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util/startup.lua @ 8635:47e3b8b6f17a
prosody, prosodyctl, util.startup: Finally factor out startup-related and common code into a separate module
author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 20 Mar 2018 16:10:37 +0000 |
child | 8636:8691083420e4 |
rev | line source |
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8635
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prosody, prosodyctl, util.startup: Finally factor out startup-related and common code into a separate module
Matthew Wild <mwild1@gmail.com>
parents:
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1 local startup = {}; |
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2 |
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3 local prosody = { events = require "util.events".new() }; |
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4 |
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5 local config = require "core.configmanager"; |
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6 |
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7 local dependencies = require "util.dependencies"; |
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8 |
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9 function startup.read_config() |
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10 local filenames = {}; |
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11 |
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12 local filename; |
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13 if arg[1] == "--config" and arg[2] then |
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14 table.insert(filenames, arg[2]); |
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15 if CFG_CONFIGDIR then |
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16 table.insert(filenames, CFG_CONFIGDIR.."/"..arg[2]); |
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17 end |
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18 table.remove(arg, 1); table.remove(arg, 1); |
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19 elseif os.getenv("PROSODY_CONFIG") then -- Passed by prosodyctl |
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20 table.insert(filenames, os.getenv("PROSODY_CONFIG")); |
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21 else |
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22 table.insert(filenames, (CFG_CONFIGDIR or ".").."/prosody.cfg.lua"); |
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23 end |
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24 for _,_filename in ipairs(filenames) do |
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25 filename = _filename; |
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26 local file = io.open(filename); |
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27 if file then |
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28 file:close(); |
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29 prosody.config_file = filename; |
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30 CFG_CONFIGDIR = filename:match("^(.*)[\\/][^\\/]*$"); |
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31 break; |
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32 end |
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33 end |
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34 prosody.config_file = filename |
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35 local ok, level, err = config.load(filename); |
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36 if not ok then |
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37 print("\n"); |
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38 print("**************************"); |
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39 if level == "parser" then |
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40 print("A problem occured while reading the config file "..filename); |
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41 print(""); |
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42 local err_line, err_message = tostring(err):match("%[string .-%]:(%d*): (.*)"); |
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43 if err:match("chunk has too many syntax levels$") then |
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44 print("An Include statement in a config file is including an already-included"); |
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45 print("file and causing an infinite loop. An Include statement in a config file is..."); |
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46 else |
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47 print("Error"..(err_line and (" on line "..err_line) or "")..": "..(err_message or tostring(err))); |
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48 end |
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49 print(""); |
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50 elseif level == "file" then |
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51 print("Prosody was unable to find the configuration file."); |
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52 print("We looked for: "..filename); |
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53 print("A sample config file is included in the Prosody download called prosody.cfg.lua.dist"); |
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54 print("Copy or rename it to prosody.cfg.lua and edit as necessary."); |
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55 end |
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56 print("More help on configuring Prosody can be found at https://prosody.im/doc/configure"); |
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57 print("Good luck!"); |
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58 print("**************************"); |
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59 print(""); |
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60 os.exit(1); |
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61 end |
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62 end |
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63 |
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64 function startup.check_dependencies() |
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65 if not dependencies.check_dependencies() then |
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66 os.exit(1); |
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67 end |
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68 end |
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69 |
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70 -- luacheck: globals socket server |
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71 |
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72 function startup.load_libraries() |
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73 -- Load socket framework |
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74 -- luacheck: ignore 111/server 111/socket |
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75 socket = require "socket"; |
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76 server = require "net.server" |
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77 end |
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78 |
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79 -- The global log() gets defined by loggingmanager |
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80 -- luacheck: ignore 113/log |
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81 |
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82 function startup.init_logging() |
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83 -- Initialize logging |
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84 require "core.loggingmanager" |
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85 end |
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86 |
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87 function startup.log_dependency_warnings() |
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88 dependencies.log_warnings(); |
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89 end |
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90 |
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91 function startup.sanity_check() |
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92 for host, host_config in pairs(config.getconfig()) do |
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93 if host ~= "*" |
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94 and host_config.enabled ~= false |
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95 and not host_config.component_module then |
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96 return; |
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97 end |
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98 end |
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99 log("error", "No enabled VirtualHost entries found in the config file."); |
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100 log("error", "At least one active host is required for Prosody to function. Exiting..."); |
