GNUnet  0.11.x
Typedefs | Functions
Name Store service

Store naming information on a GNUnet node. More...

Typedefs

typedef void(* GNUNET_NAMESTORE_ContinuationWithStatus) (void *cls, int32_t success, const char *emsg)
 Continuation called to notify client about result of the operation. More...
 
typedef void(* GNUNET_NAMESTORE_RecordMonitor) (void *cls, const struct GNUNET_IDENTITY_PrivateKey *zone, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 Process a record that was stored in the namestore. More...
 

Functions

struct GNUNET_NAMESTORE_HandleGNUNET_NAMESTORE_connect (const struct GNUNET_CONFIGURATION_Handle *cfg)
 Connect to the namestore service. More...
 
void GNUNET_NAMESTORE_disconnect (struct GNUNET_NAMESTORE_Handle *h)
 Disconnect from the namestore service (and free associated resources). More...
 
struct GNUNET_NAMESTORE_QueueEntryGNUNET_NAMESTORE_records_store (struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_IDENTITY_PrivateKey *pkey, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd, GNUNET_NAMESTORE_ContinuationWithStatus cont, void *cont_cls)
 Store an item in the namestore. More...
 
struct GNUNET_NAMESTORE_QueueEntryGNUNET_NAMESTORE_records_lookup (struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_IDENTITY_PrivateKey *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_IDENTITY_PrivateKey *zone, const struct GNUNET_IDENTITY_PublicKey *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...
 
void GNUNET_NAMESTORE_cancel (struct GNUNET_NAMESTORE_QueueEntry *qe)
 Cancel a namestore operation. More...
 
struct GNUNET_NAMESTORE_ZoneIteratorGNUNET_NAMESTORE_zone_iteration_start (struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_IDENTITY_PrivateKey *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...
 
struct GNUNET_NAMESTORE_ZoneMonitorGNUNET_NAMESTORE_zone_monitor_start (const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_IDENTITY_PrivateKey *zone, int iterate_first, GNUNET_SCHEDULER_TaskCallback error_cb, void *error_cb_cls, GNUNET_NAMESTORE_RecordMonitor monitor, void *monitor_cls, GNUNET_SCHEDULER_TaskCallback sync_cb, void *sync_cb_cls)
 Begin monitoring a zone for changes. More...
 
void GNUNET_NAMESTORE_zone_monitor_next (struct GNUNET_NAMESTORE_ZoneMonitor *zm, uint64_t limit)
 Calls the monitor processor specified in GNUNET_NAMESTORE_zone_monitor_start for the next record(s). More...
 
void GNUNET_NAMESTORE_zone_monitor_stop (struct GNUNET_NAMESTORE_ZoneMonitor *zm)
 Stop monitoring a zone for changes. More...
 

Detailed Description

Store naming information on a GNUnet node.

Naming information can either be records for which this peer/user is authoritative, or blocks which are cached, encrypted naming data from other peers.

See also
Documentation

Typedef Documentation

◆ GNUNET_NAMESTORE_ContinuationWithStatus

typedef void(* GNUNET_NAMESTORE_ContinuationWithStatus) (void *cls, int32_t success, const char *emsg)

Continuation called to notify client about result of the operation.

Parameters
clsclosure
successGNUNET_SYSERR on failure (including timeout/queue drop/failure to validate) GNUNET_NO if content was already there or not found GNUNET_YES (or other positive value) on success
emsgNULL on success, otherwise an error message

Definition at line 103 of file gnunet_namestore_service.h.

◆ GNUNET_NAMESTORE_RecordMonitor

typedef void(* GNUNET_NAMESTORE_RecordMonitor) (void *cls, const struct GNUNET_IDENTITY_PrivateKey *zone, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)

Process a record that was stored in the namestore.

Parameters
clsclosure
zoneprivate key of the zone
labellabel of the records
rd_countnumber of entries in rd array, 0 if label was deleted
rdarray of records with data to store

Definition at line 149 of file gnunet_namestore_service.h.

Function Documentation

◆ GNUNET_NAMESTORE_connect()

struct GNUNET_NAMESTORE_Handle* GNUNET_NAMESTORE_connect ( const struct GNUNET_CONFIGURATION_Handle cfg)

Connect to the namestore service.

Parameters
cfgconfiguration to use
Returns
handle to use to access the service

Connect to the namestore service.

Parameters
cfgconfiguration to use
Returns
handle to the GNS service, or NULL on error

Definition at line 893 of file namestore_api.c.

References cfg, GNUNET_NAMESTORE_Handle::cfg, GNUNET_free, GNUNET_new, GNUNET_NAMESTORE_QueueEntry::h, GNUNET_NAMESTORE_Handle::mq, and reconnect().

Referenced by GNUNET_CONVERSATION_phone_create(), libgnunet_plugin_rest_namestore_init(), RECLAIM_TICKETS_init(), run(), run_with_zone_pkey(), and store_cb().

894 {
895  struct GNUNET_NAMESTORE_Handle *h;
896 
897  h = GNUNET_new (struct GNUNET_NAMESTORE_Handle);
898  h->cfg = cfg;
899  reconnect (h);
900  if (NULL == h->mq)
901  {
902  GNUNET_free (h);
903  return NULL;
904  }
905  return h;
906 }
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration to use.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
Connection to the NAMESTORE service.
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
static void reconnect(struct GNUNET_NAMESTORE_Handle *h)
Reconnect to namestore service.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_NAMESTORE_disconnect()

void GNUNET_NAMESTORE_disconnect ( struct GNUNET_NAMESTORE_Handle h)

Disconnect from the namestore service (and free associated resources).

