functions.php

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    $notify_message  = "A new comment on the post #$comment->comment_post_ID \"".stripslashes($post->post_title)."\" is waiting for your approval\r\n\r\n";
    $notify_message .= "Author : $comment->comment_author (IP: $comment->comment_author_IP , $comment_author_domain)\r\n";
    $notify_message .= "E-mail : $comment->comment_author_email\r\n";
    $notify_message .= "URL    : $comment->comment_author_url\r\n";
    $notify_message .= "Whois  : http://ws.arin.net/cgi-bin/whois.pl?queryinput=$comment->comment_author_IP\r\n";
    $notify_message .= "Comment:\r\n".stripslashes($comment->comment_content)."\r\n\r\n";
    $notify_message .= "To approve this comment, visit: " . get_settings('siteurl') . "/wp-admin/post.php?action=mailapprovecomment&p=".$comment->comment_post_ID."&comment=$comment_id\r\n";
    $notify_message .= "To delete this comment, visit: " . get_settings('siteurl') . "/wp-admin/post.php?action=confirmdeletecomment&p=".$comment->comment_post_ID."&comment=$comment_id\r\n";
    $notify_message .= "Currently $comments_waiting comments are waiting for approval. Please visit the moderation panel:\r\n";
    $notify_message .= get_settings('siteurl') . "/wp-admin/moderation.php\r\n";

    $subject = '[' . stripslashes(get_settings('blogname')) . '] Please approve: "' .stripslashes($post->post_title).'"';
    $admin_email = get_settings("admin_email");
    $from  = "From: $admin_email";

    $message_headers = "MIME-Version: 1.0\r\n"
    	. "$from\r\n"
    	. "Content-Type: text/plain; charset=\"" . get_settings('blog_charset') . "\"\r\n";

    @mail($admin_email, $subject, $notify_message, $message_headers);
    
    return true;
}


function start_wp() {
	global $post, $id, $postdata, $authordata, $day, $preview, $page, $pages, $multipage, $more, $numpages;
	global $pagenow;
	if (!$preview) {
		$id = $post->ID;
	} else {
		$id = 0;
		$postdata = array (
			'ID' => 0,
			'Author_ID' => $_GET['preview_userid'],
			'Date' => $_GET['preview_date'],
			'Content' => $_GET['preview_content'],
			'Excerpt' => $_GET['preview_excerpt'],
			'Title' => $_GET['preview_title'],
			'Category' => $_GET['preview_category'],
			'Notify' => 1
			);
	}
	$authordata = get_userdata($post->post_author);

	$day = mysql2date('d.m.y', $post->post_date);
	$currentmonth = mysql2date('m', $post->post_date);
	$numpages = 1;
	if (!$page)
		$page = 1;
	if (isset($p))
		$more = 1;
	$content = $post->post_content;
	if (preg_match('/<!--nextpage-->/', $post->post_content)) {
		if ($page > 1)
			$more = 1;
		$multipage = 1;
		$content = stripslashes($post->post_content);
		$content = str_replace("\n<!--nextpage-->\n", '<!--nextpage-->', $content);
		$content = str_replace("\n<!--nextpage-->", '<!--nextpage-->', $content);
		$content = str_replace("<!--nextpage-->\n", '<!--nextpage-->', $content);
		$pages = explode('<!--nextpage-->', $content);
		$numpages = count($pages);
	} else {
		$pages[0] = stripslashes($post->post_content);
		$multipage = 0;
	}
	return true;
}

function is_new_day() {
	global $day, $previousday;
	if ($day != $previousday) {
		return(1);
	} else {
		return(0);
	}
}

// Filters: these are the core of WP's plugin architecture

function apply_filters($tag, $string) {
	global $wp_filter;
	if (isset($wp_filter['all'])) {
		foreach ($wp_filter['all'] as $priority => $functions) {
			if (isset($wp_filter[$tag][$priority]))
				$wp_filter[$tag][$priority] = array_merge($wp_filter['all'][$priority], $wp_filter[$tag][$priority]);
			else
				$wp_filter[$tag][$priority] = array_merge($wp_filter['all'][$priority], array());
			$wp_filter[$tag][$priority] = array_unique($wp_filter[$tag][$priority]);
		}

