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Date:: Sat Apr 16 09:23:01 2005 UTC
Message:: use strdup() to add oper hostname mask.
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1 /*
2  * ngIRCd -- The Next Generation IRC Daemon
3  * Copyright (c)2001,2002 Alexander Barton (alex@barton.de)
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  * Please read the file COPYING, README and AUTHORS for more information.
10  *
11  * Configuration management (reading, parsing & validation)
12  */
13 
14 
15 #include "portab.h"
16 
17 static char UNUSED id[] = "$Id: conf.c,v 1.76 2005/04/16 09:23:01 fw Exp $";
18 
19 #include "imp.h"
20 #include <assert.h>
21 #include <errno.h>
22 #ifdef PROTOTYPES
23 #	include <stdarg.h>
24 #else
25 #	include <varargs.h>
26 #endif
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <strings.h>
31 #include <unistd.h>
32 #include <pwd.h>
33 #include <grp.h>
34 #include <sys/types.h>
35 #include <unistd.h>
36 
37 #ifdef HAVE_CTYPE_H
38 # include <ctype.h>
39 #endif
40 
41 #include "ngircd.h"
42 #include "conn.h"
43 #include "client.h"
44 #include "defines.h"
45 #include "log.h"
46 #include "resolve.h"
47 #include "tool.h"
48 
49 #include "exp.h"
50 #include "conf.h"
51 
52 
53 LOCAL bool Use_Log = true;
54 LOCAL CONF_SERVER New_Server;
55 LOCAL int New_Server_Idx;
56 
57 
58 LOCAL void Set_Defaults PARAMS(( bool InitServers ));
59 LOCAL void Read_Config PARAMS(( void ));
60 LOCAL void Validate_Config PARAMS(( bool TestOnly ));
61 
62 LOCAL void Handle_GLOBAL PARAMS(( int Line, char *Var, char *Arg ));
63 LOCAL void Handle_OPERATOR PARAMS(( int Line, char *Var, char *Arg ));
64 LOCAL void Handle_SERVER PARAMS(( int Line, char *Var, char *Arg ));
65 LOCAL void Handle_CHANNEL PARAMS(( int Line, char *Var, char *Arg ));
66 
67 LOCAL void Config_Error PARAMS(( const int Level, const char *Format, ... ));
68 
69 LOCAL void Config_Error_NaN PARAMS(( const int LINE, const char *Value ));
70 LOCAL void Config_Error_TooLong PARAMS(( const int LINE, const char *Value ));
71 
72 LOCAL void Init_Server_Struct PARAMS(( CONF_SERVER *Server ));
73 
74 
75 GLOBAL void
76 Conf_Init( void )
77 {
78 	Set_Defaults( true );
79 	Read_Config( );
80 	Validate_Config( false );
81 } /* Config_Init */
82 
83 
84 GLOBAL void
85 Conf_Rehash( void )
86 {
87 	Set_Defaults( false );
88 	Read_Config( );
89 	Validate_Config( false );
90 } /* Config_Rehash */
91 
92 
93 GLOBAL int
94 Conf_Test( void )
95 {
96 	/* Read configuration, validate and output it. */
97 
98 	struct passwd *pwd;
99 	struct group *grp;
100 	int i;
101 
102 	Use_Log = false;
103 	Set_Defaults( true );
104 
105 	Read_Config( );
106 	Validate_Config( true );
107 
108 	/* If stdin and stdout ("you can read our nice message and we can
109 	 * read in your keypress") are valid tty's, wait for a key: */
110 	if( isatty( fileno( stdin )) && isatty( fileno( stdout )))
111 	{
112 		puts( "OK, press enter to see a dump of your service configuration ..." );
113 		getchar( );
114 	}
115 	else puts( "Ok, dump of your server configuration follows:\n" );
116 
117 	puts( "[GLOBAL]" );
118 	printf( "  Name = %s\n", Conf_ServerName );
119 	printf( "  Info = %s\n", Conf_ServerInfo );
120 	printf( "  Password = %s\n", Conf_ServerPwd );
121 	printf( "  AdminInfo1 = %s\n", Conf_ServerAdmin1 );
122 	printf( "  AdminInfo2 = %s\n", Conf_ServerAdmin2 );
123 	printf( "  AdminEMail = %s\n", Conf_ServerAdminMail );
124 	printf( "  MotdFile = %s\n", Conf_MotdFile );
125 	printf( "  MotdPhrase = %s\n", Conf_MotdPhrase );
126 	printf( "  ChrootDir = %s\n", Conf_Chroot );
127 	printf( "  PidFile = %s\n", Conf_PidFile);
128 	printf( "  Ports = " );
129 	for( i = 0; i < Conf_ListenPorts_Count; i++ )
130 	{
131 		if( i != 0 ) printf( ", " );
132 		printf( "%u", (unsigned int) Conf_ListenPorts[i] );
133 	}
134 	puts( "" );
135 	printf( "  Listen = %s\n", Conf_ListenAddress );
136 	pwd = getpwuid( Conf_UID );
137 	if( pwd ) printf( "  ServerUID = %s\n", pwd->pw_name );
138 	else printf( "  ServerUID = %ld\n", (long)Conf_UID );
139 	grp = getgrgid( Conf_GID );
