summaryrefslogtreecommitdiff
path: root/src/modules.cpp
blob: f460a6a28401b9df0baaa7c8e06cdbc0559c19ce (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
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
 * See: http://wiki.inspircd.org/Credits
 *
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include "inspircd.h"
#include "xline.h"
#include "socket.h"
#include "socketengine.h"
#include "command_parse.h"
#include "dns.h"
#include "exitcodes.h"

#ifndef WIN32
	#include <dirent.h>
#endif


// Version is a simple class for holding a modules version number
template<>
VersionBase<API_VERSION>::VersionBase(const std::string &modv, int flags)
: description(modv), Flags(flags)
{
}

template<>
bool VersionBase<API_VERSION>::CanLink(const std::string& other_data)
{
	return link_data == other_data;
}

Request::Request(Module* src, Module* dst, const char* idstr)
: id(idstr), source(src), dest(dst)
{
}

void Request::Send()
{
	if (dest)
		dest->OnRequest(*this);
}

Event::Event(Module* src, const std::string &eventid) : source(src), id(eventid) { }

void Event::Send()
{
	FOREACH_MOD(I_OnEvent,OnEvent(*this));
}

// These declarations define the behavours of the base class Module (which does nothing at all)

Module::Module() { }
CullResult Module::cull()
{
	return classbase::cull();
}
Module::~Module()
{
}

