342 lines
		
	
	
	
		
			10 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
			
		
		
	
	
			342 lines
		
	
	
	
		
			10 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.MediaProxy.MediaProxyControllerTest do
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  use Pleroma.Web.ConnCase
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  import Mock
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  alias Pleroma.Web.MediaProxy
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  alias Plug.Conn
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  setup do
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    on_exit(fn -> Cachex.clear(:banned_urls_cache) end)
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  end
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  describe "Media Proxy" do
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    setup do
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      clear_config([:media_proxy, :enabled], true)
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      clear_config([Pleroma.Web.Endpoint, :secret_key_base], "00000000000")
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      [url: MediaProxy.encode_url("https://google.fn/test.png")]
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    end
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    test "it returns 404 when disabled", %{conn: conn} do
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      clear_config([:media_proxy, :enabled], false)
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      assert %Conn{
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               status: 404,
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               resp_body: "Not Found"
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             } = get(conn, "/proxy/hhgfh/eeeee")
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      assert %Conn{
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               status: 404,
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               resp_body: "Not Found"
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             } = get(conn, "/proxy/hhgfh/eeee/fff")
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    end
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    test "it returns 403 for invalid signature", %{conn: conn, url: url} do
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      Pleroma.Config.put([Pleroma.Web.Endpoint, :secret_key_base], "000")
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      %{path: path} = URI.parse(url)
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      assert %Conn{
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               status: 403,
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               resp_body: "Forbidden"
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             } = get(conn, path)
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      assert %Conn{
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               status: 403,
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               resp_body: "Forbidden"
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             } = get(conn, "/proxy/hhgfh/eeee")
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      assert %Conn{
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               status: 403,
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               resp_body: "Forbidden"
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             } = get(conn, "/proxy/hhgfh/eeee/fff")
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    end
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    test "redirects to valid url when filename is invalidated", %{conn: conn, url: url} do
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      invalid_url = String.replace(url, "test.png", "test-file.png")
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      response = get(conn, invalid_url)
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      assert response.status == 302
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      assert redirected_to(response) == url
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    end
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    test "it performs ReverseProxy.call with valid signature", %{conn: conn, url: url} do
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      with_mock Pleroma.ReverseProxy,
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        call: fn _conn, _url, _opts -> %Conn{status: :success} end do
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        assert %Conn{status: :success} = get(conn, url)
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      end
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    end
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    test "it returns 404 when url is in banned_urls cache", %{conn: conn, url: url} do
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      MediaProxy.put_in_banned_urls("https://google.fn/test.png")
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      with_mock Pleroma.ReverseProxy,
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        call: fn _conn, _url, _opts -> %Conn{status: :success} end do
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        assert %Conn{status: 404, resp_body: "Not Found"} = get(conn, url)
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      end
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    end
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  end
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  describe "Media Preview Proxy" do
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    def assert_dependencies_installed do
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      missing_dependencies = Pleroma.Helpers.MediaHelper.missing_dependencies()
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      assert missing_dependencies == [],
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             "Error: missing dependencies (please refer to `docs/installation`): #{
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               inspect(missing_dependencies)
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             }"
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    end
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    setup do
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      clear_config([:media_proxy, :enabled], true)
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      clear_config([:media_preview_proxy, :enabled], true)
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      clear_config([Pleroma.Web.Endpoint, :secret_key_base], "00000000000")
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      original_url = "https://google.fn/test.png"
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      [
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        url: MediaProxy.encode_preview_url(original_url),
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        media_proxy_url: MediaProxy.encode_url(original_url)
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      ]
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    end
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    test "returns 404 when media proxy is disabled", %{conn: conn} do
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      clear_config([:media_proxy, :enabled], false)
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      assert %Conn{
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               status: 404,
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               resp_body: "Not Found"
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             } = get(conn, "/proxy/preview/hhgfh/eeeee")
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      assert %Conn{
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               status: 404,
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               resp_body: "Not Found"
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             } = get(conn, "/proxy/preview/hhgfh/fff")
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    end
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    test "returns 404 when disabled", %{conn: conn} do
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      clear_config([:media_preview_proxy, :enabled], false)
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      assert %Conn{
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               status: 404,
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               resp_body: "Not Found"
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             } = get(conn, "/proxy/preview/hhgfh/eeeee")
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      assert %Conn{
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               status: 404,
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               resp_body: "Not Found"
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             } = get(conn, "/proxy/preview/hhgfh/fff")
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    end
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    test "it returns 403 for invalid signature", %{conn: conn, url: url} do
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      Pleroma.Config.put([Pleroma.Web.Endpoint, :secret_key_base], "000")
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      %{path: path} = URI.parse(url)
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      assert %Conn{
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               status: 403,
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               resp_body: "Forbidden"
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             } = get(conn, path)
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      assert %Conn{
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               status: 403,
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               resp_body: "Forbidden"
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             } = get(conn, "/proxy/preview/hhgfh/eeee")
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      assert %Conn{
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               status: 403,
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               resp_body: "Forbidden"
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             } = get(conn, "/proxy/preview/hhgfh/eeee/fff")
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    end
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    test "redirects to valid url when filename is invalidated", %{conn: conn, url: url} do
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      invalid_url = String.replace(url, "test.png", "test-file.png")
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      response = get(conn, invalid_url)
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      assert response.status == 302
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      assert redirected_to(response) == url
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    end
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    test "responds with 424 Failed Dependency if HEAD request to media proxy fails", %{
