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Date:: Tue Dec 31 16:12:50 2002 UTC
Message:: - New functions Conf_EnableServer(), Conf_DisableServer() and Conf_AddServer(). - Changed "once"-server-config-flag into a generic flag.
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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 1.53 2002/12/31 16:12:50 alex Exp $";
18 
19 #include "imp.h"
20 #include <assert.h>
21 #include <errno.h>
22 #include <stdarg.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <unistd.h>
27 #include <pwd.h>
28 #include <grp.h>
29 #include <sys/types.h>
30 #include <unistd.h>
31 
32 #ifdef HAVE_CTYPE_H
33 # include <ctype.h>
34 #endif
35 
36 #include "ngircd.h"
37 #include "conn.h"
38 #include "client.h"
39 #include "defines.h"
40 #include "log.h"
41 #include "resolve.h"
42 #include "tool.h"
43 
44 #include "exp.h"
45 #include "conf.h"
46 
47 
48 LOCAL BOOLEAN Use_Log = TRUE;
49 LOCAL CONF_SERVER New_Server;
50 LOCAL INT New_Server_Idx;
51 
52 
53 LOCAL VOID Set_Defaults PARAMS(( BOOLEAN InitServers ));
54 LOCAL VOID Read_Config PARAMS(( VOID ));
55 LOCAL VOID Validate_Config PARAMS(( BOOLEAN TestOnly ));
56 
57 LOCAL VOID Handle_GLOBAL PARAMS(( INT Line, CHAR *Var, CHAR *Arg ));
58 LOCAL VOID Handle_OPERATOR PARAMS(( INT Line, CHAR *Var, CHAR *Arg ));
59 LOCAL VOID Handle_SERVER PARAMS(( INT Line, CHAR *Var, CHAR *Arg ));
60 LOCAL VOID Handle_CHANNEL PARAMS(( INT Line, CHAR *Var, CHAR *Arg ));
61 
62 LOCAL VOID Config_Error PARAMS(( CONST INT Level, CONST CHAR *Format, ... ));
63 
64 LOCAL VOID Init_Server_Struct PARAMS(( CONF_SERVER *Server ));
65 
66 
67 GLOBAL VOID
68 Conf_Init( VOID )
69 {
70 	Set_Defaults( TRUE );
71 	Read_Config( );
72 	Validate_Config( FALSE );
73 } /* Config_Init */
74 
75 
76 GLOBAL VOID
77 Conf_Rehash( VOID )
78 {
79 	Set_Defaults( FALSE );
80 	Read_Config( );
81 	Validate_Config( FALSE );
82 } /* Config_Rehash */
83 
84 
85 GLOBAL INT
86 Conf_Test( VOID )
87 {
88 	/* Read configuration, validate and output it. */
89 
90 	struct passwd *pwd;
91 	struct group *grp;
92 	INT i;
93 
94 	Use_Log = FALSE;
95 	Set_Defaults( TRUE );
96 
97 	Read_Config( );
98 	Validate_Config( TRUE );
99 
100 	/* If stdin is a valid tty wait for a key: */
101 	if( isatty( fileno( stdout )))
102 	{
103 		puts( "OK, press enter to see a dump of your service configuration ..." );
104 		getchar( );
105 	}
106 	else puts( "Ok, dump of your server configuration follows:\n" );
107 
108 	puts( "[GLOBAL]" );
109 	printf( "  ServerName = %s\n", Conf_ServerName );
110 	printf( "  ServerInfo = %s\n", Conf_ServerInfo );
111 	printf( "  ServerPwd = %s\n", Conf_ServerPwd );
112 	printf( "  AdminInfo1 = %s\n", Conf_ServerAdmin1 );
113 	printf( "  AdminInfo2 = %s\n", Conf_ServerAdmin2 );
114 	printf( "  AdminEMail = %s\n", Conf_ServerAdminMail );
115 	printf( "  MotdFile = %s\n", Conf_MotdFile );
116 	printf( "  Ports = " );
117 	for( i = 0; i < Conf_ListenPorts_Count; i++ )
118 	{
119 		if( i != 0 ) printf( ", " );
120 		printf( "%u", Conf_ListenPorts[i] );
121 	}
122 	puts( "" );
123 	pwd = getpwuid( Conf_UID );
124 	if( pwd ) printf( "  ServerUID = %s\n", pwd->pw_name );
125 	else printf( "  ServerUID = %ld\n", (LONG)Conf_UID );
126 	grp = getgrgid( Conf_GID );
127 	if( grp ) printf( "  ServerGID = %s\n", grp->gr_name );
128 	else printf( "  ServerGID = %ld\n", (LONG)Conf_GID );
129 	printf( "  PingTimeout = %d\n", Conf_PingTimeout );
130 	printf( "  PongTimeout = %d\n", Conf_PongTimeout );
131 	printf( "  ConnectRetry = %d\n", Conf_ConnectRetry );
132 	printf( "  OperCanUseMode = %s\n", Conf_OperCanMode == TRUE ? "yes" : "no" );
