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<?php

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namespace Smush\Core;

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class Upload_Dir {

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private $wp_upload_dir;

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private $root_path;

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private $upload_path;

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private $upload_rel_path;

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private $upload_url;

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/**

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* @return array

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private function get_wp_upload_dir() {

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if ( is_null( $this->wp_upload_dir ) ) {

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$this->wp_upload_dir = $this->prepare_wp_upload_dir();

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}

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return $this->wp_upload_dir;

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}

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/**

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* @return mixed

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private function get_root_path() {

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if ( is_null( $this->root_path ) ) {

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$this->root_path = $this->prepare_root_path();

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}

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return $this->root_path;

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}

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/**

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* @return mixed

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public function get_upload_path() {

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if ( is_null( $this->upload_path ) ) {

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$this->upload_path = $this->prepare_upload_path();

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}

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return $this->upload_path;

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}

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/**

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* @return string

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public function get_upload_rel_path() {

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if ( is_null( $this->upload_rel_path ) ) {

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$this->upload_rel_path = $this->prepare_upload_rel_path();

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}

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return $this->upload_rel_path;

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}

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/**

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* @return string

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public function get_upload_url() {

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if ( is_null( $this->upload_url ) ) {

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$this->upload_url = $this->prepare_upload_url();

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}

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return $this->upload_url;

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}

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private function prepare_upload_path() {

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$upload = $this->get_wp_upload_dir();

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return untrailingslashit( $upload['basedir'] );

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}

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private function prepare_upload_rel_path() {

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$root_path = $this->get_root_path();

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return str_replace( $root_path, '', $this->get_upload_path() );

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}

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private function prepare_upload_url() {

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$upload = $this->get_wp_upload_dir();

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return untrailingslashit( $upload['baseurl'] );

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}

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private function prepare_wp_upload_dir() {

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if ( ! is_multisite() || is_main_site() ) {

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$upload = wp_upload_dir();

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} else {

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// Use the main site's upload directory for all subsite's webp converted images.

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// This makes it easier to have a single rule on the server configs for serving webp in mu.

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$blog_id = get_main_site_id();

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switch_to_blog( $blog_id );

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$upload = wp_upload_dir();

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restore_current_blog();

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}

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return $upload;

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}

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protected function prepare_root_path() {

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// Is it possible that none of the following conditions are met?

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$root_path = '';

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// Get the Document root path. There must be a better way to do this.

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// For example, /srv/www/site/public_html for /srv/www/site/public_html/wp-content/uploads.

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if ( 0 === strpos( $this->get_upload_path(), ABSPATH ) ) {

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// Environments like Flywheel have an ABSPATH that's not used in the paths.

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$root_path = ABSPATH;

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} elseif ( ! empty( $_SERVER['DOCUMENT_ROOT'] ) && 0 === strpos( $this->get_upload_path(), wp_unslash( $_SERVER['DOCUMENT_ROOT'] ) ) ) {

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/**

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* This gets called when scanning for uncompressed images.

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* When ran from certain contexts, $_SERVER['DOCUMENT_ROOT'] might not be set.

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* We are removing this part from the path later on.

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$root_path = realpath( wp_unslash( $_SERVER['DOCUMENT_ROOT'] ) ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

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} elseif ( 0 === strpos( $this->get_upload_path(), dirname( WP_CONTENT_DIR ) ) ) {

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// We're assuming WP_CONTENT_DIR is only one level deep into the document root.

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// This might not be true in customized sites. A bit edgy.

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$root_path = dirname( WP_CONTENT_DIR );

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}

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$root_path = untrailingslashit( $root_path );

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/**

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* Filters the Document root path used to get relative paths for webp rules.

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* Hopefully of help for debugging and SLS.

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* @since 3.9.0

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return apply_filters( 'smush_webp_rules_root_path_base', $root_path );

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}

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public function get_human_readable_path( $full_path ) {

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return str_replace( WP_CONTENT_DIR, '', $full_path );

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}

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}

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