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