aboutsummaryrefslogtreecommitdiffstats
path: root/lib/misc.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/misc.h')
0 files changed, 0 insertions, 0 deletions
'n57' href='#n57'>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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
  /********************************************************************\
  * BitlBee -- An IRC to other IM-networks gateway                     *
  *                                                                    *
  * Copyright 2002-2012 Wilmer van der Gaast and others                *
  \********************************************************************/

/* IRC commands                                                         */

/*
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License with
  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
  if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  Suite 330, Boston, MA  02111-1307  USA
*/

#define BITLBEE_CORE
#include "bitlbee.h"
#include "help.h"
#include "ipc.h"

static void irc_cmd_pass( irc_t *irc, char **cmd )
{
	if( irc->status & USTATUS_LOGGED_IN )
	{
		char *send_cmd[] = { "identify", cmd[1], NULL };
		
		/* We're already logged in, this client seems to send the PASS
		   command last. (Possibly it won't send it at all if it turns
		   out we don't require it, which will break this feature.)
		   Try to identify using the given password. */
		root_command( irc, send_cmd );
		return;
	}
	/* Handling in pre-logged-in state, first see if this server is
	   password-protected: */
	else if( global.conf->auth_pass &&
	    ( strncmp( global.conf->auth_pass, "md5:", 4 ) == 0 ?
	        md5_verify_password( cmd[1], global.conf->auth_pass + 4 ) == 0 :
	        strcmp( cmd[1], global.conf->auth_pass ) == 0 ) )
	{
		irc->status |= USTATUS_AUTHORIZED;
		irc_check_login( irc );
	}
	else if( global.conf->auth_pass )
	{
		irc_send_num( irc, 464, ":Incorrect password" );
	}
	else
	{
		/* Remember the password and try to identify after USER/NICK. */
		irc_setpass( irc, cmd[1] );
		irc_check_login( irc );
	}
}

static void irc_cmd_user( irc_t *irc, char **cmd )
{
	irc->user->user = g_strdup( cmd[1] );
	irc->user->fullname = g_strdup( cmd[4] );
	
	irc_check_login( irc );
}

static void irc_cmd_nick( irc_t *irc, char **cmd )
{
	irc_user_t *iu;
	
	if( ( iu = irc_user_by_name( irc, cmd[1] ) ) && iu != irc->user )
	{
		irc_send_num( irc, 433, "%s :This nick is already in use", cmd[1] );
	}
	else if( !nick_ok( NULL, cmd[1] ) )
	{
		/* [SH] Invalid characters. */
		irc_send_num( irc, 432, "%s :This nick contains invalid characters", cmd[1] );
	}
	else if( irc->status & USTATUS_LOGGED_IN )
	{
		/* WATCH OUT: iu from the first if reused here to check if the
		   new nickname is the same (other than case, possibly). If it
		   is, no need to reset identify-status. */
		if( ( irc->status & USTATUS_IDENTIFIED ) && iu != irc->user )
		{
			irc_setpass( irc, NULL );
			irc->status &= ~USTATUS_IDENTIFIED;
			irc_umode_set( irc, "-R", 1 );
			irc_rootmsg( irc, "Changing nicks resets your identify status. "
			             "Re-identify or register a new account if you want "
			             "your configuration to be saved. See \x02help "
			             "nick_changes\x02." );
		}
		
		if( strcmp( cmd[1], irc->user->nick ) != 0 )
			irc_user_set_nick( irc->user, cmd[1] );
	}
	else
	{
		g_free( irc->user->nick );
		irc->user->nick = g_strdup( cmd[1] );
		
		irc_check_login( irc );
	}
}

static void irc_cmd_quit( irc_t *irc, char **cmd )
{
	if( cmd[1] && *cmd[1] )
		irc_abort( irc, 0, "Quit: %s", cmd[1] );
	else
		irc_abort( irc, 0, "Leaving..." );
}

static void irc_cmd_ping( irc_t *irc, char **cmd )
{
	irc_write( irc, ":%s PONG %s :%s", irc->root->host,
	           irc->root->host, cmd[1]?cmd[1]:irc->root->host );
}

