GNUnet  0.10.x
Data Structures | Macros | Functions | Variables
gnunet-dns2gns.c File Reference

DNS server that translates DNS requests to GNS. More...

#include "platform.h"
#include <gnunet_util_lib.h>
#include <gnunet_dnsparser_lib.h>
#include <gnunet_gns_service.h>
#include <gnunet_dnsstub_lib.h>
#include "gns.h"
Include dependency graph for gnunet-dns2gns.c:

Go to the source code of this file.

Data Structures

struct  Request
 Request we should make. More...
 

Macros

#define TIMEOUT   GNUNET_TIME_UNIT_MINUTES
 Timeout for DNS requests. More...
 

Functions

static void do_shutdown (void *cls)
 Task run on shutdown. More...
 
static void send_response (struct Request *request)
 Send the response for the given request and clean up. More...
 
static void do_timeout (void *cls)
 Task run on timeout. More...
 
static void dns_result_processor (void *cls, const struct GNUNET_TUN_DnsHeader *dns, size_t r)
 Iterator called on obtained result for a DNS lookup. More...
 
static void result_processor (void *cls, int was_gns, uint32_t rd_count, const struct GNUNET_GNSRECORD_Data *rd)
 Iterator called on obtained result for a GNS lookup. More...
 
static void handle_request (struct GNUNET_NETWORK_Handle *lsock, const void *addr, size_t addr_len, const char *udp_msg, size_t udp_msg_size)
 Handle DNS request. More...
 
static void read_dns4 (void *cls)
 Task to read IPv4 DNS packets. More...
 
static void read_dns6 (void *cls)
 Task to read IPv6 DNS packets. More...
 
static void run (void *cls, char *const *args, const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *c)
 Main function that will be run. More...
 
int main (int argc, char *const *argv)
 The main function for the dns2gns daemon. More...
 

Variables

static in_addr_t address
 The address to bind to. More...
 
static struct in6_addr address6
 The IPv6 address to bind to. More...
 
struct GNUNET_GNS_Handlegns
 Handle to GNS resolver. More...
 
struct GNUNET_DNSSTUB_Contextdns_stub
 Stub resolver. More...
 
static struct GNUNET_NETWORK_Handlelisten_socket4
 Listen socket for IPv4. More...
 
static struct GNUNET_NETWORK_Handlelisten_socket6
 Listen socket for IPv6. More...
 
static struct GNUNET_SCHEDULER_Taskt4
 Task for IPv4 socket. More...
 
static struct GNUNET_SCHEDULER_Taskt6
 Task for IPv6 socket. More...
 
static char * dns_ip
 IP of DNS server. More...
 
static unsigned int listen_port = 53
 UDP Port we listen on for inbound DNS requests. More...
 
static const struct GNUNET_CONFIGURATION_Handlecfg
 Configuration to use. More...
 

Detailed Description

DNS server that translates DNS requests to GNS.

Author
Christian Grothoff

Definition in file gnunet-dns2gns.c.

Macro Definition Documentation

◆ TIMEOUT

#define TIMEOUT   GNUNET_TIME_UNIT_MINUTES

Timeout for DNS requests.

Definition at line 35 of file gnunet-dns2gns.c.

Referenced by handle_request().

Function Documentation

◆ do_shutdown()

static void do_shutdown ( void *  cls)
static

Task run on shutdown.

Cleans up everything.

Parameters
clsunused

Definition at line 159 of file gnunet-dns2gns.c.

References GNUNET_DNSSTUB_stop(), GNUNET_GNS_disconnect(), GNUNET_NETWORK_socket_close(), and GNUNET_SCHEDULER_cancel().

Referenced by run().

160 {
161  (void) cls;
162  if (NULL != t4)
163  {
165  t4 = NULL;
166  }
167  if (NULL != t6)
168  {
170  t6 = NULL;
171  }
172  if (NULL != listen_socket4)
173  {
175  listen_socket4 = NULL;
176  }
177  if (NULL != listen_socket6)
178  {
180  listen_socket6 = NULL;
181  }
182  if (NULL != gns)
183  {
185  gns = NULL;
186  }
187  if (NULL != dns_stub)
188  {
190  dns_stub = NULL;
191  }
192 }
void GNUNET_DNSSTUB_stop(struct GNUNET_DNSSTUB_Context *ctx)
Cleanup DNSSTUB resolver.
Definition: dnsstub.c:731
static struct GNUNET_NETWORK_Handle * listen_socket4
Listen socket for IPv4.
struct GNUNET_GNS_Handle * gns
Handle to GNS resolver.
static struct GNUNET_SCHEDULER_Task * t4
Task for IPv4 socket.
void GNUNET_GNS_disconnect(struct GNUNET_GNS_Handle *handle)
Shutdown connection with the GNS service.
Definition: gns_api.c:285
static struct GNUNET_NETWORK_Handle * listen_socket6
Listen socket for IPv6.
struct GNUNET_DNSSTUB_Context * dns_stub
Stub resolver.
int GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:604
static struct GNUNET_SCHEDULER_Task * t6
Task for IPv6 socket.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:965
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◆ send_response()

static void send_response ( struct Request request)
static

Send the response for the given request and clean up.

Parameters
requestcontext for the request.

Definition at line 201 of file gnunet-dns2gns.c.

References _, Request::addr, Request::addr_len, buf, GNUNET_DNSPARSER_free_packet(), GNUNET_DNSPARSER_pack(), GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_log, GNUNET_log_strerror, GNUNET_NETWORK_socket_sendto(), GNUNET_SCHEDULER_cancel(), GNUNET_SYSERR, Request::lsock, Request::packet, size, Request::timeout_task, and Request::udp_msg.

Referenced by dns_result_processor(), and result_processor().

