+-- 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 want_pposix_version = "0.3.0";
+
+local want_pposix_version = "0.3.6";
local pposix = assert(require "util.pposix");
-if pposix._VERSION ~= want_pposix_version then module:log("warn", "Unknown version (%s) of binary pposix module, expected %s", tostring(pposix._VERSION), want_pposix_version); end
+if pposix._VERSION ~= want_pposix_version then
+ module:log("warn", "Unknown version (%s) of binary pposix module, expected %s. Perhaps you need to recompile?", tostring(pposix._VERSION), want_pposix_version);
+end
+
+local signal = select(2, pcall(require, "util.signal"));
+if type(signal) == "string" then
+ module:log("warn", "Couldn't load signal library, won't respond to SIGTERM");
+end
-local config_get = require "core.configmanager".get;
-local logger_set = require "util.logger".setwriter;
+local lfs = require "lfs";
+local stat = lfs.attributes;
-module.host = "*"; -- we're a global module
+local prosody = _G.prosody;
-if not config_get("*", "core", "no_daemonize") then
- local function daemonize_server()
- local logwriter;
-
- local logfilename = config_get("*", "core", "log");
- if logfilename == "syslog" then
- pposix.syslog_open("prosody");
- pposix.syslog_setminlevel(config.get("*", "core", "minimum_log_level") or "info");
- local syslog, format = pposix.syslog_log, string.format;
- logwriter = function (name, level, message, ...)
- if ... then
- syslog(level, format(message, ...));
- else
- syslog(level, message);
- end
- end;
- elseif logfilename then
- local logfile = io.open(logfilename, "a+");
- if logfile then
- local write, format, flush = logfile.write, string.format, logfile.flush;
- logwriter = function (name, level, message, ...)
- if ... then
- write(logfile, name, "\t", level, "\t", format(message, ...), "\n");
- else
- write(logfile, name, "\t" , level, "\t", message, "\n");
- end
- flush(logfile);
- end;
+module:set_global(); -- we're a global module
+
+local umask = module:get_option("umask") or "027";
+pposix.umask(umask);
+
+-- Allow switching away from root, some people like strange ports.
+module:hook("server-started", function ()
+ local uid = module:get_option("setuid");
+ local gid = module:get_option("setgid");
+ if gid then
+ local success, msg = pposix.setgid(gid);
+ if success then
+ module:log("debug", "Changed group to %s successfully.", gid);
+ else
+ module:log("error", "Failed to change group to %s. Error: %s", gid, msg);
+ prosody.shutdown("Failed to change group to %s", gid);
+ end
+ end
+ if uid then
+ local success, msg = pposix.setuid(uid);
+ if success then
+ module:log("debug", "Changed user to %s successfully.", uid);
+ else
+ module:log("error", "Failed to change user to %s. Error: %s", uid, msg);
+ prosody.shutdown("Failed to change user to %s", uid);
end
+ end
+ end);
+
+-- Don't even think about it!
+if not prosody.start_time then -- server-starting
+ local suid = module:get_option("setuid");
+ if not suid or suid == 0 or suid == "root" then
+ if pposix.getuid() == 0 and not module:get_option("run_as_root") then
+ module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!");
+ module:log("error", "For more information on running Prosody as root, see http://prosody.im/doc/root");
+ prosody.shutdown("Refusing to run as root");
+ end
+ end
+end
+
+local pidfile;
+local pidfile_handle;
+
+local function remove_pidfile()
+ if pidfile_handle then
+ pidfile_handle:close();
+ os.remove(pidfile);
+ pidfile, pidfile_handle = nil, nil;
+ end
+end
+
+local function write_pidfile()
+ if pidfile_handle then
+ remove_pidfile();
+ end
+ pidfile = module:get_option("pidfile");
+ if pidfile then
+ local err;
+ local mode = stat(pidfile) and "r+" or "w+";
+ pidfile_handle, err = io.open(pidfile, mode);
+ if not pidfile_handle then
+ module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
+ prosody.shutdown("Couldn't write pidfile");
else
- log("debug", "No logging specified, will continue with default");
+ if not lfs.lock(pidfile_handle, "w") then -- Exclusive lock
+ local other_pid = pidfile_handle:read("*a");
+ module:log("error", "Another Prosody instance seems to be running with PID %s, quitting", other_pid);
+ pidfile_handle = nil;
+ prosody.shutdown("Prosody already running");
+ else
+ pidfile_handle:close();
+ pidfile_handle, err = io.open(pidfile, "w+");
+ if not pidfile_handle then
+ module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
+ prosody.shutdown("Couldn't write pidfile");
+ else
+ if lfs.lock(pidfile_handle, "w") then
+ pidfile_handle:write(tostring(pposix.getpid()));
+ pidfile_handle:flush();
+ end
+ end
+ end
end
-
+ end
+end
+
+local syslog_opened;
+function syslog_sink_maker(config)
+ if not syslog_opened then
+ pposix.syslog_open("prosody", module:get_option_string("syslog_facility"));
+ syslog_opened = true;
+ end
+ local syslog, format = pposix.syslog_log, string.format;
+ return function (name, level, message, ...)
