X-Git-Url: http://gb7djk.dxcluster.net/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FMsg.pm;h=d62cb744034377f54592a3a7233571f9e88f842d;hb=06a6935d583a684869129350fed170d467ad8acc;hp=e1ece5b93c35e932e118308785b6d8d7ca3e478f;hpb=6b19958cbe351af8d5462f4e0e03b87875eec16a;p=spider.git

diff --git a/perl/Msg.pm b/perl/Msg.pm
index e1ece5b9..d62cb744 100644
--- a/perl/Msg.pm
+++ b/perl/Msg.pm
@@ -5,333 +5,469 @@
 #
 # I have modified it to suit my devious purposes (Dirk Koopman G1TLH)
 #
-# $Id$
+#
 #
 
 package Msg;
 
-require Exporter;
-@ISA = qw(Exporter);
-
 use strict;
-use IO::Select;
-use IO::Socket;
-use Carp;
-
-use vars qw (%rd_callbacks %wt_callbacks $rd_handles $wt_handles);
-
-%rd_callbacks = ();
-%wt_callbacks = ();
-$rd_handles   = IO::Select->new();
-$wt_handles   = IO::Select->new();
-my $blocking_supported = 0;
-
-BEGIN {
-    # Checks if blocking is supported
-    eval {
-        require POSIX; POSIX->import(qw (F_SETFL O_NONBLOCK EAGAIN));
+
+use DXUtil;
+
+use Mojo::IOLoop;
+use Mojo::IOLoop::Stream;
+
+use DXDebug;
+use Timer;
+
+use vars qw($now %conns $noconns $cnum $total_in $total_out);
+
+$total_in = $total_out = 0;
+
+$now = time;
+
+$cnum = 0;
+
+
+#
+#-----------------------------------------------------------------
+# Generalised initializer
+
+sub new
+{
+    my ($pkg, $rproc) = @_;
+	my $obj = ref($pkg);
+	my $class = $obj || $pkg;
+
+    my $conn = {
+        rproc => $rproc,
+		inqueue => [],
+		outqueue => [],
+		state => 0,
+		lineend => "\r\n",
+		csort => 'telnet',
+		timeval => 60,
+		blocking => 0,
+		cnum => (($cnum < 999) ? (++$cnum) : ($cnum = 1)),
     };
-    $blocking_supported = 1 unless $@;
+
+	$noconns++;
+	
+	dbg("$class Connection created (total $noconns)") if isdbg('connll');
+	return bless $conn, $class;
+}
+
+sub set_error
+{
+	my $conn = shift;
+	my $callback = shift;
+	$conn->{sock}->on(error => sub {my ($stream, $err) = @_; $callback->($conn, $err);});
+}
+
+sub set_on_eof
+{
+	my $conn = shift;
+	my $callback = shift;
+	$conn->{sock}->on(close => sub {$callback->($conn);});
+}
+
+sub set_rproc
+{
+	my $conn = shift;
+	my $callback = shift;
+	$conn->{rproc} = $callback;
+}
+
+# save it
+sub conns
+{
+	my $pkg = shift;
+	my $call = shift;
+	my $ref;
+	
+	if (ref $pkg) {
+		$call = $pkg->{call} unless $call;
+		return undef unless $call;
+		dbg((ref $pkg) . " changing $pkg->{call} to $call") if isdbg('connll') && exists $pkg->{call} && $call ne $pkg->{call};
+		delete $conns{$pkg->{call}} if exists $pkg->{call} && exists $conns{$pkg->{call}} && $pkg->{call} ne $call; 
+		$pkg->{call} = $call;
+		$ref = $conns{$call} = $pkg;
+		dbg((ref $pkg) . " Connection $pkg->{cnum} $call stored") if isdbg('connll');
+	} else {
+		$ref = $conns{$call};
+	}
+	return $ref;
+}
+
+# this is only called by any dependent processes going away unexpectedly
+sub pid_gone
+{
+	my ($pkg, $pid) = @_;
+	
+	my @pid = grep {$_->{pid} == $pid} values %conns;
+	foreach my $p (@pid) {
+		&{$p->{eproc}}($p, "$pid has gorn") if exists $p->{eproc};
+		$p->disconnect;
+	}
+}
+
+sub ax25
+{
+	my $conn = shift;
+	return $conn->{csort} eq 'ax25';
+}
+
+sub peerhost
+{
+	my $conn = shift;
+	$conn->{peerhost} ||= 'ax25' if $conn->ax25;
+	$conn->{peerhost} ||= $conn->{sock}->handle->peerhost if $conn->{sock};
+	$conn->{peerhost} ||= 'UNKNOWN';
+	return $conn->{peerhost};
 }
 
