GNUnet  0.10.x
Data Structures | Macros | Functions | Variables
gnunet-service-namestore.c File Reference

namestore for the GNUnet naming system More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_dnsparser_lib.h"
#include "gnunet_gns_service.h"
#include "gnunet_namecache_service.h"
#include "gnunet_namestore_service.h"
#include "gnunet_namestore_plugin.h"
#include "gnunet_statistics_service.h"
#include "gnunet_signatures.h"
#include "namestore.h"
Include dependency graph for gnunet-service-namestore.c:

Go to the source code of this file.

Data Structures

struct  ZoneIteration
 A namestore iteration operation. More...
 
struct  NamestoreClient
 A namestore client. More...
 
struct  ZoneMonitor
 A namestore monitor. More...
 
struct  CacheOperation
 Pending operation on the namecache. More...
 
struct  StoreActivity
 Information for an ongoing handle_record_store() operation. More...
 
struct  NickCache
 Entry in list of cached nick resolutions. More...
 
struct  RecordLookupContext
 Closure for lookup_it(). More...
 
struct  ZoneToNameCtx
 Context for record remove operations passed from handle_zone_to_name to handle_zone_to_name_it as closure. More...
 
struct  ZoneIterationProcResult
 Context for record remove operations passed from run_zone_iteration_round to zone_iterate_proc as closure. More...
 

Macros

#define LOG_STRERROR_FILE(kind, syscall, filename)   GNUNET_log_from_strerror_file(kind, "util", syscall, filename)
 
#define MONITOR_STALL_WARN_DELAY   GNUNET_TIME_UNIT_MINUTES
 If a monitor takes more than 1 minute to process an event, print a warning. More...
 
#define NC_SIZE   16
 Size of the cache used by get_nick_record() More...
 

Functions

static void cleanup_task (void *cls)
 Task run during shutdown. More...
 
static void free_store_activity (struct StoreActivity *sa)
 Release memory used by sa. More...
 
static void lookup_nick_it (void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *private_key, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 Function called with the records for the GNUNET_GNS_EMPTY_LABEL_AT label in the zone. More...
 
static void cache_nick (const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const struct GNUNET_GNSRECORD_Data *nick)
 Add entry to the cache for zone and nick. More...
 
static struct GNUNET_GNSRECORD_Dataget_nick_record (const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone)
 Return the NICK record for the zone (if it exists). More...
 
static void merge_with_nick_records (const struct GNUNET_GNSRECORD_Data *nick_rd, unsigned int rd2_length, const struct GNUNET_GNSRECORD_Data *rd2, unsigned int *rdc_res, struct GNUNET_GNSRECORD_Data **rd_res)
 Merge the nick record nick_rd with the rest of the record set given in rd2. More...
 
static void send_lookup_response (struct NamestoreClient *nc, uint32_t request_id, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 Generate a struct LookupNameResponseMessage and send it to the given client using the given notification context. More...
 
static void send_store_response (struct NamestoreClient *nc, int res, uint32_t rid)
 Send response to the store request to the client. More...
 
static void zone_iteration_done_client_continue (struct ZoneIteration *zi)
 Function called once we are done with the zone iteration and allow the zone iteration client to send us more messages. More...
 
static void finish_cache_operation (void *cls, int32_t success, const char *emsg)
 Cache operation complete, clean up. More...
 
static void refresh_block (struct NamestoreClient *nc, struct ZoneIteration *zi, uint32_t rid, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 We just touched the plaintext information about a name in our zone; refresh the corresponding (encrypted) block in the namecache. More...
 
static void warn_monitor_slow (void *cls)
 Print a warning that one of our monitors is no longer reacting. More...
 
static void continue_store_activity (struct StoreActivity *sa)
 Continue processing the sa. More...
 
static void client_disconnect_cb (void *cls, struct GNUNET_SERVICE_Client *client, void *app_ctx)
 Called whenever a client is disconnected. More...
 
static void * client_connect_cb (void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
 Add a client to our list of active clients. More...
 
static void lookup_it (void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *private_key, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 Function called by the namestore plugin when we are trying to lookup a record as part of handle_record_lookup(). More...
 
static int check_record_lookup (void *cls, const struct LabelLookupMessage *ll_msg)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP message. More...
 
static void handle_record_lookup (void *cls, const struct LabelLookupMessage *ll_msg)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP message. More...
 
static int check_record_store (void *cls, const struct RecordStoreMessage *rp_msg)
 Checks a GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE message. More...
 
static void handle_record_store (void *cls, const struct RecordStoreMessage *rp_msg)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE message. More...
 
static void handle_zone_to_name_it (void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 Zone to name iterator. More...
 
static void handle_zone_to_name (void *cls, const struct ZoneToNameMessage *ztn_msg)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME message. More...
 
static void zone_iterate_proc (void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 Process results for zone iteration from database. More...
 
static void run_zone_iteration_round (struct ZoneIteration *zi, uint64_t limit)
 Perform the next round of the zone iteration. More...
 
static void handle_iteration_start (void *cls, const struct ZoneIterationStartMessage *zis_msg)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START message. More...
 
static void handle_iteration_stop (void *cls, const struct ZoneIterationStopMessage *zis_msg)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP message. More...
 
static void handle_iteration_next (void *cls, const struct ZoneIterationNextMessage *zis_msg)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT message. More...
 
static void monitor_unblock (struct ZoneMonitor *zm)
 Function called when the monitor is ready for more data, and we should thus unblock PUT operations that were blocked on the monitor not being ready. More...
 
static void monitor_sync (struct ZoneMonitor *zm)
 Send 'sync' message to zone monitor, we're now in sync. More...
 
static void monitor_iteration_next (void *cls)
 Obtain the next datum during the zone monitor's zone initial iteration. More...
 
static void monitor_iterate_cb (void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 A GNUNET_NAMESTORE_RecordIterator for monitors. More...
 
static void handle_monitor_start (void *cls, const struct ZoneMonitorStartMessage *zis_msg)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_START message. More...
 
static void handle_monitor_next (void *cls, const struct ZoneMonitorNextMessage *nm)
 Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_NEXT message. More...
 
static void run (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg, struct GNUNET_SERVICE_Handle *service)
 Process namestore requests. More...
 
 GNUNET_SERVICE_MAIN ("namestore", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_var_size(record_store, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE, struct RecordStoreMessage, NULL), GNUNET_MQ_hd_var_size(record_lookup, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP, struct LabelLookupMessage, NULL), GNUNET_MQ_hd_fixed_size(zone_to_name, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, struct ZoneToNameMessage, NULL), GNUNET_MQ_hd_fixed_size(iteration_start, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, struct ZoneIterationStartMessage, NULL), GNUNET_MQ_hd_fixed_size(iteration_next, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, struct ZoneIterationNextMessage, NULL), GNUNET_MQ_hd_fixed_size(iteration_stop, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, struct ZoneIterationStopMessage, NULL), GNUNET_MQ_hd_fixed_size(monitor_start, GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_START, struct ZoneMonitorStartMessage, NULL), GNUNET_MQ_hd_fixed_size(monitor_next, GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_NEXT, struct ZoneMonitorNextMessage, NULL), GNUNET_MQ_handler_end())
 Define "main" method using service macro. More...
 

Variables

static struct NickCache nick_cache [16]
 We cache nick records to reduce DB load. More...
 
static const struct GNUNET_CRYPTO_EcdsaPrivateKey zero
 Public key of all zeros. More...
 
static const struct GNUNET_CONFIGURATION_HandleGSN_cfg
 Configuration handle. More...
 
static struct GNUNET_STATISTICS_Handlestatistics
 Handle to the statistics service. More...
 
static struct GNUNET_NAMECACHE_Handlenamecache
 Namecache handle. More...
 
static struct GNUNET_NAMESTORE_PluginFunctionsGSN_database
 Database handle. More...
 
static char * db_lib_name
 Name of the database plugin. More...
 
static struct CacheOperationcop_head
 Head of cop DLL. More...
 
static struct CacheOperationcop_tail
 Tail of cop DLL. More...
 
static struct ZoneMonitormonitor_head
 First active zone monitor. More...
 
static struct ZoneMonitormonitor_tail
 Last active zone monitor. More...
 
static struct StoreActivitysa_head
 Head of DLL of monitor-blocked store activities. More...
 
static struct StoreActivitysa_tail
 Tail of DLL of monitor-blocked store activities. More...
 
static struct GNUNET_NotificationContextmonitor_nc
 Notification context shared by all monitors. More...
 
static int cache_keys
 Optimize block insertion by caching map of private keys to public keys in memory? More...
 
static int disable_namecache
 Use the namecache? Doing so creates additional cryptographic operations whenever we touch a record. More...
 

Detailed Description

namestore for the GNUnet naming system

Author
Matthias Wachs
Christian Grothoff

Definition in file gnunet-service-namestore.c.

Macro Definition Documentation

◆ LOG_STRERROR_FILE

#define LOG_STRERROR_FILE (   kind,
  syscall,
  filename 
)    GNUNET_log_from_strerror_file(kind, "util", syscall, filename)

Definition at line 38 of file gnunet-service-namestore.c.

◆ MONITOR_STALL_WARN_DELAY

#define MONITOR_STALL_WARN_DELAY   GNUNET_TIME_UNIT_MINUTES

If a monitor takes more than 1 minute to process an event, print a warning.

Definition at line 44 of file gnunet-service-namestore.c.

Referenced by continue_store_activity(), handle_monitor_next(), monitor_unblock(), and warn_monitor_slow().

◆ NC_SIZE

#define NC_SIZE   16

Size of the cache used by get_nick_record()

Definition at line 49 of file gnunet-service-namestore.c.

Referenced by cache_nick(), and get_nick_record().

Function Documentation

◆ cleanup_task()

static void cleanup_task ( void *  cls)
static

Task run during shutdown.

Parameters
clsunused

Definition at line 414 of file gnunet-service-namestore.c.

References db_lib_name, GNUNET_break, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_log, GNUNET_NAMECACHE_cancel(), GNUNET_NAMECACHE_disconnect(), GNUNET_NO, GNUNET_notification_context_destroy(), GNUNET_PLUGIN_unload(), GNUNET_STATISTICS_destroy(), and CacheOperation::qe.

Referenced by run().

415 {
416  struct CacheOperation *cop;
417 
418  (void)cls;
419  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Stopping namestore service\n");
420  while (NULL != (cop = cop_head))
421  {
423  "Aborting incomplete namecache operation\n");
426  GNUNET_free(cop);
427  }
428  if (NULL != namecache)
429  {
431  namecache = NULL;
432  }
435  db_lib_name = NULL;
436  if (NULL != monitor_nc)
437  {
439  monitor_nc = NULL;
440  }
441  if (NULL != statistics)
442  {
444  statistics = NULL;
445  }
446 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
static char * db_lib_name
Name of the database plugin.
static struct GNUNET_NotificationContext * monitor_nc
Notification context shared by all monitors.
struct GNUNET_NAMECACHE_QueueEntry * qe
Handle to namecache queue.
#define GNUNET_NO
Definition: gnunet_common.h:78
static struct CacheOperation * cop_head
Head of cop DLL.
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
void * GNUNET_PLUGIN_unload(const char *library_name, void *arg)
Unload plugin (runs the "done" callback and returns whatever "done" returned).
Definition: plugin.c:255
void GNUNET_NAMECACHE_cancel(struct GNUNET_NAMECACHE_QueueEntry *qe)
Cancel a namecache operation.
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
static struct GNUNET_NAMESTORE_PluginFunctions * GSN_database
Database handle.
Pending operation on the namecache.
#define GNUNET_log(kind,...)
void GNUNET_NAMECACHE_disconnect(struct GNUNET_NAMECACHE_Handle *h)
Disconnect from the namecache service (and free associated resources).
void GNUNET_notification_context_destroy(struct GNUNET_NotificationContext *nc)
Destroy the context, force disconnect for all subscribers.
Definition: nc.c:135
static struct GNUNET_NAMECACHE_Handle * namecache
Namecache handle.
static struct CacheOperation * cop_tail
Tail of cop DLL.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ free_store_activity()

static void free_store_activity ( struct StoreActivity sa)
static

Release memory used by sa.

Parameters
saactivity to free

Definition at line 455 of file gnunet-service-namestore.c.

References StoreActivity::conv_name, GNUNET_CONTAINER_DLL_remove, and GNUNET_free.

Referenced by client_disconnect_cb(), and continue_store_activity().

456 {
458  GNUNET_free(sa->conv_name);
459  GNUNET_free(sa);
460 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
char * conv_name
Label nicely canonicalized (lower case).
static struct StoreActivity * sa_tail
Tail of DLL of monitor-blocked store activities.
static struct StoreActivity * sa_head
Head of DLL of monitor-blocked store activities.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ lookup_nick_it()

static void lookup_nick_it ( void *  cls,
uint64_t  seq,
const struct GNUNET_CRYPTO_EcdsaPrivateKey private_key,
const char *  label,
unsigned int  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

Function called with the records for the GNUNET_GNS_EMPTY_LABEL_AT label in the zone.

Used to locate the GNUNET_GNSRECORD_TYPE_NICK record, which (if found) is then copied to cls for future use.

Parameters
clsa struct GNUNET_GNSRECORD_Data ** for storing the nick (if found)
seqsequence number of the record, MUST NOT BE ZERO
private_keythe private key of the zone (unused)
labelshould be GNUNET_GNS_EMPTY_LABEL_AT
rd_countnumber of records in rd
rdrecords stored under label in the zone

Definition at line 476 of file gnunet-service-namestore.c.

References GNUNET_GNSRECORD_Data::data, data_size, GNUNET_GNSRECORD_Data::data_size, GNUNET_GNSRECORD_Data::expiration_time, GNUNET_GNSRECORD_Data::flags, GNUNET_assert, GNUNET_break, GNUNET_GNS_EMPTY_LABEL_AT, GNUNET_GNSRECORD_TYPE_NICK, GNUNET_malloc, GNUNET_memcpy, GNUNET_GNSRECORD_Data::record_type, and res.

Referenced by get_nick_record().

482 {
483  struct GNUNET_GNSRECORD_Data **res = cls;
484 
485  (void)private_key;
486  GNUNET_assert(0 != seq);
487  if (0 != strcmp(label, GNUNET_GNS_EMPTY_LABEL_AT))
488  {
489  GNUNET_break(0);
490  return;
491  }
492  for (unsigned int c = 0; c < rd_count; c++)
493  {
495  {
496  (*res) =
497  GNUNET_malloc(rd[c].data_size + sizeof(struct GNUNET_GNSRECORD_Data));
498  (*res)->data = &(*res)[1];
499  GNUNET_memcpy((void *)(*res)->data, rd[c].data, rd[c].data_size);
500  (*res)->data_size = rd[c].data_size;
501  (*res)->expiration_time = rd[c].expiration_time;
502  (*res)->flags = rd[c].flags;
503  (*res)->record_type = GNUNET_GNSRECORD_TYPE_NICK;
504  return;
505  }
506  }
507  (*res) = NULL;
508 }
#define GNUNET_GNS_EMPTY_LABEL_AT
String we use to indicate an empty label (top-level entry in the zone).
#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.
size_t data_size
Number of bytes in data.
#define GNUNET_GNSRECORD_TYPE_NICK
Record type for GNS nick names ("NICK").
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
const void * data
Binary value stored in the DNS record.
uint64_t expiration_time
Expiration time for the DNS record.
static int res
uint32_t record_type
Type of the GNS/DNS record.
enum GNUNET_GNSRECORD_Flags flags
Flags for the record.
static size_t data_size
Number of bytes in data.
#define GNUNET_malloc(size)
Wrapper around malloc.
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◆ cache_nick()

static void cache_nick ( const struct GNUNET_CRYPTO_EcdsaPrivateKey zone,
const struct GNUNET_GNSRECORD_Data nick 
)
static

Add entry to the cache for zone and nick.

