GNUnet  0.11.x
Data Structures | Functions | Variables
gnunet-service-gns.c File Reference

GNU Name System (main service) More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_dns_service.h"
#include "gnunet_dnsparser_lib.h"
#include "gnunet_dht_service.h"
#include "gnunet_namecache_service.h"
#include "gnunet_gnsrecord_lib.h"
#include "gnunet_gns_service.h"
#include "gnunet_statistics_service.h"
#include "gns.h"
#include "gnunet-service-gns_resolver.h"
#include "gnunet-service-gns_interceptor.h"
#include "gnunet_protocols.h"
Include dependency graph for gnunet-service-gns.c:

Go to the source code of this file.

Data Structures

struct  ClientLookupHandle
 Handle to a lookup operation from client via API. More...
 
struct  GnsClient
 Information we track per connected client. More...
 
struct  GNS_TopLevelDomain
 Representation of a TLD, mapping the respective TLD string (e.g. More...
 

Functions

int GNS_find_tld (const char *tld_str, struct GNUNET_IDENTITY_PublicKey *pkey)
 Find GNS zone belonging to TLD tld. More...
 
const char * GNS_get_tld (const char *name)
 Obtain the TLD of the given name. More...
 
static void shutdown_task (void *cls)
 Task run during shutdown. 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 send_lookup_response (void *cls, uint32_t rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 Reply to client with the result from our lookup. More...
 
static int check_lookup (void *cls, const struct LookupMessage *l_msg)
 Checks a GNUNET_MESSAGE_TYPE_GNS_LOOKUP message. More...
 
static void handle_lookup (void *cls, const struct LookupMessage *sh_msg)
 Handle lookup requests from client. More...
 
static void read_service_conf (void *cls, const char *section, const char *option, const char *value)
 Reads the configuration and populates TLDs. More...
 
static void run (void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *service)
 Process GNS requests. More...
 
 GNUNET_SERVICE_MAIN ("gns", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_var_size(lookup, GNUNET_MESSAGE_TYPE_GNS_LOOKUP, struct LookupMessage, NULL), GNUNET_MQ_handler_end())
 Define "main" method using service macro. More...
 

Variables

static struct GNUNET_DHT_Handledht_handle
 Our handle to the DHT. More...
 
static struct GNUNET_NAMECACHE_Handlenamecache_handle
 Our handle to the namecache service. More...
 
static int v6_enabled
 GNUNET_YES if ipv6 is supported More...
 
static int v4_enabled
 GNUNET_YES if ipv4 is supported More...
 
static struct GNUNET_STATISTICS_Handlestatistics
 Handle to the statistics service. More...
 
static struct GNS_TopLevelDomaintld_head
 Head of DLL of TLDs we map to GNS zones. More...
 
static struct GNS_TopLevelDomaintld_tail
 Tail of DLL of TLDs we map to GNS zones. More...
 

Detailed Description

GNU Name System (main service)

Author
Martin Schanzenbach
Christian Grothoff

Definition in file gnunet-service-gns.c.

Function Documentation

◆ GNS_find_tld()

int GNS_find_tld ( const char *  tld_str,
struct GNUNET_IDENTITY_PublicKey pkey 
)

Find GNS zone belonging to TLD tld.

Parameters
tld_strtop-level domain to look up
[out]pkeypublic key to set
Returns
GNUNET_YES if tld was found GNUNET_NO if not

Definition at line 179 of file gnunet-service-gns.c.

181 {
182  if ('\0' == *tld_str)
183  return GNUNET_NO;
184  for (struct GNS_TopLevelDomain *tld = tld_head;
185  NULL != tld;
186  tld = tld->next)
187  {
188  if (0 == strcasecmp (tld_str,
189  tld->tld))
190  {
191  *pkey = tld->pkey;
192  return GNUNET_YES;
193  }
194  }
195  if (GNUNET_OK ==
196  GNUNET_GNSRECORD_zkey_to_pkey (tld_str + 1,
197  pkey))
198  return GNUNET_YES; /* TLD string *was* the public key */
199  return GNUNET_NO;
200 }
static char * pkey
Public key of the zone to look in, in ASCII.
static struct GNS_TopLevelDomain * tld_head
Head of DLL of TLDs we map to GNS zones.
@ GNUNET_OK
Definition: gnunet_common.h:95
@ GNUNET_YES
Definition: gnunet_common.h:97
@ GNUNET_NO
Definition: gnunet_common.h:94
int GNUNET_GNSRECORD_zkey_to_pkey(const char *zkey, struct GNUNET_IDENTITY_PublicKey *pkey)
Convert an absolute domain name to the respective public key.
Representation of a TLD, mapping the respective TLD string (e.g.
struct GNS_TopLevelDomain * next
Kept in a DLL, as there are unlikely enough of these to warrant a hash map.

