*/
struct GNUNET_PeerIdentity peer;
+ /**
+ * Current window size, set by cadet_notify_window_change()
+ */
+ int32_t window_size;
+
+ /**
+ * Is the connection established?
+ */
+ int8_t is_connected;
+
/**
* Is the remote peer admitted to the group?
* @see enum JoinStatus
};
+static struct Channel *
+cadet_channel_create (struct Group *grp, struct GNUNET_PeerIdentity *peer);
+
+static void
+cadet_channel_destroy (struct Channel *chn);
+
+static void
+client_send_join_decision (struct Member *mem,
+ const struct MulticastJoinDecisionMessageHeader *hdcsn);
+
+
/**
* Task run during shutdown.
*
{
if (c == client)
{
- GNUNET_CONTAINER_multihashmap_remove (replay_req_client, &key, client);
+ GNUNET_CONTAINER_multihashmap_remove (grp_replay_req, &key, client);
GNUNET_CONTAINER_multihashmap_iterator_destroy (it);
return GNUNET_YES;
}
static void
client_send_ack (struct GNUNET_HashCode *pub_key_hash)
{
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Sending message ACK to client.\n");
+
static struct GNUNET_MessageHeader *msg = NULL;
if (NULL == msg)
{
};
-/**
- * CADET is ready to transmit a message.
- */
-size_t
-cadet_notify_transmit_ready (void *cls, size_t buf_size, void *buf)
-{
- if (0 == buf_size)
- {
- /* FIXME: connection closed */
- return 0;
- }
- struct CadetTransmitClosure *tcls = cls;
- struct Channel *chn = tcls->chn;
- uint16_t msg_size = ntohs (tcls->msg->size);
- GNUNET_assert (msg_size <= buf_size);
- GNUNET_memcpy (buf, tcls->msg, msg_size);
- GNUNET_free (tcls);
-
- if (0 == chn->msgs_pending)
- {
- GNUNET_break (0);
- }
- else if (0 == --chn->msgs_pending)
- {
- client_send_ack (&chn->group_pub_hash);
- }
- return msg_size;
-}
-
-
/**
* Send a message to a CADET channel.
*
static void
cadet_send_channel (struct Channel *chn, const struct GNUNET_MessageHeader *msg)
{
- uint16_t msg_size = ntohs (msg->size);
- struct GNUNET_MessageHeader *msg_copy = GNUNET_malloc (msg_size);
- GNUNET_memcpy (msg_copy, msg, msg_size);
-
- struct CadetTransmitClosure *tcls = GNUNET_malloc (sizeof (*tcls));
- tcls->chn = chn;
- tcls->msg = msg_copy;
-
- chn->msgs_pending++;
- chn->tmit_handle
- = GNUNET_CADET_notify_transmit_ready (chn->channel, GNUNET_NO,
- GNUNET_TIME_UNIT_FOREVER_REL,
- msg_size,
- &cadet_notify_transmit_ready,
- tcls);
- GNUNET_assert (NULL != chn->tmit_handle);
-}
+ struct GNUNET_MQ_Envelope *
+ env = GNUNET_MQ_msg_copy (msg);
+ GNUNET_MQ_send (GNUNET_CADET_get_mq (chn->channel), env);
-/**
- * Create new outgoing CADET channel.
- *
- * @param peer
- * Peer to connect to.
- * @param group_pub_key
- * Public key of group the channel belongs to.
- * @param group_pub_hash
- * Hash of @a group_pub_key.
- *
- * @return Channel.
