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 # Copyright (c) 2001 - Dirk Koopman G1TLH
  10 #
  11 #       Modified Jan 2006 by John Wiseman G8BPQ to support connections to BPQ32 node,
  12 #               and fix pattern matching on 'chat' abort handling
  13 #
  14
  15 package ExtMsg;
  16
  17 use strict;
  18 use Msg;
  19 use DXVars;
  20 use DXUtil;
  21 use DXDebug;
  22 use IO::File;
  23 use IO::Socket;
  24 use IPC::Open3;
  25
  26 use vars qw(@ISA $deftimeout);
  27
  28 @ISA = qw(Msg);
  29 $deftimeout = 60;
  30
  31 sub login
  32 {
  33         goto &main::login;        # save some writing, this was the default
  34 }
  35
  36 sub enqueue
  37 {
  38         my ($conn, $msg) = @_;
  39         unless ($msg =~ /^[ABZ]/) {
  40                 if ($msg =~ m{^E[-\w\/]+\|([01])} && $conn->{csort} eq 'telnet') {
  41                         $conn->{echo} = $1;
  42                         if ($1) {
  43 #                               $conn->send_raw("\xFF\xFC\x01");
  44                         } else {
  45 #                               $conn->send_raw("\xFF\xFB\x01");
  46                         }
  47                 } else {
  48                         $msg =~ s{^[-\w\/]+\|}{};
  49                         push (@{$conn->{outqueue}}, $msg . $conn->{lineend});
  50                 }
  51         }
  52 }
  53
  54 sub send_raw
  55 {
  56         my ($conn, $msg) = @_;
  57         dbg((ref $conn) . " connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
  58         $conn->SUPER::send_raw($msg);
  59 }
  60
  61 sub echo
  62 {
  63         my $conn = shift;
  64         $conn->{echo} = shift;
  65 }
  66
  67 sub dequeue
  68 {
  69         my $conn = shift;
  70         my $msg;
  71
  72         if ($conn->ax25 && exists $conn->{msg}) {
  73                 $conn->{msg} =~ s/\cM/\cJ/g;
  74         }
  75         if ($conn->{state} eq 'WC') {
  76                 if (exists $conn->{cmd}) {
  77                         if (@{$conn->{cmd}}) {
  78                                 dbg("connect $conn->{cnum}: $conn->{msg}") if isdbg('connect');
  79                                 $conn->_docmd($conn->{msg});
  80                         }
  81                 }
  82                 if ($conn->{state} eq 'WC' && exists $conn->{cmd} && @{$conn->{cmd}} == 0) {
  83                         $conn->to_connected($conn->{call}, 'O', $conn->{csort});
  84                 }
  85         } elsif ($conn->{msg} =~ /\cJ/) {
  86                 my @lines =  $conn->{msg} =~ /([^\cM\cJ]*)\cM?\cJ/g;
  87                 if ($conn->{msg} =~ /\cJ$/) {
  88                         delete $conn->{msg};
  89                 } else {
  90                         $conn->{msg} =~ s/([^\cM\cJ]*)\cM?\cJ//g;
  91                 }
  92                 while (defined ($msg = shift @lines)) {
  93                         dbg("connect $conn->{cnum}: $msg") if $conn->{state} ne 'C' && isdbg('connect');
  94
  95                         $msg =~ s/\xff\xfa.*\xff\xf0|\xff[\xf0-\xfe].//g; # remove telnet options
  96 #                       $msg =~ s/[\x00-\x08\x0a-\x19\x1b-\x1f\x80-\x9f]/./g;         # immutable CSI sequence + control characters
  97
  98                         if ($conn->{state} eq 'C') {
  99                                 &{$conn->{rproc}}($conn, "I$conn->{call}|$msg");
 100                         } elsif ($conn->{state} eq 'WL' ) {
 101                                 $msg = uc $msg;
 102                                 if (is_callsign($msg)) {
 103                                         if ($main::allowslashcall || $msg !~ m|/|) {
 104                                                 my $sort = $conn->{csort};
 105                                                 $sort = 'local' if $conn->{peerhost} =~ /127\.\d+\.\d+\.\d+$/ || $conn->{peerhost} eq '::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                                 } else {
 121                                         $conn->send_now("Sorry $msg is an invalid callsign");
 122                                         $conn->disconnect;
 123                                 }
 124                         } elsif ($conn->{state} eq 'WP' ) {
 125                                 my $uref = DXUser::get_current($conn->{call});
 126                                 $msg =~ s/[\r\n]+$//;
 127                                 if ($uref && $msg eq $uref->passwd) {
 128                                         my $sort = $conn->{csort};
