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.getExtension(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 if (mucOptions.setOnline()) {
92 mXmppConnectionService.getAvatarService().clear(mucOptions);
93 }
94 final var current = mucOptions.getSelf().getFullJid();
95 if (mucOptions.setSelf(user)) {
96 Log.d(Config.LOGTAG, "role or affiliation changed");
97 mXmppConnectionService.databaseBackend.updateConversation(
98 conversation);
99 }
100 final var modified =
101 current == null || !current.equals(user.getFullJid());
102 mXmppConnectionService.persistSelfNick(user, modified);
103 invokeRenameListener(mucOptions, true);
104 }
105 boolean isNew = mucOptions.updateUser(user);
106 final AxolotlService axolotlService =
107 conversation.getAccount().getAxolotlService();
108 Contact contact = user.getContact();
109 if (isNew
110 && user.getRealJid() != null
111 && mucOptions.isPrivateAndNonAnonymous()
112 && (contact == null || !contact.mutualPresenceSubscription())
113 && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
114 axolotlService.fetchDeviceIds(user.getRealJid());
115 }
116 if (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
117 && mucOptions.autoPushConfiguration()) {
118 Log.d(
119 Config.LOGTAG,
120 account.getJid().asBareJid()
121 + ": room '"
122 + mucOptions.getConversation().getJid().asBareJid()
123 + "' created. pushing default configuration");
124 mXmppConnectionService.pushConferenceConfiguration(
125 mucOptions.getConversation(),
126 IqGenerator.defaultChannelConfiguration(),
127 null);
128 }
129 if (mXmppConnectionService.getPgpEngine() != null) {
130 Element signed = packet.findChild("x", "jabber:x:signed");
131 if (signed != null) {
132 Element status = packet.findChild("status");
133 String msg = status == null ? "" : status.getContent();
134 long keyId =
135 mXmppConnectionService
136 .getPgpEngine()
137 .fetchKeyId(
138 mucOptions.getAccount(),
139 msg,
140 signed.getContent());
141 if (keyId != 0) {
142 user.setPgpKeyId(keyId);
143 }
144 }
145 }
146 if (avatar != null) {
147 avatar.owner = from;
148 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
149 if (user.setAvatar(avatar)) {
150 mXmppConnectionService.getAvatarService().clear(user);
151 }
152 if (user.getRealJid() != null) {
153 final Contact c =
154 conversation
155 .getAccount()
156 .getRoster()
157 .getContact(user.getRealJid());
158 if (c.setAvatar(avatar)) {
159 mXmppConnectionService.syncRoster(
160 conversation.getAccount());
161 mXmppConnectionService.getAvatarService().clear(c);
162 }
163 mXmppConnectionService.updateRosterUi();
164 }
165 } else if (mXmppConnectionService.isDataSaverDisabled()) {
166 mXmppConnectionService.fetchAvatar(mucOptions.getAccount(), avatar);
167 }
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 Account account) {
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 final Avatar avatar =
326 Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
327 if (avatar != null && (!contact.isSelf() || account.getAvatar() == null)) {
328 avatar.owner = from.asBareJid();
329 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
330 if (avatar.owner.equals(account.getJid().asBareJid())) {
331 account.setAvatar(avatar.getFilename());
332 mXmppConnectionService.databaseBackend.updateAccount(account);
333 mXmppConnectionService.getAvatarService().clear(account);
334 mXmppConnectionService.updateConversationUi();
335 mXmppConnectionService.updateAccountUi();
336 } else {
337 if (contact.setAvatar(avatar)) {
338 mXmppConnectionService.syncRoster(account);
339 mXmppConnectionService.getAvatarService().clear(contact);
340 mXmppConnectionService.updateConversationUi();
341 mXmppConnectionService.updateRosterUi();
342 }
343 }
344 } else if (mXmppConnectionService.isDataSaverDisabled()) {
345 mXmppConnectionService.fetchAvatar(account, avatar);
346 }
