prosody
c1b687a5818d
plugins/mod_auth_internal_hashed.lua

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plugins/mod_auth_internal_hashed.lua @ 3268:c1b687a5818d

mod_auth_internal_hashed: Don't assume user doesn't exist if no recognizable authentication data is found.
author Waqas Hussain <waqas20@gmail.com>
date Tue, 15 Jun 2010 09:11:10 +0500
parent 3267:8f5d76cc4162
child 3269:342fd8f8ccd9
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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 getAuthenticationDatabaseSHA1 = require "util.sasl.scram".getAuthenticationDatabaseSHA1;
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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 -- TODO: remove these two lines in near future
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26 local hmac_sha1 = require "util.hmac".sha1;
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27 local sha1 = require "util.hashes".sha1;
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28
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29 local prosody = _G.prosody;
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30
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31 -- Default; can be set per-user
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32 local iteration_count = 4096;
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33
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34 function new_hashpass_provider(host)
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35 local provider = { name = "internal_hashed" };
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36 log("debug", "initializing hashpass authentication provider for host '%s'", host);
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37
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38 function provider.test_password(username, password)
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39 local credentials = datamanager.load(username, host, "accounts") or {};
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40
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41 if credentials.password ~= nil and string.len(credentials.password) ~= 0 then
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42 if credentials.password ~= password then
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43 return nil, "Auth failed. Provided password is incorrect.";
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44 end
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45
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46 if provider.set_password(username, credentials.password) == nil then
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47 return nil, "Auth failed. Could not set hashed password from plaintext.";
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48 else
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49 return true;
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50 end
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51 end
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52
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53 if credentials.iteration_count == nil or credentials.salt == nil or string.len(credentials.salt) == 0 then
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54 return nil, "Auth failed. Stored salt and iteration count information is not complete.";
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55 end
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56
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57 -- convert hexpass to stored_key and server_key
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58 -- TODO: remove this in near future
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59 if credentials.hashpass then
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60 local salted_password = credentials.hashpass:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
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61 credentials.stored_key = sha1(hmac_sha1(salted_password, "Client Key")):gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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62 credentials.server_key = hmac_sha1(salted_password, "Server Key"):gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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63 credentials.hashpass = nil
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64 datamanager.store(username, host, "accounts", credentials);
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65 end
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66
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67 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, credentials.salt, credentials.iteration_count);
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68
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69 local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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70 local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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71
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72 if valid and stored_key_hex == credentials.stored_key and server_key_hex == credentials.server_key then
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73 return true;
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74 else
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75 return nil, "Auth failed. Invalid username, password, or password hash information.";
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76 end
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77 end
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78
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79 function provider.set_password(username, password)
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80 local account = datamanager.load(username, host, "accounts");
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81 if account then
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82 account.salt = account.salt or generate_uuid();
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83 account.iteration_count = account.iteration_count or iteration_count;
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84 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, account.salt, account.iteration_count);
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85 local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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86 local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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87
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88 account.stored_key = stored_key_hex
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89 account.server_key = server_key_hex
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90
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91 account.password = nil;
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92 return datamanager.store(username, host, "accounts", account);
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93 end
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94 return nil, "Account not available.";
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95 end
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96
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97 function provider.user_exists(username)
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98 local account = datamanager.load(username, host, "accounts");
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99 if not account then
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100 log("debug", "account not found for username '%s' at host '%s'", username, module.host);
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101 return nil, "Auth failed. Invalid username";
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102 end
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103 --[[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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104 log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host);
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105 return nil, "Auth failed. Password invalid.";
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106 end]]
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107 return true;
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108 end
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109
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110 function provider.create_user(username, password)
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111 local salt = generate_uuid();
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112 local valid, stored_key, server_key = getAuthenticationDatabaseSHA1(password, salt, iteration_count);
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113 local stored_key_hex = stored_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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114 local server_key_hex = server_key:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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115 return datamanager.store(username, host, "accounts", {stored_key = stored_key_hex, server_key = server_key_hex, salt = salt, iteration_count = iteration_count});
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116 end
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117
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118 function provider.get_sasl_handler()
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119 local realm = module:get_option("sasl_realm") or module.host;
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120 local testpass_authentication_profile = {
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121 plain_test = function(username, password, realm)
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parents: 3180
diff changeset
122 local prepped_username = nodeprep(username);
b5f261123013 mod_auth_internal, mod_auth_internal_hashed: Updated to provide get_sasl_handler.
Waqas Hussain <waqas20@gmail.com>
parents: 3180
diff changeset
123 if not prepped_username then
b5f261123013 mod_auth_internal, mod_auth_internal_hashed: Updated to provide get_sasl_handler.
Waqas Hussain <waqas20@gmail.com>
parents: 3180
diff changeset
124 log("debug", "NODEprep failed on username: %s", username);
b5f261123013 mod_auth_internal, mod_auth_internal_hashed: Updated to provide get_sasl_handler.
Waqas Hussain <waqas20@gmail.com>
parents: 3180
diff changeset
125 return "", nil;
b5f261123013 mod_auth_internal, mod_auth_internal_hashed: Updated to provide get_sasl_handler.
