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 $connect_timeout $disc_waittime);
25 $total_in = $total_out = 0;
37 #-----------------------------------------------------------------
38 # Generalised initializer
42 my ($pkg, $rproc) = @_;
44 my $class = $obj || $pkg;
55 cnum => (($cnum < 999) ? (++$cnum) : ($cnum = 1)),
60 dbg("$class Connection created (total $noconns)") if isdbg('connll');
61 return bless $conn, $class;
68 $conn->{sock}->on(error => sub {$callback->($_[1]);});
75 $conn->{sock}->on(close => sub {$callback->()});
82 $conn->{rproc} = $callback;
93 $call = $pkg->{call} unless $call;
94 return undef unless $call;
95 dbg((ref $pkg) . " changing $pkg->{call} to $call") if isdbg('connll') && exists $pkg->{call} && $call ne $pkg->{call};
96 delete $conns{$pkg->{call}} if exists $pkg->{call} && exists $conns{$pkg->{call}} && $pkg->{call} ne $call;
98 $ref = $conns{$call} = $pkg;
99 dbg((ref $pkg) . " Connection $pkg->{cnum} $call stored") if isdbg('connll');
101 $ref = $conns{$call};
106 # this is called as a FUNCTION i.e my $conn = Msg::get($call);
109 return $conns{shift};
112 # this is only called by any dependent processes going away unexpectedly
115 my ($pkg, $pid) = @_;
117 my @pid = grep {$_->{pid} == $pid} values %conns;
118 foreach my $p (@pid) {
119 &{$p->{eproc}}($p, "$pid has gorn") if exists $p->{eproc};
127 return $conn->{csort} eq 'ax25';
133 unless ($conn->{peerhost}) {
134 $conn->{peerhost} ||= 'ax25' if $conn->ax25;
135 $conn->{peerhost} ||= $conn->{sock}->handle->peerhost if $conn->{sock};
136 $conn->{peerhost} ||= 'UNKNOWN';
138 return $conn->{peerhost};
141 #-----------------------------------------------------------------
149 my $sock = $conn->{sock} = Mojo::IOLoop::Stream->new($handle);
150 $sock->on(read => sub {$conn->_rcv($_[1]);} );
151 $sock->on(error => sub {delete $conn->{sock}; $conn->disconnect;});
152 $sock->on(close => sub {delete $conn->{sock}; $conn->disconnect;});
155 $conn->{peerhost} = eval { $handle->peerhost; };
156 dbg((ref $conn) . " connected $conn->{cnum} to $conn->{peerhost}:$conn->{peerport}") if isdbg('connll');
157 if ($conn->{on_connect}) {
158 &{$conn->{on_connect}}($conn, $handle);
165 my $sock = $conn->{sock};
166 return ref $sock && $sock->isa('Mojo::IOLoop::Stream');
170 my ($pkg, $to_host, $to_port, %args) = @_;
171 my $timeout = delete $args{timeout} || $connect_timeout;
173 # Create a connection end-point object
176 my $rproc = delete $args{rproc};
177 $conn = $pkg->new($rproc);
179 $conn->{peerhost} = $to_host;
180 $conn->{peerport} = $to_port;
181 $conn->{sort} = 'Outgoing';
183 dbg((ref $conn) . " connecting $conn->{cnum} to $to_host:$to_port") if isdbg('connll');
186 $conn->{sock} = $sock = Mojo::IOLoop::Client->new;
187 $sock->on(connect => sub {
188 $conn->_on_connect($_[1])
190 $sock->on(error => sub {
191 &{$conn->{eproc}}($conn, $_[1]) if exists $conn->{eproc};
192 delete $conn->{sock};
195 $sock->on(close => sub {
196 delete $conn->{sock};
200 # copy any args like on_connect, on_disconnect etc
201 while (my ($k, $v) = each %args) {
205 $sock->connect(address => $to_host, port => $to_port, timeout => $timeout);
212 my ($conn, $line, $sort) = @_;
215 # local $^F = 10000; # make sure it ain't closed on exec
216 # my ($a, $b) = $io_socket->socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC);
221 # if (defined $pid) {
224 # $conn->{sock} = $a;
225 # $conn->{csort} = $sort;
226 # $conn->{lineend} = "\cM" if $sort eq 'ax25';
227 # $conn->{pid} = $pid;
228 # if ($conn->{rproc}) {
229 # my $callback = sub {$conn->_rcv};
230 # Msg::set_event_handler ($a, read => $callback);
232 # dbg("connect $conn->{cnum}: started pid: $conn->{pid} as $line") if isdbg('connect');
239 # *STDIN = IO::File->new_from_fd($b, 'r') or die;
240 # *STDOUT = IO::File->new_from_fd($b, 'w') or die;
241 # *STDERR = IO::File->new_from_fd($b, 'w') or die;
243 # unless ($main::is_win) {
244 # # $SIG{HUP} = 'IGNORE';
245 # $SIG{HUP} = $SIG{CHLD} = $SIG{TERM} = $SIG{INT} = 'DEFAULT';
248 # exec "$line" or dbg("exec '$line' failed $!");
251 # dbg("cannot fork for $line");
254 # dbg("no socket pair $! for $line");
262 my $count = $conn->{disconnecting}++;
263 my $dbg = isdbg('connll');
264 my ($pkg, $fn, $line) = caller if $dbg;
267 dbg((ref $conn) . "::disconnect on call $conn->{call} attempt $conn->{disconnecting} called from ${pkg}::${fn} line $line FORCING CLOSE ") if $dbg;
271 dbg((ref $conn) . "::disconnect on call $conn->{call} attempt $conn->{disconnecting} called from ${pkg}::${fn} line $line ") if $dbg;
274 # remove this conn from the active queue
275 # be careful to delete the correct one
277 if ($call = $conn->{call}) {
278 my $ref = $conns{$call};
