1package eu.siacs.conversations.parser;
2
3import android.util.Log;
4import com.google.common.base.Strings;
5import eu.siacs.conversations.Config;
6import eu.siacs.conversations.crypto.PgpEngine;
7import eu.siacs.conversations.crypto.axolotl.AxolotlService;
8import eu.siacs.conversations.entities.Account;
9import eu.siacs.conversations.entities.Contact;
10import eu.siacs.conversations.entities.Conversation;
11import eu.siacs.conversations.entities.Message;
12import eu.siacs.conversations.entities.MucOptions;
13import eu.siacs.conversations.entities.Presence;
14import eu.siacs.conversations.generator.IqGenerator;
15import eu.siacs.conversations.generator.PresenceGenerator;
16import eu.siacs.conversations.services.XmppConnectionService;
17import eu.siacs.conversations.utils.XmppUri;
18import eu.siacs.conversations.xml.Element;
19import eu.siacs.conversations.xml.Namespace;
20import eu.siacs.conversations.xmpp.Jid;
21import eu.siacs.conversations.xmpp.pep.Avatar;
22import im.conversations.android.xmpp.model.occupant.OccupantId;
23import java.util.ArrayList;
24import java.util.List;
25import java.util.function.Consumer;
26import org.openintents.openpgp.util.OpenPgpUtils;
27
28public class PresenceParser extends AbstractParser
29 implements Consumer<im.conversations.android.xmpp.model.stanza.Presence> {
30
31 public PresenceParser(final XmppConnectionService service, final Account account) {
32 super(service, account);
33 }
34
35 public void parseConferencePresence(
36 final im.conversations.android.xmpp.model.stanza.Presence packet, Account account) {
37 final Conversation conversation =
38 packet.getFrom() == null
39 ? null
40 : mXmppConnectionService.find(account, packet.getFrom().asBareJid());
41 if (conversation == null) {
42 return;
43 }
44 final MucOptions mucOptions = conversation.getMucOptions();
45 boolean before = mucOptions.online();
46 int count = mucOptions.getUserCount();
47 final List<MucOptions.User> tileUserBefore = mucOptions.getUsers(5);
48 processConferencePresence(packet, conversation);
49 final List<MucOptions.User> tileUserAfter = mucOptions.getUsers(5);
50 if (Strings.isNullOrEmpty(mucOptions.getAvatar())
51 && !tileUserAfter.equals(tileUserBefore)) {
52 mXmppConnectionService.getAvatarService().clear(mucOptions);
53 }
54 if (before != mucOptions.online()
55 || (mucOptions.online() && count != mucOptions.getUserCount())) {
56 mXmppConnectionService.updateConversationUi();
57 } else if (mucOptions.online()) {
58 mXmppConnectionService.updateMucRosterUi();
59 }
60 }
61
62 private void processConferencePresence(
63 final im.conversations.android.xmpp.model.stanza.Presence packet,
64 Conversation conversation) {
65 final Account account = conversation.getAccount();
66 final MucOptions mucOptions = conversation.getMucOptions();
67 final Jid jid = conversation.getAccount().getJid();
68 final Jid from = packet.getFrom();
69 if (!from.isBareJid()) {
70 final String type = packet.getAttribute("type");
71 final Element x = packet.findChild("x", Namespace.MUC_USER);
72 Avatar avatar = Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
73 final List<String> codes = getStatusCodes(x);
74 if (type == null) {
75 if (x != null) {
76 Element item = x.findChild("item");
77 if (item != null && !from.isBareJid()) {
78 mucOptions.setError(MucOptions.Error.NONE);
79 final MucOptions.User user = parseItem(conversation, item, from);
80 final var occupant = packet.getOnlyExtension(OccupantId.class);
81 final String occupantId =
82 mucOptions.occupantId() && occupant != null
83 ? occupant.getId()
84 : null;
85 user.setOccupantId(occupantId);
86 if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)
87 || (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
88 && jid.equals(
89 Jid.Invalid.getNullForInvalid(
90 item.getAttributeAsJid("jid"))))) {
91 Log.d(
92 Config.LOGTAG,
93 account.getJid().asBareJid()
94 + ": got self-presence from "
95 + user.getFullJid()
96 + ". occupant-id="
97 + occupantId);
98 if (mucOptions.setOnline()) {
99 mXmppConnectionService.getAvatarService().clear(mucOptions);
100 }
101 final var current = mucOptions.getSelf().getFullJid();
102 if (mucOptions.setSelf(user)) {
103 Log.d(Config.LOGTAG, "role or affiliation changed");
104 mXmppConnectionService.databaseBackend.updateConversation(
105 conversation);
106 }
107 final var modified =
108 current == null || !current.equals(user.getFullJid());
109 mXmppConnectionService.persistSelfNick(user, modified);
110 invokeRenameListener(mucOptions, true);
111 }
112 boolean isNew = mucOptions.updateUser(user);
113 final AxolotlService axolotlService =
114 conversation.getAccount().getAxolotlService();
115 Contact contact = user.getContact();
116 if (isNew
117 && user.getRealJid() != null
118 && mucOptions.isPrivateAndNonAnonymous()
