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