133 	if( Conf_MaxConnections > 0 ) printf( "  MaxConnections = %ld\n", Conf_MaxConnections );
134 	else printf( "  MaxConnections = -1\n" );
135 	if( Conf_MaxJoins > 0 ) printf( "  MaxJoins = %d\n", Conf_MaxJoins );
136 	else printf( "  MaxJoins = -1\n" );
137 	puts( "" );
138 
139 	for( i = 0; i < Conf_Oper_Count; i++ )
140 	{
141 		if( ! Conf_Oper[i].name[0] ) continue;
142 		
143 		/* Valid "Operator" section */
144 		puts( "[OPERATOR]" );
145 		printf( "  Name = %s\n", Conf_Oper[i].name );
146 		printf( "  Password = %s\n", Conf_Oper[i].pwd );
147 		puts( "" );
148 	}
149 
150 	for( i = 0; i < MAX_SERVERS; i++ )
151 	{
152 		if( ! Conf_Server[i].name[0] ) continue;
153 		
154 		/* Valid "Server" section */
155 		puts( "[SERVER]" );
156 		printf( "  Name = %s\n", Conf_Server[i].name );
157 		printf( "  Host = %s\n", Conf_Server[i].host );
158 		printf( "  Port = %d\n", Conf_Server[i].port );
159 		printf( "  MyPassword = %s\n", Conf_Server[i].pwd_in );
160 		printf( "  PeerPassword = %s\n", Conf_Server[i].pwd_out );
161 		printf( "  Group = %d\n", Conf_Server[i].group );
162 		puts( "" );
163 	}
164 
165 	for( i = 0; i < Conf_Channel_Count; i++ )
166 	{
167 		if( ! Conf_Channel[i].name[0] ) continue;
168 		
169 		/* Valid "Channel" section */
170 		puts( "[CHANNEL]" );
171 		printf( "  Name = %s\n", Conf_Channel[i].name );
172 		printf( "  Modes = %s\n", Conf_Channel[i].modes );
173 		printf( "  Topic = %s\n", Conf_Channel[i].topic );
174 		puts( "" );
175 	}
176 	
177 	return 0;
178 } /* Conf_Test */
179 
180 
181 GLOBAL VOID
182 Conf_UnsetServer( CONN_ID Idx )
183 {
184 	/* Set next time for next connection attempt, if this is a server
185 	 * link that is (still) configured here. If the server is set as
186 	 * "once", delete it from our configuration.
187 	 * Non-Server-Connections will be silently ignored. */
188 
189 	INT i;
190 
191 	/* Check all our configured servers */
192 	for( i = 0; i < MAX_SERVERS; i++ )
193 	{
194 		if( Conf_Server[i].conn_id != Idx ) continue;
195 
196 		/* Gotcha! Mark server configuration as "unused": */
197 		Conf_Server[i].conn_id = NONE;
198 
199 		if( Conf_Server[i].flags & CONF_SFLAG_ONCE )
200 		{
201 			/* Delete configuration here */
202 			Init_Server_Struct( &Conf_Server[i] );
203 		}
204 		else
205 		{
206 			/* Set time for next connect attempt */
207 			if( Conf_Server[i].lasttry <  time( NULL ) - Conf_ConnectRetry )
208 			{
209 				/* Okay, the connection was established "long enough": */
210 				Conf_Server[i].lasttry = time( NULL ) - Conf_ConnectRetry + RECONNECT_DELAY;
211 			}
212 		}
213 		break;
214 	}
215 } /* Conf_UnsetServer */
216 
217 
218 GLOBAL VOID
219 Conf_SetServer( INT ConfServer, CONN_ID Idx )
220 {
221 	/* Set connection for specified configured server */
222 
223 	assert( ConfServer > NONE );
224 	assert( Idx > NONE );
225 
226 	Conf_Server[ConfServer].conn_id = Idx;
227 } /* Conf_SetServer */
228 
229 
230 GLOBAL INT
231 Conf_GetServer( CONN_ID Idx )
232 {
233 	/* Get index of server in configuration structure */
234 
235 	INT i;
236 
237 	assert( Idx > NONE );
238 
239 	for( i = 0; i < MAX_SERVERS; i++ )
240 	{
241 		if( Conf_Server[i].conn_id == Idx ) return i;
242 	}
243 	return NONE;
244 } /* Conf_GetServer */
245 
246 
247 GLOBAL BOOLEAN
248 Conf_EnableServer( CHAR *Name, INT Port )
249 {
250 	/* Enable specified server and adjust port */
251 
252 	INT i;
253 
254 	assert( Name != NULL );
255 
256 	for( i = 0; i < MAX_SERVERS; i++ )
257 	{
258 		if( strcasecmp( Conf_Server[i].name, Name ) == 0 )
259 		{
260 			/* Gotcha! Set port and enable server: */
261 			Conf_Server[i].port = Port;
262 			Conf_Server[i].flags &= ~CONF_SFLAG_DISABLED;
263 			return TRUE;
