2 # This has been taken from the 'Advanced Perl Programming' book by Sriram Srinivasan
4 # I am presuming that the code is distributed on the same basis as perl itself.
6 # I have modified it to suit my devious purposes (Dirk Koopman G1TLH)
18 use Mojo::IOLoop::Stream;
23 use vars qw($now %conns $noconns $cnum $total_in $total_out $total_lines_in $total_lines_out $connect_timeout $disc_waittime);
25 $total_in = $total_out = 0;
26 $total_lines_in = $total_lines_out = 0;
37 #-----------------------------------------------------------------
38 # Generalised initializer
42 my ($pkg, $rproc) = @_;
44 my $class = $obj || $pkg;
55 cnum => (($cnum < 999) ? (++$cnum) : ($cnum = 1)),
64 dbg("$class Connection created (total $noconns)") if isdbg('connll');
65 return bless $conn, $class;
72 $conn->{sock}->on(error => sub {$callback->($_[1]);});
79 $conn->{sock}->on(close => sub {$callback->()});
86 $conn->{rproc} = $callback;
97 $call = $pkg->{call} unless $call;
98 return undef unless $call;
99 dbg((ref $pkg) . " changing $pkg->{call} to $call") if isdbg('connll') && exists $pkg->{call} && $call ne $pkg->{call};
100 delete $conns{$pkg->{call}} if exists $pkg->{call} && exists $conns{$pkg->{call}} && $pkg->{call} ne $call;
101 $pkg->{call} = $call;
102 $ref = $conns{$call} = $pkg;
103 dbg((ref $pkg) . " Connection $pkg->{cnum} $call stored") if isdbg('connll');
105 $ref = $conns{$call};
110 # this is only called by any dependent processes going away unexpectedly
113 my ($pkg, $pid) = @_;
115 my @pid = grep {$_->{pid} == $pid} values %conns;
116 foreach my $p (@pid) {
117 &{$p->{eproc}}($p, "$pid has gorn") if exists $p->{eproc};
125 return $conn->{csort} eq 'ax25';
131 unless ($conn->{peerhost}) {
132 $conn->{peerhost} ||= 'ax25' if $conn->ax25;
133 $conn->{peerhost} ||= $conn->{sock}->handle->peerhost if $conn->{sock};
134 $conn->{peerhost} ||= 'UNKNOWN';
136 return $conn->{peerhost};
139 #-----------------------------------------------------------------
147 my $sock = $conn->{sock} = Mojo::IOLoop::Stream->new($handle);
148 $sock->on(read => sub {$conn->_rcv($_[1]);} );
149 $sock->on(error => sub {delete $conn->{sock}; $conn->disconnect;});
150 $sock->on(close => sub {delete $conn->{sock}; $conn->disconnect;});
153 $conn->{peerhost} = eval { $handle->peerhost; };
154 dbg((ref $conn) . " connected $conn->{cnum} to $conn->{peerhost}:$conn->{peerport}") if isdbg('conn') || isdbg ('connect');
155 if ($conn->{on_connect}) {
156 &{$conn->{on_connect}}($conn, $handle);
163 my $sock = $conn->{sock};
164 return ref $sock && $sock->isa('Mojo::IOLoop::Stream');
168 my ($pkg, $to_host, $to_port, %args) = @_;
169 my $timeout = delete $args{timeout} || $connect_timeout;
171 # Create a connection end-point object
174 my $rproc = delete $args{rproc};
175 $conn = $pkg->new($rproc);
177 $conn->{peerhost} = $to_host;
178 $conn->{peerport} = $to_port;
179 $conn->{sort} = 'Outgoing';
181 dbg((ref $conn) . " connecting $conn->{cnum} to $to_host:$to_port") if isdbg('connll');
184 $conn->{sock} = $sock = Mojo::IOLoop::Client->new;
185 $sock->on(connect => sub {
186 $conn->_on_connect($_[1])
188 $sock->on(error => sub {
189 &{$conn->{eproc}}($conn, $_[1]) if exists $conn->{eproc};
190 delete $conn->{sock};
193 $sock->on(close => sub {
194 delete $conn->{sock};
198 # copy any args like on_connect, on_disconnect etc
199 while (my ($k, $v) = each %args) {
