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1 #!/usr/bin/perl
2 #
3 # This module impliments the user facing command mode for a dx cluster
4 #
5 # Copyright (c) 1998 Dirk Koopman G1TLH
6 #
7 #
8
9
10 package DXCommandmode;
11
12 #use POSIX;
13
14 @ISA = qw(DXChannel);
15
16 use POSIX qw(:math_h);
17 use DXUtil;
18 use DXChannel;
19 use DXUser;
20 use DXVars;
21 use DXDebug;
22 use DXM;
23 use DXLog;
24 use DXLogPrint;
25 use DXBearing;
26 use CmdAlias;
27 use Filter;
28 use Minimuf;
29 use DXDb;
30 use AnnTalk;
31 use WCY;
32 use Sun;
33 use Internet;
34 use Script;
35 use Net::Telnet;
36 use QSL;
37 use DB_File;
38 use VE7CC;
39 use DXXml;
40
41 use strict;
42 use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase $maxerrors %nothereslug
43         $maxbadcount $msgpolltime $default_pagelth $cmdimportdir);
44
45 %Cache = ();                                    # cache of dynamically loaded routine's mod times
46 %cmd_cache = ();                                # cache of short names
47 $errstr = ();                                   # error string from eval
48 %aliases = ();                                  # aliases for (parts of) commands
49 $scriptbase = "$main::root/scripts"; # the place where all users start scripts go
50 $maxerrors = 20;                                # the maximum number of concurrent errors allowed before disconnection
51 $maxbadcount = 3;                               # no of bad words allowed before disconnection
52 $msgpolltime = 3600;                    # the time between polls for new messages 
53 $cmdimportdir = "$main::root/cmd_import"; # the base directory for importing command scripts 
54                                           # this does not exist as default, you need to create it manually
55                                           #
56
57 #
58 # obtain a new connection this is derived from dxchannel
59 #
60
61 sub new 
62 {
63         my $self = DXChannel::alloc(@_);
64
65         # routing, this must go out here to prevent race condx
66         my $pkg = shift;
67         my $call = shift;
68 #       my @rout = $main::routeroot->add_user($call, Route::here(1));
69         DXProt::_add_thingy($main::routeroot, [$call, 0, 0, 1]);
70
71         # ALWAYS output the user
72         my $ref = Route::User::get($call);
73         if ($ref) {
74                 $main::me->route_pc16($main::mycall, undef, $main::routeroot, $ref);
75                 $main::me->route_pc92a($main::mycall, undef, $main::routeroot, $ref) unless $DXProt::pc92_slug_changes;
76         }
77
78         return $self;
79 }
80
81 # this is how a a connection starts, you get a hello message and the motd with
82 # possibly some other messages asking you to set various things up if you are
83 # new (or nearly new and slacking) user.
84
85 sub start
86
87         my ($self, $line, $sort) = @_;
88         my $user = $self->{user};
89         my $call = $self->{call};
90         my $name = $user->{name};
91         
92         # log it
93         my $host = $self->{conn}->{peerhost};
94         $host ||= "AGW Port #$self->{conn}->{agwport}" if exists $self->{conn}->{agwport};
95         $host ||= "unknown";
96         LogDbg('DXCommand', "$call connected from $host");
97
98         $self->{name} = $name ? $name : $call;
99         $self->send($self->msg('l2',$self->{name}));
100         $self->state('prompt');         # a bit of room for further expansion, passwords etc
101         $self->{priv} = $user->priv || 0;
102         $self->{lang} = $user->lang || $main::lang || 'en';
103         my $pagelth = $user->pagelth;
104         $pagelth = $default_pagelth unless defined $pagelth;
105         $self->{pagelth} = $pagelth;
106         ($self->{width}) = $line =~ /width=(\d+)/; $line =~ s/\s*width=\d+\s*//;
107         $self->{width} = 80 unless $self->{width} && $self->{width} > 80;
108         $self->{consort} = $line;       # save the connection type
109         
110         # set some necessary flags on the user if they are connecting
111         $self->{beep} = $user->wantbeep;
112         $self->{ann} = $user->wantann;
113         $self->{wwv} = $user->wantwwv;
114         $self->{wcy} = $user->wantwcy;
115         $self->{talk} = $user->wanttalk;
116         $self->{wx} = $user->wantwx;
117         $self->{dx} = $user->wantdx;
118         $self->{logininfo} = $user->wantlogininfo;
119         $self->{ann_talk} = $user->wantann_talk;
120         $self->{here} = 1;
121         $self->{prompt} = $user->prompt if $user->prompt;
122
123         # sort out new dx spot stuff
124         $user->wantdxcq(0) unless defined $user->{wantdxcq};
125         $user->wantdxitu(0) unless defined $user->{wantdxitu};  
126         $user->wantusstate(0) unless defined $user->{wantusstate};
127
128         # sort out registration
129         if ($main::reqreg == 1) {
130                 $self->{registered} = $user->registered;
131         } elsif ($main::reqreg == 2) {
132                 $self->{registered} = !$user->registered;
133         } else {
134                 $self->{registered} = 1;
135         }
136
137
138         # decide which motd to send
