5 Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
7 Copyright (C) 1997 - 2001 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 for SILC Server object. The actual object is
25 defined in internal header file for server routines. I want to keep
26 the object private hence this declaration. */
27 typedef struct SilcServerStruct *SilcServer;
29 /* Forward declaration of backup server context */
30 typedef struct SilcServerBackupStruct *SilcServerBackup;
32 #define SILC_SERVER_MAX_CONNECTIONS 1000
34 /* General definitions */
37 #define SILC_PORT 768;
39 /* Server and router. Used internally by the code. */
42 #define SILC_BACKUP_ROUTER 2
44 /* Connection retry timeout. We implement exponential backoff algorithm
45 in connection retry. The interval of timeout grows when retry count
47 #define SILC_SERVER_RETRY_COUNT 7 /* Max retry count */
48 #define SILC_SERVER_RETRY_MULTIPLIER 2 /* Interval growth */
49 #define SILC_SERVER_RETRY_RANDOMIZER 2 /* timeout += rnd % 2 */
50 #define SILC_SERVER_RETRY_INTERVAL_MIN 10 /* Min retry timeout */
51 #define SILC_SERVER_RETRY_INTERVAL_MAX 600 /* Max generated timeout */
56 Structure to hold various default parameters for server that can be
57 given before running the server.
62 uint32 retry_interval_min;
63 uint32 retry_interval_min_usec;
64 uint32 retry_interval_max;
65 char retry_keep_trying;
67 uint32 protocol_timeout;
68 uint32 protocol_timeout_usec;
70 char require_reverse_mapping;
73 /* Callback function that is called after the key exchange and connection
74 authentication protocols has been completed with a remote router. The
75 `server_entry' is the remote router entry. */
76 typedef void (*SilcServerConnectRouterCallback)(SilcServer server,
77 SilcServerEntry server_entry,
81 SilcSocketConnection sock;
83 /* Remote host name and port */
87 char *backup_replace_ip;
88 int backup_replace_port;
91 /* Current connection retry info */
95 /* Back pointer to server */
98 SilcServerConnectRouterCallback callback;
99 void *callback_context;
100 } *SilcServerConnection;
104 /* This macro is used to send notify messages with formatted string. The
105 string is formatted with arguments and the formatted string is sent as
107 #define SILC_SERVER_SEND_NOTIFY(server, sock, type, fmt) \
109 char *__fmt__ = silc_format fmt; \
110 silc_server_send_notify(server, sock, FALSE, \
111 type, 1, __fmt__, strlen(__fmt__)); \
112 silc_free(__fmt__); \
115 /* Check whether rekey protocol is active */
116 #define SILC_SERVER_IS_REKEY(sock) \
117 (sock->protocol && sock->protocol->protocol && \
118 sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY)
121 int silc_server_alloc(SilcServer *new_server);
122 void silc_server_free(SilcServer server);
123 int silc_server_init(SilcServer server);
124 void silc_server_daemonise(SilcServer server);
125 void silc_server_drop(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, uint32 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 char *signoff_message,
154 int 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 const char *fmt, ...);
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_users,
189 SilcBuffer *channel_users_modes);
190 void silc_server_announce_get_channels(SilcServer server,
192 SilcBuffer *channels,
193 SilcBuffer *channel_users,
194 SilcBuffer **channel_users_modes,
195 uint32 *channel_users_modes_c,
196 SilcBuffer **channel_topics,
197 SilcChannelID ***channel_ids,
198 unsigned long creation_time);
199 void silc_server_announce_servers(SilcServer server, bool global,
200 unsigned long creation_time,
201 SilcSocketConnection remote);
202 void silc_server_announce_clients(SilcServer server,
203 unsigned long creation_time,
204 SilcSocketConnection remote);
205 void silc_server_announce_channels(SilcServer server,
206 unsigned long creation_time,
207 SilcSocketConnection remote);
208 void silc_server_get_users_on_channel(SilcServer server,
209 SilcChannelEntry channel,
210 SilcBuffer *user_list,
211 SilcBuffer *mode_list,
213 void silc_server_save_users_on_channel(SilcServer server,
214 SilcSocketConnection sock,
215 SilcChannelEntry channel,
217 SilcBuffer user_list,
218 SilcBuffer mode_list,
220 SilcSocketConnection silc_server_get_client_route(SilcServer server,
221 unsigned char *id_data,
223 SilcClientID *client_id,
224 SilcIDListData *idata);
225 SilcBuffer silc_server_get_client_channel_list(SilcServer server,
226 SilcClientEntry client);
227 SilcClientEntry silc_server_get_client_resolve(SilcServer server,
228 SilcClientID *client_id,