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[#923] OAuth consumer mode refactoring, new tests, tests adjustments, readme.

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This commit is contained in:
Ivan Tashkinov 2019-04-05 15:12:02 +03:00
parent 3e7f2bfc2f
commit 47a236f753
10 changed files with 258 additions and 135 deletions
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4
config/config.exs
View file

@ -397,9 +397,7 @@
base_path: "/oauth",
providers: ueberauth_providers
config :pleroma, :auth,
oauth_consumer_strategies: oauth_consumer_strategies,
oauth_consumer_enabled: oauth_consumer_strategies != []
config :pleroma, :auth, oauth_consumer_strategies: oauth_consumer_strategies
config :pleroma, Pleroma.Mailer, adapter: Swoosh.Adapters.Sendmail

55
docs/config.md
View file

@ -412,3 +412,58 @@ Pleroma account will be created with the same name as the LDAP user name.
* `Pleroma.Web.Auth.PleromaAuthenticator`: default database authenticator
* `Pleroma.Web.Auth.LDAPAuthenticator`: LDAP authentication
## :auth
Authentication / authorization settings.
* `oauth_consumer_strategies`: lists enabled OAuth consumer strategies; by default it's set by OAUTH_CONSUMER_STRATEGIES environment variable.
OAuth consumer mode allows sign in / sign up via external OAuth providers (e.g. Twitter, Facebook, Google, Microsoft, etc.).
Implementation is based on Ueberauth; see the list of [available strategies](https://github.com/ueberauth/ueberauth/wiki/List-of-Strategies).
Note: each strategy is shipped as a separate dependency; in order to get the strategies, run `OAUTH_CONSUMER_STRATEGIES="..." mix deps.get`,
e.g. `OAUTH_CONSUMER_STRATEGIES="twitter facebook google microsoft" mix deps.get`.
The server should also be started with `OAUTH_CONSUMER_STRATEGIES="..." mix phx.server` in case you enable any strategies.
Note: each strategy requires separate setup (on external provider side and Pleroma side). Below are the guidelines on setting up most popular strategies.
* For Twitter, [register an app](https://developer.twitter.com/en/apps), configure callback URL to https://<your_host>/oauth/twitter/callback
* For Facebook, [register an app](https://developers.facebook.com/apps), configure callback URL to https://<your_host>/oauth/facebook/callback, enable Facebook Login service at https://developers.facebook.com/apps/<app_id>/fb-login/settings/
* For Google, [register an app](https://console.developers.google.com), configure callback URL to https://<your_host>/oauth/google/callback
* For Microsoft, [register an app](https://portal.azure.com), configure callback URL to https://<your_host>/oauth/microsoft/callback
Once the app is configured on external OAuth provider side, add app's credentials and strategy-specific settings (if any — e.g. see Microsoft below) to `config/prod.secret.exs`,
per strategy's documentation (e.g. [ueberauth_twitter](https://github.com/ueberauth/ueberauth_twitter)). Example config basing on environment variables:
```
# Twitter
config :ueberauth, Ueberauth.Strategy.Twitter.OAuth,
consumer_key: System.get_env("TWITTER_CONSUMER_KEY"),
consumer_secret: System.get_env("TWITTER_CONSUMER_SECRET")
# Facebook
config :ueberauth, Ueberauth.Strategy.Facebook.OAuth,
client_id: System.get_env("FACEBOOK_APP_ID"),
client_secret: System.get_env("FACEBOOK_APP_SECRET"),
redirect_uri: System.get_env("FACEBOOK_REDIRECT_URI")
# Google
config :ueberauth, Ueberauth.Strategy.Google.OAuth,
client_id: System.get_env("GOOGLE_CLIENT_ID"),
client_secret: System.get_env("GOOGLE_CLIENT_SECRET"),
redirect_uri: System.get_env("GOOGLE_REDIRECT_URI")
# Microsoft
config :ueberauth, Ueberauth.Strategy.Microsoft.OAuth,
client_id: System.get_env("MICROSOFT_CLIENT_ID"),
client_secret: System.get_env("MICROSOFT_CLIENT_SECRET")
config :ueberauth, Ueberauth,
providers: [
microsoft: {Ueberauth.Strategy.Microsoft, [callback_params: []]}
]
```

4
lib/pleroma/config.ex
View file

@ -57,4 +57,8 @@ def delete([parent_key | keys]) do
def delete(key) do
Application.delete_env(:pleroma, key)
end
def oauth_consumer_strategies, do: get([:auth, :oauth_consumer_strategies], [])
def oauth_consumer_enabled?, do: oauth_consumer_strategies() != []
end

