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 #
   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 $deftimeout = 60;
  28
  29 sub login
  30 {
  31         goto &main::login;        # save some writing, this was the default
  32 }
  33
  34 sub enqueue
  35 {
  36         my ($conn, $msg) = @_;
  37         unless ($msg =~ /^[ABZ]/) {
  38                 if ($msg =~ /^E[-\w]+\|([01])/ && $conn->{csort} eq 'telnet') {
  39                         $conn->{echo} = $1;
  40                         if ($1) {
  41 #                               $conn->send_raw("\xFF\xFC\x01");
  42                         } else {
  43 #                               $conn->send_raw("\xFF\xFB\x01");
  44                         }
  45                 } else {
  46                         $msg =~ s/^[-\w]+\|//;
  47                         push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
  48                 }
  49         }
  50 }
  51
  52 sub send_raw
  53 {
  54         my ($conn, $msg) = @_;
  55     my $sock = $conn->{sock};
  56     return unless defined($sock);
  57         push (@{$conn->{outqueue}}, $msg);
  58         dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
  59     Msg::set_event_handler ($sock, "write" => sub {$conn->_send(0)});
  60 }
  61
  62 sub echo
  63 {
  64         my $conn = shift;
  65         $conn->{echo} = shift;
  66 }
  67
  68 sub dequeue
  69 {
  70         my $conn = shift;
  71         my $msg;
  72
  73         if ($conn->{csort} eq 'ax25' && exists $conn->{msg}) {
  74                 $conn->{msg} =~ s/\cM/\cJ/g;
  75         }
  76         if ($conn->{state} eq 'WC') {
  77                 if (exists $conn->{cmd}) {
  78                         if (@{$conn->{cmd}}) {
  79                                 dbg("connect $conn->{cnum}: $conn->{msg}") if isdbg('connect');
  80                                 $conn->_docmd($conn->{msg});
  81                         }
  82                 }
  83                 if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
  84                         $conn->to_connected($conn->{call}, 'O', $conn->{csort});
  85                 }
  86         } elsif ($conn->{msg} =~ /\cJ/) {
  87                 my @lines =  $conn->{msg} =~ /([^\cM\cJ]*)\cM?\cJ/g;
  88                 if ($conn->{msg} =~ /\cJ$/) {
  89                         delete $conn->{msg};
  90                 } else {
  91                         $conn->{msg} =~ s/([^\cM\cJ]*)\cM?\cJ//g;
  92                 }
  93                 while (defined ($msg = shift @lines)) {
  94                         dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
  95
  96                         $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
  97 #                       $msg =~ s/[\x00-\x08\x0a-\x19\x1b-\x1f\x80-\x9f]/./g;         # immutable CSI sequence + control characters
  98
  99                         if ($conn->{state} eq 'C') {
 100                                 &{$conn->{rproc}}($conn, "I$conn->{call}|$msg");
 101                         } elsif ($conn->{state} eq 'WL' ) {
 102                                 $msg = uc $msg;
 103                                 if (is_callsign($msg) && $msg !~ m|/| ) {
 104                                         my $sort = $conn->{csort};
 105                                         $sort = 'local' if $conn->{peerhost} eq "127.0.0.1";
 106                                         my $uref;
 107                                         if ($main::passwdreq || ($uref = DXUser->get_current($msg)) && $uref->passwd ) {
 108                                                 $conn->conns($msg);
 109                                                 $conn->{state} = 'WP';
 110                                                 $conn->{decho} = $conn->{echo};
 111                                                 $conn->{echo} = 0;
 112                                                 $conn->send_raw('password: ');
 113                                         } else {
 114                                                 $conn->to_connected($msg, 'A', $sort);
 115                                         }
 116                                 } else {
 117                                         $conn->send_now("Sorry $msg is an invalid callsign");
 118                                         $conn->disconnect;
 119                                 }
 120                         } elsif ($conn->{state} eq 'WP' ) {
 121                                 my $uref = DXUser->get_current($conn->{call});
 122                                 $msg =~ s/[\r\n]+$//;
 123                                 if ($uref && $msg eq $uref->passwd) {
 124                                         my $sort = $conn->{csort};
 125                                         $conn->{echo} = $conn->{decho};
 126                                         delete $conn->{decho};
 127                                         $sort = 'local' if $conn->{peerhost} eq "127.0.0.1";
 128                                         $conn->{usedpasswd} = 1;
 129                                         $conn->to_connected($conn->{call}, 'A', $sort);
 130                                 } else {
