#!/bin/bash

prog="rpcinfo"

usage ()
{
    cat >&2 <<EOF
Usage: $prog -T tcp host program [version]

A fake rpcinfo stub that succeeds for items in FAKE_RPCINFO_SERVICES,
depending on command-line options.

EOF
    exit 1
}

parse_options ()
{
    _temp=$(getopt -n "$prog" -o "T:h" -- "$@")

    [ $? != 0 ] && usage

    eval set -- "$_temp"

    while true ; do
	case "$1" in
	    -T) netid="$2"; shift 2 ;;
	    --) shift ; break ;;
	    -h|*) usage ;; # * shouldn't happen, so this is reasonable.
	esac
    done

    [ "$netid" = "tcp" ] || usage

    host="$1" ; shift
    [ "$host" = "localhost" -o "$host" = "127.0.0.1" ] || usage

    [ 1 -le $# -a $# -le 2 ] || usage

    p="$1"
    v="$2"
}

parse_options "$@"

for i in ${FAKE_RPCINFO_SERVICES} ; do
    # This is stupidly cummulative, but needs to happen after the
    # initial split of the list above.
    IFS="${IFS}:"
    set -- $i
    # $1 = program, $2 = low version, $3 = high version

    if [ "$1" = "$p" ] ; then
	if [ -n "$v" ] ; then
	    if [ "$2" -le "$v" -a "$v" -le "$3" ] ; then
		echo "program ${p} version ${v} ready and waiting"
		exit 0
	    else
		echo "rpcinfo: RPC: Program/version mismatch; low version = ${2}, high version = ${3}" >&2
		echo "program ${p} version ${v} is not available"
		exit 1
	    fi
	else
	    for j in $(seq $2 $3) ; do
		echo "program ${p} version ${j} ready and waiting"
	    done
	    exit 0
	fi
    fi
done

echo "rpcinfo: RPC: Program not registered" >&2
if [ -n "$v" ] ; then
    echo "program ${p} version ${v} is not available"
else
    echo "program ${p} is not available"
fi

exit 1