summaryrefslogtreecommitdiff
path: root/include/configreader.h
blob: 5e8c62e0620d9e38bca9a8384b750bdfe37f7969 (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
/*       +------------------------------------+
 *       | 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 INSPIRCD_CONFIGREADER
#define INSPIRCD_CONFIGREADER

#include <sstream>
#include <string>
#include <vector>
#include <map>
#include "inspircd.h"
#include "globals.h"
#include "modules.h"
#include "socketengine.h"
#include "socket.h"

class ServerConfig;
class InspIRCd;
class InspSocket;

/** Types of data in the core config
 */
enum ConfigDataType
{
	DT_NOTHING       = 0,
	DT_INTEGER       = 1,
	DT_CHARPTR       = 2,
	DT_BOOLEAN       = 3,
	DT_ALLOW_NEWLINE = 128
};

/** Holds a config value, either string, integer or boolean.
 * Callback functions receive one or more of these, either on
 * their own as a reference, or in a reference to a deque of them.
 * The callback function can then alter the values of the ValueItem
 * classes to validate the settings.
 */
class ValueItem
{
	std::string v;
 public:
	ValueItem(int value);
	ValueItem(bool value);
	ValueItem(char* value);
	void Set(char* value);
	void Set(const char* val);
	void Set(int value);
	int GetInteger();
	char* GetString();
	bool GetBool();
};

/** The base class of the container 'ValueContainer'
 * used internally by the core to hold core values.
 */
class ValueContainerBase
{
 public:
	ValueContainerBase() { }
	virtual ~ValueContainerBase() { }
};

/** ValueContainer is used to contain pointers to different
 * core values such as the server name, maximum number of
 * clients etc.
 * It is specialized to hold a data type, then pointed at
 * a value in the ServerConfig class. When the value has been
 * read and validated, the Set method is called to write the
 * value safely in a type-safe manner.
 */
template<typename T> class ValueContainer : public ValueContainerBase
{
	T val;

 public:

	ValueContainer()
	{
		val = NULL;
	}

	ValueContainer(T Val)
	{
		val = Val;
	}

	void Set(T newval, size_t s)
	{
		memcpy(val, newval, s);
	}
};

/** A specialization of ValueContainer to hold a pointer to a bool
 */
typedef ValueContainer<bool*> ValueContainerBool;

/** A specialization of ValueContainer to hold a pointer to
 * an unsigned int
 */
typedef ValueContainer<unsigned int*> ValueContainerUInt;

/** A specialization of ValueContainer to hold a pointer to
 * a char array.
 */
typedef ValueContainer<char*> ValueContainerChar;

/** A specialization of ValueContainer to hold a pointer to
 * an int
 */
typedef ValueContainer<int*> ValueContainerInt;

/** A set of ValueItems used by multi-value validator functions
 */
typedef std::deque<ValueItem> ValueList;

/** A callback for validating a single value
 */
typedef bool (*Validator)(ServerConfig* conf, const char*, const char*, ValueItem&);
/** A callback for validating multiple value entries
 */
typedef bool (*MultiValidator)(ServerConfig* conf, const char*, char**, ValueList&, int*);
/** A callback indicating the end of a group of entries
 */
typedef bool (*MultiNotify)(ServerConfig* conf, const char*);

/** Holds a core configuration item and its callbacks
 */
struct InitialConfig
{
	char* tag;
	char* value;
	char* default_value;
	ValueContainerBase* val;
	ConfigDataType datatype;
	Validator validation_function;
};

/** Holds a core configuration item and its callbacks
 * where there may be more than one item
 */
struct MultiConfig
{
	const char*	tag;
	char*		items[12];
	char*		items_default[12];
	int		datatype[12];
	MultiNotify	init_function;
	MultiValidator	validation_function;
	MultiNotify	finish_function;
};

/** A set of oper types
 */
typedef std::map<irc::string,char*> opertype_t;

/** A Set of oper classes
 */
typedef std::map<irc::string,char*> operclass_t;


/** This class holds the bulk of the runtime configuration for the ircd.
 * It allows for reading new config values, accessing configuration files,
 * and storage of the configuration data needed to run the ircd, such as
 * the servername, connect classes, /ADMIN data, MOTDs and filenames etc.
 */
class ServerConfig : public Extensible
{
  private:
	/** Creator/owner
	 */
	InspIRCd* ServerInstance;

	/** This variable holds the names of all
	 * files included from the main one. This
	 * is used to make sure that no files are
	 * recursively included.
	 */
	std::vector<std::string> include_stack;