140 	if( grp ) printf( "  ServerGID = %s\n", grp->gr_name );
141 	else printf( "  ServerGID = %ld\n", (long)Conf_GID );
142 	printf( "  PingTimeout = %d\n", Conf_PingTimeout );
143 	printf( "  PongTimeout = %d\n", Conf_PongTimeout );
144 	printf( "  ConnectRetry = %d\n", Conf_ConnectRetry );
145 	printf( "  OperCanUseMode = %s\n", Conf_OperCanMode == true? "yes" : "no" );
146 	printf( "  OperServerMode = %s\n", Conf_OperServerMode == true? "yes" : "no" );
147 	if( Conf_MaxConnections > 0 ) printf( "  MaxConnections = %ld\n", Conf_MaxConnections );
148 	else printf( "  MaxConnections = -1\n" );
149 	if( Conf_MaxConnectionsIP > 0 ) printf( "  MaxConnectionsIP = %d\n", Conf_MaxConnectionsIP );
150 	else printf( "  MaxConnectionsIP = -1\n" );
151 	if( Conf_MaxJoins > 0 ) printf( "  MaxJoins = %d\n", Conf_MaxJoins );
152 	else printf( "  MaxJoins = -1\n" );
153 	puts( "" );
154 
155 	for( i = 0; i < Conf_Oper_Count; i++ )
156 	{
157 		if( ! Conf_Oper[i].name[0] ) continue;
158 		
159 		/* Valid "Operator" section */
160 		puts( "[OPERATOR]" );
161 		printf( "  Name = %s\n", Conf_Oper[i].name );
162 		printf( "  Password = %s\n", Conf_Oper[i].pwd );
163 		if ( Conf_Oper[i].mask ) printf( "  Mask = %s\n", Conf_Oper[i].mask );
164 		puts( "" );
165 	}
166 
167 	for( i = 0; i < MAX_SERVERS; i++ )
168 	{
169 		if( ! Conf_Server[i].name[0] ) continue;
170 		
171 		/* Valid "Server" section */
172 		puts( "[SERVER]" );
173 		printf( "  Name = %s\n", Conf_Server[i].name );
174 		printf( "  Host = %s\n", Conf_Server[i].host );
175 		printf( "  Port = %d\n", Conf_Server[i].port );
176 		printf( "  MyPassword = %s\n", Conf_Server[i].pwd_in );
177 		printf( "  PeerPassword = %s\n", Conf_Server[i].pwd_out );
178 		printf( "  Group = %d\n", Conf_Server[i].group );
179 		puts( "" );
180 	}
181 
182 	for( i = 0; i < Conf_Channel_Count; i++ )
183 	{
184 		if( ! Conf_Channel[i].name[0] ) continue;
185 		
186 		/* Valid "Channel" section */
187 		puts( "[CHANNEL]" );
188 		printf( "  Name = %s\n", Conf_Channel[i].name );
189 		printf( "  Modes = %s\n", Conf_Channel[i].modes );
190 		printf( "  Topic = %s\n", Conf_Channel[i].topic );
191 		puts( "" );
192 	}
193 	
194 	return 0;
195 } /* Conf_Test */
196 
197 
198 GLOBAL void
199 Conf_UnsetServer( CONN_ID Idx )
200 {
201 	/* Set next time for next connection attempt, if this is a server
202 	 * link that is (still) configured here. If the server is set as
203 	 * "once", delete it from our configuration.
204 	 * Non-Server-Connections will be silently ignored. */
205 
206 	int i;
207 
208 	/* Check all our configured servers */
209 	for( i = 0; i < MAX_SERVERS; i++ )
210 	{
211 		if( Conf_Server[i].conn_id != Idx ) continue;
212 
213 		/* Gotcha! Mark server configuration as "unused": */
214 		Conf_Server[i].conn_id = NONE;
215 
216 		if( Conf_Server[i].flags & CONF_SFLAG_ONCE )
217 		{
218 			/* Delete configuration here */
219 			Init_Server_Struct( &Conf_Server[i] );
220 		}
221 		else
222 		{
223 			/* Set time for next connect attempt */
224 			if( Conf_Server[i].lasttry <  time( NULL ) - Conf_ConnectRetry )
225 			{
226 				/* Okay, the connection was established "long enough": */
227 				Conf_Server[i].lasttry = time( NULL ) - Conf_ConnectRetry + RECONNECT_DELAY;
228 			}
229 		}
230 	}
231 } /* Conf_UnsetServer */
232 
233 
234 GLOBAL void
235 Conf_SetServer( int ConfServer, CONN_ID Idx )
236 {
237 	/* Set connection for specified configured server */
238 
239 	assert( ConfServer > NONE );
240 	assert( Idx > NONE );
241 
242 	Conf_Server[ConfServer].conn_id = Idx;
243 } /* Conf_SetServer */
244 
245 
246 GLOBAL int
247 Conf_GetServer( CONN_ID Idx )
248 {
249 	/* Get index of server in configuration structure */
250 	
251 	int i = 0;
252 	
253 	assert( Idx > NONE );
254 
255 	for( i = 0; i < MAX_SERVERS; i++ )
256 	{
257 		if( Conf_Server[i].conn_id == Idx ) return i;
258 	}
259 	return NONE;
260 } /* Conf_GetServer */
261 
262 
263 GLOBAL bool
264 Conf_EnableServer( char *Name, UINT16 Port )
265 {
266 	/* Enable specified server and adjust port */
267 
268 	int i;
269 
