WordPress/wp-blog-header.php

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PHP
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<?php
if (! isset($wp_did_header)):
if ( !file_exists( dirname(__FILE__) . '/wp-config.php') )
die("There doesn't seem to be a <code>wp-config.php</code> file. I need this before we can get started. Need more help? <a href='http://wordpress.org/docs/faq/#wp-config'>We got it</a>. You can <a href='wp-admin/setup-config.php'>create a <code>wp-config.php</code> file through a web interface</a>, but this doesn't work for all server setups. The safest way is to manually create the file.");
require_once( dirname(__FILE__) . '/wp-config.php');
require_once( dirname(__FILE__) . '/wp-includes/wp-l10n.php');
$query_vars = array();
// Process PATH_INFO and 404.
if ((isset($_GET['error']) && $_GET['error'] == '404') ||
(! empty( $_SERVER['PATH_INFO']) && '/' != $_SERVER['PATH_INFO'])) {
// If we match a rewrite rule, this will be cleared.
$error = '404';
// Fetch the rewrite rules.
$rewrite = rewrite_rules('matches');
if (! empty($rewrite)) {
$pathinfo = $_SERVER['PATH_INFO'];
$req_uri = $_SERVER['REQUEST_URI'];
$home_path = parse_url(get_settings('home'));
$home_path = $home_path['path'];
// Trim path info from the end and the leading home path from the
// front. For path info requests, this leaves us with the requesting
// filename, if any. For 404 requests, this leaves us with the
// requested permalink.
$req_uri = str_replace($pathinfo, '', $req_uri);
$req_uri = str_replace($home_path, '', $req_uri);
$req_uri = trim($req_uri, '/');
$pathinfo = trim($pathinfo, '/');
// The requested permalink is in $pathinfo for path info requests and
// $req_uri for other requests.
if (! empty($pathinfo)) {
$request = $pathinfo;
} else {
$request = $req_uri;
}
// Look for matches.
$request_match = $request;
foreach ($rewrite as $match => $query) {
// If the requesting file is the anchor of the match, prepend it
// to the path info.
if ((! empty($req_uri)) && (strpos($match, $req_uri) === 0)) {
$request_match = $req_uri . '/' . $request;
}
if (preg_match("!^$match!", $request_match, $matches)) {
// Got a match.
// Trim the query of everything up to the '?'.
$query = preg_replace("!^.+\?!", '', $query);
// Substitute the substring matches into the query.
eval("\$query = \"$query\";");
// Parse the query.
parse_str($query, $query_vars);
// If we're processing a 404 request, clear the error var
// since we found something.
if (isset($_GET['error'])) {
unset($_GET['error']);
}
if (isset($error)) {
unset($error);
}
break;
}
}
}
}
$wpvarstoreset = array('m','p','posts','w', 'cat','withcomments','s','search','exact', 'sentence','poststart','postend','preview','debug', 'calendar','page','paged','more','tb', 'pb','author','order','orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second', 'name', 'category_name', 'feed', 'author_name', 'static', 'pagename', 'page_id', 'error');
for ($i=0; $i<count($wpvarstoreset); $i += 1) {
$wpvar = $wpvarstoreset[$i];
if (!isset($$wpvar)) {
if (empty($_POST[$wpvar])) {
if (empty($_GET[$wpvar]) && empty($query_vars[$wpvar])) {
$$wpvar = '';
} elseif (!empty($_GET[$wpvar])) {
$$wpvar = $_GET[$wpvar];
} else {
$$wpvar = $query_vars[$wpvar];
}
} else {
$$wpvar = $_POST[$wpvar];
}
}
}
if ('' != $feed) {
$doing_rss = true;
}
if (1 == $tb) {
$doing_trackback = true;
}
// Sending HTTP headers
if (is_404()) {
header("HTTP/1.x 404 Not Found");
} else if ( !isset($doing_rss) || !$doing_rss ) {
@header ('X-Pingback: '. get_bloginfo('pingback_url'));
} else {
// We're showing a feed, so WP is indeed the only thing that last changed
if ( $withcomments )
$wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastcommentmodified('GMT'), 0).' GMT';
else
$wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
$wp_etag = '"' . md5($wp_last_modified) . '"';
@header("Last-Modified: $wp_last_modified");
@header("ETag: $wp_etag");
@header ('X-Pingback: ' . get_bloginfo('pingback_url'));
// Support for Conditional GET
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) $client_last_modified = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
else $client_last_modified = false;
if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
else $client_etag = false;
if ( ($client_last_modified && $client_etag) ?
