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 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(conversation);
105 }
106 final var modified =
107 current == null || !current.equals(user.getFullJid());
108 mXmppConnectionService.persistSelfNick(user, modified);
109 invokeRenameListener(mucOptions, true);
110 }
111 boolean isNew = mucOptions.updateUser(user);
112 final AxolotlService axolotlService =
113 conversation.getAccount().getAxolotlService();
114 Contact contact = user.getContact();
115 if (isNew
116 && user.getRealJid() != null
117 && mucOptions.isPrivateAndNonAnonymous()
118 && (contact == null || !contact.mutualPresenceSubscription())
119 && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
120 axolotlService.fetchDeviceIds(user.getRealJid());
121 }
122 if (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
123 && mucOptions.autoPushConfiguration()) {
124 Log.d(
125 Config.LOGTAG,
126 account.getJid().asBareJid()
127 + ": room '"
128 + mucOptions.getConversation().getJid().asBareJid()
129 + "' created. pushing default configuration");
130 mXmppConnectionService.pushConferenceConfiguration(
131 mucOptions.getConversation(),
132 IqGenerator.defaultChannelConfiguration(),
133 null);
134 }
135 if (mXmppConnectionService.getPgpEngine() != null) {
136 Element signed = packet.findChild("x", "jabber:x:signed");
137 if (signed != null) {
138 Element status = packet.findChild("status");
139 String msg = status == null ? "" : status.getContent();
140 long keyId =
141 mXmppConnectionService
142 .getPgpEngine()
143 .fetchKeyId(
144 mucOptions.getAccount(),
145 msg,
146 signed.getContent());
147 if (keyId != 0) {
148 user.setPgpKeyId(keyId);
149 }
150 }
151 }
152 if (avatar != null) {
153 avatar.owner = from;
154 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
155 if (user.setAvatar(avatar)) {
156 mXmppConnectionService.getAvatarService().clear(user);
157 }
158 if (user.getRealJid() != null) {
159 final Contact c =
160 conversation
161 .getAccount()
162 .getRoster()
163 .getContact(user.getRealJid());
164 if (c.setAvatar(avatar)) {
165 mXmppConnectionService.syncRoster(
166 conversation.getAccount());
167 mXmppConnectionService.getAvatarService().clear(c);
168 }
169 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.AVATAR);
170 }
171 } else if (mXmppConnectionService.isDataSaverDisabled()) {
172 mXmppConnectionService.fetchAvatar(mucOptions.getAccount(), avatar);
173 }
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 mXmppConnectionService.mucSelfPingAndRejoin(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 Element item = x.findChild("item");
226 if (item != null) {
227 mucOptions.updateUser(parseItem(conversation, item, from, occupantIdEl, nick == null ? null : nick.getContent(), hats));
228 }
229 MucOptions.User user = mucOptions.deleteUser(from);
230 if (user != null && occupantIdEl == null) {
231 mXmppConnectionService.getAvatarService().clear(user);
232 }
233 }
234 } else if (type.equals("error")) {
235 final Element error = packet.findChild("error");
236 if (error == null) {
237 return;
238 }
239 if (error.hasChild("conflict")) {
240 if (mucOptions.online()) {
241 invokeRenameListener(mucOptions, false);
242 } else {
243 mucOptions.setError(MucOptions.Error.NICK_IN_USE);
244 }
245 } else if (error.hasChild("not-authorized")) {
246 mucOptions.setError(MucOptions.Error.PASSWORD_REQUIRED);
247 } else if (error.hasChild("forbidden")) {
248 mucOptions.setError(MucOptions.Error.BANNED);
249 } else if (error.hasChild("registration-required")) {
250 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
251 } else if (error.hasChild("resource-constraint")) {
252 mucOptions.setError(MucOptions.Error.RESOURCE_CONSTRAINT);
253 } else if (error.hasChild("remote-server-timeout")) {
254 mucOptions.setError(MucOptions.Error.REMOTE_SERVER_TIMEOUT);
255 } else if (error.hasChild("gone")) {
256 final String gone = error.findChildContent("gone");
257 final Jid alternate;
258 if (gone != null) {
259 final XmppUri xmppUri = new XmppUri(gone);
260 if (xmppUri.isValidJid()) {
261 alternate = xmppUri.getJid();
262 } else {
263 alternate = null;
264 }
265 } else {
266 alternate = null;
267 }
268 mucOptions.setError(MucOptions.Error.DESTROYED);
269 if (alternate != null) {
270 Log.d(
271 Config.LOGTAG,
272 conversation.getAccount().getJid().asBareJid()
273 + ": muc destroyed. alternate location "
274 + alternate);
275 }
276 } else {
277 final String text = error.findChildContent("text");
278 if (text != null && text.contains("attribute 'to'")) {
279 if (mucOptions.online()) {
280 invokeRenameListener(mucOptions, false);
281 } else {
282 mucOptions.setError(MucOptions.Error.INVALID_NICK);
283 }
284 } else {
285 mucOptions.setError(MucOptions.Error.UNKNOWN);
286 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
287 }
288 }
289 }
290 }
291 }
292
293 private static void invokeRenameListener(final MucOptions options, boolean success) {
294 if (options.onRenameListener != null) {
295 if (success) {
296 options.onRenameListener.onSuccess();
297 } else {
298 options.onRenameListener.onFailure();
299 }
300 options.onRenameListener = null;
301 }
302 }
303
304 private static List<String> getStatusCodes(Element x) {
305 List<String> codes = new ArrayList<>();
306 if (x != null) {
307 for (Element child : x.getChildren()) {