	/** This private method processes one line of
	 * configutation, appending errors to errorstream
	 * and setting error if an error has occured.
	 */
	bool ParseLine(ConfigDataHash &target, std::string &line, long linenumber, std::ostringstream &errorstream);
  
	/** Process an include directive
	 */
	bool DoInclude(ConfigDataHash &target, const std::string &file, std::ostringstream &errorstream);

	/** Check that there is only one of each configuration item
	 */
	bool CheckOnce(char* tag, bool bail, userrec* user);
  
  public:

	InspIRCd* GetInstance();
	  
  	/** This holds all the information in the config file,
	 * it's indexed by tag name to a vector of key/values.
	 */
	ConfigDataHash config_data;

	/** Max number of WhoWas entries per user.
	 */
	int WhoWasGroupSize;

	/** Max number of cumulative user-entries in WhoWas.
	 *  When max reached and added to, push out oldest entry FIFO style.
	 */
	int WhoWasMaxGroups;

	/** Max seconds a user is kept in WhoWas before being pruned.
	 */
	int WhoWasMaxKeep;

	/** Holds the server name of the local server
	 * as defined by the administrator.
	 */
	char ServerName[MAXBUF];
	
	/* Holds the network name the local server
	 * belongs to. This is an arbitary field defined
	 * by the administrator.
	 */
	char Network[MAXBUF];

	/** Holds the description of the local server
	 * as defined by the administrator.
	 */
	char ServerDesc[MAXBUF];

	/** Holds the admin's name, for output in
	 * the /ADMIN command.
	 */
	char AdminName[MAXBUF];

	/** Holds the email address of the admin,
	 * for output in the /ADMIN command.
	 */
	char AdminEmail[MAXBUF];

	/** Holds the admin's nickname, for output
	 * in the /ADMIN command
	 */
	char AdminNick[MAXBUF];

	/** The admin-configured /DIE password
	 */
	char diepass[MAXBUF];

	/** The admin-configured /RESTART password
	 */
	char restartpass[MAXBUF];

	/** The pathname and filename of the message of the
	 * day file, as defined by the administrator.
	 */
	char motd[MAXBUF];

	/** The pathname and filename of the rules file,
	 * as defined by the administrator.
	 */
	char rules[MAXBUF];

	/** The quit prefix in use, or an empty string
	 */
	char PrefixQuit[MAXBUF];

	/** The last string found within a <die> tag, or
	 * an empty string.
	 */
	char DieValue[MAXBUF];

	/** The DNS server to use for DNS queries
	 */
	char DNSServer[MAXBUF];

	/** This variable contains a space-seperated list
	 * of commands which are disabled by the
	 * administrator of the server for non-opers.
	 */
	char DisabledCommands[MAXBUF];

	/** The full path to the modules directory.
	 * This is either set at compile time, or
	 * overridden in the configuration file via
	 * the <options> tag.
	 */
	char ModPath[1024];

	/** The full pathname to the executable, as
	 * given in argv[0] when the program starts.
	 */
	char MyExecutable[1024];

	/** The file handle of the logfile. If this
	 * value is NULL, the log file is not open,
	 * probably due to a permissions error on
	 * startup (this should not happen in normal
	 * operation!).
	 */
	FILE *log_file;

	/** If this value is true, the owner of the
	 * server specified -nofork on the command
	 * line, causing the daemon to stay in the
	 * foreground.
	 */
	bool nofork;
	
	/** If this value if true then all log
	 * messages will be output, regardless of
	 * the level given in the config file.
	 * This is set with the -debug commandline
	 * option.
	 */
	bool forcedebug;
	
	/** If this is true then log output will be
	 * written to the logfile. This is the default.
	 * If you put -nolog on the commandline then
	 * the logfile will not be written.
	 * This is meant to be used in conjunction with
	 * -debug for debugging without filling up the
	 * hard disk.
	 */
	bool writelog;

	/** If this value is true, halfops have been
	 * enabled in the configuration file.
	 */
	bool AllowHalfop;

	/** The number of seconds the DNS subsystem
	 * will wait before timing out any request.
	 */
	int dns_timeout;

	/** The size of the read() buffer in the user
	 * handling code, used to read data into a user's
	 * recvQ.
	 */
	int NetBufferSize;

	/** The value to be used for listen() backlogs
	 * as default.
	 */
	int MaxConn;

	/** The soft limit value assigned to the irc server.
	 * The IRC server will not allow more than this
	 * number of local users.
	 */
	unsigned int SoftLimit;

