diff options
Diffstat (limited to 'util/prosodyctl/check.lua')
| -rw-r--r-- | util/prosodyctl/check.lua | 666 |
1 files changed, 666 insertions, 0 deletions
diff --git a/util/prosodyctl/check.lua b/util/prosodyctl/check.lua new file mode 100644 index 00000000..1795b01d --- /dev/null +++ b/util/prosodyctl/check.lua @@ -0,0 +1,666 @@ +local configmanager = require "core.configmanager"; +local show_usage = require "util.prosodyctl".show_usage; +local show_warning = require "util.prosodyctl".show_warning; +local dependencies = require "util.dependencies"; +local socket = require "socket"; +local jid_split = require "util.jid".prepped_split; +local modulemanager = require "core.modulemanager"; + +local function check(arg) + if arg[1] == "--help" then + show_usage([[check]], [[Perform basic checks on your Prosody installation]]); + return 1; + end + local what = table.remove(arg, 1); + local set = require "util.set"; + local it = require "util.iterators"; + local ok = true; + local function disabled_hosts(host, conf) return host ~= "*" and conf.enabled ~= false; end + local function enabled_hosts() return it.filter(disabled_hosts, pairs(configmanager.getconfig())); end + if not (what == nil or what == "disabled" or what == "config" or what == "dns" or what == "certs") then + show_warning("Don't know how to check '%s'. Try one of 'config', 'dns', 'certs' or 'disabled'.", what); + return 1; + end + if not what or what == "disabled" then + local disabled_hosts_set = set.new(); + for host, host_options in it.filter("*", pairs(configmanager.getconfig())) do + if host_options.enabled == false then + disabled_hosts_set:add(host); + end + end + if not disabled_hosts_set:empty() then + local msg = "Checks will be skipped for these disabled hosts: %s"; + if what then msg = "These hosts are disabled: %s"; end + show_warning(msg, tostring(disabled_hosts_set)); + if what then return 0; end + print"" + end + end + if not what or what == "config" then + print("Checking config..."); + local deprecated = set.new({ + "anonymous_login", + "bosh_ports", + "cross_domain_bosh", + "cross_domain_websocket", + "daemonize", + "disallow_s2s", + "legacy_ssl_interfaces", + "legacy_ssl_port", + "legacy_ssl_ports", + "legacy_ssl_ssl", + "no_daemonize", + "require_encryption", + "vcard_compatibility", + }); + local known_global_options = set.new({ + "access_control_allow_credentials", + "access_control_allow_headers", + "access_control_allow_methods", + "access_control_max_age", + "admin_socket", + "body_size_limit", + "bosh_max_inactivity", + "bosh_max_polling", + "bosh_max_wait", + "buffer_size_limit", + "c2s_close_timeout", + "c2s_stanza_size_limit", + "c2s_tcp_keepalives", + "c2s_timeout", + "component_stanza_size_limit", + "component_tcp_keepalives", + "consider_bosh_secure", + "consider_websocket_secure", + "console_banner", + "console_prettyprint_settings", + "cross_domain_bosh", + "cross_domain_websocket", + "daemonize", + "gc", + "http_default_host", + "http_errors_always_show", + "http_errors_default_message", + "http_errors_detailed", + "http_errors_messages", + "installer_plugin_path", + "limits", + "limits_resolution", + "log", + "multiplex_buffer_size", + "network_backend", + "network_default_read_size", + "network_settings", + "pidfile", + "plugin_paths", + "plugin_server", + "prosodyctl_timeout", + "prosody_group", + "prosody_user", + "run_as_root", + "s2s_close_timeout", + "s2s_insecure_domains", + "s2s_require_encryption", + "s2s_secure_auth", + "s2s_secure_domains", + "s2s_stanza_size_limit", + "s2s_tcp_keepalives", + "s2s_timeout", + "statistics", + "statistics_config", + "statistics_interval", + "tcp_keepalives", + "trusted_proxies", + "umask", + "use_dane", + "use_ipv4", + "use_ipv6", + "use_libevent", + "websocket_frame_buffer_limit", + "websocket_frame_fragment_limit", + "websocket_get_response_body", + "websocket_get_response_text", + }); + local config = configmanager.getconfig(); + -- Check that we have any