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diff --git a/lib/pleroma/web/oauth/oauth_controller.ex b/lib/pleroma/web/oauth/oauth_controller.ex
index 11dc1806f..bc6c365c9 100644
--- a/lib/pleroma/web/oauth/oauth_controller.ex
+++ b/lib/pleroma/web/oauth/oauth_controller.ex
@@ -1,118 +1,132 @@
defmodule Pleroma.Web.OAuth.OAuthController do
use Pleroma.Web, :controller
alias Pleroma.Web.OAuth.{Authorization, Token, App}
alias Pleroma.{Repo, User}
alias Comeonin.Pbkdf2
plug(:fetch_session)
plug(:fetch_flash)
action_fallback(Pleroma.Web.OAuth.FallbackController)
def authorize(conn, params) do
render(conn, "show.html", %{
response_type: params["response_type"],
client_id: params["client_id"],
scope: params["scope"],
redirect_uri: params["redirect_uri"],
state: params["state"]
})
end
def create_authorization(conn, %{
"authorization" =>
%{
"name" => name,
"password" => password,
"client_id" => client_id,
"redirect_uri" => redirect_uri
} = params
}) do
with %User{} = user <- User.get_by_nickname_or_email(name),
true <- Pbkdf2.checkpw(password, user.password_hash),
%App{} = app <- Repo.get_by(App, client_id: client_id),
{:ok, auth} <- Authorization.create_authorization(app, user) do
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}code=#{auth.token}"
url =
if params["state"] do
url <> "&state=#{params["state"]}"
else
url
end
redirect(conn, external: url)
end
end
end
# 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),
{:ok, token} <- Token.exchange_token(app, auth) do
response = %{
token_type: "Bearer",
access_token: token.token,
refresh_token: token.refresh_token,
expires_in: 60 * 10,
scope: "read write follow"
}
json(conn, response)
else
_error -> json(conn, %{error: "Invalid credentials"})
end
end
# TODO
# - investigate a way to verify the user wants to grant read/write/follow once scope handling is done
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),
{:ok, token} <- Token.exchange_token(app, auth) do
response = %{
token_type: "Bearer",
access_token: token.token,
refresh_token: token.refresh_token,
expires_in: 60 * 10,
scope: "read write follow"
}
json(conn, response)
else
_error -> json(conn, %{error: "Invalid credentials"})
end
end
defp fix_padding(token) do
token
|> 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

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