1package eu.siacs.conversations.parser;
2
3import android.util.Log;
4import androidx.annotation.NonNull;
5import com.google.common.base.Strings;
6import com.google.common.util.concurrent.FutureCallback;
7import com.google.common.util.concurrent.Futures;
8import com.google.common.util.concurrent.ListenableFuture;
9import com.google.common.util.concurrent.MoreExecutors;
10import eu.siacs.conversations.Config;
11import eu.siacs.conversations.crypto.PgpEngine;
12import eu.siacs.conversations.crypto.axolotl.AxolotlService;
13import eu.siacs.conversations.entities.Account;
14import eu.siacs.conversations.entities.Contact;
15import eu.siacs.conversations.entities.Conversation;
16import eu.siacs.conversations.entities.Message;
17import eu.siacs.conversations.entities.MucOptions;
18import eu.siacs.conversations.generator.IqGenerator;
19import eu.siacs.conversations.generator.PresenceGenerator;
20import eu.siacs.conversations.services.XmppConnectionService;
21import eu.siacs.conversations.utils.XmppUri;
22import eu.siacs.conversations.xml.Element;
23import eu.siacs.conversations.xml.Namespace;
24import eu.siacs.conversations.xmpp.Jid;
25import eu.siacs.conversations.xmpp.manager.DiscoManager;
26import eu.siacs.conversations.xmpp.pep.Avatar;
27import im.conversations.android.xmpp.Entity;
28import im.conversations.android.xmpp.model.occupant.OccupantId;
29import java.util.ArrayList;
30import java.util.List;
31import java.util.concurrent.TimeoutException;
32import java.util.function.Consumer;
33import org.openintents.openpgp.util.OpenPgpUtils;
34
35public class PresenceParser extends AbstractParser
36 implements Consumer<im.conversations.android.xmpp.model.stanza.Presence> {
37
38 public PresenceParser(final XmppConnectionService service, final Account account) {
39 super(service, account);
40 }
41
42 public void parseConferencePresence(
43 final im.conversations.android.xmpp.model.stanza.Presence packet, Account account) {
44 final Conversation conversation =
45 packet.getFrom() == null
46 ? null
47 : mXmppConnectionService.find(account, packet.getFrom().asBareJid());
48 if (conversation == null) {
49 return;
50 }
51 final MucOptions mucOptions = conversation.getMucOptions();
52 boolean before = mucOptions.online();
53 int count = mucOptions.getUserCount();
54 final List<MucOptions.User> tileUserBefore = mucOptions.getUsers(5);
55 processConferencePresence(packet, conversation);
56 final List<MucOptions.User> tileUserAfter = mucOptions.getUsers(5);
57 if (Strings.isNullOrEmpty(mucOptions.getAvatar())
58 && !tileUserAfter.equals(tileUserBefore)) {
59 mXmppConnectionService.getAvatarService().clear(mucOptions);
60 }
61 if (before != mucOptions.online()
62 || (mucOptions.online() && count != mucOptions.getUserCount())) {
63 mXmppConnectionService.updateConversationUi();
64 } else if (mucOptions.online()) {
65 mXmppConnectionService.updateMucRosterUi();
66 }
67 }
68
69 private void processConferencePresence(
70 final im.conversations.android.xmpp.model.stanza.Presence packet,
71 Conversation conversation) {
72 final Account account = conversation.getAccount();
73 final MucOptions mucOptions = conversation.getMucOptions();
74 final Jid jid = conversation.getAccount().getJid();
75 final Jid from = packet.getFrom();
76 if (!from.isBareJid()) {
77 final String type = packet.getAttribute("type");
78 final Element x = packet.findChild("x", Namespace.MUC_USER);
79 Avatar avatar = Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
80 final List<String> codes = getStatusCodes(x);
81 if (type == null) {
82 if (x != null) {
83 Element item = x.findChild("item");
84 if (item != null && !from.isBareJid()) {
85 mucOptions.setError(MucOptions.Error.NONE);
86 final MucOptions.User user = parseItem(conversation, item, from);
87 final var occupant = packet.getOnlyExtension(OccupantId.class);
88 final String occupantId =
89 mucOptions.occupantId() && occupant != null
90 ? occupant.getId()
91 : null;
92 user.setOccupantId(occupantId);
93 if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)
94 || (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
95 && jid.equals(
96 Jid.Invalid.getNullForInvalid(
97 item.getAttributeAsJid("jid"))))) {
98 Log.d(
99 Config.LOGTAG,
100 account.getJid().asBareJid()
101 + ": got self-presence from "
102 + user.getFullJid()
103 + ". occupant-id="
104 + occupantId);
105 if (mucOptions.setOnline()) {
106 mXmppConnectionService.getAvatarService().clear(mucOptions);
107 }
108 final var current = mucOptions.getSelf().getFullJid();
