GNUnet  0.11.x
Data Structures | Macros | Functions
namestore_api.c File Reference

API to access the NAMESTORE service. More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_constants.h"
#include "gnunet_dnsparser_lib.h"
#include "gnunet_arm_service.h"
#include "gnunet_signatures.h"
#include "gnunet_gns_service.h"
#include "gnunet_namestore_service.h"
#include "namestore.h"
Include dependency graph for namestore_api.c:

Go to the source code of this file.

Data Structures

struct  GNUNET_NAMESTORE_QueueEntry
 An QueueEntry used to store information for a pending NAMESTORE record operation. More...
 
struct  GNUNET_NAMESTORE_ZoneIterator
 Handle for a zone iterator operation. More...
 
struct  GNUNET_NAMESTORE_Handle
 Connection to the NAMESTORE service. More...
 

Macros

#define LOG(kind, ...)   GNUNET_log_from (kind, "namestore-api", __VA_ARGS__)
 
#define NAMESTORE_DELAY_TOLERANCE   GNUNET_TIME_UNIT_MINUTES
 We grant the namestore up to 1 minute of latency, if it is slower than that, store queries will fail. More...
 

Functions

static void force_reconnect (struct GNUNET_NAMESTORE_Handle *h)
 Disconnect from service and then reconnect. More...
 
static struct GNUNET_NAMESTORE_QueueEntryfind_qe (struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
 Find the queue entry that matches the rid. More...
 
static struct GNUNET_NAMESTORE_ZoneIteratorfind_zi (struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
 Find the zone iteration entry that matches the rid. More...
 
static void free_qe (struct GNUNET_NAMESTORE_QueueEntry *qe)
 Free qe. More...
 
static void free_ze (struct GNUNET_NAMESTORE_ZoneIterator *ze)
 Free ze. More...
 
static int check_rd (size_t rd_len, const void *rd_buf, unsigned int rd_count)
 Check that rd_buf of lenght rd_len contains rd_count records. More...
 
static void handle_record_store_response (void *cls, const struct RecordStoreResponseMessage *msg)
 Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE. More...
 
static int check_lookup_result (void *cls, const struct LabelLookupResponseMessage *msg)
 Check validity of an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE. More...
 
static void handle_lookup_result (void *cls, const struct LabelLookupResponseMessage *msg)
 Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE. More...
 
static int check_record_result (void *cls, const struct RecordResultMessage *msg)
 Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT. More...
 
static void handle_record_result (void *cls, const struct RecordResultMessage *msg)
 Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT. More...
 
static void handle_record_result_end (void *cls, const struct GNUNET_NAMESTORE_Header *msg)
 Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT_END. More...
 
static int check_zone_to_name_response (void *cls, const struct ZoneToNameResponseMessage *msg)
 Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE. More...
 
static void handle_zone_to_name_response (void *cls, const struct ZoneToNameResponseMessage *msg)
 Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE. More...
 
static void mq_error_handler (void *cls, enum GNUNET_MQ_Error error)
 Generic error handler, called with the appropriate error code and the same closure specified at the creation of the message queue. More...
 
static void reconnect (struct GNUNET_NAMESTORE_Handle *h)
 Reconnect to namestore service. More...
 
static void reconnect_task (void *cls)
 Re-establish the connection to the service. More...
 
static uint32_t get_op_id (struct GNUNET_NAMESTORE_Handle *h)
 Get a fresh operation id to distinguish between namestore requests. More...
 
struct GNUNET_NAMESTORE_HandleGNUNET_NAMESTORE_connect (const struct GNUNET_CONFIGURATION_Handle *cfg)
 Initialize the connection with the NAMESTORE service. More...
 
void GNUNET_NAMESTORE_disconnect (struct GNUNET_NAMESTORE_Handle *h)
 Disconnect from the namestore service (and free associated resources). More...
 
static void warn_delay (void *cls)
 Task launched to warn the user that the namestore is excessively slow and that a query was thus dropped. More...
 
struct GNUNET_NAMESTORE_QueueEntryGNUNET_NAMESTORE_records_store (struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd, GNUNET_NAMESTORE_ContinuationWithStatus cont, void *cont_cls)
 Store an item in the namestore. More...
 
struct GNUNET_NAMESTORE_QueueEntryGNUNET_NAMESTORE_records_lookup (struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey, const char *label, GNUNET_SCHEDULER_TaskCallback error_cb, void *error_cb_cls, GNUNET_NAMESTORE_RecordMonitor rm, void *rm_cls)
 Lookup an item in the namestore. More...
 
struct GNUNET_NAMESTORE_QueueEntryGNUNET_NAMESTORE_zone_to_name (struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const struct GNUNET_CRYPTO_EcdsaPublicKey *value_zone, GNUNET_SCHEDULER_TaskCallback error_cb, void *error_cb_cls, GNUNET_NAMESTORE_RecordMonitor proc, void *proc_cls)
 Look for an existing PKEY delegation record for a given public key. More...
 
struct GNUNET_NAMESTORE_ZoneIteratorGNUNET_NAMESTORE_zone_iteration_start (struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, GNUNET_SCHEDULER_TaskCallback error_cb, void *error_cb_cls, GNUNET_NAMESTORE_RecordMonitor proc, void *proc_cls, GNUNET_SCHEDULER_TaskCallback finish_cb, void *finish_cb_cls)
 Starts a new zone iteration (used to periodically PUT all of our records into our DHT). More...
 
void GNUNET_NAMESTORE_zone_iterator_next (struct GNUNET_NAMESTORE_ZoneIterator *it, uint64_t limit)
 Calls the record processor specified in GNUNET_NAMESTORE_zone_iteration_start for the next record. More...
 
void GNUNET_NAMESTORE_zone_iteration_stop (struct GNUNET_NAMESTORE_ZoneIterator *it)
 Stops iteration and releases the namestore handle for further calls. More...
 
void GNUNET_NAMESTORE_cancel (struct GNUNET_NAMESTORE_QueueEntry *qe)
 Cancel a namestore operation. More...
 

