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50 lines
1.4 KiB
Perl
Executable File
50 lines
1.4 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# $Id: telnet_wrapper 1172 2019-06-29 07:27:24Z mueller $
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# SPDX-License-Identifier: GPL-3.0-or-later
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# Copyright 2009-2019 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
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#
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# Revision History:
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# Date Rev Vers Comment
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# 2017-05-25 899 1.1 add 'r' --> reset and stty sane handling
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# 2009-11-07 246 1.0 Initial version
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#
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use 5.14.0; # require Perl 5.14 or higher
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use strict; # require strict checking
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if (scalar(@ARGV) != 2) {
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print STDERR "usage: telnet_wrapper host port\n";
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exit 1;
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}
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my $host = $ARGV[0];
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my $port = $ARGV[1];
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print "$host $port\n";
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my $telnet = `which telnet`;
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chomp $telnet;
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while(1) {
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my $rc = system $telnet, $host, $port;
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print STDERR "telnet failed with rc=$rc\n" if $rc != 0;
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print "enter q or <^D> to quit, r for tty reset, or <ENTER> to reconnect: ";
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my $buf = <STDIN>;
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unless ($buf) { # quit if EOF
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print "\n";
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exit 0;
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}
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chomp $buf;
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next if $buf eq ""; # <ENTER>
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exit 0 if $buf eq "q"; # 'q'
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if ($buf eq "r") { # 'r'
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my $rc = system 'reset';
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print STDERR "'reset' failed with rc=$rc\n" if $rc != 0;
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$rc = system 'stty', 'sane';
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print STDERR "'stty sane' failed with rc=$rc\n" if $rc != 0;
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} else {
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print "Invalid input '$buf', only ^D,<ENTER> or 'r' allowed\n";
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}
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}
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