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 eu.siacs.conversations.xmpp.stanzas.IqPacket;
38
39public class IqGenerator extends AbstractGenerator {
40
41 public IqGenerator(final XmppConnectionService service) {
42 super(service);
43 }
44
45 public IqPacket discoResponse(final Account account, final IqPacket request) {
46 final IqPacket packet = new IqPacket(IqPacket.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 IqPacket versionResponse(final IqPacket request) {
62 final IqPacket packet = request.generateResponse(IqPacket.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 IqPacket entityTimeResponse(IqPacket request) {
75 final IqPacket packet = request.generateResponse(IqPacket.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 IqPacket purgeOfflineMessages() {
95 final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
96 packet.addChild("offline", Namespace.FLEXIBLE_OFFLINE_MESSAGE_RETRIEVAL).addChild("purge");
97 return packet;
98 }
99
100 protected IqPacket publish(final String node, final Element item, final Bundle options) {
101 final IqPacket packet = new IqPacket(IqPacket.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 IqPacket publish(final String node, final Element item) {
114 return publish(node, item, null);
115 }
116
117 private IqPacket retrieve(String node, Element item) {
118 final IqPacket packet = new IqPacket(IqPacket.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 IqPacket retrieveBookmarks() {
129 return retrieve(Namespace.BOOKMARKS2, null);
130 }
131
132 public IqPacket publishNick(String nick) {
133 final Element item = new Element("item");
134 item.setAttribute("id", "current");
135 item.addChild("nick", Namespace.NICK).setContent(nick);
136 return publish(Namespace.NICK, item);
137 }
138
139 public IqPacket deleteNode(final String node) {
140 final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
141 final Element pubsub = packet.addChild("pubsub", Namespace.PUBSUB_OWNER);
142 pubsub.addChild("delete").setAttribute("node", node);
143 return packet;
144 }
145
146 public IqPacket deleteItem(final String node, final String id) {
147 IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
148 final Element pubsub = packet.addChild("pubsub", Namespace.PUBSUB);
149 final Element retract = pubsub.addChild("retract");
150 retract.setAttribute("node", node);
151 retract.setAttribute("notify","true");
152 retract.addChild("item").setAttribute("id", id);
153 return packet;
154 }
155
156 public IqPacket publishAvatar(Avatar avatar, Bundle options) {
157 final Element item = new Element("item");
158 item.setAttribute("id", avatar.sha1sum);
159 final Element data = item.addChild("data", Namespace.AVATAR_DATA);
160 data.setContent(avatar.image);
161 return publish(Namespace.AVATAR_DATA, item, options);
162 }
163
164 public IqPacket publishElement(final String namespace, final Element element, String id, final Bundle options) {
165 final Element item = new Element("item");
166 item.setAttribute("id", id);
167 item.addChild(element);
168 return publish(namespace, item, options);
169 }
170
171 public IqPacket publishAvatarMetadata(final Avatar avatar, final Bundle options) {
172 final Element item = new Element("item");
173 item.setAttribute("id", avatar.sha1sum);
174 final Element metadata = item
175 .addChild("metadata", Namespace.AVATAR_METADATA);
176 final Element info = metadata.addChild("info");
177 info.setAttribute("bytes", avatar.size);
178 info.setAttribute("id", avatar.sha1sum);
179 info.setAttribute("height", avatar.height);
180 info.setAttribute("width", avatar.height);
181 info.setAttribute("type", avatar.type);
182 return publish(Namespace.AVATAR_METADATA, item, options);
183 }
184
185 public IqPacket retrievePepAvatar(final Avatar avatar) {
186 final Element item = new Element("item");
187 item.setAttribute("id", avatar.sha1sum);
188 final IqPacket packet = retrieve(Namespace.AVATAR_DATA, item);
189 packet.setTo(avatar.owner);