static void irc_cmd_pong( irc_t *irc, char **cmd )
{
	/* We could check the value we get back from the user, but in
	   fact we don't care, we're just happy s/he's still alive. */
	irc->last_pong = gettime();
	irc->pinging = 0;
}

static void irc_cmd_join( irc_t *irc, char **cmd )
{
	char *comma, *s = cmd[1];
	
	while( s )
	{
		irc_channel_t *ic;
		
		if( ( comma = strchr( s, ',' ) ) )
			*comma = '\0';
		
		if( ( ic = irc_channel_by_name( irc, s ) ) == NULL &&
		    ( ic = irc_channel_new( irc, s ) ) )
		{
			if( strcmp( set_getstr( &ic->set, "type" ), "control" ) != 0 )
			{
				/* Autoconfiguration is for control channels only ATM. */
			}
			else if( bee_group_by_name( ic->irc->b, ic->name + 1, FALSE ) )
			{
				set_setstr( &ic->set, "group", ic->name + 1 );
				set_setstr( &ic->set, "fill_by", "group" );
			}
			else if( set_setstr( &ic->set, "protocol", ic->name + 1 ) )
			{
				set_setstr( &ic->set, "fill_by", "protocol" );
			}
			else if( set_setstr( &ic->set, "account", ic->name + 1 ) )
			{
				set_setstr( &ic->set, "fill_by", "account" );
			}
			else
			{
				/* The set commands above will run this already,
				   but if we didn't hit any, we have to fill the
				   channel with the default population. */
				bee_irc_channel_update( ic->irc, ic, NULL );
			}
		}
		else if( ic == NULL )
		{
			irc_send_num( irc, 479, "%s :Invalid channel name", s );
			goto next;
		}
		
		if( ic->flags & IRC_CHANNEL_JOINED )
			/* Dude, you're already there...
			   RFC doesn't have any reply for that though? */
			goto next;
		
		if( ic->f->join && !ic->f->join( ic ) )
			/* The story is: FALSE either means the handler
			   showed an error message, or is doing some work
			   before the join should be confirmed. (In the
			   latter case, the caller should take care of that
			   confirmation.) TRUE means all's good, let the
			   user join the channel right away. */
			goto next;
		
		irc_channel_add_user( ic, irc->user );
		
next:
		if( comma )
		{
			s = comma + 1;
			*comma = ',';
		}
		else
			break;
	}
}

static void irc_cmd_names( irc_t *irc, char **cmd )
{
	irc_channel_t *ic;
	
	if( cmd[1] && ( ic = irc_channel_by_name( irc, cmd[1] ) ) )
		irc_send_names( ic );
	/* With no args, we should show /names of all chans. Make the code
	   below work well if necessary.
	else
	{
		GSList *l;
		
		for( l = irc->channels; l; l = l->next )
			irc_send_names( l->data );
	}
	*/
}

static void irc_cmd_part( irc_t *irc, char **cmd )
{
	irc_channel_t *ic;
	
	if( ( ic = irc_channel_by_name( irc, cmd[1] ) ) == NULL )
	{
		irc_send_num( irc, 403, "%s :No such channel", cmd[1] );
	}
	else if( irc_channel_del_user( ic, irc->user, IRC_CDU_PART, cmd[2] ) )
	{
		if( ic->f->part )
			ic->f->part( ic, NULL );
	}
	else
	{
		irc_send_num( irc, 442, "%s :You're not on that channel", cmd[1] );
	}
}

static void irc_cmd_whois( irc_t *irc, char **cmd )
{
	char *nick = cmd[1];
	irc_user_t *iu = irc_user_by_name( irc, nick );
	
	if( iu )
		irc_send_whois( iu );
	else
		irc_send_num( irc, 401, "%s :Nick does not exist", nick );
}

static void irc_cmd_whowas( irc_t *irc, char **cmd )
{
	/* For some reason irssi tries a whowas when whois fails. We can
	   ignore this, but then the user never gets a "user not found"
	   message from irssi which is a bit annoying. So just respond
	   with not-found and irssi users will get better error messages */
	
