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                         $conn->{state} = 'C';
  70                         &{$conn->{rproc}}($conn, "O$conn->{call}|telnet");
  71                         delete $conn->{cmd};
  72                         $conn->{timeout}->del if $conn->{timeout};
  73                 }
  74         } elsif ($conn->{msg} =~ /\n/) {
  75                 my @lines = split /\r?\n/, $conn->{msg};
  76                 if ($conn->{msg} =~ /\n$/) {
  77                         delete $conn->{msg};
  78                 } else {
  79                         $conn->{msg} = pop @lines;
  80                 }
  81                 while (defined ($msg = shift @lines)) {
  82                         dbg('connect', $msg) unless $conn->{state} eq 'C';
  83
  84                         $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
  85                         $msg =~ s/[\x00-\x08\x0a-\x1f\x80-\x9f]/./g;         # immutable CSI sequence + control characters
  86
  87                         if ($conn->{state} eq 'C') {
  88                                 &{$conn->{rproc}}($conn, "I$conn->{call}|$msg");
  89                         } elsif ($conn->{state} eq 'WL' ) {
  90                                 $msg = uc $msg;
  91                                 if (is_callsign($msg)) {
  92                                         &{$conn->{rproc}}($conn, "A$msg|telnet");
  93                                         _send_file($conn, "$main::data/connected");
  94                                         $conn->{state} = 'C';
  95                                 } else {
  96                                         $conn->send_now("Sorry $msg is an invalid callsign");
  97                                         $conn->disconnect;
  98                                 }
  99                         } elsif ($conn->{state} eq 'WC') {
 100                                 if (exists $conn->{cmd} && @{$conn->{cmd}}) {
 101                                         $conn->_docmd($msg);
 102                                         if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
 103                                                 $conn->{state} = 'C';
 104                                                 &{$conn->{rproc}}($conn, "O$conn->{call}|telnet");
 105                                                 delete $conn->{cmd};
 106                                                 $conn->{timeout}->del if $conn->{timeout};
 107                                         }
 108                                 }
 109                         }
 110                 }
 111         }
 112 }
 113
 114 sub new_client {
 115         my $server_conn = shift;
 116     my $sock = $server_conn->{sock}->accept();
 117     my $conn = $server_conn->new($server_conn->{rproc});
 118         $conn->{sock} = $sock;
 119
 120     my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost} = $sock->peerhost(), $conn->{peerport} = $sock->peerport());
 121         if ($eproc) {
 122                 $conn->{eproc} = $eproc;
 123         set_event_handler ($sock, "error" => $eproc);
 124         }
 125     if ($rproc) {
 126         $conn->{rproc} = $rproc;
 127         my $callback = sub {$conn->_rcv};
 128                 Msg::set_event_handler ($sock, "read" => $callback);
 129                 # send login prompt
 130                 $conn->{state} = 'WL';
 131 #               $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
 132 #               $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
 133 #               $conn->send_raw("\xFF\xFC\x01");
 134                 _send_file($conn, "$main::data/issue");
 135                 $conn->send_raw("login: ");
 136     } else {
 137         $conn->disconnect();
 138     }
 139 }
 140
 141 sub start_connect
 142 {
 143         my $call = shift;
 144         my $fn = shift;
 145         my $conn = ExtMsg->new(\&main::rec);
 146         $conn->conns($call);
 147
 148         my $f = new IO::File $fn;
 149         push @{$conn->{cmd}}, <$f>;
 150         $f->close;
 151         $conn->_dotimeout($deftimeout);
 152         $conn->_docmd;
 153 }
 154
 155 sub _docmd
 156 {
 157         my $conn = shift;
 158         my $msg = shift;
 159         my $cmd;
 160
 161         while ($cmd = shift @{$conn->{cmd}}) {
 162                 chomp $cmd;
 163                 next if $cmd =~ /^\s*\#/o;
 164                 next if $cmd =~ /^\s*$/o;
 165                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
 166                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
 167                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
 168                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
