cryptonas-branches/translation-base-v0.4/event-scripts/samba

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#!/bin/sh
#
# Manage samba shares
# - after mounting: add the new samba share
# - before umounting: disable and remove the samba share
#
# The following line _must_ be added to your /etc/samba/smb.conf:
# include = /var/cache/cryptobox-server/settings/misc/samba-include.conf
# and you should create this file and chown it to the cryptobox user:
# touch /var/cache/cryptobox-server/settings/misc/samba-include.conf
#
#
# Params: $event $device $volume_name $volume_type $mount_dir
#
# event: premount | postmount | preumount | postumount
# device: name of the device
# volume_name: name of the volume
# volume_type: plain | luks
# mount_dir: mount directory
#
set -eu
# --------------=-=-=- some settings -=-=-=----------------
# adapt this part of the file to your needs
SAMBA_CONTROL=smbcontrol
SAMBA_CONF_DIR=/var/cache/cryptobox-server/settings/misc/samba.conf.d
MAIN_SAMBA_CONF_FILE=/var/cache/cryptobox-server/settings/misc/samba-include.conf
# this smb.conf snippet will get used for every published share
# _VOLUME_NAME and _SHARE_DIR_ are replaced by their actual values
SAMBA_SHARE_TEMPLATE=$(cat - <<-"EOF"
[_VOLUME_NAME_]
comment = CryptoBox share
path = _SHARE_DIR_
read only = no
guest ok = yes
EOF
)
# -----=-=-=- check environment and parameters -=-=-=------
# check if samba is installed
if which "$SAMBA_CONTROL"
then true
else echo "samba not installed ('$SAMBA_CONTROL' not found)" >&2
exit 1
fi
# create include-file directory
mkdir -p "$SAMBA_CONF_DIR"
# create the main include file
touch "$MAIN_SAMBA_CONF_FILE"
# check event argument
if test "$#" -eq 0
then echo "Syntax: $(basename $0) EVENT [EVENT_INFORMATION]" >&2
exit 1
fi
event=$1
# ------------=-=-=- some functions -=-=-=-----------------
update_include_conf_file()
{
( echo "# this file was automatically generated by the CryptoBox"
echo "# DO NOT EDIT - all changes will get lost!"
find "$SAMBA_CONF_DIR" -type f -name "*.conf" | while read fname
do mdir=$(grep "path.*=" "$fname" | cut -f 2 -d "=" | sed 's/^[ \t]*//')
# check if the mount directory still exists
if test -d "$mdir"
then echo "include = $fname"
else rm "$fname"
fi
done ) >"$MAIN_SAMBA_CONF_FILE"
}
send_reload_command()
{
# reload config files
"$SAMBA_CONTROL" smbd reload-config
}
empty_conf_dir()
{
find "$SAMBA_CONF_DIR" -type f -name "*.conf" -print0 | xargs -0 rm
}
send_close_share_command()
{
# close all connections and deny further requests
"$SAMBA_CONTROL" smbd close-share "$1"
}
# -----------------=-=-=- main -=-=-=----------------------
case "$event" in
premount|postumount )
;;
postmount )
vol_name=$3
mount_dir=$5
echo "$SAMBA_SHARE_TEMPLATE" | sed "s#_SHARE_DIR_#$mount_dir#g; s#_VOLUME_NAME_#$vol_name#g" >"$SAMBA_CONF_DIR/${vol_name}.conf"
update_include_conf_file
send_reload_command
;;
preumount )
vol_name=$3
send_close_share_command "$vol_name"
rm "$SAMBA_CONF_DIR/${vol_name}.conf" || true
update_include_conf_file
send_reload_command
;;
shutdown|bootup )
empty_conf_dir
;;
* )
# ignore all unsupported events
exit 0
;;
esac
exit 0