270 	assert( Name != NULL );
271 
272 	for( i = 0; i < MAX_SERVERS; i++ )
273 	{
274 		if( strcasecmp( Conf_Server[i].name, Name ) == 0 )
275 		{
276 			/* Gotcha! Set port and enable server: */
277 			Conf_Server[i].port = Port;
278 			Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
279 			return true;
280 		}
281 	}
282 	return false;
283 } /* Conf_EnableServer */
284 
285 
286 GLOBAL bool
287 Conf_DisableServer( char *Name )
288 {
289 	/* Enable specified server and adjust port */
290 
291 	int i;
292 
293 	assert( Name != NULL );
294 
295 	for( i = 0; i < MAX_SERVERS; i++ )
296 	{
297 		if( strcasecmp( Conf_Server[i].name, Name ) == 0 )
298 		{
299 			/* Gotcha! Disable and disconnect server: */
300 			Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
301 			if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", true);
302 			return true;
303 		}
304 	}
305 	return false;
306 } /* Conf_DisableServer */
307 
308 
309 GLOBAL bool
310 Conf_AddServer( char *Name, UINT16 Port, char *Host, char *MyPwd, char *PeerPwd )
311 {
312 	/* Add new server to configuration */
313 
314 	int i;
315 
316 	assert( Name != NULL );
317 	assert( Host != NULL );
318 	assert( MyPwd != NULL );
319 	assert( PeerPwd != NULL );
320 
321 	/* Search unused item in server configuration structure */
322 	for( i = 0; i < MAX_SERVERS; i++ )
323 	{
324 		/* Is this item used? */
325 		if( ! Conf_Server[i].name[0] ) break;
326 	}
327 	if( i >= MAX_SERVERS ) return false;
328 
329 	Init_Server_Struct( &Conf_Server[i] );
330 	strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
331 	strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
332 	strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
333 	strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
334 	Conf_Server[i].port = Port;
335 	Conf_Server[i].flags = CONF_SFLAG_ONCE;
336 	
337 	return true;
338 } /* Conf_AddServer */
339 
340 
341 LOCAL void
342 Set_Defaults( bool InitServers )
343 {
344 	/* Initialize configuration variables with default values. */
345 
346 	int i;
347 
348 	strcpy( Conf_ServerName, "" );
349 	sprintf( Conf_ServerInfo, "%s %s", PACKAGE_NAME, PACKAGE_VERSION );
350 	strcpy( Conf_ServerPwd, "" );
351 
352 	strcpy( Conf_ServerAdmin1, "" );
353 	strcpy( Conf_ServerAdmin2, "" );
354 	strcpy( Conf_ServerAdminMail, "" );
355 
356 	strlcpy( Conf_MotdFile, SYSCONFDIR, sizeof( Conf_MotdFile ));
357 	strlcat( Conf_MotdFile, MOTD_FILE, sizeof( Conf_MotdFile ));
358 
359 	strlcpy( Conf_MotdPhrase, MOTD_PHRASE, sizeof( Conf_MotdPhrase ));
360 
361 	strlcpy( Conf_Chroot, CHROOT_DIR, sizeof( Conf_Chroot ));
362 
363 	strlcpy( Conf_PidFile, PID_FILE, sizeof( Conf_PidFile ));
364 
365 	Conf_ListenPorts_Count = 0;
366 	strcpy( Conf_ListenAddress, "" );
367 
368 	Conf_UID = Conf_GID = 0;
369 	
370 	Conf_PingTimeout = 120;
371 	Conf_PongTimeout = 20;
372 
373 	Conf_ConnectRetry = 60;
374 
375 	Conf_Oper_Count = 0;
376 	Conf_Channel_Count = 0;
377 
378 	Conf_OperCanMode = false;
379 	Conf_OperServerMode = false;
380 	
381 	Conf_MaxConnections = -1;
382 	Conf_MaxConnectionsIP = 5;
383 	Conf_MaxJoins = 10;
384 
385 	/* Initialize server configuration structures */
386 	if( InitServers ) for( i = 0; i < MAX_SERVERS; Init_Server_Struct( &Conf_Server[i++] ));
387 } /* Set_Defaults */
388 
389 
390 LOCAL void
391 Read_Config( void )
392 {
393 	/* Read configuration file. */
394 
395 	char section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
396 	int line, i, n;
397 	FILE *fd;
398 
399 	/* Open configuration file */
400 	fd = fopen( NGIRCd_ConfFile, "r" );
401 	if( ! fd )
402 	{
403 		/* No configuration file found! */
404 		Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s", NGIRCd_ConfFile, strerror( errno ));
405 		Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
406 		exit( 1 );
407 	}
408 
409 	Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
410 
411 	/* Clean up server configuration structure: mark all already
412 	 * configured servers as "once" so that they are deleted
413 	 * after the next disconnect and delete all unused servers.
