/*
This file is part of GNUnet.
- (C) 2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2013, 2014, 2016 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
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
-
/**
* @file scalarproduct/scalarproduct_api.c
* @brief API for the scalarproduct
* @author Christian Fuchs
* @author Gaurav Kukreja
- *
+ * @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#define LOG(kind,...) GNUNET_log_from (kind, "scalarproduct-api",__VA_ARGS__)
-/**************************************************************
- *** Datatype Declarations **********
- **************************************************************/
/**
- * the abstraction function for our internal callback
+ * The abstraction function for our internal callback
+ *
+ * @param h computation handle
+ * @param msg response we got, NULL on errors
+ * @param status processing status code
*/
-typedef void (*GNUNET_SCALARPRODUCT_ResponseMessageHandler) (void *cls,
- const struct GNUNET_MessageHeader *msg,
- enum GNUNET_SCALARPRODUCT_ResponseStatus status);
+typedef void
+(*GNUNET_SCALARPRODUCT_ResponseMessageHandler) (struct GNUNET_SCALARPRODUCT_ComputationHandle *h,
+ const struct ClientResponseMessage *msg,
+ enum GNUNET_SCALARPRODUCT_ResponseStatus status);
+
/**
- * Entry in the request queue per client
+ * A handle returned for each computation
*/
struct GNUNET_SCALARPRODUCT_ComputationHandle
{
- /**
- * This is a linked list.
- */
- struct GNUNET_SCALARPRODUCT_ComputationHandle *next;
-
- /**
- * This is a linked list.
- */
- struct GNUNET_SCALARPRODUCT_ComputationHandle *prev;
-
/**
* Our configuration.
*/
/**
* Current connection to the scalarproduct service.
*/
- struct GNUNET_CLIENT_Connection *client;
+ struct GNUNET_MQ_Handle *mq;
/**
- * Handle for statistics.
- */
- struct GNUNET_STATISTICS_Handle *stats;
-
- /**
- * The shared session key identifying this computation
- */
- struct GNUNET_HashCode key;
-
- /**
- * Current transmit handle.
- */
- struct GNUNET_CLIENT_TransmitHandle *th;
-
- /**
- * Size of the message
- */
- uint16_t message_size;
-
- /**
- * Message to be sent to the scalarproduct service
- */
- struct GNUNET_SCALARPRODUCT_client_request * msg;
-
- union
- {
- /**
- * Function to call after transmission of the request.
+ * Function to call after transmission of the request (Bob).
*/
GNUNET_SCALARPRODUCT_ContinuationWithStatus cont_status;
/**
- * Function to call after transmission of the request.
+ * Function to call after transmission of the request (Alice).
*/
GNUNET_SCALARPRODUCT_DatumProcessor cont_datum;
- };
/**
- * Closure for 'cont'.
+ * Closure for @e cont_status or @e cont_datum.
*/
void *cont_cls;
/**
- * Response Processor for response from the service. This function calls the
- * continuation function provided by the client.
+ * API internal callback for results and failures to be forwarded to
+ * the client.
*/
GNUNET_SCALARPRODUCT_ResponseMessageHandler response_proc;
-};
-
-/**************************************************************
- *** Global Variables **********
- **************************************************************/
-/**
- * Head of the active sessions queue
- */
-static struct GNUNET_SCALARPRODUCT_ComputationHandle *head;
-/**
- * Tail of the active sessions queue
- */
-static struct GNUNET_SCALARPRODUCT_ComputationHandle *tail;
-/**************************************************************
- *** Function Declarations **********
- **************************************************************/
-
-void
-GNUNET_SCALARPRODUCT_cancel (struct GNUNET_SCALARPRODUCT_ComputationHandle * h);
+ /**
+ * The shared session key identifying this computation
+ */
+ struct GNUNET_HashCode key;
-/**************************************************************
- *** Static Function Declarations **********
- **************************************************************/
+};
/**
- * Handles the RESULT received in reply of prepare_response from the
- * service
- *
- * @param cls Handle to the Master Context
- * @param msg Pointer to the response received
+ * Called when a response is received from the service. Perform basic
+ * check that the message is well-formed.
