Java tutorial
/* * File : AuthenticatorWindow.java * Created : 25-Nov-2003 * By : parg * * Azureus - a Java Bittorrent client * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details ( see the LICENSE file ). * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.gudy.azureus2.ui.swt.auth; /** * @author parg * */ import java.net.*; import java.util.*; import org.eclipse.swt.*; import org.eclipse.swt.layout.*; import org.eclipse.swt.widgets.*; import org.gudy.azureus2.ui.swt.*; import org.gudy.azureus2.ui.swt.components.shell.ShellFactory; import org.gudy.azureus2.ui.swt.mainwindow.SWTThread; import org.gudy.azureus2.core3.internat.MessageText; import org.gudy.azureus2.core3.torrent.*; import org.gudy.azureus2.core3.util.*; import org.gudy.azureus2.core3.config.*; import org.gudy.azureus2.core3.security.*; import org.bouncycastle.util.encoders.Base64; import com.aelitis.azureus.core.networkmanager.admin.NetworkAdmin; import com.aelitis.azureus.ui.common.RememberedDecisionsManager; public class AuthenticatorWindow implements SEPasswordListener { private static final String CONFIG_PARAM = "swt.auth.persistent.cache"; protected Map auth_cache = new HashMap(); protected AEMonitor this_mon = new AEMonitor("AuthWind"); public AuthenticatorWindow() { SESecurityManager.addPasswordListener(this); // System.out.println( "AuthenticatorWindow"); Map cache = COConfigurationManager.getMapParameter(CONFIG_PARAM, new HashMap()); try { Iterator it = cache.entrySet().iterator(); while (it.hasNext()) { Map.Entry entry = (Map.Entry) it.next(); String key = (String) entry.getKey(); Map value = (Map) entry.getValue(); String user = new String((byte[]) value.get("user"), "UTF-8"); char[] pw = new String((byte[]) value.get("pw"), "UTF-8").toCharArray(); auth_cache.put(key, new authCache(key, new PasswordAuthentication(user, pw), true)); } } catch (Throwable e) { COConfigurationManager.setParameter(CONFIG_PARAM, new HashMap()); Debug.printStackTrace(e); } } protected void saveAuthCache() { try { this_mon.enter(); HashMap map = new HashMap(); Iterator it = auth_cache.values().iterator(); while (it.hasNext()) { authCache value = (authCache) it.next(); if (value.isPersistent()) { try { HashMap entry_map = new HashMap(); entry_map.put("user", value.getAuth().getUserName().getBytes("UTF-8")); entry_map.put("pw", new String(value.getAuth().getPassword()).getBytes("UTF-8")); map.put(value.getKey(), entry_map); } catch (Throwable e) { Debug.printStackTrace(e); } } } COConfigurationManager.setParameter(CONFIG_PARAM, map); } finally { this_mon.exit(); } } public void clearPasswords() { try { this_mon.enter(); auth_cache = new HashMap(); saveAuthCache(); } finally { this_mon.exit(); } } public PasswordAuthentication getAuthentication(String realm, URL tracker) { try { this_mon.enter(); return (getAuthentication(realm, tracker.getProtocol(), tracker.getHost(), tracker.getPort())); } finally { this_mon.exit(); } } public void setAuthenticationOutcome(String realm, URL tracker, boolean success) { try { this_mon.enter(); setAuthenticationOutcome(realm, tracker.getProtocol(), tracker.getHost(), tracker.getPort(), success); } finally { this_mon.exit(); } } public void setAuthenticationOutcome(String realm, String protocol, String host, int port, boolean success) { try { this_mon.enter(); String tracker = protocol + "://" + host + ":" + port + "/"; String auth_key = realm + ":" + tracker; authCache cache = (authCache) auth_cache.get(auth_key); if (cache != null) { cache.setOutcome(success); } } finally { this_mon.exit(); } } public PasswordAuthentication getAuthentication(String realm, String protocol, String host, int port) { try { this_mon.enter(); String tracker = protocol + "://" + host + ":" + port + "/"; InetAddress bind_ip = NetworkAdmin.getSingleton().getSingleHomedServiceBindAddress(); String self_addr; // System.out.println( "auth req for " + realm + " - " + tracker ); if (bind_ip == null || bind_ip.isAnyLocalAddress()) { self_addr = "127.0.0.1"; } else { self_addr = bind_ip.getHostAddress(); } // when the tracker is connected to internally we don't want to prompt // for the password. Here we return a special user and the password hash // which is picked up in the tracker auth code - search for "<internal>"! // also include the tracker IP as well as for scrapes these can occur on // a