1package eu.siacs.conversations.services;
2
3
4import android.content.SharedPreferences;
5import android.net.Uri;
6import android.os.SystemClock;
7import android.preference.PreferenceManager;
8import android.util.Log;
9
10import java.io.BufferedWriter;
11import java.io.OutputStream;
12import java.io.OutputStreamWriter;
13import java.net.ConnectException;
14import java.net.HttpURLConnection;
15import java.net.URL;
16import java.net.UnknownHostException;
17import java.security.SecureRandom;
18import java.util.ArrayList;
19import java.util.Collection;
20import java.util.Collections;
21import java.util.List;
22import java.util.Locale;
23import java.util.Map;
24import java.util.Set;
25import java.util.UUID;
26import java.util.WeakHashMap;
27import java.util.concurrent.CountDownLatch;
28import java.util.concurrent.TimeUnit;
29import java.util.concurrent.atomic.AtomicBoolean;
30import java.util.concurrent.atomic.AtomicInteger;
31
32import javax.net.ssl.SSLHandshakeException;
33
34import eu.siacs.conversations.Config;
35import eu.siacs.conversations.android.JabberIdContact;
36import eu.siacs.conversations.android.PhoneNumberContact;
37import eu.siacs.conversations.crypto.sasl.Plain;
38import eu.siacs.conversations.entities.Account;
39import eu.siacs.conversations.entities.Contact;
40import eu.siacs.conversations.entities.Entry;
41import eu.siacs.conversations.utils.AccountUtils;
42import eu.siacs.conversations.utils.CryptoHelper;
43import eu.siacs.conversations.utils.PhoneNumberUtilWrapper;
44import eu.siacs.conversations.utils.SerialSingleThreadExecutor;
45import eu.siacs.conversations.xml.Element;
46import eu.siacs.conversations.xml.Namespace;
47import eu.siacs.conversations.xmpp.OnIqPacketReceived;
48import eu.siacs.conversations.xmpp.XmppConnection;
49import eu.siacs.conversations.xmpp.stanzas.IqPacket;
50import io.michaelrocks.libphonenumber.android.Phonenumber;
51import rocks.xmpp.addr.Jid;
52
53public class QuickConversationsService extends AbstractQuickConversationsService {
54
55
56 public static final int API_ERROR_OTHER = -1;
57 public static final int API_ERROR_UNKNOWN_HOST = -2;
58 public static final int API_ERROR_CONNECT = -3;
59 public static final int API_ERROR_SSL_HANDSHAKE = -4;
60 public static final int API_ERROR_AIRPLANE_MODE = -5;
61
62 private static final String API_DOMAIN = "api." + Config.QUICKSY_DOMAIN;
63
64 private static final String BASE_URL = "https://" + API_DOMAIN;
65
66 private static final String INSTALLATION_ID = "eu.siacs.conversations.installation-id";
67
68 private final Set<OnVerificationRequested> mOnVerificationRequested = Collections.newSetFromMap(new WeakHashMap<>());
69 private final Set<OnVerification> mOnVerification = Collections.newSetFromMap(new WeakHashMap<>());
70
71 private final AtomicBoolean mVerificationInProgress = new AtomicBoolean(false);
72 private final AtomicBoolean mVerificationRequestInProgress = new AtomicBoolean(false);
73 private final AtomicInteger mRunningSyncJobs = new AtomicInteger(0);
74 private CountDownLatch awaitingAccountStateChange;
75
76 private Attempt mLastSyncAttempt = Attempt.NULL;
77
78 private final SerialSingleThreadExecutor mSerialSingleThreadExecutor = new SerialSingleThreadExecutor(QuickConversationsService.class.getSimpleName());
79
80 QuickConversationsService(XmppConnectionService xmppConnectionService) {
81 super(xmppConnectionService);
82 }
83
84 private static long retryAfter(HttpURLConnection connection) {
85 try {
86 return SystemClock.elapsedRealtime() + (Long.parseLong(connection.getHeaderField("Retry-After")) * 1000L);
87 } catch (Exception e) {
88 return 0;
89 }
90 }
91
92 public void addOnVerificationRequestedListener(OnVerificationRequested onVerificationRequested) {
93 synchronized (mOnVerificationRequested) {
94 mOnVerificationRequested.add(onVerificationRequested);
95 }
96 }
97
98 public void removeOnVerificationRequestedListener(OnVerificationRequested onVerificationRequested) {
99 synchronized (mOnVerificationRequested) {
