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.
10 local want_pposix_version = "0.3.6";
12 local pposix = assert(require "util.pposix");
13 if pposix._VERSION ~= want_pposix_version then
14 module:log("warn", "Unknown version (%s) of binary pposix module, expected %s. Perhaps you need to recompile?", tostring(pposix._VERSION), want_pposix_version);
17 local have_signal, signal = pcall(require, "util.signal");
18 if not have_signal then
19 module:log("warn", "Couldn't load signal library, won't respond to SIGTERM");
22 local lfs = require "lfs";
23 local stat = lfs.attributes;
25 local prosody = _G.prosody;
27 module:set_global(); -- we're a global module
29 local umask = module:get_option("umask") or "027";
32 -- Allow switching away from root, some people like strange ports.
33 module:hook("server-started", function ()
34 local uid = module:get_option("setuid");
35 local gid = module:get_option("setgid");
37 local success, msg = pposix.setgid(gid);
39 module:log("debug", "Changed group to %s successfully.", gid);
41 module:log("error", "Failed to change group to %s. Error: %s", gid, msg);
42 prosody.shutdown("Failed to change group to %s", gid);
46 local success, msg = pposix.setuid(uid);
48 module:log("debug", "Changed user to %s successfully.", uid);
50 module:log("error", "Failed to change user to %s. Error: %s", uid, msg);
51 prosody.shutdown("Failed to change user to %s", uid);
56 -- Don't even think about it!
57 if not prosody.start_time then -- server-starting
58 local suid = module:get_option("setuid");
59 if not suid or suid == 0 or suid == "root" then
60 if pposix.getuid() == 0 and not module:get_option("run_as_root") then
61 module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!");
62 module:log("error", "For more information on running Prosody as root, see http://prosody.im/doc/root");
63 prosody.shutdown("Refusing to run as root");
71 local function remove_pidfile()
72 if pidfile_handle then
73 pidfile_handle:close();
75 pidfile, pidfile_handle = nil, nil;
79 local function write_pidfile()
80 if pidfile_handle then
83 pidfile = module:get_option_string("pidfile");
86 local mode = stat(pidfile) and "r+" or "w+";
87 pidfile_handle, err = io.open(pidfile, mode);
88 if not pidfile_handle then
89 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
90 prosody.shutdown("Couldn't write pidfile");
92 if not lfs.lock(pidfile_handle, "w") then -- Exclusive lock
93 local other_pid = pidfile_handle:read("*a");
94 module:log("error", "Another Prosody instance seems to be running with PID %s, quitting", other_pid);
96 prosody.shutdown("Prosody already running");
98 pidfile_handle:close();
99 pidfile_handle, err = io.open(pidfile, "w+");
100 if not pidfile_handle then
101 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
102 prosody.shutdown("Couldn't write pidfile");
104 if lfs.lock(pidfile_handle, "w") then
105 pidfile_handle:write(tostring(pposix.getpid()));
106 pidfile_handle:flush();
115 function syslog_sink_maker(config)
116 if not syslog_opened then
117 pposix.syslog_open("prosody", module:get_option_string("syslog_facility"));
118 syslog_opened = true;
120 local syslog, format = pposix.syslog_log, string.format;
121 return function (name, level, message, ...)
123 syslog(level, name, format(message, ...));
125 syslog(level, name, message);
129 require "core.loggingmanager".register_sink_type("syslog", syslog_sink_maker);
131 local daemonize = module:get_option("daemonize", prosody.installed);
133 local function remove_log_sinks()
134 local lm = require "core.loggingmanager";
135 lm.register_sink_type("console", nil);
136 lm.register_sink_type("stdout", nil);
141 local function daemonize_server()
142 module:log("info", "Prosody is about to detach from the console, disabling further console output");
144 local ok, ret = pposix.daemonize();
146 module:log("error", "Failed to daemonize: %s", ret);
147 elseif ret and ret > 0 then
150 module:log("info", "Successfully daemonized to PID %d", pposix.getpid());
154 if not prosody.start_time then -- server-starting
158 -- Not going to daemonize, so write the pid of this process
162 module:hook("server-stopped", remove_pidfile);
164 -- Set signal handlers
166 signal.signal("SIGTERM", function ()
167 module:log("warn", "Received SIGTERM");
168 prosody.unlock_globals();
169 prosody.shutdown("Received SIGTERM");
170 prosody.lock_globals();
173 signal.signal("SIGHUP", function ()
174 module:log("info", "Received SIGHUP");
175 prosody.reload_config();
176 prosody.reopen_logfiles();
179 signal.signal("SIGINT", function ()
180 module:log("info", "Received SIGINT");
181 prosody.unlock_globals();
182 prosody.shutdown("Received SIGINT");
183 prosody.lock_globals();