 #-----------------------------------------------------------------
 # Send side routines
 sub connect {
-    my ($pkg, $to_host, $to_port,$rcvd_notification_proc) = @_;
-    
-    # Create a new internet socket
-    
-    my $sock = IO::Socket::INET->new (
-                                      PeerAddr => $to_host,
-                                      PeerPort => $to_port,
-                                      Proto    => 'tcp',
-                                      Reuse    => 1);
-
-    return undef unless $sock;
+    my ($pkg, $to_host, $to_port, $rproc) = @_;
 
     # Create a connection end-point object
-    my $conn = {
-        sock                   => $sock,
-        rcvd_notification_proc => $rcvd_notification_proc,
-    };
-    
-    if ($rcvd_notification_proc) {
-        my $callback = sub {_rcv($conn, 0)};
-        set_event_handler ($sock, "read" => $callback);
+    my $conn = $pkg;
+	unless (ref $pkg) {
+		$conn = $pkg->new($rproc);
+	}
+	$conn->{peerhost} = $to_host;
+	$conn->{peerport} = $to_port;
+	$conn->{sort} = 'Outgoing';
+
+	dbg((ref $conn) . " connecting $conn->{cnum} to $to_host:$to_port") if isdbg('connll');
+	
+	my $sock;
+	$conn->{sock} = $sock = Mojo::IOLoop::Client->new;
+	$sock->on(connect => sub { dbg((ref $conn) . " connected $conn->{cnum} to $to_host:$to_port") if isdbg('connll');}, 
+			  error => {$conn->disconnect},
+			  close => {$conn->disconnect});
+	
+	$sock->connect(address => $to_host, port => $to_port);
+	
+	dbg((ref $conn) . " connected $conn->{cnum} to $to_host:$to_port") if isdbg('connll');
+
+    if ($conn->{rproc}) {
+		$sock->on(read => sub {my ($stream, $msg) = @_; $conn->_rcv($msg);} );
     }
-    return bless $conn, $pkg;
+    return $conn;
+}
+
+sub start_program
+{
+	my ($conn, $line, $sort) = @_;
+	my $pid;
+	
+#	local $^F = 10000;		# make sure it ain't closed on exec
+#	my ($a, $b) = $io_socket->socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC);
+#	if ($a && $b) {
+#		$a->autoflush(1);
+#		$b->autoflush(1);
+#		$pid = fork;
+#		if (defined $pid) {
+#			if ($pid) {
+#				close $b;
+#				$conn->{sock} = $a;
+#				$conn->{csort} = $sort;
+#				$conn->{lineend} = "\cM" if $sort eq 'ax25';
+#				$conn->{pid} = $pid;
+#				if ($conn->{rproc}) {
+#					my $callback = sub {$conn->_rcv};
+#					Msg::set_event_handler ($a, read => $callback);
+#				}
+#				dbg("connect $conn->{cnum}: started pid: $conn->{pid} as $line") if isdbg('connect');
+#			} else {
+#				$^W = 0;
+#				dbgclose();
+#				STDIN->close;
+#				STDOUT->close;
+#				STDOUT->close;
+#				*STDIN = IO::File->new_from_fd($b, 'r') or die;
+#				*STDOUT = IO::File->new_from_fd($b, 'w') or die;
+#				*STDERR = IO::File->new_from_fd($b, 'w') or die;
+#				close $a;
+#				unless ($main::is_win) {
+#					#						$SIG{HUP} = 'IGNORE';
+#					$SIG{HUP} = $SIG{CHLD} = $SIG{TERM} = $SIG{INT} = 'DEFAULT';
+#					alarm(0);
+#				}
+#				exec "$line" or dbg("exec '$line' failed $!");
+#			} 
+#		} else {
+#			dbg("cannot fork for $line");
+#		}
+#	} else {
+#		dbg("no socket pair $! for $line");
+#	}
+	return $pid;
 }
 