139         my $motd;
140         unless ($self->{registered}) {
141                 $motd = "${main::motd}_nor_$self->{lang}";
142                 $motd = "${main::motd}_nor" unless -e $motd;
143         }
144         $motd = "${main::motd}_$self->{lang}" unless $motd && -e $motd;
145         $motd = $main::motd unless $motd && -e $motd;
146         if ($self->conn->{csort} eq 'ax25') {
147                 if ($motd) {
148                         $motd = "${motd}_ax25" if -e "${motd}_ax25";
149                 } else {
150                         $motd = "${main::motd}_ax25" if -e "${main::motd}_ax25";
151                 }
152         }
153         $self->send_file($motd) if -e $motd;
154
155         # sort out privilege reduction
156         $self->{priv} = 0 if $line =~ /^(ax|te)/ && !$self->conn->{usedpasswd};
157
158         # get the filters
159         my $nossid = $call;
160         $nossid =~ s/-\d+$//;
161         
162         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) 
163                 || Filter::read_in('spots', $nossid, 0)
164                         || Filter::read_in('spots', 'user_default', 0);
165         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) 
166                 || Filter::read_in('wwv', $nossid, 0) 
167                         || Filter::read_in('wwv', 'user_default', 0);
168         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) 
169                 || Filter::read_in('wcy', $nossid, 0) 
170                         || Filter::read_in('wcy', 'user_default', 0);
171         $self->{annfilter} = Filter::read_in('ann', $call, 0) 
172                 || Filter::read_in('ann', $nossid, 0) 
173                         || Filter::read_in('ann', 'user_default', 0) ;
174
175         # clean up qra locators
176         my $qra = $user->qra;
177         $qra = undef if ($qra && !DXBearing::is_qra($qra));
178         unless ($qra) {
179                 my $lat = $user->lat;
180                 my $long = $user->long;
181                 $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);  
182         }
183
184         # decide on echo
185         my $echo = $user->wantecho;
186         unless ($echo) {
187                 $self->send_now('E', "0");
188                 $self->send($self->msg('echow'));
189                 $self->conn->echo($echo) if $self->conn->can('echo');
190         }
191         
192         $self->tell_login('loginu');
193         $self->tell_buddies('loginb');
194         
195         # do we need to send a forward/opernam?
196         my $lastoper = $user->lastoper || 0;
197         my $homenode = $user->homenode || ""; 
198         if ($homenode eq $main::mycall && $main::systime >= $lastoper + $DXUser::lastoperinterval) {
199                 run_cmd($main::me, "forward/opernam $call");
200                 $user->lastoper($main::systime + ((int rand(10)) * 86400));
201         }
202
203         # run a script send the output to the punter
204         my $script = new Script(lc $call) || new Script('user_default');
205         $script->run($self) if $script;
206
207         # send cluster info
208         my $info = Route::cluster();
209         $self->send("Cluster:$info");
210
211         # send prompts for qth, name and things
212         $self->send($self->msg('namee1')) if !$user->name;
213         $self->send($self->msg('qthe1')) if !$user->qth;
214         $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
215         $self->send($self->msg('hnodee1')) if !$user->qth;
216         $self->send($self->msg('m9')) if DXMsg::for_me($call);
217
218         # send out any buddy messages for other people that are online
219         foreach my $call (@{$user->buddies}) {
220                 my $ref = Route::User::get($call);
221                 if ($ref) {
222                         foreach my $node (@{$ref->parent}) {
223                                 $self->send($self->msg($node eq $main::mycall ? 'loginb' : 'loginbn', $call, $node));
224                         } 
225                 }
226         }
227
228         $self->lastmsgpoll($main::systime);
229         $self->prompt;
230 }
231
232 #
233 # This is the normal command prompt driver
234 #
235
236 sub normal
237 {
238         my $self = shift;
239         my $cmdline = shift;
240         my @ans;
241
242         # save this for them's that need it
243         my $rawline = $cmdline;
244         
245         # remove leading and trailing spaces
246         $cmdline =~ s/^\s*(.*)\s*$/$1/;
247         
248         if ($self->{state} eq 'page') {
249                 my $i = $self->{pagelth};
250                 my $ref = $self->{pagedata};
251                 my $tot = @$ref;
252                 
253                 # abort if we get a line starting in with a
254                 if ($cmdline =~ /^a/io) {
255                         undef $ref;
256                         $i = 0;
257                 }
258         
259                 # send a tranche of data
260                 while ($i-- > 0 && @$ref) {
261                         my $line = shift @$ref;
262                         $line =~ s/\s+$//o;     # why am having to do this? 