Must not be called from within operation callbacks of the API.

Parameters
hhandle to the namestore
hhandle to the namestore

Definition at line 916 of file namestore_api.c.

References GNUNET_break, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_MQ_destroy(), GNUNET_SCHEDULER_cancel(), LOG, GNUNET_NAMESTORE_Handle::mq, GNUNET_NAMESTORE_Handle::op_head, GNUNET_NAMESTORE_Handle::op_tail, q, GNUNET_NAMESTORE_Handle::reconnect_task, GNUNET_NAMESTORE_Handle::z_head, and GNUNET_NAMESTORE_Handle::z_tail.

Referenced by cleanup(), do_shutdown(), GNUNET_CONVERSATION_phone_destroy(), libgnunet_plugin_rest_namestore_done(), RECLAIM_TICKETS_deinit(), and shutdown_task().

917 {
920 
921  LOG (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
922  GNUNET_break (NULL == h->op_head);
923  while (NULL != (q = h->op_head))
924  {
926  GNUNET_free (q);
927  }
928  GNUNET_break (NULL == h->z_head);
929  while (NULL != (z = h->z_head))
930  {
932  GNUNET_free (z);
933  }
934  if (NULL != h->mq)
935  {
936  GNUNET_MQ_destroy (h->mq);
937  h->mq = NULL;
938  }
939  if (NULL != h->reconnect_task)
940  {
942  h->reconnect_task = NULL;
943  }
944  GNUNET_free (h);
945 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
Handle for a zone iterator operation.
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
static struct GNUNET_REVOCATION_Query * q
Handle for revocation query.
struct GNUNET_NAMESTORE_QueueEntry * op_tail
Tail of pending namestore queue entries.
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
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.
struct GNUNET_SCHEDULER_Task * reconnect_task
Reconnect task.
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:837
struct GNUNET_NAMESTORE_ZoneIterator * z_tail
Tail of pending namestore zone iterator entries.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
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◆ GNUNET_NAMESTORE_records_store()

struct GNUNET_NAMESTORE_QueueEntry* GNUNET_NAMESTORE_records_store ( struct GNUNET_NAMESTORE_Handle h,
const struct GNUNET_IDENTITY_PrivateKey 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.

If the item is already present, it is replaced with the new record. Use an empty array to remove all records under the given name.

The continuation is called after the value has been stored in the database. Monitors may be notified asynchronously (basically with a buffer). However, if any monitor is consistently too slow to keep up with the changes, calling cont will be delayed until the monitors do keep up.

Parameters
hhandle to the namestore
pkeyprivate key of the zone
labelname that is being mapped
rd_countnumber of records in the 'rd' array
rdarray of records with data to store
contcontinuation to call when done
cont_clsclosure for cont
Returns
handle to abort the request

If the item is already present, it is replaced with the new record. Use an empty array to remove all records under the given name.

Parameters
hhandle to the namestore
pkeyprivate key of the zone
labelname that is being mapped (at most 255 characters long)
rd_countnumber of records in the rd array
rdarray of records with data to store
contcontinuation to call when done
cont_clsclosure for cont
Returns
handle to abort the request

Definition at line 988 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::cont, GNUNET_NAMESTORE_QueueEntry::cont_cls, GNUNET_NAMESTORE_QueueEntry::env, get_op_id(), RecordStoreMessage::gns_header, GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_DLL_insert_tail, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_GNSRECORD_records_get_size(), GNUNET_GNSRECORD_records_serialize(), GNUNET_memcpy, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_new, GNUNET_SCHEDULER_add_delayed(), GNUNET_NAMESTORE_QueueEntry::h, LOG, MAX_NAME_LEN, GNUNET_NAMESTORE_Handle::mq, msg, RecordStoreMessage::name_len, NAMESTORE_DELAY_TOLERANCE, GNUNET_NAMESTORE_Handle::op_head, GNUNET_NAMESTORE_QueueEntry::op_id, GNUNET_NAMESTORE_Handle::op_tail, pkey, RecordStoreMessage::private_key, qe, GNUNET_NAMESTORE_Header::r_id, RecordStoreMessage::rd_count, RecordStoreMessage::rd_len, RecordStoreMessage::reserved, GNUNET_NAMESTORE_QueueEntry::timeout_task, and warn_delay().

Referenced by attr_store_task(), cred_add_cb(), del_monitor(), get_existing_record(), handle_attribute_delete_message(), handle_credential_delete_message(), issue_ticket(), move_attr_finished(), namestore_delete(), ns_lookup_cb(), process_result(), process_tickets(), purge_attributes(), revoke_attrs_cb(), run_with_zone_pkey(), rvk_move_attr_cb(), update_tickets(), and zone_to_name_cb().

