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My custom branche(s) on git.pleroma.social/pleroma/pleroma git clone https://hacktivis.me/git/pleroma.git
commit: fadcd7f1a9e41ec9b54f251cf782688bf3d36889
parent 43458cb7a144f984d2d745e50b8a992c7482265c
Author: Mark Felder <feld@feld.me>
Date:   Wed,  7 Jun 2023 09:19:22 -0400

Revert MediaProxy Host header validation

Something is going wrong here even though the tests are correct.

Diffstat:

Mchangelog.d/3896.add2+-
Mlib/pleroma/web/media_proxy/media_proxy_controller.ex25-------------------------
Mtest/pleroma/web/media_proxy/media_proxy_controller_test.exs29-----------------------------
Mtest/support/conn_case.ex5+----
4 files changed, 2 insertions(+), 59 deletions(-)

diff --git a/changelog.d/3896.add b/changelog.d/3896.add @@ -1 +1 @@ -Validate Host header for MediaProxy and Uploads and return a 302 if the base_url has changed +Validate Host header for Uploads and return a 302 if the base_url has changed diff --git a/lib/pleroma/web/media_proxy/media_proxy_controller.ex b/lib/pleroma/web/media_proxy/media_proxy_controller.ex @@ -12,7 +12,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do alias Pleroma.Web.MediaProxy alias Plug.Conn - plug(:validate_host) plug(:sandbox) def remote(conn, %{"sig" => sig64, "url" => url64}) do @@ -206,30 +205,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do Config.get([:media_proxy, :proxy_opts], []) end - defp validate_host(conn, _params) do - %{scheme: proxy_scheme, host: proxy_host, port: proxy_port} = - MediaProxy.base_url() |> URI.parse() - - if match?(^proxy_host, conn.host) do - conn - else - redirect_url = - %URI{ - scheme: proxy_scheme, - host: proxy_host, - port: proxy_port, - path: conn.request_path, - query: conn.query_string - } - |> URI.to_string() - |> String.trim_trailing("?") - - conn - |> Phoenix.Controller.redirect(external: redirect_url) - |> halt() - end - end - defp sandbox(conn, _params) do conn |> merge_resp_headers([{"content-security-policy", "sandbox;"}]) diff --git a/test/pleroma/web/media_proxy/media_proxy_controller_test.exs b/test/pleroma/web/media_proxy/media_proxy_controller_test.exs @@ -54,35 +54,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyControllerTest do } = get(conn, "/proxy/hhgfh/eeee/fff") end - test "it returns a 302 for invalid host", %{conn: conn} do - new_proxy_base = "http://mp.localhost/" - - %{scheme: new_proxy_scheme, host: new_proxy_host, port: new_proxy_port} = - URI.parse(new_proxy_base) - - clear_config([:media_proxy, :base_url], new_proxy_base) - - proxy_url = - MediaProxy.encode_url("https://pleroma.social/logo.jpeg") - |> URI.parse() - |> Map.put(:host, "wronghost") - |> URI.to_string() - - expected_url = - URI.parse(proxy_url) - |> Map.put(:host, new_proxy_host) - |> Map.put(:port, new_proxy_port) - |> Map.put(:scheme, new_proxy_scheme) - |> URI.to_string() - - with_mock Pleroma.ReverseProxy, - call: fn _conn, _url, _opts -> %Conn{status: :success} end do - conn = get(conn, proxy_url) - - assert redirected_to(conn, 302) == expected_url - end - end - test "redirects to valid url when filename is invalidated", %{conn: conn, url: url} do invalid_url = String.replace(url, "test.png", "test-file.png") response = get(conn, invalid_url) diff --git a/test/support/conn_case.ex b/test/support/conn_case.ex @@ -120,9 +120,6 @@ defmodule Pleroma.Web.ConnCase do Mox.verify_on_exit!() - {:ok, - conn: - Phoenix.ConnTest.build_conn() - |> Map.put(:host, Pleroma.Web.Endpoint.host())} + {:ok, conn: Phoenix.ConnTest.build_conn()} end end