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+/* ConsoleCallbackHandler.java --
+ Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath 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, or (at
+your option) any later version.
+
+GNU Classpath 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.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.javax.security.auth.callback;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.io.PrintStream;
+
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.StringTokenizer;
+import java.util.TreeSet;
+
+import javax.security.auth.callback.ChoiceCallback;
+import javax.security.auth.callback.ConfirmationCallback;
+import javax.security.auth.callback.LanguageCallback;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import javax.security.auth.callback.TextInputCallback;
+import javax.security.auth.callback.TextOutputCallback;
+
+/**
+ * An implementation of {@link CallbackHandler} that reads and writes
+ * information to and from <code>System.in</code> and <code>System.out</code>.
+ */
+public class ConsoleCallbackHandler extends AbstractCallbackHandler
+{
+
+ // Fields.
+ // -------------------------------------------------------------------------
+
+ private final PrintStream out;
+
+ // Constructors.
+ // -------------------------------------------------------------------------
+
+ public ConsoleCallbackHandler()
+ {
+ this (System.out);
+ }
+
+ public ConsoleCallbackHandler (final PrintStream out)
+ {
+ super ("CONSOLE");
+ this.out = out;
+ }
+
+ // Instance methods.
+ // -------------------------------------------------------------------------
+
+ protected void handleChoice(ChoiceCallback c) throws IOException
+ {
+ BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+ out.println(c.getPrompt());
+ out.print('(');
+ String[] choices = c.getChoices();
+ for (int i = 0; i < choices.length; i++)
+ {
+ out.print(choices[i]);
+ if (i != choices.length - 1)
+ out.print(", ");
+ }
+ out.print(") ");
+ if (c.getDefaultChoice() >= 0 && c.getDefaultChoice() < choices.length)
+ {
+ out.print('[');
+ out.print(choices[c.getDefaultChoice()]);
+ out.print("] ");
+ }
+ String reply = in.readLine();
+ if (reply == null || reply.length() == 0)
+ {
+ c.setSelectedIndex(c.getDefaultChoice());
+ return;
+ }
+ if (!c.allowMultipleSelections())
+ {
+ for (int i = 0; i < choices.length; i++)
+ {
+ if (reply.trim().equals(choices[i]))
+ {
+ c.setSelectedIndex(i);
+ return;
+ }
+ }
+ c.setSelectedIndex(c.getDefaultChoice());
+ }
+ else
+ {
+ TreeSet indices = new TreeSet();
+ StringTokenizer tok = new StringTokenizer(reply, ",");
+ String[] replies = new String[tok.countTokens()];
+ int idx = 0;
+ while (tok.hasMoreTokens())
+ {
+ replies[idx++] = tok.nextToken().trim();
+ }
+ for (int i = 0; i < choices.length; i++)
+ for (int j = 0; j < replies.length; i++)
+ {
+ if (choices[i].equals(replies[j]))
+ {
+ indices.add(Integer.valueOf(i));
+ }
+ }
+ if (indices.size() == 0)
+ c.setSelectedIndex(c.getDefaultChoice());
+ else
+ {
+ int[] ii = new int[indices.size()];
+ int i = 0;
+ for (Iterator it = indices.iterator(); it.hasNext(); )
+ ii[i++] = ((Integer) it.next()).intValue();
+ c.setSelectedIndexes(ii);
+ }
+ }
+ }
+
+ protected void handleConfirmation(ConfirmationCallback c) throws IOException
+ {
+ BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+ if (c.getPrompt() != null)
+ out.print(c.getPrompt());
+
+ String[] choices = null;
+ int[] values = null;
+ switch (c.getOptionType())
+ {
+ case ConfirmationCallback.OK_CANCEL_OPTION:
+ out.print(messages.getString("callback.okCancel"));
