1package eu.siacs.conversations.parser;
2
3import android.util.Log;
4
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.InvalidJid;
21import eu.siacs.conversations.xmpp.Jid;
22import eu.siacs.conversations.xmpp.pep.Avatar;
23import im.conversations.android.xmpp.model.occupant.OccupantId;
24
25import org.openintents.openpgp.util.OpenPgpUtils;
26
27import java.util.ArrayList;
28import java.util.List;
29import java.util.function.Consumer;
30
31public class PresenceParser extends AbstractParser implements Consumer<im.conversations.android.xmpp.model.stanza.Presence> {
32
33 public PresenceParser(final XmppConnectionService service, final Account account) {
34 super(service, account);
35 }
36
37 public void parseConferencePresence(final im.conversations.android.xmpp.model.stanza.Presence packet, Account account) {
38 final Conversation conversation =
39 packet.getFrom() == null
40 ? null
41 : mXmppConnectionService.find(account, packet.getFrom().asBareJid());
42 if (conversation != null) {
43 final MucOptions mucOptions = conversation.getMucOptions();
44 boolean before = mucOptions.online();
45 int count = mucOptions.getUserCount();
46 final List<MucOptions.User> tileUserBefore = mucOptions.getUsers(5);
47 processConferencePresence(packet, conversation);
48 final List<MucOptions.User> tileUserAfter = mucOptions.getUsers(5);
49 if (!tileUserAfter.equals(tileUserBefore)) {
50 mXmppConnectionService.getAvatarService().clear(mucOptions);
51 }
52 if (before != mucOptions.online()
53 || (mucOptions.online() && count != mucOptions.getUserCount())) {
54 mXmppConnectionService.updateConversationUi();
55 } else if (mucOptions.online()) {
56 mXmppConnectionService.updateMucRosterUi();
57 }
58 }
59 }
60
61 private void processConferencePresence(final im.conversations.android.xmpp.model.stanza.Presence packet, 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 final Element nick = packet.findChild("nick", Namespace.NICK);
70 Element hats = packet.findChild("hats", "urn:xmpp:hats:0");
71 if (hats == null) {
72 hats = packet.findChild("hats", "xmpp:prosody.im/protocol/hats:1");
73 }
74 if (hats == null) hats = new Element("hats", "urn:xmpp:hats:0");
75 final Element occupantIdEl = packet.findChild("occupant-id", "urn:xmpp:occupant-id:0");
76 Avatar avatar = Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
77 final List<String> codes = getStatusCodes(x);
78 if (type == null) {
79 if (x != null) {
80 Element item = x.findChild("item");
81 if (item != null && !from.isBareJid()) {
82 mucOptions.setError(MucOptions.Error.NONE);
83 MucOptions.User user = parseItem(conversation, item, from, occupantIdEl, nick == null ? null : nick.getContent(), hats);
84 final var occupant = packet.getExtension(OccupantId.class);
85 final String occupantId = mucOptions.occupantId() && occupant != null ? occupant.getId() : null;
86 user.setOccupantId(occupantId);
87 if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)
88 || (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
89 && jid.equals(
90 InvalidJid.getNullForInvalid(
91 item.getAttributeAsJid("jid"))))) {
92 if (mucOptions.setOnline()) {
93 mXmppConnectionService.getAvatarService().clear(mucOptions);
94 }
95 final var current = mucOptions.getSelf().getFullJid();
96 if (mucOptions.setSelf(user)) {
97 Log.d(Config.LOGTAG,"role or affiliation changed");
98 mXmppConnectionService.databaseBackend.updateConversation(conversation);
99 }
100 final var modified = current == null || !current.equals(user.getFullJid());
101 mXmppConnectionService.persistSelfNick(user, modified);
102 invokeRenameListener(mucOptions, true);
103 }
104 boolean isNew = mucOptions.updateUser(user);
105 final AxolotlService axolotlService =
