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Data Structures | Macros | Typedefs | Enumerations | Functions | Variables
Scalar Product service

Data Structures

struct  GNUNET_SCALARPRODUCT_Element
 An element key-value pair for scalarproduct. More...
 

Macros

#define GCRYPT_NO_DEPRECATED
 
#define GNUNET_SCALARPRODUCT_VERSION   0x00000044
 Version of the scalarproduct API. More...
 

Typedefs

typedef void(* GNUNET_SCALARPRODUCT_DatumProcessor) (void *cls, enum GNUNET_SCALARPRODUCT_ResponseStatus status, gcry_mpi_t result)
 Process a datum that was stored in the scalarproduct. More...
 

Enumerations

enum  GNUNET_SCALARPRODUCT_ResponseStatus {
  GNUNET_SCALARPRODUCT_STATUS_INIT = 0, GNUNET_SCALARPRODUCT_STATUS_ACTIVE = 1, GNUNET_SCALARPRODUCT_STATUS_SUCCESS, GNUNET_SCALARPRODUCT_STATUS_FAILURE,
  GNUNET_SCALARPRODUCT_STATUS_INVALID_RESPONSE, GNUNET_SCALARPRODUCT_STATUS_DISCONNECTED
}
 Result status values for the computation. More...
 

Functions

struct GNUNET_SCALARPRODUCT_ComputationHandleGNUNET_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)
 Request by Alice's client for computing a scalar product. More...
 
struct GNUNET_SCALARPRODUCT_ComputationHandleGNUNET_SCALARPRODUCT_accept_computation (const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_HashCode *key, const struct GNUNET_SCALARPRODUCT_Element *elements, uint32_t element_count, GNUNET_SCALARPRODUCT_ContinuationWithStatus cont, void *cont_cls)
 Used by Bob's client to cooperate with Alice,. More...
 
void GNUNET_SCALARPRODUCT_cancel (struct GNUNET_SCALARPRODUCT_ComputationHandle *h)
 Cancel an ongoing computation or revoke our collaboration offer. More...
 

Variables

GNUNET_NETWORK_STRUCT_END typedef void(* GNUNET_SCALARPRODUCT_ContinuationWithStatus )(void *cls, enum GNUNET_SCALARPRODUCT_ResponseStatus status)
 Continuation called to notify client about result of the operation. More...
 

Detailed Description

Macro Definition Documentation

◆ GCRYPT_NO_DEPRECATED

#define GCRYPT_NO_DEPRECATED

Definition at line 34 of file gnunet_scalarproduct_service.h.

◆ GNUNET_SCALARPRODUCT_VERSION

#define GNUNET_SCALARPRODUCT_VERSION   0x00000044

Version of the scalarproduct API.

Definition at line 47 of file gnunet_scalarproduct_service.h.

Typedef Documentation

◆ GNUNET_SCALARPRODUCT_DatumProcessor

typedef void(* GNUNET_SCALARPRODUCT_DatumProcessor) (void *cls, enum GNUNET_SCALARPRODUCT_ResponseStatus status, gcry_mpi_t result)

Process a datum that was stored in the scalarproduct.

Parameters
clsclosure
statusStatus of the request
resultresult of the computation

Definition at line 134 of file gnunet_scalarproduct_service.h.

Enumeration Type Documentation

◆ GNUNET_SCALARPRODUCT_ResponseStatus

Result status values for the computation.

Enumerator
GNUNET_SCALARPRODUCT_STATUS_INIT 

Operation is still active (never returned, used internally).

GNUNET_SCALARPRODUCT_STATUS_ACTIVE 

Operation is still active (never returned, used internally).

GNUNET_SCALARPRODUCT_STATUS_SUCCESS 

The computation was successful.

GNUNET_SCALARPRODUCT_STATUS_FAILURE 

We encountered some error.

GNUNET_SCALARPRODUCT_STATUS_INVALID_RESPONSE 

We got an invalid response.

GNUNET_SCALARPRODUCT_STATUS_DISCONNECTED 

We got disconnected from the SCALARPRODUCT service.

