1package eu.siacs.conversations.parser;
2
3import android.util.Log;
4import eu.siacs.conversations.Config;
5import eu.siacs.conversations.crypto.PgpEngine;
6import eu.siacs.conversations.crypto.axolotl.AxolotlService;
7import eu.siacs.conversations.entities.Account;
8import eu.siacs.conversations.entities.Contact;
9import eu.siacs.conversations.entities.Conversation;
10import eu.siacs.conversations.entities.Message;
11import eu.siacs.conversations.entities.MucOptions;
12import eu.siacs.conversations.entities.Presence;
13import eu.siacs.conversations.generator.IqGenerator;
14import eu.siacs.conversations.generator.PresenceGenerator;
15import eu.siacs.conversations.services.XmppConnectionService;
16import eu.siacs.conversations.utils.XmppUri;
17import eu.siacs.conversations.xml.Element;
18import eu.siacs.conversations.xml.Namespace;
19import eu.siacs.conversations.xmpp.Jid;
20import eu.siacs.conversations.xmpp.pep.Avatar;
21import im.conversations.android.xmpp.model.occupant.OccupantId;
22import java.util.ArrayList;
23import java.util.List;
24import java.util.function.Consumer;
25import org.openintents.openpgp.util.OpenPgpUtils;
26
27public class PresenceParser extends AbstractParser
28 implements Consumer<im.conversations.android.xmpp.model.stanza.Presence> {
29
30 public PresenceParser(final XmppConnectionService service, final Account account) {
31 super(service, account);
32 }
33
34 public void parseConferencePresence(
35 final im.conversations.android.xmpp.model.stanza.Presence packet, Account account) {
36 final Conversation conversation =
37 packet.getFrom() == null
38 ? null
39 : mXmppConnectionService.find(account, packet.getFrom().asBareJid());
40 if (conversation != null) {
41 final MucOptions mucOptions = conversation.getMucOptions();
42 boolean before = mucOptions.online();
43 int count = mucOptions.getUserCount();
44 final List<MucOptions.User> tileUserBefore = mucOptions.getUsers(5);
45 processConferencePresence(packet, conversation);
46 final List<MucOptions.User> tileUserAfter = mucOptions.getUsers(5);
47 if (!tileUserAfter.equals(tileUserBefore)) {
48 mXmppConnectionService.getAvatarService().clear(mucOptions);
49 }
50 if (before != mucOptions.online()
51 || (mucOptions.online() && count != mucOptions.getUserCount())) {
52 mXmppConnectionService.updateConversationUi();
53 } else if (mucOptions.online()) {
54 mXmppConnectionService.updateMucRosterUi();
55 }
56 }
57 }
58
59 private void processConferencePresence(
60 final im.conversations.android.xmpp.model.stanza.Presence packet,
61 Conversation conversation) {
62 final Account account = conversation.getAccount();
63 final MucOptions mucOptions = conversation.getMucOptions();
64 final Jid jid = conversation.getAccount().getJid();
65 final Jid from = packet.getFrom();
66 if (!from.isBareJid()) {
67 final String type = packet.getAttribute("type");
68 final Element x = packet.findChild("x", Namespace.MUC_USER);
69 Avatar avatar = Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
70 final List<String> codes = getStatusCodes(x);
71 if (type == null) {
72 if (x != null) {
73 Element item = x.findChild("item");
74 if (item != null && !from.isBareJid()) {
75 mucOptions.setError(MucOptions.Error.NONE);
76 final MucOptions.User user = parseItem(conversation, item, from);
77 final var occupant = packet.getExtension(OccupantId.class);
78 final String occupantId =
79 mucOptions.occupantId() && occupant != null
80 ? occupant.getId()
81 : null;
82 user.setOccupantId(occupantId);
83 if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)
84 || (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
85 && jid.equals(
86 Jid.Invalid.getNullForInvalid(
87 item.getAttributeAsJid("jid"))))) {
88 if (mucOptions.setOnline()) {
89 mXmppConnectionService.getAvatarService().clear(mucOptions);
90 }
91 final var current = mucOptions.getSelf().getFullJid();
92 if (mucOptions.setSelf(user)) {
93 Log.d(Config.LOGTAG, "role or affiliation changed");
94 mXmppConnectionService.databaseBackend.updateConversation(
95 conversation);
96 }
97 final var modified =
98 current == null || !current.equals(user.getFullJid());
99 mXmppConnectionService.persistSelfNick(user, modified);