109 if (mucOptions.setSelf(user)) {
110 Log.d(Config.LOGTAG, "role or affiliation changed");
111 mXmppConnectionService.databaseBackend.updateConversation(
112 conversation);
113 }
114 final var modified =
115 current == null || !current.equals(user.getFullJid());
116 mXmppConnectionService.persistSelfNick(user, modified);
117 invokeRenameListener(mucOptions, true);
118 }
119 boolean isNew = mucOptions.updateUser(user);
120 final AxolotlService axolotlService =
121 conversation.getAccount().getAxolotlService();
122 Contact contact = user.getContact();
123 if (isNew
124 && user.getRealJid() != null
125 && mucOptions.isPrivateAndNonAnonymous()
126 && (contact == null || !contact.mutualPresenceSubscription())
127 && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
128 axolotlService.fetchDeviceIds(user.getRealJid());
129 }
130 if (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
131 && mucOptions.autoPushConfiguration()) {
132 Log.d(
133 Config.LOGTAG,
134 account.getJid().asBareJid()
135 + ": room '"
136 + mucOptions.getConversation().getJid().asBareJid()
137 + "' created. pushing default configuration");
138 mXmppConnectionService.pushConferenceConfiguration(
139 mucOptions.getConversation(),
140 IqGenerator.defaultChannelConfiguration(),
141 null);
142 }
143 if (mXmppConnectionService.getPgpEngine() != null) {
144 Element signed = packet.findChild("x", "jabber:x:signed");
145 if (signed != null) {
146 Element status = packet.findChild("status");
147 String msg = status == null ? "" : status.getContent();
148 long keyId =
149 mXmppConnectionService
150 .getPgpEngine()
151 .fetchKeyId(
152 mucOptions.getAccount(),
153 msg,
154 signed.getContent());
155 if (keyId != 0) {
156 user.setPgpKeyId(keyId);
157 }
158 }
159 }
160 if (avatar != null) {
161 avatar.owner = from;
162 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
163 if (user.setAvatar(avatar)) {
164 mXmppConnectionService.getAvatarService().clear(user);
165 }
166 if (user.getRealJid() != null) {
167 final Contact c =
168 conversation
169 .getAccount()
170 .getRoster()
171 .getContact(user.getRealJid());
172 if (c.setAvatar(avatar)) {
173 mXmppConnectionService.syncRoster(
174 conversation.getAccount());
175 mXmppConnectionService.getAvatarService().clear(c);
176 }
177 mXmppConnectionService.updateRosterUi();
178 }
179 } else if (mXmppConnectionService.isDataSaverDisabled()) {
180 mXmppConnectionService.fetchAvatar(mucOptions.getAccount(), avatar);
181 }
182 }
183 }
184 }
185 } else if (type.equals("unavailable")) {
186 final boolean fullJidMatches = from.equals(mucOptions.getSelf().getFullJid());
187 if (x.hasChild("destroy") && fullJidMatches) {
188 Element destroy = x.findChild("destroy");
189 final Jid alternate =
190 destroy == null
191 ? null
192 : Jid.Invalid.getNullForInvalid(
193 destroy.getAttributeAsJid("jid"));
194 mucOptions.setError(MucOptions.Error.DESTROYED);
195 if (alternate != null) {
196 Log.d(
197 Config.LOGTAG,
198 account.getJid().asBareJid()
199 + ": muc destroyed. alternate location "
200 + alternate);
201 }
202 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN) && fullJidMatches) {
203 mucOptions.setError(MucOptions.Error.SHUTDOWN);
204 } else if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)) {
205 if (codes.contains(MucOptions.STATUS_CODE_TECHNICAL_REASONS)) {
206 final boolean wasOnline = mucOptions.online();
207 mucOptions.setError(MucOptions.Error.TECHNICAL_PROBLEMS);
208 Log.d(
209 Config.LOGTAG,
210 account.getJid().asBareJid()
211 + ": received status code 333 in room "
212 + mucOptions.getConversation().getJid().asBareJid()
213 + " online="
214 + wasOnline);
215 if (wasOnline) {
216 mXmppConnectionService.mucSelfPingAndRejoin(conversation);
217 }
218 } else if (codes.contains(MucOptions.STATUS_CODE_KICKED)) {
219 mucOptions.setError(MucOptions.Error.KICKED);
220 } else if (codes.contains(MucOptions.STATUS_CODE_BANNED)) {
221 mucOptions.setError(MucOptions.Error.BANNED);
222 } else if (codes.contains(MucOptions.STATUS_CODE_LOST_MEMBERSHIP)) {
223 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
224 } else if (codes.contains(MucOptions.STATUS_CODE_AFFILIATION_CHANGE)) {
225 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
226 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN)) {
227 mucOptions.setError(MucOptions.Error.SHUTDOWN);
228 } else if (!codes.contains(MucOptions.STATUS_CODE_CHANGED_NICK)) {
229 mucOptions.setError(MucOptions.Error.UNKNOWN);
230 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
