#
# I have modified it to suit my devious purposes (Dirk Koopman G1TLH)
#
-# $Id$
+#
#
package Msg;
use strict;
-use IO::Select;
-use IO::Socket;
+
+use DXUtil;
+
use DXDebug;
use Timer;
-use vars qw(%rd_callbacks %wt_callbacks %er_callbacks $rd_handles $wt_handles $er_handles $now %conns $noconns);
+use vars qw(%rd_callbacks %wt_callbacks %er_callbacks $rd_handles $wt_handles $er_handles $now %conns $noconns $blocking_supported $cnum $total_in $total_out $io_socket);
%rd_callbacks = ();
%wt_callbacks = ();
$rd_handles = IO::Select->new();
$wt_handles = IO::Select->new();
$er_handles = IO::Select->new();
+$total_in = $total_out = 0;
$now = time;
-my $blocking_supported = 0;
BEGIN {
# Checks if blocking is supported
eval {
- require POSIX; POSIX->import(qw (F_SETFL F_GETFL O_NONBLOCK));
+ local $^W;
+ require POSIX; POSIX->import(qw(O_NONBLOCK F_SETFL F_GETFL))
};
- $blocking_supported = 1 unless $@;
+
+ eval {
+ local $^W;
+ require IO::Socket::INET6;
+ };
+
+ if ($@) {
+ dbg($@);
+ require IO::Socket;
+ $io_socket = 'IO::Socket::INET';
+ } else {
+ $io_socket = 'IO::Socket::INET6';
+ }
+ $io_socket->import;
+
+ if ($@ || $main::is_win) {
+ $blocking_supported = $io_socket->can('blocking') ? 2 : 0;
+ } else {
+ $blocking_supported = $io_socket->can('blocking') ? 2 : 1;
+ }
+
# import as many of these errno values as are available
eval {
+ local $^W;
require Errno; Errno->import(qw(EAGAIN EINPROGRESS EWOULDBLOCK));
};
+
+ unless ($^O eq 'MSWin32') {
+ if ($] >= 5.6) {
+ eval {
+ local $^W;
+ require Socket; Socket->import(qw(IPPROTO_TCP TCP_NODELAY));
+ };
+ } else {
+ dbg("IPPROTO_TCP and TCP_NODELAY manually defined");
+ eval 'sub IPPROTO_TCP { 6 };';
+ eval 'sub TCP_NODELAY { 1 };';
+ }
+ }
+ # http://support.microsoft.com/support/kb/articles/Q150/5/37.asp
+ # defines EINPROGRESS as 10035. We provide it here because some
+ # Win32 users report POSIX::EINPROGRESS is not vendor-supported.
+ if ($^O eq 'MSWin32') {
+ eval '*EINPROGRESS = sub { 10036 };' unless defined *EINPROGRESS;
+ eval '*EWOULDBLOCK = *EAGAIN = sub { 10035 };' unless defined *EWOULDBLOCK;
+ eval '*F_GETFL = sub { 0 };' unless defined *F_GETFL;
+ eval '*F_SETFL = sub { 0 };' unless defined *F_SETFL;
+ eval 'sub IPPROTO_TCP { 6 };';
+ eval 'sub TCP_NODELAY { 1 };';
+ $blocking_supported = 0; # it appears that this DOESN'T work :-(
+ }
}
my $w = $^W;
my $einprogress = eval {EINPROGRESS()};
my $ewouldblock = eval {EWOULDBLOCK()};
$^W = $w;
+$cnum = 0;
+
#
#-----------------------------------------------------------------
lineend => "\r\n",
csort => 'telnet',
timeval => 60,
+ blocking => 0,
+ cnum => (($cnum < 999) ? (++$cnum) : ($cnum = 1)),
};
$noconns++;
- dbg('connll', "Connection created ($noconns)");
+
+ dbg("Connection created ($noconns)") if isdbg('connll');
return bless $conn, $class;
}
sub blocking
{
return unless $blocking_supported;
-
- my $flags = fcntl ($_[0], F_GETFL, 0);
- if ($_[1]) {
- $flags &= ~O_NONBLOCK;
+
+ # Make the handle stop blocking, the Windows way.
