class_bbcode.php

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<?php

/*
+--------------------------------------------------------------------------
|   Invision Power Board v2.1.6
|   =============================================
|   by Matthew Mecham
|   (c) 2001 - 2005 Invision Power Services, Inc.
|   http://www.invisionpower.com
|   =============================================
|   Web: http://www.invisionboard.com
|   Time: Thu, 04 May 2006 17:39:49 GMT
|   Release: b415613eeb952a2741ff6d53e0266428
|   Licence Info: http://www.invisionboard.com/?license
+---------------------------------------------------------------------------
|   > $Date: 2006-03-06 14:58:13 +0000 (Mon, 06 Mar 2006) $
|   > $Revision: 161 $
|   > $Author: bfarber $
+---------------------------------------------------------------------------
|
|   > BB Code NEWER Module
|   > Module written by Matt Mecham
|   > Date started: Wednesday 9th March 2005 11:31
|
+--------------------------------------------------------------------------
*/

/**
* BBCode Parsing: Core class
*
* This child class contains all methods
* specific to the new parsing methods
*
* @package		InvisionPowerBoard
* @subpackage	BBCodeParser
* @author  	 	Matt Mecham
* @version		2.1
* @since		2.1.0
*/

/**
*
*/

/**
* BBCode Parsing: Core class
*
* This child class contains all methods
* specific to the new parsing methods
*
* @package		InvisionPowerBoard
* @subpackage	BBCodeParser
* @author  	 	Matt Mecham
* @version		2.1
* @since		2.1.0
*/
class class_bbcode extends class_bbcode_core
{
	/*-------------------------------------------------------------------------*/
	// CONSTRUCTOR
	/*-------------------------------------------------------------------------*/
	
	function class_bbcode( )
	{
		
	}
	
	/*-------------------------------------------------------------------------*/
	// Manage the raw text before inserting into the DB
	/*-------------------------------------------------------------------------*/
	
	/**
	* Manage the raw text before inserting into the DB
	*
	* @param	string	Raw text
	* @return	string	Converted text
	*/
	function pre_db_parse( $txt="" )
	{
		//-----------------------------------------
		// Reset
		//-----------------------------------------
		
		$this->quote_open     = 0;
		$this->quote_closed   = 0;
		$this->quote_error    = 0;
		$this->error          = '';
		$this->image_count    = 0;
		$this->emoticon_count = 0;
		
		//-----------------------------------------
		// Remove session id's from any post
		//-----------------------------------------
		
		$txt = preg_replace( "#(\?|&amp;|;|&)s=([0-9a-zA-Z]){32}(&amp;|;|&|$)?#e", "\$this->regex_bash_session('\\1', '\\3')", $txt );
		
		//-----------------------------------------
		// convert <br> to \n
		//-----------------------------------------
		
		if ( ! $this->parse_nl2br )
		{
			$txt = str_replace( "\n", "", $txt );
		}
		
		$txt = preg_replace( "/<br>|<br \/>/", "\n", $txt );
		
		# XSS Clean
		if( $this->strip_hex_entity )
		{
			while( preg_match( "/[&|&amp\;]#x(\w+?);/i", $txt ) )
			{
				$txt = preg_replace( "/[&|&amp\;]#x(\w+?);/ies"		, "\$this->regex_bash_hex( '\\1' )" , $txt );
			}
			$txt = preg_replace( "#&amp(?!\;)#", "", $txt );
		}
				
		$txt = preg_replace( "#javascript\:#is"    , "java script:", $txt );
		$txt = preg_replace( "#vb(.+?)?script\:#is", "vb script:"  , $txt );
		$txt = str_replace(  "`"                   , "&#96;"       , $txt );
		$txt = preg_replace( "#moz\-binding:#is"   , "moz binding:", $txt );
		$txt = str_replace(  "<script"			   , "&lt;script"  , $txt );

		//-----------------------------------------
		// Are we parsing bbcode?
		//-----------------------------------------
		
		if ( $this->parse_bbcode )
		{
			//-----------------------------------------
			// Do [CODE] tag
			//-----------------------------------------
			
			$txt = preg_replace( "#\[code\](.+?)\[/code\]#ies", "\$this->regex_code_tag( '\\1' )", $txt );
			
			//-----------------------------------------
			// Do [QUOTE(name,date)] tags
			//-----------------------------------------
			
			$txt = preg_replace( "#(\[quote(.+?)?\].*\[/quote\])#ies" , "\$this->regex_parse_quotes('\\1')"  , $txt );

			// Quote changes \n to br
			$txt = preg_replace( "/<br>|<br \/>/", "\n", $txt );

			//-----------------------------------------
			// Auto parse URLs
			//-----------------------------------------
			