100 invokeRenameListener(mucOptions, true);
101 }
102 boolean isNew = mucOptions.updateUser(user);
103 final AxolotlService axolotlService =
104 conversation.getAccount().getAxolotlService();
105 Contact contact = user.getContact();
106 if (isNew
107 && user.getRealJid() != null
108 && mucOptions.isPrivateAndNonAnonymous()
109 && (contact == null || !contact.mutualPresenceSubscription())
110 && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
111 axolotlService.fetchDeviceIds(user.getRealJid());
112 }
113 if (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
114 && mucOptions.autoPushConfiguration()) {
115 Log.d(
116 Config.LOGTAG,
117 account.getJid().asBareJid()
118 + ": room '"
119 + mucOptions.getConversation().getJid().asBareJid()
120 + "' created. pushing default configuration");
121 mXmppConnectionService.pushConferenceConfiguration(
122 mucOptions.getConversation(),
123 IqGenerator.defaultChannelConfiguration(),
124 null);
125 }
126 if (mXmppConnectionService.getPgpEngine() != null) {
127 Element signed = packet.findChild("x", "jabber:x:signed");
128 if (signed != null) {
129 Element status = packet.findChild("status");
130 String msg = status == null ? "" : status.getContent();
131 long keyId =
132 mXmppConnectionService
133 .getPgpEngine()
134 .fetchKeyId(
135 mucOptions.getAccount(),
136 msg,
137 signed.getContent());
138 if (keyId != 0) {
139 user.setPgpKeyId(keyId);
140 }
141 }
142 }
143 if (avatar != null) {
144 avatar.owner = from;
145 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
146 if (user.setAvatar(avatar)) {
147 mXmppConnectionService.getAvatarService().clear(user);
148 }
149 if (user.getRealJid() != null) {
150 final Contact c =
151 conversation
152 .getAccount()
153 .getRoster()
154 .getContact(user.getRealJid());
155 c.setAvatar(avatar);
156 mXmppConnectionService.syncRoster(conversation.getAccount());
157 mXmppConnectionService.getAvatarService().clear(c);
158 mXmppConnectionService.updateRosterUi();
159 }
160 } else if (mXmppConnectionService.isDataSaverDisabled()) {
161 mXmppConnectionService.fetchAvatar(mucOptions.getAccount(), avatar);
162 }
163 }
164 }
165 }
166 } else if (type.equals("unavailable")) {
167 final boolean fullJidMatches = from.equals(mucOptions.getSelf().getFullJid());
168 if (x.hasChild("destroy") && fullJidMatches) {
169 Element destroy = x.findChild("destroy");
170 final Jid alternate =
171 destroy == null
172 ? null
173 : Jid.Invalid.getNullForInvalid(
174 destroy.getAttributeAsJid("jid"));
175 mucOptions.setError(MucOptions.Error.DESTROYED);
176 if (alternate != null) {
177 Log.d(
178 Config.LOGTAG,
179 account.getJid().asBareJid()
180 + ": muc destroyed. alternate location "
181 + alternate);
182 }
183 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN) && fullJidMatches) {
184 mucOptions.setError(MucOptions.Error.SHUTDOWN);
185 } else if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)) {
186 if (codes.contains(MucOptions.STATUS_CODE_TECHNICAL_REASONS)) {
187 final boolean wasOnline = mucOptions.online();
188 mucOptions.setError(MucOptions.Error.TECHNICAL_PROBLEMS);
189 Log.d(
190 Config.LOGTAG,
191 account.getJid().asBareJid()
192 + ": received status code 333 in room "
193 + mucOptions.getConversation().getJid().asBareJid()
194 + " online="
195 + wasOnline);
196 if (wasOnline) {
197 mXmppConnectionService.mucSelfPingAndRejoin(conversation);
198 }
199 } else if (codes.contains(MucOptions.STATUS_CODE_KICKED)) {
200 mucOptions.setError(MucOptions.Error.KICKED);
201 } else if (codes.contains(MucOptions.STATUS_CODE_BANNED)) {
202 mucOptions.setError(MucOptions.Error.BANNED);
203 } else if (codes.contains(MucOptions.STATUS_CODE_LOST_MEMBERSHIP)) {
204 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
205 } else if (codes.contains(MucOptions.STATUS_CODE_AFFILIATION_CHANGE)) {
206 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
207 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN)) {
208 mucOptions.setError(MucOptions.Error.SHUTDOWN);
209 } else if (!codes.contains(MucOptions.STATUS_CODE_CHANGED_NICK)) {
210 mucOptions.setError(MucOptions.Error.UNKNOWN);
211 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
212 }
213 } else if (!from.isBareJid()) {
