summaryrefslogtreecommitdiff
path: root/include/xline.h
blob: ff33da7d257c30813a55786310169b04456d3e5d (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
/*       +------------------------------------+
 *       | 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.
 *
 * ---------------------------------------------------
 */

#ifndef __XLINE_H
#define __XLINE_H

// include the common header files

#include <string>
#include <deque>
#include <vector>
#include "users.h"
#include "channels.h"

const int APPLY_GLINES		= 1;
const int APPLY_KLINES		= 2;
const int APPLY_QLINES		= 4;
const int APPLY_ZLINES		= 8;
const int APPLY_PERM_ONLY	= 16;
const int APPLY_ALL		= APPLY_GLINES | APPLY_KLINES | APPLY_QLINES | APPLY_ZLINES;

/** XLine is the base class for ban lines such as G lines and K lines.
 */
class CoreExport XLine : public classbase
{
 protected:

	InspIRCd* ServerInstance;
	void DefaultApply(User* u, char line);

 public:

	/** Create an XLine.
	 * @param s_time The set time
	 * @param d The duration of the xline
	 * @param src The sender of the xline
	 * @param re The reason of the xline
	 */
	XLine(InspIRCd* Instance, time_t s_time, long d, const char* src, const char* re, const char t)
		: ServerInstance(Instance), set_time(s_time), duration(d), type(t)
	{
		source = strdup(src);
		reason = strdup(re);
		expiry = set_time + duration;
	}

	/** Destructor
	 */
	virtual ~XLine()
	{
		free(reason);
		free(source);
	}

	/** Returns true whether or not the given user is covered by this line.
	 */
	virtual bool Matches(User *u) = 0;

	/** Returns true wether or not the given string exactly matches the gline
	 * (no wildcard use in this method) -- used for removal of a line
	 */
	virtual bool MatchesLiteral(const std::string &str) = 0;

	virtual bool Matches(const std::string &str) = 0;

	virtual void Apply(User* u);

	virtual void Unset() { }

	virtual void DisplayExpiry() = 0;

	virtual const char* Displayable() = 0;

	virtual void OnAdd() { }

	/** The time the line was added.
	 */
	time_t set_time;
	
	/** The duration of the ban, or 0 if permenant
	 */
	long duration;
	
	/** Source of the ban. This can be a servername or an oper nickname
	 */
	char* source;
	
	/** Reason for the ban
	 */
	char* reason;

	/** Expiry time
	 */
	time_t expiry;

	/** Q, K, etc. Don't change this. Constructors set it.
	 */
	const char type;
};

/** KLine class
 */
class CoreExport KLine : public XLine
{
  public:
	/** Create a K-Line.
	 * @param s_time The set time
	 * @param d The duration of the xline
	 * @param src The sender of the xline
	 * @param re The reason of the xline
	 * @param ident Ident to match
	 * @param host Host to match
	 */
	KLine(InspIRCd* Instance, time_t s_time, long d, const char* src, const char* re, const char* ident, const char* host) : XLine(Instance, s_time, d, src, re, 'K')
	{
		identmask = strdup(ident);
		hostmask = strdup(host);
		matchtext = this->identmask;
		matchtext.append("@").append(this->hostmask);
	}

	/** Destructor
	 */
	~KLine()
	{
		free(identmask);
		free(hostmask);
	}

	virtual bool Matches(User *u);

	virtual bool Matches(const std::string &str);

	virtual bool MatchesLiteral(const std::string &str);

	virtual void Apply(User* u);

	virtual void DisplayExpiry();

	virtual const char* Displayable();

	/** Ident mask
	 */
	char* identmask;
	/** Host mask
	 */
	char* hostmask;

	std::string matchtext;
};

/** GLine class
 */
class CoreExport GLine : public XLine
{
  public:
	/** Create a G-Line.
	 * @param s_time The set time
	 * @param d The duration of the xline
	 * @param src The sender of the xline
	 * @param re The reason of the xline
	 * @param ident Ident to match
	 * @param host Host to match
	 */
	GLine(InspIRCd* Instance, time_t s_time, long d, const char* src, const char* re, const char* ident, const char* host) : XLine(Instance, s_time, d, src, re, 'G')
	{
		identmask = strdup(ident);
		hostmask = strdup(host);
		matchtext = this->identmask;
		matchtext.append("@").append(this->hostmask);
	}

