prosody
87105a9a11df
plugins/mod_auth_internal_hashed.lua

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plugins/mod_auth_internal_hashed.lua @ 11369:87105a9a11df

util.datamanager: Support iterating over any file extension The 'typ' argument to all other functions is the actual file extension, but not here for some reason. May need this for iterating over the .bin files created by mod_http_file_share in the future.
author Kim Alvefur <zash@zash.se>
date Sun, 07 Feb 2021 19:23:33 +0100
parent 10916:c7ed8f754033
child 11560:3bbb1af92514
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 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
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20 local log = module._log;
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21 local host = module.host;
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22
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23 local accounts = module:open_store("accounts");
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25 local hash_name = module:get_option_string("password_hash", "SHA-1");
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26 local get_auth_db = assert(scram_hashers[hash_name], "SCRAM-"..hash_name.." not supported by SASL library");
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27 local scram_name = "scram_"..hash_name:gsub("%-","_"):lower();
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28
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29 -- Default; can be set per-user
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30 local default_iteration_count = 4096;
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32 -- define auth provider
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33 local provider = {};
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34
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35 function provider.test_password(username, password)
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36 log("debug", "test password for user '%s'", username);
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37 local credentials = accounts:get(username) or {};
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38 password = saslprep(password);
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39 if not password then
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40 return nil, "Password fails SASLprep.";
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41 end
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42
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43 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
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44 if saslprep(credentials.password) ~= password then
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45 return nil, "Auth failed. Provided password is incorrect.";
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46 end
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47
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48 if provider.set_password(username, credentials.password) == nil then
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49 return nil, "Auth failed. Could not set hashed password from plaintext.";
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50 else
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51 return true;
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52 end
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53 end
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54
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55 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
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56 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
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57 end
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58
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59 local valid, stored_key, server_key = get_auth_db(password, credentials.salt, credentials.iteration_count);
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61 local stored_key_hex = to_hex(stored_key);
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62 local server_key_hex = to_hex(server_key);
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63
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64 if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key then
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65 return true;
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66 else
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67 return nil, "Auth failed. Invalid username, password, or password hash information.";
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68 end
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69 end
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71 function provider.set_password(username, password)
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72 log("debug", "set_password for username '%s'", username);
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73 local account = accounts:get(username);
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74 if account then
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75 account.salt = generate_uuid();
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76 account.iteration_count = max(account.iteration_count or 0, default_iteration_count);
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77 local valid, stored_key, server_key = get_auth_db(password, account.salt, account.iteration_count);
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78 if not valid then
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79 return valid, stored_key;
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80 end
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81 local stored_key_hex = to_hex(stored_key);
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82 local server_key_hex = to_hex(server_key);
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83
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84 account.stored_key = stored_key_hex
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85 account.server_key = server_key_hex
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86
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87 account.password = nil;
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88 return accounts:set(username, account);
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89 end
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90 return nil, "Account not available.";
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91 end
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92
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93 function provider.user_exists(username)
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94 local account = accounts:get(username);
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95 if not account then
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96 log("debug", "account not found for username '%s'", username);
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97 return nil, "Auth failed. Invalid username";
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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.users()
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103 return accounts:users();
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104 end
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105
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106 function provider.create_user(username, password)
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107 if password == nil then
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108 return accounts:set(username, {});
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109 end
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110 local salt = generate_uuid();
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111 local valid, stored_key, server_key = get_auth_db(password, salt, default_iteration_count);
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112 if not valid then
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113 return valid, stored_key;
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114 end
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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, {
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118 stored_key = stored_key_hex, server_key = server_key_hex,
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119 salt = salt, iteration_count = default_iteration_count
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parents: 8055
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120 });
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Jeff Mitchell <jeff@jefferai.org>
parents:
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121 end
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Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
122
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parents: 4764
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123 function provider.delete_user(username)
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Kim Alvefur <zash@zash.se>
parents: 5302
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124 return accounts:set(username, nil);
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125 end
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parents:
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126
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parents: 4764
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127 function provider.get_sasl_handler()
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128 local testpass_authentication_profile = {
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Kim Alvefur <zash@zash.se>
parents: 6707
diff changeset
129 plain_test = function(_, username, password, realm)
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Waqas Hussain <waqas20@gmail.com>
parents: 5156
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130 return usermanager.test_password(username, realm, password), true;
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parents: 4764
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131 end,
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d58925bb74ca mod_auth_internal_hashed: Precompute SCRAM authentication profile name (thanks MattJ)
Kim Alvefur <zash@zash.se>
parents: 10218
diff changeset
132 [scram_name] = function(_, username)
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Kim Alvefur <zash@zash.se>
parents: 5302
diff changeset
133 local credentials = accounts:get(username);
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134 if not credentials then return; end
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parents: 4764
diff changeset
135 if credentials.password then
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Kim Alvefur <zash@zash.se>
parents: 8056
diff changeset
136 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
137 return nil, "Auth failed. Could not set hashed password from plaintext.";
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Kim Alvefur <zash@zash.se>
parents: 8056
diff changeset
138 end
5500
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Kim Alvefur <zash@zash.se>
parents: 5302
diff changeset
139 credentials = accounts:get(username);
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parents: 4764
diff changeset
140 if not credentials then return; end
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parents: 4764
diff changeset
141 end
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5500
diff changeset
142
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Kim Alvefur <zash@zash.se>
parents: 8055
diff changeset
143 local stored_key, server_key = credentials.stored_key, credentials.server_key;
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Kim Alvefur <zash@zash.se>
parents: 8055
diff changeset
144 local iteration_count, salt = credentials.iteration_count, credentials.salt;
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parents: 4764
diff changeset
145 stored_key = stored_key and from_hex(stored_key);
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parents: 4764
diff changeset
146 server_key = server_key and from_hex(server_key);
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parents: 4764
diff changeset
147 return stored_key, server_key, iteration_count, salt, true;
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parents: 4764
diff changeset
148 end
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parents: 4764
diff changeset
149 };
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parents: 4764
diff changeset
150 return new_sasl(host, testpass_authentication_profile);
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parents: 4764
diff changeset
151 end
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5500
diff changeset
152
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Waqas Hussain <waqas20@gmail.com>
parents: 5116
diff changeset
153 module:provides("auth", provider);
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parents: 4764
diff changeset
154