 129                                         $conn->{echo} = $conn->{decho};
 130                                         delete $conn->{decho};
 131                                         $sort = 'local' if $conn->{peerhost} =~ /127\.\d+\.\d+\.\d+$/ || $conn->{peerhost} eq '::1';
 132                                         $conn->{usedpasswd} = 1;
 133                                         $conn->to_connected($conn->{call}, 'A', $sort);
 134                                 } else {
 135                                         $conn->send_now("Sorry");
 136                                         $conn->disconnect;
 137                                 }
 138                         } elsif ($conn->{state} eq 'WC') {
 139                                 if (exists $conn->{cmd} && @{$conn->{cmd}}) {
 140                                         $conn->_docmd($msg);
 141                                         if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
 142                                                 $conn->to_connected($conn->{call}, 'O', $conn->{csort});
 143                                         }
 144                                 }
 145                         }
 146                 }
 147         }
 148 }
 149
 150 sub to_connected
 151 {
 152         my ($conn, $call, $dir, $sort) = @_;
 153         $conn->{state} = 'C';
 154         $conn->conns($call);
 155         delete $conn->{cmd};
 156         $conn->{timeout}->del if $conn->{timeout};
 157         delete $conn->{timeout};
 158         $conn->{csort} = $sort;
 159         &{$conn->{rproc}}($conn, "$dir$call|$sort");
 160         $conn->_send_file(localdata("connected")) unless $conn->{outgoing};
 161 }
 162
 163 sub new_client {
 164
 165         my $server_conn = shift;
 166         my $client = shift;
 167         my $conn = $server_conn->SUPER::new_client($client);
 168         # send login prompt
 169         $conn->{state} = 'WL';
 170         $conn->_send_file(localdata("issue"));
 171         $conn->send_raw("login: ");
 172         $conn->_dotimeout(60);
 173         $conn->{echo} = 1;
 174 }
 175
 176 sub start_connect
 177 {
 178         my $call = shift;
 179         my $fn = shift;
 180         my $conn = ExtMsg->new(\&main::new_channel);
 181         $conn->{outgoing} = 1;
 182         $conn->conns($call);
 183
 184         my $f = new IO::File $fn;
 185         push @{$conn->{cmd}}, <$f>;
 186         $f->close;
 187         $conn->{state} = 'WC';
 188         $conn->_dotimeout($deftimeout);
 189         $conn->_docmd;
 190 }
 191
 192 sub _docmd
 193 {
 194         my $conn = shift;
 195         my $msg = shift;
 196         my $cmd;
 197
 198         while ($cmd = shift @{$conn->{cmd}}) {
 199                 chomp $cmd;
 200                 next if $cmd =~ /^\s*\#/o;
 201                 next if $cmd =~ /^\s*$/o;
 202                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
 203                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
 204                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
 205                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
 206                         unless ($conn->_doconnect($1, $2)) {
 207                                 $conn->disconnect;
 208                                 @{$conn->{cmd}} = [];    # empty any further commands
 209                                 last;
 210                         }
 211                 }
 212                 if ($cmd =~ /^\s*\'([^\']*)\'\s+\'([^\']*)\'/) {
 213                         $conn->_dochat($cmd, $msg, $1, $2);
 214                         last;
 215                 }
 216                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
 217                         $conn->_doclient($1);
 218                         last;
 219                 }
 220                 last if $conn->{state} eq 'E';
 221         }
 222 }
 223
 224 sub _doconnect
 225 {
 226         my ($conn, $sort, $line) = @_;
 227         my $r;
 228
 229         $sort = lc $sort;
 230         dbg("CONNECT $conn->{cnum} sort: $sort command: $line") if isdbg('connect');
 231         if ($sort eq 'telnet') {
 232                 # this is a straight network connect
 233                 my ($host, $port) = split /\s+/, $line;
 234                 $port = 23 if !$port;
 235                 $r = $conn->connect($host, $port);
 236                 if ($r) {
 237                         dbg("Connected $conn->{cnum} to $host $port") if isdbg('connect');
 238                 } else {
