Merge branch 'moonman/pleroma-sha512-crypt' into 'develop'

auth overhaul and legacy GS auth

See merge request pleroma/pleroma!331

lib/pleroma/plugs/authentication_plug.ex

@@ -9,54 +9,34 @@ def init(options) do
 
   def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
 
-  def call(conn, opts) do
-    with {:ok, username, password} <- decode_header(conn),
-         {:ok, user} <- opts[:fetcher].(username),
-         false <- !!user.info["deactivated"],
-         saved_user_id <- get_session(conn, :user_id),
-         {:ok, verified_user} <- verify(user, password, saved_user_id) do
+  def call(
+        %{
+          assigns: %{
+            auth_user: %{password_hash: password_hash} = auth_user,
+            auth_credentials: %{password: password}
+          }
+        } = conn,
+        _
+      ) do
+    if Pbkdf2.checkpw(password, password_hash) do
       conn
-      |> assign(:user, verified_user)
-      |> put_session(:user_id, verified_user.id)
+      |> assign(:user, auth_user)
     else
-      _ -> conn |> halt_or_continue(opts)
+      conn
     end
   end
 
-  # Short-circuit if we have a cookie with the id for the given user.
-  defp verify(%{id: id} = user, _password, id) do
-    {:ok, user}
-  end
-
-  defp verify(nil, _password, _user_id) do
+  def call(
+        %{
+          assigns: %{
+            auth_credentials: %{password: password}
+          }
+        } = conn,
+        _
+      ) do
     Pbkdf2.dummy_checkpw()
-    :error
-  end
-
-  defp verify(user, password, _user_id) do
-    if Pbkdf2.checkpw(password, user.password_hash) do
-      {:ok, user}
-    else
-      :error
-    end
-  end
-
-  defp decode_header(conn) do
-    with ["Basic " <> header] <- get_req_header(conn, "authorization"),
-         {:ok, userinfo} <- Base.decode64(header),
-         [username, password] <- String.split(userinfo, ":", parts: 2) do
-      {:ok, username, password}
-    end
-  end
-
-  defp halt_or_continue(conn, %{optional: true}) do
-    conn |> assign(:user, nil)
-  end
-
-  defp halt_or_continue(conn, _) do
     conn
-    |> put_resp_content_type("application/json")
-    |> send_resp(403, Jason.encode!(%{error: "Invalid credentials."}))
-    |> halt
   end
+
+  def call(conn, _), do: conn
 end

lib/pleroma/plugs/basic_auth_decoder_plug.ex

@@ -0,0 +1,21 @@
+defmodule Pleroma.Plugs.BasicAuthDecoderPlug do
+  import Plug.Conn
+
+  def init(options) do
+    options
+  end
+
+  def call(conn, opts) do
+    with ["Basic " <> header] <- get_req_header(conn, "authorization"),
+         {:ok, userinfo} <- Base.decode64(header),
+         [username, password] <- String.split(userinfo, ":", parts: 2) do
+      conn
+      |> assign(:auth_credentials, %{
+        username: username,
+        password: password
+      })
+    else
+      _ -> conn
+    end
+  end
+end

lib/pleroma/plugs/ensure_authenticated_plug.ex

@@ -0,0 +1,19 @@
+defmodule Pleroma.Plugs.EnsureAuthenticatedPlug do
+  import Plug.Conn
+  alias Pleroma.User
+
+  def init(options) do
+    options
+  end
+
+  def call(%{assigns: %{user: %User{}}} = conn, _) do
+    conn
+  end
+
+  def call(conn, _) do
+    conn
+    |> put_resp_content_type("application/json")
+    |> send_resp(403, Jason.encode!(%{error: "Invalid credentials."}))
+    |> halt
+  end
+end

lib/pleroma/plugs/ensure_user_key_plug.ex

@@ -0,0 +1,14 @@
+defmodule Pleroma.Plugs.EnsureUserKeyPlug do
+  import Plug.Conn
+
+  def init(opts) do
+    opts
+  end
+
+  def call(%{assigns: %{user: _}} = conn, _), do: conn
+
+  def call(conn, _) do
+    conn
+    |> assign(:user, nil)
+  end
+end

