1 files changed, 53 insertions, 11 deletions
diff --git a/lib/pleroma/web/media_proxy/media_proxy.ex b/lib/pleroma/web/media_proxy/media_proxy.ex
index b2b524524..e18dd8224 100644
--- a/lib/pleroma/web/media_proxy/media_proxy.ex
+++ b/lib/pleroma/web/media_proxy/media_proxy.ex
@@ -6,20 +6,56 @@ defmodule Pleroma.Web.MediaProxy do
   alias Pleroma.Config
   alias Pleroma.Upload
   alias Pleroma.Web
+  alias Pleroma.Web.MediaProxy.Invalidation
 
   @base64_opts [padding: false]
+  @cache_table :banned_urls_cache
+
+  def cache_table, do: @cache_table
+
+  @spec in_banned_urls(String.t()) :: boolean()
+  def in_banned_urls(url), do: elem(Cachex.exists?(@cache_table, url(url)), 1)
+
+  def remove_from_banned_urls(urls) when is_list(urls) do
+    Cachex.execute!(@cache_table, 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(@cache_table, url(url))
+  end
+
+  def put_in_banned_urls(urls) when is_list(urls) do
+    Cachex.execute!(@cache_table, 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(@cache_table, 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())
@@ -27,22 +63,28 @@ defmodule Pleroma.Web.MediaProxy do
   defp whitelisted?(url) do
     %{host: domain} = URI.parse(url)
 
-    mediaproxy_whitelist = Config.get([:media_proxy, :whitelist])
+    mediaproxy_whitelist_domains =
+      [:media_proxy, :whitelist]
+      |> Config.get()
+      |> Enum.map(&maybe_get_domain_from_url/1)
 
-    upload_base_url_domain =
-      if !is_nil(Config.get([Upload, :base_url])) do
-        [URI.parse(Config.get([Upload, :base_url])).host]
+    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
 
-    whitelist = mediaproxy_whitelist ++ upload_base_url_domain
+    domain in whitelist_domains
+  end
 
-    Enum.any?(whitelist, fn pattern ->
-      String.equivalent?(domain, pattern)
-    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)
 
@@ -73,7 +115,7 @@ 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,