summaryrefslogtreecommitdiffstats
blob: b6c39dd8397b2fe869adce40e7da1d6d135efc2e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
/*
 * Copyright (c) 2013-2014 Remko Tronçon
 * Licensed under the GNU General Public License.
 * See the COPYING file for more information.
 */

#include <boost/lambda/lambda.hpp>
#include <boost/lambda/bind.hpp>
#include <boost/assign/list_of.hpp>
#include <iostream>

#include <Sluift/SluiftClient.h>
#include <Swiften/JID/JID.h>
#include <Swiften/Elements/SoftwareVersion.h>
#include <Swiften/Elements/Message.h>
#include <Swiften/Elements/Presence.h>
#include <Swiften/Elements/RawXMLPayload.h>
#include <Swiften/Elements/RosterItemPayload.h>
#include <Swiften/Elements/RosterPayload.h>
#include <Swiften/Elements/DiscoInfo.h>
#include <Swiften/Elements/MAMQuery.h>
#include <Swiften/Disco/ClientDiscoManager.h>
#include <Swiften/Queries/GenericRequest.h>
#include <Swiften/Presence/PresenceSender.h>
#include <Swiften/Roster/XMPPRoster.h>
#include <Swiften/Roster/SetRosterRequest.h>
#include <Swiften/Presence/SubscriptionManager.h>
#include <Swiften/Roster/XMPPRosterItem.h>
#include <Swiften/Queries/IQRouter.h>
#include <Swiften/Queries/Requests/GetSoftwareVersionRequest.h>
#include <Sluift/Lua/FunctionRegistration.h>
#include <Swiften/Base/foreach.h>
#include <Swiften/Base/IDGenerator.h>
#include <Sluift/Lua/Check.h>
#include <Sluift/Lua/Value.h>
#include <Sluift/Lua/Exception.h>
#include <Sluift/Lua/LuaUtils.h>
#include <Sluift/globals.h>
#include <Sluift/ElementConvertors/StanzaConvertor.h>
#include <Sluift/ElementConvertors/IQConvertor.h>
#include <Sluift/ElementConvertors/PresenceConvertor.h>
#include <Sluift/ElementConvertors/MessageConvertor.h>
#include <Sluift/ElementConvertors/StatusShowConvertor.h>

using namespace Swift;
namespace lambda = boost::lambda;

static inline SluiftClient* getClient(lua_State* L) {
	return *Lua::checkUserData<SluiftClient>(L, 1);
}

static inline int getGlobalTimeout(lua_State* L) {
	lua_rawgeti(L, LUA_REGISTRYINDEX, Sluift::globals.moduleLibIndex);
	lua_getfield(L, -1, "timeout");
	int result = boost::numeric_cast<int>(lua_tointeger(L, -1));
	lua_pop(L, 2);
	return result;
}

static void addPayloadsToTable(lua_State* L, const std::vector<boost::shared_ptr<Payload> >& payloads) {
	if (!payloads.empty()) {
		lua_createtable(L, boost::numeric_cast<int>(payloads.size()), 0);
		for (size_t i = 0; i < payloads.size(); ++i) {
			Sluift::globals.elementConvertor.convertToLua(L, payloads[i]);
			lua_rawseti(L, -2, boost::numeric_cast<int>(i+1));
		}
		Lua::registerGetByTypeIndex(L, -1);
		lua_setfield(L, -2, "payloads");
	}
}

static boost::shared_ptr<Payload> getPayload(lua_State* L, int index) {
	if (lua_type(L, index) == LUA_TTABLE) {
		return boost::dynamic_pointer_cast<Payload>(Sluift::globals.elementConvertor.convertFromLua(L, index));
	}
	else if (lua_type(L, index) == LUA_TSTRING) {
		return boost::make_shared<RawXMLPayload>(Lua::checkString(L, index));
	}
	else {
		return boost::shared_ptr<Payload>();
	}
}

static std::vector< boost::shared_ptr<Payload> > getPayloadsFromTable(lua_State* L, int index) {
	index = Lua::absoluteOffset(L, index);
	std::vector< boost::shared_ptr<Payload> > result;
	lua_getfield(L, index, "payloads");
	if (lua_istable(L, -1)) {
		for (lua_pushnil(L); lua_next(L, -2); lua_pop(L, 1)) {
			boost::shared_ptr<Payload> payload = getPayload(L, -1);
			if (payload) {
				result.push_back(payload);
			}
		}
	}
	lua_pop(L, 1);
	return result;
}