996 {
998  struct GNUNET_MQ_Envelope *env;
999  char *name_tmp;
1000  char *rd_ser;
1001  ssize_t rd_ser_len;
1002  size_t name_len;
1003  uint32_t rid;
1004  struct RecordStoreMessage *msg;
1005  ssize_t sret;
1006 
1007  name_len = strlen (label) + 1;
1008  if (name_len > MAX_NAME_LEN)
1009  {
1010  GNUNET_break (0);
1011  return NULL;
1012  }
1013  rd_ser_len = GNUNET_GNSRECORD_records_get_size (rd_count, rd);
1014  if (rd_ser_len < 0)
1015  {
1016  GNUNET_break (0);
1017  return NULL;
1018  }
1019  if (rd_ser_len > UINT16_MAX)
1020  {
1021  GNUNET_break (0);
1022  return NULL;
1023  }
1024  rid = get_op_id (h);
1026  qe->h = h;
1027  qe->cont = cont;
1028  qe->cont_cls = cont_cls;
1029  qe->op_id = rid;
1031 
1032  /* setup msg */
1033  env = GNUNET_MQ_msg_extra (msg,
1034  name_len + rd_ser_len,
1036  msg->gns_header.r_id = htonl (rid);
1037  msg->name_len = htons (name_len);
1038  msg->rd_count = htons (rd_count);
1039  msg->rd_len = htons (rd_ser_len);
1040  msg->reserved = htons (0);
1041  msg->private_key = *pkey;
1042 
1043  name_tmp = (char *) &msg[1];
1044  GNUNET_memcpy (name_tmp, label, name_len);
1045  rd_ser = &name_tmp[name_len];
1046  sret = GNUNET_GNSRECORD_records_serialize (rd_count, rd, rd_ser_len, rd_ser);
1047  if ((0 > sret) || (sret != rd_ser_len))
1048  {
1049  GNUNET_break (0);
1050  GNUNET_free (env);
1051  return NULL;
1052  }
1053  GNUNET_assert (rd_ser_len == sret);
1055  "Sending NAMESTORE_RECORD_STORE message for name `%s' with %u records\n",
1056  label,
1057  rd_count);
1058  qe->timeout_task =
1060  if (NULL == h->mq)
1061  {
1062  qe->env = env;
1064  "Delaying NAMESTORE_RECORD_STORE message as namestore is not ready!\n");
1065  }
1066  else
1067  {
1068  GNUNET_MQ_send (h->mq, env);
1069  }
1070  return qe;
1071 }
struct GNUNET_NAMESTORE_Handle * h
Main handle to access the namestore.
Definition: namestore_api.c:68
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE.
Definition: namestore.h:63
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
GNUNET_NETWORK_STRUCT_END ssize_t GNUNET_GNSRECORD_records_get_size(unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Calculate how many bytes we will need to serialize the given records.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
static char * pkey
Public key of the zone to look in, in ASCII.
ssize_t GNUNET_GNSRECORD_records_serialize(unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd, size_t dest_size, char *dest)
Serialize the given records to the given destination buffer.
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.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
uint16_t reserved
always zero (for alignment)
Definition: namestore.h:88
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1269
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:78
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE
Client to service: store records (as authority)
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
#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
uint16_t name_len
Name length.
Definition: namestore.h:73
struct GNUNET_MQ_Envelope * env
Envelope of the message to send to the service, if not yet sent.
static void warn_delay(void *cls)
Task launched to warn the user that the namestore is excessively slow and that a query was thus dropp...
uint16_t rd_count
Number of records contained.
Definition: namestore.h:83
struct GNUNET_IDENTITY_PrivateKey private_key
The private key of the authority.
Definition: namestore.h:93
struct GNUNET_NAMESTORE_QueueEntry * op_tail
Tail of pending namestore queue entries.
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_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
GNUNET_NAMESTORE_ContinuationWithStatus cont
Continuation to call.
Definition: namestore_api.c:73
#define LOG(kind,...)
Definition: namestore_api.c:41
Store a record to the namestore (as authority).
Definition: namestore.h:58
void * cont_cls
Closure for cont.
Definition: namestore_api.c:78
struct GNUNET_NAMESTORE_QueueEntry * op_head
Head of pending namestore queue entries.
#define MAX_NAME_LEN
Maximum length of any name, including 0-termination.
Definition: namecache.h:33
static uint32_t get_op_id(struct GNUNET_NAMESTORE_Handle *h)
Get a fresh operation id to distinguish between namestore requests.
struct GNUNET_SCHEDULER_Task * timeout_task
Task scheduled to warn us if the namestore is way too slow.
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_NAMESTORE_records_lookup()

struct GNUNET_NAMESTORE_QueueEntry* GNUNET_NAMESTORE_records_lookup ( struct GNUNET_NAMESTORE_Handle h,
const struct GNUNET_IDENTITY_PrivateKey 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.

Parameters
hhandle to the namestore
pkeyprivate key of the zone
labelname that is being mapped
error_cbfunction to call on error (i.e. disconnect) the handle is afterwards invalid
error_cb_clsclosure for error_cb
rmfunction to call with the result (with 0 records if we don't have that label); the handle is afterwards invalid
rm_clsclosure for rm
Returns
handle to abort the request
Parameters
hhandle to the namestore
pkeyprivate key of the zone
labelname that is being mapped (at most 255 characters long)
error_cbfunction to call on error (i.e. disconnect)
error_cb_clsclosure for error_cb
rmfunction to call with the result (with 0 records if we don't have that label)
rm_clsclosure for rm
Returns
handle to abort the request

Definition at line 1087 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::env, GNUNET_NAMESTORE_QueueEntry::error_cb, GNUNET_NAMESTORE_QueueEntry::error_cb_cls, get_op_id(), LabelLookupMessage::gns_header, GNUNET_break, GNUNET_CONTAINER_DLL_insert_tail, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_new, GNUNET_NAMESTORE_QueueEntry::h, LabelLookupMessage::label_len, GNUNET_NAMESTORE_Handle::mq, msg, GNUNET_NAMESTORE_Handle::op_head, GNUNET_NAMESTORE_QueueEntry::op_id, GNUNET_NAMESTORE_Handle::op_tail, pkey, GNUNET_NAMESTORE_QueueEntry::proc, GNUNET_NAMESTORE_QueueEntry::proc_cls, qe, GNUNET_NAMESTORE_Header::r_id, and LabelLookupMessage::zone.

