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core/certmanager.lua @ 6239:a791dd781238
plugins/muc/mod_muc: Remove support for `host_session.muc`
author | daurnimator <quae@daurnimator.com> |
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date | Tue, 29 Apr 2014 14:50:13 -0400 |
parent | 5922:dd11480ecd47 |
child | 6073:4a1fdd72e98a |
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-- 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 tostring = tostring; local pairs = pairs; 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" -- Global SSL options if not overridden per-host 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,#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 then -- Has no_compression? Then it has these too... 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 {} user_ssl_config.mode = 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 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(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 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 = user_ssl_config.key or "your private key"; elseif file == "certificate" then file = user_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 reason = "Reason: "..tostring(reason):lower(); end 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 ctx, err; end function reload_ssl_config() global_ssl_config = configmanager.get("*", "ssl"); end prosody.events.add_handler("config-reloaded", reload_ssl_config); return _M;