References GNUNET_GNSRECORD_zkey_to_pkey(), GNUNET_NO, GNUNET_OK, GNUNET_YES, pkey, GNS_TopLevelDomain::tld, and tld_head.

Referenced by handle_dns_request().

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◆ GNS_get_tld()

const char* GNS_get_tld ( const char *  name)

Obtain the TLD of the given name.

Parameters
namea name
Returns
the part of name after the last ".", or name if name does not contain a "."

Definition at line 211 of file gnunet-service-gns.c.

212 {
213  const char *tld;
214 
215  tld = strrchr (name,
216  (unsigned char) '.');
217  if (NULL == tld)
218  tld = name;
219  else
220  tld++; /* skip the '.' */
221  return tld;
222 }
const char * name

References name, and GNS_TopLevelDomain::tld.

Referenced by handle_dns_request(), handle_gns_cname_result(), and recursive_gns2dns_resolution().

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◆ shutdown_task()

static void shutdown_task ( void *  cls)
static

Task run during shutdown.

Parameters
clsunused, NULL

Definition at line 231 of file gnunet-service-gns.c.

232 {
233  struct GNS_TopLevelDomain *tld;
234 
235  (void) cls;
237  "Shutting down!\n");
240  if (NULL != statistics)
241  {
243  GNUNET_NO);
244  statistics = NULL;
245  }
246  if (NULL != namecache_handle)
247  {
249  namecache_handle = NULL;
250  }
251  if (NULL != dht_handle)
252  {
254  dht_handle = NULL;
255  }
256  while (NULL != (tld = tld_head))
257  {
259  tld_tail,
260  tld);
261  GNUNET_free (tld->tld);
262  GNUNET_free (tld);
263  }
264 }
static struct GNS_TopLevelDomain * tld_tail
Tail of DLL of TLDs we map to GNS zones.
static struct GNUNET_STATISTICS_Handle * statistics
Handle to the statistics service.
static struct GNUNET_DHT_Handle * dht_handle
Our handle to the DHT.
static struct GNUNET_NAMECACHE_Handle * namecache_handle
Our handle to the namecache service.
void GNS_interceptor_done()
Disconnect from interceptor.
void GNS_resolver_done()
Shutdown resolver.
#define GNUNET_log(kind,...)
void GNUNET_DHT_disconnect(struct GNUNET_DHT_Handle *handle)
Shutdown connection with the DHT service.
Definition: dht_api.c:918
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
@ GNUNET_ERROR_TYPE_DEBUG
#define GNUNET_free(ptr)
Wrapper around free.
void GNUNET_NAMECACHE_disconnect(struct GNUNET_NAMECACHE_Handle *h)
Disconnect from the namecache service (and free associated resources).
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).
char * tld
Top-level domain as a string, including leading ".".

References dht_handle, GNS_interceptor_done(), GNS_resolver_done(), GNUNET_CONTAINER_DLL_remove, GNUNET_DHT_disconnect(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, GNUNET_NAMECACHE_disconnect(), GNUNET_NO, GNUNET_STATISTICS_destroy(), namecache_handle, statistics, GNS_TopLevelDomain::tld, tld_head, and tld_tail.

Referenced by run().

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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.

Parameters
clsclosure
clientidentification of the client
app_ctxclient

Definition at line 275 of file gnunet-service-gns.c.