 169                         unless ($conn->_doconnect($1, $2)) {
 170                                 $conn->disconnect;
 171                                 @{$conn->{cmd}} = [];    # empty any further commands
 172                                 last;
 173                         }
 174                 }
 175                 if ($cmd =~ /^\s*\'.*\'\s+\'.*\'/i) {
 176                         $conn->_dochat($cmd, $msg);
 177                         last;
 178                 }
 179                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
 180                         $conn->_doclient($1);
 181                         last;
 182                 }
 183                 last if $conn->{state} eq 'E';
 184         }
 185 }
 186
 187 sub _doconnect
 188 {
 189         my ($conn, $sort, $line) = @_;
 190         my $r;
 191
 192         dbg('connect', "CONNECT sort: $sort command: $line");
 193         if ($sort eq 'telnet') {
 194                 # this is a straight network connect
 195                 my ($host, $port) = split /\s+/, $line;
 196                 $port = 23 if !$port;
 197                 $r = $conn->connect($host, $port);
 198                 if ($r) {
 199                         dbg('connect', "Connected to $host $port");
 200                 } else {
 201                         dbg('connect', "***Connect Failed to $host $port $!");
 202                 }
 203         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
 204                 ;
 205         } else {
 206                 dbg('err', "invalid type of connection ($sort)");
 207                 $conn->disconnect;
 208         }
 209         return $r;
 210 }
 211
 212 sub _doabort
 213 {
 214         my $conn = shift;
 215         my $string = shift;
 216         dbg('connect', "abort $string");
 217         $conn->{abort} = $string;
 218 }
 219
 220 sub _dotimeout
 221 {
 222         my $conn = shift;
 223         my $val = shift;
 224         dbg('connect', "timeout set to $val");
 225         my $old = $conn->{timeout}->del if $conn->{timeout};
 226         $conn->{timeout} = Timer->new($val, sub{ &_timeout($conn) });
 227         $conn->{timeval} = $val;
 228 }
 229
 230 sub _dolineend
 231 {
 232         my $conn = shift;
 233         my $val = shift;
 234         dbg('connect', "lineend set to $val ");
 235         $val =~ s/\\r/\r/g;
 236         $val =~ s/\\n/\n/g;
 237         $conn->{lineend} = $val;
 238 }
 239
 240 sub _dochat
 241 {
 242         my $conn = shift;
 243         my $cmd = shift;
 244         my $line = shift;
 245
 246         if ($line) {
 247                 my ($expect, $send) = $cmd =~ /^\s*\'(.*)\'\s+\'(.*)\'/;
 248                 if ($expect) {
 249                         dbg('connect', "expecting: \"$expect\" received: \"$line\"");
 250                         if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
 251                                 dbg('connect', "aborted on /$conn->{abort}/");
 252                                 $conn->disconnect;
 253                                 delete $conn->{cmd};
 254                                 return;
 255                         }
 256                         if ($line =~ /$expect/i) {
 257                                 dbg('connect', "got: \"$expect\" sending: \"$send\"");
 258                                 $conn->send_later($send);
 259                                 return;
 260                         }
 261                 }
 262         }
 263         $conn->{state} = 'WC';
 264         unshift @{$conn->{cmd}}, $cmd;
 265 }
 266
 267 sub _timeout
 268 {
 269         my $conn = shift;
 270         dbg('connect', "timed out after $conn->{timeval} seconds");
 271         $conn->disconnect;
 272 }
 273
 274 # handle callsign and connection type firtling
 275 sub _doclient
 276 {
 277         my $conn = shift;
 278         my $line = shift;
 279         my @f = split /\s+/, $line;
 280         $conn->{call} = uc $f[0] if $f[0];
 281         $conn->{csort} = $f[1] if $f[1];
 282         $conn->{state} = 'C';
 283         &{$conn->{rproc}}($conn, "O$conn->{call}|telnet");
 284         delete $conn->{cmd};
 285         $conn->{timeout}->del if $conn->{timeout};
 286 }
 287
 288 sub _send_file
 289 {
 290         my $conn = shift;
 291         my $fn = shift;
 292
 293         if (-e $fn) {
 294                 my $f = new IO::File $fn;
 295                 if ($f) {
 296                         while (<$f>) {
 297                                 chomp;
 298                                 $conn->send_raw($_ . $conn->{lineend});
 299                         }
 300                         $f->close;
 301                 }
 302         }
 303 }