raw torrent which hasn't been modified to point to localhost if (host.equals(self_addr) || host.equals(COConfigurationManager.getStringParameter("Tracker IP", ""))) { try { byte[] pw = COConfigurationManager.getByteParameter("Tracker Password", new byte[0]); String str_pw = new String(Base64.encode(pw)); return (new PasswordAuthentication("<internal>", str_pw.toCharArray())); } catch (Throwable e) { Debug.printStackTrace(e); } } String auth_key = realm + ":" + tracker; authCache cache = (authCache) auth_cache.get(auth_key); if (cache != null) { PasswordAuthentication auth = cache.getAuth(); if (auth != null) { return (auth); } } String[] res = getAuthenticationDialog(realm, tracker); if (res == null) { return (null); } else { PasswordAuthentication auth = new PasswordAuthentication(res[0], res[1].toCharArray()); boolean save_pw = res[2].equals("true"); boolean old_entry_existed = auth_cache.put(auth_key, new authCache(auth_key, auth, save_pw)) != null; if (save_pw || old_entry_existed) { saveAuthCache(); } return (auth); } } finally { this_mon.exit(); } } protected String[] getAuthenticationDialog(final String realm, final String location) { final Display display = SWTThread.getInstance().getDisplay(); if (display.isDisposed()) { return (null); } final AESemaphore sem = new AESemaphore("SWTAuth"); final authDialog[] dialog = new authDialog[1]; TOTorrent torrent = TorrentUtils.getTLSTorrent(); final boolean is_tracker; final String details; if (torrent == null) { is_tracker = false; details = TorrentUtils.getTLSDescription(); } else { details = TorrentUtils.getLocalisedName(torrent); is_tracker = true; } try { display.asyncExec(new AERunnable() { public void runSupport() { dialog[0] = new authDialog(sem, display, realm, is_tracker, location, details); } }); } catch (Throwable e) { Debug.printStackTrace(e); return (null); } sem.reserve(); String user = dialog[0].getUsername(); String pw = dialog[0].getPassword(); String persist = dialog[0].savePassword() ? "true" : "false"; if (user == null) { return (null); } return (new String[] { user, pw == null ? "" : pw, persist }); } protected class authDialog { private Shell shell; private AESemaphore sem; private String username; private String password; private boolean persist; protected authDialog(AESemaphore _sem, Display display, String realm, boolean is_tracker, String target, String details) { sem = _sem; if (display.isDisposed()) { sem.release(); return; } final String ignore_key = "IgnoreAuth:" + realm + ":" + target + ":" + details; if (RememberedDecisionsManager.getRememberedDecision(ignore_key) == 1) { Debug.out("Authentication for " + realm + "/" + target + "/" + details + " ignored as told not to ask again"); sem.release(); return; } shell = ShellFactory.createMainShell(SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL); Utils.setShellIcon(shell); Messages.setLanguageText(shell, "authenticator.title"); GridLayout layout = new GridLayout(); layout.numColumns = 3; shell.setLayout(layout); GridData gridData; // realm Label realm_label = new Label(shell, SWT.NULL); Messages.setLanguageText(realm_label, "authenticator.realm"); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 1; realm_label.setLayoutData(gridData); Label realm_value = new Label(shell, SWT.NULL); realm_value.setText(realm.replaceAll("&", "&&")); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 2; realm_value.setLayoutData(gridData); // target Label target_label = new Label(shell, SWT.NULL); Messages.setLanguageText(target_label, is_tracker ? "authenticator.tracker" : "authenticator.location"); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 1; target_label.setLayoutData(gridData); Label target_value = new Label(shell, SWT.NULL); target_value.setText(target.replaceAll("&", "&&")); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 2; target_value.setLayoutData(gridData); if (details != null) { Label details_label = new Label(shell, SWT.NULL); Messages.setLanguageText(details_label, is_tracker ? "authenticator.torrent" : "authenticator.details"); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 1; details_label.setLayoutData(gridData); Label details_value = new Label(shell, SWT.NULL); details_value.setText(details.replaceAll("&", "&&")); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 2; details_value.setLayoutData(gridData); } // user