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101 os.exit(1); |
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102 end |
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103 |
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104 function startup.sandbox_require() |
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105 -- Replace require() with one that doesn't pollute _G, required |
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106 -- for neat sandboxing of modules |
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107 -- luacheck: ignore 113/getfenv 111/require |
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108 local _realG = _G; |
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109 local _real_require = require; |
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110 local getfenv = getfenv or function (f) |
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111 -- FIXME: This is a hack to replace getfenv() in Lua 5.2 |
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112 local name, env = debug.getupvalue(debug.getinfo(f or 1).func, 1); |
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113 if name == "_ENV" then |
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114 return env; |
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115 end |
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116 end |
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117 function require(...) |
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118 local curr_env = getfenv(2); |
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119 local curr_env_mt = getmetatable(curr_env); |
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120 local _realG_mt = getmetatable(_realG); |
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121 if curr_env_mt and curr_env_mt.__index and not curr_env_mt.__newindex and _realG_mt then |
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122 local old_newindex, old_index; |
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123 old_newindex, _realG_mt.__newindex = _realG_mt.__newindex, curr_env; |
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124 old_index, _realG_mt.__index = _realG_mt.__index, function (_G, k) -- luacheck: ignore 212/_G |
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125 return rawget(curr_env, k); |
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126 end; |
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127 local ret = _real_require(...); |
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128 _realG_mt.__newindex = old_newindex; |
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129 _realG_mt.__index = old_index; |
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130 return ret; |
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131 end |
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132 return _real_require(...); |
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133 end |
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134 end |
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135 |
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136 function startup.set_function_metatable() |
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137 local mt = {}; |
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138 function mt.__index(f, upvalue) |
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139 local i, name, value = 0; |
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140 repeat |
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141 i = i + 1; |
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142 name, value = debug.getupvalue(f, i); |
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143 until name == upvalue or name == nil; |
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144 return value; |
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145 end |
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146 function mt.__newindex(f, upvalue, value) |
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147 local i, name = 0; |
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148 repeat |
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149 i = i + 1; |
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150 name = debug.getupvalue(f, i); |
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151 until name == upvalue or name == nil; |
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152 if name then |
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153 debug.setupvalue(f, i, value); |
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154 end |
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155 end |
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156 function mt.__tostring(f) |
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157 local info = debug.getinfo(f); |
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158 return ("function(%s:%d)"):format(info.short_src:match("[^\\/]*$"), info.linedefined); |
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159 end |
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160 debug.setmetatable(function() end, mt); |
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161 end |
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162 |
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163 function startup.detect_platform() |
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164 prosody.platform = "unknown"; |
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165 if os.getenv("WINDIR") then |
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166 prosody.platform = "windows"; |
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167 elseif package.config:sub(1,1) == "/" then |
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168 prosody.platform = "posix"; |
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169 end |
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170 end |
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171 |
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172 function startup.detect_installed() |
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173 prosody.installed = nil; |
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174 if CFG_SOURCEDIR and (prosody.platform == "windows" or CFG_SOURCEDIR:match("^/")) then |
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175 prosody.installed = true; |
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176 end |
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177 end |
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178 |
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179 function startup.chdir() |
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180 if prosody.installed then |
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181 -- Change working directory to data path. |
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182 require "lfs".chdir(data_path); |
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183 end |
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184 end |
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185 |
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186 function startup.init_global_state() |
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187 prosody.bare_sessions = {}; |
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188 prosody.full_sessions = {}; |
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189 prosody.hosts = {}; |
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190 |
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191 -- COMPAT: These globals are deprecated |
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192 -- luacheck: ignore 111/bare_sessions 111/full_sessions 111/hosts |
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193 bare_sessions = prosody.bare_sessions; |
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194 full_sessions = prosody.full_sessions; |
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195 hosts = prosody.hosts; |
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196 |
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197 local data_path = config.get("*", "data_path") or CFG_DATADIR or "data"; |
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198 local custom_plugin_paths = config.get("*", "plugin_paths"); |
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199 if custom_plugin_paths then |
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200 local path_sep = package.config:sub(3,3); |
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201 -- path1;path2;path3;defaultpath... |
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202 CFG_PLUGINDIR = table.concat(custom_plugin_paths, path_sep)..path_sep..(CFG_PLUGINDIR or "plugins"); |
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203 end |
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204 prosody.paths = { source = CFG_SOURCEDIR, config = CFG_CONFIGDIR or ".", |
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205 plugins = CFG_PLUGINDIR or "plugins", data = data_path }; |
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206 |
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207 prosody.arg = _G.arg; |
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208 |
