prosody
d4f7118d1531
plugins/mod_posix.lua

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plugins/mod_posix.lua @ 13043:d4f7118d1531

mod_admin_shell: Make IP column thinner if IPv6 is disabled IPv6 addresses can be pretty long, so if they can be more compact, that's nice. But nobody would disable IPv6, would they?
author Kim Alvefur <zash@zash.se>
date Fri, 07 Apr 2023 13:09:00 +0200
parent 12977:74b9e05af71e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Matthew Wild <mwild1@gmail.com>
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1 -- Prosody IM
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Matthew Wild <mwild1@gmail.com>
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2 -- Copyright (C) 2008-2010 Matthew Wild
b7049746bd29 Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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Florian Zeitz <florob@babelmonkeys.de>
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4 --
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Matthew Wild <mwild1@gmail.com>
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5 -- This project is MIT/X11 licensed. Please see the
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents: 1238
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6 -- COPYING file in the source package for more information.
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
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7 --
569d58d21612 Add copyright header to those files missing one
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8
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9
8012
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10 local want_pposix_version = "0.4.0";
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11
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12 local pposix = assert(require "prosody.util.pposix");
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edf3db386a19 mod_posix: Improve error message for a pposix version mismatch
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13 if pposix._VERSION ~= want_pposix_version then
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bbedf564b9f9 mod_posix: Split long line [luacheck]
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14 module:log("warn", "Unknown version (%s) of binary pposix module, expected %s."
bbedf564b9f9 mod_posix: Split long line [luacheck]
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15 .. "Perhaps you need to recompile?", tostring(pposix._VERSION), want_pposix_version);
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16 end
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17
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18 local have_signal, signal = pcall(require, "prosody.util.signal");
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12d68f7b1be0 mod_posix: Detect failure to load util.signal by first pcall return value not by type of the second
Kim Alvefur <zash@zash.se>
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19 if not have_signal then
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20 module:log("warn", "Couldn't load signal library, won't respond to SIGTERM");
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21 end
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22
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23 local lfs = require "lfs";
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24 local stat = lfs.attributes;
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25
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26 local prosody = _G.prosody;
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27
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403b56b78018 mod_posix, mod_bosh, mod_admin_telnet: Use module:set_global()
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28 module:set_global(); -- we're a global module
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29
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30 local umask = module:get_option_string("umask", "027");
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31 pposix.umask(umask);
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32
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33 -- Don't even think about it!
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Waqas Hussain <waqas20@gmail.com>
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34 if not prosody.start_time then -- server-starting
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35 if pposix.getuid() == 0 and not module:get_option_boolean("run_as_root") then
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36 module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!");
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37 module:log("error", "For more information on running Prosody as root, see https://prosody.im/doc/root");
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38 prosody.shutdown("Refusing to run as root", 1);
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39 end
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40 end
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41
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42 local pidfile;
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43 local pidfile_handle;
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44
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45 local function remove_pidfile()
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46 if pidfile_handle then
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47 pidfile_handle:close();
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48 os.remove(pidfile);
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49 pidfile, pidfile_handle = nil, nil;
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50 end
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51 end
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52
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53 local function write_pidfile()
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54 if pidfile_handle then
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55 remove_pidfile();
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56 end
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57 pidfile = module:get_option_path("pidfile", nil, "data");
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58 if pidfile then
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59 local err;
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60 local mode = stat(pidfile) and "r+" or "w+";
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61 pidfile_handle, err = io.open(pidfile, mode);
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62 if not pidfile_handle then
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63 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
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64 prosody.shutdown("Couldn't write pidfile", 1);
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65 else
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66 if not lfs.lock(pidfile_handle, "w") then -- Exclusive lock
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67 local other_pid = pidfile_handle:read("*a");
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68 module:log("error", "Another Prosody instance seems to be running with PID %s, quitting", other_pid);
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69 pidfile_handle = nil;
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70 prosody.shutdown("Prosody already running", 1);
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71 else
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72 pidfile_handle:close();
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73 pidfile_handle, err = io.open(pidfile, "w+");
0769cc5f34b6 mod_posix: Truncate the pidfile before writing to ensure that we never overwrite with a PID shorter than the previous, and end with an invalid PID in the file.
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74 if not pidfile_handle then
0769cc5f34b6 mod_posix: Truncate the pidfile before writing to ensure that we never overwrite with a PID shorter than the previous, and end with an invalid PID in the file.
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75 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
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76 prosody.shutdown("Couldn't write pidfile", 1);
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77 else
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78 if lfs.lock(pidfile_handle, "w") then
a8a3e662fea7 mod_posix: Some (perhaps temporary) changes to re-lock the pidfile after truncating, to avoid breaking prosodyctl
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79 pidfile_handle:write(tostring(pposix.getpid()));
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80 pidfile_handle:flush();
a8a3e662fea7 mod_posix: Some (perhaps temporary) changes to re-lock the pidfile after truncating, to avoid breaking prosodyctl
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81 end
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82 end
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83 end
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84 end
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85 end
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diff changeset
86 end
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87
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88 local daemonize = prosody.opts.daemonize;
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89
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90 if daemonize == nil then
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91 -- Fall back to config file if not specified on command-line
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92 daemonize = module:get_option_boolean("daemonize", nil);
25e178edbc2c mod_posix: Add deprecation warning for the 'daemonize' option
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93 if daemonize ~= nil then
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94 module:log("warn", "The 'daemonize' option has been deprecated, specify -D or -F on the command line instead.");
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95 -- TODO: Write some docs and include a link in the warning.
