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 use IPC::Open3;
  23
  24 use vars qw(@ISA $deftimeout);
  25
  26 @ISA = qw(Msg);
  27 $deftimeout = 60;
  28
  29 sub enqueue
  30 {
  31         my ($conn, $msg) = @_;
  32         unless ($msg =~ /^[ABZ]/) {
  33                 if ($msg =~ /^E[-\w]+\|([01])/ && $conn->{csort} eq 'telnet') {
  34                         $conn->{echo} = $1;
  35                         if ($1) {
  36 #                               $conn->send_raw("\xFF\xFC\x01");
  37                         } else {
  38 #                               $conn->send_raw("\xFF\xFB\x01");
  39                         }
  40                 } else {
  41                         $msg =~ s/^[-\w]+\|//;
  42                         push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
  43                 }
  44         }
  45 }
  46
  47 sub send_raw
  48 {
  49         my ($conn, $msg) = @_;
  50     my $sock = $conn->{sock};
  51     return unless defined($sock);
  52         push (@{$conn->{outqueue}}, $msg);
  53         dbg('connect', $msg) unless $conn->{state} eq 'C';
  54     Msg::set_event_handler ($sock, "write" => sub {$conn->_send(0)});
  55 }
  56
  57 sub dequeue
  58 {
  59         my $conn = shift;
  60         my $msg;
  61
  62         if ($conn->{csort} eq 'ax25' && exists $conn->{msg}) {
  63                 $conn->{msg} =~ s/\cM/\cJ/g;
  64         }
  65         if ($conn->{state} eq 'WC') {
  66                 if (exists $conn->{cmd}) {
  67                         if (@{$conn->{cmd}}) {
  68                                 dbg('connect', $conn->{msg});
  69                                 $conn->_docmd($conn->{msg});
  70                         }
  71                 }
  72                 if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
  73                         $conn->to_connected($conn->{call}, 'O', 'telnet');
  74                 }
  75         } elsif ($conn->{msg} =~ /\cJ/) {
  76                 my @lines =  $conn->{msg} =~ /([^\cM\cJ]*)\cM?\cJ/g;
  77                 if ($conn->{msg} =~ /\cJ$/) {
  78                         delete $conn->{msg};
  79                 } else {
  80                         $conn->{msg} = pop @lines;
  81                 }
  82                 while (defined ($msg = shift @lines)) {
  83                         dbg('connect', $msg) unless $conn->{state} eq 'C';
  84
  85                         $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
  86                         $msg =~ s/[\x00-\x08\x0a-\x19\x1b-\x1f\x80-\x9f]/./g;         # immutable CSI sequence + control characters
  87
  88                         if ($conn->{state} eq 'C') {
  89                                 &{$conn->{rproc}}($conn, "I$conn->{call}|$msg");
  90                         } elsif ($conn->{state} eq 'WL' ) {
  91                                 $msg = uc $msg;
  92                                 if (is_callsign($msg)) {
  93                                         $conn->to_connected($msg, 'A', 'telnet');
  94                                 } else {
  95                                         $conn->send_now("Sorry $msg is an invalid callsign");
  96                                         $conn->disconnect;
  97                                 }
  98                         } elsif ($conn->{state} eq 'WC') {
  99                                 if (exists $conn->{cmd} && @{$conn->{cmd}}) {
 100                                         $conn->_docmd($msg);
 101                                         if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
 102                                                 $conn->to_connected($conn->{call}, 'O', 'telnet');
 103                                         }
 104                                 }
 105                         }
 106                 }
 107         }
 108 }
 109
 110 sub to_connected
 111 {
 112         my ($conn, $call, $dir, $sort) = @_;
 113         $conn->{state} = 'C';
 114         $conn->conns($call);
 115         delete $conn->{cmd};
 116         $conn->{timeout}->del if $conn->{timeout};
 117         delete $conn->{timeout};
 118         $conn->_send_file("$main::data/connected");
 119         &{$conn->{rproc}}($conn, "$dir$call|$sort");
 120 }
 121
 122 sub new_client {
 123         my $server_conn = shift;
 124     my $sock = $server_conn->{sock}->accept();
 125     my $conn = $server_conn->new($server_conn->{rproc});
 126         $conn->{sock} = $sock;
 127
 128     my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost} = $sock->peerhost(), $conn->{peerport} = $sock->peerport());
 129         if ($eproc) {
 130                 $conn->{eproc} = $eproc;
 131         Msg::set_event_handler ($sock, "error" => $eproc);
 132         }
 133     if ($rproc) {
 134         $conn->{rproc} = $rproc;
 135         my $callback = sub {$conn->_rcv};
 136                 Msg::set_event_handler ($sock, "read" => $callback);
 137                 # send login prompt
 138                 $conn->{state} = 'WL';
 139 #               $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
 140 #               $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
 141 #               $conn->send_raw("\xFF\xFC\x01");
 142                 $conn->_send_file("$main::data/issue");
 143                 $conn->send_raw("login: ");
 144                 $conn->_dotimeout(60);
 145     } else {
 146         $conn->disconnect();
 147     }
 148 }
 149
 150 sub start_connect
 151 {
 152         my $call = shift;
 153         my $fn = shift;
 154         my $conn = ExtMsg->new(\&main::new_channel);
 155         $conn->conns($call);
 156
 157         my $f = new IO::File $fn;
 158         push @{$conn->{cmd}}, <$f>;
 159         $f->close;
 160         $conn->_dotimeout($deftimeout);
 161         $conn->_docmd;
 162 }
 163
 164 sub _docmd
 165 {
 166         my $conn = shift;
 167         my $msg = shift;
 168         my $cmd;
 169
