perl/ExtMsg.pm

   1 #
   2 # This class is the internal subclass that deals with the external port
   3 # communications for Msg.pm
   4 #
   5 # This is where the cluster handles direct connections coming both in
   6 # and out
   7 #
   8 # $Id$
   9 #
  10 # Copyright (c) 2001 - Dirk Koopman G1TLH
  11 #
  12
  13 package ExtMsg;
  14
  15 use strict;
  16 use Msg;
  17 use DXVars;
  18 use DXUtil;
  19 use DXDebug;
  20 use IO::File;
  21 use IO::Socket;
  22
  23 use vars qw(@ISA $deftimeout);
  24
  25 @ISA = qw(Msg);
  26 $deftimeout = 60;
  27
  28 sub enqueue
  29 {
  30         my ($conn, $msg) = @_;
  31         unless ($msg =~ /^[ABZ]/) {
  32                 if ($msg =~ /^E[-\w]+\|([01])/ && $conn->{csort} eq 'telnet') {
  33                         $conn->{echo} = $1;
  34                         if ($1) {
  35 #                               $conn->send_raw("\xFF\xFC\x01");
  36                         } else {
  37 #                               $conn->send_raw("\xFF\xFB\x01");
  38                         }
  39                 } else {
  40                         $msg =~ s/^[-\w]+\|//;
  41                         push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
  42                 }
  43         }
  44 }
  45
  46 sub send_raw
  47 {
  48         my ($conn, $msg) = @_;
  49     my $sock = $conn->{sock};
  50     return unless defined($sock);
  51         push (@{$conn->{outqueue}}, $msg);
  52         dbg('connect', $msg) unless $conn->{state} eq 'C';
  53     Msg::set_event_handler ($sock, "write" => sub {$conn->_send(0)});
  54 }
  55
  56 sub dequeue
  57 {
  58         my $conn = shift;
  59         my $msg;
  60
  61         if ($conn->{state} eq 'WC') {
  62                 if (exists $conn->{cmd}) {
  63                         if (@{$conn->{cmd}}) {
  64                                 dbg('connect', $conn->{msg});
  65                                 $conn->_docmd($conn->{msg});
  66                         }
  67                 }
  68                 if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
  69                         $conn->to_connected($conn->{call}, 'O', 'telnet');
  70                 }
  71         } elsif ($conn->{msg} =~ /\n/) {
  72                 my @lines = split /\r?\n/, $conn->{msg};
  73                 if ($conn->{msg} =~ /\n$/) {
  74                         delete $conn->{msg};
  75                 } else {
  76                         $conn->{msg} = pop @lines;
  77                 }
  78                 while (defined ($msg = shift @lines)) {
  79                         dbg('connect', $msg) unless $conn->{state} eq 'C';
  80
  81                         $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
  82                         $msg =~ s/[\x00-\x08\x0a-\x1f\x80-\x9f]/./g;         # immutable CSI sequence + control characters
  83
  84                         if ($conn->{state} eq 'C') {
  85                                 &{$conn->{rproc}}($conn, "I$conn->{call}|$msg");
  86                         } elsif ($conn->{state} eq 'WL' ) {
  87                                 $msg = uc $msg;
  88                                 if (is_callsign($msg)) {
  89                                         $conn->to_connected($msg, 'A', 'telnet');
  90                                 } else {
  91                                         $conn->send_now("Sorry $msg is an invalid callsign");
  92                                         $conn->disconnect;
  93                                 }
  94                         } elsif ($conn->{state} eq 'WC') {
  95                                 if (exists $conn->{cmd} && @{$conn->{cmd}}) {
  96                                         $conn->_docmd($msg);
  97                                         if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
  98                                                 $conn->to_connected($conn->{call}, 'O', 'telnet');
  99                                         }
 100                                 }
 101                         }
 102                 }
 103         }
 104 }
 105
 106 sub to_connected
 107 {
 108         my ($conn, $call, $dir, $sort) = @_;
 109         $conn->{state} = 'C';
 110         $conn->conns($call);
 111         delete $conn->{cmd};
 112         $conn->{timeout}->del if $conn->{timeout};
 113         delete $conn->{timeout};
 114         $conn->_send_file("$main::data/connected");
 115         &{$conn->{rproc}}($conn, "$dir$call|$sort");
 116 }
 117
 118 sub new_client {
 119         my $server_conn = shift;
 120     my $sock = $server_conn->{sock}->accept();
 121     my $conn = $server_conn->new($server_conn->{rproc});
 122         $conn->{sock} = $sock;
 123
 124     my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost} = $sock->peerhost(), $conn->{peerport} = $sock->peerport());
 125         if ($eproc) {
 126                 $conn->{eproc} = $eproc;
 127         Msg::set_event_handler ($sock, "error" => $eproc);
 128         }
 129     if ($rproc) {
 130         $conn->{rproc} = $rproc;
 131         my $callback = sub {$conn->_rcv};
 132                 Msg::set_event_handler ($sock, "read" => $callback);
 133                 # send login prompt
 134                 $conn->{state} = 'WL';
 135 #               $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
 136 #               $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
 137 #               $conn->send_raw("\xFF\xFC\x01");
 138                 $conn->_send_file("$main::data/issue");
 139                 $conn->send_raw("login: ");
 140                 $conn->_dotimeout(60);
 141     } else {
 142         $conn->disconnect();
 143     }
 144 }
 145
 146 sub start_connect
