-- 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 ssl_newcontext = ssl and ssl.newcontext;
local tostring = tostring;
+local pairs = pairs;
local type = type;
local io_open = io.open;
module "certmanager"
-- Global SSL options if not overridden per-host
-local default_ssl_config = configmanager.get("*", "ssl");
-local default_capath = "/etc/ssl/certs";
-local default_verify = (ssl and ssl.x509 and { "peer", "client_once", }) or "none";
-local default_options = { "no_sslv2", "cipher_server_preference", luasec_has_noticket and "no_ticket" or nil };
-local default_verifyext = { "lsec_continue", "lsec_ignore_purpose" };
+local global_ssl_config = configmanager.get("*", "ssl");
+
+local core_defaults = {
+ capath = "/etc/ssl/certs";
+ protocol = "sslv23";
+ verify = (ssl and ssl.x509 and { "peer", "client_once", }) or "none";
+ options = { "no_sslv2", "no_sslv3", "cipher_server_preference", luasec_has_noticket and "no_ticket" or nil };
+ 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, dhparam = true
+}
if ssl and not luasec_has_verifyext and ssl.x509 then
-- COMPAT mw/luasec-hg
- for i=1,#default_verifyext do -- Remove lsec_ prefix
- default_verify[#default_verify+1] = default_verifyext[i]:sub(6);
+ for i=1,#core_defaults.verifyext do -- Remove lsec_ prefix
+ core_defaults.verify[#core_defaults.verify+1] = core_defaults.verifyext[i]:sub(6);
end
end
-if luasec_has_no_compression and configmanager.get("*", "ssl_compression") ~= true then
- default_options[#default_options+1] = "no_compression";
-end
if luasec_has_no_compression then -- Has no_compression? Then it has these too...
- default_options[#default_options+1] = "single_dh_use";
- default_options[#default_options+1] = "single_ecdh_use";
+ core_defaults.options[#core_defaults.options+1] = "single_dh_use";
+ core_defaults.options[#core_defaults.options+1] = "single_ecdh_use";
+ if configmanager.get("*", "ssl_compression") ~= true then
+ core_defaults.options[#core_defaults.options+1] = "no_compression";
+ end
end
function create_context(host, mode, user_ssl_config)
- user_ssl_config = user_ssl_config or default_ssl_config;
+ user_ssl_config = user_ssl_config or {}
+ user_ssl_config.mode = mode;
if not ssl then return nil, "LuaSec (required for encryption) was not found"; end
- if not user_ssl_config then return nil, "No SSL/TLS configuration present for "..host; end
-
- local ssl_config = {
- mode = mode;
- protocol = user_ssl_config.protocol or "sslv23";
- key = resolve_path(config_path, user_ssl_config.key);
- password = user_ssl_config.password or function() log("error", "Encrypted certificate for %s requires 'ssl' 'password' to be set in config", host); end;
- certificate = resolve_path(config_path, user_ssl_config.certificate);
- capath = resolve_path(config_path, user_ssl_config.capath or default_capath);
- cafile = resolve_path(config_path, user_ssl_config.cafile);
- verify = user_ssl_config.verify or default_verify;
- verifyext = user_ssl_config.verifyext or default_verifyext;
- options = user_ssl_config.options or default_options;
- depth = user_ssl_config.depth;
- curve = user_ssl_config.curve or "secp384r1";
- ciphers = user_ssl_config.ciphers or "HIGH+kEDH:HIGH+kEECDH:HIGH:!PSK:!SRP:!3DES:!aNULL";
- dhparam = user_ssl_config.dhparam;
- };
+
+ 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
+ end
+ for option,default_value in pairs(core_defaults) do
+ if not user_ssl_config[option] then
+ user_ssl_config[option] = default_value;
+ 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
+ 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(ssl_config.dhparam) == "string" then
- local f, err = io_open(resolve_path(config_path, ssl_config.dhparam));
+ 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();
- ssl_config.dhparam = function() return dhparam; end
+ user_ssl_config.dhparam = function() return dhparam; end
end
- local ctx, err = ssl_newcontext(ssl_config);
+ local ctx, err = ssl_newcontext(user_ssl_config);
- -- COMPAT: LuaSec 0.4.1 ignores the cipher list from the config, so we have to take
- -- care of it ourselves...
- if ctx and ssl_config.ciphers then
+ -- COMPAT Older LuaSec ignores the cipher list from the config, so we have to take care
+ -- of it ourselves (W/A for #x)
+ if ctx and user_ssl_config.ciphers then
local success;
- success, err = ssl.context.setcipher(ctx, ssl_config.ciphers);
+ success, err = ssl.context.setcipher(ctx, user_ssl_config.ciphers);
if not success then ctx = nil; end
end
local file = err:match("^error loading (.-) %(");
if file then
if file == "private key" then
- file = ssl_config.key or "your private key";
+ file = user_ssl_config.key or "your private key";
elseif file == "certificate" then
- file = ssl_config.certificate or "your certificate file";
+ file = user_ssl_config.certificate or "your certificate file";
end
local reason = err:match("%((.+)%)$") or "some reason";
if reason == "Permission denied" then
end
function reload_ssl_config()
- default_ssl_config = configmanager.get("*", "ssl");
+ global_ssl_config = configmanager.get("*", "ssl");
end
prosody.events.add_handler("config-reloaded", reload_ssl_config);
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