	irc_send_num( irc, 406, "%s :Nick does not exist", cmd[1] );
	irc_send_num( irc, 369, "%s :End of WHOWAS", cmd[1] );
}

static void irc_cmd_motd( irc_t *irc, char **cmd )
{
	irc_send_motd( irc );
}

static void irc_cmd_mode( irc_t *irc, char **cmd )
{
	if( irc_channel_name_ok( cmd[1] ) )
	{
		irc_channel_t *ic;
		
		if( ( ic = irc_channel_by_name( irc, cmd[1] ) ) == NULL )
			irc_send_num( irc, 403, "%s :No such channel", cmd[1] );
		else if( cmd[2] )
		{
			if( *cmd[2] == '+' || *cmd[2] == '-' )
				irc_send_num( irc, 477, "%s :Can't change channel modes", cmd[1] );
			else if( *cmd[2] == 'b' )
				irc_send_num( irc, 368, "%s :No bans possible", cmd[1] );
		}
		else
			irc_send_num( irc, 324, "%s +%s", cmd[1], ic->mode );
	}
	else
	{
		if( nick_cmp( NULL, cmd[1], irc->user->nick ) == 0 )
		{
			if( cmd[2] )
				irc_umode_set( irc, cmd[2], 0 );
			else
				irc_send_num( irc, 221, "+%s", irc->umode );
		}
		else
			irc_send_num( irc, 502, ":Don't touch their modes" );
	}
}

static void irc_cmd_who( irc_t *irc, char **cmd )
{
	char *channel = cmd[1];
	irc_channel_t *ic;
	irc_user_t *iu;
	
	if( !channel || *channel == '0' || *channel == '*' || !*channel )
		irc_send_who( irc, irc->users, "**" );
	else if( ( ic = irc_channel_by_name( irc, channel ) ) )
		irc_send_who( irc, ic->users, channel );
	else if( ( iu = irc_user_by_name( irc, channel ) ) )
	{
		/* Tiny hack! */
		GSList *l = g_slist_append( NULL, iu );
		irc_send_who( irc, l, channel );
		g_slist_free( l );
	}
	else
		irc_send_num( irc, 403, "%s :No such channel", channel );
}

static void irc_cmd_privmsg( irc_t *irc, char **cmd )
{
	irc_channel_t *ic;
	irc_user_t *iu;
	
	if( !cmd[2] ) 
	{
		irc_send_num( irc, 412, ":No text to send" );
		return;
	}
	
	/* Don't treat CTCP actions as real CTCPs, just convert them right now. */
	if( g_strncasecmp( cmd[2], "\001ACTION", 7 ) == 0 )
	{
		cmd[2] += 4;
		memcpy( cmd[2], "/me", 3 );
		if( cmd[2][strlen(cmd[2])-1] == '\001' )
			cmd[2][strlen(cmd[2])-1] = '\0';
	}
	
	if( irc_channel_name_ok( cmd[1] ) &&
	    ( ic = irc_channel_by_name( irc, cmd[1] ) ) )
	{
		if( cmd[2][0] == '\001' )
		{
			/* CTCPs to channels? Nah. Maybe later. */
		}
		else if( ic->f->privmsg )
			ic->f->privmsg( ic, cmd[2] );
	}
	else if( ( iu = irc_user_by_name( irc, cmd[1] ) ) )
	{
		if( cmd[2][0] == '\001' )
		{
			char **ctcp;
			
			if( iu->f->ctcp == NULL )
				return;
			if( cmd[2][strlen(cmd[2])-1] == '\001' )
				cmd[2][strlen(cmd[2])-1] = '\0';
			
			ctcp = split_command_parts( cmd[2] + 1 );
			iu->f->ctcp( iu, ctcp );
		}
		else if( iu->f->privmsg )
		{
			iu->last_channel = NULL;
			iu->f->privmsg( iu, cmd[2] );
		}
	}
	else
	{
		irc_send_num( irc, 401, "%s :No such nick/channel", cmd[1] );
	}
}

