Jailkit Script

#!/bin/bash

JAILPREFIX=/home
HOMEDIR=/home

USERNAME=$1

[ "$1" == "" ] && {
        echo "Syntax: ${0} <username>"
        exit 1
}

echo -e "\nCreating jail in ${JAILPREFIX}/${USERNAME}"
jk_init -v -j ${JAILPREFIX}/${USERNAME} sftp scp jk_lsh

echo -e "\nCreating home directory in ${JAILPREFIX}/${USERNAME}${HOMEDIR}"
mkdir -p ${JAILPREFIX}/${USERNAME}${HOMEDIR}
rsync -rtv /etc/skel/ ${JAILPREFIX}/${USERNAME}${HOMEDIR}/

echo -e "\nAdding user/group ${USERNAME}"
useradd --home-dir ${JAILPREFIX}/${USERNAME}/.${HOMEDIR} --user-group --shell /usr/sbin/jk_chrootsh ${USERNAME}
chown -R ${USERNAME}.${USERNAME} ${JAILPREFIX}/${USERNAME}${HOMEDIR}

echo -e "\nGenerating secure password"
PASSWORD=`pwgen -sB 12 1`
echo ${USERNAME}:${PASSWORD} | chpasswd

USERID=`id -u ${USERNAME}`
GROUPID=`id -g ${USERNAME}`

echo -e "\nUpdating /etc/password inside jail"
echo "${USERNAME}:x:${USERID}:${GROUPID}::${HOMEDIR}:/usr/sbin/jk_lsh" >> ${JAILPREFIX}/${USERNAME}/etc/passwd

echo -e "\nUpdating /etc/group inside jail"
echo "${USERNAME}:x:${GROUPID}:" >> ${JAILPREFIX}/${USERNAME}/etc/group

echo -e "\nUpdating jk_lsh.ini to allow scp and sftp"
cat >> ${JAILPREFIX}/${USERNAME}/etc/jailkit/jk_lsh.ini << EOL
[${USERNAME}]
paths= /usr/bin, /usr/lib
executables= /usr/bin/scp, /usr/lib/openssh/sftp-server
EOL

echo -e "\nSummary"
echo -e "-----------------------------------------------------"
echo -e "Jail: ${JAILPREFIX}/${USERNAME}"
echo -e "Home: ${JAILPREFIX}/${USERNAME}${HOMEDIR}"
echo -e "-------------------------------------------------------"
echo -e "Username: ${USERNAME} (UID: ${USERID})"
echo -e "Group:    ${USERNAME} (GID: ${GROUPID})"
echo -e "Password: ${PASSWORD}"
echo -e "-------------------------------------------------------"
echo -e "\n"