264 		}
265 	}
266 	return FALSE;
267 } /* Conf_EnableServer */
268 
269 
270 GLOBAL BOOLEAN
271 Conf_DisableServer( CHAR *Name )
272 {
273 	/* Enable specified server and adjust port */
274 
275 	INT i;
276 
277 	assert( Name != NULL );
278 
279 	for( i = 0; i < MAX_SERVERS; i++ )
280 	{
281 		if( strcasecmp( Conf_Server[i].name, Name ) == 0 )
282 		{
283 			/* Gotcha! Disable and disconnect server: */
284 			Conf_Server[i].flags |= CONF_SFLAG_DISABLED;
285 			if( Conf_Server[i].conn_id > NONE ) Conn_Close( Conf_Server[i].conn_id, NULL, "Server link terminated on operator request", TRUE );
286 			return TRUE;
287 		}
288 	}
289 	return FALSE;
290 } /* Conf_DisableServer */
291 
292 
293 GLOBAL BOOLEAN
294 Conf_AddServer( CHAR *Name, INT Port, CHAR *Host, CHAR *MyPwd, CHAR *PeerPwd )
295 {
296 	/* Add new server to configuration */
297 
298 	INT i;
299 
300 	assert( Name != NULL );
301 	assert( Host != NULL );
302 	assert( MyPwd != NULL );
303 	assert( PeerPwd != NULL );
304 
305 	/* Search unused item in server configuration structure */
306 	for( i = 0; i < MAX_SERVERS; i++ )
307 	{
308 		/* Is this item used? */
309 		if( ! Conf_Server[i].name[0] ) break;
310 	}
311 	if( i >= MAX_SERVERS ) return FALSE;
312 
313 	Init_Server_Struct( &Conf_Server[i] );
314 	strlcpy( Conf_Server[i].name, Name, sizeof( Conf_Server[i].name ));
315 	strlcpy( Conf_Server[i].host, Host, sizeof( Conf_Server[i].host ));
316 	strlcpy( Conf_Server[i].pwd_out, MyPwd, sizeof( Conf_Server[i].pwd_out ));
317 	strlcpy( Conf_Server[i].pwd_in, PeerPwd, sizeof( Conf_Server[i].pwd_in ));
318 	Conf_Server[i].port = Port;
319 	Conf_Server[i].flags = CONF_SFLAG_ONCE;
320 	
321 	return TRUE;
322 } /* Conf_AddServer */
323 
324 
325 LOCAL VOID
326 Set_Defaults( BOOLEAN InitServers )
327 {
328 	/* Initialize configuration variables with default values. */
329 
330 	INT i;
331 
332 	strcpy( Conf_ServerName, "" );
333 	sprintf( Conf_ServerInfo, "%s %s", PACKAGE, VERSION );
334 	strcpy( Conf_ServerPwd, "" );
335 
336 	strcpy( Conf_ServerAdmin1, "" );
337 	strcpy( Conf_ServerAdmin2, "" );
338 	strcpy( Conf_ServerAdminMail, "" );
339 
340 	strlcpy( Conf_MotdFile, SYSCONFDIR, sizeof( Conf_MotdFile ));
341 	strlcat( Conf_MotdFile, MOTD_FILE, sizeof( Conf_MotdFile ));
342 
343 	Conf_ListenPorts_Count = 0;
344 
345 	Conf_UID = Conf_GID = 0;
346 	
347 	Conf_PingTimeout = 120;
348 	Conf_PongTimeout = 20;
349 
350 	Conf_ConnectRetry = 60;
351 
352 	Conf_Oper_Count = 0;
353 	Conf_Channel_Count = 0;
354 
355 	Conf_OperCanMode = FALSE;
356 	
357 	Conf_MaxConnections = -1;
358 	Conf_MaxJoins = 10;
359 
360 	/* Initialize server configuration structures */
361 	if( InitServers ) for( i = 0; i < MAX_SERVERS; Init_Server_Struct( &Conf_Server[i++] ));
362 } /* Set_Defaults */
363 
364 
365 LOCAL VOID
366 Read_Config( VOID )
367 {
368 	/* Read configuration file. */
369 
370 	CHAR section[LINE_LEN], str[LINE_LEN], *var, *arg, *ptr;
371 	INT line, i;
372 	FILE *fd;
373 
374 	/* Open configuration file */
375 	fd = fopen( NGIRCd_ConfFile, "r" );
376 	if( ! fd )
377 	{
378 		/* No configuration file found! */
379 		Config_Error( LOG_ALERT, "Can't read configuration \"%s\": %s", NGIRCd_ConfFile, strerror( errno ));
380 		Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
381 		exit( 1 );
382 	}
383 
384 	Config_Error( LOG_INFO, "Reading configuration from \"%s\" ...", NGIRCd_ConfFile );
385 
386 	/* Clean up server configuration structure: mark all already
387 	 * configured servers as "once" so that they are deleted
388 	 * after the next disconnect and delete all unused servers. */
389 	for( i = 0; i < MAX_SERVERS; i++ )
390 	{