Definition at line 52 of file gnunet_scalarproduct_service.h.

53 {
54 
59 
64 
69 
74 
79 
84 };
Operation is still active (never returned, used internally).
Operation is still active (never returned, used internally).
We got disconnected from the SCALARPRODUCT service.

Function Documentation

◆ GNUNET_SCALARPRODUCT_start_computation()

struct GNUNET_SCALARPRODUCT_ComputationHandle* 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 
)

Request by Alice's client for computing a scalar product.

Parameters
cfgthe gnunet configuration handle
session_keySession key should be unique to the requesting client
peerPeerID of the other peer
elementsArray of elements of the vector
element_countNumber of elements in the elements vector
contCallback function
cont_clsClosure for the cont callback function
Returns
a new handle for this computation
Parameters
cfgthe gnunet configuration handle
session_keySession key should be unique to the requesting client
peerPeerID of the other peer
elementsArray of elements of the vector
element_countNumber of elements in the elements vector
contCallback function
cont_clsClosure for cont
Returns
a new handle for this computation

Definition at line 383 of file scalarproduct_api.c.

References GNUNET_SCALARPRODUCT_ComputationHandle::cfg, check_unique(), GNUNET_SCALARPRODUCT_ComputationHandle::cont_cls, GNUNET_SCALARPRODUCT_ComputationHandle::cont_datum, AliceComputationMessage::element_count_contained, ComputationBobCryptodataMultipartMessage::element_count_contained, AliceComputationMessage::element_count_total, env, GNUNET_break, GNUNET_CLIENT_connect(), GNUNET_free, GNUNET_MAX_MESSAGE_SIZE, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_MULTIPART_ALICE, GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_ALICE, GNUNET_MESSAGE_TYPE_SCALARPRODUCT_RESULT, GNUNET_MIN, GNUNET_MQ_handler_end, GNUNET_MQ_hd_var_size, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_new, GNUNET_SYSERR, h, GNUNET_SCALARPRODUCT_ComputationHandle::key, GNUNET_SCALARPRODUCT_ComputationHandle::mq, mq_error_handler(), msg, AliceComputationMessage::peer, peer, process_result_message(), AliceComputationMessage::reserved, response, GNUNET_SCALARPRODUCT_ComputationHandle::response_proc, AliceComputationMessage::session_key, session_key, and size.

Referenced by run().

390 {
396  struct ClientResponseMessage,
397  h),
399  };
400  struct GNUNET_MQ_Envelope *env;
403  uint32_t size;
404  uint16_t possible;
405  uint16_t todo;
406  uint32_t element_count_transfered;
407 
408  if (GNUNET_SYSERR == check_unique (elements,
409  element_count))
410  return NULL;
411  h->mq = GNUNET_CLIENT_connect (cfg,
412  "scalarproduct-alice",
413  handlers,
415  h);
416  if (NULL == h->mq)
417  {
418  /* missconfigured scalarproduct service */
419  GNUNET_break (0);
420  GNUNET_free (h);
421  return NULL;
422  }
423  h->cont_datum = cont;
424  h->cont_cls = cont_cls;
426  h->cfg = cfg;
427  h->key = *session_key;
428 
429  possible = (GNUNET_MAX_MESSAGE_SIZE - 1 - sizeof (struct AliceComputationMessage))
430  / sizeof (struct GNUNET_SCALARPRODUCT_Element);
431  todo = GNUNET_MIN (possible,
432  element_count);
433  size = todo * sizeof (struct GNUNET_SCALARPRODUCT_Element);
434  env = GNUNET_MQ_msg_extra (msg,
435  size,
437  msg->element_count_total = htonl (element_count);
438  msg->element_count_contained = htonl (todo);
439  msg->reserved = htonl (0);
440  msg->peer = *peer;
441  msg->session_key = *session_key;
442  GNUNET_memcpy (&msg[1],
443  elements,
444  size);
445  GNUNET_MQ_send (h->mq,
446  env);
447  element_count_transfered = todo;
448  possible = (GNUNET_MAX_MESSAGE_SIZE - 1 - sizeof (*mmsg))
449  / sizeof (struct GNUNET_SCALARPRODUCT_Element);
450  while (element_count_transfered < element_count)
451  {
452  todo = GNUNET_MIN (possible,
453  element_count - element_count_transfered);
454  size = todo * sizeof (struct GNUNET_SCALARPRODUCT_Element);
455  env = GNUNET_MQ_msg_extra (mmsg,
456  size,
458  mmsg->element_count_contained = htonl (todo);
459  GNUNET_memcpy (&mmsg[1],
460  &elements[element_count_transfered],
461  size);
462  element_count_transfered += todo;
463  GNUNET_MQ_send (h->mq,
464  env);
465  }
466  return h;
467 }
A handle returned for each computation.
Message type passed from service client to finalize a session as requester or responder.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
#define GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_MULTIPART_ALICE
Client -> Alice multipart.
struct GNUNET_HashCode key
The shared session key identifying this computation.
struct GNUNET_MQ_Handle * GNUNET_CLIENT_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *service_name, const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_ErrorHandler error_handler, void *error_handler_cls)
Create a message queue to connect to a GNUnet service.
Definition: client.c:901
GNUNET_SCALARPRODUCT_DatumProcessor cont_datum
Function to call after transmission of the request (Alice).
static void process_result_message(struct GNUNET_SCALARPRODUCT_ComputationHandle *h, const struct ClientResponseMessage *msg, enum GNUNET_SCALARPRODUCT_ResponseStatus status)
Handles the RESULT received from the service for a request, should contain a result MPI value...
#define GNUNET_new(type)
Allocate a struct or union of the given type.
uint32_t reserved
Always zero.
Definition: scalarproduct.h:63
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
Message type passed from client to service to initiate a request or responder role.
Definition: scalarproduct.h:42
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
struct GNUNET_HashCode session_key
the transaction/session key used to identify a session
Definition: scalarproduct.h:68
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
#define GNUNET_memcpy(dst, src, n)
static struct GNUNET_HashCode session_key
the session key identifying this computation
static struct GNUNET_CADET_MessageHandler handlers[]
Handlers, for diverse services.
struct GNUNET_PeerIdentity peer
the identity of a remote peer we want to communicate with
Definition: scalarproduct.h:73
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_MIN(a, b)
Definition: gnunet_common.h:83
uint32_t element_count_total
how many elements the vector in payload contains
Definition: scalarproduct.h:53
static void mq_error_handler(void *cls, enum GNUNET_MQ_Error error)
We encountered an error communicating with the set service while performing a set operation...
Message handler for a specific message type.
static struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
Definition: gnunet-arm.c:104
#define GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_ALICE
Client -> Alice.
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
static unsigned int size
Size of the "table".
Definition: peer.c:67
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
uint32_t element_count_contained
contained elements the vector in payload contains
Definition: scalarproduct.h:58
static struct MHD_Response * response
Our canonical response.
uint32_t element_count_contained
contained elements the vector in payload contains
multipart messages following struct ComputationMessage
void * cont_cls
Closure for cont_status or cont_datum.
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:353
const struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
GNUNET_SCALARPRODUCT_ResponseMessageHandler response_proc
API internal callback for results and failures to be forwarded to the client.
struct GNUNET_MQ_Handle * mq
Current connection to the scalarproduct service.
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
static int check_unique(const struct GNUNET_SCALARPRODUCT_Element *elements, uint32_t element_count)
Check if the keys for all given elements are unique.
An element key-value pair for scalarproduct.
#define GNUNET_MESSAGE_TYPE_SCALARPRODUCT_RESULT
Alice/Bob -> Client Result.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_SCALARPRODUCT_accept_computation()

struct GNUNET_SCALARPRODUCT_ComputationHandle* 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 
)

Used by Bob's client to cooperate with Alice,.

