WordPress/wp-blog-header.php

<?php

$use_cache = 1; // No reason not to

/* Including config and functions files */
$curpath = dirname(__FILE__).'/';

if (!file_exists($curpath . '/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/install-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($curpath.'/wp-config.php');

/* Process PATH_INFO, if set. */
$path_info = array();
if (! empty($_SERVER['PATH_INFO'])) {
    // Fetch the rewrite rules.
    $rewrite = rewrite_rules('matches');

    $pathinfo = $_SERVER['PATH_INFO'];
    // Trim leading '/'.
    $pathinfo = preg_replace("!^/!", '', $pathinfo);

    if (! empty($rewrite)) {
        // Get the name of the file requesting path info.
        $req_uri = $HTTP_SERVER_VARS['REQUEST_URI'];
        $req_uri = str_replace($pathinfo, '', $req_uri);
        $req_uri = preg_replace("!/+$!", '', $req_uri);
        $req_uri = explode('/', $req_uri);
        $req_uri = $req_uri[count($req_uri)-1];

        // Look for matches.
        $pathinfomatch = $pathinfo;
        foreach ($rewrite as $match => $query) {
            // If the request URI is the anchor of the match, prepend it
            // to the path info.
            if ((! empty($req_uri)) && (strpos($match, $req_uri) === 0)) {
                $pathinfomatch = $req_uri . '/' . $pathinfo;
            }

            if (preg_match("!^$match!", $pathinfomatch, $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, $path_info);
            }
        }
    }    
}

$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', 'name', 'category_name', 'feed', 'author_name');

    for ($i=0; $i<count($wpvarstoreset); $i += 1) {
        $wpvar = $wpvarstoreset[$i];
        if (!isset($$wpvar)) {
            if (empty($HTTP_POST_VARS[$wpvar])) {
                if (empty($HTTP_GET_VARS[$wpvar]) && empty($path_info[$wpvar])) {
                    $$wpvar = '';
                } elseif (!empty($HTTP_GET_VARS[$wpvar])) {
                    $$wpvar = $HTTP_GET_VARS[$wpvar];
                } else {
                    $$wpvar = $path_info[$wpvar];
                }
            } else {
                $$wpvar = $HTTP_POST_VARS[$wpvar];
            }
        }
    }


/* Sending HTTP headers */

if (!isset($doing_rss) || !$doing_rss) {
	// It is presumptious to think that WP is the only thing that might change on the page.
	@header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");                 // Date in the past
	@header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
	@header("Cache-Control: no-store, no-cache, must-revalidate");     // HTTP/1.1
	@header("Cache-Control: post-check=0, pre-check=0", false);
	@header("Pragma: no-cache");                                     // HTTP/1.0
	@header ('X-Pingback: '. get_settings('siteurl') . '/xmlrpc.php');
} else {

	// We're showing a feed, so WP is indeed the only thing that last changed
	$last_modified_date = mysql2date("D, d M Y H:i:s", get_lastpostmodified('GMT')).' GMT';
	@header('Last Modified: '.$last_modified_date);
	@header('ETag: "'.md5($last_modified_date).'"');
	@header ('X-Pingback: ' . get_settings('siteurl') . '/xmlrpc.php');

	// Checking If-Modified-Since and If-None-Match,
	// works only on Apache but should fail gracefully elsewhere
	$request_headers = getallheaders();

	if ( !empty($request_headers['If-Modified-Since']) OR !empty($request_headers['If-None-Match']) ) {

	  $_match_ifmodifiedsince = 0;
	  $_match_ifnonematch = 0;

	  if (!empty($request_headers['If-Modified-Since'])) {
	    if (strtotime($request_headers['If-Modified-Since']) <= strtotime($last_modified_date)) {
	      $_match_ifmodifiedsince = 1;
	    } else {
	      $_match_ifmodifiedsince = -1;
	    }
	  }
	  if (!empty($request_headers['If-None-Match'])) {
	    if ($request_headers['If-None-Match'] == md5($last_modified_date)) {
	      $_match_ifnonematch = 1;
	    } else {
	      $_match_ifnonematch = -1;
	    }
	  }