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96 end
10598
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97 end
2073
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parents: 1712
diff changeset
98
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99 local function remove_log_sinks()
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100 local lm = require "prosody.core.loggingmanager";
5175
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101 lm.register_sink_type("console", nil);
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102 lm.register_sink_type("stdout", nil);
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103 lm.reload_logging();
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104 end
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Kim Alvefur <zash@zash.se>
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105
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parents: 1712
diff changeset
106 if daemonize then
587
43f509a1519a Add mod_posix, fixes #5
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diff changeset
107 local function daemonize_server()
5177
add9ad38208e mod_posix: Log a message explaining that we are detaching from the console
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108 module:log("info", "Prosody is about to detach from the console, disabling further console output");
5175
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Kim Alvefur <zash@zash.se>
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diff changeset
109 remove_log_sinks();
587
43f509a1519a Add mod_posix, fixes #5
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parents:
diff changeset
110 local ok, ret = pposix.daemonize();
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parents:
diff changeset
111 if not ok then
1062
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112 module:log("error", "Failed to daemonize: %s", ret);
587
43f509a1519a Add mod_posix, fixes #5
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parents:
diff changeset
113 elseif ret and ret > 0 then
43f509a1519a Add mod_posix, fixes #5
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diff changeset
114 os.exit(0);
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parents:
diff changeset
115 else
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f9a1ac50782b mod_posix: Fix calls to log() (replace with module:log) and make some global accesses explicit
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116 module:log("info", "Successfully daemonized to PID %d", pposix.getpid());
991
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parents: 735
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117 write_pidfile();
587
43f509a1519a Add mod_posix, fixes #5
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parents:
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118 end
43f509a1519a Add mod_posix, fixes #5
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parents:
diff changeset
119 end
11062
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120 module:hook("server-started", daemonize_server)
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121 else
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122 -- Not going to daemonize, so write the pid of this process
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123 write_pidfile();
587
43f509a1519a Add mod_posix, fixes #5
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parents:
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124 end
991
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125
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126 module:hook("server-stopped", remove_pidfile);
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127
1118
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128 -- Set signal handlers
6875
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parents: 6874
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129 if have_signal then
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130 module:add_timer(0, function ()
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131 signal.signal("SIGTERM", function ()
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132 module:log("warn", "Received SIGTERM");
12297
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133 prosody.main_thread:run(function ()
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134 prosody.unlock_globals();
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135 prosody.shutdown("Received SIGTERM");
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136 prosody.lock_globals();
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137 end);
8663
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138 end);
1118
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139
8663
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140 signal.signal("SIGHUP", function ()
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141 module:log("info", "Received SIGHUP");
12297
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142 prosody.main_thread:run(function ()
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143 prosody.reload_config();
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144 end);
9763
982529dd0bed mod_posix: Don't reload logging twice
Kim Alvefur <zash@zash.se>
parents: 8663
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145 -- this also reloads logging
8663
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parents: 8235
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146 end);
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5452
diff changeset
147
8663
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diff changeset
148 signal.signal("SIGINT", function ()
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diff changeset
149 module:log("info", "Received SIGINT");
12297
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parents: 11830
diff changeset
150 prosody.main_thread:run(function ()
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parents: 11830
diff changeset
151 prosody.unlock_globals();
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parents: 11830
diff changeset
152 prosody.shutdown("Received SIGINT");
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parents: 11830
diff changeset
153 prosody.lock_globals();
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parents: 11830
diff changeset
154 end);
8663
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parents: 8235
diff changeset
155 end);
11179
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Matthew Wild <mwild1@gmail.com>
parents: 11062
diff changeset
156
96da09c771a1 mod_posix: Hook and fire events on SIGUSR1/2
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diff changeset
157 signal.signal("SIGUSR1", function ()
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diff changeset
158 module:log("info", "Received SIGUSR1");
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diff changeset
159 module:fire_event("signal/SIGUSR1");
96da09c771a1 mod_posix: Hook and fire events on SIGUSR1/2
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parents: 11062
diff changeset
160 end);
96da09c771a1 mod_posix: Hook and fire events on SIGUSR1/2
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parents: 11062
diff changeset
161
96da09c771a1 mod_posix: Hook and fire events on SIGUSR1/2
Matthew Wild <mwild1@gmail.com>
parents: 11062
diff changeset
162 signal.signal("SIGUSR2", function ()
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parents: 11062
diff changeset
163 module:log("info", "Received SIGUSR2");
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parents: 11062
diff changeset
164 module:fire_event("signal/SIGUSR2");
96da09c771a1 mod_posix: Hook and fire events on SIGUSR1/2
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parents: 11062
diff changeset
165 end);
2332
7772dde4010b mod_posix: Catch SIGINT
Matthew Wild <mwild1@gmail.com>
parents: 2074
diff changeset
166 end);
991
cd0d75de8345 mod_posix: Allow logging and pidfile options to take effect without needing to daemonize. Add the ability to catch SIGTERM.
Matthew Wild <mwild1@gmail.com>
parents: 735
diff changeset
167 end
11179
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Matthew Wild <mwild1@gmail.com>
parents: 11062
diff changeset
168
96da09c771a1 mod_posix: Hook and fire events on SIGUSR1/2
Matthew Wild <mwild1@gmail.com>
parents: 11062
diff changeset
169 -- For other modules to reference
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parents: 11062
diff changeset
170 features = {
96da09c771a1 mod_posix: Hook and fire events on SIGUSR1/2
Matthew Wild <mwild1@gmail.com>
parents: 11062
diff changeset
171 signal_events = true;
96da09c771a1 mod_posix: Hook and fire events on SIGUSR1/2
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parents: 11062
diff changeset
172 };