1package eu.siacs.conversations.generator;
2
3
4import android.os.Bundle;
5import android.util.Base64;
6import android.util.Log;
7
8import org.whispersystems.libsignal.IdentityKey;
9import org.whispersystems.libsignal.ecc.ECPublicKey;
10import org.whispersystems.libsignal.state.PreKeyRecord;
11import org.whispersystems.libsignal.state.SignedPreKeyRecord;
12
13import java.nio.ByteBuffer;
14import java.security.cert.CertificateEncodingException;
15import java.security.cert.X509Certificate;
16import java.util.ArrayList;
17import java.util.List;
18import java.util.Locale;
19import java.util.Set;
20import java.util.TimeZone;
21import java.util.UUID;
22
23import eu.siacs.conversations.Config;
24import eu.siacs.conversations.R;
25import eu.siacs.conversations.crypto.axolotl.AxolotlService;
26import eu.siacs.conversations.entities.Account;
27import eu.siacs.conversations.entities.Bookmark;
28import eu.siacs.conversations.entities.Conversation;
29import eu.siacs.conversations.entities.DownloadableFile;
30import eu.siacs.conversations.services.MessageArchiveService;
31import eu.siacs.conversations.services.XmppConnectionService;
32import eu.siacs.conversations.xml.Element;
33import eu.siacs.conversations.xml.Namespace;
34import eu.siacs.conversations.xmpp.Jid;
35import eu.siacs.conversations.xmpp.forms.Data;
36import eu.siacs.conversations.xmpp.pep.Avatar;
37import im.conversations.android.xmpp.model.stanza.Iq;
38
39public class IqGenerator extends AbstractGenerator {
40
41 public IqGenerator(final XmppConnectionService service) {
42 super(service);
43 }
44
45 public Iq discoResponse(final Account account, final Iq request) {
46 final var packet = new Iq(Iq.Type.RESULT);
47 packet.setId(request.getId());
48 packet.setTo(request.getFrom());
49 final Element query = packet.addChild("query", "http://jabber.org/protocol/disco#info");
50 query.setAttribute("node", request.query().getAttribute("node"));
51 final Element identity = query.addChild("identity");
52 identity.setAttribute("category", "client");
53 identity.setAttribute("type", getIdentityType());
54 identity.setAttribute("name", getIdentityName());
55 for (final String feature : getFeatures(account)) {
56 query.addChild("feature").setAttribute("var", feature);
57 }
58 return packet;
59 }
60
61 public Iq versionResponse(final Iq request) {
62 final var packet = request.generateResponse(Iq.Type.RESULT);
63 Element query = packet.query("jabber:iq:version");
64 query.addChild("name").setContent(mXmppConnectionService.getString(R.string.app_name));
65 query.addChild("version").setContent(getIdentityVersion());
66 if ("chromium".equals(android.os.Build.BRAND)) {
67 query.addChild("os").setContent("Chrome OS");
68 } else {
69 query.addChild("os").setContent("Android");
70 }
71 return packet;
72 }
73
74 public Iq entityTimeResponse(final Iq request) {
75 final Iq packet = request.generateResponse(Iq.Type.RESULT);
76 Element time = packet.addChild("time", "urn:xmpp:time");
77 final long now = System.currentTimeMillis();
78 time.addChild("utc").setContent(getTimestamp(now));
79 TimeZone ourTimezone = TimeZone.getDefault();
80 long offsetSeconds = ourTimezone.getOffset(now) / 1000;
81 long offsetMinutes = Math.abs((offsetSeconds % 3600) / 60);
82 long offsetHours = offsetSeconds / 3600;
83 String hours;
84 if (offsetHours < 0) {
85 hours = String.format(Locale.US, "%03d", offsetHours);
86 } else {
87 hours = String.format(Locale.US, "%02d", offsetHours);
88 }
89 String minutes = String.format(Locale.US, "%02d", offsetMinutes);
90 time.addChild("tzo").setContent(hours + ":" + minutes);
91 return packet;
92 }
93
94 public static Iq purgeOfflineMessages() {
95 final Iq packet = new Iq(Iq.Type.SET);
96 packet.addChild("offline", Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL).addChild("purge");
97 return packet;
98 }
99
100 protected Iq publish(final String node, final Element item, final Bundle options) {