214 Element item = x.findChild("item");
215 if (item != null) {
216 mucOptions.updateUser(parseItem(conversation, item, from));
217 }
218 MucOptions.User user = mucOptions.deleteUser(from);
219 if (user != null) {
220 mXmppConnectionService.getAvatarService().clear(user);
221 }
222 }
223 } else if (type.equals("error")) {
224 final Element error = packet.findChild("error");
225 if (error == null) {
226 return;
227 }
228 if (error.hasChild("conflict")) {
229 if (mucOptions.online()) {
230 invokeRenameListener(mucOptions, false);
231 } else {
232 mucOptions.setError(MucOptions.Error.NICK_IN_USE);
233 }
234 } else if (error.hasChild("not-authorized")) {
235 mucOptions.setError(MucOptions.Error.PASSWORD_REQUIRED);
236 } else if (error.hasChild("forbidden")) {
237 mucOptions.setError(MucOptions.Error.BANNED);
238 } else if (error.hasChild("registration-required")) {
239 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
240 } else if (error.hasChild("resource-constraint")) {
241 mucOptions.setError(MucOptions.Error.RESOURCE_CONSTRAINT);
242 } else if (error.hasChild("remote-server-timeout")) {
243 mucOptions.setError(MucOptions.Error.REMOTE_SERVER_TIMEOUT);
244 } else if (error.hasChild("gone")) {
245 final String gone = error.findChildContent("gone");
246 final Jid alternate;
247 if (gone != null) {
248 final XmppUri xmppUri = new XmppUri(gone);
249 if (xmppUri.isValidJid()) {
250 alternate = xmppUri.getJid();
251 } else {
252 alternate = null;
253 }
254 } else {
255 alternate = null;
256 }
257 mucOptions.setError(MucOptions.Error.DESTROYED);
258 if (alternate != null) {
259 Log.d(
260 Config.LOGTAG,
261 conversation.getAccount().getJid().asBareJid()
262 + ": muc destroyed. alternate location "
263 + alternate);
264 }
265 } else {
266 final String text = error.findChildContent("text");
267 if (text != null && text.contains("attribute 'to'")) {
268 if (mucOptions.online()) {
269 invokeRenameListener(mucOptions, false);
270 } else {
271 mucOptions.setError(MucOptions.Error.INVALID_NICK);
272 }
273 } else {
274 mucOptions.setError(MucOptions.Error.UNKNOWN);
275 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
276 }
277 }
278 }
279 }
280 }
281
282 private static void invokeRenameListener(final MucOptions options, boolean success) {
283 if (options.onRenameListener != null) {
284 if (success) {
285 options.onRenameListener.onSuccess();
286 } else {
287 options.onRenameListener.onFailure();
288 }
289 options.onRenameListener = null;
290 }
291 }
292
293 private static List<String> getStatusCodes(Element x) {
294 List<String> codes = new ArrayList<>();
295 if (x != null) {
296 for (Element child : x.getChildren()) {
297 if (child.getName().equals("status")) {
298 String code = child.getAttribute("code");
299 if (code != null) {
300 codes.add(code);
301 }
302 }
303 }
304 }
305 return codes;
306 }
307
308 private void parseContactPresence(
309 final im.conversations.android.xmpp.model.stanza.Presence packet,
310 final Account account) {
311 final PresenceGenerator mPresenceGenerator = mXmppConnectionService.getPresenceGenerator();
312 final Jid from = packet.getFrom();
313 if (from == null || from.equals(account.getJid())) {
314 return;
315 }
316 final String type = packet.getAttribute("type");
317 final Contact contact = account.getRoster().getContact(from);
318 if (type == null) {
319 final String resource = from.isBareJid() ? "" : from.getResource();
320 final Avatar avatar =
321 Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
322 if (avatar != null && (!contact.isSelf() || account.getAvatar() == null)) {
323 avatar.owner = from.asBareJid();
324 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
325 if (avatar.owner.equals(account.getJid().asBareJid())) {
326 account.setAvatar(avatar.getFilename());
327 mXmppConnectionService.databaseBackend.updateAccount(account);
328 mXmppConnectionService.getAvatarService().clear(account);
329 mXmppConnectionService.updateConversationUi();
330 mXmppConnectionService.updateAccountUi();
331 } else {
332 contact.setAvatar(avatar);
333 mXmppConnectionService.syncRoster(account);
334 mXmppConnectionService.getAvatarService().clear(contact);
335 mXmppConnectionService.updateConversationUi();