SLUIFT_LUA_FUNCTION(Client, async_connect) {
	SluiftClient* client = getClient(L);

	std::string host = client->getOptions().manualHostname;
	int port = client->getOptions().manualPort;
	if (lua_istable(L, 2)) {
		if (boost::optional<std::string> hostString = Lua::getStringField(L, 2, "host")) {
			host = *hostString;
		}
		if (boost::optional<int> portInt = Lua::getIntField(L, 2, "port")) {
			port = *portInt;
		}
	}
	client->connect(host, port);
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, set_trace_enabled,
		"Enable/disable tracing of the data sent/received.\n\n.",
		"self\n"
		"enable  a boolean specifying whether to enable/disable tracing",
		""
) {
	getClient(L)->setTraceEnabled(lua_toboolean(L, 1));
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, wait_connected,
		"Block until the client is connected.\n\nThis is useful after an `async_connect`.",
		"self",
		""
) {
	getClient(L)->waitConnected(getGlobalTimeout(L));
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, is_connected,
		"Checks whether this client is still connected.\n\nReturns a boolean.",
		"self\n",
		""
) {
	lua_pushboolean(L, getClient(L)->isConnected());
	return 1;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, disconnect,
		"Disconnect from the server",
		"self\n",
		""
) {
	Sluift::globals.eventLoop.runOnce();
	getClient(L)->disconnect();
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, set_version,

		"Sets the published version of this client.",

		"self",

		"name  the name of the client software\n"
		"version  the version identifier of this client\n"
		"os  the OS this client is running on\n"
) {
	Sluift::globals.eventLoop.runOnce();
	SluiftClient* client = getClient(L);
	if (boost::shared_ptr<SoftwareVersion> version = boost::dynamic_pointer_cast<SoftwareVersion>(Sluift::globals.elementConvertor.convertFromLuaUntyped(L, 2, "software_version"))) {
		client->setSoftwareVersion(version->getName(), version->getVersion(), version->getOS());
	}
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, get_contacts,
		"Returns a table of all the contacts in the contact list.",
		"self\n",
		""
) {
	Sluift::globals.eventLoop.runOnce();

	SluiftClient* client = getClient(L);
	Lua::Table contactsTable;
	foreach(const XMPPRosterItem& item, client->getRoster()) {
		std::string subscription;
		switch(item.getSubscription()) {
			case RosterItemPayload::None: subscription = "none"; break;
			case RosterItemPayload::To: subscription = "to"; break;
			case RosterItemPayload::From: subscription = "from"; break;
			case RosterItemPayload::Both: subscription = "both"; break;
			case RosterItemPayload::Remove: subscription = "remove"; break;
		}
		Lua::Table itemTable = boost::assign::map_list_of
			("jid", boost::make_shared<Lua::Value>(item.getJID().toString()))
			("name", boost::make_shared<Lua::Value>(item.getName()))
			("subscription", boost::make_shared<Lua::Value>(subscription))
			("groups", boost::make_shared<Lua::Value>(std::vector<Lua::Value>(item.getGroups().begin(), item.getGroups().end())));
		contactsTable[item.getJID().toString()] = boost::make_shared<Lua::Value>(itemTable);
	}
	pushValue(L, contactsTable);
	Lua::registerTableToString(L, -1);
	return 1;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, send_message,
		"Send a message.",
		"self\n"
		"to  the JID to send the message to\n"
		"body  the body of the message. Can alternatively be specified using the `body` option\n",

		"to  the JID to send the message to\n"
		"body  the body of the message\n"
		"subject  the subject of the MUC room to set\n"
		"type  the type of message to send (`normal`, `chat`, `error`, `groupchat`, `headline`)\n"
		"payloads  payloads to add to the message\n"
) {
	Sluift::globals.eventLoop.runOnce();
	JID to;
	boost::optional<std::string> body;
	boost::optional<std::string> subject;
	std::vector<boost::shared_ptr<Payload> > payloads;
	int index = 2;
	Message::Type type = Message::Chat;
	if (lua_isstring(L, index)) {
		to = std::string(lua_tostring(L, index));
		++index;
		if (lua_isstring(L, index)) {
			body = lua_tostring(L, index);
			++index;
		}
	}
	if (lua_istable(L, index)) {
		if (boost::optional<std::string> value = Lua::getStringField(L, index, "to")) {
			to = *value;
		}

		if (boost::optional<std::string> value = Lua::getStringField(L, index, "body")) {
			body = value;
		}