-sub disconnect {
+sub disconnect 
+{
     my $conn = shift;
+	return if exists $conn->{disconnecting};
+
+	$conn->{disconnecting} = 1;
     my $sock = delete $conn->{sock};
-    return unless defined($sock);
-    set_event_handler ($sock, "read" => undef, "write" => undef);
-    shutdown($sock, 3);
-	close($sock);
-}
+	$conn->{state} = 'E';
+	$conn->{timeout}->del if $conn->{timeout};
 
-sub send_now {
-    my ($conn, $msg) = @_;
-    _enqueue ($conn, $msg);
-    $conn->_send (1); # 1 ==> flush
+	# be careful to delete the correct one
+	my $call;
+	if ($call = $conn->{call}) {
+		my $ref = $conns{$call};
+		delete $conns{$call} if $ref && $ref == $conn;
+	}
+	$call ||= 'unallocated';
+	dbg((ref $conn) . " Connection $conn->{cnum} $call disconnected") if isdbg('connll');
+	
+	# get rid of any references
+	for (keys %$conn) {
+		if (ref($conn->{$_})) {
+			delete $conn->{$_};
+		}
+	}
+
+	if (defined($sock)) {
+		$sock->remove;
+	}
+	
+	unless ($main::is_win) {
+		kill 'TERM', $conn->{pid} if exists $conn->{pid};
+	}
 }
 
-sub send_later {
-    my ($conn, $msg) = @_;
-    _enqueue($conn, $msg);
+sub _send_stuff
+{
+	my $conn = shift;
+	my $rq = $conn->{outqueue};
     my $sock = $conn->{sock};
-    return unless defined($sock);
-    set_event_handler ($sock, "write" => sub {$conn->_send(0)});
+	while (@$rq) {
+		my $data = shift @$rq;
+		my $lth = length $data;
+		my $call = $conn->{call} || 'none';
+		if (isdbg('raw')) {
+			if (isdbg('raw')) {
+				dbgdump('raw', "$call send $lth: ", $lth);
+			}
+		}
+		if (defined $sock && !$sock->destroyed) {
+			$sock->write($data);
+			$total_out = $lth;
+		} else {
+			dbg("_send_stuff $call ending data ignored: $data");
+		}
+	}
 }
 
-sub _enqueue {
+sub send_now {
     my ($conn, $msg) = @_;
-    # prepend length (encoded as network long)
-    my $len = length($msg);
-    $msg = pack ('N', $len) . $msg; 
-    push (@{$conn->{queue}}, $msg);
+    $conn->enqueue($msg);
+    _send_stuff($conn);
 }
 
-sub _send {
-    my ($conn, $flush) = @_;
-    my $sock = $conn->{sock};
-    return unless defined($sock);
-    my ($rq) = $conn->{queue};
-
-    # If $flush is set, set the socket to blocking, and send all
-    # messages in the queue - return only if there's an error
-    # If $flush is 0 (deferred mode) make the socket non-blocking, and
-    # return to the event loop only after every message, or if it
-    # is likely to block in the middle of a message.
-
-    $flush ? $conn->set_blocking() : $conn->set_non_blocking();
-    my $offset = (exists $conn->{send_offset}) ? $conn->{send_offset} : 0;
-
-    while (@$rq) {
-        my $msg            = $rq->[0];
-        my $bytes_to_write = length($msg) - $offset;
-        my $bytes_written  = 0;
-        while ($bytes_to_write) {
-            $bytes_written = syswrite ($sock, $msg,
-                                       $bytes_to_write, $offset);
-            if (!defined($bytes_written)) {
-                if (_err_will_block($!)) {
-                    # Should happen only in deferred mode. Record how
-                    # much we have already sent.
-                    $conn->{send_offset} = $offset;
-                    # Event handler should already be set, so we will
-                    # be called back eventually, and will resume sending
-                    return 1;
-                } else {    # Uh, oh
-                    $conn->handle_send_err($!);
-                    return 0; # fail. Message remains in queue ..
-                }
-            }
-            $offset         += $bytes_written;
-            $bytes_to_write -= $bytes_written;
-        }
-        delete $conn->{send_offset};
-        $offset = 0;
-        shift @$rq;
-        last unless $flush; # Go back to select and wait
-                            # for it to fire again.
-    }
-    # Call me back if queue has not been drained.
-    if (@$rq) {
-        set_event_handler ($sock, "write" => sub {$conn->_send(0)});
-    } else {
-        set_event_handler ($sock, "write" => undef);
-    }
-    1;  # Success
+sub send_later {
+	goto &send_now;
 }
 