+ *
+ * @param cls Pointer to the Master Context
+ * @param message Pointer to the data received in response
+ * @return #GNUNET_OK if @a message is well-formed
*/
-static void
-process_status_message (void *cls,
- const struct GNUNET_MessageHeader *msg,
- enum GNUNET_SCALARPRODUCT_ResponseStatus status)
+static int
+check_response (void *cls,
+ const struct ClientResponseMessage *message)
{
- struct GNUNET_SCALARPRODUCT_ComputationHandle *qe = cls;
-
- qe->cont_status (qe->cont_cls, status);
+ if (ntohs (message->header.size) !=
+ ntohl (message->product_length) + sizeof (struct ClientResponseMessage))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
}
/**
- * Handles the RESULT received in reply of prepare_response from the
- * service
- *
- * @param cls Handle to the Master Context
- * @param msg Pointer to the response received
+ * Handles the STATUS received from the service for a response, does
+ * not contain a payload. Called when we participate as "Bob" via
+ * #GNUNET_SCALARPRODUCT_accept_computation().
+ *
+ * @param h our Handle
+ * @param msg the response received
+ * @param status the condition the request was terminated with (eg: disconnect)
*/
static void
-process_result_message (void *cls,
- const struct GNUNET_MessageHeader *msg,
+process_status_message (struct GNUNET_SCALARPRODUCT_ComputationHandle *h,
+ const struct ClientResponseMessage *msg,
enum GNUNET_SCALARPRODUCT_ResponseStatus status)
{
- struct GNUNET_SCALARPRODUCT_ComputationHandle *qe = cls;
- const struct GNUNET_SCALARPRODUCT_client_response *message =
- (const struct GNUNET_SCALARPRODUCT_client_response *) msg;
- gcry_mpi_t result = NULL;
- gcry_error_t rc;
-
- if (GNUNET_SCALARPRODUCT_Status_Success == status)
- {
- size_t product_len = ntohl (message->product_length);
- result = gcry_mpi_new (0);
-
- if (0 < product_len)
- {
- gcry_mpi_t num;
- size_t read = 0;
-
- if (0 != (rc = gcry_mpi_scan (&num, GCRYMPI_FMT_STD, &message[1], product_len, &read)))
- {
- LOG_GCRY(GNUNET_ERROR_TYPE_ERROR, "gcry_mpi_scan", rc);
- gcry_mpi_release (result);
- result = NULL;
- status = GNUNET_SCALARPRODUCT_Status_InvalidResponse;
- }
- else
- {
- if (0 < message->range)
- gcry_mpi_add (result, result, num);
- else if (0 > message->range)
- gcry_mpi_sub (result, result, num);
- gcry_mpi_release (num);
- }
- }
- }
- qe->cont_datum (qe->cont_cls, status, result);
+ if (NULL != h->cont_status)
+ h->cont_status (h->cont_cls,
+ status);
+ GNUNET_SCALARPRODUCT_cancel (h);
}
/**
- * Called when a response is received from the service. After basic check
- * handler in qe->response_proc is called. This functions handles the response
- * to the client which used the API.
- *
+ * Called when a response is received from the service. After basic
+ * check, the handler in `h->response_proc` is called. This functions
+ * handles the response to the client which used the API.
+ *
* @param cls Pointer to the Master Context
* @param msg Pointer to the data received in response
*/
static void
-receive_cb (void *cls, const struct GNUNET_MessageHeader *msg)
+handle_response (void *cls,
+ const struct ClientResponseMessage *message)
{
- struct GNUNET_SCALARPRODUCT_ComputationHandle *qe = cls;
- const struct GNUNET_SCALARPRODUCT_client_response *message =
- (const struct GNUNET_SCALARPRODUCT_client_response *) msg;
- enum GNUNET_SCALARPRODUCT_ResponseStatus status = GNUNET_SCALARPRODUCT_Status_InvalidResponse;
-
- if (NULL == msg)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "Disconnected by Service.\n");
- status = GNUNET_SCALARPRODUCT_Status_ServiceDisconnected;
- }
- else if (GNUNET_MESSAGE_TYPE_SCALARPRODUCT_SERVICE_TO_CLIENT != ntohs (msg->type))
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "Invalid message type received\n");
- }
- else if (0 < ntohl (message->product_length) || (0 == message->range))
- {
- // response for the responder client, successful
- GNUNET_STATISTICS_update (qe->stats,
- gettext_noop ("# SUC responder result messages received"), 1,
- GNUNET_NO);
+ struct GNUNET_SCALARPRODUCT_ComputationHandle *h = cls;
+ enum GNUNET_SCALARPRODUCT_ResponseStatus status;
- status = GNUNET_SCALARPRODUCT_Status_Success;
- }
-
- if (qe->cont_datum != NULL)
- qe->response_proc (qe, msg, status);
-
- GNUNET_CONTAINER_DLL_remove (head, tail, qe);
- GNUNET_free (qe);
+ status = (enum GNUNET_SCALARPRODUCT_ResponseStatus) ntohl (message->status);
+ h->response_proc (h,
+ message,
+ status);
}
/**
- * Transmits the request to the VectorProduct Sevice
- *
- * @param cls Closure
- * @param size Size of the buffer
- * @param buf Pointer to the buffer
- *
- * @return Size of the message sent
+ * Check if the keys for all given elements are unique.
