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plugins/mod_posix.lua @ 3398:abc4a52aef02
net.server_select: Remove 'now' parameter from starttls(), and base it on whether the sendbuffer is empty instead
author | Matthew Wild <mwild1@gmail.com> |
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date | Thu, 22 Jul 2010 13:19:37 +0100 |
parent | 3341:a8a3e662fea7 |
child | 3471:482275e38224 |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 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 if not prosody.start_time then -- server-starting |
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58 local suid = module:get_option("setuid"); |
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59 if not suid or suid == 0 or suid == "root" then |
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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 err; |
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86 local mode = stat(pidfile) and "r+" or "w+"; |
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87 pidfile_handle, err = io.open(pidfile, mode); |
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88 if not pidfile_handle then |
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89 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err); |
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90 prosody.shutdown("Couldn't write pidfile"); |
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91 else |
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92 if not lfs.lock(pidfile_handle, "w") then -- Exclusive lock |
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93 local other_pid = pidfile_handle:read("*a"); |
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94 module:log("error", "Another Prosody instance seems to be running with PID %s, quitting", other_pid); |
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95 pidfile_handle = nil; |
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96 prosody.shutdown("Prosody already running"); |
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97 else |
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98 pidfile_handle:close(); |
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99 pidfile_handle, err = io.open(pidfile, "w+"); |
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100 if not pidfile_handle then |
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101 module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err); |
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102 prosody.shutdown("Couldn't write pidfile"); |
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103 else |
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104 if lfs.lock(pidfile_handle, "w") then |
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105 pidfile_handle:write(tostring(pposix.getpid())); |
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106 pidfile_handle:flush(); |
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107 end |
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108 end |
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109 end |
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110 end |
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111 end |
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112 end |
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113 |
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114 local syslog_opened |
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115 function syslog_sink_maker(config) |
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116 if not syslog_opened then |
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117 pposix.syslog_open("prosody"); |
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118 syslog_opened = true; |
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119 end |
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120 local syslog, format = pposix.syslog_log, string.format; |
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121 return function (name, level, message, ...) |
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122 if ... then |
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123 syslog(level, format(message, ...)); |
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124 else |
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125 syslog(level, message); |
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126 end |
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127 end; |
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128 end |
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129 require "core.loggingmanager".register_sink_type("syslog", syslog_sink_maker); |
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130 |
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131 local daemonize = module:get_option("daemonize"); |
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132 if daemonize == nil then |
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133 local no_daemonize = module:get_option("no_daemonize"); --COMPAT w/ 0.5 |
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134 daemonize = not no_daemonize; |
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135 if no_daemonize ~= nil then |
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136 module:log("warn", "The 'no_daemonize' option is now replaced by 'daemonize'"); |
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137 module:log("warn", "Update your config from 'no_daemonize = %s' to 'daemonize = %s'", tostring(no_daemonize), tostring(daemonize)); |
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138 end |
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139 end |
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140 |
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141 if daemonize then |
587 | 142 local function daemonize_server() |
143 local ok, ret = pposix.daemonize(); | |
144 if not ok then | |
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145 module:log("error", "Failed to daemonize: %s", ret); |
587 | 146 elseif ret and ret > 0 then |
147 os.exit(0); | |
148 else | |
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149 module:log("info", "Successfully daemonized to PID %d", pposix.getpid()); |
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150 write_pidfile(); |
587 | 151 end |
152 end | |
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153 if not prosody.start_time then -- server-starting |
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154 daemonize_server(); |
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155 end |
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156 else |
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157 -- Not going to daemonize, so write the pid of this process |
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158 write_pidfile(); |
587 | 159 end |
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160 |
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161 module:add_event_hook("server-stopped", remove_pidfile); |
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162 |
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163 -- Set signal handlers |
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164 if signal.signal then |
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165 signal.signal("SIGTERM", function () |
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166 module:log("warn", "Received SIGTERM"); |
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167 prosody.unlock_globals(); |
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168 prosody.shutdown("Received SIGTERM"); |
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169 prosody.lock_globals(); |
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170 end); |
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171 |
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172 signal.signal("SIGHUP", function () |
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173 module:log("info", "Received SIGHUP"); |
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174 prosody.reload_config(); |
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175 prosody.reopen_logfiles(); |
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176 end); |
2332 | 177 |
178 signal.signal("SIGINT", function () | |
179 module:log("info", "Received SIGINT"); | |
180 prosody.unlock_globals(); | |
181 prosody.shutdown("Received SIGINT"); | |
182 prosody.lock_globals(); | |
183 end); | |
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184 end |