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.XmppConnection;
26import eu.siacs.conversations.xmpp.manager.DiscoManager;
27import eu.siacs.conversations.xmpp.pep.Avatar;
28import im.conversations.android.xmpp.Entity;
29import im.conversations.android.xmpp.model.occupant.OccupantId;
30import java.util.ArrayList;
31import java.util.List;
32import java.util.concurrent.TimeoutException;
33import java.util.function.Consumer;
34import org.openintents.openpgp.util.OpenPgpUtils;
35
36public class PresenceParser extends AbstractParser
37 implements Consumer<im.conversations.android.xmpp.model.stanza.Presence> {
38
39 public PresenceParser(final XmppConnectionService service, final XmppConnection connection) {
40 super(service, connection);
41 }
42
43 public void parseConferencePresence(
44 final im.conversations.android.xmpp.model.stanza.Presence packet) {
45 final var account = getAccount();
46 final Conversation conversation =
47 packet.getFrom() == null
48 ? null
49 : mXmppConnectionService.find(account, packet.getFrom().asBareJid());
50 if (conversation == null) {
51 return;
52 }
53 final MucOptions mucOptions = conversation.getMucOptions();
54 boolean before = mucOptions.online();
55 int count = mucOptions.getUserCount();
56 final List<MucOptions.User> tileUserBefore = mucOptions.getUsers(5);
57 processConferencePresence(packet, conversation);
58 final List<MucOptions.User> tileUserAfter = mucOptions.getUsers(5);
59 if (Strings.isNullOrEmpty(mucOptions.getAvatar())
60 && !tileUserAfter.equals(tileUserBefore)) {
61 mXmppConnectionService.getAvatarService().clear(mucOptions);
62 }
63 if (before != mucOptions.online()
64 || (mucOptions.online() && count != mucOptions.getUserCount())) {
65 mXmppConnectionService.updateConversationUi();
66 } else if (mucOptions.online()) {
67 mXmppConnectionService.updateMucRosterUi();
68 }
69 }
70
71 private void processConferencePresence(
72 final im.conversations.android.xmpp.model.stanza.Presence packet,
73 Conversation conversation) {
74 final Account account = conversation.getAccount();
75 final MucOptions mucOptions = conversation.getMucOptions();
76 final Jid jid = conversation.getAccount().getJid();
77 final Jid from = packet.getFrom();
78 if (!from.isBareJid()) {
79 final String type = packet.getAttribute("type");
80 final Element x = packet.findChild("x", Namespace.MUC_USER);
81 Avatar avatar = Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
82 final List<String> codes = getStatusCodes(x);
83 if (type == null) {
84 if (x != null) {
85 Element item = x.findChild("item");
86 if (item != null && !from.isBareJid()) {
87 mucOptions.setError(MucOptions.Error.NONE);
88 final MucOptions.User user = parseItem(conversation, item, from);
89 final var occupant = packet.getOnlyExtension(OccupantId.class);
90 final String occupantId =
91 mucOptions.occupantId() && occupant != null
92 ? occupant.getId()
93 : null;
94 user.setOccupantId(occupantId);
95 if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)
96 || (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
97 && jid.equals(
98 Jid.Invalid.getNullForInvalid(
99 item.getAttributeAsJid("jid"))))) {
100 Log.d(
101 Config.LOGTAG,
102 account.getJid().asBareJid()
103 + ": got self-presence from "
104 + user.getFullJid()
105 + ". occupant-id="
106 + occupantId);
107 if (mucOptions.setOnline()) {
108 mXmppConnectionService.getAvatarService().clear(mucOptions);
109 }
110 final var current = mucOptions.getSelf().getFullJid();
111 if (mucOptions.setSelf(user)) {
112 Log.d(Config.LOGTAG, "role or affiliation changed");
113 mXmppConnectionService.databaseBackend.updateConversation(
114 conversation);
115 }
116 final var modified =
117 current == null || !current.equals(user.getFullJid());
118 mXmppConnectionService.persistSelfNick(user, modified);
119 invokeRenameListener(mucOptions, true);
120 }
121 boolean isNew = mucOptions.updateUser(user);
122 final AxolotlService axolotlService =
123 conversation.getAccount().getAxolotlService();
124 Contact contact = user.getContact();
125 if (isNew
126 && user.getRealJid() != null
127 && mucOptions.isPrivateAndNonAnonymous()
128 && (contact == null || !contact.mutualPresenceSubscription())
129 && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
