path: root/inc/display.php

<?php
	if($_SERVER['SCRIPT_FILENAME'] == str_replace('\\', '/', __FILE__)) {
		// You cannot request this file directly.
		header('Location: ../', true, 302);
		exit;
	}
	
	/*
		Stuff to help with the display.
	*/
	
	
	/* 
		joaoptm78@gmail.com
		http://www.php.net/manual/en/function.filesize.php#100097
	*/
	function format_bytes($size) {
		$units = array(' B', ' KB', ' MB', ' GB', ' TB');
		for ($i = 0; $size >= 1024 && $i < 4; $i++) $size /= 1024;
		return round($size, 2).$units[$i];
	}
	
	function commaize($n) {
		$n = strval($n);
		return (intval($n) < 1000) ? $n : commaize(substr($n, 0, -3)) . ',' . substr($n, -3);
	}
	
	function doBoardListPart($list, $root) {
		global $config;
		
		$body = '';
		foreach($list as $board) {
			if(is_array($board))
				$body .= ' [' . doBoardListPart($board, $root) . '] ';
			else {
				if(($key = array_search($board, $list)) && gettype($key) == 'string') {
					$body .= ' <a href="' . $board . '">' . $key . '</a> /';
				} else {			
					$body .= ' <a href="' . $root . $board . '/' . $config['file_index'] . '">' . $board . '</a> /';
				}
			}
		}
		$body = preg_replace('/\/$/', '', $body);
		
		return $body;
	}
	
	function createBoardlist($mod=false) {
		global $config;
		
		if(!isset($config['boards'])) return Array('top'=>'','bottom'=>'');
		
		$body = doBoardListPart($config['boards'], $mod?'?/':$config['root']);
		if(!preg_match('/\] $/', $body))
			$body = '[' . $body . ']';
		
		$body = trim($body);
		
		return Array(
			'top' => '<div class="boardlist">' . $body . '</div>',
			'bottom' => '<div class="boardlist bottom">' . $body . '</div>'
		);
	}
	
	function error($message, $priority = true) {
		global $board, $mod, $config;
		
		if($config['syslog'] && $priority !== false) {
			// Use LOG_NOTICE instead of LOG_ERR or LOG_WARNING because most error message are not significant.
			_syslog($priority !== true ? $priority : LOG_NOTICE, $message);
		}
		
		if(defined('STDIN')) {
			// Running from CLI
			die('Error: ' . $message . "\n");
		}
		
		die(Element('page.html', Array(
			'config'=>$config,
			'title'=>'Error',
			'subtitle'=>'An error has occured.',
			'body'=>'<center>' .
			        '<h2>' . _($message) . '</h2>' .
				(isset($board) ? 
					"<p><a href=\"" . $config['root'] .
						($mod ? $config['file_mod'] . '?/' : '') .
						$board['dir'] . $config['file_index'] . "\">Go back</a>.</p>" : '') .
			        '</center>'
		)));
	}
	
	function loginForm($error=false, $username=false, $redirect=false) {
		global $config;
		
		die(Element('page.html', Array(
			'index'=>$config['root'],
			'title'=>_('Login'),
			'config'=>$config,
			'body'=>Element('login.html', Array(
				'config'=>$config,
				'error'=>$error,
				'username'=>utf8tohtml($username),
				'redirect'=>$redirect
				)
			)
		)));
	}
	
	function pm_snippet($body, $len=null) {
		global $config;
		
		if(!isset($len))
			$len = &$config['mod']['snippet_length'];
		
		// Replace line breaks with some whitespace
		$body = str_replace('<br/>', '  ', $body);
		
		// Strip tags
		$body = strip_tags($body);
		
		// Unescape HTML characters, to avoid splitting them in half
		$body = html_entity_decode($body, ENT_COMPAT, 'UTF-8');
		
		// calculate strlen() so we can add "..." after if needed
		$strlen = mb_strlen($body);
		
		$body = substr($body, 0, $len);
		
		// Re-escape the characters.
		return '<em>' . utf8tohtml($body) . ($strlen > $len ? '&hellip;' : '') . '</em>';
	}
	
	function capcode($cap) {
		global $config;
		
		if(!$cap)
			return false;
		
