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<?php

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/**

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* Class for testing serialized data on SQL saves.

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namespace StringLocator\Extensions\SQL\Tests;

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/**

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* Serialized_Data class.

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class Serialized_Data {

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/**

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* The content that will be scanned.

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* @var string

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private $content = '';

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/**

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* An array holding any errors returned during testing.

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* @var array

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public $errors = array();

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/**

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* SmartScan constructor.

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public function __construct() {

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add_action( 'string_locator_editor_checks', array( $this, 'print_checks_option' ) );

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add_filter( 'string_locator_pre_save', array( $this, 'maybe_perform_test' ), 10, 2 );

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add_filter( 'string_locator_pre_save_fail_notice', array( $this, 'return_failure_notices' ) );

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}

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/**

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* Combine reported errors with any new notices.

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* @param $notices

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* @return mixed

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public function return_failure_notices( $notices ) {

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if ( empty( $this->errors ) ) {

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return $notices;

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}

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return array_merge(

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$notices,

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$this->errors

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);

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}

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/**

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* Conditionally run the test tool.

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* @param bool $can_save A boolean value if the test has passed or failed.

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* @param string $content The content being modified.

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* @return bool|mixed|null

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public function maybe_perform_test( $can_save, $content ) {

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// If another addon has determined the file can not be saved, bail early.

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if ( ! $can_save ) {

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return $can_save;

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}

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// Do not perform a smart scan if the option for it is disabled.

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if ( ! isset( $_POST['string-locator-validate-serialized-data'] ) ) {

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return $can_save;

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}

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return $this->run( $content );

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}

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/**

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* Output a checkbox to enable or disable this feature from within the editor interface.

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* @return void

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public function print_checks_option() {

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if ( ! isset( $_GET['file-type'] ) || 'sql' !== $_GET['file-type'] ) {

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return;

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}

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<label>

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<?php esc_html_e( 'If the SQL data is serialized, validate it before saving.', 'string-locator' ); ?>

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</label>

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</div>

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<?php

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}

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/**

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* A helper function to return any errors.

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* @return array

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public function get_errors() {

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return $this->errors;

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}

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/**

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* Main test runner.

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* @param string $content The content to scan.

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* @return bool

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public function run( $content ) {

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$this->content = $content;

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// Reset the stored errors for a fresh run.

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$this->errors = array();

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if ( \is_serialized( $this->content ) ) {

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$test_data = @unserialize( $this->content );

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if ( 'b:0;' !== $this->content && false === $test_data ) {

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$this->errors[] = array(

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'type' => 'error',

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'message' => __( 'The data is meant to be serialized with PHP, but is no longer valid.', 'string-locator' ),

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);

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}

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}

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if ( ! empty( $this->errors ) ) {

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return false;

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}

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return true;

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}

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}

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new Serialized_Data();

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