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Fix some problems (on testing) with AGW restarts
[spider.git] / perl / ExtMsg.pm
1 #
2 # This class is the internal subclass that deals with the external port
3 # communications for Msg.pm
4 #
5 # This is where the cluster handles direct connections coming both in
6 # and out
7 #
8 #
9 # Copyright (c) 2001 - Dirk Koopman G1TLH
10 #
11 #       Modified Jan 2006 by John Wiseman G8BPQ to support connections to BPQ32 node,
12 #               and fix pattern matching on 'chat' abort handling
13 #
14
15 package ExtMsg;
16
17 use strict;
18 use Msg;
19 use DXVars;
20 use DXUtil;
21 use DXDebug;
22 use IO::File;
23 use IO::Socket;
24 use IPC::Open3;
25
26 use vars qw(@ISA $deftimeout);
27
28 @ISA = qw(Msg);
29 $deftimeout = 60;
30
31 sub login
32 {
33         goto &main::login;        # save some writing, this was the default
34 }
35
36 sub enqueue
37 {
38         my ($conn, $msg) = @_;
39         unless ($msg =~ /^[ABZ]/) {
40                 if ($msg =~ /^E[-\w]+\|([01])/ && $conn->{csort} eq 'telnet') {
41                         $conn->{echo} = $1;
42                         if ($1) {
43 #                               $conn->send_raw("\xFF\xFC\x01");
44                         } else {
45 #                               $conn->send_raw("\xFF\xFB\x01");
46                         }
47                 } else {
48                         $msg =~ s/^[-\w]+\|//;
49                         push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
50                 }
51         }
52 }
53
54 sub send_raw
55 {
56         my ($conn, $msg) = @_;
57     my $sock = $conn->{sock};
58     return unless defined($sock);
59         push (@{$conn->{outqueue}}, $msg);
60         dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
61     Msg::set_event_handler ($sock, "write" => sub {$conn->_send(0)});
62 }
63
64 sub echo
65 {
66         my $conn = shift;
67         $conn->{echo} = shift;
68 }
69
70 sub dequeue
71 {
72         my $conn = shift;
73         my $msg;
74
75         if ($conn->{csort} eq 'ax25' && exists $conn->{msg}) {
76                 $conn->{msg} =~ s/\cM/\cJ/g;
77         }
78         if ($conn->{state} eq 'WC') {
79                 if (exists $conn->{cmd}) {
80                         if (@{$conn->{cmd}}) {
81                                 dbg("connect $conn->{cnum}: $conn->{msg}") if isdbg('connect');
82                                 $conn->_docmd($conn->{msg});
83                         } 
84                 }
85                 if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
86                         $conn->to_connected($conn->{call}, 'O', $conn->{csort});
87                 }
88         } elsif ($conn->{msg} =~ /\cJ/) {
89                 my @lines =  $conn->{msg} =~ /([^\cM\cJ]*)\cM?\cJ/g;
90                 if ($conn->{msg} =~ /\cJ$/) {
91                         delete $conn->{msg};
92                 } else {
93                         $conn->{msg} =~ s/([^\cM\cJ]*)\cM?\cJ//g;
94                 }
95                 while (defined ($msg = shift @lines)) {
96                         dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
97                 
98                         $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
99 #                       $msg =~ s/[\x00-\x08\x0a-\x19\x1b-\x1f\x80-\x9f]/./g;         # immutable CSI sequence + control characters
100                         
101                         if ($conn->{state} eq 'C') {
102                                 &{$conn->{rproc}}($conn, "I$conn->{call}|$msg");
103                         } elsif ($conn->{state} eq 'WL' ) {
104                                 $msg = uc $msg;
105                                 if (is_callsign($msg) && $msg !~ m|/| ) {
106                                         my $sort = $conn->{csort};
107                                         $sort = 'local' if $conn->{peerhost} =~ /127\.\d+\.\d+\.\d+$/ || $conn->{peerhost} eq '::1';
108                                         my $uref;
109                                         if ($main::passwdreq || ($uref = DXUser->get_current($msg)) && $uref->passwd ) {
110                                                 $conn->conns($msg);
111                                                 $conn->{state} = 'WP';
112                                                 $conn->{decho} = $conn->{echo};
113                                                 $conn->{echo} = 0;
114                                                 $conn->send_raw('password: ');
115                                         } else {
116                                                 $conn->to_connected($msg, 'A', $sort);
117                                         }
118                                 } else {
119                                         $conn->send_now("Sorry $msg is an invalid callsign");
120                                         $conn->disconnect;
121                                 }
122                         } elsif ($conn->{state} eq 'WP' ) {
123                                 my $uref = DXUser->get_current($conn->{call});
124                                 $msg =~ s/[\r\n]+$//;
125                                 if ($uref && $msg eq $uref->passwd) {
126                                         my $sort = $conn->{csort};
127                                         $conn->{echo} = $conn->{decho};