Label user_label = new Label(shell, SWT.NULL); Messages.setLanguageText(user_label, "authenticator.user"); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 1; user_label.setLayoutData(gridData); final Text user_value = new Text(shell, SWT.BORDER); user_value.setText(""); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 2; user_value.setLayoutData(gridData); user_value.addListener(SWT.Modify, new Listener() { public void handleEvent(Event event) { username = user_value.getText(); } }); // password Label password_label = new Label(shell, SWT.NULL); Messages.setLanguageText(password_label, "authenticator.password"); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 1; password_label.setLayoutData(gridData); final Text password_value = new Text(shell, SWT.BORDER); password_value.setEchoChar('*'); password_value.setText(""); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 2; password_value.setLayoutData(gridData); password_value.addListener(SWT.Modify, new Listener() { public void handleEvent(Event event) { password = password_value.getText(); } }); // persist Label blank_label = new Label(shell, SWT.NULL); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 1; blank_label.setLayoutData(gridData); final Button checkBox = new Button(shell, SWT.CHECK); checkBox.setText(MessageText.getString("authenticator.savepassword")); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 1; checkBox.setLayoutData(gridData); checkBox.addListener(SWT.Selection, new Listener() { public void handleEvent(Event e) { persist = checkBox.getSelection(); } }); final Button dontAsk = new Button(shell, SWT.CHECK); dontAsk.setText(MessageText.getString("general.dont.ask.again")); gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 1; dontAsk.setLayoutData(gridData); dontAsk.addListener(SWT.Selection, new Listener() { public void handleEvent(Event e) { RememberedDecisionsManager.setRemembered(ignore_key, dontAsk.getSelection() ? 1 : 0); } }); // line Label labelSeparator = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL); gridData = new GridData(GridData.FILL_HORIZONTAL); gridData.horizontalSpan = 3; labelSeparator.setLayoutData(gridData); // buttons new Label(shell, SWT.NULL); Button bOk = new Button(shell, SWT.PUSH); Messages.setLanguageText(bOk, "Button.ok"); gridData = new GridData( GridData.FILL_HORIZONTAL | GridData.HORIZONTAL_ALIGN_END | GridData.HORIZONTAL_ALIGN_FILL); gridData.grabExcessHorizontalSpace = true; gridData.widthHint = 70; bOk.setLayoutData(gridData); bOk.addListener(SWT.Selection, new Listener() { public void handleEvent(Event e) { close(true); } }); Button bCancel = new Button(shell, SWT.PUSH); Messages.setLanguageText(bCancel, "Button.cancel"); gridData = new GridData(GridData.HORIZONTAL_ALIGN_END); gridData.grabExcessHorizontalSpace = false; gridData.widthHint = 70; bCancel.setLayoutData(gridData); bCancel.addListener(SWT.Selection, new Listener() { public void handleEvent(Event e) { close(false); } }); shell.setDefaultButton(bOk); shell.addListener(SWT.Traverse, new Listener() { public void handleEvent(Event e) { if (e.character == SWT.ESC) { close(false); } } }); shell.pack(); Utils.centreWindow(shell); shell.open(); } protected void close(boolean ok) { if (ok) { if (username == null) { username = ""; } if (password == null) { password = ""; } } else { username = null; password = null; } shell.dispose(); sem.release(); } protected String getUsername() { return (username); } protected String getPassword() { return (password); } protected boolean savePassword() { return (persist); } } protected class authCache { private String key; private PasswordAuthentication auth; private boolean persist; private int life = 5; private boolean succeeded; protected authCache(String _key, PasswordAuthentication _auth, boolean _persist) { key = _key; auth = _auth; persist = _persist; } protected String getKey() { return (key); } protected boolean isPersistent() { return (persist); } protected void setOutcome(boolean success) { if (success) { succeeded = true; } else { if (persist) { persist = false; saveAuthCache(); } if (!succeeded) { auth = null; } } } protected PasswordAuthentication getAuth() { if (succeeded) { return (auth); } life--; if (life >= 0) { return (auth); } if (persist) { persist = false; saveAuthCache(); } return (null); } } }