101 final var packet = new Iq(Iq.Type.SET);
102 final Element pubsub = packet.addChild("pubsub", Namespace.PUBSUB);
103 final Element publish = pubsub.addChild("publish");
104 publish.setAttribute("node", node);
105 publish.addChild(item);
106 if (options != null) {
107 final Element publishOptions = pubsub.addChild("publish-options");
108 publishOptions.addChild(Data.create(Namespace.PUBSUB_PUBLISH_OPTIONS, options));
109 }
110 return packet;
111 }
112
113 protected Iq publish(final String node, final Element item) {
114 return publish(node, item, null);
115 }
116
117 private Iq retrieve(String node, Element item) {
118 final var packet = new Iq(Iq.Type.GET);
119 final Element pubsub = packet.addChild("pubsub", Namespace.PUBSUB);
120 final Element items = pubsub.addChild("items");
121 items.setAttribute("node", node);
122 if (item != null) {
123 items.addChild(item);
124 }
125 return packet;
126 }
127
128 public Iq retrieveBookmarks() {
129 return retrieve(Namespace.BOOKMARKS2, null);
130 }
131
132 public Iq retrieveMds() {
133 return retrieve(Namespace.MDS_DISPLAYED, null);
134 }
135
136 public Iq publishNick(String nick) {
137 final Element item = new Element("item");
138 item.setAttribute("id", "current");
139 item.addChild("nick", Namespace.NICK).setContent(nick);
140 return publish(Namespace.NICK, item);
141 }
142
143 public Iq deleteNode(final String node) {
144 final var packet = new Iq(Iq.Type.SET);
145 final Element pubsub = packet.addChild("pubsub", Namespace.PUBSUB_OWNER);
146 pubsub.addChild("delete").setAttribute("node", node);
147 return packet;
148 }
149
150 public Iq deleteItem(final String node, final String id) {
151 final var packet = new Iq(Iq.Type.SET);
152 final Element pubsub = packet.addChild("pubsub", Namespace.PUBSUB);
153 final Element retract = pubsub.addChild("retract");
154 retract.setAttribute("node", node);
155 retract.setAttribute("notify","true");
156 retract.addChild("item").setAttribute("id", id);
157 return packet;
158 }
159
160 public Iq publishAvatar(Avatar avatar, Bundle options) {
161 final Element item = new Element("item");
162 item.setAttribute("id", avatar.sha1sum);
163 final Element data = item.addChild("data", Namespace.AVATAR_DATA);
164 data.setContent(avatar.image);
165 return publish(Namespace.AVATAR_DATA, item, options);
166 }
167
168 public Iq publishElement(final String namespace, final Element element, String id, final Bundle options) {
169 final Element item = new Element("item");
170 item.setAttribute("id", id);
171 item.addChild(element);
172 return publish(namespace, item, options);
173 }
174
175 public Iq publishAvatarMetadata(final Avatar avatar, final Bundle options) {
176 final Element item = new Element("item");
177 item.setAttribute("id", avatar.sha1sum);
178 final Element metadata = item
179 .addChild("metadata", Namespace.AVATAR_METADATA);
180 final Element info = metadata.addChild("info");
181 info.setAttribute("bytes", avatar.size);
182 info.setAttribute("id", avatar.sha1sum);
183 info.setAttribute("height", avatar.height);
184 info.setAttribute("width", avatar.height);
185 info.setAttribute("type", avatar.type);
186 return publish(Namespace.AVATAR_METADATA, item, options);
187 }
188
189 public Iq retrievePepAvatar(final Avatar avatar) {
190 final Element item = new Element("item");
191 item.setAttribute("id", avatar.sha1sum);
192 final var packet = retrieve(Namespace.AVATAR_DATA, item);
193 packet.setTo(avatar.owner);
194 return packet;
195 }
196
197 public Iq retrieveVcardAvatar(final Avatar avatar) {
198 final Iq packet = new Iq(Iq.Type.GET);
199 packet.setTo(avatar.owner);
200 packet.addChild("vCard", "vcard-temp");
201 return packet;
202 }
203
204 public Iq retrieveVcardAvatar(final Jid to) {
205 final Iq packet = new Iq(Iq.Type.GET);
206 packet.setTo(to);
207 packet.addChild("vCard", "vcard-temp");
208 return packet;
209 }
210