		if (boost::optional<std::string> value = Lua::getStringField(L, index, "type")) {
			type = MessageConvertor::convertMessageTypeFromString(*value);
		}

		if (boost::optional<std::string> value = Lua::getStringField(L, index, "subject")) {
			subject = value;
		}

		payloads = getPayloadsFromTable(L, index);
	}

	if (!to.isValid()) {
		throw Lua::Exception("Missing 'to'");
	}
	if ((!body || body->empty()) && !subject && payloads.empty()) {
		throw Lua::Exception("Missing any of 'body', 'subject' or 'payloads'");
	}
	Message::ref message = boost::make_shared<Message>();
	message->setTo(to);
	if (body && !body->empty()) {
		message->setBody(*body);
	}
	if (subject) {
		message->setSubject(*subject);
	}
	message->addPayloads(payloads.begin(), payloads.end());
	message->setType(type);
	getClient(L)->getClient()->sendMessage(message);
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, send_presence,
		"Send presence.",

		"self\n"
		"body  the text of the presence. Can alternatively be specified using the `status` option\n",

		"to  the JID to send the message to\n"
		"status  the text of the presence\n"
		"show  the availability of the presence (`online`, `ffc`, `away`, `xa`, `dnd`)\n"
		"priority  the priority of the presence\n"
		"type  the type of message to send (`available`, `error`, `probe`, `subscribe`, `subscribed`, `unavailable`, `unsubscribe`, `unsubscribed`)\n"
		"payloads  payloads to add to the presence\n"
) {
	Sluift::globals.eventLoop.runOnce();
	boost::shared_ptr<Presence> presence = boost::make_shared<Presence>();
	
	int index = 2;
	if (lua_isstring(L, index)) {
		presence->setStatus(lua_tostring(L, index));
		++index;
	}
	if (lua_istable(L, index)) {
		if (boost::optional<std::string> value = Lua::getStringField(L, index, "to")) {
			presence->setTo(*value);
		}
		if (boost::optional<std::string> value = Lua::getStringField(L, index, "status")) {
			presence->setStatus(*value);
		}
		if (boost::optional<int> value = Lua::getIntField(L, index, "priority")) {
			presence->setPriority(*value);
		}
		if (boost::optional<std::string> value = Lua::getStringField(L, index, "type")) {
			presence->setType(PresenceConvertor::convertPresenceTypeFromString(*value));
		}
		if (boost::optional<std::string> value = Lua::getStringField(L, index, "show")) {
			presence->setShow(StatusShowConvertor::convertStatusShowTypeFromString(*value));
		}
		std::vector< boost::shared_ptr<Payload> > payloads = getPayloadsFromTable(L, index);
		presence->addPayloads(payloads.begin(), payloads.end());
	}

	getClient(L)->getClient()->getPresenceSender()->sendPresence(presence);
	lua_pushvalue(L, 1);
	return 0;
}

static int sendQuery(lua_State* L, IQ::Type type) {
	SluiftClient* client = getClient(L);

	JID to;
	if (boost::optional<std::string> toString = Lua::getStringField(L, 2, "to")) {
		to = JID(*toString);
	}

	int timeout = getGlobalTimeout(L);
	if (boost::optional<int> timeoutInt = Lua::getIntField(L, 2, "timeout")) {
		timeout = *timeoutInt;
	}

	boost::shared_ptr<Payload> payload;
	lua_getfield(L, 2, "query");
	payload = getPayload(L, -1);
	lua_pop(L, 1);

	return client->sendRequest(
		boost::make_shared< GenericRequest<Payload> >(type, to, payload, client->getClient()->getIQRouter()), timeout).convertToLuaResult(L);
}

#define DISPATCH_PUBSUB_PAYLOAD(payloadType, container, response) \
	else if (boost::shared_ptr<payloadType> p = boost::dynamic_pointer_cast<payloadType>(payload)) { \
		return client->sendPubSubRequest(type, to, p, timeout).convertToLuaResult(L); \
	}

SLUIFT_LUA_FUNCTION(Client, query_pubsub) {
	SluiftClient* client = getClient(L);

	JID to;
	if (boost::optional<std::string> toString = Lua::getStringField(L, 2, "to")) {
		to = JID(*toString);
	}

	int timeout = getGlobalTimeout(L);
	if (boost::optional<int> timeoutInt = Lua::getIntField(L, 2, "timeout")) {
		timeout = *timeoutInt;
	}