391 		if( Conf_Server[i].conn_id == NONE ) Init_Server_Struct( &Conf_Server[i] );
392 		else Conf_Server[i].flags |= CONF_SFLAG_ONCE;
393 	}
394 
395 	/* Initialize variables */
396 	line = 0;
397 	strcpy( section, "" );
398 	Init_Server_Struct( &New_Server );
399 	New_Server_Idx = NONE;
400 
401 	/* Read configuration file */
402 	while( TRUE )
403 	{
404 		if( ! fgets( str, LINE_LEN, fd )) break;
405 		ngt_TrimStr( str );
406 		line++;
407 
408 		/* Skip comments and empty lines */
409 		if( str[0] == ';' || str[0] == '#' || str[0] == '\0' ) continue;
410 
411 		/* Is this the beginning of a new section? */
412 		if(( str[0] == '[' ) && ( str[strlen( str ) - 1] == ']' ))
413 		{
414 			strlcpy( section, str, sizeof( section ));
415 			if( strcasecmp( section, "[GLOBAL]" ) == 0 ) continue;
416 			if( strcasecmp( section, "[OPERATOR]" ) == 0 )
417 			{
418 				if( Conf_Oper_Count + 1 > MAX_OPERATORS ) Config_Error( LOG_ERR, "Too many operators configured." );
419 				else
420 				{
421 					/* Initialize new operator structure */
422 					strcpy( Conf_Oper[Conf_Oper_Count].name, "" );
423 					strcpy( Conf_Oper[Conf_Oper_Count].pwd, "" );
424 					Conf_Oper_Count++;
425 				}
426 				continue;
427 			}
428 			if( strcasecmp( section, "[SERVER]" ) == 0 )
429 			{
430 				/* Check if there is already a server to add */
431 				if( New_Server.name[0] )
432 				{
433 					/* Copy data to "real" server structure */
434 					assert( New_Server_Idx > NONE );
435 					Conf_Server[New_Server_Idx] = New_Server;
436 				}
437 
438 				/* Re-init structure for new server */
439 				Init_Server_Struct( &New_Server );
440 
441 				/* Search unused item in server configuration structure */
442 				for( i = 0; i < MAX_SERVERS; i++ )
443 				{
444 					/* Is this item used? */
445 					if( ! Conf_Server[i].name[0] ) break;
446 				}
447 				if( i >= MAX_SERVERS )
448 				{
449 					/* Oops, no free item found! */
450 					Config_Error( LOG_ERR, "Too many servers configured." );
451 					New_Server_Idx = NONE;
452 				}
453 				else New_Server_Idx = i;
454 				continue;
455 			}
456 			if( strcasecmp( section, "[CHANNEL]" ) == 0 )
457 			{
458 				if( Conf_Channel_Count + 1 > MAX_DEFCHANNELS ) Config_Error( LOG_ERR, "Too many pre-defined channels configured." );
459 				else
460 				{
461 					/* Initialize new channel structure */
462 					strcpy( Conf_Channel[Conf_Channel_Count].name, "" );
463 					strcpy( Conf_Channel[Conf_Channel_Count].modes, "" );
464 					strcpy( Conf_Channel[Conf_Channel_Count].topic, "" );
465 					Conf_Channel_Count++;
466 				}
467 				continue;
468 			}
469 			Config_Error( LOG_ERR, "%s, line %d: Unknown section \"%s\"!", NGIRCd_ConfFile, line, section );
470 			section[0] = 0x1;
471 		}
472 		if( section[0] == 0x1 ) continue;
473 
474 		/* Split line into variable name and parameters */
475 		ptr = strchr( str, '=' );
476 		if( ! ptr )
477 		{
478 			Config_Error( LOG_ERR, "%s, line %d: Syntax error!", NGIRCd_ConfFile, line );
479 			continue;
480 		}
481 		*ptr = '\0';
482 		var = str; ngt_TrimStr( var );
483 		arg = ptr + 1; ngt_TrimStr( arg );
484 
485 		if( strcasecmp( section, "[GLOBAL]" ) == 0 ) Handle_GLOBAL( line, var, arg );
486 		else if( strcasecmp( section, "[OPERATOR]" ) == 0 ) Handle_OPERATOR( line, var, arg );
487 		else if( strcasecmp( section, "[SERVER]" ) == 0 ) Handle_SERVER( line, var, arg );
488 		else if( strcasecmp( section, "[CHANNEL]" ) == 0 ) Handle_CHANNEL( line, var, arg );
489 		else Config_Error( LOG_ERR, "%s, line %d: Variable \"%s\" outside section!", NGIRCd_ConfFile, line, var );
490 	}
491 
492 	/* Close configuration file */
493 	fclose( fd );
494 