202 {
203  char *buf;
204  size_t size;
205  ssize_t sret;
206 
207  if (GNUNET_SYSERR ==
208  GNUNET_DNSPARSER_pack (request->packet,
209  UINT16_MAX /* is this not too much? */,
210  &buf,
211  &size))
212  {
214  _("Failed to pack DNS response into UDP packet!\n"));
215  }
216  else
217  {
218  sret = GNUNET_NETWORK_socket_sendto (request->lsock,
219  buf,
220  size,
221  request->addr,
222  request->addr_len);
223  if ( (sret < 0) ||
224  (size != (size_t) sret) )
226  "sendto");
227  GNUNET_free (buf);
228  }
231  GNUNET_free (request->udp_msg);
232  GNUNET_free (request);
233 }
int GNUNET_DNSPARSER_pack(const struct GNUNET_DNSPARSER_Packet *p, uint16_t max, char **buf, size_t *buf_length)
Given a DNS packet p, generate the corresponding UDP payload.
Definition: dnsparser.c:1259
void GNUNET_DNSPARSER_free_packet(struct GNUNET_DNSPARSER_Packet *p)
Free memory taken by a packet.
Definition: dnsparser.c:854
const void * addr
Destination address to use.
#define _(String)
GNU gettext support macro.
Definition: platform.h:208
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
struct GNUNET_SCHEDULER_Task * timeout_task
Task run on timeout or shutdown to clean up without response.
ssize_t GNUNET_NETWORK_socket_sendto(const struct GNUNET_NETWORK_Handle *desc, const void *message, size_t length, const struct sockaddr *dest_addr, socklen_t dest_len)
Send data to a particular destination (always non-blocking).
Definition: network.c:968
static char buf[2048]
struct GNUNET_DNSPARSER_Packet * packet
Initially, this is the DNS request, it will then be converted to the DNS response.
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
static unsigned int size
Size of the "table".
Definition: peer.c:67
#define GNUNET_log(kind,...)
size_t addr_len
Number of bytes in addr.
struct GNUNET_NETWORK_Handle * lsock
Socket to use for sending the reply.
char * udp_msg
Original UDP request message.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:965
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◆ do_timeout()

static void do_timeout ( void *  cls)
static

Task run on timeout.

Cleans up request.

Parameters
clsstruct Request * of the request to clean up

Definition at line 242 of file gnunet-dns2gns.c.

References Request::dns_lookup, GNUNET_DNSPARSER_free_packet(), GNUNET_DNSSTUB_resolve_cancel(), GNUNET_free, GNUNET_GNS_lookup_with_tld_cancel(), Request::lookup, Request::packet, and Request::udp_msg.

Referenced by dns_result_processor(), and handle_request().

243 {
244  struct Request *request = cls;
245 
246  if (NULL != request->packet)
248  if (NULL != request->lookup)
250  if (NULL != request->dns_lookup)
252  GNUNET_free (request->udp_msg);
253  GNUNET_free (request);
254 }
void * GNUNET_GNS_lookup_with_tld_cancel(struct GNUNET_GNS_LookupWithTldRequest *ltr)
Cancel pending lookup request.
Definition: gns_tld_api.c:330
void GNUNET_DNSPARSER_free_packet(struct GNUNET_DNSPARSER_Packet *p)
Free memory taken by a packet.
Definition: dnsparser.c:854
struct GNUNET_DNSPARSER_Packet * packet
Initially, this is the DNS request, it will then be converted to the DNS response.
Request we should make.
void GNUNET_DNSSTUB_resolve_cancel(struct GNUNET_DNSSTUB_RequestSocket *rs)
Cancel DNS resolution.
Definition: dnsstub.c:571
struct GNUNET_DNSSTUB_RequestSocket * dns_lookup
Our DNS request handle.
struct GNUNET_GNS_LookupWithTldRequest * lookup
Our GNS request handle.
char * udp_msg
Original UDP request message.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ dns_result_processor()

static void dns_result_processor ( void *  cls,
const struct GNUNET_TUN_DnsHeader dns,
size_t  r 
)
static

Iterator called on obtained result for a DNS lookup.

Parameters
clsclosure
dnsthe DNS udp payload
rsize of the DNS payload

Definition at line 265 of file gnunet-dns2gns.c.

References Request::dns_lookup, do_timeout(), GNUNET_DNSPARSER_parse(), GNUNET_DNSSTUB_resolve_cancel(), GNUNET_SCHEDULER_cancel(), GNUNET_TUN_DnsHeader::id, Request::original_request_id, Request::packet, send_response(), and Request::timeout_task.

Referenced by result_processor().

268 {
269  struct Request *request = cls;
270 
271  if (NULL == dns)
272  {
273  /* DNSSTUB gave up, so we trigger timeout early */
275  do_timeout (request);
276  return;
277  }
278  if (request->original_request_id != dns->id)
279  {
280  /* for a another query, ignore */
281  return;
282  }
283  request->packet = GNUNET_DNSPARSER_parse ((char*)dns,
284  r);
286  send_response (request);
287 }
uint16_t id
Unique identifier for the request/response.
static void send_response(struct Request *request)
Send the response for the given request and clean up.
struct GNUNET_SCHEDULER_Task * timeout_task
Task run on timeout or shutdown to clean up without response.
struct GNUNET_DNSPARSER_Packet * GNUNET_DNSPARSER_parse(const char *udp_payload, size_t udp_payload_length)
Parse a UDP payload of a DNS packet in to a nice struct for further processing and manipulation...
Definition: dnsparser.c:662
static void do_timeout(void *cls)
Task run on timeout.
struct GNUNET_DNSPARSER_Packet * packet
Initially, this is the DNS request, it will then be converted to the DNS response.
Request we should make.
void GNUNET_DNSSTUB_resolve_cancel(struct GNUNET_DNSSTUB_RequestSocket *rs)
Cancel DNS resolution.
Definition: dnsstub.c:571
struct GNUNET_DNSSTUB_RequestSocket * dns_lookup
Our DNS request handle.
uint16_t original_request_id
ID of the original request.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:965
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◆ result_processor()

static void result_processor ( void *  cls,
int  was_gns,
uint32_t  rd_count,
const struct GNUNET_GNSRECORD_Data rd 
)
static

Iterator called on obtained result for a GNS lookup.

