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benhuson/class-frontend.php

Created February 3, 2012 15:48
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WordPress SEO plugin patch
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class-frontend.php
<?php
class WPSEO_Frontend {
function __construct() {
$options = get_wpseo_options();
add_action( 'wp_head', array(&$this, 'head'), 1, 1 );
remove_action( 'wp_head', 'rel_canonical' );
add_filter( 'wp_title', array(&$this, 'title'), 10, 3 );
add_filter( 'thematic_doctitle', array(&$this, 'force_wp_title') );
add_filter( 'headway_title', array(&$this, 'force_wp_title') );
add_action( 'wp',array(&$this,'page_redirect'), 99, 1 );
add_action( 'login_head', array(&$this, 'noindex_page') );
add_action( 'admin_head', array(&$this, 'noindex_page') );
add_action( 'rss_head', array(&$this, 'noindex_feed') );
add_action( 'rss2_head', array(&$this, 'noindex_feed') );
add_action( 'commentsrss2_head', array(&$this, 'noindex_feed') );
add_filter( 'loginout',array(&$this,'nofollow_link'));
add_filter( 'register',array(&$this,'nofollow_link'));
add_filter( 'comments_popup_link_attributes', array( &$this, 'echo_nofollow' ) );
if ( isset($options['hidersdlink']) && $options['hidersdlink'] )
remove_action('wp_head', 'rsd_link');
if ( isset($options['hidewlwmanifest']) && $options['hidewlwmanifest'] )
remove_action('wp_head', 'wlwmanifest_link');
remove_action('wp_head', 'index_rel_link');
remove_action('wp_head', 'start_post_rel_link');
remove_action('wp_head', 'adjacent_posts_rel_link_wp_head');
if ( isset($options['hideshortlink']) && $options['hideshortlink'] )
remove_action('wp_head', 'wp_shortlink_wp_head');
if ( isset($options['hidefeedlinks']) && $options['hidefeedlinks'] ) {
// TODO: add option to display just normal feed and hide comment feed.
remove_action('wp_head', 'feed_links', 2);
remove_action('wp_head', 'feed_links_extra', 3);
}
if ( ( isset($options['disabledate']) && $options['disabledate'] ) ||
( isset($options['disableauthor']) && $options['disableauthor'] ) ||
( isset($options['disablepostformats']) && $options['disablepostformats'] ) )
add_action('wp', array(&$this, 'archive_redirect') );
if (isset($options['redirectattachment']) && $options['redirectattachment'])
add_action('template_redirect', array(&$this,'attachment_redirect'),1);
if (isset($options['trailingslash']) && $options['trailingslash'])
add_filter('user_trailingslashit', array(&$this, 'add_trailingslash') , 10, 2);
if (isset($options['cleanpermalinks']) && $options['cleanpermalinks'])
add_action('template_redirect',array(&$this,'clean_permalink'),1);
add_filter('the_content_feed', array(&$this, 'embed_rssfooter') );
add_filter('the_excerpt_rss', array(&$this, 'embed_rssfooter_excerpt') );
if (isset($options['forcerewritetitle']) && $options['forcerewritetitle']) {
add_action('get_header', array(&$this, 'force_rewrite_output_buffer') );
add_action('wp_footer', array(&$this, 'flush_cache') );
}
}
function is_home_posts_page() {
return ( is_home() && 'page' != get_option('show_on_front') );
}
function is_home_static_page() {
return ( is_front_page() && 'page' == get_option('show_on_front') && is_page( get_option('page_on_front') ) );
}
function is_posts_page() {
return ( is_home() && 'page' == get_option('show_on_front') );
}
function title( $title, $sep = '-', $seplocation = '', $postid = '' ) {
if ( trim($sep) == '' )
$sep = '-';
$sep = ' '.$sep.' ';
global $wp_query;
if ( is_feed() )
return $title;
$options = get_wpseo_options();
if ( $this->is_home_static_page() ) {
global $post;
$title = wpseo_get_value( 'title', $post->ID );
if ( '' == $title )
$title = wpseo_replace_vars($options['title-'.$post->post_type], (array) $post );
