_check_connections ();
+ GCC_check_connections ();
+ if (NULL != peer->search_h)
+ {
+ GCD_search_stop (peer->search_h);
+ peer->search_h = NULL;
+ }
+ if (NULL != peer->search_delayed)
+ {
+ GNUNET_SCHEDULER_cancel (peer->search_delayed);
+ peer->search_delayed = NULL;
+ }
+ GCC_check_connections ();
}
const struct GNUNET_PeerIdentity *
GCP_get_id (const struct CadetPeer *peer)
{
- return GNUNET_PEER_resolve2 (peer->id);
+ return GNUNET_PEER_resolve2 (peer->id);
}
GNUNET_PEER_Id
GCP_get_short_id (const struct CadetPeer *peer)
{
- return peer->id;
+ return peer->id;
}
void
GCP_set_tunnel (struct CadetPeer *peer, struct CadetTunnel *t)
{
- peer->tunnel = t;
- if (NULL == t && GNUNET_YES == is_searching (peer))
- {
- GCP_stop_search (peer);
- }
+ peer->tunnel = t;
+ if (NULL == t && GNUNET_YES == is_searching (peer))
+ {
+ GCP_stop_search (peer);
+ }
}
struct CadetTunnel *
GCP_get_tunnel (const struct CadetPeer *peer)
{
- if (NULL == peer)
- return NULL;
- return peer->tunnel;
+ if (NULL == peer)
+ return NULL;
+ return peer->tunnel;
}
*/
void
GCP_set_hello (struct CadetPeer *peer,
- const struct GNUNET_HELLO_Message *hello)
+ const struct GNUNET_HELLO_Message *hello)
{
- struct GNUNET_HELLO_Message *old;
- size_t size;
+ struct GNUNET_HELLO_Message *old;
+ size_t size;
- GCC_check_connections ();
- LOG (GNUNET_ERROR_TYPE_DEBUG, "set hello for %s\n", GCP_2s (peer));
- if (NULL == hello)
- return;
+ GCC_check_connections ();
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "set hello for %s\n", GCP_2s (peer));
+ if (NULL == hello)
+ return;
- old = GCP_get_hello (peer);
- if (NULL == old)
- {
- size = GNUNET_HELLO_size (hello);
- peer->hello = GNUNET_malloc (size);
- memcpy (peer->hello, hello, size);
- }
- else
- {
- peer->hello = GNUNET_HELLO_merge (old, hello);
- GNUNET_free (old);
- }
- GCC_check_connections ();
+ old = GCP_get_hello (peer);
+ if (NULL == old)
+ {
+ size = GNUNET_HELLO_size (hello);
+ peer->hello = GNUNET_malloc (size);
+ GNUNET_memcpy (peer->hello, hello, size);
+ }
+ else
+ {
+ peer->hello = GNUNET_HELLO_merge (old, hello);
+ GNUNET_free (old);
+ }
+ GCC_check_connections ();
}
struct GNUNET_HELLO_Message *
GCP_get_hello (struct CadetPeer *peer)
{
- struct GNUNET_TIME_Absolute expiration;
- struct GNUNET_TIME_Relative remaining;
+ struct GNUNET_TIME_Absolute expiration;
+ struct GNUNET_TIME_Relative remaining;
- if (NULL == peer->hello)
- return NULL;
+ if (NULL == peer->hello)
+ return NULL;
- expiration = GNUNET_HELLO_get_last_expiration (peer->hello);
- remaining = GNUNET_TIME_absolute_get_remaining (expiration);
- if (0 == remaining.rel_value_us)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " get - hello expired on %s\n",
- GNUNET_STRINGS_absolute_time_to_string (expiration));
- GNUNET_free (peer->hello);
- peer->hello = NULL;
- }
- return peer->hello;
+ expiration = GNUNET_HELLO_get_last_expiration (peer->hello);
+ remaining = GNUNET_TIME_absolute_get_remaining (expiration);
+ if (0 == remaining.rel_value_us)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " get - hello expired on %s\n",
+ GNUNET_STRINGS_absolute_time_to_string (expiration));
+ GNUNET_free (peer->hello);
+ peer->hello = NULL;
+ }
+ return peer->hello;
}
void
GCP_try_connect (struct CadetPeer *peer)
{
- struct GNUNET_HELLO_Message *hello;
- struct GNUNET_MessageHeader *mh;
+ struct GNUNET_HELLO_Message *hello;
+ struct GNUNET_MessageHeader *mh;
- if (NULL == transport_handle)
- return;
- GCC_check_connections ();
- if (GNUNET_YES == GCP_is_neighbor (peer))
- return;
- hello = GCP_get_hello (peer);
- if (NULL == hello)
- return;
+ if (GNUNET_YES !=
+ GNUNET_CONFIGURATION_get_value_yesno (cfg,
+ "CADET",
+ "DISABLE_TRY_CONNECT"))
+ return;
+ GCC_check_connections ();
+ if (GNUNET_YES == GCP_is_neighbor (peer))
+ return;
+ hello = GCP_get_hello (peer);
+ if (NULL == hello)
+ return;
- mh = GNUNET_HELLO_get_header (hello);
- if (NULL != peer->hello_offer)
- {