190 return packet;
191 }
192
193 public IqPacket retrieveVcardAvatar(final Avatar avatar) {
194 final IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
195 packet.setTo(avatar.owner);
196 packet.addChild("vCard", "vcard-temp");
197 return packet;
198 }
199
200 public IqPacket retrieveVcardAvatar(final Jid to) {
201 final IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
202 packet.setTo(to);
203 packet.addChild("vCard", "vcard-temp");
204 return packet;
205 }
206
207 public IqPacket retrieveAvatarMetaData(final Jid to) {
208 final IqPacket packet = retrieve("urn:xmpp:avatar:metadata", null);
209 if (to != null) {
210 packet.setTo(to);
211 }
212 return packet;
213 }
214
215 public IqPacket retrieveDeviceIds(final Jid to) {
216 final IqPacket packet = retrieve(AxolotlService.PEP_DEVICE_LIST, null);
217 if (to != null) {
218 packet.setTo(to);
219 }
220 return packet;
221 }
222
223 public IqPacket retrieveBundlesForDevice(final Jid to, final int deviceid) {
224 final IqPacket packet = retrieve(AxolotlService.PEP_BUNDLES + ":" + deviceid, null);
225 packet.setTo(to);
226 return packet;
227 }
228
229 public IqPacket retrieveVerificationForDevice(final Jid to, final int deviceid) {
230 final IqPacket packet = retrieve(AxolotlService.PEP_VERIFICATION + ":" + deviceid, null);
231 packet.setTo(to);
232 return packet;
233 }
234
235 public IqPacket publishDeviceIds(final Set<Integer> ids, final Bundle publishOptions) {
236 final Element item = new Element("item");
237 item.setAttribute("id", "current");
238 final Element list = item.addChild("list", AxolotlService.PEP_PREFIX);
239 for (Integer id : ids) {
240 final Element device = new Element("device");
241 device.setAttribute("id", id);
242 list.addChild(device);
243 }
244 return publish(AxolotlService.PEP_DEVICE_LIST, item, publishOptions);
245 }
246
247 public Element publishBookmarkItem(final Bookmark bookmark) {
248 final String name = bookmark.getBookmarkName();
249 final String nick = bookmark.getNick();
250 final String password = bookmark.getPassword();
251 final boolean autojoin = bookmark.autojoin();
252 final Element conference = new Element("conference", Namespace.BOOKMARKS2);
253 if (name != null) {
254 conference.setAttribute("name", name);
255 }
256 if (nick != null) {
257 conference.addChild("nick").setContent(nick);
258 }
259 if (password != null) {
260 conference.addChild("password").setContent(password);
261 }
262 conference.setAttribute("autojoin",String.valueOf(autojoin));
263 conference.addChild(bookmark.getExtensions());
264 return conference;
265 }
266
267 public IqPacket publishBundles(final SignedPreKeyRecord signedPreKeyRecord, final IdentityKey identityKey,
268 final Set<PreKeyRecord> preKeyRecords, final int deviceId, Bundle publishOptions) {
269 final Element item = new Element("item");
270 item.setAttribute("id", "current");
271 final Element bundle = item.addChild("bundle", AxolotlService.PEP_PREFIX);
272 final Element signedPreKeyPublic = bundle.addChild("signedPreKeyPublic");
273 signedPreKeyPublic.setAttribute("signedPreKeyId", signedPreKeyRecord.getId());
274 ECPublicKey publicKey = signedPreKeyRecord.getKeyPair().getPublicKey();
275 signedPreKeyPublic.setContent(Base64.encodeToString(publicKey.serialize(), Base64.NO_WRAP));
276 final Element signedPreKeySignature = bundle.addChild("signedPreKeySignature");
277 signedPreKeySignature.setContent(Base64.encodeToString(signedPreKeyRecord.getSignature(), Base64.NO_WRAP));
278 final Element identityKeyElement = bundle.addChild("identityKey");
279 identityKeyElement.setContent(Base64.encodeToString(identityKey.serialize(), Base64.NO_WRAP));
280
281 final Element prekeys = bundle.addChild("prekeys", AxolotlService.PEP_PREFIX);
282 for (PreKeyRecord preKeyRecord : preKeyRecords) {
283 final Element prekey = prekeys.addChild("preKeyPublic");
284 prekey.setAttribute("preKeyId", preKeyRecord.getId());
285 prekey.setContent(Base64.encodeToString(preKeyRecord.getKeyPair().getPublicKey().serialize(), Base64.NO_WRAP));
