Make OAuth token endpoint work with HTTP Basic auth

client_id/client_secret can now be supplied in an Authorization header
This commit is contained in:
D Anzorge 2018-06-01 18:01:56 +02:00
parent 04c584391c
commit 73904e8f78

View file

@ -56,12 +56,7 @@ def create_authorization(conn, %{
# TODO
# - proper scope handling
def token_exchange(conn, %{"grant_type" => "authorization_code"} = params) do
with %App{} = app <-
Repo.get_by(
App,
client_id: params["client_id"],
client_secret: params["client_secret"]
),
with %App{} = app <- get_app_from_request(conn, params),
fixed_token = fix_padding(params["code"]),
%Authorization{} = auth <-
Repo.get_by(Authorization, token: fixed_token, app_id: app.id),
@ -86,12 +81,7 @@ def token_exchange(
conn,
%{"grant_type" => "password", "name" => name, "password" => password} = params
) do
with %App{} = app <-
Repo.get_by(
App,
client_id: params["client_id"],
client_secret: params["client_secret"]
),
with %App{} = app <- get_app_from_request(conn, params),
%User{} = user <- User.get_cached_by_nickname(name),
true <- Pbkdf2.checkpw(password, user.password_hash),
{:ok, auth} <- Authorization.create_authorization(app, user),
@ -115,4 +105,28 @@ defp fix_padding(token) do
|> Base.url_decode64!(padding: false)
|> Base.url_encode64()
end
defp get_app_from_request(conn, params) do
# Per RFC 6749, HTTP Basic is preferred to body params
{client_id, client_secret} =
with ["Basic " <> encoded] <- get_req_header(conn, "authorization"),
{:ok, decoded} <- Base.decode64(encoded),
[id, secret] <-
String.split(decoded, ":")
|> Enum.map(fn s -> URI.decode_www_form(s) end) do
{id, secret}
else
_ -> {params["client_id"], params["client_secret"]}
end
if client_id && client_secret do
Repo.get_by(
App,
client_id: client_id,
client_secret: client_secret
)
else
nil
end
end
end