Parameters
clsclosure
was_gnsGNUNET_NO if the TLD is not configured for GNS
rd_countnumber of records in rd
rdthe records in reply

Definition at line 299 of file gnunet-dns2gns.c.

References GNUNET_TIME_Absolute::abs_value_us, GNUNET_DNSPARSER_Packet::answers, GNUNET_TUN_DnsFlags::authenticated_data, GNUNET_TUN_DnsFlags::authoritative_answer, GNUNET_TUN_DnsFlags::checking_disabled, data, GNUNET_GNSRECORD_Data::data, GNUNET_DNSPARSER_RawRecord::data, GNUNET_DNSPARSER_Record::data, GNUNET_DNSPARSER_RawRecord::data_len, data_size, GNUNET_GNSRECORD_Data::data_size, dns_ip, Request::dns_lookup, dns_result_processor(), GNUNET_DNSPARSER_Record::dns_traffic_class, GNUNET_GNSRECORD_Data::expiration_time, GNUNET_DNSPARSER_Record::expiration_time, GNUNET_DNSPARSER_Packet::flags, GNUNET_array_append, GNUNET_assert, GNUNET_DNSPARSER_free_packet(), GNUNET_DNSPARSER_TYPE_A, GNUNET_DNSPARSER_TYPE_AAAA, GNUNET_DNSPARSER_TYPE_CNAME, GNUNET_DNSSTUB_resolve(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_memcpy, GNUNET_new, GNUNET_NO, GNUNET_strdup, GNUNET_TUN_DNS_CLASS_INTERNET, GNUNET_TUN_DNS_RETURN_CODE_NO_ERROR, GNUNET_DNSPARSER_Record::hostname, GNUNET_DNSPARSER_Packet::id, Request::lookup, GNUNET_TUN_DnsFlags::message_truncated, GNUNET_DNSPARSER_Query::name, GNUNET_DNSPARSER_Record::name, GNUNET_DNSPARSER_Packet::num_answers, Request::original_request_id, Request::packet, GNUNET_DNSPARSER_Packet::queries, GNUNET_TUN_DnsFlags::query_or_response, GNUNET_DNSPARSER_Record::raw, GNUNET_TUN_DnsFlags::recursion_available, GNUNET_TUN_DnsFlags::return_code, send_response(), GNUNET_DNSPARSER_Record::type, Request::udp_msg, Request::udp_msg_size, and GNUNET_TUN_DnsFlags::zero.

Referenced by handle_request().