2
lib/pleroma/web/endpoint.ex
View file

@ -59,7 +59,7 @@ defmodule Pleroma.Web.Endpoint do
else: "pleroma_key"
same_site =
if Pleroma.Config.get([:auth, :oauth_consumer_enabled]) do
if Pleroma.Config.oauth_consumer_enabled?() do
# Note: "SameSite=Strict" prevents sign in with external OAuth provider
# (there would be no cookies during callback request from OAuth provider)
"SameSite=Lax"

17
lib/pleroma/web/oauth/fallback_controller.ex
View file

@ -6,8 +6,21 @@ defmodule Pleroma.Web.OAuth.FallbackController do
use Pleroma.Web, :controller
alias Pleroma.Web.OAuth.OAuthController
# No user/password
def call(conn, _) do
def call(conn, {:register, :generic_error}) do
conn
|> put_status(:internal_server_error)
|> put_flash(:error, "Unknown error, please check the details and try again.")
|> OAuthController.registration_details(conn.params)
end
def call(conn, {:register, _error}) do
conn
|> put_status(:unauthorized)
|> put_flash(:error, "Invalid Username/Password")
|> OAuthController.registration_details(conn.params)
end
def call(conn, _error) do
conn
|> put_status(:unauthorized)
|> put_flash(:error, "Invalid Username/Password")