global options (caused by putting a host at the top) + if it.count(it.filter("log", pairs(config["*"]))) == 0 then + ok = false; + print(""); + print(" No global options defined. Perhaps you have put a host definition at the top") + print(" of the config file? They should be at the bottom, see https://prosody.im/doc/configure#overview"); + end + if it.count(enabled_hosts()) == 0 then + ok = false; + print(""); + if it.count(it.filter("*", pairs(config))) == 0 then + print(" No hosts are defined, please add at least one VirtualHost section") + elseif config["*"]["enabled"] == false then + print(" No hosts are enabled. Remove enabled = false from the global section or put enabled = true under at least one VirtualHost section") + else + print(" All hosts are disabled. Remove enabled = false from at least one VirtualHost section") + end + end + if not config["*"].modules_enabled then + print(" No global modules_enabled is set?"); + local suggested_global_modules; + for host, options in enabled_hosts() do --luacheck: ignore 213/host + if not options.component_module and options.modules_enabled then + suggested_global_modules = set.intersection(suggested_global_modules or set.new(options.modules_enabled), set.new(options.modules_enabled)); + end + end + if suggested_global_modules and not suggested_global_modules:empty() then + print(" Consider moving these modules into modules_enabled in the global section:") + print(" "..tostring(suggested_global_modules / function (x) return ("%q"):format(x) end)); + end + print(); + end + + do -- Check for modules enabled both normally and as components + local modules = set.new(config["*"]["modules_enabled"]); + for host, options in enabled_hosts() do + local component_module = options.component_module; + if component_module and modules:contains(component_module) then + print((" mod_%s is enabled both in modules_enabled and as Component %q %q"):format(component_module, host, component_module)); + print(" This means the service is enabled on all VirtualHosts as well as the Component."); + print(" Are you sure this what you want? It may cause unexpected behaviour."); + end + end + end + + -- Check for global options under hosts + local global_options = set.new(it.to_array(it.keys(config["*"]))); + local deprecated_global_options = set.intersection(global_options, deprecated); + if not deprecated_global_options:empty() then + print(""); + print(" You have some deprecated options in the global section:"); + print(" "..tostring(deprecated_global_options)) + ok = false; + end + for host, options in it.filter(function (h) return h ~= "*" end, pairs(configmanager.getconfig())) do + local host_options = set.new(it.to_array(it.keys(options))); + local misplaced_options = set.intersection(host_options, known_global_options); + for name in pairs(options) do + if name:match("^interfaces?") + or name:match("_ports?$") or name:match("_interfaces?$") + or (name:match("_ssl$") and not name:match("^[cs]2s_ssl$")) then + misplaced_options:add(name); + end + end + if not misplaced_options:empty() then + ok = false; + print(""); + local n = it.count(misplaced_options); + print(" You have "..n.." option"..(n>1 and "s " or " ").."set under "..host.." that should be"); + print(" in the global section of the config file, above any VirtualHost or Component definitions,") + print(" see https://prosody.im/doc/configure#overview for more information.") + print(""); + print(" You need to move the following option"..(n>1 and "s" or "")..": "..table.concat(it.to_array(misplaced_options), ", ")); + end + end + for host, options in enabled_hosts() do + local host_options = set.new(it.to_array(it.keys(options))); + local subdomain = host:match("^[^.]+"); + if not(host_options:contains("component_module")) and (subdomain == "jabber" or subdomain == "xmpp" + or subdomain == "chat" or subdomain == "im") then + print(""); + print(" Suggestion: If "..host.. " is a new host with no real users yet, consider renaming it now to"); + print(" "..host:gsub("^[^.]