+ *
+ * @param elements elements to check
+ * @param element_count size of the @a elements array
+ * @return #GNUNET_OK if all keys are unique
*/
-static size_t
-transmit_request (void *cls, size_t size,
- void *buf)
+static int
+check_unique (const struct GNUNET_SCALARPRODUCT_Element *elements,
+ uint32_t element_count)
{
- struct GNUNET_SCALARPRODUCT_ComputationHandle *qe = cls;
-
- if (NULL == buf)
+ struct GNUNET_CONTAINER_MultiHashMap *map;
+ uint32_t i;
+ int ok;
+
+ ok = GNUNET_OK;
+ map = GNUNET_CONTAINER_multihashmap_create (2 * element_count,
+ GNUNET_YES);
+ for (i=0;i<element_count;i++)
+ if (GNUNET_OK !=
+ GNUNET_CONTAINER_multihashmap_put (map,
+ &elements[i].key,
+ map,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY))
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to transmit request to SCALARPRODUCT.\n");
- GNUNET_STATISTICS_update (qe->stats,
- gettext_noop ("# transmission request failures"),
- 1, GNUNET_NO);
-
- // notify caller about the error, done here.
- if (qe->cont_datum != NULL)
- qe->response_proc (qe, NULL, GNUNET_SCALARPRODUCT_Status_Failure);
-
- GNUNET_SCALARPRODUCT_cancel (cls);
- return 0;
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Keys given to SCALARPRODUCT not unique!\n"));
+ ok = GNUNET_SYSERR;
}
- memcpy (buf, qe->msg, size);
+ GNUNET_CONTAINER_multihashmap_destroy (map);
+ return ok;
+}
- GNUNET_free (qe->msg);
- qe->msg = NULL;
- qe->th = NULL;
- GNUNET_CLIENT_receive (qe->client, &receive_cb, qe,
- GNUNET_TIME_UNIT_FOREVER_REL);
+/**
+ * We encountered an error communicating with the set service while
+ * performing a set operation. Report to the application.
