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# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.MediaProxyTest do
use ExUnit.Case
use Pleroma.Tests.Helpers
alias Pleroma.Config
alias Pleroma.UnstubbedConfigMock, as: ConfigMock
alias Pleroma.Web.Endpoint
alias Pleroma.Web.MediaProxy
import Mox
setup do
ConfigMock
|> stub_with(Pleroma.Test.StaticConfig)
:ok
end
defp decode_result(encoded) do
{:ok, decoded} = MediaProxy.decode_url(encoded)
decoded
end
describe "when enabled" do
setup do: clear_config([:media_proxy, :enabled], true)
test "ignores invalid url" do
assert MediaProxy.url(nil) == nil
assert MediaProxy.url("") == nil
end
test "ignores relative url" do
assert MediaProxy.url("/local") == "/local"
assert MediaProxy.url("/") == "/"
end
test "ignores local url" do
local_url = Endpoint.url() <> "/hello"
local_root = Endpoint.url()
assert MediaProxy.url(local_url) == local_url
assert MediaProxy.url(local_root) == local_root
end
test "encodes and decodes URL" do
url = "https://pleroma.soykaf.com/static/logo.png"
encoded = MediaProxy.url(url)
assert String.starts_with?(
encoded,
Config.get([:media_proxy, :base_url], Pleroma.Web.Endpoint.url())
)
assert String.ends_with?(encoded, "/logo.png")
assert decode_result(encoded) == url
end
test "encodes and decodes URL without a path" do
url = "https://pleroma.soykaf.com"
encoded = MediaProxy.url(url)
assert decode_result(encoded) == url
end
test "encodes and decodes URL without an extension" do
url = "https://pleroma.soykaf.com/path/"
encoded = MediaProxy.url(url)
assert String.ends_with?(encoded, "/path")
assert decode_result(encoded) == url
end
test "encodes and decodes URL and ignores query params for the path" do
url = "https://pleroma.soykaf.com/static/logo.png?93939393939&bunny=true"
encoded = MediaProxy.url(url)
assert String.ends_with?(encoded, "/logo.png")
assert decode_result(encoded) == url
end
test "validates signature" do
encoded = MediaProxy.url("https://pleroma.social")
clear_config(
[Endpoint, :secret_key_base],
"00000000000000000000000000000000000000000000000"
)
[_, "proxy", sig, base64 | _] = URI.parse(encoded).path |> String.split("/")
assert MediaProxy.decode_url(sig, base64) == {:error, :invalid_signature}
end
def test_verify_request_path_and_url(request_path, url, expected_result) do
assert MediaProxy.verify_request_path_and_url(request_path, url) == expected_result
assert MediaProxy.verify_request_path_and_url(
%Plug.Conn{
params: %{"filename" => Path.basename(request_path)},
request_path: request_path
},
url
) == expected_result
end
test "if first arg of `verify_request_path_and_url/2` is a Plug.Conn without \"filename\" " <>
"parameter, `verify_request_path_and_url/2` returns :ok " do
assert MediaProxy.verify_request_path_and_url(
%Plug.Conn{params: %{}, request_path: "/some/path"},
"https://instance.com/file.jpg"
) == :ok
assert MediaProxy.verify_request_path_and_url(
%Plug.Conn{params: %{}, request_path: "/path/to/file.jpg"},
"https://instance.com/file.jpg"
) == :ok
end
test "`verify_request_path_and_url/2` preserves the encoded or decoded path" do
test_verify_request_path_and_url(
"/Hello world.jpg",
"http://pleroma.social/Hello world.jpg",
:ok
)
test_verify_request_path_and_url(
"/Hello%20world.jpg",
"http://pleroma.social/Hello%20world.jpg",
:ok
)
test_verify_request_path_and_url(
"/my%2Flong%2Furl%2F2019%2F07%2FS.jpg",
"http://pleroma.social/my%2Flong%2Furl%2F2019%2F07%2FS.jpg",
:ok
)
test_verify_request_path_and_url(
# Note: `conn.request_path` returns encoded url
"/ANALYSE-DAI-_-LE-STABLECOIN-100-D%C3%89CENTRALIS%C3%89-BQ.jpg",
"https://mydomain.com/uploads/2019/07/ANALYSE-DAI-_-LE-STABLECOIN-100-DÉCENTRALISÉ-BQ.jpg",
:ok
)
test_verify_request_path_and_url(
"/my%2Flong%2Furl%2F2019%2F07%2FS",
"http://pleroma.social/my%2Flong%2Furl%2F2019%2F07%2FS.jpg",
{:wrong_filename, "my%2Flong%2Furl%2F2019%2F07%2FS.jpg"}
)
end
test "uses the configured base_url" do
base_url = "https://cache.pleroma.social"
clear_config([:media_proxy, :base_url], base_url)
url = "https://pleroma.soykaf.com/static/logo.png"
encoded = MediaProxy.url(url)
assert String.starts_with?(encoded, base_url)