static void irc_cmd_notice( irc_t *irc, char **cmd )
{
	irc_user_t *iu;
	
	if( !cmd[2] ) 
	{
		irc_send_num( irc, 412, ":No text to send" );
		return;
	}
	
	/* At least for now just echo. IIRC some IRC clients use self-notices
	   for lag checks, so try to support that. */
	if( nick_cmp( NULL, cmd[1], irc->user->nick ) == 0 )
		irc_send_msg( irc->user, "NOTICE", irc->user->nick, cmd[2], NULL );
	else if( ( iu = irc_user_by_name( irc, cmd[1] ) ) )
		iu->f->privmsg( iu, cmd[2] );
}

static void irc_cmd_nickserv( irc_t *irc, char **cmd )
{
	/* [SH] This aliases the NickServ command to PRIVMSG root */
	/* [TV] This aliases the NS command to PRIVMSG root as well */
	root_command( irc, cmd + 1 );
}

static void irc_cmd_oper_hack( irc_t *irc, char **cmd );

static void irc_cmd_oper( irc_t *irc, char **cmd )
{
	/* Very non-standard evil but useful/secure hack, see below. */
	if( irc->status & OPER_HACK_ANY )
		return irc_cmd_oper_hack( irc, cmd );
	
	if( global.conf->oper_pass &&
	    ( strncmp( global.conf->oper_pass, "md5:", 4 ) == 0 ?
	        md5_verify_password( cmd[2], global.conf->oper_pass + 4 ) == 0 :
	        strcmp( cmd[2], global.conf->oper_pass ) == 0 ) )
	{
		irc_umode_set( irc, "+o", 1 );
		irc_send_num( irc, 381, ":Password accepted" );
	}
	else
	{
		irc_send_num( irc, 491, ":Incorrect password" );
	}
}

static void irc_cmd_oper_hack( irc_t *irc, char **cmd )
{
	char *password = g_strjoinv( " ", cmd + 2 );
	
	/* /OPER can now also be used to enter IM/identify passwords without
	   echoing. It's a hack but the extra password security is worth it. */
	if( irc->status & OPER_HACK_ACCOUNT_ADD )
	{
		account_t *a;
		
		for( a = irc->b->accounts; a; a = a->next )
			if( strcmp( a->pass, PASSWORD_PENDING ) == 0 )
			{
				set_setstr( &a->set, "password", password );
				irc_rootmsg( irc, "Password added to IM account "
				             "%s", a->tag );
				/* The IRC client may expect this. 491 suggests the OPER
				   password was wrong, so the client won't expect a +o.
				   It may however repeat the password prompt. We'll see. */
				irc_send_num( irc, 491, ":Password added to IM account "
				              "%s", a->tag );
			}
	}
	else if( irc->status & OPER_HACK_IDENTIFY )
	{
		char *send_cmd[] = { "identify", password, NULL, NULL };
		irc->status &= ~OPER_HACK_IDENTIFY;
		if( irc->status & OPER_HACK_IDENTIFY_NOLOAD )
		{
			send_cmd[1] = "-noload";
			send_cmd[2] = password;
		}
		else if( irc->status & OPER_HACK_IDENTIFY_FORCE )
		{
			send_cmd[1] = "-force";
			send_cmd[2] = password;
		}
		irc_send_num( irc, 491, ":Trying to identify" );
		root_command( irc, send_cmd );
	}
	else if( irc->status & OPER_HACK_REGISTER )
	{
		char *send_cmd[] = { "register", password, NULL };
		irc_send_num( irc, 491, ":Trying to identify" );
		root_command( irc, send_cmd );
	}
	
	irc->status &= ~OPER_HACK_ANY;
	g_free( password );
}

static void irc_cmd_invite( irc_t *irc, char **cmd )
{
	irc_channel_t *ic;
	irc_user_t *iu;
	
	if( ( iu = irc_user_by_name( irc, cmd[1] ) ) == NULL )
	{
		irc_send_num( irc, 401, "%s :No such nick", cmd[1] );
		return;
	}
	else if( ( ic = irc_channel_by_name( irc, cmd[2] ) ) == NULL )
	{
		irc_send_num( irc, 403, "%s :No such channel", cmd[2] );
		return;
	}
	
	if( !ic->f->invite )
		irc_send_num( irc, 482, "%s :Can't invite people here", cmd[2] );
	else if( ic->f->invite( ic, iu ) )
		irc_send_num( irc, 341, "%s %s", iu->nick, ic->name );
}

static void irc_cmd_userhost( irc_t *irc, char **cmd )
{
	int i;
	
