Ticket #5305: 5305.9.diff

src/wp-includes/query.php

@@ -1743 +1743 @@
                         $qv['withcomments'] = 1;
                 }
 
+                $this->resolve_numeric_slugs();
+
                 $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;
 
                 if ( $this->is_feed && ( !empty($qv['withcomments']) || ( empty($qv['withoutcomments']) && $this->is_singular ) ) )
@@ -2321 +2323 @@
         }
 
         /**
+         * Resolve numeric slugs that collide with date permalinks.
+         *
+         * @since 4.2.0
+         * @access protected
+         */
+        protected function resolve_numeric_slugs() {
+                if ( ! $this->is_date ) {
+                        return;
+                }
+
+                // Identify the 'postname' position in the permastruct array.
+                $permastructs = array_values( array_filter( explode( '/', get_option( 'permalink_structure' ) ) ) );
+
+                $postname_index = array_search( '%postname%', $permastructs );
+
+                if ( false === $postname_index ) {
+                        return;
+                }
+
+                /*
+                 * A numeric slug could be confused with a year, month, or day, depending on position.
+                 * To account for the possibility of post pagination (eg 2015/2 for the second page of a post called
+                 * '2015'), our `is_*` checks are generous: check for year-slug clashes when `is_year` *or* `is_month`,
+                 * and check for month-slug clashes when `is_month` *or* `is_day`.
+                 */
+                $compare = '';
+                if ( 0 === $postname_index && ( $this->is_year || $this->is_month ) ) {
+                        $compare = 'year';
+                } else if ( '%year%' === $permastructs[ $postname_index - 1 ] && ( $this->is_month || $this->is_day ) ) {
+                        $compare = 'monthnum';
+                } else if ( '%monthnum%' === $permastructs[ $postname_index - 1 ] && $this->is_day ) {
+                        $compare = 'day';
+                }
+
+                if ( ! $compare ) {
+                        return;
+                }
+
+                // Set the value of the numeric slug
+                $value = $this->get( $compare );
+
+                /*
+                 * 'day' and 'monthnum' values are cast to integers, which strips leading zeroes.
+                 * If we detect that the value originally passed to the query had a leading zero, re-add it to avoid
+                 * the potential of false slug matches.
+                 */
+                if ( 'year' !== $compare && isset( $this->query[ $compare ] ) && '0' === substr( $this->query[ $compare ], 0, 1 ) ) {
+                        $value = zeroise( $value, 2 );
+                }
+
+                $post = get_page_by_path( $value, OBJECT, 'post' );
+                if ( ! ( $post instanceof WP_Post ) ) {
+                        return;
+                }
+
+                /*
+                 * If the located post contains nextpage pagination, then the URL chunk following postname may be
+                 * intended as the page number. Verify that it's a valid page before resolving to it.
+                 */
+                $maybe_page = '';
+                if ( 'year' === $compare && $this->is_month ) {
+                        $maybe_page = $this->get( 'monthnum' );
+                } else if ( 'monthnum' === $compare && $this->is_day ) {
+                        $maybe_page = $this->get( 'day' );
+                }
+
+                $post_page_count = substr_count( $post->post_content, '<!--nextpage-->' ) + 1;
+
+                // If the post does not have pages, but a 'page' candidate is found, resolve to the date archive.
+                if ( 1 === $post_page_count && $maybe_page ) {
+                        return;
+                }
+
+                // If the post has pages and the 'page' candidate is not a valid page, resolve to the date archive.
+                if ( $post_page_count > 1 && $maybe_page > $post_page_count ) {
+                        return;
+                }
+
+                // If we've gotten to this point, we have a slug/date clash. First, adjust pagination.
+                if ( '' !== $maybe_page ) {
+                        $this->set( 'page', $maybe_page );
+                }
+
+                // Next, unset autodetected date-related query vars.
+                $this->is_archive = false;
+                $this->is_date    = false;
+                $this->is_year    = false;
+                $this->is_month   = false;
+                $this->is_day     = false;
+                $this->set( 'year', '' );
+                $this->set( 'monthnum', '' );
+                $this->set( 'day', '' );
+
+                // Finally, tell the query that it's a singular query for the identified post.
+                $this->is_single   = true;
+                $this->is_singular = true;
+                $this->set( 'name', $post->post_name );
+        }
+
+        /**
          * Sets the 404 property and saves whether query is feed.
          *
          * @since 2.0.0