136
lib/pleroma/web/oauth/oauth_controller.ex
View file

@ -16,7 +16,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
import Pleroma.Web.ControllerHelper, only: [oauth_scopes: 2]
if Pleroma.Config.get([:auth, :oauth_consumer_enabled]), do: plug(Ueberauth)
if Pleroma.Config.oauth_consumer_enabled?(), do: plug(Ueberauth)
plug(:fetch_session)
plug(:fetch_flash)
@ -62,60 +62,65 @@ defp do_authorize(conn, params) do
def create_authorization(
conn,
%{
"authorization" => %{"redirect_uri" => redirect_uri} = auth_params
} = params,
%{"authorization" => auth_params} = params,
opts \\ []
) do
with {:ok, auth} <-
(opts[:auth] && {:ok, opts[:auth]}) ||
do_create_authorization(conn, params, opts[:user]) do
redirect_uri = redirect_uri(conn, redirect_uri)
cond do
redirect_uri == "urn:ietf:wg:oauth:2.0:oob" ->
render(conn, "results.html", %{
auth: auth
})
true ->
connector = if String.contains?(redirect_uri, "?"), do: "&", else: "?"
url = "#{redirect_uri}#{connector}"
url_params = %{:code => auth.token}
url_params =
if auth_params["state"] do
Map.put(url_params, :state, auth_params["state"])
else
url_params
end
url = "#{url}#{Plug.Conn.Query.encode(url_params)}"
redirect(conn, external: url)
end
with {:ok, auth} <- do_create_authorization(conn, params, opts[:user]) do
after_create_authorization(conn, auth, auth_params)
else
{scopes_issue, _} when scopes_issue in [:unsupported_scopes, :missing_scopes] ->
# Per https://github.com/tootsuite/mastodon/blob/
# 51e154f5e87968d6bb115e053689767ab33e80cd/app/controllers/api/base_controller.rb#L39
conn
|> put_flash(:error, "This action is outside the authorized scopes")
|> put_status(:unauthorized)
|> authorize(auth_params)
{:auth_active, false} ->
# Per https://github.com/tootsuite/mastodon/blob/
# 51e154f5e87968d6bb115e053689767ab33e80cd/app/controllers/api/base_controller.rb#L76
conn
|> put_flash(:error, "Your login is missing a confirmed e-mail address")
|> put_status(:forbidden)
|> authorize(auth_params)
error ->
Authenticator.handle_error(conn, error)
handle_create_authorization_error(conn, error, auth_params)
end
end
def after_create_authorization(conn, auth, %{"redirect_uri" => redirect_uri} = auth_params) do
redirect_uri = redirect_uri(conn, redirect_uri)
if redirect_uri == "urn:ietf:wg:oauth:2.0:oob" do
render(conn, "results.html", %{
auth: auth
})
else
connector = if String.contains?(redirect_uri, "?"), do: "&", else: "?"
url = "#{redirect_uri}#{connector}"
url_params = %{:code => auth.token}
url_params =
if auth_params["state"] do
Map.put(url_params, :state, auth_params["state"])
else
url_params
end
url = "#{url}#{Plug.Conn.Query.encode(url_params)}"
redirect(conn, external: url)
end
end
defp handle_create_authorization_error(conn, {scopes_issue, _}, auth_params)
when scopes_issue in [:unsupported_scopes, :missing_scopes] do
# Per https://github.com/tootsuite/mastodon/blob/
# 51e154f5e87968d6bb115e053689767ab33e80cd/app/controllers/api/base_controller.rb#L39
conn
|> put_flash(:error, "This action is outside the authorized scopes")
|> put_status(:unauthorized)
|> authorize(auth_params)
end
defp handle_create_authorization_error(conn, {:auth_active, false}, auth_params) do
# Per https://github.com/tootsuite/mastodon/blob/
# 51e154f5e87968d6bb115e053689767ab33e80cd/app/controllers/api/base_controller.rb#L76
conn
|> put_flash(:error, "Your login is missing a confirmed e-mail address")
|> put_status(:forbidden)
|> authorize(auth_params)
end
defp handle_create_authorization_error(conn, error, _auth_params) do
Authenticator.handle_error(conn, error)
end
def token_exchange(conn, %{"grant_type" => "authorization_code"} = params) do
with %App{} = app <- get_app_from_request(conn, params),
fixed_token = fix_padding(params["code"]),
@ -202,6 +207,7 @@ def token_revoke(conn, %{"token" => token} = params) do
end
end
@doc "Prepares OAuth request to provider for Ueberauth"
def prepare_request(conn, %{"provider" => provider} = params) do
scope =
oauth_scopes(params, [])
@ -218,6 +224,7 @@ def prepare_request(conn, %{"provider" => provider} = params) do
|> Map.drop(~w(scope scopes client_id redirect_uri))
|> Map.put("state", state)
# Handing the request to Ueberauth
redirect(conn, to: o_auth_path(conn, :request, provider, params))
end
@ -266,7 +273,7 @@ def callback(conn, params) do
conn
|> put_session(:registration_id, registration.id)
|> redirect(to: o_auth_path(conn, :registration_details, registration_params))
|> registration_details(registration_params)
end
else
_ ->
@ -292,32 +299,28 @@ def registration_details(conn, params) do
end
def register(conn, %{"op" => "connect"} = params) do
create_authorization_params = %{
"authorization" => Map.merge(params, %{"name" => params["auth_name"]})
}
authorization_params = Map.put(params, "name", params["auth_name"])
create_authorization_params = %{"authorization" => authorization_params}
with registration_id when not is_nil(registration_id) <- get_session_registration_id(conn),
%Registration{} = registration <- Repo.get(Registration, registration_id),
{:ok, auth} <- do_create_authorization(conn, create_authorization_params),
{_, {:ok, auth}} <-
{:create_authorization, do_create_authorization(conn, create_authorization_params)},
%User{} = user <- Repo.preload(auth, :user).user,
{:ok, _updated_registration} <- Registration.bind_to_user(registration, user) do
conn
|> put_session_registration_id(nil)
|> create_authorization(
create_authorization_params,
auth: auth
)
|> after_create_authorization(auth, authorization_params)
else
_ ->
params = Map.delete(params, "password")
{:create_authorization, error} ->
{:register, handle_create_authorization_error(conn, error, create_authorization_params)}
conn
|> put_flash(:error, "Unknown error, please try again.")
|> redirect(to: o_auth_path(conn, :registration_details, params))
_ ->
{:register, :generic_error}
end
end
def register(conn, params) do
def register(conn, %{"op" => "register"} = params) do
with registration_id when not is_nil(registration_id) <- get_session_registration_id(conn),
%Registration{} = registration <- Repo.get(Registration, registration_id),
{:ok, user} <- Authenticator.create_from_registration(conn, params, registration) do
@ -349,13 +352,12 @@ def register(conn, params) do
)
conn
|> put_status(:forbidden)
|> put_flash(:error, "Error: #{message}.")
|> redirect(to: o_auth_path(conn, :registration_details, params))
|> registration_details(params)
_ ->
conn
|> put_flash(:error, "Unknown error, please try again.")
|> redirect(to: o_auth_path(conn, :registration_details, params))
{:register, :generic_error}
end
end

2
lib/pleroma/web/templates/o_auth/o_auth/consumer.html.eex
View file

@ -9,7 +9,7 @@
<%= hidden_input f, :redirect_uri, value: @redirect_uri %>
<%= hidden_input f, :state, value: @state %>
<%= for strategy <- Pleroma.Config.get([:auth, :oauth_consumer_strategies], []) do %>
<%= for strategy <- Pleroma.Config.oauth_consumer_strategies() do %>
<%= submit "Sign in with #{String.capitalize(strategy)}", name: "provider", value: strategy %>
<% end %>
<% end %>