231 }
232 } else if (!from.isBareJid()) {
233 Element item = x.findChild("item");
234 if (item != null) {
235 mucOptions.updateUser(parseItem(conversation, item, from));
236 }
237 MucOptions.User user = mucOptions.deleteUser(from);
238 if (user != null) {
239 mXmppConnectionService.getAvatarService().clear(user);
240 }
241 }
242 } else if (type.equals("error")) {
243 final Element error = packet.findChild("error");
244 if (error == null) {
245 return;
246 }
247 if (error.hasChild("conflict")) {
248 if (mucOptions.online()) {
249 invokeRenameListener(mucOptions, false);
250 } else {
251 mucOptions.setError(MucOptions.Error.NICK_IN_USE);
252 }
253 } else if (error.hasChild("not-authorized")) {
254 mucOptions.setError(MucOptions.Error.PASSWORD_REQUIRED);
255 } else if (error.hasChild("forbidden")) {
256 mucOptions.setError(MucOptions.Error.BANNED);
257 } else if (error.hasChild("registration-required")) {
258 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
259 } else if (error.hasChild("resource-constraint")) {
260 mucOptions.setError(MucOptions.Error.RESOURCE_CONSTRAINT);
261 } else if (error.hasChild("remote-server-timeout")) {
262 mucOptions.setError(MucOptions.Error.REMOTE_SERVER_TIMEOUT);
263 } else if (error.hasChild("gone")) {
264 final String gone = error.findChildContent("gone");
265 final Jid alternate;
266 if (gone != null) {
267 final XmppUri xmppUri = new XmppUri(gone);
268 if (xmppUri.isValidJid()) {
269 alternate = xmppUri.getJid();
270 } else {
271 alternate = null;
272 }
273 } else {
274 alternate = null;
275 }
276 mucOptions.setError(MucOptions.Error.DESTROYED);
277 if (alternate != null) {
278 Log.d(
279 Config.LOGTAG,
280 conversation.getAccount().getJid().asBareJid()
281 + ": muc destroyed. alternate location "
282 + alternate);
283 }
284 } else {
285 final String text = error.findChildContent("text");
286 if (text != null && text.contains("attribute 'to'")) {
287 if (mucOptions.online()) {
288 invokeRenameListener(mucOptions, false);
289 } else {
290 mucOptions.setError(MucOptions.Error.INVALID_NICK);
291 }
292 } else {
293 mucOptions.setError(MucOptions.Error.UNKNOWN);
294 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
295 }
296 }
297 }
298 }
299 }
300
301 private static void invokeRenameListener(final MucOptions options, boolean success) {
302 if (options.onRenameListener != null) {
303 if (success) {
304 options.onRenameListener.onSuccess();
305 } else {
306 options.onRenameListener.onFailure();
307 }
308 options.onRenameListener = null;
309 }
310 }
311
312 private static List<String> getStatusCodes(Element x) {
313 List<String> codes = new ArrayList<>();
314 if (x != null) {
315 for (Element child : x.getChildren()) {
316 if (child.getName().equals("status")) {
317 String code = child.getAttribute("code");
318 if (code != null) {
319 codes.add(code);
320 }
321 }
322 }
323 }
324 return codes;
325 }
326
327 private void parseContactPresence(
328 final im.conversations.android.xmpp.model.stanza.Presence packet,
329 final Account account) {
330 final PresenceGenerator mPresenceGenerator = mXmppConnectionService.getPresenceGenerator();
331 final Jid from = packet.getFrom();
332 if (from == null || from.equals(account.getJid())) {
333 return;
334 }
335 final String type = packet.getAttribute("type");
336 final Contact contact = account.getRoster().getContact(from);
337 if (type == null) {
338 final String resource = from.isBareJid() ? "" : from.getResource();
339 final Avatar avatar =
340 Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
341 if (avatar != null && (!contact.isSelf() || account.getAvatar() == null)) {
342 avatar.owner = from.asBareJid();
343 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
344 if (avatar.owner.equals(account.getJid().asBareJid())) {
345 account.setAvatar(avatar.getFilename());
346 mXmppConnectionService.databaseBackend.updateAccount(account);
347 mXmppConnectionService.getAvatarService().clear(account);
348 mXmppConnectionService.updateConversationUi();
349 mXmppConnectionService.updateAccountUi();
350 } else {
351 if (contact.setAvatar(avatar)) {
352 mXmppConnectionService.syncRoster(account);
353 mXmppConnectionService.getAvatarService().clear(contact);
354 mXmppConnectionService.updateConversationUi();
355 mXmppConnectionService.updateRosterUi();
356 }
357 }
358 } else if (mXmppConnectionService.isDataSaverDisabled()) {
359 mXmppConnectionService.fetchAvatar(account, avatar);
360 }
361 }
362
363 if (mXmppConnectionService.isMuc(account, from)) {