+ *
+ * @param cls the `struct GNUNET_SCALARPRODUCT_ComputationHandle`
+ * @param error error code
+ */
+static void
+mq_error_handler (void *cls,
+ enum GNUNET_MQ_Error error)
+{
+ struct GNUNET_SCALARPRODUCT_ComputationHandle *h = cls;
-#if INSANE_STATISTICS
- GNUNET_STATISTICS_update (qe->stats,
- gettext_noop ("# bytes sent to scalarproduct"), 1,
- GNUNET_NO);
-#endif
- return size;
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Disconnected from SCALARPRODUCT service.\n");
+ h->response_proc (h,
+ NULL,
+ GNUNET_SCALARPRODUCT_STATUS_DISCONNECTED);
}
-/**************************************************************
- *** API **********
- **************************************************************/
-
-
/**
- * Used by Bob's client to cooperate with Alice,
- *
- * @param h handle to the master context
- * @param key Session key - unique to the requesting client
+ * Used by Bob's client to cooperate with Alice,
+ *
+ * @param cfg the gnunet configuration handle
+ * @param key Session key unique to the requesting client
* @param elements Array of elements of the vector
- * @param element_count Number of elements in the vector
+ * @param element_count Number of elements in the @a elements vector
* @param cont Callback function
- * @param cont_cls Closure for the callback function
+ * @param cont_cls Closure for @a cont
+ * @return a new handle for this computation
*/
struct GNUNET_SCALARPRODUCT_ComputationHandle *
-GNUNET_SCALARPRODUCT_response (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const struct GNUNET_HashCode * key,
- const int32_t * elements,
- uint32_t element_count,
- GNUNET_SCALARPRODUCT_ContinuationWithStatus cont,
- void *cont_cls)
+GNUNET_SCALARPRODUCT_accept_computation (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const struct GNUNET_HashCode *session_key,
+ const struct GNUNET_SCALARPRODUCT_Element *elements,
+ uint32_t element_count,
+ GNUNET_SCALARPRODUCT_ContinuationWithStatus cont,
+ void *cont_cls)
{
- struct GNUNET_SCALARPRODUCT_ComputationHandle *h;
- struct GNUNET_SCALARPRODUCT_client_request *msg;
- int32_t * vector;
- uint16_t size;
- uint64_t i;
-
- GNUNET_assert (GNUNET_SERVER_MAX_MESSAGE_SIZE >= sizeof (struct GNUNET_SCALARPRODUCT_client_request)
- + element_count * sizeof (int32_t));
- h = GNUNET_new (struct GNUNET_SCALARPRODUCT_ComputationHandle);
- h->client = GNUNET_CLIENT_connect ("scalarproduct", cfg);
- if (!h->client)
- {
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to connect to the scalarproduct service\n"));
- GNUNET_free (h);
- return NULL;
- }
- h->stats = GNUNET_STATISTICS_create ("scalarproduct-api", cfg);
- if (!h->stats)
- {
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to send a message to the statistics service\n"));
- GNUNET_CLIENT_disconnect (h->client);
- GNUNET_free (h);
- return NULL;
- }
-
- size = sizeof (struct GNUNET_SCALARPRODUCT_client_request) + element_count * sizeof (int32_t);
-
+ struct GNUNET_SCALARPRODUCT_ComputationHandle *h
+ = GNUNET_new (struct GNUNET_SCALARPRODUCT_ComputationHandle);
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_var_size (response,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_RESULT,
+ struct ClientResponseMessage,
+ h),
+ GNUNET_MQ_handler_end ()
+ };
+ struct GNUNET_MQ_Envelope *env;
+ struct BobComputationMessage *msg;
+ struct ComputationBobCryptodataMultipartMessage *mmsg;
+ uint32_t size;
+ uint16_t possible;
+ uint16_t todo;
+ uint32_t element_count_transfered;
+
+
+ if (GNUNET_SYSERR == check_unique (elements,
+ element_count))
+ return NULL;
h->cont_status = cont;
h->cont_cls = cont_cls;
h->response_proc = &process_status_message;
h->cfg = cfg;
- memcpy (&h->key, key, sizeof (struct GNUNET_HashCode));
-
- msg = (struct GNUNET_SCALARPRODUCT_client_request*) GNUNET_malloc (size);
- h->msg = msg;
