internal/auth/ConsoleCallbackHandler.java

   1 package org.argeo.cms.internal.auth;
   2
   3 import java.io.Console;
   4 import java.io.IOException;
   5 import java.io.PrintWriter;
   6 import java.util.Arrays;
   7
   8 import javax.security.auth.callback.Callback;
   9 import javax.security.auth.callback.CallbackHandler;
  10 import javax.security.auth.callback.NameCallback;
  11 import javax.security.auth.callback.PasswordCallback;
  12 import javax.security.auth.callback.TextOutputCallback;
  13 import javax.security.auth.callback.UnsupportedCallbackException;
  14
  15 /** Callback handler to be used with a command line UI. */
  16 public class ConsoleCallbackHandler implements CallbackHandler {
  17
  18         @Override
  19         public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
  20                 Console console = System.console();
  21                 if (console == null)
  22                         throw new IllegalStateException("No console available");
  23
  24                 PrintWriter writer = console.writer();
  25                 for (int i = 0; i < callbacks.length; i++) {
  26                         if (callbacks[i] instanceof TextOutputCallback) {
  27                                 TextOutputCallback callback = (TextOutputCallback) callbacks[i];
  28                                 writer.write(callback.getMessage());
  29                         } else if (callbacks[i] instanceof NameCallback) {
  30                                 NameCallback callback = (NameCallback) callbacks[i];
  31                                 writer.write(callback.getPrompt());
  32                                 if (callback.getDefaultName() != null)
  33                                         writer.write(" (" + callback.getDefaultName() + ")");
  34                                 writer.write(" : ");
  35                                 String answer = console.readLine();
  36                                 if (callback.getDefaultName() != null && answer.trim().equals(""))
  37                                         callback.setName(callback.getDefaultName());
  38                                 else
  39                                         callback.setName(answer);
  40                         } else if (callbacks[i] instanceof PasswordCallback) {
  41                                 PasswordCallback callback = (PasswordCallback) callbacks[i];
  42                                 writer.write(callback.getPrompt());
  43                                 char[] answer = console.readPassword();
  44                                 callback.setPassword(answer);
  45                                 Arrays.fill(answer, ' ');
  46                         }
  47 //                      else if (callbacks[i] instanceof LocaleChoice) {
  48 //                              LocaleChoice callback = (LocaleChoice) callbacks[i];
  49 //                              writer.write("Language");
  50 //                              writer.write("\n");
  51 //                              for (int j = 0; j < callback.getLocales().size(); j++) {
  52 //                                      Locale locale = callback.getLocales().get(j);
  53 //                                      writer.print(j + " : " + locale.getDisplayName() + "\n");
  54 //                              }
  55 //                              writer.write("(" + callback.getDefaultIndex() + ") : ");
  56 //                              String answer = console.readLine();
  57 //                              if (answer.trim().equals(""))
  58 //                                      callback.setSelectedIndex(callback.getDefaultIndex());
  59 //                              else
  60 //                                      callback.setSelectedIndex(new Integer(answer.trim()));
  61 //                      }
  62                 }
  63         }
  64
  65 }