prosody
3413fea9e6db
plugins/mod_auth_internal_hashed.lua

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plugins/mod_auth_internal_hashed.lua @ 11539:3413fea9e6db 0.11

util.startup: Set more aggressive defaults for GC Testing has demonstrated that the default GC parameters are not sufficient to prevent runaway memory growth when running under Lua 5.2 and Lua 5.3. Setting the GC speed to 500 was tested on Lua versions 5.1->5.4 and did not display unbounded memory growth.
author Matthew Wild <mwild1@gmail.com>
date Fri, 07 May 2021 16:41:39 +0100
parent 10914:0d7d71dee0a0
child 10916:c7ed8f754033
child 11544:c98aebe601f9
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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 max = math.max;
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11
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12 local getAuthenticationDatabaseSHA1 = require "util.sasl.scram".getAuthenticationDatabaseSHA1;
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13 local usermanager = require "core.usermanager";
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14 local generate_uuid = require "util.uuid".generate;
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15 local new_sasl = require "util.sasl".new;
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16 local hex = require"util.hex";
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17 local to_hex, from_hex = hex.to, hex.from;
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18 local saslprep = require "util.encodings".stringprep.saslprep;
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19
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20 local log = module._log;
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21 local host = module.host;
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23 local accounts = module:open_store("accounts");
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27 -- Default; can be set per-user
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28 local default_iteration_count = 4096;
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30 -- define auth provider
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31 local provider = {};
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33 function provider.test_password(username, password)
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34 log("debug", "test password for user '%s'", username);
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35 local credentials = accounts:get(username) or {};
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36 password = saslprep(password);
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37 if not password then
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38 return nil, "Password fails SASLprep.";
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39 end
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41 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
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42 if saslprep(credentials.password) ~= password then
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43 return nil, "Auth failed. Provided password is incorrect.";
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44 end
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46 if provider.set_password(username, credentials.password) == nil then
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47 return nil, "Auth failed. Could not set hashed password from plaintext.";
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48 else
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49 return true;
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50 end
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51 end
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52
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53 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
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54 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
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55 end
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56
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57 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, credentials.salt, credentials.iteration_count);
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58
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59 local stored_key_hex = to_hex(stored_key);
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60 local server_key_hex = to_hex(server_key);
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61
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62 if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key then
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63 return true;
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64 else
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65 return nil, "Auth failed. Invalid username, password, or password hash information.";
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66 end
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67 end
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68
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69 function provider.set_password(username, password)
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70 log("debug", "set_password for username '%s'", username);
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71 local account = accounts:get(username);
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72 if account then
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73 account.salt = generate_uuid();
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74 account.iteration_count = max(account.iteration_count or 0, default_iteration_count);
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75 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, account.salt, account.iteration_count);
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76 if not valid then
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77 return valid, stored_key;
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78 end
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79 local stored_key_hex = to_hex(stored_key);
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80 local server_key_hex = to_hex(server_key);
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81
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82 account.stored_key = stored_key_hex
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83 account.server_key = server_key_hex
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84
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85 account.password = nil;
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86 return accounts:set(username, account);
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87 end
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88 return nil, "Account not available.";
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89 end
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90
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91 function provider.user_exists(username)
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92 local account = accounts:get(username);
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93 if not account then
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94 log("debug", "account not found for username '%s'", username);
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95 return nil, "Auth failed. Invalid username";
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96 end
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97 return true;
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98 end
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99
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100 function provider.users()
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101 return accounts:users();
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102 end
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103
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104 function provider.create_user(username, password)
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105 if password == nil then
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106 return accounts:set(username, {});
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107 end
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108 local salt = generate_uuid();
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109 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, salt, default_iteration_count);
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110 if not valid then
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111 return valid, stored_key;
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112 end
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113 local stored_key_hex = to_hex(stored_key);
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114 local server_key_hex = to_hex(server_key);
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115 return accounts:set(username, {
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116 stored_key = stored_key_hex, server_key = server_key_hex,
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117 salt = salt, iteration_count = default_iteration_count
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118 });
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119 end
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120
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121 function provider.delete_user(username)
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122 return accounts:set(username, nil);
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123 end
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124
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125 function provider.get_sasl_handler()
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126 local testpass_authentication_profile = {
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127 plain_test = function(_, username, password, realm)
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128 return usermanager.test_password(username, realm, password), true;
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129 end,
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130 scram_sha_1 = function(_, username)
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131 local credentials = accounts:get(username);
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132 if not credentials then return; end
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133 if credentials.password then
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134 if provider.set_password(username, credentials.password) == nil then
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135 return nil, "Auth failed. Could not set hashed password from plaintext.";
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136 end
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137 credentials = accounts:get(username);
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138 if not credentials then return; end
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139 end
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Florian Zeitz <florob@babelmonkeys.de>
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140
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diff changeset
141 local stored_key, server_key = credentials.stored_key, credentials.server_key;
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142 local iteration_count, salt = credentials.iteration_count, credentials.salt;
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143 stored_key = stored_key and from_hex(stored_key);
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144 server_key = server_key and from_hex(server_key);
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145 return stored_key, server_key, iteration_count, salt, true;
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146 end
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147 };
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148 return new_sasl(host, testpass_authentication_profile);
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149 end
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150
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151 module:provides("auth", provider);
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152