	/* [TV] Usable USERHOST-implementation according to
		RFC1459. Without this, mIRC shows an error
		while connecting, and the used way of rejecting
		breaks standards.
	*/
	
	for( i = 1; cmd[i]; i ++ )
	{
		irc_user_t *iu = irc_user_by_name( irc, cmd[i] );
		
		if( iu )
			irc_send_num( irc, 302, ":%s=%c%s@%s", iu->nick,
			              irc_user_get_away( iu ) ? '-' : '+',
			              iu->user, iu->host );
	}
}

static void irc_cmd_ison( irc_t *irc, char **cmd )
{
	char buff[IRC_MAX_LINE];
	int lenleft, i;
	
	buff[0] = '\0';
	
	/* [SH] Leave room for : and \0 */
	lenleft = IRC_MAX_LINE - 2;
	
	for( i = 1; cmd[i]; i ++ )
	{
		char *this, *next;
		
		this = cmd[i];
		while( *this )
		{
			irc_user_t *iu;
			
			if( ( next = strchr( this, ' ' ) ) )
				*next = 0;
			
			if( ( iu = irc_user_by_name( irc, this ) ) &&
			    iu->bu && iu->bu->flags & BEE_USER_ONLINE )
			{
				lenleft -= strlen( iu->nick ) + 1;
				
				if( lenleft < 0 )
					break;
				
				strcat( buff, iu->nick );
				strcat( buff, " " );
			}
			
			if( next )
			{
				*next = ' ';
				this = next + 1;
			}
			else
			{
				break;
			}    
		}
		
		/* *sigh* */
		if( lenleft < 0 )
			break;
	}
	
	if( strlen( buff ) > 0 )
		buff[strlen(buff)-1] = '\0';
	
	irc_send_num( irc, 303, ":%s", buff );
}

static void irc_cmd_watch( irc_t *irc, char **cmd )
{
	int i;
	
	/* Obviously we could also mark a user structure as being
	   watched, but what if the WATCH command is sent right
	   after connecting? The user won't exist yet then... */
	for( i = 1; cmd[i]; i ++ )
	{
		char *nick;
		irc_user_t *iu;
		
		if( !cmd[i][0] || !cmd[i][1] )
			break;
		
		nick = g_strdup( cmd[i] + 1 );
		nick_lc( irc, nick );
		
		iu = irc_user_by_name( irc, nick );
		
		if( cmd[i][0] == '+' )
		{
			if( !g_hash_table_lookup( irc->watches, nick ) )
				g_hash_table_insert( irc->watches, nick, nick );
			
			if( iu && iu->bu && iu->bu->flags & BEE_USER_ONLINE )
				irc_send_num( irc, 604, "%s %s %s %d :%s", iu->nick, iu->user,
				              iu->host, (int) time( NULL ), "is online" );
			else
				irc_send_num( irc, 605, "%s %s %s %d :%s", nick, "*", "*",
				              (int) time( NULL ), "is offline" );
		}
		else if( cmd[i][0] == '-' )
		{
			gpointer okey, ovalue;
			
			if( g_hash_table_lookup_extended( irc->watches, nick, &okey, &ovalue ) )
			{
				g_hash_table_remove( irc->watches, okey );
				g_free( okey );
				
				irc_send_num( irc, 602, "%s %s %s %d :%s", nick, "*", "*", 0, "Stopped watching" );
			}
		}
	}
}

static void irc_cmd_topic( irc_t *irc, char **cmd )
{
	irc_channel_t *ic = irc_channel_by_name( irc, cmd[1] );
	const char *new = cmd[2];
	