Parameters
zonezone key to cache under
nicknick entry to cache

Definition at line 518 of file gnunet-service-namestore.c.

References GNUNET_TIME_Absolute::abs_value_us, GNUNET_GNSRECORD_Data::data, GNUNET_GNSRECORD_Data::data_size, GNUNET_free_non_null, GNUNET_malloc, GNUNET_memcmp, GNUNET_TIME_absolute_get(), NickCache::last_used, NC_SIZE, ZoneIteration::nick, nick_cache, NickCache::rd, ZoneIteration::zone, and NickCache::zone.

Referenced by get_nick_record(), and handle_record_store().

520 {
521  struct NickCache *oldest;
522 
523  oldest = NULL;
524  for (unsigned int i = 0; i < NC_SIZE; i++)
525  {
526  struct NickCache *pos = &nick_cache[i];
527 
528  if ((NULL == oldest) ||
529  (oldest->last_used.abs_value_us > pos->last_used.abs_value_us))
530  oldest = pos;
531  if (0 == GNUNET_memcmp(zone, &pos->zone))
532  {
533  oldest = pos;
534  break;
535  }
536  }
537  GNUNET_free_non_null(oldest->rd);
538  oldest->zone = *zone;
539  if (NULL != nick)
540  {
541  oldest->rd = GNUNET_malloc(sizeof(*nick) + nick->data_size);
542  *oldest->rd = *nick;
543  oldest->rd->data = &oldest->rd[1];
544  memcpy(&oldest->rd[1], nick->data, nick->data_size);
545  }
546  else
547  {
548  oldest->rd = NULL;
549  }
551 }
size_t data_size
Number of bytes in data.
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
static struct NickCache nick_cache[16]
We cache nick records to reduce DB load.
uint64_t abs_value_us
The actual value.
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Zone the cache entry is for.
Entry in list of cached nick resolutions.
#define NC_SIZE
Size of the cache used by get_nick_record()
static char * zone
Name of the zone we manage.
const void * data
Binary value stored in the DNS record.
struct GNUNET_TIME_Absolute last_used
Timestamp when this cache entry was used last.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
#define GNUNET_malloc(size)
Wrapper around malloc.
struct GNUNET_GNSRECORD_Data * rd
Cached record data.
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◆ get_nick_record()

static struct GNUNET_GNSRECORD_Data* get_nick_record ( const struct GNUNET_CRYPTO_EcdsaPrivateKey zone)
static

Return the NICK record for the zone (if it exists).

Parameters
zoneprivate key for the zone to look for nick
Returns
NULL if no NICK record was found

Definition at line 561 of file gnunet-service-namestore.c.

References cache_nick(), GNUNET_NAMESTORE_PluginFunctions::cls, GNUNET_GNSRECORD_Data::data, GNUNET_GNSRECORD_Data::data_size, GNUNET_CRYPTO_ecdsa_key_get_public(), GNUNET_ERROR_TYPE_BULK, GNUNET_ERROR_TYPE_DEBUG, GNUNET_get_log_call_status(), GNUNET_GNS_EMPTY_LABEL_AT, GNUNET_GNSRECORD_z2s(), GNUNET_log, GNUNET_LOG_CALL_STATUS, GNUNET_malloc, GNUNET_memcmp, GNUNET_OK, GNUNET_TIME_absolute_get(), NickCache::last_used, lookup_nick_it(), GNUNET_NAMESTORE_PluginFunctions::lookup_records, NC_SIZE, ZoneIteration::nick, nick_cache, NickCache::rd, res, and NickCache::zone.

Referenced by handle_record_lookup(), refresh_block(), and send_lookup_response().

562 {
564  struct GNUNET_GNSRECORD_Data *nick;
565  int res;
566 
567  /* check cache first */
568  for (unsigned int i = 0; i < NC_SIZE; i++)
569  {
570  struct NickCache *pos = &nick_cache[i];
571  if ((NULL != pos->rd) && (0 == GNUNET_memcmp(zone, &pos->zone)))
572  {
573  if (NULL == pos->rd)
574  return NULL;
575  nick = GNUNET_malloc(sizeof(*nick) + pos->rd->data_size);
576  *nick = *pos->rd;
577  nick->data = &nick[1];
578  memcpy(&nick[1], pos->rd->data, pos->rd->data_size);
580  return nick;
581  }
582  }
583 
584  nick = NULL;
586  zone,
589  &nick);
590  if ((GNUNET_OK != res) || (NULL == nick))
591  {
592 #if !defined(GNUNET_CULL_LOGGING)
593  static int do_log = GNUNET_LOG_CALL_STATUS;
594 
595  if (0 == do_log)
597  "namestore",
598  __FILE__,
599  __FUNCTION__,
600  __LINE__);
601  if (1 == do_log)
602  {
605  "No nick name set for zone `%s'\n",
607  }
608 #endif
609  /* update cache */
610  cache_nick(zone, NULL);
611  return NULL;
612  }
613 
614  /* update cache */
615  cache_nick(zone, nick);
616  return nick;
617 }
#define GNUNET_GNS_EMPTY_LABEL_AT
String we use to indicate an empty label (top-level entry in the zone).
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
size_t data_size
Number of bytes in data.
static struct NickCache nick_cache[16]
We cache nick records to reduce DB load.
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Zone the cache entry is for.
Entry in list of cached nick resolutions.
#define NC_SIZE
Size of the cache used by get_nick_record()
void * cls
Closure to pass to all plugin functions.
static void lookup_nick_it(void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *private_key, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Function called with the records for the GNUNET_GNS_EMPTY_LABEL_AT label in the zone.
const void * data
Binary value stored in the DNS record.
struct GNUNET_TIME_Absolute last_used
Timestamp when this cache entry was used last.
const char * GNUNET_GNSRECORD_z2s(const struct GNUNET_CRYPTO_EcdsaPublicKey *z)
Convert a zone key to a string (for printing debug messages).
static int res
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
int GNUNET_get_log_call_status(int caller_level, const char *comp, const char *file, const char *function, int line)
Decides whether a particular logging call should or should not be allowed to be made.
void GNUNET_CRYPTO_ecdsa_key_get_public(const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv, struct GNUNET_CRYPTO_EcdsaPublicKey *pub)
Extract the public key for the given private key.
Definition: crypto_ecc.c:241
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
#define GNUNET_LOG_CALL_STATUS
static void cache_nick(const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const struct GNUNET_GNSRECORD_Data *nick)
Add entry to the cache for zone and nick.
int(* lookup_records)(void *cls, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const char *label, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
Lookup records in the datastore for which we are the authority.
static struct GNUNET_NAMESTORE_PluginFunctions * GSN_database
Database handle.
static struct GNUNET_CRYPTO_EddsaPublicKey pub
Definition: gnunet-scrypt.c:39
Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and ECDS...
#define GNUNET_log(kind,...)
#define GNUNET_malloc(size)
Wrapper around malloc.
struct GNUNET_GNSRECORD_Data * rd
Cached record data.
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◆ merge_with_nick_records()

static void merge_with_nick_records ( const struct GNUNET_GNSRECORD_Data nick_rd,
unsigned int  rd2_length,
const struct GNUNET_GNSRECORD_Data rd2,
unsigned int *  rdc_res,
struct GNUNET_GNSRECORD_Data **  rd_res 
)
static

Merge the nick record nick_rd with the rest of the record set given in rd2.

Store the result in rdc_res and rd_res. The nick_rd's expiration time is set to the maximum expiration time of all of the records in rd2.

Parameters
nick_rdthe nick record to integrate
rd2_lengthlength of the rd2 array
rd2array of records
rdc_res[out]length of the resulting rd_res array
rd_res[out]set to an array of records, including nick_rd and rd2; all of the variable-size 'data' fields in rd2 are allocated in the same chunk of memory!

Definition at line 636 of file gnunet-service-namestore.c.

References data, GNUNET_GNSRECORD_Data::data, GNUNET_GNSRECORD_Data::data_size, GNUNET_GNSRECORD_Data::expiration_time, GNUNET_GNSRECORD_Data::flags, GNUNET_assert, GNUNET_break, GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION, GNUNET_malloc, GNUNET_memcpy, and GNUNET_TIME_absolute_get().

Referenced by lookup_it(), refresh_block(), and send_lookup_response().

641 {
642  uint64_t latest_expiration;
643  size_t req;
644  char *data;
645  size_t data_offset;
646  struct GNUNET_GNSRECORD_Data *target;
647 
648  (*rdc_res) = 1 + rd2_length;
649  if (0 == 1 + rd2_length)
650  {
651  GNUNET_break(0);
652  (*rd_res) = NULL;
653  return;
654  }
655  req = sizeof(struct GNUNET_GNSRECORD_Data) + nick_rd->data_size;
656  for (unsigned int i = 0; i < rd2_length; i++)
657  {
658  const struct GNUNET_GNSRECORD_Data *orig = &rd2[i];
659 
660  if (req + sizeof(struct GNUNET_GNSRECORD_Data) + orig->data_size < req)
661  {
662  GNUNET_break(0);
663  (*rd_res) = NULL;
664  return;
665  }
666  req += sizeof(struct GNUNET_GNSRECORD_Data) + orig->data_size;
667  }
668  target = GNUNET_malloc(req);
669  (*rd_res) = target;
670  data = (char *)&target[1 + rd2_length];
671  data_offset = 0;
672  latest_expiration = 0;
673  for (unsigned int i = 0; i < rd2_length; i++)
674  {
675  const struct GNUNET_GNSRECORD_Data *orig = &rd2[i];
676 
678  {
679  if ((GNUNET_TIME_absolute_get().abs_value_us + orig->expiration_time) >
680  latest_expiration)
681  latest_expiration = orig->expiration_time;
682  }
683  else if (orig->expiration_time > latest_expiration)
684  latest_expiration = orig->expiration_time;
685  target[i] = *orig;
686  target[i].data = (void *)&data[data_offset];
687  GNUNET_memcpy(&data[data_offset], orig->data, orig->data_size);
688  data_offset += orig->data_size;
689  }
690  /* append nick */
691  target[rd2_length] = *nick_rd;
692  target[rd2_length].expiration_time = latest_expiration;
693  target[rd2_length].data = (void *)&data[data_offset];
694  GNUNET_memcpy(&data[data_offset], nick_rd->data, nick_rd->data_size);
695  data_offset += nick_rd->data_size;
696  GNUNET_assert(req == (sizeof(struct GNUNET_GNSRECORD_Data)) * (*rdc_res) +
697  data_offset);
698 }
#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.
size_t data_size
Number of bytes in data.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
const void * data
Binary value stored in the DNS record.
uint64_t expiration_time
Expiration time for the DNS record.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
enum GNUNET_GNSRECORD_Flags flags
Flags for the record.
This flag is currently unused; former RF_PENDING flag.
uint32_t data
The data value.
static size_t data_size
Number of bytes in data.
#define GNUNET_malloc(size)
Wrapper around malloc.
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◆ send_lookup_response()

static void send_lookup_response ( struct NamestoreClient nc,
uint32_t  request_id,
const struct GNUNET_CRYPTO_EcdsaPrivateKey zone_key,
const char *  name,
unsigned int  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

Generate a struct LookupNameResponseMessage and send it to the given client using the given notification context.

Parameters
ncclient to unicast to
request_idrequest ID to use
zone_keyzone key of the zone
namename
rd_countnumber of records in rd
rdarray of records

Definition at line 713 of file gnunet-service-namestore.c.

References NamestoreClient::client, env, GNUNET_GNSRECORD_Data::flags, get_nick_record(), RecordResultMessage::gns_header, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_GNS_EMPTY_LABEL_AT, GNUNET_GNSRECORD_records_get_size(), GNUNET_GNSRECORD_records_serialize(), GNUNET_GNSRECORD_RF_PRIVATE, GNUNET_log, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_NO, GNUNET_SERVICE_client_drop(), GNUNET_STATISTICS_update(), merge_with_nick_records(), NamestoreClient::mq, RecordResultMessage::name_len, ZoneIteration::nick, RecordResultMessage::private_key, GNUNET_NAMESTORE_Header::r_id, RecordResultMessage::rd_count, RecordResultMessage::rd_len, and res.

Referenced by continue_store_activity(), monitor_iterate_cb(), and zone_iterate_proc().

719 {
720  struct GNUNET_MQ_Envelope *env;
721  struct RecordResultMessage *zir_msg;
722  struct GNUNET_GNSRECORD_Data *nick;
723  struct GNUNET_GNSRECORD_Data *res;
724  unsigned int res_count;
725  size_t name_len;
726  ssize_t rd_ser_len;
727  char *name_tmp;
728  char *rd_ser;
729 
730  nick = get_nick_record(zone_key);
732 
733  if ((NULL != nick) && (0 != strcmp(name, GNUNET_GNS_EMPTY_LABEL_AT)))
734  {
735  nick->flags =
737  merge_with_nick_records(nick, rd_count, rd, &res_count, &res);
738  GNUNET_free(nick);
739  }
740  else
741  {
742  res_count = rd_count;
743  res = (struct GNUNET_GNSRECORD_Data *)rd;
744  }
745 
746  GNUNET_assert(-1 != GNUNET_GNSRECORD_records_get_size(res_count, res));
747 
748 
749  name_len = strlen(name) + 1;
750  rd_ser_len = GNUNET_GNSRECORD_records_get_size(res_count, res);
751  if (rd_ser_len < 0)
752  {
753  GNUNET_break(0);
755  return;
756  }
757  if (((size_t)rd_ser_len) >= UINT16_MAX - name_len - sizeof(*zir_msg))
758  {
759  GNUNET_break(0);
761  return;
762  }
763  env = GNUNET_MQ_msg_extra(zir_msg,
764  name_len + rd_ser_len,
766  zir_msg->gns_header.r_id = htonl(request_id);
767  zir_msg->name_len = htons(name_len);
768  zir_msg->rd_count = htons(res_count);
769  zir_msg->rd_len = htons((uint16_t)rd_ser_len);
770  zir_msg->private_key = *zone_key;
771  name_tmp = (char *)&zir_msg[1];
772  GNUNET_memcpy(name_tmp, name, name_len);
773  rd_ser = &name_tmp[name_len];
775  rd_ser_len ==
776  GNUNET_GNSRECORD_records_serialize(res_count, res, rd_ser_len, rd_ser));
778  "Sending RECORD_RESULT message with %u records\n",
779  res_count);
781  "Record sets sent to clients",
782  1,
783  GNUNET_NO);
784  GNUNET_MQ_send(nc->mq, env);
785  if (rd != res)
786  GNUNET_free(res);
787 }
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_MQ_Handle * mq
Message queue for transmission to client.
#define GNUNET_GNS_EMPTY_LABEL_AT
String we use to indicate an empty label (top-level entry in the zone).
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:50
#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_NO
Definition: gnunet_common.h:78
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
uint16_t name_len
Name length.
Definition: namestore.h:259
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:279
#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
uint16_t rd_count
Number of records contained.
Definition: namestore.h:269
This is a private record of this peer and it should thus not be handed out to other peers...
struct GNUNET_SERVICE_Client * client
The client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
static int res
const char * name
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:264
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT.
Definition: namestore.h:254
#define GNUNET_log(kind,...)
static struct GNUNET_GNSRECORD_Data * get_nick_record(const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone)
Return the NICK record for the zone (if it exists).
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT
Service to client: here is a (plaintext) record you requested.
Record is returned from the namestore (as authority).
Definition: namestore.h:250
enum GNUNET_GNSRECORD_Flags flags
Flags for the record.
static void merge_with_nick_records(const struct GNUNET_GNSRECORD_Data *nick_rd, unsigned int rd2_length, const struct GNUNET_GNSRECORD_Data *rd2, unsigned int *rdc_res, struct GNUNET_GNSRECORD_Data **rd_res)
Merge the nick record nick_rd with the rest of the record set given in rd2.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ send_store_response()

static void send_store_response ( struct NamestoreClient nc,
int  res,
uint32_t  rid 
)
static

Send response to the store request to the client.

