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<?php
/*
+-------------------------------------------------------------------------+
| Copyright (C) 2004-2026 The Cacti Group |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License |
| as published by the Free Software Foundation; either version 2 |
| of the License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
+-------------------------------------------------------------------------+
| Cacti: The Complete RRDtool-based Graphing Solution |
+-------------------------------------------------------------------------+
| This code is designed, written, and maintained by the Cacti Group. See |
| about.php and/or the AUTHORS file for specific developer information. |
+-------------------------------------------------------------------------+
| http://www.cacti.net/ |
+-------------------------------------------------------------------------+
*/
require
(
__DIR__
.
'
/include/global.php
'
);
// set default action
set_default_action
();
if
(!
isset
(
$
_SESSION
[
SESS_USER_ID
])) {
header
(
'
Location: logout.php
'
);
exit
;
}
$
user
=
db_fetch_row_prepared
(
'
SELECT id, username, tfa_enabled, tfa_secret, login_opts
FROM user_auth
WHERE id = ?
'
,
[
$
_SESSION
[
SESS_USER_ID
]]);
$
message
=
''
;
$
tfaMins
=
intval
(
read_config_option
(
'
secpass_2fatime
'
));
if
(
$
tfaMins
<=
0
) {
$
tfaMins
=
60
;
}
$
tfaTime
=
time
() - (
$
tfaMins
*
60
);
// See if we have no 2FA time set, and if so, lets try and get it from the cookie
if
(
empty
(
$
_SESSION
[
SESS_USER_2FA
]) &&
isset
(
$
_COOKIE
[
session_name
() .
'
_otp
'
])) {
$
tfaCookie
=
explode
(
'
:
'
,
$
_COOKIE
[
session_name
() .
'
_otp
'
],
2
);
if
(
cacti_count
(
$
tfaCookie
) ==
2
) {
[
$
tfaCookieTime
,
$
tfaCookeHash
] =
$
tfaCookie
;
}
else
{
$
tfaCookieTime
=
false
;
$
tfaCookeHash
=
false
;
}
if
(
$
tfaCookieTime
&&
$
tfaCookeHash
===
hash_hmac
(
'
sha1
'
,
$
user
[
'
username
'
] .
'
:
'
.
$
tfaMins
.
'
:
'
.
$
tfaCookieTime
.
'
:
'
.
$
_SERVER
[
'
HTTP_USER_AGENT
'
],
$
user
[
'
tfa_secret
'
])) {
$
_SESSION
[
SESS_USER_2FA
] =
$
tfaCookieTime
;
}
}
// Is the current session 2FA time expired?
if
(!
empty
(
$
_SESSION
[
SESS_USER_2FA
]) &&
$
_SESSION
[
SESS_USER_2FA
] <
$
tfaTime
) {
// Yes, lets unset the session variable and recheck
unset(
$
_SESSION
[
SESS_USER_2FA
]);
}
// Are we being asked to login with a 2FA token?
if
(
gnrv
(
'
action
'
) ==
'
login_2fa
'
) {
// Auth token from Form
$
token
=
gnrv
(
'
token
'
);
if
(
cacti_sizeof
(
$
user
)) {
if
(
empty
(
$
user
[
'
tfa_enabled
'
])) {
cacti_log
(
"
DEBUG: User '
"
.
$
user
[
'
username
'
] .
"
' attempting to verify 2fa token, but not 2fa enabled
"
,
false
,
'
AUTH
'
,
POLLER_VERBOSITY_DEBUG
);
$
_SESSION
[
SESS_USER_2FA
] =
true
;
}
else
{
cacti_log
(
"
DEBUG: User '
"
.
$
user
[
'
username
'
] .
"
' attempting to verify 2fa token
"
,
false
,
'
AUTH
'
,
POLLER_VERBOSITY_DEBUG
);
$
g
=
new
\
Sonata
\
GoogleAuthenticator
\
GoogleAuthenticator
();
if
(
$
g
->
checkCode
(
$
user
[
'
tfa_secret
'
],
$
token
)) {
$
_SESSION
[
SESS_USER_2FA
] =
time
();
// About using the user agent: It's easy to fake it, but it increases the barrier for stealing and reusing cookies nevertheless
// and it doesn't do any harm (except that it's invalid after a browser upgrade, but that may be even intended)
$
cookie
=
$
_SESSION
[
SESS_USER_2FA
] .
