/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* 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 version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.satsa.acl;
import com.sun.midp.lcdui.DisplayEventHandler;
import com.sun.midp.lcdui.DisplayEventHandlerFactory;
import com.sun.midp.security.SecurityToken;
import com.sun.midp.i18n.Resource;
import com.sun.midp.i18n.ResourceConstants;
import com.sun.midp.midlet.MIDletEventConsumer;
import com.sun.midp.midlet.MIDletPeer;
import javax.microedition.lcdui.*;
/** Implements PIN entry dialog. */
public class PINEntryDialog implements CommandListener {
/** Answer that indicates that the dialog was cancelled. */
private static final int CANCELLED = -1;
/** Answer that indicates successful completion. */
private static final int CONFIRMED = 1;
/** Caches the display manager reference. */
private DisplayEventHandler displayEventHandler;
/** Command object for "OK" command. */
private Command okCmd =
new Command(Resource.getString(ResourceConstants.OK),
Command.OK, 1);
/** Command object for "Cancel" command. */
private Command cancelCmd =
new Command(Resource.getString(ResourceConstants.CANCEL),
Command.CANCEL, 1);
/** Holds the preempt token so the form can end. */
private Object preemptToken;
/** Holds the answer to the security question. */
private int answer = CANCELLED;
/** PIN entry text field. */
private TextField tf1;
/** PIN entry text field. */
private TextField tf2;
/** Attributes of the 1st PIN. */
private PINAttributes pin1;
/** Attributes of the 2nd PIN. */
private PINAttributes pin2;
/** 1st PIN data. */
private byte[] data1;
/** 2nd PIN data. */
private byte[] data2;
/**
* Construct PIN dialog.
*
* @param token security token with the permission to peempt the
* foreground display
* @param action PIN entry operation identifier.
* @param attr1 1st PIN attributes.
* @param attr2 2nd PIN attributes.
* @exception InterruptedException if another thread interrupts the
* calling thread while this method is waiting to preempt the
* display.
*/
public PINEntryDialog(SecurityToken token, int action,
PINAttributes attr1, PINAttributes attr2)
throws InterruptedException {
String title = null;
String label1 = attr1.label;
String label2 = null;
pin1 = attr1;
pin2 = null;
switch (action) {
case ACLPermissions.CMD_VERIFY: {
// "PIN verification"
title = Resource.getString(ResourceConstants.
JSR177_PINDIALOG_TITLE_VERIFY);
break;
}
case ACLPermissions.CMD_CHANGE: {
// "Change PIN"
title = Resource.getString(ResourceConstants.
JSR177_PINDIALOG_TITLE_CHANGE);
// "New value" -> "Enter new PIN"
label2 = Resource.getString(ResourceConstants.
JSR177_PINDIALOG_ENTERPIN);
pin2 = attr1;
break;
}
case ACLPermissions.CMD_DISABLE: {
// "Disable PIN"
title = Resource.getString(ResourceConstants.
JSR177_PINDIALOG_TITLE_DISABLE);
break;
}
case ACLPermissions.CMD_ENABLE: {
// "Enable PIN";
title = Resource.getString(ResourceConstants.
JSR177_PINDIALOG_TITLE_ENABLE);
break;
}
case ACLPermissions.CMD_UNBLOCK: {
// "Unblock PIN"
title = Resource.getString(ResourceConstants.
JSR177_PINDIALOG_TITLE_UNBLOCK);
label1 = attr2.label;
label2 = attr1.label + " - " +
// "new value"
Resource.getString(ResourceConstants.
JSR177_PINDIALOG_NEWVALUE);
pin1 = attr2;
pin2 = attr1;
break;
}
}
Form form = new Form(title);
int flags = TextField.PASSWORD;
if (pin1.isNumeric()) {
flags |= TextField.NUMERIC;
}
tf1 = new TextField(label1, "", pin1.getMaxLength(), flags);
form.append(tf1);
if (pin2 != null) {
flags = TextField.SENSITIVE | TextField.NON_PREDICTIVE;
if (pin2.isNumeric()) {
flags |= TextField.NUMERIC;
}
tf2 = new TextField(label2, "", pin2.getMaxLength(), flags);
form.append(tf2);
}
form.addCommand(cancelCmd);
form.addCommand(okCmd);
form.setCommandListener(this);
if (displayEventHandler == null) {
displayEventHandler = DisplayEventHandlerFactory
.getDisplayEventHandler(token);
}
preemptToken = displayEventHandler.preemptDisplay(form, true);
}
/**
* Waits for the user's answer.
* @return user's answer
*/
public int waitForAnswer() {
synchronized (this) {
if (preemptToken == null) {
return CANCELLED;
}
try {
wait();
} catch (Throwable t) {
return CANCELLED;
}
return answer;
}
}
/**
* Sets the user's answer and notifies waitForAnswer and
* ends the form.
* @param theAnswer user's answer or CANCEL if system cancelled the
* screen
*/
private void setAnswer(int theAnswer) {
synchronized (this) {
answer = theAnswer;
displayEventHandler.donePreempting(preemptToken);
notify();
}
}
/**
* Respond to a command issued on form.
* @param c command activiated by the user
* @param s the Displayable the command was on.
*/
public void commandAction(Command c, Displayable s) {
if (c == okCmd) {
if (! checkInput()) {
return;
}
setAnswer(CONFIRMED);
} else {
setAnswer(CANCELLED);
}
}
/**
* Verifies that the values entered are acceptable.
* @return true if the values entered are acceptable.
*/
private boolean checkInput() {
if (tf1.getString().trim().equals("")) {
return false;
}
data1 = pin1.transform(tf1.getString());
if (data1 == null) {
// PIN can't be formatted, pass empty PIN to update counter
data1 = new byte[8];
}
if (pin2 != null) {
data2 = pin2.transform(tf2.getString());
if (data2 == null) {
tf2.setString("");
return false;
}
} else {
data2 = null;
}
return true;
}
/**
* Get the entered values.
* @return null if PIN entry was cancelled by user, otherwise an array
* containing PIN value(s).
*/
public Object[] getPINs() {
if (answer == CANCELLED) {
return null;
}
if (pin2 == null) {
return new Object[] {data1};
}
return new Object[] {data1, data2};
}
}
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