Mercurial > prosody-modules
annotate mod_auth_internal_yubikey/mod_auth_internal_yubikey.lua @ 2598:d9022fe9749c
luacheckrc: List module instance fields
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 06 Mar 2017 00:43:22 +0100 (2017-03-05) |
parents | 7dbde05b48a9 |
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rev | line source |
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341
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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 -- |
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5 -- This project is MIT/X11 licensed. Please see the |
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6 -- COPYING file in the source package for more information. |
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7 -- |
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8 |
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9 local datamanager = require "util.datamanager"; |
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10 local storagemanager = require "core.storagemanager"; |
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11 local log = require "util.logger".init("auth_internal_yubikey"); |
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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 = require "util.jid"; |
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17 local jid_bare = require "util.jid".bare; |
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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 new_sasl = require "util.sasl".new; |
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21 local hosts = hosts; |
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22 |
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23 local prosody = _G.prosody; |
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24 |
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25 local yubikey = require "yubikey".new_authenticator({ |
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26 prefix_length = module:get_option_number("yubikey_prefix_length", 0); |
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27 check_credentials = function (ret, state, data) |
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28 local account = data.account; |
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29 local yubikey_hash = hashes.sha1(ret.public_id..ret.private_id..(ret.password or ""), true); |
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30 if yubikey_hash == account.yubikey_hash then |
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31 return true; |
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32 end |
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33 return false, "invalid-otp"; |
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34 end; |
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35 store_device_info = function (state, data) |
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36 local new_account = {}; |
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37 for k, v in pairs(data.account) do |
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38 new_account[k] = v; |
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39 end |
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40 new_account.yubikey_state = state; |
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41 datamanager.store(data.username, data.host, "accounts", new_account); |
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42 end; |
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43 }); |
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44 |
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45 local global_yubikey_key = module:get_option_string("yubikey_key"); |
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46 |
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47 local host = module.host; |
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48 local provider = {}; |
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49 log("debug", "initializing default authentication provider for host '%s'", host); |
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50 |
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51 function provider.test_password(username, password) |
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52 log("debug", "test password '%s' for user %s at host %s", password, username, module.host); |
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53 |
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54 local account_info = datamanager.load(username, host, "accounts") or {}; |
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55 local yubikey_key = account_info.yubikey_key or global_yubikey_key; |
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56 if account_info.yubikey_key then |
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57 log("debug", "Authenticating Yubikey OTP for %s", username); |
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58 local authed, err = yubikey:authenticate(password, account_info.yubikey_key, account_info.yubikey_state or {}, { account = account_info, username = username, host = host }); |
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59 if not authed then |
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60 log("debug", "Failed to authenticate %s via OTP: %s", username, err); |
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61 return authed, err; |
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62 end |
816
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63 return authed; |
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64 elseif account_info.password and password == account_info.password then |
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65 -- No yubikey configured for this user, treat as normal password |
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66 log("debug", "No yubikey configured for %s, successful login using password auth", username); |
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67 return true; |
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68 else |
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69 return nil, "Auth failed. Invalid username or password."; |
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70 end |
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71 end |
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72 |
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73 function provider.get_password(username) |
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74 log("debug", "get_password for username '%s' at host '%s'", username, module.host); |
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75 return (datamanager.load(username, host, "accounts") or {}).password; |
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76 end |
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77 |
816
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78 function provider.set_password(username, password) |
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79 local account = datamanager.load(username, host, "accounts"); |
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80 if account then |
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81 account.password = password; |
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82 return datamanager.store(username, host, "accounts", account); |
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83 end |
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84 return nil, "Account not available."; |
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85 end |
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86 |
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87 function provider.user_exists(username) |
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88 local account = datamanager.load(username, host, "accounts"); |
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89 if not account then |
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90 log("debug", "account not found for username '%s' at host '%s'", username, module.host); |
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91 return nil, "Auth failed. Invalid username"; |
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92 end |
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93 return true; |
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94 end |
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95 |
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96 function provider.create_user(username, password) |
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97 return datamanager.store(username, host, "accounts", {password = password}); |
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98 end |
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99 |
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Waqas Hussain <waqas20@gmail.com>
parents:
814
diff
changeset
|
100 function provider.delete_user(username) |
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|
101 return datamanager.store(username, host, "accounts", nil); |
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parents:
814
diff
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|
102 end |
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|
103 |
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diff
changeset
|
104 function provider.get_sasl_handler() |
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|
105 local realm = module:get_option("sasl_realm") or module.host; |
960007b0901e
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parents:
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diff
changeset
|
106 local getpass_authentication_profile = { |
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changeset
|
107 plain_test = function(sasl, username, password, realm) |
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|
108 return usermanager.test_password(username, realm, password), true; |
960007b0901e
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|
109 end |
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diff
changeset
|
110 }; |
960007b0901e
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Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
111 return new_sasl(realm, getpass_authentication_profile); |
960007b0901e
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parents:
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112 end |
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113 |
816
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parents:
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changeset
|
114 module:provides("auth", provider); |
341
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115 |
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116 function module.command(arg) |
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117 local command = arg[1]; |
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118 table.remove(arg, 1); |
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119 if command == "associate" then |
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120 local user_jid = arg[1]; |
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121 if not user_jid or user_jid == "help" then |
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122 prosodyctl.show_usage([[mod_auth_internal_yubikey associate JID]], [[Set the Yubikey details for a user]]); |
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123 return 1; |
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124 end |
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125 |
341
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126 local username, host = jid.prepped_split(user_jid); |
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127 if not username or not host then |
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128 print("Invalid JID: "..user_jid); |
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129 return 1; |
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130 end |