} else if ( $this->is_home_posts_page() ) {
if ( isset($options['title-home']) && $options['title-home'] != '' )
$title = wpseo_replace_vars( $options['title-home'], array() );
else {
$title = get_bloginfo('name');
if ( $wp_query->query_vars['paged'] )
$title .= $sep.$wp_query->query_vars['paged'].'/'.$wp_query->max_num_pages;
$title .= $sep.get_bloginfo('description');
}
} else if ( $this->is_posts_page() ) {
$blogpage = get_post( get_option( 'page_for_posts' ) );
$fixed_title = wpseo_get_value( 'title', $blogpage->ID );
if ( $fixed_title ) {
$title = wpseo_replace_vars( $fixed_title, (array) $blogpage );
} else {
if (isset($options['title-'.$blogpage->post_type]) && !empty($options['title-'.$blogpage->post_type]) )
$title = wpseo_replace_vars($options['title-'.$blogpage->post_type], (array) $blogpage );
else {
$title = get_bloginfo('name');
if ( $wp_query->query_vars['paged'] )
$title .= $sep.$wp_query->query_vars['paged'].'/'.$wp_query->max_num_pages;
$title .= $sep.get_bloginfo('description');
}
}
} else if ( is_singular() ) {
global $post;
if ( empty($post) ) {
$post = $wp_query->get_queried_object();
}
$fixed_title = wpseo_get_value('title');
if ( $fixed_title ) {
$title = $fixed_title;
} else {
if (isset($options['title-'.$post->post_type]) && !empty($options['title-'.$post->post_type]) ) {
$title = wpseo_replace_vars($options['title-'.$post->post_type], (array) $post );
} else {
$title = apply_filters('single_post_title', $title);
$title = $title.$sep.get_bloginfo('name');
}
}
} else if ( is_search() ) {
if ( isset($options['title-search']) && !empty($options['title-search']) )
$title = wpseo_replace_vars($options['title-search'], (array) $wp_query->get_queried_object() );
else {
$title = __('Search for "').get_search_query().'"';
if ( isset($wp_query->query_vars['paged']) && $wp_query->query_vars['paged'] )
$title .= $sep.$wp_query->query_vars['paged'].'/'.$wp_query->max_num_pages;
$title .= $sep.get_bloginfo('name');
}
} else if ( is_category() || is_tag() || is_tax() ) {
$term = $wp_query->get_queried_object();
$title = trim( wpseo_get_term_meta( $term, $term->taxonomy, 'title' ) );
if ( !$title || empty($title) ) {
if ( isset($options['title-'.$term->taxonomy]) && !empty($options['title-'.$term->taxonomy]) ) {
$title = wpseo_replace_vars($options['title-'.$term->taxonomy], (array) $term );
} else {
if ( is_category() )
$title = single_cat_title('', false);
else if ( is_tag() )
$title = single_tag_title('', false);
else if ( is_tax() ) {
if ( function_exists('single_term_title') ) {
$title = single_term_title('', false);
} else {
$term = $wp_query->get_queried_object();
$title = $term->name;
}
}
if ( isset($wp_query->query_vars['paged']) && $wp_query->query_vars['paged'] )
$title .= $sep.$wp_query->query_vars['paged'].'/'.$wp_query->max_num_pages;
$title .= $sep.get_bloginfo('name');
}
}
} else if ( is_author() ) {
$author_id = get_query_var('author');
$title = get_the_author_meta('wpseo_title', $author_id);
if ( empty($title) ) {
if ( isset($options['title-author']) && !empty($options['title-author']) )
$title = wpseo_replace_vars($options['title-author'], array() );
else {
$title = get_the_author_meta('display_name', $author_id);
if ( isset($wp_query->query_vars['paged']) && $wp_query->query_vars['paged'] )
$title .= $sep.$wp_query->query_vars['paged'].'/'.$wp_query->max_num_pages;
$title .= $sep.get_bloginfo('name');
}
}
} else if ( function_exists('is_post_type_archive') && is_post_type_archive() ) {
$post_type = get_post_type();
if ( isset($options['title-ptarchive-'.$post_type]) && '' != $options['title-ptarchive-'.$post_type] ) {
//$title = $options['title-ptarchive-'.$post_type];
// Should be....