end
# Some sites expect ASCII encoded characters in the URL to be preserved even if
# unnecessary.
# Issues: https://git.pleroma.social/pleroma/pleroma/issues/580
# https://git.pleroma.social/pleroma/pleroma/issues/1055
test "preserve ASCII encoding" do
url =
"https://pleroma.com/%20/%21/%22/%23/%24/%25/%26/%27/%28/%29/%2A/%2B/%2C/%2D/%2E/%2F/%30/%31/%32/%33/%34/%35/%36/%37/%38/%39/%3A/%3B/%3C/%3D/%3E/%3F/%40/%41/%42/%43/%44/%45/%46/%47/%48/%49/%4A/%4B/%4C/%4D/%4E/%4F/%50/%51/%52/%53/%54/%55/%56/%57/%58/%59/%5A/%5B/%5C/%5D/%5E/%5F/%60/%61/%62/%63/%64/%65/%66/%67/%68/%69/%6A/%6B/%6C/%6D/%6E/%6F/%70/%71/%72/%73/%74/%75/%76/%77/%78/%79/%7A/%7B/%7C/%7D/%7E/%7F/%80/%81/%82/%83/%84/%85/%86/%87/%88/%89/%8A/%8B/%8C/%8D/%8E/%8F/%90/%91/%92/%93/%94/%95/%96/%97/%98/%99/%9A/%9B/%9C/%9D/%9E/%9F/%C2%A0/%A1/%A2/%A3/%A4/%A5/%A6/%A7/%A8/%A9/%AA/%AB/%AC/%C2%AD/%AE/%AF/%B0/%B1/%B2/%B3/%B4/%B5/%B6/%B7/%B8/%B9/%BA/%BB/%BC/%BD/%BE/%BF/%C0/%C1/%C2/%C3/%C4/%C5/%C6/%C7/%C8/%C9/%CA/%CB/%CC/%CD/%CE/%CF/%D0/%D1/%D2/%D3/%D4/%D5/%D6/%D7/%D8/%D9/%DA/%DB/%DC/%DD/%DE/%DF/%E0/%E1/%E2/%E3/%E4/%E5/%E6/%E7/%E8/%E9/%EA/%EB/%EC/%ED/%EE/%EF/%F0/%F1/%F2/%F3/%F4/%F5/%F6/%F7/%F8/%F9/%FA/%FB/%FC/%FD/%FE/%FF"
encoded = MediaProxy.url(url)
assert decode_result(encoded) == url
end
# This includes unsafe/reserved characters which are not interpreted as part of the URL
# and would otherwise have to be ASCII encoded. It is our role to ensure the proxied URL
# is unmodified, so we are testing these characters anyway.
test "preserve non-unicode characters per RFC3986" do
url =
"https://pleroma.com/ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890-._~:/?#[]@!$&'()*+,;=|^`{}"
encoded = MediaProxy.url(url)
assert decode_result(encoded) == url
end
test "preserve unicode characters" do
url = "https://ko.wikipedia.org/wiki/위키백과:대문"
encoded = MediaProxy.url(url)
assert decode_result(encoded) == url
end
end
describe "when disabled" do
setup do: clear_config([:media_proxy, :enabled], false)
test "does not encode remote urls" do
assert MediaProxy.url("https://google.fr") == "https://google.fr"
end
end
describe "whitelist" do
setup do: clear_config([:media_proxy, :enabled], true)
test "mediaproxy whitelist" do
clear_config([:media_proxy, :whitelist], ["https://google.com", "https://feld.me"])
url = "https://feld.me/foo.png"
unencoded = MediaProxy.url(url)
assert unencoded == url
end
# TODO: delete after removing support bare domains for media proxy whitelist
test "mediaproxy whitelist bare domains whitelist (deprecated)" do
clear_config([:media_proxy, :whitelist], ["google.com", "feld.me"])
url = "https://feld.me/foo.png"
unencoded = MediaProxy.url(url)
assert unencoded == url
end
test "does not change whitelisted urls" do
clear_config([:media_proxy, :whitelist], ["mycdn.akamai.com"])
clear_config([:media_proxy, :base_url], "https://cache.pleroma.social")
media_url = "https://mycdn.akamai.com"
url = "#{media_url}/static/logo.png"
encoded = MediaProxy.url(url)
assert String.starts_with?(encoded, media_url)
end
test "ensure Pleroma.Upload base_url is always whitelisted" do
media_url = "https://media.pleroma.social"
ConfigMock
|> stub(:get, fn
[Pleroma.Upload, :base_url] -> media_url
path -> Pleroma.Test.StaticConfig.get(path)
end)
url = "#{media_url}/static/logo.png"
encoded = MediaProxy.url(url)
assert String.starts_with?(encoded, media_url)
end
end
end
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