	IQ::Type type;
	if (boost::optional<std::string> queryType = Lua::getStringField(L, 2, "type")) {
		type = IQConvertor::convertIQTypeFromString(*queryType);
	}
	else {
		throw Lua::Exception("Missing query type");
	}

	lua_getfield(L, 2, "query");
	if (!lua_istable(L, -1)) {
		throw Lua::Exception("Missing/incorrect query");
	}
	boost::shared_ptr<Payload> payload = getPayload(L, -1);

	if (false) { }
	SWIFTEN_PUBSUB_FOREACH_PUBSUB_PAYLOAD_TYPE(DISPATCH_PUBSUB_PAYLOAD)
	else {
		throw Lua::Exception("Incorrect PubSub payload");
	}
}


SLUIFT_LUA_FUNCTION(Client, get) {
	return sendQuery(L, IQ::Get);
}

SLUIFT_LUA_FUNCTION(Client, set) {
	return sendQuery(L, IQ::Set);
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, send,
		"Sends a raw string",

		"self\n"
		"data  the string to send\n",

		""
) {
	Sluift::globals.eventLoop.runOnce();

	getClient(L)->getClient()->sendData(std::string(Lua::checkString(L, 2)));
	lua_pushvalue(L, 1);
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, set_options,

		"Sets the connection options of this client.",

		"self",

		"host  The host to connect to. When omitted, is determined from resolving the JID domain.\n"
		"port  The port to connect to. When omitted, is determined from resolving the JID domain.\n"
		"ack  Request acknowledgements\n"
		"compress  Use stream compression when available\n"
		"tls  Use TLS when available\n"
		"bosh_url  Connect using the specified BOSH URL\n"
		"allow_plain_without_tls  Allow PLAIN authentication without a TLS encrypted connection\n"
) {
	SluiftClient* client = getClient(L);
	Lua::checkType(L, 2, LUA_TTABLE);
	lua_getfield(L, 2, "host");
	if (!lua_isnil(L, -1)) {
		client->getOptions().manualHostname = lua_tostring(L, -1);
	}
	lua_getfield(L, 2, "port");
	if (!lua_isnil(L, -1)) {
		client->getOptions().manualPort = boost::numeric_cast<int>(lua_tointeger(L, -1));
	}
	lua_getfield(L, 2, "ack");
	if (!lua_isnil(L, -1)) {
		client->getOptions().useAcks = lua_toboolean(L, -1);
	}
	lua_getfield(L, 2, "compress");
	if (!lua_isnil(L, -1)) {
		client->getOptions().useStreamCompression = lua_toboolean(L, -1);
	}
	lua_getfield(L, 2, "tls");
	if (!lua_isnil(L, -1)) {
		bool useTLS = lua_toboolean(L, -1);
		client->getOptions().useTLS = (useTLS ? ClientOptions::UseTLSWhenAvailable : ClientOptions::NeverUseTLS);
	}
	lua_getfield(L, 2, "bosh_url");
	if (!lua_isnil(L, -1)) {
		client->getOptions().boshURL = URL::fromString(lua_tostring(L, -1));
	}
	lua_getfield(L, 2, "allow_plain_without_tls");
	if (!lua_isnil(L, -1)) {
		client->getOptions().allowPLAINWithoutTLS = lua_toboolean(L, -1);
	}
	lua_pushvalue(L, 1);
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, get_options,
		"Returns a table with all the connection options of this client.",
		"self\n",
		""
) {
	Sluift::globals.eventLoop.runOnce();

	SluiftClient* client = getClient(L);
	Lua::Table optionsTable = boost::assign::map_list_of
		("host", boost::make_shared<Lua::Value>(client->getOptions().manualHostname))
		("port", boost::make_shared<Lua::Value>(client->getOptions().manualPort))
		("ack", boost::make_shared<Lua::Value>(client->getOptions().useAcks))
		("compress", boost::make_shared<Lua::Value>(client->getOptions().useStreamCompression))
		("tls", boost::make_shared<Lua::Value>(client->getOptions().useTLS == ClientOptions::NeverUseTLS ? false : true))
		("bosh_url", boost::make_shared<Lua::Value>(client->getOptions().boshURL.toString()))
		("allow_plain_without_tls", boost::make_shared<Lua::Value>(client->getOptions().allowPLAINWithoutTLS));
	pushValue(L, optionsTable);
	Lua::registerTableToString(L, -1);
	return 1;
}