ModResult	Module::OnSendSnotice(char &snomask, std::string &type, const std::string &message) { return MOD_RES_PASSTHRU; }
void		Module::OnUserConnect(LocalUser*) { }
void		Module::OnUserQuit(User*, const std::string&, const std::string&) { }
void		Module::OnUserDisconnect(LocalUser*) { }
void		Module::OnUserJoin(Membership*, bool, bool, CUList&) { }
void		Module::OnPostJoin(Membership*) { }
void		Module::OnUserPart(Membership*, std::string&, CUList&) { }
void		Module::OnPreRehash(User*, const std::string&) { }
void		Module::OnModuleRehash(User*, const std::string&) { }
void		Module::OnRehash(User*) { }
ModResult	Module::OnUserPreJoin(User*, Channel*, const char*, std::string&, const std::string&) { return MOD_RES_PASSTHRU; }
void		Module::OnMode(User*, void*, int, const std::vector<std::string>&, const std::vector<TranslateType>&) { }
void		Module::OnOper(User*, const std::string&) { }
void		Module::OnPostOper(User*, const std::string&, const std::string &) { }
void		Module::OnInfo(User*) { }
void		Module::OnWhois(User*, User*) { }
ModResult	Module::OnUserPreInvite(User*, User*, Channel*, time_t) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnUserPreMessage(User*, void*, int, std::string&, char, CUList&) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnUserPreNotice(User*, void*, int, std::string&, char, CUList&) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnUserPreNick(User*, const std::string&) { return MOD_RES_PASSTHRU; }
void		Module::OnUserPostNick(User*, const std::string&) { }
ModResult	Module::OnPreMode(User*, User*, Channel*, const std::vector<std::string>&) { return MOD_RES_PASSTHRU; }
void		Module::On005Numeric(std::string&) { }
ModResult	Module::OnKill(User*, User*, const std::string&) { return MOD_RES_PASSTHRU; }
void		Module::OnLoadModule(Module*) { }
void		Module::OnUnloadModule(Module*) { }
void		Module::OnBackgroundTimer(time_t) { }
ModResult	Module::OnPreCommand(std::string&, std::vector<std::string>&, User *, bool, const std::string&) { return MOD_RES_PASSTHRU; }
void		Module::OnPostCommand(const std::string&, const std::vector<std::string>&, User *, CmdResult, const std::string&) { }
ModResult	Module::OnCheckReady(LocalUser*) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnUserRegister(LocalUser*) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnUserPreKick(User*, Membership*, const std::string&) { return MOD_RES_PASSTHRU; }
void		Module::OnUserKick(User*, Membership*, const std::string&, CUList&) { }
ModResult	Module::OnRawMode(User*, Channel*, const char, const std::string &, bool, int) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnCheckInvite(User*, Channel*) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnCheckKey(User*, Channel*, const std::string&) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnCheckLimit(User*, Channel*) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnCheckChannelBan(User*, Channel*) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnCheckBan(User*, Channel*, const std::string&) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnExtBanCheck(User*, Channel*, char) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnStats(char, User*, string_list&) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnChangeLocalUserHost(LocalUser*, const std::string&) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnChangeLocalUserGECOS(LocalUser*, const std::string&) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnPreTopicChange(User*, Channel*, const std::string&) { return MOD_RES_PASSTHRU; }
void		Module::OnEvent(Event&) { }
void		Module::OnRequest(Request&) { }
ModResult	Module::OnPassCompare(Extensible* ex, const std::string &password, const std::string &input, const std::string& hashtype) { return MOD_RES_PASSTHRU; }
void		Module::OnGlobalOper(User*) { }
void		Module::OnPostConnect(User*) { }
ModResult	Module::OnAddBan(User*, Channel*, const std::string &) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnDelBan(User*, Channel*, const std::string &) { return MOD_RES_PASSTHRU; }
void		Module::OnStreamSocketAccept(StreamSocket*, irc::sockets::sockaddrs*, irc::sockets::sockaddrs*) { }
int		Module::OnStreamSocketWrite(StreamSocket*, std::string&) { return -1; }
void		Module::OnStreamSocketClose(StreamSocket*) { }
void		Module::OnStreamSocketConnect(StreamSocket*) { }
int		Module::OnStreamSocketRead(StreamSocket*, std::string&) { return -1; }
void		Module::OnUserMessage(User*, void*, int, const std::string&, char, const CUList&) { }
void		Module::OnUserNotice(User*, void*, int, const std::string&, char, const CUList&) { }
void 		Module::OnRemoteKill(User*, User*, const std::string&, const std::string&) { }
void		Module::OnUserInvite(User*, User*, Channel*, time_t) { }
void		Module::OnPostTopicChange(User*, Channel*, const std::string&) { }
void		Module::OnGetServerDescription(const std::string&, std::string&) { }
void		Module::OnSyncUser(User*, Module*, void*) { }
void		Module::OnSyncChannel(Channel*, Module*, void*) { }
void		Module::OnSyncNetwork(Module*, void*) { }
void		Module::ProtoSendMode(void*, TargetTypeFlags, void*, const std::vector<std::string>&, const std::vector<TranslateType>&) { }
void		Module::OnDecodeMetaData(Extensible*, const std::string&, const std::string&) { }
void		Module::ProtoSendMetaData(void*, Extensible*, const std::string&, const std::string&) { }
void		Module::OnWallops(User*, const std::string&) { }
void		Module::OnChangeHost(User*, const std::string&) { }
void		Module::OnChangeName(User*, const std::string&) { }
void		Module::OnChangeIdent(User*, const std::string&) { }
void		Module::OnAddLine(User*, XLine*) { }
void		Module::OnDelLine(User*, XLine*) { }
void		Module::OnExpireLine(XLine*) { }
void 		Module::OnCleanup(int, void*) { }
ModResult	Module::OnChannelPreDelete(Channel*) { return MOD_RES_PASSTHRU; }
void		Module::OnChannelDelete(Channel*) { }
ModResult	Module::OnSetAway(User*, const std::string &) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnUserList(User*, Channel*) { return MOD_RES_PASSTHRU; }
ModResult	Module::OnWhoisLine(User*, User*, int&, std::string&) { return MOD_RES_PASSTHRU; }
void		Module::OnBuildNeighborList(User*, UserChanList&, std::map<User*,bool>&) { }
void		Module::OnGarbageCollect() { }
void 		Module::OnText(User*, void*, int, const std::string&, char, CUList&) { }
void		Module::OnRunTestSuite() { }
void		Module::OnNamesListItem(User*, Membership*, std::string&, std::string&) { }
ModResult	Module::OnNumeric(User*, unsigned int, const std::string&) { return MOD_RES_PASSTHRU; }
void		Module::OnHookIO(StreamSocket*, ListenSocket*) { }
ModResult   Module::OnAcceptConnection(int, ListenSocket*, irc::sockets::sockaddrs*, irc::sockets::sockaddrs*) { return MOD_RES_PASSTHRU; }
void		Module::OnSendWhoLine(User*, User*, Channel*, std::string&) { }
ModResult	Module::OnChannelRestrictionApply(User*, Channel*, const char*) { return MOD_RES_PASSTHRU; }