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      conn: conn,
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      url: url,
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      media_proxy_url: media_proxy_url
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    } do
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{status: 500, body: ""}
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      end)
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      response = get(conn, url)
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      assert response.status == 424
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      assert response.resp_body == "Can't fetch HTTP headers (HTTP 500)."
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    end
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    test "redirects to media proxy URI on unsupported content type", %{
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      conn: conn,
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      url: url,
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      media_proxy_url: media_proxy_url
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    } do
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: "", headers: [{"content-type", "application/pdf"}]}
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      end)
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      response = get(conn, url)
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      assert response.status == 302
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      assert redirected_to(response) == media_proxy_url
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    end
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    test "with `static=true` and GIF image preview requested, responds with JPEG image", %{
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      conn: conn,
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      url: url,
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      media_proxy_url: media_proxy_url
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    } do
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      assert_dependencies_installed()
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      # Setting a high :min_content_length to ensure this scenario is not affected by its logic
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      clear_config([:media_preview_proxy, :min_content_length], 1_000_000_000)
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{
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            status: 200,
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            body: "",
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            headers: [{"content-type", "image/gif"}, {"content-length", "1001718"}]
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          }
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        %{method: :get, url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: File.read!("test/fixtures/image.gif")}
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      end)
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      response = get(conn, url <> "?static=true")
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      assert response.status == 200
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      assert Conn.get_resp_header(response, "content-type") == ["image/jpeg"]
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      assert response.resp_body != ""
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    end
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    test "with GIF image preview requested and no `static` param, redirects to media proxy URI",
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         %{
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           conn: conn,
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           url: url,
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           media_proxy_url: media_proxy_url
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         } do
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: "", headers: [{"content-type", "image/gif"}]}
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      end)
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      response = get(conn, url)
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      assert response.status == 302
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      assert redirected_to(response) == media_proxy_url
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    end
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    test "with `static` param and non-GIF image preview requested, " <>
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           "redirects to media preview proxy URI without `static` param",
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         %{
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           conn: conn,
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           url: url,
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           media_proxy_url: media_proxy_url
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         } do
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: "", headers: [{"content-type", "image/jpeg"}]}
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      end)
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      response = get(conn, url <> "?static=true")
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      assert response.status == 302
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      assert redirected_to(response) == url
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    end
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    test "with :min_content_length setting not matched by Content-Length header, " <>
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           "redirects to media proxy URI",
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         %{
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           conn: conn,
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           url: url,
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           media_proxy_url: media_proxy_url
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         } do
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      clear_config([:media_preview_proxy, :min_content_length], 100_000)
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{
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            status: 200,
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            body: "",
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            headers: [{"content-type", "image/gif"}, {"content-length", "5000"}]
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          }
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      end)
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      response = get(conn, url)
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      assert response.status == 302
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      assert redirected_to(response) == media_proxy_url
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    end
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    test "thumbnails PNG images into PNG", %{
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      conn: conn,
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      url: url,
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      media_proxy_url: media_proxy_url
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    } do
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      assert_dependencies_installed()
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: "", headers: [{"content-type", "image/png"}]}
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        %{method: :get, url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: File.read!("test/fixtures/image.png")}
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      end)
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      response = get(conn, url)
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      assert response.status == 200
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      assert Conn.get_resp_header(response, "content-type") == ["image/png"]
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      assert response.resp_body != ""
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    end
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    test "thumbnails JPEG images into JPEG", %{
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      conn: conn,
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      url: url,
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      media_proxy_url: media_proxy_url
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    } do
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      assert_dependencies_installed()
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: "", headers: [{"content-type", "image/jpeg"}]}
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        %{method: :get, url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: File.read!("test/fixtures/image.jpg")}
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      end)
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      response = get(conn, url)
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      assert response.status == 200
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      assert Conn.get_resp_header(response, "content-type") == ["image/jpeg"]
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      assert response.resp_body != ""
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    end
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    test "redirects to media proxy URI in case of thumbnailing error", %{
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      conn: conn,
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      url: url,
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      media_proxy_url: media_proxy_url
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    } do
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      Tesla.Mock.mock(fn
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        %{method: "head", url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: "", headers: [{"content-type", "image/jpeg"}]}
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        %{method: :get, url: ^media_proxy_url} ->
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          %Tesla.Env{status: 200, body: "<html><body>error</body></html>"}
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      end)
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      response = get(conn, url)
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      assert response.status == 302
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      assert redirected_to(response) == media_proxy_url
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    end
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  end
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end
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