apps/silcd/server.h

   1 /*
   2
   3   server.h
   4
   5   Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
   6
   7   Copyright (C) 1997 - 2001 Pekka Riikonen
   8
   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.
  13
  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.
  18
  19 */
  20
  21 #ifndef SERVER_H
  22 #define SERVER_H
  23
  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;
  28
  29 #define SILC_SERVER_MAX_CONNECTIONS 10000
  30
  31 /* General definitions */
  32
  33 /* SILC port */
  34 #define SILC_PORT 768;
  35
  36 /* Server and router. Used internally by the code. */
  37 #define SILC_SERVER 0
  38 #define SILC_ROUTER 1
  39
  40 /* Connection retry timeout. We implement exponential backoff algorithm
  41    in connection retry. The interval of timeuot grows when retry count
  42    grows. */
  43 #define SILC_SERVER_RETRY_COUNT        4         /* Max retry count */
  44 #define SILC_SERVER_RETRY_MULTIPLIER   7 / 4     /* Interval growth */
  45 #define SILC_SERVER_RETRY_RANDOMIZER   2         /* timeout += rnd % 2 */
  46 #define SILC_SERVER_RETRY_INTERVAL_MIN 10        /* Min retry timeout */
  47 #define SILC_SERVER_RETRY_INTERVAL_MAX 600       /* Max generated timeout */
  48
  49 /*
  50    Silc Server Params.
  51
  52    Structure to hold various default parameters for server that can be
  53    given before running the server.
  54
  55 */
  56 typedef struct {
  57   unsigned int retry_count;
  58   unsigned long retry_interval_min;
  59   unsigned long retry_interval_min_usec;
  60   unsigned long retry_interval_max;
  61   char retry_keep_trying;
  62
  63   unsigned long protocol_timeout;
  64   unsigned long protocol_timeout_usec;
  65
  66   char require_reverse_mapping;
  67 } *SilcServerParams;
  68
  69 /* Macros */
  70
  71 /* This macro is used to send notify messages with formatted string. The
  72    string is formatted with arguments and the formatted string is sent as
  73    argument. */
  74 #define SILC_SERVER_SEND_NOTIFY(server, sock, type, fmt)        \
  75 do {                                                            \
  76   char *__fmt__ = silc_format fmt;                              \
  77   silc_server_send_notify(server, sock, FALSE,                  \
  78                           type, 1, __fmt__, strlen(__fmt__));   \
  79   silc_free(__fmt__);                                           \
  80 } while(0);
  81
  82 /* Prototypes */
  83 int silc_server_alloc(SilcServer *new_server);
  84 void silc_server_free(SilcServer server);
  85 int silc_server_init(SilcServer server);
  86 void silc_server_daemonise(SilcServer server);
  87 void silc_server_run(SilcServer server);
  88 void silc_server_stop(SilcServer server);
  89 void silc_server_packet_parse(SilcPacketParserContext *parser_context);
  90 void silc_server_packet_parse_type(SilcServer server,
  91                                    SilcSocketConnection sock,
  92                                    SilcPacketContext *packet);
  93 void silc_server_create_connection(SilcServer server,
  94                                    char *remote_host, unsigned int port);
  95 void silc_server_close_connection(SilcServer server,
  96                                   SilcSocketConnection sock);
  97 void silc_server_free_client_data(SilcServer server,
  98                                   SilcSocketConnection sock,
  99                                   SilcClientEntry client,
 100                                   int notify,
 101                                   char *signoff);
 102 void silc_server_free_sock_user_data(SilcServer server,
 103                                      SilcSocketConnection sock);
 104 int silc_server_channel_has_global(SilcChannelEntry channel);
 105 int silc_server_channel_has_local(SilcChannelEntry channel);
 106 int silc_server_remove_clients_by_server(SilcServer server,
 107                                          SilcServerEntry entry);
 108 void silc_server_remove_from_channels(SilcServer server,
 109                                       SilcSocketConnection sock,
 110                                       SilcClientEntry client,
 111                                       int notify,
 112                                       char *signoff_message,
 113                                       int keygen);
 114 int silc_server_remove_from_one_channel(SilcServer server,
 115                                         SilcSocketConnection sock,
 116                                         SilcChannelEntry channel,
 117                                         SilcClientEntry client,
 118                                         int notify);
 119 int silc_server_client_on_channel(SilcClientEntry client,
 120                                   SilcChannelEntry channel);
 121 void silc_server_disconnect_remote(SilcServer server,
 122                                    SilcSocketConnection sock,
 123                                    const char *fmt, ...);
 124 SilcChannelEntry silc_server_create_new_channel(SilcServer server,
 125                                                 SilcServerID *router_id,
 126                                                 char *cipher,
 127                                                 char *hmac,
 128                                                 char *channel_name,
 129                                                 int broadcast);
 130 SilcChannelEntry
 131 silc_server_create_new_channel_with_id(SilcServer server,
 132                                        char *cipher,
 133                                        char *hmac,
 134                                        char *channel_name,
 135                                        SilcChannelID *channel_id,
 136                                        int broadcast);
 137 void silc_server_create_channel_key(SilcServer server,
 138                                     SilcChannelEntry channel,
 139                                     unsigned int key_len);
 140 SilcChannelEntry silc_server_save_channel_key(SilcServer server,
 141                                               SilcBuffer key_payload,
 142                                               SilcChannelEntry channel);
 143 void silc_server_perform_heartbeat(SilcSocketConnection sock,
 144                                    void *hb_context);
 145 void silc_server_announce_servers(SilcServer server);
 146 void silc_server_announce_clients(SilcServer server);
 147 void silc_server_announce_channels(SilcServer server);
 148 void silc_server_get_users_on_channel(SilcServer server,
 149                                       SilcChannelEntry channel,
 150                                       SilcBuffer *user_list,
 151                                       SilcBuffer *mode_list,
 152                                       unsigned int *user_count);
 153 void silc_server_save_users_on_channel(SilcServer server,
 154                                        SilcSocketConnection sock,
 155                                        SilcChannelEntry channel,
 156                                        SilcClientID *noadd,
 157                                        SilcBuffer user_list,
 158                                        SilcBuffer mode_list,
 159                                        unsigned int user_count);
 160 SilcSocketConnection silc_server_get_client_route(SilcServer server,
 161                                                   unsigned char *id_data,
 162                                                   unsigned int id_len,
 163                                                   SilcIDListData *idata);
 164
 165 #endif