prosody
26a8cc9d9eb7
plugins/mod_auth_internal_hashed.lua

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plugins/mod_auth_internal_hashed.lua @ 11710:26a8cc9d9eb7

net.resolvers.service: Only do DANE with secure SRV records If this seems backwards, that' because it is but the API isn't really designed to easily pass along details from each resolution step onto the next.
author Kim Alvefur <zash@zash.se>
date Sun, 18 Jul 2021 23:25:45 +0200
parent 11560:3bbb1af92514
child 12127:baa7cdde69a6
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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 local saslprep = require "util.encodings".stringprep.saslprep;
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19 local secure_equals = require "util.hashes".equals;
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20
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21 local log = module._log;
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22 local host = module.host;
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23
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24 local accounts = module:open_store("accounts");
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26 local hash_name = module:get_option_string("password_hash", "SHA-1");
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27 local get_auth_db = assert(scram_hashers[hash_name], "SCRAM-"..hash_name.." not supported by SASL library");
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28 local scram_name = "scram_"..hash_name:gsub("%-","_"):lower();
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29
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30 -- Default; can be set per-user
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31 local default_iteration_count = 4096;
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33 -- define auth provider
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34 local provider = {};
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35
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36 function provider.test_password(username, password)
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37 log("debug", "test password for user '%s'", username);
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38 local credentials = accounts:get(username) or {};
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39 password = saslprep(password);
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40 if not password then
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41 return nil, "Password fails SASLprep.";
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42 end
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43
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44 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
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45 if not secure_equals(saslprep(credentials.password), password) then
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46 return nil, "Auth failed. Provided password is incorrect.";
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47 end
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48
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49 if provider.set_password(username, credentials.password) == nil then
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50 return nil, "Auth failed. Could not set hashed password from plaintext.";
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51 else
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52 return true;
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53 end
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54 end
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55
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56 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
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57 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
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58 end
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59
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60 local valid, stored_key, server_key = get_auth_db(password, credentials.salt, credentials.iteration_count);
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61
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62 local stored_key_hex = to_hex(stored_key);
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63 local server_key_hex = to_hex(server_key);
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64
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65 if valid and secure_equals(stored_key_hex, credentials.stored_key) and secure_equals(server_key_hex, credentials.server_key) then
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66 return true;
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67 else
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68 return nil, "Auth failed. Invalid username, password, or password hash information.";
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69 end
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70 end
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71
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72 function provider.set_password(username, password)
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73 log("debug", "set_password for username '%s'", username);
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74 local account = accounts:get(username);
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75 if account then
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76 account.salt = generate_uuid();
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77 account.iteration_count = max(account.iteration_count or 0, default_iteration_count);
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78 local valid, stored_key, server_key = get_auth_db(password, account.salt, account.iteration_count);
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79 if not valid then
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80 return valid, stored_key;
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81 end
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82 local stored_key_hex = to_hex(stored_key);
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83 local server_key_hex = to_hex(server_key);
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84
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85 account.stored_key = stored_key_hex
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86 account.server_key = server_key_hex
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87
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88 account.password = nil;
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89 return accounts:set(username, account);
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90 end
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91 return nil, "Account not available.";
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92 end
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93
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94 function provider.user_exists(username)
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95 local account = accounts:get(username);
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96 if not account then
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97 log("debug", "account not found for username '%s'", username);
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98 return nil, "Auth failed. Invalid username";
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99 end
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100 return true;
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101 end
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102
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103 function provider.users()
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104 return accounts:users();
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105 end
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106
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107 function provider.create_user(username, password)
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108 if password == nil then
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109 return accounts:set(username, {});
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110 end
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111 local salt = generate_uuid();
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112 local valid, stored_key, server_key = get_auth_db(password, salt, default_iteration_count);
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113 if not valid then
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114 return valid, stored_key;
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parents: 8192
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115 end
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116 local stored_key_hex = to_hex(stored_key);
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parents: 4764
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117 local server_key_hex = to_hex(server_key);
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118 return accounts:set(username, {
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parents: 8055
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119 stored_key = stored_key_hex, server_key = server_key_hex,
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parents: 8055
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120 salt = salt, iteration_count = default_iteration_count
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parents: 8055
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121 });
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Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
122 end
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
123
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
124 function provider.delete_user(username)
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Kim Alvefur <zash@zash.se>
parents: 5302
diff changeset
125 return accounts:set(username, nil);
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parents: 4764
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126 end
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parents:
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127
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
128 function provider.get_sasl_handler()
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
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129 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
diff changeset
130 plain_test = function(_, username, password, realm)
5302
52fe5df91c65 mod_auth_internal_plain, mod_auth_internal_hashed: No need to nodeprep here.