- */
-static struct Channel *
-cadet_channel_create (struct Group *grp, struct GNUNET_PeerIdentity *peer)
-{
- struct Channel *chn = GNUNET_malloc (sizeof (*chn));
- chn->group = grp;
- chn->group_pub_key = grp->pub_key;
- chn->group_pub_hash = grp->pub_key_hash;
- chn->peer = *peer;
- chn->direction = DIR_OUTGOING;
- chn->join_status = JOIN_WAITING;
- chn->channel = GNUNET_CADET_channel_create (cadet, chn, &chn->peer,
- &grp->cadet_port_hash,
- GNUNET_CADET_OPTION_RELIABLE);
- GNUNET_CONTAINER_multihashmap_put (channels_out, &chn->group_pub_hash, chn,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
- return chn;
+ if (0 < chn->window_size)
+ {
+ client_send_ack (&chn->group_pub_hash);
+ }
+ else
+ {
+ chn->msgs_pending++;
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "%p Queuing message. Pending messages: %u\n",
+ chn, chn->msgs_pending);
+ }
}
const struct MulticastJoinDecisionMessageHeader *hdcsn = cls;
struct Channel *chn = channel;
- const struct MulticastJoinDecisionMessage *dcsn =
+ const struct MulticastJoinDecisionMessage *dcsn =
(struct MulticastJoinDecisionMessage *) &hdcsn[1];
if (0 == memcmp (&hdcsn->member_pub_key, &chn->member_pub_key, sizeof (chn->member_pub_key))
/**
- * New incoming CADET channel.
+ * CADET channel connect handler.
+ *
+ * @see GNUNET_CADET_ConnectEventHandler()
*/
static void *
-cadet_notify_channel_new (void *cls,
- struct GNUNET_CADET_Channel *channel,
- const struct GNUNET_PeerIdentity *initiator,
- const struct GNUNET_HashCode *port,
- enum GNUNET_CADET_ChannelOption options)
+cadet_notify_connect (void *cls,
+ struct GNUNET_CADET_Channel *channel,
+ const struct GNUNET_PeerIdentity *source)
+{
+ struct Channel *chn = GNUNET_malloc (sizeof *chn);
+ chn->group = cls;
+ chn->channel = channel;
+ chn->direction = DIR_INCOMING;
+ chn->join_status = JOIN_NOT_ASKED;
+
+ GNUNET_CONTAINER_multihashmap_put (channels_in, &chn->group_pub_hash, chn,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ return chn;
+}
+
+
+/**
+ * CADET window size change handler.
+ *
+ * @see GNUNET_CADET_WindowSizeEventHandler()
+ */
+static void
+cadet_notify_window_change (void *cls,
+ const struct GNUNET_CADET_Channel *channel,
+ int window_size)
{
- return NULL;
+ struct Channel *chn = cls;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "%p Window size changed to %d. Pending messages: %u\n",
+ chn, window_size, chn->msgs_pending);
+
+ chn->is_connected = GNUNET_YES;
+ chn->window_size = (int32_t) window_size;
+
+ for (int i = 0; i < window_size; i++)
+ {
+ if (0 < chn->msgs_pending)
+ {
+ client_send_ack (&chn->group_pub_hash);
+ chn->msgs_pending--;
+ }
+ else
+ {
+ break;
+ }
+ }
}
/**
- * CADET channel is being destroyed.
+ * CADET channel disconnect handler.
+ *
+ * @see GNUNET_CADET_DisconnectEventHandler()
*/
static void
-cadet_notify_channel_end (void *cls,
- const struct GNUNET_CADET_Channel *channel,
- void *ctx)
+cadet_notify_disconnect (void *cls,
+ const struct GNUNET_CADET_Channel *channel)
{
- if (NULL == ctx)
+ if (NULL == cls)
return;
- struct Channel *chn = ctx;
+ struct Channel *chn = cls;
if (NULL != chn->group)
{
if (GNUNET_NO == chn->group->is_origin)
}
}
- while (GNUNET_YES == replay_req_remove_cadet (chn));
+ int ret;
+ do
+ {
+ ret = replay_req_remove_cadet (chn);
+ }
+ while (GNUNET_YES == ret);
+
+ GNUNET_free (chn);
+}
+
+
+static int
+check_cadet_join_request (void *cls,
+ const struct MulticastJoinRequestMessage *req)
+{
+ struct Channel *chn = cls;
+
+ if (NULL == chn
+ || JOIN_NOT_ASKED != chn->join_status)
+ {
+ return GNUNET_SYSERR;
+ }
+
+ uint16_t size = ntohs (req->header.size);
+ if (size < sizeof (*req))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+ if (ntohl (req->purpose.size) != (size
+ - sizeof (req->header)
+ - sizeof (req->reserved)
+ - sizeof (req->signature)))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK !=
+ GNUNET_CRYPTO_ecdsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_REQUEST,
+ &req->purpose, &req->signature,
+ &req->member_pub_key))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Incoming join request message from CADET.
