5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2005 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; version 2 of the License.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
20 #ifndef SERVER_INTERNAL_H
21 #define SERVER_INTERNAL_H
23 /* Server statistics structure. This holds various statistics about
26 /* Local stats (server and router) */
27 SilcUInt32 my_clients; /* Locally connected clients */
28 SilcUInt32 my_servers; /* Locally connected servers */
29 SilcUInt32 my_routers; /* Locally connected routers */
30 SilcUInt32 my_channels; /* Locally created channels */
31 SilcUInt32 my_chanclients; /* Local clients on local channels */
32 SilcUInt32 my_aways; /* Local clients away (gone) */
33 SilcUInt32 my_detached; /* Local clients detached */
34 SilcUInt32 my_server_ops; /* Local server operators */
35 SilcUInt32 my_router_ops; /* Local router operators */
37 /* Global stats (mainly for router) */
38 SilcUInt32 cell_clients; /* All clients in cell */
39 SilcUInt32 cell_servers; /* All servers in cell */
40 SilcUInt32 cell_channels; /* All channels in cell */
41 SilcUInt32 cell_chanclients; /* All clients on cell's channels */
42 SilcUInt32 clients; /* All clients */
43 SilcUInt32 servers; /* All servers */
44 SilcUInt32 routers; /* All routers */
45 SilcUInt32 channels; /* All channels */
46 SilcUInt32 chanclients; /* All clients on channels */
47 SilcUInt32 aways; /* All clients away (gone) */
48 SilcUInt32 detached; /* All clients detached */
49 SilcUInt32 server_ops; /* All server operators */
50 SilcUInt32 router_ops; /* All router operators */
52 SilcUInt32 secret_channels;
53 SilcUInt32 private_channels;
57 SilcUInt32 conn_attempts; /* Connection attempts */
58 SilcUInt32 conn_failures; /* Connection failure */
59 SilcUInt32 auth_attempts; /* Authentication attempts */
60 SilcUInt32 auth_failures; /* Authentication failures */
61 SilcUInt32 packets_sent; /* Sent SILC packets */
62 SilcUInt32 packets_received; /* Received SILC packets */
63 SilcUInt32 conn_num; /* Number of connections */
64 SilcUInt32 commands_sent; /* Commands/replies sent */
65 SilcUInt32 commands_received; /* Commands/replies received */
66 } SilcServerStatistics;
72 struct SilcServerStruct {
74 SilcServerEntry id_entry;
76 unsigned char *id_string;
77 SilcUInt32 id_string_len;
80 unsigned int server_type : 2; /* Server type (server.h) */
81 unsigned int standalone : 1; /* Set if server is standalone, and
82 does not have connection to network. */
83 unsigned int listenning : 1; /* Set if server is listenning for
84 incoming connections. */
85 unsigned int background : 1; /* Set when server is on background */
86 unsigned int backup_router : 1; /* Set if this is backup router */
87 unsigned int backup_primary : 1; /* Set if we've switched our primary
88 router to a backup router. */
89 unsigned int backup_noswitch: 1; /* Set if we've won't switch to
90 become primary (we are backup) */
91 unsigned int backup_closed : 1; /* Set if backup closed connection.
92 Do not allow resuming in this case. */
93 unsigned int wait_backup : 1; /* Set if we are waiting for backup
94 router to connect to us. */
95 unsigned int server_shutdown: 1; /* Set when shutting down */
96 unsigned int no_reconnect : 1; /* If set, server won't reconnect to
97 router after disconnection. */
98 unsigned int no_conf : 1; /* Set when connecting without
101 SilcServerEntry router; /* Pointer to the primary router */
102 unsigned long router_connect; /* Time when router was connected */
103 SilcServerConnection router_conn; /* non-NULL when connecting to the
104 primary router, and NULL otherwise. */
105 SilcServerBackup backup; /* Backup routers */
107 /* Current command identifier, 0 not used */
108 SilcUInt16 cmd_ident;
110 /* SILC server scheduler */
111 SilcSchedule schedule;
114 SilcIDList local_list;
115 SilcIDList global_list;
116 SilcHashTable watcher_list;
117 SilcHashTable watcher_list_pk;
119 SilcDList listeners; /* TCP listeners */
120 SilcPacketEngine packet_engine; /* Packet engine */
124 /* Table of connected sockets */
125 SilcPacketStream *sockets;
127 /* Server public key */
128 SilcPublicKey public_key;
129 SilcPrivateKey private_key;
131 /* Hash objects for general hashing */
135 /* Configuration object */
136 SilcServerConfig config;
137 SilcServerConfigRef config_ref;
143 /* Server statistics */
144 SilcServerStatistics stat;
146 /* Pending command queue */
147 SilcDList pending_commands;
149 /* Purge context for disconnected clients */
150 SilcIDListPurge purge_i;
151 SilcIDListPurge purge_g;
153 /* Hash table for public keys of all clients */
154 SilcHashTable pk_hash;
157 /* Failure context. This is allocated when failure packet is received.
