93 lines
2.7 KiB
PHP
93 lines
2.7 KiB
PHP
<?php
|
|
|
|
/**
|
|
* This class represents a validator for member passwords.
|
|
*
|
|
* <code>
|
|
* $pwdVal = new PasswordValidator();
|
|
* $pwdValidator->minLength(7);
|
|
* $pwdValidator->checkHistoricalPasswords(6);
|
|
* $pwdValidator->characterStrength('lowercase','uppercase','digits','punctuation');
|
|
*
|
|
* Member::set_password_validator($pwdValidator);
|
|
* </code>
|
|
*
|
|
* @package sapphire
|
|
* @subpackage security
|
|
*/
|
|
class PasswordValidator extends Object {
|
|
static $character_strength_tests = array(
|
|
'lowercase' => '/[a-z]/',
|
|
'uppercase' => '/[A-Z]/',
|
|
'digits' => '/[0-9]/',
|
|
'punctuation' => '/[^A-Za-z0-9]/',
|
|
);
|
|
|
|
protected $minLength, $minScore, $testNames, $historicalPasswordCount;
|
|
|
|
/**
|
|
* Minimum password length
|
|
*/
|
|
function minLength($minLength) {
|
|
$this->minLength = $minLength;
|
|
}
|
|
|
|
/**
|
|
* Check the character strength of the password.
|
|
*
|
|
* Eg: $this->characterStrength(3, array("lowercase", "uppercase", "digits", "punctuation"))
|
|
*
|
|
* @param $minScore The minimum number of character tests that must pass
|
|
* @param $testNames The names of the tests to perform
|
|
*/
|
|
function characterStrength($minScore, $testNames) {
|
|
$this->minScore = $minScore;
|
|
$this->testNames = $testNames;
|
|
}
|
|
|
|
/**
|
|
* Check a number of previous passwords that the user has used, and don't let them change to that.
|
|
*/
|
|
function checkHistoricalPasswords($count) {
|
|
$this->historicalPasswordCount = $count;
|
|
}
|
|
|
|
/**
|
|
* @param String $password
|
|
* @param Member $member
|
|
* @return ValidationResult
|
|
*/
|
|
function validate($password, $member) {
|
|
$valid = new ValidationResult();
|
|
|
|
if($this->minLength) {
|
|
if(strlen($password) < $this->minLength) $valid->error(sprintf("Password is too short, it must be %s or more characters long.", $this->minLength), "TOO_SHORT");
|
|
}
|
|
|
|
if($this->minScore) {
|
|
$score = 0;
|
|
$missedTests = array();
|
|
foreach($this->testNames as $name) {
|
|
if(preg_match(self::$character_strength_tests[$name], $password)) $score++;
|
|
else $missedTests[] = $name;
|
|
}
|
|
|
|
if($score < $this->minScore) {
|
|
$valid->error("You need to increase the strength of your passwords by adding some of the following characters: " . implode(", ", $missedTests), "LOW_CHARACTER_STRENGTH");
|
|
}
|
|
}
|
|
|
|
if($this->historicalPasswordCount) {
|
|
$previousPasswords = DataObject::get("MemberPassword", "\"MemberID\" = $member->ID", "\"Created\" DESC, \"ID\" Desc", "", $this->historicalPasswordCount);
|
|
if($previousPasswords) foreach($previousPasswords as $previousPasswords) {
|
|
if($previousPasswords->checkPassword($password)) {
|
|
$valid->error("You've already used that password in the past, please choose a new password", "PREVIOUS_PASSWORD");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return $valid;
|
|
}
|
|
|
|
} |