263                         $self->send($line);
264                 }
265                 
266                 # reset state if none or else chuck out an intermediate prompt
267                 if ($ref && @$ref) {
268                         $tot -= $self->{pagelth};
269                         $self->send($self->msg('page', $tot));
270                 } else {
271                         $self->state('prompt');
272                 }
273         } elsif ($self->{state} eq 'sysop') {
274                 my $passwd = $self->{user}->passwd;
275                 if ($passwd) {
276                         my @pw = grep {$_ !~ /\s/} split //, $passwd;
277                         my @l = @{$self->{passwd}};
278                         my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
279                         if ($cmdline =~ /$str/) {
280                                 $self->{priv} = $self->{user}->priv;
281                         } else {
282                                 $self->send($self->msg('sorry'));
283                         }
284                 } else {
285                         $self->send($self->msg('sorry'));
286                 }
287                 $self->state('prompt');
288         } elsif ($self->{state} eq 'passwd') {
289                 my $passwd = $self->{user}->passwd;
290                 if ($passwd && $cmdline eq $passwd) {
291                         $self->send($self->msg('pw1'));
292                         $self->state('passwd1');
293                 } else {
294                         $self->conn->{echo} = $self->conn->{decho};
295                         delete $self->conn->{decho};
296                         $self->send($self->msg('sorry'));
297                         $self->state('prompt');
298                 }
299         } elsif ($self->{state} eq 'passwd1') {
300                 $self->{passwd} = $cmdline;
301                 $self->send($self->msg('pw2'));
302                 $self->state('passwd2');
303         } elsif ($self->{state} eq 'passwd2') {
304                 if ($cmdline eq $self->{passwd}) {
305                         $self->{user}->passwd($cmdline);
306                         $self->send($self->msg('pw3'));
307                 } else {
308                         $self->send($self->msg('pw4'));
309                 }
310                 $self->conn->{echo} = $self->conn->{decho};
311                 delete $self->conn->{decho};
312                 $self->state('prompt');
313         } elsif ($self->{state} eq 'talk' || $self->{state} eq 'chat') {
314                 if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
315                         for (@{$self->{talklist}}) {
316                                 if ($self->{state} eq 'talk') {
317                                         $self->send_talks($_,  $self->msg('talkend'));
318                                 } else {
319                                         $self->local_send('C', $self->msg('chatend', $_));
320                                 }
321                         }
322                         $self->state('prompt');
323                         delete $self->{talklist};
324                 } elsif ($cmdline =~ m|^/+\w+|) {
325                         $cmdline =~ s|^/||;
326                         my $sendit = $cmdline =~ s|^/+||;
327                         my @in = $self->run_cmd($cmdline);
328                         $self->send_ans(@in);
329                         if ($sendit && $self->{talklist} && @{$self->{talklist}}) {
330                                 foreach my $l (@in) {
331                                         my @bad;
332                                         if (@bad = BadWords::check($l)) {
333                                                 $self->badcount(($self->badcount||0) + @bad);
334                                                 LogDbg('DXCommand', "$self->{call} swore: $l with words:" . join(',', @bad) . ")");
335                                         } else {
336                                                 for (@{$self->{talklist}}) {
337                                                         if ($self->{state} eq 'talk') {
338                                                                 $self->send_talks($_, $l);
339                                                         } else {
340                                                                 send_chats($self, $_, $l)
341                                                         }
342                                                 }
343                                         }
344                                 }
345                         }
346                         $self->send($self->{state} eq 'talk' ? $self->talk_prompt : $self->chat_prompt);
347                 } elsif ($self->{talklist} && @{$self->{talklist}}) {
348                         # send what has been said to whoever is in this person's talk list
349                         my @bad;
350                         if (@bad = BadWords::check($cmdline)) {
351                                 $self->badcount(($self->badcount||0) + @bad);
352                                 LogDbg('DXCommand', "$self->{call} swore: $cmdline with words:" . join(',', @bad) . ")");
353                         } else {
354                                 for (@{$self->{talklist}}) {
355                                         if ($self->{state} eq 'talk') {
356                                                 $self->send_talks($_, $rawline);
357                                         } else {
358                                                 send_chats($self, $_, $rawline);
359                                         }
360                                 }
361                         }
362                         $self->send($self->talk_prompt) if $self->{state} eq 'talk';
363                         $self->send($self->chat_prompt) if $self->{state} eq 'chat';
364                 } else {
365                         # for safety
366                         $self->state('prompt');
367                 }
368         } elsif (my $func = $self->{func}) {
369                 no strict 'refs';
370                 my @ans;
371                 if (ref $self->{edit}) {
372                         eval { @ans = $self->{edit}->$func($self, $rawline)};
