Integer type name change.
[silc.git] / apps / silcd / server.h
index 296c35cc4605029c1afea237fc57c45049d8fec6..d442bc033055c1df722d715ec245741dca8bff25 100644 (file)
    the object private hence this declaration. */
 typedef struct SilcServerStruct *SilcServer;
 
-#define SILC_SERVER_MAX_CONNECTIONS 10000
+/* Forward declaration of backup server context */
+typedef struct SilcServerBackupStruct *SilcServerBackup;
+
+/* Callback function that is called after the key exchange and connection
+   authentication protocols has been completed with a remote router. The
+   `server_entry' is the remote router entry. */
+typedef void (*SilcServerConnectRouterCallback)(SilcServer server,
+                                               SilcServerEntry server_entry,
+                                               void *context);
+
+/* Connection structure used when connection to remote */
+typedef struct {
+  SilcSocketConnection sock;
+
+  /* Remote host name and port */
+  char *remote_host;
+  int remote_port;
+  bool backup;
+  char *backup_replace_ip;
+  int backup_replace_port;
+  bool no_reconnect;
+
+  /* Connection configuration (maybe NULL), and connection params */
+  void *conn;
+  void *param;
+
+  /* Current connection retry info */
+  SilcUInt32 retry_count;
+  SilcUInt32 retry_timeout;
+
+  /* Back pointer to server */
+  SilcServer server;
+
+  SilcServerConnectRouterCallback callback;
+  void *callback_context;
+} *SilcServerConnection;
 
 /* General definitions */
 
@@ -36,35 +71,26 @@ typedef struct SilcServerStruct *SilcServer;
 /* Server and router. Used internally by the code. */
 #define SILC_SERVER 0
 #define SILC_ROUTER 1
+#define SILC_BACKUP_ROUTER 2
+
+/* Default parameter values */
 
 /* Connection retry timeout. We implement exponential backoff algorithm
-   in connection retry. The interval of timeuot grows when retry count
+   in connection retry. The interval of timeout grows when retry count
    grows. */
-#define SILC_SERVER_RETRY_COUNT        4        /* Max retry count */
-#define SILC_SERVER_RETRY_MULTIPLIER   7 / 4    /* Interval growth */
+#define SILC_SERVER_RETRY_COUNT        7        /* Max retry count */
+#define SILC_SERVER_RETRY_MULTIPLIER   2        /* Interval growth */
 #define SILC_SERVER_RETRY_RANDOMIZER   2        /* timeout += rnd % 2 */
 #define SILC_SERVER_RETRY_INTERVAL_MIN 10       /* Min retry timeout */
 #define SILC_SERVER_RETRY_INTERVAL_MAX 600      /* Max generated timeout */
 
-/* 
-   Silc Server Params.
-
-   Structure to hold various default parameters for server that can be
-   given before running the server. 
-
-*/
-typedef struct {
-  unsigned int retry_count;
-  unsigned long retry_interval_min;
-  unsigned long retry_interval_min_usec;
-  unsigned long retry_interval_max;
-  char retry_keep_trying;
-
-  unsigned long protocol_timeout;
-  unsigned long protocol_timeout_usec;
-
-  char require_reverse_mapping;
-} *SilcServerParams;
+#define SILC_SERVER_KEEPALIVE          300      /* Heartbeat interval */
+#define SILC_SERVER_CHANNEL_REKEY      3600     /* Channel rekey interval */
+#define SILC_SERVER_REKEY              3600     /* Session rekey interval */
+#define SILC_SERVER_SKE_TIMEOUT        60       /* SKE timeout */
+#define SILC_SERVER_CONNAUTH_TIMEOUT   60       /* CONN_AUTH timeout */
+#define SILC_SERVER_MAX_CONNECTIONS    1000     /* Max connections */
+#define SILC_SERVER_MAX_CONNECTIONS_SINGLE 1000  /* Max connections per host */
 
 /* Macros */
 
@@ -79,41 +105,50 @@ do {                                                               \
   silc_free(__fmt__);                                          \
 } while(0);
 
