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net/http.lua @ 5614:2a3341e7ed32
mod_muc: Fix incorrect variable name
author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 21 May 2013 10:10:28 +0100 |
parent | 5505:0b6a99e6c1b1 |
child | 5714:520671c3159c |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 Waqas Hussain |
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4 -- |
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5 -- This project is MIT/X11 licensed. Please see the |
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6 -- COPYING file in the source package for more information. |
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7 -- |
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8 |
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9 local socket = require "socket" |
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10 local b64 = require "util.encodings".base64.encode; |
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11 local url = require "socket.url" |
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12 local httpstream_new = require "net.http.parser".new; |
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13 local util_http = require "util.http"; |
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14 |
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15 local ssl_available = pcall(require, "ssl"); |
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16 |
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17 local server = require "net.server" |
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18 |
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19 local t_insert, t_concat = table.insert, table.concat; |
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20 local pairs = pairs; |
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21 local tonumber, tostring, xpcall, select, traceback = |
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22 tonumber, tostring, xpcall, select, debug.traceback; |
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23 |
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24 local log = require "util.logger".init("http"); |
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25 |
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26 module "http" |
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27 |
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28 local requests = {}; -- Open requests |
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29 |
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30 local listener = { default_port = 80, default_mode = "*a" }; |
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31 |
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32 function listener.onconnect(conn) |
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33 local req = requests[conn]; |
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34 -- Send the request |
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35 local request_line = { req.method or "GET", " ", req.path, " HTTP/1.1\r\n" }; |
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36 if req.query then |
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37 t_insert(request_line, 4, "?"..req.query); |
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38 end |
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39 |
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40 conn:write(t_concat(request_line)); |
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41 local t = { [2] = ": ", [4] = "\r\n" }; |
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42 for k, v in pairs(req.headers) do |
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43 t[1], t[3] = k, v; |
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44 conn:write(t_concat(t)); |
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45 end |
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46 conn:write("\r\n"); |
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47 |
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48 if req.body then |
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49 conn:write(req.body); |
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50 end |
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51 end |
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52 |
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53 function listener.onincoming(conn, data) |
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54 local request = requests[conn]; |
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55 |
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56 if not request then |
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57 log("warn", "Received response from connection %s with no request attached!", tostring(conn)); |
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58 return; |
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59 end |
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60 |
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61 if data and request.reader then |
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62 request:reader(data); |
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63 end |
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64 end |
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65 |
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66 function listener.ondisconnect(conn, err) |
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67 local request = requests[conn]; |
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68 if request and request.conn then |
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69 request:reader(nil, err); |
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70 end |
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71 requests[conn] = nil; |
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72 end |
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73 |
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74 local function request_reader(request, data, err) |
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75 if not request.parser then |
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76 local function error_cb(reason) |
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77 if request.callback then |
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78 request.callback(reason or "connection-closed", 0, request); |
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79 request.callback = nil; |
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80 end |
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81 destroy_request(request); |
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82 end |
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83 |
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84 if not data then |
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85 error_cb(err); |
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86 return; |
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87 end |
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88 |
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89 local function success_cb(r) |
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90 if request.callback then |
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91 request.callback(r.body, r.code, r, request); |
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92 request.callback = nil; |
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93 end |
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94 destroy_request(request); |
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95 end |
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96 local function options_cb() |
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97 return request; |
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98 end |
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99 request.parser = httpstream_new(success_cb, error_cb, "client", options_cb); |
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100 end |
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101 request.parser:feed(data); |
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102 end |
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103 |
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104 local function handleerr(err) log("error", "Traceback[http]: %s", traceback(tostring(err), 2)); end |
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105 function request(u, ex, callback) |
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106 local req = url.parse(u); |
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107 |
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108 if not (req and req.host) then |
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109 callback(nil, 0, req); |
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110 return nil, "invalid-url"; |
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111 end |
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112 |
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113 if not req.path then |
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114 req.path = "/"; |
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115 end |
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116 |
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117 local method, headers, body; |
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118 |
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119 headers = { |
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120 ["Host"] = req.host; |
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121 ["User-Agent"] = "Prosody XMPP Server"; |
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122 }; |
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123 |
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124 if req.userinfo then |
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125 headers["Authorization"] = "Basic "..b64(req.userinfo); |
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126 end |
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127 |
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128 if ex then |
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129 req.onlystatus = ex.onlystatus; |
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130 body = ex.body; |
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131 if body then |
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132 method = "POST"; |
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133 headers["Content-Length"] = tostring(#body); |
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134 headers["Content-Type"] = "application/x-www-form-urlencoded"; |
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135 end |
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136 if ex.method then method = ex.method; end |
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137 if ex.headers then |
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138 for k, v in pairs(ex.headers) do |
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139 headers[k] = v; |
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140 end |
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141 end |
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142 end |
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143 |
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144 -- Attach to request object |
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145 req.method, req.headers, req.body = method, headers, body; |
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146 |
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147 local using_https = req.scheme == "https"; |
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148 if using_https and not ssl_available then |
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149 error("SSL not available, unable to contact https URL"); |
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150 end |
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151 local port = tonumber(req.port) or (using_https and 443 or 80); |
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152 |
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153 -- Connect the socket, and wrap it with net.server |
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154 local conn = socket.tcp(); |
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155 conn:settimeout(10); |
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156 local ok, err = conn:connect(req.host, port); |
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157 if not ok and err ~= "timeout" then |
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158 callback(nil, 0, req); |
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159 return nil, err; |
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160 end |
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161 |
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162 local sslctx = false; |
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163 if using_https then |
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164 sslctx = ex and ex.sslctx or { mode = "client", protocol = "sslv23", options = { "no_sslv2" } }; |
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165 end |
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166 |
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167 req.handler, req.conn = server.wrapclient(conn, req.host, port, listener, "*a", sslctx); |
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168 req.write = function (...) return req.handler:write(...); end |
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169 |
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170 req.callback = function (content, code, request, response) log("debug", "Calling callback, status %s", code or "---"); return select(2, xpcall(function () return callback(content, code, request, response) end, handleerr)); end |
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171 req.reader = request_reader; |
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172 req.state = "status"; |
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173 |
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174 requests[req.handler] = req; |
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175 return req; |
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176 end |
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177 |
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178 function destroy_request(request) |
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179 if request.conn then |
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180 request.conn = nil; |
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181 request.handler:close() |
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182 end |
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183 end |
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184 |
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185 local urlencode, urldecode = util_http.urlencode, util_http.urldecode; |
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186 local formencode, formdecode = util_http.formencode, util_http.formdecode; |
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187 |
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188 _M.urlencode, _M.urldecode = urlencode, urldecode; |
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189 _M.formencode, _M.formdecode = formencode, formdecode; |
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190 |
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191 return _M; |