$title = wpseo_replace_vars($options['title-ptarchive-'.$post_type], (array) $post );
} else {
$post_type_obj = get_post_type_object( $post_type );
$title = $post_type_obj->labels->menu_name.$sep.get_bloginfo('name');
}
} else if ( is_archive() ) {
if ( isset($options['title-archive']) && !empty($options['title-archive']) )
$title = wpseo_replace_vars($options['title-archive'], array('post_title' => $title) );
else {
if ( is_month() )
$title = single_month_title(' ', false).' '.__('Archives');
else if ( is_year() )
$title = get_query_var('year').' '.__('Archives');
if ( isset($wp_query->query_vars['paged']) && $wp_query->query_vars['paged'] )
$title .= $sep.$wp_query->query_vars['paged'].'/'.$wp_query->max_num_pages;
$title .= $sep.get_bloginfo('name');
}
} else if ( is_404() ) {
if ( isset($options['title-404']) && !empty($options['title-404']) )
$title = wpseo_replace_vars($options['title-404'], array('post_title' => $title) );
else
$title = __('Page not found').$sep.get_bloginfo('name');
}
return esc_html( strip_tags( stripslashes( apply_filters( 'wpseo_title', $title ) ) ) );
}
function force_wp_title() {
wp_reset_query();
return wp_title('', 0);
}
function fix_generator($generator) {
return preg_replace('/\s?'.get_bloginfo('version').'/','',$generator);
}
function promo() {
echo "\n<!-- This site is optimized with the Yoast WordPress SEO plugin v".WPSEO_VERSION." - http://yoast.com/wordpress/seo/ -->\n";
}
function head() {
$options = get_wpseo_options();
global $wp_query;
$this->promo();
$this->metadesc();
$this->metakeywords();
$this->canonical();
$this->adjacent_rel_links();
$this->robots();
if ( is_front_page() ) {
if (!empty($options['googleverify'])) {
$google_meta = $options['googleverify'];
if ( strpos($google_meta, 'content') ) {
preg_match('/content="([^"]+)"/', $google_meta, $match);
$google_meta = $match[1];
}
echo "<meta name=\"google-site-verification\" content=\"$google_meta\" />\n";
}
if (!empty($options['msverify'])) {
$bing_meta = $options['msverify'];
if ( strpos($bing_meta, 'content') ) {
preg_match('/content="([^"]+)"/', $bing_meta, $match);
$bing_meta = $match[1];
}
echo "<meta name=\"msvalidate.01\" content=\"$bing_meta\" />\n";
}
if (!empty($options['alexaverify'])) {
echo "<meta name=\"alexaVerifyID\" content=\"".esc_attr($options['alexaverify'])."\" />\n";
}
}
do_action( 'wpseo_head' );
echo "<!-- / Yoast WordPress SEO plugin. -->\n\n";
}
function robots() {
global $wp_query;
$options = get_wpseo_options();
$robots = array();
$robots['index'] = 'index';
$robots['follow'] = 'follow';
$robots['other'] = array();
if ( is_singular() ) {
if ( wpseo_get_value('meta-robots-noindex') )
$robots['index'] = 'noindex';
if ( wpseo_get_value('meta-robots-nofollow') )
$robots['follow'] = 'nofollow';
if ( wpseo_get_value('meta-robots-adv') && wpseo_get_value('meta-robots-adv') != 'none' ) {
foreach ( explode( ',', wpseo_get_value('meta-robots-adv') ) as $r ) {
$robots['other'][] = $r;
}
}
} else {
if ( is_search() ) {
$robots['index'] = 'noindex';
$robots['follow'] = 'follow';
} else if ( is_tax() || is_tag() || is_category() ) {
$term = $wp_query->get_queried_object();
if ( ( is_category() && isset( $options['noindexcat'] ) && $options['noindexcat'] ) ||
( is_tag() && isset( $options['noindextag'] ) && $options['noindextag']) ||
( is_tax('post_format') && isset( $options['noindexpostformat'] ) && $options['noindexpostformat'] ) ) {
$robots['index'] = 'noindex';
} else {
if ( wpseo_get_term_meta( $term, $term->taxonomy, 'noindex' ) )
