-- 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 softreq = require"util.dependencies".softreq;
+local ssl = softreq"ssl";
+if not ssl then
+ return {
+ create_context = function ()
+ return nil, "LuaSec (required for encryption) was not found";
+ end;
+ reload_ssl_config = function () end;
+ }
+end
+
local configmanager = require "core.configmanager";
local log = require "util.logger".init("certmanager");
-local ssl = ssl;
-local ssl_newcontext = ssl and ssl.newcontext;
+local ssl_context = ssl.context or softreq"ssl.context";
+local ssl_x509 = ssl.x509 or softreq"ssl.x509";
+local ssl_newcontext = ssl.newcontext;
+local new_config = require"util.sslconfig".new;
-local setmetatable, tostring = setmetatable, tostring;
+local tostring = tostring;
+local pairs = pairs;
+local type = type;
+local io_open = io.open;
+local select = select;
local prosody = prosody;
-local resolve_path = prosody.resolve_relative_path;
+local resolve_path = require"util.paths".resolve_relative_path;
local config_path = prosody.paths.config;
+local luasec_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
+local luasec_version = luasec_major * 100 + luasec_minor;
+local luasec_has = {
+ -- TODO If LuaSec ever starts exposing these things itself, use that instead
+ cipher_server_preference = luasec_version >= 2;
+ no_ticket = luasec_version >= 4;
+ no_compression = luasec_version >= 5;
+ single_dh_use = luasec_version >= 2;
+ single_ecdh_use = luasec_version >= 2;
+};
+
module "certmanager"
-- Global SSL options if not overridden per-host
-local default_ssl_config = configmanager.get("*", "core", "ssl");
-local default_capath = "/etc/ssl/certs";
-
-function create_context(host, mode, config)
- local user_ssl_config = config and config.core.ssl or default_ssl_config;
-
- 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;
- 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 "none";
- options = user_ssl_config.options or "no_sslv2";
- ciphers = user_ssl_config.ciphers;
- depth = user_ssl_config.depth;
+local global_ssl_config = configmanager.get("*", "ssl");
+
+-- Built-in defaults
+local core_defaults = {
+ capath = "/etc/ssl/certs";
+ depth = 9;
+ protocol = "tlsv1+";
+ verify = (ssl_x509 and { "peer", "client_once", }) or "none";
+ options = {
+ cipher_server_preference = luasec_has.cipher_server_preference;
+ no_ticket = luasec_has.no_ticket;
+ no_compression = luasec_has.no_compression and configmanager.get("*", "ssl_compression") ~= true;
+ single_dh_use = luasec_has.single_dh_use;
+ single_ecdh_use = luasec_has.single_ecdh_use;
};
+ 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 luasec_version < 5 and ssl_x509 then
+ -- COMPAT mw/luasec-hg
+ 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
+
+function create_context(host, mode, ...)
+ 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
+ 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
+
+ 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
+
+ -- 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);
+
+ -- 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, user_ssl_config.ciphers);
+ if not success then ctx = nil; end
+ end
- local ctx, err = ssl_newcontext(ssl_config);
if not ctx then
err = err or "invalid ssl config"
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
else
reason = "Reason: "..tostring(reason):lower();
end
- log("error", "SSL/TLS: Failed to load %s: %s", file, reason);
+ log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host);
else
- log("error", "SSL/TLS: Error initialising for host %s: %s", host, err );
+ log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
end
- end
- return ctx, err;
+ end
+ return ctx, err, user_ssl_config;
end
function reload_ssl_config()
- default_ssl_config = configmanager.get("*", "core", "ssl");
+ 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);
projects / prosody.git / blobdiff