336 mXmppConnectionService.updateRosterUi();
337 }
338 } else if (mXmppConnectionService.isDataSaverDisabled()) {
339 mXmppConnectionService.fetchAvatar(account, avatar);
340 }
341 }
342
343 if (mXmppConnectionService.isMuc(account, from)) {
344 return;
345 }
346
347 final int sizeBefore = contact.getPresences().size();
348
349 final String show = packet.findChildContent("show");
350 final Element caps = packet.findChild("c", "http://jabber.org/protocol/caps");
351 final String message = packet.findChildContent("status");
352 final Presence presence = Presence.parse(show, caps, message);
353 contact.updatePresence(resource, presence);
354 if (presence.hasCaps()) {
355 mXmppConnectionService.fetchCaps(account, from, presence);
356 }
357
358 final Element idle = packet.findChild("idle", Namespace.IDLE);
359 if (idle != null) {
360 try {
361 final String since = idle.getAttribute("since");
362 contact.setLastseen(AbstractParser.parseTimestamp(since));
363 contact.flagInactive();
364 } catch (Throwable throwable) {
365 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
366 contact.flagActive();
367 }
368 }
369 } else {
370 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
371 contact.flagActive();
372 }
373 }
374
375 final PgpEngine pgp = mXmppConnectionService.getPgpEngine();
376 final Element x = packet.findChild("x", "jabber:x:signed");
377 if (pgp != null && x != null) {
378 final String status = packet.findChildContent("status");
379 final long keyId = pgp.fetchKeyId(account, status, x.getContent());
380 if (keyId != 0 && contact.setPgpKeyId(keyId)) {
381 Log.d(
382 Config.LOGTAG,
383 account.getJid().asBareJid()
384 + ": found OpenPGP key id for "
385 + contact.getJid()
386 + " "
387 + OpenPgpUtils.convertKeyIdToHex(keyId));
388 mXmppConnectionService.syncRoster(account);
389 }
390 }
391 boolean online = sizeBefore < contact.getPresences().size();
392 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, online);
393 } else if (type.equals("unavailable")) {
394 if (contact.setLastseen(AbstractParser.parseTimestamp(packet, 0L, true))) {
395 contact.flagInactive();
396 }
397 if (from.isBareJid()) {
398 contact.clearPresences();
399 } else {
400 contact.removePresence(from.getResource());
401 }
402 if (contact.getShownStatus() == Presence.Status.OFFLINE) {
403 contact.flagInactive();
404 }
405 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, false);
406 } else if (type.equals("subscribe")) {
407 if (contact.isBlocked()) {
408 Log.d(
409 Config.LOGTAG,
410 account.getJid().asBareJid()
411 + ": ignoring 'subscribe' presence from blocked "
412 + from);
413 return;
414 }
415 if (contact.setPresenceName(packet.findChildContent("nick", Namespace.NICK))) {
416 mXmppConnectionService.syncRoster(account);
417 mXmppConnectionService.getAvatarService().clear(contact);
418 }
419 if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
420 mXmppConnectionService.sendPresencePacket(
421 account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
422 } else {
423 contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
424 final Conversation conversation =
425 mXmppConnectionService.findOrCreateConversation(
426 account, contact.getJid().asBareJid(), false, false);
427 final String statusMessage = packet.findChildContent("status");
428 if (statusMessage != null
429 && !statusMessage.isEmpty()
430 && conversation.countMessages() == 0) {
431 conversation.add(
432 new Message(
433 conversation,
434 statusMessage,
435 Message.ENCRYPTION_NONE,
436 Message.STATUS_RECEIVED));
437 }
438 }
439 }
440 mXmppConnectionService.updateRosterUi();
441 }
442
443 @Override
444 public void accept(final im.conversations.android.xmpp.model.stanza.Presence packet) {
445 if (packet.hasChild("x", Namespace.MUC_USER)) {
446 this.parseConferencePresence(packet, account);
447 } else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
448 this.parseConferencePresence(packet, account);
449 } else if ("error".equals(packet.getAttribute("type"))
450 && mXmppConnectionService.isMuc(account, packet.getFrom())) {
451 this.parseConferencePresence(packet, account);
452 } else {
453 this.parseContactPresence(packet, account);
454 }
455 }
456}