| commit | author | age | ||
| 2a4fb8 | 1 | /* |
| U | 2 | http-realm - Authentication Extensions to jdk.httpserver |
| 3 | Copyright (C) 2021 Ulrich Hilger | |
| 4 | ||
| 5 | This program is free software: you can redistribute it and/or modify | |
| 6 | it under the terms of the GNU Affero General Public License as | |
| 7 | published by the Free Software Foundation, either version 3 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | GNU Affero General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Affero General Public License | |
| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. | |
| 17 | */ | |
| 18 | package de.uhilger.httpserver.auth.realm; | |
| 19 | ||
| 20 | import java.io.BufferedReader; | |
| 21 | import java.io.File; | |
| 22 | import java.io.FileReader; | |
| 23 | import java.io.IOException; | |
| 24 | import java.security.NoSuchAlgorithmException; | |
| 25 | import java.util.ArrayList; | |
| 26 | import java.util.HashMap; | |
| 27 | import java.util.List; | |
| 28 | import java.util.Map; | |
| 29 | import java.util.logging.Level; | |
| 30 | import java.util.logging.Logger; | |
| 31 | ||
| 32 | /** | |
| 33 | * Eine einfache Implementierung der Schnittstelle Realm, die | |
| 34 | * Benutzerinformationen aus einer Datei liest. Die Datei ist dabei | |
| 35 | * wie folgt aufgebaut. | |
| 36 | * | |
| 37 | * test=test,testRolle | |
| 38 | * ulrich=ulrich,testRolle,andereRolle | |
| 39 | * | |
| 40 | * Der erste Eintrag nach dem Gleichheitszeichen ist das Passwort, die restlichen | |
| 41 | * Eintrage sind Rollen. | |
| 42 | * | |
| 43 | * @author Ulrich Hilger | |
| 44 | * @version 1, 03.06.2021 | |
| 45 | */ | |
| 46 | public class SimpleRealm implements Realm { | |
| 47 | ||
| 48 | private static final Logger logger = Logger.getLogger(SimpleRealm.class.getName()); | |
| 49 | ||
| 50 | public static final String LIST_INDICATOR = "="; | |
| 51 | public static final String ROLE_SEPARATOR = ","; | |
| 52 | public static final String COMMENT_INDICATOR = "#"; | |
| 53 | ||
| 54 | private String name; | |
| 55 | private final Map<String, User> users; | |
| 56 | private final Map<String, List> userRoles; | |
| 57 | ||
| 58 | public SimpleRealm() { | |
| 59 | users = new HashMap<>(); | |
| 60 | userRoles = new HashMap<>(); | |
| 61 | } | |
| 62 | ||
| 63 | public void setName(String name) { | |
| 64 | this.name = name; | |
| 65 | } | |
| 66 | ||
| 67 | public void readFromFile(File file) throws IOException { | |
| 68 | BufferedReader r = new BufferedReader(new FileReader(file)); | |
| 69 | String line = r.readLine(); | |
| 70 | while(line != null) { | |
| 71 | parse(line); | |
| 72 | line = r.readLine(); | |
| 73 | } | |
| 74 | r.close(); | |
| 75 | } | |
| 76 | ||
| 77 | private void parse(String line) { | |
| 78 | if(!line.startsWith(COMMENT_INDICATOR)) { | |
| 79 | String[] teile = line.split(LIST_INDICATOR); | |
| 80 | String[] rollen = teile[1].split(ROLE_SEPARATOR); | |
| 81 | String userId = teile[0]; | |
| 82 | User user = new User(); | |
| 83 | user.setName(userId); | |
| 84 | user.setPassword(rollen[0]); | |
| 85 | try { | |
| 86 | Encoder encoder = new Encoder(); | |
| 87 | String hex = encoder.bytesToHex(encoder.encode(rollen[0])); | |
| 88 | logger.fine(hex); | |
| 89 | } catch (NoSuchAlgorithmException ex) { | |
| 90 | logger.log(Level.SEVERE, null, ex); | |
| 91 | } | |
| 92 | ArrayList rollenListe = new ArrayList(); | |
| 93 | for(int i = 1; i < rollen.length; i++) { | |
| 94 | rollenListe.add(rollen[i]); | |
| 95 | } | |
| 96 | users.put(userId, user); | |
| 97 | userRoles.put(userId, rollenListe); | |
| 98 | } | |
| 99 | } | |
| 100 | ||
| 101 | /* ------------ Realm implementation -------------- */ | |
| 102 | ||
| 103 | @Override | |
| 104 | public boolean isValid(String userId, String kennwort) { | |
| 105 | Object o = users.get(userId); | |
| 106 | if(o instanceof User) { | |
| 107 | User user = (User) o; | |
| 108 | return user.getPassword().equals(kennwort); | |
| 109 | } else { | |
| 110 | return false; | |
| 111 | } | |
| 112 | } | |
| 113 | ||
| 114 | @Override | |
| 115 | public boolean hasRole(String userId, String rollenId) { | |
| 116 | Object o = userRoles.get(userId); | |
| 117 | if(o instanceof List) { | |
| 118 | List roles = (List) o; | |
| 119 | return roles.contains(rollenId); | |
| 120 | } else { | |
| 121 | return false; | |
| 122 | } | |
| 123 | } | |
| 124 | ||
| 125 | @Override | |
| 126 | public String getName() { | |
| 127 | return name; | |
| 128 | } | |
| 129 | ||
| 130 | } | |