Parameters
clientclient to talk to
resstatus of the operation
ridclient's request ID

Definition at line 798 of file gnunet-service-namestore.c.

References env, RecordStoreResponseMessage::gns_header, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_STATISTICS_update(), NamestoreClient::mq, RecordStoreResponseMessage::op_result, and GNUNET_NAMESTORE_Header::r_id.

Referenced by finish_cache_operation(), handle_record_store(), and refresh_block().

799 {
800  struct GNUNET_MQ_Envelope *env;
801  struct RecordStoreResponseMessage *rcr_msg;
802 
803  GNUNET_assert(NULL != nc);
805  "Sending RECORD_STORE_RESPONSE message\n");
807  "Store requests completed",
808  1,
809  GNUNET_NO);
810  env = GNUNET_MQ_msg(rcr_msg,
812  rcr_msg->gns_header.r_id = htonl(rid);
813  rcr_msg->op_result = htonl(res);
814  GNUNET_MQ_send(nc->mq, env);
815 }
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE.
Definition: namestore.h:107
struct GNUNET_MQ_Handle * mq
Message queue for transmission to client.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_NO
Definition: gnunet_common.h:78
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
int32_t op_result
GNUNET_SYSERR on failure, GNUNET_OK on success
Definition: namestore.h:112
static int res
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
Response to a record storage request.
Definition: namestore.h:103
#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:351
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE
Service to client: result of store operation.
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◆ zone_iteration_done_client_continue()

static void zone_iteration_done_client_continue ( struct ZoneIteration zi)
static

Function called once we are done with the zone iteration and allow the zone iteration client to send us more messages.

Parameters
zizone iteration we are processing

Definition at line 825 of file gnunet-service-namestore.c.

References NamestoreClient::client, env, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT_END, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_SERVICE_client_continue(), NamestoreClient::mq, ZoneIteration::nc, NamestoreClient::op_head, NamestoreClient::op_tail, GNUNET_NAMESTORE_Header::r_id, ZoneIteration::request_id, and ZoneIteration::send_end.

Referenced by finish_cache_operation(), and run_zone_iteration_round().

826 {
827  struct GNUNET_MQ_Envelope *env;
828  struct GNUNET_NAMESTORE_Header *em;
829 
831  if (!zi->send_end)
832  return;
833  /* send empty response to indicate end of list */
835  em->r_id = htonl(zi->request_id);
836  GNUNET_MQ_send(zi->nc->mq, env);
837 
839  GNUNET_free(zi);
840 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
int send_end
Set to GNUNET_YES if the last iteration exhausted the limit set by the client and we should send the ...
struct GNUNET_MQ_Handle * mq
Message queue for transmission to client.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT_END
Service to client: end of list of results.
struct ZoneIteration * op_head
Head of the DLL of Zone iteration operations in progress initiated by this client.
struct GNUNET_SERVICE_Client * client
The client.
uint32_t request_id
The operation id fot the zone iteration in the response for the client.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
struct ZoneIteration * op_tail
Tail of the DLL of Zone iteration operations in progress initiated by this client.
Generic namestore message with op id.
Definition: namestore.h:40
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
struct NamestoreClient * nc
Namestore client which intiated this zone iteration.
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
#define GNUNET_free(ptr)
Wrapper around free.
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◆ finish_cache_operation()

static void finish_cache_operation ( void *  cls,
int32_t  success,
const char *  emsg 
)
static

Cache operation complete, clean up.

Parameters
clsthe struct CacheOperation
successsuccess
emsgerror messages

Definition at line 851 of file gnunet-service-namestore.c.

References _, ZoneIteration::cache_ops, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_log, CacheOperation::nc, CacheOperation::rid, send_store_response(), CacheOperation::zi, and zone_iteration_done_client_continue().

Referenced by refresh_block().

852 {
853  struct CacheOperation *cop = cls;
854  struct ZoneIteration *zi;
855 
856  if (NULL != emsg)
858  _("Failed to replicate block in namecache: %s\n"),
859  emsg);
860  else
861  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "CACHE operation completed\n");
863  if (NULL != cop->nc)
864  send_store_response(cop->nc, success, cop->rid);
865  if (NULL != (zi = cop->zi))
866  {
867  zi->cache_ops--;
868  if (0 == zi->cache_ops)
869  {
870  /* unchoke zone iteration, cache has caught up */
872  }
873  }
874  GNUNET_free(cop);
875 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
static struct CacheOperation * cop_head
Head of cop DLL.
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
uint32_t rid
Client&#39;s request ID.
unsigned int cache_ops
Number of pending cache operations triggered by this zone iteration which we need to wait for before ...
struct ZoneIteration * zi
Zone iteration to call zone_iteration_done_client_continue() for if applicable, can be NULL...
static void send_store_response(struct NamestoreClient *nc, int res, uint32_t rid)
Send response to the store request to the client.
A namestore iteration operation.
Pending operation on the namecache.
#define GNUNET_log(kind,...)
struct NamestoreClient * nc
Client to notify about the result, can be NULL.
static void zone_iteration_done_client_continue(struct ZoneIteration *zi)
Function called once we are done with the zone iteration and allow the zone iteration client to send ...
static struct CacheOperation * cop_tail
Tail of cop DLL.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ refresh_block()

static void refresh_block ( struct NamestoreClient nc,
struct ZoneIteration zi,
uint32_t  rid,
const struct GNUNET_CRYPTO_EcdsaPrivateKey zone_key,
const char *  name,
unsigned int  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

We just touched the plaintext information about a name in our zone; refresh the corresponding (encrypted) block in the namecache.

Parameters
ncclient responsible for the request, can be NULL
zizone iteration response for the request, can be NULL
ridrequest ID of the client
zone_keyprivate key of the zone
namelabel for the records
rd_countnumber of records
rdrecords stored under the given name

Definition at line 891 of file gnunet-service-namestore.c.

References cache_keys, ZoneIteration::cache_ops, disable_namecache, finish_cache_operation(), GNUNET_GNSRECORD_Data::flags, get_nick_record(), GNUNET_assert, GNUNET_CONTAINER_DLL_insert, GNUNET_CRYPTO_ecdsa_key_get_public(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_GNSRECORD_block_create(), GNUNET_GNSRECORD_block_create2(), GNUNET_GNSRECORD_record_get_expiration_time(), GNUNET_GNSRECORD_RF_PRIVATE, GNUNET_GNSRECORD_z2s(), GNUNET_log, GNUNET_NAMECACHE_block_cache(), GNUNET_new, GNUNET_NO, GNUNET_OK, GNUNET_STATISTICS_update(), GNUNET_STRINGS_absolute_time_to_string(), GNUNET_YES, merge_with_nick_records(), ZoneIteration::nc, CacheOperation::nc, ZoneIteration::nick, CacheOperation::qe, res, CacheOperation::rid, send_store_response(), and CacheOperation::zi.

Referenced by continue_store_activity(), and zone_iterate_proc().

898 {
899  struct GNUNET_GNSRECORD_Block *block;
900  struct CacheOperation *cop;
902  struct GNUNET_GNSRECORD_Data *nick;
903  struct GNUNET_GNSRECORD_Data *res;
904  unsigned int res_count;
905  struct GNUNET_TIME_Absolute exp_time;
906 
907  nick = get_nick_record(zone_key);
908  res_count = rd_count;
909  res = (struct GNUNET_GNSRECORD_Data *)rd; /* fixme: a bit unclean... */
910  if (NULL != nick)
911  {
912  nick->flags =
914  merge_with_nick_records(nick, rd_count, rd, &res_count, &res);
915  GNUNET_free(nick);
916  }
917  if (0 == res_count)
918  {
919  if (NULL != nc)
920  send_store_response(nc, GNUNET_OK, rid);
921  return; /* no data, no need to update cache */
922  }
924  {
926  "Namecache updates skipped (NC disabled)",
927  1,
928  GNUNET_NO);
929  if (NULL != nc)
930  send_store_response(nc, GNUNET_OK, rid);
931  return;
932  }
933  exp_time = GNUNET_GNSRECORD_record_get_expiration_time(res_count, res);
934  if (cache_keys)
935  block =
936  GNUNET_GNSRECORD_block_create2(zone_key, exp_time, name, res, res_count);
937  else
938  block =
939  GNUNET_GNSRECORD_block_create(zone_key, exp_time, name, res, res_count);
940  GNUNET_assert(NULL != block);
942  GNUNET_log(
944  "Caching block for label `%s' with %u records and expiration %s in zone `%s' in namecache\n",
945  name,
946  res_count,
950  "Namecache updates pushed",
951  1,
952  GNUNET_NO);
953  cop = GNUNET_new(struct CacheOperation);
954  cop->nc = nc;
955  cop->zi = zi;
956  if (NULL != zi)
957  zi->cache_ops++;
958  cop->rid = rid;
961  block,
963  cop);
964  GNUNET_free(block);
965 }
static char * pkey
Public key of the zone to look in, in ASCII.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
struct GNUNET_GNSRECORD_Block * GNUNET_GNSRECORD_block_create(const struct GNUNET_CRYPTO_EcdsaPrivateKey *key, struct GNUNET_TIME_Absolute expire, const char *label, const struct GNUNET_GNSRECORD_Data *rd, unsigned int rd_count)
Sign name and records.
struct GNUNET_NAMECACHE_QueueEntry * qe
Handle to namecache queue.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_GNSRECORD_Block * GNUNET_GNSRECORD_block_create2(const struct GNUNET_CRYPTO_EcdsaPrivateKey *key, struct GNUNET_TIME_Absolute expire, const char *label, const struct GNUNET_GNSRECORD_Data *rd, unsigned int rd_count)
Sign name and records, cache derived public key (also keeps the private key in static memory...
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define GNUNET_new(type)
Allocate a struct or union of the given type.
static struct CacheOperation * cop_head
Head of cop DLL.
Information we have in an encrypted block with record data (i.e.
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
static int disable_namecache
Use the namecache? Doing so creates additional cryptographic operations whenever we touch a record...
uint32_t rid
Client&#39;s request ID.
static void finish_cache_operation(void *cls, int32_t success, const char *emsg)
Cache operation complete, clean up.
unsigned int cache_ops
Number of pending cache operations triggered by this zone iteration which we need to wait for before ...
This is a private record of this peer and it should thus not be handed out to other peers...
struct GNUNET_NAMECACHE_QueueEntry * GNUNET_NAMECACHE_block_cache(struct GNUNET_NAMECACHE_Handle *h, const struct GNUNET_GNSRECORD_Block *block, GNUNET_NAMECACHE_ContinuationWithStatus cont, void *cont_cls)
Store an item in the namecache.
const char * GNUNET_GNSRECORD_z2s(const struct GNUNET_CRYPTO_EcdsaPublicKey *z)
Convert a zone key to a string (for printing debug messages).
static int res
struct GNUNET_TIME_Absolute GNUNET_GNSRECORD_record_get_expiration_time(unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Returns the expiration time of the given block of records.
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
void GNUNET_CRYPTO_ecdsa_key_get_public(const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv, struct GNUNET_CRYPTO_EcdsaPublicKey *pub)
Extract the public key for the given private key.
Definition: crypto_ecc.c:241
struct ZoneIteration * zi
Zone iteration to call zone_iteration_done_client_continue() for if applicable, can be NULL...
const char * name
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
static void send_store_response(struct NamestoreClient *nc, int res, uint32_t rid)
Send response to the store request to the client.
Pending operation on the namecache.
Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and ECDS...
#define GNUNET_log(kind,...)
static struct GNUNET_GNSRECORD_Data * get_nick_record(const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone)
Return the NICK record for the zone (if it exists).
struct NamestoreClient * nc
Client to notify about the result, can be NULL.
Time for absolute times used by GNUnet, in microseconds.
#define GNUNET_YES
Definition: gnunet_common.h:77
static struct GNUNET_NAMECACHE_Handle * namecache
Namecache handle.
enum GNUNET_GNSRECORD_Flags flags
Flags for the record.
const char * GNUNET_STRINGS_absolute_time_to_string(struct GNUNET_TIME_Absolute t)
Like asctime, except for GNUnet time.
Definition: strings.c:741
static int cache_keys
Optimize block insertion by caching map of private keys to public keys in memory? ...
static void merge_with_nick_records(const struct GNUNET_GNSRECORD_Data *nick_rd, unsigned int rd2_length, const struct GNUNET_GNSRECORD_Data *rd2, unsigned int *rdc_res, struct GNUNET_GNSRECORD_Data **rd_res)
Merge the nick record nick_rd with the rest of the record set given in rd2.
static struct CacheOperation * cop_tail
Tail of cop DLL.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ warn_monitor_slow()

static void warn_monitor_slow ( void *  cls)
static

Print a warning that one of our monitors is no longer reacting.

Parameters
clsa struct ZoneMonitor to warn about

Definition at line 974 of file gnunet-service-namestore.c.

References GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_SCHEDULER_add_delayed(), GNUNET_STRINGS_absolute_time_to_string(), MONITOR_STALL_WARN_DELAY, ZoneMonitor::sa_wait_warning, ZoneMonitor::sa_waiting_start, and zm.

Referenced by continue_store_activity(), handle_monitor_next(), and monitor_unblock().

975 {
976  struct ZoneMonitor *zm = cls;
977 
979  "No response from monitor since %s\n",
983  zm);
984 }
struct GNUNET_TIME_Absolute sa_waiting_start
Since when are we blocked on this monitor?
static struct GNUNET_NAMESTORE_ZoneMonitor * zm
Monitor handle.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1237
#define MONITOR_STALL_WARN_DELAY
If a monitor takes more than 1 minute to process an event, print a warning.
#define GNUNET_log(kind,...)
const char * GNUNET_STRINGS_absolute_time_to_string(struct GNUNET_TIME_Absolute t)
Like asctime, except for GNUnet time.
Definition: strings.c:741
struct GNUNET_SCHEDULER_Task * sa_wait_warning
Task to warn about slow monitors.
static void warn_monitor_slow(void *cls)
Print a warning that one of our monitors is no longer reacting.
A namestore monitor.
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◆ continue_store_activity()

static void continue_store_activity ( struct StoreActivity sa)
static

Continue processing the sa.

Parameters
sastore activity to process

Definition at line 993 of file gnunet-service-namestore.c.

