1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
<?php /** @file */
require_once('include/security.php');
function nuke_session() {
new_cookie(0);
unset($_SESSION['authenticated']);
unset($_SESSION['account_id']);
unset($_SESSION['uid']);
unset($_SESSION['visitor_id']);
unset($_SESSION['administrator']);
unset($_SESSION['cid']);
unset($_SESSION['theme']);
unset($_SESSION['mobile_theme']);
unset($_SESSION['show_mobile']);
unset($_SESSION['page_flags']);
unset($_SESSION['submanage']);
unset($_SESSION['my_url']);
unset($_SESSION['my_address']);
unset($_SESSION['addr']);
unset($_SESSION['return_url']);
unset($_SESSION['remote_service_class']);
unset($_SESSION['remote_hub']);
}
/**
* Verify login credentials
*
* Returns account record on success, null on failure
*
*/
function account_verify_password($email,$pass) {
$email_verify = get_config('system','verify_email');
$register_policy = get_config('system','register_policy');
// Currently we only verify email address if there is an open registration policy.
// This isn't because of any policy - it's because the workflow gets too complicated if
// you have to verify the email and then go through the account approval workflow before
// letting them login.
if(($email_verify) && ($register_policy == REGISTER_OPEN) && ($record['account_flags'] & ACCOUNT_UNVERIFIED))
return null;
$r = q("select * from account where account_email = '%s'",
dbesc($email)
);
if(! ($r && count($r)))
return null;
foreach($r as $record) {
if(($record['account_flags'] == ACCOUNT_OK)
&& (hash('whirlpool',$record['account_salt'] . $pass) === $record['account_password'])) {
logger('password verified for ' . $email);
return $record;
}
}
$error = 'password failed for ' . $email;
logger($error);
// Also log failed logins to a separate auth log to reduce overhead for server side intrusion prevention
$authlog = get_config('system', 'authlog');
if ($authlog)
@file_put_contents($authlog, datetime_convert() . ':' . session_id() . ' ' . $error . "\n", FILE_APPEND);
return null;
}
/**
* Inline - not a function
* look for auth parameters or re-validate an existing session
* also handles logout
*/
if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
// process a logout request
if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
// process logout request
$args = array('channel_id' => local_user());
call_hooks('logging_out', $args);
nuke_session();
info( t('Logged out.') . EOL);
goaway(z_root());
}
// re-validate a visitor, optionally invoke "su" if permitted to do so
if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
// if our authenticated guest is allowed to take control of the admin channel, make it so.
$admins = get_config('system','remote_admin');
if($admins && is_array($admins) && in_array($_SESSION['visitor_id'],$admins)) {
$x = q("select * from account where account_email = '%s' and account_email != '' and ( account_flags & %d ) limit 1",
dbesc(get_config('system','admin_email')),
intval(ACCOUNT_ROLE_ADMIN)
);
if($x) {
new_cookie(60*60*24); // one day
$_SESSION['last_login_date'] = datetime_convert();
unset($_SESSION['visitor_id']); // no longer a visitor
authenticate_success($x[0], true, true);
}
}
$r = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where xchan_hash = '%s' limit 1",
dbesc($_SESSION['visitor_id'])
);
if($r) {
get_app()->set_observer($r[0]);
}
else {
unset($_SESSION['visitor_id']);
unset($_SESSION['authenticated']);
}
$a->set_groups(init_groups_visitor($_SESSION['visitor_id']));
}
// already logged in user returning
if(x($_SESSION,'uid') || x($_SESSION,'account_id')) {
// first check if we're enforcing that sessions can't change IP address
if($_SESSION['addr'] != $_SERVER['REMOTE_ADDR']) {
logger('SECURITY: Session IP address changed: ' . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
if(get_config('system','paranoia')) {
logger('Session address changed. Paranoid setting in effect, blocking session. '
. $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
nuke_session();
goaway(z_root());
}
}
$r = q("select * from account where account_id = %d limit 1",
intval($_SESSION['account_id'])
);
if(($r) && (($r[0]['account_flags'] == ACCOUNT_OK) || ($r[0]['account_flags'] == ACCOUNT_UNVERIFIED))) {
get_app()->account = $r[0];
$login_refresh = false;
if(! x($_SESSION,'last_login_date')) {
$_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
}
if(strcmp(datetime_convert('UTC','UTC','now - 12 hours'), $_SESSION['last_login_date']) > 0 ) {
$_SESSION['last_login_date'] = datetime_convert();
$login_refresh = true;
}
authenticate_success($r[0], false, false, false, $login_refresh);
}
else {
$_SESSION['account_id'] = 0;
nuke_session();
goaway(z_root());
}
}
}
else {
if(isset($_SESSION)) {
nuke_session();
}
// handle a fresh login request
if((x($_POST,'password')) && strlen($_POST['password']))
$encrypted = hash('whirlpool',trim($_POST['password']));
if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
$record = null;
$addon_auth = array(
'username' => trim($_POST['username']),
'password' => trim($_POST['password']),
'authenticated' => 0,
'user_record' => null
);
/**
*
* A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
* Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
* and later plugins should not interfere with an earlier one that succeeded.
*
*/
call_hooks('authenticate', $addon_auth);
if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
$record = $addon_auth['user_record'];
}
else {
$record = get_app()->account = account_verify_password($_POST['username'],$_POST['password']);
if(get_app()->account) {
$_SESSION['account_id'] = get_app()->account['account_id'];
}
else {
notice( t('Failed authentication') . EOL);
}
logger('authenticate: ' . print_r(get_app()->account,true), LOGGER_DEBUG);
}
if((! $record) || (! count($record))) {
$error = 'authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR'];
logger($error);
// Also log failed logins to a separate auth log to reduce overhead for server side intrusion prevention
$authlog = get_config('system', 'authlog');
if ($authlog)
@file_put_contents($authlog, datetime_convert() . ':' . session_id() . ' ' . $error . "\n", FILE_APPEND);
notice( t('Login failed.') . EOL );
goaway(z_root());
}
// If the user specified to remember the authentication, then change the cookie
// to expire after one year (the default is when the browser is closed).
// If the user did not specify to remember, change the cookie to expire when the
// browser is closed. The reason this is necessary is because if the user
// specifies to remember, then logs out and logs back in without specifying to
// remember, the old "remember" cookie may remain and prevent the session from
// expiring when the browser is closed.
//
// It seems like I should be able to test for the old cookie, but for some reason when
// I read the lifetime value from session_get_cookie_params(), I always get '0'
// (i.e. expire when the browser is closed), even when there's a time expiration
// on the cookie
if($_POST['remember']) {
new_cookie(31449600); // one year
}
else {
new_cookie(0); // 0 means delete on browser exit
}
// if we haven't failed up this point, log them in.
$_SESSION['last_login_date'] = datetime_convert();
authenticate_success($record, true, true);
}
}
function match_openid($authid) {
$r = q("select * from pconfig where cat = 'system' and k = 'openid' and v = '%s' limit 1",
dbesc($authid)
);
if($r)
return $r[0]['uid'];
return false;
}
|