373                 } else {
374                         eval {  @ans = &{$self->{func}}($self, $rawline) };
375                 }
376                 if ($@) {
377                         $self->send_ans("Syserr: on stored func $self->{func}", $@);
378                         delete $self->{func};
379                         $self->state('prompt');
380                         undef $@;
381                 }
382                 $self->send_ans(@ans);
383         } else {
384                 $self->send_ans(run_cmd($self, $cmdline));
385         } 
386
387         # check for excessive swearing
388         if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
389                 LogDbg('DXCommand', "$self->{call} logged out for excessive swearing");
390                 $self->disconnect;
391                 return;
392         }
393
394         # send a prompt only if we are in a prompt state
395         $self->prompt() if $self->{state} =~ /^prompt/o;
396 }
397
398 # send out the talk messages taking into account vias and connectivity
399 sub send_talks
400 {
401         my ($self, $ent, $line) = @_;
402         
403         my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
404         $to = $ent unless $to;
405         my $call = $via && $via ne '*' ? $via : $to;
406         my $clref = Route::get($call);
407         my $dxchan = $clref->dxchan if $clref;
408         if ($dxchan) {
409                 $dxchan->talk($self->{call}, $to, undef, $line);
410         } else {
411                 $self->send($self->msg('disc2', $via ? $via : $to));
412                 my @l = grep { $_ ne $ent } @{$self->{talklist}};
413                 if (@l) {
414                         $self->{talklist} = \@l;
415                 } else {
416                         delete $self->{talklist};
417                         $self->state('prompt');
418                 }
419         }
420 }
421
422 sub send_chats
423 {
424         my $self = shift;
425         my $target = shift;
426         my $text = shift;
427
428         my $msgid = DXProt::nextchatmsgid();
429         $text = "#$msgid $text";
430         $main::me->normal(DXProt::pc93($target, $self->{call}, undef, $text));
431 }
432
433 sub special_prompt
434 {
435         my $self = shift;
436         my $prompt = shift;
437         my @call;
438         for (@{$self->{talklist}}) {
439                 my ($to, $via) = /(\S+)>(\S+)/;
440                 $to = $_ unless $to;
441                 push @call, $to;
442         }
443         return $self->msg($prompt, join(',', @call));
444 }
445
446 sub talk_prompt
447 {
448         my $self = shift;
449         return $self->special_prompt('talkprompt');
450 }
451
452 sub chat_prompt
453 {
454         my $self = shift;
455         return $self->special_prompt('chatprompt');
456 }
457
458 #
459 # send a load of stuff to a command user with page prompting
460 # and stuff
461 #
462
463 sub send_ans
464 {
465         my $self = shift;
466         
467         if ($self->{pagelth} && @_ > $self->{pagelth}) {
468                 my $i;
469                 for ($i = $self->{pagelth}; $i-- > 0; ) {
470                         my $line = shift @_;
471                         $line =~ s/\s+$//o;     # why am having to do this? 
472                         $self->send($line);
473                 }
474                 $self->{pagedata} =  [ @_ ];
475                 $self->state('page');
476                 $self->send($self->msg('page', scalar @_));
477         } else {
478                 for (@_) {
479                         if (defined $_) {
480                                 $self->send($_);
481                         } else {
482                                 $self->send('');
483                         }
484                 }
485         } 
486 }
487
488 # this is the thing that runs the command, it is done like this for the 
489 # benefit of remote command execution
490 #
491
492 sub run_cmd
493 {
494         my $self = shift;
495         my $user = $self->{user};
496         my $call = $self->{call};
497         my $cmdline = shift;
498         my @ans;
499         
500
501         return () if length $cmdline == 0;
502         
503         
504         # split the command line up into parts, the first part is the command
505         my ($cmd, $args) = split /\s+/, $cmdline, 2;
506         $args = "" unless defined $args;
507                 
508         if ($cmd) {
509                 # strip out // on command only
510                 $cmd =~ s|//|/|g;
511                 $cmd =~ s|^/||g;                # no leading / either
512                 $cmd =~ s|[^-?\w/]||g;          # and no funny characters either
513                                         
514                 my ($path, $fcmd);
515                         
516                 dbg("cmd: $cmd") if isdbg('command');
517                         
518                 # alias it if possible
519                 my $acmd = CmdAlias::get_cmd($cmd);
520                 if ($acmd) {
521                         ($cmd, $args) = split /\s+/, "$acmd $args", 2;
522                         $args = "" unless defined $args;
523                         dbg("aliased cmd: $cmd $args") if isdbg('command');
524                 }
525                         
526                 # first expand out the entry to a command
527                 ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
528                 ($path, $fcmd) = search($main::cmd, $cmd, "pl") unless $path && $fcmd;
529
530                 if ($path && $cmd) {
531                         dbg("path: $cmd cmd: $fcmd") if isdbg('command');
532                         
533                         my $package = find_cmd_name($path, $fcmd);
534                         return ($@) if $@;
535                                 
536                         if ($package) {
537                                 no strict 'refs';
538                                 dbg("package: $package") if isdbg('command');
539                                 eval { @ans = &$package($self, $args) };
540                                 return (DXDebug::shortmess($@)) if $@;
541                         }
542                 } else {
543                         dbg("cmd: $cmd not found") if isdbg('command');
