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.Namespace;
 33import eu.siacs.conversations.xml.Element;
 34import eu.siacs.conversations.xmpp.forms.Data;
 35import eu.siacs.conversations.xmpp.pep.Avatar;
 36import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 37import rocks.xmpp.addr.Jid;
 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 publishNick(String nick) {
129		final Element item = new Element("item");
130		item.addChild("nick", "http://jabber.org/protocol/nick").setContent(nick);
131		return publish("http://jabber.org/protocol/nick", item);
132	}
133
134	public IqPacket publishAvatar(Avatar avatar) {
135		final Element item = new Element("item");
136		item.setAttribute("id", avatar.sha1sum);
137		final Element data = item.addChild("data", "urn:xmpp:avatar:data");
138		data.setContent(avatar.image);
139		return publish("urn:xmpp:avatar:data", item);
140	}
141
142	public IqPacket publishElement(final String namespace,final Element element, final Bundle options) {
143		final Element item = new Element("item");
144		item.setAttribute("id","current");
145		item.addChild(element);
146		return publish(namespace, item, options);
147	}
148
149	public IqPacket publishAvatarMetadata(final Avatar avatar) {
150		final Element item = new Element("item");
151		item.setAttribute("id", avatar.sha1sum);
152		final Element metadata = item
153				.addChild("metadata", "urn:xmpp:avatar:metadata");
154		final Element info = metadata.addChild("info");
155		info.setAttribute("bytes", avatar.size);
156		info.setAttribute("id", avatar.sha1sum);
157		info.setAttribute("height", avatar.height);
158		info.setAttribute("width", avatar.height);
159		info.setAttribute("type", avatar.type);
160		return publish("urn:xmpp:avatar:metadata", item);
161	}
162
163	public IqPacket retrievePepAvatar(final Avatar avatar) {
164		final Element item = new Element("item");
165		item.setAttribute("id", avatar.sha1sum);
166		final IqPacket packet = retrieve("urn:xmpp:avatar:data", item);
167		packet.setTo(avatar.owner);
168		return packet;
169	}
170
171	public IqPacket retrieveVcardAvatar(final Avatar avatar) {
172		final IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
173		packet.setTo(avatar.owner);
174		packet.addChild("vCard", "vcard-temp");
175		return packet;
176	}
177
178	public IqPacket retrieveAvatarMetaData(final Jid to) {
179		final IqPacket packet = retrieve("urn:xmpp:avatar:metadata", null);
180		if (to != null) {
181			packet.setTo(to);
182		}
183		return packet;
184	}
185
186	public IqPacket retrieveDeviceIds(final Jid to) {
187		final IqPacket packet = retrieve(AxolotlService.PEP_DEVICE_LIST, null);
188		if (to != null) {
189			packet.setTo(to);
190		}
191		return packet;
192	}
193
194	public IqPacket retrieveBundlesForDevice(final Jid to, final int deviceid) {
195		final IqPacket packet = retrieve(AxolotlService.PEP_BUNDLES + ":" + deviceid, null);
196		packet.setTo(to);
197		return packet;
198	}
199
200	public IqPacket retrieveVerificationForDevice(final Jid to, final int deviceid) {
201		final IqPacket packet = retrieve(AxolotlService.PEP_VERIFICATION + ":" + deviceid, null);
202		packet.setTo(to);
203		return packet;
204	}
205
206	public IqPacket publishDeviceIds(final Set<Integer> ids, final Bundle publishOptions) {
207		final Element item = new Element("item");
208		final Element list = item.addChild("list", AxolotlService.PEP_PREFIX);
209		for (Integer id : ids) {
210			final Element device = new Element("device");
211			device.setAttribute("id", id);
212			list.addChild(device);
213		}
214		return publish(AxolotlService.PEP_DEVICE_LIST, item, publishOptions);
215	}
216
217	public IqPacket publishBundles(final SignedPreKeyRecord signedPreKeyRecord, final IdentityKey identityKey,
218	                               final Set<PreKeyRecord> preKeyRecords, final int deviceId, Bundle publishOptions) {
219		final Element item = new Element("item");
220		final Element bundle = item.addChild("bundle", AxolotlService.PEP_PREFIX);
221		final Element signedPreKeyPublic = bundle.addChild("signedPreKeyPublic");
222		signedPreKeyPublic.setAttribute("signedPreKeyId", signedPreKeyRecord.getId());
223		ECPublicKey publicKey = signedPreKeyRecord.getKeyPair().getPublicKey();
224		signedPreKeyPublic.setContent(Base64.encodeToString(publicKey.serialize(), Base64.DEFAULT));
225		final Element signedPreKeySignature = bundle.addChild("signedPreKeySignature");
226		signedPreKeySignature.setContent(Base64.encodeToString(signedPreKeyRecord.getSignature(), Base64.DEFAULT));
227		final Element identityKeyElement = bundle.addChild("identityKey");
228		identityKeyElement.setContent(Base64.encodeToString(identityKey.serialize(), Base64.DEFAULT));
229
230		final Element prekeys = bundle.addChild("prekeys", AxolotlService.PEP_PREFIX);
231		for (PreKeyRecord preKeyRecord : preKeyRecords) {
232			final Element prekey = prekeys.addChild("preKeyPublic");
233			prekey.setAttribute("preKeyId", preKeyRecord.getId());
234			prekey.setContent(Base64.encodeToString(preKeyRecord.getKeyPair().getPublicKey().serialize(), Base64.DEFAULT));