303 {
304  struct Request *request = cls;
305  struct GNUNET_DNSPARSER_Packet *packet;
306  struct GNUNET_DNSPARSER_Record rec;
307 
308  request->lookup = NULL;
309  if (GNUNET_NO == was_gns)
310  {
311  /* TLD not configured for GNS, fall back to DNS */
313  "Using DNS resolver IP `%s' to resolve `%s'\n",
314  dns_ip,
315  request->packet->queries[0].name);
316  request->original_request_id = request->packet->id;
318  request->packet = NULL;
320  request->udp_msg,
321  request->udp_msg_size,
323  request);
324  return;
325  }
326  packet = request->packet;
327  packet->flags.query_or_response = 1;
329  packet->flags.checking_disabled = 0;
330  packet->flags.authenticated_data = 1;
331  packet->flags.zero = 0;
332  packet->flags.recursion_available = 1;
333  packet->flags.message_truncated = 0;
334  packet->flags.authoritative_answer = 0;
335  //packet->flags.opcode = GNUNET_TUN_DNS_OPCODE_STATUS; // ???
336  for (uint32_t i=0;i<rd_count;i++)
337  {
338  // FIXME: do we need to hanlde #GNUNET_GNSRECORD_RF_SHADOW_RECORD
339  // here? Or should we do this in libgnunetgns?
340  rec.expiration_time.abs_value_us = rd[i].expiration_time;
341  switch (rd[i].record_type)
342  {
344  GNUNET_assert (sizeof (struct in_addr) == rd[i].data_size);
345  rec.name = GNUNET_strdup (packet->queries[0].name);
346  rec.dns_traffic_class = GNUNET_TUN_DNS_CLASS_INTERNET;
347  rec.type = GNUNET_DNSPARSER_TYPE_A;
348  rec.data.raw.data = GNUNET_new (struct in_addr);
349  GNUNET_memcpy (rec.data.raw.data,
350  rd[i].data,
351  rd[i].data_size);
352  rec.data.raw.data_len = sizeof (struct in_addr);
353  GNUNET_array_append (packet->answers,
354  packet->num_answers,
355  rec);
356  break;
358  GNUNET_assert (sizeof (struct in6_addr) == rd[i].data_size);
359  rec.name = GNUNET_strdup (packet->queries[0].name);
360  rec.data.raw.data = GNUNET_new (struct in6_addr);
361  rec.dns_traffic_class = GNUNET_TUN_DNS_CLASS_INTERNET;
362  rec.type = GNUNET_DNSPARSER_TYPE_AAAA;
363  GNUNET_memcpy (rec.data.raw.data,
364  rd[i].data,
365  rd[i].data_size);
366  rec.data.raw.data_len = sizeof (struct in6_addr);
367  GNUNET_array_append (packet->answers,
368  packet->num_answers,
369  rec);
370  break;
372  rec.name = GNUNET_strdup (packet->queries[0].name);
373  rec.data.hostname = GNUNET_strdup (rd[i].data);
374  rec.dns_traffic_class = GNUNET_TUN_DNS_CLASS_INTERNET;
375  rec.type = GNUNET_DNSPARSER_TYPE_CNAME;
376  GNUNET_memcpy (rec.data.hostname,
377  rd[i].data,
378  rd[i].data_size);
379  GNUNET_array_append (packet->answers,
380  packet->num_answers,
381  rec);
382  break;
383  default:
384  /* skip */
385  break;
386  }
387  }
388  send_response (request);
389 }
struct GNUNET_DNSPARSER_Record * answers
Array of all answers in the packet, must contain "num_answers" entries.
unsigned int zero
Always zero.
static void dns_result_processor(void *cls, const struct GNUNET_TUN_DnsHeader *dns, size_t r)
Iterator called on obtained result for a DNS lookup.
#define GNUNET_DNSPARSER_TYPE_CNAME
static char * dns_ip
IP of DNS server.
unsigned int return_code
See GNUNET_TUN_DNS_RETURN_CODE_ defines.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
uint16_t id
DNS ID (to match replies to requests).
void GNUNET_DNSPARSER_free_packet(struct GNUNET_DNSPARSER_Packet *p)
Free memory taken by a packet.
Definition: dnsparser.c:854
#define GNUNET_NO
Definition: gnunet_common.h:81
size_t data_size
Number of bytes in data.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
unsigned int recursion_available
Set to 1 if recursion is available (server -> client)
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
unsigned int num_answers
Number of answers in the packet, should be 0 for queries.
unsigned int authoritative_answer
Set to 1 if this is an authoritative answer.
static void send_response(struct Request *request)
Send the response for the given request and clean up.
unsigned int authenticated_data
Response has been cryptographically verified, RFC 4035.
unsigned int query_or_response
query:0, response:1
#define GNUNET_memcpy(dst, src, n)
const void * data
Binary value stored in the DNS record.
uint64_t expiration_time
Expiration time for the DNS record.
#define GNUNET_TUN_DNS_RETURN_CODE_NO_ERROR
RFC 1035 codes.
unsigned int message_truncated
Set to 1 if message is truncated.
A DNS response record.
struct GNUNET_DNSPARSER_Query * queries
Array of all queries in the packet, must contain "num_queries" entries.
struct GNUNET_DNSPARSER_Packet * packet
Initially, this is the DNS request, it will then be converted to the DNS response.
struct GNUNET_DNSSTUB_RequestSocket * GNUNET_DNSSTUB_resolve(struct GNUNET_DNSSTUB_Context *ctx, const void *request, size_t request_len, GNUNET_DNSSTUB_ResultCallback rc, void *rc_cls)
Perform DNS resolution using our default IP from init.
Definition: dnsstub.c:533
size_t udp_msg_size
Number of bytes in udp_msg.
#define GNUNET_TUN_DNS_CLASS_INTERNET
A few common DNS classes (ok, only one is common, but I list a couple more to make it clear what we&#39;r...
Request we should make.
#define GNUNET_array_append(arr, size, element)
Append an element to a list (growing the list by one).
#define GNUNET_DNSPARSER_TYPE_AAAA
struct GNUNET_DNSSTUB_RequestSocket * dns_lookup
Our DNS request handle.
Easy-to-process, parsed version of a DNS packet.
#define GNUNET_log(kind,...)
char * name
Name of the record that the query is for (0-terminated).
struct GNUNET_TUN_DnsFlags flags
Bitfield of DNS flags.
uint32_t data
The data value.
struct GNUNET_GNS_LookupWithTldRequest * lookup
Our GNS request handle.
static size_t data_size
Number of bytes in data.
struct GNUNET_DNSSTUB_Context * dns_stub
Stub resolver.
#define GNUNET_DNSPARSER_TYPE_A
char * udp_msg
Original UDP request message.
unsigned int checking_disabled
See RFC 4035.
uint16_t original_request_id
ID of the original request.
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◆ handle_request()

static void handle_request ( struct GNUNET_NETWORK_Handle lsock,
const void *  addr,
size_t  addr_len,
const char *  udp_msg,
size_t  udp_msg_size 
)
static

Handle DNS request.

Parameters
lsocksocket to use for sending the reply
addraddress to use for sending the reply
addr_lennumber of bytes in addr
udp_msgDNS request payload
udp_msg_sizenumber of bytes in udp_msg

Definition at line 402 of file gnunet-dns2gns.c.

References _, Request::addr, Request::addr_len, do_timeout(), GNUNET_DNSPARSER_Packet::flags, GNUNET_a2s(), GNUNET_DNSPARSER_free_packet(), GNUNET_DNSPARSER_parse(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_GNS_lookup_with_tld(), GNUNET_log, GNUNET_malloc, GNUNET_memcpy, GNUNET_memdup, GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), Request::lookup, Request::lsock, GNUNET_DNSPARSER_Query::name, GNUNET_DNSPARSER_Packet::num_additional_records, GNUNET_DNSPARSER_Packet::num_answers, GNUNET_DNSPARSER_Packet::num_authority_records, GNUNET_DNSPARSER_Packet::num_queries, Request::packet, GNUNET_DNSPARSER_Packet::queries, GNUNET_TUN_DnsFlags::query_or_response, request, result_processor(), TIMEOUT, Request::timeout_task, GNUNET_DNSPARSER_Query::type, Request::udp_msg, and Request::udp_msg_size.