544                         if (++$self->{errors} > $maxerrors) {
545                                 $self->send($self->msg('e26'));
546                                 $self->disconnect;
547                                 return ();
548                         } else {
549                                 return ($self->msg('e1'));
550                         }
551                 }
552         }
553         
554         my $ok = shift @ans;
555         if ($ok) {
556                 delete $self->{errors};
557         } else {
558                 if (++$self->{errors} > $maxerrors) {
559                         $self->send($self->msg('e26'));
560                         $self->disconnect;
561                         return ();
562                 }
563         }
564         return map {s/([^\s])\s+$/$1/; $_} @ans;
565 }
566
567 #
568 # This is called from inside the main cluster processing loop and is used
569 # for despatching commands that are doing some long processing job
570 #
571 sub process
572 {
573         my $t = time;
574         my @dxchan = DXChannel::get_all();
575         my $dxchan;
576         
577         foreach $dxchan (@dxchan) {
578                 next if $dxchan->sort ne 'U';  
579         
580                 # send a outstanding message prompt if required
581                 if ($t >= $dxchan->lastmsgpoll + $msgpolltime) {
582                         $dxchan->send($dxchan->msg('m9')) if DXMsg::for_me($dxchan->call);
583                         $dxchan->lastmsgpoll($t);
584                 }
585                 
586                 # send a prompt if no activity out on this channel
587                 if ($t >= $dxchan->t + $main::user_interval) {
588                         $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
589                         $dxchan->t($t);
590                 }
591         }
592
593         while (my ($k, $v) = each %nothereslug) {
594                 if ($main::systime >= $v + 300) {
595                         delete $nothereslug{$k};
596                 }
597         }
598
599         import_cmd();
600 }
601
602 #
603 # finish up a user context
604 #
605 sub disconnect
606 {
607         my $self = shift;
608         my $call = $self->call;
609
610         return if $self->{disconnecting}++;
611
612         delete $self->{senddbg};
613
614         my $uref = Route::User::get($call);
615         my @rout;
616         if ($uref) {
617 #               @rout = $main::routeroot->del_user($uref);
618                 @rout = DXProt::_del_thingy($main::routeroot, [$call, 0]);
619
620                 dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');
621
622                 # issue a pc17 to everybody interested
623                 $main::me->route_pc17($main::mycall, undef, $main::routeroot, $uref);
624                 $main::me->route_pc92d($main::mycall, undef, $main::routeroot, $uref) unless $DXProt::pc92_slug_changes;
625         } else {
626                 confess "trying to disconnect a non existant user $call";
627         }
628
629         # I was the last node visited
630     $self->user->node($main::mycall);
631                 
632         # send info to all logged in thingies
633         $self->tell_login('logoutu');
634         $self->tell_buddies('logoutb');
635
636         LogDbg('DXCommand', "$call disconnected");
637
638         $self->SUPER::disconnect;
639 }
640
641 #
642 # short cut to output a prompt
643 #
644
645 sub prompt
646 {
647         my $self = shift;
648
649         return if $self->{gtk};         # 'cos prompts are not a concept that applies here
650         
651         my $call = $self->call;
652         my $date = cldate($main::systime);
653         my $time = ztime($main::systime);
654         my $prompt = $self->{prompt} || $self->msg('pr');
655
656         $call = "($call)" unless $self->here;
657         $prompt =~ s/\%C/$call/g;
658         $prompt =~ s/\%D/$date/g;
659         $prompt =~ s/\%T/$time/g;
660         $prompt =~ s/\%M/$main::mycall/g;
661         
662         $self->send($prompt);
663 }
664
665 # broadcast a message to all users [except those mentioned after buffer]
666 sub broadcast
667 {
668         my $pkg = shift;                        # ignored
669         my $s = shift;                          # the line to be rebroadcast
670         
671     foreach my $dxchan (DXChannel::get_all()) {
672                 next unless $dxchan->{sort} eq 'U'; # only interested in user channels  
673                 next if grep $dxchan == $_, @_;
674                 $dxchan->send($s);                      # send it
675         }
676 }
677
678 # gimme all the users
679 sub get_all
680 {
681         return grep {$_->{sort} eq 'U'} DXChannel::get_all();
682 }
683
684 # run a script for this user
685 sub run_script
686 {
687         my $self = shift;
688         my $silent = shift || 0;
689         
690 }
691
692 #
693 # search for the command in the cache of short->long form commands
694 #
695
696 sub search
697 {
698         my ($path, $short_cmd, $suffix) = @_;
699         my ($apath, $acmd);
700         
701         # commands are lower case
702         $short_cmd = lc $short_cmd;
703         dbg("command: $path $short_cmd\n") if isdbg('command');
704
705         # do some checking for funny characters
706         return () if $short_cmd =~ /\/$/;
707
708         # return immediately if we have it
709         ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
710         if ($apath && $acmd) {
711                 dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
712                 return ($apath, $acmd);
713         }
714         
715         # if not guess
716         my @parts = split '/', $short_cmd;
717         my $dirfn;
718         my $curdir = $path;
719         
720         while (my $p = shift @parts) {
721                 opendir(D, $curdir) or confess "can't open $curdir $!";
722                 my @ls = readdir D;
723                 closedir D;
724
725                 # if this isn't the last part
726                 if (@parts) {
727                         my $found;
728                         foreach my $l (sort @ls) {
729                                 next if $l =~ /^\./;
730                                 if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