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209 startup.detect_platform(); |
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210 startup.detect_installed(); |
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211 _G.prosody = prosody; |
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212 end |
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213 |
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214 function startup.add_global_prosody_functions() |
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215 -- Function to reload the config file |
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216 function prosody.reload_config() |
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217 log("info", "Reloading configuration file"); |
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218 prosody.events.fire_event("reloading-config"); |
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219 local ok, level, err = config.load(prosody.config_file); |
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220 if not ok then |
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221 if level == "parser" then |
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222 log("error", "There was an error parsing the configuration file: %s", tostring(err)); |
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223 elseif level == "file" then |
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224 log("error", "Couldn't read the config file when trying to reload: %s", tostring(err)); |
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225 end |
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226 end |
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227 return ok, (err and tostring(level)..": "..tostring(err)) or nil; |
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228 end |
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229 |
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230 -- Function to reopen logfiles |
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231 function prosody.reopen_logfiles() |
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232 log("info", "Re-opening log files"); |
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233 prosody.events.fire_event("reopen-log-files"); |
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234 end |
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235 |
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236 -- Function to initiate prosody shutdown |
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237 function prosody.shutdown(reason, code) |
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238 log("info", "Shutting down: %s", reason or "unknown reason"); |
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239 prosody.shutdown_reason = reason; |
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240 prosody.shutdown_code = code; |
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241 prosody.events.fire_event("server-stopping", { |
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242 reason = reason; |
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243 code = code; |
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244 }); |
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245 server.setquitting(true); |
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246 end |
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247 end |
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248 |
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249 function startup.load_secondary_libraries() |
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250 --- Load and initialise core modules |
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251 require "util.import" |
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252 require "util.xmppstream" |
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253 require "core.stanza_router" |
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254 require "core.statsmanager" |
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255 require "core.hostmanager" |
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256 require "core.portmanager" |
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257 require "core.modulemanager" |
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258 require "core.usermanager" |
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259 require "core.rostermanager" |
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260 require "core.sessionmanager" |
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261 package.loaded['core.componentmanager'] = setmetatable({},{__index=function() |
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262 log("warn", "componentmanager is deprecated: %s", debug.traceback():match("\n[^\n]*\n[ \t]*([^\n]*)")); |
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263 return function() end |
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264 end}); |
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265 |
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266 require "util.array" |
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267 require "util.datetime" |
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268 require "util.iterators" |
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269 require "util.timer" |
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270 require "util.helpers" |
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271 |
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272 pcall(require, "util.signal") -- Not on Windows |
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273 |
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274 -- Commented to protect us from |
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275 -- the second kind of people |
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276 --[[ |
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277 pcall(require, "remdebug.engine"); |
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278 if remdebug then remdebug.engine.start() end |
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279 ]] |
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280 |
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281 require "util.stanza" |
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282 require "util.jid" |
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283 end |
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284 |
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285 function startup.init_http_client() |
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286 local http = require "net.http" |
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287 local config_ssl = config.get("*", "ssl") or {} |
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288 local https_client = config.get("*", "client_https_ssl") |
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289 http.default.options.sslctx = require "core.certmanager".create_context("client_https port 0", "client", |
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290 { capath = config_ssl.capath, cafile = config_ssl.cafile, verify = "peer", }, https_client); |
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291 end |
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292 |
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293 function startup.init_data_store() |
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294 require "core.storagemanager"; |
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295 end |
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296 |
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297 function startup.prepare_to_start() |
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298 log("info", "Prosody is using the %s backend for connection handling", server.get_backend()); |
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299 -- Signal to modules that we are ready to start |
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300 prosody.events.fire_event("server-starting"); |
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301 prosody.start_time = os.time(); |
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302 end |
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303 |
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304 function startup.init_global_protection() |
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305 -- Catch global accesses |
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306 -- luacheck: ignore 212/t |
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307 local locked_globals_mt = { |
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308 __index = function (t, k) log("warn", "%s", debug.traceback("Attempt to read a non-existent global '"..tostring(k).."'", 2)); end; |
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309 __newindex = function (t, k, v) error("Attempt to set a global: "..tostring(k).." = "..tostring(v), 2); end; |
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310 }; |
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311 |
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312 function prosody.unlock_globals() |
