← All changes | lib/link-rel.php +193 -0 22.1.0 → 22.7.0 View file →

		@@ -1,0 +1,193 @@
	1	+<?php
	2	+/*
	3	+ * License: GPLv3
	4	+ * License URI: https://www.gnu.org/licenses/gpl.txt
	5	+ * Copyright 2012-2026 Jean-Sebastien Morisset (https://wpsso.com/)
	6	+ */
	7	+
	8	+if ( ! defined( 'ABSPATH' ) ) {
	9	+
	10	+ die( 'These aren\'t the droids you\'re looking for.' );
	11	+}
	12	+
	13	+if ( ! defined( 'WPSSO_PLUGINDIR' ) ) {
	14	+
	15	+ die( 'Do. Or do not. There is no try.' );
	16	+}
	17	+
	18	+if ( ! class_exists( 'WpssoLinkRel' ) ) {
	19	+
	20	+ class WpssoLinkRel {
	21	+
	22	+ private $p; // Wpsso class object.
	23	+
	24	+ public function __construct( &$plugin ) {
	25	+
	26	+ $this->p =& $plugin;
	27	+
	28	+ if ( $this->p->debug->enabled ) {
	29	+
	30	+ $this->p->debug->mark();
	31	+ }
	32	+
	33	+ /*
	34	+ * Always disable the WordPress shortlink meta tag.
	35	+ */
	36	+ if ( $this->p->debug->enabled ) {
	37	+
	38	+ $this->p->debug->log( 'removing default wp_shortlink_wp_head action' );
	39	+ }
	40	+
	41	+ remove_action( 'wp_head', 'wp_shortlink_wp_head' );
	42	+
	43	+ add_action( 'wp_head', array( $this, 'maybe_disable_rel_canonical' ), -1000 );
	44	+
	45	+ if ( ! empty( $this->p->avail[ 'amp' ][ 'any' ] ) ) {
	46	+
	47	+ add_action( 'amp_post_template_head', array( $this, 'maybe_disable_rel_canonical' ), -1000 );
	48	+ }
	49	+ }
	50	+
	51	+ /*
	52	+ * Maybe disable the WordPress and AMP canonical tags.
	53	+ *
	54	+ * Called by 'wp_head' and 'amp_post_template_head' actions.
	55	+ */
	56	+ public function maybe_disable_rel_canonical() {
	57	+
	58	+ if ( $this->p->debug->enabled ) {
	59	+
	60	+ $this->p->debug->mark();
	61	+ }
	62	+
	63	+ /*
	64	+ * WpssoUtil->is_canonical_disabled() returns true if:
	65	+ *
	66	+ * - An SEO plugin is active.
	67	+ * - The 'add_link_rel_canonical' option is unchecked.
	68	+ * - The 'wpsso_add_link_rel_canonical' filter returns false.
	69	+ * - The 'wpsso_canonical_disabled' filter returns true.
	70	+ */
	71	+ if ( $this->p->util->is_canonical_disabled() ) {
	72	+
	73	+ if ( $this->p->debug->enabled ) {
	74	+
	75	+ $this->p->debug->log( 'exiting early: canonical is disabled' );
	76	+ }
	77	+
	78	+ return;
	79	+ }
	80	+
	81	+ /*
	82	+ * If WPSSO is providing the canonical URL, then disable the WordPress and AMP canonical meta tags.
	83	+ */
	84	+ $current = function_exists( 'current_action' ) ? current_action() : current_filter();
	85	+
	86	+ switch( $current ) {
	87	+
	88	+ case 'wp_head':
	89	+
	90	+ remove_filter( $current, 'rel_canonical' );
	91	+ remove_action( $current, 'amp_frontend_add_canonical' );
	92	+
	93	+ break;
	94	+
	95	+ case 'amp_post_template_head':
	96	+
	97	+ remove_action( $current, 'amp_post_template_add_canonical' );
	98	+
	99	+ break;
	100	+ }
	101	+ }
	102	+
	103	+ /*
	104	+ * Link Relation URL Tags.
	105	+ */
	106	+ public function get_array( array $mod, array $mt_og = array(), $author_id = false ) {
	107	+
	108	+ if ( $this->p->debug->enabled ) {
	109	+
	110	+ $this->p->debug->mark();
	111	+ }
	112	+
	113	+ $link_rel = apply_filters( 'wpsso_link_rel_seed', array(), $mod );
	114	+
	115	+ /*
	116	+ * Link rel canonical.
	117	+ *
	118	+ * WpssoUtil->is_canonical_disabled() returns true if:
	119	+ *
	120	+ * - An SEO plugin is active.
	121	+ * - The 'add_link_rel_canonical' option is unchecked.
	122	+ * - The 'wpsso_add_link_rel_canonical' filter returns false.
	123	+ * - The 'wpsso_canonical_disabled' filter returns true.
	124	+ */
	125	+ if ( ! $this->p->util->is_canonical_disabled() ) {
	126	+
	127	+ $link_rel[ 'canonical' ] = $this->p->util->get_canonical_url( $mod );
	128	+
	129	+ } elseif ( $this->p->debug->enabled ) {
	130	+
	131	+ $this->p->debug->log( 'skipping canonical: canonical is disabled' );
	132	+ }
	133	+
	134	+ /*
	135	+ * Link rel shortlink.
	136	+ *
	137	+ * WpssoUtil->is_shortlink_disabled() returns true if:
	138	+ *
	139	+ * - The 'add_link_rel_shortlink' option is unchecked.
	140	+ * - The 'wpsso_add_link_rel_shortlink' filter returns false.
	141	+ * - The 'wpsso_shortlink_disabled' filter returns true.
	142	+ */
	143	+ if ( ! $this->p->util->is_shortlink_disabled() ) {
	144	+
	145	+ $canonical_url = $this->p->util->get_canonical_url( $mod );
	146	+
	147	+ $shortlink = '';
	148	+
	149	+ if ( $mod[ 'is_post' ] && $mod[ 'id' ] ) {
	150	+
	151	+ $shortlink = $this->p->util->get_shortlink( $mod, $context = 'post' );
	152	+
	153	+ } elseif ( ! empty( $canonical_url ) ) { // Just in case.
	154	+
	155	+ /*
	156	+ * Shorten URL using the selected shortening service.
	157	+ */
	158	+ if ( $this->p->debug->enabled ) {
	159	+
	160	+ $this->p->debug->log( 'calling WpssoUtil->shorten_url() to shorten the canonical URL' );
	161	+ }
	162	+
	163	+ $shortlink = $this->p->util->shorten_url( $canonical_url, $mod );
	164	+ }
	165	+
	166	+ if ( empty( $shortlink ) ) {
	167	+
	168	+ if ( $this->p->debug->enabled ) {
	169	+
	170	+ $this->p->debug->log( 'skipping shortlink: short url is empty' );
	171	+ }
	172	+
	173	+ } elseif ( $shortlink === $canonical_url ) {
	174	+
	175	+ if ( $this->p->debug->enabled ) {
	176	+
	177	+ $this->p->debug->log( 'skipping shortlink: short url is identical to canonical url' );
	178	+ }
	179	+
	180	+ } else {
	181	+
	182	+ $link_rel[ 'shortlink' ] = $shortlink;
	183	+ }
	184	+
	185	+ } elseif ( $this->p->debug->enabled ) {
	186	+
	187	+ $this->p->debug->log( 'skipping shortlink: shortlink is disabled' );
	188	+ }
	189	+
	190	+ return apply_filters( 'wpsso_link_rel', $link_rel, $mod );
	191	+ }
	192	+ }
	193	+}