286 }
287
288 return publish(AxolotlService.PEP_BUNDLES + ":" + deviceId, item, publishOptions);
289 }
290
291 public IqPacket publishVerification(byte[] signature, X509Certificate[] certificates, final int deviceId) {
292 final Element item = new Element("item");
293 item.setAttribute("id", "current");
294 final Element verification = item.addChild("verification", AxolotlService.PEP_PREFIX);
295 final Element chain = verification.addChild("chain");
296 for (int i = 0; i < certificates.length; ++i) {
297 try {
298 Element certificate = chain.addChild("certificate");
299 certificate.setContent(Base64.encodeToString(certificates[i].getEncoded(), Base64.NO_WRAP));
300 certificate.setAttribute("index", i);
301 } catch (CertificateEncodingException e) {
302 Log.d(Config.LOGTAG, "could not encode certificate");
303 }
304 }
305 verification.addChild("signature").setContent(Base64.encodeToString(signature, Base64.NO_WRAP));
306 return publish(AxolotlService.PEP_VERIFICATION + ":" + deviceId, item);
307 }
308
309 public IqPacket queryMessageArchiveManagement(final MessageArchiveService.Query mam) {
310 final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
311 final Element query = packet.query(mam.version.namespace);
312 query.setAttribute("queryid", mam.getQueryId());
313 final Data data = new Data();
314 data.setFormType(mam.version.namespace);
315 if (mam.muc()) {
316 packet.setTo(mam.getWith());
317 } else if (mam.getWith() != null) {
318 data.put("with", mam.getWith().toEscapedString());
319 }
320 final long start = mam.getStart();
321 final long end = mam.getEnd();
322 if (start != 0) {
323 data.put("start", getTimestamp(start));
324 }
325 if (end != 0) {
326 data.put("end", getTimestamp(end));
327 }
328 data.submit();
329 query.addChild(data);
330 Element set = query.addChild("set", "http://jabber.org/protocol/rsm");
331 if (mam.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
332 set.addChild("before").setContent(mam.getReference());
333 } else if (mam.getReference() != null) {
334 set.addChild("after").setContent(mam.getReference());
335 }
336 set.addChild("max").setContent(String.valueOf(Config.PAGE_SIZE));
337 return packet;
338 }
339
340 public IqPacket generateGetBlockList() {
341 final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
342 iq.addChild("blocklist", Namespace.BLOCKING);
343
344 return iq;
345 }
346
347 public IqPacket generateSetBlockRequest(final Jid jid, final boolean reportSpam, final String serverMsgId) {
348 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
349 final Element block = iq.addChild("block", Namespace.BLOCKING);
350 final Element item = block.addChild("item").setAttribute("jid", jid);
351 if (reportSpam) {
352 final Element report = item.addChild("report", Namespace.REPORTING);
353 report.setAttribute("reason", Namespace.REPORTING_REASON_SPAM);
354 if (serverMsgId != null) {
355 final Element stanzaId = report.addChild("stanza-id", Namespace.STANZA_IDS);
356 stanzaId.setAttribute("by", jid);
357 stanzaId.setAttribute("id", serverMsgId);
358 }
359 }
360 Log.d(Config.LOGTAG, iq.toString());
361 return iq;
362 }
363
364 public IqPacket generateSetUnblockRequest(final Jid jid) {
365 final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
366 final Element block = iq.addChild("unblock", Namespace.BLOCKING);
367 block.addChild("item").setAttribute("jid", jid);
368 return iq;
369 }
370
371 public IqPacket generateSetPassword(final Account account, final String newPassword) {
372 final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
373 packet.setTo(account.getDomain());
374 final Element query = packet.addChild("query", Namespace.REGISTER);
375 final Jid jid = account.getJid();
376 query.addChild("username").setContent(jid.getLocal());
377 query.addChild("password").setContent(newPassword);
378 return packet;
379 }
380
381 public IqPacket changeAffiliation(Conversation conference, Jid jid, String affiliation) {