ModuleManager::ModuleManager() : ModCount(0)
{
}

ModuleManager::~ModuleManager()
{
}

bool ModuleManager::Attach(Implementation i, Module* mod)
{
	if (std::find(EventHandlers[i].begin(), EventHandlers[i].end(), mod) != EventHandlers[i].end())
		return false;

	EventHandlers[i].push_back(mod);
	return true;
}

bool ModuleManager::Detach(Implementation i, Module* mod)
{
	EventHandlerIter x = std::find(EventHandlers[i].begin(), EventHandlers[i].end(), mod);

	if (x == EventHandlers[i].end())
		return false;

	EventHandlers[i].erase(x);
	return true;
}

void ModuleManager::Attach(Implementation* i, Module* mod, size_t sz)
{
	for (size_t n = 0; n < sz; ++n)
		Attach(i[n], mod);
}

void ModuleManager::DetachAll(Module* mod)
{
	for (size_t n = I_BEGIN + 1; n != I_END; ++n)
		Detach((Implementation)n, mod);
}

bool ModuleManager::SetPriority(Module* mod, Priority s)
{
	for (size_t n = I_BEGIN + 1; n != I_END; ++n)
		SetPriority(mod, (Implementation)n, s);

	return true;
}

bool ModuleManager::SetPriority(Module* mod, Implementation i, Priority s, Module** modules, size_t sz)
{
	/** To change the priority of a module, we first find its position in the vector,
	 * then we find the position of the other modules in the vector that this module
	 * wants to be before/after. We pick off either the first or last of these depending
	 * on which they want, and we make sure our module is *at least* before or after
	 * the first or last of this subset, depending again on the type of priority.
	 */
	size_t swap_pos = 0;
	size_t source = 0;
	bool swap = true;
	bool found = false;

	/* Locate our module. This is O(n) but it only occurs on module load so we're
	 * not too bothered about it
	 */
	for (size_t x = 0; x != EventHandlers[i].size(); ++x)
	{
		if (EventHandlers[i][x] == mod)
		{
			source = x;
			found = true;
			break;
		}
	}

	/* Eh? this module doesnt exist, probably trying to set priority on an event
	 * theyre not attached to.
	 */
	if (!found)
		return false;

	switch (s)
	{
		/* Dummy value */
		case PRIORITY_DONTCARE:
			swap = false;
		break;
		/* Module wants to be first, sod everything else */
		case PRIORITY_FIRST:
			if (prioritizationState != PRIO_STATE_FIRST)
				swap = false;
			else
				swap_pos = 0;
		break;
		/* Module wants to be last. */
		case PRIORITY_LAST:
			if (prioritizationState != PRIO_STATE_FIRST)
				swap = false;
			else if (EventHandlers[i].empty())
				swap_pos = 0;
			else
				swap_pos = EventHandlers[i].size() - 1;
		break;
		/* Place this module after a set of other modules */
		case PRIORITY_AFTER:
		{
			/* Find the latest possible position */
			swap_pos = 0;
			swap = false;
			for (size_t x = 0; x != EventHandlers[i].size(); ++x)
			{
				for (size_t n = 0; n < sz; ++n)
				{
					if ((modules[n]) && (EventHandlers[i][x] == modules[n]) && (x >= swap_pos) && (source <= swap_pos))
					{
						swap_pos = x;
						swap = true;
					}
				}
			}
		}
		break;
		/* Place this module before a set of other modules */
		case PRIORITY_BEFORE:
		{
			swap_pos = EventHandlers[i].size() - 1;
			swap = false;
			for (size_t x = 0; x != EventHandlers[i].size(); ++x)
			{
				for (size_t n = 0; n < sz; ++n)
				{
					if ((modules[n]) && (EventHandlers[i][x] == modules[n]) && (x <= swap_pos) && (source >= swap_pos))
					{
						swap = true;
						swap_pos = x;
					}
				}
			}
		}
		break;
	}

