2 # Irc.pl: IRC core stuff.
5 # NOTE: Based on code by Kevin Lenzo & Patrick Cole (c) 1997
11 no strict 'subs'; # IN/STDIN
13 use vars qw(%floodjoin %nuh %dcc %cache %conns %channels %param %mask
14 %chanconf %orig %ircPort %ircstats %last %netsplit);
15 use vars qw($irc $nickserv $conn $msgType $who $talkchannel
16 $addressed $postprocess);
17 use vars qw($notcount $nottime $notsize $msgcount $msgtime $msgsize
18 $pubcount $pubtime $pubsize);
19 use vars qw($b_blue $ob);
20 use vars qw(@ircServers);
27 # It's probably closer to 510, but let's be cautious until we calculate it extensively.
30 # Keep track of last time we displayed Chans: to avoid spam in logs
31 my $lastChansTime = 0;
38 while ( my $host = shift @ircServers ) {
40 # JUST IN CASE. irq was complaining about this.
41 if ( $lastrun == time() ) {
42 &DEBUG('ircloop: hrm... lastrun == time()');
48 if ( !defined $host ) {
49 &DEBUG('ircloop: ircServers[x] = NULL.');
53 next unless ( exists $ircPort{$host} );
55 my $retval = &irc( $host, $ircPort{$host} );
56 next unless ( defined $retval and $retval == 0 );
59 if ( $error % 3 == 0 and $error != 0 ) {
60 &status('IRC: Could not connect.');
65 if ( $error >= 3 * 2 ) {
66 &status('IRC: cannot connect to any IRC servers; stopping.');
72 &status('IRC: ok, done one cycle of IRC servers; trying again.');
79 my ( $server, $port ) = @_;
83 # TODO: move all this to an sql table
84 my $iaddr = inet_aton($server);
85 my $paddr = sockaddr_in( $port, $iaddr );
86 my $proto = getprotobyname('tcp');
93 if ( $server =~ /\D$/ ) {
94 my $packed = scalar( gethostbyname($server) );
96 if ( !defined $packed ) {
97 &status(" cannot resolve $server.");
101 $resolve = inet_ntoa($packed);
102 ### warning in Sys/Hostname line 78???
103 ### caused inside Net::IRC?
107 Nick => $param{'ircNick'},
110 Ircname => $param{'ircName'},
112 $args{'LocalAddr'} = $param{'ircHost'} if ( $param{'ircHost'} );
113 $args{'Password'} = $param{'ircPasswd'} if ( $param{'ircPasswd'} );
115 foreach my $mynick ( split ',', $param{'ircNick'} ) {
117 "Connecting to port $port of server $server ($resolve) as $mynick ..."
119 $args{'Nick'} = $mynick;
120 $args{'Username'} = $mynick;
121 $conns{$mynick} = $irc->newconn(%args);
122 if ( !defined $conns{$mynick} ) {
123 &ERROR('IRC: connection failed.');
125 "add \"set ircHost 0.0.0.0\" to your config. If that does not work"
128 'Please check /etc/hosts to see if you have a localhost line like:'
130 &ERROR('127.0.0.1 localhost localhost');
132 'If this is still a problem, please contact the maintainer.');
134 $conns{$mynick}->maxlinelen($maxlinelen);
137 $conns{$mynick}->add_global_handler( 'caction', \&on_action );
138 $conns{$mynick}->add_global_handler( 'cdcc', \&on_dcc );
139 $conns{$mynick}->add_global_handler( 'cping', \&on_ping );
140 $conns{$mynick}->add_global_handler( 'crping', \&on_ping_reply );
141 $conns{$mynick}->add_global_handler( 'cversion', \&on_version );
142 $conns{$mynick}->add_global_handler( 'crversion', \&on_crversion );
143 $conns{$mynick}->add_global_handler( 'dcc_open', \&on_dcc_open );
144 $conns{$mynick}->add_global_handler( 'dcc_close', \&on_dcc_close );
145 $conns{$mynick}->add_global_handler( 'chat', \&on_chat );
146 $conns{$mynick}->add_global_handler( 'msg', \&on_msg );
147 $conns{$mynick}->add_global_handler( 'public', \&on_public );
148 $conns{$mynick}->add_global_handler( 'join', \&on_join );
149 $conns{$mynick}->add_global_handler( 'part', \&on_part );
150 $conns{$mynick}->add_global_handler( 'topic', \&on_topic );
151 $conns{$mynick}->add_global_handler( 'invite', \&on_invite );
152 $conns{$mynick}->add_global_handler( 'kick', \&on_kick );
153 $conns{$mynick}->add_global_handler( 'mode', \&on_mode );
154 $conns{$mynick}->add_global_handler( 'nick', \&on_nick );
155 $conns{$mynick}->add_global_handler( 'quit', \&on_quit );
156 $conns{$mynick}->add_global_handler( 'notice', \&on_notice );
158 ->add_global_handler( 'whoischannels', \&on_whoischannels );
160 ->add_global_handler( 'useronchannel', \&on_useronchannel );
161 $conns{$mynick}->add_global_handler( 'whois', \&on_whois );
162 $conns{$mynick}->add_global_handler( 'other', \&on_other );
163 $conns{$mynick}->add_global_handler( 'disconnect', \&on_disconnect );
165 ->add_global_handler( [ 251, 252, 253, 254, 255 ], \&on_init );
167 # $conns{$mynick}->add_global_handler(302, \&on_init); # userhost
168 $conns{$mynick}->add_global_handler( 303, \&on_ison ); # notify.