278 {
279  struct ClientLookupHandle *clh;
280  struct GnsClient *gc = app_ctx;
281 
282  (void) cls;
284  "Client %p disconnected\n",
285  client);
286  while (NULL != (clh = gc->clh_head))
287  {
288  if (NULL != clh->lookup)
291  gc->clh_tail,
292  clh);
293  GNUNET_free (clh);
294  }
295  GNUNET_free (gc);
296 }
void GNS_resolver_lookup_cancel(struct GNS_ResolverHandle *rh)
Cancel active resolution (i.e.
Handle to a lookup operation from client via API.
struct GNS_ResolverHandle * lookup
Active handle for the lookup.
Information we track per connected client.
struct ClientLookupHandle * clh_tail
Tail of the DLL.
struct ClientLookupHandle * clh_head
Head of the DLL.
struct GNUNET_SERVICE_Client * client
The client.

References GnsClient::clh_head, GnsClient::clh_tail, GnsClient::client, GNS_resolver_lookup_cancel(), GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, and ClientLookupHandle::lookup.

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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 308 of file gnunet-service-gns.c.

311 {
312  struct GnsClient *gc;
313 
314  (void) cls;
316  "Client %p connected\n",
317  client);
318  gc = GNUNET_new (struct GnsClient);
319  gc->client = client;
320  gc->mq = mq;
321  return gc;
322 }
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_MQ_Handle * mq
The MQ.

References GnsClient::client, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_new, mq, and GnsClient::mq.

◆ send_lookup_response()

static void send_lookup_response ( void *  cls,
uint32_t  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

Reply to client with the result from our lookup.

Parameters
clsthe closure (our client lookup handle)
rd_countthe number of records in rd
rdthe record data

Definition at line 333 of file gnunet-service-gns.c.

336 {
337  struct ClientLookupHandle *clh = cls;
338  struct GnsClient *gc = clh->gc;
339  struct GNUNET_MQ_Envelope *env;
340  struct LookupResultMessage *rmsg;
341  ssize_t len;
342 
344  "Sending LOOKUP_RESULT message with %u results\n",
345  (unsigned int) rd_count);
347  rd);
348  if (len < 0)
349  {
350  GNUNET_break (0);
352  return;
353  }
354  if (len > UINT16_MAX - sizeof(*rmsg))
355  {
356  GNUNET_break (0);
358  return;
359  }
360  env = GNUNET_MQ_msg_extra (rmsg,
361  len,
363  rmsg->id = clh->request_id;
364  rmsg->rd_count = htonl (rd_count);
365  GNUNET_assert (len ==
367  rd,
368  len,
369  (char *) &rmsg[1]));
371  env);
373  gc->clh_tail,
374  clh);
375  GNUNET_free (clh);
377  "Completed lookups", 1,
378  GNUNET_NO);
380  "Records resolved",
381  rd_count,
382  GNUNET_NO);
383 }
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
uint16_t len
length of data (which is always a uint32_t, but presumably this can be used to specify that fewer byt...
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.
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_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
#define GNUNET_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
#define GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT
Service response to name resolution request from client.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2325
struct GNUNET_MQ_Handle * GNUNET_SERVICE_client_get_mq(struct GNUNET_SERVICE_Client *c)
Obtain the message queue of c.
Definition: service.c:2438
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
struct GnsClient * gc
Client handle.
uint32_t request_id
request id
Message from GNS service to client: new results.
Definition: gns.h:79
uint32_t id
Unique identifier for this request (for key collisions).
Definition: gns.h:88
uint32_t rd_count
The number of records contained in response.
Definition: gns.h:95

References GnsClient::clh_head, GnsClient::clh_tail, GnsClient::client, env, ClientLookupHandle::gc, GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_GNSRECORD_records_get_size(), GNUNET_GNSRECORD_records_serialize(), GNUNET_log, GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_NO, GNUNET_SERVICE_client_drop(), GNUNET_SERVICE_client_get_mq(), GNUNET_STATISTICS_update(), LookupResultMessage::id, len, LookupResultMessage::rd_count, ClientLookupHandle::request_id, and statistics.

Referenced by handle_lookup().

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◆ check_lookup()

static int check_lookup ( void *  cls,
const struct LookupMessage l_msg 
)
static

Checks a GNUNET_MESSAGE_TYPE_GNS_LOOKUP message.

Parameters
clsclient sending the message
l_msgmessage of type struct LookupMessage
Returns
GNUNET_OK if l_msg is well-formed

Definition at line 394 of file gnunet-service-gns.c.

