#!/usr/bin/env bash

usage() {
    echo "Usage: $(basename $0) OLD_PORT NEW_PORT COMMAND_LINE"
    echo
    echo "Launch COMMAND_LINE, but intercept system calls to bind"
    echo "to OLD_PORT and instead bind them to localhost:NEW_PORT"
    exit 2
}

# Parameter defaults
mydir=$(readlink -f $(dirname ${0}))

export REBIND_PORT_OLD="${1}"; shift
export REBIND_PORT_NEW="${1}"; shift

LD_PRELOAD=${mydir}/rebind.so "${@}"