	/** Maximum number of targets for a multi target command
	 * such as PRIVMSG or KICK
	 */
	unsigned int MaxTargets;

	/** The maximum number of /WHO results allowed
	 * in any single /WHO command.
	 */
	int MaxWhoResults;

	/** True if the DEBUG loglevel is selected.
	 */
	int debugging;

	/** The loglevel in use by the IRC server
	 */
	int LogLevel;

	/** How many seconds to wait before exiting
	 * the program when /DIE is correctly issued.
	 */
	int DieDelay;

	/** True if we're going to hide netsplits as *.net *.split for non-opers
	 */
	bool HideSplits;

	/** True if we're going to hide ban reasons for non-opers (e.g. G-Lines,
	 * K-Lines, Z-Lines)
	 */
	bool HideBans;

	/** If this is enabled then operators will
	 * see invisible (+i) channels in /whois.
	 */
	bool OperSpyWhois;

	/** Set to a non-empty string to obfuscate the server name of users in WHOIS
	 */
	char HideWhoisServer[MAXBUF];

	/** A list of IP addresses the server is listening
	 * on.
	 */
	char addrs[MAXBUF][255];

	/** The MOTD file, cached in a file_cache type.
	 */
	file_cache MOTD;

	/** The RULES file, cached in a file_cache type.
	 */
	file_cache RULES;

	/** The full pathname and filename of the PID
	 * file as defined in the configuration.
	 */
	char PID[1024];

	/** The connect classes in use by the IRC server.
	 */
	ClassVector Classes;

	/** A list of module names (names only, no paths)
	 * which are currently loaded by the server.
	 */
	std::vector<std::string> module_names;

	/** A list of ports which the server is listening on
	 */
	int ports[255];

	/** A list of the file descriptors for the listening client ports
	 */
	ListenSocket* openSockfd[255];

	/** Boolean sets of which modules implement which functions
	 */
	char implement_lists[255][255];

	/** Global implementation list
	 */
	char global_implementation[255];

	/** A list of ports claimed by IO Modules
	 */
	std::map<int,Module*> IOHookModule;

	std::map<InspSocket*, Module*> SocketIOHookModule;

	/** The 005 tokens of this server (ISUPPORT)
	 * populated/repopulated upon loading or unloading
	 * modules.
	 */
	std::string data005;
	std::vector<std::string> isupport;

	/** STATS characters in this list are available
	 * only to operators.
	 */
	char UserStats[MAXBUF];
	
	/** The path and filename of the ircd.log file
	 */
	std::string logpath;

	/** Custom version string, which if defined can replace the system info in VERSION.
	 */
	char CustomVersion[MAXBUF];

	/** List of u-lined servers
	 */
	std::vector<irc::string> ulines;

	/** Max banlist sizes for channels (the std::string is a glob)
	 */
	std::map<std::string,int> maxbans;

	/** Directory where the inspircd binary resides
	 */
	std::string MyDir;

	/** If set to true, no user DNS lookups are to be performed
	 */
	bool NoUserDns;

	/** If set to true, provide syntax hints for unknown commands
	 */
	bool SyntaxHints;

	/** If set to true, users appear to quit then rejoin when their hosts change.
	 * This keeps clients synchronized properly.
	 */
	bool CycleHosts;

	/** If set to true, prefixed channel NOTICEs and PRIVMSGs will have the prefix
	 *  added to the outgoing text for undernet style msg prefixing.
	 */
	bool UndernetMsgPrefix;

	/** All oper type definitions from the config file
	 */
	opertype_t opertypes;

	/** All oper class definitions from the config file
	 */
	operclass_t operclass;

	/** Saved argv from startup
	 */
	char** argv;

	/** Saved argc from startup
	 */
	int argc;

	/** Construct a new ServerConfig
	 */
	ServerConfig(InspIRCd* Instance);

	/** Clears the include stack in preperation for a Read() call.
	 */
	void ClearStack();

	/** Update the 005 vector
	 */
	void Update005();

	/** Send the 005 numerics (ISUPPORT) to a user
	 */
	void Send005(userrec* user);

	/** Read the entire configuration into memory
	 * and initialize this class. All other methods
	 * should be used only by the core.
	 */
	void Read(bool bail, userrec* user);

	/** Read a file into a file_cache object
	 */
	bool ReadFile(file_cache &F, const char* fname);

	/** Load 'filename' into 'target', with the new config parser everything is parsed into
	 * tag/key/value at load-time rather than at read-value time.
	 */