(($client_last_modified == $wp_last_modified) && ($client_etag == $wp_etag)) :
(($client_last_modified == $wp_last_modified) || ($client_etag == $wp_etag)) ) {
if ( preg_match('/cgi/',php_sapi_name()) ) {
header('HTTP/1.1 304 Not Modified');
echo "\r\n\r\n";
exit;
} else {
if (version_compare(phpversion(),'4.3.0','>=')) {
header('Not Modified', TRUE, 304);
} else {
header('HTTP/1.x 304 Not Modified');
}
exit;
}
}
}
// Getting settings from DB
if ( isset($doing_rss) && $doing_rss == 1 )
$posts_per_page = get_settings('posts_per_rss');
$use_gzipcompression = get_settings('gzipcompression');
$more_wpvars = array('posts_per_page', 'posts_per_archive_page', 'what_to_show', 'showposts', 'nopaging');
// Construct the query string.
$query_string = '';
foreach (array_merge($wpvarstoreset, $more_wpvars) as $wpvar) {
if ($$wpvar != '') {
$query_string .= (strlen($query_string) < 1) ? '' : '&';
$query_string .= $wpvar . '=' . rawurlencode($$wpvar);
}
}
$query_string = apply_filters('query_string', $query_string);
update_category_cache();
// Call query posts to do the work.
$posts = query_posts($query_string);
// Extract updated query vars back into global namespace.
extract($wp_query->query_vars);
if (1 == count($posts)) {
if (is_single()) {
$more = 1;
$single = 1;
}
if ( $s && empty($paged) && !strstr($_SERVER['PHP_SELF'], 'wp-admin/')) { // If they were doing a search and got one result
header('Location: ' . get_permalink($posts[0]->ID));
}
}
// Issue a 404 if a permalink request doesn't match any posts. Don't issue a
// 404 if one was already issued, if the request was a search, or if the
// request was a regular query string request rather than a permalink request.
if ( (0 == count($posts)) && !is_404() && !is_search()
&& !empty($_SERVER['QUERY_STRING']) &&
(false === strpos($_SERVER['REQUEST_URI'], '?')) ) {
$wp_query->is_404 = true;
header("HTTP/1.x 404 Not Found");
}
$wp_did_header = true;
endif;
$wp_template_dir = get_template_directory();
// Template redirection
if ($pagenow == 'index.php') {
if (! isset($wp_did_template_redirect)) {
if (is_feed()) {
$wp_did_template_redirect = true;
include(dirname(__FILE__) . '/wp-feed.php');
exit;
} else if ($tb == 1) {
$wp_did_template_redirect = true;
include(dirname(__FILE__) . '/wp-trackback.php');
exit;
} else if (is_404() &&
file_exists("$wp_template_dir/404.php")) {
$wp_did_template_redirect = true;
include("$wp_template_dir/404.php");
exit;
} else if (is_home() &&
file_exists("$wp_template_dir/index.php")) {
$wp_did_template_redirect = true;
include("$wp_template_dir/index.php");
exit;
} else if (is_single() &&
file_exists("$wp_template_dir/single.php")) {
$wp_did_template_redirect = true;
include("$wp_template_dir/single.php");
exit;
} else if (is_page() && file_exists(get_page_template())) {
$wp_did_template_redirect = true;
include(get_page_template());
exit;
} else if (is_category() &&
file_exists("$wp_template_dir/category.php")) {
$wp_did_template_redirect = true;
include("$wp_template_dir/category.php");
exit;
} else if (is_author() &&
file_exists("$wp_template_dir/author.php")) {
$wp_did_template_redirect = true;
include("$wp_template_dir/author.php");
exit;
} else if (is_date() &&
file_exists("$wp_template_dir/date.php")) {
$wp_did_date = true;
$wp_did_template_redirect = true;
include("$wp_template_dir/date.php");
exit;
} else if (is_archive() &&
file_exists("$wp_template_dir/archive.php")) {
$wp_did_template_redirect = true;
include("$wp_template_dir/archive.php");
exit;
} else if (is_search() &&
file_exists("$wp_template_dir/search.php")) {
$wp_did_template_redirect = true;
include("$wp_template_dir/search.php");
exit;
} else if (file_exists("$wp_template_dir/index.php"))
{
$wp_did_template_redirect = true;
include("$wp_template_dir/index.php");
exit;
}
}
}
if ($pagenow != 'post.php' && $pagenow != 'edit.php') {
if ( get_settings('gzipcompression') )
gzip_compression();
}
?>