495 	/* Check if there is still a server to add */
496 	if( New_Server.name[0] )
497 	{
498 		/* Copy data to "real" server structure */
499 		assert( New_Server_Idx > NONE );
500 		Conf_Server[New_Server_Idx] = New_Server;
501 	}
502 	
503 	/* If there are no ports configured use the default: 6667 */
504 	if( Conf_ListenPorts_Count < 1 )
505 	{
506 		Conf_ListenPorts_Count = 1;
507 		Conf_ListenPorts[0] = 6667;
508 	}
509 } /* Read_Config */
510 
511 
512 LOCAL VOID
513 Handle_GLOBAL( INT Line, CHAR *Var, CHAR *Arg )
514 {
515 	struct passwd *pwd;
516 	struct group *grp;
517 	CHAR *ptr;
518 	LONG port;
519 	
520 	assert( Line > 0 );
521 	assert( Var != NULL );
522 	assert( Arg != NULL );
523 	
524 	if( strcasecmp( Var, "Name" ) == 0 )
525 	{
526 		/* Server name */
527 		if( strlcpy( Conf_ServerName, Arg, sizeof( Conf_ServerName )) >= sizeof( Conf_ServerName )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Name\" too long!", NGIRCd_ConfFile, Line );
528 		return;
529 	}
530 	if( strcasecmp( Var, "Info" ) == 0 )
531 	{
532 		/* Info text of server */
533 		if( strlcpy( Conf_ServerInfo, Arg, sizeof( Conf_ServerInfo )) >= sizeof( Conf_ServerInfo )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Info\" too long!", NGIRCd_ConfFile, Line );
534 		return;
535 	}
536 	if( strcasecmp( Var, "Password" ) == 0 )
537 	{
538 		/* Global server password */
539 		if( strlcpy( Conf_ServerPwd, Arg, sizeof( Conf_ServerPwd )) >= sizeof( Conf_ServerPwd )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Password\" too long!", NGIRCd_ConfFile, Line );
540 		return;
541 	}
542 	if( strcasecmp( Var, "AdminInfo1" ) == 0 )
543 	{
544 		/* Administrative info #1 */
545 		if( strlcpy( Conf_ServerAdmin1, Arg, sizeof( Conf_ServerAdmin1 )) >= sizeof( Conf_ServerAdmin1 )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"AdminInfo1\" too long!", NGIRCd_ConfFile, Line );
546 		return;
547 	}
548 	if( strcasecmp( Var, "AdminInfo2" ) == 0 )
549 	{
550 		/* Administrative info #2 */
551 		if( strlcpy( Conf_ServerAdmin2, Arg, sizeof( Conf_ServerAdmin2 )) >= sizeof( Conf_ServerAdmin2 )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"AdminInfo2\" too long!", NGIRCd_ConfFile, Line );
552 		return;
553 	}
554 	if( strcasecmp( Var, "AdminEMail" ) == 0 )
555 	{
556 		/* Administrative email contact */
557 		if( strlcpy( Conf_ServerAdminMail, Arg, sizeof( Conf_ServerAdminMail )) >= sizeof( Conf_ServerAdminMail )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"AdminEMail\" too long!", NGIRCd_ConfFile, Line );
558 		return;
559 	}
560 	if( strcasecmp( Var, "Ports" ) == 0 )
561 	{
562 		/* Ports on that the server should listen. More port numbers
563 		 * must be separated by "," */
564 		ptr = strtok( Arg, "," );
565 		while( ptr )
566 		{
567 			ngt_TrimStr( ptr );
568 			port = atol( ptr );
569 			if( Conf_ListenPorts_Count + 1 > MAX_LISTEN_PORTS ) Config_Error( LOG_ERR, "Too many listen ports configured. Port %ld ignored.", port );
570 			else
571 			{
572 				if( port > 0 && port < 0xFFFF ) Conf_ListenPorts[Conf_ListenPorts_Count++] = (UINT)port;
573 				else Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Illegal port number %ld!", NGIRCd_ConfFile, Line, port );
574 			}
575 			ptr = strtok( NULL, "," );
576 		}
577 		return;
578 	}
579 	if( strcasecmp( Var, "MotdFile" ) == 0 )
580 	{
581 		/* "Message of the day" (MOTD) file */
582 		if( strlcpy( Conf_MotdFile, Arg, sizeof( Conf_MotdFile )) >= sizeof( Conf_MotdFile )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"MotdFile\" too long!", NGIRCd_ConfFile, Line );
583 		return;
584 	}
585 	if( strcasecmp( Var, "ServerUID" ) == 0 )
586 	{
587 		/* UID the daemon should switch to */