	}
	
	if (isset($wp_filter[$tag])) {
		ksort($wp_filter[$tag]);
		foreach ($wp_filter[$tag] as $priority => $functions) {
			foreach($functions as $function) {
					$string = $function($string);
			}
		}
	}
	return $string;
}

function add_filter($tag, $function_to_add, $priority = 10) {
	global $wp_filter;
	// So the format is wp_filter['tag']['array of priorities']['array of functions']
	if (!@in_array($function_to_add, $wp_filter[$tag]["$priority"])) {
		$wp_filter[$tag]["$priority"][] = $function_to_add;
	}
	return true;
}

function remove_filter($tag, $function_to_remove, $priority = 10) {
	global $wp_filter;
	if (@in_array($function_to_remove, $wp_filter[$tag]["$priority"])) {
		foreach ($wp_filter[$tag]["$priority"] as $function) {
			if ($function_to_remove != $function) {
				$new_function_list[] = $function;
			}
		}
		$wp_filter[$tag]["$priority"] = $new_function_list;
	}
	//die(var_dump($wp_filter));
	return true;
}

// The *_action functions are just aliases for the *_filter functions, they take special strings instead of generic content

function do_action($tag, $string) {
	return apply_filters($tag, $string);
}

function add_action($tag, $function_to_add, $priority = 10) {
	add_filter($tag, $function_to_add, $priority);
}

function remove_action($tag, $function_to_remove, $priority = 10) {
	remove_filter($tag, $function_to_remove, $priority);
}

/* rewrite_rules
 * Construct rewrite matches and queries from permalink structure.
 * matches - The name of the match array to use in the query strings.
 *           If empty, $1, $2, $3, etc. are used.
 * Returns an associate array of matches and queries.
 */
function rewrite_rules($matches = '', $permalink_structure = '') {

    function preg_index($number, $matches = '') {
        $match_prefix = '$';
        $match_suffix = '';
        
        if (! empty($matches)) {
            $match_prefix = '$' . $matches . '['; 
                                               $match_suffix = ']';
        }        
        
        return "$match_prefix$number$match_suffix";        
    }
    
    $rewrite = array();

    if (empty($permalink_structure)) {
        $permalink_structure = get_settings('permalink_structure');
        
        if (empty($permalink_structure)) {
            return $rewrite;
        }
    }

    $rewritecode = 
	array(
	'%year%',
	'%monthnum%',
	'%day%',
	'%hour%',
	'%minute%',
	'%second%',
	'%postname%',
	'%post_id%'
	);

    $rewritereplace = 
	array(
	'([0-9]{4})?',
	'([0-9]{1,2})?',
	'([0-9]{1,2})?',
	'([0-9]{1,2})?',
	'([0-9]{1,2})?',
	'([0-9]{1,2})?',
	'([_0-9a-z-]+)?',
	'([0-9]+)?'
	);

    $queryreplace = 
	array (
	'year=',
	'monthnum=',
	'day=',
	'hour=',
	'minute=',
	'second=',
	'name=',
	'p='
	);


    $match = str_replace('/', '/?', $permalink_structure);
    $match = preg_replace('|/[?]|', '', $match, 1);

    $match = str_replace($rewritecode, $rewritereplace, $match);
    $match = preg_replace('|[?]|', '', $match, 1);

    $feedmatch = trailingslashit(str_replace('?/?', '/', $match));
    $trackbackmatch = $feedmatch;

    preg_match_all('/%.+?%/', $permalink_structure, $tokens);

    $query = 'index.php?';
    $feedquery = 'wp-feed.php?';
    $trackbackquery = 'wp-trackback.php?';
    for ($i = 0; $i < count($tokens[0]); ++$i) {
             if (0 < $i) {
                 $query .= '&';
                 $feedquery .= '&';
                 $trackbackquery .= '&';
             }
             
             $query_token = str_replace($rewritecode, $queryreplace, $tokens[0][$i]) . preg_index($i+1, $matches);
             $query .= $query_token;
             $feedquery .= $query_token;
             $trackbackquery .= $query_token;
             }
    ++$i;

    // Add post paged stuff
    $match .= '([0-9]+)?/?$';
    $query .= '&page=' . preg_index($i, $matches);