169 $conns{$mynick}->add_global_handler( 315, \&on_endofwho );
170 $conns{$mynick}->add_global_handler( 422, \&on_endofwho ); # nomotd.
171 $conns{$mynick}->add_global_handler( 324, \&on_modeis );
172 $conns{$mynick}->add_global_handler( 333, \&on_topicinfo );
173 $conns{$mynick}->add_global_handler( 352, \&on_who );
174 $conns{$mynick}->add_global_handler( 353, \&on_names );
175 $conns{$mynick}->add_global_handler( 366, \&on_endofnames );
176 $conns{$mynick}->add_global_handler( "001", \&on_connected )
178 $conns{$mynick}->add_global_handler( 433, \&on_nick_taken );
179 $conns{$mynick}->add_global_handler( 439, \&on_targettoofast );
181 # for proper joinnextChan behaviour
182 $conns{$mynick}->add_global_handler( 471, \&on_chanfull );
183 $conns{$mynick}->add_global_handler( 473, \&on_inviteonly );
184 $conns{$mynick}->add_global_handler( 474, \&on_banned );
185 $conns{$mynick}->add_global_handler( 475, \&on_badchankey );
186 $conns{$mynick}->add_global_handler( 443, \&on_useronchan );
188 # end of handler stuff.
193 # change internal timeout value for scheduler.
194 $irc->{_timeout} = 10; # how about 60?
195 # Net::IRC debugging.
198 $ircstats{'Server'} = "$server:$port";
200 # works? needs to actually do something
201 # should likely listen on a tcp port instead
202 #$irc->addfh(STDIN, \&on_stdin, 'r');
204 &status('starting main loop');
209 ######################################################################
210 ######## IRC ALIASES IRC ALIASES IRC ALIASES IRC ALIASES #######
211 ######################################################################
217 # slow down a bit if traffic is 'high'.
218 # need to take into account time of last message sent.
