first commit

wp-content/plugins/polylang-pro/vendor/wpsyntex/polylang/integrations/cache/cache-compat.php

@@ -0,0 +1,105 @@
+<?php
+/**
+ * @package Polylang
+ */
+
+/**
+ * A class to manage specific compatibility issue with cache plugins
+ * Tested with WP Rocket 2.10.7
+ *
+ * @since 2.3
+ */
+class PLL_Cache_Compat {
+	/**
+	 * Setups actions
+	 *
+	 * @since 2.3
+	 */
+	public function init() {
+		if ( PLL_COOKIE ) {
+			add_action( 'wp_print_footer_scripts', array( $this, 'add_cookie_script' ) );
+		}
+
+		// Since version 3.0.5, WP Rocket does not serve the cached page if our cookie is not set
+		if ( ! defined( 'WP_ROCKET_VERSION' ) || version_compare( WP_ROCKET_VERSION, '3.0.5', '<' ) ) {
+			add_action( 'wp', array( $this, 'do_not_cache_site_home' ) );
+		}
+
+		add_action( 'clean_post_cache', array( $this, 'clean_post_cache' ), 1 );
+	}
+
+	/**
+	 * Currently all tested cache plugins don't send cookies with cached pages.
+	 * This makes us impossible to know the language of the last browsed page.
+	 * This functions allows to create the cookie in javascript as a workaround.
+	 *
+	 * @since 2.3
+	 */
+	public function add_cookie_script() {
+		// Embeds should not set the cookie.
+		if ( is_embed() ) {
+			return;
+		}
+
+		$domain   = ( 2 === PLL()->options['force_lang'] ) ? wp_parse_url( PLL()->links_model->home, PHP_URL_HOST ) : COOKIE_DOMAIN;
+		$samesite = ( 3 === PLL()->options['force_lang'] ) ? 'None' : 'Lax';
+
+		/** This filter is documented in include/cookie.php */
+		$expiration = (int) apply_filters( 'pll_cookie_expiration', YEAR_IN_SECONDS );
+
+		if ( 0 !== $expiration ) {
+			$format = 'var expirationDate = new Date();
+				expirationDate.setTime( expirationDate.getTime() + %7$d * 1000 );
+				document.cookie = "%1$s=%2$s; expires=" + expirationDate.toUTCString() + "; path=%3$s%4$s%5$s%6$s";';
+		} else {
+			$format = 'document.cookie = "%1$s=%2$s; path=%3$s%4$s%5$s%6$s";';
+		}
+
+		$js = sprintf(
+			"(function() {
+				{$format}
+			}());\n",
+			esc_js( PLL_COOKIE ),
+			esc_js( pll_current_language() ),
+			esc_js( COOKIEPATH ),
+			$domain ? '; domain=' . esc_js( $domain ) : '',
+			is_ssl() ? '; secure' : '',
+			'; SameSite=' . $samesite,
+			esc_js( $expiration )
+		);
+
+		$type_attr = current_theme_supports( 'html5', 'script' ) ? '' : ' type="text/javascript"';
+
+		echo "<script{$type_attr}>\n{$js}\n</script>\n"; // phpcs:ignore WordPress.Security.EscapeOutput
+	}
+
+	/**
+	 * Informs cache plugins not to cache the home in the default language
+	 * When the detection of the browser preferred language is active
+	 *
+	 * @since 2.3
+	 */
+	public function do_not_cache_site_home() {
+		if ( ! defined( 'DONOTCACHEPAGE' ) && PLL()->options['browser'] && PLL()->options['hide_default'] && is_front_page() && pll_current_language() === pll_default_language() ) {
+			define( 'DONOTCACHEPAGE', true );
+		}
+	}
+
+	/**
+	 * Allows cache plugins to clean the right post type archive cache when cleaning a post cache.
+	 *
+	 * @since 3.0.5
+	 *
+	 * @param int $post_id Post id.
+	 */
+	public function clean_post_cache( $post_id ) {
+		$lang = PLL()->model->post->get_language( $post_id );
+
+		if ( $lang ) {
+			$filter_callback = function ( $link, $post_type ) use ( $lang ) {
+				return pll_is_translated_post_type( $post_type ) && 'post' !== $post_type ? PLL()->links_model->switch_language_in_link( $link, $lang ) : $link;
+			};
+			add_filter( 'post_type_archive_link', $filter_callback, 99, 2 );
+		}
+	}
+}

wp-content/plugins/polylang-pro/vendor/wpsyntex/polylang/integrations/cache/load.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Loads the integration with cache plugins.
+ *
+ * @package Polylang
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Don't access directly.
+}
+
+add_action(
+	'plugins_loaded',
+	function () {
+		if ( pll_is_cache_active() ) {
+			add_action( 'pll_init', array( PLL_Integrations::instance()->cache_compat = new PLL_Cache_Compat(), 'init' ) );
+		}
+	},
+	0
+);