References NamestoreClient::client, StoreActivity::conv_name, free_store_activity(), RecordStoreMessage::gns_header, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_GNSRECORD_records_deserialize(), GNUNET_log, GNUNET_memcmp, GNUNET_OK, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_cancel(), GNUNET_SERVICE_client_continue(), GNUNET_TIME_absolute_get(), GNUNET_YES, MONITOR_STALL_WARN_DELAY, RecordStoreMessage::name_len, StoreActivity::nc, RecordStoreMessage::private_key, GNUNET_NAMESTORE_Header::r_id, RecordStoreMessage::rd_count, RecordStoreMessage::rd_len, refresh_block(), StoreActivity::rsm, send_lookup_response(), warn_monitor_slow(), zero, zm, StoreActivity::zm_pos, and GNUNET_NAMESTORE_ZoneMonitor::zone.

Referenced by client_disconnect_cb(), handle_record_store(), and monitor_unblock().

994 {
995  const struct RecordStoreMessage *rp_msg = sa->rsm;
996  unsigned int rd_count;
997  size_t name_len;
998  size_t rd_ser_len;
999  uint32_t rid;
1000  const char *name_tmp;
1001  const char *rd_ser;
1002 
1003  rid = ntohl(rp_msg->gns_header.r_id);
1004  name_len = ntohs(rp_msg->name_len);
1005  rd_count = ntohs(rp_msg->rd_count);
1006  rd_ser_len = ntohs(rp_msg->rd_len);
1007  name_tmp = (const char *)&rp_msg[1];
1008  rd_ser = &name_tmp[name_len];
1009  {
1010  struct GNUNET_GNSRECORD_Data rd[GNUNET_NZL(rd_count)];
1011 
1012  /* We did this before, must succeed again */
1013  GNUNET_assert(
1014  GNUNET_OK ==
1015  GNUNET_GNSRECORD_records_deserialize(rd_ser_len, rd_ser, rd_count, rd));
1016 
1017  for (struct ZoneMonitor *zm = sa->zm_pos; NULL != zm; zm = sa->zm_pos)
1018  {
1019  if ((0 != GNUNET_memcmp(&rp_msg->private_key, &zm->zone)) &&
1020  (0 != GNUNET_memcmp(&zm->zone, &zero)))
1021  {
1022  sa->zm_pos = zm->next; /* not interesting to this monitor */
1023  continue;
1024  }
1025  if (zm->limit == zm->iteration_cnt)
1026  {
1027  zm->sa_waiting = GNUNET_YES;
1028  zm->sa_waiting_start = GNUNET_TIME_absolute_get();
1029  if (NULL != zm->sa_wait_warning)
1030  GNUNET_SCHEDULER_cancel(zm->sa_wait_warning);
1031  zm->sa_wait_warning =
1034  zm);
1035  return; /* blocked on zone monitor */
1036  }
1038  "Notifying monitor about changes under label `%s'\n",
1039  sa->conv_name);
1040  zm->limit--;
1042  0,
1043  &rp_msg->private_key,
1044  sa->conv_name,
1045  rd_count,
1046  rd);
1047  sa->zm_pos = zm->next;
1048  }
1049  /* great, done with the monitors, unpack (again) for refresh_block operation */
1050  refresh_block(sa->nc,
1051  NULL,
1052  rid,
1053  &rp_msg->private_key,
1054  sa->conv_name,
1055  rd_count,
1056  rd);
1057  }
1059  free_store_activity(sa);
1060 }
static const struct GNUNET_CRYPTO_EcdsaPrivateKey zero
Public key of all zeros.
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE.
Definition: namestore.h:61
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static void send_lookup_response(struct NamestoreClient *nc, uint32_t request_id, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Generate a struct LookupNameResponseMessage and send it to the given client using the given notificat...
struct ZoneMonitor * zm_pos
Next zone monitor that still needs to be notified about this PUT.
static struct GNUNET_NAMESTORE_ZoneMonitor * zm
Monitor handle.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
int GNUNET_GNSRECORD_records_deserialize(size_t len, const char *src, unsigned int rd_count, struct GNUNET_GNSRECORD_Data *dest)
Deserialize the given records to the given destination.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1237
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:76
#define MONITOR_STALL_WARN_DELAY
If a monitor takes more than 1 minute to process an event, print a warning.
struct NamestoreClient * nc
Which client triggered the store activity?
uint16_t name_len
Name length.
Definition: namestore.h:71
struct GNUNET_SERVICE_Client * client
The client.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
uint16_t rd_count
Number of records contained.
Definition: namestore.h:81
char * conv_name
Label nicely canonicalized (lower case).
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
#define GNUNET_NZL(l)
Macro used to avoid using 0 for the length of a variable-size array (Non-Zero-Length).
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:91
Store a record to the namestore (as authority).
Definition: namestore.h:57
static void free_store_activity(struct StoreActivity *sa)
Release memory used by sa.
#define GNUNET_log(kind,...)
static void refresh_block(struct NamestoreClient *nc, struct ZoneIteration *zi, uint32_t rid, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
We just touched the plaintext information about a name in our zone; refresh the corresponding (encryp...
const struct RecordStoreMessage * rsm
Copy of the original store message (as data fields in rd will point into it!).
#define GNUNET_YES
Definition: gnunet_common.h:77
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Monitored zone.
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
static void warn_monitor_slow(void *cls)
Print a warning that one of our monitors is no longer reacting.
A namestore monitor.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ client_disconnect_cb()

static void client_disconnect_cb ( void *  cls,
struct GNUNET_SERVICE_Client client,
void *  app_ctx 
)
static

Called whenever a client is disconnected.

Frees our resources associated with that client.

Parameters
clsclosure
clientidentification of the client
app_ctxthe struct NamestoreClient of client

Definition at line 1072 of file gnunet-service-namestore.c.

References continue_store_activity(), free_store_activity(), GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, GNUNET_SCHEDULER_cancel(), ZoneIteration::nc, CacheOperation::nc, CacheOperation::next, StoreActivity::next, NamestoreClient::op_head, NamestoreClient::op_tail, zm, and StoreActivity::zm_pos.

Referenced by run().

1075 {
1076  struct NamestoreClient *nc = app_ctx;
1077  struct ZoneIteration *no;
1078  struct CacheOperation *cop;
1079 
1080  (void)cls;
1081  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Client %p disconnected\n", client);
1082  for (struct ZoneMonitor *zm = monitor_head; NULL != zm; zm = zm->next)
1083  {
1084  struct StoreActivity *san;
1085 
1086  if (nc != zm->nc)
1087  continue;
1089  if (NULL != zm->task)
1090  {
1091  GNUNET_SCHEDULER_cancel(zm->task);
1092  zm->task = NULL;
1093  }
1094  if (NULL != zm->sa_wait_warning)
1095  {
1096  GNUNET_SCHEDULER_cancel(zm->sa_wait_warning);
1097  zm->sa_wait_warning = NULL;
1098  }
1099  for (struct StoreActivity *sa = sa_head; NULL != sa; sa = san)
1100  {
1101  san = sa->next;
1102  if (zm == sa->zm_pos)
1103  {
1104  sa->zm_pos = zm->next;
1105  /* this may free sa */
1107  }
1108  }
1109  GNUNET_free(zm);
1110  break;
1111  }
1112  for (struct StoreActivity *sa = sa_head; NULL != sa; sa = sa->next)
1113  {
1114  if (sa->nc == nc)
1115  {
1116  /* this may free sa */
1117  free_store_activity(sa);
1118  break; /* there can only be one per nc */
1119  }
1120  }
1121  while (NULL != (no = nc->op_head))
1122  {
1124  GNUNET_free(no);
1125  }
1126  for (cop = cop_head; NULL != cop; cop = cop->next)
1127  if (nc == cop->nc)
1128  cop->nc = NULL;
1129  GNUNET_free(nc);
1130 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct CacheOperation * next
Kept in a DLL.
static struct ZoneMonitor * monitor_head
First active zone monitor.
struct ZoneMonitor * zm_pos
Next zone monitor that still needs to be notified about this PUT.
static struct GNUNET_NAMESTORE_ZoneMonitor * zm
Monitor handle.
struct StoreActivity * next
Kept in a DLL.
static struct CacheOperation * cop_head
Head of cop DLL.
struct ZoneIteration * op_head
Head of the DLL of Zone iteration operations in progress initiated by this client.
static struct ZoneMonitor * monitor_tail
Last active zone monitor.
A namestore client.
static void continue_store_activity(struct StoreActivity *sa)
Continue processing the sa.
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
Information for an ongoing handle_record_store() operation.
static void free_store_activity(struct StoreActivity *sa)
Release memory used by sa.
struct ZoneIteration * op_tail
Tail of the DLL of Zone iteration operations in progress initiated by this client.
static struct StoreActivity * sa_head
Head of DLL of monitor-blocked store activities.
A namestore iteration operation.
Pending operation on the namecache.
#define GNUNET_log(kind,...)
struct NamestoreClient * nc
Client to notify about the result, can be NULL.
A namestore monitor.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ client_connect_cb()

static void* client_connect_cb ( void *  cls,
struct GNUNET_SERVICE_Client client,
struct GNUNET_MQ_Handle mq 
)
static

Add a client to our list of active clients.

Parameters
clsNULL
clientclient to add
mqmessage queue for client
Returns
internal namestore client structure for this client

Definition at line 1142 of file gnunet-service-namestore.c.

References NamestoreClient::client, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_new, mq, NamestoreClient::mq, and ZoneIteration::nc.

Referenced by run().

1145 {
1146  struct NamestoreClient *nc;
1147 
1148  (void)cls;
1149  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", client);
1150  nc = GNUNET_new(struct NamestoreClient);
1151  nc->client = client;
1152  nc->mq = mq;
1153  return nc;
1154 }
struct GNUNET_MQ_Handle * mq
Message queue for transmission to client.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
A namestore client.
struct GNUNET_SERVICE_Client * client
The client.
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
#define GNUNET_log(kind,...)
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◆ lookup_it()

static void lookup_it ( void *  cls,
uint64_t  seq,
const struct GNUNET_CRYPTO_EcdsaPrivateKey private_key,
const char *  label,
unsigned int  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

Function called by the namestore plugin when we are trying to lookup a record as part of handle_record_lookup().

Merges all results into the context.

Parameters
clsclosure with a struct RecordLookupContext
sequnique serial number of the record, MUST NOT BE ZERO
zone_keyprivate key of the zone
labelname that is being mapped (at most 255 characters long)
rd_countnumber of entries in rd array
rdarray of records with data to store

Definition at line 1206 of file gnunet-service-namestore.c.

References GNUNET_GNSRECORD_Data::flags, RecordLookupContext::found, GNUNET_assert, GNUNET_break, GNUNET_free, GNUNET_GNS_EMPTY_LABEL_AT, GNUNET_GNSRECORD_records_get_size(), GNUNET_GNSRECORD_records_serialize(), GNUNET_GNSRECORD_RF_PRIVATE, GNUNET_malloc, GNUNET_NO, GNUNET_YES, RecordLookupContext::label, merge_with_nick_records(), RecordLookupContext::nick, RecordLookupContext::rd_ser_len, RecordLookupContext::res_rd, and RecordLookupContext::res_rd_count.

Referenced by handle_record_lookup().

1212 {
1213  struct RecordLookupContext *rlc = cls;
1214 
1215  (void)private_key;
1216  GNUNET_assert(0 != seq);
1217  if (0 != strcmp(label, rlc->label))
1218  return;
1219  rlc->found = GNUNET_YES;
1220  if (0 == rd_count)
1221  {
1222  rlc->rd_ser_len = 0;
1223  rlc->res_rd_count = 0;
1224  rlc->res_rd = NULL;
1225  return;
1226  }
1227  if ((NULL != rlc->nick) && (0 != strcmp(label, GNUNET_GNS_EMPTY_LABEL_AT)))
1228  {
1229  /* Merge */
1230  struct GNUNET_GNSRECORD_Data *rd_res;
1231  unsigned int rdc_res;
1232 
1233  rd_res = NULL;
1234  rdc_res = 0;
1235  rlc->nick->flags = (rlc->nick->flags | GNUNET_GNSRECORD_RF_PRIVATE) ^
1237  merge_with_nick_records(rlc->nick, rd_count, rd, &rdc_res, &rd_res);
1238  rlc->rd_ser_len = GNUNET_GNSRECORD_records_get_size(rdc_res, rd_res);
1239  if (rlc->rd_ser_len < 0)
1240  {
1241  GNUNET_break(0);
1242  GNUNET_free(rd_res);
1243  rlc->found = GNUNET_NO;
1244  rlc->rd_ser_len = 0;
1245  return;
1246  }
1247  rlc->res_rd_count = rdc_res;
1248  rlc->res_rd = GNUNET_malloc(rlc->rd_ser_len);
1249  if (rlc->rd_ser_len != GNUNET_GNSRECORD_records_serialize(rdc_res,
1250  rd_res,
1251  rlc->rd_ser_len,
1252  rlc->res_rd))
1253  {
1254  GNUNET_break(0);
1255  GNUNET_free(rlc->res_rd);
1256  rlc->res_rd = NULL;
1257  rlc->res_rd_count = 0;
1258  rlc->rd_ser_len = 0;
1259  GNUNET_free(rd_res);
1260  rlc->found = GNUNET_NO;
1261  return;
1262  }
1263  GNUNET_free(rd_res);
1264  GNUNET_free(rlc->nick);
1265  rlc->nick = NULL;
1266  }
1267  else
1268  {
1269  rlc->rd_ser_len = GNUNET_GNSRECORD_records_get_size(rd_count, rd);
1270  if (rlc->rd_ser_len < 0)
1271  {
1272  GNUNET_break(0);
1273  rlc->found = GNUNET_NO;
1274  rlc->rd_ser_len = 0;
1275  return;
1276  }
1277  rlc->res_rd_count = rd_count;
1278  rlc->res_rd = GNUNET_malloc(rlc->rd_ser_len);
1279  if (rlc->rd_ser_len != GNUNET_GNSRECORD_records_serialize(rd_count,
1280  rd,
1281  rlc->rd_ser_len,
1282  rlc->res_rd))
1283  {
1284  GNUNET_break(0);
1285  GNUNET_free(rlc->res_rd);
1286  rlc->res_rd = NULL;
1287  rlc->res_rd_count = 0;
1288  rlc->rd_ser_len = 0;
1289  rlc->found = GNUNET_NO;
1290  return;
1291  }
1292  }
1293 }
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.
#define GNUNET_GNS_EMPTY_LABEL_AT
String we use to indicate an empty label (top-level entry in the zone).
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.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
Closure for lookup_it().
This is a private record of this peer and it should thus not be handed out to other peers...
unsigned int res_rd_count
FIXME.
struct GNUNET_GNSRECORD_Data * nick
FIXME.
#define GNUNET_YES
Definition: gnunet_common.h:77
enum GNUNET_GNSRECORD_Flags flags
Flags for the record.
static void merge_with_nick_records(const struct GNUNET_GNSRECORD_Data *nick_rd, unsigned int rd2_length, const struct GNUNET_GNSRECORD_Data *rd2, unsigned int *rdc_res, struct GNUNET_GNSRECORD_Data **rd_res)
Merge the nick record nick_rd with the rest of the record set given in rd2.
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ check_record_lookup()

static int check_record_lookup ( void *  cls,
const struct LabelLookupMessage ll_msg 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP message.

Parameters
clsclient sending the message
ll_msgmessage of type struct LabelLookupMessage
Returns
GNUNET_OK if ll_msg is well-formed

Definition at line 1304 of file gnunet-service-namestore.c.

References LabelLookupMessage::gns_header, GNUNET_break, GNUNET_MQ_check_zero_termination, GNUNET_OK, GNUNET_SYSERR, GNUNET_NAMESTORE_Header::header, LabelLookupMessage::label_len, and GNUNET_MessageHeader::size.