396 {
397  size_t nlen;
398 
399  (void) cls;
401  nlen = ntohs (l_msg->header.size) - sizeof(struct LookupMessage);
403  {
404  GNUNET_break (0);
405  return GNUNET_SYSERR;
406  }
407  return GNUNET_OK;
408 }
@ GNUNET_SYSERR
Definition: gnunet_common.h:93
#define GNUNET_DNSPARSER_MAX_NAME_LENGTH
Maximum length of a name in DNS.
#define GNUNET_MQ_check_zero_termination(m)
Insert code for a "check_" function that verifies that a given variable-length message received over ...
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.
Message from client to GNS service to lookup records.
Definition: gns.h:37
struct GNUNET_MessageHeader header
Header of type GNUNET_MESSAGE_TYPE_GNS_LOOKUP.
Definition: gns.h:41

References GNUNET_break, GNUNET_DNSPARSER_MAX_NAME_LENGTH, GNUNET_MQ_check_zero_termination, GNUNET_OK, GNUNET_SYSERR, LookupMessage::header, and GNUNET_MessageHeader::size.

◆ handle_lookup()

static void handle_lookup ( void *  cls,
const struct LookupMessage sh_msg 
)
static

Handle lookup requests from client.

Parameters
clsthe closure
clientthe client
messagethe message

Definition at line 419 of file gnunet-service-gns.c.

421 {
422  struct GnsClient *gc = cls;
424  struct ClientLookupHandle *clh;
425  char *nameptr = name;
426  const char *utf_in;
427 
429  utf_in = (const char *) &sh_msg[1];
431  nameptr);
433  "Received LOOKUP `%s' message\n",
434  name);
435  clh = GNUNET_new (struct ClientLookupHandle);
437  gc->clh_tail,
438  clh);
439  clh->gc = gc;
440  clh->request_id = sh_msg->id;
441  if ((GNUNET_DNSPARSER_TYPE_A == ntohl (sh_msg->type)) &&
442  (GNUNET_OK != v4_enabled))
443  {
445  "LOOKUP: Query for A record but AF_INET not supported!");
447  0,
448  NULL);
449  return;
450  }
451  if ((GNUNET_DNSPARSER_TYPE_AAAA == ntohl (sh_msg->type)) &&
452  (GNUNET_OK != v6_enabled))
453  {
455  "LOOKUP: Query for AAAA record but AF_INET6 not supported!");
457  0,
458  NULL);
459  return;
460  }
461  clh->lookup = GNS_resolver_lookup (&sh_msg->zone,
462  ntohl (sh_msg->type),
463  name,
464  (enum GNUNET_GNS_LocalOptions) ntohs (
465  sh_msg->options),
466  ntohs (sh_msg->recursion_depth_limit),
467  &send_lookup_response, clh);
469  "Lookup attempts",
470  1, GNUNET_NO);
471 }
static void send_lookup_response(void *cls, uint32_t rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Reply to client with the result from our lookup.
static int v4_enabled
GNUNET_YES if ipv4 is supported
static int v6_enabled
GNUNET_YES if ipv6 is supported
struct GNS_ResolverHandle * GNS_resolver_lookup(const struct GNUNET_IDENTITY_PublicKey *zone, uint32_t record_type, const char *name, enum GNUNET_GNS_LocalOptions options, uint16_t recursion_depth_limit, GNS_ResultProcessor proc, void *proc_cls)
Lookup of a record in a specific zone calls lookup result processor on result.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
#define GNUNET_DNSPARSER_TYPE_A
#define GNUNET_DNSPARSER_TYPE_AAAA
GNUNET_GNS_LocalOptions
Options for the GNS lookup.
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2244
void GNUNET_STRINGS_utf8_tolower(const char *input, char *output)
Convert the utf-8 input string to lower case.
Definition: strings.c:444
int16_t options
Local options for where to look for results (an enum GNUNET_GNS_LocalOptions in NBO).
Definition: gns.h:57
uint32_t id
Unique identifier for this request (for key collisions).
Definition: gns.h:46
uint16_t recursion_depth_limit
Recursion depth limit, i.e.
Definition: gns.h:64
int32_t type
the type of record to look up
Definition: gns.h:69
struct GNUNET_IDENTITY_PublicKey zone
Zone that is to be used for lookup.
Definition: gns.h:51

