prosody
c965b0accc7c
plugins/mod_posix.lua

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plugins/mod_posix.lua @ 1859:c965b0accc7c

mod_register: Added helpful text to registration error responses.
author Waqas Hussain <waqas20@gmail.com>
date Fri, 02 Oct 2009 17:07:18 +0500
parent 1579:95698f021c5d
child 1680:f3d241915429
child 1691:e9b589dae393
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
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10 local want_pposix_version = "0.3.1";
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11
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12 local pposix = assert(require "util.pposix");
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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
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15 local signal = select(2, pcall(require, "util.signal"));
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16 if type(signal) == "string" then
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17 module:log("warn", "Couldn't load signal library, won't respond to SIGTERM");
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18 end
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19
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20 local config_get = require "core.configmanager".get;
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21 local logger_set = require "util.logger".setwriter;
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22
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23 local prosody = _G.prosody;
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24
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25 module.host = "*"; -- we're a global module
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26
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27 -- Don't even think about it!
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28 module:add_event_hook("server-starting", function ()
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29 if pposix.getuid() == 0 and not config_get("*", "core", "run_as_root") then
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30 module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!");
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31 module:log("error", "For more information on running Prosody as root, see http://prosody.im/doc/root");
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32 prosody.shutdown("Refusing to run as root");
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33 end
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34 end);
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35
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36 local pidfile_written;
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37
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38 local function remove_pidfile()
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39 if pidfile_written then
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40 os.remove(pidfile_written);
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41 pidfile_written = nil;
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42 end
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43 end
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44
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45 local function write_pidfile()
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46 if pidfile_written then
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47 remove_pidfile();
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48 end
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49 local pidfile = config_get("*", "core", "pidfile");
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50 if pidfile then
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51 local pf, err = io.open(pidfile, "w+");
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52 if not pf then
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53 module:log("error", "Couldn't write pidfile; %s", err);
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54 else
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55 pf:write(tostring(pposix.getpid()));
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56 pf:close();
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57 pidfile_written = pidfile;
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58 end
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59 end
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60 end
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61
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62 local syslog_opened
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63 function syslog_sink_maker(config)
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64 if not syslog_opened then
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65 pposix.syslog_open("prosody");
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66 syslog_opened = true;
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67 end
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68 local syslog, format = pposix.syslog_log, string.format;
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69 return function (name, level, message, ...)
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70 if ... then
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71 syslog(level, format(message, ...));
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72 else
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73 syslog(level, message);
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74 end
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75 end;
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76 end
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77 require "core.loggingmanager".register_sink_type("syslog", syslog_sink_maker);
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78
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79 if not config_get("*", "core", "no_daemonize") then
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80 local function daemonize_server()
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81 local ok, ret = pposix.daemonize();
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82 if not ok then
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83 module:log("error", "Failed to daemonize: %s", ret);
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84 elseif ret and ret > 0 then
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85 os.exit(0);
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86 else
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87 module:log("info", "Successfully daemonized to PID %d", pposix.getpid());
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88 write_pidfile();
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89 end
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90 end
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91 module:add_event_hook("server-starting", daemonize_server);
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92 else
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93 -- Not going to daemonize, so write the pid of this process
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94 write_pidfile();
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95 end
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96
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97 module:add_event_hook("server-stopped", remove_pidfile);
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98
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99 -- Set signal handlers
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100 if signal.signal then
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101 signal.signal("SIGTERM", function ()
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102 module:log("warn", "Received SIGTERM");
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103 prosody.unlock_globals();
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104 prosody.shutdown("Received SIGTERM");
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105 prosody.lock_globals();
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106 end);
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107
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108 signal.signal("SIGHUP", function ()
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109 module:log("info", "Received SIGHUP");
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110 prosody.reload_config();
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111 prosody.reopen_logfiles();
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112 end);
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113 end