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- /*
- * Copyright (c) 2006-2017 DMDirc Developers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
- * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
- * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
- package com.dmdirc.addons.identd;
-
- import com.dmdirc.config.GlobalConfig;
- import com.dmdirc.interfaces.ConnectionManager;
- import com.dmdirc.config.provider.AggregateConfigProvider;
- import com.dmdirc.plugins.PluginDomain;
- import com.dmdirc.util.system.SystemInfo;
- import java.io.IOException;
- import java.net.ServerSocket;
- import java.net.Socket;
- import java.util.ArrayList;
- import java.util.List;
- import javax.inject.Inject;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
-
- import static com.dmdirc.util.LogUtils.USER_ERROR;
-
- /**
- * The IdentdServer watches over the ident port when required
- */
- public final class IdentdServer implements Runnable {
-
- private static final Logger LOG = LoggerFactory.getLogger(IdentdServer.class);
- /** The Thread in use for this server */
- private volatile Thread myThread;
- /** The current socket in use for this server */
- private ServerSocket serverSocket;
- /** Arraylist of all the clients we have */
- private final List<IdentClient> clientList = new ArrayList<>();
- /** Server manager. */
- private final ConnectionManager connectionManager;
- /** Have we failed to start this server previously? */
- private boolean failed;
- /** Global configuration to read plugin's from. */
- private final AggregateConfigProvider config;
- /** This plugin's config settings domain. */
- private final String domain;
- /** System info wrapper to use for the ident client. */
- private final SystemInfo systemInfo;
-
- /**
- * Create the IdentdServer.
- *
- * @param connectionManager Server manager to iterate over servers
- * @param config Global config
- * @param domain This plugin's setting domain
- */
- @Inject
- public IdentdServer(final ConnectionManager connectionManager,
- @GlobalConfig final AggregateConfigProvider config,
- @PluginDomain(IdentdPlugin.class) final String domain,
- final SystemInfo systemInfo) {
- this.connectionManager = connectionManager;
- this.config = config;
- this.domain = domain;
- this.systemInfo = systemInfo;
- }
-
- /**
- * Run this IdentdServer.
- */
- @Override
- public void run() {
- final Thread thisThread = Thread.currentThread();
- while (myThread == thisThread) {
- try {
- final Socket clientSocket = serverSocket.accept();
- final IdentClient client = new IdentClient(this, clientSocket, connectionManager,
- config, domain, systemInfo);
- client.start();
- addClient(client);
- } catch (IOException e) {
- if (myThread == thisThread) {
- LOG.error(USER_ERROR, "Accepting client failed: {}", e.getMessage(), e);
- }
- }
- }
- }
-
- /**
- * Add an IdentClient to the clientList
- *
- * @param client Client to add
- */
- public void addClient(final IdentClient client) {
- synchronized (clientList) {
- clientList.add(client);
- }
- }
-
- /**
- * Remove an IdentClient from the clientList
- *
- * @param client Client to remove
- */
- public void delClient(final IdentClient client) {
- synchronized (clientList) {
- for (int i = 0; i < clientList.size(); ++i) {
- if (clientList.get(i) == client) {
- clientList.remove(i);
- break;
- }
- }
- }
- }
-
- /**
- * Check if the server is currently running
- *
- * @return True if the server is running
- */
- public boolean isRunning() {
- return myThread != null;
- }
-
- /**
- * Start the ident server
- */
- public void startServer() {
- if (!failed && myThread == null) {
- try {
- final int identPort = config.getOptionInt(domain, "advanced.port");
- serverSocket = new ServerSocket(identPort);
- myThread = new Thread(this);
- myThread.start();
- } catch (IOException e) {
- LOG.error(USER_ERROR, "Unable to start identd server: {}", e.getMessage(), e);
- if ("Permission denied".equals(e.getMessage())) {
- failed = true;
- }
- }
- }
- }
-
- /**
- * Stop the ident server
- */
- public void stopServer() {
- if (myThread != null) {
- final Thread tmpThread = myThread;
- myThread = null;
- if (tmpThread != null) {
- tmpThread.interrupt();
- }
- try {
- serverSocket.close();
- } catch (IOException e) {
- LOG.info("Unable to close socket: {}", e.getMessage(), e);
- }
-
- synchronized (clientList) {
- clientList.forEach(IdentClient::close);
- clientList.clear();
- }
- }
- }
-
- }
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