#!/bin/bash
# info: archive directory
# options: USER ARCHIVE SOURCE
#
# The function creates tar archive

user=$1
archive=$2
src=$3

# Checking arguments
if [ -z "$src" ]; then
    echo "Usage: USER ARCHIVE SOURCE"
    exit 1
fi

# Checking vesta user
if [ ! -e "$VESTA/data/users/$user" ]; then
    echo "Error: vesta user $user doesn't exist"
    exit 3
fi

# Checking user homedir
homedir=$(grep "^$user:" /etc/passwd | cut -f 6 -d :)
if [ -z $homedir ]; then
    echo "Error: user home directory doesn't exist"
    exit 12
fi

# Checking archive
if [ -e "$archive.tar.gz" ]; then
    echo "Error: archive already exist $archive.tar.gz"
    exit 1
fi

# Checking source path
rpath=$(readlink -f "$src")
if [ -z "$(echo $rpath |egrep "^/tmp|^$homedir")" ]; then
    echo "Error: invalid source path $src"
    exit 1
fi

# Parsing current directory
d=$(dirname "$src")

# Removing leading file path
f=$(echo "$src" |sed -e "s|$d/||")

# Creating tar.gz archive
sudo -u $user tar -czf "$archive.tar.gz" -C $d $f >/dev/null 2>&1
if [ "$?" -ne 0 ]; then
    echo "Error: archive $archive.tar.gz was not created"
    exit 3
fi

exit