130 axolotlService.fetchDeviceIds(user.getRealJid());
131 }
132 if (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
133 && mucOptions.autoPushConfiguration()) {
134 Log.d(
135 Config.LOGTAG,
136 account.getJid().asBareJid()
137 + ": room '"
138 + mucOptions.getConversation().getJid().asBareJid()
139 + "' created. pushing default configuration");
140 mXmppConnectionService.pushConferenceConfiguration(
141 mucOptions.getConversation(),
142 IqGenerator.defaultChannelConfiguration(),
143 null);
144 }
145 if (mXmppConnectionService.getPgpEngine() != null) {
146 Element signed = packet.findChild("x", "jabber:x:signed");
147 if (signed != null) {
148 Element status = packet.findChild("status");
149 String msg = status == null ? "" : status.getContent();
150 long keyId =
151 mXmppConnectionService
152 .getPgpEngine()
153 .fetchKeyId(
154 mucOptions.getAccount(),
155 msg,
156 signed.getContent());
157 if (keyId != 0) {
158 user.setPgpKeyId(keyId);
159 }
160 }
161 }
162 if (avatar != null) {
163 avatar.owner = from;
164 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
165 if (user.setAvatar(avatar)) {
166 mXmppConnectionService.getAvatarService().clear(user);
167 }
168 if (user.getRealJid() != null) {
169 final Contact c =
170 conversation
171 .getAccount()
172 .getRoster()
173 .getContact(user.getRealJid());
174 if (c.setAvatar(avatar)) {
175 mXmppConnectionService.syncRoster(
176 conversation.getAccount());
177 mXmppConnectionService.getAvatarService().clear(c);
178 }
179 mXmppConnectionService.updateRosterUi();
180 }
181 } else if (mXmppConnectionService.isDataSaverDisabled()) {
182 mXmppConnectionService.fetchAvatar(mucOptions.getAccount(), avatar);
183 }
184 }
185 }
186 }
187 } else if (type.equals("unavailable")) {
188 final boolean fullJidMatches = from.equals(mucOptions.getSelf().getFullJid());
189 if (x.hasChild("destroy") && fullJidMatches) {
190 Element destroy = x.findChild("destroy");
191 final Jid alternate =
192 destroy == null
193 ? null
194 : Jid.Invalid.getNullForInvalid(
195 destroy.getAttributeAsJid("jid"));
196 mucOptions.setError(MucOptions.Error.DESTROYED);
197 if (alternate != null) {
198 Log.d(
199 Config.LOGTAG,
200 account.getJid().asBareJid()
201 + ": muc destroyed. alternate location "
202 + alternate);
203 }
204 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN) && fullJidMatches) {
205 mucOptions.setError(MucOptions.Error.SHUTDOWN);
206 } else if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)) {
207 if (codes.contains(MucOptions.STATUS_CODE_TECHNICAL_REASONS)) {
208 final boolean wasOnline = mucOptions.online();
209 mucOptions.setError(MucOptions.Error.TECHNICAL_PROBLEMS);
210 Log.d(
211 Config.LOGTAG,
212 account.getJid().asBareJid()
213 + ": received status code 333 in room "
214 + mucOptions.getConversation().getJid().asBareJid()
215 + " online="
216 + wasOnline);
217 if (wasOnline) {
218 mXmppConnectionService.mucSelfPingAndRejoin(conversation);
219 }
220 } else if (codes.contains(MucOptions.STATUS_CODE_KICKED)) {
221 mucOptions.setError(MucOptions.Error.KICKED);
222 } else if (codes.contains(MucOptions.STATUS_CODE_BANNED)) {
223 mucOptions.setError(MucOptions.Error.BANNED);
224 } else if (codes.contains(MucOptions.STATUS_CODE_LOST_MEMBERSHIP)) {
225 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
226 } else if (codes.contains(MucOptions.STATUS_CODE_AFFILIATION_CHANGE)) {
227 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
228 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN)) {
229 mucOptions.setError(MucOptions.Error.SHUTDOWN);
230 } else if (!codes.contains(MucOptions.STATUS_CODE_CHANGED_NICK)) {
231 mucOptions.setError(MucOptions.Error.UNKNOWN);
232 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
233 }
234 } else if (!from.isBareJid()) {
235 Element item = x.findChild("item");
236 if (item != null) {
237 mucOptions.updateUser(parseItem(conversation, item, from));
238 }
239 MucOptions.User user = mucOptions.deleteUser(from);
240 if (user != null) {
241 mXmppConnectionService.getAvatarService().clear(user);
242 }
243 }
244 } else if (type.equals("error")) {
245 final Element error = packet.findChild("error");
246 if (error == null) {
247 return;
248 }
249 if (error.hasChild("conflict")) {