414 	 * And delete all servers which are "duplicates" of servers
415 	 * that are already marked as "once" (such servers have been
416 	 * created by the last rehash but are now useless). */
417 	for( i = 0; i < MAX_SERVERS; i++ )
418 	{
419 		if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
420 		else
421 		{
422 			/* This structure is in use ... */
423 			if( Conf_Server[i].flags & CONF_SFLAG_ONCE )
424 			{
425 				/* Check for duplicates */
426 				for( n = 0; n < MAX_SERVERS; n++ )
427 				{
428 					if( n == i ) continue;
429 
430 					if( Conf_Server[i].conn_id == Conf_Server[n].conn_id )
431 					{
432 						Init_Server_Struct( &Conf_Server[n] );
433 						Log( LOG_DEBUG, "Deleted unused duplicate server %d (kept %d).", n, i );
434 					}
435 				}
436 			}
437 			else
438 			{
439 				/* Mark server as "once" */
440 				Conf_Server[i].flags |= CONF_SFLAG_ONCE;
441 				Log( LOG_DEBUG, "Marked server %d as \"once\"", i );
442 			}
443 		}
444 	}
445 
446 	/* Initialize variables */
447 	line = 0;
448 	strcpy( section, "" );
449 	Init_Server_Struct( &New_Server );
450 	New_Server_Idx = NONE;
451 
452 	/* Read configuration file */
453 	while( true )
454 	{
455 		if( ! fgets( str, LINE_LEN, fd )) break;
456 		ngt_TrimStr( str );
457 		line++;
458 
459 		/* Skip comments and empty lines */
460 		if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
461 
462 		/* Is this the beginning of a new section? */
463 		if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' ))
464 		{
465 			strlcpy( section, str, sizeof( section ));
466 			if( strcasecmp( section, "[GLOBAL]" ) == 0 ) continue;
467 			if( strcasecmp( section, "[OPERATOR]" ) == 0 )
468 			{
469 				if( Conf_Oper_Count + 1 > MAX_OPERATORS ) Config_Error( LOG_ERR, "Too many operators configured." );
470 				else
471 				{
472 					/* Initialize new operator structure */
473 					Conf_Oper[Conf_Oper_Count].name[0] = '\0';
474 					Conf_Oper[Conf_Oper_Count].pwd[0] = '\0';
475 					if (Conf_Oper[Conf_Oper_Count].mask) {
476 						free(Conf_Oper[Conf_Oper_Count].mask );
477 						Conf_Oper[Conf_Oper_Count].mask = NULL;
478 					}
479 					Conf_Oper_Count++;
480 				}
481 				continue;
482 			}
483 			if( strcasecmp( section, "[SERVER]" ) == 0 )
484 			{
485 				/* Check if there is already a server to add */
486 				if( New_Server.name[0] )
487 				{
488 					/* Copy data to "real" server structure */
489 					assert( New_Server_Idx > NONE );
490 					Conf_Server[New_Server_Idx] = New_Server;
491 				}
492 
493 				/* Re-init structure for new server */
494 				Init_Server_Struct( &New_Server );
495 
496 				/* Search unused item in server configuration structure */
497 				for( i = 0; i < MAX_SERVERS; i++ )
498 				{
499 					/* Is this item used? */
500 					if( ! Conf_Server[i].name[0] ) break;
501 				}
502 				if( i >= MAX_SERVERS )
503 				{
504 					/* Oops, no free item found! */
505 					Config_Error( LOG_ERR, "Too many servers configured." );
506 					New_Server_Idx = NONE;
507 				}
508 				else New_Server_Idx = i;
509 				continue;
510 			}
511 			if( strcasecmp( section, "[CHANNEL]" ) == 0 )
512 			{
513 				if( Conf_Channel_Count + 1 > MAX_DEFCHANNELS ) Config_Error( LOG_ERR, "Too many pre-defined channels configured." );
514 				else
515 				{
516 					/* Initialize new channel structure */
517 					strcpy( Conf_Channel[Conf_Channel_Count].name, "" );
518 					strcpy( Conf_Channel[Conf_Channel_Count].modes, "" );
519 					strcpy( Conf_Channel[Conf_Channel_Count].topic, "" );
520 					Conf_Channel_Count++;
521 				}
522 				continue;
523 			}
524 			Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
525 			section[0] = 0x1;
526 		}
527 		if( section[0] == 0x1 ) continue;
528 
529 		/* Split line into variable name and parameters */
530 		ptr = strchr( str, '=' );
531 		if( ! ptr )
532 		{
533 			Config_Error( LOG_ERR, "%s, line %d: Syntax error!", NGIRCd_ConfFile, line );
534 			continue;
535 		}
536 		*ptr = '\0';
537 		var = str; ngt_TrimStr( var );
538 		arg = ptr + 1; ngt_TrimStr( arg );
539 
540 		if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
541 		else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