+%.", "")..". You can use SRV records to redirect XMPP clients and servers to "..host.."."); + print(" For more information see: https://prosody.im/doc/dns"); + end + end + local all_modules = set.new(config["*"].modules_enabled); + local all_options = set.new(it.to_array(it.keys(config["*"]))); + for host in enabled_hosts() do + all_options:include(set.new(it.to_array(it.keys(config[host])))); + all_modules:include(set.new(config[host].modules_enabled)); + end + for mod in all_modules do + if mod:match("^mod_") then + print(""); + print(" Modules in modules_enabled should not have the 'mod_' prefix included."); + print(" Change '"..mod.."' to '"..mod:match("^mod_(.*)").."'."); + elseif mod:match("^auth_") then + print(""); + print(" Authentication modules should not be added to modules_enabled,"); + print(" but be specified in the 'authentication' option."); + print(" Remove '"..mod.."' from modules_enabled and instead add"); + print(" authentication = '"..mod:match("^auth_(.*)").."'"); + print(" For more information see https://prosody.im/doc/authentication"); + elseif mod:match("^storage_") then + print(""); + print(" storage modules should not be added to modules_enabled,"); + print(" but be specified in the 'storage' option."); + print(" Remove '"..mod.."' from modules_enabled and instead add"); + print(" storage = '"..mod:match("^storage_(.*)").."'"); + print(" For more information see https://prosody.im/doc/storage"); + end + end + if all_modules:contains("vcard") and all_modules:contains("vcard_legacy") then + print(""); + print(" Both mod_vcard_legacy and mod_vcard are enabled but they conflict"); + print(" with each other. Remove one."); + end + if all_modules:contains("pep") and all_modules:contains("pep_simple") then + print(""); + print(" Both mod_pep_simple and mod_pep are enabled but they conflict"); + print(" with each other. Remove one."); + end + for host, host_config in pairs(config) do --luacheck: ignore 213/host + if type(rawget(host_config, "storage")) == "string" and rawget(host_config, "default_storage") then + print(""); + print(" The 'default_storage' option is not needed if 'storage' is set to a string."); + break; + end + end + local require_encryption = set.intersection(all_options, set.new({ + "require_encryption", "c2s_require_encryption", "s2s_require_encryption" + })):empty(); + local ssl = dependencies.softreq"ssl"; + if not ssl then + if not require_encryption then + print(""); + print(" You require encryption but LuaSec is not available."); + print(" Connections will fail."); + ok = false; + end + elseif not ssl.loadcertificate then + if all_options:contains("s2s_secure_auth") then + print(""); + print(" You have set s2s_secure_auth but your version of LuaSec does "); + print(" not support certificate validation, so all s2s connections will"); + print(" fail."); + ok = false; + elseif all_options:contains("s2s_secure_domains") then + local secure_domains = set.new(); + for host in enabled_hosts() do + if config[host].s2s_secure_auth == true then + secure_domains:add("*"); + else + secure_domains:include(set.new(config[host].s2s_secure_domains)); + end + end + if not secure_domains:empty() then + print(""); + print(" You have set s2s_secure_domains but your version of LuaSec does "); + print(" not support certificate validation, so s2s connections to/from "); + print(" these domains will fail."); + ok = false; + end + end + elseif require_encryption and not all_modules:contains("tls") then + print(""); + print(" You require encryption but mod_tls is not enabled."); + print(" Connections will fail."); + ok = false; + end + + print("Done.