/*
This file is part of GNUnet.
- Copyright (C) 2013-2015 GNUnet e.V.
+ Copyright (C) 2013-2017 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
};
-/**
- * An incoming session from CADET.
- */
-struct CadetIncomingSession;
-
-
/**
* A scalarproduct session which tracks an offer for a
* multiplication service by a local client.
struct BobServiceSession
{
- /**
- * (hopefully) unique transaction ID
- */
- struct GNUNET_HashCode session_id;
-
/**
* The client this request is related to.
*/
*/
gcry_mpi_point_t prod_h_i_b_i;
- /**
- * Handle for our associated incoming CADET session, or NULL
- * if we have not gotten one yet.
- */
- struct CadetIncomingSession *cadet;
-
/**
* How many elements will be supplied in total from the client.
*/
*/
int in_destroy;
-};
-
-
-/**
- * An incoming session from CADET.
- */
-struct CadetIncomingSession
-{
-
- /**
- * Associated client session, or NULL.
- */
- struct BobServiceSession *s;
-
/**
* The CADET channel.
*/
*/
struct GNUNET_MQ_Handle *cadet_mq;
- /**
- * Has this CADET session been added to the map yet?
- * #GNUNET_YES if so, in which case @e session_id is
- * the key.
- */
- int in_map;
-
- /**
- * Are we already in #destroy_cadet_session()?
- */
- int in_destroy;
-
};
*/
static const struct GNUNET_CONFIGURATION_Handle *cfg;
-/**
- * Map of `struct BobServiceSession`, by session keys.
- */
-static struct GNUNET_CONTAINER_MultiHashMap *client_sessions;
-
-/**
- * Map of `struct CadetIncomingSession`, by session keys.
- */
-static struct GNUNET_CONTAINER_MultiHashMap *cadet_sessions;
-
/**
* Handle to the CADET service.
*/
static struct GNUNET_CRYPTO_EccDlogContext *edc;
-/**
- * Finds a not terminated client session in the respective map based on
- * session key.
- *
- * @param key the session key we want to search for
- * @return the matching session, or NULL for none
- */
-static struct BobServiceSession *
-find_matching_client_session (const struct GNUNET_HashCode *key)
-{
- return GNUNET_CONTAINER_multihashmap_get (client_sessions,
- key);
-}
-
-
-/**
- * Finds a CADET session in the respective map based on session key.
- *
- * @param key the session key we want to search for
- * @return the matching session, or NULL for none
- */
-static struct CadetIncomingSession *
-find_matching_cadet_session (const struct GNUNET_HashCode *key)
-{
- return GNUNET_CONTAINER_multihashmap_get (cadet_sessions,
- key);
-}
-
-
/**
* Callback used to free the elements in the map.
*
}
-/**
- * Destroy session state, we are done with it.
- *
- * @param session the session to free elements from
- */
-static void
-destroy_cadet_session (struct CadetIncomingSession *s);
-
-
/**
* Destroy session state, we are done with it.
*
static void
destroy_service_session (struct BobServiceSession *s)
{
- struct CadetIncomingSession *in;
unsigned int i;
if (GNUNET_YES == s->in_destroy)
return;
s->in_destroy = GNUNET_YES;
- if (NULL != (in = s->cadet))
- {
- s->cadet = NULL;
- destroy_cadet_session (in);
- }
if (NULL != s->client)
{
struct GNUNET_SERVICE_Client *c = s->client;
-
+
s->client = NULL;
GNUNET_SERVICE_client_drop (c);
}
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (client_sessions,
- &s->session_id,
- s));
if (NULL != s->intersected_elements)
{
GNUNET_CONTAINER_multihashmap_iterate (s->intersected_elements,
gcry_mpi_point_release (s->prod_h_i_b_i);
s->prod_h_i_b_i = NULL;
}
- GNUNET_CADET_close_port (s->port);
- GNUNET_free (s);
-}
-
-
-/**
- * Destroy incoming CADET session state, we are done with it.