+ */
+static void
+handle_cadet_join_request (void *cls,
+ const struct MulticastJoinRequestMessage *req)
+{
+ struct Channel *chn = cls;
+ GNUNET_CADET_receive_done (chn->channel);
+
+ struct GNUNET_HashCode group_pub_hash;
+ GNUNET_CRYPTO_hash (&req->group_pub_key, sizeof (req->group_pub_key), &group_pub_hash);
+ chn->group_pub_key = req->group_pub_key;
+ chn->group_pub_hash = group_pub_hash;
+ chn->member_pub_key = req->member_pub_key;
+ chn->peer = req->peer;
+ chn->join_status = JOIN_WAITING;
+
+ client_send_all (&group_pub_hash, &req->header);
+}
+
+
+static int
+check_cadet_join_decision (void *cls,
+ const struct MulticastJoinDecisionMessageHeader *hdcsn)
+{
+ uint16_t size = ntohs (hdcsn->header.size);
+ if (size < sizeof (struct MulticastJoinDecisionMessageHeader) +
+ sizeof (struct MulticastJoinDecisionMessage))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+
+ struct Channel *chn = cls;
+ if (NULL == chn)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (NULL == chn->group || GNUNET_NO != chn->group->is_origin)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ switch (chn->join_status)
+ {
+ case JOIN_REFUSED:
+ return GNUNET_SYSERR;
+
+ case JOIN_ADMITTED:
+ return GNUNET_OK;
+
+ case JOIN_NOT_ASKED:
+ case JOIN_WAITING:
+ break;
+ }
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Incoming join decision message from CADET.
+ */
+static void
+handle_cadet_join_decision (void *cls,
+ const struct MulticastJoinDecisionMessageHeader *hdcsn)
+{
+ const struct MulticastJoinDecisionMessage *
+ dcsn = (const struct MulticastJoinDecisionMessage *) &hdcsn[1];
+
+ struct Channel *chn = cls;
+ GNUNET_CADET_receive_done (chn->channel);
+
+ // FIXME: do we need to copy chn->peer or compare it with hdcsn->peer?
+ struct Member *mem = (struct Member *) chn->group;
+ client_send_join_decision (mem, hdcsn);
+ if (GNUNET_YES == ntohl (dcsn->is_admitted))
+ {
+ chn->join_status = JOIN_ADMITTED;
+ }
+ else
+ {
+ chn->join_status = JOIN_REFUSED;
+ cadet_channel_destroy (chn);
+ }
+}
+
+
+static int
+check_cadet_message (void *cls,
+ const struct GNUNET_MULTICAST_MessageHeader *msg)
+{
+ uint16_t size = ntohs (msg->header.size);
+ if (size < sizeof (*msg))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+
+ struct Channel *chn = cls;
+ if (NULL == chn)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (ntohl (msg->purpose.size) != (size
+ - sizeof (msg->header)
+ - sizeof (msg->hop_counter)
+ - sizeof (msg->signature)))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK !=
+ GNUNET_CRYPTO_eddsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_MESSAGE,
+ &msg->purpose, &msg->signature,
+ &chn->group_pub_key))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Incoming multicast message from CADET.
+ */
+static void
+handle_cadet_message (void *cls,
+ const struct GNUNET_MULTICAST_MessageHeader *msg)
+{
+ struct Channel *chn = cls;
+ GNUNET_CADET_receive_done (chn->channel);
+ client_send_all (&chn->group_pub_hash, &msg->header);
+}
+
+
+static int
+check_cadet_request (void *cls,
+ const struct GNUNET_MULTICAST_RequestHeader *req)
+{
+ uint16_t size = ntohs (req->header.size);
+ if (size < sizeof (*req))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+
+ struct Channel *chn = cls;
+ if (NULL == chn)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (ntohl (req->purpose.size) != (size
+ - sizeof (req->header)
+ - sizeof (req->member_pub_key)
+ - sizeof (req->signature)))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK !=
+ GNUNET_CRYPTO_ecdsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_REQUEST,
+ &req->purpose, &req->signature,
+ &req->member_pub_key))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Incoming multicast request message from CADET.
