+#
+# This class is the internal subclass that deals with the external port
+# communications for Msg.pm
+#
+# This is where the cluster handles direct connections coming both in
+# and out
+#
+# $Id$
+#
+# Copyright (c) 2001 - Dirk Koopman G1TLH
+#
+
+package ExtMsg;
+
+use strict;
+use Msg;
+use DXVars;
+use DXUtil;
+use DXDebug;
+use IO::File;
+use IO::Socket;
+
+use vars qw(@ISA $deftimeout);
+
+@ISA = qw(Msg);
+$deftimeout = 60;
+
+sub enqueue
+{
+ my ($conn, $msg) = @_;
+ unless ($msg =~ /^[ABZ]/) {
+ if ($msg =~ /^E[-\w]+\|([01])/) {
+ $conn->{echo} = $1;
+ } else {
+ $msg =~ s/^[-\w]+\|//;
+ push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
+ }
+ }
+}
+
+sub send_raw
+{
+ my ($conn, $msg) = @_;
+ my $sock = $conn->{sock};
+ return unless defined($sock);
+ push (@{$conn->{outqueue}}, $msg);
+ dbg('connect', $msg) unless $conn->{state} eq 'C';
+ Msg::set_event_handler ($sock, "write" => sub {$conn->_send(0)});
+}
+
+sub dequeue
+{
+ my $conn = shift;
+ my $msg;
+
+ while ($msg = shift @{$conn->{inqueue}}){
+ dbg('connect', $msg) unless $conn->{state} eq 'C';
+
+ $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
+ $msg =~ s/[\x00-\x08\x0a-\x1f\x80-\x9f]/./g; # immutable CSI sequence + control characters
+
+ if ($conn->{state} eq 'C') {
+ &{$conn->{rproc}}($conn, "I$conn->{call}|$msg", $!);
+ $! = 0;
+ } elsif ($conn->{state} eq 'WL' ) {
+ $msg = uc $msg;
+ if (is_callsign($msg)) {
+ _send_file($conn, "$main::data/connected");
+ $conn->{call} = $msg;
+ &{$conn->{rproc}}($conn, "A$conn->{call}|telnet");
+ $conn->{state} = 'C';
+ } else {
+ $conn->send_now("Sorry $msg is an invalid callsign");
+ $conn->disconnect;
+ }
+ } elsif ($conn->{state} eq 'WC') {
+ if (exists $conn->{cmd} && @{$conn->{cmd}}) {
+ $conn->_docmd($msg);
+ unless (@{$conn->{cmd}}) {
+ $conn->{state} = 'C';
+ &{$conn->{rproc}}($conn, "O$conn->{call}|telnet");
+ delete $conn->{cmd};
+ $conn->{timeout}->del_timer if $conn->{timeout};
+ }
+ }
+ }
+ }
+ if ($conn->{msg} && $conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}}) {
+ $conn->_docmd($conn->{msg});
+ unless (@{$conn->{cmd}}) {
+ $conn->{state} = 'C';
+ &{$conn->{rproc}}($conn, "O$conn->{call}|telnet");
+ delete $conn->{cmd};
+ $conn->{timeout}->del_timer if $conn->{timeout};
+ }
+ }
+}
+
+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 $rproc = &{$server_conn->{rproc}} ($conn, $sock->peerhost(), $sock->peerport());
+ if ($rproc) {
+ $conn->{rproc} = $rproc;
+ my $callback = sub {$conn->_rcv};
+ Msg::set_event_handler ($sock, "read" => $callback);
+ # send login prompt
+ $conn->{state} = 'WL';
+# $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
+# $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
+ _send_file($conn, "$main::data/issue");
+ $conn->send_raw("Login: ");
+ } else {
+ $conn->disconnect();
+ }
+}
+
+sub start_connect
+{
+ my $call = shift;
+ my $fn = shift;
+ my $conn = ExtMsg->new(\&main::rec);
+ $conn->{call} = $call;
+
+ my $f = new IO::File $fn;
+ push @{$conn->{cmd}}, <$f>;
+ $f->close;
+ push @main::outstanding_connects, {call => $call, conn => $conn};
+ $conn->_dotimeout($deftimeout);
+ $conn->_docmd;
+}
+
+sub _docmd
+{
+ my $conn = shift;
+ my $msg = shift;
+ my $cmd;
+