\n"); + end + if not what or what == "dns" then + local dns = require "net.dns"; + pcall(function () + local unbound = require"net.unbound"; + local unbound_config = configmanager.get("*", "unbound") or {}; + unbound_config.hoststxt = false; -- don't look at /etc/hosts + configmanager.set("*", "unbound", unbound_config); + unbound.purge(); -- ensure the above config is used + dns = unbound.dns; + end) + local idna = require "util.encodings".idna; + local ip = require "util.ip"; + local c2s_ports = set.new(configmanager.get("*", "c2s_ports") or {5222}); + local s2s_ports = set.new(configmanager.get("*", "s2s_ports") or {5269}); + local c2s_tls_ports = set.new(configmanager.get("*", "direct_tls_ports") or {}); + + local c2s_srv_required, s2s_srv_required, c2s_tls_srv_required; + if not c2s_ports:contains(5222) then + c2s_srv_required = true; + end + if not s2s_ports:contains(5269) then + s2s_srv_required = true; + end + if not c2s_tls_ports:empty() then + c2s_tls_srv_required = true; + end + + local problem_hosts = set.new(); + + local external_addresses, internal_addresses = set.new(), set.new(); + + local fqdn = socket.dns.tohostname(socket.dns.gethostname()); + if fqdn then + do + local res = dns.lookup(idna.to_ascii(fqdn), "A"); + if res then + for _, record in ipairs(res) do + external_addresses:add(record.a); + end + end + end + do + local res = dns.lookup(idna.to_ascii(fqdn), "AAAA"); + if res then + for _, record in ipairs(res) do + external_addresses:add(record.aaaa); + end + end + end + end + + local local_addresses = require"util.net".local_addresses() or {}; + + for addr in it.values(local_addresses) do + if not ip.new_ip(addr).private then + external_addresses:add(addr); + else + internal_addresses:add(addr); + end + end + + if external_addresses:empty() then + print(""); + print(" Failed to determine the external addresses of this server. Checks may be inaccurate."); + c2s_srv_required, s2s_srv_required = true, true; + end + + local v6_supported = not not socket.tcp6; + + local function trim_dns_name(n) + return (n:gsub("%.$", "")); + end + + for jid, host_options in enabled_hosts() do + local all_targets_ok, some_targets_ok = true, false; + local node, host = jid_split(jid); + + local modules, component_module = modulemanager.get_modules_for_host(host); + if component_module then + modules:add(component_module); + end + + local is_component = not not host_options.component_module; + print("Checking DNS for "..(is_component and "component" or "host").." "..jid.."..."); + if node then + print("Only the domain part ("..host..") is used in DNS.") + end + local target_hosts = set.new(); + if modules:contains("c2s") then + local res = dns.lookup("_xmpp-client._tcp."..idna.to_ascii(host)..".", "SRV"); + if res and #res > 0 then + for _, record in ipairs(res) do + if record.srv.target == "." then -- TODO is this an error if mod_c2s is enabled? + print(" 'xmpp-client' service disabled by pointing to '.'"); -- FIXME Explain better what this is + break; + end + local target = trim_dns_name(record.srv.target); + target_hosts:add(target); + if not c2s_ports:contains(record.srv.port) then + print(" SRV target "..target.." contains unknown client port: "..record.srv.port); + end + end + else + if c2s_srv_required then + print(" No _xmpp-client SRV record found for "..host..", but it looks like you need one."); + all_targets_ok = false; + else + target_hosts:add(host); + end + end + end + if modules:contains("c2s") and c2s_tls_srv_required then + local res = dns.lookup("_xmpps-client._tcp."..idna.to_ascii(host)..".", "SRV"); + if res and #res > 0 then + for _, record in ipairs(res) do + if record.srv.target == "." then -- TODO is this an error if mod_c2s is enabled? + print(" 'xmpps-client' service disabled by pointing to '.'"); -- FIXME Explain better what this is + break; + end + local target = trim_dns_name(record.srv.target); + target_hosts:add(target); + if not c2s_tls_ports:contains(record.srv.port) then + print(" SRV target "..target.." contains unknown Direct TLS client port: "..record.srv.port); + end + end + else + print(" No _xmpps-client SRV record found for "..host..", but it looks like you need one."); + all_targets_ok = false; + end + end + if modules:contains("s2s") then + local res = dns.lookup("_xmpp-server._tcp."