	  // if one element is present but doesn't match the header, the -1 makes this <=0
	  if ($_match_ifmodifiedsince + $_match_ifnonematch) {
	    header("HTTP/1.1 304 Not Modified\n\n");
	  }
	}
}

/* Getting settings from db */
if (isset($doing_rss) && $doing_rss == 1)
    $posts_per_page=get_settings('posts_per_rss');
if (!isset($posts_per_page) || $posts_per_page == 0)
    $posts_per_page = get_settings('posts_per_page');
$what_to_show = get_settings('what_to_show');
$archive_mode = get_settings('archive_mode');
$time_difference = get_settings('time_difference');
$use_gzipcompression = get_settings('gzipcompression');

/* First let's clear some variables */
$whichcat = '';
$whichauthor = '';
$result = '';
$where = '';
$limits = '';
$distinct = '';
$join = '';

if ($pagenow != 'post.php') { timer_start(); }

if (isset($showposts) && $showposts) {
    $showposts = (int)$showposts;
    $posts_per_page = $showposts;
}

$add_hours = intval($time_difference);
$add_minutes = intval(60 * ($time_difference - $add_hours));
$wp_posts_post_date_field = "post_date"; // "DATE_ADD(post_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)";

// if a month is specified in the querystring, load that month
if ($m != '') {
    $m = ''.intval($m);
    $where .= ' AND YEAR(post_date)='.substr($m,0,4);
    if (strlen($m)>5)
        $where .= ' AND MONTH(post_date)='.substr($m,4,2);
    if (strlen($m)>7)
        $where .= ' AND DAYOFMONTH(post_date)='.substr($m,6,2);
    if (strlen($m)>9)
        $where .= ' AND HOUR(post_date.)='.substr($m,8,2);
    if (strlen($m)>11)
        $where .= ' AND MINUTE(post_date)='.substr($m,10,2);
    if (strlen($m)>13)
        $where .= ' AND SECOND(post_date)='.substr($m,12,2);

}

if ($year != '') {
    $year = '' . intval($year);
    $where .= " AND YEAR(post_date)='$year'";
}

if ($monthnum != '') {
    $monthnum = '' . intval($monthnum);
    $where .= " AND MONTH(post_date)='$monthnum'";
}

if ($day != '') {
    $day = '' . intval($day);
    $where .= " AND DAYOFMONTH(post_date)='$day'";
}

if ($name != '') {
    $name = preg_replace('/[^a-z0-9-]/', '', $name);
    $where .= " AND post_name = '$name'";
}

if ($w != '') {
    $w = ''.intval($w);
    $where .= " AND WEEK(post_date, 1)='$w'";
}

// if a post number is specified, load that post
if (($p != '') && ($p != 'all')) {
    $p = intval($p);
    $where = ' AND ID = '.$p;
}

// if a search pattern is specified, load the posts that match
if (!empty($s)) {
    $s = addslashes_gpc($s);
    $search = ' AND (';
    // puts spaces instead of commas
    $s = preg_replace('/, +/', '', $s);
    $s = str_replace(',', ' ', $s);
    $s = str_replace('"', ' ', $s);
    $s = trim($s);
    if ($exact) {
        $n = '';
    } else {
        $n = '%';
    }
    if (!$sentence) {
        $s_array = explode(' ',$s);
        $search .= '((post_title LIKE \''.$n.$s_array[0].$n.'\') OR (post_content LIKE \''.$n.$s_array[0].$n.'\'))';
        for ( $i = 1; $i < count($s_array); $i = $i + 1) {
            $search .= ' AND ((post_title LIKE \''.$n.$s_array[$i].$n.'\') OR (post_content LIKE \''.$n.$s_array[$i].$n.'\'))';
        }
        $search .= ' OR (post_title LIKE \''.$n.$s.$n.'\') OR (post_content LIKE \''.$n.$s.$n.'\')';
        $search .= ')';
    } else {
        $search = ' AND ((post_title LIKE \''.$n.$s.$n.'\') OR (post_content LIKE \''.$n.$s.$n.'\'))';
    }
}

