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Failed login hook implemented

develop
Steve Allison 2013-02-21 02:49:05 +00:00
parent f5d9d02cbc
commit 83a990e4e3
1 changed files with 62 additions and 5 deletions
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67
defense.php
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@ -132,14 +132,71 @@ class defense extends rcube_plugin {
* Hooked function: login_failed($host, $user, $code) * Hooked function: login_failed($host, $user, $code)
* Log event to database * Log event to database
* *
* @param string host * @param array args [ code, host, user, abort ]
* @param string user
* @param int code * @param int code
* *
*/ */
public function hookLoginFailed($host, $user, $code) { public function hookLoginFailed($args) {
$query = "INSERT INTO " . $this->db_table . " (timestamp, type, src, data) VALUES (" . time() . ", 'fail', " . ip2long($this->ipaddr) . ", 'data')";
print $query; // Log failed login attempt
$data = array('user' => $args['user']);
$query = "INSERT INTO " . $this->db_table . " (epoch, type, ipaddr, data) VALUES (?, ?, ?, ?)";
$result = $this->rc->db->query($query, time(), 0, $this->ipaddr, serialize($data));
if (!$result) { write_log('error', 'defense: Error writing to database.'); return; }
// Get number of failed attempts in <fail_reset> seconds
$rTime = (time() - $this->fail_reset); // How far to look back for failed logins
$query = "SELECT count(*) AS n FROM " . $this->db_table . " WHERE ipaddr = ? AND epoch >= ?";
$result = $this->rc->db->query($query, $this->ipaddr, $rTime);
if (!$result) { write_log('error', 'defense: Error writing to database.'); return; }
$row = $result->fetch();
if (!$row) { return; } // No rows? Strange, abort.
// Check if we have too many failures
if ($row['n'] >= $this->fail_max) {
// This IP is now banned
$repeat = 0;
// Check if its been banned before
$query = "SELECT epoch, data FROM " . $this->db_table . " WHERE ipaddr = ? AND type = 1 ORDER BY id DESC LIMIT 1";
$result = $this->rc->db->query($query, $this->ipaddr);
if (!$result) { write_log('error', 'defense: Error writing to database.'); return; }
if ($result->rowCount() > 0) {
// IP has been banned before, check if its a recent repeat offender
$row = $result->fetch();
$data = unserialize($row['data']);
// Classed as a repeate offender if IP is banned again after the previous ban duration
// multiplied by <repeat_multiplier>
if (time() <= (($data['duration'] * $this->repeat_multiplier) + $row['epoch'])) {
// Repeat offender, increase repeat
echo "increase repeat\n";
$repeat = $data['repeat'] +1;
}
}
$data = array(
'duration' => ($this->ban_period * ($repeat > 0 ? pow($this->repeat_multiplier,$repeat) : 1)), // Ban duration based on history
'repeat' => $repeat
);
$query = "INSERT INTO " . $this->db_table . " (epoch, type, ipaddr, data) VALUES (?, ?, ?, ?)";
$result = $this->rc->db->query($query, time(), 1, $this->ipaddr, serialize($data));
if (!$result) { write_log('error', 'defense: Error writing to database.'); return; }
return;
}
}
/**
* Return true if logs indicate given IP is banned
*
* @param string ip
* @return bool
*
*/
public function isBanned($ip) {
$query = "SELECT count(id) FROM " . $this->db_table . " WHERE ip = ? AND ";
} }
} }