static void pushEvent(lua_State* L, const SluiftClient::Event& event) {
	switch (event.type) {
		case SluiftClient::Event::MessageType: {
			Message::ref message = boost::dynamic_pointer_cast<Message>(event.stanza);
			Lua::Table result = boost::assign::map_list_of
				("type", boost::make_shared<Lua::Value>(std::string("message")))
				("from", boost::make_shared<Lua::Value>(message->getFrom().toString()))
				("body", boost::make_shared<Lua::Value>(message->getBody()))
				("message_type", boost::make_shared<Lua::Value>(MessageConvertor::convertMessageTypeToString(message->getType())));
			Lua::pushValue(L, result);
			addPayloadsToTable(L, message->getPayloads());
			Lua::registerTableToString(L, -1);
			break;
		}
		case SluiftClient::Event::PresenceType: {
			Presence::ref presence = boost::dynamic_pointer_cast<Presence>(event.stanza);
			Lua::Table result = boost::assign::map_list_of
				("type", boost::make_shared<Lua::Value>(std::string("presence")))
				("from", boost::make_shared<Lua::Value>(presence->getFrom().toString()))
				("status", boost::make_shared<Lua::Value>(presence->getStatus()))
				("presence_type", boost::make_shared<Lua::Value>(PresenceConvertor::convertPresenceTypeToString(presence->getType())));
			Lua::pushValue(L, result);
			addPayloadsToTable(L, presence->getPayloads());
			Lua::registerTableToString(L, -1);
			break;
		}
		case SluiftClient::Event::PubSubEventType: {
			Sluift::globals.elementConvertor.convertToLua(L, event.pubsubEvent);
			lua_pushstring(L, "pubsub");
			lua_setfield(L, -2, "type");
			lua_pushstring(L, event.from.toString().c_str());
			lua_setfield(L, -2, "from");

			lua_rawgeti(L, LUA_REGISTRYINDEX, Sluift::globals.coreLibIndex);
			lua_getfield(L, -1, "process_pubsub_event");
			lua_pushvalue(L, -3);
			lua_call(L, 1, 0);
			lua_pop(L, 1);
		}
	}
}

struct CallUnaryLuaPredicateOnEvent {
	CallUnaryLuaPredicateOnEvent(lua_State* L, int index) : L(L), index(index) {
	}

	bool operator()(const SluiftClient::Event& event) {
		lua_pushvalue(L, index);
		pushEvent(L, event);
		if (lua_pcall(L, 1, 1, 0) != 0) {
			throw Lua::Exception(lua_tostring(L, -1));
		}
		bool result = lua_toboolean(L, -1);
		lua_pop(L, 1);
		return result;
	}

	lua_State* L;
	int index;
};


SLUIFT_LUA_FUNCTION(Client, get_next_event) {
	Sluift::globals.eventLoop.runOnce();
	SluiftClient* client = getClient(L);

	int timeout = getGlobalTimeout(L);
	boost::optional<SluiftClient::Event::Type> type;
	int condition = 0;
	if (lua_istable(L, 2)) {
		if (boost::optional<std::string> typeString = Lua::getStringField(L, 2, "type")) {
			if (*typeString == "message") {
				type = SluiftClient::Event::MessageType;
			}
			else if (*typeString == "presence") {
				type = SluiftClient::Event::PresenceType;
			}
			else if (*typeString == "pubsub") {
				type = SluiftClient::Event::PubSubEventType;
			}
		}
		if (boost::optional<int> timeoutInt = Lua::getIntField(L, 2, "timeout")) {
			timeout = *timeoutInt;
		}
		lua_getfield(L, 2, "if");
		if (lua_isfunction(L, -1)) {
			condition = Lua::absoluteOffset(L, -1);
		}
	}

	boost::optional<SluiftClient::Event> event;
	if (condition) {
		event = client->getNextEvent(timeout, CallUnaryLuaPredicateOnEvent(L, condition));
	}
	else if (type) {
		event = client->getNextEvent(
				timeout, lambda::bind(&SluiftClient::Event::type, lambda::_1) == *type);
	}
	else {
		event = client->getNextEvent(timeout);
	}

	if (event) {
		pushEvent(L, *event);
	}
	else {
		lua_pushnil(L);
	}
	return 1;
}


SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, add_contact,
		"Add a contact to the contact list.",
		"self\n",
		"jid  The JID of the contact to add\n"
		"name  The name to use in the contact list\n"
		"groups  An array of group names to add the contact to\n") {
	Sluift::globals.eventLoop.runOnce();
	SluiftClient* client = getClient(L);
	RosterItemPayload item;
	if (lua_type(L, 2) == LUA_TTABLE) {
		lua_getfield(L, 2, "jid");
		const char* rawJID = lua_tostring(L, -1);
		if (rawJID) {
			item.setJID(std::string(rawJID));
		}
		lua_getfield(L, 2, "name");
		const char* rawName = lua_tostring(L, -1);
		if (rawName) {
			item.setName(rawName);
		}
		lua_getfield(L, 2, "groups");
		if (!lua_isnil(L, -1)) {
			if (lua_type(L, -1) == LUA_TTABLE) {
				for (size_t i = 1; i <= lua_objlen(L, -1); ++i) {
					lua_rawgeti(L, -1, boost::numeric_cast<int>(i));
					const char* rawGroup = lua_tostring(L, -1);
					if (rawGroup) {
						item.addGroup(rawGroup);
					}
					lua_pop(L, 1);
				}
			}
			else {
				throw Lua::Exception("Groups should be a table");
			}
		}
	}
	else {
		item.setJID(Lua::checkString(L, 2));
	}

	client->getRoster();
	if (!client->getClient()->getRoster()->containsJID(item.getJID())) {
		RosterPayload::ref roster = boost::make_shared<RosterPayload>();
		roster->addItem(item);

		Sluift::Response response = client->sendVoidRequest(
			SetRosterRequest::create(roster, client->getClient()->getIQRouter()), -1);
		if (response.error) {
			return response.convertToLuaResult(L);
		}
	}
	client->getClient()->getSubscriptionManager()->requestSubscription(item.getJID());
	lua_pushboolean(L, true);
	return 1;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, remove_contact,
		"Remove a contact from the contact list.",
		"self\n"
		"jid  the JID of the contact to remove\n",
		""
) {
	Sluift::globals.eventLoop.runOnce();
	SluiftClient* client = getClient(L);
	JID jid(Lua::checkString(L, 2));

	RosterPayload::ref roster = boost::make_shared<RosterPayload>();
	roster->addItem(RosterItemPayload(JID(Lua::checkString(L, 2)), "", RosterItemPayload::Remove));
		
	return client->sendVoidRequest(
		SetRosterRequest::create(roster, client->getClient()->getIQRouter()), -1).convertToLuaResult(L);
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, confirm_subscription,
		"Confirm subscription of a contact.",
		"self\n"
		"jid  the JID of the contact to confirm the subscription of\n",
		""
) {
	Sluift::globals.eventLoop.runOnce();
	SluiftClient* client = getClient(L);
	JID jid(Lua::checkString(L, 2));
	client->getClient()->getSubscriptionManager()->confirmSubscription(jid);
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, cancel_subscription,
		"Cancel the subscription of a contact.",
		"self\n"
		"jid  the JID of the contact to cancel the subscription of\n",
		""
) {
	Sluift::globals.eventLoop.runOnce();
	SluiftClient* client = getClient(L);
	JID jid(Lua::checkString(L, 2));
	client->getClient()->getSubscriptionManager()->cancelSubscription(jid);
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, set_disco_info,
		"Sets the service discovery information for this client",
		"self\n"
		"disco_info  A structured representation of the service discovery information\n",
		""
) {
	SluiftClient* client = getClient(L);
	if (!lua_istable(L, 2)) {
		throw Lua::Exception("Missing disco info");
	}
	if (boost::shared_ptr<DiscoInfo> discoInfo = boost::dynamic_pointer_cast<DiscoInfo>(Sluift::globals.elementConvertor.convertFromLuaUntyped(L, 2, "disco_info"))) {
		client->getClient()->getDiscoManager()->setDiscoInfo(*discoInfo);
	}
	else {
		throw Lua::Exception("Illegal disco info");
	}
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, set_caps_node,
		"Sets the caps node of this client",
		"self\n"
		"node  The caps node (e.g. 'http://swift.im/sluift')\n",
		""
) {
	SluiftClient* client = getClient(L);
	std::string node(Lua::checkString(L, 2));
	client->getClient()->getDiscoManager()->setCapsNode(Lua::checkString(L, 2));
	return 0;
}

SLUIFT_LUA_FUNCTION_WITH_HELP(
		Client, jid,
		"Returns the JID of this client",
		"self\n",
		""
) {
	SluiftClient* client = getClient(L);
	lua_pushstring(L, client->getClient()->getJID().toString().c_str());
	return 1;
}

SLUIFT_LUA_FUNCTION(Client, __gc) {
	SluiftClient* client = getClient(L);
	delete client;
	return 0;
}