lib/pleroma/plugs/legacy_authentication_plug.ex

@@ -0,0 +1,35 @@
+defmodule Pleroma.Plugs.LegacyAuthenticationPlug do
+  import Plug.Conn
+  alias Pleroma.User
+
+  def init(options) do
+    options
+  end
+
+  def call(%{assigns: %{user: %User{}}} = conn, _), do: conn
+
+  def call(
+        %{
+          assigns: %{
+            auth_user: %{password_hash: "$6$" <> _ = password_hash} = auth_user,
+            auth_credentials: %{password: password}
+          }
+        } = conn,
+        _
+      ) do
+    with ^password_hash <- :crypt.crypt(password, password_hash),
+         {:ok, user} <-
+           User.reset_password(auth_user, %{password: password, password_confirmation: password}) do
+      conn
+      |> assign(:auth_user, user)
+      |> assign(:user, user)
+    else
+      _ ->
+        conn
+    end
+  end
+
+  def call(conn, _) do
+    conn
+  end
+end

lib/pleroma/plugs/session_authentication_plug.ex

@@ -0,0 +1,18 @@
+defmodule Pleroma.Plugs.SessionAuthenticationPlug do
+  import Plug.Conn
+  alias Pleroma.User
+
+  def init(options) do
+    options
+  end
+
+  def call(conn, _) do
+    with saved_user_id <- get_session(conn, :user_id),
+         %{auth_user: %{id: ^saved_user_id}} <- conn.assigns do
+      conn
+      |> assign(:user, conn.assigns.auth_user)
+    else
+      _ -> conn
+    end
+  end
+end

lib/pleroma/plugs/set_user_session_id_plug.ex

@@ -0,0 +1,15 @@
+defmodule Pleroma.Plugs.SetUserSessionIdPlug do
+  import Plug.Conn
+  alias Pleroma.User
+
+  def init(opts) do
+    opts
+  end
+
+  def call(%{assigns: %{user: %User{id: id}}} = conn, _) do
+    conn
+    |> put_session(:user_id, id)
+  end
+
+  def call(conn, _), do: conn
+end

lib/pleroma/plugs/user_enabled_plug.ex

@@ -0,0 +1,17 @@
+defmodule Pleroma.Plugs.UserEnabledPlug do
+  import Plug.Conn
+  alias Pleroma.User
+
+  def init(options) do
+    options
+  end
+
+  def call(%{assigns: %{user: %User{info: %{"deactivated" => true}}}} = conn, _) do
+    conn
+    |> assign(:user, nil)
+  end
+
+  def call(conn, _) do
+    conn
+  end
+end

lib/pleroma/plugs/user_fetcher_plug.ex

@@ -0,0 +1,34 @@
+defmodule Pleroma.Plugs.UserFetcherPlug do
+  import Plug.Conn
+  alias Pleroma.Repo
+  alias Pleroma.User
+
+  def init(options) do
+    options
+  end
+
+  def call(conn, options) do
+    with %{auth_credentials: %{username: username}} <- conn.assigns,
+         {:ok, %User{} = user} <- user_fetcher(username) do
+      conn
+      |> assign(:auth_user, user)
+    else
+      _ -> conn
+    end
+  end
+
+  defp user_fetcher(username_or_email) do
+    {
+      :ok,
+      cond do
+        # First, try logging in as if it was a name
+        user = Repo.get_by(User, %{nickname: username_or_email}) ->
+          user
+
+        # If we get nil, we try using it as an email
+        user = Repo.get_by(User, %{email: username_or_email}) ->
+          user
+      end
+    }
+  end
+end

lib/pleroma/web/router.ex

@@ -9,47 +9,57 @@ defmodule Pleroma.Web.Router do
   @public Keyword.get(@instance, :public)
   @registrations_open Keyword.get(@instance, :registrations_open)
 
