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