+ */
+static void
+handle_cadet_request (void *cls,
+ const struct GNUNET_MULTICAST_RequestHeader *req)
+{
+ struct Channel *chn = cls;
+ GNUNET_CADET_receive_done (chn->channel);
+ client_send_origin (&chn->group_pub_hash, &req->header);
+}
+
+
+static int
+check_cadet_replay_request (void *cls,
+ const struct MulticastReplayRequestMessage *req)
+{
+ uint16_t size = ntohs (req->header.size);
+ if (size < sizeof (*req))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+
+ struct Channel *chn = cls;
+ if (NULL == chn)
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Incoming multicast replay request from CADET.
+ */
+static void
+handle_cadet_replay_request (void *cls,
+ const struct MulticastReplayRequestMessage *req)
+{
+ struct Channel *chn = cls;
+ GNUNET_CADET_receive_done (chn->channel);
+
+ struct MulticastReplayRequestMessage rep = *req;
+ GNUNET_memcpy (&rep.member_pub_key, &chn->member_pub_key, sizeof (chn->member_pub_key));
+
+ struct GNUNET_CONTAINER_MultiHashMap *
+ grp_replay_req = GNUNET_CONTAINER_multihashmap_get (replay_req_cadet,
+ &chn->group->pub_key_hash);
+ if (NULL == grp_replay_req)
+ {
+ grp_replay_req = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
+ GNUNET_CONTAINER_multihashmap_put (replay_req_cadet,
+ &chn->group->pub_key_hash, grp_replay_req,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
+ }
+ struct GNUNET_HashCode key_hash;
+ replay_key_hash (rep.fragment_id, rep.message_id, rep.fragment_offset,
+ rep.flags, &key_hash);
+ GNUNET_CONTAINER_multihashmap_put (grp_replay_req, &key_hash, chn,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+
+ client_send_random (&chn->group_pub_hash, &rep.header);
+}
+
+
+static int
+check_cadet_replay_response (void *cls,
+ const struct MulticastReplayResponseMessage *res)
+{
+ struct Channel *chn = cls;
+ if (NULL == chn)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Incoming multicast replay response from CADET.
+ */
+static void
+handle_cadet_replay_response (void *cls,
+ const struct MulticastReplayResponseMessage *res)
+{
+ struct Channel *chn = cls;
+ GNUNET_CADET_receive_done (chn->channel);
+
+ /* @todo FIXME: got replay error response, send request to other members */
+}
+
+
+static void
+group_set_cadet_port_hash (struct Group *grp)
+{
+ struct CadetPort {
+ struct GNUNET_CRYPTO_EddsaPublicKey pub_key;
+ uint32_t app_type;
+ } port = {
+ grp->pub_key,
+ GNUNET_APPLICATION_TYPE_MULTICAST,
+ };
+ GNUNET_CRYPTO_hash (&port, sizeof (port), &grp->cadet_port_hash);
+}
+
+
+
+/**
+ * Create new outgoing CADET channel.
+ *
+ * @param peer
+ * Peer to connect to.
+ * @param group_pub_key
+ * Public key of group the channel belongs to.
+ * @param group_pub_hash
+ * Hash of @a group_pub_key.
+ *
+ * @return Channel.