250 if (mucOptions.online()) {
251 invokeRenameListener(mucOptions, false);
252 } else {
253 mucOptions.setError(MucOptions.Error.NICK_IN_USE);
254 }
255 } else if (error.hasChild("not-authorized")) {
256 mucOptions.setError(MucOptions.Error.PASSWORD_REQUIRED);
257 } else if (error.hasChild("forbidden")) {
258 mucOptions.setError(MucOptions.Error.BANNED);
259 } else if (error.hasChild("registration-required")) {
260 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
261 } else if (error.hasChild("resource-constraint")) {
262 mucOptions.setError(MucOptions.Error.RESOURCE_CONSTRAINT);
263 } else if (error.hasChild("remote-server-timeout")) {
264 mucOptions.setError(MucOptions.Error.REMOTE_SERVER_TIMEOUT);
265 } else if (error.hasChild("gone")) {
266 final String gone = error.findChildContent("gone");
267 final Jid alternate;
268 if (gone != null) {
269 final XmppUri xmppUri = new XmppUri(gone);
270 if (xmppUri.isValidJid()) {
271 alternate = xmppUri.getJid();
272 } else {
273 alternate = null;
274 }
275 } else {
276 alternate = null;
277 }
278 mucOptions.setError(MucOptions.Error.DESTROYED);
279 if (alternate != null) {
280 Log.d(
281 Config.LOGTAG,
282 conversation.getAccount().getJid().asBareJid()
283 + ": muc destroyed. alternate location "
284 + alternate);
285 }
286 } else {
287 final String text = error.findChildContent("text");
288 if (text != null && text.contains("attribute 'to'")) {
289 if (mucOptions.online()) {
290 invokeRenameListener(mucOptions, false);
291 } else {
292 mucOptions.setError(MucOptions.Error.INVALID_NICK);
293 }
294 } else {
295 mucOptions.setError(MucOptions.Error.UNKNOWN);
296 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
297 }
298 }
299 }
300 }
301 }
302
303 private static void invokeRenameListener(final MucOptions options, boolean success) {
304 if (options.onRenameListener != null) {
305 if (success) {
306 options.onRenameListener.onSuccess();
307 } else {
308 options.onRenameListener.onFailure();
309 }
310 options.onRenameListener = null;
311 }
312 }
313
314 private static List<String> getStatusCodes(Element x) {
315 List<String> codes = new ArrayList<>();
316 if (x != null) {
317 for (Element child : x.getChildren()) {
318 if (child.getName().equals("status")) {
319 String code = child.getAttribute("code");
320 if (code != null) {
321 codes.add(code);
322 }
323 }
324 }
325 }
326 return codes;
327 }
328
329 private void parseContactPresence(
330 final im.conversations.android.xmpp.model.stanza.Presence packet) {
331 final var account = getAccount();
332 final PresenceGenerator mPresenceGenerator = mXmppConnectionService.getPresenceGenerator();
333 final Jid from = packet.getFrom();
334 if (from == null || from.equals(account.getJid())) {
335 return;
336 }
337 final String type = packet.getAttribute("type");
338 final Contact contact = account.getRoster().getContact(from);
339 if (type == null) {
340 final String resource = from.isBareJid() ? "" : from.getResource();
341 final Avatar avatar =
342 Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
343 if (avatar != null && (!contact.isSelf() || account.getAvatar() == null)) {
344 avatar.owner = from.asBareJid();
345 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
346 if (avatar.owner.equals(account.getJid().asBareJid())) {
347 account.setAvatar(avatar.getFilename());
348 mXmppConnectionService.databaseBackend.updateAccount(account);
349 mXmppConnectionService.getAvatarService().clear(account);
350 mXmppConnectionService.updateConversationUi();
351 mXmppConnectionService.updateAccountUi();
352 } else {
353 if (contact.setAvatar(avatar)) {
354 mXmppConnectionService.syncRoster(account);
355 mXmppConnectionService.getAvatarService().clear(contact);
356 mXmppConnectionService.updateConversationUi();
357 mXmppConnectionService.updateRosterUi();
358 }
359 }
360 } else if (mXmppConnectionService.isDataSaverDisabled()) {
361 mXmppConnectionService.fetchAvatar(account, avatar);
362 }
363 }
364
365 if (mXmppConnectionService.isMuc(account, from)) {
366 return;
367 }
368
369 final int sizeBefore = contact.getPresences().size();
370
371 contact.updatePresence(resource, packet);
372
373 final var nodeHash = packet.getCapabilities();
374 final var connection = account.getXmppConnection();
