152 lines
5.0 KiB
Elixir
152 lines
5.0 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Plugs.HTTPSecurityPlug do
|
|
alias Pleroma.Config
|
|
import Plug.Conn
|
|
|
|
require Logger
|
|
|
|
def init(opts), do: opts
|
|
|
|
def call(conn, _options) do
|
|
if Config.get([:http_security, :enabled]) do
|
|
conn
|
|
|> merge_resp_headers(headers())
|
|
|> maybe_send_sts_header(Config.get([:http_security, :sts]))
|
|
else
|
|
conn
|
|
end
|
|
end
|
|
|
|
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"},
|
|
{"x-content-type-options", "nosniff"},
|
|
{"referrer-policy", referrer_policy},
|
|
{"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'",
|
|
"img-src 'self' data: blob: https:",
|
|
"media-src 'self' https:",
|
|
"style-src 'self' 'unsafe-inline'",
|
|
"font-src 'self'",
|
|
"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
|
|
|
|
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])
|
|
|
|
merge_resp_headers(conn, [
|
|
{"strict-transport-security", "max-age=#{max_age_sts}; includeSubDomains"},
|
|
{"expect-ct", "enforce, max-age=#{max_age_ct}"}
|
|
])
|
|
end
|
|
|
|
defp maybe_send_sts_header(conn, _), do: conn
|
|
end
|