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