add report uri and report to

[akkoma] / lib / pleroma / plugs / http_security_plug.ex

diff --git a/lib/pleroma/plugs/http_security_plug.ex b/lib/pleroma/plugs/http_security_plug.ex
index 960c7f6bfb25774d05667e6a461f863f1903e433..485ddfbc72ef03263199aaa4d4abd6c16829daa1 100644 (file)
--- a/lib/pleroma/plugs/http_security_plug.ex
+++ b/lib/pleroma/plugs/http_security_plug.ex
@@ -1,14 +1,18 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Plugs.HTTPSecurityPlug do
   alias Pleroma.Config
   import Plug.Conn
 
   def init(opts), do: opts
 
-  def call(conn, options) do
+  def call(conn, _options) do
     if Config.get([:http_security, :enabled]) do
-      conn =
-        merge_resp_headers(conn, headers())
-        |> maybe_send_sts_header(Config.get([:http_security, :sts]))
+      conn
+      |> merge_resp_headers(headers())
+      |> maybe_send_sts_header(Config.get([:http_security, :sts]))
     else
       conn
     end
@@ -16,8 +20,9 @@ defmodule Pleroma.Plugs.HTTPSecurityPlug do
 
   defp headers do
     referrer_policy = Config.get([:http_security, :referrer_policy])
+    report_uri = Config.get([:http_security, :report_uri])
 
-    [
+    headers = [
       {"x-xss-protection", "1; mode=block"},
       {"x-permitted-cross-domain-policies", "none"},
       {"x-frame-options", "DENY"},
@@ -26,22 +31,62 @@ defmodule Pleroma.Plugs.HTTPSecurityPlug do
       {"x-download-options", "noopen"},
       {"content-security-policy", csp_string() <> ";"}
     ]
+
+    if report_uri do
+      report_group = %{
+        "group" => "csp-endpoint",
+        "max-age" => 10_886_400,
+        "endpoints" => [
+          %{"url" => report_uri}
+        ]
+      }
+
+      headers ++ [{"reply-to", Jason.encode!(report_group)}]
+    else
+      headers
+    end
   end
 
   defp csp_string do
-    [
+    scheme = Config.get([Pleroma.Web.Endpoint, :url])[:scheme]
+    static_url = Pleroma.Web.Endpoint.static_url()
+    websocket_url = Pleroma.Web.Endpoint.websocket_url()
+    report_uri = Config.get([:http_security, :report_uri])
+
+    connect_src = "connect-src 'self' #{static_url} #{websocket_url}"
+
+    connect_src =
+      if Mix.env() == :dev do
+        connect_src <> " http://localhost:3035/"
+      else
+        connect_src
+      end
+
+    script_src =
+      if Mix.env() == :dev do
+        "script-src 'self' 'unsafe-eval'"
+      else
+        "script-src 'self'"
+      end
+
+    main_part = [
       "default-src 'none'",
       "base-uri 'self'",
-      "form-action *",
       "frame-ancestors 'none'",
       "img-src 'self' data: https:",
       "media-src 'self' https:",
       "style-src 'self' 'unsafe-inline'",
       "font-src 'self'",
-      "script-src 'self'",
-      "connect-src 'self' " <> String.replace(Pleroma.Web.Endpoint.static_url(), "http", "ws"),
-      "upgrade-insecure-requests"
+      "manifest-src 'self'",
+      connect_src,
+      script_src
     ]
+
+    report = if report_uri, do: ["report-uri #{report_uri}; report-to csp-endpoint"], else: []
+
+    insecure = if scheme == "https", do: ["upgrade-insecure-requests"], else: []
+
+    (main_part ++ report ++ insecure)
     |> Enum.join("; ")
   end