$robots['index'] = 'noindex';
}
if ( wpseo_get_term_meta( $term, $term->taxonomy, 'nofollow' ) )
$robots['follow'] = 'nofollow';
} else if (
(is_author() && isset($options['noindexauthor']) && $options['noindexauthor']) ||
(is_date() && isset($options['noindexdate']) && $options['noindexdate']) ||
(is_home() && get_query_var('paged') > 1) )
{
$robots['index'] = 'noindex';
$robots['follow'] = 'follow';
}
if ( $wp_query->query_vars['paged'] && $wp_query->query_vars['paged'] > 1 && isset($options['noindexsubpages']) && $options['noindexsubpages'] ) {
$robots['index'] = 'noindex';
$robots['follow'] = 'follow';
}
}
foreach ( array('noodp','noydir') as $robot ) {
if ( isset($options[$robot]) && $options[$robot] ) {
$robots['other'][] = $robot;
}
}
$robotsstr = $robots['index'].','.$robots['follow'];
$robots['other'] = array_unique( $robots['other'] );
foreach ($robots['other'] as $robot) {
$robotsstr .= ','.$robot;
}
$robotsstr = preg_replace( '/^index,follow,?/', '', $robotsstr );
if ($robotsstr != '') {
echo '<meta name="robots" content="'.$robotsstr.'"/>'."\n";
}
}
function canonical( $echo = true, $unpaged = false ) {
$options = get_wpseo_options();
$canonical = false;
// Set decent canonicals for homepage, singulars and taxonomy pages
if ( is_singular() ) {
if ( wpseo_get_value('canonical') && wpseo_get_value('canonical') != '' ) {
$canonical = wpseo_get_value('canonical');
} else {
$canonical = get_permalink( get_queried_object() );
// Fix paginated pages
if ( get_query_var('page') > 1 ) {
global $wp_rewrite;
if ( !$wp_rewrite->using_permalinks() ) {
$link = add_query_arg( 'page', get_query_var('page'), $link );
} else {
$link = user_trailingslashit( trailingslashit( $link ) . get_query_var( 'page' ) );
}
}
}
} else {
if ( is_search() ) {
$canonical = get_search_link();
} else if ( is_front_page() ) {
$canonical = home_url( '/' );
} else if ( $this->is_posts_page() ) {
$canonical = get_permalink( get_option( 'page_for_posts' ) );
} else if ( is_tax() || is_tag() || is_category() ) {
$term = get_queried_object();
$canonical = wpseo_get_term_meta( $term, $term->taxonomy, 'canonical' );
if ( !$canonical )
$canonical = get_term_link( $term, $term->taxonomy );
} else if ( function_exists('get_post_type_archive_link') && is_post_type_archive() ) {
$canonical = get_post_type_archive_link( get_post_type() );
} else if ( is_author() ) {
$canonical = get_author_posts_url( get_query_var('author'), get_query_var('author_name') );
} else if ( is_archive() ) {
if ( is_date() ) {
if ( is_day() ) {
$canonical = get_day_link( get_query_var('year'), get_query_var('monthnum'), get_query_var('day') );
} else if ( is_month() ) {
$canonical = get_month_link( get_query_var('year'), get_query_var('monthnum') );
} else if ( is_year() ) {
$canonical = get_year_link( get_query_var('year') );
}
}
}
if ( $canonical && $unpaged )
return $canonical;
if ( $canonical && get_query_var('paged') > 1 ) {
global $wp_rewrite;
if ( !$wp_rewrite->using_permalinks() ) {
$canonical = add_query_arg( 'paged', get_query_var('paged'), $canonical );
} else {
$canonical = user_trailingslashit( trailingslashit( $canonical ) . trailingslashit( $wp_rewrite->pagination_base ) . get_query_var('paged') );
}
}
}
if ( $canonical && isset($options['force_transport']) && 'default' != $options['force_transport'] )
$canonical = preg_replace( '/https?/', $options['force_transport'], $canonical );
$canonical = apply_filters( 'wpseo_canonical', $canonical );