128                                         delete $conn->{decho};
129                                         $sort = 'local' if $conn->{peerhost} =~ /127\.\d+\.\d+\.\d+$/ || $conn->{peerhost} eq '::1';
130                                         $conn->{usedpasswd} = 1;
131                                         $conn->to_connected($conn->{call}, 'A', $sort);
132                                 } else {
133                                         $conn->send_now("Sorry");
134                                         $conn->disconnect;
135                                 }
136                         } elsif ($conn->{state} eq 'WC') {
137                                 if (exists $conn->{cmd} && @{$conn->{cmd}}) {
138                                         $conn->_docmd($msg);
139                                         if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
140                                                 $conn->to_connected($conn->{call}, 'O', $conn->{csort});
141                                         }
142                                 }
143                         }
144                 }
145         }
146 }
147
148 sub to_connected
149 {
150         my ($conn, $call, $dir, $sort) = @_;
151         $conn->{state} = 'C';
152         $conn->conns($call);
153         delete $conn->{cmd};
154         $conn->{timeout}->del if $conn->{timeout};
155         delete $conn->{timeout};
156         $conn->nolinger unless $conn->isa('AGWMsg') || $conn->isa('BPQMsg');
157         &{$conn->{rproc}}($conn, "$dir$call|$sort");
158         $conn->_send_file("$main::data/connected") unless $conn->{outgoing};
159 }
160
161 sub new_client {
162         my $server_conn = shift;
163     my $sock = $server_conn->{sock}->accept();
164         if ($sock) {
165                 my $conn = $server_conn->new($server_conn->{rproc});
166                 $conn->{sock} = $sock;
167                 $conn->nolinger;
168                 Msg::blocking($sock, 0);
169                 $conn->{blocking} = 0;
170                 eval {$conn->{peerhost} = $sock->peerhost};
171                 if ($@) {
172                         dbg($@) if isdbg('connll');
173                         $conn->disconnect;
174                 } else {
175                         eval {$conn->{peerport} = $sock->peerport};
176                         $conn->{peerport} = 0 if $@;
177                         my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost}, $conn->{peerport});
178                         dbg("accept $conn->{cnum} from $conn->{peerhost} $conn->{peerport}") if isdbg('connll');
179                         if ($eproc) {
180                                 $conn->{eproc} = $eproc;
181                                 Msg::set_event_handler ($sock, "error" => $eproc);
182                         }
183                         if ($rproc) {
184                                 $conn->{rproc} = $rproc;
185                                 my $callback = sub {$conn->_rcv};
186                                 Msg::set_event_handler ($sock, "read" => $callback);
187                                 # send login prompt
188                                 $conn->{state} = 'WL';
189                                 #               $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
190                                 #               $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
191                                 #               $conn->send_raw("\xFF\xFC\x01");
192                                 $conn->_send_file("$main::data/issue");
193                                 $conn->send_raw("login: ");
194                                 $conn->_dotimeout(60);
195                                 $conn->{echo} = 1;
196                         } else { 
197                                 &{$conn->{eproc}}() if $conn->{eproc};
198                                 $conn->disconnect();
199                         }
200                 }
201         } else {
202                 dbg("ExtMsg: error on accept ($!)") if isdbg('err');
203         }
204 }
205
206 sub start_connect
207 {
208         my $call = shift;
209         my $fn = shift;
210         my $conn = ExtMsg->new(\&main::new_channel); 
211         $conn->{outgoing} = 1;
212         $conn->conns($call);
213         
214         my $f = new IO::File $fn;
215         push @{$conn->{cmd}}, <$f>;
216         $f->close;
217         $conn->{state} = 'WC';
218         $conn->_dotimeout($deftimeout);
219         $conn->_docmd;
220 }
221
222 sub _docmd
223 {
224         my $conn = shift;
225         my $msg = shift;
226         my $cmd;
227
228         while ($cmd = shift @{$conn->{cmd}}) {
229                 chomp $cmd;
230                 next if $cmd =~ /^\s*\#/o;
231                 next if $cmd =~ /^\s*$/o;
232                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
233                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
234                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
235                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
236                         unless ($conn->_doconnect($1, $2)) {
237                                 $conn->disconnect;
238                                 @{$conn->{cmd}} = [];    # empty any further commands
239                                 last;
240                         }  