 239                         dbg("***Connect $conn->{cnum} Failed to $host $port $!") if isdbg('connect');
 240                 }
 241         } elsif ($sort eq 'agw') {
 242                 # turn it into an AGW object
 243                 bless $conn, 'AGWMsg';
 244                 $r = $conn->connect($line);
 245         } elsif ($sort eq 'bpq') {
 246                 # turn it into an BPQ object
 247                 bless $conn, 'BPQMsg';
 248                 $r = $conn->connect($line);
 249         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
 250                 $r = $conn->start_program($line, $sort);
 251         } else {
 252                 dbg("invalid type of connection ($sort)");
 253         }
 254         $conn->disconnect unless $r;
 255         return $r;
 256 }
 257
 258 sub _doabort
 259 {
 260         my $conn = shift;
 261         my $string = shift;
 262         dbg("connect $conn->{cnum}: abort $string") if isdbg('connect');
 263         $conn->{abort} = $string;
 264 }
 265
 266 sub _dotimeout
 267 {
 268         my $conn = shift;
 269         my $val = shift;
 270         dbg("connect $conn->{cnum}: timeout set to $val") if isdbg('connect');
 271         $conn->{timeout}->del if $conn->{timeout};
 272         $conn->{timeval} = $val;
 273         $conn->{timeout} = Timer->new($val, sub{ &_timedout($conn) });
 274 }
 275
 276 sub _dolineend
 277 {
 278         my $conn = shift;
 279         my $val = shift;
 280         dbg("connect $conn->{cnum}: lineend set to $val ") if isdbg('connect');
 281         $val =~ s/\\r/\r/g;
 282         $val =~ s/\\n/\n/g;
 283         $conn->{lineend} = $val;
 284 }
 285
 286 sub _dochat
 287 {
 288         my $conn = shift;
 289         my $cmd = shift;
 290         my $line = shift;
 291         my $expect = shift;
 292         my $send = shift;
 293
 294         if ($line) {
 295                 if ($expect) {
 296                         dbg("connect $conn->{cnum}: expecting: \"$expect\" received: \"$line\"") if isdbg('connect');
 297                         if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
 298                                 dbg("connect $conn->{cnum}: aborted on /$conn->{abort}/") if isdbg('connect');
 299                                 $conn->disconnect;
 300                                 delete $conn->{cmd};
 301                                 return;
 302                         }
 303                         if ($line =~ /\Q$expect/i) {
 304                                 if (length $send) {
 305                                         dbg("connect $conn->{cnum}: got: \"$expect\" sending: \"$send\"") if isdbg('connect');
 306                                         $conn->send_later("D$conn->{call}|$send");
 307                                 }
 308                                 delete $conn->{msg}; # get rid any input if a match
 309                                 return;
 310                         }
 311                 }
 312         }
 313         $conn->{state} = 'WC';
 314         unshift @{$conn->{cmd}}, $cmd;
 315 }
 316
 317 sub _timedout
 318 {
 319         my $conn = shift;
 320         dbg("connect $conn->{cnum}: timed out after $conn->{timeval} seconds") if isdbg('connect');
 321         $conn->disconnect;
 322 }
 323
 324 # handle callsign and connection type firtling
 325 sub _doclient
 326 {
 327         my $conn = shift;
 328         my $line = shift;
 329         my @f = split /\s+/, $line;
 330         my $call = uc $f[0] if $f[0];
 331         $conn->conns($call);
 332         $conn->{csort} = $f[1] if $f[1];
 333         $conn->{state} = 'C';
 334         eval {$conn->{peerhost} = $conn->{sock}->handle->peerhost} unless $conn->ax25;
 335         &{$conn->{rproc}}($conn, "O$call|$conn->{csort}");
 336         delete $conn->{cmd};
 337         $conn->{timeout}->del if $conn->{timeout};
 338 }
 339
 340 sub _send_file
 341 {
 342         my $conn = shift;
 343         my $fn = shift;
 344
 345         if (-e $fn) {
 346                 my $f = new IO::File $fn;
 347                 if ($f) {
 348                         while (<$f>) {
 349                                 chomp;
 350                                 my $l = $_;
 351                                 dbg("connect $conn->{cnum}: $l") if isdbg('connll');
 352                                 $conn->send_raw($l . $conn->{lineend});
 353                         }
 354                         $f->close;
 355                 }
 356         }
 357 }