/mandos/trunk

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/trunk

« back to all changes in this revision

Viewing changes to network-hooks.d/openvpn

  • Committer: Teddy Hogeborn
  • Date: 2015-07-01 20:01:26 UTC
  • mto: This revision was merged to the branch mainline in revision 759.
  • Revision ID: teddy@recompile.se-20150701200126-qb3f6c3jcas2f4og
mandos-client: Try to start a plugin to add and remove a local route.

* debian/mandos-client.README.Debian: Add setting of environment
                                      variable MANDOSPLUGINHELPERDIR
                                      to command line testing
                                      mandos-client.
* mandos-client.c (raise_privileges): Moved to top of file.
                  (raise_privileges_permanently): - '' -
                  (lower_privileges): - '' -
                  (lower_privileges_permanently): - '' -
  (add_remove_local_route, add_local_route, remove_local_route): New.
  (start_mandos_communication): Set SOCK_CLOEXEC flag on socket.  Run
                                the above functions to add (and
                                remove) local route, if the conditions
                                indicates it could help.
  (run_network_hooks): Use O_DIRECTORY, O_PATH, and O_CLOEXEC flags
                       when opening network hook directory. Do
                       TEMP_FAILURE_RETRY around opening of /dev/null
                       and network hook executables.  Move redirecting
                       of stdout and stderr to as late as possible
                       before fexecve().
  (main): Use O_DIRECTORY and O_PATH when opening temporary directory.
* plugins.d/mandos-client.xml (ENVIRONMENT): Document usage of the
                                             MANDOSPLUGINHELPERDIR
                                             environment variable.

Show diffs side-by-side

added added

removed removed

Lines of Context:
network-hooks.d/openvpn
 
1
#!/bin/sh
 
2
#
 
3
# This is an example of a Mandos client network hook.  This hook
 
4
# brings up an OpenVPN interface as specified in a separate
 
5
# configuration file.  To be used, this file and any needed
 
6
# configuration file(s) should be copied into the
 
7
# /etc/mandos/network-hooks.d directory.
 
8
# 
 
9
# Copyright © 2012 Teddy Hogeborn
 
10
# Copyright © 2012 Björn Påhlsson
 
11
# 
 
12
# Copying and distribution of this file, with or without modification,
 
13
# are permitted in any medium without royalty provided the copyright
 
14
# notice and this notice are preserved.  This file is offered as-is,
 
15
# without any warranty.
 
16
 
 
17
set -e
 
18
 
 
19
CONFIG="openvpn.conf"
 
20
 
 
21
# Extract the "dev" setting from the config file
 
22
VPNDEVICE=`sed -n -e 's/[[:space:]]#.*//' \
 
23
    -e 's/^[[:space:]]*dev[[:space:]]\+//p' \
 
24
    "$MANDOSNETHOOKDIR/$CONFIG"`
 
25
 
 
26
PIDFILE=/run/openvpn-mandos.pid
 
27
 
 
28
# Exit if no device set in config
 
29
if [ -z "$VPNDEVICE" ]; then
 
30
    exit
 
31
fi
 
32
 
 
33
# Exit if DEVICE is set and it doesn't match the VPN interface
 
34
if [ -n "$DEVICE" ]; then
 
35
    case "$DEVICE" in
 
36
        *,"$VPNDEVICE"*|"$VPNDEVICE"*) :;;
 
37
        *) exit;;
 
38
    esac
 
39
fi
 
40
 
 
41
openvpn=/usr/sbin/openvpn
 
42
 
 
43
do_start(){
 
44
    "$openvpn" --cd "$MANDOSNETHOOKDIR" --daemon 'openvpn(Mandos)' \
 
45
        --writepid "$PIDFILE" --config "$CONFIG"
 
46
     sleep "$DELAY"
 
47
}
 
48
 
 
49
do_stop(){
 
50
    PID="`cat \"$PIDFILE\"`"
 
51
    if [ "$PID" -gt 0 ]; then
 
52
        kill "$PID"
 
53
    fi
 
54
}
 
55
 
 
56
case "${MODE:-$1}" in
 
57
    start|stop)
 
58
        do_"${MODE:-$1}"
 
59
        ;;
 
60
    files)
 
61
        echo "$openvpn"
 
62
        ;;
 
63
    modules)
 
64
        echo tun
 
65
        ;;
 
66
esac