-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local log = require "util.logger".init("certmanager");
local ssl = ssl;
local ssl_newcontext = ssl and ssl.newcontext;
+local new_config = require"util.sslconfig".new;
local tostring = tostring;
local pairs = pairs;
+local type = type;
+local io_open = io.open;
+local select = select;
local prosody = prosody;
-local resolve_path = configmanager.resolve_relative_path;
+local resolve_path = require"util.paths".resolve_relative_path;
local config_path = prosody.paths.config;
local luasec_has_noticket, luasec_has_verifyext, luasec_has_no_compression;
-- Global SSL options if not overridden per-host
local global_ssl_config = configmanager.get("*", "ssl");
+-- Built-in defaults
local core_defaults = {
capath = "/etc/ssl/certs";
- protocol = "sslv23";
+ protocol = "tlsv1+";
verify = (ssl and ssl.x509 and { "peer", "client_once", }) or "none";
- options = { "no_sslv2", luasec_has_noticket and "no_ticket" or nil };
+ options = {
+ cipher_server_preference = true;
+ no_ticket = luasec_has_noticket;
+ no_compression = luasec_has_no_compression and configmanager.get("*", "ssl_compression") ~= true;
+ -- Has no_compression? Then it has these too...
+ single_dh_use = luasec_has_no_compression;
+ single_ecdh_use = luasec_has_no_compression;
+ };
verifyext = { "lsec_continue", "lsec_ignore_purpose" };
curve = "secp384r1";
+ ciphers = "HIGH+kEDH:HIGH+kEECDH:HIGH:!PSK:!SRP:!3DES:!aNULL";
}
local path_options = { -- These we pass through resolve_path()
- key = true, certificate = true, cafile = true, capath = true
+ key = true, certificate = true, cafile = true, capath = true, dhparam = true
}
if ssl and not luasec_has_verifyext and ssl.x509 then
end
end
-if luasec_has_no_compression and configmanager.get("*", "ssl_compression") ~= true then
- core_defaults.options[#core_defaults.options+1] = "no_compression";
-end
-
-function create_context(host, mode, user_ssl_config)
- user_ssl_config = user_ssl_config or {}
- user_ssl_config.mode = mode;
-
+function create_context(host, mode, ...)
if not ssl then return nil, "LuaSec (required for encryption) was not found"; end
- if global_ssl_config then
- for option,default_value in pairs(global_ssl_config) do
- if not user_ssl_config[option] then
- user_ssl_config[option] = default_value;
- end
- end
+ local cfg = new_config();
+ cfg:apply(core_defaults);
+ cfg:apply(global_ssl_config);
+ cfg:apply({
+ mode = mode,
+ -- We can't read the password interactively when daemonized
+ password = function() log("error", "Encrypted certificate for %s requires 'ssl' 'password' to be set in config", host); end;
+ });
+
+ for i = select('#', ...), 1, -1 do
+ cfg:apply(select(i, ...));
end
- for option,default_value in pairs(core_defaults) do
- if not user_ssl_config[option] then
- user_ssl_config[option] = default_value;
- end
+ local user_ssl_config = cfg:final();
+
+ if mode == "server" then
+ if not user_ssl_config.key then return nil, "No key present in SSL/TLS configuration for "..host; end
+ if not user_ssl_config.certificate then return nil, "No certificate present in SSL/TLS configuration for "..host; end
end
- user_ssl_config.password = user_ssl_config.password or function() log("error", "Encrypted certificate for %s requires 'ssl' 'password' to be set in config", host); end;
+
for option in pairs(path_options) do
- user_ssl_config[option] = user_ssl_config[option] and resolve_path(config_path, user_ssl_config[option]);
+ if type(user_ssl_config[option]) == "string" then
+ user_ssl_config[option] = resolve_path(config_path, user_ssl_config[option]);
+ end
end
- if not user_ssl_config.key then return nil, "No key present in SSL/TLS configuration for "..host; end
- if not user_ssl_config.certificate then return nil, "No certificate present in SSL/TLS configuration for "..host; end
+ -- LuaSec expects dhparam to be a callback that takes two arguments.
+ -- We ignore those because it is mostly used for having a separate
+ -- set of params for EXPORT ciphers, which we don't have by default.
+ if type(user_ssl_config.dhparam) == "string" then
+ local f, err = io_open(user_ssl_config.dhparam);
+ if not f then return nil, "Could not open DH parameters: "..err end
+ local dhparam = f:read("*a");
+ f:close();
+ user_ssl_config.dhparam = function() return dhparam; end
+ end
local ctx, err = ssl_newcontext(user_ssl_config);
log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
end
end
- return ctx, err;
+ return ctx, err, user_ssl_config;
end
function reload_ssl_config()
global_ssl_config = configmanager.get("*", "ssl");
+ if luasec_has_no_compression then
+ core_defaults.options.no_compression = configmanager.get("*", "ssl_compression") ~= true;
+ end
end
prosody.events.add_handler("config-reloaded", reload_ssl_config);
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