119 && (contact == null || !contact.mutualPresenceSubscription())
120 && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
121 axolotlService.fetchDeviceIds(user.getRealJid());
122 }
123 if (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
124 && mucOptions.autoPushConfiguration()) {
125 Log.d(
126 Config.LOGTAG,
127 account.getJid().asBareJid()
128 + ": room '"
129 + mucOptions.getConversation().getJid().asBareJid()
130 + "' created. pushing default configuration");
131 mXmppConnectionService.pushConferenceConfiguration(
132 mucOptions.getConversation(),
133 IqGenerator.defaultChannelConfiguration(),
134 null);
135 }
136 if (mXmppConnectionService.getPgpEngine() != null) {
137 Element signed = packet.findChild("x", "jabber:x:signed");
138 if (signed != null) {
139 Element status = packet.findChild("status");
140 String msg = status == null ? "" : status.getContent();
141 long keyId =
142 mXmppConnectionService
143 .getPgpEngine()
144 .fetchKeyId(
145 mucOptions.getAccount(),
146 msg,
147 signed.getContent());
148 if (keyId != 0) {
149 user.setPgpKeyId(keyId);
150 }
151 }
152 }
153 if (avatar != null) {
154 avatar.owner = from;
155 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
156 if (user.setAvatar(avatar)) {
157 mXmppConnectionService.getAvatarService().clear(user);
158 }
159 if (user.getRealJid() != null) {
160 final Contact c =
161 conversation
162 .getAccount()
163 .getRoster()
164 .getContact(user.getRealJid());
165 if (c.setAvatar(avatar)) {
166 mXmppConnectionService.syncRoster(
167 conversation.getAccount());
168 mXmppConnectionService.getAvatarService().clear(c);
169 }
170 mXmppConnectionService.updateRosterUi();
171 }
172 } else if (mXmppConnectionService.isDataSaverDisabled()) {
173 mXmppConnectionService.fetchAvatar(mucOptions.getAccount(), avatar);
174 }
175 }
176 }
177 }
178 } else if (type.equals("unavailable")) {
179 final boolean fullJidMatches = from.equals(mucOptions.getSelf().getFullJid());
180 if (x.hasChild("destroy") && fullJidMatches) {
181 Element destroy = x.findChild("destroy");
182 final Jid alternate =
183 destroy == null
184 ? null
185 : Jid.Invalid.getNullForInvalid(
186 destroy.getAttributeAsJid("jid"));
187 mucOptions.setError(MucOptions.Error.DESTROYED);
188 if (alternate != null) {
189 Log.d(
190 Config.LOGTAG,
191 account.getJid().asBareJid()
192 + ": muc destroyed. alternate location "
193 + alternate);
194 }
195 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN) && fullJidMatches) {
196 mucOptions.setError(MucOptions.Error.SHUTDOWN);
197 } else if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)) {
198 if (codes.contains(MucOptions.STATUS_CODE_TECHNICAL_REASONS)) {
199 final boolean wasOnline = mucOptions.online();
200 mucOptions.setError(MucOptions.Error.TECHNICAL_PROBLEMS);
201 Log.d(
202 Config.LOGTAG,
203 account.getJid().asBareJid()
204 + ": received status code 333 in room "
205 + mucOptions.getConversation().getJid().asBareJid()
206 + " online="
207 + wasOnline);
208 if (wasOnline) {
209 mXmppConnectionService.mucSelfPingAndRejoin(conversation);
210 }
211 } else if (codes.contains(MucOptions.STATUS_CODE_KICKED)) {
212 mucOptions.setError(MucOptions.Error.KICKED);
213 } else if (codes.contains(MucOptions.STATUS_CODE_BANNED)) {
214 mucOptions.setError(MucOptions.Error.BANNED);
215 } else if (codes.contains(MucOptions.STATUS_CODE_LOST_MEMBERSHIP)) {
216 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
217 } else if (codes.contains(MucOptions.STATUS_CODE_AFFILIATION_CHANGE)) {
218 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
219 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN)) {
220 mucOptions.setError(MucOptions.Error.SHUTDOWN);
221 } else if (!codes.contains(MucOptions.STATUS_CODE_CHANGED_NICK)) {
222 mucOptions.setError(MucOptions.Error.UNKNOWN);
223 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
224 }
225 } else if (!from.isBareJid()) {
226 Element item = x.findChild("item");
227 if (item != null) {
228 mucOptions.updateUser(parseItem(conversation, item, from));
229 }
230 MucOptions.User user = mucOptions.deleteUser(from);
231 if (user != 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 Account account) {
323 final PresenceGenerator mPresenceGenerator = mXmppConnectionService.getPresenceGenerator();
324 final Jid from = packet.getFrom();
325 if (from == null || from.equals(account.getJid())) {
326 return;
327 }
328 final String type = packet.getAttribute("type");
329 final Contact contact = account.getRoster().getContact(from);
330 if (type == null) {
331 final String resource = from.isBareJid() ? "" : from.getResource();
332 final Avatar avatar =
333 Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
334 if (avatar != null && (!contact.isSelf() || account.getAvatar() == null)) {
335 avatar.owner = from.asBareJid();