 170         while ($cmd = shift @{$conn->{cmd}}) {
 171                 chomp $cmd;
 172                 next if $cmd =~ /^\s*\#/o;
 173                 next if $cmd =~ /^\s*$/o;
 174                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
 175                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
 176                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
 177                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
 178                         unless ($conn->_doconnect($1, $2)) {
 179                                 $conn->disconnect;
 180                                 @{$conn->{cmd}} = [];    # empty any further commands
 181                                 last;
 182                         }
 183                 }
 184                 if ($cmd =~ /^\s*\'.*\'\s+\'.*\'/i) {
 185                         $conn->_dochat($cmd, $msg);
 186                         last;
 187                 }
 188                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
 189                         $conn->_doclient($1);
 190                         last;
 191                 }
 192                 last if $conn->{state} eq 'E';
 193         }
 194 }
 195
 196 sub _doconnect
 197 {
 198         my ($conn, $sort, $line) = @_;
 199         my $r;
 200
 201         $sort = lc $sort;
 202         dbg('connect', "CONNECT sort: $sort command: $line");
 203         if ($sort eq 'telnet') {
 204                 # this is a straight network connect
 205                 my ($host, $port) = split /\s+/, $line;
 206                 $port = 23 if !$port;
 207                 $r = $conn->connect($host, $port);
 208                 if ($r) {
 209                         dbg('connect', "Connected to $host $port");
 210                 } else {
 211                         dbg('connect', "***Connect Failed to $host $port $!");
 212                 }
 213         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
 214                 my $sock = new IO::Socket::INET;
 215                 local *H;
 216                 my $wrt = \*H;
 217
 218                 if ($conn->{pid} = open3("<&$sock", ">&$sock", '', $line)) {
 219                         $conn->{sock} = $sock;
 220                         $conn->{csort} = $sort;
 221                         $conn->{lineend} = "\cM" if $sort eq 'ax25';
 222                         dbg('connect', "started pid: $conn->{pid} as $line");
 223                 } else {
 224                         dbg('connect', "can't start $line $!");
 225                 }
 226         } else {
 227                 dbg('err', "invalid type of connection ($sort)");
 228                 $conn->disconnect;
 229         }
 230         return $r;
 231 }
 232
 233 sub _doabort
 234 {
 235         my $conn = shift;
 236         my $string = shift;
 237         dbg('connect', "abort $string");
 238         $conn->{abort} = $string;
 239 }
 240
 241 sub _dotimeout
 242 {
 243         my $conn = shift;
 244         my $val = shift;
 245         dbg('connect', "timeout set to $val");
 246         $conn->{timeout}->del if $conn->{timeout};
 247         $conn->{timeval} = $val;
 248         $conn->{timeout} = Timer->new($val, sub{ &_timedout($conn) });
 249 }
 250
 251 sub _dolineend
 252 {
 253         my $conn = shift;
 254         my $val = shift;
 255         dbg('connect', "lineend set to $val ");
 256         $val =~ s/\\r/\r/g;
 257         $val =~ s/\\n/\n/g;
 258         $conn->{lineend} = $val;
 259 }
 260
 261 sub _dochat
 262 {
 263         my $conn = shift;
 264         my $cmd = shift;
 265         my $line = shift;
 266
 267         if ($line) {
 268                 my ($expect, $send) = $cmd =~ /^\s*\'(.*)\'\s+\'(.*)\'/;
 269                 if ($expect) {
 270                         dbg('connect', "expecting: \"$expect\" received: \"$line\"");
 271                         if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
 272                                 dbg('connect', "aborted on /$conn->{abort}/");
 273                                 $conn->disconnect;
 274                                 delete $conn->{cmd};
 275                                 return;
 276                         }
 277                         if ($line =~ /$expect/i) {
 278                                 dbg('connect', "got: \"$expect\" sending: \"$send\"");
 279                                 $conn->send_later($send);
 280                                 delete $conn->{msg}; # get rid any input if a match
 281                                 return;
 282                         }
 283                 }
 284         }
 285         $conn->{state} = 'WC';
 286         unshift @{$conn->{cmd}}, $cmd;
 287 }
 288
 289 sub _timedout
 290 {
 291         my $conn = shift;
 292         dbg('connect', "timed out after $conn->{timeval} seconds");
 293         $conn->{timeout}->del;
 294         delete $conn->{timeout};
 295         $conn->disconnect;
 296 }
 297
 298 # handle callsign and connection type firtling
 299 sub _doclient
 300 {
 301         my $conn = shift;
 302         my $line = shift;
 303         my @f = split /\s+/, $line;
 304         my $call = uc $f[0] if $f[0];
 305         $conn->conns($call);
 306         $conn->{csort} = $f[1] if $f[1];
 307         $conn->{state} = 'C';
 308         &{$conn->{rproc}}($conn, "O$call|telnet");
 309         delete $conn->{cmd};
 310         $conn->{timeout}->del if $conn->{timeout};
 311 }
 312
 313 sub _send_file
 314 {
 315         my $conn = shift;
 316         my $fn = shift;
 317
 318         if (-e $fn) {
 319                 my $f = new IO::File $fn;
 320                 if ($f) {
 321                         while (<$f>) {
 322                                 chomp;
 323                                 $conn->send_raw($_ . $conn->{lineend});
 324                         }
 325                         $f->close;
 326                 }
 327         }
 328 }