	/* Do we need to swap? */
	if (swap && (swap_pos != source))
	{
		// We are going to change positions; we'll need to run again to verify all requirements
		if (prioritizationState == PRIO_STATE_LAST)
			prioritizationState = PRIO_STATE_AGAIN;
		/* Suggestion from Phoenix, "shuffle" the modules to better retain call order */
		int incrmnt = 1;

		if (source > swap_pos)
			incrmnt = -1;

		for (unsigned int j = source; j != swap_pos; j += incrmnt)
		{
			if (( j + incrmnt > EventHandlers[i].size() - 1) || (j + incrmnt < 0))
				continue;

			std::swap(EventHandlers[i][j], EventHandlers[i][j+incrmnt]);
		}
	}

	return true;
}

std::string& ModuleManager::LastError()
{
	return LastModuleError;
}

CmdResult InspIRCd::CallCommandHandler(const std::string &commandname, const std::vector<std::string>& parameters, User* user)
{
	return this->Parser->CallHandler(commandname, parameters, user);
}

bool InspIRCd::IsValidModuleCommand(const std::string &commandname, int pcnt, User* user)
{
	return this->Parser->IsValidCommand(commandname, pcnt, user);
}

void InspIRCd::AddCommand(Command *f)
{
	if (!this->Parser->AddCommand(f))
	{
		throw ModuleException("Command "+std::string(f->name)+" already exists.");
	}
}

void ModuleManager::AddService(ServiceProvider& item)
{
	switch (item.service)
	{
		case SERVICE_COMMAND:
			if (!ServerInstance->Parser->AddCommand(static_cast<Command*>(&item)))
				throw ModuleException("Command "+std::string(item.name)+" already exists.");
			return;
		case SERVICE_CMODE:
		case SERVICE_UMODE:
			if (!ServerInstance->Modes->AddMode(static_cast<ModeHandler*>(&item)))
				throw ModuleException("Mode "+std::string(item.name)+" already exists.");
			return;
		case SERVICE_METADATA:
			ServerInstance->Extensions.Register(static_cast<ExtensionItem*>(&item));
			return;
		case SERVICE_DATA:
		case SERVICE_IOHOOK:
		{
			DataProviders.insert(std::make_pair(item.name, &item));
			std::string::size_type slash = item.name.find('/');
			if (slash != std::string::npos)
			{
				DataProviders.insert(std::make_pair(item.name.substr(0, slash), &item));
				DataProviders.insert(std::make_pair(item.name.substr(slash + 1), &item));
			}
			return;
		}
		default:
			throw ModuleException("Cannot add unknown service type");
	}
}

ServiceProvider* ModuleManager::FindService(ServiceType type, const std::string& name)
{
	switch (type)
	{
		case SERVICE_DATA:
		case SERVICE_IOHOOK:
		{
			std::multimap<std::string, ServiceProvider*>::iterator i = DataProviders.find(name);
			if (i != DataProviders.end() && i->second->service == type)
				return i->second;
			return NULL;
		}
		// TODO implement finding of the other types
		default:
			throw ModuleException("Cannot find unknown service type");
	}
}

dynamic_reference_base::dynamic_reference_base(Module* Creator, const std::string& Name)
	: name(Name), value(NULL), creator(Creator)
{
	ServerInstance->Modules->ActiveDynrefs.push_back(this);
}

dynamic_reference_base::~dynamic_reference_base()
{
	for(unsigned int i = 0; i < ServerInstance->Modules->ActiveDynrefs.size(); i++)
	{
		if (ServerInstance->Modules->ActiveDynrefs[i] == this)
		{
			unsigned int last = ServerInstance->Modules->ActiveDynrefs.size() - 1;
			if (i != last)
				ServerInstance->Modules->ActiveDynrefs[i] = ServerInstance->Modules->ActiveDynrefs[last];
			ServerInstance->Modules->ActiveDynrefs.erase(ServerInstance->Modules->ActiveDynrefs.begin() + last);
			return;
		}
	}
}

void dynamic_reference_base::SetProvider(const std::string& newname)
{
	name = newname;
	ClearCache();
}

void dynamic_reference_base::lookup()
{
	if (!*this)
		throw ModuleException("Dynamic reference to '" + name + "' failed to resolve");
}

dynamic_reference_base::operator bool()
{
	if (!value)
	{
		std::multimap<std::string, ServiceProvider*>::iterator i = ServerInstance->Modules->DataProviders.find(name);
		if (i != ServerInstance->Modules->DataProviders.end())
			value = static_cast<DataProvider*>(i->second);
	}
	return value;
}

void InspIRCd::SendMode(const std::vector<std::string>& parameters, User *user)
{
	this->Modes->Process(parameters, user);
}

bool InspIRCd::AddResolver(Resolver* r, bool cached)
{
	if (!cached)
		return this->Res->AddResolverClass(r);
	else
	{
		r->TriggerCachedResult();
		delete r;
		return true;
	}
}

