<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* BBCode class
*/
class bbcode
{
var $bbcode_uid = '';
var $bbcode_bitfield = '';
var $bbcode_cache = array();
var $bbcode_template = array();
var $bbcodes = array();
var $template_bitfield;
/**
* Constructor
*/
function __construct($bitfield = '')
{
$this->bbcode_set_bitfield($bitfield);
}
/**
* Init bbcode cache entries if bitfield is specified
*
* @param string $bitfield The bbcode bitfield
*/
function bbcode_set_bitfield($bitfield = '')
{
if ($bitfield)
{
$this->bbcode_bitfield = $bitfield;
$this->bbcode_cache_init();
}
}
/**
* Second pass bbcodes
*/
function bbcode_second_pass(&$message, $bbcode_uid = '', $bbcode_bitfield = false)
{
if ($bbcode_uid)
{
$this->bbcode_uid = $bbcode_uid;
}
if ($bbcode_bitfield !== false)
{
$this->bbcode_bitfield = $bbcode_bitfield;
// Init those added with a new bbcode_bitfield (already stored codes will not get parsed again)
$this->bbcode_cache_init();
}
if (!$this->bbcode_bitfield)
{
// Remove the uid from tags that have not been transformed into HTML
if ($this->bbcode_uid)
{
$message = str_replace(':' . $this->bbcode_uid, '', $message);
}
return;
}
$str = array('search' => array(), 'replace' => array());
$preg = array('search' => array(), 'replace' => array());
$bitfield = new bitfield($this->bbcode_bitfield);
$bbcodes_set = $bitfield->get_all_set();
$undid_bbcode_specialchars = false;
foreach ($bbcodes_set as $bbcode_id)
{
if (!empty($this->bbcode_cache[$bbcode_id]))
{
foreach ($this->bbcode_cache[$bbcode_id] as $type => $array)
{
foreach ($array as $search => $replace)
{
${$type}['search'][] = str_replace('$uid', $this->bbcode_uid, $search);
${$type}['replace'][] = $replace;
}
if (count($str['search']))
{
$message = str_replace($str['search'], $str['replace'], $message);
$str = array('search' => array(), 'replace' => array());
}
if (count($preg['search']))
{
// we need to turn the entities back into their original form to allow the
// search patterns to work properly
if (!$undid_bbcode_specialchars)
{
$message = str_replace(array(':', '.'), array(':', '.'), $message);
$undid_bbcode_specialchars = true;
}
foreach ($preg['search'] as $key => $search)
{
if (is_callable($preg['replace'][$key]))
{
$message = preg_replace_callback($search, $preg['replace'][$key], $message);
}
else
{
$message = preg_replace($search, $preg['replace'][$key], $message);
}
}
$preg = array('search' => array(), 'replace' => array());
}
}
}
}
// Remove the uid from tags that have not been transformed into HTML
$message = str_replace(':' . $this->bbcode_uid, '', $message);
}
/**
* Init bbcode cache
*
* requires: $this->bbcode_bitfield
* sets: $this->bbcode_cache with bbcode templates needed for bbcode_bitfield
*/
function bbcode_cache_init()
{
global $user, $phpbb_dispatcher, $phpbb_extension_manager, $phpbb_container, $phpbb_filesystem;
if (empty($this->template_filename))
{
$this->template_bitfield = new bitfield($user->style['bbcode_bitfield']);
$template = new \phpbb\template\twig\twig(
$phpbb_container->get('path_helper'),
$phpbb_container->get('config'),
new \phpbb\template\context(),
new \phpbb\template\twig\environment(
$phpbb_container->get('config'),
$phpbb_container->get('filesystem'),
$phpbb_container->get('path_helper'),
$phpbb_container->getParameter('core.cache_dir'),
$phpbb_container->get('ext.manager'),
new \phpbb\template\twig\loader(
$phpbb_filesystem
)
),
$phpbb_container->getParameter('core.cache_dir'),
$phpbb_container->get('user'),
$phpbb_container->get('template.twig.extensions.collection'),
$phpbb_extension_manager
);
$template->set_style();
$template->set_filenames(array('bbcode.html' => 'bbcode.html'));
$this->template_filename = $template->get_source_file_for_handle('bbcode.html');
