def call(conn, _options) do
if Config.get([:http_security, :enabled]) do
conn
- |> merge_resp_headers(headers())
+ |> merge_resp_headers(headers(conn))
|> maybe_send_sts_header(Config.get([:http_security, :sts]))
else
conn
end
end
- def headers do
+ @spec headers(Plug.Conn.t()) :: [{String.t(), String.t()}]
+ def headers(conn) do
referrer_policy = Config.get([:http_security, :referrer_policy])
report_uri = Config.get([:http_security, :report_uri])
custom_http_frontend_headers = custom_http_frontend_headers()
{"x-frame-options", "DENY"},
{"x-content-type-options", "nosniff"},
{"referrer-policy", referrer_policy},
- {"content-security-policy", csp_string()},
+ {"content-security-policy", csp_string(conn)},
{"permissions-policy", "interest-cohort=()"}
]
"default-src 'none'",
"base-uri 'none'",
"frame-ancestors 'none'",
- "style-src 'self' 'unsafe-inline'",
- "font-src 'self'",
"manifest-src 'self'"
]
@csp_start [Enum.join(static_csp_rules, ";") <> ";"]
- defp csp_string do
+ defp csp_string(conn) 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])
-
+ %{assigns: %{csp_nonce: nonce}} = conn
+ nonce_tag = "nonce-" <> nonce
img_src = "img-src 'self' data: blob:"
media_src = "media-src 'self'"
["connect-src 'self' blob: ", static_url, ?\s, websocket_url]
end
+ style_src = "style-src 'self' '#{nonce_tag}'"
+ font_src = "font-src 'self' '#{nonce_tag}' data:"
+
script_src =
if Config.get(:env) == :dev do
- "script-src 'self' 'unsafe-eval'"
+ "script-src 'self' 'unsafe-eval' '#{nonce_tag}'"
else
- "script-src 'self'"
+ "script-src 'self' '#{nonce_tag}'"
end
report = if report_uri, do: ["report-uri ", report_uri, ";report-to csp-endpoint"]
|> add_csp_param(media_src)
|> add_csp_param(connect_src)
|> add_csp_param(script_src)
+ |> add_csp_param(font_src)
+ |> add_csp_param(style_src)
|> add_csp_param(insecure)
|> add_csp_param(report)
|> :erlang.iolist_to_binary()