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Simplify AuthenticationPlug
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lain
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commit
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@ -9,71 +9,32 @@ defmodule Pleroma.Plugs.AuthenticationPlug do
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def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
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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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false <- !!user.info["deactivated"],
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saved_user_id <- get_session(conn, :user_id),
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legacy_password <- String.starts_with?(user.password_hash, "$6$"),
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update_legacy_password <-
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!(Map.has_key?(opts, :update_legacy_password) && opts[:update_legacy_password] == false),
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{:ok, verified_user} <- verify(user, password, saved_user_id) do
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if legacy_password and update_legacy_password do
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User.reset_password(verified_user, %{
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:password => password,
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:password_confirmation => password
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})
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end
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def call(
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%{
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assigns: %{
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auth_user: %{password_hash: password_hash} = auth_user,
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auth_credentials: %{password: password}
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}
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} = conn,
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_
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) do
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if Pbkdf2.checkpw(password, password_hash) do
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conn
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|> assign(:user, verified_user)
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|> put_session(:user_id, verified_user.id)
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|> assign(:user, auth_user)
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else
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_ -> conn |> halt_or_continue(opts)
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conn
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end
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end
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# Short-circuit if we have a cookie with the id for the given user.
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defp verify(%{id: id} = user, _password, id) do
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{:ok, user}
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end
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defp verify(nil, _password, _user_id) do
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def call(
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%{
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assigns: %{
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auth_credentials: %{password: password}
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}
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} = conn,
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_
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) do
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Pbkdf2.dummy_checkpw()
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:error
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end
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defp verify(user, password, _user_id) do
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valid =
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if String.starts_with?(user.password_hash, "$6$") do
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:crypt.crypt(password, user.password_hash) == user.password_hash
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else
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Pbkdf2.checkpw(password, user.password_hash)
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end
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if valid 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, ":", parts: 2) 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, Jason.encode!(%{error: "Invalid credentials."}))
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|> halt
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end
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end
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@ -4,224 +4,50 @@ defmodule Pleroma.Plugs.AuthenticationPlugTest do
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alias Pleroma.Plugs.AuthenticationPlug
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alias Pleroma.User
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defp fetch_nil(_name) do
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{:ok, nil}
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setup %{conn: conn} do
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user = %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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conn =
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conn
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|> assign(:auth_user, user)
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%{user: user, conn: conn}
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end
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@user %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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test "it does nothing if a user is assigned", %{conn: conn} do
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conn =
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conn
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|> assign(:user, %User{})
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@deactivated %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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info: %{"deactivated" => true}
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}
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ret_conn =
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conn
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|> AuthenticationPlug.call(%{})
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@legacy %User{
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id: 1,
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name: "dude",
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password_hash:
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"$6$9psBWV8gxkGOZWBz$PmfCycChoxeJ3GgGzwvhlgacb9mUoZ.KUXNCssekER4SJ7bOK53uXrHNb2e4i8yPFgSKyzaW9CcmrDXWIEMtD1"
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}
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@session_opts [
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store: :cookie,
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key: "_test",
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signing_salt: "cooldude"
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]
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defp fetch_user(_name) do
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{:ok, @user}
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assert ret_conn == conn
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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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test "with a correct password in the credentials, it assigns the auth_user", %{conn: conn} do
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conn =
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conn
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|> assign(:auth_credentials, %{password: "guy"})
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|> AuthenticationPlug.call(%{})
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assert conn.assigns.user == conn.assigns.auth_user
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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 =
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build_conn()
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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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|> AuthenticationPlug.call(%{})
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test "with a wrong password in the credentials, it does nothing", %{conn: conn} do
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conn =
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conn
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|> assign(:auth_credentials, %{password: "wrong"})
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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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ret_conn =
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conn
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|> AuthenticationPlug.call(%{})
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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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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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|> 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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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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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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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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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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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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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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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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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", %{conn: conn} 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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conn
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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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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 get_session(conn, :user_id) == @user.id
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assert conn.halted == false
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end
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test "it assigns legacy user", %{conn: conn} do
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opts = %{
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optional: true,
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fetcher: fn _ -> {:ok, @legacy} end,
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update_legacy_password: false
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}
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header = basic_auth_enc("dude", "password")
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conn =
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conn
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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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|> put_req_header("authorization", header)
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|> AuthenticationPlug.call(opts)
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assert %{user: @legacy} == conn.assigns
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assert get_session(conn, :user_id) == @legacy.id
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assert conn.halted == false
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end
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end
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describe "with a correct authorization header for an deactiviated user" do
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test "it halts the appication", %{conn: conn} do
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opts = %{
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optional: false,
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fetcher: fn _ -> @deactivated end
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}
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header = basic_auth_enc("dude", "guy")
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conn =
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conn
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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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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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end
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describe "with a user_id in the session for an existing user" do
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test "it assigns the user", %{conn: conn} 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", "THIS IS WRONG")
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conn =
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conn
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|> Plug.Session.call(Plug.Session.init(@session_opts))
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|> fetch_session
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|> put_session(:user_id, @user.id)
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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 get_session(conn, :user_id) == @user.id
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assert conn.halted == false
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end
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end
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describe "with an assigned user" do
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test "it does nothing, returning the incoming conn", %{conn: conn} do
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conn =
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conn
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|> assign(:user, @user)
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conn_result = AuthenticationPlug.call(conn, %{})
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assert conn == conn_result
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end
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assert conn == ret_conn
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end
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end
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