Referenced by cred_store_task(), handle_collect(), move_attrs(), namestore_add_or_update(), namestore_get(), RECLAIM_TICKETS_revoke(), run_with_zone_pkey(), and store_cb().

1095 {
1097  struct GNUNET_MQ_Envelope *env;
1098  struct LabelLookupMessage *msg;
1099  size_t label_len;
1100 
1101  if (1 == (label_len = strlen (label) + 1))
1102  {
1103  GNUNET_break (0);
1104  return NULL;
1105  }
1106 
1108  qe->h = h;
1109  qe->error_cb = error_cb;
1110  qe->error_cb_cls = error_cb_cls;
1111  qe->proc = rm;
1112  qe->proc_cls = rm_cls;
1113  qe->op_id = get_op_id (h);
1115 
1116  env = GNUNET_MQ_msg_extra (msg,
1117  label_len,
1119  msg->gns_header.r_id = htonl (qe->op_id);
1120  msg->zone = *pkey;
1121  msg->label_len = htonl (label_len);
1122  GNUNET_memcpy (&msg[1], label, label_len);
1123  if (NULL == h->mq)
1124  qe->env = env;
1125  else
1126  GNUNET_MQ_send (h->mq, env);
1127  return qe;
1128 }
struct GNUNET_NAMESTORE_Handle * h
Main handle to access the namestore.
Definition: namestore_api.c:68
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
uint32_t label_len
Length of the name.
Definition: namestore.h:132
static char * pkey
Public key of the zone to look in, in ASCII.
GNUNET_NAMESTORE_RecordMonitor proc
Function to call with the records we get back; or NULL.
Definition: namestore_api.c:83
static void error_cb(void *cls)
Function called if lookup fails.
Definition: gnunet-abd.c:485
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
GNUNET_SCHEDULER_TaskCallback error_cb
Function to call on errors.
Definition: namestore_api.c:93
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP
Client to service: lookup label.
void * proc_cls
Closure for proc.
Definition: namestore_api.c:88
void * error_cb_cls
Closure for error_cb.
Definition: namestore_api.c:98
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
struct GNUNET_IDENTITY_PrivateKey zone
The private key of the zone to look up in.
Definition: namestore.h:137
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
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.
struct GNUNET_NAMESTORE_QueueEntry * op_tail
Tail of pending namestore queue entries.
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_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
struct GNUNET_NAMESTORE_QueueEntry * op_head
Head of pending namestore queue entries.
static uint32_t get_op_id(struct GNUNET_NAMESTORE_Handle *h)
Get a fresh operation id to distinguish between namestore requests.
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP.
Definition: namestore.h:127
Lookup a label.
Definition: namestore.h:122
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
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◆ GNUNET_NAMESTORE_zone_to_name()

struct GNUNET_NAMESTORE_QueueEntry* GNUNET_NAMESTORE_zone_to_name ( struct GNUNET_NAMESTORE_Handle h,
const struct GNUNET_IDENTITY_PrivateKey zone,
const struct GNUNET_IDENTITY_PublicKey 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.

Returns at most one result to the processor.

Parameters
hhandle to the namestore
zoneprivate key of the zone to look up in, never NULL
value_zonepublic key of the target zone (value), never NULL
error_cbfunction to call on error (i.e. disconnect) the handle is afterwards invalid
error_cb_clsclosure for error_cb
procfunction to call on the matching records, or with NULL (rd_count == 0) if there are no matching records; the handle is afterwards invalid
proc_clsclosure for proc
Returns
a handle that can be used to cancel

Returns at most one result to the processor.

Parameters
hhandle to the namestore
zonepublic key of the zone to look up in, never NULL
value_zonepublic key of the target zone (value), never NULL
error_cbfunction to call on error (i.e. disconnect)
error_cb_clsclosure for error_cb
procfunction to call on the matching records, or with NULL (rd_count == 0) if there are no matching records
proc_clsclosure for proc
Returns
a handle that can be used to cancel

Definition at line 1147 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::env, GNUNET_NAMESTORE_QueueEntry::error_cb, GNUNET_NAMESTORE_QueueEntry::error_cb_cls, get_op_id(), ZoneToNameMessage::gns_header, GNUNET_CONTAINER_DLL_insert_tail, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_new, GNUNET_NAMESTORE_QueueEntry::h, GNUNET_NAMESTORE_Handle::mq, msg, GNUNET_NAMESTORE_Handle::op_head, GNUNET_NAMESTORE_QueueEntry::op_id, GNUNET_NAMESTORE_Handle::op_tail, GNUNET_NAMESTORE_QueueEntry::proc, GNUNET_NAMESTORE_QueueEntry::proc_cls, qe, GNUNET_NAMESTORE_Header::r_id, ZoneToNameMessage::value_zone, ZoneToNameMessage::zone, and zone.

Referenced by lookup_it_finished(), and run_with_zone_pkey().