		$capcode = Array();
		if(isset($config['custom_capcode'][$cap])) {
			if(is_array($config['custom_capcode'][$cap])) {
				$capcode['cap'] = sprintf($config['custom_capcode'][$cap][0], $cap);
				if(isset($config['custom_capcode'][$cap][1]))
					$capcode['name'] = $config['custom_capcode'][$cap][1];
				if(isset($config['custom_capcode'][$cap][2]))
					$capcode['trip'] = $config['custom_capcode'][$cap][2];
			} else {
				$capcode['cap'] = sprintf($config['custom_capcode'][$cap], $cap);
			}
		} else {
			$capcode['cap'] = sprintf($config['capcode'], $cap);
		}
		
		return $capcode;
	}
	
	function truncate($body, $url, $max_lines = false, $max_chars = false) {
		global $config;
		
		if($max_lines === false)
			$max_lines = $config['body_truncate'];
		if($max_chars === false)
			$max_chars = $config['body_truncate_char'];
		$original_body = $body;
		
		$lines = substr_count($body, '<br/>');
		
		// Limit line count
		if($lines > $max_lines) {
			if(preg_match('/(((.*?)<br\/>){' . $max_lines . '})/', $body, $m))
				$body = $m[0];
		}
		
		$body = substr($body, 0, $max_chars);
		
		if($body != $original_body) {
			// Remove any corrupt tags at the end
			$body = preg_replace('/<([\w]+)?([^>]*)?$/', '', $body);
			
			// Open tags
			if(preg_match_all('/<([\w]+)[^>]*>/', $body, $open_tags)) {
				
				$tags = Array();
				for($x=0;$x<count($open_tags[0]);$x++) {
					if(!preg_match('/\/(\s+)?>$/', $open_tags[0][$x]))
						$tags[] = $open_tags[1][$x];
				}
				
				// List successfully closed tags
				if(preg_match_all('/(<\/([\w]+))>/', $body, $closed_tags)) {
					for($x=0;$x<count($closed_tags[0]);$x++) {
						unset($tags[array_search($closed_tags[2][$x], $tags)]);
					}
				}
				
				// remove broken HTML entity at the end (if existent)
				$body = preg_replace('/&[^;]+$/', '', $body);
				
				// Close any open tags
				foreach($tags as &$tag) {
					$body .= "</{$tag}>";
				}
			} else {
				// remove broken HTML entity at the end (if existent)
				$body = preg_replace('/&[^;]+$/', '', $body);
			}
			
			$body .= '<span class="toolong">Post too long. Click <a href="' . $url . '">here</a> to view the full text.</span>';
		}
		
		return $body;
	}
	
	function confirmLink($text, $title, $confirm, $href) {
		global $config, $mod;
		if($config['mod']['server-side_confirm'])
			return '<a onclick="if(confirm(\'' . htmlentities(addslashes($confirm)) . '\')) document.location=\'?/' . htmlentities(addslashes($href)) . '\';return false;" title="' . htmlentities($title) . '" href="?/confirm/' . $href . '">' . $text . '</a>';
		else
			return '<a onclick="return confirm(\'' . htmlentities(addslashes($confirm)) . '\')" title="' . htmlentities($title) . '" href="?/' . $href . '">' . $text . '</a>';
	}
	
	class Post {
		public function __construct($id, $thread, $subject, $email, $name, $trip, $capcode, $body, $time, $thumb, $thumbx, $thumby, $file, $filex, $filey, $filesize, $filename, $ip, $embed, $root=null, $mod=false) {
			global $config;
			if(!isset($root)) $root = &$config['root'];
			
			$this->id = $id;
			$this->thread = $thread;
			$this->subject = utf8tohtml($subject);
			$this->email = $email;
			$this->name = utf8tohtml($name);
			$this->trip = $trip;
			$this->capcode = $capcode;
			$this->body = $body;
			$this->time = $time;
			$this->thumb = $thumb;
			$this->thumbx = $thumbx;
			$this->thumby = $thumby;
			$this->file = $file;
			$this->filex = $filex;
			$this->filey = $filey;
			$this->filesize = $filesize;
			$this->filename = $filename;
			$this->ip = $ip;
			$this->embed = $embed;
			$this->root = $root;
			$this->mod = $mod;
			
			if($this->mod)
				// Fix internal links
				// Very complicated regex
				$this->body = preg_replace(
					'/<a((([a-zA-Z]+="[^"]+")|[a-zA-Z]+=[a-zA-Z]+|\s)*)href="' . preg_quote($config['root'], '/') . '(' . sprintf(preg_quote($config['board_path'], '/'), '\w+') . ')/',
					'<a $1href="?/$4',
					$this->body
				);
		}
		public function link($pre = '') {
			global $config, $board;
			
			return $this->root . $board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $this->thread) . '#' . $pre . $this->id;
		}
		public function postControls() {
			global $board, $config;
			
			$built = '';
			if($this->mod) {
				// Mod controls (on posts)
				
