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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.HTTP do
   6   @moduledoc """
   7
   8   """
   9
  10   alias Pleroma.HTTP.Connection
  11   alias Pleroma.HTTP.RequestBuilder, as: Builder
  12
  13   @type t :: __MODULE__
  14
  15   @doc """
  16   Builds and perform http request.
  17
  18   # Arguments:
  19   `method` - :get, :post, :put, :delete
  20   `url`
  21   `body`
  22   `headers` - a keyworld list of headers, e.g. `[{"content-type", "text/plain"}]`
  23   `options` - custom, per-request middleware or adapter options
  24
  25   # Returns:
  26   `{:ok, %Tesla.Env{}}` or `{:error, error}`
  27
  28   """
  29   def request(method, url, body \\ "", headers \\ [], options \\ []) do
  30     try do
  31       options =
  32         process_request_options(options)
  33         |> process_sni_options(url)
  34
  35       params = Keyword.get(options, :params, [])
  36
  37       %{}
  38       |> Builder.method(method)
  39       |> Builder.headers(headers)
  40       |> Builder.opts(options)
  41       |> Builder.url(url)
  42       |> Builder.add_param(:body, :body, body)
  43       |> Builder.add_param(:query, :query, params)
  44       |> Enum.into([])
  45       |> (&Tesla.request(Connection.new(options), &1)).()
  46     rescue
  47       e ->
  48         {:error, e}
  49     catch
  50       :exit, e ->
  51         {:error, e}
  52     end
  53   end
  54
  55   defp process_sni_options(options, nil), do: options
  56
  57   defp process_sni_options(options, url) do
  58     uri = URI.parse(url)
  59     host = uri.host |> to_charlist()
  60
  61     case uri.scheme do
  62       "https" -> options ++ [ssl: [server_name_indication: host]]
  63       _ -> options
  64     end
  65   end
  66
  67   def process_request_options(options) do
  68     Keyword.merge(Pleroma.HTTP.Connection.hackney_options([]), options)
  69   end
  70
  71   @doc """
  72   Performs GET request.
  73
  74   See `Pleroma.HTTP.request/5`
  75   """
  76   def get(url, headers \\ [], options \\ []),
  77     do: request(:get, url, "", headers, options)
  78
  79   @doc """
  80   Performs POST request.
  81
  82   See `Pleroma.HTTP.request/5`
  83   """
  84   def post(url, body, headers \\ [], options \\ []),
  85     do: request(:post, url, body, headers, options)
  86 end