+-- 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 configmanager = require "core.configmanager";
local log = require "util.logger".init("certmanager");
local ssl = ssl;
local ssl_newcontext = ssl and ssl.newcontext;
-local setmetatable = setmetatable;
+local tostring = tostring;
+local type = type;
+local io_open = io.open;
local prosody = prosody;
+local resolve_path = configmanager.resolve_relative_path;
+local config_path = prosody.paths.config;
+
+local luasec_has_noticket, luasec_has_verifyext, luasec_has_no_compression;
+if ssl then
+ local luasec_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
+ luasec_has_noticket = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=4;
+ luasec_has_verifyext = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
+ luasec_has_no_compression = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
+end
module "certmanager"
--- These are the defaults if not overridden in the config
-local default_ssl_ctx = { mode = "client", protocol = "sslv23", capath = "/etc/ssl/certs", verify = "none", options = "no_sslv2"; };
-local default_ssl_ctx_in = { mode = "server", protocol = "sslv23", capath = "/etc/ssl/certs", verify = "none", options = "no_sslv2"; };
+-- 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", "no_sslv3", "cipher_server_preference", luasec_has_noticket and "no_ticket" or nil };
+local default_verifyext = { "lsec_continue", "lsec_ignore_purpose" };
-local default_ssl_ctx_mt = { __index = default_ssl_ctx };
-local default_ssl_ctx_in_mt = { __index = default_ssl_ctx_in };
+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);
+ end
+end
+if luasec_has_no_compression and configmanager.get("*", "ssl_compression") ~= true then
+ default_options[#default_options+1] = "no_compression";
+end
--- Global SSL options if not overridden per-host
-local default_ssl_config = configmanager.get("*", "core", "ssl");
-
-function create_context(host, mode, config)
- local ssl_config = config and config.core.ssl or default_ssl_config;
- if ssl and ssl_config then
- local ctx, err = ssl_newcontext(setmetatable(ssl_config, mode == "client" and default_ssl_ctx_mt or default_ssl_ctx_in_mt));
- 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";
- elseif file == "certificate" then
- file = ssl_config.certificate or "your certificate file";
- end
- local reason = err:match("%((.+)%)$") or "some reason";
- if reason == "Permission denied" then
- reason = "Check that the permissions allow Prosody to read this file.";
- elseif reason == "No such file or directory" then
- reason = "Check that the path is correct, and the file exists.";
- elseif reason == "system lib" then
- reason = "Previous error (see logs), or other system error.";
- else
- reason = "Reason: "..tostring(reason or "unknown"):lower();
- end
- log("error", "SSL/TLS: Failed to load %s: %s", file, reason);
+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";
+end
+
+function create_context(host, mode, user_ssl_config)
+ user_ssl_config = user_ssl_config 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 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;
+ };
+
+ -- 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 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
+ end
+
+ local ctx, err = ssl_newcontext(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
+ local success;
+ success, err = ssl.context.setcipher(ctx, ssl_config.ciphers);
+ if not success then ctx = nil; end
+ end
+
+ 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";
+ elseif file == "certificate" then
+ file = ssl_config.certificate or "your certificate file";
+ end
+ local reason = err:match("%((.+)%)$") or "some reason";
+ if reason == "Permission denied" then
+ reason = "Check that the permissions allow Prosody to read this file.";
+ elseif reason == "No such file or directory" then
+ reason = "Check that the path is correct, and the file exists.";
+ elseif reason == "system lib" then
+ reason = "Previous error (see logs), or other system error.";
+ elseif reason == "(null)" or not reason then
+ reason = "Check that the file exists and the permissions are correct";
else
- log("error", "SSL/TLS: Error initialising for host %s: %s", host, err );
+ reason = "Reason: "..tostring(reason):lower();
end
- ssl = false
- end
- return ctx, err;
+ log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host);
+ else
+ log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
+ end
end
- return nil;
+ return ctx, err;
end
function reload_ssl_config()
- default_ssl_config = config.get("*", "core", "ssl");
+ default_ssl_config = configmanager.get("*", "ssl");
end
prosody.events.add_handler("config-reloaded", reload_ssl_config);
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