1305 {
1306  uint32_t name_len;
1307  size_t src_size;
1308 
1309  (void)cls;
1310  name_len = ntohl(ll_msg->label_len);
1311  src_size = ntohs(ll_msg->gns_header.header.size);
1312  if (name_len != src_size - sizeof(struct LabelLookupMessage))
1313  {
1314  GNUNET_break(0);
1315  return GNUNET_SYSERR;
1316  }
1318  return GNUNET_OK;
1319 }
uint32_t label_len
Length of the name.
Definition: namestore.h:128
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:45
#define GNUNET_MQ_check_zero_termination(m)
Insert code for a "check_" function that verifies that a given variable-length message received over ...
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP.
Definition: namestore.h:123
Lookup a label.
Definition: namestore.h:119

◆ handle_record_lookup()

static void handle_record_lookup ( void *  cls,
const struct LabelLookupMessage ll_msg 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP message.

Parameters
clsclient sending the message
ll_msgmessage of type struct LabelLookupMessage

Definition at line 1329 of file gnunet-service-namestore.c.

References NamestoreClient::client, GNUNET_NAMESTORE_PluginFunctions::cls, env, LabelLookupResponseMessage::found, RecordLookupContext::found, get_nick_record(), LabelLookupMessage::gns_header, LabelLookupResponseMessage::gns_header, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_free_non_null, GNUNET_GNSRECORD_string_to_lowercase(), GNUNET_log, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_NO, GNUNET_OK, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_YES, RecordLookupContext::label, LabelLookupMessage::label_len, lookup_it(), GNUNET_NAMESTORE_PluginFunctions::lookup_records, NamestoreClient::mq, LabelLookupResponseMessage::name_len, ZoneIteration::nc, RecordLookupContext::nick, LabelLookupResponseMessage::private_key, GNUNET_NAMESTORE_Header::r_id, LabelLookupResponseMessage::rd_count, LabelLookupResponseMessage::rd_len, RecordLookupContext::rd_ser_len, res, RecordLookupContext::res_rd, RecordLookupContext::res_rd_count, and LabelLookupMessage::zone.

1330 {
1331  struct NamestoreClient *nc = cls;
1332  struct GNUNET_MQ_Envelope *env;
1333  struct LabelLookupResponseMessage *llr_msg;
1334  struct RecordLookupContext rlc;
1335  const char *name_tmp;
1336  char *res_name;
1337  char *conv_name;
1338  uint32_t name_len;
1339  int res;
1340 
1341  name_len = ntohl(ll_msg->label_len);
1342  name_tmp = (const char *)&ll_msg[1];
1345  "Received NAMESTORE_RECORD_LOOKUP message for name `%s'\n",
1346  name_tmp);
1347 
1348  conv_name = GNUNET_GNSRECORD_string_to_lowercase(name_tmp);
1349  if (NULL == conv_name)
1350  {
1352  "Error converting name `%s'\n",
1353  name_tmp);
1355  return;
1356  }
1357  rlc.label = conv_name;
1358  rlc.found = GNUNET_NO;
1359  rlc.res_rd_count = 0;
1360  rlc.res_rd = NULL;
1361  rlc.rd_ser_len = 0;
1362  rlc.nick = get_nick_record(&ll_msg->zone);
1364  &ll_msg->zone,
1365  conv_name,
1366  &lookup_it,
1367  &rlc);
1368  GNUNET_free(conv_name);
1369  env =
1370  GNUNET_MQ_msg_extra(llr_msg,
1371  name_len + rlc.rd_ser_len,
1373  llr_msg->gns_header.r_id = ll_msg->gns_header.r_id;
1374  llr_msg->private_key = ll_msg->zone;
1375  llr_msg->name_len = htons(name_len);
1376  llr_msg->rd_count = htons(rlc.res_rd_count);
1377  llr_msg->rd_len = htons(rlc.rd_ser_len);
1378  res_name = (char *)&llr_msg[1];
1379  if ((GNUNET_YES == rlc.found) && (GNUNET_OK == res))
1380  llr_msg->found = ntohs(GNUNET_YES);
1381  else
1382  llr_msg->found = ntohs(GNUNET_NO);
1383  GNUNET_memcpy(&llr_msg[1], name_tmp, name_len);
1384  GNUNET_memcpy(&res_name[name_len], rlc.res_rd, rlc.rd_ser_len);
1385  GNUNET_MQ_send(nc->mq, env);
1386  GNUNET_free_non_null(rlc.res_rd);
1387 }
struct GNUNET_MQ_Handle * mq
Message queue for transmission to client.
char * GNUNET_GNSRECORD_string_to_lowercase(const char *src)
Convert a UTF-8 string to UTF-8 lowercase.
uint32_t label_len
Length of the name.
Definition: namestore.h:128
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:158
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
uint16_t rd_count
Number of records contained.
Definition: namestore.h:163
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
void * cls
Closure to pass to all plugin functions.
#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
A namestore client.
Closure for lookup_it().
uint16_t name_len
Name length.
Definition: namestore.h:153
struct GNUNET_SERVICE_Client * client
The client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
static int res
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
uint16_t found
Was the label found in the database?? GNUNET_YES or GNUNET_NO.
Definition: namestore.h:169
#define GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE
Service to client: lookup label.
int(* lookup_records)(void *cls, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const char *label, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
Lookup records in the datastore for which we are the authority.
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE.
Definition: namestore.h:148
static struct GNUNET_NAMESTORE_PluginFunctions * GSN_database
Database handle.
#define GNUNET_log(kind,...)
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:174
static struct GNUNET_GNSRECORD_Data * get_nick_record(const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone)
Return the NICK record for the zone (if it exists).
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP.
Definition: namestore.h:123
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
Lookup a label.
Definition: namestore.h:144
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
The private key of the zone to look up in.
Definition: namestore.h:133
#define GNUNET_free(ptr)
Wrapper around free.
static void lookup_it(void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *private_key, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Function called by the namestore plugin when we are trying to lookup a record as part of handle_recor...
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◆ check_record_store()

static int check_record_store ( void *  cls,
const struct RecordStoreMessage rp_msg 
)
static

Checks a GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE message.

Parameters
clsclient sending the message
rp_msgmessage of type struct RecordStoreMessage
Returns
GNUNET_OK if rp_msg is well-formed

Definition at line 1398 of file gnunet-service-namestore.c.

References RecordStoreMessage::gns_header, GNUNET_break, GNUNET_OK, GNUNET_SYSERR, GNUNET_NAMESTORE_Header::header, MAX_NAME_LEN, RecordStoreMessage::name_len, RecordStoreMessage::rd_len, RecordLookupContext::rd_ser_len, and GNUNET_MessageHeader::size.

1399 {
1400  size_t name_len;
1401  size_t msg_size;
1402  size_t msg_size_exp;
1403  size_t rd_ser_len;
1404  const char *name_tmp;
1405 
1406  (void)cls;
1407  name_len = ntohs(rp_msg->name_len);
1408  msg_size = ntohs(rp_msg->gns_header.header.size);
1409  rd_ser_len = ntohs(rp_msg->rd_len);
1410  msg_size_exp = sizeof(struct RecordStoreMessage) + name_len + rd_ser_len;
1411  if (msg_size != msg_size_exp)
1412  {
1413  GNUNET_break(0);
1414  return GNUNET_SYSERR;
1415  }
1416  if ((0 == name_len) || (name_len > MAX_NAME_LEN))
1417  {
1418  GNUNET_break(0);
1419  return GNUNET_SYSERR;
1420  }
1421  name_tmp = (const char *)&rp_msg[1];
1422  if ('\0' != name_tmp[name_len - 1])
1423  {
1424  GNUNET_break(0);
1425  return GNUNET_SYSERR;
1426  }
1427  return GNUNET_OK;
1428 }
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE.
Definition: namestore.h:61
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:45
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:76
uint16_t name_len
Name length.
Definition: namestore.h:71
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
Store a record to the namestore (as authority).
Definition: namestore.h:57
#define MAX_NAME_LEN
Maximum length of any name, including 0-termination.
Definition: namecache.h:33

◆ handle_record_store()

static void handle_record_store ( void *  cls,
const struct RecordStoreMessage rp_msg 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE message.

Parameters
clsclient sending the message
rp_msgmessage of type struct RecordStoreMessage

Definition at line 1438 of file gnunet-service-namestore.c.

References cache_nick(), NamestoreClient::client, GNUNET_NAMESTORE_PluginFunctions::cls, continue_store_activity(), StoreActivity::conv_name, RecordStoreMessage::gns_header, GNUNET_break, GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_GNS_EMPTY_LABEL_AT, GNUNET_GNSRECORD_records_deserialize(), GNUNET_GNSRECORD_string_to_lowercase(), GNUNET_GNSRECORD_TYPE_NICK, GNUNET_log, GNUNET_malloc, GNUNET_memcpy, GNUNET_NO, GNUNET_OK, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_STATISTICS_update(), GNUNET_YES, GNUNET_NAMESTORE_Header::header, GNUNET_NAMESTORE_PluginFunctions::lookup_records, monitor_head, RecordStoreMessage::name_len, ZoneIteration::nc, StoreActivity::nc, RecordStoreMessage::private_key, GNUNET_NAMESTORE_Header::r_id, RecordStoreMessage::rd_count, RecordStoreMessage::rd_len, GNUNET_GNSRECORD_Data::record_type, res, RecordStoreMessage::reserved, StoreActivity::rsm, send_store_response(), GNUNET_MessageHeader::size, GNUNET_NAMESTORE_PluginFunctions::store_records, and StoreActivity::zm_pos.

1439 {
1440  struct NamestoreClient *nc = cls;
1441  size_t name_len;
1442  size_t rd_ser_len;
1443  uint32_t rid;
1444  const char *name_tmp;
1445  char *conv_name;
1446  const char *rd_ser;
1447  unsigned int rd_count;
1448  int res;
1449  struct StoreActivity *sa;
1450 
1452  "Received NAMESTORE_RECORD_STORE message\n");
1453  rid = ntohl(rp_msg->gns_header.r_id);
1454  name_len = ntohs(rp_msg->name_len);
1455  rd_count = ntohs(rp_msg->rd_count);
1456  rd_ser_len = ntohs(rp_msg->rd_len);
1457  GNUNET_break(0 == ntohs(rp_msg->reserved));
1458  name_tmp = (const char *)&rp_msg[1];
1459  rd_ser = &name_tmp[name_len];
1460  {
1461  struct GNUNET_GNSRECORD_Data rd[GNUNET_NZL(rd_count)];
1462 
1463  if (GNUNET_OK !=
1464  GNUNET_GNSRECORD_records_deserialize(rd_ser_len, rd_ser, rd_count, rd))
1465  {
1466  GNUNET_break(0);
1468  return;
1469  }
1470 
1471  /* Extracting and converting private key */
1472  conv_name = GNUNET_GNSRECORD_string_to_lowercase(name_tmp);
1473  if (NULL == conv_name)
1474  {
1476  "Error converting name `%s'\n",
1477  name_tmp);
1479  return;
1480  }
1482  "Well-formed store requests received",
1483  1,
1484  GNUNET_NO);
1486  "Creating %u records for name `%s'\n",
1487  (unsigned int)rd_count,
1488  conv_name);
1489  if ((0 == rd_count) &&
1491  &rp_msg->private_key,
1492  conv_name,
1493  NULL,
1494  0)))
1495  {
1496  /* This name does not exist, so cannot be removed */
1498  "Name `%s' does not exist, no deletion required\n",
1499  conv_name);
1500  res = GNUNET_NO;
1501  }
1502  else
1503  {
1504  /* remove "NICK" records, unless this is for the
1505  #GNUNET_GNS_EMPTY_LABEL_AT label */
1506  struct GNUNET_GNSRECORD_Data rd_clean[GNUNET_NZL(rd_count)];
1507  unsigned int rd_clean_off;
1508  int have_nick;
1509 
1510  rd_clean_off = 0;
1511  have_nick = GNUNET_NO;
1512  for (unsigned int i = 0; i < rd_count; i++)
1513  {
1514  rd_clean[rd_clean_off] = rd[i];
1515  if ((0 == strcmp(GNUNET_GNS_EMPTY_LABEL_AT, conv_name)) ||
1517  rd_clean_off++;
1518 
1519  if ((0 == strcmp(GNUNET_GNS_EMPTY_LABEL_AT, conv_name)) &&
1520  (GNUNET_GNSRECORD_TYPE_NICK == rd[i].record_type))
1521  {
1522  cache_nick(&rp_msg->private_key, &rd[i]);
1523  have_nick = GNUNET_YES;
1524  }
1525  }
1526  if ((0 == strcmp(GNUNET_GNS_EMPTY_LABEL_AT, conv_name)) &&
1527  (GNUNET_NO == have_nick))
1528  {
1529  /* remove nick record from cache, in case we have one there */
1530  cache_nick(&rp_msg->private_key, NULL);
1531  }
1533  &rp_msg->private_key,
1534  conv_name,
1535  rd_clean_off,
1536  rd_clean);
1537  }
1538 
1539  if (GNUNET_OK != res)
1540  {
1541  /* store not successful, not need to tell monitors */
1542  send_store_response(nc, res, rid);
1544  GNUNET_free(conv_name);
1545  return;
1546  }
1547 
1548  sa = GNUNET_malloc(sizeof(struct StoreActivity) +
1549  ntohs(rp_msg->gns_header.header.size));
1551  sa->nc = nc;
1552  sa->rsm = (const struct RecordStoreMessage *)&sa[1];
1553  GNUNET_memcpy(&sa[1], rp_msg, ntohs(rp_msg->gns_header.header.size));
1554  sa->zm_pos = monitor_head;
1555  sa->conv_name = conv_name;
1557  }
1558 }
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE.
Definition: namestore.h:61
char * GNUNET_GNSRECORD_string_to_lowercase(const char *src)
Convert a UTF-8 string to UTF-8 lowercase.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
#define GNUNET_GNS_EMPTY_LABEL_AT
String we use to indicate an empty label (top-level entry in the zone).
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
static struct ZoneMonitor * monitor_head
First active zone monitor.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
struct ZoneMonitor * zm_pos
Next zone monitor that still needs to be notified about this PUT.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
int GNUNET_GNSRECORD_records_deserialize(size_t len, const char *src, unsigned int rd_count, struct GNUNET_GNSRECORD_Data *dest)
Deserialize the given records to the given destination.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
#define GNUNET_GNSRECORD_TYPE_NICK
Record type for GNS nick names ("NICK").
uint16_t reserved
always zero (for alignment)
Definition: namestore.h:86
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
void * cls
Closure to pass to all plugin functions.
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:45
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:76
A namestore client.
static void continue_store_activity(struct StoreActivity *sa)
Continue processing the sa.
struct NamestoreClient * nc
Which client triggered the store activity?
uint16_t name_len
Name length.
Definition: namestore.h:71
struct GNUNET_SERVICE_Client * client
The client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
static int res
uint16_t rd_count
Number of records contained.
Definition: namestore.h:81
char * conv_name
Label nicely canonicalized (lower case).
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
static struct StoreActivity * sa_tail
Tail of DLL of monitor-blocked store activities.
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
Information for an ongoing handle_record_store() operation.
#define GNUNET_NZL(l)
Macro used to avoid using 0 for the length of a variable-size array (Non-Zero-Length).
struct GNUNET_CRYPTO_EcdsaPrivateKey private_key
The private key of the authority.
Definition: namestore.h:91
Store a record to the namestore (as authority).
Definition: namestore.h:57
static void cache_nick(const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const struct GNUNET_GNSRECORD_Data *nick)
Add entry to the cache for zone and nick.
int(* lookup_records)(void *cls, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const char *label, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
Lookup records in the datastore for which we are the authority.
static void send_store_response(struct NamestoreClient *nc, int res, uint32_t rid)
Send response to the store request to the client.
uint32_t record_type
Type of the GNS/DNS record.
static struct StoreActivity * sa_head
Head of DLL of monitor-blocked store activities.
static struct GNUNET_NAMESTORE_PluginFunctions * GSN_database
Database handle.
#define GNUNET_log(kind,...)
const struct RecordStoreMessage * rsm
Copy of the original store message (as data fields in rd will point into it!).
#define GNUNET_YES
Definition: gnunet_common.h:77
int(* store_records)(void *cls, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Store a record in the datastore for which we are the authority.
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:

◆ handle_zone_to_name_it()

static void handle_zone_to_name_it ( void *  cls,
uint64_t  seq,
const struct GNUNET_CRYPTO_EcdsaPrivateKey zone_key,
const char *  name,
unsigned int  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

Zone to name iterator.