- *
- * @param in the session to free elements from
- */
-static void
-destroy_cadet_session (struct CadetIncomingSession *in)
-{
- struct BobServiceSession *s;
-
- if (GNUNET_YES == in->in_destroy)
- return;
- in->in_destroy = GNUNET_YES;
- if (NULL != (s = in->s))
- {
- in->s = NULL;
- destroy_service_session (s);
- }
- if (GNUNET_YES == in->in_map)
- {
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (cadet_sessions,
- &in->session_id,
- in));
- in->in_map = GNUNET_NO;
- }
- if (NULL != in->cadet_mq)
+ if (NULL != s->port)
{
- GNUNET_MQ_destroy (in->cadet_mq);
- in->cadet_mq = NULL;
+ GNUNET_CADET_close_port (s->port);
+ s->port = NULL;
}
- if (NULL != in->channel)
+ if (NULL != s->channel)
{
- GNUNET_CADET_channel_destroy (in->channel);
- in->channel = NULL;
+ GNUNET_CADET_channel_destroy (s->channel);
+ s->channel = NULL;
}
- GNUNET_free (in);
+ GNUNET_free (s);
}
*
* It must NOT call #GNUNET_CADET_channel_destroy() on the channel.
*
- * @param cls closure (set from #GNUNET_CADET_connect())
+ * @param cls the `struct BobServiceSession`
* @param channel connection to the other end (henceforth invalid)
* @param channel_ctx place where local state associated
* with the channel is stored
*/
static void
cb_channel_destruction (void *cls,
- const struct GNUNET_CADET_Channel *channel,
- void *channel_ctx)
+ const struct GNUNET_CADET_Channel *channel)
{
- struct CadetIncomingSession *in = channel_ctx;
- struct BobServiceSession *s;
+ struct BobServiceSession *s = cls;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Peer disconnected, terminating session %s with peer %s\n",
- GNUNET_h2s (&in->session_id),
- GNUNET_i2s (&in->peer));
- if (NULL != in->cadet_mq)
- {
- GNUNET_MQ_destroy (in->cadet_mq);
- in->cadet_mq = NULL;
- }
- in->channel = NULL;
- if (NULL != (s = in->s))
+ GNUNET_h2s (&s->session_id),
+ GNUNET_i2s (&s->peer));
+ s->channel = NULL;
+ if (GNUNET_SCALARPRODUCT_STATUS_ACTIVE == s->status)
{
- if (GNUNET_SCALARPRODUCT_STATUS_ACTIVE == s->status)
- {
- s->status = GNUNET_SCALARPRODUCT_STATUS_FAILURE;
- prepare_client_end_notification (s);
- }
+ s->status = GNUNET_SCALARPRODUCT_STATUS_FAILURE;
+ prepare_client_end_notification (s);
}
- destroy_cadet_session (in);
+ destroy_service_session (s);
}
GNUNET_MQ_notify_sent (e,
&bob_cadet_done_cb,
s);
- GNUNET_MQ_send (s->cadet->cadet_mq,
+ GNUNET_MQ_send (s->cadet_mq,
e);
}
/**
- * Handle a multipart-chunk of a request from another service to
+ * Check a multipart-chunk of a request from another service to
* calculate a scalarproduct with us.
