forked from hexpm/hexpm
/
block_address.ex
52 lines (41 loc) · 1.21 KB
/
block_address.ex
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defmodule Hexpm.BlockAddress do
@ets :blocked_addresses
def start() do
:ets.new(@ets, [:named_table, :set, :public, read_concurrency: true])
:ets.insert(@ets, {:loaded, false})
end
def try_reload() do
case :ets.lookup(@ets, :loaded) do
[{:loaded, false}] ->
reload()
_ ->
:ok
end
end
def reload() do
records =
Hexpm.BlockAddress.Entry
|> Hexpm.Repo.all()
|> Enum.into(MapSet.new(), &{:blocked, &1.ip})
records = MapSet.put(records, {:allowed, Hexpm.CDN.public_ips()})
old_records = :ets.tab2list(@ets) |> Enum.map(&elem(&1, 0))
remove = Enum.reject(old_records, &(&1 in records))
add = Enum.reject(records, &(&1 in old_records))
Enum.each(remove, &:ets.delete(@ets, &1))
:ets.insert(@ets, Enum.map(add, &{&1}))
:ets.insert(@ets, {:allowed, Hexpm.CDN.public_ips()})
:ets.insert(@ets, {:loaded, true})
end
def blocked?(ip) do
match?([{{:blocked, ^ip}}], :ets.lookup(@ets, {:blocked, ip}))
end
def allowed?(ip) do
case :ets.lookup(@ets, :allowed) do
[{:allowed, allowed}] ->
ip = Hexpm.Utils.parse_ip(ip)
Hexpm.Utils.in_ip_range?(allowed, ip)
[] ->
false
end
end
end