106 conversation.getAccount().getAxolotlService();
107 Contact contact = user.getContact();
108 if (isNew
109 && user.getRealJid() != null
110 && mucOptions.isPrivateAndNonAnonymous()
111 && (contact == null || !contact.mutualPresenceSubscription())
112 && axolotlService.hasEmptyDeviceList(user.getRealJid())) {
113 axolotlService.fetchDeviceIds(user.getRealJid());
114 }
115 if (codes.contains(MucOptions.STATUS_CODE_ROOM_CREATED)
116 && mucOptions.autoPushConfiguration()) {
117 Log.d(
118 Config.LOGTAG,
119 account.getJid().asBareJid()
120 + ": room '"
121 + mucOptions.getConversation().getJid().asBareJid()
122 + "' created. pushing default configuration");
123 mXmppConnectionService.pushConferenceConfiguration(
124 mucOptions.getConversation(),
125 IqGenerator.defaultChannelConfiguration(),
126 null);
127 }
128 if (mXmppConnectionService.getPgpEngine() != null) {
129 Element signed = packet.findChild("x", "jabber:x:signed");
130 if (signed != null) {
131 Element status = packet.findChild("status");
132 String msg = status == null ? "" : status.getContent();
133 long keyId =
134 mXmppConnectionService
135 .getPgpEngine()
136 .fetchKeyId(
137 mucOptions.getAccount(),
138 msg,
139 signed.getContent());
140 if (keyId != 0) {
141 user.setPgpKeyId(keyId);
142 }
143 }
144 }
145 if (avatar != null) {
146 avatar.owner = from;
147 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
148 if (user.setAvatar(avatar)) {
149 mXmppConnectionService.getAvatarService().clear(user);
150 }
151 if (user.getRealJid() != null) {
152 final Contact c =
153 conversation
154 .getAccount()
155 .getRoster()
156 .getContact(user.getRealJid());
157 c.setAvatar(avatar);
158 mXmppConnectionService.syncRoster(conversation.getAccount());
159 mXmppConnectionService.getAvatarService().clear(c);
160 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.AVATAR);
161 }
162 } else if (mXmppConnectionService.isDataSaverDisabled()) {
163 mXmppConnectionService.fetchAvatar(mucOptions.getAccount(), avatar);
164 }
165 }
166 }
167 }
168 } else if (type.equals("unavailable")) {
169 final boolean fullJidMatches = from.equals(mucOptions.getSelf().getFullJid());
170 if (x.hasChild("destroy") && fullJidMatches) {
171 Element destroy = x.findChild("destroy");
172 final Jid alternate =
173 destroy == null
174 ? null
175 : InvalidJid.getNullForInvalid(
176 destroy.getAttributeAsJid("jid"));
177 mucOptions.setError(MucOptions.Error.DESTROYED);
178 if (alternate != null) {
179 Log.d(
180 Config.LOGTAG,
181 account.getJid().asBareJid()
182 + ": muc destroyed. alternate location "
183 + alternate);
184 }
185 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN) && fullJidMatches) {
186 mucOptions.setError(MucOptions.Error.SHUTDOWN);
187 } else if (codes.contains(MucOptions.STATUS_CODE_SELF_PRESENCE)) {
188 if (codes.contains(MucOptions.STATUS_CODE_TECHNICAL_REASONS)) {
189 final boolean wasOnline = mucOptions.online();
190 mucOptions.setError(MucOptions.Error.TECHNICAL_PROBLEMS);
191 Log.d(
192 Config.LOGTAG,
193 account.getJid().asBareJid()
194 + ": received status code 333 in room "
195 + mucOptions.getConversation().getJid().asBareJid()
196 + " online="
197 + wasOnline);
198 if (wasOnline) {
199 mXmppConnectionService.mucSelfPingAndRejoin(conversation);
200 }
201 } else if (codes.contains(MucOptions.STATUS_CODE_KICKED)) {
202 mucOptions.setError(MucOptions.Error.KICKED);
203 } else if (codes.contains(MucOptions.STATUS_CODE_BANNED)) {
204 mucOptions.setError(MucOptions.Error.BANNED);
205 } else if (codes.contains(MucOptions.STATUS_CODE_LOST_MEMBERSHIP)) {
206 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
207 } else if (codes.contains(MucOptions.STATUS_CODE_AFFILIATION_CHANGE)) {