235		}
236
237		return publish(AxolotlService.PEP_BUNDLES + ":" + deviceId, item, publishOptions);
238	}
239
240	public IqPacket publishVerification(byte[] signature, X509Certificate[] certificates, final int deviceId) {
241		final Element item = new Element("item");
242		final Element verification = item.addChild("verification", AxolotlService.PEP_PREFIX);
243		final Element chain = verification.addChild("chain");
244		for (int i = 0; i < certificates.length; ++i) {
245			try {
246				Element certificate = chain.addChild("certificate");
247				certificate.setContent(Base64.encodeToString(certificates[i].getEncoded(), Base64.DEFAULT));
248				certificate.setAttribute("index", i);
249			} catch (CertificateEncodingException e) {
250				Log.d(Config.LOGTAG, "could not encode certificate");
251			}
252		}
253		verification.addChild("signature").setContent(Base64.encodeToString(signature, Base64.DEFAULT));
254		return publish(AxolotlService.PEP_VERIFICATION + ":" + deviceId, item);
255	}
256
257	public IqPacket queryMessageArchiveManagement(final MessageArchiveService.Query mam) {
258		final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
259		final Element query = packet.query(mam.version.namespace);
260		query.setAttribute("queryid", mam.getQueryId());
261		final Data data = new Data();
262		data.setFormType(mam.version.namespace);
263		if (mam.muc()) {
264			packet.setTo(mam.getWith());
265		} else if (mam.getWith() != null) {
266			data.put("with", mam.getWith().toString());
267		}
268		final long start = mam.getStart();
269		final long end = mam.getEnd();
270		if (start != 0) {
271			data.put("start", getTimestamp(start));
272		}
273		if (end != 0) {
274			data.put("end", getTimestamp(end));
275		}
276		data.submit();
277		query.addChild(data);
278		Element set = query.addChild("set", "http://jabber.org/protocol/rsm");
279		if (mam.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) {
280			set.addChild("before").setContent(mam.getReference());
281		} else if (mam.getReference() != null) {
282			set.addChild("after").setContent(mam.getReference());
283		}
284		set.addChild("max").setContent(String.valueOf(Config.PAGE_SIZE));
285		return packet;
286	}
287
288	public IqPacket generateGetBlockList() {
289		final IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
290		iq.addChild("blocklist", Namespace.BLOCKING);
291
292		return iq;
293	}
294
295	public IqPacket generateSetBlockRequest(final Jid jid, boolean reportSpam) {
296		final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
297		final Element block = iq.addChild("block", Namespace.BLOCKING);
298		final Element item = block.addChild("item").setAttribute("jid", jid.asBareJid().toString());
299		if (reportSpam) {
300			item.addChild("report", "urn:xmpp:reporting:0").addChild("spam");
301		}
302		Log.d(Config.LOGTAG, iq.toString());
303		return iq;
304	}
305
306	public IqPacket generateSetUnblockRequest(final Jid jid) {
307		final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
308		final Element block = iq.addChild("unblock", Namespace.BLOCKING);
309		block.addChild("item").setAttribute("jid", jid.asBareJid().toString());
310		return iq;
311	}
312
313	public IqPacket generateSetPassword(final Account account, final String newPassword) {
314		final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
315		packet.setTo(Jid.of(account.getServer()));
316		final Element query = packet.addChild("query", Namespace.REGISTER);
317		final Jid jid = account.getJid();
318		query.addChild("username").setContent(jid.getLocal());
319		query.addChild("password").setContent(newPassword);
320		return packet;
321	}
322
323	public IqPacket changeAffiliation(Conversation conference, Jid jid, String affiliation) {
324		List<Jid> jids = new ArrayList<>();
325		jids.add(jid);
326		return changeAffiliation(conference, jids, affiliation);
327	}
328
329	public IqPacket changeAffiliation(Conversation conference, List<Jid> jids, String affiliation) {
330		IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
331		packet.setTo(conference.getJid().asBareJid());
332		packet.setFrom(conference.getAccount().getJid());
333		Element query = packet.query("http://jabber.org/protocol/muc#admin");
334		for (Jid jid : jids) {
335			Element item = query.addChild("item");
336			item.setAttribute("jid", jid.toEscapedString());
337			item.setAttribute("affiliation", affiliation);
338		}
339		return packet;
340	}
341
342	public IqPacket changeRole(Conversation conference, String nick, String role) {
343		IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
344		packet.setTo(conference.getJid().asBareJid());
345		packet.setFrom(conference.getAccount().getJid());
346		Element item = packet.query("http://jabber.org/protocol/muc#admin").addChild("item");
347		item.setAttribute("nick", nick);
348		item.setAttribute("role", role);
349		return packet;
350	}
351
352	public IqPacket requestHttpUploadSlot(Jid host, DownloadableFile file, String mime) {
353		IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