211 public Iq retrieveAvatarMetaData(final Jid to) {
212 final Iq packet = retrieve("urn:xmpp:avatar:metadata", null);
213 if (to != null) {
214 packet.setTo(to);
215 }
216 return packet;
217 }
218
219 public Iq retrieveDeviceIds(final Jid to) {
220 final var packet = retrieve(AxolotlService.PEP_DEVICE_LIST, null);
221 if (to != null) {
222 packet.setTo(to);
223 }
224 return packet;
225 }
226
227 public Iq retrieveBundlesForDevice(final Jid to, final int deviceid) {
228 final var packet = retrieve(AxolotlService.PEP_BUNDLES + ":" + deviceid, null);
229 packet.setTo(to);
230 return packet;
231 }
232
233 public Iq retrieveVerificationForDevice(final Jid to, final int deviceid) {
234 final var packet = retrieve(AxolotlService.PEP_VERIFICATION + ":" + deviceid, null);
235 packet.setTo(to);
236 return packet;
237 }
238
239 public Iq publishDeviceIds(final Set<Integer> ids, final Bundle publishOptions) {
240 final Element item = new Element("item");
241 item.setAttribute("id", "current");
242 final Element list = item.addChild("list", AxolotlService.PEP_PREFIX);
243 for (Integer id : ids) {
244 final Element device = new Element("device");
245 device.setAttribute("id", id);
246 list.addChild(device);
247 }
248 return publish(AxolotlService.PEP_DEVICE_LIST, item, publishOptions);
249 }
250
251 public Element publishBookmarkItem(final Bookmark bookmark) {
252 final String name = bookmark.getBookmarkName();
253 final String nick = bookmark.getNick();
254 final String password = bookmark.getPassword();
255 final boolean autojoin = bookmark.autojoin();
256 final Element conference = new Element("conference", Namespace.BOOKMARKS2);
257 if (name != null) {
258 conference.setAttribute("name", name);
259 }
260 if (nick != null) {
261 conference.addChild("nick").setContent(nick);
262 }
263 if (password != null) {
264 conference.addChild("password").setContent(password);
265 }
266 conference.setAttribute("autojoin",String.valueOf(autojoin));
267 conference.addChild(bookmark.getExtensions());
268 return conference;
269 }
270
271 public Element mdsDisplayed(final String stanzaId, final Conversation conversation) {
272 final Jid by;
273 if (conversation.getMode() == Conversation.MODE_MULTI) {
274 by = conversation.getJid().asBareJid();
275 } else {
276 by = conversation.getAccount().getJid().asBareJid();
277 }
278 return mdsDisplayed(stanzaId, by);
279 }
280
281 private Element mdsDisplayed(final String stanzaId, final Jid by) {
282 final Element displayed = new Element("displayed", Namespace.MDS_DISPLAYED);
283 final Element stanzaIdElement = displayed.addChild("stanza-id", Namespace.STANZA_IDS);
284 stanzaIdElement.setAttribute("id", stanzaId);
285 stanzaIdElement.setAttribute("by", by);
286 return displayed;
287 }
288
289 public Iq publishBundles(final SignedPreKeyRecord signedPreKeyRecord, final IdentityKey identityKey,
290 final Set<PreKeyRecord> preKeyRecords, final int deviceId, Bundle publishOptions) {
291 final Element item = new Element("item");
292 item.setAttribute("id", "current");
293 final Element bundle = item.addChild("bundle", AxolotlService.PEP_PREFIX);
294 final Element signedPreKeyPublic = bundle.addChild("signedPreKeyPublic");
295 signedPreKeyPublic.setAttribute("signedPreKeyId", signedPreKeyRecord.getId());
296 ECPublicKey publicKey = signedPreKeyRecord.getKeyPair().getPublicKey();
297 signedPreKeyPublic.setContent(Base64.encodeToString(publicKey.serialize(), Base64.NO_WRAP));
298 final Element signedPreKeySignature = bundle.addChild("signedPreKeySignature");
299 signedPreKeySignature.setContent(Base64.encodeToString(signedPreKeyRecord.getSignature(), Base64.NO_WRAP));
300 final Element identityKeyElement = bundle.addChild("identityKey");
301 identityKeyElement.setContent(Base64.encodeToString(identityKey.serialize(), Base64.NO_WRAP));
302
303 final Element prekeys = bundle.addChild("prekeys", AxolotlService.PEP_PREFIX);
