5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2007 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 {
73 SilcSchedule schedule; /* Server scheduler */
74 SilcDList listeners; /* TCP listeners */
75 SilcPacketEngine packet_engine; /* Packet engine */
76 SilcDList conns; /* Connections in server */
77 SilcSKR repository; /* Public key repository */
78 SilcPublicKey public_key; /* Server public key */
79 SilcPrivateKey private_key; /* Server private key */
80 SilcDList expired_clients; /* Expired client entries */
81 SilcHttpServer httpd; /* HTTP server */
83 char *server_name; /* Server's name */
84 SilcServerEntry id_entry; /* Server's local entry */
85 SilcServerID *id; /* Server's ID */
86 unsigned char id_string[32]; /* Server's ID as string */
87 SilcUInt32 id_string_len;
88 SilcUInt32 starttime; /* Server start time */
90 SilcServerEntry router; /* Pointer to the primary router */
91 unsigned long router_connect; /* Time when router was connected */
92 SilcServerConnection router_conn; /* non-NULL when connecting to the
93 primary router, and NULL otherwise. */
94 SilcServerBackup backup; /* Backup routers */
96 /* Current command identifier, 0 not used */
100 SilcIDList local_list;
101 SilcIDList global_list;
102 SilcHashTable watcher_list;
103 SilcHashTable watcher_list_pk;
105 /* Hash objects for general hashing */
109 /* Configuration object */
110 SilcServerConfig config;
111 SilcServerConfigRef config_ref;
117 /* Server statistics */
118 SilcServerStatistics stat;
120 /* Pending command queue */
121 SilcDList pending_commands;
123 /* Purge context for disconnected clients */
124 SilcIDListPurge purge_i;
125 SilcIDListPurge purge_g;
127 unsigned int server_type : 2; /* Server type (server.h) */
128 unsigned int standalone : 1; /* Set if server is standalone, and
129 does not have connection to network. */
130 unsigned int listenning : 1; /* Set if server is listenning for
131 incoming connections. */
132 unsigned int background : 1; /* Set when server is on background */
133 unsigned int backup_router : 1; /* Set if this is backup router */
134 unsigned int backup_primary : 1; /* Set if we've switched our primary
135 router to a backup router. */
136 unsigned int backup_noswitch: 1; /* Set if we've won't switch to
137 become primary (we are backup) */
138 unsigned int backup_closed : 1; /* Set if backup closed connection.
139 Do not allow resuming in this case. */
140 unsigned int wait_backup : 1; /* Set if we are waiting for backup
141 router to connect to us. */
142 unsigned int server_shutdown: 1; /* Set when shutting down */
143 unsigned int no_reconnect : 1; /* If set, server won't reconnect to
144 router after disconnection. */
145 unsigned int no_conf : 1; /* Set when connecting without
149 /* Failure context. This is allocated when failure packet is received.
150 Failure packets are processed with timeout and data is saved in this
153 SilcPacketStream sock;
155 } *SilcServerFailureContext;
157 /* Rekey must be performed at the lastest when this many packets is sent */
158 #define SILC_SERVER_REKEY_THRESHOLD 0xfffffe00
162 /* Return pointer to the primary router connection */
163 #define SILC_PRIMARY_ROUTE(server) \
164 (!server->standalone && server->router ? server->router->connection : NULL)
166 /* Return TRUE if a packet must be broadcasted (router broadcasts) */
167 #define SILC_BROADCAST(server) (server->server_type == SILC_ROUTER)
169 /* Return TRUE if entry is locally connected or local to us */
170 #define SILC_IS_LOCAL(entry) \
171 (((SilcIDListData)entry)->status & SILC_IDLIST_STATUS_LOCAL)
173 /* Registers generic task for file descriptor for reading from network and
174 writing to network. As being generic task the actual task is allocated
175 only once and after that the same task applies to all registered fd's. */
176 #define SILC_REGISTER_CONNECTION_FOR_IO(fd) \
178 silc_schedule_task_add(server->schedule, (fd), \
179 silc_server_packet_process, \
182 SILC_TASK_PRI_NORMAL); \
185 #define SILC_SET_CONNECTION_FOR_INPUT(s, fd) \
187 silc_schedule_set_listen_fd((s), (fd), SILC_TASK_READ, FALSE); \
190 #define SILC_SET_CONNECTION_FOR_OUTPUT(s, fd) \
192 silc_schedule_set_listen_fd((s), (fd), (SILC_TASK_READ | SILC_TASK_WRITE), \
196 #define SILC_OPER_STATS_UPDATE(c, type, mod) \
198 if ((c)->mode & (mod)) { \
199 if (SILC_IS_LOCAL((c))) \
200 server->stat.my_ ## type ## _ops--; \
201 if (server->server_type == SILC_ROUTER) \
202 server->stat. type ## _ops--; \
203 (c)->mode &= ~(mod); \
207 #define SILC_UMODE_STATS_UPDATE(oper, mod) \
209 if (client->mode & (mod)) { \
210 if (!(mode & (mod))) { \
211 if (SILC_IS_LOCAL(client)) \
212 server->stat.my_ ## oper ## _ops--; \
213 if (server->server_type == SILC_ROUTER) \
214 server->stat. oper ## _ops--; \
217 if (mode & (mod)) { \
218 if (SILC_IS_LOCAL(client)) \
219 server->stat.my_ ## oper ## _ops++; \
220 if (server->server_type == SILC_ROUTER) \
221 server->stat. oper ## _ops++; \
226 #define SILC_GET_SKE_FLAGS(x, p) \
228 if ((x)->param && (x)->param->key_exchange_pfs) \
229 (p) |= SILC_SKE_SP_FLAG_PFS; \
230 if (!(x)->publickeys) \
231 (p) |= SILC_SKE_SP_FLAG_MUTUAL; \
234 #define SILC_CONNTYPE_STRING(ctype) \
235 (ctype == SILC_CONN_CLIENT ? "Client" : \
236 ctype == SILC_CONN_SERVER ? "Server" : \
237 ctype == SILC_CONN_ROUTER ? "Router" : "Unknown")
240 SILC_TASK_CALLBACK(silc_server_rekey_final);
241 SILC_TASK_CALLBACK(silc_server_rekey_callback);
242 SILC_TASK_CALLBACK(silc_server_connect_to_router);
243 void silc_server_watcher_list_destroy(void *key, void *context,