parent
a93f3421a7
commit
e32dbfc9a5
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defmodule Pleroma.Plugs.AuthenticationPlug do
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import Plug.Conn
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def init(options) do
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options
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end
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def call(conn, opts) do
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with {:ok, username, password} <- decode_header(conn),
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{:ok, user} <- opts[:fetcher].(username),
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{:ok, verified_user} <- verify(user, password)
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do
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conn |> assign(:user, verified_user)
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else
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_ -> conn |> halt_or_continue(opts)
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end
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end
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defp verify(nil, _password) do
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Comeonin.Pbkdf2.dummy_checkpw
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:error
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end
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defp verify(user, password) do
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if Comeonin.Pbkdf2.checkpw(password, user[:password_hash]) do
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{:ok, user}
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else
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:error
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end
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end
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defp decode_header(conn) do
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with ["Basic " <> header] <- get_req_header(conn, "authorization"),
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{:ok, userinfo} <- Base.decode64(header),
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[username, password] <- String.split(userinfo, ":")
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do
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{ :ok, username, password }
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end
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end
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defp halt_or_continue(conn, %{optional: true}) do
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conn |> assign(:user, nil)
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end
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defp halt_or_continue(conn, _) do
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conn
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|> put_resp_content_type("application/json")
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|> send_resp(403, Poison.encode!(%{error: "Invalid credentials."}))
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|> halt
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end
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end
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defmodule Pleroma.Plugs.AuthenticationPlugTest do
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use Pleroma.Web.ConnCase, async: true
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alias Pleroma.Plugs.AuthenticationPlug
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defp fetch_nil(_name) do
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{:ok, nil}
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end
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@user %{
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id: 1,
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name: "dude",
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password_hash: Comeonin.Pbkdf2.hashpwsalt("guy")
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}
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defp fetch_user(_name) do
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{:ok, @user}
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end
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defp basic_auth_enc(username, password) do
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"Basic " <> Base.encode64("#{username}:#{password}")
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end
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describe "without an authorization header" do
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test "it halts the application" do
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conn = build_conn() |> AuthenticationPlug.call(%{})
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assert conn.status == 403
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assert conn.halted == true
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end
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test "it assigns a nil user if the 'optional' option is used" do
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conn = build_conn() |> AuthenticationPlug.call(%{optional: true})
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assert %{ user: nil } == conn.assigns
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end
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end
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describe "with an authorization header for a nonexisting user" do
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test "it halts the application" do
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conn =
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build_conn()
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|> AuthenticationPlug.call(%{fetcher: &fetch_nil/1})
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assert conn.status == 403
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assert conn.halted == true
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end
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test "it assigns a nil user if the 'optional' option is used" do
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conn =
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build_conn()
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|> AuthenticationPlug.call(%{optional: true, fetcher: &fetch_nil/1 })
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assert %{ user: nil } == conn.assigns
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end
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end
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describe "with an incorrect authorization header for a enxisting user" do
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test "it halts the application" do
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opts = %{
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fetcher: &fetch_user/1
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}
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header = basic_auth_enc("dude", "man")
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conn =
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build_conn()
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|> put_req_header("authorization", header)
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|> AuthenticationPlug.call(opts)
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assert conn.status == 403
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assert conn.halted == true
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end
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test "it assigns a nil user if the 'optional' option is used" do
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opts = %{
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optional: true,
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fetcher: &fetch_user/1
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}
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header = basic_auth_enc("dude", "man")
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conn =
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build_conn()
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|> put_req_header("authorization", header)
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|> AuthenticationPlug.call(opts)
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assert %{ user: nil } == conn.assigns
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end
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end
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describe "with a correct authorization header for an existing user" do
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test "it assigns the user" do
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opts = %{
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optional: true,
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fetcher: &fetch_user/1
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}
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header = basic_auth_enc("dude", "guy")
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conn =
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build_conn()
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|> put_req_header("authorization", header)
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|> AuthenticationPlug.call(opts)
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assert %{ user: @user } == conn.assigns
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assert conn.halted == false
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end
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end
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end
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