prosody
649acbfbf7fe
plugins/mod_auth_internal_hashed.lua

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plugins/mod_auth_internal_hashed.lua @ 10367:649acbfbf7fe

util.prosodyctl: Enforce strict JID validation on user creation This is where 64ddcbc9a328 should have started. By preventing creation of users with invalid JIDs, it will slowly become safer to enforce strict validation on everything.
author Kim Alvefur <zash@zash.se>
date Fri, 01 Nov 2019 22:53:14 +0100
parent 10219:d58925bb74ca
child 10563:e8db377a2983
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 scram_hashers = require "util.sasl.scram".hashers;
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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
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19 local log = module._log;
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20 local host = module.host;
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21
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22 local accounts = module:open_store("accounts");
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24 local hash_name = module:get_option_string("password_hash", "SHA-1");
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25 local get_auth_db = assert(scram_hashers[hash_name], "SCRAM-"..hash_name.." not supported by SASL library");
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26 local scram_name = "scram_"..hash_name:gsub("%-","_"):lower();
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27
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28 -- Default; can be set per-user
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29 local default_iteration_count = 4096;
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30
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31 -- define auth provider
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32 local provider = {};
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33
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34 function provider.test_password(username, password)
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35 log("debug", "test password for user '%s'", username);
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36 local credentials = accounts:get(username) or {};
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37
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38 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
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39 if credentials.password ~= password then
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40 return nil, "Auth failed. Provided password is incorrect.";
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41 end
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42
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43 if provider.set_password(username, credentials.password) == nil then
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44 return nil, "Auth failed. Could not set hashed password from plaintext.";
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45 else
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46 return true;
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47 end
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48 end
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49
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50 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
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51 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
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52 end
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53
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54 local valid, stored_key, server_key = get_auth_db(password, credentials.salt, credentials.iteration_count);
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56 local stored_key_hex = to_hex(stored_key);
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57 local server_key_hex = to_hex(server_key);
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58
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59 if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key 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 log("debug", "set_password for username '%s'", username);
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68 local account = accounts:get(username);
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69 if account then
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70 account.salt = generate_uuid();
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71 account.iteration_count = max(account.iteration_count or 0, default_iteration_count);
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72 local valid, stored_key, server_key = get_auth_db(password, account.salt, account.iteration_count);
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73 local stored_key_hex = to_hex(stored_key);
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74 local server_key_hex = to_hex(server_key);
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75
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76 account.stored_key = stored_key_hex
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77 account.server_key = server_key_hex
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78
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79 account.password = nil;
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80 return accounts:set(username, account);
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81 end
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82 return nil, "Account not available.";
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83 end
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84
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85 function provider.user_exists(username)
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86 local account = accounts:get(username);
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87 if not account then
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88 log("debug", "account not found for username '%s'", username);
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89 return nil, "Auth failed. Invalid username";
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90 end
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91 return true;
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92 end
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93
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94 function provider.users()
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95 return accounts:users();
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96 end
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97
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98 function provider.create_user(username, password)
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99 if password == nil then
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100 return accounts:set(username, {});
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101 end
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102 local salt = generate_uuid();
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103 local valid, stored_key, server_key = get_auth_db(password, salt, default_iteration_count);
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104 local stored_key_hex = to_hex(stored_key);
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105 local server_key_hex = to_hex(server_key);
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106 return accounts:set(username, {
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107 stored_key = stored_key_hex, server_key = server_key_hex,
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108 salt = salt, iteration_count = default_iteration_count
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109 });
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110 end
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111
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112 function provider.delete_user(username)
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113 return accounts:set(username, nil);
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114 end
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Jeff Mitchell <jeff@jefferai.org>
parents:
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115
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116 function provider.get_sasl_handler()
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117 local testpass_authentication_profile = {
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b08d9295f036 mod_auth_internal_hashed: Rename unused 'self' to _ [luacheck]
Kim Alvefur <zash@zash.se>
parents: 6707
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118 plain_test = function(_, username, password, realm)
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52fe5df91c65 mod_auth_internal_plain, mod_auth_internal_hashed: No need to nodeprep here.
Waqas Hussain <waqas20@gmail.com>
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119 return usermanager.test_password(username, realm, password), true;
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120 end,
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d58925bb74ca mod_auth_internal_hashed: Precompute SCRAM authentication profile name (thanks MattJ)
Kim Alvefur <zash@zash.se>
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121 [scram_name] = function(_, username)
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Kim Alvefur <zash@zash.se>
parents: 5302
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122 local credentials = accounts:get(username);
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123 if not credentials then return; end
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parents: 4764
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124 if credentials.password then
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Kim Alvefur <zash@zash.se>
parents: 8056
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125 if provider.set_password(username, credentials.password) == nil then
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Kim Alvefur <zash@zash.se>
parents: 8056
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126 return nil, "Auth failed. Could not set hashed password from plaintext.";
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Kim Alvefur <zash@zash.se>
parents: 8056
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127 end
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Kim Alvefur <zash@zash.se>
parents: 5302
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128 credentials = accounts:get(username);
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129 if not credentials then return; end
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parents: 4764
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130 end
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5500
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131
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Kim Alvefur <zash@zash.se>
parents: 8055
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132 local stored_key, server_key = credentials.stored_key, credentials.server_key;
cacf14c218ab mod_auth_internal_hashed: Split long lines [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8055
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133 local iteration_count, salt = credentials.iteration_count, credentials.salt;
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parents: 4764
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134 stored_key = stored_key and from_hex(stored_key);
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parents: 4764
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135 server_key = server_key and from_hex(server_key);
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parents: 4764
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136 return stored_key, server_key, iteration_count, salt, true;
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parents: 4764
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137 end
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
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138 };
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parents: 4764
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139 return new_sasl(host, testpass_authentication_profile);
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
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140 end
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5500
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141
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Waqas Hussain <waqas20@gmail.com>
parents: 5116
diff changeset
142 module:provides("auth", provider);
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parents: 4764
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143