updates.
[silc.git] / apps / silcd / server.c
index 2e85203df1d7335de7d244086c677cfb91a385b4..dfc4022578e6302bb65671d6847e58407525f30a 100644 (file)
@@ -659,7 +659,11 @@ SILC_TASK_CALLBACK(silc_server_connect_to_router)
       sconn->remote_host = strdup(ptr->host);
       sconn->remote_port = ptr->port;
       sconn->backup = ptr->backup_router;
-      
+      if (sconn->backup) {
+       sconn->backup_replace_ip = strdup(ptr->backup_replace_ip);
+       sconn->backup_replace_port = ptr->backup_replace_port;
+      }
+
       silc_schedule_task_add(server->schedule, fd, 
                             silc_server_connect_router,
                             (void *)sconn, 0, 1, SILC_TASK_TIMEOUT, 
@@ -872,6 +876,21 @@ SILC_TASK_CALLBACK(silc_server_connect_to_router_final)
 
   SILC_LOG_INFO(("Connected to router %s", sock->hostname));
 
+  /* Check that we do not have this ID already */
+  id_entry = silc_idlist_find_server_by_id(server->local_list, 
+                                          ctx->dest_id, TRUE, NULL);
+  if (id_entry) {
+    silc_idcache_del_by_context(server->local_list->servers, id_entry);
+  } else {
+    id_entry = silc_idlist_find_server_by_id(server->global_list, 
+                                            ctx->dest_id, TRUE, NULL);
+    if (id_entry) 
+      silc_idcache_del_by_context(server->global_list->servers, id_entry);
+  }
+
+  SILC_LOG_DEBUG(("New server id(%s)",
+                 silc_id_render(ctx->dest_id, SILC_ID_SERVER)));
+
   /* Add the connected router to local server list */
   id_entry = silc_idlist_add_server(server->local_list, strdup(sock->hostname),
                                    SILC_ROUTER, ctx->dest_id, NULL, sock);
@@ -912,20 +931,24 @@ SILC_TASK_CALLBACK(silc_server_connect_to_router_final)
       server->id_entry->router = id_entry;
       server->router = id_entry;
       server->standalone = FALSE;
-    }
     
-    /* If we are router then announce our possible servers. */
-    if (server->server_type == SILC_ROUTER)
-      silc_server_announce_servers(server, FALSE, 0);
+      /* If we are router then announce our possible servers. */
+      if (server->server_type == SILC_ROUTER)
+       silc_server_announce_servers(server, FALSE, 0, 
+                                    server->router->connection);
 
-    /* Announce our clients and channels to the router */
-    silc_server_announce_clients(server, 0);
-    silc_server_announce_channels(server, 0);
+      /* Announce our clients and channels to the router */
+      silc_server_announce_clients(server, 0, server->router->connection);
+      silc_server_announce_channels(server, 0, server->router->connection);
+    }
   } else {
     /* Add this server to be our backup router */
-    silc_server_backup_add(server, id_entry, FALSE);
+    silc_server_backup_add(server, id_entry, sconn->backup_replace_ip,
+                          sconn->backup_replace_port, FALSE);
   }
 
+  sock->protocol = NULL;
+
   /* Call the completion callback to indicate that we've connected to
      the router */
   if (sconn->callback)
@@ -935,17 +958,19 @@ SILC_TASK_CALLBACK(silc_server_connect_to_router_final)
   /* Free the temporary connection data context */
   if (sconn) {
     silc_free(sconn->remote_host);
+    silc_free(sconn->backup_replace_ip);
     silc_free(sconn);
   }
 
   /* Free the protocol object */
+  if (sock->protocol == protocol)
+    sock->protocol = NULL;
   silc_protocol_free(protocol);
   if (ctx->packet)
     silc_packet_context_free(ctx->packet);
   if (ctx->ske)
     silc_ske_free(ctx->ske);
   silc_free(ctx);
-  sock->protocol = NULL;
 }
 
 /* Host lookup callbcak that is called after the incoming connection's
@@ -1315,7 +1340,9 @@ SILC_TASK_CALLBACK(silc_server_accept_new_connection_final)
                               ctx->conn_type == SILC_SOCKET_TYPE_SERVER ?
                               SILC_SERVER : SILC_ROUTER, NULL, 
                               ctx->conn_type == SILC_SOCKET_TYPE_SERVER ?
-                              server->id_entry : NULL, sock);
+                              server->id_entry : 
+                              (conn->backup_router ? server->id_entry : 
+                               NULL), sock);
       if (!new_server) {
        SILC_LOG_ERROR(("Could not add new server to cache"));
        silc_free(sock->user_data);
@@ -1338,23 +1365,16 @@ SILC_TASK_CALLBACK(silc_server_accept_new_connection_final)
       /* If the incoming connection is router and marked as backup router
         then add it to be one of our backups */
       if (ctx->conn_type == SILC_SOCKET_TYPE_ROUTER && conn->backup_router) {
-       silc_server_backup_add(server, new_server, conn->backup_local);
+       silc_server_backup_add(server, new_server, conn->backup_replace_ip,
+                              conn->backup_replace_port, conn->backup_local);
 