382 List<Jid> jids = new ArrayList<>();
383 jids.add(jid);
384 return changeAffiliation(conference, jids, affiliation);
385 }
386
387 public IqPacket changeAffiliation(Conversation conference, List<Jid> jids, String affiliation) {
388 IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
389 packet.setTo(conference.getJid().asBareJid());
390 packet.setFrom(conference.getAccount().getJid());
391 Element query = packet.query("http://jabber.org/protocol/muc#admin");
392 for (Jid jid : jids) {
393 Element item = query.addChild("item");
394 item.setAttribute("jid", jid);
395 item.setAttribute("affiliation", affiliation);
396 }
397 return packet;
398 }
399
400 public IqPacket changeRole(Conversation conference, String nick, String role) {
401 IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
402 packet.setTo(conference.getJid().asBareJid());
403 packet.setFrom(conference.getAccount().getJid());
404 Element item = packet.query("http://jabber.org/protocol/muc#admin").addChild("item");
405 item.setAttribute("nick", nick);
406 item.setAttribute("role", role);
407 return packet;
408 }
409
410 public IqPacket requestHttpUploadSlot(Jid host, DownloadableFile file, String mime) {
411 IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
412 packet.setTo(host);
413 Element request = packet.addChild("request", Namespace.HTTP_UPLOAD);
414 request.setAttribute("filename", convertFilename(file.getName()));
415 request.setAttribute("size", file.getExpectedSize());
416 request.setAttribute("content-type", mime);
417 return packet;
418 }
419
420 public IqPacket requestHttpUploadLegacySlot(Jid host, DownloadableFile file, String mime) {
421 IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
422 packet.setTo(host);
423 Element request = packet.addChild("request", Namespace.HTTP_UPLOAD_LEGACY);
424 request.addChild("filename").setContent(convertFilename(file.getName()));
425 request.addChild("size").setContent(String.valueOf(file.getExpectedSize()));
426 request.addChild("content-type").setContent(mime);
427 return packet;
428 }
429
430 private static String convertFilename(String name) {
431 int pos = name.indexOf('.');
432 if (pos != -1) {
433 try {
434 UUID uuid = UUID.fromString(name.substring(0, pos));
435 ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
436 bb.putLong(uuid.getMostSignificantBits());
437 bb.putLong(uuid.getLeastSignificantBits());
438 return Base64.encodeToString(bb.array(), Base64.URL_SAFE | Base64.NO_PADDING | Base64.NO_WRAP) + name.substring(pos);
439 } catch (Exception e) {
440 return name;
441 }
442 } else {
443 return name;
444 }
445 }
446
447 public IqPacket generateCreateAccountWithCaptcha(Account account, String id, Data data) {
448 final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
449 register.setFrom(account.getJid().asBareJid());
450 register.setTo(account.getDomain());
451 register.setId(id);
452 Element query = register.query(Namespace.REGISTER);
453 if (data != null) {
454 query.addChild(data);
455 }
456 return register;
457 }
458
459 public IqPacket pushTokenToAppServer(Jid appServer, String token, String deviceId) {
460 return pushTokenToAppServer(appServer, token, deviceId, null);
461 }
462
463 public IqPacket pushTokenToAppServer(Jid appServer, String token, String deviceId, Jid muc) {
464 final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
465 packet.setTo(appServer);
466 final Element command = packet.addChild("command", Namespace.COMMANDS);
467 command.setAttribute("node", "register-push-fcm");
468 command.setAttribute("action", "execute");
469 final Data data = new Data();
470 data.put("token", token);
471 data.put("android-id", deviceId);
472 if (muc != null) {
473 data.put("muc", muc.toEscapedString());
474 }
475 data.submit();
476 command.addChild(data);
477 return packet;
478 }
479
480 public IqPacket unregisterChannelOnAppServer(Jid appServer, String deviceId, String channel) {
481 final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