 131                                         $conn->send_now("Sorry");
 132                                         $conn->disconnect;
 133                                 }
 134                         } elsif ($conn->{state} eq 'WC') {
 135                                 if (exists $conn->{cmd} && @{$conn->{cmd}}) {
 136                                         $conn->_docmd($msg);
 137                                         if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
 138                                                 $conn->to_connected($conn->{call}, 'O', $conn->{csort});
 139                                         }
 140                                 }
 141                         }
 142                 }
 143         }
 144 }
 145
 146 sub to_connected
 147 {
 148         my ($conn, $call, $dir, $sort) = @_;
 149         $conn->{state} = 'C';
 150         $conn->conns($call);
 151         delete $conn->{cmd};
 152         $conn->{timeout}->del if $conn->{timeout};
 153         delete $conn->{timeout};
 154         $conn->nolinger;
 155         &{$conn->{rproc}}($conn, "$dir$call|$sort");
 156         $conn->_send_file("$main::data/connected") unless $conn->{outgoing};
 157 }
 158
 159 sub new_client {
 160         my $server_conn = shift;
 161     my $sock = $server_conn->{sock}->accept();
 162         if ($sock) {
 163                 my $conn = $server_conn->new($server_conn->{rproc});
 164                 $conn->{sock} = $sock;
 165                 $conn->nolinger;
 166                 Msg::blocking($sock, 0);
 167                 $conn->{blocking} = 0;
 168                 eval {$conn->{peerhost} = $sock->peerhost};
 169                 if ($@) {
 170                         dbg($@) if isdbg('connll');
 171                         $conn->disconnect;
 172                 } else {
 173                         eval {$conn->{peerport} = $sock->peerport};
 174                         $conn->{peerport} = 0 if $@;
 175                         my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost}, $conn->{peerport});
 176                         dbg("accept $conn->{cnum} from $conn->{peerhost} $conn->{peerport}") if isdbg('connll');
 177                         if ($eproc) {
 178                                 $conn->{eproc} = $eproc;
 179                                 Msg::set_event_handler ($sock, "error" => $eproc);
 180                         }
 181                         if ($rproc) {
 182                                 $conn->{rproc} = $rproc;
 183                                 my $callback = sub {$conn->_rcv};
 184                                 Msg::set_event_handler ($sock, "read" => $callback);
 185                                 # send login prompt
 186                                 $conn->{state} = 'WL';
 187                                 #               $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
 188                                 #               $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
 189                                 #               $conn->send_raw("\xFF\xFC\x01");
 190                                 $conn->_send_file("$main::data/issue");
 191                                 $conn->send_raw("login: ");
 192                                 $conn->_dotimeout(60);
 193                                 $conn->{echo} = 1;
 194                         } else {
 195                                 &{$conn->{eproc}}() if $conn->{eproc};
 196                                 $conn->disconnect();
 197                         }
 198                 }
 199         } else {
 200                 dbg("ExtMsg: error on accept ($!)") if isdbg('err');
 201         }
 202 }
 203
 204 sub start_connect
 205 {
 206         my $call = shift;
 207         my $fn = shift;
 208         my $conn = ExtMsg->new(\&main::new_channel);
 209         $conn->{outgoing} = 1;
 210         $conn->conns($call);
 211
 212         my $f = new IO::File $fn;
 213         push @{$conn->{cmd}}, <$f>;
 214         $f->close;
 215         $conn->{state} = 'WC';
 216         $conn->_dotimeout($deftimeout);
 217         $conn->_docmd;
 218 }
 219
 220 sub _docmd
 221 {
 222         my $conn = shift;
 223         my $msg = shift;
 224         my $cmd;
 225
 226         while ($cmd = shift @{$conn->{cmd}}) {
 227                 chomp $cmd;
 228                 next if $cmd =~ /^\s*\#/o;
 229                 next if $cmd =~ /^\s*$/o;
 230                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
 231                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
 232                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
 233                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
 234                         unless ($conn->_doconnect($1, $2)) {
 235                                 $conn->disconnect;
 236                                 @{$conn->{cmd}} = [];    # empty any further commands
 237                                 last;
 238                         }
 239                 }
 240                 if ($cmd =~ /^\s*\'([^\']*)\'\s+\'([^\']*)\'/) {
 241                         $conn->_dochat($cmd, $msg, $1, $2);