308 if (child.getName().equals("status")) {
309 String code = child.getAttribute("code");
310 if (code != null) {
311 codes.add(code);
312 }
313 }
314 }
315 }
316 return codes;
317 }
318
319 private void parseContactPresence(
320 final im.conversations.android.xmpp.model.stanza.Presence packet,
321 final Account account) {
322 final PresenceGenerator mPresenceGenerator = mXmppConnectionService.getPresenceGenerator();
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 final Avatar avatar =
332 Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
333 if (avatar != null && (!contact.isSelf() || account.getAvatar() == null)) {
334 avatar.owner = from.asBareJid();
335 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
336 if (avatar.owner.equals(account.getJid().asBareJid())) {
337 account.setAvatar(avatar.getFilename());
338 mXmppConnectionService.databaseBackend.updateAccount(account);
339 mXmppConnectionService.getAvatarService().clear(account);
340 mXmppConnectionService.updateConversationUi();
341 mXmppConnectionService.updateAccountUi();
342 } else {
343 if (contact.setAvatar(avatar)) {
344 mXmppConnectionService.syncRoster(account);
345 mXmppConnectionService.getAvatarService().clear(contact);
346 mXmppConnectionService.updateConversationUi();
347 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.AVATAR);
348 }
349 }
350 } else if (mXmppConnectionService.isDataSaverDisabled()) {
351 mXmppConnectionService.fetchAvatar(account, avatar);
352 }
353 }
354
355 if (mXmppConnectionService.isMuc(account, from)) {
356 return;
357 }
358
359 final int sizeBefore = contact.getPresences().size();
360
361 final String show = packet.findChildContent("show");
362 final Element caps = packet.findChild("c", "http://jabber.org/protocol/caps");
363 final String message = packet.findChildContent("status");
364 final Presence presence = Presence.parse(show, caps, message);
365 contact.updatePresence(resource, presence);
366 if (presence.hasCaps()) {
367 mXmppConnectionService.fetchCaps(account, from, presence);
368 }
369
370 final Element idle = packet.findChild("idle", Namespace.IDLE);
371 if (idle != null) {
372 try {
373 final String since = idle.getAttribute("since");
374 contact.setLastseen(AbstractParser.parseTimestamp(since));
375 contact.flagInactive();
376 } catch (Throwable throwable) {
377 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
378 contact.flagActive();
379 }
380 }
381 } else {
382 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
383 contact.flagActive();
384 }
385 }
386
387 final PgpEngine pgp = mXmppConnectionService.getPgpEngine();
388 final Element x = packet.findChild("x", "jabber:x:signed");
389 if (pgp != null && x != null) {
390 final String status = packet.findChildContent("status");
391 final long keyId = pgp.fetchKeyId(account, status, x.getContent());
392 if (keyId != 0 && contact.setPgpKeyId(keyId)) {
393 Log.d(
394 Config.LOGTAG,
395 account.getJid().asBareJid()
396 + ": found OpenPGP key id for "
397 + contact.getJid()
398 + " "
399 + OpenPgpUtils.convertKeyIdToHex(keyId));
400 mXmppConnectionService.syncRoster(account);
401 }
402 }
403 boolean online = sizeBefore < contact.getPresences().size();
404 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, online);
405 } else if (type.equals("unavailable")) {
406 if (contact.setLastseen(AbstractParser.parseTimestamp(packet, 0L, true))) {
407 contact.flagInactive();
408 }
409 if (from.isBareJid()) {
410 contact.clearPresences();
411 } else {
412 contact.removePresence(from.getResource());
413 }
414 if (contact.getShownStatus() == Presence.Status.OFFLINE) {
415 contact.flagInactive();
416 }
417 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, false);
418 } else if (type.equals("subscribe")) {
419 if (contact.isBlocked()) {
420 Log.d(
421 Config.LOGTAG,
422 account.getJid().asBareJid()
423 + ": ignoring 'subscribe' presence from blocked "
424 + from);
425 return;
426 }
427 if (contact.setPresenceName(packet.findChildContent("nick", Namespace.NICK))) {
428 mXmppConnectionService.syncRoster(account);
429 mXmppConnectionService.getAvatarService().clear(contact);
430 }
431 if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
432 mXmppConnectionService.sendPresencePacket(
433 account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
434 } else {
435 contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
436 final Conversation conversation =
437 mXmppConnectionService.findOrCreateConversation(
438 account, contact.getJid().asBareJid(), false, false);
439 final String statusMessage = packet.findChildContent("status");
440 if (statusMessage != null
441 && !statusMessage.isEmpty()
442 && conversation.countMessages() == 0) {
443 conversation.add(
444 new Message(
445 conversation,
446 statusMessage,
447 Message.ENCRYPTION_NONE,
448 Message.STATUS_RECEIVED));
449 }
450 }
451 }
452 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.PRESENCE, contact);
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, account);
459 } else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
460 this.parseConferencePresence(packet, account);
461 } else if ("error".equals(packet.getAttribute("type"))
462 && mXmppConnectionService.isMuc(account, packet.getFrom())) {
463 this.parseConferencePresence(packet, account);
464 } else {
465 this.parseContactPresence(packet, account);
466 }
467 }
468}