+ if ($blocking_supported) {
+ $_[0]->blocking($_[1]);
} else {
- $flags |= O_NONBLOCK;
+ my $flags = fcntl ($_[0], F_GETFL, 0);
+ if ($_[1]) {
+ $flags &= ~O_NONBLOCK;
+ } else {
+ $flags |= O_NONBLOCK;
+ }
+ fcntl ($_[0], F_SETFL, $flags);
}
- fcntl ($_[0], F_SETFL, $flags);
}
# save it
if (ref $pkg) {
$call = $pkg->{call} unless $call;
return undef unless $call;
- confess "changing $pkg->{call} to $call" if exists $pkg->{call} && $call ne $pkg->{call};
+ dbg("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('connll', "Connection $call stored");
+ dbg("Connection $pkg->{cnum} $call stored") if isdbg('connll');
} else {
$ref = $conns{$call};
}
my ($pkg, $pid) = @_;
my @pid = grep {$_->{pid} == $pid} values %conns;
- for (@pid) {
- &{$_->{eproc}}($_, "$pid has gorn") if exists $_->{eproc};
- $_->disconnect;
+ 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}->peerhost if $conn->{sock} && $conn->{sock}->isa('IO::Socket::INET');
+ $conn->{peerhost} ||= 'UNKNOWN';
+ return $conn->{peerhost};
+}
+
#-----------------------------------------------------------------
# Send side routines
sub connect {
$conn->{peerport} = $to_port;
$conn->{sort} = 'Outgoing';
- # Create a new internet socket
- my $sock = IO::Socket::INET->new();
- return undef unless $sock;
-
- my $proto = getprotobyname('tcp');
- $sock->socket(AF_INET, SOCK_STREAM, $proto) or return undef;
-
- blocking($sock, 0);
- my $ip = gethostbyname($to_host);
-# my $r = $sock->connect($to_port, $ip);
- my $r = connect($sock, pack_sockaddr_in($to_port, $ip));
- return undef unless $r || _err_will_block($!);
+ my $sock;
+ if ($blocking_supported) {
+ $sock = $io_socket->new(PeerAddr => $to_host, PeerPort => $to_port, Proto => 'tcp', Blocking =>0) or return undef;
+ } else {
+ # Create a new internet socket
+ $sock = $io_socket->new();
+ return undef unless $sock;
+
+ my $proto = getprotobyname('tcp');
+ $sock->socket(AF_INET, SOCK_STREAM, $proto) or return undef;
+
+ blocking($sock, 0);
+ $conn->{blocking} = 0;
+
+ # does the host resolve?
+ my $ip = gethostbyname($to_host);
+ return undef unless $ip;
+
+ my $r = connect($sock, pack_sockaddr_in($to_port, $ip));
+ return undef unless $r || _err_will_block($!);
+ }
$conn->{sock} = $sock;
-
+ $conn->{peerhost} = $sock->peerhost; # for consistency
+
if ($conn->{rproc}) {
my $callback = sub {$conn->_rcv};
set_event_handler ($sock, read => $callback);
return $conn;
}
-sub disconnect {
+sub start_program
+{
+ my ($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
+{
my $conn = shift;
return if exists $conn->{disconnecting};
delete $conns{$call} if $ref && $ref == $conn;
}
$call ||= 'unallocated';
- dbg('connll', "Connection $call disconnected");
+ dbg("Connection $conn->{cnum} $call disconnected") if isdbg('connll');
- unless ($^O =~ /^MS/i) {
- kill 'TERM', $conn->{pid} if exists $conn->{pid};
- }
-
# get rid of any references
for (keys %$conn) {
if (ref($conn->{$_})) {
}
}
- return unless defined($sock);
- set_event_handler ($sock, read => undef, write => undef, error => undef);
- shutdown($sock, 3);
- close($sock);
+ if (defined($sock)) {
+ set_event_handler ($sock, read => undef, write => undef, error => undef);
+ shutdown($sock, 2);
+ close($sock);
+ }
+
+ unless ($main::is_win) {
+ kill 'TERM', $conn->{pid} if exists $conn->{pid};
+ }
}
sub send_now {
# return to the event loop only after every message, or if it
# is likely to block in the middle of a message.
- blocking($sock, $flush);
+# if ($conn->{blocking} != $flush) {
+# blocking($sock, $flush);
+# $conn->{blocking} = $flush;
+# }
my $offset = (exists $conn->{send_offset}) ? $conn->{send_offset} : 0;
while (@$rq) {
$conn->disconnect;
return 0; # fail. Message remains in queue ..