219 if ( $last{buflen} > 256 and length($buf) > 256 ) {
223 $conn->sl($buf) if ( &whatInterface() =~ /IRC/ );
225 $last{buflen} = length($buf);
230 my $mynick = $conn->nick();
231 if ( !defined $msg ) {
233 &WARN("say: msg == $msg.");
237 if ( &getChanConf( 'silent', $talkchannel )
238 and not( &IsFlag('s') and &verifyUser( $who, $nuh{ lc $who } ) ) )
240 &DEBUG("say: silent in $talkchannel, not saying $msg");
247 elsif ( $postprocess = &getChanConf( 'postprocess', $talkchannel ) ) {
248 &DEBUG("say: $postprocess $msg");
249 &parseCmdHook( $postprocess . ' ' . $msg );
254 &status("<$mynick/$talkchannel> $msg");
256 return unless ( &whatInterface() =~ /IRC/ );
258 $msg = 'zero' if ( $msg =~ /^0+$/ );
262 if ( $t == $pubtime ) {
264 $pubsize += length $msg;
266 my $i = &getChanConfDefault( 'sendPublicLimitLines', 3, $chan );
267 my $j = &getChanConfDefault( 'sendPublicLimitBytes', 1000, $chan );
269 if ( ( $pubcount % $i ) == 0 and $pubcount ) {
272 elsif ( $pubsize > $j ) {
281 $pubsize = length $msg;
284 $conn->privmsg( $talkchannel, $msg );
288 my ( $nick, $msg ) = @_;
289 if ( !defined $nick ) {
290 &ERROR('msg: nick == NULL.');
294 if ( !defined $msg ) {
296 &WARN("msg: msg == $msg.");
300 # some say() end up here (eg +help)
301 if ( &getChanConf( 'silent', $nick )
302 and not( &IsFlag('s') and &verifyUser( $who, $nuh{ lc $who } ) ) )
304 &DEBUG("msg: silent in $nick, not saying $msg");
308 &status(">$nick< $msg");
310 return unless ( &whatInterface() =~ /IRC/ );
313 if ( $t == $msgtime ) {
315 $msgsize += length $msg;
317 my $i = &getChanConfDefault( 'sendPrivateLimitLines', 3, $chan );
318 my $j = &getChanConfDefault( 'sendPrivateLimitBytes', 1000, $chan );
319 if ( ( $msgcount % $i ) == 0 and $msgcount ) {
322 elsif ( $msgsize > $j ) {
331 $msgsize = length $msg;
334 $conn->privmsg( $nick, $msg );
337 # Usage: &action(nick || chan, txt);
339 my $mynick = $conn->nick();
340 my ( $target, $txt ) = @_;
341 if ( !defined $txt ) {
342 &WARN('action: txt == NULL.');
346 if ( &getChanConf( 'silent', $target )
347 and not( &IsFlag('s') and &verifyUser( $who, $nuh{ lc $who } ) ) )
349 &DEBUG("action: silent in $target, not doing $txt");
353 if ( length $txt > 480 ) {
354 &status('action: txt too long; truncating.');
355 chop($txt) while ( length $txt > 480 );
358 &status("* $mynick/$target $txt");
359 $conn->me( $target, $txt );
362 # Usage: ¬ice(nick || chan, txt);
364 my ( $target, $txt ) = @_;
365 if ( !defined $txt ) {
366 &WARN('notice: txt == NULL.');
370 &status("-$target- $txt");
374 if ( $t == $nottime ) {
376 $notsize += length $txt;
378 my $i = &getChanConfDefault( 'sendNoticeLimitLines', 3, $chan );
379 my $j = &getChanConfDefault( 'sendNoticeLimitBytes', 1000, $chan );
381 if ( ( $notcount % $i ) == 0 and $notcount ) {
384 elsif ( $notsize > $j ) {
393 $notsize = length $txt;
396 $conn->notice( $target, $txt );
400 my ( $txt, $flag ) = @_;
402 ### FIXME: flag not supported yet.
404 foreach ( keys %{ $dcc{'CHAT'} } ) {
405 $conn->privmsg( $dcc{'CHAT'}{$_}, $txt );
410 ### perform commands.
413 # Usage: &performReply($reply);
417 if ( !defined $reply or $reply =~ /^\s*$/ ) {
418 &DEBUG('performReply: reply == NULL.');
422 $reply =~ /([\.\?\s]+)$/;
424 # FIXME need real throttling....
425 if ( length($reply) > $maxlinelen - 30 ) {
426 $reply = substr( $reply, 0, $maxlinelen - 33 );
427 $reply =~ s/ [^ ]*?$/ .../;
429 &checkMsgType($reply);
431 if ( $msgType eq 'public' ) {
432 if ( rand() < 0.5 or $reply =~ /[\.\?]$/ ) {
433 $reply = "$orig{who}: " . $reply;
436 $reply = "$reply, " . $orig{who};
441 elsif ( $msgType eq 'private' ) {
442 if ( rand() > 0.5 ) {
443 $reply = "$reply, " . $orig{who};
445 &msg( $who, $reply );
448 elsif ( $msgType eq 'chat' ) {
449 if ( !exists $dcc{'CHAT'}{$who} ) {
450 &VERB( "pSR: dcc{'CHAT'}{$who} does not exist.", 2 );
453 $conn->privmsg( $dcc{'CHAT'}{$who}, $reply );
457 &ERROR("PR: msgType invalid? ($msgType).");
462 sub performAddressedReply {
463 return unless ($addressed);
467 # Usage: &performStrictReply($reply);
468 sub performStrictReply {
471 # FIXME need real throttling....