if ( $canonical && !is_wp_error( $canonical ) ) {
if ( $echo )
echo '<link rel="canonical" href="' . esc_url( $canonical, null, 'other' ) . '" />'."\n";
else
return $canonical;
}
}
/**
* Adds 'prev' and 'next' links to archives, as described in this Google blog post: http://googlewebmastercentral.blogspot.com/2011/09/pagination-with-relnext-and-relprev.html
*
* @since 1.0.3
*/
function adjacent_rel_links() {
global $wp_query;
if ( !is_singular() ) {
$url = $this->canonical( false, true );
if ( $url ) {
$paged = get_query_var('paged');
if ( 0 == $paged )
$paged = 1;
if ( $paged > 1 )
$this->get_adjacent_rel_link( "prev", $url, $paged-1, true );
if ( $paged < $wp_query->max_num_pages )
$this->get_adjacent_rel_link( "next", $url, $paged+1, true );
}
} else {
$numpages = substr_count( $wp_query->post->post_content, '<!--nextpage-->' ) + 1;
if ( $numpages > 1 ) {
$page = get_query_var('page');
if ( !$page )
$page = 1;
$url = get_permalink( $wp_query->post->ID );
// If the current page is the frontpage, pagination should use /base/
if ( $this->is_home_static_page() )
$usebase = true;
else
$usebase = false;
if ( $page > 1 )
$this->get_adjacent_rel_link( "prev", $url, $page-1, $usebase, 'single_paged' );
if ( $page < $numpages )
$this->get_adjacent_rel_link( "next", $url, $page+1, $usebase, 'single_paged' );
}
}
}
/**
* Get adjacent pages link for archives
*
* @param string $rel Link relationship, prev or next.
* @param string $url the unpaginated URL of the current archive.
* @param string $page the page number to add on to $url for the $link tag.
* @param boolean $incl_pagination_base whether or not to include /page/ or not.
* @return string $link link element
*
* @since 1.0.2
*/
function get_adjacent_rel_link( $rel, $url, $page, $incl_pagination_base ) {
global $wp_rewrite;
if ( !$wp_rewrite->using_permalinks() ) {
if ( $page > 1 )
$url = add_query_arg( 'paged', $page, $url );
} else {
if ( $page > 1 ) {
$base = '';
if ( $incl_pagination_base )
$base = trailingslashit( $wp_rewrite->pagination_base );
$url = user_trailingslashit( trailingslashit( $url ) . $base . $page );
}
}
$link = "<link rel=\"$rel\" href=\"$url\" />\n";
echo apply_filters( $rel."_rel_link", $link );
}
function metakeywords() {
global $wp_query;
$options = get_wpseo_options();
if ( !isset( $options['usemetakeywords'] ) || !$options['usemetakeywords'] )
return;
$metakey = '';
if ( is_singular() ) {
global $post;
$metakey = wpseo_get_value('metakeywords');
if ( !$metakey || empty( $metakey ) && isset( $options['metakey-'.$post->post_type] ) ) {
$metakey = wpseo_replace_vars($options['metakey-'.$post->post_type], (array) $post );
}
} else {
if ( $this->is_home_posts_page() && isset($options['metakey-home']) ) {
$metakey = wpseo_replace_vars($options['metakey-home'], array() );
} else if ( $this->is_home_static_page() ) {
global $post;
$metakey = wpseo_get_value('metakey');
if ( ($metakey == '' || !$metakey) && isset($options['metakey-'.$post->post_type]) )
$metakey = wpseo_replace_vars($options['metakey-'.$post->post_type], (array) $post );
} else if ( is_category() || is_tag() || is_tax() ) {
$term = $wp_query->get_queried_object();
$metakey = wpseo_get_term_meta( $term, $term->taxonomy, 'metakey' );
if ( !$metakey && isset($options['metakey-'.$term->taxonomy]))
$metakey = wpseo_replace_vars($options['metakey-'.$term->taxonomy], (array) $term );
} else if ( is_author() ) {
$author_id = get_query_var('author');
$metakey = get_the_author_meta('metakey', $author_id);
