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 834 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().

835 {
838 
839  GNUNET_MQ_destroy (h->mq);
840  h->mq = NULL;
841  while (NULL != (ze = h->z_head))
842  {
843  if (NULL != ze->error_cb)
844  ze->error_cb (ze->error_cb_cls);
845  free_ze (ze);
846  }
847  while (NULL != (qe = h->op_head))
848  {
849  if (NULL != qe->error_cb)
850  qe->error_cb (qe->error_cb_cls);
851  if (NULL != qe->cont)
852  qe->cont (qe->cont_cls,
854  "failure in communication with namestore service");
855  free_qe (qe);
856  }
857 
858  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Reconnecting to namestore\n");
860  h->reconnect_task =
862 }
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:94
void * error_cb_cls
Closure for error_cb.
void * error_cb_cls
Closure for error_cb.
Definition: namestore_api.c:99
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:1246
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:79
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:74
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
void * cont_cls
Closure for cont.
Definition: namestore_api.c:79
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:824
static void reconnect_task(void *cls)
Re-establish the connection to the service.
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◆ 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 263 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().

264 {
266 
267  for (qe = h->op_head; qe != NULL; qe = qe->next)
268  if (qe->op_id == rid)
269  return qe;
270  return NULL;
271 }
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
struct GNUNET_NAMESTORE_QueueEntry * next
Kept in a DLL.
Definition: namestore_api.c:59
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.
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◆ 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 282 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().

283 {
285 
286  for (ze = h->z_head; ze != NULL; ze = ze->next)
287  if (ze->op_id == rid)
288  return ze;
289  return NULL;
290 }
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.
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◆ free_qe()

static void free_qe ( struct GNUNET_NAMESTORE_QueueEntry qe)
static

Free qe.

Parameters
qeentry to free

Definition at line 299 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().

300 {
301  struct GNUNET_NAMESTORE_Handle *h = qe->h;
302 
304  if (NULL != qe->env)
305  GNUNET_MQ_discard (qe->env);
306  if (NULL != qe->timeout_task)
308  GNUNET_free (qe);
309 }
#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:69
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:321
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:965
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◆ free_ze()

static void free_ze ( struct GNUNET_NAMESTORE_ZoneIterator ze)
static

Free ze.

Parameters
zeentry to free

Definition at line 318 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().

319 {
320  struct GNUNET_NAMESTORE_Handle *h = ze->h;
321 
323  if (NULL != ze->env)
324  GNUNET_MQ_discard (ze->env);
325  GNUNET_free (ze);
326 }
#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:321
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.
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◆ 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 339 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().

340 {
341  struct GNUNET_GNSRECORD_Data rd[rd_count];
342 
343  if (GNUNET_OK !=
344  GNUNET_GNSRECORD_records_deserialize (rd_len, rd_buf, rd_count, rd))
345  {
346  GNUNET_break (0);
347  return GNUNET_SYSERR;
348  }
349  return GNUNET_OK;
350 }
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
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:79
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◆ 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 361 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.

363 {
364  struct GNUNET_NAMESTORE_Handle *h = cls;
366  int res;
367  const char *emsg;
368 
369  qe = find_qe (h, ntohl (msg->gns_header.r_id));
370  res = ntohl (msg->op_result);
372  "Received RECORD_STORE_RESPONSE with result %d\n",
373  res);
374  /* TODO: add actual error message from namestore to response... */
375  if (GNUNET_SYSERR == res)
376  emsg = _ ("Namestore failed to store record\n");
377  else
378  emsg = NULL;
379  if (NULL != qe->cont)
380  qe->cont (qe->cont_cls, res, emsg);
381  free_qe (qe);
382 }
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:94
#define _(String)
GNU gettext support macro.
Definition: platform.h:208
int32_t op_result
GNUNET_SYSERR on failure, GNUNET_OK on success
Definition: namestore.h:115
Connection to the NAMESTORE service.
static int res
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
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:74
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:79
static struct GNUNET_NAMESTORE_QueueEntry * find_qe(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the queue entry that matches the rid.
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◆ 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 394 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.