1155 {
1157  struct GNUNET_MQ_Envelope *env;
1158  struct ZoneToNameMessage *msg;
1159  uint32_t rid;
1160 
1161  rid = get_op_id (h);
1163  qe->h = h;
1164  qe->error_cb = error_cb;
1165  qe->error_cb_cls = error_cb_cls;
1166  qe->proc = proc;
1167  qe->proc_cls = proc_cls;
1168  qe->op_id = rid;
1170 
1172  msg->gns_header.r_id = htonl (rid);
1173  msg->zone = *zone;
1174  msg->value_zone = *value_zone;
1175  if (NULL == h->mq)
1176  qe->env = env;
1177  else
1178  GNUNET_MQ_send (h->mq, env);
1179  return qe;
1180 }
struct GNUNET_NAMESTORE_Handle * h
Main handle to access the namestore.
Definition: namestore_api.c:68
static struct GNUNET_DATASTORE_QueueEntry * qe
Current operation.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
GNUNET_NAMESTORE_RecordMonitor proc
Function to call with the records we get back; or NULL.
Definition: namestore_api.c:83
static void error_cb(void *cls)
Function called if lookup fails.
Definition: gnunet-abd.c:485
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
GNUNET_SCHEDULER_TaskCallback error_cb
Function to call on errors.
Definition: namestore_api.c:93
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME.
Definition: namestore.h:196
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_new(type)
Allocate a struct or union of the given type.
void * proc_cls
Closure for proc.
Definition: namestore_api.c:88
void * error_cb_cls
Closure for error_cb.
Definition: namestore_api.c:98
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
static char * zone
Name of the zone we manage.
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.
#define GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME
Client to service: "reverse" lookup for zone name based on zone key.
struct GNUNET_NAMESTORE_QueueEntry * op_tail
Tail of pending namestore queue entries.
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_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
struct GNUNET_NAMESTORE_QueueEntry * op_head
Head of pending namestore queue entries.
struct GNUNET_IDENTITY_PublicKey value_zone
The public key of the target zone.
Definition: namestore.h:206
static uint32_t get_op_id(struct GNUNET_NAMESTORE_Handle *h)
Get a fresh operation id to distinguish between namestore requests.
Lookup a name for a zone hash.
Definition: namestore.h:191
struct GNUNET_IDENTITY_PrivateKey zone
The private key of the zone to look up in.
Definition: namestore.h:201
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
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◆ GNUNET_NAMESTORE_cancel()

void GNUNET_NAMESTORE_cancel ( struct GNUNET_NAMESTORE_QueueEntry qe)

Cancel a namestore operation.

The final callback from the operation must not have been done yet. Must be called on any namestore operation that has not yet completed prior to calling GNUNET_NAMESTORE_disconnect.

Parameters
qeoperation to cancel

The final callback from the operation must not have been done yet.

Parameters
qeoperation to cancel

Definition at line 1301 of file namestore_api.c.

References free_qe().

Referenced by cleanup_adh(), cleanup_as_handle(), cleanup_handle(), cleanup_issue_handle(), cleanup_rvk(), do_shutdown(), request_completed_callback(), and warn_delay().

1302 {
1303  free_qe (qe);
1304 }
static void free_qe(struct GNUNET_NAMESTORE_QueueEntry *qe)
Free qe.
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◆ GNUNET_NAMESTORE_zone_iteration_start()

struct GNUNET_NAMESTORE_ZoneIterator* GNUNET_NAMESTORE_zone_iteration_start ( struct GNUNET_NAMESTORE_Handle h,
const struct GNUNET_IDENTITY_PrivateKey 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).

This MUST lock the struct GNUNET_NAMESTORE_Handle for any other calls than GNUNET_NAMESTORE_zone_iterator_next() and GNUNET_NAMESTORE_zone_iteration_stop. proc will be called once immediately, and then again after GNUNET_NAMESTORE_zone_iterator_next() is invoked.

On error (disconnect), error_cb will be invoked. On normal completion, finish_cb proc will be invoked.

Parameters
hhandle to the namestore
zonezone to access, NULL for all zones
error_cbfunction to call on error (i.e. disconnect), the handle is afterwards invalid
error_cb_clsclosure for error_cb
procfunction to call on each name from the zone; it will be called repeatedly with a value (if available)
proc_clsclosure for proc
finish_cbfunction to call on completion the handle is afterwards invalid
finish_cb_clsclosure for finish_cb
Returns
an iterator handle to use for iteration

This MUST lock the struct GNUNET_NAMESTORE_Handle for any other calls than GNUNET_NAMESTORE_zone_iterator_next and GNUNET_NAMESTORE_zone_iteration_stop. proc will be called once immediately, and then again after GNUNET_NAMESTORE_zone_iterator_next is invoked.

Parameters
hhandle to the namestore
zonezone to access, NULL for all zones
error_cbfunction to call on error (i.e. disconnect)
error_cb_clsclosure for error_cb
procfunction to call on each name from the zone; it will be called repeatedly with a value (if available)
proc_clsclosure for proc
finish_cbfunction to call on completion
finish_cb_clsclosure for finish_cb
Returns
an iterator handle to use for iteration

Definition at line 1203 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::env, GNUNET_NAMESTORE_ZoneIterator::env, GNUNET_NAMESTORE_QueueEntry::error_cb, GNUNET_NAMESTORE_ZoneIterator::error_cb, GNUNET_NAMESTORE_QueueEntry::error_cb_cls, GNUNET_NAMESTORE_ZoneIterator::error_cb_cls, GNUNET_NAMESTORE_ZoneIterator::finish_cb, GNUNET_NAMESTORE_ZoneIterator::finish_cb_cls, get_op_id(), ZoneIterationStartMessage::gns_header, GNUNET_CONTAINER_DLL_insert_tail, GNUNET_ERROR_TYPE_DEBUG, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_new, GNUNET_NAMESTORE_QueueEntry::h, GNUNET_NAMESTORE_ZoneIterator::h, LOG, GNUNET_NAMESTORE_Handle::mq, msg, GNUNET_NAMESTORE_ZoneIterator::op_id, GNUNET_NAMESTORE_QueueEntry::proc, GNUNET_NAMESTORE_ZoneIterator::proc, GNUNET_NAMESTORE_QueueEntry::proc_cls, GNUNET_NAMESTORE_ZoneIterator::proc_cls, GNUNET_NAMESTORE_Header::r_id, GNUNET_NAMESTORE_Handle::z_head, GNUNET_NAMESTORE_Handle::z_tail, GNUNET_NAMESTORE_ZoneIterator::zone, zone, and ZoneIterationStartMessage::zone.

