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More cautious canonical-ness. Exclude IIS and POSTs. Better paging handling. Still a work in progress! see #4773 

git-svn-id: http://svn.automattic.com/wordpress/trunk@5978 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
markjaquith 2007-08-29 21:06:51 +00:00
parent 440c4dedd6
commit 816f89fb03
1 changed files with 63 additions and 41 deletions
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104
wp-includes/canonical.php
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@ -2,9 +2,9 @@
// Based on "Permalink Redirect" from Scott Yang and "Enforce www. Preference" by Mark Jaquith
function redirect_canonical() {
global $wp_rewrite, $posts;
global $wp_rewrite, $posts, $is_IIS;
if ( is_feed() || is_trackback() || is_search() || is_comments_popup() || is_admin() )
if ( is_feed() || is_trackback() || is_search() || is_comments_popup() || is_admin() || $is_IIS || ( isset($_POST) && count($_POST) ) )
return;
// build the URL in the address bar
@ -24,13 +24,13 @@ function redirect_canonical() {
$redirect_url = redirect_guess_404_permalink();
} elseif ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) {
// rewriting of old ?p=X, ?m=2004, ?m=200401, ?m=20040101
if ( is_single() && get_query_var('p') ) {
if ( is_single() && isset($_GET['p']) ) {
if ( $redirect_url = get_permalink(get_query_var('p')) )
$redirect['query'] = remove_query_arg('p', $redirect['query']);
} elseif ( is_page() && get_query_var('page_id') ) {
} elseif ( is_page() && isset($_GET['page_id']) ) {
if ( $redirect_url = get_permalink(get_query_var('page_id')) )
$redirect['query'] = remove_query_arg('page_id', $redirect['query']);
} elseif ( get_query_var('m') && ( is_year() || is_month() || is_day() ) ) {
} elseif ( isset($_GET['m']) && ( is_year() || is_month() || is_day() ) ) {
$m = get_query_var('m');
switch ( strlen($m) ) {
case 4: // Yearly
@ -46,19 +46,19 @@ function redirect_canonical() {
if ( $redirect_url )
$redirect['query'] = remove_query_arg('m', $redirect['query']);
// now moving on to non ?m=X year/month/day links
} elseif ( is_day() && get_query_var('year') && get_query_var('monthnum') && get_query_var('day') ) {
} elseif ( is_day() && get_query_var('year') && get_query_var('monthnum') && isset($_GET['day']) ) {
if ( $redirect_url = get_day_link(get_query_var('year'), get_query_var('monthnum'), get_query_var('day')) )
$redirect['query'] = remove_query_arg(array('year', 'monthnum', 'day'), $redirect['query']);
} elseif ( is_month() && get_query_var('year') && get_query_var('monthnum') ) {
} elseif ( is_month() && get_query_var('year') && isset($_GET['monthnum']) ) {
if ( $redirect_url = get_month_link(get_query_var('year'), get_query_var('monthnum')) )
$redirect['query'] = remove_query_arg(array('year', 'monthnum'), $redirect['query']);
} elseif ( is_year() && get_query_var('year') ) {
} elseif ( is_year() && isset($_GET['year']) ) {
if ( $redirect_url = get_year_link(get_query_var('year')) )
$redirect['query'] = remove_query_arg('year', $redirect['query']);
} elseif ( is_category() && get_query_var('cat') ) {
} elseif ( is_category() && isset($_GET['cat']) ) {
if ( $redirect_url = get_category_link(get_query_var('cat')) )
$redirect['query'] = remove_query_arg('cat', $redirect['query']);
} elseif ( is_author() && get_query_var('author') ) {
} elseif ( is_author() && isset($_GET['author']) ) {
$author = get_userdata(get_query_var('author'));
if ( false !== $author && $redirect_url = get_author_link(false, $author->ID, $author->user_nicename) )
$redirect['query'] = remove_query_arg('author', $redirect['author']);
@ -66,48 +66,70 @@ function redirect_canonical() {
// paging
if ( $paged = get_query_var('paged') ) {
if ( $paged > 1 ) {
if ( $paged > 0 ) {
if ( !$redirect_url )
$redirect_url = $requested_url;
$paged_redirect = @parse_url($redirect_url);