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313 setmetatable(_G, nil); |
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314 end |
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315 |
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316 function prosody.lock_globals() |
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317 setmetatable(_G, locked_globals_mt); |
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318 end |
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319 |
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320 -- And lock now... |
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321 prosody.lock_globals(); |
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322 end |
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323 |
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324 function startup.read_version() |
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325 -- Try to determine version |
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326 local version_file = io.open((CFG_SOURCEDIR or ".").."/prosody.version"); |
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327 prosody.version = "unknown"; |
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328 if version_file then |
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329 prosody.version = version_file:read("*a"):gsub("%s*$", ""); |
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330 version_file:close(); |
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331 if #prosody.version == 12 and prosody.version:match("^[a-f0-9]+$") then |
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332 prosody.version = "hg:"..prosody.version; |
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333 end |
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334 else |
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335 local hg = require"util.mercurial"; |
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336 local hgid = hg.check_id(CFG_SOURCEDIR or "."); |
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337 if hgid then prosody.version = "hg:" .. hgid; end |
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338 end |
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339 end |
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340 |
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341 function startup.log_greeting() |
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342 log("info", "Hello and welcome to Prosody version %s", prosody.version); |
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343 end |
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344 |
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345 function startup.notify_started() |
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346 prosody.events.fire_event("server-started"); |
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347 end |
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348 |
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349 -- Override logging config (used by prosodyctl) |
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350 function startup.force_console_logging() |
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351 local original_logging_config = config.get("*", "log"); |
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352 config.set("*", "log", { { levels = { min="info" }, to = "console" } }); |
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353 end |
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354 |
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355 function startup.switch_user() |
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356 -- Switch away from root and into the prosody user -- |
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357 -- NOTE: This function is only used by prosodyctl. |
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358 -- The prosody process is built with the assumption that |
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359 -- it is already started as the appropriate user. |
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360 local switched_user, current_uid; |
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361 |
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362 local want_pposix_version = "0.4.0"; |
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363 local have_pposix, pposix = pcall(require, "util.pposix"); |
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364 |
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365 if have_pposix and pposix then |
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366 if pposix._VERSION ~= want_pposix_version then |
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367 print(string.format("Unknown version (%s) of binary pposix module, expected %s", |
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368 tostring(pposix._VERSION), want_pposix_version)); |
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369 os.exit(1); |
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370 end |
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371 current_uid = pposix.getuid(); |
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372 local arg_root = arg[1] == "--root"; |
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373 if arg_root then table.remove(arg, 1); end |
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374 if current_uid == 0 and config.get("*", "run_as_root") ~= true and not arg_root then |
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375 -- We haz root! |
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376 local desired_user = config.get("*", "prosody_user") or "prosody"; |
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377 local desired_group = config.get("*", "prosody_group") or desired_user; |
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378 local ok, err = pposix.setgid(desired_group); |
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379 if ok then |
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380 ok, err = pposix.initgroups(desired_user); |
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381 end |
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382 if ok then |
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383 ok, err = pposix.setuid(desired_user); |
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384 if ok then |
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385 -- Yay! |
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386 switched_user = true; |
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387 end |
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388 end |
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389 if not switched_user then |
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390 -- Boo! |
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391 print("Warning: Couldn't switch to Prosody user/group '"..tostring(desired_user).."'/'"..tostring(desired_group).."': "..tostring(err)); |
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392 else |
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393 -- Make sure the Prosody user can read the config |
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394 local conf, err, errno = io.open(ENV_CONFIG); |
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395 if conf then |
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396 conf:close(); |
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397 else |
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398 print("The config file is not readable by the '"..desired_user.."' user."); |
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399 print("Prosody will not be able to read it."); |
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400 print("Error was "..err); |
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401 os.exit(1); |
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402 end |
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403 end |
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404 end |
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405 |
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406 -- Set our umask to protect data files |
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407 pposix.umask(config.get("*", "umask") or "027"); |
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408 pposix.setenv("HOME", data_path); |
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409 pposix.setenv("PROSODY_CONFIG", ENV_CONFIG); |
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410 else |
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411 print("Error: Unable to load pposix module. Check that Prosody is installed correctly.") |
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412 print("For more help send the below error to us through https://prosody.im/discuss"); |
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413 print(tostring(pposix)) |
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414 os.exit(1); |
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415 end |
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416 end |
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417 |
