dcadduser

#!/bin/sh

USERDB="/etc/dovecot/users"
DOMAIN="" #set this variable for adding domain after username

check_user()
{
    if [ -n "$DOMAIN" ];then #add default domain if set this
	USERNAME="$USERNAME@$DOMAIN"
    fi
    USERNAME=`echo "$USERNAME"|awk '{print tolower($0)}'` #to lowercase
    
    if [ ! -f "$USERDB" ];then
	return;
    fi
    
    for V in $(awk -F':' '{print $1}' "$USERDB")
    do
	V=`echo "$V"|awk '{print tolower($0)}' ` #to lowercase
	
	if [ "$USERNAME" == "$V" ]; then
	    echo "User exist!"
	    exit 1
	fi
    done
}

if [ "$1" = "--help" -o "$1" = "-h" ];then
    echo "Use "`basename $0` " <username> <password>"
    echo "<username> - username and domain (e.g. user@example.org)"
    echo "<password> - password"
    echo
    echo "If no parameters, script running in interactive mode"
    exit 0
fi

if [ "x$1" = "x" -o "x$2" = "x" ];then
    #interactive mode
    read -p 'Username: ' USERNAME
    check_user
    read -sp 'Password: ' P1
    echo
    read -sp 'Repeat password: ' P2
    echo
    
    if [ -z "$USERNAME" ]; then
	echo "Username not entered!"
	exit 1
    fi
    
    if [ -z "$P1" ]; then
	echo "Password not entered!"
	exit 1
    fi
    
    if [ -z "$P2" ]; then
	echo "Password not entered!"
	exit 1
    fi
    
    if [ "$P1" != "$P2" ]; then
	echo "Passwords do not match!"
	exit 1
    fi
    
    PASSWORD="$P1"
else
    USERNAME="$1"
    check_user
    PASSWORD="$2"
fi
cp "$USERDB" "$USERDB-" #backup file before user add

echo $USERNAME:$(doveadm pw -s ssha512 -p $PASSWORD):::::: >> $USERDB