1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
This file is part of GNUnet.
Copyright (C) 2009, 2010, 2011, 2016 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @file dht/gnunet-service-dht.c
* @brief GNUnet DHT service
* @author Christian Grothoff
* @author Nathan Evans
*/
#include "platform.h"
#include "gnunet_block_lib.h"
#include "gnunet_util_lib.h"
#include "gnunet_transport_service.h"
#include "gnunet_transport_hello_service.h"
#include "gnunet_hello_lib.h"
#include "gnunet_dht_service.h"
#include "gnunet_statistics_service.h"
#include "gnunet-service-dht.h"
#include "gnunet-service-dht_datacache.h"
#include "gnunet-service-dht_hello.h"
#include "gnunet-service-dht_neighbours.h"
#include "gnunet-service-dht_nse.h"
#include "gnunet-service-dht_routing.h"
/**
* Our HELLO
*/
struct GNUNET_MessageHeader *GDS_my_hello;
/**
* Handle to get our current HELLO.
*/
static struct GNUNET_TRANSPORT_HelloGetHandle *ghh;
/**
* Hello address expiration
*/
struct GNUNET_TIME_Relative hello_expiration;
#include "gnunet-service-dht_clients.c"
/**
* Receive the HELLO from transport service, free current and replace
* if necessary.
*
* @param cls NULL
* @param message HELLO message of peer
*/
static void
process_hello (void *cls,
const struct GNUNET_MessageHeader *message)
{
GNUNET_free_non_null (GDS_my_hello);
GDS_my_hello = GNUNET_malloc (ntohs (message->size));
GNUNET_memcpy (GDS_my_hello,
message,
ntohs (message->size));
}
/**
* Task run during shutdown.
*
* @param cls unused
*/
static void
shutdown_task (void *cls)
{
if (NULL != ghh)
{
GNUNET_TRANSPORT_hello_get_cancel (ghh);
ghh = NULL;
}
GDS_NEIGHBOURS_done ();
GDS_DATACACHE_done ();
GDS_ROUTING_done ();
GDS_HELLO_done ();
GDS_NSE_done ();
if (NULL != GDS_block_context)
{
GNUNET_BLOCK_context_destroy (GDS_block_context);
GDS_block_context = NULL;
}
if (NULL != GDS_stats)
{
GNUNET_STATISTICS_destroy (GDS_stats,
GNUNET_YES);
GDS_stats = NULL;
}
GNUNET_free_non_null (GDS_my_hello);
GDS_my_hello = NULL;
GDS_CLIENTS_stop ();
}
/**
* Process dht requests.
*
* @param cls closure
* @param c configuration to use
* @param service the initialized service
*/
static void
run (void *cls,
const struct GNUNET_CONFIGURATION_Handle *c,
struct GNUNET_SERVICE_Handle *service)
{
GDS_cfg = c;
GDS_service = service;
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_time (c,
"transport",
"HELLO_EXPIRATION",
&hello_expiration))
{
hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
}
GDS_block_context = GNUNET_BLOCK_context_create (GDS_cfg);
GDS_stats = GNUNET_STATISTICS_create ("dht",
GDS_cfg);
GNUNET_SERVICE_suspend (GDS_service);
GDS_CLIENTS_init ();
GDS_ROUTING_init ();
GDS_NSE_init ();
GDS_DATACACHE_init ();
GDS_HELLO_init ();
if (GNUNET_OK != GDS_NEIGHBOURS_init ())
{
shutdown_task (NULL);
return;
}
GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
NULL);
ghh = GNUNET_TRANSPORT_hello_get (GDS_cfg,
GNUNET_TRANSPORT_AC_GLOBAL,
&process_hello,
NULL);
}
/* Finally, define the main method */
GDS_DHT_SERVICE_INIT("dht", &run);
/* end of gnunet-service-dht.c */
|