-  def user_fetcher(username_or_email) do
-    {
-      :ok,
-      cond do
-        # First, try logging in as if it was a name
-        user = Repo.get_by(User, %{nickname: username_or_email}) ->
-          user
-
-        # If we get nil, we try using it as an email
-        user = Repo.get_by(User, %{email: username_or_email}) ->
-          user
-      end
-    }
-  end
-
   pipeline :api do
     plug(:accepts, ["json"])
     plug(:fetch_session)
     plug(Pleroma.Plugs.OAuthPlug)
-    plug(Pleroma.Plugs.AuthenticationPlug, %{fetcher: &Router.user_fetcher/1, optional: true})
+    plug(Pleroma.Plugs.BasicAuthDecoderPlug)
+    plug(Pleroma.Plugs.UserFetcherPlug)
+    plug(Pleroma.Plugs.SessionAuthenticationPlug)
+    plug(Pleroma.Plugs.LegacyAuthenticationPlug)
+    plug(Pleroma.Plugs.AuthenticationPlug)
+    plug(Pleroma.Plugs.UserEnabledPlug)
+    plug(Pleroma.Plugs.SetUserSessionIdPlug)
+    plug(Pleroma.Plugs.EnsureUserKeyPlug)
   end
 
   pipeline :authenticated_api do
     plug(:accepts, ["json"])
     plug(:fetch_session)
     plug(Pleroma.Plugs.OAuthPlug)
-    plug(Pleroma.Plugs.AuthenticationPlug, %{fetcher: &Router.user_fetcher/1})
+    plug(Pleroma.Plugs.BasicAuthDecoderPlug)
+    plug(Pleroma.Plugs.UserFetcherPlug)
+    plug(Pleroma.Plugs.SessionAuthenticationPlug)
+    plug(Pleroma.Plugs.LegacyAuthenticationPlug)
+    plug(Pleroma.Plugs.AuthenticationPlug)
+    plug(Pleroma.Plugs.UserEnabledPlug)
+    plug(Pleroma.Plugs.SetUserSessionIdPlug)
+    plug(Pleroma.Plugs.EnsureAuthenticatedPlug)
   end
 
   pipeline :mastodon_html do
     plug(:accepts, ["html"])
     plug(:fetch_session)
     plug(Pleroma.Plugs.OAuthPlug)
-    plug(Pleroma.Plugs.AuthenticationPlug, %{fetcher: &Router.user_fetcher/1, optional: true})
+    plug(Pleroma.Plugs.BasicAuthDecoderPlug)
+    plug(Pleroma.Plugs.UserFetcherPlug)
+    plug(Pleroma.Plugs.SessionAuthenticationPlug)
+    plug(Pleroma.Plugs.LegacyAuthenticationPlug)
+    plug(Pleroma.Plugs.AuthenticationPlug)
+    plug(Pleroma.Plugs.UserEnabledPlug)
+    plug(Pleroma.Plugs.SetUserSessionIdPlug)
+    plug(Pleroma.Plugs.EnsureUserKeyPlug)
   end
 
   pipeline :pleroma_html do
     plug(:accepts, ["html"])
     plug(:fetch_session)
     plug(Pleroma.Plugs.OAuthPlug)
-    plug(Pleroma.Plugs.AuthenticationPlug, %{fetcher: &Router.user_fetcher/1, optional: true})
+    plug(Pleroma.Plugs.BasicAuthDecoderPlug)
+    plug(Pleroma.Plugs.UserFetcherPlug)
+    plug(Pleroma.Plugs.SessionAuthenticationPlug)
+    plug(Pleroma.Plugs.AuthenticationPlug)
+    plug(Pleroma.Plugs.EnsureUserKeyPlug)
   end
 
   pipeline :well_known do

mix.exs

@@ -50,7 +50,9 @@ defp deps do
       {:ex_aws_s3, "~> 2.0"},
       {:ex_machina, "~> 2.2", only: :test},
       {:credo, "~> 0.9.3", only: [:dev, :test]},
-      {:mock, "~> 0.3.1", only: :test}
+      {:mock, "~> 0.3.1", only: :test},
+      {:crypt,
+       git: "https://github.com/msantos/crypt", ref: "1f2b58927ab57e72910191a7ebaeff984382a1d3"}
     ]
   end
 

