Merge branch 'docs/kyclos' into 'develop'

[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 05e935f2c5b434ad8ebd12c02f69b89155993567..b042739799d78933702f30c36842ec2ce69c37b4 100644 (file)
--- a/lib/pleroma/plugs/http_security_plug.ex
+++ b/lib/pleroma/plugs/http_security_plug.ex
@@ -6,6 +6,8 @@ defmodule Pleroma.Plugs.HTTPSecurityPlug do
   alias Pleroma.Config
   import Plug.Conn
 
+  require Logger
+
   def init(opts), do: opts
 
   def call(conn, _options) do
@@ -20,8 +22,9 @@ 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"},
@@ -30,12 +33,45 @@ 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 Pleroma.Config.get(:env) == :dev do
+        connect_src <> " http://localhost:3035/"
+      else
+        connect_src
+      end
+
+    script_src =
+      if Pleroma.Config.get(:env) == :dev do
+        "script-src 'self' 'unsafe-eval'"
+      else
+        "script-src 'self'"
+      end
 
-    [
+    main_part = [
       "default-src 'none'",
       "base-uri 'self'",
       "frame-ancestors 'none'",
@@ -43,18 +79,64 @@ defmodule Pleroma.Plugs.HTTPSecurityPlug do
       "media-src 'self' https:",
       "style-src 'self' 'unsafe-inline'",
       "font-src 'self'",
-      "connect-src 'self' " <> String.replace(Pleroma.Web.Endpoint.static_url(), "http", "ws"),
       "manifest-src 'self'",
-      if Mix.env() == :dev do
-        "script-src 'self' 'unsafe-eval'"
-      end,
-      if scheme == "https" do
-        "upgrade-insecure-requests"
-      end
+      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
 
+  def warn_if_disabled do
+    unless Config.get([:http_security, :enabled]) do
+      Logger.warn("
+                                 .i;;;;i.
+                               iYcviii;vXY:
+                             .YXi       .i1c.
+                            .YC.     .    in7.
+                           .vc.   ......   ;1c.
+                           i7,   ..        .;1;
+                          i7,   .. ...      .Y1i
+                         ,7v     .6MMM@;     .YX,
+                        .7;.   ..IMMMMMM1     :t7.
+                       .;Y.     ;$MMMMMM9.     :tc.
+                       vY.   .. .nMMM@MMU.      ;1v.
+                      i7i   ...  .#MM@M@C. .....:71i
+                     it:   ....   $MMM@9;.,i;;;i,;tti
+                    :t7.  .....   0MMMWv.,iii:::,,;St.
+                   .nC.   .....   IMMMQ..,::::::,.,czX.
+                  .ct:   ....... .ZMMMI..,:::::::,,:76Y.
+                  c2:   ......,i..Y$M@t..:::::::,,..inZY
+                 vov   ......:ii..c$MBc..,,,,,,,,,,..iI9i
+                i9Y   ......iii:..7@MA,..,,,,,,,,,....;AA:
+               iIS.  ......:ii::..;@MI....,............;Ez.
+              .I9.  ......:i::::...8M1..................C0z.
+             .z9;  ......:i::::,.. .i:...................zWX.
+             vbv  ......,i::::,,.      ................. :AQY
+            c6Y.  .,...,::::,,..:t0@@QY. ................ :8bi
+           :6S. ..,,...,:::,,,..EMMMMMMI. ............... .;bZ,
+          :6o,  .,,,,..:::,,,..i#MMMMMM#v.................  YW2.
+         .n8i ..,,,,,,,::,,,,.. tMMMMM@C:.................. .1Wn
+         7Uc. .:::,,,,,::,,,,..   i1t;,..................... .UEi
+         7C...::::::::::::,,,,..        ....................  vSi.
+         ;1;...,,::::::,.........       ..................    Yz:
+          v97,.........                                     .voC.
+           izAotX7777777777777777777777777777777777777777Y7n92:
+             .;CoIIIIIUAA666666699999ZZZZZZZZZZZZZZZZZZZZ6ov.
+
+HTTP Security is disabled. Please re-enable it to prevent users from attacking
+your instance and your users via malicious posts:
+
+      config :pleroma, :http_security, enabled: true
+      ")
+    end
+  end
+
   defp maybe_send_sts_header(conn, true) do
     max_age_sts = Config.get([:http_security, :sts_max_age])
     max_age_ct = Config.get([:http_security, :ct_max_age])