-#!/usr/bin/perl
+#!/usr/bin/perl -w
#
# A thing that implements dxcluster 'protocol'
#
# $Id$
#
+require 5.004;
# search local then perl directories
BEGIN {
use Msg;
use DXVars;
use DXDebug;
-use DXUser;
+use DXUtil;
+use Net::Telnet qw(TELOPT_ECHO TELOPT_BINARY);
use IO::File;
use IO::Socket;
use IPC::Open2;
-use Net::Telnet qw(TELOPT_ECHO);
-use Carp;
# cease communications
sub cease
{
my $sendz = shift;
- if ($conn && $sendz) {
- $conn->send_now("Z$call|bye...\n");
- }
+# if ($conn && $sendz) {
+# $conn->send_now("Z$call|bye...");
+# sleep(1);
+# }
$stdout->flush if $stdout;
- kill(15, $pid) if $pid;
+ if ($pid) {
+ dbg('connect', "killing $pid");
+ kill(9, $pid);
+ }
+ dbgclose();
+# $SIG{__WARN__} = sub {my $a = shift; cluck($a); };
sleep(1);
+
+ # do we need this ?
+ $conn->disconnect if $conn;
exit(0);
}
{
$SIG{CHLD} = \&sig_chld;
$waitedpid = wait;
+ dbg('connect', "caught $pid");
}
{
my ($con, $msg, $err) = @_;
if (defined $err && $err) {
- cease(1);
+ cease(0);
}
if (defined $msg) {
- my ($sort, $call, $line) = $msg =~ /^(\w)(\S+)\|(.*)$/;
+ my ($sort, $call, $line) = $msg =~ /^(\w)([^\|]+)\|(.*)$/;
if ($sort eq 'D') {
my $snl = $mynl;
my $newsavenl = "";
$snl = "" if $mode == 0;
+ $snl = "\r\n" if $mode == 3;
+ $snl = "\n" if $mode == 2;
if ($mode == 2 && $line =~ />$/) {
$newsavenl = $snl;
$snl = ' ';
$line =~ s/\n/\r/og if $mode == 1;
#my $p = qq($line$snl);
if ($buffered) {
- if (length $outqueue >= 128) {
+ if (length $outqueue >= $client_buffer_lth) {
print $stdout $outqueue;
+ pop @echo if @echo > $maxecho;
+ push @echo, $outqueue;
$outqueue = "";
}
$outqueue .= "$savenl$line$snl";
$mode = $line; # set echo mode from cluster
my $term = POSIX::Termios->new;
$term->getattr(fileno($sock));
- $term->setflag( &POSIX::ISIG );
+ $term->setiflag( 0 );
+ $term->setoflag( 0 );
$term->setattr(fileno($sock), &POSIX::TCSANOW );
}
} elsif ($sort eq 'I') {
} elsif ($sort eq 'B') {
if ($buffered && $outqueue) {
print $stdout $outqueue;
+ pop @echo if @echo > $maxecho;
+ push @echo, $outqueue;
$outqueue = "";
}
$buffered = $line; # set buffered or unbuffered
} elsif ($sort eq 'Z') { # end, disconnect, go, away .....
cease(0);
- }
+ }
+
+ # ******************************************************
+ # ******************************************************
+ # any other sorts that might happen are silently ignored.
+ # ******************************************************
+ # ******************************************************
+ } else {
+ cease(0);
}
$lasttime = time;
}
# $prbuf =~ s/\r/\\r/;
# $prbuf =~ s/\n/\\n/;
# print "sys: $r ($prbuf)\n";
- if ($r > 0) {
+ if (!defined $r || $r == 0) {
+ cease(1);
+ } elsif ($r > 0) {
if ($mode) {
- $buf =~ s/\r/\n/og if $mode == 1;
- $buf =~ s/\r\n/\n/og if $mode == 2;
+ $buf =~ s/\r/\n/g if $mode == 1;
+ $buf =~ s/[\r\x00]//g if $mode == 2 || $mode == 3;
+
$dangle = !($buf =~ /\n$/);
if ($buf eq "\n") {
@lines = (" ");
unshift @lines, ($lastbit . $first) if ($first);
foreach $first (@lines) {
# print "send_now $call $first\n";
+ next if grep {$_ eq $first } @echo;
$conn->send_later("I$call|$first");
}
$lastbit = $buf;
} else {
$conn->send_later("I$call|$buf");
}
- } elsif ($r == 0) {
- cease(1);
- }
+ }
$lasttime = time;
}
my ($host, $port) = split /\s+/, $line;
$port = 23 if !$port;
- if ($port == 23) {
- $sock = new Net::Telnet (Timeout => $timeout);
- $sock->option_callback(\&optioncb);
- $sock->output_record_separator('');
- $sock->option_log('option_log');
- $sock->dump_log('dump');
- $sock->option_accept(Wont => TELOPT_ECHO);
- $sock->open($host) or die "Can't connect to $host port $port $!";
- } else {
- $sock = IO::Socket::INET->new(PeerAddr => "$host:$port", Proto => 'tcp')
- or die "Can't connect to $host port $port $!";
-
- }
+ $sock = new Net::Telnet (Timeout => $timeout, Port => $port);
+ $sock->option_callback(\&optioncb);
+ $sock->output_record_separator('');
+ $sock->option_accept(Dont => TELOPT_ECHO, Wont => TELOPT_ECHO);
+ $sock->open($host) or die "Can't connect to $host port $port $!";
+ $sock->binmode(1);
+ $mode = 3;
} elsif ($sort eq 'ax25' || $sort eq 'prog') {
my @args = split /\s+/, $line;
$rfh = new IO::File;
$wfh = new IO::File;
$pid = open2($rfh, $wfh, "$line") or die "can't do $line $!";
+ die "no receive channel $!" unless $rfh;
+ die "no transmit channel $!" unless $wfh;
dbg('connect', "got pid $pid");
$wfh->autoflush(1);
+ $mode = 1;
} else {
die "invalid type of connection ($sort)";
}
for (;;) {
if ($csort eq 'telnet') {
$line = $sock->get();
- $line =~ s/\r\n/\n/og;
+ cease(11) unless $line; # the socket has gone away?
+ if (length $line == 0) {
+ dbg('connect', "received 0 length line, aborting...");
+ cease(11);
+ }
+ $line =~ s/\r//g;
chomp;
} elsif ($csort eq 'ax25' || $csort eq 'prog') {
local $/ = "\r";
$line = <$rfh>;
- $line =~ s/\r//og;
+ if (length $line == 0) {
+ dbg('connect', "received 0 length line, aborting...");
+ cease(11);
+ }
+ $line =~ s/\r/\n/g;
+ chomp;
}
- dbg('connect', "received \"$line\"");
+ dbg('connect', map { "received \"$_\"" } split /\n/, $line);
if ($abort && $line =~ /$abort/i) {
dbg('connect', "aborted on /$abort/");
cease(11);
sub timeout
{
dbg('connect', "timed out after $timeout seconds");
- cease(10);
+ cease(0);
}
+# handle callsign and connection type firtling
+sub doclient
+{
+ my $line = shift;
+ my @f = split /\s+/, $line;
+ $call = uc $f[0] if $f[0];
+ $csort = $f[1] if $f[1];
+}
#
# initialisation
$mode = 2; # 1 - \n = \r as EOL, 2 - \n = \n, 0 - transparent
$call = ""; # the callsign being used
-@stdoutq = (); # the queue of stuff to send out to the user
$conn = 0; # the connection object for the cluster
$lastbit = ""; # the last bit of an incomplete input line
$mynl = "\n"; # standard terminator
$lasttime = time; # lasttime something happened on the interface
-$outqueue = ""; # the output queue length
+$outqueue = ""; # the output queue
+$client_buffer_lth = 200; # how many characters are buffered up on outqueue
$buffered = 1; # buffer output
$savenl = ""; # an NL that has been saved from last time
$timeout = 60; # default timeout for connects
$abort = ""; # the current abort string
$cpath = "$root/connect"; # the basic connect directory
+$maxecho = 5; # length of max echo queue
$pid = 0; # the pid of the child program
$csort = ""; # the connection type
$rfh = 0;
$wfh = 0;
+$waitedpid = 0;
#
# deal with args
#
-$call = uc shift @ARGV;
+$call = uc shift @ARGV if @ARGV;
$call = uc $myalias if !$call;
-$connsort = lc shift @ARGV;
+$connsort = lc shift @ARGV if @ARGV;
$connsort = 'local' if !$connsort;
$loginreq = $call eq 'LOGIN';
$SIG{'INT'} = \&sig_term;
$SIG{'TERM'} = \&sig_term;
-$SIG{'HUP'} = 'IGNORE';
+$SIG{'HUP'} = \&sig_term;
$SIG{'CHLD'} = \&sig_chld;
+$SIG{'ALRM'} = \&timeout;
dbgadd('connect');
my $user;
my $s;
- DXUser->init($userfn);
+ $connsort = 'telnet' if $connsort eq 'local';
+ setmode();
+
+ if (-e "$data/issue") {
+ open(I, "$data/issue") or die;
+ local $/ = undef;
+ $issue = <I>;
+ close(I);
+ $issue = s/\n/\r/og if $mode == 1;
+ local $/ = $nl;
+ $stdout->print($issue) if $issue;
+ }
- for ($state = 0; $state < 2; ) {
- alarm($timeout);
+ # allow a login from an existing user. I could create a user but
+ # I want to check for valid callsigns and I don't have the
+ # necessary info / regular expression yet
+ alarm($timeout);
- if ($state == 0) {
- $stdout->print('login: ');
- $stdout->flush();
- local $/ = $mode == 1 ? "\r" : "\n";
- $s = $stdin->getline();
- chomp $s;
- $call = uc $s;
- $user = DXUser->get($call);
- $state = 1;
- } elsif ($state == 1) {
- $stdout->print('password: ');
- $stdout->flush();
- local $/ = $mode == 1 ? "\r" : "\n";
- $s = $stdin->getline();
- chomp $s;
- $state = 2;
- cease(0) if !$user || ($user->passwd && $user->passwd ne $s);
- }
- }
+ $stdout->print('login: ');
+ $stdout->flush();
+ local $\ = $mynl;
+ $s = $stdin->getline();
+ chomp $s;
+ $s =~ s/\s+//og;
+ $s =~ s/-\d+$//o; # no ssids!
+ cease(0) unless $s && $s gt ' ';
+ unless (is_callsign($s)) {
+ $stdout->print("Sorry, $s is an invalid callsign");
+ cease(0);
+ }
+ $call = uc $s;
+ alarm(0);
}
# is this an out going connection?
open(IN, "$cpath/$mcall") or cease(2);
@in = <IN>;
close IN;
-
- # alarm($timeout);
+
+ alarm($timeout);
for (@in) {
chomp;
doconnect($1, $2) if /^\s*co\w*\s+(\w+)\s+(.*)$/io;
doabort($1) if /^\s*a\w*\s+(.*)/io;
dotimeout($1) if /^\s*t\w*\s+(\d+)/io;
- dochat($1, $2) if /\s*\'(.*)\'\s+\'(.*)\'/io;
+ dochat($1, $2) if /^\s*\'(.*)\'\s+\'(.*)\'/io;
+ if (/^\s*cl\w+\s+(.*)/io) {
+ doclient($1);
+ last;
+ }
}
- dbg('connect', "Connected to $call, starting normal protocol");
+ dbg('connect', "Connected to $call ($csort), starting normal protocol");
dbgsub('connect');
# if we get here we are connected
# close W;
$stdin = $rfh;
$stdout = $wfh;
- $csort = 'telnet' if $sort eq 'prog';
+ $csort = 'telnet' if $csort eq 'prog';
} elsif ($csort eq 'telnet') {
# open(STDIN, "<&$sock");
# open(STDOUT, ">&$sock");
$outbound = 1;
$connsort = $csort;
$stdout->autoflush(1);
+ $mode = ($connsort eq 'ax25') ? 1 : $mode;
close STDIN;
close STDOUT;
close STDERR;
}
-$mode = ($connsort eq 'ax25') ? 1 : 2;
setmode();
+# adjust the callsign if it has an SSID, SSID <= 8 are legal > 8 are netrom connections
+$call =~ s/-0$//; # strip off -0 as this is equiv to just call on its own
+my ($scall, $ssid) = split /-/, $call;
+$ssid = undef unless $ssid && $ssid =~ /^\d+$/;
+if ($ssid) {
+ $ssid = 15 if $ssid > 15;
+ if ($connsort eq 'ax25') {
+ if ($ssid > 8) {
+ $ssid = 15 - $ssid;
+ }
+ }
+ $call = "$scall-$ssid";
+}
+
+
$conn = Msg->connect("$clusteraddr", $clusterport, \&rec_socket);
if (! $conn) {
if (-r "$data/offline") {
open IN, "$data/offline" or die;
while (<IN>) {
s/\n/\r/og if $mode == 1;
- print $stdout;
+ print $stdout $_;
}
close IN;
} else {
for (;;) {
my $t;
- Msg->event_loop(1, 0.010);
+ Msg->event_loop(1, 1);
$t = time;
if ($t > $lasttime) {
if ($outqueue) {
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