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 final Element nick = packet.findChild("nick", Namespace.NICK);
73 Element hats = packet.findChild("hats", "urn:xmpp:hats:0");
74 if (hats == null) {
75 hats = packet.findChild("hats", "xmpp:prosody.im/protocol/hats:1");
76 }
77 if (hats == null) hats = new Element("hats", "urn:xmpp:hats:0");
78 final Element occupantIdEl = packet.findChild("occupant-id", "urn:xmpp:occupant-id:0");
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 MucOptions.User user = parseItem(conversation, item, from, occupantIdEl, nick == null ? null : nick.getContent(), hats);
87 final var occupant = packet.getExtension(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(conversation);
112 }
113 final var modified =
114 current == null || !current.equals(user.getFullJid());
115 mXmppConnectionService.persistSelfNick(user, modified);
116 invokeRenameListener(mucOptions, true);
117 }
118 boolean isNew = mucOptions.updateUser(user);
119 final AxolotlService axolotlService =
120 conversation.getAccount().getAxolotlService();
121 Contact contact = user.getContact();
122 if (isNew
123 && user.getRealJid() != null
124 && mucOptions.isPrivateAndNonAnonymous()
125 && (contact == null || !contact.mutualPresenceSubscription())
126 && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
127 axolotlService.fetchDeviceIds(user.getRealJid());
128 }
129 if (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
130 && mucOptions.autoPushConfiguration()) {
131 Log.d(
132 Config.LOGTAG,
133 account.getJid().asBareJid()
134 + ": room '"
135 + mucOptions.getConversation().getJid().asBareJid()
136 + "' created. pushing default configuration");
137 mXmppConnectionService.pushConferenceConfiguration(
138 mucOptions.getConversation(),
139 IqGenerator.defaultChannelConfiguration(),
140 null);
141 }
142 if (mXmppConnectionService.getPgpEngine() != null) {
143 Element signed = packet.findChild("x", "jabber:x:signed");
144 if (signed != null) {
145 Element status = packet.findChild("status");
146 String msg = status == null ? "" : status.getContent();
147 long keyId =
148 mXmppConnectionService
149 .getPgpEngine()
150 .fetchKeyId(
151 mucOptions.getAccount(),
152 msg,
153 signed.getContent());
154 if (keyId != 0) {
155 user.setPgpKeyId(keyId);
156 }
157 }
158 }
159 if (avatar != null) {
160 avatar.owner = from;
161 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
162 if (user.setAvatar(avatar)) {
163 mXmppConnectionService.getAvatarService().clear(user);
164 }
165 if (user.getRealJid() != null) {
166 final Contact c =
167 conversation
168 .getAccount()
169 .getRoster()
170 .getContact(user.getRealJid());
171 if (c.setAvatar(avatar)) {
172 mXmppConnectionService.syncRoster(
173 conversation.getAccount());
174 mXmppConnectionService.getAvatarService().clear(c);
175 }
176 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.AVATAR);
177 }
178 } else if (mXmppConnectionService.isDataSaverDisabled()) {
179 mXmppConnectionService.fetchAvatar(mucOptions.getAccount(), avatar);
180 }
181 }
182 }
183 }
184 } else if (type.equals("unavailable")) {
185 final boolean fullJidMatches = from.equals(mucOptions.getSelf().getFullJid());
186 if (x.hasChild("destroy") && fullJidMatches) {
187 Element destroy = x.findChild("destroy");
188 final Jid alternate =
189 destroy == null
190 ? null
191 : Jid.Invalid.getNullForInvalid(
192 destroy.getAttributeAsJid("jid"));
193 mucOptions.setError(MucOptions.Error.DESTROYED);
194 if (alternate != null) {
195 Log.d(
196 Config.LOGTAG,
197 account.getJid().asBareJid()
198 + ": muc destroyed. alternate location "
199 + alternate);
200 }
201 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN) && fullJidMatches) {
202 mucOptions.setError(MucOptions.Error.SHUTDOWN);
203 } else if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)) {
204 if (codes.contains(MucOptions.STATUS_CODE_TECHNICAL_REASONS)) {
205 final boolean wasOnline = mucOptions.online();
206 mucOptions.setError(MucOptions.Error.TECHNICAL_PROBLEMS);
207 Log.d(
208 Config.LOGTAG,
209 account.getJid().asBareJid()
210 + ": received status code 333 in room "
211 + mucOptions.getConversation().getJid().asBareJid()
212 + " online="
213 + wasOnline);
214 if (wasOnline) {
215 mXmppConnectionService.mucSelfPingAndRejoin(conversation);
216 }
217 } else if (codes.contains(MucOptions.STATUS_CODE_KICKED)) {
218 mucOptions.setError(MucOptions.Error.KICKED);
219 } else if (codes.contains(MucOptions.STATUS_CODE_BANNED)) {
220 mucOptions.setError(MucOptions.Error.BANNED);
