prosody
7c5c86fa552e
core/configmanager.lua

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core/configmanager.lua @ 5123:7c5c86fa552e

hostmanager, modulemanager: Ensure hosts[*].modules always exists.
author Waqas Hussain <waqas20@gmail.com>
date Thu, 13 Sep 2012 00:32:12 +0500
parent 5021:85b2689dbcfe
child 5124:a4a74a0e9b9c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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b1885732e979 GPL->MIT!
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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 local _G = _G;
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10 local setmetatable, loadfile, pcall, rawget, rawset, io, error, dofile, type, pairs, table =
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11 setmetatable, loadfile, pcall, rawget, rawset, io, error, dofile, type, pairs, table;
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12 local format, math_max = string.format, math.max;
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13
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14 local fire_event = prosody and prosody.events.fire_event or function () end;
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15
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16 local envload = require"util.envload".envload;
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17 local lfs = require "lfs";
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18 local path_sep = package.config:sub(1,1);
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19
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20 module "configmanager"
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21
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22 local parsers = {};
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23
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24 local config_mt = { __index = function (t, k) return rawget(t, "*"); end};
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25 local config = setmetatable({ ["*"] = { core = {} } }, config_mt);
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26
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27 -- When host not found, use global
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28 local host_mt = { };
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29
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30 -- When key not found in section, check key in global's section
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31 function section_mt(section_name)
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32 return { __index = function (t, k)
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33 local section = rawget(config["*"], section_name);
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34 if not section then return nil; end
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35 return section[k];
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36 end
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37 };
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38 end
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39
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40 function getconfig()
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41 return config;
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42 end
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43
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44 function get(host, section, key)
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45 if not key then
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46 section, key = "core", section;
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47 end
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48 local sec = config[host][section];
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49 if sec then
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50 return sec[key];
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51 end
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52 return nil;
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53 end
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54 function _M.rawget(host, section, key)
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55 local hostconfig = rawget(config, host);
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56 if hostconfig then
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57 local sectionconfig = rawget(hostconfig, section);
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58 if sectionconfig then
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59 return rawget(sectionconfig, key);
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60 end
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61 end
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62 end
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63
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64 local function set(config, host, section, key, value)
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65 if host and section and key then
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66 local hostconfig = rawget(config, host);
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67 if not hostconfig then
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68 hostconfig = rawset(config, host, setmetatable({}, host_mt))[host];
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69 end
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70 if not rawget(hostconfig, section) then
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71 hostconfig[section] = setmetatable({}, section_mt(section));
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72 end
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73 hostconfig[section][key] = value;
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74 return true;
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75 end
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76 return false;
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77 end
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78
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79 function _M.set(host, section, key, value)
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80 return set(config, host, section, key, value);
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81 end
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82
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83 -- Helper function to resolve relative paths (needed by config)
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84 do
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85 local rel_path_start = ".."..path_sep;
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86 function resolve_relative_path(parent_path, path)
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87 if path then
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88 -- Some normalization
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89 parent_path = parent_path:gsub("%"..path_sep.."+$", "");
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90 path = path:gsub("^%.%"..path_sep.."+", "");
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91
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92 local is_relative;
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93 if path_sep == "/" and path:sub(1,1) ~= "/" then
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94 is_relative = true;
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95 elseif path_sep == "\\" and (path:sub(1,1) ~= "/" and (path:sub(2,3) ~= ":\\" or path:sub(2,3) ~= ":/")) then
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96 is_relative = true;
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97 end
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98 if is_relative then
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99 return parent_path..path_sep..path;
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100 end
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101 end
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102 return path;
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103 end
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104 end
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105
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106 -- Helper function to convert a glob to a Lua pattern
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107 local function glob_to_pattern(glob)
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108 return "^"..glob:gsub("[%p*?]", function (c)
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109 if c == "*" then
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110 return ".*";