+ while ($cmd = shift @{$conn->{cmd}}) {
+ chomp $cmd;
+ next if $cmd =~ /^\s*\#/o;
+ next if $cmd =~ /^\s*$/o;
+ $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
+ $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
+ $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
+ if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
+ unless ($conn->_doconnect($1, $2)) {
+ $conn->disconnect;
+ @{$conn->{cmd}} = []; # empty any further commands
+ last;
+ }
+ }
+ if ($cmd =~ /^\s*\'.*\'\s+\'.*\'/i) {
+ $conn->_dochat($cmd, $msg);
+ last;
+ }
+ if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
+ $conn->_doclient($1);
+ last;
+ }
+ last if $conn->{state} eq 'E';
+ }
+ unless (exists $conn->{cmd} && @{$conn->{cmd}}) {
+ @main::outstanding_connects = grep {$_->{call} ne $conn->{call}} @main::outstanding_connects;
+ }
+}
+
+sub _doconnect
+{
+ my ($conn, $sort, $line) = @_;
+ my $r;
+
+ dbg('connect', "CONNECT sort: $sort command: $line");
+ if ($sort eq 'telnet') {
+ # this is a straight network connect
+ my ($host, $port) = split /\s+/, $line;
+ $port = 23 if !$port;
+ $r = $conn->connect($host, $port);
+ if ($r) {
+ dbg('connect', "Connected to $host $port");
+ } else {
+ dbg('connect', "***Connect Failed to $host $port $!");
+ }
+ } elsif ($sort eq 'ax25' || $sort eq 'prog') {
+ ;
+ } else {
+ dbg('err', "invalid type of connection ($sort)");
+ $conn->disconnect;
+ }
+ return $r;
+}
+
+sub _doabort
+{
+ my $conn = shift;
+ my $string = shift;
+ dbg('connect', "abort $string");
+ $conn->{abort} = $string;
+}
+
+sub _dotimeout
+{
+ my $conn = shift;
+ my $val = shift;
+ dbg('connect', "timeout set to $val");
+ $conn->{timeout}->del_timer if $conn->{timeout};
+ $conn->{timeout} = ExtMsg->new_timer($val, sub{ _timeout($conn); });
+ $conn->{timeval} = $val;
+}
+
+sub _dolineend
+{
+ my $conn = shift;
+ my $val = shift;
+ dbg('connect', "lineend set to $val ");
+ $val =~ s/\\r/\r/g;
+ $val =~ s/\\n/\n/g;
+ $conn->{lineend} = $val;
+}
+
+sub _dochat
+{
+ my $conn = shift;
+ my $cmd = shift;
+ my $line = shift;
+
+ if ($line) {
+ my ($expect, $send) = $cmd =~ /^\s*\'(.*)\'\s+\'(.*)\'/;
+ if ($expect) {
+ dbg('connect', "expecting: \"$expect\" received: \"$line\"");
+ if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
+ dbg('connect', "aborted on /$conn->{abort}/");
+ $conn->disconnect;
+ return;
+ }
+ if ($line =~ /$expect/i) {
+ dbg('connect', "got: \"$expect\" sending: \"$send\"");
+ $conn->send_later($send);
+ return;
+ }
+ }
+ }
+ $conn->{state} = 'WC';
+ unshift @{$conn->{cmd}}, $cmd;
+}
+
+sub _timeout
+{
+ my $conn = shift;
+ dbg('connect', "timed out after $conn->{timeval} seconds");
+ $conn->disconnect;
+ @main::outstanding_connects = grep {$_->{call} ne $conn->{call}} @main::outstanding_connects;
+}
+
+# handle callsign and connection type firtling
+sub _doclient
+{
+ my $conn = shift;
+ my $line = shift;
+ my @f = split /\s+/, $line;
+ $conn->{call} = uc $f[0] if $f[0];
+ $conn->{csort} = $f[1] if $f[1];
+}
+
+sub _send_file
+{
+ my $conn = shift;
+ my $fn = shift;
+
+ if (-e $fn) {
+ my $f = new IO::File $fn;
+ if ($f) {
+ while (<$f>) {
+ chomp;
+ $conn->send_later($_);
+ }
+ $f->close;
+ }
+ }
+ $! = undef;
+}
projects / spider.git / commitdiff