				// Delete
				if(hasPermission($config['mod']['delete'], $board['uri'], $this->mod))
					$built .= ' ' . confirmLink($config['mod']['link_delete'], 'Delete', 'Are you sure you want to delete this?', $board['uri'] . '/delete/' . $this->id);
				
				// Delete all posts by IP
				if(hasPermission($config['mod']['deletebyip'], $board['uri'], $this->mod))
					$built .= ' ' . confirmLink($config['mod']['link_deletebyip'], 'Delete all posts by IP', 'Are you sure you want to delete all posts by this IP address?', $board['uri'] . '/deletebyip/' . $this->id);
				
				// Delete all posts by IP (global)
				if(hasPermission($config['mod']['deletebyip_global'], $board['uri'], $this->mod))
					$built .= ' ' . confirmLink($config['mod']['link_deletebyip_global'], 'Delete all posts by IP across all boards', 'Are you sure you want to delete all posts by this IP address, across all boards?', $board['uri'] . '/deletebyip/' . $this->id . '/global');
				
				// Ban
				if(hasPermission($config['mod']['ban'], $board['uri'], $this->mod))
					$built .= ' <a title="Ban" href="?/' . $board['uri'] . '/ban/' . $this->id . '">' . $config['mod']['link_ban'] . '</a>';
				
				// Ban & Delete
				if(hasPermission($config['mod']['bandelete'], $board['uri'], $this->mod))
					$built .= ' <a title="Ban & Delete" href="?/' . $board['uri'] . '/ban&amp;delete/' . $this->id . '">' . $config['mod']['link_bandelete'] . '</a>';
				
				// Delete file (keep post)
				if(!empty($this->file) && hasPermission($config['mod']['deletefile'], $board['uri'], $this->mod))
					$built .= ' <a title="Remove file" href="?/' . $board['uri'] . '/deletefile/' . $this->id . '">' . $config['mod']['link_deletefile'] . '</a>';
				
				// Edit post
				if(hasPermission($config['mod']['editpost'], $board['uri'], $this->mod))
					$built .= ' <a title="Edit post" href="?/' . $board['uri'] . '/edit/' . $this->id . '">' . $config['mod']['link_editpost'] . '</a>';
				
				if(!empty($built))
					$built = '<span class="controls">' . $built . '</span>';
			}
			return $built;
		}
		
		public function build($index=false) {
			global $board, $config;
			
			return Element('post_reply.html', Array('config' => $config, 'board' => $board, 'post' => &$this, 'index' => $index));
		}
	};
	
	class Thread {
		public function __construct($id, $subject, $email, $name, $trip, $capcode, $body, $time, $thumb, $thumbx, $thumby, $file, $filex, $filey, $filesize, $filename, $ip, $sticky, $locked, $bumplocked, $embed, $root=null, $mod=false, $hr=true) {
			global $config;
			if(!isset($root)) $root = &$config['root'];
			
			$this->id = $id;
			$this->subject = utf8tohtml($subject);
			$this->email = $email;
			$this->name = utf8tohtml($name);
			$this->trip = $trip;
			$this->capcode = $capcode;
			$this->body = $body;
			$this->time = $time;
			$this->thumb = $thumb;
			$this->thumbx = $thumbx;
			$this->thumby = $thumby;
			$this->file = $file;
			$this->filex = $filex;
			$this->filey = $filey;
			$this->filesize = $filesize;
			$this->filename = $filename;
			$this->omitted = 0;
			$this->omitted_images = 0;
			$this->posts = Array();
			$this->ip = $ip;
			$this->sticky = $sticky;
			$this->locked = $locked;
			$this->bumplocked = $bumplocked;
			$this->embed = $embed;
			$this->root = $root;
			$this->mod = $mod;
			$this->hr = $hr;
			
			if($this->mod)
				// Fix internal links
				// Very complicated regex
				$this->body = preg_replace(
					'/<a(([a-zA-Z]+="[^"]+")|[a-zA-Z]+=[a-zA-Z]+|\s)*href="' . preg_quote($config['root'], '/') . '(' . sprintf(preg_quote($config['board_path'], '/'), '\w+') . ')/',
					'<a href="?/$3',
					$this->body
				);
		}
		public function link($pre = '') {
			global $config, $board;
			
			return $this->root . $board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $this->id) . '#' . $pre . $this->id;
		}
		public function add(Post $post) {
			$this->posts[] = $post;
		}
		public function postControls() {
			global $board, $config;
			
			$built = '';
			if($this->mod) {
				// Mod controls (on posts)
				// Delete
				if(hasPermission($config['mod']['delete'], $board['uri'], $this->mod))
					$built .= ' ' . confirmLink($config['mod']['link_delete'], 'Delete', 'Are you sure you want to delete this?', $board['uri'] . '/delete/' . $this->id);
				