Parameters
clsstruct ZoneToNameCtx *
seqsequence number of the record, MUST NOT BE ZERO
zone_keythe zone key
namename
rd_countnumber of records in rd
rdrecord data

Definition at line 1596 of file gnunet-service-namestore.c.

References env, ZoneToNameResponseMessage::gns_header, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_GNSRECORD_records_get_size(), GNUNET_GNSRECORD_records_serialize(), GNUNET_log, GNUNET_MAX_MESSAGE_SIZE, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_OK, GNUNET_SYSERR, GNUNET_YES, GNUNET_NAMESTORE_Header::header, NamestoreClient::mq, name, ZoneToNameResponseMessage::name_len, ZoneToNameCtx::nc, GNUNET_NAMESTORE_Header::r_id, ZoneToNameResponseMessage::rd_count, ZoneToNameResponseMessage::rd_len, res, ZoneToNameResponseMessage::res, ZoneToNameCtx::rid, GNUNET_MessageHeader::size, ZoneToNameCtx::success, and ZoneToNameResponseMessage::zone.

Referenced by handle_zone_to_name().

1602 {
1603  struct ZoneToNameCtx *ztn_ctx = cls;
1604  struct GNUNET_MQ_Envelope *env;
1605  struct ZoneToNameResponseMessage *ztnr_msg;
1606  int16_t res;
1607  size_t name_len;
1608  ssize_t rd_ser_len;
1609  size_t msg_size;
1610  char *name_tmp;
1611  char *rd_tmp;
1612 
1613  GNUNET_assert(0 != seq);
1615  "Found result for zone-to-name lookup: `%s'\n",
1616  name);
1617  res = GNUNET_YES;
1618  name_len = (NULL == name) ? 0 : strlen(name) + 1;
1619  rd_ser_len = GNUNET_GNSRECORD_records_get_size(rd_count, rd);
1620  if (rd_ser_len < 0)
1621  {
1622  GNUNET_break(0);
1623  ztn_ctx->success = GNUNET_SYSERR;
1624  return;
1625  }
1626  msg_size = sizeof(struct ZoneToNameResponseMessage) + name_len + rd_ser_len;
1627  if (msg_size >= GNUNET_MAX_MESSAGE_SIZE)
1628  {
1629  GNUNET_break(0);
1630  ztn_ctx->success = GNUNET_SYSERR;
1631  return;
1632  }
1633  env =
1634  GNUNET_MQ_msg_extra(ztnr_msg,
1635  name_len + rd_ser_len,
1637  ztnr_msg->gns_header.header.size = htons(msg_size);
1638  ztnr_msg->gns_header.r_id = htonl(ztn_ctx->rid);
1639  ztnr_msg->res = htons(res);
1640  ztnr_msg->rd_len = htons(rd_ser_len);
1641  ztnr_msg->rd_count = htons(rd_count);
1642  ztnr_msg->name_len = htons(name_len);
1643  ztnr_msg->zone = *zone_key;
1644  name_tmp = (char *)&ztnr_msg[1];
1645  GNUNET_memcpy(name_tmp, name, name_len);
1646  rd_tmp = &name_tmp[name_len];
1647  GNUNET_assert(
1648  rd_ser_len ==
1649  GNUNET_GNSRECORD_records_serialize(rd_count, rd, rd_ser_len, rd_tmp));
1650  ztn_ctx->success = GNUNET_OK;
1651  GNUNET_MQ_send(ztn_ctx->nc->mq, env);
1652 }
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_MQ_Handle * mq
Message queue for transmission to client.
struct NamestoreClient * nc
Namestore client.
#define GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE
Service to client: result of zone-to-name lookup.
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:50
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
uint16_t name_len
Length of the name.
Definition: namestore.h:217
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
int16_t res
result in NBO: GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error ...
Definition: namestore.h:233
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
int success
Set to GNUNET_OK on success, GNUNET_SYSERR on error.
uint16_t rd_count
Number of records contained.
Definition: namestore.h:227
struct GNUNET_MessageHeader header
header.type will be GNUNET_MESSAGE_TYPE_NAMESTORE_* header.size will be message size ...
Definition: namestore.h:45
#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
static int res
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
The private key of the zone that contained the name.
Definition: namestore.h:238
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
const char * name
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
Definition: namestore.h:212
Context for record remove operations passed from handle_zone_to_name to handle_zone_to_name_it as clo...
Respone for zone to name lookup.
Definition: namestore.h:208
#define GNUNET_log(kind,...)
uint16_t rd_len
Length of serialized record data.
Definition: namestore.h:222
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
uint32_t rid
Request id (to be used in the response to the client).
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◆ handle_zone_to_name()

static void handle_zone_to_name ( void *  cls,
const struct ZoneToNameMessage ztn_msg 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME message.

Parameters
clsclient client sending the message
ztn_msgmessage of type 'struct ZoneToNameMessage'

Definition at line 1662 of file gnunet-service-namestore.c.

References NamestoreClient::client, GNUNET_NAMESTORE_PluginFunctions::cls, env, ZoneToNameResponseMessage::gns_header, ZoneToNameMessage::gns_header, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_SYSERR, handle_zone_to_name_it(), NamestoreClient::mq, ZoneIteration::nc, ZoneToNameCtx::nc, GNUNET_NAMESTORE_Header::r_id, ZoneToNameResponseMessage::res, ZoneToNameCtx::rid, ZoneToNameCtx::success, ZoneToNameMessage::value_zone, ZoneToNameMessage::zone, and GNUNET_NAMESTORE_PluginFunctions::zone_to_name.

1663 {
1664  struct NamestoreClient *nc = cls;
1665  struct ZoneToNameCtx ztn_ctx;
1666  struct GNUNET_MQ_Envelope *env;
1667  struct ZoneToNameResponseMessage *ztnr_msg;
1668 
1669  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received ZONE_TO_NAME message\n");
1670  ztn_ctx.rid = ntohl(ztn_msg->gns_header.r_id);
1671  ztn_ctx.nc = nc;
1672  ztn_ctx.success = GNUNET_NO;
1674  &ztn_msg->zone,
1675  &ztn_msg->value_zone,
1677  &ztn_ctx))
1678  {
1679  /* internal error, hang up instead of signalling something
1680  that might be wrong */
1681  GNUNET_break(0);
1683  return;
1684  }
1685  if (GNUNET_NO == ztn_ctx.success)
1686  {
1687  /* no result found, send empty response */
1689  "Found no result for zone-to-name lookup.\n");
1690  env = GNUNET_MQ_msg(ztnr_msg,
1692  ztnr_msg->gns_header.r_id = ztn_msg->gns_header.r_id;
1693  ztnr_msg->res = htons(GNUNET_NO);
1694  GNUNET_MQ_send(nc->mq, env);
1695  }
1697 }
struct GNUNET_MQ_Handle * mq
Message queue for transmission to client.
#define GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE
Service to client: result of zone-to-name lookup.
int(* zone_to_name)(void *cls, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, const struct GNUNET_CRYPTO_EcdsaPublicKey *value_zone, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
Look for an existing PKEY delegation record for a given public key.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME.
Definition: namestore.h:191
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
int16_t res
result in NBO: GNUNET_OK on success, GNUNET_NO if there were no results, GNUNET_SYSERR on error ...
Definition: namestore.h:233
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
void * cls
Closure to pass to all plugin functions.
struct GNUNET_CRYPTO_EcdsaPublicKey value_zone
The public key of the target zone.
Definition: namestore.h:201
A namestore client.
struct GNUNET_SERVICE_Client * client
The client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static void handle_zone_to_name_it(void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Zone to name iterator.
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
Definition: namestore.h:212
Context for record remove operations passed from handle_zone_to_name to handle_zone_to_name_it as clo...
Respone for zone to name lookup.
Definition: namestore.h:208
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
The private key of the zone to look up in.
Definition: namestore.h:196
static struct GNUNET_NAMESTORE_PluginFunctions * GSN_database
Database handle.
#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:351
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
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◆ zone_iterate_proc()

static void zone_iterate_proc ( void *  cls,
uint64_t  seq,
const struct GNUNET_CRYPTO_EcdsaPrivateKey zone_key,
const char *  name,
unsigned int  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

Process results for zone iteration from database.

Parameters
clsstruct ZoneIterationProcResult
seqsequence number of the record, MUST NOT BE ZERO
zone_keythe zone key
namename
rd_countnumber of records for this name
rdrecord data

Definition at line 1728 of file gnunet-service-namestore.c.

References GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION, GNUNET_log, GNUNET_NO, GNUNET_YES, ZoneIterationProcResult::limit, ZoneIteration::nc, refresh_block(), ZoneIteration::request_id, send_lookup_response(), ZoneIteration::seq, and ZoneIterationProcResult::zi.

Referenced by run_zone_iteration_round().

1734 {
1735  struct ZoneIterationProcResult *proc = cls;
1736  int do_refresh_block;
1737 
1738  GNUNET_assert(0 != seq);
1739  if ((NULL == zone_key) && (NULL == name))
1740  {
1741  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Iteration done\n");
1742  return;
1743  }
1744  if ((NULL == zone_key) || (NULL == name))
1745  {
1746  /* what is this!? should never happen */
1747  GNUNET_break(0);
1748  return;
1749  }
1750  if (0 == proc->limit)
1751  {
1752  /* what is this!? should never happen */
1753  GNUNET_break(0);
1754  return;
1755  }
1756  proc->limit--;
1757  proc->zi->seq = seq;
1758  send_lookup_response(proc->zi->nc,
1759  proc->zi->request_id,
1760  zone_key,
1761  name,
1762  rd_count,
1763  rd);
1764 
1765 
1766  do_refresh_block = GNUNET_NO;
1767  for (unsigned int i = 0; i < rd_count; i++)
1768  if (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION))
1769  {
1770  do_refresh_block = GNUNET_YES;
1771  break;
1772  }
1773  if (GNUNET_YES == do_refresh_block)
1774  refresh_block(NULL, proc->zi, 0, zone_key, name, rd_count, rd);
1775 }
uint64_t limit
Number of results left to be returned in this iteration.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static void send_lookup_response(struct NamestoreClient *nc, uint32_t request_id, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Generate a struct LookupNameResponseMessage and send it to the given client using the given notificat...
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
uint64_t seq
Last sequence number in the zone iteration used to address next result of the zone iteration in the s...
struct ZoneIteration * zi
The zone iteration handle.
uint32_t request_id
The operation id fot the zone iteration in the response for the client.
const char * name
#define GNUNET_log(kind,...)
static void refresh_block(struct NamestoreClient *nc, struct ZoneIteration *zi, uint32_t rid, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
We just touched the plaintext information about a name in our zone; refresh the corresponding (encryp...
#define GNUNET_YES
Definition: gnunet_common.h:77
This flag is currently unused; former RF_PENDING flag.
struct NamestoreClient * nc
Namestore client which intiated this zone iteration.
Context for record remove operations passed from run_zone_iteration_round to zone_iterate_proc as clo...
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◆ run_zone_iteration_round()

static void run_zone_iteration_round ( struct ZoneIteration zi,
uint64_t  limit 
)
static

Perform the next round of the zone iteration.

Parameters
zizone iterator to process
limitnumber of results to return in one pass

Definition at line 1785 of file gnunet-service-namestore.c.

References ZoneIteration::cache_ops, GNUNET_NAMESTORE_PluginFunctions::cls, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_is_zero, GNUNET_log, GNUNET_NO, GNUNET_STATISTICS_set(), GNUNET_SYSERR, GNUNET_TIME_absolute_get(), GNUNET_TIME_absolute_get_duration(), GNUNET_TIME_relative_divide(), GNUNET_NAMESTORE_PluginFunctions::iterate_records, ZoneIterationProcResult::limit, ZoneIteration::send_end, ZoneIteration::seq, ZoneIterationProcResult::zi, ZoneIteration::zone, zone_iterate_proc(), and zone_iteration_done_client_continue().

Referenced by handle_iteration_next(), and handle_iteration_start().

1786 {
1787  struct ZoneIterationProcResult proc;
1788  struct GNUNET_TIME_Absolute start;
1790 
1791  memset(&proc, 0, sizeof(proc));
1793  "Asked to return up to %llu records at position %llu\n",
1794  (unsigned long long)limit,
1795  (unsigned long long)zi->seq);
1796  proc.zi = zi;
1797  proc.limit = limit;
1801  (0 == GNUNET_is_zero(&zi->zone))
1802  ? NULL
1803  : &zi->zone,
1804  zi->seq,
1805  limit,
1807  &proc));
1809  duration = GNUNET_TIME_relative_divide(duration, limit - proc.limit);
1811  "NAMESTORE iteration delay (μs/record)",
1812  duration.rel_value_us,
1813  GNUNET_NO);
1814  if (0 == proc.limit)
1816  "Returned %llu results, more results available\n",
1817  (unsigned long long)limit);
1818  zi->send_end = (0 != proc.limit);
1819  if (0 == zi->cache_ops)
1821 }
int send_end
Set to GNUNET_YES if the last iteration exhausted the limit set by the client and we should send the ...
static void zone_iterate_proc(void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Process results for zone iteration from database.
static int start
Set if we are to start default services (including ARM).
Definition: gnunet-arm.c:39
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
void * cls
Closure to pass to all plugin functions.
uint64_t seq
Last sequence number in the zone iteration used to address next result of the zone iteration in the s...
unsigned int cache_ops
Number of pending cache operations triggered by this zone iteration which we need to wait for before ...
void GNUNET_STATISTICS_set(struct GNUNET_STATISTICS_Handle *handle, const char *name, uint64_t value, int make_persistent)
Set statistic value for the peer.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
#define GNUNET_is_zero(a)
Check that memory in a is all zeros.
static struct GNUNET_NAMESTORE_PluginFunctions * GSN_database
Database handle.
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_duration(struct GNUNET_TIME_Absolute whence)
Get the duration of an operation as the difference of the current time and the given start time "henc...
Definition: time.c:373
#define GNUNET_log(kind,...)
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Key of the zone we are iterating over.
static struct GNUNET_TIME_Relative duration
How long do we run the test?
struct GNUNET_TIME_Relative GNUNET_TIME_relative_divide(struct GNUNET_TIME_Relative rel, unsigned long long factor)
Divide relative time by a given factor.
Definition: time.c:525
Time for absolute times used by GNUnet, in microseconds.
static void zone_iteration_done_client_continue(struct ZoneIteration *zi)
Function called once we are done with the zone iteration and allow the zone iteration client to send ...
int(* iterate_records)(void *cls, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, uint64_t serial, uint64_t limit, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
Iterate over the results for a particular zone in the datastore.
Time for relative time used by GNUnet, in microseconds.
Context for record remove operations passed from run_zone_iteration_round to zone_iterate_proc as clo...
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◆ handle_iteration_start()

static void handle_iteration_start ( void *  cls,
const struct ZoneIterationStartMessage zis_msg 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START message.

