mirror of
git://scm.dxcluster.org/scm/spider
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392 lines
9.7 KiB
Perl
392 lines
9.7 KiB
Perl
#
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# This class is the internal subclass that deals with the external port
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# communications for Msg.pm
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#
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# This is where the cluster handles direct connections coming both in
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# and out
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#
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#
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# Copyright (c) 2001 - Dirk Koopman G1TLH
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#
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# Modified Jan 2006 by John Wiseman G8BPQ to support connections to BPQ32 node,
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# and fix pattern matching on 'chat' abort handling
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#
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package ExtMsg;
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use strict;
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use Msg;
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use DXVars;
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use DXUtil;
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use DXDebug;
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use IO::File;
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use IO::Socket;
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use IPC::Open3;
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use vars qw(@ISA $deftimeout);
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@ISA = qw(Msg);
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$deftimeout = 60;
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sub login
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{
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goto &main::login; # save some writing, this was the default
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}
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sub enqueue
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{
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my ($conn, $msg) = @_;
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unless ($msg =~ /^[ABZ]/) {
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if ($msg =~ /^E[-\w]+\|([01])/ && $conn->{csort} eq 'telnet') {
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$conn->{echo} = $1;
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if ($1) {
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# $conn->send_raw("\xFF\xFC\x01");
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} else {
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# $conn->send_raw("\xFF\xFB\x01");
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}
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} else {
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$msg =~ s/^[-\w]+\|//;
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push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
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}
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}
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}
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sub send_raw
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{
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my ($conn, $msg) = @_;
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my $sock = $conn->{sock};
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return unless defined($sock);
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push (@{$conn->{outqueue}}, $msg);
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dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
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Msg::set_event_handler ($sock, "write" => sub {$conn->_send(0)});
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}
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sub echo
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{
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my $conn = shift;
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$conn->{echo} = shift;
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}
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sub dequeue
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{
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my $conn = shift;
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my $msg;
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if ($conn->ax25 && exists $conn->{msg}) {
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$conn->{msg} =~ s/\cM/\cJ/g;
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}
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if ($conn->{state} eq 'WC') {
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if (exists $conn->{cmd}) {
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if (@{$conn->{cmd}}) {
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dbg("connect $conn->{cnum}: $conn->{msg}") if isdbg('connect');
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$conn->_docmd($conn->{msg});
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}
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}
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if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
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$conn->to_connected($conn->{call}, 'O', $conn->{csort});
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}
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} elsif ($conn->{msg} =~ /\cJ/) {
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my @lines = $conn->{msg} =~ /([^\cM\cJ]*)\cM?\cJ/g;
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if ($conn->{msg} =~ /\cJ$/) {
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delete $conn->{msg};
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} else {
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$conn->{msg} =~ s/([^\cM\cJ]*)\cM?\cJ//g;
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}
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while (defined ($msg = shift @lines)) {
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dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
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$msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
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# $msg =~ s/[\x00-\x08\x0a-\x19\x1b-\x1f\x80-\x9f]/./g; # immutable CSI sequence + control characters
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if ($conn->{state} eq 'C') {
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&{$conn->{rproc}}($conn, "I$conn->{call}|$msg");
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} elsif ($conn->{state} eq 'WL' ) {
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$msg = uc $msg;
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if (is_callsign($msg) && $msg !~ m|/| ) {
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my $sort = $conn->{csort};
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$sort = 'local' if $conn->{peerhost} =~ /127\.\d+\.\d+\.\d+$/ || $conn->{peerhost} eq '::1';
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my $uref;
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if ($main::passwdreq || ($uref = DXUser::get_current($msg)) && $uref->passwd ) {
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$conn->conns($msg);
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$conn->{state} = 'WP';
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$conn->{decho} = $conn->{echo};
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$conn->{echo} = 0;
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$conn->send_raw('password: ');
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} else {
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$conn->to_connected($msg, 'A', $sort);
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}
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} else {
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$conn->send_now("Sorry $msg is an invalid callsign");
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$conn->disconnect;
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}
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} elsif ($conn->{state} eq 'WP' ) {
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my $uref = DXUser::get_current($conn->{call});
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$msg =~ s/[\r\n]+$//;
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if ($uref && $msg eq $uref->passwd) {
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my $sort = $conn->{csort};
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$conn->{echo} = $conn->{decho};
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delete $conn->{decho};
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$sort = 'local' if $conn->{peerhost} =~ /127\.\d+\.\d+\.\d+$/ || $conn->{peerhost} eq '::1';
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$conn->{usedpasswd} = 1;
