2 This file is part of GNUnet.
3 (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 * @file gns/gnunet-service-gns.c
23 * @brief GNUnet GNS service
24 * @author Martin Schanzenbach
27 #include "gnunet_util_lib.h"
28 #include "gnunet_transport_service.h"
29 #include "gnunet_dns_service.h"
30 #include "gnunet_gns_service.h"
31 #include "gnunet-service-gns.h"
35 * Our handle to the DNS handler library
37 struct GNUNET_DNS_Handle *dns_handler;
40 * The configuration the GNS service is running with
42 const struct GNUNET_CONFIGURATION_Handle *GDS_cfg;
45 * Task run during shutdown.
51 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
53 GNUNET_DNS_disconnect(dns_handle);
57 * The DNS request handler
60 * @param rh request handle to user for reply
61 * @param request_length number of bytes in request
62 * @param request udp payload of the DNS request
65 handle_dns_request(void *cls,
66 struct GNUNET_DNS_RequestHandle *rh,
67 size_t request_length,
71 * TODO: parse request for tld
72 * Queue rh and gns handle (or use cls)
73 * How should lookup behave:
74 * - sync and return result or "NX"
75 * - async like dht with iter
76 * Maybe provide both, useful for cli app
78 struct GNUNET_DNSPARSER_Packet *p;
79 char buf[INET6_ADDRSTRLEN];
82 p = GNUNET_DNSPARSER_parse (request, request_length);
85 fprintf (stderr, "Received malformed DNS packet, leaving it untouched\n");
86 GNUNET_DNS_request_forward (rh);
90 for (i=0;i<p->num_queries;i++)
92 namelen = strlen(&p->queries[i]->name);
95 if (0 == strcmp(&p->queries[i]->name, ".gnunet"))
97 GNUNET_DNS_request_answer(rh, 0 /*length*/, NULL/*reply*/);
101 GNUNET_DNS_request_forward (rh);
109 * Process GNS requests.
112 * @param server the initialized server
113 * @param c configuration to use
116 run (void *cls, struct GNUNET_SERVER_Handle *server,
117 const struct GNUNET_CONFIGURATION_Handle *c)
119 /* The IPC message types */
120 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
121 /* callback, cls, type, size */
122 {&handle_record_lookup, NULL, GNUNET_MESSAGE_TYPE_GNS_RECORD_LOOKUP,
123 sizeof (struct GNUNET_GNS_Lookup)},
124 {&handle_record_add, NULL, GNUNET_MESSAGE_TYPE_GNS_RECORD_ADD,
125 sizeof (struct GNUNET_GNS_Record)},
129 nc = GNUNET_SERVER_notification_context_create (server, 1);
131 /* TODO do some config parsing */
133 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
136 * Do gnunet dns init here
138 dns_handle = GNUNET_DNS_connect(c,
139 GNUNET_DNS_FLAG_PRE_RESOLUTION,
140 &handle_dns_request, /* rh */
142 GNUNET_SERVER_add_handlers (server, handlers);
144 * Esp the lookup would require to keep track of the clients' context
146 * GNUNET_SERVER_disconnect_notify (server, &client_disconnect, NULL);
152 * The main function for the GNS service.
154 * @param argc number of arguments from the command line
155 * @param argv command line arguments
156 * @return 0 ok, 1 on error
159 main (int argc, char *const *argv)
165 GNUNET_SERVICE_run (argc, argv, "gns", GNUNET_SERVICE_OPTION_NONE, &run,
170 /* end of gnunet-service-gns.c */