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  • Committer: Teddy Hogeborn
  • Date: 2015-07-01 20:01:26 UTC
  • mto: (237.7.307 trunk)
  • mto: This revision was merged to the branch mainline in revision 325.
  • 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.

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network-hooks.d/openvpn
 
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#!/bin/sh
 
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#
 
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# This is an example of a Mandos client network hook.  This hook
 
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# brings up an OpenVPN interface as specified in a separate
 
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# configuration file.  To be used, this file and any needed
 
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# configuration file(s) should be copied into the
 
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# /etc/mandos/network-hooks.d directory.
 
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# 
 
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# Copyright © 2012 Teddy Hogeborn
 
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# Copyright © 2012 Björn Påhlsson
 
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# 
 
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# Copying and distribution of this file, with or without modification,
 
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# are permitted in any medium without royalty provided the copyright
 
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# notice and this notice are preserved.  This file is offered as-is,
 
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# without any warranty.
 
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set -e
 
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CONFIG="openvpn.conf"
 
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# Extract the "dev" setting from the config file
 
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VPNDEVICE=`sed -n -e 's/[[:space:]]#.*//' \
 
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    -e 's/^[[:space:]]*dev[[:space:]]\+//p' \
 
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    "$MANDOSNETHOOKDIR/$CONFIG"`
 
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PIDFILE=/run/openvpn-mandos.pid
 
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# Exit if no device set in config
 
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if [ -z "$VPNDEVICE" ]; then
 
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    exit
 
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fi
 
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# Exit if DEVICE is set and it doesn't match the VPN interface
 
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if [ -n "$DEVICE" ]; then
 
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    case "$DEVICE" in
 
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        *,"$VPNDEVICE"*|"$VPNDEVICE"*) :;;
 
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        *) exit;;
 
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    esac
 
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fi
 
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openvpn=/usr/sbin/openvpn
 
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do_start(){
 
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    "$openvpn" --cd "$MANDOSNETHOOKDIR" --daemon 'openvpn(Mandos)' \
 
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        --writepid "$PIDFILE" --config "$CONFIG"
 
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     sleep "$DELAY"
 
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}
 
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do_stop(){
 
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    PID="`cat \"$PIDFILE\"`"
 
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    if [ "$PID" -gt 0 ]; then
 
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        kill "$PID"
 
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    fi
 
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}
 
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case "${MODE:-$1}" in
 
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    start|stop)
 
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        do_"${MODE:-$1}"
 
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        ;;
 
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    files)
 
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        echo "$openvpn"
 
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        ;;
 
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    modules)
 
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        echo tun
 
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        ;;
 
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esac