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.
10 GNUnet is distributed in the hope that it will be useful, but
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,
18 Boston, MA 02111-1307, USA.
22 * @file dht/gnunet-service-dht.c
23 * @brief GNUnet DHT service
24 * @author Christian Grothoff
25 * @author Nathan Evans
28 #include "gnunet_block_lib.h"
29 #include "gnunet_util_lib.h"
30 #include "gnunet_transport_service.h"
31 #include "gnunet_hello_lib.h"
32 #include "gnunet_dht_service.h"
33 #include "gnunet_statistics_service.h"
34 #include "gnunet-service-dht.h"
35 #include "gnunet-service-dht_clients.h"
36 #include "gnunet-service-dht_datacache.h"
37 #include "gnunet-service-dht_hello.h"
38 #include "gnunet-service-dht_neighbours.h"
39 #include "gnunet-service-dht_nse.h"
40 #include "gnunet-service-dht_routing.h"
45 * Handle for the statistics service.
47 struct GNUNET_STATISTICS_Handle *GDS_stats;
50 * Our handle to the BLOCK library.
52 struct GNUNET_BLOCK_Context *GDS_block_context;
55 * The configuration the DHT service is running with
57 const struct GNUNET_CONFIGURATION_Handle *GDS_cfg;
62 struct GNUNET_MessageHeader *GDS_my_hello;
65 * Handle to the transport service, for getting our hello
67 struct GNUNET_TRANSPORT_Handle *GDS_transport_handle;
72 * Handle to get our current HELLO.
74 static struct GNUNET_TRANSPORT_GetHelloHandle *ghh;
78 * Receive the HELLO from transport service, free current and replace
82 * @param message HELLO message of peer
85 process_hello (void *cls,
86 const struct GNUNET_MessageHeader *message)
88 GNUNET_assert (message != NULL);
89 GNUNET_free_non_null (GDS_my_hello);
90 GDS_my_hello = GNUNET_malloc (ntohs (message->size));
91 memcpy (GDS_my_hello, message, ntohs (message->size));
96 * Task run during shutdown.
102 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
106 GNUNET_TRANSPORT_get_hello_cancel (ghh);
109 if (GDS_transport_handle != NULL)
111 GNUNET_TRANSPORT_disconnect (GDS_transport_handle);
112 GDS_transport_handle = NULL;
114 GDS_NEIGHBOURS_done ();
115 GDS_DATACACHE_done ();
119 if (GDS_block_context != NULL)
121 GNUNET_BLOCK_context_destroy (GDS_block_context);
122 GDS_block_context = NULL;
124 if (GDS_stats != NULL)
126 GNUNET_STATISTICS_destroy (GDS_stats, GNUNET_YES);
129 GNUNET_free_non_null (GDS_my_hello);
135 * Process dht requests.
138 * @param server the initialized server
139 * @param c configuration to use
142 run (void *cls, struct GNUNET_SERVER_Handle *server,
143 const struct GNUNET_CONFIGURATION_Handle *c)
146 GDS_block_context = GNUNET_BLOCK_context_create (GDS_cfg);
147 GDS_stats = GNUNET_STATISTICS_create ("dht", GDS_cfg);
150 GDS_DATACACHE_init ();
152 GDS_CLIENTS_init (server);
154 GDS_NEIGHBOURS_init ())
156 shutdown_task (NULL, NULL);
159 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
160 &shutdown_task, NULL);
161 GDS_transport_handle =
162 GNUNET_TRANSPORT_connect (GDS_cfg, NULL, NULL, NULL, NULL, NULL);
163 if (GDS_transport_handle == NULL)
165 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
166 _("Failed to connect to transport service!\n"));
169 ghh = GNUNET_TRANSPORT_get_hello (GDS_transport_handle,
170 &process_hello, NULL);
175 * The main function for the dht service.
177 * @param argc number of arguments from the command line
178 * @param argv command line arguments
179 * @return 0 ok, 1 on error
182 main (int argc, char *const *argv)
187 GNUNET_SERVICE_run (argc, argv,
189 GNUNET_SERVICE_OPTION_NONE,
190 &run, NULL)) ? 0 : 1;
195 /* end of gnunet-service-dht.c */