MyBB

 public_html/merge/boards/phpbb3/bbcode_parser.php

bbcode_parser.php

<?php
/**
 * MyBB 1.8 Merge System
 * Copyright 2014 MyBB Group, All Rights Reserved
 *
 * Website: http://www.mybb.com
 * License: http://www.mybb.com/download/merge-system/license/
 */

// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
    die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}

class BBCode_Parser extends BBCode_Parser_Plain {

    // This contains the attachment bbcode which is handled as special code as the id needs to be changed too
    var $attachment = "\[attachment=([0-9]+)\].*?\[/attachment\]";
    // Cache for attachment codes (pid and counter)
    var $pid;

    /**
     * Converts messages containing phpBB code to MyBB BBcode
     *
     * @param string $text the text to convert
     * @param int $uid user id of the text
     * @param int $pid
     * @return string the converted text
     */
    function convert($text, $uid=0, $pid=0)
    {
        $text = utf8_unhtmlentities($text);

        if(!empty($uid))
        {
            $text = str_replace(":{$uid}", '', $text);
        }

        $text = str_replace(array('[/*:m]', '[/list:o]', '[/list:u]'), array('', '[/list]', '[/list]'), $text);

        // Smilies are saved as img code, with comments before and after. Remove that stuff.
        $text = preg_replace("#<!-- s(.*?) --><img src=\"{SMILIES_PATH}(.*?)\" alt=\"(.*?)\" (.*?) /><!-- s(.*?) -->#i", "$1", $text);

        // Reset attachment counter
        $this->pid = $pid;

        return parent::convert($text);
    }

    function convert_title($text)
    {
        $text = utf8_unhtmlentities($text);

        return $text;
    }

    // Callback for attachment bbcodes
    function attachment_callback($matches)
    {
        // Sorry guys, without pid nothing to do
        if($this->pid == 0)
            return '';

        global $module;

        $options = array(
            "order_by"       => "attach_id",
            "limit"          => 1,
            "limit_start"    => $matches[1],
        );
        $query = $module->old_db->simple_select("attachments", "attach_id", "post_msg_id={$this->pid}", $options);
        $id = $module->old_db->fetch_field($query, "attach_id");
        $module->old_db->free_result($query);

        if($id > 0)
        {
            return "[attachment=o{$id}]";
        }
        else
        {
            // Invalid code, remove it
            return "[ATTACHMENT NOT FOUND]";
        }
    }
}

// Define the utf8_unhtmlentities function
function utf8_unhtmlentities($string) {
    // Decode hexadecimal and decimal numeric entities
    $string = preg_replace_callback(
        '~&#x([0-9a-f]+);~i',
        function($matches) {
            return mb_convert_encoding(pack('H*', $matches[1]), 'UTF-8', 'UTF-16BE');
        },
        $string
    );
    $string = preg_replace_callback(
        '~&#([0-9]+);~',
        function($matches) {
            return mb_convert_encoding(pack('n', $matches[1]), 'UTF-8', 'UTF-16BE');
        },
        $string
    );

    // Decode named entities (e.g., &amp;, &lt;, &gt;)
    return html_entity_decode($string, ENT_QUOTES | ENT_HTML5, 'UTF-8');
}
?>

public_html/merge/resources/functions.php

{
	// Replace numeric entities
	$string = preg_replace_callback('~&#x([0-9a-f]+);~i', create_function('$matches', 'return unichr(hexdec($matches[1]));'), $string);
	$string = preg_replace_callback('~&#([0-9]+);~', create_function('$matches', 'return unichr($matches[1]);'), $string);

	// Replace literal entities
	$trans_tbl = get_html_translation_table(HTML_ENTITIES);
	$trans_tbl = array_flip($trans_tbl);

	return strtr($string, $trans_tbl);
}

{
    // Replace numeric entities
    $string = preg_replace_callback(
        '~&#x([0-9a-f]+);~i', 
        function($matches) {
            return unichr(hexdec($matches[1]));
        }, 
        $string
    );

    // Replace literal entities
    $string = preg_replace_callback(
        '~&#([0-9]+);~', 
        function($matches) {
            return unichr($matches[1]);
        }, 
        $string
    );

    // Replace literal entities
    $trans_tbl = get_html_translation_table(HTML_ENTITIES);
    $trans_tbl = array_flip($trans_tbl);

    return strtr($string, $trans_tbl);
}