/* will create new Client object and add it to the 'clients' list
* and will also register it's socket channel with 'readSelector'.
* Use 'sendBufferSize' to specify socket's send buffer size. */
public static Client addNewClient(SocketChannel chan, Selector readSelector, int sendBufferSize) {
Client client = new Client(chan);
clients.add(client);
// register the channel with the selector
// store a new Client as the Key's attachment
try {
chan.configureBlocking(false);
chan.socket().setSendBufferSize(sendBufferSize);
// ***chan.socket().setSoTimeout(TIMEOUT_LENGTH); -> this doesn't seem to have an effect with
// java.nio
client.selKey = chan.register(readSelector, SelectionKey.OP_READ, client);
} catch (ClosedChannelException cce) {
killClient(client);
return null;
} catch (IOException ioe) {
killClient(client);
return null;
} catch (Exception e) {
killClient(client);
return null;
}
return client;
}
/* this method disconnects and removes client from the clients list.
* Also cleans up after him (channels, battles) and notifies other
* users of his departure. "reason" is used with LEFT command to
* notify other users on same channel of this client's departure
* reason (it may be left blank ("") to give no reason). */
public static boolean killClient(Client client, String reason) {
int index = clients.indexOf(client);
if (index == -1) return false;
if (!client.alive) return false;
client.disconnect();
clients.remove(index);
client.alive = false;
if (reason.trim().equals("")) reason = "Quit";
// let's remove client from all channels he is participating in:
client.leaveAllChannels(reason);
if (client.battleID != -1) {
Battle bat = Battles.getBattleByID(client.battleID);
if (bat == null) {
System.out.println("Serious error occured: Invalid battle ID. Server will now exit!");
TASServer.closeServerAndExit();
}
Battles.leaveBattle(
client, bat); // automatically checks if client is founder and closes the battle
}
if (client.account.accessLevel() != Account.NIL_ACCESS) {
sendToAllRegisteredUsers("REMOVEUSER " + client.account.user);
if (TASServer.DEBUG > 0) System.out.println("Registered user killed: " + client.account.user);
} else {
if (TASServer.DEBUG > 0) System.out.println("Unregistered user killed");
}
if (TASServer.LAN_MODE) {
Accounts.removeAccount(client.account);
}
return true;
}
/* notifies client of all statuses, including his own (but only if they are different from 0) */
public static void sendInfoOnStatusesToClient(Client client) {
for (int i = 0; i < clients.size(); i++) {
if (clients.get(i).account.accessLevel() < Account.NORMAL_ACCESS) continue;
if (clients.get(i).status
!= 0) // only send it if not 0. User assumes that every new user's status is 0, so we
// don't need to tell him that explicitly.
client.sendLine("CLIENTSTATUS " + clients.get(i).account.user + " " + clients.get(i).status);
}
}
/* sends a list of all users connected to the server to client (this list includes
* the client itself, assuming he is already logged in and in the list) */
public static void sendListOfAllUsersToClient(Client client) {
for (int i = 0; i < clients.size(); i++) {
if (clients.get(i).account.accessLevel() < Account.NORMAL_ACCESS) continue;
client.sendLine(
"ADDUSER "
+ clients.get(i).account.user
+ " "
+ clients.get(i).country
+ " "
+ clients.get(i).cpu);
}
}