Detailed Description

API to access the NAMESTORE service.

Author
Martin Schanzenbach
Matthias Wachs
Christian Grothoff

Definition in file namestore_api.c.

Macro Definition Documentation

◆ LOG

#define LOG (   kind,
  ... 
)    GNUNET_log_from (kind, "namestore-api", __VA_ARGS__)

◆ NAMESTORE_DELAY_TOLERANCE

#define NAMESTORE_DELAY_TOLERANCE   GNUNET_TIME_UNIT_MINUTES

We grant the namestore up to 1 minute of latency, if it is slower than that, store queries will fail.

Definition at line 47 of file namestore_api.c.

Referenced by GNUNET_NAMESTORE_records_store(), and warn_delay().

Function Documentation

◆ force_reconnect()

static void force_reconnect ( struct GNUNET_NAMESTORE_Handle h)
static

Disconnect from service and then reconnect.

Parameters
hour handle

Definition at line 836 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::cont, GNUNET_NAMESTORE_QueueEntry::cont_cls, GNUNET_NAMESTORE_QueueEntry::error_cb, GNUNET_NAMESTORE_ZoneIterator::error_cb, GNUNET_NAMESTORE_QueueEntry::error_cb_cls, GNUNET_NAMESTORE_ZoneIterator::error_cb_cls, free_qe(), free_ze(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_MQ_destroy(), GNUNET_SCHEDULER_add_delayed(), GNUNET_SYSERR, GNUNET_TIME_STD_BACKOFF, GNUNET_NAMESTORE_Handle::mq, GNUNET_NAMESTORE_Handle::op_head, qe, GNUNET_NAMESTORE_Handle::reconnect_delay, GNUNET_NAMESTORE_Handle::reconnect_task, reconnect_task(), and GNUNET_NAMESTORE_Handle::z_head.

Referenced by handle_record_result(), handle_record_result_end(), handle_zone_to_name_response(), and mq_error_handler().

837 {
840 
841  GNUNET_MQ_destroy (h->mq);
842  h->mq = NULL;
843  while (NULL != (ze = h->z_head))
844  {
845  if (NULL != ze->error_cb)
846  ze->error_cb (ze->error_cb_cls);
847  free_ze (ze);
848  }
849  while (NULL != (qe = h->op_head))
850  {
851  if (NULL != qe->error_cb)
852  qe->error_cb (qe->error_cb_cls);
853  if (NULL != qe->cont)
854  qe->cont (qe->cont_cls,
856  "failure in communication with namestore service");
857  free_qe (qe);
858  }
859 
860  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Reconnecting to namestore\n");
862  h->reconnect_task =
864 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
GNUNET_SCHEDULER_TaskCallback error_cb
Function to call on errors.
GNUNET_SCHEDULER_TaskCallback error_cb
Function to call on errors.
Definition: namestore_api.c:93
void * error_cb_cls
Closure for error_cb.
void * error_cb_cls
Closure for error_cb.
Definition: namestore_api.c:98
static void free_ze(struct GNUNET_NAMESTORE_ZoneIterator *ze)
Free ze.
Handle for a zone iterator operation.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1269
struct GNUNET_TIME_Relative reconnect_delay
Delay introduced before we reconnect.
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
#define GNUNET_TIME_STD_BACKOFF(r)
Perform our standard exponential back-off calculation, starting at 1 ms and then going by a factor of...
GNUNET_NAMESTORE_ContinuationWithStatus cont
Continuation to call.
Definition: namestore_api.c:73
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
void * cont_cls
Closure for cont.
Definition: namestore_api.c:78
struct GNUNET_NAMESTORE_QueueEntry * op_head
Head of pending namestore queue entries.
struct GNUNET_NAMESTORE_ZoneIterator * z_head
Head of pending namestore zone iterator entries.
#define GNUNET_log(kind,...)
struct GNUNET_SCHEDULER_Task * reconnect_task
Reconnect task.
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:837
static void reconnect_task(void *cls)
Re-establish the connection to the service.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ find_qe()

static struct GNUNET_NAMESTORE_QueueEntry* find_qe ( struct GNUNET_NAMESTORE_Handle h,
uint32_t  rid 
)
static

Find the queue entry that matches the rid.

Parameters
hnamestore handle
ridid to look up
Returns
NULL if rid was not found

Definition at line 260 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::next, GNUNET_NAMESTORE_Handle::op_head, GNUNET_NAMESTORE_QueueEntry::op_id, and qe.

Referenced by handle_lookup_result(), handle_record_result(), handle_record_result_end(), handle_record_store_response(), and handle_zone_to_name_response().

261 {
263 
264  for (qe = h->op_head; qe != NULL; qe = qe->next)
265  if (qe->op_id == rid)
266  return qe;
267  return NULL;
268 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
struct GNUNET_NAMESTORE_QueueEntry * next
Kept in a DLL.
Definition: namestore_api.c:58
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
uint32_t op_id
The operation id this zone iteration operation has.
struct GNUNET_NAMESTORE_QueueEntry * op_head
Head of pending namestore queue entries.
Here is the caller graph for this function:

◆ find_zi()

static struct GNUNET_NAMESTORE_ZoneIterator* find_zi ( struct GNUNET_NAMESTORE_Handle h,
uint32_t  rid 
)
static

Find the zone iteration entry that matches the rid.

Parameters
hnamestore handle
ridid to look up
Returns
NULL if rid was not found

Definition at line 279 of file namestore_api.c.

References GNUNET_NAMESTORE_ZoneIterator::next, GNUNET_NAMESTORE_ZoneIterator::op_id, and GNUNET_NAMESTORE_Handle::z_head.

Referenced by handle_record_result(), and handle_record_result_end().

