GNUnet  0.10.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_set_nick (struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey, const char *nick, GNUNET_NAMESTORE_ContinuationWithStatus cont, void *cont_cls)
 Set the desired nick name for a zone. 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 831 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().

832 {
835 
836  GNUNET_MQ_destroy(h->mq);
837  h->mq = NULL;
838  while (NULL != (ze = h->z_head))
839  {
840  if (NULL != ze->error_cb)
841  ze->error_cb(ze->error_cb_cls);
842  free_ze(ze);
843  }
844  while (NULL != (qe = h->op_head))
845  {
846  if (NULL != qe->error_cb)
847  qe->error_cb(qe->error_cb_cls);
848  if (NULL != qe->cont)
849  qe->cont(qe->cont_cls,
851  "failure in communication with namestore service");
852  free_qe(qe);
853  }
854 
855  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Reconnecting to namestore\n");
857  h->reconnect_task =
859 }
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:92
void * error_cb_cls
Closure for error_cb.
void * error_cb_cls
Closure for error_cb.
Definition: namestore_api.c:97
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:1237
struct GNUNET_TIME_Relative reconnect_delay
Delay introduced before we reconnect.
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
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:72
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
void * cont_cls
Closure for cont.
Definition: namestore_api.c:77
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:821
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 257 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().

258 {
260 
261  for (qe = h->op_head; qe != NULL; qe = qe->next)
262  if (qe->op_id == rid)
263  return qe;
264  return NULL;
265 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
struct GNUNET_NAMESTORE_QueueEntry * next
Kept in a DLL.
Definition: namestore_api.c:57
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 276 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().

277 {
279 
280  for (ze = h->z_head; ze != NULL; ze = ze->next)
281  if (ze->op_id == rid)
282  return ze;
283  return NULL;
284 }
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 293 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().

294 {
295  struct GNUNET_NAMESTORE_Handle *h = qe->h;
296 
298  if (NULL != qe->env)
299  GNUNET_MQ_discard(qe->env);
300  if (NULL != qe->timeout_task)
302  GNUNET_free(qe);
303 }
#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:67
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
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:319
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:956
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 312 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().

313 {
314  struct GNUNET_NAMESTORE_Handle *h = ze->h;
315 
317  if (NULL != ze->env)
318  GNUNET_MQ_discard(ze->env);
319  GNUNET_free(ze);
320 }
#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:94
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:319
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 333 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().

334 {
335  struct GNUNET_GNSRECORD_Data rd[rd_count];
336 
337  if (GNUNET_OK !=
338  GNUNET_GNSRECORD_records_deserialize(rd_len, rd_buf, rd_count, rd))
339  {
340  GNUNET_break(0);
341  return GNUNET_SYSERR;
342  }
343  return GNUNET_OK;
344 }
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
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...
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
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 355 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.

357 {
358  struct GNUNET_NAMESTORE_Handle *h = cls;
360  int res;
361  const char *emsg;
362 
363  qe = find_qe(h, ntohl(msg->gns_header.r_id));
364  res = ntohl(msg->op_result);
366  "Received RECORD_STORE_RESPONSE with result %d\n",
367  res);
368  /* TODO: add actual error message from namestore to response... */
369  if (GNUNET_SYSERR == res)
370  emsg = _("Namestore failed to store record\n");
371  else
372  emsg = NULL;
373  if (NULL != qe->cont)
374  qe->cont(qe->cont_cls, res, emsg);
375  free_qe(qe);
376 }
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE.
Definition: namestore.h:107
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
int32_t op_result
GNUNET_SYSERR on failure, GNUNET_OK on success
Definition: namestore.h:112
Connection to the NAMESTORE service.
static int res
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
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:72
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:77
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 388 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.

389 {
390  const char *name;
391  size_t exp_msg_len;
392  size_t msg_len;
393  size_t name_len;
394  size_t rd_len;
395 
396  (void)cls;
397  rd_len = ntohs(msg->rd_len);
398  msg_len = ntohs(msg->gns_header.header.size);
399  name_len = ntohs(msg->name_len);
400  exp_msg_len = sizeof(*msg) + name_len + rd_len;
401  if (msg_len != exp_msg_len)
402  {
403  GNUNET_break(0);
404  return GNUNET_SYSERR;
405  }
406  name = (const char *)&msg[1];
407  if ((name_len > 0) && ('\0' != name[name_len - 1]))
408  {
409  GNUNET_break(0);
410  return GNUNET_SYSERR;
411  }
412  if (GNUNET_NO == ntohs(msg->found))
413  {
414  if (0 != ntohs(msg->rd_count))
415  {
416  GNUNET_break(0);
417  return GNUNET_SYSERR;
418  }
419  return GNUNET_OK;
420  }
421  return check_rd(rd_len, &name[name_len], ntohs(msg->rd_count));
422 }
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:158
uint16_t rd_count
Number of records contained.
Definition: namestore.h:163
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
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:45
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:153
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
const char * name
uint16_t found
Was the label found in the database?? GNUNET_YES or GNUNET_NO.
Definition: namestore.h:169
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE.
Definition: namestore.h:148
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 433 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.

