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 unsigned int server_type : 2; /* Server type (server.h) */
124 unsigned int standalone : 1; /* Set if server is standalone, and
125 does not have connection to network. */
126 unsigned int listenning : 1; /* Set if server is listenning for
127 incoming connections. */
128 unsigned int background : 1; /* Set when server is on background */
129 unsigned int backup_router : 1; /* Set if this is backup router */
130 unsigned int backup_primary : 1; /* Set if we've switched our primary
131 router to a backup router. */
132 unsigned int backup_noswitch: 1; /* Set if we've won't switch to
133 become primary (we are backup) */
134 unsigned int backup_closed : 1; /* Set if backup closed connection.
135 Do not allow resuming in this case. */
136 unsigned int wait_backup : 1; /* Set if we are waiting for backup
137 router to connect to us. */
138 unsigned int server_shutdown: 1; /* Set when shutting down */
139 unsigned int no_reconnect : 1; /* If set, server won't reconnect to
140 router after disconnection. */
141 unsigned int no_conf : 1; /* Set when connecting without
145 /* Failure context. This is allocated when failure packet is received.
146 Failure packets are processed with timeout and data is saved in this
149 SilcPacketStream sock;
151 } *SilcServerFailureContext;
153 /* Rekey must be performed at the lastest when this many packets is sent */
154 #define SILC_SERVER_REKEY_THRESHOLD 0xfffffe00
158 /* Return pointer to the primary router connection */
159 #define SILC_PRIMARY_ROUTE(server) \
160 (!server->standalone && server->router ? server->router->connection : NULL)
162 /* Return TRUE if a packet must be broadcasted (router broadcasts) */
163 #define SILC_BROADCAST(server) (server->server_type == SILC_ROUTER)
165 /* Return TRUE if entry is locally connected or local to us */
166 #define SILC_IS_LOCAL(entry) \
167 (((SilcIDListData)entry)->status & SILC_IDLIST_STATUS_LOCAL)
169 /* Registers generic task for file descriptor for reading from network and
170 writing to network. As being generic task the actual task is allocated
171 only once and after that the same task applies to all registered fd's. */
172 #define SILC_REGISTER_CONNECTION_FOR_IO(fd) \
174 silc_schedule_task_add(server->schedule, (fd), \
175 silc_server_packet_process, \
178 SILC_TASK_PRI_NORMAL); \
181 #define SILC_SET_CONNECTION_FOR_INPUT(s, fd) \
183 silc_schedule_set_listen_fd((s), (fd), SILC_TASK_READ, FALSE); \
186 #define SILC_SET_CONNECTION_FOR_OUTPUT(s, fd) \
188 silc_schedule_set_listen_fd((s), (fd), (SILC_TASK_READ | SILC_TASK_WRITE), \
192 #define SILC_OPER_STATS_UPDATE(c, type, mod) \
194 if ((c)->mode & (mod)) { \
195 if (SILC_IS_LOCAL((c))) \
196 server->stat.my_ ## type ## _ops--; \
197 if (server->server_type == SILC_ROUTER) \
198 server->stat. type ## _ops--; \
199 (c)->mode &= ~(mod); \
203 #define SILC_UMODE_STATS_UPDATE(oper, mod) \
205 if (client->mode & (mod)) { \
206 if (!(mode & (mod))) { \
207 if (SILC_IS_LOCAL(client)) \
208 server->stat.my_ ## oper ## _ops--; \
209 if (server->server_type == SILC_ROUTER) \
210 server->stat. oper ## _ops--; \
213 if (mode & (mod)) { \
214 if (SILC_IS_LOCAL(client)) \
215 server->stat.my_ ## oper ## _ops++; \
216 if (server->server_type == SILC_ROUTER) \
217 server->stat. oper ## _ops++; \
222 #define SILC_GET_SKE_FLAGS(x, p) \
224 if ((x)->param && (x)->param->key_exchange_pfs) \
225 (p) |= SILC_SKE_SP_FLAG_PFS; \
226 if (!(x)->publickeys) \
227 (p) |= SILC_SKE_SP_FLAG_MUTUAL; \
230 #define SILC_CONNTYPE_STRING(ctype) \
231 (ctype == SILC_CONN_CLIENT ? "Client" : \
232 ctype == SILC_CONN_SERVER ? "Server" : \
233 ctype == SILC_CONN_ROUTER ? "Router" : "Unknown")
236 SILC_TASK_CALLBACK(silc_server_rekey_final);
237 SILC_TASK_CALLBACK(silc_server_rekey_callback);
238 SILC_TASK_CALLBACK(silc_server_connect_to_router);
239 SILC_TASK_CALLBACK(silc_server_connect_to_router_retry);
240 void silc_server_watcher_list_destroy(void *key, void *context,