375 if (nodeHash != null && connection != null) {
376 final var discoFuture =
377 this.getManager(DiscoManager.class)
378 .infoOrCache(Entity.presence(from), nodeHash.node, nodeHash.hash);
379
380 logDiscoFailure(from, discoFuture);
381 }
382
383 final Element idle = packet.findChild("idle", Namespace.IDLE);
384 if (idle != null) {
385 try {
386 final String since = idle.getAttribute("since");
387 contact.setLastseen(AbstractParser.parseTimestamp(since));
388 contact.flagInactive();
389 } catch (Throwable throwable) {
390 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
391 contact.flagActive();
392 }
393 }
394 } else {
395 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
396 contact.flagActive();
397 }
398 }
399
400 final PgpEngine pgp = mXmppConnectionService.getPgpEngine();
401 final Element x = packet.findChild("x", "jabber:x:signed");
402 if (pgp != null && x != null) {
403 final String status = packet.findChildContent("status");
404 final long keyId = pgp.fetchKeyId(account, status, x.getContent());
405 if (keyId != 0 && contact.setPgpKeyId(keyId)) {
406 Log.d(
407 Config.LOGTAG,
408 account.getJid().asBareJid()
409 + ": found OpenPGP key id for "
410 + contact.getJid()
411 + " "
412 + OpenPgpUtils.convertKeyIdToHex(keyId));
413 mXmppConnectionService.syncRoster(account);
414 }
415 }
416 boolean online = sizeBefore < contact.getPresences().size();
417 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, online);
418 } else if (type.equals("unavailable")) {
419 if (contact.setLastseen(AbstractParser.parseTimestamp(packet, 0L, true))) {
420 contact.flagInactive();
421 }
422 getManager(DiscoManager.class).clear(from);
423 if (from.isBareJid()) {
424 contact.clearPresences();
425 } else {
426 contact.removePresence(from.getResource());
427 }
428 if (contact.getShownStatus()
429 == im.conversations.android.xmpp.model.stanza.Presence.Availability.OFFLINE) {
430 contact.flagInactive();
431 }
432 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, false);
433 } else if (type.equals("subscribe")) {
434 if (contact.isBlocked()) {
435 Log.d(
436 Config.LOGTAG,
437 account.getJid().asBareJid()
438 + ": ignoring 'subscribe' presence from blocked "
439 + from);
440 return;
441 }
442 if (contact.setPresenceName(packet.findChildContent("nick", Namespace.NICK))) {
443 mXmppConnectionService.syncRoster(account);
444 mXmppConnectionService.getAvatarService().clear(contact);
445 }
446 if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
447 mXmppConnectionService.sendPresencePacket(
448 account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
449 } else {
450 contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
451 final Conversation conversation =
452 mXmppConnectionService.findOrCreateConversation(
453 account, contact.getJid().asBareJid(), false, false);
454 final String statusMessage = packet.findChildContent("status");
455 if (statusMessage != null
456 && !statusMessage.isEmpty()
457 && conversation.countMessages() == 0) {
458 conversation.add(
459 new Message(
460 conversation,
461 statusMessage,
462 Message.ENCRYPTION_NONE,
463 Message.STATUS_RECEIVED));
464 }
465 }
466 }
467 mXmppConnectionService.updateRosterUi();
468 }
469
470 private static void logDiscoFailure(final Jid from, ListenableFuture<Void> discoFuture) {
471 Futures.addCallback(
472 discoFuture,
473 new FutureCallback<>() {
474 @Override
475 public void onSuccess(Void result) {}
476
477 @Override
478 public void onFailure(@NonNull Throwable throwable) {
479 if (throwable instanceof TimeoutException) {
480 return;
481 }
482 Log.d(Config.LOGTAG, "could not retrieve disco from " + from, throwable);
483 }
484 },
485 MoreExecutors.directExecutor());
486 }
487
488 @Override
489 public void accept(final im.conversations.android.xmpp.model.stanza.Presence packet) {
490 if (packet.hasChild("x", Namespace.MUC_USER)) {
491 this.parseConferencePresence(packet);
492 } else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
493 this.parseConferencePresence(packet);
494 } else if ("error".equals(packet.getAttribute("type"))
495 && mXmppConnectionService.isMuc(getAccount(), packet.getFrom())) {
496 this.parseConferencePresence(packet);
497 } else {
498 this.parseContactPresence(packet);
499 }
500 }
501}