	/** Destructor
	 */
	~GLine()
	{
		free(identmask);
		free(hostmask);
	}

	virtual bool Matches(User *u);

	virtual bool Matches(const std::string &str);

	virtual bool MatchesLiteral(const std::string &str);

	virtual void Apply(User* u);

	virtual void DisplayExpiry();

	virtual const char* Displayable();

	/** Ident mask
	 */
	char* identmask;
	/** Host mask
	 */
	char* hostmask;

	std::string matchtext;
};

/** ELine class
 */
class CoreExport ELine : public XLine
{
  public:
	/** Create an E-Line.
	 * @param s_time The set time
	 * @param d The duration of the xline
	 * @param src The sender of the xline
	 * @param re The reason of the xline
	 * @param ident Ident to match
	 * @param host Host to match
	 */
	ELine(InspIRCd* Instance, time_t s_time, long d, const char* src, const char* re, const char* ident, const char* host) : XLine(Instance, s_time, d, src, re, 'E')
	{
		identmask = strdup(ident);
		hostmask = strdup(host);
		matchtext = this->identmask;
		matchtext.append("@").append(this->hostmask);
	}

	~ELine()
	{
		free(identmask);
		free(hostmask);
	}

	virtual bool Matches(User *u);

	virtual bool Matches(const std::string &str);

	virtual bool MatchesLiteral(const std::string &str);

	virtual void Unset();

	virtual void DisplayExpiry();

	virtual void OnAdd();

	virtual const char* Displayable();

	/** Ident mask
	 */
	char* identmask;
	/** Host mask
	 */
	char* hostmask;

	std::string matchtext;
};

/** ZLine class
 */
class CoreExport ZLine : public XLine
{
  public:
	/** Create a Z-Line.
	 * @param s_time The set time
	 * @param d The duration of the xline
	 * @param src The sender of the xline
	 * @param re The reason of the xline
	 * @param ip IP to match
	 */
	ZLine(InspIRCd* Instance, time_t s_time, long d, const char* src, const char* re, const char* ip) : XLine(Instance, s_time, d, src, re, 'Z')
	{
		ipaddr = strdup(ip);
	}

	/** Destructor
	 */
	~ZLine()
	{
		free(ipaddr);
	}

	virtual bool Matches(User *u);

	virtual bool Matches(const std::string &str);

	virtual bool MatchesLiteral(const std::string &str);

	virtual void Apply(User* u);

	virtual void DisplayExpiry();

	virtual const char* Displayable();

	/** IP mask
	 */
	char* ipaddr;
};

/** QLine class
 */
class CoreExport QLine : public XLine
{
  public:
	/** Create a G-Line.
	 * @param s_time The set time
	 * @param d The duration of the xline
	 * @param src The sender of the xline
	 * @param re The reason of the xline
	 * @param nickname Nickname to match
	 */
	QLine(InspIRCd* Instance, time_t s_time, long d, const char* src, const char* re, const char* nickname) : XLine(Instance, s_time, d, src, re, 'Q')
	{
		nick = strdup(nickname);
	}

	/** Destructor
	 */
	~QLine()
	{
		free(nick);

	}
	virtual bool Matches(User *u);

	virtual bool Matches(const std::string &str);

	virtual bool MatchesLiteral(const std::string &str);

	virtual void Apply(User* u);

	virtual void DisplayExpiry();

	virtual const char* Displayable();

	/** Nickname mask
	 */
	char* nick;
};

/** Contains an ident and host split into two strings
 */
typedef std::pair<std::string, std::string> IdentHostPair;


class CoreExport XLineFactory
{
 protected:

	InspIRCd* ServerInstance;
	const char type;

 public:

