proxy_helper.sh

prox="http://proxy.com:8080"
alias proxyon="export http_proxy=$prox && export https_proxy=$prox"
alias proxyoff='unset http_proxy && unset https_proxy'
echo "Turning http(s) proxies on"
proxyon

# investigate function is repeated here for portability but, we
# only define it if investigate isn't already a defined function
if ! type -t investigate &> /dev/null; then
  function investigate {
    local output_prefix='' # could be something like [*]
    local output_sep=": " # could be ", " ": " etc
    for varname in $@; do
      echo -n "${output_prefix}${varname}${output_sep}"
      v='echo $'
      v="${v}$(echo $varname)"
      eval $v
    done
  }
  export -f investigate
fi

# Display the state of the proxy variables
function proxystate {
  local HTTP="off"
  local HTTPS="off"
  local SOCKS="off"
  if export | grep -q http_proxy;then
    HTTP=$http_proxy
  fi
  if export | grep -q https_proxy;then
    HTTPS=$https_proxy
  fi
  if export | grep -q socks_proxy;then
    SOCKS=$socks_proxy
  fi
  echo "[*] Current state of proxy variables"
  investigate HTTP HTTPS SOCKS
}
export -f proxystate
proxystate