100 mOnVerificationRequested.remove(onVerificationRequested);
101 }
102 }
103
104 public void addOnVerificationListener(OnVerification onVerification) {
105 synchronized (mOnVerification) {
106 mOnVerification.add(onVerification);
107 }
108 }
109
110 public void removeOnVerificationListener(OnVerification onVerification) {
111 synchronized (mOnVerification) {
112 mOnVerification.remove(onVerification);
113 }
114 }
115
116 public void requestVerification(Phonenumber.PhoneNumber phoneNumber) {
117 final String e164 = PhoneNumberUtilWrapper.normalize(service, phoneNumber);
118 if (mVerificationRequestInProgress.compareAndSet(false, true)) {
119 new Thread(() -> {
120 try {
121 final URL url = new URL(BASE_URL + "/authentication/" + e164);
122 HttpURLConnection connection = (HttpURLConnection) url.openConnection();
123 connection.setConnectTimeout(Config.SOCKET_TIMEOUT * 1000);
124 connection.setReadTimeout(Config.SOCKET_TIMEOUT * 1000);
125 setHeader(connection);
126 final int code = connection.getResponseCode();
127 if (code == 200) {
128 createAccountAndWait(phoneNumber, 0L);
129 } else if (code == 429) {
130 createAccountAndWait(phoneNumber, retryAfter(connection));
131 } else {
132 synchronized (mOnVerificationRequested) {
133 for (OnVerificationRequested onVerificationRequested : mOnVerificationRequested) {
134 onVerificationRequested.onVerificationRequestFailed(code);
135 }
136 }
137 }
138 } catch (Exception e) {
139 final int code = getApiErrorCode(e);
140 synchronized (mOnVerificationRequested) {
141 for (OnVerificationRequested onVerificationRequested : mOnVerificationRequested) {
142 onVerificationRequested.onVerificationRequestFailed(code);
143 }
144 }
145 } finally {
146 mVerificationRequestInProgress.set(false);
147 }
148 }).start();
149 }
150
151
152 }
153
154 public void signalAccountStateChange() {
155 if (awaitingAccountStateChange != null && awaitingAccountStateChange.getCount() > 0) {
156 Log.d(Config.LOGTAG, "signaled state change");
157 awaitingAccountStateChange.countDown();
158 }
159 }
160
161 private void createAccountAndWait(Phonenumber.PhoneNumber phoneNumber, final long timestamp) {
162 String local = PhoneNumberUtilWrapper.normalize(service, phoneNumber);
163 Log.d(Config.LOGTAG, "requesting verification for " + PhoneNumberUtilWrapper.normalize(service, phoneNumber));
164 Jid jid = Jid.of(local, Config.QUICKSY_DOMAIN, null);
165 Account account = AccountUtils.getFirst(service);
166 if (account == null || !account.getJid().asBareJid().equals(jid.asBareJid())) {
167 if (account != null) {
168 service.deleteAccount(account);
169 }
170 account = new Account(jid, CryptoHelper.createPassword(new SecureRandom()));
171 account.setOption(Account.OPTION_DISABLED, true);
172 account.setOption(Account.OPTION_UNVERIFIED, true);
173 service.createAccount(account);
174 }
175 synchronized (mOnVerificationRequested) {
176 for (OnVerificationRequested onVerificationRequested : mOnVerificationRequested) {
177 if (timestamp <= 0) {
178 onVerificationRequested.onVerificationRequested();
179 } else {
180 onVerificationRequested.onVerificationRequestedRetryAt(timestamp);
181 }
182 }
183 }
184 }
185
186 public void verify(final Account account, String pin) {
187 if (mVerificationInProgress.compareAndSet(false, true)) {
188 new Thread(() -> {
189 try {
190 final URL url = new URL(BASE_URL + "/password");
191 final HttpURLConnection connection = (HttpURLConnection) url.openConnection();
192 connection.setConnectTimeout(Config.SOCKET_TIMEOUT * 1000);
193 connection.setReadTimeout(Config.SOCKET_TIMEOUT * 1000);
194 connection.setRequestMethod("POST");
195 connection.setRequestProperty("Authorization", Plain.getMessage(account.getUsername(), pin));
196 setHeader(connection);
197 final OutputStream os = connection.getOutputStream();
198 final BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
199 writer.write(account.getPassword());
200 writer.flush();
201 writer.close();
202 os.close();
203 connection.connect();
204 final int code = connection.getResponseCode();