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131 |
341
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132 local password, public_id, private_id, key; |
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133 |
341
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134 for i=2,#arg do |
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135 local k, v = arg[i]:match("^%-%-(%w+)=(.*)$"); |
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136 if not k then |
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137 k, v = arg[i]:match("^%-(%w)(.*)$"); |
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138 end |
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139 if k == "password" then |
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140 password = v; |
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141 elseif k == "fixed" then |
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142 public_id = v; |
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143 elseif k == "uid" then |
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144 private_id = v; |
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145 elseif k == "key" or k == "a" then |
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146 key = v; |
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147 end |
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148 end |
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149 |
341
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|
150 if not password then |
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|
151 print(":: Password ::"); |
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|
152 print("This is an optional password that should be always"); |
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153 print("entered during login *before* the yubikey password."); |
f801ce6826d5
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|
154 print("If the yubikey is lost/stolen, unless the attacker"); |
f801ce6826d5
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parents:
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|
155 print("knows this prefix, they cannot access the account."); |
f801ce6826d5
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parents:
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|
156 print(""); |
f801ce6826d5
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parents:
diff
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|
157 password = prosodyctl.read_password(); |
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parents:
diff
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|
158 if not password then |
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|
159 print("Cancelled."); |
f801ce6826d5
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|
160 return 1; |
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diff
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|
161 end |
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parents:
diff
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|
162 end |
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parents:
902
diff
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|
163 |
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diff
changeset
|
164 if not public_id then |
341
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parents:
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|
165 print(":: Public Yubikey ID ::"); |
f801ce6826d5
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parents:
diff
changeset
|
166 print("This is a fixed string of characters between 0 and 16"); |
f801ce6826d5
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parents:
diff
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|
167 print("bytes long that the Yubikey prefixes to every token."); |
f801ce6826d5
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parents:
diff
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|
168 print("The ID should be entered in modhex encoding, meaning "); |
f801ce6826d5
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parents:
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169 print("a string up to 32 characters. This *must* match"); |
f801ce6826d5
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parents:
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|
170 print("exactly the fixed string programmed into the yubikey."); |
f801ce6826d5
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parents:
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|
171 print(""); |
f801ce6826d5
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parents:
diff
changeset
|
172 io.write("Enter fixed id (modhex): "); |
f801ce6826d5
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parents:
diff
changeset
|
173 while true do |
f801ce6826d5
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parents:
diff
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|
174 public_id = io.read("*l"); |
f801ce6826d5
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parents:
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|
175 if #public_id > 32 then |
f801ce6826d5
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parents:
diff
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|
176 print("The fixed id must be 32 characters or less. Please try again."); |
f801ce6826d5
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parents:
diff
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|
177 elseif public_id:match("[^cbdefghijklnrtuv]") then |
f801ce6826d5
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diff
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|
178 print("The fixed id contains invalid characters. It must be entered in modhex encoding. Please try again."); |
f801ce6826d5
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parents:
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|
179 else |
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parents:
diff
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|
180 break; |
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|
181 end |
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|
182 end |
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parents:
diff
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|
183 end |
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diff
changeset
|
184 |
341
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parents:
diff
changeset
|
185 if not private_id then |
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parents:
diff
changeset
|
186 print(":: Private Yubikey ID ::"); |
f801ce6826d5
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parents:
diff
changeset
|
187 print("This is a fixed secret UID programmed into the yubikey"); |
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parents:
diff
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|
188 print("during configuration. It must be entered in hex (not modhex)"); |
f801ce6826d5
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parents:
diff
changeset
|
189 print("encoding. It is always 6 bytes long, which is 12 characters"); |
f801ce6826d5
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parents:
diff
changeset
|
190 print("in hex encoding."); |
f801ce6826d5
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parents:
diff
changeset
|
191 print(""); |
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diff
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|
192 while true do |
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parents:
diff
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|
193 io.write("Enter private UID (hex): "); |
f801ce6826d5
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parents:
diff
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|
194 private_id = io.read("*l"); |
f801ce6826d5
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parents:
diff
changeset
|
195 if #private_id ~= 12 then |
f801ce6826d5
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parents:
diff
changeset
|
196 print("The id length must be 12 characters in hex encoding. Please try again."); |
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|
197 elseif private_id:match("%X") then |
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diff
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|
198 print("The key contains invalid characters - it must be in hex encoding (not modhex). Please try again."); |
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|
199 else |
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|
200 break; |
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parents:
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|
201 end |
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parents:
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|
202 end |
1343
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902
diff
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|
203 end |
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diff
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|
204 |
341
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parents:
diff
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|
205 if not key then |
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parents:
diff
changeset
|
206 print(":: AES Encryption Key ::"); |
f801ce6826d5
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parents:
diff
changeset
|
207 print("This is the secret key that the Yubikey uses to encrypt the"); |
f801ce6826d5
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208 print("generated tokens. It is 32 characters in hex encoding."); |
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209 print(""); |
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210 while true do |
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211 io.write("Enter AES key (hex): "); |
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212 key = io.read("*l"); |
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213 if #key ~= 32 then |
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214 print("The key length must be 32 characters in hex encoding. Please try again."); |
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215 elseif key:match("%X") then |
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216 print("The key contains invalid characters - it must be in hex encoding (not modhex). Please try again."); |
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217 else |
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218 break; |
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219 end |
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220 end |
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221 end |
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222 |
341
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223 local hash = hashes.sha1(public_id..private_id..password, true); |
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224 local account = { |
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225 yubikey_hash = hash; |
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226 yubikey_key = key; |
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227 }; |
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228 storagemanager.initialize_host(host); |
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229 local ok, err = datamanager.store(username, host, "accounts", account); |
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230 if not ok then |
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231 print("Error saving configuration:"); |
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232 print("", err); |
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233 return 1; |
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234 end |
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235 print("Saved."); |
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236 return 0; |
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237 end |
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238 end |