// category stuff
$dogs = $wpdb->get_results("SELECT * FROM $tablecategories WHERE 1=1");
foreach ($dogs as $catt) {
    $cache_categories[$catt->cat_ID] = $catt;
}

if ((empty($cat)) || ($cat == 'all') || ($cat == '0') || 
	// Bypass cat checks if fetching specific posts
	(
		intval($year) || intval($monthnum) || intval($day) || intval($w) ||
		intval($p) || !empty($name) || !empty($s)
	)
		) {
    $whichcat='';
} else {
    $cat = ''.urldecode($cat).'';
    $cat = addslashes_gpc($cat);
    if (stristr($cat,'-')) {
        // Note: if we have a negative, we ignore all the positives. It must
        // always mean 'everything /except/ this one'. We should be able to do
        // multiple negatives but we don't :-(
        $eq = '!=';
        $andor = 'AND';
        $cat = explode('-',$cat);
        $cat = intval($cat[1]);
    } else {
        $eq = '=';
        $andor = 'OR';
    }
    $join = " LEFT JOIN $tablepost2cat ON ($tableposts.ID = $tablepost2cat.post_id) ";
    $cat_array = explode(' ',$cat);
    $whichcat .= ' AND (category_id '.$eq.' '.intval($cat_array[0]);
    $whichcat .= get_category_children($cat_array[0], ' '.$andor.' category_id '.$eq.' ');
    for ($i = 1; $i < (count($cat_array)); $i = $i + 1) {
            $whichcat .= ' '.$andor.' category_id '.$eq.' '.intval($cat_array[$i]);
        $whichcat .= get_category_children($cat_array[$i], ' '.$andor.' category_id '.$eq.' ');
    }
    $whichcat .= ')';
    if ($eq == '!=') {
        $cat = '-'.$cat; //put back the knowledge that we are excluding a category.
    }
}

// Category stuff for nice URIs

if ('' != $category_name) {
    if (stristr($category_name,'/')) {
        $category_name = explode('/',$category_name);
        if ($category_name[count($category_name)-1]) {
        $category_name = $category_name[count($category_name)-1];#no trailing slash
        } else {
        $category_name = $category_name[count($category_name)-2];#there was a trailling slash
        }
    }
    $category_name = preg_replace('|[^a-z0-9-]|', '', $category_name);
    $tables = ", $tablepost2cat, $tablecategories";
    $join = " LEFT JOIN $tablepost2cat ON ($tableposts.ID = $tablepost2cat.post_id) LEFT JOIN $tablecategories ON ($tablepost2cat.category_id = $tablecategories.cat_ID) ";
    $whichcat = " AND (category_nicename = '$category_name'";
    $cat = $wpdb->get_var("SELECT cat_ID FROM $tablecategories WHERE category_nicename = '$category_name'");
    $whichcat .= get_category_children($cat, " OR category_id = ");
    $whichcat .= ")";
}

// author stuff
$auteurs = $wpdb->get_results("SELECT * FROM $tableusers WHERE 1=1");
foreach ($auteurs as $auteur) {
    $cache_authors[$auteur->ID] = $auteur;
}

if ((empty($author)) || ($author == 'all') || ($author == '0')) {
    $whichauthor='';
} else {
    $author = ''.urldecode($author).'';
    $author = addslashes_gpc($author);
    if (stristr($author, '-')) {
        $eq = '!=';
        $andor = 'AND';
        $author = explode('-', $author);
        $author = ''.intval($author[1]);
    } else {
        $eq = '=';
        $andor = 'OR';
    }
    $author_array = explode(' ', $author);
    $whichauthor .= ' AND (post_author '.$eq.' '.intval($author_array[0]);
    for ($i = 1; $i < (count($author_array)); $i = $i + 1) {
        $whichauthor .= ' '.$andor.' post_author '.$eq.' '.intval($author_array[$i]);
    }
    $whichauthor .= ')';
}

