MediaProxy whitelist setting now supports hosts with scheme

[akkoma] / lib / pleroma / web / media_proxy / media_proxy.ex

diff --git a/lib/pleroma/web/media_proxy/media_proxy.ex b/lib/pleroma/web/media_proxy/media_proxy.ex
index a661e9bb7153cf6f2c02b672bae88b06f5b481de..dfbfcea6bc74620504e9a0b339d8ca315b43e066 100644 (file)
--- a/lib/pleroma/web/media_proxy/media_proxy.ex
+++ b/lib/pleroma/web/media_proxy/media_proxy.ex
@@ -1,24 +1,58 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MediaProxy do
   alias Pleroma.Config
+  alias Pleroma.Upload
   alias Pleroma.Web
+  alias Pleroma.Web.MediaProxy.Invalidation
 
   @base64_opts [padding: false]
 
+  @spec in_banned_urls(String.t()) :: boolean()
+  def in_banned_urls(url), do: elem(Cachex.exists?(:banned_urls_cache, url(url)), 1)
+
+  def remove_from_banned_urls(urls) when is_list(urls) do
+    Cachex.execute!(:banned_urls_cache, fn cache ->
+      Enum.each(Invalidation.prepare_urls(urls), &Cachex.del(cache, &1))
+    end)
+  end
+
+  def remove_from_banned_urls(url) when is_binary(url) do
+    Cachex.del(:banned_urls_cache, url(url))
+  end
+
+  def put_in_banned_urls(urls) when is_list(urls) do
+    Cachex.execute!(:banned_urls_cache, fn cache ->
+      Enum.each(Invalidation.prepare_urls(urls), &Cachex.put(cache, &1, true))
+    end)
+  end
+
+  def put_in_banned_urls(url) when is_binary(url) do
+    Cachex.put(:banned_urls_cache, url(url), true)
+  end
+
   def url(url) when is_nil(url) or url == "", do: nil
   def url("/" <> _ = url), do: url
 
   def url(url) do
-    if disabled?() or local?(url) or whitelisted?(url) do
+    if disabled?() or not url_proxiable?(url) do
       url
     else
       encode_url(url)
     end
   end
 
+  @spec url_proxiable?(String.t()) :: boolean()
+  def url_proxiable?(url) do
+    if local?(url) or whitelisted?(url) do
+      false
+    else
+      true
+    end
+  end
+
   defp disabled?, do: !Config.get([:media_proxy, :enabled], false)
 
   defp local?(url), do: String.starts_with?(url, Pleroma.Web.base_url())
@@ -26,11 +60,28 @@ defmodule Pleroma.Web.MediaProxy do
   defp whitelisted?(url) do
     %{host: domain} = URI.parse(url)
 
-    Enum.any?(Config.get([:media_proxy, :whitelist]), fn pattern ->
-      String.equivalent?(domain, pattern)
-    end)
+    mediaproxy_whitelist_domains =
+      [:media_proxy, :whitelist]
+      |> Config.get()
+      |> Enum.map(&maybe_get_domain_from_url/1)
+
+    whitelist_domains =
+      if base_url = Config.get([Upload, :base_url]) do
+        %{host: base_domain} = URI.parse(base_url)
+        [base_domain | mediaproxy_whitelist_domains]
+      else
+        mediaproxy_whitelist_domains
+      end
+
+    domain in whitelist_domains
   end
 
+  defp maybe_get_domain_from_url("http" <> _ = url) do
+    URI.parse(url).host
+  end
+
+  defp maybe_get_domain_from_url(domain), do: domain
+
   def encode_url(url) do
     base64 = Base.url_encode64(url, @base64_opts)
 
@@ -61,7 +112,7 @@ defmodule Pleroma.Web.MediaProxy do
 
   def build_url(sig_base64, url_base64, filename \\ nil) do
     [
-      Pleroma.Config.get([:media_proxy, :base_url], Web.base_url()),
+      Config.get([:media_proxy, :base_url], Web.base_url()),
       "proxy",
       sig_base64,
       url_base64,