Referenced by create_response(), get_ego(), handle_credential_iteration_start(), handle_iteration_start(), iterate_zones(), move_attrs(), namestore_get(), publish_zone_dht_start(), RECLAIM_TICKETS_issue(), RECLAIM_TICKETS_iteration_start(), run_with_zone_pkey(), start_consistency_update(), and update_zoneinfo_page().

1212 {
1213  struct GNUNET_NAMESTORE_ZoneIterator *it;
1214  struct GNUNET_MQ_Envelope *env;
1216  uint32_t rid;
1217 
1218  LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending ZONE_ITERATION_START message\n");
1219  rid = get_op_id (h);
1221  it->h = h;
1222  it->error_cb = error_cb;
1223  it->error_cb_cls = error_cb_cls;
1224  it->finish_cb = finish_cb;
1225  it->finish_cb_cls = finish_cb_cls;
1226  it->proc = proc;
1227  it->proc_cls = proc_cls;
1228  it->op_id = rid;
1229  if (NULL != zone)
1230  it->zone = *zone;
1233  msg->gns_header.r_id = htonl (rid);
1234  if (NULL != zone)
1235  msg->zone = *zone;
1236  if (NULL == h->mq)
1237  it->env = env;
1238  else
1239  GNUNET_MQ_send (h->mq, env);
1240  return it;
1241 }
GNUNET_SCHEDULER_TaskCallback error_cb
Function to call on errors.
struct GNUNET_MQ_Envelope * env
Envelope of the message to send to the service, if not yet sent.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
GNUNET_SCHEDULER_TaskCallback finish_cb
Function to call on completion.
static void error_cb(void *cls)
Function called if lookup fails.
Definition: gnunet-abd.c:485
GNUNET_NAMESTORE_RecordMonitor proc
The continuation to call with the results.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
uint32_t op_id
The operation id this zone iteration operation has.
Start a zone iteration for the given zone.
Definition: namestore.h:345
void * proc_cls
Closure for proc.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_new(type)
Allocate a struct or union of the given type.
void * error_cb_cls
Closure for error_cb.
struct GNUNET_IDENTITY_PrivateKey zone
Zone key.
Definition: namestore.h:355
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
static char * zone
Name of the zone we manage.
Handle for a zone iterator operation.
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START.
Definition: namestore.h:350
#define GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START
Client to service: please start iteration; receives "GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPON...
struct GNUNET_NAMESTORE_Handle * h
Main handle to access the namestore.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
#define LOG(kind,...)
Definition: namestore_api.c:41
void * finish_cb_cls
Closure for error_cb.
struct GNUNET_NAMESTORE_ZoneIterator * z_head
Head of pending namestore zone iterator entries.
static uint32_t get_op_id(struct GNUNET_NAMESTORE_Handle *h)
Get a fresh operation id to distinguish between namestore requests.
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
struct GNUNET_NAMESTORE_ZoneIterator * z_tail
Tail of pending namestore zone iterator entries.
struct GNUNET_IDENTITY_PrivateKey zone
Private key of the zone.
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◆ GNUNET_NAMESTORE_zone_iterator_next()

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.

Parameters
itthe iterator
limitnumber of records to return to the iterator in one shot (before GNUNET_NAMESTORE_zone_iterator_next is to be called again)

Definition at line 1253 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::env, ZoneIterationNextMessage::gns_header, GNUNET_ERROR_TYPE_DEBUG, GNUNET_htonll(), GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NAMESTORE_QueueEntry::h, GNUNET_NAMESTORE_ZoneIterator::h, ZoneIterationNextMessage::limit, LOG, GNUNET_NAMESTORE_Handle::mq, msg, GNUNET_NAMESTORE_ZoneIterator::op_id, and GNUNET_NAMESTORE_Header::r_id.

Referenced by attr_iter_cb(), collect_tickets_cb(), consistency_iter(), cred_iter_cb(), display_record(), display_record_iterator(), filter_tickets_cb(), handle_credential_iteration_next(), handle_iteration_next(), iterate_cb(), lookup_it_processor(), namestore_list_iteration(), ns_lookup_result_cb(), publish_zone_namestore_next(), RECLAIM_TICKETS_iteration_next(), rvk_ticket_update(), and zone_iterator().