+ if ... then
+ syslog(level, name, format(message, ...));
+ else
+ syslog(level, name, message);
+ end
+ end;
+end
+require "core.loggingmanager".register_sink_type("syslog", syslog_sink_maker);
+
+local daemonize = module:get_option("daemonize");
+if daemonize == nil then
+ local no_daemonize = module:get_option("no_daemonize"); --COMPAT w/ 0.5
+ daemonize = not no_daemonize;
+ if no_daemonize ~= nil then
+ module:log("warn", "The 'no_daemonize' option is now replaced by 'daemonize'");
+ module:log("warn", "Update your config from 'no_daemonize = %s' to 'daemonize = %s'", tostring(no_daemonize), tostring(daemonize));
+ end
+end
+
+local function remove_log_sinks()
+ local lm = require "core.loggingmanager";
+ lm.register_sink_type("console", nil);
+ lm.register_sink_type("stdout", nil);
+ lm.reload_logging();
+end
+
+if daemonize then
+ local function daemonize_server()
+ module:log("info", "Prosody is about to detach from the console, disabling further console output");
+ remove_log_sinks();
local ok, ret = pposix.daemonize();
if not ok then
- log("error", "Failed to daemonize: %s", ret);
+ module:log("error", "Failed to daemonize: %s", ret);
elseif ret and ret > 0 then
os.exit(0);
else
- if logwriter then
- local ok, ret = logger_set(logwriter);
- if not ok then
- log("error", "Couldn't set new log output: %s", ret);
- end
- end
- log("info", "Successfully daemonized to PID %d", pposix.getpid());
-
- local pidfile = config.get("*", "core", "pidfile");
- if pidfile then
- local pf, err = io.open(pidfile, "w+");
- if not pf then
- log("error", "Couldn't write pidfile; %s", err);
- else
- pf:write(tostring(pposix.getpid()));
- pf:close();
- end
- end
+ module:log("info", "Successfully daemonized to PID %d", pposix.getpid());
+ write_pidfile();
end
end
- module:add_event_hook("server-starting", daemonize_server);
+ if not prosody.start_time then -- server-starting
+ daemonize_server();
+ end
+else
+ -- Not going to daemonize, so write the pid of this process
+ write_pidfile();
+end
+
+module:hook("server-stopped", remove_pidfile);
+
+-- Set signal handlers
+if signal.signal then
+ signal.signal("SIGTERM", function ()
+ module:log("warn", "Received SIGTERM");
+ prosody.unlock_globals();
+ prosody.shutdown("Received SIGTERM");
+ prosody.lock_globals();
+ end);
+
+ signal.signal("SIGHUP", function ()
+ module:log("info", "Received SIGHUP");
+ prosody.reload_config();
+ prosody.reopen_logfiles();
+ end);
+
+ signal.signal("SIGINT", function ()
+ module:log("info", "Received SIGINT");
+ prosody.unlock_globals();
+ prosody.shutdown("Received SIGINT");
+ prosody.lock_globals();
+ end);
end
projects / prosody.git / blobdiff