prosody
e9090966c803
plugins/mod_auth_internal_hashed.lua

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plugins/mod_auth_internal_hashed.lua @ 5524:e9090966c803

util.prosodyctl: Initialize storagemanager on the host before initializing usermanager. This fixes brokenness when the auth provider opens the store on load (as they all do since eeea0eb2602a) (thanks nulani)
author Matthew Wild <mwild1@gmail.com>
date Sat, 27 Apr 2013 13:11:03 +0100
parent 5500:eeea0eb2602a
child 5776:bd0ff8ae98a8
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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 log = require "util.logger".init("auth_internal_hashed");
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11 local getAuthenticationDatabaseSHA1 = require "util.sasl.scram".getAuthenticationDatabaseSHA1;
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12 local usermanager = require "core.usermanager";
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13 local generate_uuid = require "util.uuid".generate;
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14 local new_sasl = require "util.sasl".new;
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15
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16 local accounts = module:open_store("accounts");
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17
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18 local to_hex;
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19 do
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20 local function replace_byte_with_hex(byte)
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21 return ("%02x"):format(byte:byte());
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22 end
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23 function to_hex(binary_string)
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24 return binary_string:gsub(".", replace_byte_with_hex);
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25 end
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26 end
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27
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28 local from_hex;
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29 do
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30 local function replace_hex_with_byte(hex)
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31 return string.char(tonumber(hex, 16));
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32 end
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33 function from_hex(hex_string)
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34 return hex_string:gsub("..", replace_hex_with_byte);
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35 end
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36 end
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38
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39 -- Default; can be set per-user
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40 local iteration_count = 4096;
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41
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42 local host = module.host;
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43 -- define auth provider
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44 local provider = {};
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45 log("debug", "initializing internal_hashed authentication provider for host '%s'", host);
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47 function provider.test_password(username, password)
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48 local credentials = accounts:get(username) or {};
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49
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50 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
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51 if credentials.password ~= password then
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52 return nil, "Auth failed. Provided password is incorrect.";
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53 end
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54
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55 if provider.set_password(username, credentials.password) == nil then
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56 return nil, "Auth failed. Could not set hashed password from plaintext.";
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57 else
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58 return true;
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59 end
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60 end
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61
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62 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
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63 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
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64 end
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65
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66 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, credentials.salt, credentials.iteration_count);
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67
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68 local stored_key_hex = to_hex(stored_key);
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69 local server_key_hex = to_hex(server_key);
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70
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71 if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key then
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72 return true;
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73 else
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74 return nil, "Auth failed. Invalid username, password, or password hash information.";
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75 end
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76 end
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77
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78 function provider.set_password(username, password)
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79 local account = accounts:get(username);
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80 if account then
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81 account.salt = account.salt or generate_uuid();
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82 account.iteration_count = account.iteration_count or iteration_count;
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83 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, account.salt, account.iteration_count);
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84 local stored_key_hex = to_hex(stored_key);
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85 local server_key_hex = to_hex(server_key);
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86
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87 account.stored_key = stored_key_hex
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88 account.server_key = server_key_hex
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89
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90 account.password = nil;
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91 return accounts:set(username, account);
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92 end
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93 return nil, "Account not available.";
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94 end
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95
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96 function provider.user_exists(username)
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97 local account = accounts:get(username);
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98 if not account then
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99 log("debug", "account not found for username '%s' at host '%s'", username, host);
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100 return nil, "Auth failed. Invalid username";
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101 end
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102 return true;
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103 end
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104
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105 function provider.users()
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106 return accounts:users();
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107 end
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108
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109 function provider.create_user(username, password)
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110 if password == nil then
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111 return accounts:set(username, {});
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112 end
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113 local salt = generate_uuid();
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114 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, salt, iteration_count);
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115 local stored_key_hex = to_hex(stored_key);
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116 local server_key_hex = to_hex(server_key);
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117 return accounts:set(username, {stored_key = stored_key_hex, server_key = server_key_hex, salt = salt, iteration_count = iteration_count});
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118 end
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119
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120 function provider.delete_user(username)
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121 return accounts:set(username, nil);
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122 end
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123
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124 function provider.get_sasl_handler()
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125 local testpass_authentication_profile = {
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126 plain_test = function(sasl, username, password, realm)
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127 return usermanager.test_password(username, realm, password), true;
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128 end,
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129 scram_sha_1 = function(sasl, username, realm)
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130 local credentials = accounts:get(username);
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131 if not credentials then return; end
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132 if credentials.password then
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133 usermanager.set_password(username, credentials.password, host);
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134 credentials = accounts:get(username);
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135 if not credentials then return; end
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136 end
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137
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parents: 4764
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138 local stored_key, server_key, iteration_count, salt = credentials.stored_key, credentials.server_key, credentials.iteration_count, credentials.salt;
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parents: 4764
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139 stored_key = stored_key and from_hex(stored_key);
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140 server_key = server_key and from_hex(server_key);
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141 return stored_key, server_key, iteration_count, salt, true;
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142 end
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143 };
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parents: 4764
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144 return new_sasl(host, testpass_authentication_profile);
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parents: 4764
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145 end
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parents: 4764
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146
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147 module:provides("auth", provider);
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148