- msg->header.size = htons (size);
- msg->header.type = htons (GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_BOB);
- msg->element_count = htonl (element_count);
-
- vector = (int32_t*) & msg[1];
- // copy each element over to the message
- for (i = 0; i < element_count; i++)
- vector[i] = htonl (elements[i]);
-
- memcpy (&msg->key, key, sizeof (struct GNUNET_HashCode));
-
- h->th = GNUNET_CLIENT_notify_transmit_ready (h->client, size,
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_YES, // retry is OK in the initial stage
- &transmit_request, h);
- if (!h->th)
+ h->key = *session_key;
+ h->mq = GNUNET_CLIENT_connect (cfg,
+ "scalarproduct-bob",
+ handlers,
+ &mq_error_handler,
+ h);
+ if (NULL == h->mq)
+ {
+ /* scalarproduct configuration error */
+ GNUNET_break (0);
+ GNUNET_free (h);
+ return NULL;
+ }
+ possible = (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1 - sizeof (struct BobComputationMessage))
+ / sizeof (struct GNUNET_SCALARPRODUCT_Element);
+ todo = GNUNET_MIN (possible,
+ element_count);
+ size = todo * sizeof (struct GNUNET_SCALARPRODUCT_Element);
+ env = GNUNET_MQ_msg_extra (msg,
+ size,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_BOB);
+ msg->element_count_total = htonl (element_count);
+ msg->element_count_contained = htonl (todo);
+ msg->session_key = *session_key;
+ GNUNET_memcpy (&msg[1],
+ elements,
+ size);
+ element_count_transfered = todo;
+ GNUNET_MQ_send (h->mq,
+ env);
+ possible = (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1 - sizeof (*mmsg))
+ / sizeof (struct GNUNET_SCALARPRODUCT_Element);
+ while (element_count_transfered < element_count)
+ {
+ todo = GNUNET_MIN (possible,
+ element_count - element_count_transfered);
+ size = todo * sizeof (struct GNUNET_SCALARPRODUCT_Element);
+ env = GNUNET_MQ_msg_extra (mmsg,
+ size,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_MULTIPART_BOB);
+ mmsg->element_count_contained = htonl (todo);
+ GNUNET_memcpy (&mmsg[1],
+ &elements[element_count_transfered],
+ size);
+ element_count_transfered += todo;
+ GNUNET_MQ_send (h->mq,
+ env);
+ }
+ return h;
+}
+
+
+/**
+ * Handles the RESULT received from the service for a request, should
+ * contain a result MPI value. Called when we participate as "Alice" via
+ * #GNUNET_SCALARPRODUCT_start_computation().
+ *
+ * @param h our Handle
+ * @param msg Pointer to the response received
+ * @param status the condition the request was terminated with (eg: disconnect)
+ */
+static void
+process_result_message (struct GNUNET_SCALARPRODUCT_ComputationHandle *h,
+ const struct ClientResponseMessage *msg,
+ enum GNUNET_SCALARPRODUCT_ResponseStatus status)
+{
+ uint32_t product_len;
+ gcry_mpi_t result = NULL;
+ gcry_error_t rc;
+ gcry_mpi_t num;
+ size_t rsize;
+
+ if (GNUNET_SCALARPRODUCT_STATUS_SUCCESS == status)
+ {
+ result = gcry_mpi_new (0);
+
+ product_len = ntohl (msg->product_length);
+ if (0 < product_len)
{
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to send a message to the scalarproduct service\n"));
- GNUNET_STATISTICS_destroy (h->stats, GNUNET_YES);
- GNUNET_CLIENT_disconnect (h->client);
- GNUNET_free (h->msg);
- GNUNET_free (h);
- return NULL;
+ rsize = 0;
+ if (0 != (rc = gcry_mpi_scan (&num, GCRYMPI_FMT_STD,
+ &msg[1],
+ product_len,
+ &rsize)))
+ {
+ LOG_GCRY (GNUNET_ERROR_TYPE_ERROR,
+ "gcry_mpi_scan",
+ rc);
+ gcry_mpi_release (result);
+ result = NULL;
+ status = GNUNET_SCALARPRODUCT_STATUS_INVALID_RESPONSE;
+ }
+ else
+ {
+ if (0 < (int32_t) ntohl (msg->range))
+ gcry_mpi_add (result, result, num);
+ else
+ gcry_mpi_sub (result, result, num);
+ gcry_mpi_release (num);
+ }
}
- GNUNET_CONTAINER_DLL_insert (head, tail, h);
- return h;
+ }
+ if (NULL != h->cont_datum)
+ h->cont_datum (h->cont_cls,
+ status,
+ result);
+ if (NULL != result)
+ gcry_mpi_release (result);
+ GNUNET_SCALARPRODUCT_cancel (h);