482 packet.setTo(appServer);
483 final Element command = packet.addChild("command", Namespace.COMMANDS);
484 command.setAttribute("node", "unregister-push-fcm");
485 command.setAttribute("action", "execute");
486 final Data data = new Data();
487 data.put("channel", channel);
488 data.put("android-id", deviceId);
489 data.submit();
490 command.addChild(data);
491 return packet;
492 }
493
494 public IqPacket enablePush(final Jid jid, final String node, final String secret) {
495 IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
496 Element enable = packet.addChild("enable", Namespace.PUSH);
497 enable.setAttribute("jid", jid);
498 enable.setAttribute("node", node);
499 if (secret != null) {
500 Data data = new Data();
501 data.setFormType(Namespace.PUBSUB_PUBLISH_OPTIONS);
502 data.put("secret", secret);
503 data.submit();
504 enable.addChild(data);
505 }
506 return packet;
507 }
508
509 public IqPacket disablePush(final Jid jid, final String node) {
510 IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
511 Element disable = packet.addChild("disable", Namespace.PUSH);
512 disable.setAttribute("jid", jid);
513 disable.setAttribute("node", node);
514 return packet;
515 }
516
517 public IqPacket queryAffiliation(Conversation conversation, String affiliation) {
518 IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
519 packet.setTo(conversation.getJid().asBareJid());
520 packet.query("http://jabber.org/protocol/muc#admin").addChild("item").setAttribute("affiliation", affiliation);
521 return packet;
522 }
523
524 public static Bundle defaultGroupChatConfiguration() {
525 Bundle options = new Bundle();
526 options.putString("muc#roomconfig_persistentroom", "1");
527 options.putString("muc#roomconfig_membersonly", "1");
528 options.putString("muc#roomconfig_publicroom", "0");
529 options.putString("muc#roomconfig_whois", "anyone");
530 options.putString("muc#roomconfig_changesubject", "0");
531 options.putString("muc#roomconfig_allowinvites", "0");
532 options.putString("muc#roomconfig_enablearchiving", "1"); //prosody
533 options.putString("mam", "1"); //ejabberd community
534 options.putString("muc#roomconfig_mam", "1"); //ejabberd saas
535 return options;
536 }
537
538 public static Bundle defaultChannelConfiguration() {
539 Bundle options = new Bundle();
540 options.putString("muc#roomconfig_persistentroom", "1");
541 options.putString("muc#roomconfig_membersonly", "0");
542 options.putString("muc#roomconfig_publicroom", "1");
543 options.putString("muc#roomconfig_whois", "moderators");
544 options.putString("muc#roomconfig_changesubject", "0");
545 options.putString("muc#roomconfig_enablearchiving", "1"); //prosody
546 options.putString("mam", "1"); //ejabberd community
547 options.putString("muc#roomconfig_mam", "1"); //ejabberd saas
548 return options;
549 }
550
551 public IqPacket requestPubsubConfiguration(Jid jid, String node) {
552 return pubsubConfiguration(jid, node, null);
553 }
554
555 public IqPacket publishPubsubConfiguration(Jid jid, String node, Data data) {
556 return pubsubConfiguration(jid, node, data);
557 }
558
559 private IqPacket pubsubConfiguration(Jid jid, String node, Data data) {
560 IqPacket packet = new IqPacket(data == null ? IqPacket.TYPE.GET : IqPacket.TYPE.SET);
561 packet.setTo(jid);
562 Element pubsub = packet.addChild("pubsub", "http://jabber.org/protocol/pubsub#owner");
563 Element configure = pubsub.addChild("configure").setAttribute("node", node);
564 if (data != null) {
565 configure.addChild(data);
566 }
567 return packet;
568 }
569
570 public IqPacket queryDiscoItems(Jid jid) {
571 IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
572 packet.setTo(jid);
573 packet.addChild("query",Namespace.DISCO_ITEMS);
574 return packet;
575 }
576
577 public IqPacket queryDiscoInfo(Jid jid) {
578 IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
579 packet.setTo(jid);
580 packet.addChild("query",Namespace.DISCO_INFO);
581 return packet;
582 }
583}