forked from AkkomaGang/akkoma
149 lines
3.8 KiB
Elixir
149 lines
3.8 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.HTTP.AdapterHelper do
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@moduledoc """
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Configure Tesla.Client with default and customized adapter options.
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"""
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@defaults [name: MyFinch, pool_timeout: 5_000, receive_timeout: 5_000]
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@type proxy_type() :: :socks4 | :socks5
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@type host() :: charlist() | :inet.ip_address()
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alias Pleroma.HTTP.AdapterHelper
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require Logger
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@type proxy ::
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{Connection.host(), pos_integer()}
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| {Connection.proxy_type(), Connection.host(), pos_integer()}
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@callback options(keyword(), URI.t()) :: keyword()
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@spec format_proxy(String.t() | tuple() | nil) :: proxy() | nil
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def format_proxy(nil), do: nil
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def format_proxy(proxy_url) do
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case parse_proxy(proxy_url) do
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{:ok, host, port} -> {:http, host, port, []}
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{:ok, type, host, port} -> {type, host, port, []}
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_ -> nil
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end
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end
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@spec maybe_add_proxy(keyword(), proxy() | nil) :: keyword()
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def maybe_add_proxy(opts, nil), do: opts
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def maybe_add_proxy(opts, proxy) do
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Keyword.put(opts, :proxy, proxy)
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end
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def maybe_add_proxy_pool(opts, nil), do: opts
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def maybe_add_proxy_pool(opts, proxy) do
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Logger.info("Using HTTP Proxy: #{inspect(proxy)}")
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opts
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|> maybe_add_pools()
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|> maybe_add_default_pool()
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|> maybe_add_conn_opts()
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|> put_in([:pools, :default, :conn_opts, :proxy], proxy)
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end
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defp maybe_add_pools(opts) do
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if Keyword.has_key?(opts, :pools) do
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opts
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else
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Keyword.put(opts, :pools, %{})
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end
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end
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defp maybe_add_default_pool(opts) do
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pools = Keyword.get(opts, :pools)
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if Map.has_key?(pools, :default) do
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opts
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else
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put_in(opts, [:pools, :default], [])
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end
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end
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defp maybe_add_conn_opts(opts) do
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conn_opts = get_in(opts, [:pools, :default, :conn_opts])
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unless is_nil(conn_opts) do
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opts
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else
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put_in(opts, [:pools, :default, :conn_opts], [])
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end
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end
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@doc """
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Merge default connection & adapter options with received ones.
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"""
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@spec options(URI.t(), keyword()) :: keyword()
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def options(%URI{} = uri, opts \\ []) do
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@defaults
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|> Keyword.merge(opts)
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|> AdapterHelper.Default.options(uri)
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end
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defp proxy_type("http"), do: {:ok, :http}
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defp proxy_type("https"), do: {:ok, :https}
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defp proxy_type(_), do: {:error, :unknown}
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@spec parse_proxy(String.t() | tuple() | nil) ::
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{:ok, host(), pos_integer()}
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| {:ok, proxy_type(), host(), pos_integer()}
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| {:error, atom()}
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| nil
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def parse_proxy(nil), do: nil
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def parse_proxy(proxy) when is_binary(proxy) do
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with %URI{} = uri <- URI.parse(proxy),
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{:ok, type} <- proxy_type(uri.scheme) do
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{:ok, type, uri.host, uri.port}
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else
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e ->
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Logger.warn("Parsing proxy failed #{inspect(proxy)}, #{inspect(e)}")
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{:error, :invalid_proxy}
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end
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end
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def parse_proxy(proxy) when is_tuple(proxy) do
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with {type, host, port} <- proxy do
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{:ok, type, host, port}
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else
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_ ->
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Logger.warn("Parsing proxy failed #{inspect(proxy)}")
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{:error, :invalid_proxy}
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end
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end
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@spec parse_host(String.t() | atom() | charlist()) :: charlist() | :inet.ip_address()
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def parse_host(host) when is_list(host), do: host
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def parse_host(host) when is_atom(host), do: to_charlist(host)
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def parse_host(host) when is_binary(host) do
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host = to_charlist(host)
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case :inet.parse_address(host) do
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{:error, :einval} -> host
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{:ok, ip} -> ip
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end
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end
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@spec format_host(String.t()) :: charlist()
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def format_host(host) do
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host_charlist = to_charlist(host)
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case :inet.parse_address(host_charlist) do
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{:error, :einval} ->
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:idna.encode(host_charlist)
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{:ok, _ip} ->
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host_charlist
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end
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end
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end
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