if ( !$metakey && isset($options['metakey-author']) )
$metakey = wpseo_replace_vars($options['metakey-author'], (array) $wp_query->get_queried_object() );
}
}
$metakey = trim( $metakey );
if ( !empty( $metakey ) )
echo '<meta name="keywords" content="'.esc_attr( strip_tags( stripslashes( $metakey ) ) ).'"/>'."\n";
}
function metadesc( $echo = true ) {
if ( get_query_var('paged') && get_query_var('paged') > 1 )
return;
global $post, $wp_query;
$options = get_wpseo_options();
$metadesc = '';
if (is_singular()) {
$metadesc = wpseo_get_value('metadesc');
if ($metadesc == '' || !$metadesc) {
if ( isset($options['metadesc-'.$post->post_type]) && $options['metadesc-'.$post->post_type] != '' )
$metadesc = wpseo_replace_vars($options['metadesc-'.$post->post_type], (array) $post );
}
} else {
if ( is_search() ) {
$metadesc = '';
} else if ( $this->is_home_posts_page() && isset($options['metadesc-home']) ) {
$metadesc = wpseo_replace_vars($options['metadesc-home'], array() );
} else if ( $this->is_posts_page() ) {
$metadesc = wpseo_get_value('metadesc', get_option('page_for_posts') );
if ( ($metadesc == '' || !$metadesc) && isset( $options['metadesc-'.$page->post_type] ) ) {
$page = get_post( get_option('page_for_posts') );
$metadesc = wpseo_replace_vars( $options['metadesc-'.$page->post_type], (array) $page );
}
} else if ( $this->is_home_static_page() ) {
global $post;
$metadesc = wpseo_get_value('metadesc');
if ( ($metadesc == '' || !$metadesc) && isset($options['metadesc-'.$post->post_type]) )
$metadesc = wpseo_replace_vars($options['metadesc-'.$post->post_type], (array) $post );
} else if ( is_category() || is_tag() || is_tax() ) {
$term = $wp_query->get_queried_object();
$metadesc = wpseo_get_term_meta( $term, $term->taxonomy, 'desc' );
if ( !$metadesc && isset($options['metadesc-'.$term->taxonomy]))
$metadesc = wpseo_replace_vars($options['metadesc-'.$term->taxonomy], (array) $term );
} else if ( is_author() ) {
$author_id = get_query_var('author');
$metadesc = get_the_author_meta('wpseo_metadesc', $author_id);
if ( !$metadesc && isset($options['metadesc-author']))
$metadesc = wpseo_replace_vars($options['metadesc-author'], (array) $wp_query->get_queried_object() );
} else if ( function_exists('is_post_type_archive') && is_post_type_archive() ) {
$post_type = get_post_type();
if ( isset($options['metadesc-ptarchive-'.$post_type]) && '' != $options['metadesc-ptarchive-'.$post_type] ) {
$metadesc = $options['metadesc-ptarchive-'.$post_type];
}
}
}
$metadesc = apply_filters( 'wpseo_metadesc', trim( $metadesc ) );
if ( $echo ) {
if ( !empty( $metadesc ) )
echo '<meta name="description" content="'.esc_attr( strip_tags( stripslashes( $metadesc ) ) ).'"/>'."\n";
else if ( current_user_can('manage_options') && is_singular() )
echo '<!-- '.__( 'Admin only notice: this page doesn\'t show a meta description because it doesn\'t have one, either write it for this page specifically or go into the SEO -> Titles menu and set up a template.', 'wordpress-seo' ).' -->'."\n";
} else {
return $metadesc;
}
}
function page_redirect( $input ) {
if ( is_singular() ) {
global $post;
if ( !isset($post) )
return;
$redir = wpseo_get_value('redirect', $post->ID);
if (!empty($redir)) {
wp_redirect($redir, 301);
exit;
}
}
}
function noindex_page() {
$this->promo();
echo '<meta name="robots" content="noindex" />'."\n";
}
function noindex_feed() {
echo '<xhtml:meta xmlns:xhtml="http://www.w3.org/1999/xhtml" name="robots" content="noindex" />'."\n";
}
function nofollow_link($output) {
