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C:\xampp\htdocs\landing\wp-content\plugins\wp-optimize\includes\class-updraft-smush-task.php

<?php
/**
 *  A sample implementation using the Resmush.it API and our tasks library
 */

if (!defined('ABSPATH')) die('Access denied.');

if (!class_exists('Updraft_Task_1_1')) require_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');

if (!class_exists('Smush_Task')) :

abstract class Updraft_Smush_Task extends Updraft_Task_1_1 {

    /**
     * A flag indicating if the operation was succesful
     *
     * @var bool
     */
    protected $success = false;

    /**
     * A text descriptor describing the stage of the task
     *
     * @var string
     */
    protected $stage;

    /**
     * Initialise the task
     *
     * @param Array $options - options to use
     */
    public function initialise($options = array()) {
        parent::initialise($options);
        $this->set_current_stage('initialised');
        do_action('ud_task_initialised', $this);
    }

    /**
     * Runs the task
     *
     * @return bool - true if complete, false otherwise
     */
    public function run() {

        $this->set_status('active');
        
        do_action('ud_task_started', $this);

        $attachment_id    = $this->get_option('attachment_id');

        if (is_multisite()) {
            switch_to_blog($this->get_option('blog_id', 1));
            $file_path = get_attached_file($attachment_id);
            restore_current_blog();
        } else {
            $file_path = get_attached_file($attachment_id);
        }

        if (!$this->validate_file($file_path)) return false;

        $api_endpoint = $this->get_option('api_endpoint');

        if (false === filter_var($api_endpoint, FILTER_VALIDATE_URL)) {
            $this->fail('invalid_api_url', "The API endpoint supplied {$api_endpoint} is invalid");
            return false;
        }

        $original_image = $file_path;
        $backup_original_image = $this->get_option('keep_original', true);

        // add possibility to exclude certain image sizes from smush.
        $dont_smush_sizes = apply_filters('wpo_dont_smush_sizes', array());

        $this->update_option('original_filesize', filesize($file_path));

        // build list of files for smush.
        $files = array_merge(array('full' => $file_path), $this->get_attachment_files($attachment_id));

        foreach ($files as $size => $file_path) {

            if (in_array($size, $dont_smush_sizes)) continue;

            if (filesize($file_path) > 5242880) {
                $this->update_option('request_timeout', 180);
            }

            $this->log($this->get_description());

            /**
             * Filters the options for a single image to compress.
             * Currently supports:
             * - 'quality': Will use the image quality set in this filter, instead of the one defined in the settings.
             *
             * @param array   $options       - The options (default: empty array)
             * @param integer $attachment_id - The attachment post ID
             * @param string  $file_path     - The path to the file being compressed
             * @param string  $size          - The size name (e.g. 'thumbnail')
             */
            $options = apply_filters('wpo_image_compression_single_image_options', array(), $attachment_id, $file_path, $size);

            $post_data = $this->prepare_post_request($file_path, $options);

            $response = $this->post_to_remote_server($api_endpoint, $post_data);
            $optimised_image = $this->process_server_response($response);

            if ($optimised_image) {
                $backup_image = ($original_image == $file_path) ? $backup_original_image : false;
                $this->save_optimised_image($file_path, $optimised_image, $backup_image);
            }

        }

        return $this->success;
    }

    /**
     * Posts the supplied data to the API url and returns a response
     *
     * @param String $api_endpoint - the url to post the form to
     * @param String $post_data       - the post data as specified by the server
     * @return mixed - the response
     */
    public function post_to_remote_server($api_endpoint, $post_data) {

        $this->set_current_stage('connecting');
        $response = wp_remote_post($api_endpoint, $post_data);
        
        if (is_wp_error($response)) {
            $this->fail($response->get_error_code(), $response->get_error_message());
            return false;
        }

        return $response;
    }

    /**
     * Processes the response recieved from the remote server
     *
     * @param mixed $response - the response object
     * @return mixed - the response
     */
    public function process_server_response($response) {
        $this->set_current_stage('processing_response');
        return $response;
    }

    /**
     * Checks if a file is valid and capable of being smushed
     *
     * @param String $file_path - the path of the original image
     * @return bool - true on success, false otherwise
     */
    public function validate_file($file_path) {