-sub _err_will_block {
-    if ($blocking_supported) {
-        return ($_[0] == EAGAIN());
-    }
-    return 0;
-}
-sub set_non_blocking {                        # $conn->set_blocking
-    if ($blocking_supported) {
-        # preserve other fcntl flags
-        my $flags = fcntl ($_[0], F_GETFL(), 0);
-        fcntl ($_[0], F_SETFL(), $flags | O_NONBLOCK());
-    }
+sub enqueue {
+    my $conn = shift;
+    push @{$conn->{outqueue}}, defined $_[0] ? $_[0] : '';
 }
-sub set_blocking {
-    if ($blocking_supported) {
-        my $flags = fcntl ($_[0], F_GETFL(), 0);
-        $flags  &= ~O_NONBLOCK(); # Clear blocking, but preserve other flags
-        fcntl ($_[0], F_SETFL(), $flags);
-    }
+
+sub _err_will_block 
+{
+	return 0;
 }
-sub handle_send_err {
-   # For more meaningful handling of send errors, subclass Msg and
-   # rebless $conn.  
-   my ($conn, $err_msg) = @_;
-   warn "Error while sending: $err_msg \n";
-   set_event_handler ($conn->{sock}, "write" => undef);
+
+sub close_on_empty
+{
+	my $conn = shift;
+	$conn->{sock}->on(drain => sub {$conn->disconnect;});
 }
 
 #-----------------------------------------------------------------
 # Receive side routines
 
-my ($g_login_proc,$g_pkg);
-my $main_socket = 0;
-sub new_server {
-    @_ == 4 || die "Msg->new_server (myhost, myport, login_proc)\n";
-    my ($pkg, $my_host, $my_port, $login_proc) = @_;
-    
-    $main_socket = IO::Socket::INET->new (
-                                          LocalAddr => $my_host,
-                                          LocalPort => $my_port,
-                                          Listen    => 5,
-                                          Proto     => 'tcp',
-                                          Reuse     => 1);
-    die "Could not create socket: $! \n" unless $main_socket;
-    set_event_handler ($main_socket, "read" => \&_new_client);
-    $g_login_proc = $login_proc; $g_pkg = $pkg;
+sub new_server 
+{
+#    @_ == 4 || die "Msg->new_server (myhost, myport, login_proc)\n";
+	my ($pkg, $my_host, $my_port, $login_proc) = @_;
+	my $conn = $pkg->new($login_proc);
+	
+    $conn->{sock} = Mojo::IOLoop::Server->new;
+	$conn->{sock}->on(accept=>sub{$conn->new_client()});
+	$conn->{sock}->listen(address=>$my_host, port=>$my_port);
+	
+    die "Could not create socket: $! \n" unless $conn->{sock};
+	return $conn;
 }
 
-sub rcv_now {
-    my ($conn) = @_;
-    my ($msg, $err) = _rcv ($conn, 1); # 1 ==> rcv now
-    return wantarray ? ($msg, $err) : $msg;
+
+sub nolinger
+{
+	my $conn = shift;
+}
+
+sub dequeue
+{
+	my $conn = shift;
+	return if $conn->{disconnecting};
+	
+	if ($conn->{msg} =~ /\cJ/) {
+		my @lines = split /\cM?\cJ/, $conn->{msg};
+		if ($conn->{msg} =~ /\cM?\cJ$/) {
+			delete $conn->{msg};
+		} else {
+			$conn->{msg} = pop @lines;
+		}
+		for (@lines) {
+			last if $conn->{disconnecting};
+			&{$conn->{rproc}}($conn, defined $_ ? $_ : '');
+		}
+	}
 }
 