1255 {
1256  struct GNUNET_NAMESTORE_Handle *h = it->h;
1257  struct ZoneIterationNextMessage *msg;
1258  struct GNUNET_MQ_Envelope *env;
1259 
1261  "Sending ZONE_ITERATION_NEXT message with limit %llu\n",
1262  (unsigned long long) limit);
1264  msg->gns_header.r_id = htonl (it->op_id);
1265  msg->limit = GNUNET_htonll (limit);
1266  GNUNET_MQ_send (h->mq, env);
1267 }
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
Ask for next result of zone iteration for the given operation.
Definition: namestore.h:362
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
uint32_t op_id
The operation id this zone iteration operation has.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
Connection to the NAMESTORE service.
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
uint64_t GNUNET_htonll(uint64_t n)
Convert unsigned 64-bit integer to network byte order.
Definition: common_endian.c:36
#define GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT
Client to service: next record(s) in iteration please.
struct GNUNET_NAMESTORE_Handle * h
Main handle to access the namestore.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define LOG(kind,...)
Definition: namestore_api.c:41
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
uint64_t limit
Number of records to return to the iterator in one shot (before GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_IT...
Definition: namestore.h:374
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT.
Definition: namestore.h:367
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◆ GNUNET_NAMESTORE_zone_iteration_stop()

void GNUNET_NAMESTORE_zone_iteration_stop ( struct GNUNET_NAMESTORE_ZoneIterator it)

Stops iteration and releases the namestore handle for further calls.

Must be called on any iteration that has not yet completed prior to calling GNUNET_NAMESTORE_disconnect.

Parameters
itthe iterator
itthe iterator

Definition at line 1276 of file namestore_api.c.

References GNUNET_NAMESTORE_QueueEntry::env, free_ze(), ZoneIterationStopMessage::gns_header, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NAMESTORE_QueueEntry::h, GNUNET_NAMESTORE_ZoneIterator::h, GNUNET_NAMESTORE_Handle::mq, msg, GNUNET_NAMESTORE_ZoneIterator::op_id, and GNUNET_NAMESTORE_Header::r_id.

Referenced by cleanup_adh(), cleanup_handle(), cleanup_iter(), cleanup_rvk(), do_shutdown(), filter_tickets_cb(), RECLAIM_TICKETS_iteration_stop(), and shutdown_task().

1277 {
1278  struct GNUNET_NAMESTORE_Handle *h = it->h;
1279  struct GNUNET_MQ_Envelope *env;
1280  struct ZoneIterationStopMessage *msg;
1281 
1282  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending ZONE_ITERATION_STOP message\n");
1283  if (NULL != h->mq)
1284  {
1285  env =
1287  msg->gns_header.r_id = htonl (it->op_id);
1288  GNUNET_MQ_send (h->mq, env);
1289  }
1290  free_ze (it);
1291 }
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:51
uint32_t op_id
The operation id this zone iteration operation has.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP
Client to service: stop iterating.
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
static void free_ze(struct GNUNET_NAMESTORE_ZoneIterator *ze)
Free ze.
Connection to the NAMESTORE service.
struct GNUNET_MQ_Handle * mq
Connection to the service (if available).
Stop zone iteration for the given operation.
Definition: namestore.h:381
struct GNUNET_NAMESTORE_Handle * h
Main handle to access the namestore.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_log(kind,...)
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP.
Definition: namestore.h:386
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◆ GNUNET_NAMESTORE_zone_monitor_start()

struct GNUNET_NAMESTORE_ZoneMonitor* GNUNET_NAMESTORE_zone_monitor_start ( const struct GNUNET_CONFIGURATION_Handle cfg,
const struct GNUNET_IDENTITY_PrivateKey zone,
int  iterate_first,
GNUNET_SCHEDULER_TaskCallback  error_cb,
void *  error_cb_cls,
GNUNET_NAMESTORE_RecordMonitor  monitor,
void *  monitor_cls,
GNUNET_SCHEDULER_TaskCallback  sync_cb,
void *  sync_cb_cls 
)

Begin monitoring a zone for changes.

Will first call the monitor function on all existing records in the selected zone(s) if iterate_first is GNUNET_YES. In any case, we will then call sync_cb, and then afterwards call the monitor whenever a record changes. If the namestore disconnects, the error_cb function is called with a disconnect event. Once the connection is re-established, the process begins from the start (depending on iterate_first, we will again first do all existing records, then sync, then updates).

Parameters
cfgconfiguration to use to connect to namestore
zonezone to monitor, NULL for all zones
iterate_firstGNUNET_YES to first iterate over all existing records, GNUNET_NO to only return changes that happen from now on
error_cbfunction to call on error (i.e. disconnect); note that unlike the other error callbacks in this API, a call to this function does NOT destroy the monitor handle, it merely signals that monitoring is down. You need to still explicitly call GNUNET_NAMESTORE_zone_monitor_stop().
error_cb_clsclosure for error_cb
monitorfunction to call on zone changes, with an initial limit of 1
monitor_clsclosure for monitor
sync_cbfunction called when we're in sync with the namestore
sync_cb_clsclosure for sync_cb
Returns
handle to stop monitoring

If iterate_first is set, we Will first call the monitor function on all existing records in the selected zone(s). In any case, we will call sync and afterwards call monitor whenever a record changes.

Parameters
cfgconfiguration to use to connect to namestore
zonezone to monitor
iterate_firstGNUNET_YES to first iterate over all existing records, GNUNET_NO to only return changes that happen from now on
error_cbfunction to call on error (i.e. disconnect); note that unlike the other error callbacks in this API, a call to this function does NOT destroy the monitor handle, it merely signals that monitoring is down. You need to still explicitly call GNUNET_NAMESTORE_zone_monitor_stop().
error_cb_clsclosure for error_cb
monitorfunction to call on zone changes
monitor_clsclosure for monitor
sync_cbfunction called when we're in sync with the namestore
clsclosure for sync_cb
Returns
handle to stop monitoring

Definition at line 303 of file namestore_api_monitor.c.