// Author stuff for nice URIs

if ('' != $author_name) {
    if (stristr($author_name,'/')) {
        $author_name = explode('/',$author_name);
        if ($author_name[count($author_name)-1]) {
        $author_name = $author_name[count($author_name)-1];#no trailing slash
        } else {
        $author_name = $author_name[count($author_name)-2];#there was a trailling slash
        }
    }
    $author_name = preg_replace('|[^a-z0-9-]|', '', strtolower($author_name));
    $author = $wpdb->get_var("SELECT ID FROM $tableusers WHERE user_nicename='".$author_name."'");
    $whichauthor .= ' AND (post_author = '.intval($author).')';
}

$where .= $search.$whichcat.$whichauthor;

if ((empty($order)) || ((strtoupper($order) != 'ASC') && (strtoupper($order) != 'DESC'))) {
    $order='DESC';
}

// order by stuff
if (empty($orderby)) {
    $orderby='date '.$order;
} else {
    // used to filter values
    $allowed_keys = array('author','date','category','title');
    $orderby = urldecode($orderby);
    $orderby = addslashes_gpc($orderby);
    $orderby_array = explode(' ',$orderby);
    if (!in_array($orderby_array[0],$allowed_keys)) {
        $orderby_array[0] = 'date';
    }
    $orderby = $orderby_array[0].' '.$order;
    if (count($orderby_array)>1) {
        for ($i = 1; $i < (count($orderby_array)); $i = $i + 1) {
            // Only allow certain values for safety
            if (in_array($orderby_array[$i],$allowed_keys)) {
                $orderby .= ',post_'.$orderby_array[$i].' '.$order;
            }
        }
    }
}

if ((!$whichcat) && (!$m) && (!$p) && (!$w) && (!$s) && empty($poststart) && empty($postend)) {
    if ($what_to_show == 'posts') {
        $limits = ' LIMIT '.$posts_per_page;
    } elseif ($what_to_show == 'days' && empty($monthnum) && empty($year) && empty($day)) {
        $lastpostdate = get_lastpostdate();
        $lastpostdate = mysql2date('Y-m-d 00:00:00',$lastpostdate);
        $lastpostdate = mysql2date('U',$lastpostdate);
        $otherdate = date('Y-m-d H:i:s', ($lastpostdate - (($posts_per_page-1) * 86400)));
        $where .= " AND post_date > '$otherdate'";
    }
}

if ( !empty($postend) && ($postend > $poststart) && (!$m) && empty($monthnum) && empty($year) && empty($day) &&(!$w) && (!$whichcat) && (!$s) && (!$p)) {
    if ($what_to_show == 'posts' || ($what_to_show == 'paged' && (!$paged))) {
        $poststart = intval($poststart);
        $postend = intval($postend);
        $limposts = $postend - $poststart;
        $limits = ' LIMIT '.$poststart.','.$limposts;
    } elseif ($what_to_show == 'days') {
        $poststart = intval($poststart);
        $postend = intval($postend);
        $limposts = $postend - $poststart;
        $lastpostdate = get_lastpostdate();
        $lastpostdate = mysql2date('Y-m-d 00:00:00',$lastpostdate);
        $lastpostdate = mysql2date('U',$lastpostdate);
        $startdate = date('Y-m-d H:i:s', ($lastpostdate - (($poststart -1) * 86400)));
        $otherdate = date('Y-m-d H:i:s', ($lastpostdate - (($postend -1) * 86400)));
        $where .= " AND post_date > '$otherdate' AND post_date < '$startdate'";
    }
} else {
    if (($what_to_show == 'paged') && (!$p) && (!$more)) {
        if ($pagenow != 'post.php') {
            $pgstrt = '';
            if ($paged) {
                $pgstrt = (intval($paged) -1) * $posts_per_page . ', ';
            }
            $limits = 'LIMIT '.$pgstrt.$posts_per_page;
        } else {
            if (($m) || ($p) || ($w) || ($s) || ($whichcat)) {
                $limits = '';
            } else {
                $pgstrt = '';
                if ($paged) {
                    $pgstrt = (intval($paged) -1) * $posts_per_page . ', ';
                }
                $limits = 'LIMIT '.$pgstrt.$posts_per_page;
            }
        }
    }
    elseif (($m) || ($p) || ($w) || ($s) || ($whichcat) || ($author) || $monthnum || $year || $day) {
        $limits = '';
    }
}

if ($p == 'all') {
    $where = '';
}

$now = gmdate('Y-m-d H:i:59', time() + ($time_difference * 3600));

if ($pagenow != 'post.php' && $pagenow != 'edit.php') {
    if ((empty($poststart)) || (empty($postend)) || !($postend > $poststart)) {
        $where .= " AND post_date <= '$now'";
    }

