aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/web/server/model/DataServiceImpl.java
blob: eb466694a00c4ca3a5888d280f20099fb4749b3e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
/*
 * Copyright 2013 Anton Tananaev (anton.tananaev@gmail.com)
 *
 * Licensed 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.traccar.web.server.model;

import java.util.Date;
import java.util.LinkedList;
import java.util.List;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.Query;
import javax.persistence.TypedQuery;
import javax.servlet.ServletException;
import javax.servlet.http.HttpSession;

import org.traccar.web.client.model.DataService;
import org.traccar.web.shared.model.ApplicationSettings;
import org.traccar.web.shared.model.Device;
import org.traccar.web.shared.model.Position;
import org.traccar.web.shared.model.User;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;

public class DataServiceImpl extends RemoteServiceServlet implements DataService {

    private static final long serialVersionUID = 1;

    private static final String PERSISTENCE_DATASTORE = "java:/DefaultDS";
    private static final String PERSISTENCE_UNIT_DEBUG = "debug";
    private static final String PERSISTENCE_UNIT_RELEASE = "release";
    private static final String ATTRIBUTE_USER = "traccar.user";
    private static final String ATTRIBUTE_ENTITYMANAGER = "traccar.entitymanager";

    private EntityManagerFactory entityManagerFactory;

    @Override
    public void init() throws ServletException {
        super.init();

        String persistenceUnit;
        try {
            Context context = new InitialContext();
            context.lookup(PERSISTENCE_DATASTORE);
            persistenceUnit = PERSISTENCE_UNIT_RELEASE;
        } catch (NamingException e) {
            persistenceUnit = PERSISTENCE_UNIT_DEBUG;
        }

        entityManagerFactory = Persistence.createEntityManagerFactory(persistenceUnit);

        // Create Administrator account
        EntityManager entityManager = getServletEntityManager();
        TypedQuery<User> query = entityManager.createQuery("SELECT x FROM User x WHERE x.login = 'admin'", User.class);
        List<User> results = query.getResultList();
        if (results.isEmpty()) {
            User user = new User();
            user.setLogin("admin");
            user.setPassword("admin");
            user.setAdmin(true);
            createUser(entityManager, user);
        }
    }

    private EntityManager servletEntityManager;

    private EntityManager getServletEntityManager() {
        if (servletEntityManager == null) {
            servletEntityManager = entityManagerFactory.createEntityManager();
        }
        return servletEntityManager;
    }

    private EntityManager getSessionEntityManager() {
        HttpSession session = getThreadLocalRequest().getSession();
        EntityManager entityManager = (EntityManager) session.getAttribute(ATTRIBUTE_ENTITYMANAGER);
        if (entityManager == null) {
            entityManager = entityManagerFactory.createEntityManager();
            session.setAttribute(ATTRIBUTE_ENTITYMANAGER, entityManager);
        }
        return entityManager;
    }

    private void setSessionUser(User user) {
        HttpSession session = getThreadLocalRequest().getSession();
        if (user != null) {
            session.setAttribute(ATTRIBUTE_USER, user);
        } else {
            session.removeAttribute(ATTRIBUTE_USER);
        }
    }

    private User getSessionUser() {
        HttpSession session = getThreadLocalRequest().getSession();
        return (User) session.getAttribute(ATTRIBUTE_USER);
    }

    @Override
    public User authenticated() {
        return getSessionUser();
    }

    @Override
    public User login(String login, String password) {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            TypedQuery<User> query = entityManager.createQuery(
                    "SELECT x FROM User x WHERE x.login = :login", User.class);
            query.setParameter("login", login);
            List<User> results = query.getResultList();

            if (!results.isEmpty() && password.equals(results.get(0).getPassword())) {
                User user = results.get(0);
                setSessionUser(user);
                return user;
            }
            return null;
        }
    }

    @Override
    public boolean logout() {
        setSessionUser(null);
        return true;
    }

    @Override
    public User register(String login, String password) {
        if (getApplicationSettings().getRegistrationEnabled()) {
            User user = new User();
            user.setLogin(login);
            user.setPassword(password);
            createUser(getSessionEntityManager(), user);
            setSessionUser(user);
            return user;
        } else {
            throw new SecurityException();
        }
    }

    @Override
    public List<User> getUsers() {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            List<User> users = new LinkedList<User>();
            users.addAll(entityManager.createQuery("SELECT x FROM User x", User.class).getResultList());
            return users;
        }
    }

    @Override
    public User addUser(User user) {
        User currentUser = getSessionUser();
        if (user.getLogin().isEmpty() || user.getPassword().isEmpty()) {
            throw new IllegalArgumentException();
        }
        if (currentUser.getAdmin()) {
            EntityManager entityManager = getSessionEntityManager();
            synchronized (entityManager) {
                entityManager.getTransaction().begin();
                try {
                    entityManager.persist(user);
                    entityManager.getTransaction().commit();
                    return user;
                } catch (RuntimeException e) {
                    entityManager.getTransaction().rollback();
                    throw e;
                }
            }
        } else {
            throw new SecurityException();
        }
    }

    @Override
    public User updateUser(User user) {
        User currentUser = getSessionUser();
        if (user.getLogin().isEmpty() || user.getPassword().isEmpty()) {
            throw new IllegalArgumentException();
        }
        if (currentUser.getAdmin() || (currentUser.getId() == user.getId() && !user.getAdmin())) {
            EntityManager entityManager = getSessionEntityManager();
            synchronized (entityManager) {
                entityManager.getTransaction().begin();
                try {
                    // TODO: better solution?
                    if (currentUser.getId() == user.getId()) {
                        currentUser.setLogin(user.getLogin());
                        currentUser.setPassword(user.getPassword());
                        currentUser.setUserSettings(user.getUserSettings());
                        entityManager.merge(currentUser);
                        user = currentUser;
                    } else {
                        // TODO: handle other users
                    }

                    entityManager.getTransaction().commit();
                    setSessionUser(user);
                    return user;
                } catch (RuntimeException e) {
                    entityManager.getTransaction().rollback();
                    throw e;
                }
            }
        } else {
            throw new SecurityException();
        }
    }

