phpBB.nl

Code: Selecteer alles

<?php

/*
////////////////////////////
	Lumon
	Written by: Stefan Hospes
	Start: 3 - 10 - 2006
	File: content_left_rss.php
////////////////////////////
*/


if ( !defined('INSYS') )
{
	die("Hacking attempt");
}

function content_sub_rss_config()
{
	return array(	'rss reader' => array('content/left','A rss reader','content_sub_rss',1,array('content_sub_rss',-1,'content_left_rss')),
					'rss reader right' => array('content/right','A rss reader','content_sub_rss',1,array('content_sub_rss',-1,'content_right_rss')));
}

function content_sub_rss()
{
	// The url of the xml feed
	$feed = 'http://www.ajax.nl/rss/';
	
	// Maximum amount of items to be displayed
	$amount = 5;
	
	// Enable caching
	$cache = true;
	
	// Cache dir
	$cache_dir = 'plugins/content/sub/rss_cache';
	
	if(is_writable($cache_dir))
	{
		// Fetch and Parse feed
		list($title,$link,$description,$elements) = parse_feed(fetch_feed($feed,$cache_dir,$cache),$amount);
		
		// Sort out title
		if($title != '')
		{
			$title = '<a title="'.$description.'" href="'.$link.'" target="_top">'.$title.'</a>';
		}
		else
		{
			$title = ERROR_41;
		}
	}
	else
	{
		$title = ERROR_41;
		$elements = ERROR_44;
	}
	
	// Load the sub
	load('theme_sub',array($title,$elements));
}

function fetch_feed($url,$cache_dir,$cache)
{ 
	$url_parts = parse_url($url);

    $filename = $url_parts['host'] . str_replace("/", ",", $url_parts['path']) . "_" . @$url_parts['query'];
	
    if(file_exists($cache_dir."/$filename")) 
	{
		$last = filemtime($cache_dir."/$filename");
		$create = 0;
		
		if(time() - $last > 60 * 60) 
		{
			$update = 1;
		} 
		else 
		{
			$update = 0;
		}
    } 
	else 
	{
		$create = 1;
		$update = 1;
    }

    if($create == 1 || ($cache == true && $update == 1)) 
	{
		$fp = @fsockopen($url_parts['host'], 80, $errno, $errstr, 5);
		
		if (!$fp) 
		{
			return "Couldn't open rss feed {$url} in {$_SERVER['PHP_SELF']}<br />\n";
		}
		
		fputs($fp, "GET " . $url_parts['path'] . "" . @$url_parts['query'] . " HTTP/1.0\r\n"
                ."Host: " . $url_parts['host'] . "\r\n"
                ."Connection: Close\r\n\r\n");
				
		$rss_data = '';

		while(!feof($fp)) 
		{
			$rss_data .= @fgets($fp, 1024);
		}

		list(, $rss_data) = explode("\r\n\r\n", $rss_data, 2);

		$output = @fopen($cache_dir."/$filename", "w+");
		
		if(!$output) 
		{
			return $rss_data;
		} 
		else 
		{
			// Update
			
			flock($output, LOCK_EX);
			fputs($output, $rss_data);
			flock($output, LOCK_UN);
			fclose($output);
		}
    }

    return file_get_contents($cache_dir."/$filename");
}

function parse_feed($data,$max)
{
	preg_match("/<title>(.*?)<\/title>/", $data, $feed_title);
    $title = (isset($feed_title[1]) ? $feed_title[1] : '');

    preg_match("/<link>(.*?)<\/link>/", $data, $feed_link);
    $link = (isset($feed_link[1]) ? $feed_link[1] : '');

    preg_match("/<description>(.*?)<\/description>/", $data, $feed_description);
    $description = (isset($feed_description[1]) ? $feed_description[1] : '');

    preg_match_all("/<item[^>]*>(.*?)<\/item>/s", $data, $feed_items);
	$items = (isset($feed_items[1]) ? $feed_items[1] : '');
	
	$elements = array();
	
	if(count($items) > 0)
	{		
		for($i = 0; $i < sizeof($items) && $i < $max; ++$i) 
		{	
			preg_match("/<title>(.*?)<\/title>/", $items[$i], $feed_title);
			preg_match("/<link>(.*?)<\/link>/", $items[$i], $feed_link);
			
			if(isset($feed_title[1]) && isset($feed_link[1]) && $feed_link[1] != '')
			{
				$elements[] = array(ucfirst((strlen($feed_title[1]) > 15) ? substr($feed_title[1],0,15).'..' : $feed_title[1] ),$feed_link[1]);
			}
		}
	}
	
	return array($title,$link,$description,(count($elements) > 0) ? $elements : ERROR_42);
}