+ choices = new String[] {
+ messages.getString("callback.ok"),
+ messages.getString("callback.cancel"),
+ messages.getString("callback.shortOk"),
+ messages.getString("callback.shortCancel")
+ };
+ values = new int[] {
+ ConfirmationCallback.OK, ConfirmationCallback.CANCEL,
+ ConfirmationCallback.OK, ConfirmationCallback.CANCEL
+ };
+ break;
+
+ case ConfirmationCallback.YES_NO_CANCEL_OPTION:
+ out.print(messages.getString("callback.yesNoCancel"));
+ choices = new String[] {
+ messages.getString("callback.yes"),
+ messages.getString("callback.no"),
+ messages.getString("callback.cancel"),
+ messages.getString("callback.shortYes"),
+ messages.getString("callback.shortNo"),
+ messages.getString("callback.shortCancel")
+ };
+ values = new int[] {
+ ConfirmationCallback.YES, ConfirmationCallback.NO,
+ ConfirmationCallback.CANCEL, ConfirmationCallback.YES,
+ ConfirmationCallback.NO, ConfirmationCallback.CANCEL
+ };
+ break;
+
+ case ConfirmationCallback.YES_NO_OPTION:
+ out.print(messages.getString("callback.yesNo"));
+ choices = new String[] { messages.getString("callback.yes"),
+ messages.getString("callback.no"),
+ messages.getString("callback.shortYes"),
+ messages.getString("callback.shortNo") };
+ values = new int[] { ConfirmationCallback.YES,
+ ConfirmationCallback.NO,
+ ConfirmationCallback.YES,
+ ConfirmationCallback.NO };
+ int defaultOption = c.getDefaultOption();
+ if (defaultOption > -1 && defaultOption < choices.length)
+ {
+ out.print("[");
+ out.print(choices[defaultOption]);
+ out.print("] ");
+ }
+ break;
+
+ case ConfirmationCallback.UNSPECIFIED_OPTION:
+ choices = c.getOptions();
+ values = new int[choices.length];
+ for (int i = 0; i < values.length; i++)
+ values[i] = i;
+ out.print('(');
+ for (int i = 0; i < choices.length; i++)
+ {
+ out.print(choices[i]);
+ if (i != choices.length - 1)
+ out.print(", ");
+ }
+ out.print(") [");
+ out.print(choices[c.getDefaultOption()]);
+ out.print("] ");
+ break;
+
+ default:
+ throw new IllegalArgumentException();
+ }
+ String reply = in.readLine();
+ if (reply == null)
+ {
+ c.setSelectedIndex(c.getDefaultOption());
+ return;
+ }
+ reply = reply.trim();
+ for (int i = 0; i < choices.length; i++)
+ if (reply.equalsIgnoreCase(choices[i]))
+ {
+ c.setSelectedIndex(values[i]);
+ return;
+ }
+ c.setSelectedIndex(c.getDefaultOption());
+ }
+
+ protected void handleLanguage(LanguageCallback c) throws IOException
+ {
+ BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+ out.print(messages.getString("callback.language"));
+ String reply = null;
+ reply = in.readLine();
+ if (reply == null)
+ {
+ c.setLocale(Locale.getDefault());
+ }
+ else
+ {
+ c.setLocale(new Locale(reply.trim()));
+ }
+ }
+
+ protected void handleName(NameCallback c) throws IOException
+ {
+ BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+ out.print(c.getPrompt());
+ String name = in.readLine();
+ if (name != null)
+ c.setName(name.trim());
+ }
+
+ protected void handlePassword(PasswordCallback c) throws IOException
+ {
+ out.print(c.getPrompt());
+ BufferedReader in =
+ new BufferedReader(new InputStreamReader(System.in));
+ String pass = in.readLine();
+ c.setPassword(pass.toCharArray());
+ }
+
+ protected void handleTextInput(TextInputCallback c) throws IOException
+ {
+ BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+ out.print(c.getPrompt());
+ String text = in.readLine();
+ if (text != null)
+ c.setText(text);
+ }
+
+ protected void handleTextOutput(TextOutputCallback c)
+ {
+ out.print(c.getMessage());
+ }
+}
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