tests/phpunit/tests/post.php

@@ -470 +470 @@
         }
 
         /**
+         * @ticket 5305
+         */
+        function test_permalink_year_segment_collision_without_title() {
+                global $wp_rewrite, $wpdb;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => rand_str(),
+                        'post_title'   => '',
+                        'post_name'    => '2015',
+                        'post_date'    => '2015-02-01 01:00:00'
+                ) );
+
+                // Force an ID that resembles a year format
+                $wpdb->update(
+                        $wpdb->posts,
+                        array(
+                                'ID'   => '2015',
+                                'guid' => 'http://example.org/?p=2015'
+                        ),
+                        array( 'ID' => $id )
+                );
+
+                $this->go_to( get_permalink( '2015' ) );
+
+                $this->assertQueryTrue( 'is_single', 'is_singular' );
+
+                $wp_rewrite->set_permalink_structure('');
+        }
+
+        /**
+         * @ticket 5305
+         */
+        function test_permalink_year_segment_collision_with_title() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => rand_str(),
+                        'post_title'   => '2015',
+                        'post_date'    => '2015-02-01 01:00:00',
+                ) );
+
+                $this->assertEquals( $id, url_to_postid( get_permalink( $id ) ) );
+
+                $wp_rewrite->set_permalink_structure('');
+        }
+
+        /**
+         * @ticket 5305
+         */
+        function test_permalink_month_segment_collision_without_title() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => rand_str(),
+                        'post_title'   => '',
+                        'post_name'    => '02',
+                        'post_date'    => '2015-02-01 01:00:00',
+                ) );
+
+                $this->go_to( get_permalink( $id ) );
+
+                $this->assertQueryTrue( 'is_single', 'is_singular' );
+
+                $wp_rewrite->set_permalink_structure('');
+        }
+
+        /**
+         * @ticket 5305
+         */
+        function test_permalink_month_segment_collision_without_title_no_leading_zero() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => rand_str(),
+                        'post_title'   => '',
+                        'post_name'    => '2',
+                        'post_date'    => '2015-02-01 01:00:00',
+                ) );
+
+                $this->go_to( get_permalink( $id ) );
+
+                $this->assertQueryTrue( 'is_single', 'is_singular' );
+
+                $wp_rewrite->set_permalink_structure('');
+        }
+
+        /**
+         * @ticket 5305
+         */
+        function test_permalink_month_segment_collision_with_title() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => rand_str(),
+                        'post_title'   => '02',
+                        'post_date'    => '2015-02-01 01:00:00',
+                ) );
+
+                $this->assertEquals( $id, url_to_postid( get_permalink( $id ) ) );
+
+                $wp_rewrite->set_permalink_structure('');
+        }
+
+        /**
+         * @ticket 5305
+         */
+        function test_permalink_month_segment_collision_with_title_no_leading_zero() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => rand_str(),
+                        'post_title'   => '2',
+                        'post_date'    => '2015-02-01 01:00:00',
+                ) );
+
+                $this->assertEquals( $id, url_to_postid( get_permalink( $id ) ) );
+
+                $wp_rewrite->set_permalink_structure('');
+        }
+
+        /**
+         * @ticket 5305
+         */
+        function test_permalink_day_segment_collision_without_title() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%monthnum%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => rand_str(),
+                        'post_title'   => '',
+                        'post_name'    => '01',
+                        'post_date'    => '2015-02-01 01:00:00',
+                ) );
+
+                $this->go_to( get_permalink( $id ) );
+
+                $this->assertQueryTrue( 'is_single', 'is_singular' );
+
+                $wp_rewrite->set_permalink_structure('');
+        }
+
+        /**
+         * @ticket 5305
+         */
+        function test_permalink_day_segment_collision_with_title() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%monthnum%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => rand_str(),
+                        'post_title'   => '01',
+                        'post_date'    => '2015-02-01 01:00:00',
+                ) );
+
+                $this->assertEquals( $id, url_to_postid( get_permalink( $id ) ) );
+
+                $wp_rewrite->set_permalink_structure('');
+        }
+
+        /**
+         * @ticket 5305
+         */
+        public function test_date_slug_collision_should_distinguish_valid_pagination_from_date() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => 'Page 0<!--nextpage-->Page 1<!--nextpage-->Page 2<!--nextpage-->Page 3',
+                        'post_title'   => '02',
+                        'post_date'    => '2015-02-01 01:00:00',
+                ) );
+
+                $this->go_to( get_permalink( $id ) . '1' );
+
+                $this->assertFalse( is_day() );
+        }
+
+        /**
+         * @ticket 5305
+         */
+        public function test_date_slug_collision_should_distinguish_too_high_pagination_from_date() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => 'Page 0<!--nextpage-->Page 1<!--nextpage-->Page 2<!--nextpage-->Page 3',
+                        'post_title'   => '02',
+                        'post_date'    => '2015-02-05 01:00:00',
+                ) );
+
+                $this->go_to( get_permalink( $id ) . '5' );
+
+                $this->assertTrue( is_day() );
+        }
+
+        /**
+         * @ticket 5305
+         */
+        public function test_date_slug_collision_should_not_require_pagination_query_var() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => 'Page 0<!--nextpage-->Page 1<!--nextpage-->Page 2<!--nextpage-->Page 3',
+                        'post_title'   => '02',
+                        'post_date'    => '2015-02-05 01:00:00',
+                ) );
+
+                $this->go_to( get_permalink( $id ) );
+
+                $this->assertQueryTrue( 'is_single', 'is_singular' );
+                $this->assertFalse( is_date() );
+        }
+
+        /**
+         * @ticket 5305
+         */
+        public function test_date_slug_collision_should_be_ignored_when_pagination_var_is_present_but_post_does_not_have_multiple_pages() {
+                global $wp_rewrite;
+                $wp_rewrite->init();
+                $wp_rewrite->set_permalink_structure( '/%year%/%postname%/' );
+                $wp_rewrite->flush_rules();
+
+                $id = $this->factory->post->create( array(
+                        'post_author'  => $this->author_id,
+                        'post_status'  => 'publish',
+                        'post_content' => 'This post does not have pagination.',
+                        'post_title'   => '02',
+                        'post_date'    => '2015-02-05 01:00:00',
+                ) );
+
+                $this->go_to( get_permalink( $id ) . '5' );
+
+                $this->assertTrue( is_day() );
+        }
+
+        /**
          * @ticket 21013
          */
         function test_wp_unique_post_slug_with_non_latin_slugs() {