Mercurial > prosody-modules
annotate mod_auth_http_cookie/mod_auth_http_cookie.lua @ 3395:eaf0b1e95016
mod_csi: Backport 989cf872d5c0 from Prosody 0.11 to preserve compatibility
author | Matthew Wild <mwild1@gmail.com> |
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date | Wed, 05 Dec 2018 14:12:00 +0000 |
parents | b7aa8630438e |
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rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2013 Matthew Wild |
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3 -- Copyright (C) 2008-2013 Waqas Hussain |
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4 -- Copyright (C) 2014 Kim Alvefur |
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5 -- |
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6 -- This project is MIT/X11 licensed. Please see the |
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7 -- COPYING file in the source package for more information. |
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8 -- |
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9 |
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10 local new_sasl = require "util.sasl".new; |
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11 local base64 = require "util.encodings".base64.encode; |
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12 local have_async, async = pcall(require, "util.async"); |
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13 |
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14 local nodeprep = require "util.encodings".stringprep.nodeprep; |
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15 |
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16 local log = module._log; |
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17 local host = module.host; |
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18 |
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19 local password_auth_url = module:get_option_string("http_auth_url", ""):gsub("$host", host); |
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20 |
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21 local cookie_auth_url = module:get_option_string("http_cookie_auth_url"); |
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22 if cookie_auth_url then |
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23 cookie_auth_url = cookie_auth_url:gsub("$host", host); |
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24 end |
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25 |
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26 local external_needs_authzid = cookie_auth_url and cookie_auth_url:match("$user"); |
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27 |
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28 if password_auth_url == "" and not cookie_auth_url then error("http_auth_url or http_cookie_auth_url required") end |
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29 |
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30 |
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31 local provider = {}; |
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32 |
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33 -- globals required by socket.http |
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34 if rawget(_G, "PROXY") == nil then |
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35 rawset(_G, "PROXY", false) |
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36 end |
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37 if rawget(_G, "base_parsed") == nil then |
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38 rawset(_G, "base_parsed", false) |
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39 end |
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40 if not have_async then -- FINE! Set your globals then |
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41 prosody.unlock_globals() |
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42 require "ltn12" |
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43 require "socket" |
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44 require "socket.http" |
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45 require "ssl.https" |
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46 prosody.lock_globals() |
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47 end |
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48 |
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49 local function async_http_request(url, headers) |
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50 module:log("debug", "async_http_auth()"); |
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51 local http = require "net.http"; |
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52 local wait, done = async.waiter(); |
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53 local content, code, request, response; |
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54 local ex = { |
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55 headers = headers; |
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56 } |
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57 local function cb(content_, code_, request_, response_) |
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58 content, code, request, response = content_, code_, request_, response_; |
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59 done(); |
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60 end |
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61 http.request(url, ex, cb); |
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62 wait(); |
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63 log("debug", "response code %s", tostring(code)); |
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64 if code >= 200 and code <= 299 then |
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65 return true, content; |
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66 end |
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67 return nil; |
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68 end |
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69 |
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70 local function sync_http_request(url, headers) |
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71 module:log("debug", "sync_http_auth()"); |
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72 require "ltn12"; |
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73 local http = require "socket.http"; |
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74 local https = require "ssl.https"; |
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75 local request; |
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76 if string.sub(url, 1, string.len('https')) == 'https' then |
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77 request = https.request; |
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78 else |
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79 request = http.request; |
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80 end |
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81 local body_chunks = {}; |
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82 local _, code, headers, status = request{ |
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83 url = url, |
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84 headers = headers; |
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85 sink = ltn12.sink.table(body_chunks); |
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86 }; |
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87 log("debug", "response code %s %s", type(code), tostring(code)); |
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88 if type(code) == "number" and code >= 200 and code <= 299 then |
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89 log("debug", "success") |
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90 return true, table.concat(body_chunks); |
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91 end |
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92 return nil; |
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93 end |
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94 |
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95 local http_request = have_async and async_http_request or sync_http_request; |
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96 |
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97 function http_test_password(username, password) |
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98 local url = password_auth_url:gsub("$user", username):gsub("$password", password); |
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99 log("debug", "Testing password for user %s at host %s with URL %s", username, host, url); |
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100 local ok = (http_request(url, { Authorization = "Basic "..base64(username..":"..password); })); |
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101 if not ok then |
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102 return nil, "not authorized"; |
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103 end |
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104 return true; |
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105 end |
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106 |
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107 function http_test_cookie(cookie, username) |
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108 local url = external_needs_authzid and cookie_auth_url:gsub("$user", username) or cookie_auth_url; |
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109 log("debug", "Testing cookie auth for user %s at host %s with URL %s", username or "<unknown>", host, url); |
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110 local ok, resp = http_request(url, { Cookie = cookie; }); |
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111 if not ok then |
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112 return nil, "not authorized"; |
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113 end |
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114 |
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115 return external_needs_authzid or resp; |
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116 end |
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117 |
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118 function provider.test_password(username, password) |
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119 return http_test_password(username, password); |
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120 end |
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121 |
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122 function provider.users() |
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123 return function() |
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124 return nil; |
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125 end |
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126 end |
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127 |
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128 function provider.set_password(username, password) |
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129 return nil, "Changing passwords not supported"; |
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130 end |
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131 |
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132 function provider.user_exists(username) |
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133 return true; |
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134 end |
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135 |
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136 function provider.create_user(username, password) |
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137 return nil, "User creation not supported"; |
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138 end |
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139 |
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140 function provider.delete_user(username) |
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141 return nil , "User deletion not supported"; |
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142 end |
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143 |
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144 local function get_session_cookies(session) |
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145 local request = session.websocket_request; -- WebSockets |
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146 if not request and session.requests then -- BOSH |
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147 request = session.requests[1]; |
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148 end |
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149 if not request and session.conn._http_open_response then -- Fallback BOSH |
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150 local response = session.conn._http_open_response; |
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151 request = response and response.request; |
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152 end |
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153 if request then |
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154 return request.headers.cookie; |
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155 end |
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156 end |
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157 |
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158 function provider.get_sasl_handler(session) |
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159 local cookie = cookie_auth_url and get_session_cookies(session); |
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160 log("debug", "Request cookie: %s", cookie); |
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161 return new_sasl(host, { |
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162 plain_test = function(sasl, username, password, realm) |
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163 return provider.test_password(username, password), true; |
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164 end; |
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165 external = cookie and function (authzid) |
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166 if external_needs_authzid then |
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167 -- Authorize the username provided by the client, using request cookie |
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168 if authzid ~= "" then |
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169 module:log("warn", "Client requested authzid, but cookie auth URL does not contain $user variable"); |
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170 return nil; |
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171 end |
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172 local success = http_test_cookie(cookie); |
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173 if not success then |
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174 return nil; |
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175 end |
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176 return nodeprep(authzid), true; |
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177 else |
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178 -- Authorize client using request cookie, username comes from auth server |
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179 if authzid == "" then |
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180 module:log("warn", "Client did not provide authzid, but cookie auth URL contains $user variable"); |
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181 return nil; |
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182 end |
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183 local unprepped_username = http_test_cookie(cookie, nodeprep(authzid)); |
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184 local username = nodeprep(unprepped_username); |
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185 if not username then |
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186 if unprepped_username then |
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187 log("warn", "Username supplied by cookie_auth_url is not valid for XMPP"); |
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188 end |
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189 return nil; |
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190 end |
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191 return username, true; |
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192 end; |
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193 end; |
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194 }); |
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195 end |
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196 |
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197 module:provides("auth", provider); |