 sub _rcv {                     # Complement to _send
-    my ($conn, $rcv_now) = @_; # $rcv_now complement of $flush
+    my $conn = shift; # $rcv_now complement of $flush
     # Find out how much has already been received, if at all
     my ($msg, $offset, $bytes_to_read, $bytes_read);
     my $sock = $conn->{sock};
     return unless defined($sock);
-    if (exists $conn->{msg}) {
-        $msg           = $conn->{msg};
-        $offset        = length($msg) - 1;  # sysread appends to it.
-        $bytes_to_read = $conn->{bytes_to_read};
-        delete $conn->{'msg'};              # have made a copy
-    } else {
-        # The typical case ...
-        $msg           = "";                # Otherwise -w complains 
-        $offset        = 0 ;  
-        $bytes_to_read = 0 ;                # Will get set soon
-    }
-    # We want to read the message length in blocking mode. Quite
-    # unlikely that we'll get blocked too long reading 4 bytes
-    if (!$bytes_to_read)  {                 # Get new length 
-        my $buf;
-        $conn->set_blocking();
-        $bytes_read = sysread($sock, $buf, 4);
-        if ($! || ($bytes_read != 4)) {
-            goto FINISH;
-        }
-        $bytes_to_read = unpack ('N', $buf);
-    }
-    $conn->set_non_blocking() unless $rcv_now;
-    while ($bytes_to_read) {
-        $bytes_read = sysread ($sock, $msg, $bytes_to_read, $offset);
-        if (defined ($bytes_read)) {
-            if ($bytes_read == 0) {
-                last;
-            }
-            $bytes_to_read -= $bytes_read;
-            $offset        += $bytes_read;
-        } else {
-            if (_err_will_block($!)) {
-                # Should come here only in non-blocking mode
-                $conn->{msg}           = $msg;
-                $conn->{bytes_to_read} = $bytes_to_read;
-                return ;   # .. _rcv will be called later
-                           # when socket is readable again
-            } else {
-                last;
-            }
-        }
-    }
 
-  FINISH:
-    if (length($msg) == 0) {
-        $conn->disconnect();
+	my @lines;
+#	if ($conn->{blocking}) {
+#		blocking($sock, 0);
+#		$conn->{blocking} = 0;
+#	}
+	$bytes_read = sysread ($sock, $msg, 1024, 0);
+	if (defined ($bytes_read)) {
+		if ($bytes_read > 0) {
+			$total_in += $bytes_read;
+			if (isdbg('raw')) {
+				my $call = $conn->{call} || 'none';
+				dbgdump('raw', "$call read $bytes_read: ", $msg);
+			}
+			if ($conn->{echo}) {
+				my @ch = split //, $msg;
+				my $out;
+				for (@ch) {
+					if (/[\cH\x7f]/) {
+						$out .= "\cH \cH";
+						$conn->{msg} =~ s/.$//;
+					} else {
+						$out .= $_;
+						$conn->{msg} .= $_;
+					}
+				}
+				if (defined $out) {
+					set_event_handler ($sock, write => sub{$conn->_send(0)});
+					push @{$conn->{outqueue}}, $out;
+				}
+			} else {
+				$conn->{msg} .= $msg;
+			}
+		} 
+	} else {
+		if (_err_will_block($!)) {
+			return ; 
+		} else {
+			$bytes_read = 0;
+		}
     }
-    if ($rcv_now) {
-        return ($msg, $!);
+
+FINISH:
+    if (defined $bytes_read && $bytes_read == 0) {
+		&{$conn->{eproc}}($conn, $!) if exists $conn->{eproc};
+		$conn->disconnect;
     } else {
-        &{$conn->{rcvd_notification_proc}}($conn, $msg, $!);
-    }
+		unless ($conn->{disable_read}) {
+			$conn->dequeue if exists $conn->{msg};
+		}
+	}
 }
 