+/* Check whether rekey protocol is active */
+#define SILC_SERVER_IS_REKEY(sock)                                     \
+  (sock->protocol && sock->protocol->protocol &&                       \
+   sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY)
+
 /* Prototypes */
 int silc_server_alloc(SilcServer *new_server);
 void silc_server_free(SilcServer server);
 int silc_server_init(SilcServer server);
 void silc_server_daemonise(SilcServer server);
+void silc_server_drop(SilcServer server);
 void silc_server_run(SilcServer server);
 void silc_server_stop(SilcServer server);
-void silc_server_packet_parse(SilcPacketParserContext *parser_context);
+void silc_server_start_key_exchange(SilcServer server,
+                                   SilcServerConnection sconn,
+                                   int sock);
+bool silc_server_packet_parse(SilcPacketParserContext *parser_context,
+                             void *context);
 void silc_server_packet_parse_type(SilcServer server, 
                                   SilcSocketConnection sock,
                                   SilcPacketContext *packet);
 void silc_server_create_connection(SilcServer server,
-                                  char *remote_host, unsigned int port);
+                                  const char *remote_host, SilcUInt32 port);
 void silc_server_close_connection(SilcServer server,
                                  SilcSocketConnection sock);
 void silc_server_free_client_data(SilcServer server, 
                                  SilcSocketConnection sock,
-                                 SilcClientEntry client, char *signoff);
+                                 SilcClientEntry client, 
+                                 int notify,
+                                 const char *signoff);
 void silc_server_free_sock_user_data(SilcServer server, 
-                                    SilcSocketConnection sock);
-int silc_server_channel_has_global(SilcChannelEntry channel);
-int silc_server_channel_has_local(SilcChannelEntry channel);
-int silc_server_remove_clients_by_server(SilcServer server, 
-                                        SilcServerEntry entry);
+                                    SilcSocketConnection sock,
+                                    const char *signoff_message);
 void silc_server_remove_from_channels(SilcServer server, 
                                      SilcSocketConnection sock,
                                      SilcClientEntry client,
-                                     char *signoff_message);
+                                     int notify,
+                                     char *signoff_message,
+                                     int keygen);
 int silc_server_remove_from_one_channel(SilcServer server, 
                                        SilcSocketConnection sock,
                                        SilcChannelEntry channel,
                                        SilcClientEntry client,
                                        int notify);
-int silc_server_client_on_channel(SilcClientEntry client,
-                                 SilcChannelEntry channel);
 void silc_server_disconnect_remote(SilcServer server,
                                   SilcSocketConnection sock,
                                   const char *fmt, ...);
@@ -130,28 +165,60 @@ silc_server_create_new_channel_with_id(SilcServer server,
                                       char *channel_name,
                                       SilcChannelID *channel_id,
                                       int broadcast);
-void silc_server_create_channel_key(SilcServer server, 
+bool silc_server_create_channel_key(SilcServer server, 
                                    SilcChannelEntry channel,
-                                   unsigned int key_len);
+                                   SilcUInt32 key_len);
 SilcChannelEntry silc_server_save_channel_key(SilcServer server,
                                              SilcBuffer key_payload,
                                              SilcChannelEntry channel);
 void silc_server_perform_heartbeat(SilcSocketConnection sock,
                                   void *hb_context);
-void silc_server_announce_servers(SilcServer server);
-void silc_server_announce_clients(SilcServer server);
-void silc_server_announce_channels(SilcServer server);
+void silc_server_announce_get_channel_topic(SilcServer server,
+                                           SilcChannelEntry channel,
+                                           SilcBuffer *topic);
+void silc_server_announce_get_channel_users(SilcServer server,
+                                           SilcChannelEntry channel,
+                                           SilcBuffer *channel_users,
+                                           SilcBuffer *channel_users_modes);
+void silc_server_announce_get_channels(SilcServer server,
+                                      SilcIDList id_list,
+                                      SilcBuffer *channels,
+                                      SilcBuffer *channel_users,
+                                      SilcBuffer **channel_users_modes,
+                                      SilcUInt32 *channel_users_modes_c,
+                                      SilcBuffer **channel_topics,
+                                      SilcChannelID ***channel_ids,
+                                      unsigned long creation_time);
+void silc_server_announce_servers(SilcServer server, bool global,
+                                 unsigned long creation_time,
+                                 SilcSocketConnection remote);
+void silc_server_announce_clients(SilcServer server,
+                                 unsigned long creation_time,
+                                 SilcSocketConnection remote);
+void silc_server_announce_channels(SilcServer server,
+                                  unsigned long creation_time,
+                                  SilcSocketConnection remote);
 void silc_server_get_users_on_channel(SilcServer server,
                                      SilcChannelEntry channel,
                                      SilcBuffer *user_list,
                                      SilcBuffer *mode_list,
-                                     unsigned int *user_count);
+                                     SilcUInt32 *user_count);
 void silc_server_save_users_on_channel(SilcServer server,
                                       SilcSocketConnection sock,
                                       SilcChannelEntry channel,
                                       SilcClientID *noadd,
                                       SilcBuffer user_list,
                                       SilcBuffer mode_list,
-                                      unsigned int user_count);
+                                      SilcUInt32 user_count);
+SilcSocketConnection silc_server_get_client_route(SilcServer server,
+                                                 unsigned char *id_data,
+                                                 SilcUInt32 id_len,
+                                                 SilcClientID *client_id,
+                                                 SilcIDListData *idata);
+SilcBuffer silc_server_get_client_channel_list(SilcServer server,
+                                              SilcClientEntry client);
+SilcClientEntry silc_server_get_client_resolve(SilcServer server,
+                                              SilcClientID *client_id,
+                                              bool *resolved);
 
 #endif