395 {
396  const char *name;
397  size_t exp_msg_len;
398  size_t msg_len;
399  size_t name_len;
400  size_t rd_len;
401 
402  (void) cls;
403  rd_len = ntohs (msg->rd_len);
404  msg_len = ntohs (msg->gns_header.header.size);
405  name_len = ntohs (msg->name_len);
406  exp_msg_len = sizeof (*msg) + name_len + rd_len;
407  if (msg_len != exp_msg_len)
408  {
409  GNUNET_break (0);
410  return GNUNET_SYSERR;
411  }
412  name = (const char *) &msg[1];
413  if ((name_len > 0) && ('\0' != name[name_len - 1]))
414  {
415  GNUNET_break (0);
416  return GNUNET_SYSERR;
417  }
418  if (GNUNET_NO == ntohs (msg->found))
419  {
420  if (0 != ntohs (msg->rd_count))
421  {
422  GNUNET_break (0);
423  return GNUNET_SYSERR;
424  }
425  return GNUNET_OK;
426  }
427  return check_rd (rd_len, &name[name_len], ntohs (msg->rd_count));
428 }
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
#define GNUNET_NO
Definition: gnunet_common.h:81
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
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
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
const char * name
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
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◆ 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 439 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.

440 {
441  struct GNUNET_NAMESTORE_Handle *h = cls;
443  const char *name;
444  const char *rd_tmp;
445  size_t name_len;
446  size_t rd_len;
447  unsigned int rd_count;
448 
449  LOG (GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_LOOKUP_RESULT\n");
450  qe = find_qe (h, ntohl (msg->gns_header.r_id));
451  if (NULL == qe)
452  return;
453  rd_len = ntohs (msg->rd_len);
454  rd_count = ntohs (msg->rd_count);
455  name_len = ntohs (msg->name_len);
456  name = (const char *) &msg[1];
457  if (GNUNET_NO == ntohs (msg->found))
458  {
459  /* label was not in namestore */
460  if (NULL != qe->proc)
461  qe->proc (qe->proc_cls, &msg->private_key, name, 0, NULL);
462  free_qe (qe);
463  return;
464  }
465 
466  rd_tmp = &name[name_len];
467  {
468  struct GNUNET_GNSRECORD_Data rd[rd_count];
469 
470  GNUNET_assert (
471  GNUNET_OK ==
472  GNUNET_GNSRECORD_records_deserialize (rd_len, rd_tmp, rd_count, rd));
473  if (0 == name_len)
474  name = NULL;
475  if (NULL != qe->proc)
476  qe->proc (qe->proc_cls,
477  &msg->private_key,
478  name,
479  rd_count,
480  (rd_count > 0) ? rd : NULL);
481  }
482  free_qe (qe);
483 }
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:84
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.
#define GNUNET_NO
Definition: gnunet_common.h:81
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
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:89
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:158
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: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
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.
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◆ 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 495 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.

496 {
497  static struct GNUNET_CRYPTO_EcdsaPrivateKey priv_dummy;
498  const char *name;
499  size_t msg_len;
500  size_t name_len;
501  size_t rd_len;
502 
503  (void) cls;
504  rd_len = ntohs (msg->rd_len);
505  msg_len = ntohs (msg->gns_header.header.size);
506  name_len = ntohs (msg->name_len);
507  if (0 != ntohs (msg->reserved))
508  {
509  GNUNET_break (0);
510  return GNUNET_SYSERR;
511  }
512  if (msg_len != sizeof (struct RecordResultMessage) + name_len + rd_len)
513  {
514  GNUNET_break (0);
515  return GNUNET_SYSERR;
516  }
517  name = (const char *) &msg[1];
518  if ((0 == name_len) || ('\0' != name[name_len - 1]))
519  {
520  GNUNET_break (0);
521  return GNUNET_SYSERR;
522  }
523  if (0 == GNUNET_memcmp (&msg->private_key, &priv_dummy))
524  {
525  GNUNET_break (0);
526  return GNUNET_SYSERR;
527  }
528  return check_rd (rd_len, &name[name_len], ntohs (msg->rd_count));
529 }
uint16_t reserved
always zero (for alignment)
Definition: namestore.h:283
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:268
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:288
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:278
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
const char * name
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:273
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.
Definition: namestore.h:263
#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:258
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◆ 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 540 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.