    $distinct = 'DISTINCT';

    if ($use_gzipcompression) {
        // gzipping the output of the script
        gzip_compression();
    }
}
$where .= ' AND (post_status = "publish"';

// Get private posts
if (isset($user_ID) && ('' != intval($user_ID)))
    $where .= " OR post_author = $user_ID AND post_status != 'draft')";
else
    $where .= ')';
$where .= " GROUP BY $tableposts.ID";
$request = " SELECT $distinct * FROM $tableposts $join WHERE 1=1".$where." ORDER BY post_$orderby $limits";


if ($preview) {
    $request = 'SELECT 1-1'; // dummy mysql query for the preview
    // little funky fix for IEwin, rawk on that code
    $is_winIE = ((preg_match('/MSIE/',$HTTP_USER_AGENT)) && (preg_match('/Win/',$HTTP_USER_AGENT)));
    if (($is_winIE) && (!isset($IEWin_bookmarklet_fix))) {
        $preview_content =  preg_replace('/\%u([0-9A-F]{4,4})/e',  "'&#'.base_convert('\\1',16,10).';'", $preview_content);
    }
}

// error_log("$request");
// echo $request;
$posts = $wpdb->get_results($request);

// No point in doing all this work if we didn't match any posts.
if ($posts) {
    // Get the categories for all the posts
    foreach ($posts as $post) {
        $post_id_list[] = $post->ID;
    }
    $post_id_list = implode(',', $post_id_list);

    $dogs = $wpdb->get_results("SELECT DISTINCT
        ID, category_id, cat_name, category_nicename, category_description, category_parent
        FROM $tablecategories, $tablepost2cat, $tableposts
        WHERE category_id = cat_ID AND post_id = ID AND post_id IN ($post_id_list)");
        
    foreach ($dogs as $catt) {
        $category_cache[$catt->ID][] = $catt;
    }

    // Do the same for comment numbers
    $comment_counts = $wpdb->get_results("SELECT ID, COUNT( comment_ID ) AS ccount
        FROM $tableposts
        LEFT JOIN $tablecomments ON ( comment_post_ID = ID  AND comment_approved =  '1')
        WHERE post_status =  'publish' AND ID IN ($post_id_list)
        GROUP BY ID");
    
	if ($comment_counts) {
	    foreach ($comment_counts as $comment_count) {
	        $comment_count_cache["$comment_count->ID"] = $comment_count->ccount;
	    }
	}

	// Get post-meta info
	if ( $meta_list = $wpdb->get_results("
			SELECT post_id,meta_key,meta_value 
			FROM $tablepostmeta 
			WHERE post_id IN($post_id_list)
			ORDER BY post_id,meta_key
		", ARRAY_A) ) {
		
		// Change from flat structure to hierarchical:
		$post_meta_cache = array();
		foreach ($meta_list as $metarow) {
			$mpid = $metarow['post_id'];
			$mkey = $metarow['meta_key'];
			$mval = $metarow['meta_value'];
			
			// Force subkeys to be array type:
			if (!is_array($post_meta_cache[$mpid]))
				$post_meta_cache[$mpid] = array();
			if (!is_array($post_meta_cache[$mpid][$mkey]))
				$post_meta_cache[$mpid][$mkey] = array();
			
			// Add a value to the current pid/key:
			$post_meta_cache[$mpid][$mkey][] = $mval;
		}
	}


    if (1 == count($posts)) {
        if ($p || $name) {
            $more = 1;
            $single = 1;
        }
        if ($s && empty($paged)) { // If they were doing a search and got one result
            header('Location: ' . get_permalink($posts[0]->ID));
        }
    }
} // end if posts.
?>