336 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
337 if (avatar.owner.equals(account.getJid().asBareJid())) {
338 account.setAvatar(avatar.getFilename());
339 mXmppConnectionService.databaseBackend.updateAccount(account);
340 mXmppConnectionService.getAvatarService().clear(account);
341 mXmppConnectionService.updateConversationUi();
342 mXmppConnectionService.updateAccountUi();
343 } else {
344 if (contact.setAvatar(avatar)) {
345 mXmppConnectionService.syncRoster(account);
346 mXmppConnectionService.getAvatarService().clear(contact);
347 mXmppConnectionService.updateConversationUi();
348 mXmppConnectionService.updateRosterUi();
349 }
350 }
351 } else if (mXmppConnectionService.isDataSaverDisabled()) {
352 mXmppConnectionService.fetchAvatar(account, avatar);
353 }
354 }
355
356 if (mXmppConnectionService.isMuc(account, from)) {
357 return;
358 }
359
360 final int sizeBefore = contact.getPresences().size();
361
362 final String show = packet.findChildContent("show");
363 final Element caps = packet.findChild("c", "http://jabber.org/protocol/caps");
364 final String message = packet.findChildContent("status");
365 final Presence presence = Presence.parse(show, caps, message);
366 contact.updatePresence(resource, presence);
367 if (presence.hasCaps()) {
368 mXmppConnectionService.fetchCaps(account, from, presence);
369 }
370
371 final Element idle = packet.findChild("idle", Namespace.IDLE);
372 if (idle != null) {
373 try {
374 final String since = idle.getAttribute("since");
375 contact.setLastseen(AbstractParser.parseTimestamp(since));
376 contact.flagInactive();
377 } catch (Throwable throwable) {
378 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
379 contact.flagActive();
380 }
381 }
382 } else {
383 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
384 contact.flagActive();
385 }
386 }
387
388 final PgpEngine pgp = mXmppConnectionService.getPgpEngine();
389 final Element x = packet.findChild("x", "jabber:x:signed");
390 if (pgp != null && x != null) {
391 final String status = packet.findChildContent("status");
392 final long keyId = pgp.fetchKeyId(account, status, x.getContent());
393 if (keyId != 0 && contact.setPgpKeyId(keyId)) {
394 Log.d(
395 Config.LOGTAG,
396 account.getJid().asBareJid()
397 + ": found OpenPGP key id for "
398 + contact.getJid()
399 + " "
400 + OpenPgpUtils.convertKeyIdToHex(keyId));
401 mXmppConnectionService.syncRoster(account);
402 }
403 }
404 boolean online = sizeBefore < contact.getPresences().size();
405 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, online);
406 } else if (type.equals("unavailable")) {
407 if (contact.setLastseen(AbstractParser.parseTimestamp(packet, 0L, true))) {
408 contact.flagInactive();
409 }
410 if (from.isBareJid()) {
411 contact.clearPresences();
412 } else {
413 contact.removePresence(from.getResource());
414 }
415 if (contact.getShownStatus() == Presence.Status.OFFLINE) {
416 contact.flagInactive();
417 }
418 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, false);
419 } else if (type.equals("subscribe")) {
420 if (contact.isBlocked()) {
421 Log.d(
422 Config.LOGTAG,
423 account.getJid().asBareJid()
424 + ": ignoring 'subscribe' presence from blocked "
425 + from);
426 return;
427 }
428 if (contact.setPresenceName(packet.findChildContent("nick", Namespace.NICK))) {
429 mXmppConnectionService.syncRoster(account);
430 mXmppConnectionService.getAvatarService().clear(contact);
431 }
432 if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
433 mXmppConnectionService.sendPresencePacket(
434 account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
435 } else {
436 contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
437 final Conversation conversation =
438 mXmppConnectionService.findOrCreateConversation(
439 account, contact.getJid().asBareJid(), false, false);
440 final String statusMessage = packet.findChildContent("status");
441 if (statusMessage != null
442 && !statusMessage.isEmpty()
443 && conversation.countMessages() == 0) {
444 conversation.add(
445 new Message(
446 conversation,
447 statusMessage,
448 Message.ENCRYPTION_NONE,
449 Message.STATUS_RECEIVED));
450 }
451 }
452 }
453 mXmppConnectionService.updateRosterUi();
454 }
455
456 @Override
457 public void accept(final im.conversations.android.xmpp.model.stanza.Presence packet) {
458 if (packet.hasChild("x", Namespace.MUC_USER)) {
459 this.parseConferencePresence(packet, account);
460 } else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
461 this.parseConferencePresence(packet, account);
462 } else if ("error".equals(packet.getAttribute("type"))
463 && mXmppConnectionService.isMuc(account, packet.getFrom())) {
464 this.parseConferencePresence(packet, account);
465 } else {
466 this.parseContactPresence(packet, account);
467 }
468 }
469}