return str_replace('<a ','<a rel="nofollow" ',$output);
}
function echo_nofollow() {
return ' rel="nofollow"';
}
function archive_redirect() {
global $wp_query;
$options = get_wpseo_options();
if (
( isset($options['disabledate']) && $options['disabledate'] && $wp_query->is_date ) ||
( isset($options['disableauthor']) && $options['disableauthor'] && $wp_query->is_author ) ||
( isset($options['disablepostformats']) && $options['disablepostformats'] && $wp_query->is_tax('post_format') )
) {
wp_redirect(get_bloginfo('url'),301);
exit;
}
}
function attachment_redirect() {
global $post;
if ( is_attachment() && isset($post->post_parent) && is_numeric($post->post_parent) ) {
wp_redirect(get_permalink($post->post_parent), 301);
exit;
}
}
function add_trailingslash($url, $type) {
// trailing slashes for everything except is_single()
// Thanks to Mark Jaquith for this
if ( 'single' === $type ) {
return $url;
} else {
return trailingslashit($url);
}
}
public function clean_permalink( $headers ) {
if ( is_robots() || get_query_var('sitemap') )
return;
global $wp_query;
$options = get_wpseo_options();
// Recreate current URL
$cururl = 'http';
if (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == "on") {
$cururl .= "s";
}
$cururl .= "://";
if ($_SERVER["SERVER_PORT"] != "80")
$cururl .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
else
$cururl .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
$properurl = '';
if ( is_singular() ) {
global $post;
if ( empty($post) )
$post = $wp_query->get_queried_object();
$properurl = get_permalink($post->ID);
$page = get_query_var('page');
if ( $page && $page != 1 ) {
$post = get_post($post->ID);
$page_count = substr_count($post->post_content, '<!--nextpage-->');
if ( $page > ($page_count+1) )
$properurl = user_trailingslashit( trailingslashit( $properurl ) . ( $page_count + 1 ) );
else
$properurl = user_trailingslashit( trailingslashit( $properurl ) . $page );
}
// Fix reply to comment links, whoever decided this should be a GET variable?
$result = preg_match('/(\?replytocom=[^&]+)/', $_SERVER["REQUEST_URI"], $matches);
if ( $result )
$properurl .= str_replace('?replytocom=','#comment-',$matches[0]);
// Prevent cleaning out posts & page previews for people capable of viewing them
if ( isset($_GET['preview']) && isset($_GET['preview_nonce']) && current_user_can('edit_post') )
$properurl = '';
} else if ( is_front_page() ) {
if ( $this->is_home_posts_page() ) {
$properurl = get_bloginfo('url').'/';
} elseif ( $this->is_home_static_page() ) {
global $post;
$properurl = get_permalink( $post->ID );
}
} else if ( is_category() || is_tag() || is_tax() ) {
$term = $wp_query->get_queried_object();
if ( is_feed() )
$properurl = get_term_feed_link( $term, $term->taxonomy );
else
$properurl = get_term_link( $term, $term->taxonomy );
} else if ( is_search() ) {
$s = preg_replace( '/(%20|\+)/', ' ', get_search_query() );
$properurl = get_bloginfo('url').'/?s=' . rawurlencode( $s );
} else if ( is_404() ) {
if ( function_exists('is_multisite') && is_multisite() && !is_subdomain_install() && is_main_site() ) {
if ($cururl == get_bloginfo('url').'/blog/' || $cururl == get_bloginfo('url').'/blog' ) {
if ( $this->is_home_static_page() )
$properurl = get_permalink( get_option('page_for_posts') );
else
$properurl = get_bloginfo('url').'/';
}
}
}
if ( !empty($properurl) && $wp_query->query_vars['paged'] != 0 && $wp_query->post_count != 0 ) {
if ( is_search() ) {
