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#! /usr/bin/env bash
#! /usr/bin/env sh
bits='2048'
function openssl_dhparam() {
local output
if [ -x "$(which openssl 2>/dev/null)" ]; then
output="$(set -o pipefail; openssl dhparam -C "$@" 2>/dev/null | sed '/^-----BEGIN DH PARAMETERS-----$/,/^-----END DH PARAMETERS-----$/ d;/^#/ d')" || return 1
if [ -x "`which openssl 2>/dev/null`" ]; then
output="`openssl dhparam -C "$@" 2>/dev/null`" || return 1
output="`echo "${output}" | sed '/^-----BEGIN DH PARAMETERS-----$/,/^-----END DH PARAMETERS-----$/ d;/^#/ d'`" || return 1
echo "${output}"
return 0
fi
return 1
}
function gen_dh_params_openssl() {
openssl_dhparam "${bits}" < /dev/null || return 1
return 0
}
function gen_dh_params_remote() {
local input output url
url="https://2ton.com.au/dhparam/${bits}"
input="$(curl "${url}")" || \
input="$(wget -O - -o /dev/null "${url}")" || return 1
input="`curl -sS "${url}"`" || \
input="`wget -O - -o /dev/null "${url}"`" || return 1
if output="$(echo "${input}" | openssl_dhparam)"; then
if output="`echo "${input}" | openssl_dhparam`"; then
echo "${output}"
return 0
fi
return 1
}
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