}
$bbcode_ids = $rowset = $sql = array();
$bitfield = new bitfield($this->bbcode_bitfield);
$bbcodes_set = $bitfield->get_all_set();
foreach ($bbcodes_set as $bbcode_id)
{
if (isset($this->bbcode_cache[$bbcode_id]))
{
// do not try to re-cache it if it's already in
continue;
}
$bbcode_ids[] = $bbcode_id;
if ($bbcode_id > NUM_CORE_BBCODES)
{
$sql[] = $bbcode_id;
}
}
if (count($sql))
{
global $db;
$sql = 'SELECT *
FROM ' . BBCODES_TABLE . '
WHERE ' . $db->sql_in_set('bbcode_id', $sql);
$result = $db->sql_query($sql, 3600);
while ($row = $db->sql_fetchrow($result))
{
// To circumvent replacing newlines with <br /> for the generated html,
// we use carriage returns here. They are later changed back to newlines
$row['bbcode_tpl'] = str_replace("\n", "\r", $row['bbcode_tpl']);
$row['second_pass_replace'] = str_replace("\n", "\r", $row['second_pass_replace']);
$rowset[$row['bbcode_id']] = $row;
}
$db->sql_freeresult($result);
}
foreach ($bbcode_ids as $bbcode_id)
{
switch ($bbcode_id)
{
case BBCODE_ID_QUOTE:
$this->bbcode_cache[$bbcode_id] = array(
'str' => array(
'[/quote:$uid]' => $this->bbcode_tpl('quote_close', $bbcode_id)
),
'preg' => array(
'#\[quote(?:="(.*?)")?:$uid\]((?!\[quote(?:=".*?")?:$uid\]).)?#is' => function ($match) {
if (!isset($match[2]))
{
$match[2] = '';
}
return $this->bbcode_second_pass_quote($match[1], $match[2]);
},
)
);
break;
case BBCODE_ID_B:
$this->bbcode_cache[$bbcode_id] = array(
'str' => array(
'[b:$uid]' => $this->bbcode_tpl('b_open', $bbcode_id),
'[/b:$uid]' => $this->bbcode_tpl('b_close', $bbcode_id),
)
);
break;
case BBCODE_ID_I:
$this->bbcode_cache[$bbcode_id] = array(
'str' => array(
'[i:$uid]' => $this->bbcode_tpl('i_open', $bbcode_id),
'[/i:$uid]' => $this->bbcode_tpl('i_close', $bbcode_id),
)
);
break;
case BBCODE_ID_URL:
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#\[url:$uid\]((.*?))\[/url:$uid\]#s' => $this->bbcode_tpl('url', $bbcode_id),
'#\[url=([^\[]+?):$uid\](.*?)\[/url:$uid\]#s' => $this->bbcode_tpl('url', $bbcode_id),
)
);
break;
case BBCODE_ID_IMG:
if ($user->optionget('viewimg'))
{
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#\[img:$uid\](.*?)\[/img:$uid\]#s' => $this->bbcode_tpl('img', $bbcode_id),
)
);
}
else
{
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#\[img:$uid\](.*?)\[/img:$uid\]#s' => str_replace('$2', '[ img ]', $this->bbcode_tpl('url', $bbcode_id, true)),
)
);
}
break;
case BBCODE_ID_SIZE:
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#\[size=([\-\+]?\d+):$uid\](.*?)\[/size:$uid\]#s' => $this->bbcode_tpl('size', $bbcode_id),
)
);
break;
case BBCODE_ID_COLOR:
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'!\[color=(#[0-9a-f]{3}|#[0-9a-f]{6}|[a-z\-]+):$uid\](.*?)\[/color:$uid\]!is' => $this->bbcode_tpl('color', $bbcode_id),
)
);
break;
case BBCODE_ID_U:
$this->bbcode_cache[$bbcode_id] = array(
'str' => array(
'[u:$uid]' => $this->bbcode_tpl('u_open', $bbcode_id),
'[/u:$uid]' => $this->bbcode_tpl('u_close', $bbcode_id),
)
);
break;
case BBCODE_ID_CODE:
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#\[code(?:=([a-z]+))?:$uid\](.*?)\[/code:$uid\]#is' => function ($match) {
return $this->bbcode_second_pass_code($match[1], $match[2]);
},
)
);
break;
case BBCODE_ID_LIST:
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#(\[\/?(list|\*):[mou]?:?$uid\])[\n]{1}#' => "\$1",
'#(\[list=([^\[]+):$uid\])[\n]{1}#' => "\$1",
'#\[list=([^\[]+):$uid\]#' => function ($match) {
return $this->bbcode_list($match[1]);
},
),
'str' => array(
'[list:$uid]' => $this->bbcode_tpl('ulist_open_default', $bbcode_id),
'[/list:u:$uid]' => $this->bbcode_tpl('ulist_close', $bbcode_id),
'[/list:o:$uid]' => $this->bbcode_tpl('olist_close', $bbcode_id),