205 if (code == 200) {
206 account.setOption(Account.OPTION_UNVERIFIED, false);
207 account.setOption(Account.OPTION_DISABLED, false);
208 awaitingAccountStateChange = new CountDownLatch(1);
209 service.updateAccount(account);
210 try {
211 awaitingAccountStateChange.await(5, TimeUnit.SECONDS);
212 } catch (InterruptedException e) {
213 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": timer expired while waiting for account to connect");
214 }
215 synchronized (mOnVerification) {
216 for (OnVerification onVerification : mOnVerification) {
217 onVerification.onVerificationSucceeded();
218 }
219 }
220 } else if (code == 429) {
221 final long retryAfter = retryAfter(connection);
222 synchronized (mOnVerification) {
223 for (OnVerification onVerification : mOnVerification) {
224 onVerification.onVerificationRetryAt(retryAfter);
225 }
226 }
227 } else {
228 synchronized (mOnVerification) {
229 for (OnVerification onVerification : mOnVerification) {
230 onVerification.onVerificationFailed(code);
231 }
232 }
233 }
234 } catch (Exception e) {
235 final int code = getApiErrorCode(e);
236 synchronized (mOnVerification) {
237 for (OnVerification onVerification : mOnVerification) {
238 onVerification.onVerificationFailed(code);
239 }
240 }
241 } finally {
242 mVerificationInProgress.set(false);
243 }
244 }).start();
245 }
246 }
247
248 private void setHeader(HttpURLConnection connection) {
249 connection.setRequestProperty("User-Agent", service.getIqGenerator().getUserAgent());
250 connection.setRequestProperty("Installation-Id", getInstallationId());
251 connection.setRequestProperty("Accept-Language", Locale.getDefault().getLanguage());
252 }
253
254 private String getInstallationId() {
255 SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(service);
256 String id = preferences.getString(INSTALLATION_ID, null);
257 if (id != null) {
258 return id;
259 } else {
260 id = UUID.randomUUID().toString();
261 preferences.edit().putString(INSTALLATION_ID, id).apply();
262 return id;
263 }
264
265 }
266
267 private int getApiErrorCode(Exception e) {
268 if (!service.hasInternetConnection()) {
269 return API_ERROR_AIRPLANE_MODE;
270 } else if (e instanceof UnknownHostException) {
271 return API_ERROR_UNKNOWN_HOST;
272 } else if (e instanceof ConnectException) {
273 return API_ERROR_CONNECT;
274 } else if (e instanceof SSLHandshakeException) {
275 return API_ERROR_SSL_HANDSHAKE;
276 } else {
277 Log.d(Config.LOGTAG, e.getClass().getName());
278 return API_ERROR_OTHER;
279 }
280 }
281
282 public boolean isVerifying() {
283 return mVerificationInProgress.get();
284 }
285
286 public boolean isRequestingVerification() {
287 return mVerificationRequestInProgress.get();
288 }
289
290
291 @Override
292 public boolean isSynchronizing() {
293 return mRunningSyncJobs.get() > 0;
294 }
295
296 @Override
297 public void considerSync() {
298 considerSync(false);
299 }
300
301 @Override
302 public void considerSyncBackground(final boolean forced) {
303 mRunningSyncJobs.incrementAndGet();
304 mSerialSingleThreadExecutor.execute(() -> {
305 considerSync(forced);
306 if (mRunningSyncJobs.decrementAndGet() == 0) {
307 service.updateRosterUi();
308 }
309 });
310 }
311
312
313 private void considerSync(boolean forced) {
314 Map<String, PhoneNumberContact> contacts = PhoneNumberContact.load(service);
315 for (Account account : service.getAccounts()) {
316 refresh(account, contacts.values());
317 if (!considerSync(account, contacts, forced)) {
318 service.syncRoster(account);
319 }
320 }
321 }
322
323 private void refresh(Account account, Collection<PhoneNumberContact> contacts) {
324 for (Contact contact : account.getRoster().getWithSystemAccounts(PhoneNumberContact.class)) {
325 final Uri uri = contact.getSystemAccount();
326 if (uri == null) {
327 continue;
328 }
329 PhoneNumberContact phoneNumberContact = PhoneNumberContact.findByUri(contacts, uri);
330 final boolean needsCacheClean;
331 if (phoneNumberContact != null) {