2
lib/pleroma/web/templates/o_auth/o_auth/show.html.eex
View file

@ -26,6 +26,6 @@
<%= submit "Authorize" %>
<% end %>
<%= if Pleroma.Config.get([:auth, :oauth_consumer_enabled]) do %>
<%= if Pleroma.Config.oauth_consumer_enabled?() do %>
<%= render @view_module, Pleroma.Web.Auth.Authenticator.oauth_consumer_template(), assigns %>
<% end %>

59
test/registration_test.exs Normal file
View file

@ -0,0 +1,59 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.RegistrationTest do
use Pleroma.DataCase
import Pleroma.Factory
alias Pleroma.Registration
alias Pleroma.Repo
describe "generic changeset" do
test "requires :provider, :uid" do
registration = build(:registration, provider: nil, uid: nil)
cs = Registration.changeset(registration, %{})
refute cs.valid?
assert [
provider: {"can't be blank", [validation: :required]},
uid: {"can't be blank", [validation: :required]}
] == cs.errors
end
test "ensures uniqueness of [:provider, :uid]" do
registration = insert(:registration)
registration2 = build(:registration, provider: registration.provider, uid: registration.uid)
cs = Registration.changeset(registration2, %{})
assert cs.valid?
assert {:error,
%Ecto.Changeset{
errors: [
uid:
{"has already been taken",
[constraint: :unique, constraint_name: "registrations_provider_uid_index"]}
]
}} = Repo.insert(cs)
# Note: multiple :uid values per [:user_id, :provider] are intentionally allowed
cs2 = Registration.changeset(registration2, %{uid: "available.uid"})
assert cs2.valid?
assert {:ok, _} = Repo.insert(cs2)
cs3 = Registration.changeset(registration2, %{provider: "provider2"})
assert cs3.valid?
assert {:ok, _} = Repo.insert(cs3)
end
test "allows `nil` :user_id (user-unbound registration)" do
registration = build(:registration, user_id: nil)
cs = Registration.changeset(registration, %{})
assert cs.valid?
assert {:ok, _} = Repo.insert(cs)
end
end
end