158 Failure packets are processed with timeout and data is saved in this
161 SilcPacketStream sock;
163 } *SilcServerFailureContext;
165 /* Rekey must be performed at the lastest when this many packets is sent */
166 #define SILC_SERVER_REKEY_THRESHOLD 0xfffffe00
170 /* Return pointer to the primary router connection */
171 #define SILC_PRIMARY_ROUTE(server) \
172 (!server->standalone && server->router ? server->router->connection : NULL)
174 /* Return TRUE if a packet must be broadcasted (router broadcasts) */
175 #define SILC_BROADCAST(server) (server->server_type == SILC_ROUTER)
177 /* Return TRUE if entry is locally connected or local to us */
178 #define SILC_IS_LOCAL(entry) \
179 (((SilcIDListData)entry)->status & SILC_IDLIST_STATUS_LOCAL)
181 /* Registers generic task for file descriptor for reading from network and
182 writing to network. As being generic task the actual task is allocated
183 only once and after that the same task applies to all registered fd's. */
184 #define SILC_REGISTER_CONNECTION_FOR_IO(fd) \
186 silc_schedule_task_add(server->schedule, (fd), \
187 silc_server_packet_process, \
190 SILC_TASK_PRI_NORMAL); \
193 #define SILC_SET_CONNECTION_FOR_INPUT(s, fd) \
195 silc_schedule_set_listen_fd((s), (fd), SILC_TASK_READ, FALSE); \
198 #define SILC_SET_CONNECTION_FOR_OUTPUT(s, fd) \
200 silc_schedule_set_listen_fd((s), (fd), (SILC_TASK_READ | SILC_TASK_WRITE), \
204 #define SILC_OPER_STATS_UPDATE(c, type, mod) \
206 if ((c)->mode & (mod)) { \
207 if (SILC_IS_LOCAL((c))) \
208 server->stat.my_ ## type ## _ops--; \
209 if (server->server_type == SILC_ROUTER) \
210 server->stat. type ## _ops--; \
211 (c)->mode &= ~(mod); \
215 #define SILC_UMODE_STATS_UPDATE(oper, mod) \
217 if (client->mode & (mod)) { \
218 if (!(mode & (mod))) { \
219 if (SILC_IS_LOCAL(client)) \
220 server->stat.my_ ## oper ## _ops--; \
221 if (server->server_type == SILC_ROUTER) \
222 server->stat. oper ## _ops--; \
225 if (mode & (mod)) { \
226 if (SILC_IS_LOCAL(client)) \
227 server->stat.my_ ## oper ## _ops++; \
228 if (server->server_type == SILC_ROUTER) \
229 server->stat. oper ## _ops++; \
234 #define SILC_GET_SKE_FLAGS(x, p) \
236 if ((x)->param && (x)->param->key_exchange_pfs) \
237 (p) |= SILC_SKE_SP_FLAG_PFS; \
238 if (!(x)->publickeys) \
239 (p) |= SILC_SKE_SP_FLAG_MUTUAL; \
242 #define SILC_CONNTYPE_STRING(ctype) \
243 (ctype == SILC_CONN_CLIENT ? "Client" : \
244 ctype == SILC_CONN_SERVER ? "Server" : \
245 ctype == SILC_CONN_ROUTER ? "Router" : "Unknown")
248 SILC_TASK_CALLBACK(silc_server_rekey_final);
249 SILC_TASK_CALLBACK(silc_server_rekey_callback);
250 SILC_TASK_CALLBACK(silc_server_connect_to_router);
251 void silc_server_watcher_list_destroy(void *key, void *context,