5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2002 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
24 /* Forward declaration of backup server context */
25 typedef struct SilcServerBackupStruct *SilcServerBackup;
27 /* Callback function that is called after the key exchange and connection
28 authentication protocols has been completed with a remote router. The
29 `server_entry' is the remote router entry or NULL on error. */
30 typedef void (*SilcServerConnectRouterCallback)(SilcServer server,
31 SilcServerEntry server_entry,
34 /* Connection structure used when connection to remote */
36 SilcSocketConnection sock;
38 /* Remote host name and port */
42 char *backup_replace_ip;
43 int backup_replace_port;
46 /* Connection configuration (maybe NULL) */
47 SilcServerConfigRef conn;
49 /* Current connection retry info */
50 SilcUInt32 retry_count;
51 SilcUInt32 retry_timeout;
53 /* Back pointer to server */
56 SilcServerConnectRouterCallback callback;
57 void *callback_context;
58 } *SilcServerConnection;
60 /* General definitions */
63 #define SILC_PORT 706;
65 /* Server and router. Used internally by the code. */
68 #define SILC_BACKUP_ROUTER 2
70 /* Default parameter values */
72 /* Connection retry timeout. We implement exponential backoff algorithm
73 in connection retry. The interval of timeout grows when retry count
75 #define SILC_SERVER_RETRY_COUNT 7 /* Max retry count */
76 #define SILC_SERVER_RETRY_MULTIPLIER 2 /* Interval growth */
77 #define SILC_SERVER_RETRY_RANDOMIZER 2 /* timeout += rnd % 2 */
78 #define SILC_SERVER_RETRY_INTERVAL_MIN 10 /* Min retry timeout */
79 #define SILC_SERVER_RETRY_INTERVAL_MAX 600 /* Max generated timeout */
81 #define SILC_SERVER_KEEPALIVE 300 /* Heartbeat interval */
82 #define SILC_SERVER_CHANNEL_REKEY 3600 /* Channel rekey interval */
83 #define SILC_SERVER_REKEY 3600 /* Session rekey interval */
84 #define SILC_SERVER_SKE_TIMEOUT 60 /* SKE timeout */
85 #define SILC_SERVER_CONNAUTH_TIMEOUT 60 /* CONN_AUTH timeout */
86 #define SILC_SERVER_MAX_CONNECTIONS 1000 /* Max connections */
87 #define SILC_SERVER_MAX_CONNECTIONS_SINGLE 1000 /* Max connections per host */
88 #define SILC_SERVER_LOG_FLUSH_DELAY 300 /* Default log flush delay */
92 /* This macro is used to send notify messages with formatted string. The
93 string is formatted with arguments and the formatted string is sent as
95 #define SILC_SERVER_SEND_NOTIFY(server, sock, type, fmt) \
97 char *__fmt__ = silc_format fmt; \
98 silc_server_send_notify(server, sock, FALSE, \
99 type, 1, __fmt__, strlen(__fmt__)); \
100 silc_free(__fmt__); \
103 /* Send notify to operators */
104 #define SILC_SERVER_SEND_OPERS(server, route, local, type, fmt) \
106 char *__fmt__ = silc_format fmt; \
107 silc_server_send_opers_notify(server, route, local, \
108 type, 1, __fmt__, strlen(__fmt__)); \
109 silc_free(__fmt__); \
112 /* Check whether rekey protocol is active */
113 #define SILC_SERVER_IS_REKEY(sock) \
114 (sock->protocol && sock->protocol->protocol && \
115 sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY)
117 /* Output an error message wether to stderr or LOG_ERROR if we are in the
119 #define SILC_SERVER_LOG_ERROR(fmt) silc_server_stderr(silc_format fmt)
122 int silc_server_alloc(SilcServer *new_server);
123 void silc_server_free(SilcServer server);
124 bool silc_server_init(SilcServer server);
125 bool silc_server_rehash(SilcServer server);
126 void silc_server_run(SilcServer server);
127 void silc_server_stop(SilcServer server);
128 void silc_server_start_key_exchange(SilcServer server,