}
- }
+ } elsif (isdbg('raw')) {
+ my $call = $conn->{call} || 'none';
+ dbgdump('raw', "$call send $bytes_written: ", $msg);
+ }
+ $total_out += $bytes_written;
$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
+ #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 {
+ unless (@$rq) {
set_event_handler ($sock, write => undef);
if (exists $conn->{close_on_empty}) {
&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
1; # Success
}
+sub dup_sock
+{
+ my $conn = shift;
+ my $oldsock = $conn->{sock};
+ my $rc = $rd_callbacks{$oldsock};
+ my $wc = $wt_callbacks{$oldsock};
+ my $ec = $er_callbacks{$oldsock};
+ my $sock = $oldsock->new_from_fd($oldsock, "w+");
+ if ($sock) {
+ set_event_handler($oldsock, read=>undef, write=>undef, error=>undef);
+ $conn->{sock} = $sock;
+ set_event_handler($sock, read=>$rc, write=>$wc, error=>$ec);
+ $oldsock->close;
+ }
+}
+
sub _err_will_block {
return 0 unless $blocking_supported;
return ($_[0] == $eagain || $_[0] == $ewouldblock || $_[0] == $einprogress);
my ($pkg, $my_host, $my_port, $login_proc) = @_;
my $self = $pkg->new($login_proc);
- $self->{sock} = IO::Socket::INET->new (
- LocalAddr => $my_host,
- LocalPort => $my_port,
+ $self->{sock} = $io_socket->new (
+ LocalAddr => "$my_host:$my_port",
+# LocalPort => $my_port,
Listen => SOMAXCONN,
Proto => 'tcp',
- Reuse => 1);
+ Reuse => 1);
die "Could not create socket: $! \n" unless $self->{sock};
set_event_handler ($self->{sock}, read => sub { $self->new_client } );
return $self;
}
+
+sub nolinger
+{
+ my $conn = shift;
+
+ unless ($main::is_win) {
+ if (isdbg('sock')) {
+ my ($l, $t) = unpack "ll", getsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER);
+ my $k = unpack 'l', getsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE);
+ my $n = $main::is_win ? 0 : unpack "l", getsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY);
+ dbg("Linger is: $l $t, keepalive: $k, nagle: $n");
+ }
+
+ eval {setsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE, 1)} or dbg("setsockopt keepalive: $!");
+ eval {setsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER, pack("ll", 0, 0))} or dbg("setsockopt linger: $!");
+ eval {setsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY, 1)} or eval {setsockopt($conn->{sock}, SOL_SOCKET, TCP_NODELAY, 1)} or dbg("setsockopt tcp_nodelay: $!");
+ $conn->{sock}->autoflush(0);
+
+ if (isdbg('sock')) {
+ my ($l, $t) = unpack "ll", getsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER);
+ my $k = unpack 'l', getsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE);
+ my $n = $main::is_win ? 0 : unpack "l", getsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY);
+ dbg("Linger is: $l $t, keepalive: $k, nagle: $n");
+ }
+ }
+}
+
sub dequeue
{
my $conn = shift;
return unless defined($sock);
my @lines;
- blocking($sock, 0);
+# if ($conn->{blocking}) {
+# blocking($sock, 0);
+# $conn->{blocking} = 0;
+# }
$bytes_read = sysread ($sock, $msg, 1024, 0);
if (defined ($bytes_read)) {
if ($bytes_read > 0) {
- $conn->{msg} .= $msg;
+ $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} .= $msg;
+ }
}
} else {
if (_err_will_block($!)) {
&{$conn->{eproc}}($conn, $!) if exists $conn->{eproc};
$conn->disconnect;
} else {
- $conn->dequeue if exists $conn->{msg};
+ unless ($conn->{disable_read}) {
+ $conn->dequeue if exists $conn->{msg};
+ }
}
}
sub new_client {
my $server_conn = shift;
my $sock = $server_conn->{sock}->accept();
- my $conn = $server_conn->new($server_conn->{rproc});
- $conn->{sock} = $sock;
