org.argeo.cms/src/org/argeo/cms/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 import org.argeo.cms.CmsException;
  16
  17 /** Callback handler to be used with a command line UI. */
  18 public class ConsoleCallbackHandler implements CallbackHandler {
  19
  20         @Override
  21         public void handle(Callback[] callbacks) throws IOException,
  22                         UnsupportedCallbackException {
  23                 Console console = System.console();
  24                 if (console == null)
  25                         throw new CmsException("No console available");
  26
  27                 PrintWriter writer = console.writer();
  28                 for (int i = 0; i < callbacks.length; i++) {
  29                         if (callbacks[i] instanceof TextOutputCallback) {
  30                                 TextOutputCallback callback = (TextOutputCallback) callbacks[i];
  31                                 writer.write(callback.getMessage());
  32                         } else if (callbacks[i] instanceof NameCallback) {
  33                                 NameCallback callback = (NameCallback) callbacks[i];
  34                                 writer.write(callback.getPrompt());
  35                                 if (callback.getDefaultName() != null)
  36                                         writer.write(" (" + callback.getDefaultName() + ")");
  37                                 writer.write(" : ");
  38                                 String answer = console.readLine();
  39                                 if (callback.getDefaultName() != null
  40                                                 && answer.trim().equals(""))
  41                                         callback.setName(callback.getDefaultName());
  42                                 else
  43                                         callback.setName(answer);
  44                         } else if (callbacks[i] instanceof PasswordCallback) {
  45                                 PasswordCallback callback = (PasswordCallback) callbacks[i];
  46                                 writer.write(callback.getPrompt());
  47                                 char[] answer = console.readPassword();
  48                                 callback.setPassword(answer);
  49                                 Arrays.fill(answer, ' ');
  50                         }
  51 //                      else if (callbacks[i] instanceof LocaleChoice) {
  52 //                              LocaleChoice callback = (LocaleChoice) callbacks[i];
  53 //                              writer.write("Language");
  54 //                              writer.write("\n");
  55 //                              for (int j = 0; j < callback.getLocales().size(); j++) {
  56 //                                      Locale locale = callback.getLocales().get(j);
  57 //                                      writer.print(j + " : " + locale.getDisplayName() + "\n");
  58 //                              }
  59 //                              writer.write("(" + callback.getDefaultIndex() + ") : ");
  60 //                              String answer = console.readLine();
  61 //                              if (answer.trim().equals(""))
  62 //                                      callback.setSelectedIndex(callback.getDefaultIndex());
  63 //                              else
  64 //                                      callback.setSelectedIndex(new Integer(answer.trim()));
  65 //                      }
  66                 }
  67         }
  68
  69 }