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($VERSION $BRANCH);
  25 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  26 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
  27 $main::build += $VERSION;
  28 $main::branch += $BRANCH;
  29
  30 use vars qw(@ISA $deftimeout);
  31
  32 @ISA = qw(Msg);
  33 $deftimeout = 60;
  34
  35 sub login
  36 {
  37         goto &main::login;        # save some writing, this was the default
  38 }
  39
  40 sub enqueue
  41 {
  42         my ($conn, $msg) = @_;
  43         unless ($msg =~ /^[ABZ]/) {
  44                 if ($msg =~ /^E[-\w]+\|([01])/ && $conn->{csort} eq 'telnet') {
  45                         $conn->{echo} = $1;
  46                         if ($1) {
  47 #                               $conn->send_raw("\xFF\xFC\x01");
  48                         } else {
  49 #                               $conn->send_raw("\xFF\xFB\x01");
  50                         }
  51                 } else {
  52                         $msg =~ s/^[-\w]+\|//;
  53                         push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
  54                 }
  55         }
  56 }
  57
  58 sub send_raw
  59 {
  60         my ($conn, $msg) = @_;
  61     my $sock = $conn->{sock};
  62     return unless defined($sock);
  63         push (@{$conn->{outqueue}}, $msg);
  64         dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
  65     Msg::set_event_handler ($sock, "write" => sub {$conn->_send(0)});
  66 }
  67
  68 sub echo
  69 {
  70         my $conn = shift;
  71         $conn->{echo} = shift;
  72 }
  73
  74 sub dequeue
  75 {
  76         my $conn = shift;
  77         my $msg;
  78
  79         if ($conn->{csort} eq 'ax25' && exists $conn->{msg}) {
  80                 $conn->{msg} =~ s/\cM/\cJ/g;
  81         }
  82         if ($conn->{state} eq 'WC') {
  83                 if (exists $conn->{cmd}) {
  84                         if (@{$conn->{cmd}}) {
  85                                 dbg("connect $conn->{cnum}: $conn->{msg}") if isdbg('connect');
  86                                 $conn->_docmd($conn->{msg});
  87                         }
  88                 }
  89                 if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
  90                         $conn->to_connected($conn->{call}, 'O', $conn->{csort});
  91                 }
  92         } elsif ($conn->{msg} =~ /\cJ/) {
  93                 my @lines =  $conn->{msg} =~ /([^\cM\cJ]*)\cM?\cJ/g;
  94                 if ($conn->{msg} =~ /\cJ$/) {
  95                         delete $conn->{msg};
  96                 } else {
  97                         $conn->{msg} =~ s/([^\cM\cJ]*)\cM?\cJ//g;
  98                 }
  99                 while (defined ($msg = shift @lines)) {
 100                         dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
 101
 102                         $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
 103 #                       $msg =~ s/[\x00-\x08\x0a-\x19\x1b-\x1f\x80-\x9f]/./g;         # immutable CSI sequence + control characters
 104
 105                         if ($conn->{state} eq 'C') {
 106                                 &{$conn->{rproc}}($conn, "I$conn->{call}|$msg");
 107                         } elsif ($conn->{state} eq 'WL' ) {
 108                                 $msg = uc $msg;
 109                                 if (is_callsign($msg) && $msg !~ m|/| ) {
 110                                         my $sort = $conn->{csort};
 111                                         $sort = 'local' if $conn->{peerhost} eq "127.0.0.1";
 112                                         my $uref;
 113                                         if ($main::passwdreq || ($uref = DXUser->get_current($msg)) && $uref->passwd ) {
 114                                                 $conn->conns($msg);
 115                                                 $conn->{state} = 'WP';
 116                                                 $conn->{decho} = $conn->{echo};
 117                                                 $conn->{echo} = 0;
 118                                                 $conn->send_raw('password: ');
 119                                         } else {
 120                                                 $conn->to_connected($msg, 'A', $sort);
 121                                         }
 122                                 } else {
 123                                         $conn->send_now("Sorry $msg is an invalid callsign");
 124                                         $conn->disconnect;
 125                                 }
 126                         } elsif ($conn->{state} eq 'WP' ) {
 127                                 my $uref = DXUser->get_current($conn->{call});
 128                                 $msg =~ s/[\r\n]+$//;
 129                                 if ($uref && $msg eq $uref->passwd) {
 130                                         my $sort = $conn->{csort};
 131                                         $conn->{echo} = $conn->{decho};
 132                                         delete $conn->{decho};
 133                                         $sort = 'local' if $conn->{peerhost} eq "127.0.0.1";
 134                                         $conn->{usedpasswd} = 1;
