prosody
7a15cbf23c5b
plugins/mod_auth_internal_hashed.lua

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plugins/mod_auth_internal_hashed.lua @ 3204:7a15cbf23c5b

Fix missing parameter in mod_auth_internal_hashed.
author Kim Alvefur <zash@zash.se>
date Wed, 09 Jun 2010 03:41:24 +0200
parent 3189:d686abb6b069
child 3214:a69d8021b1db
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 saltedPasswordSHA1 = require "util.sasl.scram".saltedPasswordSHA1;
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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 local prosody = _G.prosody;
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26
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27 local is_cyrus = usermanager.is_cyrus;
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28
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29 -- Default; can be set per-user
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30 local iteration_count = 4096;
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31
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32 function new_hashpass_provider(host)
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33 local provider = { name = "internal_hashed" };
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34 log("debug", "initializing hashpass authentication provider for host '%s'", host);
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35
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36 function provider.test_password(username, password)
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37 if is_cyrus(host) then return nil, "Legacy auth not supported with Cyrus SASL."; end
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38 local credentials = datamanager.load(username, host, "accounts") or {};
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39
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40 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
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41 if credentials.password ~= password then
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42 return nil, "Auth failed. Provided password is incorrect.";
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43 end
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44
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45 if provider.set_password(username, credentials.password) == nil then
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46 return nil, "Auth failed. Could not set hashed password from plaintext.";
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47 else
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48 return true;
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49 end
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50 end
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51
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52 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
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53 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
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54 end
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55
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56 local valid, binpass = saltedPasswordSHA1(password, credentials.salt, credentials.iteration_count);
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57 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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58
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59 if valid and hexpass == credentials.hashpass then
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60 return true;
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61 else
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62 return nil, "Auth failed. Invalid username, password, or password hash information.";
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63 end
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64 end
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65
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66 function provider.set_password(username, password)
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67 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
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68 local account = datamanager.load(username, host, "accounts");
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69 if account then
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70 if account.iteration_count == nil then
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71 account.iteration_count = iteration_count;
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72 end
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73
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74 if account.salt == nil then
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75 account.salt = generate_uuid();
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76 end
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77
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78 local valid, binpass = saltedPasswordSHA1(password, account.salt, account.iteration_count);
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79 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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80 account.hashpass = hexpass;
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81
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82 account.password = nil;
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83 return datamanager.store(username, host, "accounts", account);
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84 end
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85 return nil, "Account not available.";
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86 end
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87
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88 function provider.user_exists(username)
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89 if is_cyrus(host) then return true; end
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90 local account = datamanager.load(username, host, "accounts");
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91 if not account then
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92 log("debug", "account not found for username '%s' at host '%s'", username, module.host);
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93 return nil, "Auth failed. Invalid username";
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94 end
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95 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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96 log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host);
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97 return nil, "Auth failed. Password invalid.";
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98 end
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99 return true;
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100 end
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101
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102 function provider.create_user(username, password)
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103 if is_cyrus(host) then return nil, "Account creation/modification not available with Cyrus SASL."; end
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104 local salt = generate_uuid();
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105 local valid, binpass = saltedPasswordSHA1(password, salt, iteration_count);
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106 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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107 return datamanager.store(username, host, "accounts", {hashpass = hexpass, salt = salt, iteration_count = iteration_count});
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108 end
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109
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110 function provider.get_sasl_handler()
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111 local realm = module:get_option("sasl_realm") or module.host;
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112 local testpass_authentication_profile = {
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113 plain_test = function(username, password, realm)
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114 local prepped_username = nodeprep(username);
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115 if not prepped_username then
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116 log("debug", "NODEprep failed on username: %s", username);
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117 return "", nil;
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118 end
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119 return usermanager.test_password(prepped_username, password, realm), true;
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120 end,
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121 scram_sha_1 = function(username, realm)
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122 local credentials = datamanager.load(username, host, "accounts") or {};
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123 if credentials.password then
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124 usermanager.set_password(username, credentials.password, host);
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125 credentials = datamanager.load(username, host, "accounts") or {};
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126 end
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127 local salted_password, iteration_count, salt = credentials.hashpass, credentials.iteration_count, credentials.salt;
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128 salted_password = salted_password and salted_password:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
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129 return salted_password, iteration_count, salt, true;
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130 end
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131 };
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132 return new_sasl(realm, testpass_authentication_profile);
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133 end
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134
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135 function provider.is_admin(jid)
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136 local admins = config.get(host, "core", "admins");
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137 if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then
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138 jid = jid_bare(jid);
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139 for _,admin in ipairs(admins) do
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140 if admin == jid then return true; end
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141 end
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142 elseif admins then
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143 log("error", "Option 'admins' for host '%s' is not a table", host);
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144 end
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145 return is_admin(jid); -- Test whether it's a global admin instead
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146 end
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147 return provider;
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148 end
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149
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150 module:add_item("auth-provider", new_hashpass_provider(module.host));
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151