5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2003 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.
21 #ifndef SERVER_INTERNAL_H
22 #define SERVER_INTERNAL_H
24 /* Server statistics structure. This holds various statistics about
27 /* Local stats (server and router) */
28 SilcUInt32 my_clients; /* Locally connected clients */
29 SilcUInt32 my_servers; /* Locally connected servers */
30 SilcUInt32 my_routers; /* Locally connected routers */
31 SilcUInt32 my_channels; /* Locally created channels */
32 SilcUInt32 my_chanclients; /* Local clients on local channels */
33 SilcUInt32 my_aways; /* Local clients away (gone) */
34 SilcUInt32 my_detached; /* Local clients detached */
35 SilcUInt32 my_server_ops; /* Local server operators */
36 SilcUInt32 my_router_ops; /* Local router operators */
38 /* Global stats (mainly for router) */
39 SilcUInt32 cell_clients; /* All clients in cell */
40 SilcUInt32 cell_servers; /* All servers in cell */
41 SilcUInt32 cell_channels; /* All channels in cell */
42 SilcUInt32 cell_chanclients; /* All clients on cell's channels */
43 SilcUInt32 clients; /* All clients */
44 SilcUInt32 servers; /* All servers */
45 SilcUInt32 routers; /* All routers */
46 SilcUInt32 channels; /* All channels */
47 SilcUInt32 chanclients; /* All clients on channels */
48 SilcUInt32 aways; /* All clients away (gone) */
49 SilcUInt32 detached; /* All clients detached */
50 SilcUInt32 server_ops; /* All server operators */
51 SilcUInt32 router_ops; /* All router operators */
53 SilcUInt32 secret_channels;
54 SilcUInt32 private_channels;
58 SilcUInt32 conn_attempts; /* Connection attempts */
59 SilcUInt32 conn_failures; /* Connection failure */
60 SilcUInt32 auth_attempts; /* Authentication attempts */
61 SilcUInt32 auth_failures; /* Authentication failures */
62 SilcUInt32 packets_sent; /* Sent SILC packets */
63 SilcUInt32 packets_received; /* Received SILC packets */
64 } SilcServerStatistics;
70 struct SilcServerStruct {
73 SilcServerEntry id_entry;
75 unsigned char *id_string;
76 SilcUInt32 id_string_len;
79 unsigned int server_type : 2; /* Server type (server.h) */
80 unsigned int standalone : 1; /* Set if server is standalone, and
81 does not have connection to network. */
82 unsigned int listenning : 1; /* Set if server is listenning for
83 incoming connections. */
84 unsigned int background : 1; /* Set when server is on background */
85 unsigned int backup_router : 1; /* Set if this is backup router */
86 unsigned int backup_primary : 1; /* Set if we've switched our primary
87 router to a backup router. */
88 unsigned int backup_noswitch: 1; /* Set if we've won't switch to
89 become primary (we are backup) */
90 unsigned int backup_closed : 1; /* Set if backup closed connection.
91 Do not allow resuming in this case. */
92 unsigned int wait_backup : 1; /* Set if we are waiting for backup
93 router to connect to us. */
94 unsigned int server_shutdown: 1; /* Set when shutting down */
95 unsigned int no_reconnect : 1; /* If set, server won't reconnect to
96 router after disconnection. */
98 SilcServerEntry router; /* Pointer to the primary router */
99 unsigned long router_connect; /* Time when router was connected */
100 SilcServerConnection router_conn; /* non-NULL when connecting to the
101 primary router, and NULL otherwise. */
102 SilcServerBackup backup; /* Backup routers */
104 /* Current command identifier, 0 not used */
105 SilcUInt16 cmd_ident;
107 /* SILC server scheduler */
108 SilcSchedule schedule;
111 SilcIDList local_list;
112 SilcIDList global_list;
113 SilcHashTable watcher_list;
115 /* Table of connected sockets */
116 SilcSocketConnection *sockets;
118 /* Server public key */
120 SilcPublicKey public_key;
121 SilcPrivateKey private_key;
123 /* Hash objects for general hashing */
127 /* Configuration object */
128 SilcServerConfig config;
129 SilcServerConfigRef config_ref;
135 /* Server statistics */
136 SilcServerStatistics stat;
138 /* Pending command queue */
139 SilcDList pending_commands;
141 /* Purge context for disconnected clients */
142 SilcIDListPurge purge_i;
143 SilcIDListPurge purge_g;
146 /* SIM (SILC Module) list */
151 /* Failure context. This is allocated when failure packet is received.