	if( ic == NULL )
	{
		irc_send_num( irc, 403, "%s :No such channel", cmd[1] );
	}
	else if( new )
	{
		if( ic->f->topic == NULL )
			irc_send_num( irc, 482, "%s :Can't change this channel's topic", ic->name );
		else if( ic->f->topic( ic, new ) )
			irc_send_topic( ic, TRUE );
	}
	else
	{
		irc_send_topic( ic, FALSE );
	}
}

static void irc_cmd_away( irc_t *irc, char **cmd )
{
	if( cmd[1] && *cmd[1] )
	{
		char away[strlen(cmd[1])+1];
		int i, j;
		
		/* Copy away string, but skip control chars. Mainly because
		   Jabber really doesn't like them. */
		for( i = j = 0; cmd[1][i]; i ++ )
			if( (unsigned char) ( away[j] = cmd[1][i] ) >= ' ' )
				j ++;
		away[j] = '\0';
		
		irc_send_num( irc, 306, ":You're now away: %s", away );
		set_setstr( &irc->b->set, "away", away );
	}
	else
	{
		irc_send_num( irc, 305, ":Welcome back" );
		set_setstr( &irc->b->set, "away", NULL );
	}
}

static void irc_cmd_list( irc_t *irc, char **cmd )
{
	GSList *l;
	
	for( l = irc->channels; l; l = l->next )
	{
		irc_channel_t *ic = l->data;
		
		irc_send_num( irc, 322, "%s %d :%s",
		              ic->name, g_slist_length( ic->users ), ic->topic ? : "" );
	}
	irc_send_num( irc, 323, ":%s", "End of /LIST" );
}

static void irc_cmd_version( irc_t *irc, char **cmd )
{
	irc_send_num( irc, 351, "%s-%s. %s :%s/%s ",
	              PACKAGE, BITLBEE_VERSION, irc->root->host, ARCH, CPU );
}

static void irc_cmd_completions( irc_t *irc, char **cmd )
{
	help_t *h;
	set_t *s;
	int i;
	
	irc_send_msg_raw( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS OK" );
	
	for( i = 0; root_commands[i].command; i ++ )
		irc_send_msg_f( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS %s", root_commands[i].command );
	
	for( h = global.help; h; h = h->next )
		irc_send_msg_f( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS help %s", h->title );
	
	for( s = irc->b->set; s; s = s->next )
		irc_send_msg_f( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS set %s", s->key );
	
	irc_send_msg_raw( irc->root, "NOTICE", irc->user->nick, "COMPLETIONS END" );
}

static void irc_cmd_rehash( irc_t *irc, char **cmd )
{
	if( global.conf->runmode == RUNMODE_INETD )
		ipc_master_cmd_rehash( NULL, NULL );
	else
		ipc_to_master( cmd );
	