..idna.to_ascii(host)..".", "SRV"); + if res and #res > 0 then + for _, record in ipairs(res) do + if record.srv.target == "." then -- TODO Is this an error if mod_s2s is enabled? + print(" 'xmpp-server' service disabled by pointing to '.'"); -- FIXME Explain better what this is + break; + end + local target = trim_dns_name(record.srv.target); + target_hosts:add(target); + if not s2s_ports:contains(record.srv.port) then + print(" SRV target "..target.." contains unknown server port: "..record.srv.port); + end + end + else + if s2s_srv_required then + print(" No _xmpp-server SRV record found for "..host..", but it looks like you need one."); + all_targets_ok = false; + else + target_hosts:add(host); + end + end + end + if target_hosts:empty() then + target_hosts:add(host); + end + + if target_hosts:contains("localhost") then + print(" Target 'localhost' cannot be accessed from other servers"); + target_hosts:remove("localhost"); + end + + if modules:contains("proxy65") then + local proxy65_target = configmanager.get(host, "proxy65_address") or host; + if type(proxy65_target) == "string" then + local A, AAAA = dns.lookup(idna.to_ascii(proxy65_target), "A"), dns.lookup(idna.to_ascii(proxy65_target), "AAAA"); + local prob = {}; + if not A then + table.insert(prob, "A"); + end + if v6_supported and not AAAA then + table.insert(prob, "AAAA"); + end + if #prob > 0 then + print(" File transfer proxy "..proxy65_target.." has no "..table.concat(prob, "/") + .." record. Create one or set 'proxy65_address' to the correct host/IP."); + end + else + print(" proxy65_address for "..host.." should be set to a string, unable to perform DNS check"); + end + end + + local use_ipv4 = configmanager.get("*", "use_ipv4") ~= false; + local use_ipv6 = configmanager.get("*", "use_ipv6") ~= false; + if not use_ipv4 and not use_ipv6 then + print(" Both IPv6 and IPv4 are disabled, Prosody will not listen on any ports"); + print(" nor be able to connect to any remote servers."); + all_targets_ok = false; + end + + for target_host in target_hosts do + local host_ok_v4, host_ok_v6; + do + local res = dns.lookup(idna.to_ascii(target_host), "A"); + if res then + for _, record in ipairs(res) do + if external_addresses:contains(record.a) then + some_targets_ok = true; + host_ok_v4 = true; + elseif internal_addresses:contains(record.a) then + host_ok_v4 = true; + some_targets_ok = true; + print(" "..target_host.." A record points to internal address, external connections might fail"); + else + print(" "..target_host.." A record points to unknown address "..record.a); + all_targets_ok = false; + end + end + end + end + do + local res = dns.lookup(idna.to_ascii(target_host), "AAAA"); + if res then + for _, record in ipairs(res) do + if external_addresses:contains(record.aaaa) then + some_targets_ok = true; + host_ok_v6 = true; + elseif internal_addresses:contains(record.aaaa) then + host_ok_v6 = true; + some_targets_ok = true; + print(" "..target_host.." AAAA record points to internal address, external connections might fail"); + else + print(" "..target_host.." AAAA record points to unknown address "..record.aaaa); + all_targets_ok = false; + end + end + end + end + + if host_ok_v4 and not use_ipv4 then + print(" Host "..target_host.." does seem to resolve to this server but IPv4 has been disabled"); + all_targets_ok = false; + end + + if host_ok_v6 and not use_ipv6 then + print(" Host "..target_host.." does seem to resolve to this server but IPv6 has been disabled"); + all_targets_ok = false; + end + + local bad_protos = {} + if use_ipv4 and not host_ok_v4 then + table.insert(bad_protos, "IPv4"); + end + if use_ipv6 and not host_ok_v6 then + table.insert(bad_protos, "IPv6"); + end + if #bad_protos > 0 then + print(" Host "..target_host.." does not seem to resolve to this server ("..table.concat(bad_protos, "/")..")"); + end + if host_ok_v6 and not v6_supported then + print(" Host "..target_host.." has AAAA records, but your version of LuaSocket does not support IPv6."); + print(" Please see https://prosody.im/doc/ipv6 for more information."); + end + end + if not all_targets_ok then + print(" "..