References GnsClient::clh_head, GnsClient::clh_tail, GnsClient::client, ClientLookupHandle::gc, GNS_resolver_lookup(), GNUNET_CONTAINER_DLL_insert, GNUNET_DNSPARSER_MAX_NAME_LENGTH, GNUNET_DNSPARSER_TYPE_A, GNUNET_DNSPARSER_TYPE_AAAA, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_new, GNUNET_NO, GNUNET_OK, GNUNET_SERVICE_client_continue(), GNUNET_STATISTICS_update(), GNUNET_STRINGS_utf8_tolower(), LookupMessage::id, ClientLookupHandle::lookup, name, LookupMessage::options, LookupMessage::recursion_depth_limit, ClientLookupHandle::request_id, send_lookup_response(), statistics, LookupMessage::type, v4_enabled, v6_enabled, and LookupMessage::zone.

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◆ read_service_conf()

static void read_service_conf ( void *  cls,
const char *  section,
const char *  option,
const char *  value 
)
static

Reads the configuration and populates TLDs.

Parameters
clsunused
sectionname of section in config, always "gns"
optionname of the option, TLDs start with "."
valuevalue for the option, public key for TLDs

Definition at line 483 of file gnunet-service-gns.c.

487 {
489  struct GNS_TopLevelDomain *tld;
490 
491  (void) cls;
492  (void) section;
493  if (option[0] != '.')
494  return;
495  if (GNUNET_OK !=
497  strlen (value),
498  &pk,
499  sizeof(pk)))
500  {
502  section,
503  option,
504  _ (
505  "Properly base32-encoded public key required"));
506  return;
507  }
508  tld = GNUNET_new (struct GNS_TopLevelDomain);
509  tld->tld = GNUNET_strdup (&option[1]);
510  tld->pkey = pk;
512  tld_tail,
513  tld);
514 }
struct GNUNET_IDENTITY_PrivateKey pk
Private key from command line option, or NULL.
static char * value
Value of the record to add/remove.
void GNUNET_log_config_invalid(enum GNUNET_ErrorType kind, const char *section, const char *option, const char *required)
Log error message about invalid configuration option value.
@ GNUNET_ERROR_TYPE_ERROR
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
enum GNUNET_GenericReturnValue GNUNET_STRINGS_string_to_data(const char *enc, size_t enclen, void *out, size_t out_size)
Convert CrockfordBase32 encoding back to data.
Definition: strings.c:775
#define _(String)
GNU gettext support macro.
Definition: platform.h:177
An identity key as per LSD0001.

References _, GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_ERROR, GNUNET_log_config_invalid(), GNUNET_new, GNUNET_OK, GNUNET_strdup, GNUNET_STRINGS_string_to_data(), pk, GNS_TopLevelDomain::tld, tld_head, tld_tail, and value.

Referenced by run().

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◆ run()

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

Process GNS requests.

Parameters
clsclosure
serverthe initialized server
cconfiguration to use

Definition at line 525 of file gnunet-service-gns.c.