 242                         last;
 243                 }
 244                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
 245                         $conn->_doclient($1);
 246                         last;
 247                 }
 248                 last if $conn->{state} eq 'E';
 249         }
 250 }
 251
 252 sub _doconnect
 253 {
 254         my ($conn, $sort, $line) = @_;
 255         my $r;
 256
 257         $sort = lc $sort;
 258         dbg("CONNECT $conn->{cnum} sort: $sort command: $line") if isdbg('connect');
 259         if ($sort eq 'telnet') {
 260                 # this is a straight network connect
 261                 my ($host, $port) = split /\s+/, $line;
 262                 $port = 23 if !$port;
 263                 $r = $conn->connect($host, $port);
 264                 if ($r) {
 265                         dbg("Connected $conn->{cnum} to $host $port") if isdbg('connect');
 266                 } else {
 267                         dbg("***Connect $conn->{cnum} Failed to $host $port $!") if isdbg('connect');
 268                 }
 269         } elsif ($sort eq 'agw') {
 270                 # turn it into an AGW object
 271                 bless $conn, 'AGWMsg';
 272                 $r = $conn->connect($line);
 273         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
 274                 $r = $conn->start_program($line, $sort);
 275         } else {
 276                 dbg("invalid type of connection ($sort)");
 277         }
 278         $conn->disconnect unless $r;
 279         return $r;
 280 }
 281
 282 sub _doabort
 283 {
 284         my $conn = shift;
 285         my $string = shift;
 286         dbg("connect $conn->{cnum}: abort $string") if isdbg('connect');
 287         $conn->{abort} = $string;
 288 }
 289
 290 sub _dotimeout
 291 {
 292         my $conn = shift;
 293         my $val = shift;
 294         dbg("connect $conn->{cnum}: timeout set to $val") if isdbg('connect');
 295         $conn->{timeout}->del if $conn->{timeout};
 296         $conn->{timeval} = $val;
 297         $conn->{timeout} = Timer->new($val, sub{ &_timedout($conn) });
 298 }
 299
 300 sub _dolineend
 301 {
 302         my $conn = shift;
 303         my $val = shift;
 304         dbg("connect $conn->{cnum}: lineend set to $val ") if isdbg('connect');
 305         $val =~ s/\\r/\r/g;
 306         $val =~ s/\\n/\n/g;
 307         $conn->{lineend} = $val;
 308 }
 309
 310 sub _dochat
 311 {
 312         my $conn = shift;
 313         my $cmd = shift;
 314         my $line = shift;
 315         my $expect = shift;
 316         my $send = shift;
 317
 318         if ($line) {
 319                 if ($expect) {
 320                         dbg("connect $conn->{cnum}: expecting: \"$expect\" received: \"$line\"") if isdbg('connect');
 321                         if ($conn->{abort} && $line =~ /\Q$conn->{abort}/i) {
 322                                 dbg("connect $conn->{cnum}: aborted on /$conn->{abort}/") if isdbg('connect');
 323                                 $conn->disconnect;
 324                                 delete $conn->{cmd};
 325                                 return;
 326                         }
 327                         if ($line =~ /\Q$expect/i) {
 328                                 if (length $send) {
 329                                         dbg("connect $conn->{cnum}: got: \"$expect\" sending: \"$send\"") if isdbg('connect');
 330                                         $conn->send_later("D$conn->{call}|$send");
 331                                 }
 332                                 delete $conn->{msg}; # get rid any input if a match
 333                                 return;
 334                         }
 335                 }
 336         }
 337         $conn->{state} = 'WC';
 338         unshift @{$conn->{cmd}}, $cmd;
 339 }
 340
 341 sub _timedout
 342 {
 343         my $conn = shift;
 344         dbg("connect $conn->{cnum}: timed out after $conn->{timeval} seconds") if isdbg('connect');
 345         $conn->disconnect;
 346 }
 347
 348 # handle callsign and connection type firtling
 349 sub _doclient
 350 {
 351         my $conn = shift;
 352         my $line = shift;
 353         my @f = split /\s+/, $line;
 354         my $call = uc $f[0] if $f[0];
 355         $conn->conns($call);
 356         $conn->{csort} = $f[1] if $f[1];
 357         $conn->{state} = 'C';
 358         &{$conn->{rproc}}($conn, "O$call|$conn->{csort}");
 359         delete $conn->{cmd};
 360         $conn->{timeout}->del if $conn->{timeout};
 361 }
 362
 363 sub _send_file
 364 {
 365         my $conn = shift;
 366         my $fn = shift;
 367
 368         if (-e $fn) {
 369                 my $f = new IO::File $fn;
 370                 if ($f) {
 371                         while (<$f>) {
 372                                 chomp;
 373                                 my $l = $_;
 374                                 dbg("connect $conn->{cnum}: $l") if isdbg('connll');
 375                                 $conn->send_raw($l . $conn->{lineend});
 376                         }
 377                         $f->close;
 378                 }
 379         }
 380 }