472 if ( length($reply) > $maxlinelen - 30 ) {
473 $reply = substr( $reply, 0, $maxlinelen - 33 );
474 $reply =~ s/ [^ ]*?$/ .../;
476 &checkMsgType($reply);
478 if ( $msgType eq 'private' ) {
479 &msg( $who, $reply );
481 elsif ( $msgType eq 'public' ) {
484 elsif ( $msgType eq 'chat' ) {
485 &dccsay( lc $who, $reply );
488 &ERROR("pSR: msgType invalid? ($msgType).");
493 my ( $who, $reply ) = @_;
495 if ( !defined $reply or $reply =~ /^\s*$/ ) {
496 &WARN('dccsay: reply == NULL.');
500 if ( !exists $dcc{'CHAT'}{$who} ) {
501 &VERB( "pSR: dcc{'CHAT'}{$who} does not exist. (2)", 2 );
505 &status("=>$who<= $reply"); # dcc chat.
506 $conn->privmsg( $dcc{'CHAT'}{$who}, $reply );
513 foreach $type ( keys %dcc ) {
514 &FIXME("dcc_close: $who");
515 my @who = grep /^\Q$who\E$/i, keys %{ $dcc{$type} };
516 next unless ( scalar @who );
518 &DEBUG("dcc_close... close $who!");
523 my ( $chan, $key ) = @_;
524 $key ||= &getChanConf( 'chankey', $chan );
526 my $mynick = $conn->nick();
528 # forgot for about 2 years to implement channel keys when moving
529 # over to Net::IRC...
531 # hopefully validChan is right.
532 if ( &validChan($chan) ) {
533 &status("join: already on $chan?");
537 &status("$mynick joining $b_blue$chan $key$ob");
539 return if ( $conn->join( $chan, $key ) );
540 return if ( &validChan($chan) );
542 &DEBUG('joinchan: join failed. trying connect!');
553 next if ( $chan eq '' );
554 $chan =~ tr/A-Z/a-z/; # lowercase.
556 if ( $chan !~ /^$mask{chan}$/ ) {
557 &WARN("part: chan is invalid ($chan)");
561 &status("parting $chan");
562 if ( !&validChan($chan) ) {
563 &WARN("part: not on $chan; doing anyway");
570 # deletion of $channels{chan} is done in &entryEvt().
575 my ( $chan, @modes ) = @_;
576 my $modes = join( ' ', @modes );
578 if ( &validChan($chan) == 0 ) {
579 &ERROR("mode: invalid chan => '$chan'.");
583 &DEBUG("mode: MODE $chan $modes");
585 # should move to use Net::IRC's $conn->mode()... but too lazy.
586 rawout("MODE $chan $modes");
590 my ( $chan, @who ) = @_;
591 my $os = 'o' x scalar(@who);
593 &mode( $chan, "+$os @who" );
597 my ( $chan, @who ) = @_;
598 my $os = 'o' x scalar(@who);
600 &mode( $chan, "-$os " . @who );
604 my ( $nick, $chan, $msg ) = @_;
605 my (@chans) = ( $chan eq '' ) ? ( keys %channels ) : lc($chan);
606 my $mynick = $conn->nick();
608 if ( $chan ne '' and &validChan($chan) == 0 ) {
609 &ERROR("kick: invalid channel $chan.");
613 $nick =~ tr/A-Z/a-z/;
615 foreach $chan (@chans) {
616 if ( !&IsNickInChan( $nick, $chan ) ) {
617 &status("kick: $nick is not on $chan.") if ( scalar @chans == 1 );
621 if ( !exists $channels{$chan}{o}{$mynick} ) {
622 &status("kick: do not have ops on $chan :(");
626 &status("Kicking $nick from $chan.");
627 $conn->kick( $chan, $nick, $msg );
632 my ( $mask, $chan ) = @_;
633 my (@chans) = ( $chan =~ /^\*?$/ ) ? ( keys %channels ) : lc($chan);
634 my $mynick = $conn->nick();
637 if ( $chan !~ /^\*?$/ and &validChan($chan) == 0 ) {
638 &ERROR("ban: invalid channel $chan.");
642 foreach $chan (@chans) {
643 if ( !exists $channels{$chan}{o}{$mynick} ) {
644 &status("ban: do not have ops on $chan :(");
648 &status("Banning $mask from $chan.");
649 &rawout("MODE $chan +b $mask");
657 my ( $mask, $chan ) = @_;
658 my (@chans) = ( $chan =~ /^\*?$/ ) ? ( keys %channels ) : lc($chan);
659 my $mynick = $conn->nick();
662 &DEBUG("unban: mask = $mask, chan = @chans");
664 foreach $chan (@chans) {
665 if ( !exists $channels{$chan}{o}{$mynick} ) {
666 &status("unBan: do not have ops on $chan :(");
670 &status("Removed ban $mask from $chan.");
671 &rawout("MODE $chan -b $mask");
680 if ( defined $conn ) {
681 &status( 'QUIT ' . $conn->nick() . " has quit IRC ($quitmsg)" );
682 $conn->quit($quitmsg);
685 &WARN('quit: could not quit!');
691 my $mynick = $conn->nick();
693 if ( !defined $newnick ) {
694 &ERROR('nick: nick == NULL.');
698 if ( !defined $mynick ) {
699 &WARN('nick: mynick == NULL.');
704 $bad++ if ( exists $nuh{$newnick} );
705 $bad++ if ( &IsNickInAnyChan($newnick) );
708 &WARN( "Nick: not going to try to change from $mynick to $newnick. ["
712 # hrm... over time we lose track of our own nick.
716 if ( $newnick =~ /^$mask{nick}$/ ) {
717 &status("nick: Changing nick from $mynick to $newnick");
719 # ->nick() will NOT change cause we are using rawout?
720 &rawout("NICK $newnick");
723 &DEBUG("nick: failed... why oh why (mynick=$mynick, newnick=$newnick)");
728 my ( $who, $chan ) = @_;
730 # TODO: check if $who or $chan are invalid.
732 $conn->invite( $who, $chan );
736 # Channel related functions...
739 # Usage: &joinNextChan();
742 foreach ( sort keys %conns ) {
744 my $mynick = $conn->nick();
745 my @join = getJoinChans(1);
747 if ( scalar @join ) {
748 my $chan = shift @join;
751 if ( my $i = scalar @join ) {
752 &status("joinNextChan: $mynick $i chans to join.");
759 if ( exists $cache{joinTime} ) {
760 my $delta = time() - $cache{joinTime} - 5;
761 my $timestr = &Time2String($delta);
763 # FIXME: @join should be @in instead (hacked to 10)
764 #my $rate = sprintf('%.1f', $delta / @in);
765 my $rate = sprintf( '%.1f', $delta / 10 );
766 delete $cache{joinTime};
768 &status("time taken to join all chans: $timestr; rate: $rate sec/join");
771 # chanserv check: global channels, in case we missed one.
772 foreach ( &ChanConfList('chanServ_ops') ) {
777 # Usage: &getNickInChans($nick);
782 foreach ( keys %channels ) {
783 next unless ( grep /^\Q$nick\E$/i, keys %{ $channels{$_}{''} } );
790 # Usage: &getNicksInChan($chan);
795 return keys %{ $channels{$chan}{''} };
799 my ( $nick, $chan ) = @_;
801 $chan =~ tr/A-Z/a-z/; # not lowercase unfortunately.
803 if ( $chan =~ /^$/ ) {
804 &DEBUG('INIC: chan == NULL.');
808 if ( &validChan($chan) == 0 ) {
809 &ERROR("INIC: invalid channel $chan.");
813 if ( grep /^\Q$nick\E$/i, keys %{ $channels{$chan}{''} } ) {
817 foreach ( keys %channels ) {
818 next unless (/[A-Z]/);
819 &DEBUG('iNIC: hash channels contains mixed cased chan!!!');
825 sub IsNickInAnyChan {
829 foreach $chan ( keys %channels ) {
830 next unless ( grep /^\Q$nick\E$/i, keys %{ $channels{$chan}{''} } );
836 # Usage: &validChan($chan);
839 # TODO: use $c instead?
842 if ( !defined $chan or $chan =~ /^\s*$/ ) {
846 if ( lc $chan ne $chan ) {
847 &WARN("validChan: lc chan != chan. ($chan); fixing.");
848 $chan =~ tr/A-Z/a-z/;
851 # it's possible that this check creates the hash if empty.