-sub _new_client {
-    my $sock = $main_socket->accept();
-    my $conn = bless {
-        'sock' =>  $sock,
-        'state' => 'connected'
-    }, $g_pkg;
-    my $rcvd_notification_proc =
-        &$g_login_proc ($conn, $sock->peerhost(), $sock->peerport());
-    if ($rcvd_notification_proc) {
-        $conn->{rcvd_notification_proc} = $rcvd_notification_proc;
-        my $callback = sub {_rcv($conn,0)};
-        set_event_handler ($sock, "read" => $callback);
-    } else {  # Login failed
-        $conn->disconnect();
-    }
+sub new_client {
+	my $server_conn = shift;
+	my $client = shift;
+	
+	my $conn = $server_conn->new($server_conn->{rproc});
+	my $sock = $conn->{sock} = Mojo::IOLoop::Stream->new($client);
+	$sock->on(read => sub {$conn->_rcv($_[1])});
+	dbg((ref $conn) . "accept $conn->{cnum} from $conn->{peerhost} $conn->{peerport}") if isdbg('connll');
+
+	my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost} = $client->peerhost, $conn->{peerport} = $client->peerport);
+	$conn->{sort} = 'Incoming';
+	if ($eproc) {
+		$conn->{eproc} = $eproc;
+	}
+	if ($rproc) {
+		$conn->{rproc} = $rproc;
+	} else {  # Login failed
+		&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
+		$conn->disconnect();
+	}
 }
 
 sub close_server
 {
-	set_event_handler ($main_socket, "read" => undef);
-	$main_socket->close;
-	$main_socket = 0;
+	my $conn = shift;
+	delete $conn->{sock};
+}
+
+# close all clients (this is for forking really)
+sub close_all_clients
+{
+	foreach my $conn (values %conns) {
+		$conn->disconnect;
+	}
 }
 
+sub disable_read
+{
+	my $conn = shift;
+	return defined $_[0] ? $conn->{disable_read} = $_[0] : $_[0];
+}
+
+
+#
 #----------------------------------------------------
 # Event loop routines used by both client and server
 
 sub set_event_handler {
-    shift unless ref($_[0]); # shift if first arg is package name
-    my ($handle, %args) = @_;
-    my $callback;
-    if (exists $args{'write'}) {
-        $callback = $args{'write'};
-        if ($callback) {
-            $wt_callbacks{$handle} = $callback;
-            $wt_handles->add($handle);
-        } else {
-            delete $wt_callbacks{$handle};
-            $wt_handles->remove($handle);
-        }
-    }
-    if (exists $args{'read'}) {
-        $callback = $args{'read'};
-        if ($callback) {
-            $rd_callbacks{$handle} = $callback;
-            $rd_handles->add($handle);
-        } else {
-            delete $rd_callbacks{$handle};
-            $rd_handles->remove($handle);
-       }
-    }
+	my $sock = shift;
+	my %args = @_;
+	my ($pkg, $fn, $line) = caller;
+	my $s;
+	foreach (my ($k,$v) = each %args) {
+		$s .= "$k => $v, ";
+	}
+	$s =~ s/[\s,]$//;
+	dbg("Msg::set_event_handler called from ${pkg}::${fn} line $line doing $s");
 }
 
-sub event_loop {
-    my ($pkg, $loop_count, $timeout) = @_; # event_loop(1) to process events once
-    my ($conn, $r, $w, $rset, $wset);
-    while (1) {
-        # Quit the loop if no handles left to process
-        last unless ($rd_handles->count() || $wt_handles->count());
-        ($rset, $wset) =
-            IO::Select->select ($rd_handles, $wt_handles, undef, $timeout);
-        foreach $r (@$rset) {
-            &{$rd_callbacks{$r}} ($r) if exists $rd_callbacks{$r};
-        }
-        foreach $w (@$wset) {
-            &{$wt_callbacks{$w}}($w) if exists $wt_callbacks{$w};
-        }
-        if (defined($loop_count)) {
-            last unless --$loop_count;
-        }
-    }
+sub sleep
+{
+	my ($pkg, $interval) = @_;
+	my $now = time;
+	while (time - $now < $interval) {
+		sleep 1;
+	}
+}
+
+sub DESTROY
+{
+	my $conn = shift;
+	my $call = $conn->{call} || 'unallocated';
+	my $host = $conn->{peerhost} || '';
+	my $port = $conn->{peerport} || '';
+	$noconns--;
+	dbg((ref $conn) . " Connection $conn->{cnum} $call [$host $port] being destroyed (total $noconns)") if isdbg('connll');
 }
 
 1;