Referenced by read_dns4(), and read_dns6().

407 {
408  struct Request *request;
409  struct GNUNET_DNSPARSER_Packet *packet;
410 
411  packet = GNUNET_DNSPARSER_parse (udp_msg,
412  udp_msg_size);
413  if (NULL == packet)
414  {
416  _("Cannot parse DNS request from %s\n"),
417  GNUNET_a2s (addr, addr_len));
418  return;
419  }
421  "Received request for `%s' with flags %u, #answers %d, #auth %d, #additional %d\n",
422  packet->queries[0].name,
423  (unsigned int) packet->flags.query_or_response,
424  (int) packet->num_answers,
425  (int) packet->num_authority_records,
426  (int) packet->num_additional_records);
427  if ( (0 != packet->flags.query_or_response) ||
428  (0 != packet->num_answers) ||
429  (0 != packet->num_authority_records))
430  {
432  _("Received malformed DNS request from %s\n"),
433  GNUNET_a2s (addr, addr_len));
435  return;
436  }
437  if ( (1 != packet->num_queries) )
438  {
440  _("Received unsupported DNS request from %s\n"),
441  GNUNET_a2s (addr,
442  addr_len));
444  return;
445  }
446  request = GNUNET_malloc (sizeof (struct Request) + addr_len);
447  request->lsock = lsock;
448  request->packet = packet;
449  request->addr = &request[1];
450  request->addr_len = addr_len;
451  GNUNET_memcpy (&request[1],
452  addr,
453  addr_len);
454  request->udp_msg_size = udp_msg_size;
455  request->udp_msg = GNUNET_memdup (udp_msg,
456  udp_msg_size);
458  &do_timeout,
459  request);
461  "Calling GNS on `%s'\n",
462  packet->queries[0].name);
464  packet->queries[0].name,
465  packet->queries[0].type,
466  GNUNET_NO,
468  request);
469 }
uint16_t type
See GNUNET_DNSPARSER_TYPE_*.
static struct GNUNET_VPN_RedirectionRequest * request
Opaque redirection request handle.
Definition: gnunet-vpn.c:41
struct GNUNET_GNS_LookupWithTldRequest * GNUNET_GNS_lookup_with_tld(struct GNUNET_GNS_Handle *handle, const char *name, uint32_t type, enum GNUNET_GNS_LocalOptions options, GNUNET_GNS_LookupResultProcessor2 proc, void *proc_cls)
Perform an asynchronous lookup operation on the GNS, determining the zone using the TLD of the given ...
Definition: gns_tld_api.c:242
void GNUNET_DNSPARSER_free_packet(struct GNUNET_DNSPARSER_Packet *p)
Free memory taken by a packet.
Definition: dnsparser.c:854
#define GNUNET_NO
Definition: gnunet_common.h:81
#define GNUNET_memdup(buf, size)
Allocate and initialize a block of memory.
unsigned int num_answers
Number of answers in the packet, should be 0 for queries.
static void result_processor(void *cls, int was_gns, uint32_t rd_count, const struct GNUNET_GNSRECORD_Data *rd)
Iterator called on obtained result for a GNS lookup.
const void * addr
Destination address to use.
#define _(String)
GNU gettext support macro.
Definition: platform.h:208
struct GNUNET_GNS_Handle * gns
Handle to GNS resolver.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1246
#define TIMEOUT
Timeout for DNS requests.
struct GNUNET_SCHEDULER_Task * timeout_task
Task run on timeout or shutdown to clean up without response.
unsigned int query_or_response
query:0, response:1
#define GNUNET_memcpy(dst, src, n)
unsigned int num_additional_records
Number of additional records in the packet, should be 0 for queries.
struct GNUNET_DNSPARSER_Packet * GNUNET_DNSPARSER_parse(const char *udp_payload, size_t udp_payload_length)
Parse a UDP payload of a DNS packet in to a nice struct for further processing and manipulation...
Definition: dnsparser.c:662
static void do_timeout(void *cls)
Task run on timeout.
const char * GNUNET_a2s(const struct sockaddr *addr, socklen_t addrlen)
Convert a "struct sockaddr*" (IPv4 or IPv6 address) to a string (for printing debug messages)...
struct GNUNET_DNSPARSER_Query * queries
Array of all queries in the packet, must contain "num_queries" entries.
struct GNUNET_DNSPARSER_Packet * packet
Initially, this is the DNS request, it will then be converted to the DNS response.
unsigned int num_authority_records
Number of authoritative answers in the packet, should be 0 for queries.
size_t udp_msg_size
Number of bytes in udp_msg.
Request we should make.
Easy-to-process, parsed version of a DNS packet.
#define GNUNET_log(kind,...)
size_t addr_len
Number of bytes in addr.
struct GNUNET_NETWORK_Handle * lsock
Socket to use for sending the reply.
char * name
Name of the record that the query is for (0-terminated).
unsigned int num_queries
Number of queries in the packet.
struct GNUNET_TUN_DnsFlags flags
Bitfield of DNS flags.
struct GNUNET_GNS_LookupWithTldRequest * lookup
Our GNS request handle.
char * udp_msg
Original UDP request message.
#define GNUNET_malloc(size)
Wrapper around malloc.
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◆ read_dns4()

static void read_dns4 ( void *  cls)
static

Task to read IPv4 DNS packets.

Parameters
clsthe 'listen_socket4'

Definition at line 478 of file gnunet-dns2gns.c.

References buf, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_WARNING, GNUNET_log_strerror, GNUNET_NETWORK_socket_recvfrom(), GNUNET_NETWORK_socket_recvfrom_amount(), GNUNET_SCHEDULER_add_read_net(), GNUNET_SCHEDULER_get_task_context(), GNUNET_SCHEDULER_REASON_READ_READY, GNUNET_TIME_UNIT_FOREVER_REL, handle_request(), GNUNET_SCHEDULER_TaskContext::reason, size, and tc.