 135                                         $conn->to_connected($conn->{call}, 'A', $sort);
 136                                 } else {
 137                                         $conn->send_now("Sorry");
 138                                         $conn->disconnect;
 139                                 }
 140                         } elsif ($conn->{state} eq 'WC') {
 141                                 if (exists $conn->{cmd} && @{$conn->{cmd}}) {
 142                                         $conn->_docmd($msg);
 143                                         if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
 144                                                 $conn->to_connected($conn->{call}, 'O', $conn->{csort});
 145                                         }
 146                                 }
 147                         }
 148                 }
 149         }
 150 }
 151
 152 sub to_connected
 153 {
 154         my ($conn, $call, $dir, $sort) = @_;
 155         $conn->{state} = 'C';
 156         $conn->conns($call);
 157         delete $conn->{cmd};
 158         $conn->{timeout}->del if $conn->{timeout};
 159         delete $conn->{timeout};
 160         $conn->nolinger;
 161         &{$conn->{rproc}}($conn, "$dir$call|$sort");
 162         $conn->_send_file("$main::data/connected") unless $conn->{outgoing};
 163 }
 164
 165 sub new_client {
 166         my $server_conn = shift;
 167     my $sock = $server_conn->{sock}->accept();
 168         if ($sock) {
 169                 my $conn = $server_conn->new($server_conn->{rproc});
 170                 $conn->{sock} = $sock;
 171                 $conn->nolinger;
 172                 Msg::blocking($sock, 0);
 173                 $conn->{blocking} = 0;
 174                 eval {$conn->{peerhost} = $sock->peerhost};
 175                 if ($@) {
 176                         dbg($@) if isdbg('connll');
 177                         $conn->disconnect;
 178                 } else {
 179                         eval {$conn->{peerport} = $sock->peerport};
 180                         $conn->{peerport} = 0 if $@;
 181                         my ($rproc, $eproc) = &{$server_conn->{rproc}} ($conn, $conn->{peerhost}, $conn->{peerport});
 182                         dbg("accept $conn->{cnum} from $conn->{peerhost} $conn->{peerport}") if isdbg('connll');
 183                         if ($eproc) {
 184                                 $conn->{eproc} = $eproc;
 185                                 Msg::set_event_handler ($sock, "error" => $eproc);
 186                         }
 187                         if ($rproc) {
 188                                 $conn->{rproc} = $rproc;
 189                                 my $callback = sub {$conn->_rcv};
 190                                 Msg::set_event_handler ($sock, "read" => $callback);
 191                                 # send login prompt
 192                                 $conn->{state} = 'WL';
 193                                 #               $conn->send_raw("\xff\xfe\x01\xff\xfc\x01\ff\fd\x22");
 194                                 #               $conn->send_raw("\xff\xfa\x22\x01\x01\xff\xf0");
 195                                 #               $conn->send_raw("\xFF\xFC\x01");
 196                                 $conn->_send_file("$main::data/issue");
 197                                 $conn->send_raw("login: ");
 198                                 $conn->_dotimeout(60);
 199                                 $conn->{echo} = 1;
 200                         } else {
 201                                 &{$conn->{eproc}}() if $conn->{eproc};
 202                                 $conn->disconnect();
 203                         }
 204                 }
 205         } else {
 206                 dbg("ExtMsg: error on accept ($!)") if isdbg('err');
 207         }
 208 }
 209
 210 sub start_connect
 211 {
 212         my $call = shift;
 213         my $fn = shift;
 214         my $conn = ExtMsg->new(\&main::new_channel);
 215         $conn->{outgoing} = 1;
 216         $conn->conns($call);
 217
 218         my $f = new IO::File $fn;
 219         push @{$conn->{cmd}}, <$f>;
 220         $f->close;
 221         $conn->{state} = 'WC';
 222         $conn->_dotimeout($deftimeout);
 223         $conn->_docmd;
 224 }
 225
 226 sub _docmd
 227 {
 228         my $conn = shift;
 229         my $msg = shift;
 230         my $cmd;
 231
 232         while ($cmd = shift @{$conn->{cmd}}) {
 233                 chomp $cmd;
 234                 next if $cmd =~ /^\s*\#/o;
 235                 next if $cmd =~ /^\s*$/o;
 236                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
 237                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
 238                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
 239                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
 240                         unless ($conn->_doconnect($1, $2)) {
 241                                 $conn->disconnect;
 242                                 @{$conn->{cmd}} = [];    # empty any further commands
 243                                 last;
 244                         }
 245                 }
 246                 if ($cmd =~ /^\s*\'([^\']*)\'\s+\'([^\']*)\'/) {