- GNUNET_TRANSPORT_offer_hello_cancel (peer->hello_offer);
- peer->hello_offer = NULL;
- }
- peer->hello_offer = GNUNET_TRANSPORT_offer_hello (transport_handle,
- mh,
- &hello_offer_done,
- peer);
- if (NULL == peer->connectivity_suggestion)
- peer->connectivity_suggestion
- = GNUNET_ATS_connectivity_suggest (ats_ch,
- GNUNET_PEER_resolve2 (peer->id),
- 1 /* strength */);
- GCC_check_connections ();
+ mh = GNUNET_HELLO_get_header (hello);
+ if (NULL != peer->hello_offer)
+ {
+ GNUNET_TRANSPORT_offer_hello_cancel (peer->hello_offer);
+ peer->hello_offer = NULL;
+ }
+ peer->hello_offer = GNUNET_TRANSPORT_offer_hello (cfg,
+ mh,
+ &hello_offer_done,
+ peer);
+ if (NULL == peer->connectivity_suggestion)
+ peer->connectivity_suggestion
+ = GNUNET_ATS_connectivity_suggest (ats_ch,
+ GCP_get_id (peer),
+ 1); /* strength */
+ GCC_check_connections ();
}
const struct GNUNET_PeerIdentity *peer1,
const struct GNUNET_PeerIdentity *peer2)
{
- struct CadetPeerPath *iter;
- struct CadetPeerPath *next;
- unsigned int i;
- GNUNET_PEER_Id p1;
- GNUNET_PEER_Id p2;
+ struct CadetPeerPath *iter;
+ struct CadetPeerPath *next;
+ unsigned int i;
+ GNUNET_PEER_Id p1;
+ GNUNET_PEER_Id p2;
- GCC_check_connections ();
- p1 = GNUNET_PEER_search (peer1);
- p2 = GNUNET_PEER_search (peer2);
+ GCC_check_connections ();
+ p1 = GNUNET_PEER_search (peer1);
+ p2 = GNUNET_PEER_search (peer2);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Link %u-%u broken\n", p1, p2);
- if (0 == p1 || 0 == p2)
- {
- /* We don't even know them */
- return;
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Link %u-%u broken\n", p1, p2);
+ if (0 == p1 || 0 == p2)
+ {
+ /* We don't even know them */
+ return;
+ }
- for (iter = peer->path_head; NULL != iter; iter = next)
- {
- next = iter->next;
- for (i = 0; i < iter->length - 1; i++)
+ for (iter = peer->path_head; NULL != iter; iter = next)
{
- if ((iter->peers[i] == p1 && iter->peers[i + 1] == p2)
- || (iter->peers[i] == p2 && iter->peers[i + 1] == p1))
- {
- char *s;
+ next = iter->next;
+ for (i = 0; i < iter->length - 1; i++)
+ {
+ if ((iter->peers[i] == p1 && iter->peers[i + 1] == p2)
+ || (iter->peers[i] == p2 && iter->peers[i + 1] == p1))
+ {
+ char *s;
- s = path_2s (iter);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " - invalidating %s\n", s);
- GNUNET_free (s);
+ s = path_2s (iter);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " - invalidating %s\n", s);
+ GNUNET_free (s);
- path_invalidate (iter);
- }
+ path_invalidate (iter);
+ }
+ }
}
- }
- GCC_check_connections ();
+ GCC_check_connections ();
}
unsigned int
GCP_count_paths (const struct CadetPeer *peer)
{
- struct CadetPeerPath *iter;
- unsigned int i;
+ struct CadetPeerPath *iter;
+ unsigned int i;
- for (iter = peer->path_head, i = 0; NULL != iter; iter = iter->next)
- i++;
+ for (iter = peer->path_head, i = 0; NULL != iter; iter = iter->next)
+ i++;
- return i;
+ return i;
}
GCP_path_iterator callback,
void *cls)
{
- struct CadetPeerPath *iter;
- unsigned int i;
+ struct CadetPeerPath *iter;
+ unsigned int i;
- for (iter = peer->path_head, i = 0; NULL != iter; iter = iter->next)
- {
- i++;
- if (GNUNET_YES != callback (cls, peer, iter))
- break;
- }
+ for (iter = peer->path_head, i = 0; NULL != iter; iter = iter->next)
+ {
+ i++;
+ if (GNUNET_YES != callback (cls, peer, iter))
+ break;
+ }
- return i;
+ return i;
}
GCP_iterate_all (GNUNET_CONTAINER_PeerMapIterator iter,
void *cls)
{
- GCC_check_connections ();
- GNUNET_CONTAINER_multipeermap_iterate (peers,
- iter,
- cls);
- GCC_check_connections ();
+ GCC_check_connections ();
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ iter,
+ cls);
+ GCC_check_connections ();
}
const char *
GCP_2s (const struct CadetPeer *peer)
{
- if (NULL == peer)
- return "(NULL)";
- return GNUNET_i2s (GNUNET_PEER_resolve2 (peer->id));
+ if (NULL == peer)
+ return "(NULL)";
+ return GNUNET_i2s (GNUNET_PEER_resolve2 (peer->id));
}
projects / oweals / gnunet.git / blobdiff