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111 elseif c == "?" then
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112 return ".";
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113 else
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114 return "%"..c;
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115 end
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116 end).."$";
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117 end
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118
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119 function load(filename, format)
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120 format = format or filename:match("%w+$");
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121
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122 if parsers[format] and parsers[format].load then
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123 local f, err = io.open(filename);
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124 if f then
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125 local new_config = setmetatable({ ["*"] = { core = {} } }, config_mt);
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126 local ok, err = parsers[format].load(f:read("*a"), filename, new_config);
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127 f:close();
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diff changeset
128 if ok then
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129 config = new_config;
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130 fire_event("config-reloaded", {
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131 filename = filename,
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132 format = format,
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133 config = config
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134 });
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135 end
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136 return ok, "parser", err;
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137 end
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138 return f, "file", err;
371
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139 end
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0ecfd89c2cc0 Fix for configmanager when config file can't be found
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140
376
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141 if not format then
793
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142 return nil, "file", "no parser specified";
376
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143 else
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144 return nil, "file", "no parser for "..(format);
376
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145 end
371
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146 end
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147
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148 function save(filename, format)
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149 end
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150
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151 function addparser(format, parser)
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152 if format and parser then
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153 parsers[format] = parser;
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154 end
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155 end
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156
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157 -- _M needed to avoid name clash with local 'parsers'
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158 function _M.parsers()
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159 local p = {};
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160 for format in pairs(parsers) do
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161 table.insert(p, format);
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162 end
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163 return p;
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164 end
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165
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166 -- Built-in Lua parser
371
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167 do
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Florian Zeitz <florob@babelmonkeys.de>
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diff changeset
168 local pcall, setmetatable = _G.pcall, _G.setmetatable;
85b2689dbcfe Eliminate direct setfenv usage
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169 local rawget, tostring = _G.rawget, _G.tostring;
371
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170 parsers.lua = {};
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171 function parsers.lua.load(data, config_file, config)
376
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172 local env;
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173 -- The ' = true' are needed so as not to set off __newindex when we assign the functions below
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174 env = setmetatable({
3012
6d86e26f0923 Merge configmanager->trunk
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175 Host = true, host = true, VirtualHost = true,
6d86e26f0923 Merge configmanager->trunk
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176 Component = true, component = true,
3610
2084959d4096 configmanager: Update Include and RunScript directives to support paths relative to the (current!) config file
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parents: 3609
diff changeset
177 Include = true, include = true, RunScript = true }, {
2975
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178 __index = function (t, k)
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179 return rawget(_G, k) or
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180 function (settings_table)
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181 config[__currenthost or "*"][k] = settings_table;
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182 end;
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183 end,
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184 __newindex = function (t, k, v)
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185 set(config, env.__currenthost or "*", "core", k, v);
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186 end
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187 });
371
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188
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0e3eacf135f2 configmanager: Default options appearing before Host "*" to global (fixes potential traceback)
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189 rawset(env, "__currenthost", "*") -- Default is global
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1189a29cd846 configmanager: Add VirtualHost as an alias for Host (re-applied in trunk due to previous bad merge with 0.7)
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diff changeset
190 function env.VirtualHost(name)
2861
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191 if rawget(config, name) and rawget(config[name].core, "component_module") then
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192 error(format("Host %q clashes with previously defined %s Component %q, for services use a sub-domain like conference.%s",
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193 name, config[name].core.component_module:gsub("^%a+$", { component = "external", muc = "MUC"}), name, name), 0);
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194 end
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195 rawset(env, "__currenthost", name);
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196 -- Needs at least one setting to logically exist :)
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197 set(config, name or "*", "core", "defined", true);
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198 return function (config_options)
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199 rawset(env, "__currenthost", "*"); -- Return to global scope
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200 for option_name, option_value in pairs(config_options) do
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201 set(config, name or "*", "core", option_name, option_value);
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202 end
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203 end;
371
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204 end
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diff changeset
205 env.Host, env.host = env.VirtualHost, env.VirtualHost;