221 } else if (codes.contains(MucOptions.STATUS_CODE_LOST_MEMBERSHIP)) {
222 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
223 } else if (codes.contains(MucOptions.STATUS_CODE_AFFILIATION_CHANGE)) {
224 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
225 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN)) {
226 mucOptions.setError(MucOptions.Error.SHUTDOWN);
227 } else if (!codes.contains(MucOptions.STATUS_CODE_CHANGED_NICK)) {
228 mucOptions.setError(MucOptions.Error.UNKNOWN);
229 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
230 }
231 } else if (!from.isBareJid()) {
232 Element item = x.findChild("item");
233 if (item != null) {
234 mucOptions.updateUser(parseItem(conversation, item, from, occupantIdEl, nick == null ? null : nick.getContent(), hats));
235 }
236 MucOptions.User user = mucOptions.deleteUser(from);
237 if (user != null && occupantIdEl == null) {
238 mXmppConnectionService.getAvatarService().clear(user);
239 }
240 }
241 } else if (type.equals("error")) {
242 final Element error = packet.findChild("error");
243 if (error == null) {
244 return;
245 }
246 if (error.hasChild("conflict")) {
247 if (mucOptions.online()) {
248 invokeRenameListener(mucOptions, false);
249 } else {
250 mucOptions.setError(MucOptions.Error.NICK_IN_USE);
251 }
252 } else if (error.hasChild("not-authorized")) {
253 mucOptions.setError(MucOptions.Error.PASSWORD_REQUIRED);
254 } else if (error.hasChild("forbidden")) {
255 mucOptions.setError(MucOptions.Error.BANNED);
256 } else if (error.hasChild("registration-required")) {
257 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
258 } else if (error.hasChild("resource-constraint")) {
259 mucOptions.setError(MucOptions.Error.RESOURCE_CONSTRAINT);
260 } else if (error.hasChild("remote-server-timeout")) {
261 mucOptions.setError(MucOptions.Error.REMOTE_SERVER_TIMEOUT);
262 } else if (error.hasChild("gone")) {
263 final String gone = error.findChildContent("gone");
264 final Jid alternate;
265 if (gone != null) {
266 final XmppUri xmppUri = new XmppUri(gone);
267 if (xmppUri.isValidJid()) {
268 alternate = xmppUri.getJid();
269 } else {
270 alternate = null;
271 }
272 } else {
273 alternate = null;
274 }
275 mucOptions.setError(MucOptions.Error.DESTROYED);
276 if (alternate != null) {
277 Log.d(
278 Config.LOGTAG,
279 conversation.getAccount().getJid().asBareJid()
280 + ": muc destroyed. alternate location "
281 + alternate);
282 }
283 } else {
284 final String text = error.findChildContent("text");
285 if (text != null && text.contains("attribute 'to'")) {
286 if (mucOptions.online()) {
287 invokeRenameListener(mucOptions, false);
288 } else {
289 mucOptions.setError(MucOptions.Error.INVALID_NICK);
290 }
291 } else {
292 mucOptions.setError(MucOptions.Error.UNKNOWN);
293 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
294 }
295 }
296 }
297 }
298 }
299
300 private static void invokeRenameListener(final MucOptions options, boolean success) {
301 if (options.onRenameListener != null) {
302 if (success) {
303 options.onRenameListener.onSuccess();
304 } else {
305 options.onRenameListener.onFailure();
306 }
307 options.onRenameListener = null;
308 }
309 }
310
311 private static List<String> getStatusCodes(Element x) {
312 List<String> codes = new ArrayList<>();
313 if (x != null) {
314 for (Element child : x.getChildren()) {
315 if (child.getName().equals("status")) {
316 String code = child.getAttribute("code");
317 if (code != null) {
318 codes.add(code);
319 }
320 }
321 }
322 }
323 return codes;
324 }
325
326 private void parseContactPresence(
327 final im.conversations.android.xmpp.model.stanza.Presence packet,
328 final Account account) {
329 final PresenceGenerator mPresenceGenerator = mXmppConnectionService.getPresenceGenerator();
330 final Jid from = packet.getFrom();
331 if (from == null || from.equals(account.getJid())) {
332 return;
333 }
334 final String type = packet.getAttribute("type");
335 final Contact contact = account.getRoster().getContact(from);
336 if (type == null) {
337 final String resource = from.isBareJid() ? "" : from.getResource();
338 final Avatar avatar =
339 Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
340 if (avatar != null && (!contact.isSelf() || account.getAvatar() == null)) {
341 avatar.owner = from.asBareJid();
342 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
343 if (avatar.owner.equals(account.getJid().asBareJid())) {
344 account.setAvatar(avatar.getFilename());
345 mXmppConnectionService.databaseBackend.updateAccount(account);
346 mXmppConnectionService.getAvatarService().clear(account);