542 		else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
543 		else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
544 		else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
545 	}
546 
547 	/* Close configuration file */
548 	fclose( fd );
549 
550 	/* Check if there is still a server to add */
551 	if( New_Server.name[0] )
552 	{
553 		/* Copy data to "real" server structure */
554 		assert( New_Server_Idx > NONE );
555 		Conf_Server[New_Server_Idx] = New_Server;
556 	}
557 	
558 	/* If there are no ports configured use the default: 6667 */
559 	if( Conf_ListenPorts_Count < 1 )
560 	{
561 		Conf_ListenPorts_Count = 1;
562 		Conf_ListenPorts[0] = 6667;
563 	}
564 } /* Read_Config */
565 
566 
567 LOCAL bool
568 Check_ArgIsTrue( const char *Arg )
569 {
570 	if( strcasecmp( Arg, "yes" ) == 0 ) return true;
571 	if( strcasecmp( Arg, "true" ) == 0 ) return true;
572 	if( atoi( Arg ) != 0 ) return true;
573 
574 	return false;
575 } /* Check_ArgIsTrue */
576 
577 
578 LOCAL void
579 Handle_GLOBAL( int Line, char *Var, char *Arg )
580 {
581 	struct passwd *pwd;
582 	struct group *grp;
583 	char *ptr;
584 	long port;
585 	
586 	assert( Line > 0 );
587 	assert( Var != NULL );
588 	assert( Arg != NULL );
589 	
590 	if( strcasecmp( Var, "Name" ) == 0 )
591 	{
592 		/* Server name */
593 		if( strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName )) >= sizeof( Conf_ServerName ))
594 			Config_Error_TooLong( Line, Var );
595 
596 		return;
597 	}
598 	if( strcasecmp( Var, "Info" ) == 0 )
599 	{
600 		/* Info text of server */
601 		if( strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo )) >= sizeof( Conf_ServerInfo ))
602 			Config_Error_TooLong ( Line, Var );
603 
604 		return;
605 	}
606 	if( strcasecmp( Var, "Password" ) == 0 )
607 	{
608 		/* Global server password */
609 		if( strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd )) >= sizeof( Conf_ServerPwd ))
610 			Config_Error_TooLong( Line, Var );
611 
612 		return;
613 	}
614 	if( strcasecmp( Var, "AdminInfo1" ) == 0 )
615 	{
616 		/* Administrative info #1 */
617 		if( strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 )) >= sizeof( Conf_ServerAdmin1 )) Config_Error_TooLong ( Line, Var );
618 		return;
619 	}
620 	if( strcasecmp( Var, "AdminInfo2" ) == 0 )
621 	{
622 		/* Administrative info #2 */
623 		if( strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 )) >= sizeof( Conf_ServerAdmin2 )) Config_Error_TooLong ( Line, Var );
624 		return;
625 	}
626 	if( strcasecmp( Var, "AdminEMail" ) == 0 )
627 	{
628 		/* Administrative email contact */
629 		if( strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail )) >= sizeof( Conf_ServerAdminMail )) Config_Error_TooLong( Line, Var );
630 		return;
631 	}
632 	if( strcasecmp( Var, "Ports" ) == 0 )
633 	{
634 		/* Ports on that the server should listen. More port numbers
635 		 * must be separated by "," */
636 		ptr = strtok( Arg, "," );
637 		while( ptr )
638 		{
639 			ngt_TrimStr( ptr );
640 			port = atol( ptr );
641 			if( Conf_ListenPorts_Count + 1 > MAX_LISTEN_PORTS ) Config_Error( LOG_ERR, "Too many listen ports configured. Port %ld ignored.", port );
642 			else
643 			{
644 				if( port > 0 && port < 0xFFFF ) Conf_ListenPorts[Conf_ListenPorts_Count++] = (UINT16)port;
645 				else Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Illegal port number %ld!", NGIRCd_ConfFile, Line, port );
646 			}
647 			ptr = strtok( NULL, "," );
648 		}
649 		return;
650 	}
651 	if( strcasecmp( Var, "MotdFile" ) == 0 )
652 	{
653 		/* "Message of the day" (MOTD) file */
654 		if( strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile )) >= sizeof( Conf_MotdFile ))
655 			Config_Error_TooLong( Line, Var );
656 
657 		return;
658 	}
659 	if( strcasecmp( Var, "MotdPhrase" ) == 0 )
660 	{
661 		/* "Message of the day" phrase (instead of file) */
662 		if( strlcpy( Conf_MotdPhrase, Arg, sizeof( Conf_MotdPhrase )) >= sizeof( Conf_MotdPhrase ))
663 			Config_Error_TooLong( Line, Var );
664 
665 		return;
666 	}
667 	if( strcasecmp( Var, "ChrootDir" ) == 0 )
668 	{
669 		/* directory for chroot() */
670 		if( strlcpy( Conf_Chroot, Arg, sizeof( Conf_Chroot )) >= sizeof( Conf_Chroot ))