Parameters
clsthe client sending the message
zis_msgmessage from the client

Definition at line 1831 of file gnunet-service-namestore.c.

References ZoneIterationStartMessage::gns_header, GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_new, ZoneIteration::nc, ZoneIteration::offset, NamestoreClient::op_head, NamestoreClient::op_tail, GNUNET_NAMESTORE_Header::r_id, ZoneIteration::request_id, run_zone_iteration_round(), ZoneIteration::zone, and ZoneIterationStartMessage::zone.

1833 {
1834  struct NamestoreClient *nc = cls;
1835  struct ZoneIteration *zi;
1836 
1838  "Received ZONE_ITERATION_START message\n");
1839  zi = GNUNET_new(struct ZoneIteration);
1840  zi->request_id = ntohl(zis_msg->gns_header.r_id);
1841  zi->offset = 0;
1842  zi->nc = nc;
1843  zi->zone = zis_msg->zone;
1844 
1846  run_zone_iteration_round(zi, 1);
1847 }
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
#define GNUNET_new(type)
Allocate a struct or union of the given type.
static void run_zone_iteration_round(struct ZoneIteration *zi, uint64_t limit)
Perform the next round of the zone iteration.
struct ZoneIteration * op_head
Head of the DLL of Zone iteration operations in progress initiated by this client.
A namestore client.
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START.
Definition: namestore.h:341
uint32_t offset
Offset of the zone iteration used to address next result of the zone iteration in the store...
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
uint32_t request_id
The operation id fot the zone iteration in the response for the client.
struct ZoneIteration * op_tail
Tail of the DLL of Zone iteration operations in progress initiated by this client.
A namestore iteration operation.
#define GNUNET_log(kind,...)
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Key of the zone we are iterating over.
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Zone key.
Definition: namestore.h:346
struct NamestoreClient * nc
Namestore client which intiated this zone iteration.
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◆ handle_iteration_stop()

static void handle_iteration_stop ( void *  cls,
const struct ZoneIterationStopMessage zis_msg 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP message.

Parameters
clsthe client sending the message
zis_msgmessage from the client

Definition at line 1857 of file gnunet-service-namestore.c.

References NamestoreClient::client, ZoneIterationStopMessage::gns_header, GNUNET_break, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), ZoneIteration::nc, ZoneIteration::next, NamestoreClient::op_head, NamestoreClient::op_tail, GNUNET_NAMESTORE_Header::r_id, and ZoneIteration::request_id.

1859 {
1860  struct NamestoreClient *nc = cls;
1861  struct ZoneIteration *zi;
1862  uint32_t rid;
1863 
1865  "Received ZONE_ITERATION_STOP message\n");
1866  rid = ntohl(zis_msg->gns_header.r_id);
1867  for (zi = nc->op_head; NULL != zi; zi = zi->next)
1868  if (zi->request_id == rid)
1869  break;
1870  if (NULL == zi)
1871  {
1872  GNUNET_break(0);
1874  return;
1875  }
1877  GNUNET_free(zi);
1879 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct ZoneIteration * op_head
Head of the DLL of Zone iteration operations in progress initiated by this client.
A namestore client.
struct ZoneIteration * next
Next element in the DLL.
struct GNUNET_SERVICE_Client * client
The client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
uint32_t request_id
The operation id fot the zone iteration in the response for the client.
struct ZoneIteration * op_tail
Tail of the DLL of Zone iteration operations in progress initiated by this client.
A namestore iteration operation.
#define GNUNET_log(kind,...)
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP.
Definition: namestore.h:375
#define GNUNET_free(ptr)
Wrapper around free.
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◆ handle_iteration_next()

static void handle_iteration_next ( void *  cls,
const struct ZoneIterationNextMessage zis_msg 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT message.

Parameters
clsthe client sending the message
messagemessage from the client

Definition at line 1889 of file gnunet-service-namestore.c.

References NamestoreClient::client, ZoneIterationNextMessage::gns_header, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_NO, GNUNET_ntohll(), GNUNET_SERVICE_client_drop(), GNUNET_STATISTICS_update(), ZoneIterationNextMessage::limit, ZoneIteration::nc, ZoneIteration::next, NamestoreClient::op_head, GNUNET_NAMESTORE_Header::r_id, ZoneIteration::request_id, and run_zone_iteration_round().

1891 {
1892  struct NamestoreClient *nc = cls;
1893  struct ZoneIteration *zi;
1894  uint32_t rid;
1895  uint64_t limit;
1896 
1898  "Received ZONE_ITERATION_NEXT message\n");
1900  "Iteration NEXT messages received",
1901  1,
1902  GNUNET_NO);
1903  rid = ntohl(zis_msg->gns_header.r_id);
1904  limit = GNUNET_ntohll(zis_msg->limit);
1905  for (zi = nc->op_head; NULL != zi; zi = zi->next)
1906  if (zi->request_id == rid)
1907  break;
1908  if (NULL == zi)
1909  {
1910  GNUNET_break(0);
1912  return;
1913  }
1914  run_zone_iteration_round(zi, limit);
1915 }
uint32_t r_id
Request ID in NBO.
Definition: namestore.h:50
#define GNUNET_NO
Definition: gnunet_common.h:78
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static void run_zone_iteration_round(struct ZoneIteration *zi, uint64_t limit)
Perform the next round of the zone iteration.
struct ZoneIteration * op_head
Head of the DLL of Zone iteration operations in progress initiated by this client.
A namestore client.
struct ZoneIteration * next
Next element in the DLL.
struct GNUNET_SERVICE_Client * client
The client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
uint32_t request_id
The operation id fot the zone iteration in the response for the client.
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
A namestore iteration operation.
#define GNUNET_log(kind,...)
uint64_t limit
Number of records to return to the iterator in one shot (before GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_IT...
Definition: namestore.h:364
struct GNUNET_NAMESTORE_Header gns_header
Type will be GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT.
Definition: namestore.h:357
uint64_t GNUNET_ntohll(uint64_t n)
Convert unsigned 64-bit integer to host byte order.
Definition: common_endian.c:48
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◆ monitor_unblock()

static void monitor_unblock ( struct ZoneMonitor zm)
static

Function called when the monitor is ready for more data, and we should thus unblock PUT operations that were blocked on the monitor not being ready.

Definition at line 1924 of file gnunet-service-namestore.c.

References continue_store_activity(), GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_cancel(), GNUNET_TIME_absolute_get(), GNUNET_YES, ZoneMonitor::iteration_cnt, ZoneMonitor::limit, MONITOR_STALL_WARN_DELAY, StoreActivity::next, sa_head, ZoneMonitor::sa_wait_warning, ZoneMonitor::sa_waiting, ZoneMonitor::sa_waiting_start, warn_monitor_slow(), and StoreActivity::zm_pos.

Referenced by handle_monitor_next(), and monitor_sync().

1925 {
1926  struct StoreActivity *sa = sa_head;
1927 
1928  while ((NULL != sa) && (zm->limit > zm->iteration_cnt))
1929  {
1930  struct StoreActivity *sn = sa->next;
1931 
1932  if (sa->zm_pos == zm)
1934  sa = sn;
1935  }
1936  if (zm->limit > zm->iteration_cnt)
1937  {
1938  zm->sa_waiting = GNUNET_NO;
1939  if (NULL != zm->sa_wait_warning)
1940  {
1942  zm->sa_wait_warning = NULL;
1943  }
1944  }
1945  else if (GNUNET_YES == zm->sa_waiting)
1946  {
1948  if (NULL != zm->sa_wait_warning)
1950  zm->sa_wait_warning =
1953  zm);
1954  }
1955 }
uint64_t iteration_cnt
How many more requests may we receive from the iterator before it is at the limit we gave it...
struct ZoneMonitor * zm_pos
Next zone monitor that still needs to be notified about this PUT.
struct GNUNET_TIME_Absolute sa_waiting_start
Since when are we blocked on this monitor?
#define GNUNET_NO
Definition: gnunet_common.h:78
struct StoreActivity * next
Kept in a DLL.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1237
#define MONITOR_STALL_WARN_DELAY
If a monitor takes more than 1 minute to process an event, print a warning.
static void continue_store_activity(struct StoreActivity *sa)
Continue processing the sa.
uint64_t limit
Current limit of how many more messages we are allowed to queue to this monitor.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
Information for an ongoing handle_record_store() operation.
static struct StoreActivity * sa_head
Head of DLL of monitor-blocked store activities.
#define GNUNET_YES
Definition: gnunet_common.h:77
struct GNUNET_SCHEDULER_Task * sa_wait_warning
Task to warn about slow monitors.
int sa_waiting
Is there a store activity waiting for this monitor? We only raise the flag when it happens and search...
static void warn_monitor_slow(void *cls)
Print a warning that one of our monitors is no longer reacting.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ monitor_sync()

static void monitor_sync ( struct ZoneMonitor zm)
static

Send 'sync' message to zone monitor, we're now in sync.

Parameters
zmmonitor that is now in sync

Definition at line 1964 of file gnunet-service-namestore.c.

References env, GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_SYNC, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, ZoneMonitor::in_first_iteration, ZoneMonitor::iteration_cnt, ZoneMonitor::limit, monitor_iteration_next(), monitor_unblock(), NamestoreClient::mq, ZoneMonitor::nc, and ZoneMonitor::sa_waiting.

Referenced by handle_monitor_start(), and monitor_iteration_next().

1965 {
1966  struct GNUNET_MQ_Envelope *env;
1967  struct GNUNET_MessageHeader *sync;
1968 
1970  GNUNET_MQ_send(zm->nc->mq, env);
1971  /* mark iteration done */
1973  zm->iteration_cnt = 0;
1974  if ((zm->limit > 0) && (zm->sa_waiting))
1975  monitor_unblock(zm);
1976 }
struct GNUNET_MQ_Handle * mq
Message queue for transmission to client.
struct NamestoreClient * nc
Namestore client which intiated this zone monitor.
uint64_t iteration_cnt
How many more requests may we receive from the iterator before it is at the limit we gave it...
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_NO
Definition: gnunet_common.h:78
uint64_t limit
Current limit of how many more messages we are allowed to queue to this monitor.
int in_first_iteration
Are we (still) in the initial iteration pass?
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_SYNC
Service to client: you&#39;re now in sync.
Header for all communications.
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
int sa_waiting
Is there a store activity waiting for this monitor? We only raise the flag when it happens and search...
static void monitor_unblock(struct ZoneMonitor *zm)
Function called when the monitor is ready for more data, and we should thus unblock PUT operations th...
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◆ monitor_iteration_next()

static void monitor_iteration_next ( void *  cls)
static

Obtain the next datum during the zone monitor's zone initial iteration.

Parameters
clszone monitor that does its initial iteration

Definition at line 2063 of file gnunet-service-namestore.c.

References NamestoreClient::client, GNUNET_NAMESTORE_PluginFunctions::cls, GNUNET_assert, GNUNET_is_zero, GNUNET_NO, GNUNET_SERVICE_client_drop(), GNUNET_SYSERR, GNUNET_NAMESTORE_PluginFunctions::iterate_records, ZoneMonitor::iteration_cnt, ZoneMonitor::limit, monitor_iterate_cb(), monitor_sync(), ZoneMonitor::nc, ret, ZoneMonitor::seq, ZoneMonitor::task, zm, and ZoneMonitor::zone.

Referenced by handle_monitor_next(), handle_monitor_start(), monitor_iterate_cb(), and monitor_sync().

2064 {
2065  struct ZoneMonitor *zm = cls;
2066  int ret;
2067 
2068  zm->task = NULL;
2069  GNUNET_assert(0 == zm->iteration_cnt);
2070  if (zm->limit > 16)
2071  zm->iteration_cnt = zm->limit / 2; /* leave half for monitor events */
2072  else
2073  zm->iteration_cnt = zm->limit; /* use it all */
2075  (0 == GNUNET_is_zero(&zm->zone))
2076  ? NULL
2077  : &zm->zone,
2078  zm->seq,
2079  zm->iteration_cnt,
2081  zm);
2082  if (GNUNET_SYSERR == ret)
2083  {
2085  return;
2086  }
2087  if (GNUNET_NO == ret)
2088  {
2089  /* empty zone */
2090  monitor_sync(zm);
2091  return;
2092  }
2093 }
static void monitor_iterate_cb(void *cls, uint64_t seq, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
A GNUNET_NAMESTORE_RecordIterator for monitors.
struct NamestoreClient * nc
Namestore client which intiated this zone monitor.
uint64_t iteration_cnt
How many more requests may we receive from the iterator before it is at the limit we gave it...
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
uint64_t seq
Last sequence number in the zone iteration used to address next result of the zone iteration in the s...
static struct GNUNET_NAMESTORE_ZoneMonitor * zm
Monitor handle.
#define GNUNET_NO
Definition: gnunet_common.h:78
static int ret
Final status code.
Definition: gnunet-arm.c:89
void * cls
Closure to pass to all plugin functions.
static void monitor_sync(struct ZoneMonitor *zm)
Send &#39;sync&#39; message to zone monitor, we&#39;re now in sync.
uint64_t limit
Current limit of how many more messages we are allowed to queue to this monitor.
struct GNUNET_SERVICE_Client * client
The client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
struct GNUNET_SCHEDULER_Task * task
Task active during initial iteration.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
#define GNUNET_is_zero(a)
Check that memory in a is all zeros.
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Private key of the zone.
static struct GNUNET_NAMESTORE_PluginFunctions * GSN_database
Database handle.
int(* iterate_records)(void *cls, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone, uint64_t serial, uint64_t limit, GNUNET_NAMESTORE_RecordIterator iter, void *iter_cls)
Iterate over the results for a particular zone in the datastore.
A namestore monitor.
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◆ monitor_iterate_cb()

static void monitor_iterate_cb ( void *  cls,
uint64_t  seq,
const struct GNUNET_CRYPTO_EcdsaPrivateKey zone_key,
const char *  name,
unsigned int  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

A GNUNET_NAMESTORE_RecordIterator for monitors.

Parameters
clsa 'struct ZoneMonitor *' with information about the monitor
seqsequence number of the record, MUST NOT BE ZERO
zone_keyzone key of the zone
namename
rd_countnumber of records in rd
rdarray of records

Definition at line 1999 of file gnunet-service-namestore.c.

References GNUNET_assert, GNUNET_NO, GNUNET_SCHEDULER_add_now(), GNUNET_STATISTICS_update(), ZoneMonitor::iteration_cnt, ZoneMonitor::limit, monitor_iteration_next(), ZoneMonitor::nc, send_lookup_response(), ZoneIteration::seq, ZoneMonitor::seq, ZoneMonitor::task, and zm.

Referenced by monitor_iteration_next().