+ */
+static struct Channel *
+cadet_channel_create (struct Group *grp, struct GNUNET_PeerIdentity *peer)
+{
+ struct Channel *chn = GNUNET_malloc (sizeof (*chn));
+ chn->group = grp;
+ chn->group_pub_key = grp->pub_key;
+ chn->group_pub_hash = grp->pub_key_hash;
+ chn->peer = *peer;
+ chn->direction = DIR_OUTGOING;
+ chn->is_connected = GNUNET_NO;
+ chn->join_status = JOIN_WAITING;
+
+ struct GNUNET_MQ_MessageHandler cadet_handlers[] = {
+ GNUNET_MQ_hd_var_size (cadet_message,
+ GNUNET_MESSAGE_TYPE_MULTICAST_MESSAGE,
+ struct GNUNET_MULTICAST_MessageHeader,
+ chn),
- GNUNET_free (chn);
+ GNUNET_MQ_hd_var_size (cadet_join_decision,
+ GNUNET_MESSAGE_TYPE_MULTICAST_JOIN_DECISION,
+ struct MulticastJoinDecisionMessageHeader,
+ chn),
+
+ GNUNET_MQ_hd_var_size (cadet_replay_request,
+ GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_REQUEST,
+ struct MulticastReplayRequestMessage,
+ chn),
+
+ GNUNET_MQ_hd_var_size (cadet_replay_response,
+ GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_RESPONSE,
+ struct MulticastReplayResponseMessage,
+ chn),
+
+ GNUNET_MQ_handler_end ()
+ };
+
+ chn->channel = GNUNET_CADET_channel_creatE (cadet, chn, &chn->peer,
+ &grp->cadet_port_hash,
+ GNUNET_CADET_OPTION_RELIABLE,
+ cadet_notify_window_change,
+ cadet_notify_disconnect,
+ cadet_handlers);
+ GNUNET_CONTAINER_multihashmap_put (channels_out, &chn->group_pub_hash, chn,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ return chn;
}
+/**
+ * Destroy outgoing CADET channel.
+ */
static void
-group_set_cadet_port_hash (struct Group *grp)
+cadet_channel_destroy (struct Channel *chn)
{
- struct CadetPort {
- struct GNUNET_CRYPTO_EddsaPublicKey pub_key;
- uint32_t app_type;
- } port = {
- grp->pub_key,
- GNUNET_APPLICATION_TYPE_MULTICAST,
- };
- GNUNET_CRYPTO_hash (&port, sizeof (port), &grp->cadet_port_hash);
+ GNUNET_CADET_channel_destroy (chn->channel);
+ GNUNET_CONTAINER_multihashmap_remove_all (channels_out, &chn->group_pub_hash);
+ GNUNET_free (chn);
}
-
/**
* Handle a connecting client starting an origin.
*/
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
group_set_cadet_port_hash (grp);
- orig->cadet_port = GNUNET_CADET_open_port (cadet, &grp->cadet_port_hash,
- cadet_notify_channel_new, NULL);
+
+ struct GNUNET_MQ_MessageHandler cadet_handlers[] = {
+ GNUNET_MQ_hd_var_size (cadet_message,
+ GNUNET_MESSAGE_TYPE_MULTICAST_MESSAGE,
+ struct GNUNET_MULTICAST_MessageHeader,
+ grp),
+
+ GNUNET_MQ_hd_var_size (cadet_request,
+ GNUNET_MESSAGE_TYPE_MULTICAST_REQUEST,
+ struct GNUNET_MULTICAST_RequestHeader,
+ grp),
+
+ GNUNET_MQ_hd_var_size (cadet_join_request,
+ GNUNET_MESSAGE_TYPE_MULTICAST_JOIN_REQUEST,
+ struct MulticastJoinRequestMessage,
+ grp),
+
+ GNUNET_MQ_hd_var_size (cadet_replay_request,
+ GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_REQUEST,
+ struct MulticastReplayRequestMessage,
+ grp),
+
+ GNUNET_MQ_hd_var_size (cadet_replay_response,
+ GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_RESPONSE,
+ struct MulticastReplayResponseMessage,
+ grp),
+
+ GNUNET_MQ_handler_end ()
+ };
+
+
+ orig->cadet_port = GNUNET_CADET_open_porT (cadet,
+ &grp->cadet_port_hash,
+ cadet_notify_connect,
+ NULL,
+ cadet_notify_window_change,
+ cadet_notify_disconnect,
+ cadet_handlers);
}
else
{
}
client_send_all (&grp->pub_key_hash, &out->header);
- if (0 == cadet_send_children (&grp->pub_key_hash, &out->header))
- {
- client_send_ack (&grp->pub_key_hash);
- }
+ cadet_send_children (&grp->pub_key_hash, &out->header);
+ client_send_ack (&grp->pub_key_hash);
GNUNET_free (out);
GNUNET_SERVICE_client_continue (client);
}
-/**
- * Incoming join request message from CADET.
