forked from AkkomaGang/akkoma
70 lines
1.7 KiB
Elixir
70 lines
1.7 KiB
Elixir
defmodule Pleroma.Plugs.OAuthPlug do
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import Plug.Conn
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import Ecto.Query
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alias Pleroma.{
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User,
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Repo,
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Web.OAuth.Token
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}
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@realm_reg Regex.compile!("Bearer\:?\s+(.*)$", "i")
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def init(options), do: options
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def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
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def call(conn, _) do
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with {:ok, token} <- fetch_token(conn),
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{:ok, user} <- fetch_user(token) do
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conn
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|> assign(:token, token)
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|> assign(:user, user)
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else
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_ -> conn
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end
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end
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# Gets user by token
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#
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@spec fetch_user(String.t()) :: {:ok, User.t()} | nil
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defp fetch_user(token) do
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query = from(q in Token, where: q.token == ^token, preload: [:user])
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with %Token{user: %{info: %{deactivated: false} = _} = user} <- Repo.one(query) do
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{:ok, user}
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end
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end
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# Gets token from session by :oauth_token key
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#
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@spec fetch_token_from_session(Plug.Conn.t()) :: :no_token_found | {:ok, String.t()}
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defp fetch_token_from_session(conn) do
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case get_session(conn, :oauth_token) do
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nil -> :no_token_found
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token -> {:ok, token}
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end
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end
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# Gets token from headers
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#
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@spec fetch_token(Plug.Conn.t()) :: :no_token_found | {:ok, String.t()}
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defp fetch_token(%Plug.Conn{} = conn) do
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headers = get_req_header(conn, "authorization")
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with :no_token_found <- fetch_token(headers),
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do: fetch_token_from_session(conn)
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end
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@spec fetch_token(Keyword.t()) :: :no_token_found | {:ok, String.t()}
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defp fetch_token([]), do: :no_token_found
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defp fetch_token([token | tail]) do
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trimmed_token = String.trim(token)
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case Regex.run(@realm_reg, trimmed_token) do
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[_, match] -> {:ok, String.trim(match)}
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_ -> fetch_token(tail)
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end
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end
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end
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