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$conn->to_connected($conn->{call}, 'A', $sort);
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} else {
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$conn->send_now("Sorry");
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$conn->disconnect;
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}
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} elsif ($conn->{state} eq 'WC') {
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if (exists $conn->{cmd} && @{$conn->{cmd}}) {
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$conn->_docmd($msg);
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if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
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$conn->to_connected($conn->{call}, 'O', $conn->{csort});
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}
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}
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}
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}
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}
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}
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sub to_connected
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{
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my ($conn, $call, $dir, $sort) = @_;
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$conn->{state} = 'C';
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$conn->conns($call);
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delete $conn->{cmd};
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$conn->{timeout}->del if $conn->{timeout};
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delete $conn->{timeout};
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$conn->{csort} = $sort;
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unless ($conn->ax25) {
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eval {$conn->{peerhost} = $conn->{sock}->peerhost};
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$conn->nolinger;
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}
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&{$conn->{rproc}}($conn, "$dir$call|$sort");
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$conn->_send_file("$main::data/connected") unless $conn->{outgoing};
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}
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sub new_client {
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my $server_conn = shift;
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my $sock = $server_conn->{sock}->accept();
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if ($sock) {
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my $conn = $server_conn->new($server_conn->{rproc});
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$conn->{sock} = $sock;
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$conn->nolinger;
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Msg::blocking($sock, 0);
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$conn->{blocking} = 0;
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eval {$conn->{peerhost} = $sock->peerhost};
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if ($@) {
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dbg($@) if isdbg('connll');
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$conn->disconnect;
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} else {
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eval {$conn->{peerport} = $sock->peerport};
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$conn->{peerport} = 0 if $@;
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my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost}, $conn->{peerport});
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dbg("accept $conn->{cnum} from $conn->{peerhost} $conn->{peerport}") if isdbg('connll');
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if ($eproc) {
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$conn->{eproc} = $eproc;
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Msg::set_event_handler ($sock, "error" => $eproc);
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}
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if ($rproc) {
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$conn->{rproc} = $rproc;
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my $callback = sub {$conn->_rcv};
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Msg::set_event_handler ($sock, "read" => $callback);
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# send login prompt
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$conn->{state} = 'WL';
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# $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
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# $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
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# $conn->send_raw("\xFF\xFC\x01");
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$conn->_send_file("$main::data/issue");
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$conn->send_raw("login: ");
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$conn->_dotimeout(60);
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$conn->{echo} = 1;
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} else {
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&{$conn->{eproc}}() if $conn->{eproc};
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$conn->disconnect();
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}
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}
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} else {
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dbg("ExtMsg: error on accept ($!)") if isdbg('err');
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}
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}
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sub start_connect
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{
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my $call = shift;
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my $fn = shift;
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my $conn = ExtMsg->new(\&main::new_channel);
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$conn->{outgoing} = 1;
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$conn->conns($call);
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my $f = new IO::File $fn;
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push @{$conn->{cmd}}, <$f>;
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$f->close;
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$conn->{state} = 'WC';
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$conn->_dotimeout($deftimeout);
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$conn->_docmd;
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}
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sub _docmd
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{
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my $conn = shift;
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my $msg = shift;
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my $cmd;
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while ($cmd = shift @{$conn->{cmd}}) {
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chomp $cmd;
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next if $cmd =~ /^\s*\#/o;
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next if $cmd =~ /^\s*$/o;
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$conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
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$conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
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$conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
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if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
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unless ($conn->_doconnect($1, $2)) {
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$conn->disconnect;
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@{$conn->{cmd}} = []; # empty any further commands
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last;
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}
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}
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if ($cmd =~ /^\s*\'([^\']*)\'\s+\'([^\']*)\'/) {
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$conn->_dochat($cmd, $msg, $1, $2);
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last;
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}
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if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
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$conn->_doclient($1);
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last;
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}
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last if $conn->{state} eq 'E';
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}
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}
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sub _doconnect
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{
