summaryrefslogtreecommitdiff
path: root/src/helperfuncs.cpp
blob: 5aeabfd8b40d4f3f940b55f5613a796386f964ad (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
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
 * See: http://www.inspircd.org/wiki/index.php/Credits
 *
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include "inspircd.h"
#include <stdarg.h>
#include "configreader.h"
#include "users.h"
#include "modules.h"
#include "wildcard.h"
#include "mode.h"
#include "xline.h"
#include "exitcodes.h"

static char TIMESTR[26];
static time_t LAST = 0;

/** Log()
 *  Write a line of text `text' to the logfile (and stdout, if in nofork) if the level `level'
 *  is greater than the configured loglevel.
 */
void InspIRCd::Log(int level, const char* text, ...)
{
	/* Do this check again here so that we save pointless vsnprintf calls */
	if ((level < Config->LogLevel) && !Config->forcedebug)
		return;

	va_list argsPtr;
	char textbuffer[65536];

	va_start(argsPtr, text);
	vsnprintf(textbuffer, 65536, text, argsPtr);
	va_end(argsPtr);

	this->Log(level, std::string(textbuffer));
}

void InspIRCd::Log(int level, const std::string &text)
{
	if (!this->Config)
		return;

	/* If we were given -debug we output all messages, regardless of configured loglevel */
	if ((level < Config->LogLevel) && !Config->forcedebug)
		return;

	if (Time() != LAST)
	{
		time_t local = Time();
		struct tm *timeinfo = localtime(&local);

		strlcpy(TIMESTR,asctime(timeinfo),26);
		TIMESTR[24] = ':';
		LAST = Time();
	}

	if (Config->log_file && Config->writelog)
	{
		std::string out = std::string(TIMESTR) + " " + text.c_str() + "\n";
		this->Logger->WriteLogLine(out);
	}

	if (Config->nofork)
	{
		printf("%s %s\n", TIMESTR, text.c_str());
	}
}

std::string InspIRCd::GetServerDescription(const char* servername)
{
	std::string description;

	FOREACH_MOD_I(this,I_OnGetServerDescription,OnGetServerDescription(servername,description));

	if (description != "")
	{
		return description;
	}
	else
	{
		// not a remote server that can be found, it must be me.
		return Config->ServerDesc;
	}
}

/* XXX - We don't use WriteMode for this because WriteMode is very slow and
 * this isnt. Basically WriteMode has to iterate ALL the users 'n' times for
 * the number of modes provided, e.g. if you send WriteMode 'og' to write to
 * opers with globops, and you have 2000 users, thats 4000 iterations. WriteOpers
 * uses the oper list, which means if you have 2000 users but only 5 opers,
 * it iterates 5 times.
 */
void InspIRCd::WriteOpers(const char* text, ...)
{
	char textbuffer[MAXBUF];
	va_list argsPtr;

	va_start(argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);

	this->WriteOpers(std::string(textbuffer));
}

void InspIRCd::WriteOpers(const std::string &text)
{
	for (std::vector<userrec*>::iterator i = this->all_opers.begin(); i != this->all_opers.end(); i++)
	{
		userrec* a = *i;
		if (IS_LOCAL(a) && a->modes[UM_SERVERNOTICE])
		{
			// send server notices to all with +s
			a->WriteServ("NOTICE %s :%s",a->nick,text.c_str());
		}
	}
}

void InspIRCd::ServerNoticeAll(char* text, ...)
{
	if (!text)
		return;

	char textbuffer[MAXBUF];
	char formatbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);

	snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s",Config->ServerName,textbuffer);

	for (std::vector<userrec*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
	{
		userrec* t = *i;
		t->WriteServ(std::string(formatbuffer));
	}
}

void InspIRCd::ServerPrivmsgAll(char* text, ...)
{
	if (!text)
		return;

	char textbuffer[MAXBUF];
	char formatbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);

	snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s",Config->ServerName,textbuffer);

	for (std::vector<userrec*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
	{
		userrec* t = *i;
		t->WriteServ(std::string(formatbuffer));
	}
}

void InspIRCd::WriteMode(const char* modes, int flags, const char* text, ...)
{
	char textbuffer[MAXBUF];
	int modelen;
	va_list argsPtr;

	if (!text || !modes || !flags)
	{
		this->Log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
		return;
	}