- */
-int
-cadet_recv_join_request (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **ctx,
- const struct GNUNET_MessageHeader *m)
-{
- GNUNET_CADET_receive_done(channel);
- const struct MulticastJoinRequestMessage *
- req = (const struct MulticastJoinRequestMessage *) m;
- uint16_t size = ntohs (m->size);
- if (size < sizeof (*req))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (NULL != *ctx)
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (ntohl (req->purpose.size) != (size
- - sizeof (req->header)
- - sizeof (req->reserved)
- - sizeof (req->signature)))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (GNUNET_OK !=
- GNUNET_CRYPTO_ecdsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_REQUEST,
- &req->purpose, &req->signature,
- &req->member_pub_key))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
-
- struct GNUNET_HashCode group_pub_hash;
- GNUNET_CRYPTO_hash (&req->group_pub_key, sizeof (req->group_pub_key), &group_pub_hash);
-
- struct Channel *chn = GNUNET_malloc (sizeof *chn);
- chn->channel = channel;
- chn->group_pub_key = req->group_pub_key;
- chn->group_pub_hash = group_pub_hash;
- chn->member_pub_key = req->member_pub_key;
- chn->peer = req->peer;
- chn->join_status = JOIN_WAITING;
- GNUNET_CONTAINER_multihashmap_put (channels_in, &chn->group_pub_hash, chn,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
- *ctx = chn;
-
- client_send_all (&group_pub_hash, m);
- return GNUNET_OK;
-}
-
-
-/**
- * Incoming join decision message from CADET.
- */
-int
-cadet_recv_join_decision (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **ctx,
- const struct GNUNET_MessageHeader *m)
-{
- GNUNET_CADET_receive_done (channel);
- const struct MulticastJoinDecisionMessageHeader *
- hdcsn = (const struct MulticastJoinDecisionMessageHeader *) m;
- const struct MulticastJoinDecisionMessage *
- dcsn = (const struct MulticastJoinDecisionMessage *) &hdcsn[1];
- uint16_t size = ntohs (m->size);
- if (size < sizeof (struct MulticastJoinDecisionMessageHeader) +
- sizeof (struct MulticastJoinDecisionMessage))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- struct Channel *chn = *ctx;
- if (NULL == chn)
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (NULL == chn->group || GNUNET_NO != chn->group->is_origin)
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- switch (chn->join_status)
- {
- case JOIN_REFUSED:
- return GNUNET_SYSERR;
-
- case JOIN_ADMITTED:
- return GNUNET_OK;
-
- case JOIN_NOT_ASKED:
- case JOIN_WAITING:
- break;
- }
-
- // FIXME: do we need to copy chn->peer or compare it with hdcsn->peer?
- struct Member *mem = (struct Member *) chn->group;
- client_send_join_decision (mem, hdcsn);
- if (GNUNET_YES == ntohl (dcsn->is_admitted))
- {
- chn->join_status = JOIN_ADMITTED;
- return GNUNET_OK;
- }
- else
- {
- chn->join_status = JOIN_REFUSED;
- return GNUNET_SYSERR;
- }
-}
-
-/**
- * Incoming multicast message from CADET.
- */
-int
-cadet_recv_message (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **ctx,
- const struct GNUNET_MessageHeader *m)
-{
- GNUNET_CADET_receive_done(channel);
- const struct GNUNET_MULTICAST_MessageHeader *
- msg = (const struct GNUNET_MULTICAST_MessageHeader *) m;
- uint16_t size = ntohs (m->size);
- if (size < sizeof (*msg))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- struct Channel *chn = *ctx;
- if (NULL == chn)
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (ntohl (msg->purpose.size) != (size
- - sizeof (msg->header)
- - sizeof (msg->hop_counter)
- - sizeof (msg->signature)))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (GNUNET_OK !=
- GNUNET_CRYPTO_eddsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_MESSAGE,
- &msg->purpose, &msg->signature,
- &chn->group_pub_key))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
-
- client_send_all (&chn->group_pub_hash, m);
- return GNUNET_OK;
-}
-
-
-/**
- * Incoming multicast request message from CADET.