731                                         dbg("got dir: $curdir/$l\n") if isdbg('command');
732                                         $dirfn .= "$l/";
733                                         $curdir .= "/$l";
734                                         $found++;
735                                         last;
736                                 }
737                         }
738                         # only proceed if we find the directory asked for
739                         return () unless $found;
740                 } else {
741                         foreach my $l (sort @ls) {
742                                 next if $l =~ /^\./;
743                                 next unless $l =~ /\.$suffix$/;
744                                 if ($p eq substr($l, 0, length $p)) {
745                                         $l =~ s/\.$suffix$//;
746                                         $dirfn = "" unless $dirfn;
747                                         $cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
748                                         dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
749                                         return ($path, "$dirfn$l");
750                                 }
751                         }
752                 }
753         }
754
755         return ();  
756 }  
757
758 # clear the command name cache
759 sub clear_cmd_cache
760 {
761         no strict 'refs';
762         
763         for (keys %Cache) {
764                 undef *{$_} unless /cmd_cache/;
765                 dbg("Undefining cmd $_") if isdbg('command');
766         }
767         %cmd_cache = ();
768         %Cache = ();
769 }
770
771 #
772 # the persistant execution of things from the command directories
773 #
774 #
775 # This allows perl programs to call functions dynamically
776
777 # This has been nicked directly from the perlembed pages
778 #
779
780 #require Devel::Symdump;  
781
782 sub valid_package_name {
783         my($string) = @_;
784         $string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
785         
786         $string =~ s|/|_|g;
787         return "cmd_$string";
788 }
789
790
791 # this bit of magic finds a command in the offered directory
792 sub find_cmd_name {
793         my $path = shift;
794         my $cmdname = shift;
795         my $package = valid_package_name($cmdname);
796         my $filename = "$path/$cmdname.pl";
797         my $mtime = -M $filename;
798         
799         # return if we can't find it
800         $errstr = undef;
801         unless (defined $mtime) {
802                 $errstr = DXM::msg('e1');
803                 return undef;
804         }
805         
806         if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
807                 #we have compiled this subroutine already,
808                 #it has not been updated on disk, nothing left to do
809                 #print STDERR "already compiled $package->handler\n";
810                 ;
811         } else {
812
813                 my $sub = readfilestr($filename);
814                 unless ($sub) {
815                         $errstr = "Syserr: can't open '$filename' $!";
816                         return undef;
817                 };
818                 
819                 #wrap the code into a subroutine inside our unique package
820                 my $eval = qq( sub $package { $sub } );
821                 
822                 if (isdbg('eval')) {
823                         my @list = split /\n/, $eval;
824                         my $line;
825                         for (@list) {
826                                 dbg($_ . "\n") if isdbg('eval');
827                         }
828                 }
829                 
830                 # get rid of any existing sub and try to compile the new one
831                 no strict 'refs';
832
833                 if (exists $Cache{$package}) {
834                         dbg("Redefining $package") if isdbg('command');
835                         undef *$package;
836                 } else {
837                         dbg("Defining $package") if isdbg('command');
838                 }
839                 eval $eval;
840                 
841                 $Cache{$package} = {mtime => $mtime };
842             
843         }
844
845         return $package;
846 }
847
848 sub send
849 {
850         my $self = shift;
851         if ($self->{gtk}) {
852                 for (@_) {
853                         $self->SUPER::send(dd(['cmd',$_]));
854                 }
855         } else {
856                 $self->SUPER::send(@_);
857         }
858 }
859
860 sub local_send
861 {
862         my ($self, $let, $buf) = @_;
863         if ($self->{state} eq 'prompt' || $self->{state} eq 'talk' || $self->{state} eq 'chat') {
864                 if ($self->{enhanced}) {
865                         $self->send_later($let, $buf);
866                 } else {
867                         $self->send($buf);
868                 }
869         } else {
870                 $self->delay($buf);
871         }
872 }
873
874 # send a talk message here
875 sub talk
876 {
877         my ($self, $from, $to, $via, $line, $onode) = @_;
878         $line =~ s/\\5E/\^/g;
879         if ($self->{talk}) {
880                 if ($self->{gtk}) {
881                         $self->local_send('T', dd(['talk',$to,$from,$via,$line]));
882                 } else {
883                         $self->local_send('T', "$to de $from: $line");
884                 }
885         }
886         Log('talk', $to, $from, '<' . ($onode || '*'), $line);
887         # send a 'not here' message if required
888         unless ($self->{here} && $from ne $to) {
889                 my $key = "$to$from";
890                 unless (exists $nothereslug{$key}) {
891                         my ($ref, $dxchan);
892                         if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
893                                 my $name = $self->user->name || $to;
894                                 my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
895                                 $nothereslug{$key} = $main::systime;
896                                 $dxchan->talk($to, $from, undef, $s);
897                         }