}
/**
* Request by Alice's client for computing a scalar product
- *
- * @param h handle to the master context
- * @param key Session key - unique to the requesting client
+ *
+ * @param cfg the gnunet configuration handle
+ * @param session_key Session key should be unique to the requesting client
* @param peer PeerID of the other peer
* @param elements Array of elements of the vector
- * @param element_count Number of elements in the vector
- * @param mask Array of the mask
- * @param mask_bytes number of bytes in the mask
+ * @param element_count Number of elements in the @a elements vector
* @param cont Callback function
- * @param cont_cls Closure for the callback function
+ * @param cont_cls Closure for @a cont
+ * @return a new handle for this computation
*/
struct GNUNET_SCALARPRODUCT_ComputationHandle *
-GNUNET_SCALARPRODUCT_request (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const struct GNUNET_HashCode * key,
- const struct GNUNET_PeerIdentity *peer,
- const int32_t * elements,
- uint32_t element_count,
- const unsigned char * mask,
- uint32_t mask_bytes,
- GNUNET_SCALARPRODUCT_DatumProcessor cont,
- void *cont_cls)
+GNUNET_SCALARPRODUCT_start_computation (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const struct GNUNET_HashCode *session_key,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_SCALARPRODUCT_Element *elements,
+ uint32_t element_count,
+ GNUNET_SCALARPRODUCT_DatumProcessor cont,
+ void *cont_cls)
{
- struct GNUNET_SCALARPRODUCT_ComputationHandle *h;
- struct GNUNET_SCALARPRODUCT_client_request *msg;
- int32_t * vector;
- uint16_t size;
- uint64_t i;
-
- GNUNET_assert (GNUNET_SERVER_MAX_MESSAGE_SIZE >= sizeof (struct GNUNET_SCALARPRODUCT_client_request)
- +element_count * sizeof (int32_t)
- + mask_bytes);
-
- h = GNUNET_new (struct GNUNET_SCALARPRODUCT_ComputationHandle);
- h->client = GNUNET_CLIENT_connect ("scalarproduct", cfg);
- if (!h->client)
- {
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to connect to the scalarproduct service\n"));
- GNUNET_free (h);
- return NULL;
- }
- h->stats = GNUNET_STATISTICS_create ("scalarproduct-api", cfg);
- if (!h->stats)
- {
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to send a message to the statistics service\n"));
- GNUNET_CLIENT_disconnect (h->client);
- GNUNET_free (h);
- return NULL;
- }
-
- size = sizeof (struct GNUNET_SCALARPRODUCT_client_request) + element_count * sizeof (int32_t) + mask_bytes;
-
+ struct GNUNET_SCALARPRODUCT_ComputationHandle *h
+ = GNUNET_new (struct GNUNET_SCALARPRODUCT_ComputationHandle);
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_var_size (response,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_RESULT,
+ struct ClientResponseMessage,
+ h),
+ GNUNET_MQ_handler_end ()
+ };
+ struct GNUNET_MQ_Envelope *env;
+ struct AliceComputationMessage *msg;
+ struct ComputationBobCryptodataMultipartMessage *mmsg;
+ uint32_t size;
+ uint16_t possible;
+ uint16_t todo;
+ uint32_t element_count_transfered;
+
+ if (GNUNET_SYSERR == check_unique (elements,
+ element_count))
+ return NULL;
+ h->mq = GNUNET_CLIENT_connect (cfg,
+ "scalarproduct-alice",
+ handlers,
+ &mq_error_handler,
+ h);
+ if (NULL == h->mq)
+ {
+ /* missconfigured scalarproduct service */
+ GNUNET_break (0);
+ GNUNET_free (h);
+ return NULL;
+ }
h->cont_datum = cont;
h->cont_cls = cont_cls;
h->response_proc = &process_result_message;
h->cfg = cfg;
- memcpy (&h->key, key, sizeof (struct GNUNET_HashCode));
-
- msg = (struct GNUNET_SCALARPRODUCT_client_request*) GNUNET_malloc (size);
- h->msg = msg;
- msg->header.size = htons (size);
- msg->header.type = htons (GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_ALICE);
- msg->element_count = htonl (element_count);
- msg->mask_length = htonl (mask_bytes);
-
- vector = (int32_t*) & msg[1];