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418 function startup.check_unwriteable() |
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419 local function test_writeable(filename) |
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420 local f, err = io.open(filename, "a"); |
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421 if not f then |
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422 return false, err; |
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423 end |
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424 f:close(); |
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425 return true; |
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426 end |
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427 |
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428 local unwriteable_files = {}; |
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429 if type(original_logging_config) == "string" and original_logging_config:sub(1,1) ~= "*" then |
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430 local ok, err = test_writeable(original_logging_config); |
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431 if not ok then |
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432 table.insert(unwriteable_files, err); |
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433 end |
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434 elseif type(original_logging_config) == "table" then |
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435 for _, rule in ipairs(original_logging_config) do |
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436 if rule.filename then |
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437 local ok, err = test_writeable(rule.filename); |
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438 if not ok then |
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439 table.insert(unwriteable_files, err); |
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440 end |
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441 end |
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442 end |
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443 end |
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444 |
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445 if #unwriteable_files > 0 then |
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446 print("One of more of the Prosody log files are not"); |
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447 print("writeable, please correct the errors and try"); |
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448 print("starting prosodyctl again."); |
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449 print(""); |
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450 for _, err in ipairs(unwriteable_files) do |
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451 print(err); |
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452 end |
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453 print(""); |
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454 os.exit(1); |
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455 end |
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456 end |
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457 |
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458 function startup.make_dummy_hosts() |
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459 -- When running under prosodyctl, we don't want to |
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460 -- fully initialize the server, so we populate prosody.hosts |
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461 -- with just enough things for most code to work correctly |
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462 prosody.core_post_stanza = function () end; -- TODO: mod_router! |
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463 local function make_host(hostname) |
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464 return { |
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465 type = "local", |
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466 events = prosody.events, |
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467 modules = {}, |
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468 sessions = {}, |
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469 users = require "core.usermanager".new_null_provider(hostname) |
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470 }; |
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471 end |
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472 |
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473 for hostname, config in pairs(config.getconfig()) do |
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474 hosts[hostname] = make_host(hostname); |
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475 end |
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476 end |
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477 |
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478 -- prosodyctl only |
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479 function startup.prosodyctl() |
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480 startup.read_config(); |
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481 startup.chdir(); |
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482 startup.check_dependencies(); |
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483 startup.force_console_logging(); |
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484 startup.init_global_state(); |
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485 startup.init_logging(); |
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486 startup.log_dependency_warnings(); |
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487 startup.check_unwriteable(); |
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488 startup.load_libraries(); |
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489 startup.init_global_protection(); |
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490 startup.init_http_client(); |
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491 startup.make_dummy_hosts(); |
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492 end |
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493 |
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494 function startup.prosody() |
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495 -- These actions are in a strict order, as many depend on |
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496 -- previous steps to have already been performed |
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497 startup.read_config(); |
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498 startup.sanity_check(); |
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499 startup.sandbox_require(); |
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500 startup.set_function_metatable(); |
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501 startup.check_dependencies(); |
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502 startup.load_libraries(); |
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503 startup.init_global_state(); |
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504 startup.init_logging(); |
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505 startup.chdir(); |
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506 startup.add_global_prosody_functions(); |
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507 startup.read_version(); |
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508 startup.log_greeting(); |
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509 startup.log_dependency_warnings(); |
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510 startup.load_secondary_libraries(); |
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511 startup.init_http_client(); |
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512 startup.init_data_store(); |
47e3b8b6f17a
prosody, prosodyctl, util.startup: Finally factor out startup-related and common code into a separate module
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
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513 startup.init_global_protection(); |
47e3b8b6f17a
prosody, prosodyctl, util.startup: Finally factor out startup-related and common code into a separate module
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
514 startup.prepare_to_start(); |
47e3b8b6f17a
prosody, prosodyctl, util.startup: Finally factor out startup-related and common code into a separate module
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
515 -- startup.notify_started(); |
47e3b8b6f17a
prosody, prosodyctl, util.startup: Finally factor out startup-related and common code into a separate module
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
516 end |
47e3b8b6f17a
prosody, prosodyctl, util.startup: Finally factor out startup-related and common code into a separate module
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
517 |
47e3b8b6f17a
prosody, prosodyctl, util.startup: Finally factor out startup-related and common code into a separate module
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
518 return startup; |