*
* @param cls closure (set from #GNUNET_CADET_connect)
- * @param channel connection to the other end
- * @param channel_ctx place to store local state associated with the @a channel
- * @param message the actual message
+ * @param msg the actual message
* @return #GNUNET_OK to keep the connection open,
* #GNUNET_SYSERR to close it (signal serious error)
*/
static int
-handle_alices_cryptodata_message (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **channel_ctx,
- const struct GNUNET_MessageHeader *message)
+check_alices_cryptodata_message (void *cls,
+ const struct EccAliceCryptodataMessage *msg)
{
- struct CadetIncomingSession *in = *channel_ctx;
- struct BobServiceSession *s;
- const struct EccAliceCryptodataMessage *msg;
- const struct GNUNET_CRYPTO_EccPoint *payload;
+ struct BobServiceSession *s = cls;
uint32_t contained_elements;
size_t msg_length;
uint16_t msize;
unsigned int max;
- unsigned int i;
- const struct MpiElement *b_i;
- gcry_mpi_point_t tmp;
- gcry_mpi_point_t g_i;
- gcry_mpi_point_t h_i;
- gcry_mpi_point_t g_i_b_i;
- gcry_mpi_point_t h_i_b_i;
- /* sanity checks */
- if (NULL == in)
+ msize = ntohs (msg->header.size);
+ if (msize <= sizeof (struct EccAliceCryptodataMessage))
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
- s = in->s;
- if (NULL == s)
+ contained_elements = ntohl (msg->contained_element_count);
+ /* Our intersection may still be ongoing, but this is nevertheless
+ an upper bound on the required array size */
+ max = GNUNET_CONTAINER_multihashmap_size (s->intersected_elements);
+ msg_length = sizeof (struct EccAliceCryptodataMessage)
+ + contained_elements * sizeof (struct GNUNET_CRYPTO_EccPoint) * 2;
+ if ( (msize != msg_length) ||
+ (0 == contained_elements) ||
+ (contained_elements > UINT16_MAX) ||
+ (max < contained_elements + s->cadet_received_element_count) )
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
+ return GNUNET_OK;
+}
+
+
+/**
+ * Handle a multipart-chunk of a request from another service to
+ * calculate a scalarproduct with us.
+ *
+ * @param cls closure (set from #GNUNET_CADET_connect)
+ * @param msg the actual message
+ */
+static void
+handle_alices_cryptodata_message (void *cls,
+ const struct EccAliceCryptodataMessage *msg)
+{
+ struct BobServiceSession *s = cls;
+ const struct GNUNET_CRYPTO_EccPoint *payload;
+ uint32_t contained_elements;
+ unsigned int max;
+ unsigned int i;
+ const struct MpiElement *b_i;
+ gcry_mpi_point_t tmp;
+ gcry_mpi_point_t g_i;
+ gcry_mpi_point_t h_i;
+ gcry_mpi_point_t g_i_b_i;
+ gcry_mpi_point_t h_i_b_i;
+
+ contained_elements = ntohl (msg->contained_element_count);
+ max = GNUNET_CONTAINER_multihashmap_size (s->intersected_elements);
/* sort our vector for the computation */
if (NULL == s->sorted_elements)
{
s->sorted_elements
- = GNUNET_malloc (GNUNET_CONTAINER_multihashmap_size (s->intersected_elements) *
- sizeof (struct MpiElement));
+ = GNUNET_new_array (GNUNET_CONTAINER_multihashmap_size (s->intersected_elements),
+ struct MpiElement);
s->used_element_count = 0;
GNUNET_CONTAINER_multihashmap_iterate (s->intersected_elements,
©_element_cb,
&element_cmp);
}
- /* parse message */
- msize = ntohs (message->size);
- if (msize <= sizeof (struct EccAliceCryptodataMessage))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- msg = (const struct EccAliceCryptodataMessage *) message;
- contained_elements = ntohl (msg->contained_element_count);
- /* Our intersection may still be ongoing, but this is nevertheless
- an upper bound on the required array size */
- max = GNUNET_CONTAINER_multihashmap_size (s->intersected_elements);
- msg_length = sizeof (struct EccAliceCryptodataMessage)
- + contained_elements * sizeof (struct GNUNET_CRYPTO_EccPoint) * 2;
- if ( (msize != msg_length) ||
- (0 == contained_elements) ||
- (contained_elements > UINT16_MAX) ||
- (max < contained_elements + s->cadet_received_element_count) )
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received %u crypto values from Alice\n",
(unsigned int) contained_elements);
CADET response(s) */
transmit_bobs_cryptodata_message (s);
}
- GNUNET_CADET_receive_done (s->cadet->channel);
- return GNUNET_OK;
+ GNUNET_CADET_receive_done (s->channel);
}
case GNUNET_SET_STATUS_DONE:
s->intersection_op = NULL;
GNUNET_break (NULL == s->intersection_set);
- GNUNET_CADET_receive_done (s->cadet->channel);
+ GNUNET_CADET_receive_done (s->channel);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Finished intersection, %d items remain\n",
GNUNET_CONTAINER_multihashmap_size (s->intersected_elements));
(unsigned int) s->total);
s->intersection_op
- = GNUNET_SET_prepare (&s->cadet->peer,
+ = GNUNET_SET_prepare (&s->peer,
&set_sid,
NULL,
GNUNET_SET_RESULT_REMOVED,
* Handle a request from Alice to calculate a scalarproduct with us (Bob).