- // copy each element over to the message
- for (i = 0; i < element_count; i++)
- vector[i] = htonl (elements[i]);
-
- memcpy (&msg->peer, peer, sizeof (struct GNUNET_PeerIdentity));
- memcpy (&msg->key, key, sizeof (struct GNUNET_HashCode));
- memcpy (&vector[element_count], mask, mask_bytes);
-
- h->th = GNUNET_CLIENT_notify_transmit_ready (h->client, size,
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_YES, // retry is OK in the initial stage
- &transmit_request, h);
- if (!h->th)
- {
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to send a message to the scalarproduct service\n"));
- GNUNET_STATISTICS_destroy (h->stats, GNUNET_YES);
- GNUNET_CLIENT_disconnect (h->client);
- GNUNET_free (h->msg);
- GNUNET_free (h);
- return NULL;
- }
- GNUNET_CONTAINER_DLL_insert (head, tail, h);
+ h->key = *session_key;
+
+ possible = (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1 - sizeof (struct AliceComputationMessage))
+ / sizeof (struct GNUNET_SCALARPRODUCT_Element);
+ todo = GNUNET_MIN (possible,
+ element_count);
+ size = todo * sizeof (struct GNUNET_SCALARPRODUCT_Element);
+ env = GNUNET_MQ_msg_extra (msg,
+ size,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_ALICE);
+ msg->element_count_total = htonl (element_count);
+ msg->element_count_contained = htonl (todo);
+ msg->reserved = htonl (0);
+ msg->peer = *peer;
+ msg->session_key = *session_key;
+ GNUNET_memcpy (&msg[1],
+ elements,
+ size);
+ GNUNET_MQ_send (h->mq,
+ env);
+ element_count_transfered = todo;
+ possible = (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1 - sizeof (*mmsg))
+ / sizeof (struct GNUNET_SCALARPRODUCT_Element);
+ while (element_count_transfered < element_count)
+ {
+ todo = GNUNET_MIN (possible,
+ element_count - element_count_transfered);
+ size = todo * sizeof (struct GNUNET_SCALARPRODUCT_Element);
+ env = GNUNET_MQ_msg_extra (mmsg,
+ size,
+ GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_MULTIPART_ALICE);
+ mmsg->element_count_contained = htonl (todo);
+ GNUNET_memcpy (&mmsg[1],
+ &elements[element_count_transfered],
+ size);
+ element_count_transfered += todo;
+ GNUNET_MQ_send (h->mq,
+ env);
+ }
return h;
}
/**
- * Disconnect from the scalarproduct service.
- *
- * @param h a computation handle to cancel
+ * Cancel an ongoing computation or revoke our collaboration offer.
+ * Closes the connection to the service
+ *
+ * @param h computation handle to terminate
*/
void
-GNUNET_SCALARPRODUCT_cancel (struct GNUNET_SCALARPRODUCT_ComputationHandle * h)
+GNUNET_SCALARPRODUCT_cancel (struct GNUNET_SCALARPRODUCT_ComputationHandle *h)
{
- struct GNUNET_SCALARPRODUCT_ComputationHandle * qe;
-
- for (qe = head; head != NULL; qe = head)
- {
- if (qe == h)
- {
- GNUNET_CONTAINER_DLL_remove (head, tail, qe);
- if (NULL != qe->th)
- GNUNET_CLIENT_notify_transmit_ready_cancel (qe->th);
- GNUNET_CLIENT_disconnect (qe->client);
- GNUNET_STATISTICS_destroy (qe->stats, GNUNET_YES);
- GNUNET_free_non_null (qe->msg);
- GNUNET_free (qe);
- break;
- }
- }
+ if (NULL != h->mq)
+ {
+ GNUNET_MQ_destroy (h->mq);
+ h->mq = NULL;
+ }
+ GNUNET_free (h);
}
-/**
- * Cancel ALL our ongoing scalar product computations and collaboration offers.
- * Closes ALL connections to the service
- */
-void
-GNUNET_SCALARPRODUCT_disconnect ()
-{
- struct GNUNET_SCALARPRODUCT_ComputationHandle * qe;
- LOG (GNUNET_ERROR_TYPE_INFO, "Disconnecting from VectorProduct\n");
- for (qe = head; head != NULL; qe = head)
- {
- GNUNET_CONTAINER_DLL_remove (head, tail, qe);
- if (NULL != qe->th)
- GNUNET_CLIENT_notify_transmit_ready_cancel (qe->th);
- GNUNET_CLIENT_disconnect (qe->client);
- GNUNET_STATISTICS_destroy (qe->stats, GNUNET_YES);
- GNUNET_free_non_null (qe->msg);
- GNUNET_free (qe);
- }
-}
-/* end of ext_api.c */
+/* end of scalarproduct_api.c */
projects / oweals / gnunet.git / blobdiff