2005 {
2006  struct ZoneMonitor *zm = cls;
2007 
2008  GNUNET_assert(0 != seq);
2009  zm->seq = seq;
2010  GNUNET_assert(NULL != name);
2012  "Monitor notifications sent",
2013  1,
2014  GNUNET_NO);
2015  zm->limit--;
2016  zm->iteration_cnt--;
2017  send_lookup_response(zm->nc, 0, zone_key, name, rd_count, rd);
2018  if ((0 == zm->iteration_cnt) && (0 != zm->limit))
2019  {
2020  /* We are done with the current iteration batch, AND the
2021  client would right now accept more, so go again! */
2022  GNUNET_assert(NULL == zm->task);
2024  }
2025 }
struct NamestoreClient * nc
Namestore client which intiated this zone monitor.
uint64_t iteration_cnt
How many more requests may we receive from the iterator before it is at the limit we gave it...
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static void send_lookup_response(struct NamestoreClient *nc, uint32_t request_id, const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key, const char *name, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Generate a struct LookupNameResponseMessage and send it to the given client using the given notificat...
uint64_t seq
Last sequence number in the zone iteration used to address next result of the zone iteration in the s...
static struct GNUNET_NAMESTORE_ZoneMonitor * zm
Monitor handle.
#define GNUNET_NO
Definition: gnunet_common.h:78
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
static void monitor_iteration_next(void *cls)
Obtain the next datum during the zone monitor&#39;s zone initial iteration.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1264
uint64_t limit
Current limit of how many more messages we are allowed to queue to this monitor.
struct GNUNET_SCHEDULER_Task * task
Task active during initial iteration.
const char * name
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
A namestore monitor.
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◆ handle_monitor_start()

static void handle_monitor_start ( void *  cls,
const struct ZoneMonitorStartMessage zis_msg 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_START message.

Parameters
clsthe client sending the message
zis_msgmessage from the client

Definition at line 2035 of file gnunet-service-namestore.c.

References NamestoreClient::client, GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_new, GNUNET_notification_context_add(), GNUNET_SCHEDULER_add_now(), GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_mark_monitor(), GNUNET_YES, ZoneMonitor::in_first_iteration, ZoneMonitorStartMessage::iterate_first, ZoneMonitor::limit, monitor_iteration_next(), monitor_sync(), NamestoreClient::mq, ZoneIteration::nc, ZoneMonitor::nc, ZoneMonitor::task, zm, ZoneMonitor::zone, and ZoneMonitorStartMessage::zone.

2036 {
2037  struct NamestoreClient *nc = cls;
2038  struct ZoneMonitor *zm;
2039 
2040  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received ZONE_MONITOR_START message\n");
2041  zm = GNUNET_new(struct ZoneMonitor);
2042  zm->nc = nc;
2043  zm->zone = zis_msg->zone;
2044  zm->limit = 1;
2045  zm->in_first_iteration = (GNUNET_YES == ntohl(zis_msg->iterate_first));
2050  if (zm->in_first_iteration)
2052  else
2053  monitor_sync(zm);
2054 }
static struct GNUNET_NotificationContext * monitor_nc
Notification context shared by all monitors.
struct GNUNET_MQ_Handle * mq
Message queue for transmission to client.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
struct NamestoreClient * nc
Namestore client which intiated this zone monitor.
static struct ZoneMonitor * monitor_head
First active zone monitor.
static struct GNUNET_NAMESTORE_ZoneMonitor * zm
Monitor handle.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
void GNUNET_notification_context_add(struct GNUNET_NotificationContext *nc, struct GNUNET_MQ_Handle *mq)
Add a subscriber to the notification context.
Definition: nc.c:158
static void monitor_iteration_next(void *cls)
Obtain the next datum during the zone monitor&#39;s zone initial iteration.
static struct ZoneMonitor * monitor_tail
Last active zone monitor.
A namestore client.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1264
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Zone key.
Definition: namestore.h:306
static void monitor_sync(struct ZoneMonitor *zm)
Send &#39;sync&#39; message to zone monitor, we&#39;re now in sync.
uint64_t limit
Current limit of how many more messages we are allowed to queue to this monitor.
int in_first_iteration
Are we (still) in the initial iteration pass?
void GNUNET_SERVICE_client_mark_monitor(struct GNUNET_SERVICE_Client *c)
Set the &#39;monitor&#39; flag on this client.
Definition: service.c:2394
struct GNUNET_SERVICE_Client * client
The client.
struct GNUNET_SCHEDULER_Task * task
Task active during initial iteration.
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
uint32_t iterate_first
GNUNET_YES to first iterate over all records, GNUNET_NO to only monitor changes.o ...
Definition: namestore.h:301
struct GNUNET_CRYPTO_EcdsaPrivateKey zone
Private key of the zone.
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
A namestore monitor.
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◆ handle_monitor_next()

static void handle_monitor_next ( void *  cls,
const struct ZoneMonitorNextMessage nm 
)
static

Handles a GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_NEXT message.

Parameters
clsthe client sending the message
nmmessage from the client

Definition at line 2103 of file gnunet-service-namestore.c.

References NamestoreClient::client, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_ntohll(), GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_cancel(), GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_TIME_absolute_get(), GNUNET_YES, ZoneMonitor::in_first_iteration, ZoneMonitor::iteration_cnt, ZoneMonitor::limit, ZoneMonitorNextMessage::limit, monitor_iteration_next(), MONITOR_STALL_WARN_DELAY, monitor_unblock(), ZoneIteration::nc, ZoneMonitor::nc, ZoneMonitor::next, ZoneMonitor::sa_wait_warning, ZoneMonitor::sa_waiting, ZoneMonitor::sa_waiting_start, ZoneMonitor::task, warn_monitor_slow(), and zm.

2104 {
2105  struct NamestoreClient *nc = cls;
2106  struct ZoneMonitor *zm;
2107  uint64_t inc;
2108 
2109  inc = GNUNET_ntohll(nm->limit);
2111  "Received ZONE_MONITOR_NEXT message with limit %llu\n",
2112  (unsigned long long)inc);
2113  for (zm = monitor_head; NULL != zm; zm = zm->next)
2114  if (zm->nc == nc)
2115  break;
2116  if (NULL == zm)
2117  {
2118  GNUNET_break(0);
2120  return;
2121  }
2123  if (zm->limit + inc < zm->limit)
2124  {
2125  GNUNET_break(0);
2127  return;
2128  }
2129  zm->limit += inc;
2130  if ((zm->in_first_iteration) && (zm->limit == inc))
2131  {
2132  /* We are still iterating, and the previous iteration must
2133  have stopped due to the client's limit, so continue it! */
2134  GNUNET_assert(NULL == zm->task);
2136  }
2137  GNUNET_assert(zm->iteration_cnt <= zm->limit);
2138  if ((zm->limit > zm->iteration_cnt) && (zm->sa_waiting))
2139  {
2140  monitor_unblock(zm);
2141  }
2142  else if (GNUNET_YES == zm->sa_waiting)
2143  {
2144  if (NULL != zm->sa_wait_warning)
2147  zm->sa_wait_warning =
2150  zm);
2151  }
2152 }
struct NamestoreClient * nc
Namestore client which intiated this zone monitor.
uint64_t iteration_cnt
How many more requests may we receive from the iterator before it is at the limit we gave it...
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct ZoneMonitor * monitor_head
First active zone monitor.
struct GNUNET_TIME_Absolute sa_waiting_start
Since when are we blocked on this monitor?
static struct GNUNET_NAMESTORE_ZoneMonitor * zm
Monitor handle.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
uint64_t limit
Number of records to return to the iterator in one shot (before #GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_M...
Definition: namestore.h:329
static void monitor_iteration_next(void *cls)
Obtain the next datum during the zone monitor&#39;s zone initial iteration.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1237
A namestore client.
#define MONITOR_STALL_WARN_DELAY
If a monitor takes more than 1 minute to process an event, print a warning.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1264
uint64_t limit
Current limit of how many more messages we are allowed to queue to this monitor.
int in_first_iteration
Are we (still) in the initial iteration pass?
struct GNUNET_SERVICE_Client * client
The client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
struct GNUNET_SCHEDULER_Task * task
Task active during initial iteration.
static struct GNUNET_PEERINFO_NotifyContext * nc
Iterator context.
#define GNUNET_log(kind,...)
struct ZoneMonitor * next
Next element in the DLL.
#define GNUNET_YES
Definition: gnunet_common.h:77
struct GNUNET_SCHEDULER_Task * sa_wait_warning
Task to warn about slow monitors.
int sa_waiting
Is there a store activity waiting for this monitor? We only raise the flag when it happens and search...
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
static void warn_monitor_slow(void *cls)
Print a warning that one of our monitors is no longer reacting.
static void monitor_unblock(struct ZoneMonitor *zm)
Function called when the monitor is ready for more data, and we should thus unblock PUT operations th...
uint64_t GNUNET_ntohll(uint64_t n)
Convert unsigned 64-bit integer to host byte order.
Definition: common_endian.c:48
A namestore monitor.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ run()

static void run ( void *  cls,
const struct GNUNET_CONFIGURATION_Handle cfg,
struct GNUNET_SERVICE_Handle service 
)
static

Process namestore requests.

Parameters
clsclosure
cfgconfiguration to use
servicethe initialized service

Definition at line 2163 of file gnunet-service-namestore.c.

References cache_keys, cfg, cleanup_task(), client_connect_cb(), client_disconnect_cb(), db_lib_name, disable_namecache, GNUNET_asprintf(), GNUNET_assert, GNUNET_CONFIGURATION_get_value_string(), GNUNET_CONFIGURATION_get_value_yesno(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_log, GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_NEXT, GNUNET_MESSAGE_TYPE_NAMESTORE_MONITOR_START, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP, GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP, GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME, GNUNET_MQ_handler_end, GNUNET_MQ_hd_fixed_size, GNUNET_MQ_hd_var_size, GNUNET_NAMECACHE_connect(), GNUNET_notification_context_create(), GNUNET_OK, GNUNET_PLUGIN_load(), GNUNET_SCHEDULER_add_shutdown(), GNUNET_SCHEDULER_shutdown(), GNUNET_SERVICE_MAIN(), GNUNET_SERVICE_OPTION_NONE, GNUNET_STATISTICS_create(), GNUNET_YES, iteration_start(), and zone_to_name().

2166 {
2167  char *database;
2168 
2169  (void)cls;
2170  (void)service;
2171  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Starting namestore service\n");
2172  cache_keys =
2173  GNUNET_CONFIGURATION_get_value_yesno(cfg, "namestore", "CACHE_KEYS");
2175  GNUNET_CONFIGURATION_get_value_yesno(cfg, "namecache", "DISABLE");
2176  GSN_cfg = cfg;
2179  {
2181  GNUNET_assert(NULL != namecache);
2182  }
2183  /* Loading database plugin */
2185  "namestore",
2186  "database",
2187  &database))
2188  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
2189 
2190  GNUNET_asprintf(&db_lib_name, "libgnunet_plugin_namestore_%s", database);
2192  GNUNET_free(database);
2193  statistics = GNUNET_STATISTICS_create("namestore", cfg);
2195  if (NULL == GSN_database)
2196  {
2198  "Could not load database backend `%s'\n",
2199  db_lib_name);
2201  return;
2202  }
2203 }
struct GNUNET_NAMECACHE_Handle * GNUNET_NAMECACHE_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
Connect to the namecache service.
static char * db_lib_name
Name of the database plugin.
static struct GNUNET_NotificationContext * monitor_nc
Notification context shared by all monitors.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received, or when GNUNET_SCHEDULER_shutdown() is being invoked.
Definition: scheduler.c:1284
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:517
static int disable_namecache
Use the namecache? Doing so creates additional cryptographic operations whenever we touch a record...
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
int GNUNET_CONFIGURATION_get_value_string(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be a string.
static struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
Definition: gnunet-arm.c:104
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
struct GNUNET_NotificationContext * GNUNET_notification_context_create(unsigned int queue_length)
Create a new notification context.
Definition: nc.c:119
static const struct GNUNET_CONFIGURATION_Handle * GSN_cfg
Configuration handle.
static struct GNUNET_NAMESTORE_PluginFunctions * GSN_database
Database handle.
#define GNUNET_log(kind,...)
static void cleanup_task(void *cls)
Task run during shutdown.
#define GNUNET_YES
Definition: gnunet_common.h:77
void * GNUNET_PLUGIN_load(const char *library_name, void *arg)
Setup plugin (runs the "init" callback and returns whatever "init" returned).
Definition: plugin.c:206
static struct GNUNET_NAMECACHE_Handle * namecache
Namecache handle.
static int cache_keys
Optimize block insertion by caching map of private keys to public keys in memory? ...
int GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:

◆ GNUNET_SERVICE_MAIN()

Define "main" method using service macro.

Referenced by run().

Here is the caller graph for this function:

Variable Documentation

◆ nick_cache

struct NickCache nick_cache[16]
static

We cache nick records to reduce DB load.

Definition at line 328 of file gnunet-service-namestore.c.

Referenced by cache_nick(), and get_nick_record().

◆ zero

const struct GNUNET_CRYPTO_EcdsaPrivateKey zero
static

◆ GSN_cfg

const struct GNUNET_CONFIGURATION_Handle* GSN_cfg
static

Configuration handle.

Definition at line 338 of file gnunet-service-namestore.c.

◆ statistics

struct GNUNET_STATISTICS_Handle* statistics
static

Handle to the statistics service.

Definition at line 343 of file gnunet-service-namestore.c.

◆ namecache

struct GNUNET_NAMECACHE_Handle* namecache
static

Namecache handle.

Definition at line 348 of file gnunet-service-namestore.c.

◆ GSN_database

struct GNUNET_NAMESTORE_PluginFunctions* GSN_database
static

Database handle.

Definition at line 353 of file gnunet-service-namestore.c.

◆ db_lib_name

char* db_lib_name
static

Name of the database plugin.

Definition at line 358 of file gnunet-service-namestore.c.

Referenced by cleanup_task(), and run().

◆ cop_head

struct CacheOperation* cop_head
static

Head of cop DLL.

Definition at line 363 of file gnunet-service-namestore.c.

◆ cop_tail

struct CacheOperation* cop_tail
static

Tail of cop DLL.

Definition at line 368 of file gnunet-service-namestore.c.

◆ monitor_head

struct ZoneMonitor* monitor_head
static

First active zone monitor.

Definition at line 373 of file gnunet-service-namestore.c.

Referenced by handle_record_store().

◆ monitor_tail

struct ZoneMonitor* monitor_tail
static

Last active zone monitor.

Definition at line 378 of file gnunet-service-namestore.c.

◆ sa_head

struct StoreActivity* sa_head
static

Head of DLL of monitor-blocked store activities.

Definition at line 383 of file gnunet-service-namestore.c.

Referenced by monitor_unblock().

◆ sa_tail

struct StoreActivity* sa_tail
static

Tail of DLL of monitor-blocked store activities.

Definition at line 388 of file gnunet-service-namestore.c.

◆ monitor_nc

struct GNUNET_NotificationContext* monitor_nc
static

Notification context shared by all monitors.

Definition at line 393 of file gnunet-service-namestore.c.

◆ cache_keys

int cache_keys
static

Optimize block insertion by caching map of private keys to public keys in memory?

Definition at line 399 of file gnunet-service-namestore.c.

Referenced by refresh_block(), and run().

◆ disable_namecache

int disable_namecache
static

Use the namecache? Doing so creates additional cryptographic operations whenever we touch a record.

Definition at line 405 of file gnunet-service-namestore.c.

Referenced by refresh_block(), and run().