	XLineFactory(InspIRCd* Instance, const char t) : ServerInstance(Instance), type(t) { }
	
	virtual const char GetType() { return type; }

	virtual XLine* Generate(time_t set_time, long duration, const char* source, const char* reason, const char* xline_specific_mask) = 0;

	virtual ~XLineFactory() { }
};

/* Required forward declarations
 */
class ServerConfig;
class InspIRCd;

class GLineFactory;
class ELineFactory;
class QLineFactory;
class ZLineFactory;
class KLineFactory;

/** XLineManager is a class used to manage glines, klines, elines, zlines and qlines.
 */
class CoreExport XLineManager
{
 protected:
	/** The owner/creator of this class
	 */
	InspIRCd* ServerInstance;

	/** This functor is used by the std::sort() function to keep all lines in order
	 */
	static bool XSortComparison (const XLine *one, const XLine *two);

	/** Used to hold XLines which have not yet been applied.
	 */
	std::vector<XLine *> pending_lines;

	std::vector<XLine *> active_lines;

	std::map<char, XLineFactory*> line_factory;

	GLineFactory* GFact;
	ELineFactory* EFact;
	KLineFactory* KFact;
	QLineFactory* QFact;
	ZLineFactory* ZFact;

 public:

	std::map<char, std::map<std::string, XLine *> > lookup_lines;

	/** Constructor
	 * @param Instance A pointer to the creator object
	 */
	XLineManager(InspIRCd* Instance);

	~XLineManager();

	/** Split an ident and host into two seperate strings.
	 * This allows for faster matching.
	 */
	IdentHostPair IdentSplit(const std::string &ident_and_host);

	/** Checks what users match a given list of ELines and sets their ban exempt flag accordingly.
	 * @param ELines List of E:Lines to check.
	 */
	void CheckELines(std::map<std::string, XLine *> &ELines);

	/** Add a new GLine
	 * @param duration The duration of the line
	 * @param source The source of the line
	 * @param reason The reason for the line
	 * @param hostmask The hostmask
	 * @return True if the line was added successfully
	 */
	bool AddLine(XLine* line);

	/** Delete a GLine
	 * @param hostmask The host to remove
	 * @param type Type of line to remove
	 * @param simulate If this is true, don't actually remove the line, just return
	 * @return True if the line was deleted successfully
	 */
	bool DelLine(const char* hostmask, char type, bool simulate = false);

	/** Registers an xline factory.
	 * An xline factory is a class which when given a particular xline type,
	 * will generate a new XLine specialized to that type. For example if you
	 * pass the XLineFactory that handles glines some data it will return a
	 * pointer to a GLine, polymorphically represented as XLine. This is used where
	 * you do not know the full details of the item you wish to create, e.g. in a 
	 * server protocol module like m_spanningtree, when you receive xlines from other
	 * servers.
	 */
	bool RegisterFactory(XLineFactory* xlf);

	/** Unregisters an xline factory
	 */
	bool UnregisterFactory(XLineFactory* xlf);

	/** Get the XLineFactory for a specific type.
	 * Returns NULL if there is no known handler for this xline type
	 */
	XLineFactory* GetFactory(const char type);

	/** Check if a nickname matches a QLine
	 * @return nick The nick to check against
	 * @return The reason for the line if there is a match, or NULL if there is no match
	 */
	QLine* matches_qline(const char* nick);

	/** Check if a hostname matches a GLine
	 * @param user The user to check against
	 * @return The reason for the line if there is a match, or NULL if there is no match
	 */
	GLine* matches_gline(User* user);

	/** Check if a user's IP matches a ZLine
	 * @param user The user to check against
	 * @return The reason for the line if there is a match, or NULL if there is no match
	 */
	ZLine* matches_zline(User *user);

	/** Check if a hostname matches a KLine
	 * @param user The user to check against
	 * @return The reason for the line if there is a match, or NULL if there is no match
	 */
	KLine* matches_kline(User* user);

	/** Check if a hostname matches a ELine
	 * @param user The user to check against
	 * @return The reason for the line if there is a match, or NULL if there is no match
	 */
	ELine* matches_exception(User* user);

