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;
71 * Handle to get our current HELLO.
73 static struct GNUNET_TRANSPORT_GetHelloHandle *ghh;
77 * Receive the HELLO from transport service, free current and replace
81 * @param message HELLO message of peer
84 process_hello (void *cls, const struct GNUNET_MessageHeader *message)
86 GNUNET_assert (message != NULL);
87 GNUNET_free_non_null (GDS_my_hello);
88 GDS_my_hello = GNUNET_malloc (ntohs (message->size));
89 memcpy (GDS_my_hello, message, ntohs (message->size));
94 * Task run during shutdown.
100 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
104 GNUNET_TRANSPORT_get_hello_cancel (ghh);
107 if (GDS_transport_handle != NULL)
109 GNUNET_TRANSPORT_disconnect (GDS_transport_handle);
110 GDS_transport_handle = NULL;
112 GDS_NEIGHBOURS_done ();
113 GDS_DATACACHE_done ();
117 if (GDS_block_context != NULL)
119 GNUNET_BLOCK_context_destroy (GDS_block_context);
120 GDS_block_context = NULL;
122 if (GDS_stats != NULL)
124 GNUNET_STATISTICS_destroy (GDS_stats, GNUNET_YES);
127 GNUNET_free_non_null (GDS_my_hello);
133 * Process dht requests.
136 * @param server the initialized server
137 * @param c configuration to use
140 run (void *cls, struct GNUNET_SERVER_Handle *server,
141 const struct GNUNET_CONFIGURATION_Handle *c)
144 GDS_block_context = GNUNET_BLOCK_context_create (GDS_cfg);
145 GDS_stats = GNUNET_STATISTICS_create ("dht", GDS_cfg);
148 GDS_DATACACHE_init ();
150 GDS_CLIENTS_init (server);
151 if (GNUNET_OK != GDS_NEIGHBOURS_init ())
153 shutdown_task (NULL, NULL);
156 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
158 GDS_transport_handle =
159 GNUNET_TRANSPORT_connect (GDS_cfg, NULL, NULL, NULL, NULL, NULL);
160 if (GDS_transport_handle == NULL)
162 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
163 _("Failed to connect to transport service!\n"));
166 ghh = GNUNET_TRANSPORT_get_hello (GDS_transport_handle, &process_hello, NULL);
171 * The main function for the dht service.
173 * @param argc number of arguments from the command line
174 * @param argv command line arguments
175 * @return 0 ok, 1 on error
178 main (int argc, char *const *argv)
184 GNUNET_SERVICE_run (argc, argv, "dht", GNUNET_SERVICE_OPTION_NONE, &run,
190 /* end of gnunet-service-dht.c */