332 needsCacheClean = contact.setPhoneContact(phoneNumberContact);
333 } else {
334 needsCacheClean = contact.unsetPhoneContact(PhoneNumberContact.class);
335 Log.d(Config.LOGTAG, uri.toString() + " vanished from address book");
336 }
337 if (needsCacheClean) {
338 service.getAvatarService().clear(contact);
339 }
340 }
341 }
342
343 private boolean considerSync(Account account, final Map<String, PhoneNumberContact> contacts, final boolean forced) {
344 final int hash = contacts.keySet().hashCode();
345 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": consider sync of " + hash);
346 if (!mLastSyncAttempt.retry(hash) && !forced) {
347 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": do not attempt sync");
348 return false;
349 }
350 mRunningSyncJobs.incrementAndGet();
351 final Jid syncServer = Jid.of(API_DOMAIN);
352 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending phone list to " + syncServer);
353 List<Element> entries = new ArrayList<>();
354 for (PhoneNumberContact c : contacts.values()) {
355 entries.add(new Element("entry").setAttribute("number", c.getPhoneNumber()));
356 }
357 IqPacket query = new IqPacket(IqPacket.TYPE.GET);
358 query.setTo(syncServer);
359 Element book = new Element("phone-book", Namespace.SYNCHRONIZATION).setChildren(entries);
360 String statusQuo = Entry.statusQuo(contacts.values(), account.getRoster().getWithSystemAccounts(PhoneNumberContact.class));
361 book.setAttribute("ver", statusQuo);
362 query.addChild(book);
363 mLastSyncAttempt = Attempt.create(hash);
364 service.sendIqPacket(account, query, (a, response) -> {
365 if (response.getType() == IqPacket.TYPE.RESULT) {
366 final Element phoneBook = response.findChild("phone-book", Namespace.SYNCHRONIZATION);
367 if (phoneBook != null) {
368 List<Contact> withSystemAccounts = account.getRoster().getWithSystemAccounts(PhoneNumberContact.class);
369 for (Entry entry : Entry.ofPhoneBook(phoneBook)) {
370 PhoneNumberContact phoneContact = contacts.get(entry.getNumber());
371 if (phoneContact == null) {
372 continue;
373 }
374 for (Jid jid : entry.getJids()) {
375 Contact contact = account.getRoster().getContact(jid);
376 final boolean needsCacheClean = contact.setPhoneContact(phoneContact);
377 if (needsCacheClean) {
378 service.getAvatarService().clear(contact);
379 }
380 withSystemAccounts.remove(contact);
381 }
382 }
383 for (Contact contact : withSystemAccounts) {
384 final boolean needsCacheClean = contact.unsetPhoneContact(PhoneNumberContact.class);
385 if (needsCacheClean) {
386 service.getAvatarService().clear(contact);
387 }
388 }
389 } else {
390 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": phone number contact list remains unchanged");
391 }
392 } else if (response.getType() == IqPacket.TYPE.TIMEOUT) {
393 mLastSyncAttempt = Attempt.NULL;
394 } else {
395 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": failed to sync contact list with api server");
396 }
397 mRunningSyncJobs.decrementAndGet();
398 service.syncRoster(account);
399 service.updateRosterUi();
400 });
401 return true;
402 }
403
404
405 public interface OnVerificationRequested {
406 void onVerificationRequestFailed(int code);
407
408 void onVerificationRequested();
409
410 void onVerificationRequestedRetryAt(long timestamp);
411 }
412
413 public interface OnVerification {
414 void onVerificationFailed(int code);
415
416 void onVerificationSucceeded();
417
418 void onVerificationRetryAt(long timestamp);
419 }
420
421 private static class Attempt {
422 private final long timestamp;
423 private int hash;
424
425 private static final Attempt NULL = new Attempt(0, 0);
426
427 private Attempt(long timestamp, int hash) {
428 this.timestamp = timestamp;
429 this.hash = hash;
430 }
431
432 public static Attempt create(int hash) {
433 return new Attempt(SystemClock.elapsedRealtime(), hash);
434 }
435
436 public boolean retry(int hash) {
437 return hash != this.hash || SystemClock.elapsedRealtime() - timestamp >= Config.CONTACT_SYNC_RETRY_INTERVAL;
438 }
439 }
440}