	va_start(argsPtr, text);
	vsnprintf(textbuffer, MAXBUF, text, argsPtr);
	va_end(argsPtr);
	modelen = strlen(modes);

	if (flags == WM_AND)
	{
		for (std::vector<userrec*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
		{
			userrec* t = *i;
			bool send_to_user = true;

			for (int n = 0; n < modelen; n++)
			{
				if (!t->modes[modes[n]-65])
				{
					send_to_user = false;
					break;
				}
			}
			if (send_to_user)
				t->WriteServ("NOTICE %s :%s",t->nick,textbuffer);
		}
	}
	else
	if (flags == WM_OR)
	{
		for (std::vector<userrec*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
		{
			userrec* t = *i;
			bool send_to_user = false;

			for (int n = 0; n < modelen; n++)
			{
				if (t->modes[modes[n]-65])
				{
					send_to_user = true;
					break;
				}
			}
			if (send_to_user)
				t->WriteServ("NOTICE %s :%s",t->nick,textbuffer);
		}
	}
}

/* Find a user record by nickname and return a pointer to it */

userrec* InspIRCd::FindNick(const std::string &nick)
{
	user_hash::iterator iter = clientlist->find(nick);

	if (iter == clientlist->end())
		/* Couldn't find it */
		return NULL;

	return iter->second;
}

userrec* InspIRCd::FindNick(const char* nick)
{
	user_hash::iterator iter = clientlist->find(nick);
	
	if (iter == clientlist->end())
		return NULL;

	return iter->second;
}

/* find a channel record by channel name and return a pointer to it */

chanrec* InspIRCd::FindChan(const char* chan)
{
	chan_hash::iterator iter = chanlist->find(chan);

	if (iter == chanlist->end())
		/* Couldn't find it */
		return NULL;

	return iter->second;
}

chanrec* InspIRCd::FindChan(const std::string &chan)
{
	chan_hash::iterator iter = chanlist->find(chan);

	if (iter == chanlist->end())
		/* Couldn't find it */
		return NULL;

	return iter->second;
}

/*
 * sends out an error notice to all connected clients (not to be used
 * lightly!)
 */
void InspIRCd::SendError(const std::string &s)
{
	for (std::vector<userrec*>::const_iterator i = this->local_users.begin(); i != this->local_users.end(); i++)
	{
		if ((*i)->registered == REG_ALL)
		{
		   	(*i)->WriteServ("NOTICE %s :%s",(*i)->nick,s.c_str());
	   	}
		else
		{
			/* Unregistered connections receive ERROR, not a NOTICE */
			(*i)->Write("ERROR :" + s);
		}
		/* This might generate a whole load of EAGAIN, but we dont really
		 * care about this, as if we call SendError something catastrophic
		 * has occured anyway, and we wont receive the events for these.
		 */
		(*i)->FlushWriteBuf();
	}
}

// this function counts all users connected, wether they are registered or NOT.
int InspIRCd::UserCount()
{
	return clientlist->size();
}

// this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
int InspIRCd::RegisteredUserCount()
{
	return clientlist->size() - this->UnregisteredUserCount();
}

int InspIRCd::ModeCount(const char mode)
{
	ModeHandler* mh = this->Modes->FindMode(mode, MODETYPE_USER);

	if (mh)
		return mh->GetCount();
	else
		return 0;
}

int InspIRCd::InvisibleUserCount()
{
	return ModeCount('i');
}

int InspIRCd::OperCount()
{
	return this->all_opers.size();
}

int InspIRCd::UnregisteredUserCount()
{
	return this->unregistered_count;
}

long InspIRCd::ChannelCount()
{
	return chanlist->size();
}

long InspIRCd::LocalUserCount()
{
	/* Doesnt count unregistered clients */
	return (local_users.size() - this->UnregisteredUserCount());
}
	
bool InspIRCd::IsChannel(const char *chname)
{
	char *c;