203 $sock->connect(address => $to_host, port => $to_port, timeout => $timeout);
210 my ($conn, $line, $sort) = @_;
213 # local $^F = 10000; # make sure it ain't closed on exec
214 # my ($a, $b) = $io_socket->socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC);
219 # if (defined $pid) {
222 # $conn->{sock} = $a;
223 # $conn->{csort} = $sort;
224 # $conn->{lineend} = "\cM" if $sort eq 'ax25';
225 # $conn->{pid} = $pid;
226 # if ($conn->{rproc}) {
227 # my $callback = sub {$conn->_rcv};
228 # Msg::set_event_handler ($a, read => $callback);
230 # dbg("connect $conn->{cnum}: started pid: $conn->{pid} as $line") if isdbg('connect');
237 # *STDIN = IO::File->new_from_fd($b, 'r') or die;
238 # *STDOUT = IO::File->new_from_fd($b, 'w') or die;
239 # *STDERR = IO::File->new_from_fd($b, 'w') or die;
241 # unless ($main::is_win) {
242 # # $SIG{HUP} = 'IGNORE';
243 # $SIG{HUP} = $SIG{CHLD} = $SIG{TERM} = $SIG{INT} = 'DEFAULT';
246 # exec "$line" or dbg("exec '$line' failed $!");
249 # dbg("cannot fork for $line");
252 # dbg("no socket pair $! for $line");
260 my $count = $conn->{disconnecting}++;
261 my $dbg = isdbg('connll');
262 my ($pkg, $fn, $line) = caller if $dbg;
265 dbgtrace((ref $conn) . "::disconnect on call $conn->{call} attempt $conn->{disconnecting} called from ${pkg}::${fn} line $line FORCING CLOSE ") if $dbg;
269 dbg((ref $conn) . "::disconnect on call $conn->{call} attempt $conn->{disconnecting} called from ${pkg}::${fn} line $line ") if $dbg;
272 # remove this conn from the active queue
273 # be careful to delete the correct one
275 if ($call = $conn->{call}) {
276 my $ref = $conns{$call};
277 delete $conns{$call} if $ref && $ref == $conn;
279 $call ||= 'unallocated';
281 $delqueue{$conn} = $conn; # save this connection until everything is finished
282 my $sock = $conn->{sock};
284 if ($sock->{buffer}) {
285 my $lth = length $sock->{buffer};
286 Mojo::IOLoop->timer($disc_waittime, sub {
287 dbg("Buffer contained $lth characters, coordinated for $disc_waittime secs, now disconnecting $call") if $dbg;
291 dbg("Buffer empty, just close $call") if $dbg;
295 dbg((ref $conn) . " socket missing on $conn->{call}") if $dbg;
303 my $sock = delete $conn->{sock};
304 $conn->{state} = 'E';
305 $conn->{timeout}->del if $conn->{timeout};
307 my $call = $conn->{call};
309 if (isdbg('connll')) {
310 my ($pkg, $fn, $line) = caller;
311 dbg((ref $conn) . "::_close_it on call $conn->{call} attempt $conn->{disconnecting} called from ${pkg}::${fn} line $line ");
315 dbg((ref $conn) . " Connection $conn->{cnum} $call starting to close") if isdbg('connll');
317 if ($conn->{on_disconnect}) {
318 &{$conn->{on_disconnect}}($conn);
322 dbg((ref $conn) . " Connection $conn->{cnum} $call closing gracefully") if isdbg('connll');
323 $sock->close_gracefully;
326 # get rid of any references
328 if (ref($conn->{$_})) {
333 delete $delqueue{$conn}; # finally remove the $conn
335 unless ($main::is_win) {
336 kill 'TERM', $conn->{pid} if exists $conn->{pid};
343 my $rq = $conn->{outqueue};
344 my $sock = $conn->{sock};
345 return unless defined $sock;
346 return if $conn->{disconnecting};
349 my $data = shift @$rq;
350 my $lth = length $data;
351 my $call = $conn->{call} || 'none';
353 dbgdump('raw', "$call send $lth:", $data);
358 $conn->{dataout} += $lth;
362 dbg("_send_stuff $call ending data ignored: $data");
368 my ($conn, $msg) = @_;
369 $conn->enqueue($msg);
379 my ($conn, $msg) = @_;
380 push @{$conn->{outqueue}}, $msg;