        $allowed_file_types = $this->get_option('allowed_file_types');

        if (!file_exists($file_path)) {
            $this->fail("invalid_file_path", "The linked attachment ID does not have a valid file path");
            return false;
        }

        if (filesize($file_path) > $this->get_option('max_filesize')) {
            $this->fail("exceeded_max_filesize", "$file_path - cannot be optimized, file size is above service provider limit");
            return false;
        }

        if (!in_array(pathinfo($file_path, PATHINFO_EXTENSION), $allowed_file_types)) {
            $this->fail("invalid_file_type", "$file_path - cannot be optimized, it has an invalid file type");
            return false;
        }

        return true;
    }

    /**
     * Creates a backup of the original image
     *
     * @param String $file_path - the path of the original image
     * @return bool - true on success, false otherwise
     */
    public function backup_original_image($file_path) {
                
        $this->set_current_stage('backup_original');

        if (is_multisite()) {
            switch_to_blog($this->get_option('blog_id', 1));
        }

        $file = pathinfo($file_path);
        $back_up = wp_normalize_path($file['dirname'].'/'.basename($file['filename'].$this->get_option('backup_prefix').$file['extension']));
        $uploads_dir = wp_upload_dir();

        // Make path relative and safe for migrations
        $back_up_relative_path = preg_replace('#^'.wp_normalize_path($uploads_dir['basedir'].'/').'#', '', $back_up);

        update_post_meta($this->get_option('attachment_id'), 'original-file', $back_up_relative_path);

        if (is_multisite()) {
            restore_current_blog();
        }

        $this->log("Backing up the original image - {$back_up_relative_path}");

        return copy($file_path, $back_up);
    }

    /**
     * Creates a backup of the original image
     *
     * @param String $file_path       - the path of the original image
     * @param Mixes  $optimised_image - the contents of the image
     * @param bool   $backup_original - backup original image
     *
     * @return bool - true on success, false otherwise
     */
    private function save_optimised_image($file_path, $optimised_image, $backup_original) {
        
        $this->set_current_stage('saving_image');

        if ($backup_original)
            $this->backup_original_image($file_path);

        if (false !== file_put_contents($file_path, $optimised_image)) {
            $this->success = true;
        } else {
            $this->success = false;
        }

        return $this->success;
    }

    /**
     * Fires if the task succeds, any clean up code and logging goes here
     */
    public function complete() {

        $attachment_id    = $this->get_option('attachment_id');

        if (is_multisite()) {
            switch_to_blog($this->get_option('blog_id', 1));
            $file_path = get_attached_file($attachment_id);
            restore_current_blog();
        } else {
            $file_path = get_attached_file($attachment_id);
        }

        $original_size = $this->get_option('original_filesize');
        $this->set_current_stage('completed');

        clearstatcache(true, $file_path); // phpcs:ignore PHPCompatibility.FunctionUse.NewFunctionParameters.clearstatcache_clear_realpath_cacheFound,PHPCompatibility.FunctionUse.NewFunctionParameters.clearstatcache_filenameFound
        if (0 == $original_size) {
            $info = sprintf(__("The file was compressed to %s using WP-Optimize", 'wp-optimize'), WP_Optimize()->format_size(filesize($file_path)));
        } else {
            $saved = round((($original_size - filesize($file_path)) / $original_size * 100), 2);
            $info = sprintf(__("The file was compressed from %s to %s saving %s percent using WP-Optimize", 'wp-optimize'), WP_Optimize()->format_size($original_size), WP_Optimize()->format_size(filesize($file_path)), $saved);
        }

        $stats = array(
            'smushed-with'      => $this->label,
            'original-size'     => $original_size,
            'smushed-size'        => filesize($file_path),
            'savings-percent'     => $saved,
        );

        if (is_multisite()) {
            switch_to_blog($this->get_option('blog_id', 1));
            update_post_meta($attachment_id, 'smush-complete', true);
            update_post_meta($attachment_id, 'smush-info', $info);
            update_post_meta($attachment_id, 'smush-stats', $stats);
            restore_current_blog();
        } else {
            update_post_meta($attachment_id, 'smush-complete', true);
            update_post_meta($attachment_id, 'smush-info', $info);
            update_post_meta($attachment_id, 'smush-stats', $stats);
        }

        $this->log("Successfully optimized the image - {$file_path}." . $info);
        $this->set_status('complete');

        return parent::complete();
    }

    /**
     * Fires if the task fails, any clean up code and logging goes here
     *
     * @param String $error_code    - A code for the failure
     * @param String $error_message - A description for the failure
     */
    public function fail($error_code = "Unknown", $error_message = "Unknown") {

        $attachment_id = $this->get_option('attachment_id');

