<?php

set_time_limit(0);

define ( 'BUILD_ID', 1000 );

define ( 'EOL', "<br />\r\n");

define ( 'REGISTER_CLOSED',  0);
define ( 'REGISTER_APPROVE', 1);
define ( 'REGISTER_OPEN',    2);

define ( 'DIRECTION_NONE', 0);
define ( 'DIRECTION_IN',   1);
define ( 'DIRECTION_OUT',  2);
define ( 'DIRECTION_BOTH', 3);

define ( 'NOTIFY_INTRO',   0x0001 );
define ( 'NOTIFY_CONFIRM', 0x0002 );
define ( 'NOTIFY_WALL',    0x0004 );
define ( 'NOTIFY_COMMENT', 0x0008 );
define ( 'NOTIFY_MAIL',    0x0010 );

define ( 'NAMESPACE_DFRN' , 'http://purl.org/macgirvin/dfrn/1.0' ); 

/**
 * log levels
 */

define ( 'LOGGER_NORMAL',          0 );
define ( 'LOGGER_TRACE',           1 );
define ( 'LOGGER_DEBUG',           2 );
define ( 'LOGGER_DATA',            3 );
define ( 'LOGGER_ALL',             4 );


if(! class_exists('App')) {
class App {

	public  $module_loaded = false;
	public  $query_string;
	public  $config;
	public  $page;
	public  $profile;
	public  $user;
	public  $cid;
	public  $contact;
	public  $content;
	public  $data;
	public  $error = false;
	public  $cmd;
	public  $argv;
	public  $argc;
	public  $module;
	public  $pager;
	public  $strings;   
	public  $path;

	private $scheme;
	private $hostname;
	private $baseurl;
	private $db;

	function __construct() {

		$this->config = array();
		$this->page = array();
		$this->pager= array();

		$this->scheme = ((isset($_SERVER['HTTPS']) 
				&& ($_SERVER['HTTPS']))	?  'https' : 'http' );
		$this->hostname = str_replace('www.','',
				$_SERVER['SERVER_NAME']);
		set_include_path("include/$this->hostname" 
				. PATH_SEPARATOR . 'include' 
				. PATH_SEPARATOR . '.' );

                if(substr($_SERVER['QUERY_STRING'],0,2) == "q=")
			$_SERVER['QUERY_STRING'] = substr($_SERVER['QUERY_STRING'],2);

		$this->query_string = $_SERVER['QUERY_STRING'];

		$this->cmd = trim($_GET['q'],'/');


		$this->argv = explode('/',$this->cmd);
		$this->argc = count($this->argv);
		if((array_key_exists('0',$this->argv)) && strlen($this->argv[0])) {
			$this->module = $this->argv[0];
		}
		else {
			$this->module = 'directory';
		}

		$this->pager['page'] = ((x($_GET,'page')) ? $_GET['page'] : 1);
		$this->pager['itemspage'] = 50;
		$this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
		$this->pager['total'] = 0;
	}

	function get_baseurl($ssl = false) {
		if(strlen($this->baseurl))
			return $this->baseurl;

		$this->baseurl = (($ssl) ? 'https' : $this->scheme) . "://" . $this->hostname
			. ((isset($this->path) && strlen($this->path)) 
			? '/' . $this->path : '' );
		return $this->baseurl;
	}

	function set_baseurl($url) {
		$this->baseurl = $url;
		$this->hostname = basename($url);
	}

	function get_hostname() {
		return $this->hostname;
	}

	function set_hostname($h) {
		$this->hostname = $h;
	}

	function set_path($p) {
		$this->path = ltrim(trim($p),'/');
	} 

	function get_path() {
		return $this->path;
	}

	function set_pager_total($n) {
		$this->pager['total'] = intval($n);
	}

	function set_pager_itemspage($n) {
		$this->pager['itemspage'] = intval($n);
		$this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];

	} 

	function init_pagehead() {
		if(file_exists("view/head.tpl"))
			$s = file_get_contents("view/head.tpl");
		$this->page['htmlhead'] = replace_macros($s,array(
			'$baseurl' => $this->get_baseurl()
		));
	}

}}


if(! function_exists('x')) {
function x($s,$k = NULL) {
	if($k != NULL) {
		if((is_array($s)) && (array_key_exists($k,$s))) {
			if($s[$k])
				return (int) 1;
			return (int) 0;
		}
		return false;
	}
	else {		
		if(isset($s)) {
			if($s) {
				return (int) 1;
			}
			return (int) 0;
		}
		return false;
	}
}}

if(! function_exists('system_unavailable')) {
function system_unavailable() {
	include('system_unavailable.php');
	killme();
}}

if(! function_exists('logger')) {
function logger($msg,$level = 0) {
	$debugging = 1;
	$loglevel  = LOGGER_ALL;
	$logfile   = 'logfile.out';

	if((! $debugging) || (! $logfile) || ($level > $loglevel))
		return;
	require_once('include/datetime.php');

	@file_put_contents($logfile, datetime_convert() . ':' . ' ' . $msg . "\n", FILE_APPEND);
	return;
}}


if(! function_exists('replace_macros')) {  
function replace_macros($s,$r) {

	$search = array();
	$replace = array();

	if(is_array($r) && count($r)) {
		foreach ($r as $k => $v ) {
			$search[] =  $k;
			$replace[] = $v;
		}
	}
	return str_replace($search,$replace,$s);
}}


if(! function_exists('load_translation_table')) {
function load_translation_table($lang) {
	global $a;