541 {
542  struct GNUNET_NAMESTORE_Handle *h = cls;
545  const char *name;
546  const char *rd_tmp;
547  size_t name_len;
548  size_t rd_len;
549  unsigned int rd_count;
550 
551  LOG (GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_RESULT\n");
552  rd_len = ntohs (msg->rd_len);
553  rd_count = ntohs (msg->rd_count);
554  name_len = ntohs (msg->name_len);
555  ze = find_zi (h, ntohl (msg->gns_header.r_id));
556  qe = find_qe (h, ntohl (msg->gns_header.r_id));
557  if ((NULL == ze) && (NULL == qe))
558  return; /* rid not found */
559  if ((NULL != ze) && (NULL != qe))
560  {
561  GNUNET_break (0); /* rid ambigous */
562  force_reconnect (h);
563  return;
564  }
565  name = (const char *) &msg[1];
566  rd_tmp = &name[name_len];
567  {
568  struct GNUNET_GNSRECORD_Data rd[rd_count];
569 
570  GNUNET_assert (
571  GNUNET_OK ==
572  GNUNET_GNSRECORD_records_deserialize (rd_len, rd_tmp, rd_count, rd));
573  if (0 == name_len)
574  name = NULL;
575  if (NULL != qe)
576  {
577  if (NULL != qe->proc)
578  qe->proc (qe->proc_cls,
579  &msg->private_key,
580  name,
581  rd_count,
582  (rd_count > 0) ? rd : NULL);
583  free_qe (qe);
584  return;
585  }
586  if (NULL != ze)
587  {
588  if (NULL != ze->proc)
589  ze->proc (ze->proc_cls, &msg->private_key, name, rd_count, rd);
590  return;
591  }
592  }
593  GNUNET_assert (0);
594 }
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:84
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.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
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:89
#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:268
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:288
Handle for a zone iterator operation.
uint16_t rd_count
Number of records contained.
Definition: namestore.h:278
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:273
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.
Definition: namestore.h:263
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.
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◆ 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 605 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.

606 {
607  struct GNUNET_NAMESTORE_Handle *h = cls;
610 
611  LOG (GNUNET_ERROR_TYPE_DEBUG, "Received RECORD_RESULT_END\n");
612  ze = find_zi (h, ntohl (msg->r_id));
613  qe = find_qe (h, ntohl (msg->r_id));
614  if ((NULL == ze) && (NULL == qe))
615  return; /* rid not found */
616  if ((NULL != ze) && (NULL != qe))
617  {
618  GNUNET_break (0); /* rid ambigous */
619  force_reconnect (h);
620  return;
621  }
622  LOG (GNUNET_ERROR_TYPE_DEBUG, "Zone iteration completed!\n");
623  if (NULL == ze)
624  {
625  GNUNET_break (0);
626  force_reconnect (h);
627  return;
628  }
629  if (NULL != ze->finish_cb)
630  ze->finish_cb (ze->finish_cb_cls);
631  free_ze (ze);
632 }
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: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.
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◆ 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 644 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.

646 {
647  size_t name_len;
648  size_t rd_ser_len;
649  const char *name_tmp;
650 
651  (void) cls;
652  if (GNUNET_OK != ntohs (msg->res))
653  return GNUNET_OK;
654  name_len = ntohs (msg->name_len);
655  rd_ser_len = ntohs (msg->rd_len);
656  if (ntohs (msg->gns_header.header.size) !=
657  sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len)
658  {
659  GNUNET_break (0);
660  return GNUNET_SYSERR;
661  }
662  name_tmp = (const char *) &msg[1];
663  if ((name_len > 0) && ('\0' != name_tmp[name_len - 1]))
664  {
665  GNUNET_break (0);
666  return GNUNET_SYSERR;
667  }
668  return check_rd (rd_ser_len, &name_tmp[name_len], ntohs (msg->rd_count));
669 }
uint16_t name_len
Length of the name.
Definition: namestore.h:224
int16_t res
result in NBO: GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error ...
Definition: namestore.h:240
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
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:234
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.
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
Definition: namestore.h:219
Respone for zone to name lookup.
Definition: namestore.h:214
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:229
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◆ 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 680 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.