Waqas Hussain <waqas20@gmail.com>
parents: 5156
diff changeset
131 return usermanager.test_password(username, realm, password), true;
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parents: 4764
diff changeset
132 end,
10219
d58925bb74ca mod_auth_internal_hashed: Precompute SCRAM authentication profile name (thanks MattJ)
Kim Alvefur <zash@zash.se>
parents: 10218
diff changeset
133 [scram_name] = function(_, username)
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Kim Alvefur <zash@zash.se>
parents: 5302
diff changeset
134 local credentials = accounts:get(username);
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parents: 4764
diff changeset
135 if not credentials then return; end
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
136 if credentials.password then
8192
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Kim Alvefur <zash@zash.se>
parents: 8056
diff changeset
137 if provider.set_password(username, credentials.password) == nil then
4354f556c5db core.usermanager, various modules: Disconnect other resources on password change (thanks waqas) (fixes #512)
Kim Alvefur <zash@zash.se>
parents: 8056
diff changeset
138 return nil, "Auth failed. Could not set hashed password from plaintext.";
4354f556c5db core.usermanager, various modules: Disconnect other resources on password change (thanks waqas) (fixes #512)
Kim Alvefur <zash@zash.se>
parents: 8056
diff changeset
139 end
5500
eeea0eb2602a mod_auth_internal_hashed, mod_auth_internal_plain, mod_privacy, mod_private, mod_register, mod_vcard, mod_muc: Use module:open_store()
Kim Alvefur <zash@zash.se>
parents: 5302
diff changeset
140 credentials = accounts:get(username);
5116
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
141 if not credentials then return; end
5f9066db1b4d mod_auth_internal_hashed: Get rid of useless wrapper function new_hashpass_provider.
Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
142 end
5776
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5500
diff changeset
143
8056
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Kim Alvefur <zash@zash.se>
parents: 8055
diff changeset
144 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
diff changeset
145 local iteration_count, salt = credentials.iteration_count, credentials.salt;
5116
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parents: 4764
diff changeset
146 stored_key = stored_key and from_hex(stored_key);
5f9066db1b4d mod_auth_internal_hashed: Get rid of useless wrapper function new_hashpass_provider.
Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
147 server_key = server_key and from_hex(server_key);
5f9066db1b4d mod_auth_internal_hashed: Get rid of useless wrapper function new_hashpass_provider.
Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
148 return stored_key, server_key, iteration_count, salt, true;
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parents: 4764
diff changeset
149 end
5f9066db1b4d mod_auth_internal_hashed: Get rid of useless wrapper function new_hashpass_provider.
Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
150 };
5f9066db1b4d mod_auth_internal_hashed: Get rid of useless wrapper function new_hashpass_provider.
Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
151 return new_sasl(host, testpass_authentication_profile);
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
152 end
5776
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5500
diff changeset
153
5117
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Waqas Hussain <waqas20@gmail.com>
parents: 5116
diff changeset
154 module:provides("auth", provider);
5116
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Waqas Hussain <waqas20@gmail.com>
parents: 4764
diff changeset
155