434 {
435  struct GNUNET_NAMESTORE_Handle *h = cls;
437  const char *name;
438  const char *rd_tmp;
439  size_t name_len;
440  size_t rd_len;
441  unsigned int rd_count;
442 
443  LOG(GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_LOOKUP_RESULT\n");
444  qe = find_qe(h, ntohl(msg->gns_header.r_id));
445  if (NULL == qe)
446  return;
447  rd_len = ntohs(msg->rd_len);
448  rd_count = ntohs(msg->rd_count);
449  name_len = ntohs(msg->name_len);
450  name = (const char *)&msg[1];
451  if (GNUNET_NO == ntohs(msg->found))
452  {
453  /* label was not in namestore */
454  if (NULL != qe->proc)
455  qe->proc(qe->proc_cls, &msg->private_key, name, 0, NULL);
456  free_qe(qe);
457  return;
458  }
459 
460  rd_tmp = &name[name_len];
461  {
462  struct GNUNET_GNSRECORD_Data rd[rd_count];
463 
465  GNUNET_OK ==
466  GNUNET_GNSRECORD_records_deserialize(rd_len, rd_tmp, rd_count, rd));
467  if (0 == name_len)
468  name = NULL;
469  if (NULL != qe->proc)
470  qe->proc(qe->proc_cls,
471  &msg->private_key,
472  name,
473  rd_count,
474  (rd_count > 0) ? rd : NULL);
475  }
476  free_qe(qe);
477 }
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:82
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:158
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
uint16_t rd_count
Number of records contained.
Definition: namestore.h:163
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
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:87
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
Connection to the NAMESTORE service.
uint16_t name_len
Name length.
Definition: namestore.h:153
An QueueEntry used to store information for a pending NAMESTORE record operation. ...
Definition: namestore_api.c:53
const char * name
uint16_t found
Was the label found in the database?? GNUNET_YES or GNUNET_NO.
Definition: namestore.h:169
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:148
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:174
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 489 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.

490 {
491  static struct GNUNET_CRYPTO_EcdsaPrivateKey priv_dummy;
492  const char *name;
493  size_t msg_len;
494  size_t name_len;
495  size_t rd_len;
496 
497  (void)cls;
498  rd_len = ntohs(msg->rd_len);
499  msg_len = ntohs(msg->gns_header.header.size);
500  name_len = ntohs(msg->name_len);
501  if (0 != ntohs(msg->reserved))
502  {
503  GNUNET_break(0);
504  return GNUNET_SYSERR;
505  }
506  if (msg_len != sizeof(struct RecordResultMessage) + name_len + rd_len)
507  {
508  GNUNET_break(0);
509  return GNUNET_SYSERR;
510  }
511  name = (const char *)&msg[1];
512  if ((0 == name_len) || ('\0' != name[name_len - 1]))
513  {
514  GNUNET_break(0);
515  return GNUNET_SYSERR;
516  }
517  if (0 == GNUNET_memcmp(&msg->private_key, &priv_dummy))
518  {
519  GNUNET_break(0);
520  return GNUNET_SYSERR;
521  }
522  return check_rd(rd_len, &name[name_len], ntohs(msg->rd_count));
523 }
uint16_t reserved
always zero (for alignment)
Definition: namestore.h:274
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:259
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:45
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:279
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:269
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
const char * name
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:264
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.
Definition: namestore.h:254
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
Record is returned from the namestore (as authority).
Definition: namestore.h:250
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 534 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.