241                 }
242                 if ($cmd =~ /^\s*\'([^\']*)\'\s+\'([^\']*)\'/) {
243                         $conn->_dochat($cmd, $msg, $1, $2);
244                         last;
245                 }
246                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
247                         $conn->_doclient($1);
248                         last;
249                 }
250                 last if $conn->{state} eq 'E';
251         }
252 }
253
254 sub _doconnect
255 {
256         my ($conn, $sort, $line) = @_;
257         my $r;
258
259         $sort = lc $sort;
260         dbg("CONNECT $conn->{cnum} sort: $sort command: $line") if isdbg('connect');
261         if ($sort eq 'telnet') {
262                 # this is a straight network connect
263                 my ($host, $port) = split /\s+/, $line;
264                 $port = 23 if !$port;
265                 $r = $conn->connect($host, $port);
266                 if ($r) {
267                         dbg("Connected $conn->{cnum} to $host $port") if isdbg('connect');
268                 } else {
269                         dbg("***Connect $conn->{cnum} Failed to $host $port $!") if isdbg('connect');
270                 }
271         } elsif ($sort eq 'agw') {
272                 # turn it into an AGW object
273                 bless $conn, 'AGWMsg';
274                 $r = $conn->connect($line);
275         } elsif ($sort eq 'bpq') {
276                 # turn it into an BPQ object
277                 bless $conn, 'BPQMsg';
278                 $r = $conn->connect($line);
279         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
280                 $r = $conn->start_program($line, $sort);
281         } else {
282                 dbg("invalid type of connection ($sort)");
283         }
284         $conn->disconnect unless $r;
285         return $r;
286 }
287
288 sub _doabort
289 {
290         my $conn = shift;
291         my $string = shift;
292         dbg("connect $conn->{cnum}: abort $string") if isdbg('connect');
293         $conn->{abort} = $string;
294 }
295
296 sub _dotimeout
297 {
298         my $conn = shift;
299         my $val = shift;
300         dbg("connect $conn->{cnum}: timeout set to $val") if isdbg('connect');
301         $conn->{timeout}->del if $conn->{timeout};
302         $conn->{timeval} = $val;
303         $conn->{timeout} = Timer->new($val, sub{ &_timedout($conn) });
304 }
305
306 sub _dolineend
307 {
308         my $conn = shift;
309         my $val = shift;
310         dbg("connect $conn->{cnum}: lineend set to $val ") if isdbg('connect');
311         $val =~ s/\\r/\r/g;
312         $val =~ s/\\n/\n/g;
313         $conn->{lineend} = $val;
314 }
315
316 sub _dochat
317 {
318         my $conn = shift;
319         my $cmd = shift;
320         my $line = shift;
321         my $expect = shift;
322         my $send = shift;
323                 
324         if ($line) {
325                 if ($expect) {
326                         dbg("connect $conn->{cnum}: expecting: \"$expect\" received: \"$line\"") if isdbg('connect');
327                         if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
328                                 dbg("connect $conn->{cnum}: aborted on /$conn->{abort}/") if isdbg('connect');
329                                 $conn->disconnect;
330                                 delete $conn->{cmd};
331                                 return;
332                         }
333                         if ($line =~ /\Q$expect/i) {
334                                 if (length $send) {
335                                         dbg("connect $conn->{cnum}: got: \"$expect\" sending: \"$send\"") if isdbg('connect');
336                                         $conn->send_later("D$conn->{call}|$send");
337                                 }
338                                 delete $conn->{msg}; # get rid any input if a match
339                                 return;
340                         }
341                 }
342         }
343         $conn->{state} = 'WC';
344         unshift @{$conn->{cmd}}, $cmd;
345 }
346
347 sub _timedout
348 {
349         my $conn = shift;
350         dbg("connect $conn->{cnum}: timed out after $conn->{timeval} seconds") if isdbg('connect');
351         $conn->disconnect;
352 }
353
354 # handle callsign and connection type firtling
355 sub _doclient
356 {
357         my $conn = shift;
358         my $line = shift;
359         my @f = split /\s+/, $line;
360         my $call = uc $f[0] if $f[0];
361         $conn->conns($call);
362         $conn->{csort} = $f[1] if $f[1];
363         $conn->{state} = 'C';
364         &{$conn->{rproc}}($conn, "O$call|$conn->{csort}");
365         delete $conn->{cmd};
366         $conn->{timeout}->del if $conn->{timeout};
367 }
368
369 sub _send_file
370 {
371         my $conn = shift;
372         my $fn = shift;
373         
374         if (-e $fn) {
375                 my $f = new IO::File $fn;
376                 if ($f) {
377                         while (<$f>) {
378                                 chomp;
379                                 my $l = $_;
380                                 dbg("connect $conn->{cnum}: $l") if isdbg('connll');
381                                 $conn->send_raw($l . $conn->{lineend});
382                         }
383                         $f->close;
384                 }
385         }
386 }