(some_targets_ok and "Only some" or "No").." targets for "..host.." appear to resolve to this server."); + if is_component then + print(" DNS records are necessary if you want users on other servers to access this component."); + end + problem_hosts:add(host); + end + print(""); + end + if not problem_hosts:empty() then + print(""); + print("For more information about DNS configuration please see https://prosody.im/doc/dns"); + print(""); + ok = false; + end + end + if not what or what == "certs" then + local cert_ok; + print"Checking certificates..." + local x509_verify_identity = require"util.x509".verify_identity; + local create_context = require "core.certmanager".create_context; + local ssl = dependencies.softreq"ssl"; + -- local datetime_parse = require"util.datetime".parse_x509; + local load_cert = ssl and ssl.loadcertificate; + -- or ssl.cert_from_pem + if not ssl then + print("LuaSec not available, can't perform certificate checks") + if what == "certs" then cert_ok = false end + elseif not load_cert then + print("This version of LuaSec (" .. ssl._VERSION .. ") does not support certificate checking"); + cert_ok = false + else + local function skip_bare_jid_hosts(host) + if jid_split(host) then + -- See issue #779 + return false; + end + return true; + end + for host in it.filter(skip_bare_jid_hosts, enabled_hosts()) do + print("Checking certificate for "..host); + -- First, let's find out what certificate this host uses. + local host_ssl_config = configmanager.rawget(host, "ssl") + or configmanager.rawget(host:match("%.(.*)"), "ssl"); + local global_ssl_config = configmanager.rawget("*", "ssl"); + local ok, err, ssl_config = create_context(host, "server", host_ssl_config, global_ssl_config); + if not ok then + print(" Error: "..err); + cert_ok = false + elseif not ssl_config.certificate then + print(" No 'certificate' found for "..host) + cert_ok = false + elseif not ssl_config.key then + print(" No 'key' found for "..host) + cert_ok = false + else + local key, err = io.open(ssl_config.key); -- Permissions check only + if not key then + print(" Could not open "..ssl_config.key..": "..err); + cert_ok = false + else + key:close(); + end + local cert_fh, err = io.open(ssl_config.certificate); -- Load the file. + if not cert_fh then + print(" Could not open "..ssl_config.certificate..": "..err); + cert_ok = false + else + print(" Certificate: "..ssl_config.certificate) + local cert = load_cert(cert_fh:read"*a"); cert_fh:close(); + if not cert:validat(os.time()) then + print(" Certificate has expired.") + cert_ok = false + elseif not cert:validat(os.time() + 86400) then + print(" Certificate expires within one day.") + cert_ok = false + elseif not cert:validat(os.time() + 86400*7) then + print(" Certificate expires within one week.") + elseif not cert:validat(os.time() + 86400*31) then + print(" Certificate expires within one month.") + end + if configmanager.get(host, "component_module") == nil + and not x509_verify_identity(host, "_xmpp-client", cert) then + print(" Not valid for client connections to "..host..".") + cert_ok = false + end + if (not (configmanager.get(host, "anonymous_login") + or configmanager.get(host, "authentication") == "anonymous")) + and not x509_verify_identity(host, "_xmpp-server", cert) then + print(" Not valid for server-to-server connections to "..host..".") + cert_ok = false + end + end + end + end + end + if cert_ok == false then + print("") + print("For more information about certificates please see https://prosody.im/doc/certificates"); + ok = false + end + print("") + end + if not ok then + print("Problems found, see above."); + else + print("All checks passed, congratulations!"); + end + return ok and 0 or 2; +end + +return { + check = check; +}; |