	/* check for no name - don't check for !*chname, as if it is empty, it won't be '#'! */
	if (!chname || *chname != '#')
	{
		return false;
	}

	c = (char *)chname + 1;
	while (*c)
	{
		switch (*c)
		{
			case ' ':
			case ',':
			case 7:
				return false;
		}

		c++;
	}
		
	/* too long a name - note funky pointer arithmetic here. */
	if ((c - chname) > CHANMAX)
	{
			return false;
	}

	return true;
}

bool InspIRCd::IsNick(const char* n)
{
	if (!n || !*n)
		return false;
 
	int p = 0;
	for (char* i = (char*)n; *i; i++, p++)
	{
		if ((*i >= 'A') && (*i <= '}'))
		{
			/* "A"-"}" can occur anywhere in a nickname */
			continue;
		}

		if ((((*i >= '0') && (*i <= '9')) || (*i == '-')) && (i > n))
		{
			/* "0"-"9", "-" can occur anywhere BUT the first char of a nickname */
			continue;
		}

		/* invalid character! abort */
		return false;
	}

	/* too long? or not -- pointer arithmetic rocks */
	return (p < NICKMAX - 1);
}


bool InspIRCd::IsIdent(const char* n)
{
	if (!n || !*n)
		return false;

	for (char* i = (char*)n; *i; i++)
	{
		if ((*i >= 'A') && (*i <= '}'))
		{
			continue;
		}

		if (((*i >= '0') && (*i <= '9')) || (*i == '-') || (*i == '.'))
		{
			continue;
		}

		return false;
	}

	return true;
}

void InspIRCd::OpenLog(char** argv, int argc)
{
	Config->MyDir = Config->GetFullProgDir();

	if (!*this->LogFileName)
	{
		if (Config->logpath == "")
		{
			Config->logpath = Config->MyDir + "/ircd.log";
		}

		Config->log_file = fopen(Config->logpath.c_str(),"a+");
	}
	else
	{
		Config->log_file = fopen(this->LogFileName,"a+");
	}

	if (!Config->log_file)
	{
		printf("ERROR: Could not write to logfile %s: %s\n\n", Config->logpath.c_str(), strerror(errno));
		Exit(EXIT_STATUS_LOG);
	}

	this->Logger = new FileLogger(this, Config->log_file);
}

void InspIRCd::CheckRoot()
{
	if (geteuid() == 0)
	{
		printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
		this->Log(DEFAULT,"Cant start as root");
		Exit(EXIT_STATUS_ROOT);
	}
}

void InspIRCd::CheckDie()
{
	if (*Config->DieValue)
	{
		printf("WARNING: %s\n\n",Config->DieValue);
		this->Log(DEFAULT,"Died because of <die> tag: %s",Config->DieValue);
		Exit(EXIT_STATUS_DIETAG);
	}
}

/* We must load the modules AFTER initializing the socket engine, now */
void InspIRCd::LoadAllModules()
{
	char configToken[MAXBUF];
	Config->module_names.clear();
	this->ModCount = -1;

	for (int count = 0; count < Config->ConfValueEnum(Config->config_data, "module"); count++)
	{
		Config->ConfValue(Config->config_data, "module", "name", count, configToken, MAXBUF);
		printf_c("[\033[1;32m*\033[0m] Loading module:\t\033[1;32m%s\033[0m\n",configToken);
		
		if (!this->LoadModule(configToken))		
		{
			this->Log(DEFAULT,"There was an error loading the module '%s': %s", configToken, this->ModuleError());
			printf_c("\n[\033[1;31m*\033[0m] There was an error loading the module '%s': %s\n\n", configToken, this->ModuleError());
			Exit(EXIT_STATUS_MODULE);
		}
	}
	printf_c("\nA total of \033[1;32m%d\033[0m module%s been loaded.\n", this->ModCount+1, this->ModCount+1 == 1 ? " has" : "s have");
	this->Log(DEFAULT,"Total loaded modules: %d", this->ModCount+1);
}

void InspIRCd::SendWhoisLine(userrec* user, userrec* dest, int numeric, const std::string &text)
{
	std::string copy_text = text;

	int MOD_RESULT = 0;
	FOREACH_RESULT_I(this, I_OnWhoisLine, OnWhoisLine(user, dest, numeric, copy_text));

	if (!MOD_RESULT)
		user->WriteServ("%d %s", numeric, copy_text.c_str());
}

void InspIRCd::SendWhoisLine(userrec* user, userrec* dest, int numeric, const char* format, ...)
{
	char textbuffer[MAXBUF];
	va_list argsPtr;
	va_start (argsPtr, format);
	vsnprintf(textbuffer, MAXBUF, format, argsPtr);
	va_end(argsPtr);

	this->SendWhoisLine(user, dest, numeric, std::string(textbuffer));
}