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my ($conn, $sort, $line) = @_;
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my $r;
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$sort = lc $sort;
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dbg("CONNECT $conn->{cnum} sort: $sort command: $line") if isdbg('connect');
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if ($sort eq 'telnet') {
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# this is a straight network connect
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my ($host, $port) = split /\s+/, $line;
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$port = 23 if !$port;
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$r = $conn->connect($host, $port);
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if ($r) {
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dbg("Connected $conn->{cnum} to $host $port") if isdbg('connect');
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} else {
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dbg("***Connect $conn->{cnum} Failed to $host $port $!") if isdbg('connect');
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}
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} elsif ($sort eq 'agw') {
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# turn it into an AGW object
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bless $conn, 'AGWMsg';
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$r = $conn->connect($line);
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} elsif ($sort eq 'bpq') {
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# turn it into an BPQ object
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bless $conn, 'BPQMsg';
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$r = $conn->connect($line);
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} elsif ($sort eq 'ax25' || $sort eq 'prog') {
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$r = $conn->start_program($line, $sort);
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} else {
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dbg("invalid type of connection ($sort)");
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}
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$conn->disconnect unless $r;
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return $r;
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}
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sub _doabort
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{
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my $conn = shift;
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my $string = shift;
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dbg("connect $conn->{cnum}: abort $string") if isdbg('connect');
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$conn->{abort} = $string;
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}
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sub _dotimeout
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{
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my $conn = shift;
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my $val = shift;
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dbg("connect $conn->{cnum}: timeout set to $val") if isdbg('connect');
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$conn->{timeout}->del if $conn->{timeout};
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$conn->{timeval} = $val;
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$conn->{timeout} = Timer->new($val, sub{ &_timedout($conn) });
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}
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sub _dolineend
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{
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my $conn = shift;
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my $val = shift;
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dbg("connect $conn->{cnum}: lineend set to $val ") if isdbg('connect');
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$val =~ s/\\r/\r/g;
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$val =~ s/\\n/\n/g;
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$conn->{lineend} = $val;
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}
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sub _dochat
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{
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my $conn = shift;
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my $cmd = shift;
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my $line = shift;
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my $expect = shift;
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my $send = shift;
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if ($line) {
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if ($expect) {
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dbg("connect $conn->{cnum}: expecting: \"$expect\" received: \"$line\"") if isdbg('connect');
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if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
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dbg("connect $conn->{cnum}: aborted on /$conn->{abort}/") if isdbg('connect');
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$conn->disconnect;
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delete $conn->{cmd};
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return;
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}
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if ($line =~ /\Q$expect/i) {
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if (length $send) {
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dbg("connect $conn->{cnum}: got: \"$expect\" sending: \"$send\"") if isdbg('connect');
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$conn->send_later("D$conn->{call}|$send");
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}
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delete $conn->{msg}; # get rid any input if a match
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return;
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}
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}
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}
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$conn->{state} = 'WC';
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unshift @{$conn->{cmd}}, $cmd;
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}
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sub _timedout
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{
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my $conn = shift;
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dbg("connect $conn->{cnum}: timed out after $conn->{timeval} seconds") if isdbg('connect');
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$conn->disconnect;
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}
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# handle callsign and connection type firtling
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sub _doclient
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{
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my $conn = shift;
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my $line = shift;
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my @f = split /\s+/, $line;
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my $call = uc $f[0] if $f[0];
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$conn->conns($call);
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$conn->{csort} = $f[1] if $f[1];
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$conn->{state} = 'C';
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eval {$conn->{peerhost} = $conn->{sock}->peerhost} unless $conn->ax25;
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&{$conn->{rproc}}($conn, "O$call|$conn->{csort}");
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delete $conn->{cmd};
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$conn->{timeout}->del if $conn->{timeout};
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}
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sub _send_file
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{
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my $conn = shift;
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my $fn = shift;
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if (-e $fn) {
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my $f = new IO::File $fn;
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if ($f) {
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while (<$f>) {
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chomp;
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my $l = $_;
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dbg("connect $conn->{cnum}: $l") if isdbg('connll');
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$conn->send_raw($l . $conn->{lineend});
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}
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$f->close;
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}
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}
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}
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