#!/bin/bash

systemctl stop mariadb

mariadb_cfdir=/etc/mysql/
dc=$mysql_cfgdir/mariadbBackup.cnf
mariadb_rundir=/var/run/mysqld/
mariadb_statedir=/var/lib/mysql

if [ -e "$dc" -a -n "`fgrep mysql_upgrade $dc 2>/dev/null`" ]; then
    pass="`sed -n 's/^[ ]*password *= *// p' $dc | head -n 1`"
    # Basedir is deprecated. Remove the option if it's in an existing mariadbBackup.cnf
    sed -i '/basedir/d' "$dc"
else
    pass=`perl -e 'print map{("a".."z","A".."Z",0..9)[int(rand(62))]}(1..16)'`;
    if [ ! -d "$mariadb_cfdir" ]; then
      install -o 0 -g 0 -m 0755 -d $mariadb_cfdir
    fi
    umask 066
    cat /dev/null > $dc
    umask 022
    echo "# Automatically generated DONT'T TOUCH !!!!!!"           >>$dc
    echo "[client]"                                                >>$dc
    echo "host     = localhost"                                    >>$dc
    echo "user     = maria-sys-maint"                              >>$dc
    echo "password = $pass"                                        >>$dc
    echo "socket   = $mariadb_rundir/mysqld.sock"                  >>$dc
    echo "[mysql_upgrade]"                                         >>$dc
    echo "host     = localhost"                                    >>$dc
    echo "user     = maria-sys-maint"	                           >>$dc
    echo "password = $pass"                                        >>$dc
    echo "socket   = $mariadb_rundir/mysqld.sock"                  >>$dc
fi

# If this dir chmod go+w then the admin did it. But this file should not.
    chown 0:0 $dc
    chmod 0600 $dc

# If database doesn't exist we create it.
mkdir /var/lib/mariadb-files
mariadb_filesdir=/var/lib/mariadb-files

if [ ! "$(ls -A "${mariadb_statedir}")" ] && [ -d "${mariadb_filesdir}" ]; then
    existingdatabase=0
    initfile=`mktemp --tmpdir=/var/lib/mariadb-files/`
    touch "$initfile"
    chmod 600 "$initfile"
    chown mysql:mysql "$initfile"
    echo "USE mysql; " >> "$initfile"
    db_get mysql-server/root_password && rootpw="$RET"
    if [ ! -z "$rootpw" ]; then
      rootpw=$(printf %q "${rootpw}")
      echo "ALTER USER 'root'@'localhost' IDENTIFIED BY '$rootpw';" >> "$initfile"
    fi
    echo "CREATE USER IF NOT EXISTS 'maria-sys-maint'@'localhost' IDENTIFIED BY '$pass';" >> "$initfile"
    echo "GRANT ALL ON *.* TO 'maria-sys-maint'@'localhost' WITH GRANT OPTION;" >> "$initfile"
    echo "SHUTDOWN;" >> "$initfile"
    mysqld --initialize-insecure --user=mysql --init-file="$initfile"> /dev/null 2>&1 || true
    rm "$initfile"
else
    existingdatabase=1
fi

systemctl start mariadb

exit 0