112
test/web/oauth/oauth_controller_test.exs
View file

@ -20,16 +20,11 @@ defmodule Pleroma.Web.OAuth.OAuthControllerTest do
describe "in OAuth consumer mode, " do
setup do
oauth_consumer_enabled_path = [:auth, :oauth_consumer_enabled]
oauth_consumer_strategies_path = [:auth, :oauth_consumer_strategies]
oauth_consumer_enabled = Pleroma.Config.get(oauth_consumer_enabled_path)
oauth_consumer_strategies = Pleroma.Config.get(oauth_consumer_strategies_path)
Pleroma.Config.put(oauth_consumer_enabled_path, true)
Pleroma.Config.put(oauth_consumer_strategies_path, ~w(twitter facebook))
on_exit(fn ->
Pleroma.Config.put(oauth_consumer_enabled_path, oauth_consumer_enabled)
Pleroma.Config.put(oauth_consumer_strategies_path, oauth_consumer_strategies)
end)
@ -42,7 +37,7 @@ defmodule Pleroma.Web.OAuth.OAuthControllerTest do
]
end
test "GET /oauth/authorize also renders OAuth consumer form", %{
test "GET /oauth/authorize renders auth forms, including OAuth consumer form", %{
app: app,
conn: conn
} do
@ -97,31 +92,6 @@ test "GET /oauth/prepare_request encodes parameters as `state` and redirects", %
} = state_components
end
test "on authentication error, redirects to `redirect_uri`", %{app: app, conn: conn} do
state_params = %{
"scope" => Enum.join(app.scopes, " "),
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"state" => ""
}
conn =
conn
|> assign(:ueberauth_failure, %{errors: [%{message: "unknown error"}]})
|> get(
"/oauth/twitter/callback",
%{
"oauth_token" => "G-5a3AAAAAAAwMH9AAABaektfSM",
"oauth_verifier" => "QZl8vUqNvXMTKpdmUnGejJxuHG75WWWs",
"provider" => "twitter",
"state" => Poison.encode!(state_params)
}
)
assert response = html_response(conn, 302)
assert redirected_to(conn) == app.redirect_uris
end
test "with user-bound registration, GET /oauth/<provider>/callback redirects to `redirect_uri` with `code`",
%{app: app, conn: conn} do
registration = insert(:registration)
@ -152,7 +122,7 @@ test "with user-bound registration, GET /oauth/<provider>/callback redirects to
end
end
test "with user-unbound registration, GET /oauth/<provider>/callback redirects to registration_details page",
test "with user-unbound registration, GET /oauth/<provider>/callback renders registration_details page",
%{app: app, conn: conn} do
registration = insert(:registration, user: nil)
@ -177,22 +147,43 @@ test "with user-unbound registration, GET /oauth/<provider>/callback redirects t
}
)
expected_redirect_params =
state_params
|> Map.delete("scope")
|> Map.merge(%{
"scope" => "read write",
"email" => Registration.email(registration),
"nickname" => Registration.nickname(registration)
})
assert response = html_response(conn, 302)
assert redirected_to(conn) ==
o_auth_path(conn, :registration_details, expected_redirect_params)
assert response = html_response(conn, 200)
assert response =~ ~r/name="op" type="submit" value="register"/
assert response =~ ~r/name="op" type="submit" value="connect"/
assert response =~ Registration.email(registration)
assert response =~ Registration.nickname(registration)
end
end
test "on authentication error, GET /oauth/<provider>/callback redirects to `redirect_uri`", %{
app: app,
conn: conn
} do
state_params = %{
"scope" => Enum.join(app.scopes, " "),
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"state" => ""
}
conn =
conn
|> assign(:ueberauth_failure, %{errors: [%{message: "(error description)"}]})
|> get(
"/oauth/twitter/callback",
%{
"oauth_token" => "G-5a3AAAAAAAwMH9AAABaektfSM",
"oauth_verifier" => "QZl8vUqNvXMTKpdmUnGejJxuHG75WWWs",
"provider" => "twitter",
"state" => Poison.encode!(state_params)
}
)
assert response = html_response(conn, 302)
assert redirected_to(conn) == app.redirect_uris
assert get_flash(conn, :error) == "Failed to authenticate: (error description)."
end
test "GET /oauth/registration_details renders registration details form", %{
app: app,
conn: conn
@ -243,7 +234,7 @@ test "with valid params, POST /oauth/register?op=register redirects to `redirect
assert redirected_to(conn) =~ ~r/#{app.redirect_uris}\?code=.+/
end
test "with invalid params, POST /oauth/register?op=register redirects to registration_details page",
test "with invalid params, POST /oauth/register?op=register renders registration_details page",
%{
app: app,
conn: conn
@ -257,19 +248,22 @@ test "with invalid params, POST /oauth/register?op=register redirects to registr
"client_id" => app.client_id,
"redirect_uri" => app.redirect_uris,
"state" => "a_state",
"nickname" => another_user.nickname,
"email" => another_user.email
"nickname" => "availablenickname",
"email" => "available@email.com"
}
conn =
conn
|> put_session(:registration_id, registration.id)
|> post("/oauth/register", params)
for {bad_param, bad_param_value} <-
[{"nickname", another_user.nickname}, {"email", another_user.email}] do
bad_params = Map.put(params, bad_param, bad_param_value)
assert response = html_response(conn, 302)
conn =
conn
|> put_session(:registration_id, registration.id)
|> post("/oauth/register", bad_params)
assert redirected_to(conn) ==
o_auth_path(conn, :registration_details, params)
assert html_response(conn, 403) =~ ~r/name="op" type="submit" value="register"/
assert get_flash(conn, :error) == "Error: #{bad_param} has already been taken."
end
end
test "with valid params, POST /oauth/register?op=connect redirects to `redirect_uri` with `code`",
@ -300,7 +294,7 @@ test "with valid params, POST /oauth/register?op=connect redirects to `redirect_
assert redirected_to(conn) =~ ~r/#{app.redirect_uris}\?code=.+/
end
test "with invalid params, POST /oauth/register?op=connect redirects to registration_details page",
test "with invalid params, POST /oauth/register?op=connect renders registration_details page",
%{
app: app,
conn: conn
@ -323,10 +317,8 @@ test "with invalid params, POST /oauth/register?op=connect redirects to registra
|> put_session(:registration_id, registration.id)
|> post("/oauth/register", params)
assert response = html_response(conn, 302)
assert redirected_to(conn) ==
o_auth_path(conn, :registration_details, Map.delete(params, "password"))
assert html_response(conn, 401) =~ ~r/name="op" type="submit" value="connect"/
assert get_flash(conn, :error) == "Invalid Username/Password"
end
end