mix.lock

@@ -8,6 +8,7 @@
   "cowboy": {:hex, :cowboy, "1.1.2", "61ac29ea970389a88eca5a65601460162d370a70018afe6f949a29dca91f3bb0", [:rebar3], [{:cowlib, "~> 1.0.2", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "~> 1.3.2", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm"},
   "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [:make], [], "hexpm"},
   "credo": {:hex, :credo, "0.9.3", "76fa3e9e497ab282e0cf64b98a624aa11da702854c52c82db1bf24e54ab7c97a", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:poison, ">= 0.0.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
+  "crypt": {:git, "https://github.com/msantos/crypt", "1f2b58927ab57e72910191a7ebaeff984382a1d3", [ref: "1f2b58927ab57e72910191a7ebaeff984382a1d3"]},
   "db_connection": {:hex, :db_connection, "1.1.3", "89b30ca1ef0a3b469b1c779579590688561d586694a3ce8792985d4d7e575a61", [:mix], [{:connection, "~> 1.0.2", [hex: :connection, repo: "hexpm", optional: false]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},
   "decimal": {:hex, :decimal, "1.5.0", "b0433a36d0e2430e3d50291b1c65f53c37d56f83665b43d79963684865beab68", [:mix], [], "hexpm"},
   "ecto": {:hex, :ecto, "2.2.10", "e7366dc82f48f8dd78fcbf3ab50985ceeb11cb3dc93435147c6e13f2cda0992e", [:mix], [{:db_connection, "~> 1.1", [hex: :db_connection, repo: "hexpm", optional: true]}, {:decimal, "~> 1.2", [hex: :decimal, repo: "hexpm", optional: false]}, {:mariaex, "~> 0.8.0", [hex: :mariaex, repo: "hexpm", optional: true]}, {:poison, "~> 2.2 or ~> 3.0", [hex: :poison, repo: "hexpm", optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.13.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},

test/plugs/authentication_plug_test.exs

@@ -4,196 +4,50 @@ defmodule Pleroma.Plugs.AuthenticationPlugTest do
   alias Pleroma.Plugs.AuthenticationPlug
   alias Pleroma.User
 
-  defp fetch_nil(_name) do
-    {:ok, nil}
-  end
-
-  @user %User{
+  setup %{conn: conn} do
+    user = %User{
       id: 1,
       name: "dude",
       password_hash: Comeonin.Pbkdf2.hashpwsalt("guy")
     }
 
-  @deactivated %User{
-    id: 1,
-    name: "dude",
-    password_hash: Comeonin.Pbkdf2.hashpwsalt("guy"),
-    info: %{"deactivated" => true}
-  }
-
-  @session_opts [
-    store: :cookie,
-    key: "_test",
-    signing_salt: "cooldude"
-  ]
-
-  defp fetch_user(_name) do
-    {:ok, @user}
-  end
-
-  defp basic_auth_enc(username, password) do
-    "Basic " <> Base.encode64("#{username}:#{password}")
-  end
-
-  describe "without an authorization header" do
-    test "it halts the application" do
     conn =
-        build_conn()
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
+      conn
+      |> assign(:auth_user, user)
+
+    %{user: user, conn: conn}
+  end
+
+  test "it does nothing if a user is assigned", %{conn: conn} do
+    conn =
+      conn
+      |> assign(:user, %User{})
+
+    ret_conn =
+      conn
       |> AuthenticationPlug.call(%{})
 
-      assert conn.status == 403
-      assert conn.halted == true
+    assert ret_conn == conn
   end
 