	irc_send_num( irc, 382, "%s :Rehashing", global.conf_file );
}

static const command_t irc_commands[] = {
	{ "pass",        1, irc_cmd_pass,        0 },
	{ "user",        4, irc_cmd_user,        IRC_CMD_PRE_LOGIN },
	{ "nick",        1, irc_cmd_nick,        0 },
	{ "quit",        0, irc_cmd_quit,        0 },
	{ "ping",        0, irc_cmd_ping,        0 },
	{ "pong",        0, irc_cmd_pong,        IRC_CMD_LOGGED_IN },
	{ "join",        1, irc_cmd_join,        IRC_CMD_LOGGED_IN },
	{ "names",       1, irc_cmd_names,       IRC_CMD_LOGGED_IN },
	{ "part",        1, irc_cmd_part,        IRC_CMD_LOGGED_IN },
	{ "whois",       1, irc_cmd_whois,       IRC_CMD_LOGGED_IN },
	{ "whowas",      1, irc_cmd_whowas,      IRC_CMD_LOGGED_IN },
	{ "motd",        0, irc_cmd_motd,        IRC_CMD_LOGGED_IN },
	{ "mode",        1, irc_cmd_mode,        IRC_CMD_LOGGED_IN },
	{ "who",         0, irc_cmd_who,         IRC_CMD_LOGGED_IN },
	{ "privmsg",     1, irc_cmd_privmsg,     IRC_CMD_LOGGED_IN },
	{ "notice",      1, irc_cmd_notice,      IRC_CMD_LOGGED_IN },
	{ "nickserv",    1, irc_cmd_nickserv,    IRC_CMD_LOGGED_IN },
	{ "ns",          1, irc_cmd_nickserv,    IRC_CMD_LOGGED_IN },
	{ "away",        0, irc_cmd_away,        IRC_CMD_LOGGED_IN },
	{ "version",     0, irc_cmd_version,     IRC_CMD_LOGGED_IN },
	{ "completions", 0, irc_cmd_completions, IRC_CMD_LOGGED_IN },
	{ "userhost",    1, irc_cmd_userhost,    IRC_CMD_LOGGED_IN },
	{ "ison",        1, irc_cmd_ison,        IRC_CMD_LOGGED_IN },
	{ "watch",       1, irc_cmd_watch,       IRC_CMD_LOGGED_IN },
	{ "invite",      2, irc_cmd_invite,      IRC_CMD_LOGGED_IN },
	{ "topic",       1, irc_cmd_topic,       IRC_CMD_LOGGED_IN },
	{ "oper",        2, irc_cmd_oper,        IRC_CMD_LOGGED_IN },
	{ "list",        0, irc_cmd_list,        IRC_CMD_LOGGED_IN },
	{ "die",         0, NULL,                IRC_CMD_OPER_ONLY | IRC_CMD_TO_MASTER },
	{ "deaf",        0, NULL,                IRC_CMD_OPER_ONLY | IRC_CMD_TO_MASTER },
	{ "wallops",     1, NULL,                IRC_CMD_OPER_ONLY | IRC_CMD_TO_MASTER },
	{ "wall",        1, NULL,                IRC_CMD_OPER_ONLY | IRC_CMD_TO_MASTER },
	{ "rehash",      0, irc_cmd_rehash,      IRC_CMD_OPER_ONLY },
	{ "restart",     0, NULL,                IRC_CMD_OPER_ONLY | IRC_CMD_TO_MASTER },
	{ "kill",        2, NULL,                IRC_CMD_OPER_ONLY | IRC_CMD_TO_MASTER },
	{ NULL }
};

void irc_exec( irc_t *irc, char *cmd[] )
{	
	int i, n_arg;
	
	if( !cmd[0] )
		return;
	
	for( i = 0; irc_commands[i].command; i++ )
		if( g_strcasecmp( irc_commands[i].command, cmd[0] ) == 0 )
		{
			/* There should be no typo in the next line: */
			for( n_arg = 0; cmd[n_arg]; n_arg ++ ); n_arg --;
			
			if( irc_commands[i].flags & IRC_CMD_PRE_LOGIN && irc->status & USTATUS_LOGGED_IN )
			{
				irc_send_num( irc, 462, ":Only allowed before logging in" );
			}
			else if( irc_commands[i].flags & IRC_CMD_LOGGED_IN && !( irc->status & USTATUS_LOGGED_IN ) )
			{
				irc_send_num( irc, 451, ":Register first" );
			}
			else if( irc_commands[i].flags & IRC_CMD_OPER_ONLY && !strchr( irc->umode, 'o' ) )
			{
				irc_send_num( irc, 481, ":Permission denied - You're not an IRC operator" );
			}
			else if( n_arg < irc_commands[i].required_parameters )
			{
				irc_send_num( irc, 461, "%s :Need more parameters", cmd[0] );
			}
			else if( irc_commands[i].flags & IRC_CMD_TO_MASTER )
			{
				/* IPC doesn't make sense in inetd mode,
				    but the function will catch that. */
				ipc_to_master( cmd );
			}
			else
			{
				irc_commands[i].execute( irc, cmd );
			}
			
			return;
		}
	
	if( irc->status & USTATUS_LOGGED_IN )
		irc_send_num( irc, 421, "%s :Unknown command", cmd[0] );
}