- */
-int
-cadet_recv_request (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **ctx,
- const struct GNUNET_MessageHeader *m)
-{
- GNUNET_CADET_receive_done(channel);
- const struct GNUNET_MULTICAST_RequestHeader *
- req = (const struct GNUNET_MULTICAST_RequestHeader *) m;
- uint16_t size = ntohs (m->size);
- if (size < sizeof (*req))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- struct Channel *chn = *ctx;
- if (NULL == chn)
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (ntohl (req->purpose.size) != (size
- - sizeof (req->header)
- - sizeof (req->member_pub_key)
- - sizeof (req->signature)))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (GNUNET_OK !=
- GNUNET_CRYPTO_ecdsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_REQUEST,
- &req->purpose, &req->signature,
- &req->member_pub_key))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
-
- client_send_origin (&chn->group_pub_hash, m);
- return GNUNET_OK;
-}
-
-
-/**
- * Incoming multicast replay request from CADET.
- */
-int
-cadet_recv_replay_request (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **ctx,
- const struct GNUNET_MessageHeader *m)
-{
- GNUNET_CADET_receive_done(channel);
- struct MulticastReplayRequestMessage rep;
- uint16_t size = ntohs (m->size);
- if (size < sizeof (rep))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- struct Channel *chn = *ctx;
-
- GNUNET_memcpy (&rep, m, sizeof (rep));
- GNUNET_memcpy (&rep.member_pub_key, &chn->member_pub_key, sizeof (chn->member_pub_key));
-
- struct GNUNET_CONTAINER_MultiHashMap *
- grp_replay_req = GNUNET_CONTAINER_multihashmap_get (replay_req_cadet,
- &chn->group->pub_key_hash);
- if (NULL == grp_replay_req)
- {
- grp_replay_req = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
- GNUNET_CONTAINER_multihashmap_put (replay_req_cadet,
- &chn->group->pub_key_hash, grp_replay_req,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
- }
- struct GNUNET_HashCode key_hash;
- replay_key_hash (rep.fragment_id, rep.message_id, rep.fragment_offset,
- rep.flags, &key_hash);
- GNUNET_CONTAINER_multihashmap_put (grp_replay_req, &key_hash, chn,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
-
- client_send_random (&chn->group_pub_hash, &rep.header);
- return GNUNET_OK;
-}
-
-
-/**
- * Incoming multicast replay response from CADET.
- */
-int
-cadet_recv_replay_response (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **ctx,
- const struct GNUNET_MessageHeader *m)
-{
- GNUNET_CADET_receive_done(channel);
- //struct Channel *chn = *ctx;
-
- /* @todo FIXME: got replay error response, send request to other members */
-
- return GNUNET_OK;
-}
-
-
/**
* A new client connected.
*
}
-/**
- * Message handlers for CADET.
- */
-static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
- { cadet_recv_join_request,
- GNUNET_MESSAGE_TYPE_MULTICAST_JOIN_REQUEST, 0 },
-
- { cadet_recv_join_decision,
- GNUNET_MESSAGE_TYPE_MULTICAST_JOIN_DECISION, 0 },
-
- { cadet_recv_message,
- GNUNET_MESSAGE_TYPE_MULTICAST_MESSAGE, 0 },
-
- { cadet_recv_request,
- GNUNET_MESSAGE_TYPE_MULTICAST_REQUEST, 0 },
-
- { cadet_recv_replay_request,
- GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_REQUEST, 0 },
-
- { cadet_recv_replay_response,
- GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_RESPONSE, 0 },
-
- { NULL, 0, 0 }
-};
-
-
/**
* Service started.
*
replay_req_cadet = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
replay_req_client = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
- cadet = GNUNET_CADET_connect (cfg, NULL,
- cadet_notify_channel_end,
- cadet_handlers);
+ cadet = GNUNET_CADET_connecT (cfg);
+
GNUNET_assert (NULL != cadet);
GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
projects / oweals / gnunet.git / blobdiff