*
* @param cls closure (set from #GNUNET_CADET_connect)
- * @param channel connection to the other end
- * @param channel_ctx place to store the `struct CadetIncomingSession *`
- * @param message the actual message
- * @return #GNUNET_OK to keep the connection open,
- * #GNUNET_SYSERR to close it (signal serious error)
+ * @param msg the actual message
*/
-static int
+static void
handle_alices_computation_request (void *cls,
- struct GNUNET_CADET_Channel *channel,
- void **channel_ctx,
- const struct GNUNET_MessageHeader *message)
+ const struct EccServiceRequestMessage *msg)
{
- struct CadetIncomingSession *in = *channel_ctx;
- struct BobServiceSession *s;
- const struct EccServiceRequestMessage *msg;
+ struct BobServiceSession *s = cls;
- msg = (const struct EccServiceRequestMessage *) message;
- if (GNUNET_YES == in->in_map)
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (NULL != find_matching_cadet_session (&msg->session_id))
- {
- /* not unique, got one like this already */
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- in->session_id = msg->session_id;
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_put (cadet_sessions,
- &in->session_id,
- in,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- s = find_matching_client_session (&in->session_id);
- if (NULL == s)
- {
- /* no client waiting for this request, wait for client */
- return GNUNET_OK;
- }
- GNUNET_assert (NULL == s->cadet);
- /* pair them up */
- in->s = s;
- s->cadet = in;
+ s->session_id = msg->session_id; // ??
if (s->client_received_element_count == s->total)
start_intersection (s);
- return GNUNET_OK;
}
* preliminary initialization, more happens after we get Alice's first
* message.
*
- * @param cls closure
+ * @param cls our `struct BobServiceSession`
* @param channel new handle to the channel
* @param initiator peer that started the channel
- * @param port unused
- * @param options unused
* @return session associated with the channel
*/
static void *
cb_channel_incoming (void *cls,
struct GNUNET_CADET_Channel *channel,
- const struct GNUNET_PeerIdentity *initiator,
- const struct GNUNET_HashCode *port,
- enum GNUNET_CADET_ChannelOption options)
+ const struct GNUNET_PeerIdentity *initiator)
{
- struct CadetIncomingSession *in;
+ struct BobServiceSession *s = cls;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"New incoming channel from peer %s.\n",
GNUNET_i2s (initiator));
- in = GNUNET_new (struct CadetIncomingSession);
- in->peer = *initiator;
- in->channel = channel;
- in->cadet_mq = GNUNET_CADET_mq_create (in->channel);
- return in;
+ GNUNET_CADET_close_port (s->port);
+ s->port = NULL;
+ s->peer = *initiator;
+ s->channel = channel;
+ s->cadet_mq = GNUNET_CADET_get_mq (s->channel);
+ return s;
}
/* more to come */
return;
}
- if (NULL == s->cadet)
+ if (NULL == s->channel)
{
/* no Alice waiting for this request, wait for Alice */
return;
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
- if (NULL != find_matching_client_session (&msg->session_key))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
return GNUNET_OK;
}
const struct BobComputationMessage *msg)
{
struct BobServiceSession *s = cls;
- struct CadetIncomingSession *in;
+ struct GNUNET_MQ_MessageHandler cadet_handlers[] = {
+ GNUNET_MQ_hd_fixed_size (alices_computation_request,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_SESSION_INITIALIZATION,