588 		pwd = getpwnam( Arg );
589 		if( pwd ) Conf_UID = pwd->pw_uid;
590 		else
591 		{
592 #ifdef HAVE_ISDIGIT
593 			if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"ServerUID\" is not a number!", NGIRCd_ConfFile, Line );
594 			else
595 #endif
596 			Conf_UID = (UINT)atoi( Arg );
597 		}
598 		return;
599 	}
600 	if( strcasecmp( Var, "ServerGID" ) == 0 )
601 	{
602 		/* GID the daemon should use */
603 		grp = getgrnam( Arg );
604 		if( grp ) Conf_GID = grp->gr_gid;
605 		else
606 		{
607 #ifdef HAVE_ISDIGIT
608 			if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"ServerGID\" is not a number!", NGIRCd_ConfFile, Line );
609 			else
610 #endif
611 			Conf_GID = (UINT)atoi( Arg );
612 		}
613 		return;
614 	}
615 	if( strcasecmp( Var, "PingTimeout" ) == 0 )
616 	{
617 		/* PING timeout */
618 		Conf_PingTimeout = atoi( Arg );
619 		if( Conf_PingTimeout < 5 )
620 		{
621 			Config_Error( LOG_WARNING, "%s, line %d: Value of \"PingTimeout\" too low!", NGIRCd_ConfFile, Line );
622 			Conf_PingTimeout = 5;
623 		}
624 		return;
625 	}
626 	if( strcasecmp( Var, "PongTimeout" ) == 0 )
627 	{
628 		/* PONG timeout */
629 		Conf_PongTimeout = atoi( Arg );
630 		if( Conf_PongTimeout < 5 )
631 		{
632 			Config_Error( LOG_WARNING, "%s, line %d: Value of \"PongTimeout\" too low!", NGIRCd_ConfFile, Line );
633 			Conf_PongTimeout = 5;
634 		}
635 		return;
636 	}
637 	if( strcasecmp( Var, "ConnectRetry" ) == 0 )
638 	{
639 		/* Seconds between connection attempts to other servers */
640 		Conf_ConnectRetry = atoi( Arg );
641 		if( Conf_ConnectRetry < 5 )
642 		{
643 			Config_Error( LOG_WARNING, "%s, line %d: Value of \"ConnectRetry\" too low!", NGIRCd_ConfFile, Line );
644 			Conf_ConnectRetry = 5;
645 		}
646 		return;
647 	}
648 	if( strcasecmp( Var, "OperCanUseMode" ) == 0 )
649 	{
650 		/* Are IRC operators allowed to use MODE in channels they aren't Op in? */
651 		if( strcasecmp( Arg, "yes" ) == 0 ) Conf_OperCanMode = TRUE;
652 		else if( strcasecmp( Arg, "true" ) == 0 ) Conf_OperCanMode = TRUE;
653 		else if( atoi( Arg ) != 0 ) Conf_OperCanMode = TRUE;
654 		else Conf_OperCanMode = FALSE;
655 		return;
656 	}
657 	if( strcasecmp( Var, "MaxConnections" ) == 0 )
658 	{
659 		/* Maximum number of connections. Values <= 0 are equal to "no limit". */
660 #ifdef HAVE_ISDIGIT
661 		if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"MaxConnections\" is not a number!", NGIRCd_ConfFile, Line );
662 		else
663 #endif
664 		Conf_MaxConnections = atol( Arg );
665 		return;
666 	}
667 	if( strcasecmp( Var, "MaxJoins" ) == 0 )
668 	{
669 		/* Maximum number of channels a user can join. Values <= 0 are equal to "no limit". */
670 #ifdef HAVE_ISDIGIT
671 		if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"MaxJoins\" is not a number!", NGIRCd_ConfFile, Line );
672 		else
673 #endif
674 		Conf_MaxJoins = atoi( Arg );
675 		return;
676 	}
677 
678 	Config_Error( LOG_ERR, "%s, line %d (section \"Global\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
679 } /* Handle_GLOBAL */
680 
681 
682 LOCAL VOID
683 Handle_OPERATOR( INT Line, CHAR *Var, CHAR *Arg )
684 {
685 	assert( Line > 0 );
686 	assert( Var != NULL );
687 	assert( Arg != NULL );
688 	assert( Conf_Oper_Count > 0 );
689 
690 	if( strcasecmp( Var, "Name" ) == 0 )
691 	{
692 		/* Name of IRC operator */
693 		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( LOG_WARNING, "%s, line %d: Value of \"Name\" too long!", NGIRCd_ConfFile, Line );
694 		return;
695 	}
696 	if( strcasecmp( Var, "Password" ) == 0 )
697 	{
698 		/* Password of IRC operator */
699 		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( LOG_WARNING, "%s, line %d: Value of \"Password\" too long!", NGIRCd_ConfFile, Line );