535 {
536  struct GNUNET_NAMESTORE_Handle *h = cls;
539  const char *name;
540  const char *rd_tmp;
541  size_t name_len;
542  size_t rd_len;
543  unsigned int rd_count;
544 
545  LOG(GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_RESULT\n");
546  rd_len = ntohs(msg->rd_len);
547  rd_count = ntohs(msg->rd_count);
548  name_len = ntohs(msg->name_len);
549  ze = find_zi(h, ntohl(msg->gns_header.r_id));
550  qe = find_qe(h, ntohl(msg->gns_header.r_id));
551  if ((NULL == ze) && (NULL == qe))
552  return; /* rid not found */
553  if ((NULL != ze) && (NULL != qe))
554  {
555  GNUNET_break(0); /* rid ambigous */
556  force_reconnect(h);
557  return;
558  }
559  name = (const char *)&msg[1];
560  rd_tmp = &name[name_len];
561  {
562  struct GNUNET_GNSRECORD_Data rd[rd_count];
563 
565  GNUNET_OK ==
566  GNUNET_GNSRECORD_records_deserialize(rd_len, rd_tmp, rd_count, rd));
567  if (0 == name_len)
568  name = NULL;
569  if (NULL != qe)
570  {
571  if (NULL != qe->proc)
572  qe->proc(qe->proc_cls,
573  &msg->private_key,
574  name,
575  rd_count,
576  (rd_count > 0) ? rd : NULL);
577  free_qe(qe);
578  return;
579  }
580  if (NULL != ze)
581  {
582  if (NULL != ze->proc)
583  ze->proc(ze->proc_cls, &msg->private_key, name, rd_count, rd);
584  return;
585  }
586  }
587  GNUNET_assert(0);
588 }
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:82
GNUNET_NAMESTORE_RecordMonitor proc
The continuation to call with the results.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
void * proc_cls
Closure for proc.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
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:87
#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
uint16_t name_len
Name length.
Definition: namestore.h:259
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:279
Handle for a zone iterator operation.
uint16_t rd_count
Number of records contained.
Definition: namestore.h:269
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
const char * name
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:264
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.
Definition: namestore.h:254
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
#define LOG(kind,...)
Definition: namestore_api.c:41
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 599 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.

600 {
601  struct GNUNET_NAMESTORE_Handle *h = cls;
604 
605  LOG(GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_RESULT_END\n");
606  ze = find_zi(h, ntohl(msg->r_id));
607  qe = find_qe(h, ntohl(msg->r_id));
608  if ((NULL == ze) && (NULL == qe))
609  return; /* rid not found */
610  if ((NULL != ze) && (NULL != qe))
611  {
612  GNUNET_break(0); /* rid ambigous */
613  force_reconnect(h);
614  return;
615  }
616  LOG(GNUNET_ERROR_TYPE_DEBUG, "Zone iteration completed!\n");
617  if (NULL == ze)
618  {
619  GNUNET_break(0);
620  force_reconnect(h);
621  return;
622  }
623  if (NULL != ze->finish_cb)
624  ze->finish_cb(ze->finish_cb_cls);
625  free_ze(ze);
626 }
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:50
#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
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 638 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.

640 {
641  size_t name_len;
642  size_t rd_ser_len;
643  const char *name_tmp;
644 
645  (void)cls;
646  if (GNUNET_OK != ntohs(msg->res))
647  return GNUNET_OK;
648  name_len = ntohs(msg->name_len);
649  rd_ser_len = ntohs(msg->rd_len);
650  if (ntohs(msg->gns_header.header.size) !=
651  sizeof(struct ZoneToNameResponseMessage) + name_len + rd_ser_len)
652  {
653  GNUNET_break(0);
654  return GNUNET_SYSERR;
655  }
656  name_tmp = (const char *)&msg[1];
657  if ((name_len > 0) && ('\0' != name_tmp[name_len - 1]))
658  {
659  GNUNET_break(0);
660  return GNUNET_SYSERR;
661  }
662  return check_rd(rd_ser_len, &name_tmp[name_len], ntohs(msg->rd_count));
663 }
uint16_t name_len
Length of the name.
Definition: namestore.h:217
int16_t res
result in NBO: GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error ...
Definition: namestore.h:233
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
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:227
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:45
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.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
Definition: namestore.h:212
Respone for zone to name lookup.
Definition: namestore.h:208
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:222
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 674 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.