 147 {
 148         my $call = shift;
 149         my $fn = shift;
 150         my $conn = ExtMsg->new(\&main::new_channel);
 151         $conn->conns($call);
 152
 153         my $f = new IO::File $fn;
 154         push @{$conn->{cmd}}, <$f>;
 155         $f->close;
 156         $conn->_dotimeout($deftimeout);
 157         $conn->_docmd;
 158 }
 159
 160 sub _docmd
 161 {
 162         my $conn = shift;
 163         my $msg = shift;
 164         my $cmd;
 165
 166         while ($cmd = shift @{$conn->{cmd}}) {
 167                 chomp $cmd;
 168                 next if $cmd =~ /^\s*\#/o;
 169                 next if $cmd =~ /^\s*$/o;
 170                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
 171                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
 172                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
 173                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
 174                         unless ($conn->_doconnect($1, $2)) {
 175                                 $conn->disconnect;
 176                                 @{$conn->{cmd}} = [];    # empty any further commands
 177                                 last;
 178                         }
 179                 }
 180                 if ($cmd =~ /^\s*\'.*\'\s+\'.*\'/i) {
 181                         $conn->_dochat($cmd, $msg);
 182                         last;
 183                 }
 184                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
 185                         $conn->_doclient($1);
 186                         last;
 187                 }
 188                 last if $conn->{state} eq 'E';
 189         }
 190 }
 191
 192 sub _doconnect
 193 {
 194         my ($conn, $sort, $line) = @_;
 195         my $r;
 196
 197         dbg('connect', "CONNECT sort: $sort command: $line");
 198         if ($sort eq 'telnet') {
 199                 # this is a straight network connect
 200                 my ($host, $port) = split /\s+/, $line;
 201                 $port = 23 if !$port;
 202                 $r = $conn->connect($host, $port);
 203                 if ($r) {
 204                         dbg('connect', "Connected to $host $port");
 205                 } else {
 206                         dbg('connect', "***Connect Failed to $host $port $!");
 207                 }
 208         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
 209                 ;
 210         } else {
 211                 dbg('err', "invalid type of connection ($sort)");
 212                 $conn->disconnect;
 213         }
 214         return $r;
 215 }
 216
 217 sub _doabort
 218 {
 219         my $conn = shift;
 220         my $string = shift;
 221         dbg('connect', "abort $string");
 222         $conn->{abort} = $string;
 223 }
 224
 225 sub _dotimeout
 226 {
 227         my $conn = shift;
 228         my $val = shift;
 229         dbg('connect', "timeout set to $val");
 230         $conn->{timeout}->del if $conn->{timeout};
 231         $conn->{timeval} = $val;
 232         $conn->{timeout} = Timer->new($val, sub{ &_timedout($conn) });
 233 }
 234
 235 sub _dolineend
 236 {
 237         my $conn = shift;
 238         my $val = shift;
 239         dbg('connect', "lineend set to $val ");
 240         $val =~ s/\\r/\r/g;
 241         $val =~ s/\\n/\n/g;
 242         $conn->{lineend} = $val;
 243 }
 244
 245 sub _dochat
 246 {
 247         my $conn = shift;
 248         my $cmd = shift;
 249         my $line = shift;
 250
 251         if ($line) {
 252                 my ($expect, $send) = $cmd =~ /^\s*\'(.*)\'\s+\'(.*)\'/;
 253                 if ($expect) {
 254                         dbg('connect', "expecting: \"$expect\" received: \"$line\"");
 255                         if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
 256                                 dbg('connect', "aborted on /$conn->{abort}/");
 257                                 $conn->disconnect;
 258                                 delete $conn->{cmd};
 259                                 return;
 260                         }
 261                         if ($line =~ /$expect/i) {
 262                                 dbg('connect', "got: \"$expect\" sending: \"$send\"");
 263                                 $conn->send_later($send);
 264                                 return;
 265                         }
 266                 }
 267         }
 268         $conn->{state} = 'WC';
 269         unshift @{$conn->{cmd}}, $cmd;
 270 }
 271
 272 sub _timedout
 273 {
 274         my $conn = shift;
 275         dbg('connect', "timed out after $conn->{timeval} seconds");
 276         $conn->{timeout}->del;
 277         delete $conn->{timeout};
 278         $conn->disconnect;
 279 }
 280
 281 # handle callsign and connection type firtling
 282 sub _doclient
 283 {
 284         my $conn = shift;
 285         my $line = shift;
 286         my @f = split /\s+/, $line;
 287         my $call = uc $f[0] if $f[0];
 288         $conn->conns($call);
 289         $conn->{csort} = $f[1] if $f[1];
 290         $conn->{state} = 'C';
 291         &{$conn->{rproc}}($conn, "O$call|telnet");
 292         delete $conn->{cmd};
 293         $conn->{timeout}->del if $conn->{timeout};
 294 }
 295
 296 sub _send_file
 297 {
 298         my $conn = shift;
 299         my $fn = shift;
 300
 301         if (-e $fn) {
 302                 my $f = new IO::File $fn;
 303                 if ($f) {
 304                         while (<$f>) {
 305                                 chomp;
 306                                 $conn->send_raw($_ . $conn->{lineend});
 307                         }
 308                         $f->close;
 309                 }
 310         }
 311 }