347 }
348
349 if (mXmppConnectionService.isMuc(account, from)) {
350 return;
351 }
352
353 final int sizeBefore = contact.getPresences().size();
354
355 final String show = packet.findChildContent("show");
356 final Element caps = packet.findChild("c", "http://jabber.org/protocol/caps");
357 final String message = packet.findChildContent("status");
358 final Presence presence = Presence.parse(show, caps, message);
359 contact.updatePresence(resource, presence);
360 if (presence.hasCaps()) {
361 mXmppConnectionService.fetchCaps(account, from, presence);
362 }
363
364 final Element idle = packet.findChild("idle", Namespace.IDLE);
365 if (idle != null) {
366 try {
367 final String since = idle.getAttribute("since");
368 contact.setLastseen(AbstractParser.parseTimestamp(since));
369 contact.flagInactive();
370 } catch (Throwable throwable) {
371 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
372 contact.flagActive();
373 }
374 }
375 } else {
376 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
377 contact.flagActive();
378 }
379 }
380
381 final PgpEngine pgp = mXmppConnectionService.getPgpEngine();
382 final Element x = packet.findChild("x", "jabber:x:signed");
383 if (pgp != null && x != null) {
384 final String status = packet.findChildContent("status");
385 final long keyId = pgp.fetchKeyId(account, status, x.getContent());
386 if (keyId != 0 && contact.setPgpKeyId(keyId)) {
387 Log.d(
388 Config.LOGTAG,
389 account.getJid().asBareJid()
390 + ": found OpenPGP key id for "
391 + contact.getJid()
392 + " "
393 + OpenPgpUtils.convertKeyIdToHex(keyId));
394 mXmppConnectionService.syncRoster(account);
395 }
396 }
397 boolean online = sizeBefore < contact.getPresences().size();
398 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, online);
399 } else if (type.equals("unavailable")) {
400 if (contact.setLastseen(AbstractParser.parseTimestamp(packet, 0L, true))) {
401 contact.flagInactive();
402 }
403 if (from.isBareJid()) {
404 contact.clearPresences();
405 } else {
406 contact.removePresence(from.getResource());
407 }
408 if (contact.getShownStatus() == Presence.Status.OFFLINE) {
409 contact.flagInactive();
410 }
411 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, false);
412 } else if (type.equals("subscribe")) {
413 if (contact.isBlocked()) {
414 Log.d(
415 Config.LOGTAG,
416 account.getJid().asBareJid()
417 + ": ignoring 'subscribe' presence from blocked "
418 + from);
419 return;
420 }
421 if (contact.setPresenceName(packet.findChildContent("nick", Namespace.NICK))) {
422 mXmppConnectionService.syncRoster(account);
423 mXmppConnectionService.getAvatarService().clear(contact);
424 }
425 if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
426 mXmppConnectionService.sendPresencePacket(
427 account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
428 } else {
429 contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
430 final Conversation conversation =
431 mXmppConnectionService.findOrCreateConversation(
432 account, contact.getJid().asBareJid(), false, false);
433 final String statusMessage = packet.findChildContent("status");
434 if (statusMessage != null
435 && !statusMessage.isEmpty()
436 && conversation.countMessages() == 0) {
437 conversation.add(
438 new Message(
439 conversation,
440 statusMessage,
441 Message.ENCRYPTION_NONE,
442 Message.STATUS_RECEIVED));
443 }
444 }
445 }
446 mXmppConnectionService.updateRosterUi();
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, account);
453 } else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
454 this.parseConferencePresence(packet, account);
455 } else if ("error".equals(packet.getAttribute("type"))
456 && mXmppConnectionService.isMuc(account, packet.getFrom())) {
457 this.parseConferencePresence(packet, account);
458 } else {
459 this.parseContactPresence(packet, account);
460 }
461 }
462}