-    test "it assigns a nil user if the 'optional' option is used" do
-      conn =
-        build_conn()
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
-        |> AuthenticationPlug.call(%{optional: true})
-
-      assert %{user: nil} == conn.assigns
-    end
-  end
-
-  describe "with an authorization header for a nonexisting user" do
-    test "it halts the application" do
-      conn =
-        build_conn()
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
-        |> AuthenticationPlug.call(%{fetcher: &fetch_nil/1})
-
-      assert conn.status == 403
-      assert conn.halted == true
-    end
-
-    test "it assigns a nil user if the 'optional' option is used" do
-      conn =
-        build_conn()
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
-        |> AuthenticationPlug.call(%{optional: true, fetcher: &fetch_nil/1})
-
-      assert %{user: nil} == conn.assigns
-    end
-  end
-
-  describe "with an incorrect authorization header for a enxisting user" do
-    test "it halts the application" do
-      opts = %{
-        fetcher: &fetch_user/1
-      }
-
-      header = basic_auth_enc("dude", "man")
-
-      conn =
-        build_conn()
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
-        |> put_req_header("authorization", header)
-        |> AuthenticationPlug.call(opts)
-
-      assert conn.status == 403
-      assert conn.halted == true
-    end
-
-    test "it assigns a nil user if the 'optional' option is used" do
-      opts = %{
-        optional: true,
-        fetcher: &fetch_user/1
-      }
-
-      header = basic_auth_enc("dude", "man")
-
-      conn =
-        build_conn()
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
-        |> put_req_header("authorization", header)
-        |> AuthenticationPlug.call(opts)
-
-      assert %{user: nil} == conn.assigns
-    end
-  end
-
-  describe "with a correct authorization header for an existing user" do
-    test "it assigns the user", %{conn: conn} do
-      opts = %{
-        optional: true,
-        fetcher: &fetch_user/1
-      }
-
-      header = basic_auth_enc("dude", "guy")
-
+  test "with a correct password in the credentials, it assigns the auth_user", %{conn: conn} do
     conn =
       conn
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
-        |> put_req_header("authorization", header)
-        |> AuthenticationPlug.call(opts)
+      |> assign(:auth_credentials, %{password: "guy"})
+      |> AuthenticationPlug.call(%{})
 
-      assert %{user: @user} == conn.assigns
-      assert get_session(conn, :user_id) == @user.id
-      assert conn.halted == false
-    end
+    assert conn.assigns.user == conn.assigns.auth_user
   end
 
-  describe "with a correct authorization header for an deactiviated user" do
-    test "it halts the appication", %{conn: conn} do
-      opts = %{
-        optional: false,
-        fetcher: fn _ -> @deactivated end
-      }
-
-      header = basic_auth_enc("dude", "guy")
-
+  test "with a wrong password in the credentials, it does nothing", %{conn: conn} do
     conn =
       conn
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
-        |> put_req_header("authorization", header)
-        |> AuthenticationPlug.call(opts)
+      |> assign(:auth_credentials, %{password: "wrong"})
 
-      assert conn.status == 403
-      assert conn.halted == true
-    end
-  end
-
-  describe "with a user_id in the session for an existing user" do
-    test "it assigns the user", %{conn: conn} do
-      opts = %{
-        optional: true,
-        fetcher: &fetch_user/1
-      }
-
-      header = basic_auth_enc("dude", "THIS IS WRONG")
-
-      conn =
+    ret_conn =
       conn
-        |> Plug.Session.call(Plug.Session.init(@session_opts))
-        |> fetch_session
-        |> put_session(:user_id, @user.id)
-        |> put_req_header("authorization", header)
-        |> AuthenticationPlug.call(opts)
+      |> AuthenticationPlug.call(%{})
 
-      assert %{user: @user} == conn.assigns
-      assert get_session(conn, :user_id) == @user.id
-      assert conn.halted == false
-    end
-  end
-
-  describe "with an assigned user" do
-    test "it does nothing, returning the incoming conn", %{conn: conn} do
-      conn =
-        conn
-        |> assign(:user, @user)
-
-      conn_result = AuthenticationPlug.call(conn, %{})
-
-      assert conn == conn_result
-    end
+    assert conn == ret_conn
   end
 end

test/plugs/basic_auth_decoder_plug_test.exs

@@ -0,0 +1,31 @@
+defmodule Pleroma.Plugs.BasicAuthDecoderPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Plugs.BasicAuthDecoderPlug
+
+  defp basic_auth_enc(username, password) do
+    "Basic " <> Base.encode64("#{username}:#{password}")
+  end
+
+  test "it puts the decoded credentials into the assigns", %{conn: conn} do
+    header = basic_auth_enc("moonman", "iloverobek")
+
+    conn =
+      conn
+      |> put_req_header("authorization", header)
+      |> BasicAuthDecoderPlug.call(%{})
+
+    assert conn.assigns[:auth_credentials] == %{
+             username: "moonman",
+             password: "iloverobek"
+           }
+  end
+
+  test "without a authorization header it doesn't do anything", %{conn: conn} do
+    ret_conn =
+      conn
+      |> BasicAuthDecoderPlug.call(%{})
+
+    assert conn == ret_conn
+  end
+end

