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-rw-r--r--core/certmanager.lua255
1 files changed, 191 insertions, 64 deletions
diff --git a/core/certmanager.lua b/core/certmanager.lua
index 624bd841..dac4baa4 100644
--- a/core/certmanager.lua
+++ b/core/certmanager.lua
@@ -1,97 +1,211 @@
-- 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 stat = require "lfs".attributes;
-local tostring = tostring;
+local tonumber, tostring = tonumber, tostring;
+local pairs = pairs;
+local t_remove = table.remove;
local type = type;
local io_open = io.open;
+local select = select;
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
+local resolve_path = require"util.paths".resolve_relative_path;
+local config_path = prosody.paths.config or ".";
+
+local luasec_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
+local luasec_version = tonumber(luasec_major) * 100 + tonumber(luasec_minor);
+local luasec_has = softreq"ssl.config" or {
+ algorithms = {
+ ec = luasec_version >= 5;
+ };
+ capabilities = {
+ curves_list = luasec_version >= 7;
+ };
+ options = {
+ 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"
+local _ENV = nil;
-- 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 global_ssl_config = configmanager.get("*", "ssl");
-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);
+local global_certificates = configmanager.get("*", "certificates") or "certs";
+
+local crt_try = { "", "/%s.crt", "/%s/fullchain.pem", "/%s.pem", };
+local key_try = { "", "/%s.key", "/%s/privkey.pem", "/%s.pem", };
+
+local function find_cert(user_certs, name)
+ local certs = resolve_path(config_path, user_certs or global_certificates);
+ log("debug", "Searching %s for a key and certificate for %s...", certs, name);
+ for i = 1, #crt_try do
+ local crt_path = certs .. crt_try[i]:format(name);
+ local key_path = certs .. key_try[i]:format(name);
+
+ if stat(crt_path, "mode") == "file" then
+ if key_path:sub(-4) == ".crt" then
+ key_path = key_path:sub(1, -4) .. "key";
+ if stat(key_path, "mode") == "file" then
+ log("debug", "Selecting certificate %s with key %s for %s", crt_path, key_path, name);
+ return { certificate = crt_path, key = key_path };
+ end
+ elseif stat(key_path, "mode") == "file" then
+ log("debug", "Selecting certificate %s with key %s for %s", crt_path, key_path, name);
+ return { certificate = crt_path, key = key_path };
+ end
+ end
end
+ log("debug", "No certificate/key found for %s", name);
end
-if luasec_has_no_compression and configmanager.get("*", "ssl_compression") ~= true then
- default_options[#default_options+1] = "no_compression";
+
+local function find_host_cert(host)
+ if not host then return nil; end
+ return find_cert(configmanager.get(host, "certificate"), host) or find_host_cert(host:match("%.(.+)$"));
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";
+local function find_service_cert(service, port)
+ local cert_config = configmanager.get("*", service.."_certificate");
+ if type(cert_config) == "table" then
+ cert_config = cert_config[port] or cert_config.default;
+ end
+ return find_cert(cert_config, service);
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;
+-- 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.options.cipher_server_preference;
+ no_ticket = luasec_has.options.no_ticket;
+ no_compression = luasec_has.options.no_compression and configmanager.get("*", "ssl_compression") ~= true;
+ single_dh_use = luasec_has.options.single_dh_use;
+ single_ecdh_use = luasec_has.options.single_ecdh_use;
+ };
+ verifyext = { "lsec_continue", "lsec_ignore_purpose" };
+ curve = luasec_has.algorithms.ec and not luasec_has.capabilities.curves_list and "secp384r1";
+ curveslist = {
+ "X25519",
+ "P-384",
+ "P-256",
+ "P-521",
};
+ ciphers = { -- Enabled ciphers in order of preference:
+ "HIGH+kEDH", -- Ephemeral Diffie-Hellman key exchange, if a 'dhparam' file is set
+ "HIGH+kEECDH", -- Ephemeral Elliptic curve Diffie-Hellman key exchange
+ "HIGH", -- Other "High strength" ciphers
+ -- Disabled cipher suites:
+ "!PSK", -- Pre-Shared Key - not used for XMPP
+ "!SRP", -- Secure Remote Password - not used for XMPP
+ "!3DES", -- 3DES - slow and of questionable security
+ "!aNULL", -- Ciphers that does not authenticate the connection
+ };
+}
+
+if luasec_has.curves then
+ for i = #core_defaults.curveslist, 1, -1 do
+ if not luasec_has.curves[ core_defaults.curveslist[i] ] then
+ t_remove(core_defaults.curveslist, i);
+ end
+ end
+else
+ core_defaults.curveslist = nil;
+end
+
+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
+
+local function create_context(host, mode, ...)
+ local cfg = new_config();
+ cfg:apply(core_defaults);
+ local service_name, port = host:match("^(%S+) port (%d+)$");
+ if service_name then
+ cfg:apply(find_service_cert(service_name, tonumber(port)));
+ else
+ cfg:apply(find_host_cert(host));
+ end
+ 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;
+ });
+ cfg:apply(global_ssl_config);
+
+ 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.certificate then return nil, "No certificate present in SSL/TLS configuration for "..host; end
+ if not user_ssl_config.key then return nil, "No key 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]);
+ else
+ user_ssl_config[option] = nil;
+ 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(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
@@ -99,10 +213,13 @@ function create_context(host, mode, user_ssl_config)
err = err or "invalid ssl config"
local file = err:match("^error loading (.-) %(");
if file then
+ local typ;
if file == "private key" then
- file = ssl_config.key or "your private key";
+ typ = file;
+ file = user_ssl_config.key or "your private key";
elseif file == "certificate" then
- file = ssl_config.certificate or "your certificate file";
+ typ = file;
+ file = user_ssl_config.certificate or "your certificate file";
end
local reason = err:match("%((.+)%)$") or "some reason";
if reason == "Permission denied" then
@@ -111,6 +228,8 @@ function create_context(host, mode, user_ssl_config)
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 == "no start line" then
+ reason = "Check that the file contains a "..(typ or file);
elseif reason == "(null)" or not reason then
reason = "Check that the file exists and the permissions are correct";
else
@@ -121,13 +240,21 @@ function create_context(host, mode, user_ssl_config)
log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
end
end
- return ctx, err;
+ return ctx, err, user_ssl_config;
end
-function reload_ssl_config()
- default_ssl_config = configmanager.get("*", "ssl");
+local function reload_ssl_config()
+ global_ssl_config = configmanager.get("*", "ssl");
+ global_certificates = configmanager.get("*", "certificates") or "certs";
+ if luasec_has.options.no_compression then
+ core_defaults.options.no_compression = configmanager.get("*", "ssl_compression") ~= true;
+ end
end
prosody.events.add_handler("config-reloaded", reload_ssl_config);
-return _M;
+return {
+ create_context = create_context;
+ reload_ssl_config = reload_ssl_config;
+ find_cert = find_cert;
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 12:36:26 +0000