| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.kerby.kerberos.tool.kadmin.executor; |
| |
| import org.apache.kerby.config.Config; |
| import org.apache.kerby.kerberos.kerb.identity.KrbIdentity; |
| import org.apache.kerby.kerberos.kerb.identity.backend.IdentityBackend; |
| import org.apache.kerby.kerberos.kerb.keytab.Keytab; |
| import org.apache.kerby.kerberos.kerb.keytab.KeytabEntry; |
| import org.apache.kerby.kerberos.kerb.spec.KerberosTime; |
| import org.apache.kerby.kerberos.kerb.spec.base.EncryptionKey; |
| import org.apache.kerby.kerberos.kerb.spec.base.EncryptionType; |
| import org.apache.kerby.kerberos.kerb.spec.base.PrincipalName; |
| import org.apache.kerby.kerberos.tool.kadmin.tool.KadminTool; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| public class KeytabAddExecutor implements KadminCommandExecutor{ |
| private static final String USAGE = |
| "Usage: ktadd [-k[eytab] keytab] [-q] [-e keysaltlist] [-norandkey] [principal | -glob princ-exp] [...]"; |
| |
| private static final String DEFAULT_KEYTAB_FILE_LOCATION = "/etc/krb5.keytab"; |
| |
| private Config backendConfig; |
| |
| public KeytabAddExecutor(Config backendConfig) { |
| this.backendConfig = backendConfig; |
| } |
| |
| @Override |
| public void execute(String input) { |
| String[] commands = input.split(" "); |
| |
| String principal = null; |
| String keytabFileLocation = null; |
| |
| //Since commands[0] is ktadd, the initial index is 1. |
| int index = 1; |
| while (index < commands.length) { |
| String command = commands[index]; |
| if (command.equals("-k")) { |
| index++; |
| if (index >= commands.length) { |
| System.err.println(USAGE); |
| return; |
| } |
| keytabFileLocation = commands[index].trim(); |
| |
| } else if (!command.startsWith("-")){ |
| principal = command; |
| } |
| index++; |
| } |
| |
| if (keytabFileLocation == null) { |
| keytabFileLocation = DEFAULT_KEYTAB_FILE_LOCATION; |
| } |
| File keytabFile = new File(keytabFileLocation); |
| |
| addEntryToKeytab(keytabFile, principal); |
| } |
| |
| private void addEntryToKeytab(File keytabFile, String principalName) { |
| IdentityBackend backend = KadminTool.getBackend(backendConfig); |
| |
| //Get Identity |
| KrbIdentity identity = backend.getIdentity(principalName); |
| if (identity == null) { |
| System.err.println("Can not find the identity for pincipal " + |
| principalName + "."); |
| return; |
| } |
| |
| StringBuffer resultSB = new StringBuffer(); |
| Keytab keytab = loadKeytab(keytabFile); |
| |
| //Add principal to keytab. |
| PrincipalName principal = identity.getPrincipal(); |
| KerberosTime timestamp = new KerberosTime(); |
| for (EncryptionType encType : identity.getKeys().keySet()) { |
| EncryptionKey ekey = identity.getKeys().get(encType); |
| int keyVersion = ekey.getKvno(); |
| keytab.addEntry(new KeytabEntry(principal, timestamp, keyVersion, ekey)); |
| resultSB.append("Entry for principal " + principalName + |
| " with kvno " + keyVersion + ", encryption type " + |
| encType.getName() + " added to keytab " + |
| keytabFile.getAbsolutePath() + "\n"); |
| } |
| |
| //Store the keytab |
| try { |
| keytab.store(keytabFile); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| System.out.println(resultSB.toString()); |
| } |
| |
| private Keytab loadKeytab(File keytabFile) { |
| try { |
| if (!keytabFile.exists()) { |
| keytabFile.createNewFile(); |
| return new Keytab(); |
| } |
| |
| return Keytab.loadKeytab(keytabFile); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| return new Keytab(); |
| } |
| } |
| |
| } |