$properurl = get_bloginfo('url').'/page/' . $wp_query->query_vars['paged'] . '/?s=' . rawurlencode( $s );
} else {
$properurl = user_trailingslashit( trailingslashit($properurl). 'page/' . $wp_query->query_vars['paged'] );
}
}
// Prevent cleaning out the WP Subscription managers interface for everyone
foreach (array('wp-subscription-manager') as $get) {
if ( isset($_GET[$get]) ) {
$properurl = '';
}
}
// Allow plugins to register their own variables not to clean
$whitelisted_extravars = apply_filters( 'wpseo_whitelist_permalink_vars', array() );
if (isset($options['cleanpermalink-googlesitesearch']) && $options['cleanpermalink-googlesitesearch']) {
// Prevent cleaning out Google Site searches
$whitelisted_extravars = array_merge( $whitelisted_extravars, array('q','cx','debug','cof','ie','sa') );
}
if (isset($options['cleanpermalink-googlecampaign']) && $options['cleanpermalink-googlecampaign']) {
// Prevent cleaning out Google Analytics campaign variables
$whitelisted_extravars = array_merge( $whitelisted_extravars, array('utm_campaign','utm_medium','utm_source','utm_content','utm_term') );
}
if ( isset($options['cleanpermalink-extravars']) && strlen($options['cleanpermalink-extravars']) > 0 ) {
$whitelisted_extravars = array_merge( $whitelisted_extravars, explode( ',', $options['cleanpermalink-extravars'] ) );
}
foreach ( $whitelisted_extravars as $get ) {
if ( isset($_GET[ trim( $get ) ]) ) {
$properurl = '';
}
}
if ( !empty($properurl) && $cururl != $properurl ) {
wp_redirect($properurl, 301);
exit;
}
}
function rss_replace_vars($temp) {
global $post;
$authorlink = '<a rel="author" href="'.get_author_posts_url( $post->post_author ).'">'.get_the_author().'</a>';
$postlink = '<a href="'.get_permalink().'">'.get_the_title()."</a>";
$bloglink = '<a href="'.get_bloginfo('url').'">'.get_bloginfo('name').'</a>';
$blogdesclink = '<a href="'.get_bloginfo('url').'">'.get_bloginfo('name').' - '.get_bloginfo('description').'</a>';
$temp = stripslashes($temp);
$temp = str_replace("%%AUTHORLINK%%", $authorlink, $temp);
$temp = str_replace("%%POSTLINK%%", $postlink, $temp);
$temp = str_replace("%%BLOGLINK%%", $bloglink, $temp);
$temp = str_replace("%%BLOGDESCLINK%%", $blogdesclink, $temp);
return $temp;
}
function embed_rssfooter($content) {
if(is_feed()) {
$options = get_wpseo_options();
if ( isset($options['rssbefore']) && !empty($options['rssbefore']) ) {
$content = "<p>" . $this->rss_replace_vars($options['rssbefore']) . "</p>" . $content;
}
if ( isset($options['rssafter']) && !empty($options['rssafter']) ) {
$content .= "<p>" . $this->rss_replace_vars($options['rssafter']). "</p>";
}
}
return $content;
}
function embed_rssfooter_excerpt($content) {
if(is_feed()) {
$options = get_wpseo_options();
if ( isset($options['rssbefore']) && !empty($options['rssbefore']) ) {
$content = "<p>".$this->rss_replace_vars($options['rssbefore']) . "</p><p>" . $content ."</p>";
}
if ( isset($options['rssafter']) && !empty($options['rssafter']) ) {
$content = "<p>".$content."</p><p>".$this->rss_replace_vars($options['rssafter'])."</p>";
}
}
return $content;
}
function flush_cache() {
global $wp_query, $post, $wpseo_ob;
if ( !$wpseo_ob )
return;
$content = ob_get_contents();
$title = $this->title( '' );
$content = preg_replace('/<title>(.*)<\/title>/','<title>'.$title.'</title>', $content);
ob_end_clean();
echo $content;
}
function force_rewrite_output_buffer() {
global $wpseo_ob;
$wpseo_ob = true;
ob_start();
}
}
$wpseo_front = new WPSEO_Frontend;
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