+ struct EccServiceRequestMessage,
+ s),
+ GNUNET_MQ_hd_var_size (alices_cryptodata_message,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_ALICE_CRYPTODATA,
+ struct EccAliceCryptodataMessage,
+ s),
+ GNUNET_MQ_handler_end ()
+ };
uint32_t contained_count;
uint32_t total_count;
const struct GNUNET_SCALARPRODUCT_Element *elements;
s->total = total_count;
s->client_received_element_count = contained_count;
s->session_id = msg->session_key;
- s->port = GNUNET_CADET_open_port (my_cadet,
- &msg->session_key,
- &cb_channel_incoming,
- s);
- if (NULL == s->port)
- {
- GNUNET_break (0);
- GNUNET_SERVICE_client_drop (s->client);
- return;
- }
- GNUNET_break (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_put (client_sessions,
- &s->session_id,
- s,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
elements = (const struct GNUNET_SCALARPRODUCT_Element *) &msg[1];
s->intersected_elements
= GNUNET_CONTAINER_multihashmap_create (s->total,
s->used_element_count++;
}
GNUNET_SERVICE_client_continue (s->client);
- if (s->total != s->client_received_element_count)
- {
- /* multipart msg */
- return;
- }
- in = find_matching_cadet_session (&s->session_id);
- if (NULL == in)
+ s->port = GNUNET_CADET_open_porT (my_cadet,
+ &msg->session_key,
+ &cb_channel_incoming,
+ s,
+ NULL,
+ &cb_channel_destruction,
+ cadet_handlers);
+ if (NULL == s->port)
{
- /* nothing yet, wait for Alice */
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (s->client);
return;
}
- GNUNET_assert (NULL == in->s);
- /* pair them up */
- in->s = s;
- s->cadet = in;
- start_intersection (s);
}
GNUNET_CRYPTO_ecc_dlog_release (edc);
edc = NULL;
}
- GNUNET_CONTAINER_multihashmap_destroy (client_sessions);
- client_sessions = NULL;
- GNUNET_CONTAINER_multihashmap_destroy (cadet_sessions);
- cadet_sessions = NULL;
}
const struct GNUNET_CONFIGURATION_Handle *c,
struct GNUNET_SERVICE_Handle *service)
{
- static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
- { &handle_alices_computation_request,
- GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_SESSION_INITIALIZATION,
- sizeof (struct EccServiceRequestMessage) },
- { &handle_alices_cryptodata_message,
- GNUNET_MESSAGE_TYPE_SCALARPRODUCT_ECC_ALICE_CRYPTODATA,
- 0},
- { NULL, 0, 0}
- };
-
cfg = c;
/* We don't really do DLOG, so we can setup with very minimal resources */
edc = GNUNET_CRYPTO_ecc_dlog_prepare (4 /* max value */,
2 /* RAM */);
- client_sessions = GNUNET_CONTAINER_multihashmap_create (128,
- GNUNET_YES);
- cadet_sessions = GNUNET_CONTAINER_multihashmap_create (128,
- GNUNET_YES);
- my_cadet = GNUNET_CADET_connect (cfg,
- NULL,
- &cb_channel_destruction,
- cadet_handlers);
+ my_cadet = GNUNET_CADET_connecT (cfg);
GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
NULL);
if (NULL == my_cadet)
GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_BOB,
struct BobComputationMessage,
NULL),
-GNUNET_MQ_hd_var_size (bob_client_message_multipart,
- GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_MULTIPART_BOB,
- struct ComputationBobCryptodataMultipartMessage,
- NULL),
+ GNUNET_MQ_hd_var_size (bob_client_message_multipart,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_MULTIPART_BOB,
+ struct ComputationBobCryptodataMultipartMessage,
+ NULL),
GNUNET_MQ_handler_end ());
projects / oweals / gnunet.git / blobdiff