700 		return;
701 	}
702 	
703 	Config_Error( LOG_ERR, "%s, line %d (section \"Operator\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
704 } /* Handle_OPERATOR */
705 
706 
707 LOCAL VOID
708 Handle_SERVER( INT Line, CHAR *Var, CHAR *Arg )
709 {
710 	LONG port;
711 	
712 	assert( Line > 0 );
713 	assert( Var != NULL );
714 	assert( Arg != NULL );
715 
716 	/* Ignore server block if no space is left in server configuration structure */
717 	if( New_Server_Idx <= NONE ) return;
718 
719 	if( strcasecmp( Var, "Host" ) == 0 )
720 	{
721 		/* Hostname of the server */
722 		if( strlcpy( New_Server.host, Arg, sizeof( New_Server.host )) >= sizeof( New_Server.host )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Host\" too long!", NGIRCd_ConfFile, Line );
723 		return;
724 	}
725 	if( strcasecmp( Var, "Name" ) == 0 )
726 	{
727 		/* Name of the server ("Nick"/"ID") */
728 		if( strlcpy( New_Server.name, Arg, sizeof( New_Server.name )) >= sizeof( New_Server.name )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Name\" too long!", NGIRCd_ConfFile, Line );
729 		return;
730 	}
731 	if( strcasecmp( Var, "MyPassword" ) == 0 )
732 	{
733 		/* Password of this server which is sent to the peer */
734 		if( strlcpy( New_Server.pwd_in, Arg, sizeof( New_Server.pwd_in )) >= sizeof( New_Server.pwd_in )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"MyPassword\" too long!", NGIRCd_ConfFile, Line );
735 		return;
736 	}
737 	if( strcasecmp( Var, "PeerPassword" ) == 0 )
738 	{
739 		/* Passwort of the peer which must be received */
740 		if( strlcpy( New_Server.pwd_out, Arg, sizeof( New_Server.pwd_out )) >= sizeof( New_Server.pwd_out )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"PeerPassword\" too long!", NGIRCd_ConfFile, Line );
741 		return;
742 	}
743 	if( strcasecmp( Var, "Port" ) == 0 )
744 	{
745 		/* Port to which this server should connect */
746 		port = atol( Arg );
747 		if( port > 0 && port < 0xFFFF ) New_Server.port = (INT)port;
748 		else Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Illegal port number %ld!", NGIRCd_ConfFile, Line, port );
749 		return;
750 	}
751 	if( strcasecmp( Var, "Group" ) == 0 )
752 	{
753 		/* Server group */
754 #ifdef HAVE_ISDIGIT
755 		if( ! isdigit( *Arg )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Group\" is not a number!", NGIRCd_ConfFile, Line );
756 		else
757 #endif
758 		New_Server.group = atoi( Arg );
759 		return;
760 	}
761 	
762 	Config_Error( LOG_ERR, "%s, line %d (section \"Server\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
763 } /* Handle_SERVER */
764 
765 
766 LOCAL VOID
767 Handle_CHANNEL( INT Line, CHAR *Var, CHAR *Arg )
768 {
769 	assert( Line > 0 );
770 	assert( Var != NULL );
771 	assert( Arg != NULL );
772 
773 	if( strcasecmp( Var, "Name" ) == 0 )
774 	{
775 		/* Name of the channel */
776 		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 )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Name\" too long!", NGIRCd_ConfFile, Line );
777 		return;
778 	}
779 	if( strcasecmp( Var, "Modes" ) == 0 )
780 	{
781 		/* Initial modes */
782 		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 )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Modes\" too long!", NGIRCd_ConfFile, Line );
783 		return;
784 	}
785 	if( strcasecmp( Var, "Topic" ) == 0 )
786 	{
787 		/* Initial topic */
788 		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 )) Config_Error( LOG_WARNING, "%s, line %d: Value of \"Topic\" too long!", NGIRCd_ConfFile, Line );
789 		return;
790 	}
791 
792 	Config_Error( LOG_ERR, "%s, line %d (section \"Channel\"): Unknown variable \"%s\"!", NGIRCd_ConfFile, Line, Var );