Referenced by run().

479 {
480  struct sockaddr_in v4;
481  socklen_t addrlen;
482  ssize_t size;
483  const struct GNUNET_SCHEDULER_TaskContext *tc;
484 
485  GNUNET_assert (listen_socket4 == cls);
488  &read_dns4,
492  return; /* shutdown? */
494  if (0 > size)
495  {
496  GNUNET_break (0);
497  return; /* read error!? */
498  }
499  {
500  char buf[size + 1];
501  ssize_t sret;
502 
503  addrlen = sizeof (v4);
505  buf,
506  size + 1,
507  (struct sockaddr *) &v4,
508  &addrlen);
509  if (0 > sret)
510  {
512  "recvfrom");
513  return;
514  }
515  GNUNET_break (size == sret);
517  &v4,
518  addrlen,
519  buf,
520  size);
521  }
522 }
const struct GNUNET_SCHEDULER_TaskContext * GNUNET_SCHEDULER_get_task_context(void)
Obtain the reasoning why the current task was started.
Definition: scheduler.c:746
The reading socket is ready.
Context information passed to each scheduler task.
static void read_dns4(void *cls)
Task to read IPv4 DNS packets.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:417
static struct GNUNET_NETWORK_Handle * listen_socket4
Listen socket for IPv4.
enum GNUNET_SCHEDULER_Reason reason
Reason why the task is run now.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static void handle_request(struct GNUNET_NETWORK_Handle *lsock, const void *addr, size_t addr_len, const char *udp_msg, size_t udp_msg_size)
Handle DNS request.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
static struct GNUNET_SCHEDULER_Task * t4
Task for IPv4 socket.
static char buf[2048]
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
static unsigned int size
Size of the "table".
Definition: peer.c:67
ssize_t GNUNET_NETWORK_socket_recvfrom_amount(const struct GNUNET_NETWORK_Handle *desc)
How much data is available to be read on this descriptor?
Definition: network.c:818
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_net(struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1478
ssize_t GNUNET_NETWORK_socket_recvfrom(const struct GNUNET_NETWORK_Handle *desc, void *buffer, size_t length, struct sockaddr *src_addr, socklen_t *addrlen)
Read data from a socket (always non-blocking).
Definition: network.c:856
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◆ read_dns6()

static void read_dns6 ( void *  cls)
static

Task to read IPv6 DNS packets.

Parameters
clsthe 'listen_socket6'

Definition at line 531 of file gnunet-dns2gns.c.

References buf, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_WARNING, GNUNET_log_strerror, GNUNET_NETWORK_socket_recvfrom(), GNUNET_NETWORK_socket_recvfrom_amount(), GNUNET_SCHEDULER_add_read_net(), GNUNET_SCHEDULER_get_task_context(), GNUNET_SCHEDULER_REASON_READ_READY, GNUNET_TIME_UNIT_FOREVER_REL, handle_request(), GNUNET_SCHEDULER_TaskContext::reason, size, and tc.

Referenced by run().

532 {
533  struct sockaddr_in6 v6;
534  socklen_t addrlen;
535  ssize_t size;
536  const struct GNUNET_SCHEDULER_TaskContext *tc;
537 
538  GNUNET_assert (listen_socket6 == cls);
541  &read_dns6,
545  return; /* shutdown? */
547  if (0 > size)
548  {
549  GNUNET_break (0);
550  return; /* read error!? */
551  }
552  {
553  char buf[size];
554  ssize_t sret;
555 
556  addrlen = sizeof (v6);
558  buf,
559  size,
560  (struct sockaddr *) &v6,
561  &addrlen);
562  if (0 > sret)
563  {
565  "recvfrom");
566  return;
567  }
568  GNUNET_break (size == sret);
570  &v6,
571  addrlen,
572  buf,
573  size);
574  }
575 }
const struct GNUNET_SCHEDULER_TaskContext * GNUNET_SCHEDULER_get_task_context(void)
Obtain the reasoning why the current task was started.
Definition: scheduler.c:746
static void read_dns6(void *cls)
Task to read IPv6 DNS packets.
The reading socket is ready.
Context information passed to each scheduler task.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:417
enum GNUNET_SCHEDULER_Reason reason
Reason why the task is run now.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static void handle_request(struct GNUNET_NETWORK_Handle *lsock, const void *addr, size_t addr_len, const char *udp_msg, size_t udp_msg_size)
Handle DNS request.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
static char buf[2048]
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
static unsigned int size
Size of the "table".
Definition: peer.c:67
static struct GNUNET_NETWORK_Handle * listen_socket6
Listen socket for IPv6.
ssize_t GNUNET_NETWORK_socket_recvfrom_amount(const struct GNUNET_NETWORK_Handle *desc)
How much data is available to be read on this descriptor?
Definition: network.c:818
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_net(struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1478
ssize_t GNUNET_NETWORK_socket_recvfrom(const struct GNUNET_NETWORK_Handle *desc, void *buffer, size_t length, struct sockaddr *src_addr, socklen_t *addrlen)
Read data from a socket (always non-blocking).
Definition: network.c:856
static struct GNUNET_SCHEDULER_Task * t6
Task for IPv6 socket.
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◆ run()

static void run ( void *  cls,
char *const *  args,
const char *  cfgfile,
const struct GNUNET_CONFIGURATION_Handle c 
)
static

Main function that will be run.

Parameters
clsclosure
argsremaining command-line arguments
cfgfilename of the configuration file used (for saving, can be NULL!)
cconfiguration

Definition at line 587 of file gnunet-dns2gns.c.