364 return;
365 }
366
367 final int sizeBefore = contact.getPresences().size();
368
369 contact.updatePresence(resource, packet);
370
371 final var nodeHash = packet.getCapabilities();
372 final var connection = account.getXmppConnection();
373 if (nodeHash != null && connection != null) {
374 final var discoFuture =
375 connection
376 .getManager(DiscoManager.class)
377 .infoOrCache(Entity.presence(from), nodeHash.node, nodeHash.hash);
378
379 logDiscoFailure(from, discoFuture);
380 }
381
382 final Element idle = packet.findChild("idle", Namespace.IDLE);
383 if (idle != null) {
384 try {
385 final String since = idle.getAttribute("since");
386 contact.setLastseen(AbstractParser.parseTimestamp(since));
387 contact.flagInactive();
388 } catch (Throwable throwable) {
389 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
390 contact.flagActive();
391 }
392 }
393 } else {
394 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
395 contact.flagActive();
396 }
397 }
398
399 final PgpEngine pgp = mXmppConnectionService.getPgpEngine();
400 final Element x = packet.findChild("x", "jabber:x:signed");
401 if (pgp != null && x != null) {
402 final String status = packet.findChildContent("status");
403 final long keyId = pgp.fetchKeyId(account, status, x.getContent());
404 if (keyId != 0 && contact.setPgpKeyId(keyId)) {
405 Log.d(
406 Config.LOGTAG,
407 account.getJid().asBareJid()
408 + ": found OpenPGP key id for "
409 + contact.getJid()
410 + " "
411 + OpenPgpUtils.convertKeyIdToHex(keyId));
412 mXmppConnectionService.syncRoster(account);
413 }
414 }
415 boolean online = sizeBefore < contact.getPresences().size();
416 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, online);
417 } else if (type.equals("unavailable")) {
418 if (contact.setLastseen(AbstractParser.parseTimestamp(packet, 0L, true))) {
419 contact.flagInactive();
420 }
421 if (from.isBareJid()) {
422 contact.clearPresences();
423 } else {
424 contact.removePresence(from.getResource());
425 }
426 if (contact.getShownStatus()
427 == im.conversations.android.xmpp.model.stanza.Presence.Availability.OFFLINE) {
428 contact.flagInactive();
429 }
430 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, false);
431 } else if (type.equals("subscribe")) {
432 if (contact.isBlocked()) {
433 Log.d(
434 Config.LOGTAG,
435 account.getJid().asBareJid()
436 + ": ignoring 'subscribe' presence from blocked "
437 + from);
438 return;
439 }
440 if (contact.setPresenceName(packet.findChildContent("nick", Namespace.NICK))) {
441 mXmppConnectionService.syncRoster(account);
442 mXmppConnectionService.getAvatarService().clear(contact);
443 }
444 if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
445 mXmppConnectionService.sendPresencePacket(
446 account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
447 } else {
448 contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
449 final Conversation conversation =
450 mXmppConnectionService.findOrCreateConversation(
451 account, contact.getJid().asBareJid(), false, false);
452 final String statusMessage = packet.findChildContent("status");
453 if (statusMessage != null
454 && !statusMessage.isEmpty()
455 && conversation.countMessages() == 0) {
456 conversation.add(
457 new Message(
458 conversation,
459 statusMessage,
460 Message.ENCRYPTION_NONE,
461 Message.STATUS_RECEIVED));
462 }
463 }
464 }
465 mXmppConnectionService.updateRosterUi();
466 }
467
468 private static void logDiscoFailure(final Jid from, ListenableFuture<Void> discoFuture) {
469 Futures.addCallback(
470 discoFuture,
471 new FutureCallback<>() {
472 @Override
473 public void onSuccess(Void result) {}
474
475 @Override
476 public void onFailure(@NonNull Throwable throwable) {
477 if (throwable instanceof TimeoutException) {
478 return;
479 }
480 Log.d(Config.LOGTAG, "could not retrieve disco from " + from, throwable);
481 }
482 },
483 MoreExecutors.directExecutor());
484 }
485
486 @Override
487 public void accept(final im.conversations.android.xmpp.model.stanza.Presence packet) {
488 if (packet.hasChild("x", Namespace.MUC_USER)) {
489 this.parseConferencePresence(packet, account);
490 } else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
491 this.parseConferencePresence(packet, account);
492 } else if ("error".equals(packet.getAttribute("type"))
493 && mXmppConnectionService.isMuc(account, packet.getFrom())) {
494 this.parseConferencePresence(packet, account);
495 } else {
496 this.parseContactPresence(packet, account);
497 }
498 }
499}