676 {
677  struct GNUNET_NAMESTORE_Handle *h = cls;
679  int res;
680  size_t name_len;
681  size_t rd_ser_len;
682  unsigned int rd_count;
683  const char *name_tmp;
684  const char *rd_tmp;
685 
686  LOG(GNUNET_ERROR_TYPE_DEBUG, "Received ZONE_TO_NAME_RESPONSE\n");
687  qe = find_qe(h, ntohl(msg->gns_header.r_id));
688  res = ntohs(msg->res);
689  switch (res)
690  {
691  case GNUNET_SYSERR:
693  "An error occurred during zone to name operation\n");
694  break;
695 
696  case GNUNET_NO:
698  "Namestore has no result for zone to name mapping \n");
699  if (NULL != qe->proc)
700  qe->proc(qe->proc_cls, &msg->zone, NULL, 0, NULL);
701  free_qe(qe);
702  return;
703 
704  case GNUNET_YES:
706  "Namestore has result for zone to name mapping \n");
707  name_len = ntohs(msg->name_len);
708  rd_count = ntohs(msg->rd_count);
709  rd_ser_len = ntohs(msg->rd_len);
710  name_tmp = (const char *)&msg[1];
711  rd_tmp = &name_tmp[name_len];
712  {
713  struct GNUNET_GNSRECORD_Data rd[rd_count];
714 
717  rd_tmp,
718  rd_count,
719  rd));
720  /* normal end, call continuation with result */
721  if (NULL != qe->proc)
722  qe->proc(qe->proc_cls, &msg->zone, name_tmp, rd_count, rd);
723  /* return is important here: break would call continuation with error! */
724  free_qe(qe);
725  return;
726  }
727 
728  default:
729  GNUNET_break(0);
730  force_reconnect(h);
731  return;
732  }
733  /* error case, call continuation with error */
734  if (NULL != qe->error_cb)
735  qe->error_cb(qe->error_cb_cls);
736  free_qe(qe);
737 }
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:82
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
#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:92
uint16_t name_len
Length of the name.
Definition: namestore.h:217
int16_t res
result in NBO: GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error ...
Definition: namestore.h:233
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
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:87
void * error_cb_cls
Closure for error_cb.
Definition: namestore_api.c:97
#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
uint16_t rd_count
Number of records contained.
Definition: namestore.h:227
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:238
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
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:212
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:222
#define GNUNET_YES
Definition: gnunet_common.h:77
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 749 of file namestore_api.c.

References force_reconnect(), and GNUNET_NAMESTORE_QueueEntry::h.

Referenced by reconnect().

750 {
751  struct GNUNET_NAMESTORE_Handle *h = cls;
752 
753  (void)error;
754  force_reconnect(h);
755 }
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
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 764 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().

765 {
767  { GNUNET_MQ_hd_fixed_size(record_store_response,
770  h),
771  GNUNET_MQ_hd_var_size(zone_to_name_response,
774  h),
775  GNUNET_MQ_hd_var_size(record_result,
777  struct RecordResultMessage,
778  h),
779  GNUNET_MQ_hd_fixed_size(record_result_end,
782  h),
783  GNUNET_MQ_hd_var_size(lookup_result,
786  h),
790 
791  GNUNET_assert(NULL == h->mq);
792  h->mq =
793  GNUNET_CLIENT_connect(h->cfg, "namestore", handlers, &mq_error_handler, h);
794  if (NULL == h->mq)
795  return;
796  /* re-transmit pending requests that waited for a reconnect... */
797  for (it = h->z_head; NULL != it; it = it->next)
798  {
799  GNUNET_MQ_send(h->mq, it->env);
800  it->env = NULL;
801  }
802  for (qe = h->op_head; NULL != qe; qe = qe->next)
803  {
804  GNUNET_MQ_send(h->mq, qe->env);
805  qe->env = NULL;
806  }
807 }
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:900
#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:57
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:208
Response to a record storage request.
Definition: namestore.h:103
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:351
#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:250
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:144
#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 816 of file namestore_api.c.

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

Referenced by force_reconnect().

817 {
818  struct GNUNET_NAMESTORE_Handle *h = cls;
819 
820  h->reconnect_task = NULL;
821  reconnect(h);
822 }
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:94
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 869 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().

870 {
871  return h->last_op_id_used++;
872 }
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 944 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().

945 {
946  struct GNUNET_NAMESTORE_QueueEntry *qe = cls;
947 
948  qe->timeout_task = NULL;
950  "Did not receive response from namestore after %s!\n",
952  GNUNET_YES));
953  if (NULL != qe->cont)
954  {
955  qe->cont(qe->cont_cls, GNUNET_SYSERR, "timeout");
956  qe->cont = NULL;
957  }
959 }
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:686
#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
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
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:72
#define LOG(kind,...)
Definition: namestore_api.c:41
void * cont_cls
Closure for cont.
Definition: namestore_api.c:77
struct GNUNET_SCHEDULER_Task * timeout_task
Task scheduled to warn us if the namestore is way too slow.
#define GNUNET_YES
Definition: gnunet_common.h:77
Here is the call graph for this function:
Here is the caller graph for this function: