add 1702 prefix cty.dat data

[spider.git] / perl / DXCommandmode.pm

#!/usr/bin/perl
#
# This module impliments the user facing command mode for a dx cluster
#
# Copyright (c) 1998 Dirk Koopman G1TLH
#
# $Id$
# 

package DXCommandmode;

#use POSIX;

@ISA = qw(DXChannel);

use POSIX qw(:math_h);
use DXUtil;
use DXChannel;
use DXUser;
use DXVars;
use DXDebug;
use DXM;
use DXLog;
use DXLogPrint;
use DXBearing;
use CmdAlias;
use Filter;
use Minimuf;
use DXDb;
use AnnTalk;
use WCY;
use Sun;
use Internet;
use Script;
use Net::Telnet;
use QSL;
use DB_File;
use VE7CC;
use DXXml;

use strict;
use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase $maxerrors %nothereslug
        $maxbadcount $msgpolltime $default_pagelth $cmdimportdir);

%Cache = ();                                    # cache of dynamically loaded routine's mod times
%cmd_cache = ();                                # cache of short names
$errstr = ();                                   # error string from eval
%aliases = ();                                  # aliases for (parts of) commands
$scriptbase = "$main::root/scripts"; # the place where all users start scripts go
$maxerrors = 20;                                # the maximum number of concurrent errors allowed before disconnection
$maxbadcount = 3;                               # no of bad words allowed before disconnection
$msgpolltime = 3600;                    # the time between polls for new messages 
$cmdimportdir = "$main::root/cmd_import"; # the base directory for importing command scripts 
                                          # this does not exist as default, you need to create it manually
                                          #

use vars qw($VERSION $BRANCH);
$VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
$BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
$main::build += $VERSION;
$main::branch += $BRANCH;

#
# obtain a new connection this is derived from dxchannel
#

sub new 
{
        my $self = DXChannel::alloc(@_);

        # routing, this must go out here to prevent race condx
        my $pkg = shift;
        my $call = shift;
        my @rout = $main::routeroot->add_user($call, Route::here(1));

        # ALWAYS output the user
        my $ref = Route::User::get($call);
        $main::me->route_pc16($main::mycall, undef, $main::routeroot, $ref) if $ref;

        return $self;
}

# this is how a a connection starts, you get a hello message and the motd with
# possibly some other messages asking you to set various things up if you are
# new (or nearly new and slacking) user.

sub start
{ 
        my ($self, $line, $sort) = @_;
        my $user = $self->{user};
        my $call = $self->{call};
        my $name = $user->{name};
        
        # log it
        my $host = $self->{conn}->{peerhost};
        $host ||= "AGW Port #$self->{conn}->{agwport}" if exists $self->{conn}->{agwport};
        $host ||= "unknown";
        LogDbg('DXCommand', "$call connected from $host");

        $self->{name} = $name ? $name : $call;
        $self->send($self->msg('l2',$self->{name}));
        $self->state('prompt');         # a bit of room for further expansion, passwords etc
        $self->{priv} = $user->priv || 0;
        $self->{lang} = $user->lang || $main::lang || 'en';
        my $pagelth = $user->pagelth;
        $pagelth = $default_pagelth unless defined $pagelth;
        $self->{pagelth} = $pagelth;
        ($self->{width}) = $line =~ /width=(\d+)/; $line =~ s/\s*width=\d+\s*//;
        $self->{width} = 80 unless $self->{width} && $self->{width} > 80;
        $self->{consort} = $line;       # save the connection type
        
        # set some necessary flags on the user if they are connecting
        $self->{beep} = $user->wantbeep;
        $self->{ann} = $user->wantann;
        $self->{wwv} = $user->wantwwv;
        $self->{wcy} = $user->wantwcy;
        $self->{talk} = $user->wanttalk;
        $self->{wx} = $user->wantwx;
        $self->{dx} = $user->wantdx;
        $self->{logininfo} = $user->wantlogininfo;
        $self->{ann_talk} = $user->wantann_talk;
        $self->{here} = 1;
        $self->{prompt} = $user->prompt if $user->prompt;

        # sort out new dx spot stuff
        $user->wantdxcq(0) unless defined $user->{wantdxcq};
        $user->wantdxitu(0) unless defined $user->{wantdxitu};  
        $user->wantusstate(0) unless defined $user->{wantusstate};

        # sort out registration
        if ($main::reqreg == 1) {
                $self->{registered} = $user->registered;
        } elsif ($main::reqreg == 2) {
                $self->{registered} = !$user->registered;
        } else {
                $self->{registered} = 1;
        }


        # decide which motd to send
        my $motd;
        unless ($self->{registered}) {
                $motd = "${main::motd}_nor_$self->{lang}";
                $motd = "${main::motd}_nor" unless -e $motd;
        }
        $motd = "${main::motd}_$self->{lang}" unless $motd && -e $motd;
        $motd = $main::motd unless $motd && -e $motd;
        $self->send_file($motd) if -e $motd;

        # sort out privilege reduction
        $self->{priv} = 0 if $line =~ /^(ax|te)/ && !$self->conn->{usedpasswd};

        # get the filters
        my $nossid = $call;
        $nossid =~ s/-\d+$//;
        
        $self->{spotsfilter} = Filter::read_in('spots', $call, 0) 
                || Filter::read_in('spots', $nossid, 0)
                        || Filter::read_in('spots', 'user_default', 0);
        $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) 
                || Filter::read_in('wwv', $nossid, 0) 
                        || Filter::read_in('wwv', 'user_default', 0);
        $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) 
                || Filter::read_in('wcy', $nossid, 0) 
                        || Filter::read_in('wcy', 'user_default', 0);
        $self->{annfilter} = Filter::read_in('ann', $call, 0) 
                || Filter::read_in('ann', $nossid, 0) 
                        || Filter::read_in('ann', 'user_default', 0) ;

        # clean up qra locators
        my $qra = $user->qra;
        $qra = undef if ($qra && !DXBearing::is_qra($qra));
        unless ($qra) {
                my $lat = $user->lat;
                my $long = $user->long;
                $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);  
        }

        # decide on echo
        my $echo = $user->wantecho;
        unless ($echo) {
                $self->send_now('E', "0");
                $self->send($self->msg('echow'));
                $self->conn->echo($echo) if $self->conn->can('echo');
        }
        
        $self->tell_login('loginu');
        $self->tell_buddies('loginb');
        
        # do we need to send a forward/opernam?
        my $lastoper = $user->lastoper || 0;
        my $homenode = $user->homenode || ""; 
        if ($homenode eq $main::mycall && $main::systime >= $lastoper + $DXUser::lastoperinterval) {
                run_cmd($main::me, "forward/opernam $call");
                $user->lastoper($main::systime + ((int rand(10)) * 86400));
        }

        # run a script send the output to the punter
        my $script = new Script(lc $call) || new Script('user_default');
        $script->run($self) if $script;

        # send cluster info
        my $info = Route::cluster();
        $self->send("Cluster:$info");

        # send prompts for qth, name and things
        $self->send($self->msg('namee1')) if !$user->name;
        $self->send($self->msg('qthe1')) if !$user->qth;
        $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
        $self->send($self->msg('hnodee1')) if !$user->qth;
        $self->send($self->msg('m9')) if DXMsg::for_me($call);

        # send out any buddy messages for other people that are online
        foreach my $call (@{$user->buddies}) {
                my $ref = Route::User::get($call);
                if ($ref) {
                        foreach my $node (@{$ref->parent}) {
                                $self->send($self->msg($node eq $main::mycall ? 'loginb' : 'loginbn', $call, $node));
                        } 
                }
        }

        $self->lastmsgpoll($main::systime);
        $self->prompt;
}

#
# This is the normal command prompt driver
#

sub normal
{
        my $self = shift;
        my $cmdline = shift;
        my @ans;

        # save this for them's that need it
        my $rawline = $cmdline;
        
        # remove leading and trailing spaces
        $cmdline =~ s/^\s*(.*)\s*$/$1/;
        
        if ($self->{state} eq 'page') {
                my $i = $self->{pagelth};
                my $ref = $self->{pagedata};
                my $tot = @$ref;
                
                # abort if we get a line starting in with a
                if ($cmdline =~ /^a/io) {
                        undef $ref;
                        $i = 0;
                }
        
                # send a tranche of data
                while ($i-- > 0 && @$ref) {
                        my $line = shift @$ref;
                        $line =~ s/\s+$//o;     # why am having to do this? 
                        $self->send($line);
                }
                
                # reset state if none or else chuck out an intermediate prompt
                if ($ref && @$ref) {
                        $tot -= $self->{pagelth};
                        $self->send($self->msg('page', $tot));
                } else {
                        $self->state('prompt');
                }
        } elsif ($self->{state} eq 'sysop') {
                my $passwd = $self->{user}->passwd;
                if ($passwd) {
                        my @pw = grep {$_ !~ /\s/} split //, $passwd;
                        my @l = @{$self->{passwd}};
                        my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
                        if ($cmdline =~ /$str/) {
                                $self->{priv} = $self->{user}->priv;
                        } else {
                                $self->send($self->msg('sorry'));
                        }
                } else {
                        $self->send($self->msg('sorry'));
                }
                $self->state('prompt');
        } elsif ($self->{state} eq 'passwd') {
                my $passwd = $self->{user}->passwd;
                if ($passwd && $cmdline eq $passwd) {
                        $self->send($self->msg('pw1'));
                        $self->state('passwd1');
                } else {
                        $self->conn->{echo} = $self->conn->{decho};
                        delete $self->conn->{decho};
                        $self->send($self->msg('sorry'));
                        $self->state('prompt');
                }
        } elsif ($self->{state} eq 'passwd1') {
                $self->{passwd} = $cmdline;
                $self->send($self->msg('pw2'));
                $self->state('passwd2');
        } elsif ($self->{state} eq 'passwd2') {
                if ($cmdline eq $self->{passwd}) {
                        $self->{user}->passwd($cmdline);
                        $self->send($self->msg('pw3'));
                } else {
                        $self->send($self->msg('pw4'));
                }
                $self->conn->{echo} = $self->conn->{decho};
                delete $self->conn->{decho};
                $self->state('prompt');
        } elsif ($self->{state} eq 'talk') {
                if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
                        for (@{$self->{talklist}}) {
                                $self->send_talks($_,  $self->msg('talkend'));
                        }
                        $self->state('prompt');
                        delete $self->{talklist};
                } elsif ($cmdline =~ m|^/+\w+|) {
                        $cmdline =~ s|^/||;
                        my $sendit = $cmdline =~ s|^/+||;
                        my @in = $self->run_cmd($cmdline);
                        $self->send_ans(@in);
                        if ($sendit && $self->{talklist} && @{$self->{talklist}}) {
                                foreach my $l (@in) {
                                        my @bad;
                                        if (@bad = BadWords::check($l)) {
                                                $self->badcount(($self->badcount||0) + @bad);
                                                LogDbg('DXCommand', "$self->{call} swore: $l with words:" . join(',', @bad) . ")");
                                        } else {
                                                for (@{$self->{talklist}}) {
                                                        $self->send_talks($_, $l);
                                                }
                                        }
                                }
                        }
                        $self->send($self->talk_prompt);
                } elsif ($self->{talklist} && @{$self->{talklist}}) {
                        # send what has been said to whoever is in this person's talk list
                        my @bad;
                        if (@bad = BadWords::check($cmdline)) {
                                $self->badcount(($self->badcount||0) + @bad);
                                LogDbg('DXCommand', "$self->{call} swore: $cmdline with words:" . join(',', @bad) . ")");
                        } else {
                                for (@{$self->{talklist}}) {
                                        $self->send_talks($_, $rawline);
                                }
                        }
                        $self->send($self->talk_prompt) if $self->{state} eq 'talk';
                } else {
                        # for safety
                        $self->state('prompt');
                }
        } elsif (my $func = $self->{func}) {
                no strict 'refs';
                my @ans;
                if (ref $self->{edit}) {
                        eval { @ans = $self->{edit}->$func($self, $rawline)};
                } else {
                        eval {  @ans = &{$self->{func}}($self, $rawline) };
                }
                if ($@) {
                        $self->send_ans("Syserr: on stored func $self->{func}", $@);
                        delete $self->{func};
                        $self->state('prompt');
                        undef $@;
                }
                $self->send_ans(@ans);
        } else {
                $self->send_ans(run_cmd($self, $cmdline));
        } 

        # check for excessive swearing
        if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
                LogDbg('DXCommand', "$self->{call} logged out for excessive swearing");
                $self->disconnect;
                return;
        }

        # send a prompt only if we are in a prompt state
        $self->prompt() if $self->{state} =~ /^prompt/o;
}

# send out the talk messages taking into account vias and connectivity
sub send_talks
{
        my ($self, $ent, $line) = @_;
        
        my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
        $to = $ent unless $to;
        my $call = $via ? $via : $to;
        my $clref = Route::get($call);
        my $dxchan = $clref->dxchan if $clref;
        if ($dxchan) {
                $dxchan->talk($self->{call}, $to, $via, $line);
        } else {
                $self->send($self->msg('disc2', $via ? $via : $to));
                my @l = grep { $_ ne $ent } @{$self->{talklist}};
                if (@l) {
                        $self->{talklist} = \@l;
                } else {
                        delete $self->{talklist};
                        $self->state('prompt');
                }
        }
}

sub talk_prompt
{
        my $self = shift;
        my @call;
        for (@{$self->{talklist}}) {
                my ($to, $via) = /(\S+)>(\S+)/;
                $to = $_ unless $to;
                push @call, $to;
        }
        return $self->msg('talkprompt', join(',', @call));
}

#
# send a load of stuff to a command user with page prompting
# and stuff
#

sub send_ans
{
        my $self = shift;
        
        if ($self->{pagelth} && @_ > $self->{pagelth}) {
                my $i;
                for ($i = $self->{pagelth}; $i-- > 0; ) {
                        my $line = shift @_;
                        $line =~ s/\s+$//o;     # why am having to do this? 
                        $self->send($line);
                }
                $self->{pagedata} =  [ @_ ];
                $self->state('page');
                $self->send($self->msg('page', scalar @_));
        } else {
                for (@_) {
                        if (defined $_) {
                                $self->send($_);
                        } else {
                                $self->send('');
                        }
                }
        } 
}
# 
# this is the thing that runs the command, it is done like this for the 
# benefit of remote command execution
#

sub run_cmd
{
        my $self = shift;
        my $user = $self->{user};
        my $call = $self->{call};
        my $cmdline = shift;
        my @ans;
        

        return () if length $cmdline == 0;
        
        
        # split the command line up into parts, the first part is the command
        my ($cmd, $args) = split /\s+/, $cmdline, 2;
        $args = "" unless defined $args;
                
        if ($cmd) {
                # strip out // on command only
                $cmd =~ s|//|/|g;
                $cmd =~ s|^/||g;                # no leading / either
                $cmd =~ s|[^-?\w/]||g;          # and no funny characters either
                                        
                my ($path, $fcmd);
                        
                dbg("cmd: $cmd") if isdbg('command');
                        
                # alias it if possible
                my $acmd = CmdAlias::get_cmd($cmd);
                if ($acmd) {
                        ($cmd, $args) = split /\s+/, "$acmd $args", 2;
                        $args = "" unless defined $args;
                        dbg("aliased cmd: $cmd $args") if isdbg('command');
                }
                        
                # first expand out the entry to a command
                ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
                ($path, $fcmd) = search($main::cmd, $cmd, "pl") unless $path && $fcmd;

                if ($path && $cmd) {
                        dbg("path: $cmd cmd: $fcmd") if isdbg('command');
                        
                        my $package = find_cmd_name($path, $fcmd);
                        return ($@) if $@;
                                
                        if ($package) {
                                no strict 'refs';
                                dbg("package: $package") if isdbg('command');
                                eval { @ans = &$package($self, $args) };
                                return (DXDebug::shortmess($@)) if $@;
                        }
                } else {
                        dbg("cmd: $cmd not found") if isdbg('command');
                        if (++$self->{errors} > $maxerrors) {
                                $self->send($self->msg('e26'));
                                $self->disconnect;
                                return ();
                        } else {
                                return ($self->msg('e1'));
                        }
                }
        }
        
        my $ok = shift @ans;
        if ($ok) {
                delete $self->{errors};
        } else {
                if (++$self->{errors} > $maxerrors) {
                        $self->send($self->msg('e26'));
                        $self->disconnect;
                        return ();
                }
        }
        return map {s/([^\s])\s+$/$1/; $_} @ans;
}

#
# This is called from inside the main cluster processing loop and is used
# for despatching commands that are doing some long processing job
#
sub process
{
        my $t = time;
        my @dxchan = DXChannel::get_all();
        my $dxchan;
        
        foreach $dxchan (@dxchan) {
                next if $dxchan->sort ne 'U';  
        
                # send a outstanding message prompt if required
                if ($t >= $dxchan->lastmsgpoll + $msgpolltime) {
                        $dxchan->send($dxchan->msg('m9')) if DXMsg::for_me($dxchan->call);
                        $dxchan->lastmsgpoll($t);
                }
                
                # send a prompt if no activity out on this channel
                if ($t >= $dxchan->t + $main::user_interval) {
                        $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
                        $dxchan->t($t);
                }
        }

        while (my ($k, $v) = each %nothereslug) {
                if ($main::systime >= $v + 300) {
                        delete $nothereslug{$k};
                }
        }

        import_cmd();
}

#
# finish up a user context
#
sub disconnect
{
        my $self = shift;
        my $call = $self->call;

        return if $self->{disconnecting}++;

        delete $self->{senddbg};

        my $uref = Route::User::get($call);
        my @rout;
        if ($uref) {
                @rout = $main::routeroot->del_user($uref);
                dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');

                # issue a pc17 to everybody interested
                $main::me->route_pc17($main::mycall, undef, $main::routeroot, $uref);
        } else {
                confess "trying to disconnect a non existant user $call";
        }

        # I was the last node visited
    $self->user->node($main::mycall);
                
        # send info to all logged in thingies
        $self->tell_login('logoutu');
        $self->tell_buddies('logoutb');

        LogDbg('DXCommand', "$call disconnected");

        $self->SUPER::disconnect;
}

#
# short cut to output a prompt
#

sub prompt
{
        my $self = shift;

        return if $self->{gtk};         # 'cos prompts are not a concept that applies here
        
        my $call = $self->call;
        my $date = cldate($main::systime);
        my $time = ztime($main::systime);
        my $prompt = $self->{prompt} || $self->msg('pr');

        $call = "($call)" unless $self->here;
        $prompt =~ s/\%C/$call/g;
        $prompt =~ s/\%D/$date/g;
        $prompt =~ s/\%T/$time/g;
        $prompt =~ s/\%M/$main::mycall/g;
        
        $self->send($prompt);
}

# broadcast a message to all users [except those mentioned after buffer]
sub broadcast
{
        my $pkg = shift;                        # ignored
        my $s = shift;                          # the line to be rebroadcast
        
    foreach my $dxchan (DXChannel::get_all()) {
                next unless $dxchan->{sort} eq 'U'; # only interested in user channels  
                next if grep $dxchan == $_, @_;
                $dxchan->send($s);                      # send it
        }
}

# gimme all the users
sub get_all
{
        return grep {$_->{sort} eq 'U'} DXChannel::get_all();
}

# run a script for this user
sub run_script
{
        my $self = shift;
        my $silent = shift || 0;
        
}

#
# search for the command in the cache of short->long form commands
#

sub search
{
        my ($path, $short_cmd, $suffix) = @_;
        my ($apath, $acmd);
        
        # commands are lower case
        $short_cmd = lc $short_cmd;
        dbg("command: $path $short_cmd\n") if isdbg('command');

        # do some checking for funny characters
        return () if $short_cmd =~ /\/$/;

        # return immediately if we have it
        ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
        if ($apath && $acmd) {
                dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
                return ($apath, $acmd);
        }
        
        # if not guess
        my @parts = split '/', $short_cmd;
        my $dirfn;
        my $curdir = $path;
        
        while (my $p = shift @parts) {
                opendir(D, $curdir) or confess "can't open $curdir $!";
                my @ls = readdir D;
                closedir D;

                # if this isn't the last part
                if (@parts) {
                        my $found;
                        foreach my $l (sort @ls) {
                                next if $l =~ /^\./;
                                if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
                                        dbg("got dir: $curdir/$l\n") if isdbg('command');
                                        $dirfn .= "$l/";
                                        $curdir .= "/$l";
                                        $found++;
                                        last;
                                }
                        }
                        # only proceed if we find the directory asked for
                        return () unless $found;
                } else {
                        foreach my $l (sort @ls) {
                                next if $l =~ /^\./;
                                next unless $l =~ /\.$suffix$/;
                                if ($p eq substr($l, 0, length $p)) {
                                        $l =~ s/\.$suffix$//;
                                        $dirfn = "" unless $dirfn;
                                        $cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
                                        dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
                                        return ($path, "$dirfn$l");
                                }
                        }
                }
        }

        return ();  
}  

# clear the command name cache
sub clear_cmd_cache
{
        no strict 'refs';
        
        for (keys %Cache) {
                undef *{$_} unless /cmd_cache/;
                dbg("Undefining cmd $_") if isdbg('command');
        }
        %cmd_cache = ();
        %Cache = ();
}

#
# the persistant execution of things from the command directories
#
#
# This allows perl programs to call functions dynamically
# 
# This has been nicked directly from the perlembed pages
#

#require Devel::Symdump;  

sub valid_package_name {
        my($string) = @_;
        $string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
        
        $string =~ s|/|_|g;
        return "cmd_$string";
}

# 
# this bit of magic finds a command in the offered directory
sub find_cmd_name {
        my $path = shift;
        my $cmdname = shift;
        my $package = valid_package_name($cmdname);
        my $filename = "$path/$cmdname.pl";
        my $mtime = -M $filename;
        
        # return if we can't find it
        $errstr = undef;
        unless (defined $mtime) {
                $errstr = DXM::msg('e1');
                return undef;
        }
        
        if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
                #we have compiled this subroutine already,
                #it has not been updated on disk, nothing left to do
                #print STDERR "already compiled $package->handler\n";
                ;
        } else {

                my $sub = readfilestr($filename);
                unless ($sub) {
                        $errstr = "Syserr: can't open '$filename' $!";
                        return undef;
                };
                
                #wrap the code into a subroutine inside our unique package
                my $eval = qq( sub $package { $sub } );
                
                if (isdbg('eval')) {
                        my @list = split /\n/, $eval;
                        my $line;
                        for (@list) {
                                dbg($_ . "\n") if isdbg('eval');
                        }
                }
                
                # get rid of any existing sub and try to compile the new one
                no strict 'refs';

                if (exists $Cache{$package}) {
                        dbg("Redefining $package") if isdbg('command');
                        undef *$package;
                } else {
                        dbg("Defining $package") if isdbg('command');
                }
                eval $eval;
                
                $Cache{$package} = {mtime => $mtime };
            
        }

        return $package;
}

sub send
{
        my $self = shift;
        if ($self->{gtk}) {
                for (@_) {
                        $self->SUPER::send(dd(['cmd',$_]));
                }
        } else {
                $self->SUPER::send(@_);
        }
}

sub local_send
{
        my ($self, $let, $buf) = @_;
        if ($self->{state} eq 'prompt' || $self->{state} eq 'talk') {
                if ($self->{enhanced}) {
                        $self->send_later($let, $buf);
                } else {
                        $self->send($buf);
                }
        } else {
                $self->delay($buf);
        }
}

# send a talk message here
sub talk
{
        my ($self, $from, $to, $via, $line) = @_;
        $line =~ s/\\5E/\^/g;
        if ($self->{talk}) {
                if ($self->{gtk}) {
                        $self->local_send('T', dd(['talk',$to,$from,$via,$line]));
                } else {
                        $self->local_send('T', "$to de $from: $line");
                }
        }
        Log('talk', $to, $from, $via?$via:$main::mycall, $line);
        # send a 'not here' message if required
        unless ($self->{here} && $from ne $to) {
                my $key = "$to$from";
                unless (exists $nothereslug{$key}) {
                        my ($ref, $dxchan);
                        if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
                                my $name = $self->user->name || $to;
                                my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
                                $nothereslug{$key} = $main::systime;
                                $dxchan->talk($to, $from, undef, $s);
                        }
                }
        }
}

# send an announce
sub announce
{
        my $self = shift;
        my $line = shift;
        my $isolate = shift;
        my $to = shift;
        my $target = shift;
        my $text = shift;
        my ($filter, $hops);

        if (!$self->{ann_talk} && $to ne $self->{call}) {
                my $call = AnnTalk::is_talk_candidate($_[0], $text);
                return if $call;
        }

        if ($self->{annfilter}) {
                ($filter, $hops) = $self->{annfilter}->it(@_ );
                return unless $filter;
        }

        unless ($self->{ann}) {
                return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
        }
        return if $target eq 'SYSOP' && $self->{priv} < 5;
        my $buf;
        if ($self->{gtk}) {
                $buf = dd(['ann', $to, $target, $text, @_])
        } else {
                $buf = "$to$target de $_[0]: $text";
                $buf =~ s/\%5E/^/g;
                $buf .= "\a\a" if $self->{beep};
        }
        $self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
}

# send a chat
sub chat
{
        my $self = shift;
        my $line = shift;
        my $isolate = shift;
        my $target = shift;
        my $to = shift;
        my $text = shift;
        my ($filter, $hops);

        return unless grep uc $_ eq $target, @{$self->{user}->{group}};
        
        $text =~ s/^\#\d+ //;
        my $buf;
        if ($self->{gtk}) {
                $buf = dd(['chat', $to, $target, $text, @_])
        } else {
                $buf = "$target de $_[0]: $text";
                $buf =~ s/\%5E/^/g;
                $buf .= "\a\a" if $self->{beep};
        }
        $self->local_send('C', $buf);
}

sub format_dx_spot
{
        my $self = shift;

        my $t = ztime($_[2]);
        my $loc = '';
        my $clth = $self->{consort} eq 'local' ? 29 : 30;
        my $comment = substr $_[3], 0, $clth; 
        $comment .= ' ' x ($clth - length($comment));
        if ($self->{user}->wantgrid) { 
                my $ref = DXUser->get_current($_[4]);
                if ($ref) {
                        $loc = $ref->qra || '';
                        $loc = ' ' . substr($loc, 0, 4) if $loc;
                }
        }

        if ($self->{user}->wantdxitu) {
                $loc = ' ' . sprintf("%2d", $_[10]) if defined $_[10];
                $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[8]) if defined $_[8]; 
        } elsif ($self->{user}->wantdxcq) {
                $loc = ' ' . sprintf("%2d", $_[11]) if defined $_[11];
                $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[9]) if defined $_[9]; 
        } elsif ($self->{user}->wantusstate) {
                $loc = ' ' . $_[13] if $_[13];
                $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . $_[12] if $_[12]; 
        }

        return sprintf "DX de %-7.7s%11.1f  %-12.12s %-s $t$loc", "$_[4]:", $_[0], $_[1], $comment;
}

# send a dx spot
sub dx_spot
{
        my $self = shift;
        my $line = shift;
        my $isolate = shift;
        return unless $self->{dx};

        my ($filter, $hops);

        if ($self->{spotsfilter}) {
                ($filter, $hops) = $self->{spotsfilter}->it(@_ );
                return unless $filter;
        }

        dbg('spot: "' . join('","', @_) . '"') if isdbg('dxspot');

        my $buf;
        if ($self->{ve7cc}) {
                $buf = VE7CC::dx_spot($self, @_);
        } elsif ($self->{gtk}) {
                my ($dxloc, $byloc);

                my $ref = DXUser->get_current($_[4]);
                if ($ref) {
                        $byloc = $ref->qra;
                        $byloc = substr($byloc, 0, 4) if $byloc;
                }

                my $spot = $_[1];
                $spot =~ s|/\w{1,4}$||;
                $ref = DXUser->get_current($spot);
                if ($ref) {
                        $dxloc = $ref->qra;
                        $dxloc = substr($dxloc, 0, 4) if $dxloc;
                }
                $buf = dd(['dx', @_, ($dxloc||''), ($byloc||'')]);
                
        } else {
                $buf = $self->format_dx_spot(@_);
                $buf .= "\a\a" if $self->{beep};
                $buf =~ s/\%5E/^/g;
        }

        $self->local_send('X', $buf);
}

sub wwv
{
        my $self = shift;
        my $line = shift;
        my $isolate = shift;
        my ($filter, $hops);

        return unless $self->{wwv};
        
        if ($self->{wwvfilter}) {
                ($filter, $hops) = $self->{wwvfilter}->it(@_[7..$#_] );
                return unless $filter;
        }

        my $buf;
        if ($self->{gtk}) {
                $buf = dd(['wwv', @_])
        } else {
                $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
                $buf .= "\a\a" if $self->{beep};
        }
        