'
:
'
.
hash_hmac
(
'
sha1
'
,
$
user
[
'
username
'
] .
'
:
'
.
$
tfaMins
.
'
:
'
.
$
_SESSION
[
SESS_USER_2FA
] .
'
:
'
.
$
_SERVER
[
'
HTTP_USER_AGENT
'
],
$
user
[
'
tfa_secret
'
]);
$
cookie_lifetime
=
read_config_option
(
'
secpass_2fatime
'
) *
60
;
cacti_cookie_set
(
session_name
() .
'
_otp
'
,
$
cookie
,
time
() + (
$
cookie_lifetime
));
}
else
{
$
_SESSION
[
SESS_USER_2FA
] =
false
;
}
}
}
else
{
$
_SESSION
[
SESS_USER_2FA
] =
time
();
}
// Process the user
if
(
$
_SESSION
[
SESS_USER_2FA
]) {
if
(
isset
(
$
user
[
'
tfa_enabled
'
])) {
cacti_log
(
"
LOGIN: User '
"
.
$
user
[
'
username
'
] .
"
' 2FA Authenticated
"
,
false
,
'
AUTH
'
);
$
client_addr
=
get_client_addr
();
db_execute_prepared
(
'
INSERT IGNORE INTO user_log
(username, user_id, result, ip, time)
VALUES (?, ?, 2, ?, NOW())
'
,
[
$
user
[
'
username
'
],
$
user
[
'
id
'
],
$
client_addr
]);
}
}
else
{
// BAD token
cacti_log
(
"
DEBUG: User '
"
.
$
user
[
'
username
'
] .
"
' failed to verify 2fa token
"
,
false
,
'
AUTH
'
,
POLLER_VERBOSITY_DEBUG
);
// Structured failure line for fail2ban, at normal verbosity (the human line
// above is DEBUG-only). A failed second factor is a brute-force signal too.
auth_log_failure
(
$
user
[
'
username
'
],
auth_realm_token
((
int
) (
$
user
[
'
realm
'
] ??
0
)),
'
2fa
'
);
db_execute_prepared
(
'
INSERT IGNORE INTO user_log
(username, user_id, result, ip, time)
VALUES (?, 0, 3, ?, NOW())
'
,
[
$
user
[
'
username
'
],
get_client_addr
()]);
$
message
=
__
(
'
Failed to verify token
'
);
}
}
if
(
empty
(
$
user
[
'
tfa_enabled
'
])) {
$
_SESSION
[
SESS_USER_2FA
] =
true
;
}
if
(!
empty
(
$
_SESSION
[
SESS_USER_2FA
])) {
auth_login_redirect
(
$
user
[
'
login_opts
'
]);
exit
;
}
if
(
api_plugin_hook_function
(
'
custom_2fa_login
'
,
OPER_MODE_NATIVE
) ==
OPER_MODE_RESKIN
) {
return
;
}
$
selectedTheme
=
get_selected_theme
();
html_auth_header
(
'
login_2fa
'
,
__
(
'
2nd Factor Authentication
'
),
__
(
'
2FA Verification
'
),
__
(
'
Enter your token
'
),
[
'
username
'
=>
$
user
[
'
username
'
],
'
action
'
=>
gnrv
(
'
action
'
)
]
);
?>
<tr>
<td>
<label for='login_token'>
<?php
print
__
(
'
Token
'
);
?>
</label>
</td>
<td>
<input type='textbox' class='ui-state-default ui-corner-all' id='login_token' name='token' placeholder='
<?php
print
__
(
'
Token
'
);
?>
'>
</td>
</tr>
<tr>
<td> </td>
<td>
<span class='textError'>
<?php
print
$
message
;
?>
</span>
</td>
</tr>
<tr>
<td> </td>
<td>
<button type='submit' class='ui-button ui-corner-all ui-widget ui-state-active' value='verify'>
<?php
print
__esc
(
'
Verify
'
);
?>
</button>
</td>
</tr>
<?php
html_auth_footer
(
'
login_2fa
'
,
$
message
,
"
<script>
$(function() {
$('#login_token').focus();
});
</script>
"
);
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