671 			Config_Error_TooLong( Line, Var );
672 
673 		return;
674 	}
675 
676 	if ( strcasecmp( Var, "PidFile" ) == 0 )
677 	{
678 		/* name of pidfile */
679 		if( strlcpy( Conf_PidFile, Arg, sizeof( Conf_PidFile )) >= sizeof( Conf_PidFile ))
680 			Config_Error_TooLong( Line, Var );
681 
682 		return;
683 	}
684 
685 	if( strcasecmp( Var, "ServerUID" ) == 0 )
686 	{
687 		/* UID the daemon should switch to */
688 		pwd = getpwnam( Arg );
689 		if( pwd ) Conf_UID = pwd->pw_uid;
690 		else
691 		{
692 #ifdef HAVE_ISDIGIT
693 			if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
694 			else
695 #endif
696 			Conf_UID = (unsigned int)atoi( Arg );
697 		}
698 		return;
699 	}
700 	if( strcasecmp( Var, "ServerGID" ) == 0 )
701 	{
702 		/* GID the daemon should use */
703 		grp = getgrnam( Arg );
704 		if( grp ) Conf_GID = grp->gr_gid;
705 		else
706 		{
707 #ifdef HAVE_ISDIGIT
708 			if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
709 			else
710 #endif
711 			Conf_GID = (unsigned int)atoi( Arg );
712 		}
713 		return;
714 	}
715 	if( strcasecmp( Var, "PingTimeout" ) == 0 )
716 	{
717 		/* PING timeout */
718 		Conf_PingTimeout = atoi( Arg );
719 		if( Conf_PingTimeout < 5 )
720 		{
721 			Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!", NGIRCd_ConfFile, Line );
722 			Conf_PingTimeout = 5;
723 		}
724 		return;
725 	}
726 	if( strcasecmp( Var, "PongTimeout" ) == 0 )
727 	{
728 		/* PONG timeout */
729 		Conf_PongTimeout = atoi( Arg );
730 		if( Conf_PongTimeout < 5 )
731 		{
732 			Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!", NGIRCd_ConfFile, Line );
733 			Conf_PongTimeout = 5;
734 		}
735 		return;
736 	}
737 	if( strcasecmp( Var, "ConnectRetry" ) == 0 )
738 	{
739 		/* Seconds between connection attempts to other servers */
740 		Conf_ConnectRetry = atoi( Arg );
741 		if( Conf_ConnectRetry < 5 )
742 		{
743 			Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!", NGIRCd_ConfFile, Line );
744 			Conf_ConnectRetry = 5;
745 		}
746 		return;
747 	}
748 	if( strcasecmp( Var, "OperCanUseMode" ) == 0 )
749 	{
750 		/* Are IRC operators allowed to use MODE in channels they aren't Op in? */
751 		Conf_OperCanMode = Check_ArgIsTrue( Arg );
752 		return;
753 	}
754 	if( strcasecmp( Var, "OperServerMode" ) == 0 )
755 	{
756 		/* Mask IRC operator as if coming from the server? (ircd-irc2 compat hack) */
757 		Conf_OperServerMode = Check_ArgIsTrue( Arg );
758 		return;
759 	}
760 	if( strcasecmp( Var, "MaxConnections" ) == 0 )
761 	{
762 		/* Maximum number of connections. Values <= 0 are equal to "no limit". */
763 #ifdef HAVE_ISDIGIT
764 		if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var);
765 		else
766 #endif
767 		Conf_MaxConnections = atol( Arg );
768 		return;
769 	}
770 	if( strcasecmp( Var, "MaxConnectionsIP" ) == 0 )
771 	{
772 		/* Maximum number of simoultanous connections from one IP. Values <= 0 are equal to "no limit". */
773 #ifdef HAVE_ISDIGIT
774 		if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
775 		else
776 #endif
777 		Conf_MaxConnectionsIP = atoi( Arg );
778 		return;
779 	}
780 	if( strcasecmp( Var, "MaxJoins" ) == 0 )
781 	{
782 		/* Maximum number of channels a user can join. Values <= 0 are equal to "no limit". */
783 #ifdef HAVE_ISDIGIT
784 		if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
785 		else
786 #endif
787 		Conf_MaxJoins = atoi( Arg );
788 		return;
789 	}
790 	if( strcasecmp( Var, "Listen" ) == 0 )
791 	{
792 		/* IP-Address to bind sockets */
793 		if( strlcpy( Conf_ListenAddress, Arg, sizeof( Conf_ListenAddress )) >= sizeof( Conf_ListenAddress ))
794 		{
795 			Config_Error_TooLong( Line, Var );
796 		}
797 		return;
798 	}
799 
800 	Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
801 } /* Handle_GLOBAL */
802 
803 
804 LOCAL void
805 Handle_OPERATOR( int Line, char *Var, char *Arg )
806 {
807 	assert( Line > 0 );
808 	assert( Var != NULL );
809 	assert( Arg != NULL );
810 	assert( Conf_Oper_Count > 0 );
811 
812 	if( strcasecmp( Var, "Name" ) == 0 )
813 	{
814 		/* Name of IRC operator */
815 		if( strlcpy( Conf_Oper[Conf_Oper_Count - 1].name, Arg, sizeof( Conf_Oper[Conf_Oper_Count - 1].name )) >= sizeof( Conf_Oper[Conf_Oper_Count - 1].name )) Config_Error_TooLong( Line, Var );
