diff options
Diffstat (limited to 'core/certmanager.lua')
| -rw-r--r-- | core/certmanager.lua | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/core/certmanager.lua b/core/certmanager.lua new file mode 100644 index 00000000..b91f7110 --- /dev/null +++ b/core/certmanager.lua @@ -0,0 +1,108 @@ +-- 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 prosody = prosody; +local resolve_path = configmanager.resolve_relative_path; +local config_path = prosody.paths.config; + +local luasec_has_noticket, luasec_has_verifyext; +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; +end + +module "certmanager" + +-- 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", luasec_has_noticket and "no_ticket" or nil }; +local default_verifyext = { "lsec_continue", "lsec_ignore_purpose" }; + +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 + +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; + }; + + local ctx, err = ssl_newcontext(ssl_config); + + -- 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 = 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 + 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() + default_ssl_config = configmanager.get("*", "ssl"); +end + +prosody.events.add_handler("config-reloaded", reload_ssl_config); + +return _M; |