prosody
a69d8021b1db
plugins/mod_auth_internal_hashed.lua

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plugins/mod_auth_internal_hashed.lua @ 3214:a69d8021b1db

Merge with Tobias.
author Waqas Hussain <waqas20@gmail.com>
date Wed, 09 Jun 2010 21:34:32 +0500
parent 3204:7a15cbf23c5b
parent 3213:c85bba8bd41a
child 3216:d4d0519cd0c1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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db9def53fe9c Check in mod_hashpassauth -- works!
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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 -- Copyright (C) 2010 Jeff Mitchell
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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 datamanager = require "util.datamanager";
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11 local log = require "util.logger".init("usermanager");
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12 local type = type;
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13 local error = error;
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14 local ipairs = ipairs;
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15 local hashes = require "util.hashes";
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16 local jid_bare = require "util.jid".bare;
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17 local getAuthenticationDatabaseSHA1 = require "util.sasl.scram".getAuthenticationDatabaseSHA1;
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18 local config = require "core.configmanager";
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19 local usermanager = require "core.usermanager";
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20 local generate_uuid = require "util.uuid".generate;
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21 local new_sasl = require "util.sasl".new;
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22 local nodeprep = require "util.encodings".stringprep.nodeprep;
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23 local hosts = hosts;
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24
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25 -- TODO: remove these two lines in near future
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26 local hmac_sha1 = require "util.hmac".sha1;
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27 local sha1 = require "util.hashes".sha1;
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28
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29 local prosody = _G.prosody;
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30
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31 local is_cyrus = usermanager.is_cyrus;
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32
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33 -- Default; can be set per-user
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34 local iteration_count = 4096;
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35
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36 function new_hashpass_provider(host)
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37 local provider = { name = "internal_hashed" };
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38 log("debug", "initializing hashpass authentication provider for host '%s'", host);
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39
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40 function provider.test_password(username, password)
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41 if is_cyrus(host) then return nil, "Legacy auth not supported with Cyrus SASL."; end
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42 local credentials = datamanager.load(username, host, "accounts") or {};
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43
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44 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
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45 if credentials.password ~= password then
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46 return nil, "Auth failed. Provided password is incorrect.";
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47 end
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48
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49 if provider.set_password(username, credentials.password) == nil then
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50 return nil, "Auth failed. Could not set hashed password from plaintext.";
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51 else
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52 return true;
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53 end
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54 end
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55
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56 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
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57 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
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58 end
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59
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60 local valid, stored_key, server_key
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61
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62 -- convert hexpass to stored_key and server_key
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63 -- TODO: remove this in near future
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64 if credentials.hashpass then
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65 valid = true;
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66 local salted_password = credentials.hashpass:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
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67 credentials.stored_key = sha1(hmac_sha1(salted_password, "Client Key")):gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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68 credentials.server_key = hmac_sha1(salted_password, "Server Key"):gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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69 credentials.hashpass = nil
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70 datamanager.store(username, host, "accounts", credentials);
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71 end
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72
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73 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, credentials.salt, credentials.iteration_count);
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74
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75 local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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76 local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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77
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78 if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key then
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79 return true;
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80 else
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81 return nil, "Auth failed. Invalid username, password, or password hash information.";
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82 end
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83 end
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84
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85 function provider.set_password(username, password)
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86 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
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87 local account = datamanager.load(username, host, "accounts");
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88 if account then
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89 account.salt = account.salt or generate_uuid();
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90 account.iteration_count = account.iteration_count or iteration_count;
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91 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, account.salt, account.iteration_count);
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92 local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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93 local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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94
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95 account.stored_key = stored_key_hex
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96 account.server_key = server_key_hex
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97
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98 account.password = nil;
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99 return datamanager.store(username, host, "accounts", account);
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100 end
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101 return nil, "Account not available.";
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102 end
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103
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104 function provider.user_exists(username)
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105 if is_cyrus(host) then return true; end
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106 local account = datamanager.load(username, host, "accounts");
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107 if not account then
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108 log("debug", "account not found for username '%s' at host '%s'", username, module.host);
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109 return nil, "Auth failed. Invalid username";
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110 end
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111 if (account.hashpass == nil or string.len(account.hashpass) == 0) and (account.password == nil or string.len(account.password) == 0) then
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112 log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host);
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113 return nil, "Auth failed. Password invalid.";
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114 end
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115 return true;
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116 end
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117
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118 function provider.create_user(username, password)
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119 if is_cyrus(host) then return nil, "Account creation/modification not available with Cyrus SASL."; end
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120 local salt = generate_uuid();
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121 local valid, stored_key, server_key = saltedPasswordSHA1(password, salt, iteration_count);
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122 local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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123 local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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124 return datamanager.store(username, host, "accounts", {stored_key = stored_key_hex, server_key = server_key_hex, salt = salt, iteration_count = iteration_count});
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125 end
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126
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127 function provider.get_sasl_handler()
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128 local realm = module:get_option("sasl_realm") or module.host;
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129 local testpass_authentication_profile = {
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130 plain_test = function(username, password, realm)
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131 local prepped_username = nodeprep(username);
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132 if not prepped_username then
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133 log("debug", "NODEprep failed on username: %s", username);
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134 return "", nil;
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135 end
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136 return usermanager.test_password(prepped_username, password, realm), true;
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137 end,
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138 scram_sha_1 = function(username, realm)
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139 local credentials = datamanager.load(username, host, "accounts") or {};
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140 if credentials.password then
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141 usermanager.set_password(username, credentials.password, host);
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142 credentials = datamanager.load(username, host, "accounts") or {};
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143 end
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144
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145 -- convert hexpass to stored_key and server_key
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146 -- TODO: remove this in near future
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147 if credentials.hashpass then
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148 local salted_password = credentials.hashpass:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
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149 credentials.stored_key = sha1(hmac_sha1(salted_password, "Client Key")):gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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150 credentials.server_key = hmac_sha1(salted_password, "Server Key"):gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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151 credentials.hashpass = nil
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152 datamanager.store(username, host, "accounts", credentials);
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153 end
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154
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155 local stored_key, server_key, iteration_count, salt = credentials.stored_key, credentials.server_key, credentials.iteration_count, credentials.salt;
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156 stored_key = stored_key and stored_key:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
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157 server_key = server_key and server_key:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
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158 return stored_key, server_key, iteration_count, salt, true;
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159 end
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160 };
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161 return new_sasl(realm, testpass_authentication_profile);
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162 end
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163
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164 function provider.is_admin(jid)
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165 local admins = config.get(host, "core", "admins");
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166 if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then
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167 jid = jid_bare(jid);
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168 for _,admin in ipairs(admins) do
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169 if admin == jid then return true; end
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170 end
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171 elseif admins then
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172 log("error", "Option 'admins' for host '%s' is not a table", host);
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173 end
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174 return is_admin(jid); -- Test whether it's a global admin instead
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175 end
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176 return provider;
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177 end
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178
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179 module:add_item("auth-provider", new_hashpass_provider(module.host));
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180