386 push @{$conn->{outqueue}}, defined $_[0] ? $_[0] : '';
397 $conn->{sock}->on(drain => sub {$conn->disconnect;});
400 #-----------------------------------------------------------------
401 # Receive side routines
405 # @_ == 4 || die "Msg->new_server (myhost, myport, login_proc)\n";
406 my ($pkg, $my_host, $my_port, $login_proc) = @_;
407 my $conn = $pkg->new($login_proc);
409 my $sock = $conn->{sock} = Mojo::IOLoop::Server->new;
410 $sock->on(accept=>sub{$conn->new_client($_[1]);});
411 $sock->listen(address=>$my_host, port=>$my_port);
414 die "Could not create socket: $! \n" unless $conn->{sock};
427 return if $conn->{disconnecting};
429 if ($conn->{msg} =~ /\cJ/) {
430 my @lines = split /\cM?\cJ/, $conn->{msg};
431 if ($conn->{msg} =~ /\cM?\cJ$/) {
434 $conn->{msg} = pop @lines;
436 $conn->{linesin} += @lines;
437 $total_lines_in += @lines;
439 last if $conn->{disconnecting};
440 &{$conn->{rproc}}($conn, defined $_ ? $_ : '');
445 sub _rcv { # Complement to _send
446 my $conn = shift; # $rcv_now complement of $flush
448 my $sock = $conn->{sock};
449 return unless defined($sock);
450 return if $conn->{disconnecting};
452 $total_in += length $msg;
453 $conn->{datain} += length $msg;
456 my $call = $conn->{call} || 'none';
457 my $lth = length $msg;
458 dbgdump('raw', "$call read $lth: ", $msg);
461 my @ch = split //, $msg;
466 $conn->{msg} =~ s/.$//;
473 $conn->send_raw($out);
476 $conn->{msg} .= $msg;
479 unless ($conn->{disable_read}) {
480 $conn->dequeue if exists $conn->{msg};
485 my $server_conn = shift;
488 my $conn = $server_conn->new($server_conn->{rproc});
489 my $sock = $conn->{sock} = Mojo::IOLoop::Stream->new($handle);
490 $sock->on(read => sub {$conn->_rcv($_[1])});
493 $conn->{peerhost} = $handle->peerhost || 'unknown';
494 $conn->{peerhost} =~ s|^::ffff:||; # chop off leading pseudo IPV6 stuff on dual stack listeners
495 $conn->{peerport} = $handle->peerport || 0;
496 dbg((ref $conn) . " accept $conn->{cnum} from $conn->{peerhost}:$conn->{peerport}") if isdbg('conn') || isdbg('connect');
497 my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost}, $conn->{peerport});
498 $conn->{sort} = 'Incoming';
500 $conn->{eproc} = $eproc;
503 $conn->{rproc} = $rproc;
504 } else { # Login failed
505 &{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
514 delete $conn->{sock};
517 # close all clients (this is for forking really)
518 sub close_all_clients
520 foreach my $conn (values %conns) {
528 return defined $_[0] ? $conn->{disable_read} = $_[0] : $_[0];
533 #----------------------------------------------------
534 # Event loop routines used by both client and server
536 sub set_event_handler {
539 my ($pkg, $fn, $line) = caller;
541 foreach (my ($k,$v) = each %args) {
545 dbg("Msg::set_event_handler called from ${pkg}::${fn} line $line doing $s");
550 my ($pkg, $interval) = @_;
552 while (time - $now < $interval) {
560 my $call = $conn->{call} || 'unallocated';
562 if (isdbg('connll')) {
563 my ($pkg, $fn, $line) = caller;
564 dbgtrace((ref $conn) . "::DESTROY on call $call called from ${pkg}::${fn} line $line ");
567 my $call = $conn->{call} || 'unallocated';
568 my $host = $conn->{peerhost} || '';
569 my $port = $conn->{peerport} || '';
570 my $sock = $conn->{sock};
573 $sock->close_gracefully;
577 dbg((ref $conn) . " Connection $conn->{cnum} $call [$host $port] being destroyed (total $noconns)") if isdbg('connll');