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206
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207 function env.Component(name)
2861
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diff changeset
208 if rawget(config, name) and rawget(config[name].core, "defined") and not rawget(config[name].core, "component_module") then
1402615b66f8 configmanager: Error when a component and host clash hostnames
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diff changeset
209 error(format("Component %q clashes with previously defined Host %q, for services use a sub-domain like conference.%s",
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diff changeset
210 name, name, name), 0);
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211 end
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212 set(config, name, "core", "component_module", "component");
913
3e2dac84017d core.configmanager: Make components use 'component' module by default if none specified
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213 -- Don't load the global modules by default
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214 set(config, name, "core", "load_global_modules", false);
913
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diff changeset
215 rawset(env, "__currenthost", name);
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parents: 3384
diff changeset
216 local function handle_config_options(config_options)
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parents: 3384
diff changeset
217 rawset(env, "__currenthost", "*"); -- Return to global scope
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diff changeset
218 for option_name, option_value in pairs(config_options) do
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diff changeset
219 set(config, name or "*", "core", option_name, option_value);
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diff changeset
220 end
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diff changeset
221 end
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parents: 896
diff changeset
222
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diff changeset
223 return function (module)
857
49298263f241 core.configmanager: Small fix to check validity of Component definitions
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parents: 795
diff changeset
224 if type(module) == "string" then
3573
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diff changeset
225 set(config, name, "core", "component_module", module);
3515
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diff changeset
226 return handle_config_options;
857
49298263f241 core.configmanager: Small fix to check validity of Component definitions
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parents: 795
diff changeset
227 end
3515
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diff changeset
228 return handle_config_options(module);
750
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diff changeset
229 end
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diff changeset
230 end
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parents: 615
diff changeset
231 env.component = env.Component;
fbfcf8c1c830 configmanager: Add support for defining components
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diff changeset
232
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diff changeset
233 function env.Include(file, wildcard)
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diff changeset
234 if file:match("[*?]") then
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
235 local path_pos, glob = file:match("()([^"..path_sep.."]+)$");
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diff changeset
236 local path = file:sub(1, math_max(path_pos-2,0));
3929
7cb03d67101b configmanager: Filenames without a path are also relative to the config file path, not the current working directory
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parents: 3905
diff changeset
237 local config_path = config_file:gsub("[^"..path_sep.."]+$", "");
3905
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diff changeset
238 if #path > 0 then
3929
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diff changeset
239 path = resolve_relative_path(config_path, path);
3905
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diff changeset
240 else
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diff changeset
241 path = config_path;
3905
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diff changeset
242 end
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parents: 3780
diff changeset
243 local patt = glob_to_pattern(glob);
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diff changeset
244 for f in lfs.dir(path) do
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
245 if f:sub(1,1) ~= "." and f:match(patt) then
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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parents: 3780
diff changeset
246 env.Include(path..path_sep..f);
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diff changeset
247 end
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diff changeset
248 end
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diff changeset
249 else
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
250 local f, err = io.open(file);
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
251 if f then
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
252 local data = f:read("*a");
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
253 local file = resolve_relative_path(config_file:gsub("[^"..path_sep.."]+$", ""), file);
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diff changeset
254 local ret, err = parsers.lua.load(data, file, config);
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diff changeset
255 if not ret then error(err:gsub("%[string.-%]", file), 0); end
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diff changeset
256 end
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
257 if not f then error("Error loading included "..file..": "..err, 0); end
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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parents: 3780
diff changeset
258 return f, err;
794
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
259 end
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
260 end
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
261 env.include = env.Include;
912dc389935a Add Include command to include extra configuration files from the main one
Matthew Wild <mwild1@gmail.com>
parents: 793
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262
3610
2084959d4096 configmanager: Update Include and RunScript directives to support paths relative to the (current!) config file
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263 function env.RunScript(file)
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264 return dofile(resolve_relative_path(config_file:gsub("[^"..path_sep.."]+$", ""), file));
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parents: 3609
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265 end
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266
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85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
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267 local chunk, err = envload(data, "@"..config_file, env);
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268
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269 if not chunk then
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270 return nil, err;
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271 end
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272
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parents:
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273 local ok, err = pcall(chunk);
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274
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275 if not ok then
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276 return nil, err;
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277 end
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278
3613
f617718d2221 configmanager: Change parser API again to pass a config table to insert settings to. Fixes Include(). (Thanks Zash/answerman)
Matthew Wild <mwild1@gmail.com>
parents: 3610
diff changeset
279 return true;
371
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280 end
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281
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282 end
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283
466
0ecfd89c2cc0 Fix for configmanager when config file can't be found
Matthew Wild <mwild1@gmail.com>
parents: 376
diff changeset
284 return _M;