#!/bin/sh

if [ -z "$1" ]
then
    >&2 echo "webmime: no argument given"
    exit 2
fi

URL="$(echo "$1" | grep -i ^http)"

if [ -z "$URL" ]
then
    >&2 echo "webmime: argument is not a http url ($1)"
    exit 1
fi

>&2 echo "webmime: reading content-type from: $1"
R="$(curl --connect-timeout 5 -sI "$URL" | grep -i "^content-type:" | tr -d ' ' | awk -F'[:;]' '{ print $2 }')"

if [ -z "$R" ]
then
    >&2 echo "webmime: no content-type header found ($1)"
    exit 1
fi

echo "$R"