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 if (mucOptions.setSelf(user)) {
96 Log.d(Config.LOGTAG,"role or affiliation changed");
97 mXmppConnectionService.databaseBackend.updateConversation(conversation);
98 }
99 mXmppConnectionService.persistSelfNick(user);
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(XmppConnectionService.UpdateRosterReason.AVATAR);
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 : InvalidJid.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, occupantIdEl, nick == null ? null : nick.getContent(), hats));
217 }
218 MucOptions.User user = mucOptions.deleteUser(from);
219 if (user != null && occupantIdEl == 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(final im.conversations.android.xmpp.model.stanza.Presence packet, final Account account) {
309 final PresenceGenerator mPresenceGenerator = mXmppConnectionService.getPresenceGenerator();
310 final Jid from = packet.getFrom();
311 if (from == null || from.equals(account.getJid())) {
312 return;
313 }
314 final String type = packet.getAttribute("type");
315 final Contact contact = account.getRoster().getContact(from);
316 if (type == null) {
317 final String resource = from.isBareJid() ? "" : from.getResource();
318 final Avatar avatar =
319 Avatar.parsePresence(packet.findChild("x", "vcard-temp:x:update"));
320 if (avatar != null && (!contact.isSelf() || account.getAvatar() == null)) {
321 avatar.owner = from.asBareJid();
322 if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) {
323 if (avatar.owner.equals(account.getJid().asBareJid())) {
324 account.setAvatar(avatar.getFilename());
325 mXmppConnectionService.databaseBackend.updateAccount(account);
326 mXmppConnectionService.getAvatarService().clear(account);
327 mXmppConnectionService.updateConversationUi();
328 mXmppConnectionService.updateAccountUi();
329 } else {
330 contact.setAvatar(avatar);
331 mXmppConnectionService.syncRoster(account);
332 mXmppConnectionService.getAvatarService().clear(contact);
333 mXmppConnectionService.updateConversationUi();
334 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.AVATAR);
335 }
336 } else if (mXmppConnectionService.isDataSaverDisabled()) {
337 mXmppConnectionService.fetchAvatar(account, avatar);
338 }
339 }
340
341 if (mXmppConnectionService.isMuc(account, from)) {
342 return;
343 }
344
345 final int sizeBefore = contact.getPresences().size();
346
347 final String show = packet.findChildContent("show");
348 final Element caps = packet.findChild("c", "http://jabber.org/protocol/caps");
349 final String message = packet.findChildContent("status");
350 final Presence presence = Presence.parse(show, caps, message);
351 contact.updatePresence(resource, presence);
352 if (presence.hasCaps()) {
353 mXmppConnectionService.fetchCaps(account, from, presence);
354 }
355
356 final Element idle = packet.findChild("idle", Namespace.IDLE);
357 if (idle != null) {
358 try {
359 final String since = idle.getAttribute("since");
360 contact.setLastseen(AbstractParser.parseTimestamp(since));
361 contact.flagInactive();
362 } catch (Throwable throwable) {
363 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
364 contact.flagActive();
365 }
366 }
367 } else {
368 if (contact.setLastseen(AbstractParser.parseTimestamp(packet))) {
369 contact.flagActive();
370 }
371 }
372
373 final PgpEngine pgp = mXmppConnectionService.getPgpEngine();
374 final Element x = packet.findChild("x", "jabber:x:signed");
375 if (pgp != null && x != null) {
376 final String status = packet.findChildContent("status");
377 final long keyId = pgp.fetchKeyId(account, status, x.getContent());
378 if (keyId != 0 && contact.setPgpKeyId(keyId)) {
379 Log.d(
380 Config.LOGTAG,
381 account.getJid().asBareJid()
382 + ": found OpenPGP key id for "
383 + contact.getJid()
384 + " "
385 + OpenPgpUtils.convertKeyIdToHex(keyId));
386 mXmppConnectionService.syncRoster(account);
387 }
388 }
389 boolean online = sizeBefore < contact.getPresences().size();
390 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, online);
391 } else if (type.equals("unavailable")) {
392 if (contact.setLastseen(AbstractParser.parseTimestamp(packet, 0L, true))) {
393 contact.flagInactive();
394 }
395 if (from.isBareJid()) {
396 contact.clearPresences();
397 } else {
398 contact.removePresence(from.getResource());
399 }
400 if (contact.getShownStatus() == Presence.Status.OFFLINE) {
401 contact.flagInactive();
402 }
403 mXmppConnectionService.onContactStatusChanged.onContactStatusChanged(contact, false);
404 } else if (type.equals("subscribe")) {
405 if (contact.isBlocked()) {
406 Log.d(
407 Config.LOGTAG,
408 account.getJid().asBareJid()
409 + ": ignoring 'subscribe' presence from blocked "
410 + from);
411 return;
412 }
413 if (contact.setPresenceName(packet.findChildContent("nick", Namespace.NICK))) {
414 mXmppConnectionService.syncRoster(account);
415 mXmppConnectionService.getAvatarService().clear(contact);
416 }
417 if (contact.getOption(Contact.Options.PREEMPTIVE_GRANT)) {
418 mXmppConnectionService.sendPresencePacket(
419 account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
420 } else {
421 contact.setOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
422 final Conversation conversation =
423 mXmppConnectionService.findOrCreateConversation(
424 account, contact.getJid().asBareJid(), false, false);
425 final String statusMessage = packet.findChildContent("status");
426 if (statusMessage != null
427 && !statusMessage.isEmpty()
428 && conversation.countMessages() == 0) {
429 conversation.add(
430 new Message(
431 conversation,
432 statusMessage,
433 Message.ENCRYPTION_NONE,
434 Message.STATUS_RECEIVED));
435 }
436 }
437 }
438 mXmppConnectionService.updateRosterUi(XmppConnectionService.UpdateRosterReason.PRESENCE, contact);
439 }
440
441 @Override
442 public void accept(final im.conversations.android.xmpp.model.stanza.Presence packet) {
443 if (packet.hasChild("x", Namespace.MUC_USER)) {
444 this.parseConferencePresence(packet, account);
445 } else if (packet.hasChild("x", "http://jabber.org/protocol/muc")) {
446 this.parseConferencePresence(packet, account);
447 } else if ("error".equals(packet.getAttribute("type"))
448 && mXmppConnectionService.isMuc(account, packet.getFrom())) {
449 this.parseConferencePresence(packet, account);
450 } else {
451 this.parseContactPresence(packet, account);
452 }
453 }
454}