Fri, 17 Dec 2010 17:28:05 +0100
util.stanza: Iterate on childtags instead of all childs.
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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 = "0.3.5"; |
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 | |
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20 | local lfs = require "lfs"; |
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21 | local stat = lfs.attributes; |
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22 | |
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23 | local prosody = _G.prosody; |
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24 | |
587 | 25 | module.host = "*"; -- we're a global module |
26 | ||
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27 | local umask = module:get_option("umask") or "027"; |
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28 | pposix.umask(umask); |
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29 | |
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30 | -- Allow switching away from root, some people like strange ports. |
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31 | module:hook("server-started", function () |
1712 | 32 | local uid = module:get_option("setuid"); |
33 | local gid = module:get_option("setgid"); | |
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34 | if gid then |
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35 | local success, msg = pposix.setgid(gid); |
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36 | if success then |
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37 | module:log("debug", "Changed group to "..gid.." successfully."); |
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38 | else |
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39 | module:log("error", "Failed to change group to "..gid..". Error: "..msg); |
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40 | prosody.shutdown("Failed to change group to "..gid); |
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41 | end |
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42 | end |
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43 | if uid then |
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44 | local success, msg = pposix.setuid(uid); |
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45 | if success then |
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46 | module:log("debug", "Changed user to "..uid.." successfully."); |
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47 | else |
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48 | module:log("error", "Failed to change user to "..uid..". Error: "..msg); |
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49 | prosody.shutdown("Failed to change user to "..uid); |
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50 | end |
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51 | end |
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52 | end); |
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53 | |
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54 | -- Don't even think about it! |
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55 | if not prosody.start_time then -- server-starting |
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56 | local suid = module:get_option("setuid"); |
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57 | if not suid or suid == 0 or suid == "root" then |
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58 | if pposix.getuid() == 0 and not module:get_option("run_as_root") then |
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59 | module:log("error", "Danger, Will Robinson! Prosody doesn't need to be run as root, so don't do it!"); |
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60 | module:log("error", "For more information on running Prosody as root, see http://prosody.im/doc/root"); |
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61 | prosody.shutdown("Refusing to run as root"); |
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62 | end |
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63 | end |
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64 | end |
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65 | |
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66 | local pidfile; |
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67 | local pidfile_handle; |
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68 | |
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69 | local function remove_pidfile() |
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70 | if pidfile_handle then |
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71 | pidfile_handle:close(); |
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72 | os.remove(pidfile); |
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73 | pidfile, pidfile_handle = nil, nil; |
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74 | end |
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75 | end |
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76 | |
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77 | local function write_pidfile() |
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78 | if pidfile_handle then |
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79 | remove_pidfile(); |
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80 | end |
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81 | pidfile = module:get_option("pidfile"); |
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82 | if pidfile then |
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83 | local err; |
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84 | local mode = stat(pidfile) and "r+" or "w+"; |
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85 | pidfile_handle, err = io.open(pidfile, mode); |
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86 | if not pidfile_handle then |
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87 | module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err); |
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88 | prosody.shutdown("Couldn't write pidfile"); |
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89 | else |
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90 | if not lfs.lock(pidfile_handle, "w") then -- Exclusive lock |
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91 | local other_pid = pidfile_handle:read("*a"); |
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92 | module:log("error", "Another Prosody instance seems to be running with PID %s, quitting", other_pid); |
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93 | pidfile_handle = nil; |
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94 | prosody.shutdown("Prosody already running"); |
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95 | else |
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96 | pidfile_handle:close(); |
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97 | pidfile_handle, err = io.open(pidfile, "w+"); |
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98 | if not pidfile_handle then |
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99 | module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err); |
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100 | prosody.shutdown("Couldn't write pidfile"); |
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101 | else |
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102 | if lfs.lock(pidfile_handle, "w") then |
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103 | pidfile_handle:write(tostring(pposix.getpid())); |
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104 | pidfile_handle:flush(); |
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105 | end |
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106 | end |
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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 | |
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112 | local syslog_opened; |
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113 | function syslog_sink_maker(config) |
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114 | if not syslog_opened then |
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115 | pposix.syslog_open("prosody"); |
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116 | syslog_opened = true; |
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117 | end |
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118 | local syslog, format = pposix.syslog_log, string.format; |
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119 | return function (name, level, message, ...) |
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120 | if ... then |
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121 | syslog(level, format(message, ...)); |
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122 | else |
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123 | syslog(level, message); |
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124 | end |
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125 | end; |
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126 | end |
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127 | require "core.loggingmanager".register_sink_type("syslog", syslog_sink_maker); |
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128 | |
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129 | local daemonize = module:get_option("daemonize"); |
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130 | if daemonize == nil then |
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131 | local no_daemonize = module:get_option("no_daemonize"); --COMPAT w/ 0.5 |
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132 | daemonize = not no_daemonize; |
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133 | if no_daemonize ~= nil then |
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134 | module:log("warn", "The 'no_daemonize' option is now replaced by 'daemonize'"); |
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135 | module:log("warn", "Update your config from 'no_daemonize = %s' to 'daemonize = %s'", tostring(no_daemonize), tostring(daemonize)); |
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136 | end |
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137 | end |
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138 | |
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139 | if daemonize then |
587 | 140 | local function daemonize_server() |
141 | local ok, ret = pposix.daemonize(); | |
142 | if not ok then | |
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143 | module:log("error", "Failed to daemonize: %s", ret); |
587 | 144 | elseif ret and ret > 0 then |
145 | os.exit(0); | |
146 | else | |
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147 | module:log("info", "Successfully daemonized to PID %d", pposix.getpid()); |
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148 | write_pidfile(); |
587 | 149 | end |
150 | end | |
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151 | if not prosody.start_time then -- server-starting |
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152 | daemonize_server(); |
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153 | end |
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154 | else |
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155 | -- Not going to daemonize, so write the pid of this process |
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156 | write_pidfile(); |
587 | 157 | end |
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158 | |
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159 | module:hook("server-stopped", remove_pidfile); |
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160 | |
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161 | -- Set signal handlers |
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162 | if signal.signal then |
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163 | signal.signal("SIGTERM", function () |
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164 | module:log("warn", "Received SIGTERM"); |
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165 | prosody.unlock_globals(); |
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166 | prosody.shutdown("Received SIGTERM"); |
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167 | prosody.lock_globals(); |
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168 | end); |
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169 | |
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170 | signal.signal("SIGHUP", function () |
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171 | module:log("info", "Received SIGHUP"); |
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172 | prosody.reload_config(); |
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173 | prosody.reopen_logfiles(); |
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174 | end); |
2332 | 175 | |
176 | signal.signal("SIGINT", function () | |
177 | module:log("info", "Received SIGINT"); | |
178 | prosody.unlock_globals(); | |
179 | prosody.shutdown("Received SIGINT"); | |
180 | prosody.lock_globals(); | |
181 | end); | |
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182 | end |