682 {
683  struct GNUNET_NAMESTORE_Handle *h = cls;
685  int res;
686  size_t name_len;
687  size_t rd_ser_len;
688  unsigned int rd_count;
689  const char *name_tmp;
690  const char *rd_tmp;
691 
692  LOG (GNUNET_ERROR_TYPE_DEBUG, "Received ZONE_TO_NAME_RESPONSE\n");
693  qe = find_qe (h, ntohl (msg->gns_header.r_id));
694  res = ntohs (msg->res);
695  switch (res)
696  {
697  case GNUNET_SYSERR:
699  "An error occurred during zone to name operation\n");
700  break;
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  case GNUNET_YES:
710  "Namestore has result for zone to name mapping \n");
711  name_len = ntohs (msg->name_len);
712  rd_count = ntohs (msg->rd_count);
713  rd_ser_len = ntohs (msg->rd_len);
714  name_tmp = (const char *) &msg[1];
715  rd_tmp = &name_tmp[name_len];
716  {
717  struct GNUNET_GNSRECORD_Data rd[rd_count];
718 
721  rd_tmp,
722  rd_count,
723  rd));
724  /* normal end, call continuation with result */
725  if (NULL != qe->proc)
726  qe->proc (qe->proc_cls, &msg->zone, name_tmp, rd_count, rd);
727  /* return is important here: break would call continuation with error! */
728  free_qe (qe);
729  return;
730  }
731  default:
732  GNUNET_break (0);
733  force_reconnect (h);
734  return;
735  }
736  /* error case, call continuation with error */
737  if (NULL != qe->error_cb)
738  qe->error_cb (qe->error_cb_cls);
739  free_qe (qe);
740 }
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:84
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:94
uint16_t name_len
Length of the name.
Definition: namestore.h:224
int16_t res
result in NBO: GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error ...
Definition: namestore.h:240
#define GNUNET_NO
Definition: gnunet_common.h:81
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
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:89
void * error_cb_cls
Closure for error_cb.
Definition: namestore_api.c:99
#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:234
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:245
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
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:219
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:229
#define GNUNET_YES
Definition: gnunet_common.h:80
static struct GNUNET_NAMESTORE_QueueEntry * find_qe(struct GNUNET_NAMESTORE_Handle *h, uint32_t rid)
Find the queue entry that matches the rid.
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◆ 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 752 of file namestore_api.c.

References force_reconnect(), and GNUNET_NAMESTORE_QueueEntry::h.

Referenced by reconnect().

753 {
754  struct GNUNET_NAMESTORE_Handle *h = cls;
755 
756  (void) error;
757  force_reconnect (h);
758 }
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.
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◆ reconnect()

static void reconnect ( struct GNUNET_NAMESTORE_Handle h)
static

Reconnect to namestore service.

Parameters
hthe handle to the NAMESTORE service

Definition at line 767 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().

768 {
770  {GNUNET_MQ_hd_fixed_size (record_store_response,
773  h),
774  GNUNET_MQ_hd_var_size (zone_to_name_response,
777  h),
778  GNUNET_MQ_hd_var_size (record_result,
780  struct RecordResultMessage,
781  h),
782  GNUNET_MQ_hd_fixed_size (record_result_end,
785  h),
786  GNUNET_MQ_hd_var_size (lookup_result,
789  h),
793 
794  GNUNET_assert (NULL == h->mq);
795  h->mq =
796  GNUNET_CLIENT_connect (h->cfg, "namestore", handlers, &mq_error_handler, h);
797  if (NULL == h->mq)
798  return;
799  /* re-transmit pending requests that waited for a reconnect... */
800  for (it = h->z_head; NULL != it; it = it->next)
801  {
802  GNUNET_MQ_send (h->mq, it->env);
803  it->env = NULL;
804  }
805  for (qe = h->op_head; NULL != qe; qe = qe->next)
806  {
807  GNUNET_MQ_send (h->mq, qe->env);
808  qe->env = NULL;
809  }
810 }
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:901
#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:59
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:214
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:353
#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:258
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.
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◆ 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 819 of file namestore_api.c.

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

Referenced by force_reconnect().

820 {
821  struct GNUNET_NAMESTORE_Handle *h = cls;
822 
823  h->reconnect_task = NULL;
824  reconnect (h);
825 }
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.
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◆ 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 872 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().

873 {
874  return h->last_op_id_used++;
875 }
uint32_t last_op_id_used
The last operation id used for a NAMESTORE operation.
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◆ 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 947 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().

948 {
949  struct GNUNET_NAMESTORE_QueueEntry *qe = cls;
950 
951  qe->timeout_task = NULL;
953  "Did not receive response from namestore after %s!\n",
955  GNUNET_YES));
956  if (NULL != qe->cont)
957  {
958  qe->cont (qe->cont_cls, GNUNET_SYSERR, "timeout");
959  qe->cont = NULL;
960  }
962 }
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:727
#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:79
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:74
#define LOG(kind,...)
Definition: namestore_api.c:41
void * cont_cls
Closure for cont.
Definition: namestore_api.c:79
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:80
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