280 {
282 
283  for (ze = h->z_head; ze != NULL; ze = ze->next)
284  if (ze->op_id == rid)
285  return ze;
286  return NULL;
287 }
uint32_t op_id
The operation id this zone iteration operation has.
Handle for a zone iterator operation.
struct GNUNET_NAMESTORE_ZoneIterator * next
Kept in a DLL.
struct GNUNET_NAMESTORE_ZoneIterator * z_head
Head of pending namestore zone iterator entries.
Here is the caller graph for this function:

◆ free_qe()

static void free_qe ( struct GNUNET_NAMESTORE_QueueEntry qe)
static

Free qe.

Parameters
qeentry to free

Definition at line 296 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::env, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_MQ_discard(), GNUNET_SCHEDULER_cancel(), GNUNET_NAMESTORE_QueueEntry::h, GNUNET_NAMESTORE_Handle::op_head, GNUNET_NAMESTORE_Handle::op_tail, and GNUNET_NAMESTORE_QueueEntry::timeout_task.

Referenced by force_reconnect(), GNUNET_NAMESTORE_cancel(), handle_lookup_result(), handle_record_result(), handle_record_store_response(), and handle_zone_to_name_response().

297 {
298  struct GNUNET_NAMESTORE_Handle *h = qe->h;
299 
301  if (NULL != qe->env)
302  GNUNET_MQ_discard (qe->env);
303  if (NULL != qe->timeout_task)
305  GNUNET_free (qe);
306 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_NAMESTORE_Handle * h
Main handle to access the namestore.
Definition: namestore_api.c:68
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
Connection to the NAMESTORE service.
struct GNUNET_MQ_Envelope * env
Envelope of the message to send to the service, if not yet sent.
void GNUNET_MQ_discard(struct GNUNET_MQ_Envelope *mqm)
Discard the message queue message, free all allocated resources.
Definition: mq.c:323
struct GNUNET_NAMESTORE_QueueEntry * op_tail
Tail of pending namestore queue entries.
struct GNUNET_NAMESTORE_QueueEntry * op_head
Head of pending namestore queue entries.
struct GNUNET_SCHEDULER_Task * timeout_task
Task scheduled to warn us if the namestore is way too slow.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ free_ze()

static void free_ze ( struct GNUNET_NAMESTORE_ZoneIterator ze)
static

Free ze.

Parameters
zeentry to free

Definition at line 315 of file namestore_api.c.

References GNUNET_NAMESTORE_ZoneIterator::env, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_MQ_discard(), GNUNET_NAMESTORE_QueueEntry::h, GNUNET_NAMESTORE_ZoneIterator::h, GNUNET_NAMESTORE_Handle::z_head, and GNUNET_NAMESTORE_Handle::z_tail.

Referenced by force_reconnect(), GNUNET_NAMESTORE_zone_iteration_stop(), and handle_record_result_end().

316 {
317  struct GNUNET_NAMESTORE_Handle *h = ze->h;
318 
320  if (NULL != ze->env)
321  GNUNET_MQ_discard (ze->env);
322  GNUNET_free (ze);
323 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_MQ_Envelope * env
Envelope of the message to send to the service, if not yet sent.
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
Connection to the NAMESTORE service.
void GNUNET_MQ_discard(struct GNUNET_MQ_Envelope *mqm)
Discard the message queue message, free all allocated resources.
Definition: mq.c:323
struct GNUNET_NAMESTORE_Handle * h
Main handle to access the namestore.
struct GNUNET_NAMESTORE_ZoneIterator * z_head
Head of pending namestore zone iterator entries.
struct GNUNET_NAMESTORE_ZoneIterator * z_tail
Tail of pending namestore zone iterator entries.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ check_rd()

static int check_rd ( size_t  rd_len,
const void *  rd_buf,
unsigned int  rd_count 
)
static

Check that rd_buf of lenght rd_len contains rd_count records.

Parameters
rd_lenlength of rd_buf
rd_bufbuffer with serialized records
rd_countnumber of records expected
Returns
GNUNET_OK if rd_buf is well-formed

Definition at line 336 of file namestore_api.c.

References GNUNET_break, GNUNET_GNSRECORD_records_deserialize(), GNUNET_OK, and GNUNET_SYSERR.

Referenced by check_lookup_result(), check_record_result(), and check_zone_to_name_response().

337 {
338  struct GNUNET_GNSRECORD_Data rd[rd_count];
339 
340  if (GNUNET_OK !=
341  GNUNET_GNSRECORD_records_deserialize (rd_len, rd_buf, rd_count, rd))
342  {
343  GNUNET_break (0);
344  return GNUNET_SYSERR;
345  }
346  return GNUNET_OK;
347 }
int GNUNET_GNSRECORD_records_deserialize(size_t len, const char *src, unsigned int rd_count, struct GNUNET_GNSRECORD_Data *dest)
Deserialize the given records to the given destination.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
Here is the call graph for this function:
Here is the caller graph for this function:

◆ handle_record_store_response()

static void handle_record_store_response ( void *  cls,
const struct RecordStoreResponseMessage msg 
)
static

Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE.

Parameters
cls
msgthe message we received

Definition at line 358 of file namestore_api.c.

References _, GNUNET_NAMESTORE_QueueEntry::cont, GNUNET_NAMESTORE_QueueEntry::cont_cls, find_qe(), free_qe(), RecordStoreResponseMessage::gns_header, GNUNET_ERROR_TYPE_DEBUG, GNUNET_SYSERR, GNUNET_NAMESTORE_QueueEntry::h, LOG, RecordStoreResponseMessage::op_result, qe, GNUNET_NAMESTORE_Header::r_id, and res.

360 {
361  struct GNUNET_NAMESTORE_Handle *h = cls;
363  int res;
364  const char *emsg;
365 
366  qe = find_qe (h, ntohl (msg->gns_header.r_id));
367  res = ntohl (msg->op_result);
369  "Received RECORD_STORE_RESPONSE with result %d\n",
370  res);
371  /* TODO: add actual error message from namestore to response... */
372  if (GNUNET_SYSERR == res)
373  emsg = _ ("Namestore failed to store record\n");
374  else
375  emsg = NULL;
376  if (NULL == qe)
377  return;
378  if (NULL != qe->cont)
379  qe->cont (qe->cont_cls, res, emsg);
380  free_qe (qe);
381 }
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE.
Definition: namestore.h:110
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
int32_t op_result
GNUNET_SYSERR on failure, GNUNET_OK on success
Definition: namestore.h:115
Connection to the NAMESTORE service.
static int res
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
GNUNET_NAMESTORE_ContinuationWithStatus cont
Continuation to call.
Definition: namestore_api.c:73
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
#define LOG(kind,...)
Definition: namestore_api.c:41
void * cont_cls
Closure for cont.
Definition: namestore_api.c:78
static struct GNUNET_NAMESTORE_QueueEntry * find_qe(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the queue entry that matches the rid.
Here is the call graph for this function:

◆ check_lookup_result()

static int check_lookup_result ( void *  cls,
const struct LabelLookupResponseMessage msg 
)
static

Check validity of an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE.

Parameters
cls
msgthe message we received
Returns
GNUNET_OK on success, GNUNET_SYSERR on error

Definition at line 393 of file namestore_api.c.

References check_rd(), LabelLookupResponseMessage::found, LabelLookupResponseMessage::gns_header, GNUNET_break, GNUNET_NO, GNUNET_OK, GNUNET_SYSERR, GNUNET_NAMESTORE_Header::header, name, LabelLookupResponseMessage::name_len, LabelLookupResponseMessage::rd_count, LabelLookupResponseMessage::rd_len, and GNUNET_MessageHeader::size.

394 {
395  const char *name;
396  size_t exp_msg_len;
397  size_t msg_len;
398  size_t name_len;
399  size_t rd_len;
400 
401  (void) cls;
402  rd_len = ntohs (msg->rd_len);
403  msg_len = ntohs (msg->gns_header.header.size);
404  name_len = ntohs (msg->name_len);
405  exp_msg_len = sizeof(*msg) + name_len + rd_len;
406  if (msg_len != exp_msg_len)
407  {
408  GNUNET_break (0);
409  return GNUNET_SYSERR;
410  }
411  name = (const char *) &msg[1];
412  if ((name_len > 0) && ('\0' != name[name_len - 1]))
413  {
414  GNUNET_break (0);
415  return GNUNET_SYSERR;
416  }
417  if (GNUNET_NO == ntohs (msg->found))
418  {
419  if (0 != ntohs (msg->rd_count))
420  {
421  GNUNET_break (0);
422  return GNUNET_SYSERR;
423  }
424  return GNUNET_OK;
425  }
426  return check_rd (rd_len, &name[name_len], ntohs (msg->rd_count));
427 }
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:163
uint16_t rd_count
Number of records contained.
Definition: namestore.h:168
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:46
static int check_rd(size_t rd_len, const void *rd_buf, unsigned int rd_count)
Check that rd_buf of lenght rd_len contains rd_count records.
uint16_t name_len
Name length.
Definition: namestore.h:158
uint16_t found
Was the label found in the database?? GNUNET_YES or GNUNET_NO.
Definition: namestore.h:174
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE.
Definition: namestore.h:153
const char * name
Here is the call graph for this function:

◆ handle_lookup_result()

static void handle_lookup_result ( void *  cls,
const struct LabelLookupResponseMessage msg 
)
static

Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE.

Parameters
cls
msgthe message we received

Definition at line 438 of file namestore_api.c.

References find_qe(), LabelLookupResponseMessage::found, free_qe(), LabelLookupResponseMessage::gns_header, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_GNSRECORD_records_deserialize(), GNUNET_NO, GNUNET_OK, GNUNET_NAMESTORE_QueueEntry::h, LOG, name, LabelLookupResponseMessage::name_len, LabelLookupResponseMessage::private_key, GNUNET_NAMESTORE_QueueEntry::proc, GNUNET_NAMESTORE_QueueEntry::proc_cls, qe, GNUNET_NAMESTORE_Header::r_id, LabelLookupResponseMessage::rd_count, and LabelLookupResponseMessage::rd_len.

439 {
440  struct GNUNET_NAMESTORE_Handle *h = cls;
442  const char *name;
443  const char *rd_tmp;
444  size_t name_len;
445  size_t rd_len;
446  unsigned int rd_count;
447 
448  LOG (GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_LOOKUP_RESULT\n");
449  qe = find_qe (h, ntohl (msg->gns_header.r_id));
450  if (NULL == qe)
451  return;
452  rd_len = ntohs (msg->rd_len);
453  rd_count = ntohs (msg->rd_count);
454  name_len = ntohs (msg->name_len);
455  name = (const char *) &msg[1];
456  if (GNUNET_NO == ntohs (msg->found))
457  {
458  /* label was not in namestore */
459  if (NULL != qe->proc)
460  qe->proc (qe->proc_cls, &msg->private_key, name, 0, NULL);
461  free_qe (qe);
462  return;
463  }
464 
465  rd_tmp = &name[name_len];
466  {
467  struct GNUNET_GNSRECORD_Data rd[rd_count];
468 
469  GNUNET_assert (
470  GNUNET_OK ==
471  GNUNET_GNSRECORD_records_deserialize (rd_len, rd_tmp, rd_count, rd));
472  if (0 == name_len)
473  name = NULL;
474  if (NULL != qe->proc)
475  qe->proc (qe->proc_cls,
476  &msg->private_key,
477  name,
478  rd_count,
479  (rd_count > 0) ? rd : NULL);
480  }
481  free_qe (qe);
482 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
GNUNET_NAMESTORE_RecordMonitor proc
Function to call with the records we get back; or NULL.
Definition: namestore_api.c:83
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:163
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
uint16_t rd_count
Number of records contained.
Definition: namestore.h:168
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
int GNUNET_GNSRECORD_records_deserialize(size_t len, const char *src, unsigned int rd_count, struct GNUNET_GNSRECORD_Data *dest)
Deserialize the given records to the given destination.
void * proc_cls
Closure for proc.
Definition: namestore_api.c:88
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
Connection to the NAMESTORE service.
uint16_t name_len
Name length.
Definition: namestore.h:158
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
uint16_t found
Was the label found in the database?? GNUNET_YES or GNUNET_NO.
Definition: namestore.h:174
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
#define LOG(kind,...)
Definition: namestore_api.c:41
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE.
Definition: namestore.h:153
const char * name
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:179
static struct GNUNET_NAMESTORE_QueueEntry * find_qe(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the queue entry that matches the rid.
Here is the call graph for this function:

◆ check_record_result()

static int check_record_result ( void *  cls,
const struct RecordResultMessage msg 
)
static

Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.

Parameters
cls
msgthe message we received
Returns
GNUNET_OK on success, GNUNET_SYSERR on error

Definition at line 494 of file namestore_api.c.

References check_rd(), RecordResultMessage::gns_header, GNUNET_break, GNUNET_memcmp, GNUNET_SYSERR, GNUNET_NAMESTORE_Header::header, name, RecordResultMessage::name_len, RecordResultMessage::private_key, RecordResultMessage::rd_count, RecordResultMessage::rd_len, RecordResultMessage::reserved, and GNUNET_MessageHeader::size.

495 {
496  static struct GNUNET_CRYPTO_EcdsaPrivateKey priv_dummy;
497  const char *name;
498  size_t msg_len;
499  size_t name_len;
500  size_t rd_len;
501 
502  (void) cls;
503  rd_len = ntohs (msg->rd_len);
504  msg_len = ntohs (msg->gns_header.header.size);
505  name_len = ntohs (msg->name_len);
506  if (0 != ntohs (msg->reserved))
507  {
508  GNUNET_break (0);
509  return GNUNET_SYSERR;
510  }
511  if (msg_len != sizeof(struct RecordResultMessage) + name_len + rd_len)
512  {
513  GNUNET_break (0);
514  return GNUNET_SYSERR;
515  }
516  name = (const char *) &msg[1];
517  if ((0 == name_len) || ('\0' != name[name_len - 1]))
518  {
519  GNUNET_break (0);
520  return GNUNET_SYSERR;
521  }
522  if (0 == GNUNET_memcmp (&msg->private_key, &priv_dummy))
523  {
524  GNUNET_break (0);
525  return GNUNET_SYSERR;
526  }
527  return check_rd (rd_len, &name[name_len], ntohs (msg->rd_count));
528 }
uint16_t reserved
always zero (for alignment)
Definition: namestore.h:281
Private ECC key encoded for transmission.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
uint16_t name_len
Name length.
Definition: namestore.h:266
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:46
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:286
static int check_rd(size_t rd_len, const void *rd_buf, unsigned int rd_count)
Check that rd_buf of lenght rd_len contains rd_count records.
uint16_t rd_count
Number of records contained.
Definition: namestore.h:276
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:271
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.
Definition: namestore.h:261
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
const char * name
Record is returned from the namestore (as authority).
Definition: namestore.h:256
Here is the call graph for this function:

◆ handle_record_result()

static void handle_record_result ( void *  cls,
const struct RecordResultMessage msg 
)
static

Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.

Parameters
cls
msgthe message we received

Definition at line 539 of file namestore_api.c.

References find_qe(), find_zi(), force_reconnect(), free_qe(), RecordResultMessage::gns_header, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_GNSRECORD_records_deserialize(), GNUNET_OK, GNUNET_NAMESTORE_QueueEntry::h, LOG, name, RecordResultMessage::name_len, RecordResultMessage::private_key, GNUNET_NAMESTORE_QueueEntry::proc, GNUNET_NAMESTORE_ZoneIterator::proc, GNUNET_NAMESTORE_QueueEntry::proc_cls, GNUNET_NAMESTORE_ZoneIterator::proc_cls, qe, GNUNET_NAMESTORE_Header::r_id, RecordResultMessage::rd_count, and RecordResultMessage::rd_len.

540 {
541  struct GNUNET_NAMESTORE_Handle *h = cls;
544  const char *name;
545  const char *rd_tmp;
546  size_t name_len;
547  size_t rd_len;
548  unsigned int rd_count;
549 
550  LOG (GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_RESULT\n");
551  rd_len = ntohs (msg->rd_len);
552  rd_count = ntohs (msg->rd_count);
553  name_len = ntohs (msg->name_len);
554  ze = find_zi (h, ntohl (msg->gns_header.r_id));
555  qe = find_qe (h, ntohl (msg->gns_header.r_id));
556  if ((NULL == ze) && (NULL == qe))
557  return; /* rid not found */
558  if ((NULL != ze) && (NULL != qe))
559  {
560  GNUNET_break (0); /* rid ambigous */
561  force_reconnect (h);
562  return;
563  }
564  name = (const char *) &msg[1];
565  rd_tmp = &name[name_len];
566  {
567  struct GNUNET_GNSRECORD_Data rd[rd_count];
568 
569  GNUNET_assert (
570  GNUNET_OK ==
571  GNUNET_GNSRECORD_records_deserialize (rd_len, rd_tmp, rd_count, rd));
572  if (0 == name_len)
573  name = NULL;
574  if (NULL != qe)
575  {
576  if (NULL != qe->proc)
577  qe->proc (qe->proc_cls,
578  &msg->private_key,
579  name,
580  rd_count,
581  (rd_count > 0) ? rd : NULL);
582  free_qe (qe);
583  return;
584  }
585  if (NULL != ze)
586  {
587  if (NULL != ze->proc)
588  ze->proc (ze->proc_cls, &msg->private_key, name, rd_count, rd);
589  return;
590  }
591  }
592  GNUNET_assert (0);
593 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
GNUNET_NAMESTORE_RecordMonitor proc
Function to call with the records we get back; or NULL.
Definition: namestore_api.c:83
GNUNET_NAMESTORE_RecordMonitor proc
The continuation to call with the results.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
void * proc_cls
Closure for proc.
int GNUNET_GNSRECORD_records_deserialize(size_t len, const char *src, unsigned int rd_count, struct GNUNET_GNSRECORD_Data *dest)
Deserialize the given records to the given destination.
void * proc_cls
Closure for proc.
Definition: namestore_api.c:88
#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:99
uint16_t name_len
Name length.
Definition: namestore.h:266
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:286
Handle for a zone iterator operation.
uint16_t rd_count
Number of records contained.
Definition: namestore.h:276
Connection to the NAMESTORE service.
static void force_reconnect(struct GNUNET_NAMESTORE_Handle *h)
Disconnect from service and then reconnect.
static struct GNUNET_NAMESTORE_ZoneIterator * find_zi(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the zone iteration entry that matches the rid.
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:271
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.
Definition: namestore.h:261
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
#define LOG(kind,...)
Definition: namestore_api.c:41
const char * name
static struct GNUNET_NAMESTORE_QueueEntry * find_qe(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the queue entry that matches the rid.
Here is the call graph for this function:

◆ handle_record_result_end()

static void handle_record_result_end ( void *  cls,
const struct GNUNET_NAMESTORE_Header msg 
)
static

Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT_END.

Parameters
cls
msgthe message we received

Definition at line 604 of file namestore_api.c.

References find_qe(), find_zi(), GNUNET_NAMESTORE_ZoneIterator::finish_cb, GNUNET_NAMESTORE_ZoneIterator::finish_cb_cls, force_reconnect(), free_ze(), GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_NAMESTORE_QueueEntry::h, LOG, qe, and GNUNET_NAMESTORE_Header::r_id.

605 {
606  struct GNUNET_NAMESTORE_Handle *h = cls;
609 
610  LOG (GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_RESULT_END\n");
611  ze = find_zi (h, ntohl (msg->r_id));
612  qe = find_qe (h, ntohl (msg->r_id));
613  if ((NULL == ze) && (NULL == qe))
614  return; /* rid not found */
615  if ((NULL != ze) && (NULL != qe))
616  {
617  GNUNET_break (0); /* rid ambigous */
618  force_reconnect (h);
619  return;
620  }
621  LOG (GNUNET_ERROR_TYPE_DEBUG, "Zone iteration completed!\n");
622  if (NULL == ze)
623  {
624  GNUNET_break (0);
625  force_reconnect (h);
626  return;
627  }
628  if (NULL != ze->finish_cb)
629  ze->finish_cb (ze->finish_cb_cls);
630  free_ze (ze);
631 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
GNUNET_SCHEDULER_TaskCallback finish_cb
Function to call on completion.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
#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:99
static void free_ze(struct GNUNET_NAMESTORE_ZoneIterator *ze)
Free ze.
Handle for a zone iterator operation.
Connection to the NAMESTORE service.
static void force_reconnect(struct GNUNET_NAMESTORE_Handle *h)
Disconnect from service and then reconnect.
static struct GNUNET_NAMESTORE_ZoneIterator * find_zi(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the zone iteration entry that matches the rid.
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
#define LOG(kind,...)
Definition: namestore_api.c:41
void * finish_cb_cls
Closure for error_cb.
static struct GNUNET_NAMESTORE_QueueEntry * find_qe(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the queue entry that matches the rid.
Here is the call graph for this function:

◆ check_zone_to_name_response()

static int check_zone_to_name_response ( void *  cls,
const struct ZoneToNameResponseMessage msg 
)
static

Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.

Parameters
qethe respective entry in the message queue
msgthe message we received
Returns
GNUNET_OK on success, GNUNET_SYSERR if message malformed

Definition at line 643 of file namestore_api.c.

References check_rd(), ZoneToNameResponseMessage::gns_header, GNUNET_break, GNUNET_OK, GNUNET_SYSERR, GNUNET_NAMESTORE_Header::header, ZoneToNameResponseMessage::name_len, ZoneToNameResponseMessage::rd_count, ZoneToNameResponseMessage::rd_len, ZoneToNameResponseMessage::res, and GNUNET_MessageHeader::size.

645 {
646  size_t name_len;
647  size_t rd_ser_len;
648  const char *name_tmp;
649 
650  (void) cls;
651  if (GNUNET_OK != ntohs (msg->res))
652  return GNUNET_OK;
653  name_len = ntohs (msg->name_len);
654  rd_ser_len = ntohs (msg->rd_len);
655  if (ntohs (msg->gns_header.header.size) !=
656  sizeof(struct ZoneToNameResponseMessage) + name_len + rd_ser_len)
657  {
658  GNUNET_break (0);
659  return GNUNET_SYSERR;
660  }
661  name_tmp = (const char *) &msg[1];
662  if ((name_len > 0) && ('\0' != name_tmp[name_len - 1]))
663  {
664  GNUNET_break (0);
665  return GNUNET_SYSERR;
666  }
667  return check_rd (rd_ser_len, &name_tmp[name_len], ntohs (msg->rd_count));
668 }
uint16_t name_len
Length of the name.
Definition: namestore.h:223
int16_t res
result in NBO: GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error ...
Definition: namestore.h:239
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
uint16_t rd_count
Number of records contained.
Definition: namestore.h:233
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:46
static int check_rd(size_t rd_len, const void *rd_buf, unsigned int rd_count)
Check that rd_buf of lenght rd_len contains rd_count records.
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
Definition: namestore.h:218
Respone for zone to name lookup.
Definition: namestore.h:213
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:228
Here is the call graph for this function:

◆ handle_zone_to_name_response()

static void handle_zone_to_name_response ( void *  cls,
const struct ZoneToNameResponseMessage msg 
)
static

Handle an incoming message of type GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.

Parameters
cls
msgthe message we received

Definition at line 679 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::error_cb, GNUNET_NAMESTORE_QueueEntry::error_cb_cls, find_qe(), force_reconnect(), free_qe(), ZoneToNameResponseMessage::gns_header, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_GNSRECORD_records_deserialize(), GNUNET_NO, GNUNET_OK, GNUNET_SYSERR, GNUNET_YES, GNUNET_NAMESTORE_QueueEntry::h, LOG, ZoneToNameResponseMessage::name_len, GNUNET_NAMESTORE_QueueEntry::proc, GNUNET_NAMESTORE_QueueEntry::proc_cls, qe, GNUNET_NAMESTORE_Header::r_id, ZoneToNameResponseMessage::rd_count, ZoneToNameResponseMessage::rd_len, res, ZoneToNameResponseMessage::res, and ZoneToNameResponseMessage::zone.

681 {
682  struct GNUNET_NAMESTORE_Handle *h = cls;
684  int res;
685  size_t name_len;
686  size_t rd_ser_len;
687  unsigned int rd_count;
688  const char *name_tmp;
689  const char *rd_tmp;
690 
691  LOG (GNUNET_ERROR_TYPE_DEBUG, "Received ZONE_TO_NAME_RESPONSE\n");
692  qe = find_qe (h, ntohl (msg->gns_header.r_id));
693  res = ntohs (msg->res);
694  switch (res)
695  {
696  case GNUNET_SYSERR:
698  "An error occurred during zone to name operation\n");
699  break;
700 
701  case GNUNET_NO:
703  "Namestore has no result for zone to name mapping \n");
704  if (NULL != qe->proc)
705  qe->proc (qe->proc_cls, &msg->zone, NULL, 0, NULL);
706  free_qe (qe);
707  return;
708 
709  case GNUNET_YES:
711  "Namestore has result for zone to name mapping \n");
712  name_len = ntohs (msg->name_len);
713  rd_count = ntohs (msg->rd_count);
714  rd_ser_len = ntohs (msg->rd_len);
715  name_tmp = (const char *) &msg[1];
716  rd_tmp = &name_tmp[name_len];
717  {
718  struct GNUNET_GNSRECORD_Data rd[rd_count];
719 
722  rd_tmp,
723  rd_count,
724  rd));
725  /* normal end, call continuation with result */
726  if (NULL != qe->proc)
727  qe->proc (qe->proc_cls, &msg->zone, name_tmp, rd_count, rd);
728  /* return is important here: break would call continuation with error! */
729  free_qe (qe);
730  return;
731  }
732 
733  default:
734  GNUNET_break (0);
735  force_reconnect (h);
736  return;
737  }
738  /* error case, call continuation with error */
739  if (NULL != qe->error_cb)
740  qe->error_cb (qe->error_cb_cls);
741  free_qe (qe);
742 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
GNUNET_NAMESTORE_RecordMonitor proc
Function to call with the records we get back; or NULL.
Definition: namestore_api.c:83
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
GNUNET_SCHEDULER_TaskCallback error_cb
Function to call on errors.
Definition: namestore_api.c:93
uint16_t name_len
Length of the name.
Definition: namestore.h:223
int16_t res
result in NBO: GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error ...
Definition: namestore.h:239
int GNUNET_GNSRECORD_records_deserialize(size_t len, const char *src, unsigned int rd_count, struct GNUNET_GNSRECORD_Data *dest)
Deserialize the given records to the given destination.
void * proc_cls
Closure for proc.
Definition: namestore_api.c:88
void * error_cb_cls
Closure for error_cb.
Definition: namestore_api.c:98
#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:99
uint16_t rd_count
Number of records contained.
Definition: namestore.h:233
Connection to the NAMESTORE service.
static void force_reconnect(struct GNUNET_NAMESTORE_Handle *h)
Disconnect from service and then reconnect.
static int res
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
The private key of the zone that contained the name.
Definition: namestore.h:244
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
#define LOG(kind,...)
Definition: namestore_api.c:41
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
Definition: namestore.h:218
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:228
static struct GNUNET_NAMESTORE_QueueEntry * find_qe(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the queue entry that matches the rid.
Here is the call graph for this function:

◆ mq_error_handler()

static void mq_error_handler ( void *  cls,
enum GNUNET_MQ_Error  error 
)
static

Generic error handler, called with the appropriate error code and the same closure specified at the creation of the message queue.

Not every message queue implementation supports an error handler.

Parameters
clsclosure with the struct GNUNET_NAMESTORE_Handle *
errorerror code

Definition at line 754 of file namestore_api.c.

References force_reconnect(), and GNUNET_NAMESTORE_QueueEntry::h.

Referenced by reconnect().

755 {
756  struct GNUNET_NAMESTORE_Handle *h = cls;
757 
758  (void) error;
759  force_reconnect (h);
760 }
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
Connection to the NAMESTORE service.
static void force_reconnect(struct GNUNET_NAMESTORE_Handle *h)
Disconnect from service and then reconnect.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ reconnect()

static void reconnect ( struct GNUNET_NAMESTORE_Handle h)
static

Reconnect to namestore service.

Parameters
hthe handle to the NAMESTORE service

Definition at line 769 of file namestore_api.c.

References GNUNET_NAMESTORE_Handle::cfg, GNUNET_NAMESTORE_QueueEntry::env, GNUNET_NAMESTORE_ZoneIterator::env, GNUNET_assert, GNUNET_CLIENT_connect(), GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT_END, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE, GNUNET_MQ_handler_end, GNUNET_MQ_hd_fixed_size, GNUNET_MQ_hd_var_size, GNUNET_MQ_send(), GNUNET_NAMESTORE_Handle::mq, mq_error_handler(), GNUNET_NAMESTORE_QueueEntry::next, GNUNET_NAMESTORE_ZoneIterator::next, GNUNET_NAMESTORE_Handle::op_head, qe, and GNUNET_NAMESTORE_Handle::z_head.

Referenced by GNUNET_NAMESTORE_connect(), and reconnect_task().