        $self->local_send('V', $buf);
}

sub wcy
{
        my $self = shift;
        my $line = shift;
        my $isolate = shift;
        my ($filter, $hops);

        return unless $self->{wcy};
        
        if ($self->{wcyfilter}) {
                ($filter, $hops) = $self->{wcyfilter}->it(@_ );
                return unless $filter;
        }

        my $buf;
        if ($self->{gtk}) {
                $buf = dd(['wcy', @_])
        } else {
                $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
                $buf .= "\a\a" if $self->{beep};
        }
        $self->local_send('Y', $buf);
}

# broadcast debug stuff to all interested parties
sub broadcast_debug
{
        my $s = shift;                          # the line to be rebroadcast
        
        foreach my $dxchan (DXChannel::get_all) {
                next unless $dxchan->{enhanced} && $dxchan->{senddbg};
                if ($dxchan->{gtk}) {
                        $dxchan->send_later('L', dd(['db', $s]));
                } else {
                        $dxchan->send_later('L', $s);
                }
        }
}

sub do_entry_stuff
{
        my $self = shift;
        my $line = shift;
        my @out;
        
        if ($self->state eq 'enterbody') {
                my $loc = $self->{loc} || confess "local var gone missing" ;
                if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
                        no strict 'refs';
                        push @out, &{$loc->{endaction}}($self);          # like this for < 5.8.0
                        $self->func(undef);
                        $self->state('prompt');
                } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
                        push @out, $self->msg('m10');
                        delete $loc->{lines};
                        delete $self->{loc};
                        $self->func(undef);
                        $self->state('prompt');
                } else {
                        push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
                        # i.e. it ain't and end or abort, therefore store the line
                }
        } else {
                confess "Invalid state $self->{state}";
        }
        return @out;
}

sub store_startup_script
{
        my $self = shift;
        my $loc = $self->{loc} || confess "local var gone missing" ;
        my @out;
        my $call = $loc->{call} || confess "callsign gone missing";
        confess "lines array gone missing" unless ref $loc->{lines};
        my $r = Script::store($call, $loc->{lines});
        if (defined $r) {
                if ($r) {
                        push @out, $self->msg('m19', $call, $r);
                } else {
                        push @out, $self->msg('m20', $call);
                }
        } else {
                push @out, "error opening startup script $call $!";
        } 
        return @out;
}

# Import any commands contained in any files in import_cmd directory
#
# If the filename has a recogisable callsign as some delimited part
# of it, then this is the user the command will be run as. 
#
sub import_cmd
{
        # are there any to do in this directory?
        return unless -d $cmdimportdir;
        unless (opendir(DIR, $cmdimportdir)) {
                LogDbg('err', "can\'t open $cmdimportdir $!");
                return;
        } 

        my @names = readdir(DIR);
        closedir(DIR);
        my $name;
        foreach $name (@names) {
                next if $name =~ /^\./;

                my $s = Script->new($name, $cmdimportdir);
                if ($s) {
                        LogDbg('DXCommand', "Run import cmd file $name");
                        my @cat = split /[^A-Za-z0-9]+/, $name;
                        my ($call) = grep {is_callsign(uc $_)} @cat;
                        $call ||= $main::mycall;
                        $call = uc $call;
                        my @out;
                        
                        
                        $s->inscript(0);        # switch off script checks
                        
                        if ($call eq $main::mycall) {
                                @out = $s->run($main::me, 1);
                        } else {
                                my $dxchan = DXChannel::get($call);
                            if ($dxchan) {
                                        @out = $s->run($dxchan, 1);
                                } else {
                                        my $u = DXUser->get($call);
                                        if ($u) {
                                                $dxchan = $main::me;
                                                my $old = $dxchan->{call};
                                                my $priv = $dxchan->{priv};
                                                my $user = $dxchan->{user};
                                                $dxchan->{call} = $call;
                                                $dxchan->{priv} = $u->priv;
                                                $dxchan->{user} = $u;
                                                @out = $s->run($dxchan, 1);
                                                $dxchan->{call} = $call;
                                                $dxchan->{priv} = $priv;
                                                $dxchan->{user} = $user;
                                        } else {
                                                LogDbg('err', "Trying to run import cmd for non-existant user $call");
                                        }
                                }
                        }
                        $s->erase;
                        for (@out) {
                                LogDbg('DXCommand', "Import cmd $name/$call: $_");
                        }
                } else {
                        LogDbg('err', "Failed to open $cmdimportdir/$name $!");
                        unlink "$cmdimportdir/$name";
                }
        }
}
1;
__END__