    @Override
    public User removeUser(User user) {
        User currentUser = getSessionUser();
        if (currentUser.getAdmin()) {
            EntityManager entityManager = getSessionEntityManager();
            synchronized (entityManager) {
                entityManager.getTransaction().begin();
                try {
                    user = entityManager.merge(user);
                    user.getDevices().clear();
                    entityManager.remove(user);
                    entityManager.getTransaction().commit();
                    return user;
                } catch (RuntimeException e) {
                    entityManager.getTransaction().rollback();
                    throw e;
                }
            }
        } else {
            throw new SecurityException();
        }
    }

    private void createUser(EntityManager entityManager, User user) {
        synchronized (entityManager) {
            entityManager.getTransaction().begin();
            try {
                entityManager.persist(user);
                entityManager.getTransaction().commit();
            } catch (RuntimeException e) {
                entityManager.getTransaction().rollback();
                throw e;
            }
        }
    }

    @Override
    public List<Device> getDevices() {
        List<Device> devices = new LinkedList<Device>();
        User user = getSessionUser();
        devices.addAll(user.getDevices());
        return devices;
    }

    @Override
    public Device addDevice(Device device) {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            User user = getSessionUser();
            entityManager.getTransaction().begin();
            try {
                entityManager.persist(device);
                user.getDevices().add(device);
                entityManager.getTransaction().commit();
                return device;
            } catch (RuntimeException e) {
                entityManager.getTransaction().rollback();
                throw e;
            }
        }
    }

    @Override
    public Device updateDevice(Device device) {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            entityManager.getTransaction().begin();
            try {
                device = entityManager.merge(device);
                entityManager.getTransaction().commit();
                return device;
            } catch (RuntimeException e) {
                entityManager.getTransaction().rollback();
                throw e;
            }
        }
    }

    @Override
    public Device removeDevice(Device device) {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            User user = getSessionUser();
            entityManager.getTransaction().begin();
            try {
                device = entityManager.merge(device);
                user.getDevices().remove(device);
                device.setLatestPosition(null);
                entityManager.flush();
                Query query = entityManager.createQuery("DELETE FROM Position x WHERE x.device = :device");
                query.setParameter("device", device);
                query.executeUpdate();
                entityManager.remove(device);
                entityManager.getTransaction().commit();
                return device;
            } catch (RuntimeException e) {
                entityManager.getTransaction().rollback();
                throw e;
            }
        }
    }

    @Override
    public List<Position> getPositions(Device device, Date from, Date to) {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            List<Position> positions = new LinkedList<Position>();
            TypedQuery<Position> query = entityManager.createQuery(
                    "SELECT x FROM Position x WHERE x.device = :device AND x.time BETWEEN :from AND :to", Position.class);
            query.setParameter("device", device);
            query.setParameter("from", from);
            query.setParameter("to", to);
            positions.addAll(query.getResultList());
            return positions;
        }
    }

    @Override
    public List<Position> getLatestPositions() {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            List<Position> positions = new LinkedList<Position>();
            User user = getSessionUser();
            if (user.getDevices() != null && !user.getDevices().isEmpty()) {
                TypedQuery<Position> query = entityManager.createQuery(
                        "SELECT x FROM Position x WHERE x.id IN (" +
                                "SELECT y.latestPosition FROM Device y WHERE y IN (:devices))", Position.class);
                query.setParameter("devices", user.getDevices());
                positions.addAll(query.getResultList());
            }
            return positions;
        }
    }

    private ApplicationSettings applicationSettings;

    private ApplicationSettings getApplicationSettings() {
        if (applicationSettings == null) {
            EntityManager entityManager = getServletEntityManager();
            synchronized (entityManager) {
                TypedQuery<ApplicationSettings> query = entityManager.createQuery("SELECT x FROM ApplicationSettings x", ApplicationSettings.class);
                List<ApplicationSettings> resultList = query.getResultList();
                if (resultList == null || resultList.isEmpty()) {
                    applicationSettings = new ApplicationSettings();
                    entityManager.getTransaction().begin();
                    try {
                        entityManager.persist(applicationSettings);
                        entityManager.getTransaction().commit();
                    } catch (RuntimeException e) {
                        entityManager.getTransaction().rollback();
                        throw e;
                    }
                } else {
                    applicationSettings = resultList.get(0);
                }
            }
        }
        return applicationSettings;
    }

    @Override
    public ApplicationSettings updateApplicationSettings(ApplicationSettings applicationSettings) {
        if (applicationSettings == null) {
            return getApplicationSettings();
        } else {
            EntityManager entityManager = getServletEntityManager();
            synchronized (entityManager) {
                User user = getSessionUser();
                if (user.getAdmin()) {
                    entityManager.getTransaction().begin();
                    try {
                        entityManager.merge(applicationSettings);
                        entityManager.getTransaction().commit();
                        this.applicationSettings =  applicationSettings;
                        return applicationSettings;
                    } catch (RuntimeException e) {
                        entityManager.getTransaction().rollback();
                        throw e;
                    }
                } else {
                    throw new SecurityException();
                }
            }
        }
    }

}