Module* ModuleManager::Find(const std::string &name)
{
	std::map<std::string, Module*>::iterator modfind = Modules.find(name);

	if (modfind == Modules.end())
		return NULL;
	else
		return modfind->second;
}

const std::vector<std::string> ModuleManager::GetAllModuleNames(int filter)
{
	std::vector<std::string> retval;
	for (std::map<std::string, Module*>::iterator x = Modules.begin(); x != Modules.end(); ++x)
		if (!filter || (x->second->GetVersion().Flags & filter))
			retval.push_back(x->first);
	return retval;
}

ConfigReader::ConfigReader()
{
	this->error = 0;
}


ConfigReader::~ConfigReader()
{
}

static ConfigTag* SlowGetTag(const std::string &tag, int index)
{
	ConfigTagList tags = ServerInstance->Config->ConfTags(tag);
	while (tags.first != tags.second)
	{
		if (!index)
			return tags.first->second;
		tags.first++;
		index--;
	}
	return NULL;
}

std::string ConfigReader::ReadValue(const std::string &tag, const std::string &name, const std::string &default_value, int index, bool allow_linefeeds)
{
	std::string result = default_value;
	if (!SlowGetTag(tag, index)->readString(name, result, allow_linefeeds))
	{
		this->error = CONF_VALUE_NOT_FOUND;
	}
	return result;
}

std::string ConfigReader::ReadValue(const std::string &tag, const std::string &name, int index, bool allow_linefeeds)
{
	return ReadValue(tag, name, "", index, allow_linefeeds);
}

bool ConfigReader::ReadFlag(const std::string &tag, const std::string &name, const std::string &default_value, int index)
{
	bool def = (default_value == "yes");
	return SlowGetTag(tag, index)->getBool(name, def);
}

bool ConfigReader::ReadFlag(const std::string &tag, const std::string &name, int index)
{
	return ReadFlag(tag, name, "", index);
}


int ConfigReader::ReadInteger(const std::string &tag, const std::string &name, const std::string &default_value, int index, bool need_positive)
{
	int v = atoi(default_value.c_str());
	int result = SlowGetTag(tag, index)->getInt(name, v);

	if ((need_positive) && (result < 0))
	{
		this->error = CONF_INT_NEGATIVE;
		return 0;
	}

	return result;
}

int ConfigReader::ReadInteger(const std::string &tag, const std::string &name, int index, bool need_positive)
{
	return ReadInteger(tag, name, "", index, need_positive);
}

long ConfigReader::GetError()
{
	long olderr = this->error;
	this->error = 0;
	return olderr;
}

int ConfigReader::Enumerate(const std::string &tag)
{
	ServerInstance->Logs->Log("MODULE", DEBUG, "Module is using ConfigReader::Enumerate on %s; this is slow!",
		tag.c_str());
	int i=0;
	while (SlowGetTag(tag, i)) i++;
	return i;
}

FileReader::FileReader(const std::string &filename)
{
	LoadFile(filename);
}

FileReader::FileReader()
{
}

std::string FileReader::Contents()
{
	std::string x;
	for (file_cache::iterator a = this->fc.begin(); a != this->fc.end(); a++)
	{
		x.append(*a);
		x.append("\r\n");
	}
	return x;
}

unsigned long FileReader::ContentSize()
{
	return this->contentsize;
}

void FileReader::CalcSize()
{
	unsigned long n = 0;
	for (file_cache::iterator a = this->fc.begin(); a != this->fc.end(); a++)
		n += (a->length() + 2);
	this->contentsize = n;
}

void FileReader::LoadFile(const std::string &filename)
{
	file_cache c;
	c.clear();
	if (ServerInstance->Config->ReadFile(c,filename.c_str()))
	{
		this->fc = c;
		this->CalcSize();
	}
}


FileReader::~FileReader()
{
}

bool FileReader::Exists()
{
	return (!(fc.size() == 0));
}

std::string FileReader::GetLine(int x)
{
	if ((x<0) || ((unsigned)x>fc.size()))
		return "";
	return fc[x];
}

int FileReader::FileSize()
{
	return fc.size();
}