sni.conf is a configuration of dnsmasq.
If you want to use dnsmasq+sniproxy plan to against the "Girl Friend Wall",you will need /etc/dnsmasq.d/sni.conf .
I didn't wrote this code,it based on https://github.com/cokebar/gfwlist2dnsmasq !
gfwlist2dnsmasq-sni-conf.py is a tool aim to convert gfwlist into sni.conf ,just use python gfwlist2dnsmasq-sni-conf.py to start it.
It will automatically download the latest gfwlist and execute convert.
But ensure set your SNI Proxy Server IP before run the code. Edit gfwlist2dnsmasq-sni-conf.py find like this:
sni = '127.0.0.1'
Change 127.0.0.1 to your SNI Proxy Server IP.
Feel free to download the pre-generated sni.conf if you r not need updated version of gfwlist.
:)