				// Delete all posts by IP
				if(hasPermission($config['mod']['deletebyip'], $board['uri'], $this->mod))
					$built .= ' ' . confirmLink($config['mod']['link_deletebyip'], 'Delete all posts by IP', 'Are you sure you want to delete all posts by this IP address?', $board['uri'] . '/deletebyip/' . $this->id);
				
				// Delete all posts by IP (global)
				if(hasPermission($config['mod']['deletebyip_global'], $board['uri'], $this->mod))
					$built .= ' ' . confirmLink($config['mod']['link_deletebyip_global'], 'Delete all posts by IP across all boards', 'Are you sure you want to delete all posts by this IP address, across all boards?', $board['uri'] . '/deletebyip/' . $this->id . '/global');
				
				// Ban
				if(hasPermission($config['mod']['ban'], $board['uri'], $this->mod))
					$built .= ' <a title="Ban" href="?/' . $board['uri'] . '/ban/' . $this->id . '">' . $config['mod']['link_ban'] . '</a>';
				
				// Ban & Delete
				if(hasPermission($config['mod']['bandelete'], $board['uri'], $this->mod))
					$built .= ' <a title="Ban & Delete" href="?/' . $board['uri'] . '/ban&amp;delete/' . $this->id . '">' . $config['mod']['link_bandelete'] . '</a>';
				
				// Delete file (keep post)
				if(!empty($this->file) && $this->file != 'deleted' && hasPermission($config['mod']['deletefile'], $board['uri'], $this->mod))
					$built .= ' <a title="Remove file" href="?/' . $board['uri'] . '/deletefile/' . $this->id . '">' . $config['mod']['link_deletefile'] . '</a>';
				
				// Sticky
				if(hasPermission($config['mod']['sticky'], $board['uri'], $this->mod))
					if($this->sticky)
						$built .= ' <a title="Make thread not sticky" href="?/' . $board['uri'] . '/unsticky/' . $this->id . '">' . $config['mod']['link_desticky'] . '</a>';
					else
						$built .= ' <a title="Make thread sticky" href="?/' . $board['uri'] . '/sticky/' . $this->id . '">' . $config['mod']['link_sticky'] . '</a>';
				
				if(hasPermission($config['mod']['bumplock'], $board['uri'], $this->mod))
					if($this->bumplocked)
						$built .= ' <a title="Allow thread to be bumped" href="?/' . $board['uri'] . '/bumpunlock/' . $this->id . '">' . $config['mod']['link_bumpunlock'] . '</a>';
					else
						$built .= ' <a title="Prevent thread from being bumped" href="?/' . $board['uri'] . '/bumplock/' . $this->id . '">' . $config['mod']['link_bumplock'] . '</a>';
				
				// Lock
				if(hasPermission($config['mod']['lock'], $board['uri'], $this->mod))
					if($this->locked)
						$built .= ' <a title="Unlock thread" href="?/' . $board['uri'] . '/unlock/' . $this->id . '">' . $config['mod']['link_unlock'] . '</a>';
					else
						$built .= ' <a title="Lock thread" href="?/' . $board['uri'] . '/lock/' . $this->id . '">' . $config['mod']['link_lock'] . '</a>';
				
				if(hasPermission($config['mod']['move'], $board['uri'], $this->mod))
					$built .= ' <a title="Move thread to another board" href="?/' . $board['uri'] . '/move/' . $this->id . '">' . $config['mod']['link_move'] . '</a>';
				
				// Edit post
				if(hasPermission($config['mod']['editpost'], $board['uri'], $this->mod))
					$built .= ' <a title="Edit post" href="?/' . $board['uri'] . '/edit/' . $this->id . '">' . $config['mod']['link_editpost'] . '</a>';
				
				if(!empty($built))
					$built = '<span class="controls op">' . $built . '</span>';
			}
			return $built;
		}
		
		public function ratio() {
			return fraction($this->filex, $this->filey, ':');
		}
		
		public function build($index=false) {
			global $board, $config, $debug;
			
			$built = Element('post_thread.html', Array('config' => $config, 'board' => $board, 'post' => &$this, 'index' => $index));
			
			if(!$this->mod && $index && $config['cache']['enabled']) {
				cache::set($this->cache_key($index), $built);
			}
			
			return $built;
		}
		function cache_key($index) {
			global $board;
			
			return 'thread_' . ($index ? 'index_' : '') . $board['uri'] . '_' . $this->id;
		}
	};
?>