852 if ( defined $channels{$chan} or exists $channels{$chan} ) {
853 if ( $chan =~ /^_?default$/ ) {
855 # &WARN('validC: chan cannot be _default! returning 0!');
867 # Usage: &delUserInfo($nick,@chans);
869 my ( $nick, @chans ) = @_;
872 foreach $chan (@chans) {
873 foreach $mode ( keys %{ $channels{$chan} } ) {
876 next unless ( exists $channels{$chan}{$mode}{$nick} );
878 delete $channels{$chan}{$mode}{$nick};
886 delete $channels{$chan};
893 $cache{joinTime} = time();
898 # $show should contain the min number of seconds between display
899 # of the Chans: status line. Use 0 to disable
906 # Display 'Chans:' only if more than $show seconds since last display
907 if ( time() - $lastChansTime > $show ) {
908 $lastChansTime = time();
911 $show = 0; # Don't display since < 15min since last
914 # can't join any if not connected
915 return @join if ( !$conn );
917 my $nick = $conn->nick();
919 foreach ( keys %chanconf ) {
920 next if ( $_ eq '_default' );
923 my $val = $chanconf{$_}{autojoin};
925 if ( defined $val ) {
926 $skip++ if ( $val eq '0' );
929 # convert old +autojoin to autojoin <nick>
931 $chanconf{$_}{autojoin} = $val;
933 $skip++ if ( lc $val ne lc $nick );
943 if ( defined $channels{$_} or exists $channels{$_} ) {
953 $str .= ' in:' . join( ',', sort @in ) if scalar @in;
954 $str .= ' skip:' . join( ',', sort @skip ) if scalar @skip;
955 $str .= ' join:' . join( ',', sort @join ) if scalar @join;
957 &status("Chans: ($nick)$str") if ($show);
964 # &DEBUG('closeDCC called.');
967 foreach $type ( keys %dcc ) {
968 next if ( $type ne uc($type) );
971 foreach $nick ( keys %{ $dcc{$type} } ) {
972 next unless ( defined $nick );
973 &status("DCC CHAT: closing DCC $type to $nick.");
974 next unless ( defined $dcc{$type}{$nick} );
976 my $ref = $dcc{$type}{$nick};
977 &dccsay( $nick, "bye bye, $nick" ) if ( $type =~ /^chat$/i );
978 $dcc{$type}{$nick}->close();
979 delete $dcc{$type}{$nick};
980 &DEBUG("after close for $nick");
987 my ( $who, $chan, $userhost ) = @_;
989 return unless ( &IsChanConf('joinfloodCheck') > 0 );
991 if ( exists $netsplit{ lc $who } ) { # netsplit join.
992 &DEBUG("joinfloodCheck: $who was in netsplit; not checking.");
995 if ( exists $floodjoin{$chan}{$who}{Time} ) {
996 &WARN("floodjoin{$chan}{$who} already exists?");
999 $floodjoin{$chan}{$who}{Time} = time();
1000 $floodjoin{$chan}{$who}{Host} = $userhost;
1003 foreach ( keys %floodjoin ) {
1005 my $count = scalar keys %{ $floodjoin{$c} };
1006 next unless ( $count > 5 );
1007 &DEBUG("joinflood: count => $count");
1010 foreach ( keys %{ $floodjoin{$c} } ) {
1011 my $t = $floodjoin{$c}{$_}{Time};
1012 next unless ( defined $t );
1016 &DEBUG("joinflood: time => $time");
1019 &DEBUG("joinflood: new time => $time");
1025 foreach $chan ( keys %floodjoin ) {
1026 foreach $who ( keys %{ $floodjoin{$chan} } ) {
1027 my $t = $floodjoin{$chan}{$who}{Time};
1028 next unless ( defined $t );
1030 my $delta = $time - $t;
1031 next unless ( $delta > 10 );
1033 delete $floodjoin{$chan}{$who};
1038 &DEBUG("joinfloodCheck: $delete deleted.") if ($delete);
1044 if ( exists $nuh{$n} ) {
1045 return &makeHostMask( $nuh{$n} );
1048 $cache{on_who_Hack} = 1;
1055 # vim:ts=4:sw=4:expandtab:tw=80