test/plugs/ensure_authenticated_plug_test.exs

@@ -0,0 +1,27 @@
+defmodule Pleroma.Plugs.EnsureAuthenticatedPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Plugs.EnsureAuthenticatedPlug
+  alias Pleroma.User
+
+  test "it halts if no user is assigned", %{conn: conn} do
+    conn =
+      conn
+      |> EnsureAuthenticatedPlug.call(%{})
+
+    assert conn.status == 403
+    assert conn.halted == true
+  end
+
+  test "it continues if a user is assigned", %{conn: conn} do
+    conn =
+      conn
+      |> assign(:user, %User{})
+
+    ret_conn =
+      conn
+      |> EnsureAuthenticatedPlug.call(%{})
+
+    assert ret_conn == conn
+  end
+end

test/plugs/ensure_user_key_plug_test.exs

@@ -0,0 +1,25 @@
+defmodule Pleroma.Plugs.EnsureUserKeyPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Plugs.EnsureUserKeyPlug
+
+  test "if the conn has a user key set, it does nothing", %{conn: conn} do
+    conn =
+      conn
+      |> assign(:user, 1)
+
+    ret_conn =
+      conn
+      |> EnsureUserKeyPlug.call(%{})
+
+    assert conn == ret_conn
+  end
+
+  test "if the conn has no key set, it sets it to nil", %{conn: conn} do
+    conn =
+      conn
+      |> EnsureUserKeyPlug.call(%{})
+
+    assert Map.has_key?(conn.assigns, :user)
+  end
+end

test/plugs/legacy_authentication_plug_test.exs

@@ -0,0 +1,82 @@
+defmodule Pleroma.Plugs.LegacyAuthenticationPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Plugs.LegacyAuthenticationPlug
+  alias Pleroma.User
+
+  import Mock
+
+  setup do
+    # password is "password"
+    user = %User{
+      id: 1,
+      name: "dude",
+      password_hash:
+        "$6$9psBWV8gxkGOZWBz$PmfCycChoxeJ3GgGzwvhlgacb9mUoZ.KUXNCssekER4SJ7bOK53uXrHNb2e4i8yPFgSKyzaW9CcmrDXWIEMtD1"
+    }
+
+    %{user: user}
+  end
+
+  test "it does nothing if a user is assigned", %{conn: conn, user: user} do
+    conn =
+      conn
+      |> assign(:auth_credentials, %{username: "dude", password: "password"})
+      |> assign(:auth_user, user)
+      |> assign(:user, %User{})
+
+    ret_conn =
+      conn
+      |> LegacyAuthenticationPlug.call(%{})
+
+    assert ret_conn == conn
+  end
+
+  test "it authenticates the auth_user if present and password is correct and resets the password",
+       %{
+         conn: conn,
+         user: user
+       } do
+    conn =
+      conn
+      |> assign(:auth_credentials, %{username: "dude", password: "password"})
+      |> assign(:auth_user, user)
+
+    conn =
+      with_mock User,
+        reset_password: fn user, %{password: password, password_confirmation: password} ->
+          send(self(), :reset_password)
+          {:ok, user}
+        end do
+        conn
+        |> LegacyAuthenticationPlug.call(%{})
+      end
+
+    assert_received :reset_password
+    assert conn.assigns.user == user
+  end
+
+  test "it does nothing if the password is wrong", %{
+    conn: conn,
+    user: user
+  } do
+    conn =
+      conn
+      |> assign(:auth_credentials, %{username: "dude", password: "wrong_password"})
+      |> assign(:auth_user, user)
+
+    ret_conn =
+      conn
+      |> LegacyAuthenticationPlug.call(%{})
+
+    assert conn == ret_conn
+  end
+
+  test "with no credentials or user it does nothing", %{conn: conn} do
+    ret_conn =
+      conn
+      |> LegacyAuthenticationPlug.call(%{})
+
+    assert ret_conn == conn
+  end
+end

