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 =~ /^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) && $msg !~ m|/| ) {
 103                                         my $sort = $conn->{csort};
 104                                         $sort = 'local' if $conn->{peerhost} =~ /127\.\d+\.\d+\.\d+$/ || $conn->{peerhost} eq '::1';
 105                                         my $uref;
 106                                         if ($main::passwdreq || ($uref = DXUser::get_current($msg)) && $uref->passwd ) {
 107                                                 $conn->conns($msg);
 108                                                 $conn->{state} = 'WP';
 109                                                 $conn->{decho} = $conn->{echo};
 110                                                 $conn->{echo} = 0;
 111                                                 $conn->send_raw('password: ');
 112                                         } else {
 113                                                 $conn->to_connected($msg, 'A', $sort);
 114                                         }
 115                                 } else {
 116                                         $conn->send_now("Sorry $msg is an invalid callsign");
 117                                         $conn->disconnect;
 118                                 }
 119                         } elsif ($conn->{state} eq 'WP' ) {
 120                                 my $uref = DXUser::get_current($conn->{call});
 121                                 $msg =~ s/[\r\n]+$//;
 122                                 if ($uref && $msg eq $uref->passwd) {
 123                                         my $sort = $conn->{csort};
 124                                         $conn->{echo} = $conn->{decho};
 125                                         delete $conn->{decho};
 126                                         $sort = 'local' if $conn->{peerhost} =~ /127\.\d+\.\d+\.\d+$/ || $conn->{peerhost} eq '::1';
 127                                         $conn->{usedpasswd} = 1;
 128                                         $conn->to_connected($conn->{call}, 'A', $sort);
 129                                 } else {
 130                                         $conn->send_now("Sorry");
 131                                         $conn->disconnect;
 132                                 }
 133                         } elsif ($conn->{state} eq 'WC') {
 134                                 if (exists $conn->{cmd} && @{$conn->{cmd}}) {
 135                                         $conn->_docmd($msg);
 136                                         if ($conn->{state} eq 'WC' && exists $conn->{cmd} &&  @{$conn->{cmd}} == 0) {
 137                                                 $conn->to_connected($conn->{call}, 'O', $conn->{csort});
 138                                         }
 139                                 }
 140                         }
 141                 }
 142         }
 143 }
 144
 145 sub to_connected
 146 {
 147         my ($conn, $call, $dir, $sort) = @_;
 148         $conn->{state} = 'C';
 149         $conn->conns($call);
 150         delete $conn->{cmd};
 151         $conn->{timeout}->del if $conn->{timeout};
 152         delete $conn->{timeout};
 153         $conn->{csort} = $sort;
 154         &{$conn->{rproc}}($conn, "$dir$call|$sort");
 155         $conn->_send_file("$main::data/connected") unless $conn->{outgoing};
 156 }
 157
 158 sub new_client {
 159
 160         my $server_conn = shift;
 161         my $client = shift;
 162         my $conn = $server_conn->SUPER::new_client($client);
 163         # send login prompt
 164         $conn->{state} = 'WL';
 165         $conn->_send_file("$main::data/issue");
 166         $conn->send_raw("login: ");
 167         $conn->_dotimeout(60);
 168         $conn->{echo} = 1;
 169 }
 170
 171 sub start_connect
 172 {
 173         my $call = shift;
 174         my $fn = shift;
 175         my $conn = ExtMsg->new(\&main::new_channel);
 176         $conn->{outgoing} = 1;
 177         $conn->conns($call);
 178
 179         my $f = new IO::File $fn;
 180         push @{$conn->{cmd}}, <$f>;
 181         $f->close;
 182         $conn->{state} = 'WC';
 183         $conn->_dotimeout($deftimeout);
 184         $conn->_docmd;
 185 }
 186
 187 sub _docmd
 188 {
 189         my $conn = shift;
 190         my $msg = shift;
 191         my $cmd;
 192
 193         while ($cmd = shift @{$conn->{cmd}}) {
 194                 chomp $cmd;
 195                 next if $cmd =~ /^\s*\#/o;
 196                 next if $cmd =~ /^\s*$/o;
 197                 $conn->_doabort($1) if $cmd =~ /^\s*a\w*\s+(.*)/i;
 198                 $conn->_dotimeout($1) if $cmd =~ /^\s*t\w*\s+(\d+)/i;
 199                 $conn->_dolineend($1) if $cmd =~ /^\s*[Ll]\w*\s+\'((?:\\[rn])+)\'/i;
 200                 if ($cmd =~ /^\s*co\w*\s+(\w+)\s+(.*)$/i) {
 201                         unless ($conn->_doconnect($1, $2)) {
 202                                 $conn->disconnect;
 203                                 @{$conn->{cmd}} = [];    # empty any further commands
 204                                 last;
 205                         }
 206                 }
 207                 if ($cmd =~ /^\s*\'([^\']*)\'\s+\'([^\']*)\'/) {
 208                         $conn->_dochat($cmd, $msg, $1, $2);
 209                         last;
 210                 }
 211                 if ($cmd =~ /^\s*cl\w+\s+(.*)/i) {
 212                         $conn->_doclient($1);
 213                         last;
 214                 }
 215                 last if $conn->{state} eq 'E';
 216         }
 217 }
 218
 219 sub _doconnect
 220 {
 221         my ($conn, $sort, $line) = @_;
 222         my $r;
 223
 224         $sort = lc $sort;
 225         dbg("CONNECT $conn->{cnum} sort: $sort command: $line") if isdbg('connect');
 226         if ($sort eq 'telnet') {
 227                 # this is a straight network connect
 228                 my ($host, $port) = split /\s+/, $line;
 229                 $port = 23 if !$port;
 230                 $r = $conn->connect($host, $port);
 231                 if ($r) {
 232                         dbg("Connected $conn->{cnum} to $host $port") if isdbg('connect');
 233                 } else {
 234                         dbg("***Connect $conn->{cnum} Failed to $host $port $!") if isdbg('connect');
 235                 }
 236         } elsif ($sort eq 'agw') {
 237                 # turn it into an AGW object
 238                 bless $conn, 'AGWMsg';
 239                 $r = $conn->connect($line);
 240         } elsif ($sort eq 'bpq') {
 241                 # turn it into an BPQ object
 242                 bless $conn, 'BPQMsg';
 243                 $r = $conn->connect($line);
 244         } elsif ($sort eq 'ax25' || $sort eq 'prog') {
 245                 $r = $conn->start_program($line, $sort);
 246         } else {
 247                 dbg("invalid type of connection ($sort)");
 248         }
 249         $conn->disconnect unless $r;
 250         return $r;
 251 }
 252
 253 sub _doabort
 254 {
 255         my $conn = shift;
 256         my $string = shift;
 257         dbg("connect $conn->{cnum}: abort $string") if isdbg('connect');
 258         $conn->{abort} = $string;
 259 }
 260
 261 sub _dotimeout
 262 {
 263         my $conn = shift;
 264         my $val = shift;
 265         dbg("connect $conn->{cnum}: timeout set to $val") if isdbg('connect');
 266         $conn->{timeout}->del if $conn->{timeout};
 267         $conn->{timeval} = $val;
 268         $conn->{timeout} = Timer->new($val, sub{ &_timedout($conn) });
 269 }
 270
 271 sub _dolineend
 272 {
 273         my $conn = shift;
 274         my $val = shift;
 275         dbg("connect $conn->{cnum}: lineend set to $val ") if isdbg('connect');
 276         $val =~ s/\\r/\r/g;
 277         $val =~ s/\\n/\n/g;
 278         $conn->{lineend} = $val;
 279 }
 280
 281 sub _dochat
 282 {
 283         my $conn = shift;
 284         my $cmd = shift;
 285         my $line = shift;
 286         my $expect = shift;
 287         my $send = shift;
 288
 289         if ($line) {
 290                 if ($expect) {
 291                         dbg("connect $conn->{cnum}: expecting: \"$expect\" received: \"$line\"") if isdbg('connect');
 292                         if ($conn->{abort} && $line =~ /$conn->{abort}/i) {
 293                                 dbg("connect $conn->{cnum}: aborted on /$conn->{abort}/") if isdbg('connect');
 294                                 $conn->disconnect;
 295                                 delete $conn->{cmd};
 296                                 return;
 297                         }
 298                         if ($line =~ /\Q$expect/i) {
 299                                 if (length $send) {
 300                                         dbg("connect $conn->{cnum}: got: \"$expect\" sending: \"$send\"") if isdbg('connect');
 301                                         $conn->send_later("D$conn->{call}|$send");
 302                                 }
 303                                 delete $conn->{msg}; # get rid any input if a match
 304                                 return;
 305                         }
 306                 }
 307         }
 308         $conn->{state} = 'WC';
 309         unshift @{$conn->{cmd}}, $cmd;
 310 }
 311
 312 sub _timedout
 313 {
 314         my $conn = shift;
 315         dbg("connect $conn->{cnum}: timed out after $conn->{timeval} seconds") if isdbg('connect');
 316         $conn->disconnect;
 317 }
 318
 319 # handle callsign and connection type firtling
 320 sub _doclient
 321 {
 322         my $conn = shift;
 323         my $line = shift;
 324         my @f = split /\s+/, $line;
 325         my $call = uc $f[0] if $f[0];
 326         $conn->conns($call);
 327         $conn->{csort} = $f[1] if $f[1];
 328         $conn->{state} = 'C';
 329         eval {$conn->{peerhost} = $conn->{sock}->handle->peerhost} unless $conn->ax25;
 330         &{$conn->{rproc}}($conn, "O$call|$conn->{csort}");
 331         delete $conn->{cmd};
 332         $conn->{timeout}->del if $conn->{timeout};
 333 }
 334
 335 sub _send_file
 336 {
 337         my $conn = shift;
 338         my $fn = shift;
 339
 340         if (-e $fn) {
 341                 my $f = new IO::File $fn;
 342                 if ($f) {
 343                         while (<$f>) {
 344                                 chomp;
 345                                 my $l = $_;
 346                                 dbg("connect $conn->{cnum}: $l") if isdbg('connll');
 347                                 $conn->send_raw($l . $conn->{lineend});
 348                         }
 349                         $f->close;
 350                 }
 351         }
 352 }