	/** Report a configuration error given in errormessage.
	 * @param bail If this is set to true, the error is sent to the console, and the program exits
	 * @param user If this is set to a non-null value, and bail is false, the errors are spooled to
	 * this user as SNOTICEs.
	 * If the parameter is NULL, the messages are spooled to all users via WriteOpers as SNOTICEs.
	 */
	void ReportConfigError(const std::string &errormessage, bool bail, userrec* user);

	/** Load 'filename' into 'target', with the new config parser everything is parsed into
	 * tag/key/value at load-time rather than at read-value time.
	 */
	bool LoadConf(ConfigDataHash &target, const char* filename, std::ostringstream &errorstream);

	/** Load 'filename' into 'target', with the new config parser everything is parsed into
	 * tag/key/value at load-time rather than at read-value time.
	 */
	bool LoadConf(ConfigDataHash &target, const std::string &filename, std::ostringstream &errorstream);
	
	/* Both these return true if the value existed or false otherwise */
	
	/** Writes 'length' chars into 'result' as a string
	 */
	bool ConfValue(ConfigDataHash &target, const char* tag, const char* var, int index, char* result, int length, bool allow_linefeeds = false);
	bool ConfValue(ConfigDataHash &target, const char* tag, const char* var, const char* default_value, int index, char* result, int length, bool allow_linefeeds = false);

	/** Writes 'length' chars into 'result' as a string
	 */
	bool ConfValue(ConfigDataHash &target, const std::string &tag, const std::string &var, int index, std::string &result, bool allow_linefeeds = false);
	bool ConfValue(ConfigDataHash &target, const std::string &tag, const std::string &var, const std::string &default_value, int index, std::string &result, bool allow_linefeeds = false);
	
	/** Tries to convert the value to an integer and write it to 'result'
	 */
	bool ConfValueInteger(ConfigDataHash &target, const char* tag, const char* var, int index, int &result);
	bool ConfValueInteger(ConfigDataHash &target, const char* tag, const char* var, const char* default_value, int index, int &result);
	/** Tries to convert the value to an integer and write it to 'result'
	 */
	bool ConfValueInteger(ConfigDataHash &target, const std::string &tag, const std::string &var, int index, int &result);
	bool ConfValueInteger(ConfigDataHash &target, const std::string &tag, const std::string &var, const std::string &default_value, int index, int &result);
	
	/** Returns true if the value exists and has a true value, false otherwise
	 */
	bool ConfValueBool(ConfigDataHash &target, const char* tag, const char* var, int index);
	bool ConfValueBool(ConfigDataHash &target, const char* tag, const char* var, const char* default_value, int index);
	/** Returns true if the value exists and has a true value, false otherwise
	 */
	bool ConfValueBool(ConfigDataHash &target, const std::string &tag, const std::string &var, int index);
	bool ConfValueBool(ConfigDataHash &target, const std::string &tag, const std::string &var, const std::string &default_value, int index);
	
	/** Returns the number of occurences of tag in the config file
	 */
	int ConfValueEnum(ConfigDataHash &target, const char* tag);
	/** Returns the number of occurences of tag in the config file
	 */
	int ConfValueEnum(ConfigDataHash &target, const std::string &tag);
	
	/** Returns the numbers of vars inside the index'th 'tag in the config file
	 */
	int ConfVarEnum(ConfigDataHash &target, const char* tag, int index);
	/** Returns the numbers of vars inside the index'th 'tag in the config file
	 */
	int ConfVarEnum(ConfigDataHash &target, const std::string &tag, int index);
	
	Module* GetIOHook(int port);
	bool AddIOHook(int port, Module* iomod);
	bool DelIOHook(int port);
	Module* GetIOHook(InspSocket* is);
	bool AddIOHook(Module* iomod, InspSocket* is);
	bool DelIOHook(InspSocket* is);

	static std::string GetFullProgDir(char** argv, int argc);
	static bool DirValid(const char* dirandfile);
	static char* CleanFilename(char* name);
	static bool FileExists(const char* file);
	
};

bool InitializeDisabledCommands(const char* data, InspIRCd* ServerInstance);

bool InitTypes(ServerConfig* conf, const char* tag);
bool InitClasses(ServerConfig* conf, const char* tag);
bool DoType(ServerConfig* conf, const char* tag, char** entries, ValueList &values, int* types);
bool DoClass(ServerConfig* conf, const char* tag, char** entries, ValueList &values, int* types);
bool DoneClassesAndTypes(ServerConfig* conf, const char* tag);

#endif