test/plugs/session_authentication_plug_test.exs

@@ -0,0 +1,59 @@
+defmodule Pleroma.Plugs.SessionAuthenticationPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Plugs.SessionAuthenticationPlug
+  alias Pleroma.User
+
+  setup %{conn: conn} do
+    session_opts = [
+      store: :cookie,
+      key: "_test",
+      signing_salt: "cooldude"
+    ]
+
+    conn =
+      conn
+      |> Plug.Session.call(Plug.Session.init(session_opts))
+      |> fetch_session
+      |> assign(:auth_user, %User{id: 1})
+
+    %{conn: conn}
+  end
+
+  test "it does nothing if a user is assigned", %{conn: conn} do
+    conn =
+      conn
+      |> assign(:user, %User{})
+
+    ret_conn =
+      conn
+      |> SessionAuthenticationPlug.call(%{})
+
+    assert ret_conn == conn
+  end
+
+  test "if the auth_user has the same id as the user_id in the session, it assigns the user", %{
+    conn: conn
+  } do
+    conn =
+      conn
+      |> put_session(:user_id, conn.assigns.auth_user.id)
+      |> SessionAuthenticationPlug.call(%{})
+
+    assert conn.assigns.user == conn.assigns.auth_user
+  end
+
+  test "if the auth_user has a different id as the user_id in the session, it does nothing", %{
+    conn: conn
+  } do
+    conn =
+      conn
+      |> put_session(:user_id, -1)
+
+    ret_conn =
+      conn
+      |> SessionAuthenticationPlug.call(%{})
+
+    assert ret_conn == conn
+  end
+end

test/plugs/set_user_session_id_plug_test.exs

@@ -0,0 +1,39 @@
+defmodule Pleroma.Plugs.SetUserSessionIdPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Plugs.SetUserSessionIdPlug
+  alias Pleroma.User
+
+  setup %{conn: conn} do
+    session_opts = [
+      store: :cookie,
+      key: "_test",
+      signing_salt: "cooldude"
+    ]
+
+    conn =
+      conn
+      |> Plug.Session.call(Plug.Session.init(session_opts))
+      |> fetch_session
+
+    %{conn: conn}
+  end
+
+  test "doesn't do anything if the user isn't set", %{conn: conn} do
+    ret_conn =
+      conn
+      |> SetUserSessionIdPlug.call(%{})
+
+    assert ret_conn == conn
+  end
+
+  test "sets the user_id in the session to the user id of the user assign", %{conn: conn} do
+    conn =
+      conn
+      |> assign(:user, %User{id: 1})
+      |> SetUserSessionIdPlug.call(%{})
+
+    id = get_session(conn, :user_id)
+    assert id == 1
+  end
+end

test/plugs/user_enabled_plug_test.exs

@@ -0,0 +1,35 @@
+defmodule Pleroma.Plugs.UserEnabledPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Plugs.UserEnabledPlug
+  alias Pleroma.User
+
+  test "doesn't do anything if the user isn't set", %{conn: conn} do
+    ret_conn =
+      conn
+      |> UserEnabledPlug.call(%{})
+
+    assert ret_conn == conn
+  end
+
+  test "with a user that is deactivated, it removes that user", %{conn: conn} do
+    conn =
+      conn
+      |> assign(:user, %User{info: %{"deactivated" => true}})
+      |> UserEnabledPlug.call(%{})
+
+    assert conn.assigns.user == nil
+  end
+
+  test "with a user that is not deactivated, it does nothing", %{conn: conn} do
+    conn =
+      conn
+      |> assign(:user, %User{})
+
+    ret_conn =
+      conn
+      |> UserEnabledPlug.call(%{})
+
+    assert conn == ret_conn
+  end
+end

test/plugs/user_fetcher_plug_test.exs

@@ -0,0 +1,37 @@
+defmodule Pleroma.Plugs.UserFetcherPlugTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  alias Pleroma.Plugs.UserFetcherPlug
+  import Pleroma.Factory
+
+  setup do
+    user = insert(:user)
+    %{user: user}
+  end
+
+  test "if an auth_credentials assign is present, it tries to fetch the user and assigns it", %{
+    conn: conn,
+    user: user
+  } do
+    conn =
+      conn
+      |> assign(:auth_credentials, %{
+        username: user.nickname,
+        password: nil
+      })
+
+    conn =
+      conn
+      |> UserFetcherPlug.call(%{})
+
+    assert conn.assigns[:auth_user] == user
+  end
+
+  test "without a credential assign it doesn't do anything", %{conn: conn} do
+    ret_conn =
+      conn
+      |> UserFetcherPlug.call(%{})
+
+    assert conn == ret_conn
+  end
+end