2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local configmanager = require "core.configmanager";
10 local log = require "util.logger".init("certmanager");
12 local ssl_newcontext = ssl and ssl.newcontext;
14 local tostring = tostring;
17 local prosody = prosody;
18 local resolve_path = configmanager.resolve_relative_path;
19 local config_path = prosody.paths.config;
21 local luasec_has_noticket, luasec_has_verifyext, luasec_has_no_compression;
23 local luasec_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
24 luasec_has_noticket = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=4;
25 luasec_has_verifyext = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
26 luasec_has_no_compression = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
31 -- Global SSL options if not overridden per-host
32 local global_ssl_config = configmanager.get("*", "ssl");
34 local core_defaults = {
35 capath = "/etc/ssl/certs";
37 verify = (ssl and ssl.x509 and { "peer", "client_once", }) or "none";
38 options = { "no_sslv2", luasec_has_noticket and "no_ticket" or nil };
39 verifyext = { "lsec_continue", "lsec_ignore_purpose" };
41 ciphers = "HIGH:!DSS:!aNULL@STRENGTH";
43 local path_options = { -- These we pass through resolve_path()
44 key = true, certificate = true, cafile = true, capath = true
47 if ssl and not luasec_has_verifyext and ssl.x509 then
48 -- COMPAT mw/luasec-hg
49 for i=1,#core_defaults.verifyext do -- Remove lsec_ prefix
50 core_defaults.verify[#core_defaults.verify+1] = core_defaults.verifyext[i]:sub(6);
54 if luasec_has_no_compression and configmanager.get("*", "ssl_compression") ~= true then
55 core_defaults.options[#core_defaults.options+1] = "no_compression";
58 function create_context(host, mode, user_ssl_config)
59 user_ssl_config = user_ssl_config or {}
60 user_ssl_config.mode = mode;
62 if not ssl then return nil, "LuaSec (required for encryption) was not found"; end
64 if global_ssl_config then
65 for option,default_value in pairs(global_ssl_config) do
66 if not user_ssl_config[option] then
67 user_ssl_config[option] = default_value;
71 for option,default_value in pairs(core_defaults) do
72 if not user_ssl_config[option] then
73 user_ssl_config[option] = default_value;
76 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;
77 for option in pairs(path_options) do
78 user_ssl_config[option] = user_ssl_config[option] and resolve_path(config_path, user_ssl_config[option]);
81 if not user_ssl_config.key then return nil, "No key present in SSL/TLS configuration for "..host; end
82 if not user_ssl_config.certificate then return nil, "No certificate present in SSL/TLS configuration for "..host; end
84 local ctx, err = ssl_newcontext(user_ssl_config);
86 -- COMPAT Older LuaSec ignores the cipher list from the config, so we have to take care
87 -- of it ourselves (W/A for #x)
88 if ctx and user_ssl_config.ciphers then
90 success, err = ssl.context.setcipher(ctx, user_ssl_config.ciphers);
91 if not success then ctx = nil; end
95 err = err or "invalid ssl config"
96 local file = err:match("^error loading (.-) %(");
98 if file == "private key" then
99 file = user_ssl_config.key or "your private key";
100 elseif file == "certificate" then
101 file = user_ssl_config.certificate or "your certificate file";
103 local reason = err:match("%((.+)%)$") or "some reason";
104 if reason == "Permission denied" then
105 reason = "Check that the permissions allow Prosody to read this file.";
106 elseif reason == "No such file or directory" then
107 reason = "Check that the path is correct, and the file exists.";
108 elseif reason == "system lib" then
109 reason = "Previous error (see logs), or other system error.";
110 elseif reason == "(null)" or not reason then
111 reason = "Check that the file exists and the permissions are correct";
113 reason = "Reason: "..tostring(reason):lower();
115 log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host);
117 log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
123 function reload_ssl_config()
124 global_ssl_config = configmanager.get("*", "ssl");
127 prosody.events.add_handler("config-reloaded", reload_ssl_config);