528 {
529  unsigned long long max_parallel_bg_queries = 16;
530 
532  "gns",
534  NULL);
535  v6_enabled = GNUNET_NETWORK_test_pf (PF_INET6);
538  if (NULL == namecache_handle)
539  {
541  _ ("Failed to connect to the namecache!\n"));
543  return;
544  }
545  if (GNUNET_OK ==
547  "gns",
548  "MAX_PARALLEL_BACKGROUND_QUERIES",
549  &max_parallel_bg_queries))
550  {
552  "Number of allowed parallel background queries: %llu\n",
553  max_parallel_bg_queries);
554  }
556  (unsigned int) max_parallel_bg_queries);
557  if (NULL == dht_handle)
558  {
560  _ ("Could not connect to DHT!\n"));
562  NULL);
563  return;
564  }
566  dht_handle,
567  c,
568  max_parallel_bg_queries);
569  if ((GNUNET_YES ==
571  "gns",
572  "INTERCEPT_DNS")) &&
573  (GNUNET_SYSERR ==
575  {
576  GNUNET_break (0);
578  NULL);
579  return;
580  }
582  c);
584  NULL);
585 }
static void shutdown_task(void *cls)
Task run during shutdown.
static void read_service_conf(void *cls, const char *section, const char *option, const char *value)
Reads the configuration and populates TLDs.
int GNS_interceptor_init(const struct GNUNET_CONFIGURATION_Handle *c)
Initialized the interceptor.
void GNS_resolver_init(struct GNUNET_NAMECACHE_Handle *nc, struct GNUNET_DHT_Handle *dht, const struct GNUNET_CONFIGURATION_Handle *c, unsigned long long max_bg_queries)
Initialize the resolver.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_number(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
Get a configuration value that should be a number.
enum GNUNET_GenericReturnValue 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".
void GNUNET_CONFIGURATION_iterate_section_values(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, GNUNET_CONFIGURATION_Iterator iter, void *iter_cls)
Iterate over values of a section in the configuration.
struct GNUNET_DHT_Handle * GNUNET_DHT_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, unsigned int ht_len)
Initialize the connection with the DHT service.
Definition: dht_api.c:890
struct GNUNET_NAMECACHE_Handle * GNUNET_NAMECACHE_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
Connect to the namecache service.
int GNUNET_NETWORK_test_pf(int pf)
Test if the given protocol family is supported by this system.
Definition: network.c:85
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:531
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:1296
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,...
Definition: scheduler.c:1331
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.

References _, dht_handle, GNS_interceptor_init(), GNS_resolver_init(), GNUNET_break, GNUNET_CONFIGURATION_get_value_number(), GNUNET_CONFIGURATION_get_value_yesno(), GNUNET_CONFIGURATION_iterate_section_values(), GNUNET_DHT_connect(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_NAMECACHE_connect(), GNUNET_NETWORK_test_pf(), GNUNET_OK, GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_add_shutdown(), GNUNET_SCHEDULER_shutdown(), GNUNET_STATISTICS_create(), GNUNET_SYSERR, GNUNET_YES, namecache_handle, read_service_conf(), shutdown_task(), statistics, v4_enabled, and v6_enabled.

Here is the call graph for this function:

◆ GNUNET_SERVICE_MAIN()

GNUNET_SERVICE_MAIN ( "gns"  ,
GNUNET_SERVICE_OPTION_NONE  ,
run,
client_connect_cb,
client_disconnect_cb,
NULL  ,
GNUNET_MQ_hd_var_size(lookup, GNUNET_MESSAGE_TYPE_GNS_LOOKUP, struct LookupMessage, NULL)  ,
GNUNET_MQ_handler_end()   
)

Define "main" method using service macro.

Variable Documentation

◆ dht_handle

struct GNUNET_DHT_Handle* dht_handle
static

Our handle to the DHT.

Definition at line 138 of file gnunet-service-gns.c.

Referenced by run(), and shutdown_task().

◆ namecache_handle

struct GNUNET_NAMECACHE_Handle* namecache_handle
static

Our handle to the namecache service.

Definition at line 143 of file gnunet-service-gns.c.

Referenced by run(), and shutdown_task().

◆ v6_enabled

int v6_enabled
static

GNUNET_YES if ipv6 is supported

Definition at line 148 of file gnunet-service-gns.c.

Referenced by handle_lookup(), and run().

◆ v4_enabled

int v4_enabled
static

GNUNET_YES if ipv4 is supported

Definition at line 153 of file gnunet-service-gns.c.

Referenced by handle_lookup(), and run().

◆ statistics

struct GNUNET_STATISTICS_Handle* statistics
static

Handle to the statistics service.

Definition at line 158 of file gnunet-service-gns.c.

Referenced by handle_lookup(), run(), send_lookup_response(), and shutdown_task().

◆ tld_head

struct GNS_TopLevelDomain* tld_head
static

Head of DLL of TLDs we map to GNS zones.

Definition at line 163 of file gnunet-service-gns.c.

Referenced by GNS_find_tld(), read_service_conf(), and shutdown_task().

◆ tld_tail

struct GNS_TopLevelDomain* tld_tail
static

Tail of DLL of TLDs we map to GNS zones.

Definition at line 168 of file gnunet-service-gns.c.

Referenced by read_service_conf(), and shutdown_task().