304 for (PreKeyRecord preKeyRecord : preKeyRecords) {
305 final Element prekey = prekeys.addChild("preKeyPublic");
306 prekey.setAttribute("preKeyId", preKeyRecord.getId());
307 prekey.setContent(Base64.encodeToString(preKeyRecord.getKeyPair().getPublicKey().serialize(), Base64.NO_WRAP));
308 }
309
310 return publish(AxolotlService.PEP_BUNDLES + ":" + deviceId, item, publishOptions);
311 }
312
313 public Iq publishVerification(byte[] signature, X509Certificate[] certificates, final int deviceId) {
314 final Element item = new Element("item");
315 item.setAttribute("id", "current");
316 final Element verification = item.addChild("verification", AxolotlService.PEP_PREFIX);
317 final Element chain = verification.addChild("chain");
318 for (int i = 0; i < certificates.length; ++i) {
319 try {
320 Element certificate = chain.addChild("certificate");
321 certificate.setContent(Base64.encodeToString(certificates[i].getEncoded(), Base64.NO_WRAP));
322 certificate.setAttribute("index", i);
323 } catch (CertificateEncodingException e) {
324 Log.d(Config.LOGTAG, "could not encode certificate");
325 }
326 }
327 verification.addChild("signature").setContent(Base64.encodeToString(signature, Base64.NO_WRAP));
328 return publish(AxolotlService.PEP_VERIFICATION + ":" + deviceId, item);
329 }
330
331 public Iq queryMessageArchiveManagement(final MessageArchiveService.Query mam) {
332 final Iq packet = new Iq(Iq.Type.SET);
333 final Element query = packet.query(mam.version.namespace);
334 query.setAttribute("queryid", mam.getQueryId());
335 final Data data = new Data();
336 data.setFormType(mam.version.namespace);
337 if (mam.muc()) {
338 packet.setTo(mam.getWith());
339 } else if (mam.getWith() != null) {
340 data.put("with", mam.getWith().toEscapedString());
341 }
342 final long start = mam.getStart();
343 final long end = mam.getEnd();
344 if (start != 0) {
345 data.put("start", getTimestamp(start));
346 }
347 if (end != 0) {
348 data.put("end", getTimestamp(end));
349 }
350 data.submit();
351 query.addChild(data);
352 Element set = query.addChild("set", "http://jabber.org/protocol/rsm");
353 if (mam.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
354 set.addChild("before").setContent(mam.getReference());
355 } else if (mam.getReference() != null) {
356 set.addChild("after").setContent(mam.getReference());
357 }
358 set.addChild("max").setContent(String.valueOf(Config.PAGE_SIZE));
359 return packet;
360 }
361
362 public Iq generateGetBlockList() {
363 final Iq iq = new Iq(Iq.Type.GET);
364 iq.addChild("blocklist", Namespace.BLOCKING);
365
366 return iq;
367 }
368
369 public Iq generateSetBlockRequest(final Jid jid, final boolean reportSpam, final String serverMsgId) {
370 final Iq iq = new Iq(Iq.Type.SET);
371 final Element block = iq.addChild("block", Namespace.BLOCKING);
372 final Element item = block.addChild("item").setAttribute("jid", jid);
373 if (reportSpam) {
374 final Element report = item.addChild("report", Namespace.REPORTING);
375 report.setAttribute("reason", Namespace.REPORTING_REASON_SPAM);
376 if (serverMsgId != null) {
377 final Element stanzaId = report.addChild("stanza-id", Namespace.STANZA_IDS);
378 stanzaId.setAttribute("by", jid);
379 stanzaId.setAttribute("id", serverMsgId);
380 }
381 }
382 Log.d(Config.LOGTAG, iq.toString());
383 return iq;
384 }
385
386 public Iq generateSetUnblockRequest(final Jid jid) {
387 final Iq iq = new Iq(Iq.Type.SET);
388 final Element block = iq.addChild("unblock", Namespace.BLOCKING);
389 block.addChild("item").setAttribute("jid", jid);
390 return iq;
391 }
392
393 public Iq generateSetPassword(final Account account, final String newPassword) {
394 final Iq packet = new Iq(Iq.Type.SET);
395 packet.setTo(account.getDomain());
396 final Element query = packet.addChild("query", Namespace.REGISTER);
397 final Jid jid = account.getJid();
398 query.addChild("username").setContent(jid.getLocal());
