forked from AkkomaGang/akkoma
97 lines
2.8 KiB
Elixir
97 lines
2.8 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Web.OAuth.MFAController do
|
|
@moduledoc """
|
|
The model represents api to use Multi Factor authentications.
|
|
"""
|
|
|
|
use Pleroma.Web, :controller
|
|
|
|
alias Pleroma.MFA
|
|
alias Pleroma.Web.Auth.TOTPAuthenticator
|
|
alias Pleroma.Web.OAuth.MFAView, as: View
|
|
alias Pleroma.Web.OAuth.OAuthController
|
|
alias Pleroma.Web.OAuth.Token
|
|
|
|
plug(:fetch_session when action in [:show, :verify])
|
|
plug(:fetch_flash when action in [:show, :verify])
|
|
|
|
@doc """
|
|
Display form to input mfa code or recovery code.
|
|
"""
|
|
def show(conn, %{"mfa_token" => mfa_token} = params) do
|
|
template = Map.get(params, "challenge_type", "totp")
|
|
|
|
conn
|
|
|> put_view(View)
|
|
|> render("#{template}.html", %{
|
|
mfa_token: mfa_token,
|
|
redirect_uri: params["redirect_uri"],
|
|
state: params["state"]
|
|
})
|
|
end
|
|
|
|
@doc """
|
|
Verification code and continue authorization.
|
|
"""
|
|
def verify(conn, %{"mfa" => %{"mfa_token" => mfa_token} = mfa_params} = _) do
|
|
with {:ok, %{user: user, authorization: auth}} <- MFA.Token.validate(mfa_token),
|
|
{:ok, _} <- validates_challenge(user, mfa_params) do
|
|
conn
|
|
|> OAuthController.after_create_authorization(auth, %{
|
|
"authorization" => %{
|
|
"redirect_uri" => mfa_params["redirect_uri"],
|
|
"state" => mfa_params["state"]
|
|
}
|
|
})
|
|
else
|
|
_ ->
|
|
conn
|
|
|> put_flash(:error, "Two-factor authentication failed.")
|
|
|> put_status(:unauthorized)
|
|
|> show(mfa_params)
|
|
end
|
|
end
|
|
|
|
@doc """
|
|
Verification second step of MFA (or recovery) and returns access token.
|
|
|
|
## Endpoint
|
|
POST /oauth/mfa/challenge
|
|
|
|
params:
|
|
`client_id`
|
|
`client_secret`
|
|
`mfa_token` - access token to check second step of mfa
|
|
`challenge_type` - 'totp' or 'recovery'
|
|
`code`
|
|
|
|
"""
|
|
def challenge(conn, %{"mfa_token" => mfa_token} = params) do
|
|
with {:ok, app} <- Token.Utils.fetch_app(conn),
|
|
{:ok, %{user: user, authorization: auth}} <- MFA.Token.validate(mfa_token),
|
|
{:ok, _} <- validates_challenge(user, params),
|
|
{:ok, token} <- Token.exchange_token(app, auth) do
|
|
json(conn, Token.Response.build(user, token))
|
|
else
|
|
_error ->
|
|
conn
|
|
|> put_status(400)
|
|
|> json(%{error: "Invalid code"})
|
|
end
|
|
end
|
|
|
|
# Verify TOTP Code
|
|
defp validates_challenge(user, %{"challenge_type" => "totp", "code" => code} = _) do
|
|
TOTPAuthenticator.verify(code, user)
|
|
end
|
|
|
|
# Verify Recovery Code
|
|
defp validates_challenge(user, %{"challenge_type" => "recovery", "code" => code} = _) do
|
|
TOTPAuthenticator.verify_recovery_code(user, code)
|
|
end
|
|
|
|
defp validates_challenge(_, _), do: {:error, :unsupported_challenge_type}
|
|
end
|