        /* Change it back to SERVER type since that's what it really is. */
        if (conn->backup_local) {
          ctx->conn_type = SILC_SOCKET_TYPE_SERVER;
-         new_server->server_type = SILC_SOCKET_TYPE_SERVER;
+         new_server->server_type = SILC_BACKUP_ROUTER;
        }
       }
 
-#if 0
-      /* If the incoming connection is normal server and marked as backup
-        server then it will use us as backup router. We'll disable the
-        connection until it is allowed to be used. */
-      if (ctx->conn_type == SILC_SOCKET_TYPE_SERVER && conn->backup_router)
-       SILC_SET_DISABLED(sock);
-#endif
-
       /* Check whether this connection is to be our primary router connection
         if we do not already have the primary route. */
       if (server->standalone && ctx->conn_type == SILC_SOCKET_TYPE_ROUTER) {
@@ -1591,10 +1611,6 @@ SILC_TASK_CALLBACK(silc_server_packet_parse_real)
     goto out;
   }
 
-  /* If entry is disabled ignore what we got. */
-  if (idata && idata->status & SILC_IDLIST_STATUS_DISABLED)
-    goto out;
-
   if (ret == 0) {
     /* Parse the packet. Packet type is returned. */
     ret = silc_packet_parse(packet);
@@ -1604,6 +1620,11 @@ SILC_TASK_CALLBACK(silc_server_packet_parse_real)
     ret = silc_packet_parse_special(packet);
   }
 
+  /* If entry is disabled ignore what we got. */
+  if (ret != SILC_PACKET_RESUME_ROUTER &&
+      idata && idata->status & SILC_IDLIST_STATUS_DISABLED)
+    goto out;
+
   if (ret == SILC_PACKET_NONE)
     goto out;
 
@@ -2309,11 +2330,12 @@ void silc_server_free_sock_user_data(SilcServer server,
       SilcServerEntry user_data = (SilcServerEntry)sock->user_data;
       SilcServerEntry backup_router = NULL;
 
+      if (user_data->id)
+       backup_router = silc_server_backup_get(server, user_data->id);
+
       /* If this was our primary router connection then we're lost to
         the outside world. */
       if (server->router == user_data) {
-       backup_router = silc_server_backup_get(server);
-
        /* Check whether we have a backup router connection */
        if (!backup_router || backup_router == user_data) {
          silc_schedule_task_add(server->schedule, 0, 
@@ -2334,6 +2356,7 @@ void silc_server_free_sock_user_data(SilcServer server,
          server->id_entry->router = backup_router;
          server->router = backup_router;
          server->router_connect = time(0);
+         server->backup_primary = TRUE;
          if (server->server_type == SILC_BACKUP_ROUTER) {
            server->server_type = SILC_ROUTER;
 
@@ -2348,6 +2371,15 @@ void silc_server_free_sock_user_data(SilcServer server,
          silc_server_backup_replaced_add(server, user_data->id, 
                                          backup_router);
        }
+      } else if (backup_router) {
+       SILC_LOG_INFO(("Enabling the use of backup router %s",
+                      backup_router->server_name));
+       SILC_LOG_DEBUG(("Enabling the use of backup router %s",
+                       backup_router->server_name));
+
+       /* Mark this connection as replaced */
+       silc_server_backup_replaced_add(server, user_data->id, 
+                                       backup_router);
       }
 
       if (!backup_router) {
@@ -2360,13 +2392,12 @@ void silc_server_free_sock_user_data(SilcServer server,
           router. This also removes the clients that *really* was owned
           by the primary router and went down with the router.  */
        silc_server_update_clients_by_server(server, user_data, backup_router,
-                                            TRUE);
+                                            TRUE, TRUE);
       }
 
       /* Free the server entry */
       silc_server_backup_del(server, user_data);
-      if (user_data->id)
-       silc_server_backup_replaced_del(server, user_data->id);
+      silc_server_backup_replaced_del(server, user_data);
       silc_idlist_del_data(user_data);
       silc_idlist_del_server(server->local_list, user_data);
       server->stat.my_servers--;
@@ -2378,11 +2409,14 @@ void silc_server_free_sock_user_data(SilcServer server,
        /* Announce all of our stuff that was created about 5 minutes ago.
           The backup router knows all the other stuff already. */
        if (server->server_type == SILC_ROUTER)
-         silc_server_announce_servers(server, FALSE, time(0) - 300);
+         silc_server_announce_servers(server, FALSE, time(0) - 300,
+                                      backup_router->connection);
 