816 		return;
817 	}
818 	if( strcasecmp( Var, "Password" ) == 0 )
819 	{
820 		/* Password of IRC operator */
821 		if( strlcpy( Conf_Oper[Conf_Oper_Count - 1].pwd, Arg, sizeof( Conf_Oper[Conf_Oper_Count - 1].pwd )) >= sizeof( Conf_Oper[Conf_Oper_Count - 1].pwd )) Config_Error_TooLong( Line, Var );
822 		return;
823 	}
824 	if( strcasecmp( Var, "Mask" ) == 0 )
825 	{
826 		if (Conf_Oper[Conf_Oper_Count - 1].mask) return; /* Hostname already configured */
827 		Conf_Oper[Conf_Oper_Count - 1].mask = strdup( Arg );
828 		if (! Conf_Oper[Conf_Oper_Count - 1].mask) {
829 			Config_Error( LOG_ERR, "%s, line %d: Cannot allocate memory for operator mask: %s", NGIRCd_ConfFile, Line, strerror(errno) );
830 			return;
831 		}
832 
833 		return;
834 	}
835 	Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
836 } /* Handle_OPERATOR */
837 
838 
839 LOCAL void
840 Handle_SERVER( int Line, char *Var, char *Arg )
841 {
842 	long port;
843 	
844 	assert( Line > 0 );
845 	assert( Var != NULL );
846 	assert( Arg != NULL );
847 
848 	/* Ignore server block if no space is left in server configuration structure */
849 	if( New_Server_Idx <= NONE ) return;
850 
851 	if( strcasecmp( Var, "Host" ) == 0 )
852 	{
853 		/* Hostname of the server */
854 		if( strlcpy( New_Server.host, Arg, sizeof( New_Server.host )) >= sizeof( New_Server.host ))
855 			Config_Error_TooLong ( Line, Var );
856 
857 		return;
858 	}
859 	if( strcasecmp( Var, "Name" ) == 0 )
860 	{
861 		/* Name of the server ("Nick"/"ID") */
862 		if( strlcpy( New_Server.name, Arg, sizeof( New_Server.name )) >= sizeof( New_Server.name ))
863 			Config_Error_TooLong( Line, Var );
864 		return;
865 	}
866 	if( strcasecmp( Var, "MyPassword" ) == 0 )
867 	{
868 		/* Password of this server which is sent to the peer */
869 		if( strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in )) >= sizeof( New_Server.pwd_in )) Config_Error_TooLong( Line, Var );
870 		return;
871 	}
872 	if( strcasecmp( Var, "PeerPassword" ) == 0 )
873 	{
874 		/* Passwort of the peer which must be received */
875 		if( strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out )) >= sizeof( New_Server.pwd_out )) Config_Error_TooLong( Line, Var );
876 		return;
877 	}
878 	if( strcasecmp( Var, "Port" ) == 0 )
879 	{
880 		/* Port to which this server should connect */
881 		port = atol( Arg );
882 		if( port > 0 && port < 0xFFFF ) New_Server.port = (UINT16)port;
883 		else Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!", NGIRCd_ConfFile, Line, port );
884 		return;
885 	}
886 	if( strcasecmp( Var, "Group" ) == 0 )
887 	{
888 		/* Server group */
889 #ifdef HAVE_ISDIGIT
890 		if( ! isdigit( (int)*Arg )) Config_Error_NaN( Line, Var );
891 		else
892 #endif
893 		New_Server.group = atoi( Arg );
894 		return;
895 	}
896 	
897 	Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
898 } /* Handle_SERVER */
899 
900 
901 LOCAL void
902 Handle_CHANNEL( int Line, char *Var, char *Arg )
903 {
904 	assert( Line > 0 );
905 	assert( Var != NULL );
906 	assert( Arg != NULL );
907 
908 	if( strcasecmp( Var, "Name" ) == 0 )
909 	{
910 		/* Name of the channel */
911 		if( strlcpy( Conf_Channel[Conf_Channel_Count - 1].name, Arg, sizeof( Conf_Channel[Conf_Channel_Count - 1].name )) >= sizeof( Conf_Channel[Conf_Channel_Count - 1].name ))
912 			Config_Error_TooLong( Line, Var );
913 		return;
914 	}
915 	if( strcasecmp( Var, "Modes" ) == 0 )
916 	{
917 		/* Initial modes */
918 		if( strlcpy( Conf_Channel[Conf_Channel_Count - 1].modes, Arg, sizeof( Conf_Channel[Conf_Channel_Count - 1].modes )) >= sizeof( Conf_Channel[Conf_Channel_Count - 1].modes ))
919 			Config_Error_TooLong( Line, Var );
920 		return;
921 	}
922 	if( strcasecmp( Var, "Topic" ) == 0 )
923 	{
924 		/* Initial topic */
925 		if( strlcpy( Conf_Channel[Conf_Channel_Count - 1].topic, Arg, sizeof( Conf_Channel[Conf_Channel_Count - 1].topic )) >= sizeof( Conf_Channel[Conf_Channel_Count - 1].topic ))
926 			Config_Error_TooLong( Line, Var );
927  
928 		return;
929 	}
930 
931 	Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
932 } /* Handle_CHANNEL */
933 
934 
935 LOCAL void