Parameters
cfgthe gnunet configuration handle
session_keySession key unique to the requesting client
elementsArray of elements of the vector
element_countNumber of elements in the elements vector
contCallback function
cont_clsClosure for the cont callback function
Returns
a new handle for this computation
Parameters
cfgthe gnunet configuration handle
keySession key unique to the requesting client
elementsArray of elements of the vector
element_countNumber of elements in the elements vector
contCallback function
cont_clsClosure for cont
Returns
a new handle for this computation

Definition at line 226 of file scalarproduct_api.c.

References GNUNET_SCALARPRODUCT_ComputationHandle::cfg, check_unique(), GNUNET_SCALARPRODUCT_ComputationHandle::cont_cls, GNUNET_SCALARPRODUCT_ComputationHandle::cont_status, BobComputationMessage::element_count_contained, ComputationBobCryptodataMultipartMessage::element_count_contained, BobComputationMessage::element_count_total, env, GNUNET_break, GNUNET_CLIENT_connect(), GNUNET_free, GNUNET_MAX_MESSAGE_SIZE, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_MULTIPART_BOB, GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_BOB, GNUNET_MESSAGE_TYPE_SCALARPRODUCT_RESULT, GNUNET_MIN, GNUNET_MQ_handler_end, GNUNET_MQ_hd_var_size, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_new, GNUNET_SYSERR, h, GNUNET_SCALARPRODUCT_ComputationHandle::key, GNUNET_SCALARPRODUCT_ComputationHandle::mq, mq_error_handler(), msg, process_status_message(), response, GNUNET_SCALARPRODUCT_ComputationHandle::response_proc, BobComputationMessage::session_key, session_key, and size.

Referenced by run().

232 {
238  struct ClientResponseMessage,
239  h),
241  };
242  struct GNUNET_MQ_Envelope *env;
243  struct BobComputationMessage *msg;
245  uint32_t size;
246  uint16_t possible;
247  uint16_t todo;
248  uint32_t element_count_transfered;
249 
250 
251  if (GNUNET_SYSERR == check_unique (elements,
252  element_count))
253  return NULL;
254  h->cont_status = cont;
255  h->cont_cls = cont_cls;
257  h->cfg = cfg;
258  h->key = *session_key;
259  h->mq = GNUNET_CLIENT_connect (cfg,
260  "scalarproduct-bob",
261  handlers,
263  h);
264  if (NULL == h->mq)
265  {
266  /* scalarproduct configuration error */
267  GNUNET_break (0);
268  GNUNET_free (h);
269  return NULL;
270  }
271  possible = (GNUNET_MAX_MESSAGE_SIZE - 1 - sizeof (struct BobComputationMessage))
272  / sizeof (struct GNUNET_SCALARPRODUCT_Element);
273  todo = GNUNET_MIN (possible,
274  element_count);
275  size = todo * sizeof (struct GNUNET_SCALARPRODUCT_Element);
276  env = GNUNET_MQ_msg_extra (msg,
277  size,
279  msg->element_count_total = htonl (element_count);
280  msg->element_count_contained = htonl (todo);
281  msg->session_key = *session_key;
282  GNUNET_memcpy (&msg[1],
283  elements,
284  size);
285  element_count_transfered = todo;
286  GNUNET_MQ_send (h->mq,
287  env);
288  possible = (GNUNET_MAX_MESSAGE_SIZE - 1 - sizeof (*mmsg))
289  / sizeof (struct GNUNET_SCALARPRODUCT_Element);
290  while (element_count_transfered < element_count)
291  {
292  todo = GNUNET_MIN (possible,
293  element_count - element_count_transfered);
294  size = todo * sizeof (struct GNUNET_SCALARPRODUCT_Element);
295  env = GNUNET_MQ_msg_extra (mmsg,
296  size,
298  mmsg->element_count_contained = htonl (todo);
299  GNUNET_memcpy (&mmsg[1],
300  &elements[element_count_transfered],
301  size);
302  element_count_transfered += todo;
303  GNUNET_MQ_send (h->mq,
304  env);
305  }
306  return h;
307 }
A handle returned for each computation.
Message type passed from service client to finalize a session as requester or responder.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
struct GNUNET_HashCode key
The shared session key identifying this computation.
struct GNUNET_MQ_Handle * GNUNET_CLIENT_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *service_name, const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_ErrorHandler error_handler, void *error_handler_cls)
Create a message queue to connect to a GNUnet service.
Definition: client.c:901
uint32_t element_count_total
how many elements the vector in payload contains
Definition: scalarproduct.h:96
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#define GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_TO_BOB
Client -> Bob.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
#define GNUNET_memcpy(dst, src, n)
static struct GNUNET_HashCode session_key
the session key identifying this computation
static struct GNUNET_CADET_MessageHandler handlers[]
Handlers, for diverse services.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_MIN(a, b)
Definition: gnunet_common.h:83
static void process_status_message(struct GNUNET_SCALARPRODUCT_ComputationHandle *h, const struct ClientResponseMessage *msg, enum GNUNET_SCALARPRODUCT_ResponseStatus status)
Handles the STATUS received from the service for a response, does not contain a payload.
static void mq_error_handler(void *cls, enum GNUNET_MQ_Error error)
We encountered an error communicating with the set service while performing a set operation...
Message handler for a specific message type.
static struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
Definition: gnunet-arm.c:104
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
static unsigned int size
Size of the "table".
Definition: peer.c:67
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
GNUNET_SCALARPRODUCT_ContinuationWithStatus cont_status
Function to call after transmission of the request (Bob).
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
uint32_t element_count_contained
contained elements the vector in payload contains
#define GNUNET_MESSAGE_TYPE_SCALARPRODUCT_CLIENT_MULTIPART_BOB
Client -> Bob multipart.
static struct MHD_Response * response
Our canonical response.
uint32_t element_count_contained
contained elements the vector in payload contains
multipart messages following struct ComputationMessage
Message type passed from client to service to initiate a request or responder role.
Definition: scalarproduct.h:85
void * cont_cls
Closure for cont_status or cont_datum.
struct GNUNET_HashCode session_key
the transaction/session key used to identify a session
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:353
const struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
GNUNET_SCALARPRODUCT_ResponseMessageHandler response_proc
API internal callback for results and failures to be forwarded to the client.
struct GNUNET_MQ_Handle * mq
Current connection to the scalarproduct service.
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
static int check_unique(const struct GNUNET_SCALARPRODUCT_Element *elements, uint32_t element_count)
Check if the keys for all given elements are unique.
An element key-value pair for scalarproduct.
#define GNUNET_MESSAGE_TYPE_SCALARPRODUCT_RESULT
Alice/Bob -> Client Result.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_SCALARPRODUCT_cancel()

void GNUNET_SCALARPRODUCT_cancel ( struct GNUNET_SCALARPRODUCT_ComputationHandle h)

Cancel an ongoing computation or revoke our collaboration offer.

Closes the connection to the service

Parameters
hcomputation handle to terminate

Definition at line 477 of file scalarproduct_api.c.

References GNUNET_free, GNUNET_MQ_destroy(), and GNUNET_SCALARPRODUCT_ComputationHandle::mq.

Referenced by process_result_message(), process_status_message(), and shutdown_task().

478 {
479  if (NULL != h->mq)
480  {
481  GNUNET_MQ_destroy (h->mq);
482  h->mq = NULL;
483  }
484  GNUNET_free (h);
485 }
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:824
struct GNUNET_MQ_Handle * mq
Current connection to the scalarproduct service.
#define GNUNET_free(ptr)
Wrapper around free.
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Variable Documentation

◆ GNUNET_SCALARPRODUCT_ContinuationWithStatus

GNUNET_NETWORK_STRUCT_END typedef void(* GNUNET_SCALARPRODUCT_ContinuationWithStatus) (void *cls, enum GNUNET_SCALARPRODUCT_ResponseStatus status)

Continuation called to notify client about result of the operation.

Parameters
clsclosure
statusStatus of the request

Definition at line 122 of file gnunet_scalarproduct_service.h.