770 {
772  { GNUNET_MQ_hd_fixed_size (record_store_response,
775  h),
776  GNUNET_MQ_hd_var_size (zone_to_name_response,
779  h),
780  GNUNET_MQ_hd_var_size (record_result,
782  struct RecordResultMessage,
783  h),
784  GNUNET_MQ_hd_fixed_size (record_result_end,
787  h),
788  GNUNET_MQ_hd_var_size (lookup_result,
791  h),
795 
796  GNUNET_assert (NULL == h->mq);
797  h->mq =
798  GNUNET_CLIENT_connect (h->cfg, "namestore", handlers, &mq_error_handler, h);
799  if (NULL == h->mq)
800  return;
801  /* re-transmit pending requests that waited for a reconnect... */
802  for (it = h->z_head; NULL != it; it = it->next)
803  {
804  GNUNET_MQ_send (h->mq, it->env);
805  it->env = NULL;
806  }
807  for (qe = h->op_head; NULL != qe; qe = qe->next)
808  {
809  GNUNET_MQ_send (h->mq, qe->env);
810  qe->env = NULL;
811  }
812 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
struct GNUNET_MQ_Envelope * env
Envelope of the message to send to the service, if not yet sent.
#define GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE
Service to client: result of zone-to-name lookup.
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:1063
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_MQ_hd_fixed_size(name, code, str, ctx)
const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration to use.
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT_END
Service to client: end of list of results.
Handle for a zone iterator operation.
struct GNUNET_NAMESTORE_QueueEntry * next
Kept in a DLL.
Definition: namestore_api.c:58
static struct GNUNET_CADET_MessageHandler handlers[]
Handlers, for diverse services.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
struct GNUNET_MQ_Envelope * env
Envelope of the message to send to the service, if not yet sent.
Message handler for a specific message type.
struct GNUNET_NAMESTORE_ZoneIterator * next
Kept in a DLL.
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE
Service to client: lookup label.
Respone for zone to name lookup.
Definition: namestore.h:213
Response to a record storage request.
Definition: namestore.h:105
struct GNUNET_NAMESTORE_QueueEntry * op_head
Head of pending namestore queue entries.
struct GNUNET_NAMESTORE_ZoneIterator * z_head
Head of pending namestore zone iterator entries.
Generic namestore message with op id.
Definition: namestore.h:40
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:355
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT
Service to client: here is a (plaintext) record you requested.
Record is returned from the namestore (as authority).
Definition: namestore.h:256
static void mq_error_handler(void *cls, enum GNUNET_MQ_Error error)
Generic error handler, called with the appropriate error code and the same closure specified at the c...
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
Lookup a label.
Definition: namestore.h:148
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE
Service to client: result of store operation.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ reconnect_task()

static void reconnect_task ( void *  cls)
static

Re-establish the connection to the service.

Parameters
clshandle to use to re-connect.

Definition at line 821 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::h, reconnect(), and GNUNET_NAMESTORE_Handle::reconnect_task.

Referenced by force_reconnect().

822 {
823  struct GNUNET_NAMESTORE_Handle *h = cls;
824 
825  h->reconnect_task = NULL;
826  reconnect (h);
827 }
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
Connection to the NAMESTORE service.
static void reconnect(struct GNUNET_NAMESTORE_Handle *h)
Reconnect to namestore service.
struct GNUNET_SCHEDULER_Task * reconnect_task
Reconnect task.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ get_op_id()

static uint32_t get_op_id ( struct GNUNET_NAMESTORE_Handle h)
static

Get a fresh operation id to distinguish between namestore requests.

Parameters
hthe namestore handle
Returns
next operation id to use

Definition at line 874 of file namestore_api.c.

References GNUNET_NAMESTORE_Handle::last_op_id_used.

Referenced by GNUNET_NAMESTORE_records_lookup(), GNUNET_NAMESTORE_records_store(), GNUNET_NAMESTORE_zone_iteration_start(), and GNUNET_NAMESTORE_zone_to_name().

875 {
876  return h->last_op_id_used++;
877 }
uint32_t last_op_id_used
The last operation id used for a NAMESTORE operation.
Here is the caller graph for this function:

◆ warn_delay()

static void warn_delay ( void *  cls)
static

Task launched to warn the user that the namestore is excessively slow and that a query was thus dropped.

Parameters
clsa struct GNUNET_NAMESTORE_QueueEntry *

Definition at line 949 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::cont, GNUNET_NAMESTORE_QueueEntry::cont_cls, GNUNET_ERROR_TYPE_WARNING, GNUNET_NAMESTORE_cancel(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_SYSERR, GNUNET_YES, LOG, NAMESTORE_DELAY_TOLERANCE, qe, and GNUNET_NAMESTORE_QueueEntry::timeout_task.

Referenced by GNUNET_NAMESTORE_records_store().

950 {
951  struct GNUNET_NAMESTORE_QueueEntry *qe = cls;
952 
953  qe->timeout_task = NULL;
955  "Did not receive response from namestore after %s!\n",
957  GNUNET_YES));
958  if (NULL != qe->cont)
959  {
960  qe->cont (qe->cont_cls, GNUNET_SYSERR, "timeout");
961  qe->cont = NULL;
962  }
964 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
void GNUNET_NAMESTORE_cancel(struct GNUNET_NAMESTORE_QueueEntry *qe)
Cancel a namestore operation.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:702
#define NAMESTORE_DELAY_TOLERANCE
We grant the namestore up to 1 minute of latency, if it is slower than that, store queries will fail...
Definition: namestore_api.c:47
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
GNUNET_NAMESTORE_ContinuationWithStatus cont
Continuation to call.
Definition: namestore_api.c:73
#define LOG(kind,...)
Definition: namestore_api.c:41
void * cont_cls
Closure for cont.
Definition: namestore_api.c:78
struct GNUNET_SCHEDULER_Task * timeout_task
Task scheduled to warn us if the namestore is way too slow.
Here is the call graph for this function:
Here is the caller graph for this function: