#!/bin/bash
#----------------------------------------------------------------------------
# /var/install/bin/samba-smbpasswd-user - change password of an existing samba user
#
# Copyright (c) 2002-2013 Thomas Bork, tom(at)eisfair(dot)net
#
# usage: /var/install/bin/samba-smbpasswd-user
#    or: /var/install/bin/samba-smbpasswd-user "user" "password"
#
# Creation   : 2002-12-16 tb
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------
# set -x
. /var/install/include/eislib

debuglevel=`grep 'debug level =' /etc/smb.conf | cut -d'=' -f2 | sed 's# ##g'`
smbpasswdbin='/usr/bin/smbpasswd'
pdbeditbin='/usr/bin/pdbedit'
tdbsamfile='/etc/passdb.tdb'

case $# in
0)
    interactive='true'
    user=''
    password=''
    ;;
2)
    interactive='false'
    user="$1"
    password="$2"
    (echo "$password"; echo "$password") | "$smbpasswdbin" -D "$debuglevel" -s "$user" 1>/dev/null
    if [ $? -eq 0 ]
    then
        mecho --info "Password changed for samba user $user."
    fi
    ;;
*)
    echo "usage: /var/install/bin/samba-smbpasswd-user" >&2
    echo "   or: /var/install/bin/samba-smbpasswd-user \"user\" \"password\"" >&2
    exit 1
    ;;
esac

if [ "$interactive" = "true" ]
then
    clrhome
    mecho --info "Change Samba Password of existing Samba User"
    echo

    if [ -z "$user" ]
    then
        echo "Existing Samba User to change password (e.g. 'www'):"
        echo
        read user
    fi

    if [ -z "$user" ]
    then
        mecho --error "No Password changed!"
        exit 1
    fi

    if ! `$pdbeditbin -Lw | grep -q "^$user:"`
    then
        mecho --error "Failed to find entry for samba user $user in $tdbsamfile!"
        exit 1
    fi

    if [ -z "$password" ]
    then
        echo
        echo "Please Enter your Password."
        echo "The password will not be written to console for security reasons:"
        stty -echo
        read password
        stty echo
    fi

   (echo "$password"; echo "$password") | "$smbpasswdbin" -D "$debuglevel" -s "$user" 1>/dev/null
    if [ $? -eq 0 ]
    then
        mecho --info "Password changed for samba user $user."
    else
        mecho --error "Cannot change password for samba user $user."
    fi

    anykey
fi