References GNUNET_NAMESTORE_ZoneMonitor::cfg, GNUNET_NAMESTORE_ZoneMonitor::error_cb, GNUNET_NAMESTORE_ZoneMonitor::error_cb_cls, GNUNET_free, GNUNET_new, GNUNET_NAMESTORE_ZoneMonitor::iterate_first, GNUNET_NAMESTORE_ZoneMonitor::monitor, GNUNET_NAMESTORE_ZoneMonitor::monitor_cls, GNUNET_NAMESTORE_ZoneMonitor::mq, reconnect(), GNUNET_NAMESTORE_ZoneMonitor::sync_cb, GNUNET_NAMESTORE_ZoneMonitor::sync_cb_cls, zm, and GNUNET_NAMESTORE_ZoneMonitor::zone.

Referenced by run(), and run_with_zone_pkey().

313 {
315 
317  if (NULL != zone)
318  zm->zone = *zone;
320  zm->error_cb = error_cb;
322  zm->monitor = monitor;
323  zm->monitor_cls = monitor_cls;
324  zm->sync_cb = sync_cb;
325  zm->sync_cb_cls = sync_cb_cls;
326  zm->cfg = cfg;
327  reconnect (zm);
328  if (NULL == zm->mq)
329  {
330  GNUNET_free (zm);
331  return NULL;
332  }
333  return zm;
334 }
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
struct GNUNET_MQ_Handle * mq
Handle to namestore service.
void * error_cb_cls
Closure for error_cb.
static void sync_cb(void *cls)
Function called once we are in sync in monitor mode.
static void error_cb(void *cls)
Function called if lookup fails.
Definition: gnunet-abd.c:485
struct GNUNET_IDENTITY_PrivateKey zone
Monitored zone.
static struct GNUNET_NAMESTORE_ZoneMonitor * zm
Monitor handle.
static void reconnect(struct GNUNET_NAMESTORE_ZoneMonitor *zm)
Reconnect to the namestore service.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration (to reconnect).
GNUNET_SCHEDULER_TaskCallback sync_cb
Function called when we&#39;ve synchronized.
GNUNET_NAMESTORE_RecordMonitor monitor
Function to call on events.
static char * zone
Name of the zone we manage.
Handle for a monitoring activity.
int iterate_first
Do we first iterate over all existing records?
void * sync_cb_cls
Closure for sync_cb.
static int monitor
Monitor ARM activity.
Definition: gnunet-arm.c:64
GNUNET_SCHEDULER_TaskCallback error_cb
Function to call on errors.
void * monitor_cls
Closure for monitor.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_NAMESTORE_zone_monitor_next()

void GNUNET_NAMESTORE_zone_monitor_next ( struct GNUNET_NAMESTORE_ZoneMonitor zm,
uint64_t  limit 
)

Calls the monitor processor specified in GNUNET_NAMESTORE_zone_monitor_start for the next record(s).

This function is used to allow clients that merely monitor the NAMESTORE to still throttle namestore operations, so we can be sure that the monitors can keep up.

Note that GNUNET_NAMESTORE_records_store() only waits for this call if the previous limit set by the client was already reached. Thus, by using a limit greater than 1, monitors basically enable a queue of notifications to be processed asynchronously with some delay. Note that even with a limit of 1 the GNUNET_NAMESTORE_records_store() function will run asynchronously and the continuation may be invoked before the monitors completed (or even started) processing the notification. Thus, monitors will only closely track the current state of the namestore, but not be involved in the transactions.

Parameters
zmthe monitor
limitnumber of records to return to the iterator in one shot (before GNUNET_NAMESTORE_zone_monitor_next is to be called again)

Definition at line 359 of file namestore_api_monitor.c.

References env, GNUNET_htonll(), GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_NEXT, GNUNET_MQ_msg, GNUNET_MQ_send(), ZoneMonitorNextMessage::limit, and GNUNET_NAMESTORE_ZoneMonitor::mq.

Referenced by dht_put_monitor_continuation(), display_record_monitor(), handle_monitor_event(), and run().

361 {
362  struct GNUNET_MQ_Envelope *env;
363  struct ZoneMonitorNextMessage *nm;
364 
366  nm->limit = GNUNET_htonll (limit);
367  GNUNET_MQ_send (zm->mq, env);
368 }
struct GNUNET_MQ_Handle * mq
Handle to namestore service.
#define GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_NEXT
Client to service: I am now ready for the next (set of) monitor events.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
uint64_t limit
Number of records to return to the iterator in one shot (before #GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_M...
Definition: namestore.h:338
uint64_t GNUNET_htonll(uint64_t n)
Convert unsigned 64-bit integer to network byte order.
Definition: common_endian.c:36
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
Ask for next result of zone iteration for the given operation.
Definition: namestore.h:321
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
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◆ GNUNET_NAMESTORE_zone_monitor_stop()

void GNUNET_NAMESTORE_zone_monitor_stop ( struct GNUNET_NAMESTORE_ZoneMonitor zm)

Stop monitoring a zone for changes.

Parameters
zmhandle to the monitor activity to stop

Definition at line 377 of file namestore_api_monitor.c.

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

Referenced by do_shutdown(), and shutdown_task().

378 {
379  if (NULL != zm->mq)
380  {
381  GNUNET_MQ_destroy (zm->mq);
382  zm->mq = NULL;
383  }
384  GNUNET_free (zm);
385 }
struct GNUNET_MQ_Handle * mq
Handle to namestore service.
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:837
#define GNUNET_free(ptr)
Wrapper around free.
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