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diff --git a/lib/pleroma/web/media_proxy/controller.ex b/lib/pleroma/web/media_proxy/controller.ex
index c0552d89f..ea33d7685 100644
--- a/lib/pleroma/web/media_proxy/controller.ex
+++ b/lib/pleroma/web/media_proxy/controller.ex
@@ -1,44 +1,39 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.MediaProxy.MediaProxyController do
use Pleroma.Web, :controller
alias Pleroma.ReverseProxy
alias Pleroma.Web.MediaProxy
@default_proxy_opts [max_body_length: 25 * 1_048_576, http: [follow_redirect: true]]
def remote(conn, %{"sig" => sig64, "url" => url64} = params) do
with config <- Pleroma.Config.get([:media_proxy], []),
true <- Keyword.get(config, :enabled, false),
{:ok, url} <- MediaProxy.decode_url(sig64, url64),
:ok <- filename_matches(Map.has_key?(params, "filename"), conn.request_path, url) do
ReverseProxy.call(conn, url, Keyword.get(config, :proxy_opts, @default_proxy_opts))
else
false ->
send_resp(conn, 404, Plug.Conn.Status.reason_phrase(404))
{:error, :invalid_signature} ->
send_resp(conn, 403, Plug.Conn.Status.reason_phrase(403))
{:wrong_filename, filename} ->
redirect(conn, external: MediaProxy.build_url(sig64, url64, filename))
end
end
def filename_matches(has_filename, path, url) do
- filename =
- url
- |> MediaProxy.filename()
- |> URI.decode()
-
- path = URI.decode(path)
+ filename = url |> MediaProxy.filename()
if has_filename && filename && Path.basename(path) != filename do
{:wrong_filename, filename}
else
:ok
end
end
end
diff --git a/test/media_proxy_test.exs b/test/media_proxy_test.exs
index 1d6d170b7..fbf200931 100644
--- a/test/media_proxy_test.exs
+++ b/test/media_proxy_test.exs
@@ -1,217 +1,209 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.MediaProxyTest do
use ExUnit.Case
import Pleroma.Web.MediaProxy
alias Pleroma.Web.MediaProxy.MediaProxyController
setup do
enabled = Pleroma.Config.get([:media_proxy, :enabled])
on_exit(fn -> Pleroma.Config.put([:media_proxy, :enabled], enabled) end)
:ok
end
describe "when enabled" do
setup do
Pleroma.Config.put([:media_proxy, :enabled], true)
:ok
end
test "ignores invalid url" do
assert url(nil) == nil
assert url("") == nil
end
test "ignores relative url" do
assert url("/local") == "/local"
assert url("/") == "/"
end
test "ignores local url" do
local_url = Pleroma.Web.Endpoint.url() <> "/hello"
local_root = Pleroma.Web.Endpoint.url()
assert url(local_url) == local_url
assert url(local_root) == local_root
end
test "encodes and decodes URL" do
url = "https://pleroma.soykaf.com/static/logo.png"
encoded = url(url)
assert String.starts_with?(
encoded,
Pleroma.Config.get([:media_proxy, :base_url], Pleroma.Web.base_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 = url(url)
assert decode_result(encoded) == url
end
test "encodes and decodes URL without an extension" do
url = "https://pleroma.soykaf.com/path/"
encoded = 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 = url(url)
assert String.ends_with?(encoded, "/logo.png")
assert decode_result(encoded) == url
end
test "validates signature" do
secret_key_base = Pleroma.Config.get([Pleroma.Web.Endpoint, :secret_key_base])
on_exit(fn ->
Pleroma.Config.put([Pleroma.Web.Endpoint, :secret_key_base], secret_key_base)
end)
encoded = url("https://pleroma.social")
Pleroma.Config.put(
[Pleroma.Web.Endpoint, :secret_key_base],
"00000000000000000000000000000000000000000000000"
)
[_, "proxy", sig, base64 | _] = URI.parse(encoded).path |> String.split("/")
assert decode_url(sig, base64) == {:error, :invalid_signature}
end
- test "filename_matches matches url encoded paths" do
+ test "filename_matches preserves the encoded or decoded path" do
assert MediaProxyController.filename_matches(
true,
- "/Hello%20world.jpg",
+ "/Hello world.jpg",
"http://pleroma.social/Hello world.jpg"
) == :ok
assert MediaProxyController.filename_matches(
true,
"/Hello%20world.jpg",
"http://pleroma.social/Hello%20world.jpg"
) == :ok
- end
- test "filename_matches matches non-url encoded paths" do
assert MediaProxyController.filename_matches(
true,
- "/Hello world.jpg",
- "http://pleroma.social/Hello%20world.jpg"
- ) == :ok
-
- assert MediaProxyController.filename_matches(
- true,
- "/Hello world.jpg",
- "http://pleroma.social/Hello world.jpg"
+ "/my%2Flong%2Furl%2F2019%2F07%2FS.jpg",
+ "http://pleroma.social/my%2Flong%2Furl%2F2019%2F07%2FS.jpg"
) == :ok
end
test "uses the configured base_url" do
base_url = Pleroma.Config.get([:media_proxy, :base_url])
if base_url do
on_exit(fn ->
Pleroma.Config.put([:media_proxy, :base_url], base_url)
end)
end
Pleroma.Config.put([:media_proxy, :base_url], "https://cache.pleroma.social")
url = "https://pleroma.soykaf.com/static/logo.png"
encoded = url(url)
assert String.starts_with?(encoded, Pleroma.Config.get([:media_proxy, :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 = 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 = url(url)
assert decode_result(encoded) == url
end
test "preserve unicode characters" do
url = "https://ko.wikipedia.org/wiki/위키백과:대문"
encoded = url(url)
assert decode_result(encoded) == url
end
test "does not change whitelisted urls" do
upload_config = Pleroma.Config.get([Pleroma.Upload])
media_url = "https://media.pleroma.social"
Pleroma.Config.put([Pleroma.Upload, :base_url], media_url)
Pleroma.Config.put([:media_proxy, :whitelist], ["media.pleroma.social"])
Pleroma.Config.put([:media_proxy, :base_url], "https://cache.pleroma.social")
url = "#{media_url}/static/logo.png"
encoded = url(url)
assert String.starts_with?(encoded, media_url)
Pleroma.Config.put([Pleroma.Upload], upload_config)
end
end
describe "when disabled" do
setup do
enabled = Pleroma.Config.get([:media_proxy, :enabled])
if enabled do
Pleroma.Config.put([:media_proxy, :enabled], false)
on_exit(fn ->
Pleroma.Config.put([:media_proxy, :enabled], enabled)
:ok
end)
end
:ok
end
test "does not encode remote urls" do
assert url("https://google.fr") == "https://google.fr"
end
end
defp decode_result(encoded) do
[_, "proxy", sig, base64 | _] = URI.parse(encoded).path |> String.split("/")
{:ok, decoded} = decode_url(sig, base64)
decoded
end
test "mediaproxy whitelist" do
Pleroma.Config.put([:media_proxy, :enabled], true)
Pleroma.Config.put([:media_proxy, :whitelist], ["google.com", "feld.me"])
url = "https://feld.me/foo.png"
unencoded = url(url)
assert unencoded == url
end
end

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