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File name : stunnel3
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#!/usr/bin/perl
#
# stunnel3      Perl wrapper to use stunnel 3.x syntax in stunnel >=4.05
# Copyright (C) 1998-2018 Michal Trojnara <Michal.Trojnara@stunnel.org>
# Version:      2.03
# Date:         2011.10.22
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, see <http://www.gnu.org/licenses>.

use POSIX;
use Getopt::Std;

# Configuration - path to stunnel (version >=4.05)
$stunnel_bin='/usr/bin/stunnel4';

# stunnel3 script body begins here
($read_fd, $write_fd)=POSIX::pipe();
$pid=fork;
die "Can't fork" unless defined $pid;
if($pid) { # parent
    POSIX::close($write_fd);
    exec "$stunnel_bin -fd $read_fd";
    die "$stunnel_bin exec failed";
}
# child
POSIX::close($read_fd);
open(STUNNEL, ">&$write_fd");
# comment out the next line to see the config file
select(STUNNEL);

getopts('cTWfD:O:o:C:p:v:a:A:t:N:u:n:E:R:B:I:d:s:g:P:r:L:l:');

print("client = yes\n") if defined $opt_c;
print("transparent = yes\n") if defined $opt_T;
print("RNDoverwrite = yes\n") if defined $opt_W;
print("foreground = yes\n") if defined $opt_f;
print("debug = $opt_D\n") if defined $opt_D;
print("socket = $opt_O\n") if defined $opt_O;
print("output = $opt_o\n") if defined $opt_o;
print("ciphers = $opt_C\n") if defined $opt_C;
print("cert = $opt_p\n") if defined $opt_p;
print("verify = $opt_v\n") if defined $opt_v;
print("CApath = $opt_a\n") if defined $opt_a;
print("CAfile = $opt_A\n") if defined $opt_A;
print("session = $opt_t\n") if defined $opt_t;
print("service = $opt_N\n") if defined $opt_N;
print("ident = $opt_u\n") if defined $opt_u;
print("protocol = $opt_n\n") if defined $opt_n;
print("EGD = $opt_E\n") if defined $opt_E;
print("RNDfile = $opt_R\n") if defined $opt_R;
print("RNDbytes = $opt_B\n") if defined $opt_B;
print("local = $opt_I\n") if defined $opt_I;
print("accept = $opt_d\n") if defined $opt_d;
print("setuid = $opt_s\n") if defined $opt_s;
print("setgid = $opt_g\n") if defined $opt_g;
print("pid = $opt_P\n") if defined $opt_P;
print("connect = $opt_r\n") if defined $opt_r;
print("pty = yes\n"), $opt_l=$opt_L if defined $opt_L;
print("exec = $opt_l\nexecArgs = " . join(' ', $opt_l, @ARGV) . "\n") if defined $opt_l;
print("[stunnel3]\n") if defined $opt_d;

close(STUNNEL);

# stunnel3 script body ends here