279 delete $conns{$call} if $ref && $ref == $conn;
281 $call ||= 'unallocated';
283 $delqueue{$conn} = $conn; # save this connection until everything is finished
284 my $sock = $conn->{sock};
286 if ($sock->{buffer}) {
287 my $lth = length $sock->{buffer};
288 Mojo::IOLoop->timer($disc_waittime, sub {
289 dbg("Buffer contained $lth characters, coordinated for $disc_waittime secs, now disconnecting $call") if $dbg;
293 dbg("Buffer empty, just close $call") if $dbg;
297 dbg((ref $conn) . " socket missing on $conn->{call}") if $dbg;
305 my $sock = delete $conn->{sock};
306 $conn->{state} = 'E';
307 $conn->{timeout}->del if $conn->{timeout};
309 my $call = $conn->{call};
311 if (isdbg('connll')) {
312 my ($pkg, $fn, $line) = caller;
313 dbg((ref $conn) . "::_close_it on call $conn->{call} attempt $conn->{disconnecting} called from ${pkg}::${fn} line $line ");
317 dbg((ref $conn) . " Connection $conn->{cnum} $call starting to close") if isdbg('connll');
319 if ($conn->{on_disconnect}) {
320 &{$conn->{on_disconnect}}($conn);
324 dbg((ref $conn) . " Connection $conn->{cnum} $call closing gracefully") if isdbg('connll');
325 $sock->close_gracefully;
328 # get rid of any references
330 if (ref($conn->{$_})) {
335 delete $delqueue{$conn}; # finally remove the $conn
337 unless ($main::is_win) {
338 kill 'TERM', $conn->{pid} if exists $conn->{pid};
345 my $rq = $conn->{outqueue};
346 my $sock = $conn->{sock};
347 return unless defined $sock;
348 return if $conn->{disconnecting};
351 my $data = shift @$rq;
352 my $lth = length $data;
353 my $call = $conn->{call} || 'none';
356 dbgdump('raw', "$call send $lth: ", $lth);
363 dbg("_send_stuff $call ending data ignored: $data");
369 my ($conn, $msg) = @_;
370 $conn->enqueue($msg);
380 my ($conn, $msg) = @_;
381 push @{$conn->{outqueue}}, $msg;
387 push @{$conn->{outqueue}}, defined $_[0] ? $_[0] : '';
398 $conn->{sock}->on(drain => sub {$conn->disconnect;});
401 #-----------------------------------------------------------------
402 # Receive side routines
406 # @_ == 4 || die "Msg->new_server (myhost, myport, login_proc)\n";
407 my ($pkg, $my_host, $my_port, $login_proc) = @_;
408 my $conn = $pkg->new($login_proc);
410 my $sock = $conn->{sock} = Mojo::IOLoop::Server->new;
411 $sock->on(accept=>sub{$conn->new_client($_[1]);});
412 $sock->listen(address=>$my_host, port=>$my_port);
415 die "Could not create socket: $! \n" unless $conn->{sock};
428 return if $conn->{disconnecting};
430 if ($conn->{msg} =~ /\cJ/) {
431 my @lines = split /\cM?\cJ/, $conn->{msg};
432 if ($conn->{msg} =~ /\cM?\cJ$/) {
435 $conn->{msg} = pop @lines;
438 last if $conn->{disconnecting};
439 &{$conn->{rproc}}($conn, defined $_ ? $_ : '');
444 sub _rcv { # Complement to _send
445 my $conn = shift; # $rcv_now complement of $flush
447 my $sock = $conn->{sock};
448 return unless defined($sock);
449 return if $conn->{disconnecting};
451 $total_in += length $msg;
455 my $call = $conn->{call} || 'none';
456 my $lth = length $msg;
457 dbgdump('raw', "$call read $lth: ", $msg);
460 my @ch = split //, $msg;
465 $conn->{msg} =~ s/.$//;
472 $conn->send_raw($out);
475 $conn->{msg} .= $msg;
478 unless ($conn->{disable_read}) {
479 $conn->dequeue if exists $conn->{msg};
484 my $server_conn = shift;
487 my $conn = $server_conn->new($server_conn->{rproc});
488 my $sock = $conn->{sock} = Mojo::IOLoop::Stream->new($handle);
489 $sock->on(read => sub {$conn->_rcv($_[1])});
492 $conn->{peerhost} = $handle->peerhost;
493 $conn->{peerhost} =~ s|^::ffff:||; # chop off leading pseudo IPV6 stuff on dual stack listeners
494 $conn->{peerport} = $handle->peerport;
495 dbg((ref $conn) . " accept $conn->{cnum} from $conn->{peerhost}:$conn->{peerport}") if isdbg('connll');
496 my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost}, $conn->{peerport});
497 $conn->{sort} = 'Incoming';
499 $conn->{eproc} = $eproc;
502 $conn->{rproc} = $rproc;
503 } else { # Login failed
504 &{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
513 delete $conn->{sock};
516 # close all clients (this is for forking really)
517 sub close_all_clients
519 foreach my $conn (values %conns) {
527 return defined $_[0] ? $conn->{disable_read} = $_[0] : $_[0];
532 #----------------------------------------------------
533 # Event loop routines used by both client and server
535 sub set_event_handler {
538 my ($pkg, $fn, $line) = caller;
540 foreach (my ($k,$v) = each %args) {
544 dbg("Msg::set_event_handler called from ${pkg}::${fn} line $line doing $s");
549 my ($pkg, $interval) = @_;
551 while (time - $now < $interval) {
559 my $call = $conn->{call} || 'unallocated';
561 if (isdbg('connll')) {
562 my ($pkg, $fn, $line) = caller;
563 dbg((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');