 247                         $conn->_dochat($cmd, $msg, $1, $2);
 248                         last;
 249                 }
 250                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
 251                         $conn->_doclient($1);
 252                         last;
 253                 }
 254                 last if $conn->{state} eq 'E';
 255         }
 256 }
 257
 258 sub _doconnect
 259 {
 260         my ($conn, $sort, $line) = @_;
 261         my $r;
 262
 263         $sort = lc $sort;
 264         dbg("CONNECT $conn->{cnum} sort: $sort command: $line") if isdbg('connect');
 265         if ($sort eq 'telnet') {
 266                 # this is a straight network connect
 267                 my ($host, $port) = split /\s+/, $line;
 268                 $port = 23 if !$port;
 269                 $r = $conn->connect($host, $port);
 270                 if ($r) {
 271                         dbg("Connected $conn->{cnum} to $host $port") if isdbg('connect');
 272                 } else {
 273                         dbg("***Connect $conn->{cnum} Failed to $host $port $!") if isdbg('connect');
 274                 }
 275         } elsif ($sort eq 'agw') {
 276                 # turn it into an AGW object
 277                 bless $conn, 'AGWMsg';
 278                 $r = $conn->connect($line);
 279         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
 280                 $r = $conn->start_program($line, $sort);
 281         } else {
 282                 dbg("invalid type of connection ($sort)");
 283         }
 284         $conn->disconnect unless $r;
 285         return $r;
 286 }
 287
 288 sub _doabort
 289 {
 290         my $conn = shift;
 291         my $string = shift;
 292         dbg("connect $conn->{cnum}: abort $string") if isdbg('connect');
 293         $conn->{abort} = $string;
 294 }
 295
 296 sub _dotimeout
 297 {
 298         my $conn = shift;
 299         my $val = shift;
 300         dbg("connect $conn->{cnum}: timeout set to $val") if isdbg('connect');
 301         $conn->{timeout}->del if $conn->{timeout};
 302         $conn->{timeval} = $val;
 303         $conn->{timeout} = Timer->new($val, sub{ &_timedout($conn) });
 304 }
 305
 306 sub _dolineend
 307 {
 308         my $conn = shift;
 309         my $val = shift;
 310         dbg("connect $conn->{cnum}: lineend set to $val ") if isdbg('connect');
 311         $val =~ s/\\r/\r/g;
 312         $val =~ s/\\n/\n/g;
 313         $conn->{lineend} = $val;
 314 }
 315
 316 sub _dochat
 317 {
 318         my $conn = shift;
 319         my $cmd = shift;
 320         my $line = shift;
 321         my $expect = shift;
 322         my $send = shift;
 323
 324         if ($line) {
 325                 if ($expect) {
 326                         dbg("connect $conn->{cnum}: expecting: \"$expect\" received: \"$line\"") if isdbg('connect');
 327                         if ($conn->{abort} && $line =~ /\Q$conn->{abort}/i) {
 328                                 dbg("connect $conn->{cnum}: aborted on /$conn->{abort}/") if isdbg('connect');
 329                                 $conn->disconnect;
 330                                 delete $conn->{cmd};
 331                                 return;
 332                         }
 333                         if ($line =~ /\Q$expect/i) {
 334                                 if (length $send) {
 335                                         dbg("connect $conn->{cnum}: got: \"$expect\" sending: \"$send\"") if isdbg('connect');
 336                                         $conn->send_later("D$conn->{call}|$send");
 337                                 }
 338                                 delete $conn->{msg}; # get rid any input if a match
 339                                 return;
 340                         }
 341                 }
 342         }
 343         $conn->{state} = 'WC';
 344         unshift @{$conn->{cmd}}, $cmd;
 345 }
 346
 347 sub _timedout
 348 {
 349         my $conn = shift;
 350         dbg("connect $conn->{cnum}: timed out after $conn->{timeval} seconds") if isdbg('connect');
 351         $conn->disconnect;
 352 }
 353
 354 # handle callsign and connection type firtling
 355 sub _doclient
 356 {
 357         my $conn = shift;
 358         my $line = shift;
 359         my @f = split /\s+/, $line;
 360         my $call = uc $f[0] if $f[0];
 361         $conn->conns($call);
 362         $conn->{csort} = $f[1] if $f[1];
 363         $conn->{state} = 'C';
 364         &{$conn->{rproc}}($conn, "O$call|$conn->{csort}");
 365         delete $conn->{cmd};
 366         $conn->{timeout}->del if $conn->{timeout};
 367 }
 368
 369 sub _send_file
 370 {
 371         my $conn = shift;
 372         my $fn = shift;
 373
 374         if (-e $fn) {
 375                 my $f = new IO::File $fn;
 376                 if ($f) {
 377                         while (<$f>) {
 378                                 chomp;
 379                                 my $l = $_;
 380                                 dbg("connect $conn->{cnum}: $l") if isdbg('connll');
 381                                 $conn->send_raw($l . $conn->{lineend});
 382                         }
 383                         $f->close;
 384                 }
 385         }
 386 }