936 Validate_Config( bool Configtest )
937 {
938 	/* Validate configuration settings. */
939 
940 #ifdef DEBUG
941 	int i, servers, servers_once;
942 #endif
943 
944 	if( ! Conf_ServerName[0] )
945 	{
946 		/* No server name configured! */
947 		Config_Error( LOG_ALERT, "No server name configured in \"%s\" (section 'Global': 'Name')!", NGIRCd_ConfFile );
948 		if( ! Configtest )
949 		{
950 			Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
951 			exit( 1 );
952 		}
953 	}
954 	
955 	if( Conf_ServerName[0] && ! strchr( Conf_ServerName, '.' ))
956 	{
957 		/* No dot in server name! */
958 		Config_Error( LOG_ALERT, "Invalid server name configured in \"%s\" (section 'Global': 'Name'): Dot missing!", NGIRCd_ConfFile );
959 		if( ! Configtest )
960 		{
961 			Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
962 			exit( 1 );
963 		}
964 	}
965 
966 #ifdef STRICT_RFC
967 	if( ! Conf_ServerAdminMail[0] )
968 	{
969 		/* No administrative contact configured! */
970 		Config_Error( LOG_ALERT, "No administrator email address configured in \"%s\" ('AdminEMail')!", NGIRCd_ConfFile );
971 		if( ! Configtest )
972 		{
973 			Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
974 			exit( 1 );
975 		}
976 	}
977 #endif
978 
979 	if( ! Conf_ServerAdmin1[0] && ! Conf_ServerAdmin2[0] && ! Conf_ServerAdminMail[0] )
980 	{
981 		/* No administrative information configured! */
982 		Config_Error( LOG_WARNING, "No administrative information configured but required by RFC!" );
983 	}
984 #ifdef FD_SETSIZE	
985 	if(( Conf_MaxConnections > (long)FD_SETSIZE ) || ( Conf_MaxConnections < 1 ))
986 	{
987 		Conf_MaxConnections = (long)FD_SETSIZE;
988 		Config_Error( LOG_ERR, "Setting MaxConnections to %ld, select() can't handle more file descriptors!", Conf_MaxConnections );
989 	}
990 #else
991 	Config_Error( LOG_WARN, "Don't know how many file descriptors select() can handle on this system, don't set MaxConnections too high!" );
992 #endif
993 
994 #ifdef DEBUG
995 	servers = servers_once = 0;
996 	for( i = 0; i < MAX_SERVERS; i++ )
997 	{
998 		if( Conf_Server[i].name[0] )
999 		{
1000 			servers++;
1001 			if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) servers_once++;
1002 		}
1003 	}
1004 	Log( LOG_DEBUG, "Configuration: Operators=%d, Servers=%d[%d], Channels=%d", Conf_Oper_Count, servers, servers_once, Conf_Channel_Count );
1005 #endif
1006 } /* Validate_Config */
1007 
1008 
1009 LOCAL void
1010 Config_Error_TooLong ( const int Line, const char *Item )
1011 {
1012 	Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" too long!", NGIRCd_ConfFile, Line, Item );
1013 }
1014 
1015 LOCAL void
1016 Config_Error_NaN( const int Line, const char *Item )
1017 {
1018 	Config_Error( LOG_WARNING, "%s, line %d: Value of \"%s\" is not a number!", NGIRCd_ConfFile, Line, Item );
1019 }
1020 
1021 #ifdef PROTOTYPES
1022 LOCAL void Config_Error( const int Level, const char *Format, ... )
1023 #else
1024 LOCAL void Config_Error( Level, Format, va_alist )
1025 const int Level;
1026 const char *Format;
1027 va_dcl
1028 #endif
1029 {
1030 	/* Error! Write to console and/or logfile. */
1031 
1032 	char msg[MAX_LOG_MSG_LEN];
1033 	va_list ap;
1034 
1035 	assert( Format != NULL );
1036 
1037 #ifdef PROTOTYPES
1038 	va_start( ap, Format );
1039 #else
1040 	va_start( ap );
1041 #endif
1042 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
1043 	va_end( ap );
1044 	
1045 	/* During "normal operations" the log functions of the daemon should
1046 	 * be used, but during testing of the configuration file, all messages
1047 	 * should go directly to the console: */
1048 	if( Use_Log ) Log( Level, "%s", msg );
1049 	else puts( msg );
1050 } /* Config_Error */
1051 
1052 
1053 LOCAL void
1054 Init_Server_Struct( CONF_SERVER *Server )
1055 {
1056 	/* Initialize server configuration structur to default values */
1057 
1058 	assert( Server != NULL );
1059 
1060 	memset( Server, 0, sizeof (CONF_SERVER) );
1061 
1062 	Server->group = NONE;
1063 	Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
1064 
1065 	if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
1066 
1067 	Server->conn_id = NONE;
1068 } /* Init_Server_Struct */
1069 
1070 
1071 /* -eof- */