        $info = sprintf(__("Failed with error code %s - %s", 'wp-optimize'), $error_code, $error_message);

        if (is_multisite()) {
            switch_to_blog($this->get_option('blog_id', 1));
            update_post_meta($attachment_id, 'smush-info', $info);
            update_post_meta($attachment_id, 'smush-complete', false);
            restore_current_blog();
        } else {
            update_post_meta($attachment_id, 'smush-info', $info);
            update_post_meta($attachment_id, 'smush-complete', false);
        }


        do_action('ud_smush_task_failed', $this, $error_code, $error_message);

        return parent::fail($error_code, $error_message);
    }
    
    /**
     * Get all the supported task stages.
     *
     * @return array - list of task stages.
     */
    public function get_allowed_stages() {
        
        $stages = array(
            'initialised' => __('Initialised', 'wp-optimize'),
            'connecting'   => __('Connecting to API server', 'wp-optimize'),
            'processing_response' => __('Processing response', 'wp-optimize'),
            'backup_original' => __('Backing up original image', 'wp-optimize'),
            'saving_image' => __('Saving optimized image', 'wp-optimize'),
            'completed' => __('Successful', 'wp-optimize'),
        );

        return apply_filters('allowed_task_stages', $stages);
    }

    /**
     * Get features available with this service
     *
     * @return Array - an array of features
     */
    public static function get_features() {
        return array(
            'max_filesize' => self::MAX_FILESIZE,
            'lossy_compression' => true,
            'preserve_exif' => true,
        );
    }

    /**
     * Retrieve default options for this task.
     * This method should normally be over-ridden by the child.
     *
     * @return Array - an array of options
     */
    public function get_default_options() {

        return array(
            'allowed_file_types' => array('gif', 'png', 'jpg', 'tif', 'jpeg'),
            'request_timeout' => 15,
            'image_quality' => 90,
            'backup_prefix' => '-updraft-pre-smush-original.'
        );
    }

    /**
     * Sets the task stage.
     *
     * @param String $stage - the current stage of the task
     * @return bool - the result of the  update
     */
    public function set_current_stage($stage) {
        
        if (array_key_exists($stage, self::get_allowed_stages())) {
            $this->stage = $stage;
            return $this->update_option('current_stage', $this->stage);
        }
        
        return false;
    }

    /**
     * Gets the task stage
     *
     * @return String $stage - the current stage of the task
     */
    public function get_current_stage() {
        if (isset($this->stage))
            return $this->stage;
        else return $this->get_option('current_stage');
    }

    /**
     * Get image paths to resized attachment images.
     *
     * @param int $attachment_id
     * @return array
     */
    private function get_attachment_files($attachment_id) {
        $attachment_images = array();
        $upload_dir = function_exists('wp_get_upload_dir') ? wp_get_upload_dir() : wp_upload_dir(null, false);

        // get sizes info from attachment meta data.
        $meta = wp_get_attachment_metadata($attachment_id);
        if (!is_array($meta) || !array_key_exists('sizes', $meta)) return $attachment_images;

        $image_sizes = array_keys($meta['sizes']);

        // build list of resized images.
        foreach ($image_sizes as $size) {
            $image = image_get_intermediate_size($attachment_id, $size);

            if (is_array($image)) {
                $file = trailingslashit($upload_dir['basedir']) . $image['path'];
                if (is_file($file) && !in_array($file, $attachment_images)) {
                    $attachment_images[$size] = $file;
                }
            }
        }

        return $attachment_images;
    }

    /**
     * Check the mime type of a downloaded file, returns true if it is a valid image mime type.
     *
     * @param string $file_buffer The buffer string downloaded from the compression service
     * @return boolean
     */
    protected function is_downloaded_image_buffer_mime_type_valid($file_buffer) {
        // If the required class does not exist, return true to avoid breaking the functionality
        if (!class_exists('finfo')) return true;
        $accepted_types = apply_filters('wpo_image_compression_accepted_mime_types', array('image/png', 'image/jpeg', 'image/jpg', 'image/gif', 'image/webp'));
        // The ignore rule below is added because "finfo" doesn't exist in PHP5.2.
        $finfo = new finfo(FILEINFO_MIME_TYPE); // phpcs:ignore PHPCompatibility.Classes.NewClasses.finfoFound, PHPCompatibility.Constants.NewConstants.fileinfo_mime_typeFound
        $mime_type = $finfo->buffer($file_buffer);
        return in_array($mime_type, $accepted_types);
    }
}
endif;
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Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586