        /* Announce our clients and channels to the router */
-       silc_server_announce_clients(server, time(0) - 300);
-       silc_server_announce_channels(server, time(0) - 300);
+       silc_server_announce_clients(server, time(0) - 300,
+                                    backup_router->connection);
+       silc_server_announce_channels(server, time(0) - 300,
+                                     backup_router->connection);
       }
       break;
     }
@@ -3076,20 +3110,21 @@ static void silc_server_announce_get_servers(SilcServer server,
    will be announced. */
 
 void silc_server_announce_servers(SilcServer server, bool global,
-                                 unsigned long creation_time)
+                                 unsigned long creation_time,
+                                 SilcSocketConnection remote)
 {
   SilcBuffer servers = NULL;
 
   SILC_LOG_DEBUG(("Announcing servers"));
 
   /* Get servers in local list */
-  silc_server_announce_get_servers(server, server->router,
+  silc_server_announce_get_servers(server, remote->user_data,
                                   server->local_list, &servers,
                                   creation_time);
 
   if (global)
     /* Get servers in global list */
-    silc_server_announce_get_servers(server, server->router,
+    silc_server_announce_get_servers(server, remote->user_data,
                                     server->global_list, &servers,
                                     creation_time);
 
@@ -3098,7 +3133,7 @@ void silc_server_announce_servers(SilcServer server, bool global,
     SILC_LOG_HEXDUMP(("servers"), servers->data, servers->len);
 
     /* Send the packet */
-    silc_server_packet_send(server, server->router->connection,
+    silc_server_packet_send(server, remote,
                            SILC_PACKET_NEW_ID, SILC_PACKET_FLAG_LIST,
                            servers->data, servers->len, TRUE);
 
@@ -3157,7 +3192,8 @@ static void silc_server_announce_get_clients(SilcServer server,
    announced. */
 
 void silc_server_announce_clients(SilcServer server,
-                                 unsigned long creation_time)
+                                 unsigned long creation_time,
+                                 SilcSocketConnection remote)
 {
   SilcBuffer clients = NULL;
 
@@ -3177,7 +3213,7 @@ void silc_server_announce_clients(SilcServer server,
     SILC_LOG_HEXDUMP(("clients"), clients->data, clients->len);
 
     /* Send the packet */
-    silc_server_packet_send(server, server->router->connection,
+    silc_server_packet_send(server, remote,
                            SILC_PACKET_NEW_ID, SILC_PACKET_FLAG_LIST,
                            clients->data, clients->len, TRUE);
 
@@ -3352,7 +3388,8 @@ void silc_server_announce_get_channels(SilcServer server,
    was provided. */
 
 void silc_server_announce_channels(SilcServer server,
-                                  unsigned long creation_time)
+                                  unsigned long creation_time,
+                                  SilcSocketConnection remote)
 {
   SilcBuffer channels = NULL, channel_users = NULL;
   SilcBuffer *channel_users_modes = NULL;
@@ -3380,7 +3417,7 @@ void silc_server_announce_channels(SilcServer server,
     SILC_LOG_HEXDUMP(("channels"), channels->data, channels->len);
 
     /* Send the packet */
-    silc_server_packet_send(server, server->router->connection,
+    silc_server_packet_send(server, remote,
                            SILC_PACKET_NEW_CHANNEL, SILC_PACKET_FLAG_LIST,
                            channels->data, channels->len,
                            FALSE);
@@ -3394,7 +3431,7 @@ void silc_server_announce_channels(SilcServer server,
                     channel_users->len);
 
     /* Send the packet */
-    silc_server_packet_send(server, server->router->connection,
+    silc_server_packet_send(server, remote,
                            SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
                            channel_users->data, channel_users->len,
                            FALSE);
@@ -3411,7 +3448,7 @@ void silc_server_announce_channels(SilcServer server,
                       channel_users_modes[i]->head);
       SILC_LOG_HEXDUMP(("channel users modes"), channel_users_modes[i]->data, 
                       channel_users_modes[i]->len);
-      silc_server_packet_send_dest(server, server->router->connection,
+      silc_server_packet_send_dest(server, remote,
                                   SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
                                   channel_ids[i], SILC_ID_CHANNEL,
                                   channel_users_modes[i]->data, 
@@ -3795,7 +3832,7 @@ SILC_TASK_CALLBACK_GLOBAL(silc_server_rekey_final)
   SILC_LOG_DEBUG(("Start"));
 
   if (protocol->state == SILC_PROTOCOL_STATE_ERROR ||
-       protocol->state == SILC_PROTOCOL_STATE_FAILURE) {
+      protocol->state == SILC_PROTOCOL_STATE_FAILURE) {
     /* Error occured during protocol */
     SILC_LOG_ERROR(("Error occurred during rekey protocol"));
     silc_protocol_cancel(protocol, server->schedule);