Md5SaltTest.php

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<?php
namespace TYPO3\CMS\Saltedpasswords\Tests\Unit\Salt;

class Md5SaltTest extends \TYPO3\CMS\Core\Tests\UnitTestCase {

    protected $objectInstance = NULL;

    public function setUp() {
        $this->objectInstance = $this->getMock('TYPO3\\CMS\\Saltedpasswords\\Salt\\Md5Salt', array('dummy'));
    }

    protected function getWarningWhenMethodUnavailable() {
        $warningMsg = '';
        if (!CRYPT_MD5) {
            $warningMsg = 'MD5 is not supported on your platform. ' . 'Then, some of the md5 tests will fail.';
        }
        return $warningMsg;
    }

    public function hasCorrectBaseClass() {
        $hasCorrectBaseClass = get_class($this->objectInstance) === 'TYPO3\\CMS\\Saltedpasswords\\Salt\\Md5Salt';
        // XCLASS ?
        if (!$hasCorrectBaseClass && FALSE != get_parent_class($this->objectInstance)) {
            $hasCorrectBaseClass = is_subclass_of($this->objectInstance, 'TYPO3\\CMS\\Saltedpasswords\\Salt\\Md5Salt');
        }
        $this->assertTrue($hasCorrectBaseClass);
    }

    public function nonZeroSaltLength() {
        $this->assertTrue($this->objectInstance->getSaltLength() > 0);
    }

    public function emptyPasswordResultsInNullSaltedPassword() {
        $password = '';
        $this->assertNull($this->objectInstance->getHashedPassword($password));
    }

    public function nonEmptyPasswordResultsInNonNullSaltedPassword() {
        $password = 'a';
        $this->assertNotNull($this->objectInstance->getHashedPassword($password), $this->getWarningWhenMethodUnavailable());
    }

    public function createdSaltedHashOfProperStructure() {
        $password = 'password';
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password);
        $this->assertTrue($this->objectInstance->isValidSaltedPW($saltedHashPassword), $this->getWarningWhenMethodUnavailable());
    }

    public function createdSaltedHashOfProperStructureForCustomSaltWithoutSetting() {
        $password = 'password';
        // custom salt without setting
        $randomBytes = \TYPO3\CMS\Core\Utility\GeneralUtility::generateRandomBytes($this->objectInstance->getSaltLength());
        $salt = $this->objectInstance->base64Encode($randomBytes, $this->objectInstance->getSaltLength());
        $this->assertTrue($this->objectInstance->isValidSalt($salt), $this->getWarningWhenMethodUnavailable());
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password, $salt);
        $this->assertTrue($this->objectInstance->isValidSaltedPW($saltedHashPassword), $this->getWarningWhenMethodUnavailable());
    }

    public function authenticationWithValidAlphaCharClassPassword() {
        $password = 'aEjOtY';
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password);
        $this->assertTrue($this->objectInstance->checkPassword($password, $saltedHashPassword), $this->getWarningWhenMethodUnavailable());
    }

    public function authenticationWithValidNumericCharClassPassword() {
        $password = '01369';
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password);
        $this->assertTrue($this->objectInstance->checkPassword($password, $saltedHashPassword), $this->getWarningWhenMethodUnavailable());
    }

    public function authenticationWithValidAsciiSpecialCharClassPassword() {
        $password = ' !"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~';
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password);
        $this->assertTrue($this->objectInstance->checkPassword($password, $saltedHashPassword), $this->getWarningWhenMethodUnavailable());
    }

    public function authenticationWithValidLatin1SpecialCharClassPassword() {
        $password = '';
        for ($i = 160; $i <= 191; $i++) {
            $password .= chr($i);
        }
        $password .= chr(215) . chr(247);
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password);
        $this->assertTrue($this->objectInstance->checkPassword($password, $saltedHashPassword), $this->getWarningWhenMethodUnavailable());
    }

    public function authenticationWithValidLatin1UmlautCharClassPassword() {
        $password = '';
        for ($i = 192; $i <= 214; $i++) {
            $password .= chr($i);
        }
        for ($i = 216; $i <= 246; $i++) {
            $password .= chr($i);
        }
        for ($i = 248; $i <= 255; $i++) {
            $password .= chr($i);
        }
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password);
        $this->assertTrue($this->objectInstance->checkPassword($password, $saltedHashPassword), $this->getWarningWhenMethodUnavailable());
    }

    public function authenticationWithNonValidPassword() {
        $password = 'password';
        $password1 = $password . 'INVALID';
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password);
        $this->assertFalse($this->objectInstance->checkPassword($password1, $saltedHashPassword), $this->getWarningWhenMethodUnavailable());
    }

    public function passwordVariationsResultInDifferentHashes() {
        $pad = 'a';
        $criticalPwLength = 0;
        // We're using a constant salt.
        $saltedHashPasswordCurrent = $salt = $this->objectInstance->getHashedPassword($pad);
        for ($i = 0; $i <= 128; $i += 8) {
            $password = str_repeat($pad, max($i, 1));
            $saltedHashPasswordPrevious = $saltedHashPasswordCurrent;
            $saltedHashPasswordCurrent = $this->objectInstance->getHashedPassword($password, $salt);
            if ($i > 0 && $saltedHashPasswordPrevious === $saltedHashPasswordCurrent) {
                $criticalPwLength = $i;
                break;
            }
        }
        $this->assertTrue($criticalPwLength == 0 || $criticalPwLength > 32, $this->getWarningWhenMethodUnavailable() . 'Duplicates of hashed passwords with plaintext password of length ' . $criticalPwLength . '+.');
    }

    public function noUpdateNecessityForMd5() {
        $password = 'password';
        $saltedHashPassword = $this->objectInstance->getHashedPassword($password);
        $this->assertFalse($this->objectInstance->isHashUpdateNeeded($saltedHashPassword));
    }

}