References _, address, address6, dns_ip, do_shutdown(), GNUNET_assert, GNUNET_CONFIGURATION_get_value_string(), GNUNET_DNSSTUB_add_dns_ip(), GNUNET_DNSSTUB_start(), GNUNET_DNSSTUB_stop(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_GNS_connect(), GNUNET_GNS_disconnect(), GNUNET_log, GNUNET_log_strerror, GNUNET_NETWORK_socket_bind(), GNUNET_NETWORK_socket_close(), GNUNET_NETWORK_socket_create(), GNUNET_OK, GNUNET_SCHEDULER_add_read_net(), GNUNET_SCHEDULER_add_shutdown(), GNUNET_SCHEDULER_shutdown(), GNUNET_TIME_UNIT_FOREVER_REL, inet_pton(), listen_port, read_dns4(), and read_dns6().

Referenced by main().

591 {
592  char *addr_str;
593  (void) cls;
594  (void) args;
595  (void) cfgfile;
596  cfg = c;
597  if (NULL == dns_ip)
598  {
600  _("No DNS server specified!\n"));
601  return;
602  }
604  NULL);
605  if (NULL == (gns = GNUNET_GNS_connect (cfg)))
606  return;
607  GNUNET_assert (NULL != (dns_stub = GNUNET_DNSSTUB_start (128)));
608  if (GNUNET_OK !=
610  dns_ip))
611  {
614  gns = NULL;
615  return;
616  }
617 
618  /* Get address to bind to */
620  "BIND_TO",
621  &addr_str))
622  {
623  //No address specified
625  "Don't know what to bind to...\n");
626  GNUNET_free (addr_str);
628  return;
629  }
630  if (1 != inet_pton (AF_INET, addr_str, &address))
631  {
633  "Unable to parse address %s\n",
634  addr_str);
635  GNUNET_free (addr_str);
637  return;
638  }
639  GNUNET_free (addr_str);
640  /* Get address to bind to */
642  "BIND_TO6",
643  &addr_str))
644  {
645  //No address specified
647  "Don't know what to bind6 to...\n");
648  GNUNET_free (addr_str);
650  return;
651  }
652  if (1 != inet_pton (AF_INET6, addr_str, &address6))
653  {
655  "Unable to parse IPv6 address %s\n",
656  addr_str);
657  GNUNET_free (addr_str);
659  return;
660  }
661  GNUNET_free (addr_str);
662 
664  SOCK_DGRAM,
665  IPPROTO_UDP);
666  if (NULL != listen_socket4)
667  {
668  struct sockaddr_in v4;
669 
670  memset (&v4, 0, sizeof (v4));
671  v4.sin_family = AF_INET;
672  v4.sin_addr.s_addr = address;
673 #if HAVE_SOCKADDR_IN_SIN_LEN
674  v4.sin_len = sizeof (v4);
675 #endif
676  v4.sin_port = htons (listen_port);
677  if (GNUNET_OK !=
679  (struct sockaddr *) &v4,
680  sizeof (v4)))
681  {
684  listen_socket4 = NULL;
685  }
686  }
688  SOCK_DGRAM,
689  IPPROTO_UDP);
690  if (NULL != listen_socket6)
691  {
692  struct sockaddr_in6 v6;
693 
694  memset (&v6, 0, sizeof (v6));
695  v6.sin6_family = AF_INET6;
696  v6.sin6_addr = address6;
697 #if HAVE_SOCKADDR_IN_SIN_LEN
698  v6.sin6_len = sizeof (v6);
699 #endif
700  v6.sin6_port = htons (listen_port);
701  if (GNUNET_OK !=
703  (struct sockaddr *) &v6,
704  sizeof (v6)))
705  {
708  listen_socket6 = NULL;
709  }
710  }
711  if ( (NULL == listen_socket4) &&
712  (NULL == listen_socket6) )
713  {
715  gns = NULL;
717  dns_stub = NULL;
718  return;
719  }
720  if (NULL != listen_socket4)
723  &read_dns4,
725  if (NULL != listen_socket6)
728  &read_dns6,
730 }
static unsigned int listen_port
UDP Port we listen on for inbound DNS requests.
static void read_dns6(void *cls)
Task to read IPv6 DNS packets.
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:1293
static char * dns_ip
IP of DNS server.
static void read_dns4(void *cls)
Task to read IPv4 DNS packets.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
void GNUNET_DNSSTUB_stop(struct GNUNET_DNSSTUB_Context *ctx)
Cleanup DNSSTUB resolver.
Definition: dnsstub.c:731
int GNUNET_DNSSTUB_add_dns_ip(struct GNUNET_DNSSTUB_Context *ctx, const char *dns_ip)
Add nameserver for use by the DNSSTUB.
Definition: dnsstub.c:622
int GNUNET_NETWORK_socket_bind(struct GNUNET_NETWORK_Handle *desc, const struct sockaddr *address, socklen_t address_len)
Bind a socket to a particular address.
Definition: network.c:522
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
static struct GNUNET_NETWORK_Handle * listen_socket4
Listen socket for IPv4.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:524
#define _(String)
GNU gettext support macro.
Definition: platform.h:208
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
struct GNUNET_GNS_Handle * gns
Handle to GNS resolver.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration to use.
static in_addr_t address
The address to bind to.
struct GNUNET_DNSSTUB_Context * GNUNET_DNSSTUB_start(unsigned int num_sockets)
Start a DNS stub resolver.
Definition: dnsstub.c:595
static struct GNUNET_SCHEDULER_Task * t4
Task for IPv4 socket.
void GNUNET_GNS_disconnect(struct GNUNET_GNS_Handle *handle)
Shutdown connection with the GNS service.
Definition: gns_api.c:285
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
struct GNUNET_GNS_Handle * GNUNET_GNS_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
Initialize the connection with the GNS service.
Definition: gns_api.c:263
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 void do_shutdown(void *cls)
Task run on shutdown.
static int inet_pton(int af, const char *cp, struct in_addr *buf)
Convert IPv4 address from text to binary form.
#define GNUNET_log(kind,...)
static struct GNUNET_NETWORK_Handle * listen_socket6
Listen socket for IPv6.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_net(struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1478
struct GNUNET_DNSSTUB_Context * dns_stub
Stub resolver.
int GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:604
#define GNUNET_free(ptr)
Wrapper around free.
static struct GNUNET_SCHEDULER_Task * t6
Task for IPv6 socket.
static struct in6_addr address6
The IPv6 address to bind to.
struct GNUNET_NETWORK_Handle * GNUNET_NETWORK_socket_create(int domain, int type, int protocol)
Create a new socket.
Definition: network.c:1037
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◆ main()