898                 }
899         }
900 }
901
902 # send an announce
903 sub announce
904 {
905         my $self = shift;
906         my $line = shift;
907         my $isolate = shift;
908         my $to = shift;
909         my $target = shift;
910         my $text = shift;
911         my ($filter, $hops);
912
913         if (!$self->{ann_talk} && $to ne $self->{call}) {
914                 my $call = AnnTalk::is_talk_candidate($_[0], $text);
915                 return if $call;
916         }
917
918         if ($self->{annfilter}) {
919                 ($filter, $hops) = $self->{annfilter}->it(@_ );
920                 return unless $filter;
921         }
922
923         unless ($self->{ann}) {
924                 return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
925         }
926         return if $target eq 'SYSOP' && $self->{priv} < 5;
927         my $buf;
928         if ($self->{gtk}) {
929                 $buf = dd(['ann', $to, $target, $text, @_])
930         } else {
931                 $buf = "$to$target de $_[0]: $text";
932                 $buf =~ s/\%5E/^/g;
933                 $buf .= "\a\a" if $self->{beep};
934         }
935         $self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
936 }
937
938 # send a chat
939 sub chat
940 {
941         my $self = shift;
942         my $line = shift;
943         my $isolate = shift;
944         my $target = shift;
945         my $to = shift;
946         my $text = shift;
947         my ($filter, $hops);
948
949         return unless grep uc $_ eq $target, @{$self->{user}->{group}};
950         
951         $text =~ s/^\#\d+ //;
952         my $buf;
953         if ($self->{gtk}) {
954                 $buf = dd(['chat', $to, $target, $text, @_])
955         } else {
956                 $buf = "$target de $_[0]: $text";
957                 $buf =~ s/\%5E/^/g;
958                 $buf .= "\a\a" if $self->{beep};
959         }
960         $self->local_send('C', $buf);
961 }
962
963 sub format_dx_spot
964 {
965         my $self = shift;
966
967         my $t = ztime($_[2]);
968         my $loc = '';
969         my $clth = $self->{consort} eq 'local' ? 29 : 30;
970         my $comment = substr (($_[3] || ''), 0, $clth);
971         $comment .= ' ' x ($clth - length($comment));
972         if ($self->{user}->wantgrid) {
973                 my $ref = DXUser->get_current($_[4]);
974                 if ($ref) {
975                         $loc = $ref->qra || '';
976                         $loc = ' ' . substr($loc, 0, 4) if $loc;
977                 }
978         }
979
980         if ($self->{user}->wantdxitu) {
981                 $loc = ' ' . sprintf("%2d", $_[10]) if defined $_[10];
982                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[8]) if defined $_[8]; 
983         } elsif ($self->{user}->wantdxcq) {
984                 $loc = ' ' . sprintf("%2d", $_[11]) if defined $_[11];
985                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[9]) if defined $_[9]; 
986         } elsif ($self->{user}->wantusstate) {
987                 $loc = ' ' . $_[13] if $_[13];
988                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . $_[12] if $_[12]; 
989         }
990
991         return sprintf "DX de %-7.7s%11.1f  %-12.12s %-s $t$loc", "$_[4]:", $_[0], $_[1], $comment;
992 }
993
994 # send a dx spot
995 sub dx_spot
996 {
997         my $self = shift;
998         my $line = shift;
999         my $isolate = shift;
1000         return unless $self->{dx};
1001
1002         my ($filter, $hops);
1003
1004         if ($self->{spotsfilter}) {
1005                 ($filter, $hops) = $self->{spotsfilter}->it(@_ );
1006                 return unless $filter;
1007         }
1008
1009         dbg('spot: "' . join('","', @_) . '"') if isdbg('dxspot');
1010
1011         my $buf;
1012         if ($self->{ve7cc}) {
1013                 $buf = VE7CC::dx_spot($self, @_);
1014         } elsif ($self->{gtk}) {
1015                 my ($dxloc, $byloc);
1016
1017                 my $ref = DXUser->get_current($_[4]);
1018                 if ($ref) {
1019                         $byloc = $ref->qra;
1020                         $byloc = substr($byloc, 0, 4) if $byloc;
1021                 }
1022
1023                 my $spot = $_[1];
1024                 $spot =~ s|/\w{1,4}$||;
1025                 $ref = DXUser->get_current($spot);
1026                 if ($ref) {
1027                         $dxloc = $ref->qra;
1028                         $dxloc = substr($dxloc, 0, 4) if $dxloc;
1029                 }
1030                 $buf = dd(['dx', @_, ($dxloc||''), ($byloc||'')]);
1031                 
1032         } else {
1033                 $buf = $self->format_dx_spot(@_);
1034                 $buf .= "\a\a" if $self->{beep};
1035                 $buf =~ s/\%5E/^/g;
1036         }
1037
1038         $self->local_send('X', $buf);
1039 }
1040
1041 sub wwv
1042 {
1043         my $self = shift;
1044         my $line = shift;
1045         my $isolate = shift;
1046         my ($filter, $hops);
1047
1048         return unless $self->{wwv};
1049         
1050         if ($self->{wwvfilter}) {
1051                 ($filter, $hops) = $self->{wwvfilter}->it(@_[7..$#_] );
1052                 return unless $filter;
1053         }
1054
1055         my $buf;
1056         if ($self->{gtk}) {
1057                 $buf = dd(['wwv', @_])
1058         } else {
1059                 $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
1060                 $buf .= "\a\a" if $self->{beep};
1061         }
1062         
1063         $self->local_send('V', $buf);
1064 }
1065
1066 sub wcy
1067 {
1068         my $self = shift;
1069         my $line = shift;
1070         my $isolate = shift;
1071         my ($filter, $hops);
1072
1073         return unless $self->{wcy};
1074         
1075         if ($self->{wcyfilter}) {
1076                 ($filter, $hops) = $self->{wcyfilter}->it(@_ );
1077                 return unless $filter;
1078         }
1079
1080         my $buf;
1081         if ($self->{gtk}) {
1082                 $buf = dd(['wcy', @_])
1083         } else {
1084                 $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
1085                 $buf .= "\a\a" if $self->{beep};
1086         }
1087         $self->local_send('Y', $buf);