129 SilcServerConnection sconn,
131 bool silc_server_packet_parse(SilcPacketParserContext *parser_context,
133 void silc_server_packet_parse_type(SilcServer server,
134 SilcSocketConnection sock,
135 SilcPacketContext *packet);
136 void silc_server_create_connection(SilcServer server,
137 const char *remote_host, SilcUInt32 port);
138 void silc_server_close_connection(SilcServer server,
139 SilcSocketConnection sock);
140 void silc_server_free_client_data(SilcServer server,
141 SilcSocketConnection sock,
142 SilcClientEntry client,
144 const char *signoff);
145 void silc_server_free_sock_user_data(SilcServer server,
146 SilcSocketConnection sock,
147 const char *signoff_message);
148 void silc_server_remove_from_channels(SilcServer server,
149 SilcSocketConnection sock,
150 SilcClientEntry client,
152 const char *signoff_message,
154 bool silc_server_remove_from_one_channel(SilcServer server,
155 SilcSocketConnection sock,
156 SilcChannelEntry channel,
157 SilcClientEntry client,
159 void silc_server_disconnect_remote(SilcServer server,
160 SilcSocketConnection sock,
161 SilcStatus status, ...);
162 SilcChannelEntry silc_server_create_new_channel(SilcServer server,
163 SilcServerID *router_id,
169 silc_server_create_new_channel_with_id(SilcServer server,
173 SilcChannelID *channel_id,
175 bool silc_server_create_channel_key(SilcServer server,
176 SilcChannelEntry channel,
178 SilcChannelEntry silc_server_save_channel_key(SilcServer server,
179 SilcBuffer key_payload,
180 SilcChannelEntry channel);
181 void silc_server_perform_heartbeat(SilcSocketConnection sock,
183 void silc_server_announce_get_channel_topic(SilcServer server,
184 SilcChannelEntry channel,
186 void silc_server_announce_get_channel_users(SilcServer server,
187 SilcChannelEntry channel,
188 SilcBuffer *channel_modes,
189 SilcBuffer *channel_users,
190 SilcBuffer *channel_users_modes);
191 void silc_server_announce_get_channels(SilcServer server,
193 SilcBuffer *channels,
194 SilcBuffer **channel_modes,
195 SilcBuffer *channel_users,
196 SilcBuffer **channel_users_modes,
197 SilcUInt32 *channel_users_modes_c,
198 SilcBuffer **channel_topics,
199 SilcChannelID ***channel_ids,
200 unsigned long creation_time);
201 void silc_server_announce_servers(SilcServer server, bool global,
202 unsigned long creation_time,
203 SilcSocketConnection remote);
204 void silc_server_announce_clients(SilcServer server,
205 unsigned long creation_time,
206 SilcSocketConnection remote);
207 void silc_server_announce_channels(SilcServer server,
208 unsigned long creation_time,
209 SilcSocketConnection remote);
210 bool silc_server_get_users_on_channel(SilcServer server,
211 SilcChannelEntry channel,
212 SilcBuffer *user_list,
213 SilcBuffer *mode_list,
214 SilcUInt32 *user_count);
215 void silc_server_save_users_on_channel(SilcServer server,
216 SilcSocketConnection sock,
217 SilcChannelEntry channel,
219 SilcBuffer user_list,
220 SilcBuffer mode_list,
221 SilcUInt32 user_count);
222 void silc_server_save_user_channels(SilcServer server,
223 SilcSocketConnection sock,
224 SilcClientEntry client,
226 SilcBuffer channels_user_modes);
228 silc_server_get_client_route(SilcServer server,
229 unsigned char *id_data,
231 SilcClientID *client_id,
232 SilcIDListData *idata,
233 SilcClientEntry *client_entry);
234 SilcBuffer silc_server_get_client_channel_list(SilcServer server,
235 SilcClientEntry client,
238 SilcBuffer *user_mode_list);
239 SilcClientEntry silc_server_get_client_resolve(SilcServer server,
240 SilcClientID *client_id,
243 void silc_server_stderr(char *message);