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 = "0.3.5";
12 local pposix = assert(require "util.pposix");
13 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
15 local signal = select(2, pcall(require, "util.signal"));
16 if type(signal) == "string" then
17 module:log("warn", "Couldn't load signal library, won't respond to SIGTERM");
20 local lfs = require "lfs";
21 local stat = lfs.attributes;
23 local prosody = _G.prosody;
25 module.host = "*"; -- we're a global module
27 local umask = module:get_option("umask") or "027";
30 -- Allow switching away from root, some people like strange ports.
31 module:hook("server-started", function ()
32 local uid = module:get_option("setuid");
33 local gid = module:get_option("setgid");
35 local success, msg = pposix.setgid(gid);
37 module:log("debug", "Changed group to "..gid.." successfully.");
39 module:log("error", "Failed to change group to "..gid..". Error: "..msg);
40 prosody.shutdown("Failed to change group to "..gid);
44 local success, msg = pposix.setuid(uid);
46 module:log("debug", "Changed user to "..uid.." successfully.");
48 module:log("error", "Failed to change user to "..uid..". Error: "..msg);
49 prosody.shutdown("Failed to change user to "..uid);
54 -- Don't even think about it!
55 if not prosody.start_time then -- server-starting
56 local suid = module:get_option("setuid");
57 if not suid or suid == 0 or suid == "root" then
58 if pposix.getuid() == 0 and not module:get_option("run_as_root") then
59 module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!");
60 module:log("error", "For more information on running Prosody as root, see http://prosody.im/doc/root");
61 prosody.shutdown("Refusing to run as root");
69 local function remove_pidfile()
70 if pidfile_handle then
71 pidfile_handle:close();
73 pidfile, pidfile_handle = nil, nil;
77 local function write_pidfile()
78 if pidfile_handle then
81 pidfile = module:get_option("pidfile");
84 local mode = stat(pidfile) and "r+" or "w+";
85 pidfile_handle, err = io.open(pidfile, mode);
86 if not pidfile_handle then
87 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
88 prosody.shutdown("Couldn't write pidfile");
90 if not lfs.lock(pidfile_handle, "w") then -- Exclusive lock
91 local other_pid = pidfile_handle:read("*a");
92 module:log("error", "Another Prosody instance seems to be running with PID %s, quitting", other_pid);
94 prosody.shutdown("Prosody already running");
96 pidfile_handle:close();
97 pidfile_handle, err = io.open(pidfile, "w+");
98 if not pidfile_handle then
99 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
100 prosody.shutdown("Couldn't write pidfile");
102 if lfs.lock(pidfile_handle, "w") then
103 pidfile_handle:write(tostring(pposix.getpid()));
104 pidfile_handle:flush();
113 function syslog_sink_maker(config)
114 if not syslog_opened then
115 pposix.syslog_open("prosody");
116 syslog_opened = true;
118 local syslog, format = pposix.syslog_log, string.format;
119 return function (name, level, message, ...)
121 syslog(level, format(message, ...));
123 syslog(level, message);
127 require "core.loggingmanager".register_sink_type("syslog", syslog_sink_maker);
129 local daemonize = module:get_option("daemonize");
130 if daemonize == nil then
131 local no_daemonize = module:get_option("no_daemonize"); --COMPAT w/ 0.5
132 daemonize = not no_daemonize;
133 if no_daemonize ~= nil then
134 module:log("warn", "The 'no_daemonize' option is now replaced by 'daemonize'");
135 module:log("warn", "Update your config from 'no_daemonize = %s' to 'daemonize = %s'", tostring(no_daemonize), tostring(daemonize));
140 local function daemonize_server()
141 local ok, ret = pposix.daemonize();
143 module:log("error", "Failed to daemonize: %s", ret);
144 elseif ret and ret > 0 then
147 module:log("info", "Successfully daemonized to PID %d", pposix.getpid());
151 if not prosody.start_time then -- server-starting
155 -- Not going to daemonize, so write the pid of this process
159 module:hook("server-stopped", remove_pidfile);
161 -- Set signal handlers
162 if signal.signal then
163 signal.signal("SIGTERM", function ()
164 module:log("warn", "Received SIGTERM");
165 prosody.unlock_globals();
166 prosody.shutdown("Received SIGTERM");
167 prosody.lock_globals();
170 signal.signal("SIGHUP", function ()
171 module:log("info", "Received SIGHUP");
172 prosody.reload_config();
173 prosody.reopen_logfiles();
176 signal.signal("SIGINT", function ()
177 module:log("info", "Received SIGINT");
178 prosody.unlock_globals();
179 prosody.shutdown("Received SIGINT");
180 prosody.lock_globals();