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  • 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.

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initramfs-tools-script
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# eventually be "/scripts/init-premount/mandos" in the initrd.img
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# file.
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# No initramfs pre-requirements.
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PREREQ="udev"
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prereqs()
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{
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        ;;
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esac
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. /scripts/functions
 
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for param in `cat /proc/cmdline`; do
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    case "$param" in
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        mandos=off) exit 0;;
 
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        ip=*) IPOPTS="${param#ip=}" ;;
 
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        mandos=*)
 
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            # Split option line on commas
 
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            old_ifs="$IFS"
 
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            IFS="$IFS,"
 
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            for mpar in ${param#mandos=}; do
 
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                IFS="$old_ifs"
 
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                case "$mpar" in
 
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                    off) exit 0 ;;
 
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                    connect) connect="" ;;
 
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                    connect:*) connect="${mpar#connect:}" ;;
 
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                    *) log_warning_msg "$0: Bad option ${mpar}" ;;
 
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                esac
 
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            done
 
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            unset mpar
 
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            IFS="$old_ifs"
 
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            unset old_ifs
 
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            ;;
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    esac
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done
 
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unset param
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chmod a=rwxt /tmp
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test -r /conf/conf.d/cryptroot
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test -w /conf/conf.d
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# Get DEVICE from /conf/initramfs.conf and other files
 
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. /conf/initramfs.conf
 
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for conf in /conf/conf.d/*; do
 
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    [ -f ${conf} ] && . ${conf}
 
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done
 
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if [ -e /conf/param.conf ]; then
 
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    . /conf/param.conf
 
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fi
 
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# Override DEVICE from sixth field of ip= kernel option, if passed
 
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case "$IPOPTS" in
 
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    *:*:*:*:*:*)                # At least six fields
 
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        # Remove the first five fields
 
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        device="${IPOPTS#*:*:*:*:*:}"
 
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        # Remove all fields except the first one
 
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        DEVICE="${device%%:*}"
 
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        ;;
 
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esac
 
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# Add device setting (if any) to plugin-runner.conf
 
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if [ "${DEVICE+set}" = set ]; then
 
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    # Did we get the device from an ip= option?
 
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    if [ "${device+set}" = set ]; then
 
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        # Let ip= option override local config; append:
 
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        cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
 
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        --options-for=mandos-client:--interface=${DEVICE}
 
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EOF
 
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    else
 
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        # Prepend device setting so any later options would override:
 
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        sed -i -e \
 
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            '1i--options-for=mandos-client:--interface='"${DEVICE}" \
 
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            /conf/conf.d/mandos/plugin-runner.conf
 
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    fi
 
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fi
 
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unset device
 
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# If we are connecting directly, run "configure_networking" (from
 
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# /scripts/functions); it needs IPOPTS and DEVICE
 
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if [ "${connect+set}" = set ]; then
 
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    configure_networking
 
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    if [ -n "$connect" ]; then
 
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        cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
 
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        --options-for=mandos-client:--connect=${connect}
 
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EOF
 
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    fi
 
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fi
 
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# Do not replace cryptroot file unless we need to.
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replace_cryptroot=no
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# Our keyscript
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mandos=/lib/mandos/plugin-runner
 
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test -x "$mandos"
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# parse /conf/conf.d/cryptroot.  Format:
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# target=sda2_crypt,source=/dev/sda2,key=none,keyscript=/foo/bar/baz