793 } /* Handle_CHANNEL */
794 
795 
796 LOCAL VOID
797 Validate_Config( BOOLEAN Configtest )
798 {
799 	/* Validate configuration settings. */
800 
801 #ifdef DEBUG
802 	INT i, servers, servers_once;
803 #endif
804 
805 	if( ! Conf_ServerName[0] )
806 	{
807 		/* No server name configured! */
808 		Config_Error( LOG_ALERT, "No server name configured in \"%s\" ('ServerName')!", NGIRCd_ConfFile );
809 		if( ! Configtest )
810 		{
811 			Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
812 			exit( 1 );
813 		}
814 	}
815 
816 #ifdef STRICT_RFC
817 	if( ! Conf_ServerAdminMail[0] )
818 	{
819 		/* No administrative contact configured! */
820 		Config_Error( LOG_ALERT, "No administrator email address configured in \"%s\" ('AdminEMail')!", NGIRCd_ConfFile );
821 		if( ! Configtest )
822 		{
823 			Config_Error( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
824 			exit( 1 );
825 		}
826 	}
827 #endif
828 
829 	if( ! Conf_ServerAdmin1[0] && ! Conf_ServerAdmin2[0] && ! Conf_ServerAdminMail[0] )
830 	{
831 		/* No administrative information configured! */
832 		Config_Error( LOG_WARNING, "No administrative information configured but required by RFC!" );
833 	}
834 #ifdef FD_SETSIZE	
835 	if(( Conf_MaxConnections > (LONG)FD_SETSIZE ) || ( Conf_MaxConnections < 1 ))
836 	{
837 		Conf_MaxConnections = (LONG)FD_SETSIZE;
838 		Config_Error( LOG_ERR, "Setting MaxConnections to %ld, select() can't handle more file descriptors!", Conf_MaxConnections );
839 	}
840 #else
841 	Config_Error( LOG_WARN, "Don't know how many file descriptors select() can handle on this system, don't set MaxConnections too high!" );
842 #endif
843 
844 #ifdef DEBUG
845 	servers = servers_once = 0;
846 	for( i = 0; i < MAX_SERVERS; i++ )
847 	{
848 		if( Conf_Server[i].name[0] )
849 		{
850 			servers++;
851 			if( Conf_Server[i].flags & CONF_SFLAG_ONCE ) servers_once++;
852 		}
853 	}
854 	Log( LOG_DEBUG, "Configuration: Operators=%d, Servers=%d[%d], Channels=%d", Conf_Oper_Count, servers, servers_once, Conf_Channel_Count );
855 #endif
856 } /* Validate_Config */
857 
858 
859 #ifdef PROTOTYPES
860 LOCAL VOID Config_Error( CONST INT Level, CONST CHAR *Format, ... )
861 #else
862 LOCAL VOID Config_Error( Level, Format, va_alist )
863 CONST INT Level;
864 CONST CHAR *Format;
865 va_dcl
866 #endif
867 {
868 	/* Error! Write to console and/or logfile. */
869 
870 	CHAR msg[MAX_LOG_MSG_LEN];
871 	va_list ap;
872 
873 	assert( Format != NULL );
874 
875 #ifdef PROTOTYPES
876 	va_start( ap, Format );
877 #else
878 	va_start( ap );
879 #endif
880 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
881 	va_end( ap );
882 	
883 	/* During "normal operations" the log functions of the daemon should
884 	 * be used, but during testing of the configuration file, all messages
885 	 * should go directly to the console: */
886 	if( Use_Log ) Log( Level, "%s", msg );
887 	else puts( msg );
888 } /* Config_Error */
889 
890 
891 LOCAL VOID
892 Init_Server_Struct( CONF_SERVER *Server )
893 {
894 	/* Initialize server configuration structur to default values */
895 
896 	assert( Server != NULL );
897 
898 	strcpy( Server->host, "" );
899 	strcpy( Server->ip, "" );
900 	strcpy( Server->name, "" );
901 	strcpy( Server->pwd_in, "" );
902 	strcpy( Server->pwd_out, "" );
903 	Server->port = 0;
904 	Server->group = NONE;
905 	Server->lasttry = time( NULL ) - Conf_ConnectRetry + STARTUP_DELAY;
906 	Server->res_stat = NULL;
907 	if( NGIRCd_Passive ) Server->flags = CONF_SFLAG_DISABLED;
908 	else Server->flags = 0;
909 	Server->conn_id = NONE;
910 } /* Init_Server_Struct */
911 
912 
913 /* -eof- */