	/** Expire any lines that should be expired.
	 */
	void expire_lines();

	/** Apply any new lines that are pending to be applied
	 */
	void ApplyLines();

	/** Handle /STATS K
	 * @param user The username making the query
	 * @param results The string_list to receive the results
	 */
	void stats_k(User* user, string_list &results);

	/** Handle /STATS G
	 * @param user The username making the query
	 * @param results The string_list to receive the results
	 */
	void stats_g(User* user, string_list &results);

	/** Handle /STATS Q
	 * @param user The username making the query
	 * @param results The string_list to receive the results
	 */
	void stats_q(User* user, string_list &results);

	/** Handle /STATS Z
	 * @param user The username making the query
	 * @param results The string_list to receive the results
	 */
	void stats_z(User* user, string_list &results);

	/** Handle /STATS E
	 * @param user The username making the query
	 * @param results The string_list to receive the results
	 */
	void stats_e(User* user, string_list &results);

	/** Change creation time of a GLine
	 * @param host The hostname to change
	 * @param create_Time The new creation time
	 */
	void gline_set_creation_time(const char* host, time_t create_time);

	/** Change creation time of a QLine
	 * @param nick The nickmask to change
	 * @param create_Time The new creation time
	 */
	void qline_set_creation_time(const char* nick, time_t create_time);

	/** Change creation time of a ZLine
	 * @param ip The ipmask to change
	 * @param create_Time The new creation time
	 */
	void zline_set_creation_time(const char* ip, time_t create_time);

	/** Change creation time of a ELine
	 * @param host The hostname to change
	 * @param create_Time The new creation time
	 */
	void eline_set_creation_time(const char* host, time_t create_time);
};

class CoreExport GLineFactory : public XLineFactory
{
 public:
	GLineFactory(InspIRCd* Instance) : XLineFactory(Instance, 'G') { }

	XLine* Generate(time_t set_time, long duration, const char* source, const char* reason, const char* xline_specific_mask)
	{
		IdentHostPair ih = ServerInstance->XLines->IdentSplit(xline_specific_mask);
		return new GLine(ServerInstance, set_time, duration, source, reason, ih.first.c_str(), ih.second.c_str());
	}
};

class CoreExport ELineFactory : public XLineFactory
{
 public:
	ELineFactory(InspIRCd* Instance) : XLineFactory(Instance, 'E') { }

	XLine* Generate(time_t set_time, long duration, const char* source, const char* reason, const char* xline_specific_mask)
	{
		IdentHostPair ih = ServerInstance->XLines->IdentSplit(xline_specific_mask);
		return new ELine(ServerInstance, set_time, duration, source, reason, ih.first.c_str(), ih.second.c_str());
	}
};

class CoreExport KLineFactory : public XLineFactory
{
 public:
        KLineFactory(InspIRCd* Instance) : XLineFactory(Instance, 'K') { }

        XLine* Generate(time_t set_time, long duration, const char* source, const char* reason, const char* xline_specific_mask)
        {
                IdentHostPair ih = ServerInstance->XLines->IdentSplit(xline_specific_mask);
                return new KLine(ServerInstance, set_time, duration, source, reason, ih.first.c_str(), ih.second.c_str());
        }
};

class CoreExport QLineFactory : public XLineFactory
{
 public:
        QLineFactory(InspIRCd* Instance) : XLineFactory(Instance, 'Q') { }

        XLine* Generate(time_t set_time, long duration, const char* source, const char* reason, const char* xline_specific_mask)
        {
                return new QLine(ServerInstance, set_time, duration, source, reason, xline_specific_mask);
        }
};

class CoreExport ZLineFactory : public XLineFactory
{
 public:
        ZLineFactory(InspIRCd* Instance) : XLineFactory(Instance, 'Z') { }

        XLine* Generate(time_t set_time, long duration, const char* source, const char* reason, const char* xline_specific_mask)
        {
                return new ZLine(ServerInstance, set_time, duration, source, reason, xline_specific_mask);
        }
};

#endif