}}

if(! function_exists('t')) {
function t($s) {
	global $a;

	if($a->strings[$s])
		return $a->strings[$s];
	return $s;
}}


if(! function_exists('fetch_url')) {
function fetch_url($url,$binary = false) {
	$ch = curl_init($url);
	if(! $ch) return false;

        curl_setopt($ch, CURLOPT_HEADER, 0);
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION,true);
	curl_setopt($ch, CURLOPT_MAXREDIRS,8);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
	if($binary)
		curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	$s = curl_exec($ch);
	curl_close($ch);
	return($s);
}}


if(! function_exists('post_url')) {
function post_url($url,$params) {
	$ch = curl_init($url);
	if(! $ch) return false;

        curl_setopt($ch, CURLOPT_HEADER, 0);
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION,true);
	curl_setopt($ch, CURLOPT_MAXREDIRS,8);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
	curl_setopt($ch, CURLOPT_POST,1);
	curl_setopt($ch, CURLOPT_POSTFIELDS,$params);
	$s = curl_exec($ch);
	curl_close($ch);
	return($s);
}}


if(! function_exists('random_string')) {
function random_string() {
	return(hash('sha256',uniqid(rand(),true)));
}}

if(! function_exists('notags')) {
function notags($string) {
	// protect against :<> with high-bit set
	return(str_replace(array("<",">","\xBA","\xBC","\xBE"), array('[',']','','',''), $string));
}}

if(! function_exists('escape_tags')) {
function escape_tags($string) {

	return(htmlspecialchars($string));
}}

if(! function_exists('login')) {
function login($register = false) {
	$o = "";
	$register_html = (($register) ? file_get_contents("view/register-link.tpl") : "");


	if(x($_SESSION,'authenticated')) {
		$o = file_get_contents("view/logout.tpl");
	}
	else {
		$o = file_get_contents("view/login.tpl");

		$o = replace_macros($o,array('$register_html' => $register_html ));
	}
	return $o;
}}


if(! function_exists('killme')) {
function killme() {
	session_write_close();
	closedb();
	exit;
}}

if(! function_exists('goaway')) {
function goaway($s) {
	header("Location: $s");
	killme();
}}

if(! function_exists('local_user')) {
function local_user() {
	if((x($_SESSION,'authenticated')) && (x($_SESSION,'uid')))
		return $_SESSION['uid'];
	return false;
}}

if(! function_exists('notice')) {
function notice($s) {

	$_SESSION['sysmsg'] .= $s;

}}

if(! function_exists('hex2bin')) {
function hex2bin($s) {
	return(pack("H*",$s));
}}


if(! function_exists('paginate')) {
function paginate(&$a) {
	$o = '';
	$stripped = ereg_replace("(&page=[0-9]*)","",$a->query_string);
	$stripped = str_replace('q=','',$stripped);
	$stripped = trim($stripped,'/');
	$pagenum = $a->pager['page'];
	$url = $a->get_baseurl() . '/' . $stripped ;


	  if($a->pager['total'] > $a->pager['itemspage']) {
		$o .= '<div class="pager">';
    		if($a->pager['page'] != 1)
			$o .= '<span class="pager_prev">'."<a href=\"$url".'&page='.($a->pager['page'] - 1).'">' . t('prev') . '</a></span> ';

		$o .=  "<span class=\"pager_first\"><a href=\"$url"."&page=1\">" . t('first') . "</a></span> ";

    		$numpages = $a->pager['total'] / $a->pager['itemspage'];

			$numstart = 1;
    		$numstop = $numpages;

    		if($numpages > 14) {
      			$numstart = (($pagenum > 7) ? ($pagenum - 7) : 1);
      			$numstop = (($pagenum > ($numpages - 7)) ? $numpages : ($numstart + 14));
    		}
   
		for($i = $numstart; $i <= $numstop; $i++){
      			if($i == $a->pager['page'])
				$o .= '<span class="pager_current">'.(($i < 10) ? '&nbsp;'.$i : $i);
			else
				$o .= "<span class=\"pager_n\"><a href=\"$url"."&page=$i\">".(($i < 10) ? '&nbsp;'.$i : $i)."</a>";
			$o .= '</span> ';
		}

		if(($a->pager['total'] % $a->pager['itemspage']) != 0) {
			if($i == $a->pager['page'])
				$o .= '<span class="pager_current">'.(($i < 10) ? '&nbsp;'.$i : $i);
			else
				$o .= "<span class=\"pager_n\"><a href=\"$url"."&page=$i\">".(($i < 10) ? '&nbsp;'.$i : $i)."</a>";
			$o .= '</span> ';
		}

		$lastpage = (($numpages > intval($numpages)) ? intval($numpages)+1 : $numpages);
		$o .= "<span class=\"pager_last\"><a href=\"$url"."&page=$lastpage\">" . t('last') . "</a></span> ";

    		if(($a->pager['total'] - ($a->pager['itemspage'] * $a->pager['page'])) > 0)
			$o .= '<span class="pager_next">'."<a href=\"$url"."&page=".($a->pager['page'] + 1).'">' . t('next') . '</a></span>';
		$o .= '</div>'."\r\n";
	}
	return $o;
}}


function get_my_url() {
	if(x($_SESSION,'my_url'))
		return $_SESSION['my_url'];
	return false;
}

function zrl($s,$force = false) {
	if(! strlen($s))
		return $s;
	if((! strpos($s,'/profile/')) && (! $force))
		return $s;
	$achar = strpos($s,'?') ? '&' : '?';
	$mine = get_my_url();
	if($mine and ! link_compare($mine,$s))
		return $s . $achar . 'zrl=' . urlencode($mine);
	return $s;
}

if(! function_exists('link_compare')) {
function link_compare($a,$b) {
	if(strcasecmp(normalise_link($a),normalise_link($b)) === 0)
		return true;
	return false;
}}

if(! function_exists('normalise_link')) {
function normalise_link($url) {
	$ret = str_replace(array('https:','//www.'), array('http:','//'), $url);
	return(rtrim($ret,'/'));
}}