354		packet.setTo(host);
355		Element request = packet.addChild("request", Namespace.HTTP_UPLOAD);
356		request.setAttribute("filename", convertFilename(file.getName()));
357		request.setAttribute("size", file.getExpectedSize());
358		request.setAttribute("content-type", mime);
359		return packet;
360	}
361
362	public IqPacket requestHttpUploadLegacySlot(Jid host, DownloadableFile file, String mime) {
363		IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
364		packet.setTo(host);
365		Element request = packet.addChild("request", Namespace.HTTP_UPLOAD_LEGACY);
366		request.addChild("filename").setContent(convertFilename(file.getName()));
367		request.addChild("size").setContent(String.valueOf(file.getExpectedSize()));
368		request.addChild("content-type").setContent(mime);
369		return packet;
370	}
371
372	public IqPacket requestP1S3Slot(Jid host, String md5) {
373		IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
374		packet.setTo(host);
375		packet.query(Namespace.P1_S3_FILE_TRANSFER).setAttribute("md5", md5);
376		return packet;
377	}
378
379	public IqPacket requestP1S3Url(Jid host, String fileId) {
380		IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
381		packet.setTo(host);
382		packet.query(Namespace.P1_S3_FILE_TRANSFER).setAttribute("fileid", fileId);
383		return packet;
384	}
385
386	private static String convertFilename(String name) {
387		int pos = name.indexOf('.');
388		if (pos != -1) {
389			try {
390				UUID uuid = UUID.fromString(name.substring(0, pos));
391				ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
392				bb.putLong(uuid.getMostSignificantBits());
393				bb.putLong(uuid.getLeastSignificantBits());
394				return Base64.encodeToString(bb.array(), Base64.URL_SAFE | Base64.NO_PADDING | Base64.NO_WRAP) + name.substring(pos, name.length());
395			} catch (Exception e) {
396				return name;
397			}
398		} else {
399			return name;
400		}
401	}
402
403	public IqPacket generateCreateAccountWithCaptcha(Account account, String id, Data data) {
404		final IqPacket register = new IqPacket(IqPacket.TYPE.SET);
405		register.setFrom(account.getJid().asBareJid());
406		register.setTo(Jid.of(account.getServer()));
407		register.setId(id);
408		Element query = register.query("jabber:iq:register");
409		if (data != null) {
410			query.addChild(data);
411		}
412		return register;
413	}
414
415	public IqPacket pushTokenToAppServer(Jid appServer, String token, String deviceId) {
416		IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
417		packet.setTo(appServer);
418		Element command = packet.addChild("command", "http://jabber.org/protocol/commands");
419		command.setAttribute("node", "register-push-fcm");
420		command.setAttribute("action", "execute");
421		Data data = new Data();
422		data.put("token", token);
423		data.put("android-id", deviceId);
424		data.submit();
425		command.addChild(data);
426		return packet;
427	}
428
429	public IqPacket enablePush(Jid jid, String node, String secret) {
430		IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
431		Element enable = packet.addChild("enable", "urn:xmpp:push:0");
432		enable.setAttribute("jid", jid.toString());
433		enable.setAttribute("node", node);
434		Data data = new Data();
435		data.setFormType(Namespace.PUBSUB_PUBLISH_OPTIONS);
436		data.put("secret", secret);
437		data.submit();
438		enable.addChild(data);
439		return packet;
440	}
441
442	public IqPacket queryAffiliation(Conversation conversation, String affiliation) {
443		IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
444		packet.setTo(conversation.getJid().asBareJid());
445		packet.query("http://jabber.org/protocol/muc#admin").addChild("item").setAttribute("affiliation", affiliation);
446		return packet;
447	}
448
449	public static Bundle defaultRoomConfiguration() {
450		Bundle options = new Bundle();
451		options.putString("muc#roomconfig_persistentroom", "1");
452		options.putString("muc#roomconfig_membersonly", "1");
453		options.putString("muc#roomconfig_publicroom", "0");
454		options.putString("muc#roomconfig_whois", "anyone");
455		options.putString("muc#roomconfig_enablearchiving", "1"); //prosody
456		options.putString("mam", "1"); //ejabberd community
457		options.putString("muc#roomconfig_mam","1"); //ejabberd saas
458		return options;
459	}
460
461	public IqPacket requestPubsubConfiguration(Jid jid, String node) {
462		return pubsubConfiguration(jid, node, null);
463	}
464
465	public IqPacket publishPubsubConfiguration(Jid jid, String node, Data data) {
466		return pubsubConfiguration(jid, node, data);
467	}
468
469	private IqPacket pubsubConfiguration(Jid jid, String node, Data data) {
470		IqPacket packet = new IqPacket(data == null ? IqPacket.TYPE.GET : IqPacket.TYPE.SET);
471		packet.setTo(jid);
472		Element pubsub = packet.addChild("pubsub", "http://jabber.org/protocol/pubsub#owner");
473		Element configure = pubsub.addChild("configure").setAttribute("node", node);
474		if (data != null) {
475			configure.addChild(data);
476		}
477		return packet;
478	}
479}