208 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
209 } else if (codes.contains(MucOptions.STATUS_CODE_SHUTDOWN)) {
210 mucOptions.setError(MucOptions.Error.SHUTDOWN);
211 } else if (!codes.contains(MucOptions.STATUS_CODE_CHANGED_NICK)) {
212 mucOptions.setError(MucOptions.Error.UNKNOWN);
213 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
214 }
215 } else if (!from.isBareJid()) {
216 Element item = x.findChild("item");
217 if (item != null) {
218 mucOptions.updateUser(parseItem(conversation, item, from, occupantIdEl, nick == null ? null : nick.getContent(), hats));
219 }
220 MucOptions.User user = mucOptions.deleteUser(from);
221 if (user != null && occupantIdEl == null) {
222 mXmppConnectionService.getAvatarService().clear(user);
223 }
224 }
225 } else if (type.equals("error")) {
226 final Element error = packet.findChild("error");
227 if (error == null) {
228 return;
229 }
230 if (error.hasChild("conflict")) {
231 if (mucOptions.online()) {
232 invokeRenameListener(mucOptions, false);
233 } else {
234 mucOptions.setError(MucOptions.Error.NICK_IN_USE);
235 }
236 } else if (error.hasChild("not-authorized")) {
237 mucOptions.setError(MucOptions.Error.PASSWORD_REQUIRED);
238 } else if (error.hasChild("forbidden")) {
239 mucOptions.setError(MucOptions.Error.BANNED);
240 } else if (error.hasChild("registration-required")) {
241 mucOptions.setError(MucOptions.Error.MEMBERS_ONLY);
242 } else if (error.hasChild("resource-constraint")) {
243 mucOptions.setError(MucOptions.Error.RESOURCE_CONSTRAINT);
244 } else if (error.hasChild("remote-server-timeout")) {
245 mucOptions.setError(MucOptions.Error.REMOTE_SERVER_TIMEOUT);
246 } else if (error.hasChild("gone")) {
247 final String gone = error.findChildContent("gone");
248 final Jid alternate;
249 if (gone != null) {
250 final XmppUri xmppUri = new XmppUri(gone);
251 if (xmppUri.isValidJid()) {
252 alternate = xmppUri.getJid();
253 } else {
254 alternate = null;
255 }
256 } else {
257 alternate = null;
258 }
259 mucOptions.setError(MucOptions.Error.DESTROYED);
260 if (alternate != null) {
261 Log.d(
262 Config.LOGTAG,
263 conversation.getAccount().getJid().asBareJid()
264 + ": muc destroyed. alternate location "
265 + alternate);
266 }
267 } else {
268 final String text = error.findChildContent("text");
269 if (text != null && text.contains("attribute 'to'")) {
270 if (mucOptions.online()) {
271 invokeRenameListener(mucOptions, false);
272 } else {
273 mucOptions.setError(MucOptions.Error.INVALID_NICK);
274 }
275 } else {
276 mucOptions.setError(MucOptions.Error.UNKNOWN);
277 Log.d(Config.LOGTAG, "unknown error in conference: " + packet);
278 }
279 }
280 }
281 }
282 }
283
284 private static void invokeRenameListener(final MucOptions options, boolean success) {
285 if (options.onRenameListener != null) {
286 if (success) {
287 options.onRenameListener.onSuccess();
288 } else {
289 options.onRenameListener.onFailure();
290 }
291 options.onRenameListener = null;
292 }
293 }
294
295 private static List<String> getStatusCodes(Element x) {
296 List<String> codes = new ArrayList<>();
297 if (x != null) {
298 for (Element child : x.getChildren()) {
299 if (child.getName().equals("status")) {
300 String code = child.getAttribute("code");
301 if (code != null) {
302 codes.add(code);
303 }
304 }
305 }
306 }
307 return codes;
308 }
309
310 private void parseContactPresence(final im.conversations.android.xmpp.model.stanza.Presence packet, 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(XmppConnectionService.UpdateRosterReason.AVATAR);
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(XmppConnectionService.UpdateRosterReason.PRESENCE, contact);
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}