123:   public boolean login() throws LoginException {
124:     if (iCallbackHandler == null)
125:       throw new LoginException("error: no CallbackHandler available");
126:
127:     Callback[] cb = new Callback[2];
128:     cb[0] = new NameCallback("username: ");
129:     cb[1] = new PasswordCallback("password: ",false);
130:
131:     try {
132:       iCallbackHandler.handle(cb);
133:       iUserName = ((NameCallback)cb[0]).getName();
134:
135:       char[] tmpPassword = ((PasswordCallback)cb[1]).getPassword();
136:       if (tmpPassword == null)
137:         tmpPassword = new char[0];
138:       iPassword = new char[tmpPassword.length];
139:       System.arraycopy(tmpPassword,0,iPassword,0,tmpPassword.length);
140:       ((PasswordCallback)cb[1]).clearPassword();
141:
142:     } catch (IOException ioe) {
143:       throw new LoginException(ioe.toString());
144:     } catch (UnsupportedCallbackException uce) {
145:       throw new LoginException(uce.getCallback().toString());
146:     }
147:
148:     printDebug(DEBUG_USERNAME);
149:     printDebug(DEBUG_PASSWORD);
150:
151:     if (verifyPassword()) {
152:       printDebug(DEBUG_AUTH);
153:       iAuthOk = true;
154:       return true;
155:     } else {
156:       printDebug(DEBUG_NOAUTH);
157:       clearState();
158:       throw new FailedLoginException();
159:     }
160:   }
161:
162:   /////////////////////////////////////////////////////////
262:
263:   private boolean verifyPassword() throws LoginException {
264:     int rc = -1;
265:     try {
266:       String cmd;
267:       if (iDebugNative)
268:         cmd = NATIVE_CMD+" -d "+iUserName+" "+iPassword;
269:       else
270:         cmd = NATIVE_CMD+" "+iUserName+" "+iPassword;
271:       Process pr = Runtime.getRuntime().exec(cmd);
272:       cmd = null;
273:       pr.waitFor();
274:       rc = pr.exitValue();
275:       if (rc == 0) {
276:         // add UnixPrincipal
277:         iPrincipals = new HashSet();
278:         iGroups     = new HashSet();
279:         iPrimaryGroup = true;
280:         UnixPrincipal up = new UnixPrincipal(iUserName);
281:         iPrincipals.add(up);
282:
283:         //add UnixNumericUserPrincipal/UnixNumericGroupPrincipal
284:         InputStreamReader isr = new InputStreamReader(pr.getInputStream());
285:         BufferedReader input  = new BufferedReader(isr);
286:         while (true) {
287:           String line = input.readLine();
288:           if (line == null)
289:             break;
290:           else
291:             addPrincipal(line);
292:         }
293:         input.close();
294:       }
305:       input.close();
306:       }
307:     } catch (Exception e) {
308:       throw new LoginException(e.toString());
309:     }
310:     return rc == 0;
311:   }