			$txt = preg_replace( "#(^|\s|>)((http|https|news|ftp)://\w+[^\s\[\]\<]+)#ie"  , "\$this->regex_build_url(array('html' => '\\2', 'show' => '\\2', 'st' => '\\1'))", $txt );
		
			/*-------------------------------------------------------------------------*/
			// If we are not parsing a siggie, lets have a bash
			// at the [PHP] [SQL] and [HTML] tags.
			/*-------------------------------------------------------------------------*/
			
			$txt = preg_replace( "#\[sql\](.+?)\[/sql\]#ies"    , "\$this->regex_sql_tag('\\1')"    , $txt );
			$txt = preg_replace( "#\[html\](.+?)\[/html\]#ies"  , "\$this->regex_html_tag('\\1')"   , $txt );
			
			//-----------------------------------------
			// left, right, center
			//-----------------------------------------
			
			$txt = preg_replace( "#\[(left|right|center)\](.+?)\[/\\1\]#is"  , "<div align=\"\\1\">\\2</div>", $txt );
			
			//-----------------------------------------
			// Indent => Block quote
			//-----------------------------------------
			
			while( preg_match( "#\[indent\](.+?)\[/indent\]#is" , $txt ) )
			{
				$txt = preg_replace( "#\[indent\](.+?)\[/indent\]#is"  , "<blockquote>\\1</blockquote>", $txt );
			}
			
			//-----------------------------------------
			// [LIST]    [*]    [/LIST]
			//-----------------------------------------
			
			while( preg_match( "#\n?\[list\](.+?)\[/list\]\n?#ies" , $txt ) )
			{
				$txt = preg_replace( "#\n?\[list\](.+?)\[/list\]\n?#ies", "\$this->regex_list('\\1')" , $txt );
			}
			
			while( preg_match( "#\n?\[list=(a|A|i|I|1)\](.+?)\[/list\]\n?#ies" , $txt ) )
			{
				$txt = preg_replace( "#\n?\[list=(a|A|i|I|1)\](.+?)\[/list\]\n?#ies", "\$this->regex_list('\\2','\\1')" , $txt );
			}
			
			//-----------------------------------------
			// Do [IMG] [FLASH] tags
			//-----------------------------------------
			
			if ( $this->ipsclass->vars['allow_images'] )
			{
				$txt = preg_replace( "#\[img\](.+?)\[/img\]#ie"                             , "\$this->regex_check_image('\\1')"          , $txt );
				$txt = preg_replace( "#(\[flash=)(\S+?)(\,)(\S+?)(\])(\S+?)(\[\/flash\])#ie", "\$this->regex_check_flash('\\2','\\4','\\6')", $txt );
			}
		
			//-----------------------------------------
			// Start off with the easy stuff
			//-----------------------------------------
			
			$txt = preg_replace( "#\[b\](.+?)\[/b\]#is", "<b>\\1</b>", $txt );
			$txt = preg_replace( "#\[i\](.+?)\[/i\]#is", "<i>\\1</i>", $txt );
			$txt = preg_replace( "#\[u\](.+?)\[/u\]#is", "<u>\\1</u>", $txt );
			$txt = preg_replace( "#\[s\](.+?)\[/s\]#is", "<strike>\\1</strike>", $txt );
			
			//-----------------------------------------
			// (c) (r) and (tm)
			//-----------------------------------------
			
			$txt = preg_replace( "#\(c\)#i"     , "&copy;" , $txt );
			$txt = preg_replace( "#\(tm\)#i"    , "&#153;" , $txt );
			$txt = preg_replace( "#\(r\)#i"     , "&reg;"  , $txt );
			
			//-----------------------------------------
			// [email][e-mail][/email]
			// [email=[e-mail]]Email me[/email]
			//-----------------------------------------
			
			$txt = preg_replace( "#\[email\](\S+?)\[/email\]#i"                                                                , "<a href=\"mailto:\\1\">\\1</a>", $txt );
			$txt = preg_replace( "#\[email\s*=\s*\&quot\;([\.\w\-]+\@[\.\w\-]+\.[\.\w\-]+)\s*\&quot\;\s*\](.*?)\[\/email\]#i"  , "<a href=\"mailto:\\1\">\\2</a>", $txt );
			$txt = preg_replace( "#\[email\s*=\s*([\.\w\-]+\@[\.\w\-]+\.[\w\-]+)\s*\](.*?)\[\/email\]#i"                       , "<a href=\"mailto:\\1\">\\2</a>", $txt );
			
			//-----------------------------------------
			// [url]http://www.index.com[/url]
			// [url=http://www.index.com]ibforums![/url]
			//-----------------------------------------
			
