prosody
f521e89539da
util/xmlrpc.lua

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util/xmlrpc.lua @ 2501:f521e89539da

Merge with trunk.
author Waqas Hussain <waqas20@gmail.com>
date Tue, 26 Jan 2010 02:10:25 +0500
parent 1554:06030af44fad
child 2923:b7049746bd29
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
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10 local pairs = pairs;
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11 local type = type;
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12 local error = error;
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13 local t_concat = table.concat;
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14 local t_insert = table.insert;
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15 local tostring = tostring;
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16 local tonumber = tonumber;
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17 local select = select;
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18 local st = require "util.stanza";
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19
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20 module "xmlrpc"
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21
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22 local _lua_to_xmlrpc;
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23 local map = {
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24 table=function(stanza, object)
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25 stanza:tag("struct");
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26 for name, value in pairs(object) do
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27 stanza:tag("member");
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28 stanza:tag("name"):text(tostring(name)):up();
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29 stanza:tag("value");
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30 _lua_to_xmlrpc(stanza, value);
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31 stanza:up();
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32 stanza:up();
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33 end
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34 stanza:up();
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35 end;
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36 boolean=function(stanza, object)
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37 stanza:tag("boolean"):text(object and "1" or "0"):up();
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38 end;
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39 string=function(stanza, object)
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40 stanza:tag("string"):text(object):up();
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41 end;
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42 number=function(stanza, object)
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43 stanza:tag("int"):text(tostring(object)):up();
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44 end;
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45 ["nil"]=function(stanza, object) -- nil extension
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46 stanza:tag("nil"):up();
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47 end;
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48 };
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49 _lua_to_xmlrpc = function(stanza, object)
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50 local h = map[type(object)];
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51 if h then
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52 h(stanza, object);
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53 else
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54 error("Type not supported by XML-RPC: " .. type(object));
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55 end
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56 end
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57 function create_response(object)
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58 local stanza = st.stanza("methodResponse"):tag("params"):tag("param"):tag("value");
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59 _lua_to_xmlrpc(stanza, object);
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60 stanza:up():up():up();
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61 return stanza;
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62 end
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63 function create_error_response(faultCode, faultString)
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64 local stanza = st.stanza("methodResponse"):tag("fault"):tag("value");
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65 _lua_to_xmlrpc(stanza, {faultCode=faultCode, faultString=faultString});
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66 stanza:up():up();
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67 return stanza;
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68 end
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69
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70 function create_request(method_name, ...)
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71 local stanza = st.stanza("methodCall")
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72 :tag("methodName"):text(method_name):up()
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73 :tag("params");
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74 for i=1,select('#', ...) do
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75 stanza:tag("param"):tag("value");
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76 _lua_to_xmlrpc(stanza, select(i, ...));
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77 stanza:up():up();
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78 end
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79 stanza:up():up():up();
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80 return stanza;
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81 end
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82
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83 local _xmlrpc_to_lua;
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84 local int_parse = function(stanza)
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85 if #stanza.tags ~= 0 or #stanza == 0 then error("<"..stanza.name.."> must have a single text child"); end
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86 local n = tonumber(t_concat(stanza));
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87 if n then return n; end
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88 error("Failed to parse content of <"..stanza.name..">");
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89 end
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90 local rmap = {
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91 methodCall=function(stanza)
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92 if #stanza.tags ~= 2 then error("<methodCall> must have exactly two subtags"); end -- FIXME <params> is optional
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93 if stanza.tags[1].name ~= "methodName" then error("First <methodCall> child tag must be <methodName>") end
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94 if stanza.tags[2].name ~= "params" then error("Second <methodCall> child tag must be <params>") end
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95 return _xmlrpc_to_lua(stanza.tags[1]), _xmlrpc_to_lua(stanza.tags[2]);
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96 end;
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97 methodName=function(stanza)
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98 if #stanza.tags ~= 0 then error("<methodName> must not have any subtags"); end
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99 if #stanza == 0 then error("<methodName> must have text content"); end
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100 return t_concat(stanza);
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101 end;
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102 params=function(stanza)
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103 local t = {};
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104 for _, child in pairs(stanza.tags) do
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105 if child.name ~= "param" then error("<params> can only have <param> children"); end;
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106 t_insert(t, _xmlrpc_to_lua(child));
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107 end
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108 return t;
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109 end;
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110 param=function(stanza)
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111 if not(#stanza.tags == 1 and stanza.tags[1].name == "value") then error("<param> must have exactly one <value> child"); end
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112 return _xmlrpc_to_lua(stanza.tags[1]);
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113 end;
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114 value=function(stanza)
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115 if #stanza.tags == 0 then return t_concat(stanza); end
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116 if #stanza.tags ~= 1 then error("<value> must have a single child"); end
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117 return _xmlrpc_to_lua(stanza.tags[1]);
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118 end;
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119 int=int_parse;
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120 i4=int_parse;
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121 double=int_parse;
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122 boolean=function(stanza)
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123 if #stanza.tags ~= 0 or #stanza == 0 then error("<boolean> must have a single text child"); end
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124 local b = t_concat(stanza);
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125 if b ~= "1" and b ~= "0" then error("Failed to parse content of <boolean>"); end
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126 return b == "1" and true or false;
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127 end;
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128 string=function(stanza)
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129 if #stanza.tags ~= 0 then error("<string> must have a single text child"); end
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130 return t_concat(stanza);
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131 end;
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132 array=function(stanza)
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133 if #stanza.tags ~= 1 then error("<array> must have a single <data> child"); end
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134 return _xmlrpc_to_lua(stanza.tags[1]);
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135 end;
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136 data=function(stanza)
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137 local t = {};
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138 for _,child in pairs(stanza.tags) do
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139 if child.name ~= "value" then error("<data> can only have <value> children"); end
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140 t_insert(t, _xmlrpc_to_lua(child));
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141 end
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142 return t;
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143 end;
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144 struct=function(stanza)
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145 local t = {};
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146 for _,child in pairs(stanza.tags) do
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147 if child.name ~= "member" then error("<struct> can only have <member> children"); end
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148 local name, value = _xmlrpc_to_lua(child);
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149 t[name] = value;
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150 end
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151 return t;
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152 end;
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153 member=function(stanza)
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154 if #stanza.tags ~= 2 then error("<member> must have exactly two subtags"); end -- FIXME <params> is optional
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155 if stanza.tags[1].name ~= "name" then error("First <member> child tag must be <name>") end
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156 if stanza.tags[2].name ~= "value" then error("Second <member> child tag must be <value>") end
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157 return _xmlrpc_to_lua(stanza.tags[1]), _xmlrpc_to_lua(stanza.tags[2]);
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158 end;
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159 name=function(stanza)
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160 if #stanza.tags ~= 0 then error("<name> must have a single text child"); end
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161 local n = t_concat(stanza)
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162 if tostring(tonumber(n)) == n then n = tonumber(n); end
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163 return n;
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164 end;
888
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165 ["nil"]=function(stanza) -- nil extension
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166 return nil;
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167 end;
874
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168 }
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169 _xmlrpc_to_lua = function(stanza)
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170 local h = rmap[stanza.name];
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171 if h then
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172 return h(stanza);
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173 else
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174 error("Unknown element: "..stanza.name);
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175 end
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176 end
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177 function translate_request(stanza)
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178 if stanza.name ~= "methodCall" then error("XML-RPC requests must have <methodCall> as root element"); end
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179 return _xmlrpc_to_lua(stanza);
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180 end
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181
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182 return _M;