int main ( int  argc,
char *const *  argv 
)

The main function for the dns2gns daemon.

Parameters
argcnumber of arguments from the command line
argvcommand line arguments
Returns
0 ok, 1 on error

Definition at line 741 of file gnunet-dns2gns.c.

References _, dns_ip, gettext_noop, GNUNET_free, GNUNET_GETOPT_OPTION_END, GNUNET_GETOPT_option_string(), GNUNET_GETOPT_option_uint(), GNUNET_log_setup(), GNUNET_OK, GNUNET_PROGRAM_run(), GNUNET_STRINGS_get_utf8_args(), listen_port, ret, and run().

743 {
746  "dns",
747  "IP",
748  gettext_noop ("IP of recursive DNS resolver to use (required)"),
749  &dns_ip),
751  "port",
752  "UDPPORT",
753  gettext_noop ("UDP port to listen on for inbound DNS requests; default: 2853"),
754  &listen_port),
756  };
757  int ret;
758 
759  if (GNUNET_OK !=
760  GNUNET_STRINGS_get_utf8_args (argc, argv,
761  &argc, &argv))
762  return 2;
763  GNUNET_log_setup ("gnunet-dns2gns",
764  "WARNING",
765  NULL);
766  ret =
767  (GNUNET_OK ==
768  GNUNET_PROGRAM_run (argc, argv,
769  "gnunet-dns2gns",
770  _("GNUnet DNS-to-GNS proxy (a DNS server)"),
771  options,
772  &run, NULL)) ? 0 : 1;
773  GNUNET_free ((void*) argv);
774  return ret;
775 }
static unsigned int listen_port
UDP Port we listen on for inbound DNS requests.
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
static char * dns_ip
IP of DNS server.
int GNUNET_STRINGS_get_utf8_args(int argc, char *const *argv, int *u8argc, char *const **u8argv)
Returns utf-8 encoded arguments.
Definition: strings.c:1521
static void run(void *cls, char *const *args, const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *c)
Main function that will be run.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
Definition of a command line option.
static int ret
Final status code.
Definition: gnunet-arm.c:89
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_OPTION_END
Definition: 002.c:13
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_string(char shortName, const char *name, const char *argumentHelp, const char *description, char **str)
Allow user to specify a string.
#define _(String)
GNU gettext support macro.
Definition: platform.h:208
int GNUNET_PROGRAM_run(int argc, char *const *argv, const char *binaryName, const char *binaryHelp, const struct GNUNET_GETOPT_CommandLineOption *options, GNUNET_PROGRAM_Main task, void *task_cls)
Run a standard GNUnet command startup sequence (initialize loggers and configuration, parse options).
Definition: program.c:361
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_uint(char shortName, const char *name, const char *argumentHelp, const char *description, unsigned int *val)
Allow user to specify an unsigned int.
int GNUNET_log_setup(const char *comp, const char *loglevel, const char *logfile)
Setup logging.
#define GNUNET_free(ptr)
Wrapper around free.
#define gettext_noop(String)
Definition: gettext.h:69
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Variable Documentation

◆ address

in_addr_t address
static

The address to bind to.

Definition at line 98 of file gnunet-dns2gns.c.

Referenced by run().

◆ address6

struct in6_addr address6
static

The IPv6 address to bind to.

Definition at line 103 of file gnunet-dns2gns.c.

Referenced by run().

◆ gns

struct GNUNET_GNS_Handle* gns

Handle to GNS resolver.

Definition at line 110 of file gnunet-dns2gns.c.

◆ dns_stub

struct GNUNET_DNSSTUB_Context* dns_stub

Stub resolver.

Definition at line 115 of file gnunet-dns2gns.c.

◆ listen_socket4

struct GNUNET_NETWORK_Handle* listen_socket4
static

Listen socket for IPv4.

Definition at line 120 of file gnunet-dns2gns.c.

◆ listen_socket6

struct GNUNET_NETWORK_Handle* listen_socket6
static

Listen socket for IPv6.

Definition at line 125 of file gnunet-dns2gns.c.

◆ t4

struct GNUNET_SCHEDULER_Task* t4
static

◆ t6

struct GNUNET_SCHEDULER_Task* t6
static

◆ dns_ip

char* dns_ip
static

IP of DNS server.

Definition at line 140 of file gnunet-dns2gns.c.

Referenced by main(), result_processor(), and run().

◆ listen_port

unsigned int listen_port = 53
static

UDP Port we listen on for inbound DNS requests.

Definition at line 145 of file gnunet-dns2gns.c.

Referenced by main(), and run().

◆ cfg

const struct GNUNET_CONFIGURATION_Handle* cfg
static

Configuration to use.

Definition at line 150 of file gnunet-dns2gns.c.