			$txt = preg_replace( "#\[url\](\S+?)\[/url\]#ie"                                       , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\1'))", $txt );
			$txt = preg_replace( "#\[url\s*=\s*\&quot\;\s*(\S+?)\s*\&quot\;\s*\](.*?)\[\/url\]#ie" , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\2'))", $txt );
			$txt = preg_replace( "#\[url\s*=\s*(\S+?)\s*\](.*?)\[\/url\]#ie"                       , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\2'))", $txt );
			
			//-----------------------------------------
			// font size, colour and font style
			// [font=courier]Text here[/font]
			// [size=6]Text here[/size]
			// [color=red]Text here[/color]
			// [background=color]Text here[/background]
			//-----------------------------------------
			
			while ( preg_match( "#\[background=([^\]]+)\](.+?)\[/background\]#ies", $txt ) )
			{
				$txt = preg_replace( "#\[background=([^\]]+)\](.+?)\[/background\]#ies", "\$this->regex_font_attr(array('s'=>'background','1'=>'\\1','2'=>'\\2'))", $txt );
			}
			
			while ( preg_match( "#\[size=([^\]]+)\](.+?)\[/size\]#ies", $txt ) )
			{
				$txt = preg_replace( "#\[size=([^\]]+)\](.+?)\[/size\]#ies"    , "\$this->regex_font_attr(array('s'=>'size','1'=>'\\1','2'=>'\\2'))", $txt );
			}
			
			while ( preg_match( "#\[font=([^\]]+)\](.+?)\[/font\]#ies", $txt ) )
			{
				$txt = preg_replace( "#\[font=([^\]]+)\](.+?)\[/font\]#ies"    , "\$this->regex_font_attr(array('s'=>'font','1'=>'\\1','2'=>'\\2'))", $txt );
			}
			
			while( preg_match( "#\[color=([^\]]+)\](.+?)\[/color\]#ies", $txt ) )
			{
				$txt = preg_replace( "#\[color=([^\]]+)\](.+?)\[/color\]#ies"  , "\$this->regex_font_attr(array('s'=>'col' ,'1'=>'\\1','2'=>'\\2'))", $txt );
			}
		}
		
		//-----------------------------------------
		// Swap \n back to <br>
		//-----------------------------------------
		
		$txt = preg_replace( "/\n/", "<br />", $txt );
		
		//-----------------------------------------
		// Unicode?
		//-----------------------------------------
		
		if ( $this->allow_unicode )
		{
			$txt = preg_replace("/&amp;#([0-9]+);/s", "&#\\1;", $txt );
		}
		
		//-----------------------------------------
		// Parse smilies (disallow smilies in siggies, or we'll have to query the DB for each post
		// and each signature when viewing a topic, not something that we really want to do.
		//-----------------------------------------
		
		if ( $this->parse_smilies )
		{
			$txt = ' '.$txt.' ';
		
			usort( $this->ipsclass->cache['emoticons'] , array( 'class_bbcode_core', 'smilie_length_sort' ) );
			
			if ( count( $this->ipsclass->cache['emoticons'] ) > 0 )
			{
				foreach( $this->ipsclass->cache['emoticons']  as $a_id => $row)
				{
					if ( $row['emo_set'] != $this->ipsclass->skin['_emodir'] )
					{
						continue;
					}
					
					$code  = $row['typed'];
					$image = $row['image'];
					
					//-----------------------------------------
					// Make safe for regex
					//-----------------------------------------
					$code = preg_quote($code, "/");

					$txt = preg_replace( "!(?<=[^\w&;/\"])$code(?=.\W|\"|\W.|\W$)!ei", "\$this->convert_emoticon('$code', '$image')", $txt );
				}
			}
			
			$txt = trim($txt);
			
			if ( $this->ipsclass->vars['max_emos'] )
			{
				if ($this->emoticon_count > $this->ipsclass->vars['max_emos'])
				{
					$this->error = 'too_many_emoticons';
				}
			}
		}
		
		//-----------------------------------------
		// Badwords
		//-----------------------------------------
		
		$txt = $this->bad_words($txt);
		
		//-----------------------------------------
		// Check BBcode
		//-----------------------------------------
		
		$txt = $this->bbcode_check($txt);
		
		return $txt;
	}
	
	/*-------------------------------------------------------------------------*/
	// This function processes the DB post before printing as output
	/*-------------------------------------------------------------------------*/
	
	/**
	* This function processes the DB post before printing as output
	*
	* @param	string	Raw text
	* @return	string	Converted text
	*/
	function pre_display_parse($t="")
	{
		if ( $this->parse_html )
		{
			$t = $this->post_db_parse_html( $t );
		}
		else
		{