get-new-vpn

#! /bin/bash
log () {
	printf "%s\n" "$@" >&2
}

vpn_list=/etc/openvpn/vpngate.vpns

update_vpn_list () {
	if [[ -s "$vpn_list" ]] && [[ -s "$vpn_list-stamp" ]]
	then
		last_update=$(( $(date +%s) - $(< "$vpn_list-stamp") ))
		log "Last update: $last_update s ago"
		(( (last_update < 86400) )) && return
	fi
	log "Updating VPN list."
	date +%s > "$vpn_list-stamp"
	getvpns > "$vpn_list"
}

declare -a country speed url

read_vpn_list () {
	i=0
	while IFS=$'\t' read 'country[i]' 'speed[i]' 'url[i]'
	do
		(( i++ ))
	done < "$vpn_list"
	unset  'country[i]' 'speed[i]' 'url[i]'
}

vpnget () {
	curl -sL "$1" |
		sed '/;http-proxy-retry/s/^;http/socks/;/;http-proxy/s/.*/socks-proxy localhost 9050/; s/\r//' > /etc/openvpn/vpngate.conf
}

get_new_vpn() {
	update_vpn_list
	read_vpn_list

	log "Attempting 1 of $i: ${country[0]}, speed: ${speed[0]}."

	vpnget "${url[0]}"
	sed -i 1d "$vpn_list"
}

get_new_vpn
while grep -qi html /etc/openvpn/vpngate.conf
do
	get_new_vpn
done