399 query.addChild("password").setContent(newPassword);
400 return packet;
401 }
402
403 public Iq changeAffiliation(Conversation conference, Jid jid, String affiliation) {
404 List<Jid> jids = new ArrayList<>();
405 jids.add(jid);
406 return changeAffiliation(conference, jids, affiliation);
407 }
408
409 public Iq changeAffiliation(Conversation conference, List<Jid> jids, String affiliation) {
410 final Iq packet = new Iq(Iq.Type.SET);
411 packet.setTo(conference.getJid().asBareJid());
412 packet.setFrom(conference.getAccount().getJid());
413 Element query = packet.query("http://jabber.org/protocol/muc#admin");
414 for (Jid jid : jids) {
415 Element item = query.addChild("item");
416 item.setAttribute("jid", jid);
417 item.setAttribute("affiliation", affiliation);
418 }
419 return packet;
420 }
421
422 public Iq changeRole(Conversation conference, String nick, String role) {
423 final Iq packet = new Iq(Iq.Type.SET);
424 packet.setTo(conference.getJid().asBareJid());
425 packet.setFrom(conference.getAccount().getJid());
426 Element item = packet.query("http://jabber.org/protocol/muc#admin").addChild("item");
427 item.setAttribute("nick", nick);
428 item.setAttribute("role", role);
429 return packet;
430 }
431
432 public Iq requestHttpUploadSlot(Jid host, DownloadableFile file, String mime) {
433 final Iq packet = new Iq(Iq.Type.GET);
434 packet.setTo(host);
435 Element request = packet.addChild("request", Namespace.HTTP_UPLOAD);
436 request.setAttribute("filename", convertFilename(file.getName()));
437 request.setAttribute("size", file.getExpectedSize());
438 request.setAttribute("content-type", mime);
439 return packet;
440 }
441
442 public Iq requestHttpUploadLegacySlot(Jid host, DownloadableFile file, String mime) {
443 final Iq packet = new Iq(Iq.Type.GET);
444 packet.setTo(host);
445 Element request = packet.addChild("request", Namespace.HTTP_UPLOAD_LEGACY);
446 request.addChild("filename").setContent(convertFilename(file.getName()));
447 request.addChild("size").setContent(String.valueOf(file.getExpectedSize()));
448 request.addChild("content-type").setContent(mime);
449 return packet;
450 }
451
452 private static String convertFilename(String name) {
453 int pos = name.indexOf('.');
454 if (pos != -1) {
455 try {
456 UUID uuid = UUID.fromString(name.substring(0, pos));
457 ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
458 bb.putLong(uuid.getMostSignificantBits());
459 bb.putLong(uuid.getLeastSignificantBits());
460 return Base64.encodeToString(bb.array(), Base64.URL_SAFE | Base64.NO_PADDING | Base64.NO_WRAP) + name.substring(pos);
461 } catch (Exception e) {
462 return name;
463 }
464 } else {
465 return name;
466 }
467 }
468
469 public static Iq generateCreateAccountWithCaptcha(final Account account, final String id, final Data data) {
470 final Iq register = new Iq(Iq.Type.SET);
471 register.setFrom(account.getJid().asBareJid());
472 register.setTo(account.getDomain());
473 register.setId(id);
474 Element query = register.query(Namespace.REGISTER);
475 if (data != null) {
476 query.addChild(data);
477 }
478 return register;
479 }
480
481 public Iq pushTokenToAppServer(Jid appServer, String token, String deviceId) {
482 return pushTokenToAppServer(appServer, token, deviceId, null);
483 }
484
485 public Iq pushTokenToAppServer(Jid appServer, String token, String deviceId, Jid muc) {
486 final Iq packet = new Iq(Iq.Type.SET);
487 packet.setTo(appServer);
488 final Element command = packet.addChild("command", Namespace.COMMANDS);
489 command.setAttribute("node", "register-push-fcm");
490 command.setAttribute("action", "execute");
491 final Data data = new Data();
492 data.put("token", token);
493 data.put("android-id", deviceId);
494 if (muc != null) {
495 data.put("muc", muc.toEscapedString());
496 }
497 data.submit();
498 command.addChild(data);
499 return packet;
500 }
501
502 public Iq unregisterChannelOnAppServer(Jid appServer, String deviceId, String channel) {