1088 }
1089
1090 # broadcast debug stuff to all interested parties
1091 sub broadcast_debug
1092 {
1093         my $s = shift;                          # the line to be rebroadcast
1094         
1095         foreach my $dxchan (DXChannel::get_all) {
1096                 next unless $dxchan->{enhanced} && $dxchan->{senddbg};
1097                 if ($dxchan->{gtk}) {
1098                         $dxchan->send_later('L', dd(['db', $s]));
1099                 } else {
1100                         $dxchan->send_later('L', $s);
1101                 }
1102         }
1103 }
1104
1105 sub do_entry_stuff
1106 {
1107         my $self = shift;
1108         my $line = shift;
1109         my @out;
1110         
1111         if ($self->state eq 'enterbody') {
1112                 my $loc = $self->{loc} || confess "local var gone missing" ;
1113                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
1114                         no strict 'refs';
1115                         push @out, &{$loc->{endaction}}($self);          # like this for < 5.8.0
1116                         $self->func(undef);
1117                         $self->state('prompt');
1118                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
1119                         push @out, $self->msg('m10');
1120                         delete $loc->{lines};
1121                         delete $self->{loc};
1122                         $self->func(undef);
1123                         $self->state('prompt');
1124                 } else {
1125                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
1126                         # i.e. it ain't and end or abort, therefore store the line
1127                 }
1128         } else {
1129                 confess "Invalid state $self->{state}";
1130         }
1131         return @out;
1132 }
1133
1134 sub store_startup_script
1135 {
1136         my $self = shift;
1137         my $loc = $self->{loc} || confess "local var gone missing" ;
1138         my @out;
1139         my $call = $loc->{call} || confess "callsign gone missing";
1140         confess "lines array gone missing" unless ref $loc->{lines};
1141         my $r = Script::store($call, $loc->{lines});
1142         if (defined $r) {
1143                 if ($r) {
1144                         push @out, $self->msg('m19', $call, $r);
1145                 } else {
1146                         push @out, $self->msg('m20', $call);
1147                 }
1148         } else {
1149                 push @out, "error opening startup script $call $!";
1150         } 
1151         return @out;
1152 }
1153
1154 # Import any commands contained in any files in import_cmd directory
1155 #
1156 # If the filename has a recogisable callsign as some delimited part
1157 # of it, then this is the user the command will be run as. 
1158 #
1159 sub import_cmd
1160 {
1161         # are there any to do in this directory?
1162         return unless -d $cmdimportdir;
1163         unless (opendir(DIR, $cmdimportdir)) {
1164                 LogDbg('err', "can\'t open $cmdimportdir $!");
1165                 return;
1166         } 
1167
1168         my @names = readdir(DIR);
1169         closedir(DIR);
1170         my $name;
1171         foreach $name (@names) {
1172                 next if $name =~ /^\./;
1173
1174                 my $s = Script->new($name, $cmdimportdir);
1175                 if ($s) {
1176                         LogDbg('DXCommand', "Run import cmd file $name");
1177                         my @cat = split /[^A-Za-z0-9]+/, $name;
1178                         my ($call) = grep {is_callsign(uc $_)} @cat;
1179                         $call ||= $main::mycall;
1180                         $call = uc $call;
1181                         my @out;
1182                         
1183                         
1184                         $s->inscript(0);        # switch off script checks
1185                         
1186                         if ($call eq $main::mycall) {
1187                                 @out = $s->run($main::me, 1);
1188                         } else {
1189                                 my $dxchan = DXChannel::get($call);
1190                             if ($dxchan) {
1191                                         @out = $s->run($dxchan, 1);
1192                                 } else {
1193                                         my $u = DXUser->get($call);
1194                                         if ($u) {
1195                                                 $dxchan = $main::me;
1196                                                 my $old = $dxchan->{call};
1197                                                 my $priv = $dxchan->{priv};
1198                                                 my $user = $dxchan->{user};
1199                                                 $dxchan->{call} = $call;
1200                                                 $dxchan->{priv} = $u->priv;
1201                                                 $dxchan->{user} = $u;
1202                                                 @out = $s->run($dxchan, 1);
1203                                                 $dxchan->{call} = $call;
1204                                                 $dxchan->{priv} = $priv;
1205                                                 $dxchan->{user} = $user;
1206                                         } else {
1207                                                 LogDbg('err', "Trying to run import cmd for non-existant user $call");
1208                                         }
1209                                 }
1210                         }
1211                         $s->erase;
1212                         for (@out) {
1213                                 LogDbg('DXCommand', "Import cmd $name/$call: $_");
1214                         }
1215                 } else {
1216                         LogDbg('err', "Failed to open $cmdimportdir/$name $!");
1217                         unlink "$cmdimportdir/$name";
1218                 }
1219         }
1220 }
1221
1222 sub print_find_reply
1223 {
1224         my ($self, $node, $target, $flag, $ms) = @_;
1225         my $sort = $flag == 2 ? "External" : "Local";
1226         $self->send("$sort $target found at $node in $ms ms" );
1227 }
1228 1;
1229 __END__