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plugins/mod_posix.lua @ 2917:2a6552b22f01
stanza_router: Allow non-jabber:client elements after auth, before bind. [originally 2c538d4bde13 in 0.6]
author | Waqas Hussain <waqas20@gmail.com> |
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date | Mon, 22 Mar 2010 15:04:22 +0000 |
parent | 2456:260601859c9f |
child | 2925:692b3c6c5bd2 |
rev | line source |
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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 = "0.3.3"; |
587 | 11 |
12 local pposix = assert(require "util.pposix"); | |
735 | 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 |
587 | 14 |
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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 |
587 | 20 local logger_set = require "util.logger".setwriter; |
21 | |
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22 local lfs = require "lfs"; |
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23 local stat = lfs.attributes; |
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24 |
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25 local prosody = _G.prosody; |
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26 |
587 | 27 module.host = "*"; -- we're a global module |
28 | |
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29 local umask = module:get_option("umask") or "027"; |
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30 pposix.umask(umask); |
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31 |
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32 -- Allow switching away from root, some people like strange ports. |
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33 module:add_event_hook("server-started", function () |
1712 | 34 local uid = module:get_option("setuid"); |
35 local gid = module:get_option("setgid"); | |
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36 if gid then |
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37 local success, msg = pposix.setgid(gid); |
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38 if success then |
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39 module:log("debug", "Changed group to "..gid.." successfully."); |
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40 else |
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41 module:log("error", "Failed to change group to "..gid..". Error: "..msg); |
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42 prosody.shutdown("Failed to change group to "..gid); |
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43 end |
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44 end |
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45 if uid then |
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46 local success, msg = pposix.setuid(uid); |
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47 if success then |
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48 module:log("debug", "Changed user to "..uid.." successfully."); |
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49 else |
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50 module:log("error", "Failed to change user to "..uid..". Error: "..msg); |
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51 prosody.shutdown("Failed to change user to "..uid); |
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52 end |
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53 end |
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54 end); |
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55 |
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56 -- Don't even think about it! |
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57 module:add_event_hook("server-starting", function () |
1712 | 58 local suid = module:get_option("setuid"); |
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59 if not suid or suid == 0 or suid == "root" then |
1712 | 60 if pposix.getuid() == 0 and not module:get_option("run_as_root") then |
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61 module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!"); |
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62 module:log("error", "For more information on running Prosody as root, see http://prosody.im/doc/root"); |
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63 prosody.shutdown("Refusing to run as root"); |
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64 end |
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65 end |
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66 end); |
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67 |
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68 local pidfile; |
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69 local pidfile_handle; |
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70 |
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71 local function remove_pidfile() |
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72 if pidfile_handle then |
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73 pidfile_handle:close(); |
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74 os.remove(pidfile); |
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75 pidfile, pidfile_handle = nil, nil; |
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76 end |
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77 end |
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78 |
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79 local function write_pidfile() |
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80 if pidfile_handle then |
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81 remove_pidfile(); |
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82 end |
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83 pidfile = module:get_option("pidfile"); |
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84 if pidfile then |
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85 local mode = stat(pidfile) and "r+" or "w+"; |
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86 pidfile_handle, err = io.open(pidfile, mode); |
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87 if not pidfile_handle then |
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88 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err); |
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89 prosody.shutdown("Couldn't write pidfile"); |
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90 else |
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91 if not lfs.lock(pidfile_handle, "w") then -- Exclusive lock |
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92 local other_pid = pidfile_handle:read("*a"); |
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93 module:log("error", "Another Prosody instance seems to be running with PID %s, quitting", other_pid); |
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94 pidfile_handle = nil; |
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95 prosody.shutdown("Prosody already running"); |
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96 else |
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97 pidfile_handle:write(tostring(pposix.getpid())); |
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98 pidfile_handle:flush(); |
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99 end |
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100 end |
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101 end |
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102 end |
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103 |
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104 local syslog_opened |
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105 function syslog_sink_maker(config) |
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106 if not syslog_opened then |
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107 pposix.syslog_open("prosody"); |
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108 syslog_opened = true; |
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109 end |
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110 local syslog, format = pposix.syslog_log, string.format; |
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111 return function (name, level, message, ...) |
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112 if ... then |
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113 syslog(level, format(message, ...)); |
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114 else |
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115 syslog(level, message); |
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116 end |
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117 end; |
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118 end |
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119 require "core.loggingmanager".register_sink_type("syslog", syslog_sink_maker); |
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120 |
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121 local daemonize = module:get_option("daemonize"); |
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122 if daemonize == nil then |
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123 local no_daemonize = module:get_option("no_daemonize"); --COMPAT w/ 0.5 |
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124 daemonize = not no_daemonize; |
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125 if no_daemonize ~= nil then |
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126 module:log("warn", "The 'no_daemonize' option is now replaced by 'daemonize'"); |
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127 module:log("warn", "Update your config from 'no_daemonize = %s' to 'daemonize = %s'", tostring(no_daemonize), tostring(daemonize)); |
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128 end |
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129 end |
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130 |
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131 if daemonize then |
587 | 132 local function daemonize_server() |
133 local ok, ret = pposix.daemonize(); | |
134 if not ok then | |
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135 module:log("error", "Failed to daemonize: %s", ret); |
587 | 136 elseif ret and ret > 0 then |
137 os.exit(0); | |
138 else | |
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139 module:log("info", "Successfully daemonized to PID %d", pposix.getpid()); |
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140 write_pidfile(); |
587 | 141 end |
142 end | |
143 module:add_event_hook("server-starting", daemonize_server); | |
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144 else |
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145 -- Not going to daemonize, so write the pid of this process |
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146 write_pidfile(); |
587 | 147 end |
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148 |
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149 module:add_event_hook("server-stopped", remove_pidfile); |
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150 |
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151 -- Set signal handlers |
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152 if signal.signal then |
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153 signal.signal("SIGTERM", function () |
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154 module:log("warn", "Received SIGTERM"); |
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155 prosody.unlock_globals(); |
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156 prosody.shutdown("Received SIGTERM"); |
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157 prosody.lock_globals(); |
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158 end); |
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159 |
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160 signal.signal("SIGHUP", function () |
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161 module:log("info", "Received SIGHUP"); |
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162 prosody.reload_config(); |
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163 prosody.reopen_logfiles(); |
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164 end); |
2332 | 165 |
166 signal.signal("SIGINT", function () | |
167 module:log("info", "Received SIGINT"); | |
168 prosody.unlock_globals(); | |
169 prosody.shutdown("Received SIGINT"); | |
170 prosody.lock_globals(); | |
171 end); | |
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172 end |