    // Add post feed stuff
    $feedregex = '(feed|rdf|rss|rss2|atom)/?$';
    $feedmatch .= $feedregex;
    $feedquery .= '&feed=' . preg_index($i, $matches);

    // Add post trackback stuff
    $trackbackregex = 'trackback/?$';
    $trackbackmatch .= $trackbackregex;

    // Site feed
    $sitefeedmatch = 'feed/?([_0-9a-z-]+)?/?$';
    $sitefeedquery = 'wp-feed.php?feed=' . preg_index(1, $matches);

    // Site comment feed
    $sitecommentfeedmatch = 'comments/feed/?([_0-9a-z-]+)?/?$';
    $sitecommentfeedquery = 'wp-feed.php?feed=' . preg_index(1, $matches) . '&withcomments=1';

    // Code for nice categories and authors, currently not very flexible
    $front = substr($permalink_structure, 0, strpos($permalink_structure, '%'));
	if ( '' == get_settings('category_base') )
		$catmatch = $front . 'category/';
	else
	    $catmatch = get_settings('category_base') . '/';
    $catmatch = preg_replace('|^/+|', '', $catmatch);
    
    $catfeedmatch = $catmatch . '(.*)/' . $feedregex;
    $catfeedquery = 'wp-feed.php?category_name=' . preg_index(1, $matches) . '&feed=' . preg_index(2, $matches);

    $catmatch = $catmatch . '?(.*)';
    $catquery = 'index.php?category_name=' . preg_index(1, $matches);

    $authormatch = $front . 'author/';
    $authormatch = preg_replace('|^/+|', '', $authormatch);

    $authorfeedmatch = $authormatch . '(.*)/' . $feedregex;
    $authorfeedquery = 'wp-feed.php?author_name=' . preg_index(1, $matches) . '&feed=' . preg_index(2, $matches);

    $authormatch = $authormatch . '?(.*)';
    $authorquery = 'index.php?author_name=' . preg_index(1, $matches);

    $rewrite = array(
                     $catfeedmatch => $catfeedquery,
                     $catmatch => $catquery,
                     $authorfeedmatch => $authorfeedquery,
                     $authormatch => $authorquery,
                     $match => $query,
                     $feedmatch => $feedquery,
                     $trackbackmatch => $trackbackquery,
                     $sitefeedmatch => $sitefeedquery,
                     $sitecommentfeedmatch => $sitecommentfeedquery
                     );

    return $rewrite;
}

function get_posts($args) {
	global $wpdb, $tableposts;
	parse_str($args, $r);
	if (!isset($r['numberposts'])) $r['numberposts'] = 5;
	if (!isset($r['offset'])) $r['offset'] = 0;
	// The following not implemented yet
	if (!isset($r['category'])) $r['category'] = '';
	if (!isset($r['orderby'])) $r['orderby'] = '';
	if (!isset($r['order'])) $r['order'] = '';

	$now = current_time('mysql');

	$posts = $wpdb->get_results("SELECT DISTINCT * FROM $tableposts WHERE post_date <= '$now' AND (post_status = 'publish') GROUP BY $tableposts.ID ORDER BY post_date DESC LIMIT " . $r['offset'] . ',' . $r['numberposts']);
	
	return $posts;
}

function check_comment($author, $email, $url, $comment, $user_ip) {
	if (1 == get_settings('comment_moderation')) return false; // If moderation is set to manual

	if ( (count(explode('http:', $comment)) - 1) >= get_settings('comment_max_links') )
		return false; // Check # of external links

	if ('' == trim( get_settings('moderation_keys') ) ) return true; // If moderation keys are empty
	$words = explode("\n", get_settings('moderation_keys') );
	foreach ($words as $word) {
	$word = trim($word);
	$pattern = "#$word#i";
		if ( preg_match($pattern, $author) ) return false;
		if ( preg_match($pattern, $email) ) return false;
		if ( preg_match($pattern, $url) ) return false;
		if ( preg_match($pattern, $comment) ) return false;
		if ( preg_match($pattern, $user_ip) ) return false;
	}

	return true;
}

function wp_head() {
	do_action('wp_head', '');
}

?>