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