347 mXmppConnectionService.updateConversationUi();
348 mXmppConnectionService.updateAccountUi();
349 } else {
350 if (contact.setAvatar(avatar)) {
351 mXmppConnectionService.syncRoster(account);
352 mXmppConnectionService.getAvatarService().clear(contact);
353 mXmppConnectionService.updateConversationUi();
354 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.AVATAR);
355 }
356 }
357 } else if (mXmppConnectionService.isDataSaverDisabled()) {
358 mXmppConnectionService.fetchAvatar(account, avatar);
359 }
360 }
361
362 if (mXmppConnectionService.isMuc(account, from)) {
363 return;
364 }
365
366 final int sizeBefore = contact.getPresences().size();
367
368 final String show = packet.findChildContent("show");
369 final Element caps = packet.findChild("c", "http://jabber.org/protocol/caps");
370 final String message = packet.findChildContent("status");
371 final Presence presence = Presence.parse(show, caps, message);
372 contact.updatePresence(resource, presence);
373 if (presence.hasCaps()) {
374 mXmppConnectionService.fetchCaps(account, from, presence);
375 }
376
377 final Element idle = packet.findChild("idle", Namespace.IDLE);
378 if (idle != null) {
379 try {
380 final String since = idle.getAttribute("since");
381 contact.setLastseen(AbstractParser.parseTimestamp(since));
382 contact.flagInactive();
383 } catch (Throwable throwable) {
384 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
385 contact.flagActive();
386 }
387 }
388 } else {
389 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
390 contact.flagActive();
391 }
392 }
393
394 final PgpEngine pgp = mXmppConnectionService.getPgpEngine();
395 final Element x = packet.findChild("x", "jabber:x:signed");
396 if (pgp != null && x != null) {
397 final String status = packet.findChildContent("status");
398 final long keyId = pgp.fetchKeyId(account, status, x.getContent());
399 if (keyId != 0 && contact.setPgpKeyId(keyId)) {
400 Log.d(
401 Config.LOGTAG,
402 account.getJid().asBareJid()
403 + ": found OpenPGP key id for "
404 + contact.getJid()
405 + " "
406 + OpenPgpUtils.convertKeyIdToHex(keyId));
407 mXmppConnectionService.syncRoster(account);
408 }
409 }
410 boolean online = sizeBefore < contact.getPresences().size();
411 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, online);
412 } else if (type.equals("unavailable")) {
413 if (contact.setLastseen(AbstractParser.parseTimestamp(packet, 0L, true))) {
414 contact.flagInactive();
415 }
416 if (from.isBareJid()) {
417 contact.clearPresences();
418 } else {
419 contact.removePresence(from.getResource());
420 }
421 if (contact.getShownStatus() == Presence.Status.OFFLINE) {
422 contact.flagInactive();
423 }
424 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, false);
425 } else if (type.equals("subscribe")) {
426 if (contact.isBlocked()) {
427 Log.d(
428 Config.LOGTAG,
429 account.getJid().asBareJid()
430 + ": ignoring 'subscribe' presence from blocked "
431 + from);
432 return;
433 }
434 if (contact.setPresenceName(packet.findChildContent("nick", Namespace.NICK))) {
435 mXmppConnectionService.syncRoster(account);
436 mXmppConnectionService.getAvatarService().clear(contact);
437 }
438 if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
439 mXmppConnectionService.sendPresencePacket(
440 account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
441 } else {
442 contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
443 final Conversation conversation =
444 mXmppConnectionService.findOrCreateConversation(
445 account, contact.getJid().asBareJid(), false, false);
446 final String statusMessage = packet.findChildContent("status");
447 if (statusMessage != null
448 && !statusMessage.isEmpty()
449 && conversation.countMessages() == 0) {
450 conversation.add(
451 new Message(
452 conversation,
453 statusMessage,
454 Message.ENCRYPTION_NONE,
455 Message.STATUS_RECEIVED));
456 }
457 }
458 }
459 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.PRESENCE, contact);
460 }
461
462 @Override
463 public void accept(final im.conversations.android.xmpp.model.stanza.Presence packet) {
464 if (packet.hasChild("x", Namespace.MUC_USER)) {
465 this.parseConferencePresence(packet, account);
466 } else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
467 this.parseConferencePresence(packet, account);
468 } else if ("error".equals(packet.getAttribute("type"))
469 && mXmppConnectionService.isMuc(account, packet.getFrom())) {
470 this.parseConferencePresence(packet, account);
471 } else {
472 this.parseContactPresence(packet, account);
473 }
474 }
475}