152 Failure packets are processed with timeout and data is saved in this
155 SilcSocketConnection sock;
157 } *SilcServerFailureContext;
159 /* Rekey must be performed at the lastest when this many packets is sent */
160 #define SILC_SERVER_REKEY_THRESHOLD 0xfffffe00
164 /* Return pointer to the primary router connection */
165 #define SILC_PRIMARY_ROUTE(server) \
166 (!server->standalone && server->router ? server->router->connection : NULL)
168 /* Return TRUE if a packet must be broadcasted (router broadcasts) */
169 #define SILC_BROADCAST(server) (server->server_type == SILC_ROUTER)
171 /* Return TRUE if entry is locally connected or local to us */
172 #define SILC_IS_LOCAL(entry) \
173 (((SilcIDListData)entry)->status & SILC_IDLIST_STATUS_LOCAL)
175 /* Registers generic task for file descriptor for reading from network and
176 writing to network. As being generic task the actual task is allocated
177 only once and after that the same task applies to all registered fd's. */
178 #define SILC_REGISTER_CONNECTION_FOR_IO(fd) \
180 silc_schedule_task_add(server->schedule, (fd), \
181 silc_server_packet_process, \
184 SILC_TASK_PRI_NORMAL); \
187 #define SILC_SET_CONNECTION_FOR_INPUT(s, fd) \
189 silc_schedule_set_listen_fd((s), (fd), SILC_TASK_READ, FALSE); \
192 #define SILC_SET_CONNECTION_FOR_OUTPUT(s, fd) \
194 silc_schedule_set_listen_fd((s), (fd), (SILC_TASK_READ | SILC_TASK_WRITE), \
198 #define SILC_OPER_STATS_UPDATE(c, type, mod) \
200 if ((c)->mode & (mod)) { \
201 if (SILC_IS_LOCAL((c))) \
202 server->stat.my_ ## type ## _ops--; \
203 if (server->server_type == SILC_ROUTER) \
204 server->stat. type ## _ops--; \
205 (c)->mode &= ~(mod); \
209 #define SILC_UMODE_STATS_UPDATE(oper, mod) \
211 if (client->mode & (mod)) { \
212 if (!(mode & (mod))) { \
213 if (SILC_IS_LOCAL(client)) \
214 server->stat.my_ ## oper ## _ops--; \
215 if (server->server_type == SILC_ROUTER) \
216 server->stat. oper ## _ops--; \
219 if (mode & (mod)) { \
220 if (SILC_IS_LOCAL(client)) \
221 server->stat.my_ ## oper ## _ops++; \
222 if (server->server_type == SILC_ROUTER) \
223 server->stat. oper ## _ops++; \
228 #define SILC_GET_SKE_FLAGS(x, p) \
230 if ((x)->param && (x)->param->key_exchange_pfs) \
231 (p)->flags |= SILC_SKE_SP_FLAG_PFS; \
232 if (!(x)->publickeys) \
233 (p)->flags |= SILC_SKE_SP_FLAG_MUTUAL; \
237 SILC_TASK_CALLBACK_GLOBAL(silc_server_rekey_final);
238 SILC_TASK_CALLBACK_GLOBAL(silc_server_rekey_callback);
239 SILC_TASK_CALLBACK_GLOBAL(silc_server_connect_to_router);
240 void silc_server_watcher_list_destroy(void *key, void *context,