503 final Iq packet = new Iq(Iq.Type.SET);
504 packet.setTo(appServer);
505 final Element command = packet.addChild("command", Namespace.COMMANDS);
506 command.setAttribute("node", "unregister-push-fcm");
507 command.setAttribute("action", "execute");
508 final Data data = new Data();
509 data.put("channel", channel);
510 data.put("android-id", deviceId);
511 data.submit();
512 command.addChild(data);
513 return packet;
514 }
515
516 public Iq enablePush(final Jid jid, final String node, final String secret) {
517 final Iq packet = new Iq(Iq.Type.SET);
518 Element enable = packet.addChild("enable", Namespace.PUSH);
519 enable.setAttribute("jid", jid);
520 enable.setAttribute("node", node);
521 if (secret != null) {
522 Data data = new Data();
523 data.setFormType(Namespace.PUBSUB_PUBLISH_OPTIONS);
524 data.put("secret", secret);
525 data.submit();
526 enable.addChild(data);
527 }
528 return packet;
529 }
530
531 public Iq disablePush(final Jid jid, final String node) {
532 Iq packet = new Iq(Iq.Type.SET);
533 Element disable = packet.addChild("disable", Namespace.PUSH);
534 disable.setAttribute("jid", jid);
535 disable.setAttribute("node", node);
536 return packet;
537 }
538
539 public Iq queryAffiliation(Conversation conversation, String affiliation) {
540 final Iq packet = new Iq(Iq.Type.GET);
541 packet.setTo(conversation.getJid().asBareJid());
542 packet.query("http://jabber.org/protocol/muc#admin").addChild("item").setAttribute("affiliation", affiliation);
543 return packet;
544 }
545
546 public static Bundle defaultGroupChatConfiguration() {
547 Bundle options = new Bundle();
548 options.putString("muc#roomconfig_persistentroom", "1");
549 options.putString("muc#roomconfig_membersonly", "1");
550 options.putString("muc#roomconfig_publicroom", "0");
551 options.putString("muc#roomconfig_whois", "anyone");
552 options.putString("muc#roomconfig_changesubject", "0");
553 options.putString("muc#roomconfig_allowinvites", "0");
554 options.putString("muc#roomconfig_enablearchiving", "1"); //prosody
555 options.putString("mam", "1"); //ejabberd community
556 options.putString("muc#roomconfig_mam", "1"); //ejabberd saas
557 return options;
558 }
559
560 public static Bundle defaultChannelConfiguration() {
561 Bundle options = new Bundle();
562 options.putString("muc#roomconfig_persistentroom", "1");
563 options.putString("muc#roomconfig_membersonly", "0");
564 options.putString("muc#roomconfig_publicroom", "1");
565 options.putString("muc#roomconfig_whois", "moderators");
566 options.putString("muc#roomconfig_changesubject", "0");
567 options.putString("muc#roomconfig_enablearchiving", "1"); //prosody
568 options.putString("mam", "1"); //ejabberd community
569 options.putString("muc#roomconfig_mam", "1"); //ejabberd saas
570 return options;
571 }
572
573 public Iq requestPubsubConfiguration(Jid jid, String node) {
574 return pubsubConfiguration(jid, node, null);
575 }
576
577 public Iq publishPubsubConfiguration(Jid jid, String node, Data data) {
578 return pubsubConfiguration(jid, node, data);
579 }
580
581 private Iq pubsubConfiguration(Jid jid, String node, Data data) {
582 final Iq packet = new Iq(data == null ? Iq.Type.GET : Iq.Type.SET);
583 packet.setTo(jid);
584 Element pubsub = packet.addChild("pubsub", "http://jabber.org/protocol/pubsub#owner");
585 Element configure = pubsub.addChild("configure").setAttribute("node", node);
586 if (data != null) {
587 configure.addChild(data);
588 }
589 return packet;
590 }
591
592 public Iq queryDiscoItems(final Jid jid) {
593 final Iq packet = new Iq(Iq.Type.GET);
594 packet.setTo(jid);
595 packet.addChild("query",Namespace.DISCO_ITEMS);
596 return packet;
597 }
598
599 public Iq queryDiscoInfo(final Jid jid) {
600 final Iq packet = new Iq(Iq.Type.GET);
601 packet.setTo(jid);
602 packet.addChild("query",Namespace.DISCO_INFO);
603 return packet;
604 }
605}