- my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost} = $sock->peerhost(), $conn->{peerport} = $sock->peerport());
- $conn->{sort} = 'Incoming';
- if ($eproc) {
- $conn->{eproc} = $eproc;
- set_event_handler ($sock, error => $eproc);
+ if ($sock) {
+ my $conn = $server_conn->new($server_conn->{rproc});
+ $conn->{sock} = $sock;
+ blocking($sock, 0);
+ $conn->nolinger;
+ $conn->{blocking} = 0;
+ my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost} = $sock->peerhost(), $conn->{peerport} = $sock->peerport());
+ $conn->{sort} = 'Incoming';
+ if ($eproc) {
+ $conn->{eproc} = $eproc;
+ set_event_handler ($sock, error => $eproc);
+ }
+ if ($rproc) {
+ $conn->{rproc} = $rproc;
+ my $callback = sub {$conn->_rcv};
+ set_event_handler ($sock, read => $callback);
+ } else { # Login failed
+ &{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
+ $conn->disconnect();
+ }
+ } else {
+ dbg("Msg: error on accept ($!)") if isdbg('err');
}
- if ($rproc) {
- $conn->{rproc} = $rproc;
- my $callback = sub {$conn->_rcv};
- set_event_handler ($sock, read => $callback);
- } else { # Login failed
- &{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
- $conn->disconnect();
- }
}
sub close_server
# close all clients (this is for forking really)
sub close_all_clients
{
- for (values %conns) {
- $_->disconnect;
+ foreach my $conn (values %conns) {
+ $conn->disconnect;
}
}
+sub disable_read
+{
+ my $conn = shift;
+ set_event_handler ($conn->{sock}, read => undef);
+ return $_[0] ? $conn->{disable_read} = $_[0] : $_[0];
+}
+
+#
#----------------------------------------------------
# Event loop routines used by both client and server
}
sub event_loop {
- my ($pkg, $loop_count, $timeout) = @_; # event_loop(1) to process events once
+ my ($pkg, $loop_count, $timeout, $wronly) = @_; # event_loop(1) to process events once
my ($conn, $r, $w, $e, $rset, $wset, $eset);
while (1) {
# Quit the loop if no handles left to process
- last unless ($rd_handles->count() || $wt_handles->count());
+ if ($wronly) {
+ last unless $wt_handles->count();
- ($rset, $wset) = IO::Select->select($rd_handles, $wt_handles, $er_handles, $timeout);
-
- foreach $e (@$eset) {
- &{$er_callbacks{$e}}($e) if exists $er_callbacks{$e};
- }
- foreach $r (@$rset) {
- &{$rd_callbacks{$r}}($r) if exists $rd_callbacks{$r};
- }
- foreach $w (@$wset) {
- &{$wt_callbacks{$w}}($w) if exists $wt_callbacks{$w};
- }
+ ($rset, $wset, $eset) = IO::Select->select(undef, $wt_handles, undef, $timeout);
+
+ foreach $w (@$wset) {
+ &{$wt_callbacks{$w}}($w) if exists $wt_callbacks{$w};
+ }
+ } else {
+
+ last unless ($rd_handles->count() || $wt_handles->count());
+
+ ($rset, $wset, $eset) = IO::Select->select($rd_handles, $wt_handles, $er_handles, $timeout);
+
+ foreach $e (@$eset) {
+ &{$er_callbacks{$e}}($e) if exists $er_callbacks{$e};
+ }
+ foreach $r (@$rset) {
+ &{$rd_callbacks{$r}}($r) if exists $rd_callbacks{$r};
+ }
+ foreach $w (@$wset) {
+ &{$wt_callbacks{$w}}($w) if exists $wt_callbacks{$w};
+ }
+ }
Timer::handler;
}
}
+sub sleep
+{
+ my ($pkg, $interval) = @_;
+ my $now = time;
+ while (time - $now < $interval) {
+ $pkg->event_loop(10, 0.01);
+ }
+}
+
sub DESTROY
{
my $conn = shift;
my $call = $conn->{call} || 'unallocated';
- dbg('connll', "Connection $call being destroyed ($noconns)");
+ my $host = $conn->{peerhost} || '';
+ my $port = $conn->{peerport} || '';
+ dbg("Connection $conn->{cnum} $call [$host $port] being destroyed") if isdbg('connll');
$noconns--;
}
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