#!/bin/sh

set -e

usage() {
	echo "Usage: ${0} {tel|uid|uidNumber|cn|...} <STRING>"
	echo "e.g. $0 uid dxk1"
}

#LDAP_SERVER="ldap.bfh.ch"
#LDAP_SERVER="ldap-master.bfh.ch"

#LDAP_SERVER="ldap1.bfh.ch"
#LDAP_SERVER="ldap2.bfh.ch"
#LDAP_SERVER="ldap3.bfh.ch"

#LDAP_SERVER="ldapdmz1.bfh.ch"
#LDAP_SERVER="ldapdmz2.bfh.ch"
#LDAP_SERVER="ldapdmz3.bfh.ch"

#LDAP_SERVER="ldap1.bfh.science"
#LDAP_SERVER="ldap2.bfh.science"
#LDAP_SERVER="ldap3.bfh.science"
#LDAP_SERVER="ldap4.bfh.science"

PASS="iPaw-e45zn"
ACTION="${1}"
PARAM="${2}"

if [ $# -lt 1 ]
then
	echo "Missing ARG(s)"
	usage
	exit 1
fi

NAME=$(cat /etc/hostname)
case "$NAME" in
	*bfh.science)
		LDAP_SERVER="ldap.bfh.science"
		AUTHSTRING=""
		DC="dc=bfh"
		;;

	*bfh.ch)
		IP4=$(ip a | grep 147.87) || IP4=""
		IP6=$(ip a | grep 2a07:6b47) || IP6=""
		if [ -z "$IP4" ] && [ -z "$IP6" ];
		then
			LDAP_SERVER="ldapdmz.bfh.ch"
		else
			LDAP_SERVER="ldap.bfh.ch"
		fi
		AUTHSTRING="-D 'cn=unix-nss,ou=srv-account,dc=bfh,dc=ch' -w $PASS"
		DC="dc=bfh,dc=ch"
		;;

	*)
		LDAP_SERVER="ldapdmz.bfh.ch"
		AUTHSTRING="-D 'cn=unix-nss,ou=srv-account,dc=bfh,dc=ch' -w $PASS"
		DC="dc=bfh,dc=ch"
		;;
esac

if [ -z "$PARAM" ]
then
	ldapsearch -LLL -x -s sub "$AUTHSTRING" -H ldaps://"${LDAP_SERVER}":636 -b "$DC" "$ACTION"
else
	case "${ACTION}" in
		tel|telephoneNumber)
			CMD="ldapsearch -LLL -x -s sub ${AUTHSTRING} -H ldaps://${LDAP_SERVER}:636 -b $DC telephoneNumber=*${PARAM} | grep --color=never -E '^(cn|telephoneNumber): '"
			;;
		*)
			CMD="ldapsearch -LLL -x -s sub ${AUTHSTRING} -H ldaps://${LDAP_SERVER}:636 -b $DC $ACTION=${PARAM}"
			;;
	esac
fi

eval "$CMD"