126 lines
2.6 KiB
Perl
Executable file
126 lines
2.6 KiB
Perl
Executable file
#!/usr/bin/perl
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=head1 NAME
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wssh - wait for ssh port to open and then ssh
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=head1 SYNOPSIS
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B<wssh> [sshoptions] I<host>
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=head1 DESCRIPTION
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B<wssh> waits for port 22 to open and then B<ssh>s to the given I<host>.
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=head1 EXAMPLE
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B<wssh example.com>
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=head1 EXIT STATUS
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Returns the same as B<ssh>.
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=head1 REPORTING BUGS
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Contact Ole Tange <ole@tange.dk>.
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=head1 AUTHOR
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Copyright (C) 2012 Ole Tange <ole@tange.dk>.
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=head1 LICENSE
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Copyright (C) 2012 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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at your option any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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=head1 DEPENDENCIES
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B<wssh> uses Perl, and B<w4it-for-port-open>.
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=head1 SEE ALSO
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B<ssh>(1)
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=cut
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use Getopt::Long;
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my @argv = @ARGV;
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get_options_from_array(\@ARGV,[]);
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my $host = shift @ARGV;
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@ARGV=("ssh",@argv);
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$host =~ s/.*\@//;
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print $host;
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system("w4it-for-port-open $host 22");
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exec @ARGV;
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sub options_hash {
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# Returns a hash of the GetOptions config
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return
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("1|2|4|6|A|a|C|f|g|K|k|M|N|n|q|s|T|t|V|v|X|x|Y|y" => \$opt::one,
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"b|c|D|E|e|F|I|i|L|l|m|O|o|p|Q|R|S|W|w=s" => \$opt::arg,
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);
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}
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sub get_options_from_array {
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# Run GetOptions on @array
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# Returns:
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# true if parsing worked
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# false if parsing failed
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# @array is changed
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my ($array_ref, @keep_only) = @_;
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if(not @$array_ref) {
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# Empty array: No need to look more at that
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return 1;
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}
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# A bit of shuffling of @ARGV needed as GetOptionsFromArray is not
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# supported everywhere
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my @save_argv;
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my $this_is_ARGV = (\@::ARGV == $array_ref);
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if(not $this_is_ARGV) {
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@save_argv = @::ARGV;
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@::ARGV = @{$array_ref};
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}
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# If @keep_only set: Ignore all values except @keep_only
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my %options = options_hash();
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if(@keep_only) {
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my (%keep,@dummy);
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@keep{@keep_only} = @keep_only;
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for my $k (grep { not $keep{$_} } keys %options) {
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# Store the value of the option in @dummy
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$options{$k} = \@dummy;
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}
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}
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my $retval = GetOptions(%options);
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if(not $this_is_ARGV) {
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@{$array_ref} = @::ARGV;
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@::ARGV = @save_argv;
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}
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return $retval;
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}
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