93 lines
2.7 KiB
Python
Executable File
93 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#
|
|
# Copyright 2007 sense.lab e.V.
|
|
#
|
|
# This file is part of the CryptoBox.
|
|
#
|
|
# The CryptoBox 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.
|
|
#
|
|
# The CryptoBox 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 the CryptoBox; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
#
|
|
|
|
__revision__ = "$Id$"
|
|
|
|
|
|
## necessary: otherwise CryptoBoxRootActions.py will refuse to execute this script
|
|
PLUGIN_TYPE = "cryptobox"
|
|
|
|
STUNNEL_BIN = "/usr/bin/stunnel4"
|
|
|
|
import sys
|
|
import os
|
|
|
|
|
|
def _get_username():
|
|
if ("SUPERCMD" in os.environ) and ("ORIG_USER" in os.environ):
|
|
return os.environ["ORIG_USER"]
|
|
elif "USER" in os.environ:
|
|
return os.environ["USER"]
|
|
else:
|
|
return "cryptobox"
|
|
|
|
|
|
def run_stunnel(cert_file, src_port, dst_port, pid_file):
|
|
import subprocess
|
|
if not src_port.isdigit():
|
|
sys.stderr.write("Source port is not a number: %s" % src_port)
|
|
return False
|
|
if not dst_port.isdigit():
|
|
sys.stderr.write("Destination port is not a number: %s" % dst_port)
|
|
return False
|
|
if not os.path.isfile(cert_file):
|
|
sys.stderr.write("The certificate file (%s) does not exist!" % cert_file)
|
|
return False
|
|
username = _get_username()
|
|
if not username:
|
|
sys.stderr.write("Could not retrieve the username with uid=%d." % os.getuid())
|
|
return False
|
|
## the environment (especially PATH) should be clean, as 'stunnel' cares about
|
|
## this in a setuid situation
|
|
proc = subprocess.Popen(
|
|
shell = False,
|
|
env = {},
|
|
stdin = subprocess.PIPE,
|
|
args = [ STUNNEL_BIN,
|
|
"-fd",
|
|
"0"])
|
|
proc.stdin.write("setuid = %s\n" % username)
|
|
proc.stdin.write("pid = %s\n" % pid_file)
|
|
proc.stdin.write("[cryptobox-server]\n")
|
|
proc.stdin.write("connect = %s\n" % src_port)
|
|
proc.stdin.write("accept = %s\n" % dst_port)
|
|
proc.stdin.write("cert = %s\n" % cert_file)
|
|
(output, error) = proc.communicate()
|
|
return proc.returncode == 0
|
|
|
|
|
|
if __name__ == "__main__":
|
|
args = sys.argv[1:]
|
|
|
|
self_bin = sys.argv[0]
|
|
|
|
if len(args) != 4:
|
|
sys.stderr.write("%s: invalid number of arguments (%d instead of %d))\n" % \
|
|
(self_bin, len(args), 4))
|
|
sys.exit(1)
|
|
|
|
if not run_stunnel(args[0], args[1], args[2], args[3]):
|
|
sys.stderr.write("%s: failed to run 'stunnel'!" % self_bin)
|
|
sys.exit(100)
|
|
|
|
sys.exit(0)
|
|
|