$paged_redirect['path'] = preg_replace('|/index.php/?$|', '/', $paged_redirect['path']);
$paged_redirect['path'] = trailingslashit($paged_redirect['path']);
if ( $wp_rewrite->using_index_permalinks() && strpos($paged_redirect['path'], '/index.php/') === false )
$paged_redirect['path'] .= 'index.php/';
$paged_redirect['path'] .= user_trailingslashit("page/$paged");
$paged_redirect['path'] = preg_replace('|/page/[0-9]+?/?$|', '/', $paged_redirect['path']); // strip off any existing paging
$paged_redirect['path'] = preg_replace('|/index.php/?$|', '/', $paged_redirect['path']); // strip off trailing /index.php/
if ( $paged > 1 && !is_singular() ) {
$paged_redirect['path'] = trailingslashit($paged_redirect['path']);
if ( $wp_rewrite->using_index_permalinks() && strpos($paged_redirect['path'], '/index.php/') === false )
$paged_redirect['path'] .= 'index.php/';
$paged_redirect['path'] .= user_trailingslashit("page/$paged", 'paged');
} elseif ( !is_home() && !is_singular() ){
$paged_redirect['path'] = user_trailingslashit($paged_redirect['path'], 'paged');
}
$redirect_url = $paged_redirect['scheme'] . '://' . $paged_redirect['host'] . $paged_redirect['path'];
$redirect['path'] = $paged_redirect['path'];
}
$redirect['query'] = remove_query_arg('paged', $redirect['query']);
}
}
// tack on any additional query vars
if ( $redirect_url && $redirect['query'] ) {
if ( strpos($redirect_url, '?') !== false )
$redirect_url .= '&';
else
$redirect_url .= '?';
$redirect_url .= $redirect['query'];
// tack on any additional query vars
if ( $redirect_url && $redirect['query'] ) {
if ( strpos($redirect_url, '?') !== false )
$redirect_url .= '&';
else
$redirect_url .= '?';
$redirect_url .= $redirect['query'];
}
if ( $redirect_url )
$redirect = @parse_url($redirect_url);
// www.example.com vs example.com
$user_home = @parse_url(get_option('home'));
$redirect['host'] = $user_home['host'];
// trailing /index.php or /index.php/
$redirect['path'] = preg_replace('|/index.php/?$|', '/', $redirect['path']);
// strip /index.php/ when we're not using PATHINFO permalinks
if ( !$wp_rewrite->using_index_permalinks() )
$redirect['path'] = str_replace('/index.php/', '/', $redirect['path']);
// trailing slashes
if ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() && !is_404() && (!is_home() || ( is_home() && (get_query_var('paged') > 1) ) ) ) {
$user_ts_type = '';
if ( get_query_var('paged') > 0 ) {
$user_ts_type = 'paged';
} else {
foreach ( array('single', 'category', 'page', 'day', 'month', 'year') as $type ) {
$func = 'is_' . $type;
if ( call_user_func($func) )
$user_ts_type = $type;
break;
}
}
$redirect['path'] = user_trailingslashit($redirect['path'], $user_ts_type);
}
if ( !$redirect_url ) { // we're only going down this road if we don't have a WP-generated link from above
// www.example.com vs example.com
$user_home = parse_url(get_option('home'));
$redirect['host'] = $user_home['host'];
// trailing /index.php or /index.php/
$redirect['path'] = preg_replace('|/index.php/?$|', '/', $redirect['path']);
// need to strip off the query string
if ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() && !is_404() && (!is_home() || ( is_home() && is_paged() ) ) )
$redirect['path'] = user_trailingslashit($redirect['path']);
if ( array($original['host'], $original['path'], $original['query']) !== array($redirect['host'], $redirect['path'], $redirect['query']) ) {
$redirect_url = $redirect['scheme'] . '://' . $redirect['host'] . $redirect['path'];
if ( $redirect['query'] )
$redirect_url .= '?' . $redirect['query'];
}
if ( array($original['host'], $original['path'], $original['query']) !== array($redirect['host'], $redirect['path'], $redirect['query']) ) {
$redirect_url = $redirect['scheme'] . '://' . $redirect['host'] . $redirect['path'];
if ( $redirect['query'] )
$redirect_url .= '?' . $redirect['query'];
}
if ( $redirect_url && $redirect_url != $requested_url ) {