Waqas Hussain <waqas20@gmail.com>
parents: 3180
diff changeset
126 end
b5f261123013 mod_auth_internal, mod_auth_internal_hashed: Updated to provide get_sasl_handler.
Waqas Hussain <waqas20@gmail.com>
parents: 3180
diff changeset
127 return usermanager.test_password(prepped_username, password, realm), true;
3189
d686abb6b069 mod_auth_internal_hashed: Added SCRAM-SHA-1 support for SASL.
Waqas Hussain <waqas20@gmail.com>
parents: 3187
diff changeset
128 end,
d686abb6b069 mod_auth_internal_hashed: Added SCRAM-SHA-1 support for SASL.
Waqas Hussain <waqas20@gmail.com>
parents: 3187
diff changeset
129 scram_sha_1 = function(username, realm)
d686abb6b069 mod_auth_internal_hashed: Added SCRAM-SHA-1 support for SASL.
Waqas Hussain <waqas20@gmail.com>
parents: 3187
diff changeset
130 local credentials = datamanager.load(username, host, "accounts") or {};
d686abb6b069 mod_auth_internal_hashed: Added SCRAM-SHA-1 support for SASL.
Waqas Hussain <waqas20@gmail.com>
parents: 3187
diff changeset
131 if credentials.password then
3204
7a15cbf23c5b Fix missing parameter in mod_auth_internal_hashed.
Kim Alvefur <zash@zash.se>
parents: 3189
diff changeset
132 usermanager.set_password(username, credentials.password, host);
3189
d686abb6b069 mod_auth_internal_hashed: Added SCRAM-SHA-1 support for SASL.
Waqas Hussain <waqas20@gmail.com>
parents: 3187
diff changeset
133 credentials = datamanager.load(username, host, "accounts") or {};
d686abb6b069 mod_auth_internal_hashed: Added SCRAM-SHA-1 support for SASL.
Waqas Hussain <waqas20@gmail.com>
parents: 3187
diff changeset
134 end
3211
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
135
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
136 -- convert hexpass to stored_key and server_key
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
137 -- TODO: remove this in near future
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
138 if credentials.hashpass then
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
139 local salted_password = credentials.hashpass:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
140 credentials.stored_key = sha1(hmac_sha1(salted_password, "Client Key")):gsub(".", function (c) return ("%02x"):format(c:byte()); end);
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
141 credentials.server_key = hmac_sha1(salted_password, "Server Key"):gsub(".", function (c) return ("%02x"):format(c:byte()); end);
3213
c85bba8bd41a mod_auth_internal_hashed: Empty hashpass after conversion to stored_key/server_key and store new authentication database.
Tobias Markmann <tm@ayena.de>
parents: 3212
diff changeset
142 credentials.hashpass = nil
c85bba8bd41a mod_auth_internal_hashed: Empty hashpass after conversion to stored_key/server_key and store new authentication database.
Tobias Markmann <tm@ayena.de>
parents: 3212
diff changeset
143 datamanager.store(username, host, "accounts", credentials);
3211
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
144 end
d69e90ffbc09 mod_auth_internal_hashed: Convert hashpass to server_key/stored_key on SCRAM-SHA-1 login.
Tobias Markmann <tm@ayena.de>
parents: 3210
diff changeset
145
3205
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3189
diff changeset
146 local stored_key, server_key, iteration_count, salt = credentials.stored_key, credentials.server_key, credentials.iteration_count, credentials.salt;
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3189
diff changeset
147 stored_key = stored_key and stored_key:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3189
diff changeset
148 server_key = server_key and server_key:gsub("..", function(x) return string.char(tonumber(x, 16)); end);
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3189
diff changeset
149 return stored_key, server_key, iteration_count, salt, true;
3186
b5f261123013 mod_auth_internal, mod_auth_internal_hashed: Updated to provide get_sasl_handler.
Waqas Hussain <waqas20@gmail.com>
parents: 3180
diff changeset
150 end
b5f261123013 mod_auth_internal, mod_auth_internal_hashed: Updated to provide get_sasl_handler.
Waqas Hussain <waqas20@gmail.com>
parents: 3180
diff changeset
151 };
b5f261123013 mod_auth_internal, mod_auth_internal_hashed: Updated to provide get_sasl_handler.
Waqas Hussain <waqas20@gmail.com>
parents: 3180
diff changeset
152 return new_sasl(realm, testpass_authentication_profile);
3164
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
153 end
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
154
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
155 function provider.is_admin(jid)
3219
fd06023cbdcc mod_auth_internal{,_hashed}: Update is_admin to only report the admin status of the current host (ignores global admin rights), fixes global access traceback
Matthew Wild <mwild1@gmail.com>
parents: 3216
diff changeset
156 local admins = module:get_option_array("admins");
3164
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
157 if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
158 jid = jid_bare(jid);
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
159 for _,admin in ipairs(admins) do
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
160 if admin == jid then return true; end
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
161 end
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
162 end
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
163 end
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
164 return provider;
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
165 end
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
166
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
167 module:add_item("auth-provider", new_hashpass_provider(module.host));
db9def53fe9c Check in mod_hashpassauth -- works!
Jeff Mitchell <jeff@jefferai.org>
parents:
diff changeset
168