X-Git-Url: https://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Fmedia_proxy%2Fmedia_proxy.ex;h=5762e767b8586b0b5511d4f5bd425ac77889af8b;hb=45e4642a58f5299d2cd3f142aea110a474eb477f;hp=a61726b3efc384dfeb288b22b46f905a16ed2e76;hpb=922abcda61298a7bca48894cb9a51a52fdeab1ed;p=akkoma
diff --git a/lib/pleroma/web/media_proxy/media_proxy.ex b/lib/pleroma/web/media_proxy/media_proxy.ex
index a61726b3e..5762e767b 100644
--- a/lib/pleroma/web/media_proxy/media_proxy.ex
+++ b/lib/pleroma/web/media_proxy/media_proxy.ex
@@ -1,5 +1,5 @@
# Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors
+# Copyright © 2017-2019 Pleroma Authors
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.MediaProxy do
@@ -9,30 +9,48 @@ defmodule Pleroma.Web.MediaProxy do
def url(""), do: nil
- def url(url = "/" <> _), do: url
+ def url("/" <> _ = url), do: url
def url(url) do
config = Application.get_env(:pleroma, :media_proxy, [])
+ domain = URI.parse(url).host
- if !Keyword.get(config, :enabled, false) or String.starts_with?(url, Pleroma.Web.base_url()) do
- url
- else
- secret = Application.get_env(:pleroma, Pleroma.Web.Endpoint)[:secret_key_base]
-
- # The URL is url-decoded and encoded again to ensure it is correctly encoded and not twice.
- base64 =
+ cond do
+ !Keyword.get(config, :enabled, false) or String.starts_with?(url, Pleroma.Web.base_url()) ->
url
- |> URI.decode()
- |> URI.encode()
- |> Base.url_encode64(@base64_opts)
- sig = :crypto.hmac(:sha, secret, base64)
- sig64 = sig |> Base.url_encode64(@base64_opts)
+ Enum.any?(Pleroma.Config.get([:media_proxy, :whitelist]), fn pattern ->
+ String.equivalent?(domain, pattern)
+ end) ->
+ url
- build_url(sig64, base64, filename(url))
+ true ->
+ encode_url(url)
end
end
+ def encode_url(url) do
+ secret = Application.get_env(:pleroma, Pleroma.Web.Endpoint)[:secret_key_base]
+
+ # Must preserve `%2F` for compatibility with S3
+ # https://git.pleroma.social/pleroma/pleroma/issues/580
+ replacement = get_replacement(url, ":2F:")
+
+ # The URL is url-decoded and encoded again to ensure it is correctly encoded and not twice.
+ base64 =
+ url
+ |> String.replace("%2F", replacement)
+ |> URI.decode()
+ |> URI.encode()
+ |> String.replace(replacement, "%2F")
+ |> Base.url_encode64(@base64_opts)
+
+ sig = :crypto.hmac(:sha, secret, base64)
+ sig64 = sig |> Base.url_encode64(@base64_opts)
+
+ build_url(sig64, base64, filename(url))
+ end
+
def decode_url(sig, url) do
secret = Application.get_env(:pleroma, Pleroma.Web.Endpoint)[:secret_key_base]
sig = Base.url_decode64!(sig, @base64_opts)
@@ -60,4 +78,12 @@ defmodule Pleroma.Web.MediaProxy do
|> Enum.filter(fn value -> value end)
|> Path.join()
end
+
+ defp get_replacement(url, replacement) do
+ if String.contains?(url, replacement) do
+ get_replacement(url, replacement <> replacement)
+ else
+ replacement
+ end
+ end
end