'[*:$uid]' => $this->bbcode_tpl('listitem', $bbcode_id),
'[/*:$uid]' => $this->bbcode_tpl('listitem_close', $bbcode_id),
'[/*:m:$uid]' => $this->bbcode_tpl('listitem_close', $bbcode_id)
),
);
break;
case BBCODE_ID_EMAIL:
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#\[email:$uid\]((.*?))\[/email:$uid\]#is' => $this->bbcode_tpl('email', $bbcode_id),
'#\[email=([^\[]+):$uid\](.*?)\[/email:$uid\]#is' => $this->bbcode_tpl('email', $bbcode_id)
)
);
break;
case BBCODE_ID_FLASH:
if ($user->optionget('viewflash'))
{
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#\[flash=([0-9]+),([0-9]+):$uid\](.*?)\[/flash:$uid\]#' => $this->bbcode_tpl('flash', $bbcode_id),
)
);
}
else
{
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array(
'#\[flash=([0-9]+),([0-9]+):$uid\](.*?)\[/flash:$uid\]#' => str_replace('$1', '$3', str_replace('$2', '[ flash ]', $this->bbcode_tpl('url', $bbcode_id, true)))
)
);
}
break;
case BBCODE_ID_ATTACH:
$this->bbcode_cache[$bbcode_id] = array(
'str' => array(
'[/attachment:$uid]' => $this->bbcode_tpl('inline_attachment_close', $bbcode_id)
),
'preg' => array(
'#\[attachment=([0-9]+):$uid\]#' => $this->bbcode_tpl('inline_attachment_open', $bbcode_id)
)
);
break;
default:
if (isset($rowset[$bbcode_id]))
{
if ($this->template_bitfield->get($bbcode_id))
{
// The bbcode requires a custom template to be loaded
if (!$bbcode_tpl = $this->bbcode_tpl($rowset[$bbcode_id]['bbcode_tag'], $bbcode_id))
{
// For some reason, the required template seems not to be available, use the default template
$bbcode_tpl = (!empty($rowset[$bbcode_id]['second_pass_replace'])) ? $rowset[$bbcode_id]['second_pass_replace'] : $rowset[$bbcode_id]['bbcode_tpl'];
}
else
{
// In order to use templates with custom bbcodes we need
// to replace all {VARS} to corresponding backreferences
// Note that backreferences are numbered from bbcode_match
if (preg_match_all('/\{(URL|LOCAL_URL|EMAIL|TEXT|SIMPLETEXT|INTTEXT|IDENTIFIER|COLOR|NUMBER)[0-9]*\}/', $rowset[$bbcode_id]['bbcode_match'], $m))
{
foreach ($m[0] as $i => $tok)
{
$bbcode_tpl = str_replace($tok, '$' . ($i + 1), $bbcode_tpl);
}
}
}
}
else
{
// Default template
$bbcode_tpl = (!empty($rowset[$bbcode_id]['second_pass_replace'])) ? $rowset[$bbcode_id]['second_pass_replace'] : $rowset[$bbcode_id]['bbcode_tpl'];
}
// Replace {L_*} lang strings
$bbcode_tpl = preg_replace_callback('/{L_([A-Z0-9_]+)}/', function ($match) use ($user) {
return (!empty($user->lang[$match[1]])) ? $user->lang($match[1]) : ucwords(strtolower(str_replace('_', ' ', $match[1])));
}, $bbcode_tpl);
if (!empty($rowset[$bbcode_id]['second_pass_replace']))
{
// The custom BBCode requires second-pass pattern replacements
$this->bbcode_cache[$bbcode_id] = array(
'preg' => array($rowset[$bbcode_id]['second_pass_match'] => $bbcode_tpl)
);
}
else
{
$this->bbcode_cache[$bbcode_id] = array(
'str' => array($rowset[$bbcode_id]['second_pass_match'] => $bbcode_tpl)
);
}
}
else
{
$this->bbcode_cache[$bbcode_id] = false;
}
break;
}
}
$bbcode_cache = $this->bbcode_cache;
$bbcode_bitfield = $this->bbcode_bitfield;
$bbcode_uid = $this->bbcode_uid;
/**
* Use this event to modify the bbcode_cache
*
* @event core.bbcode_cache_init_end
* @var array bbcode_cache The array of cached search and replace patterns of bbcodes
* @var string bbcode_bitfield The bbcode bitfield
* @var string bbcode_uid The bbcode uid
* @since 3.1.3-RC1
*/
$vars = array('bbcode_cache', 'bbcode_bitfield', 'bbcode_uid');
extract($phpbb_dispatcher->trigger_event('core.bbcode_cache_init_end', compact($vars)));
$this->bbcode_cache = $bbcode_cache;
$this->bbcode_bitfield = $bbcode_bitfield;
$this->bbcode_uid = $bbcode_uid;
}
/**
* Return bbcode template
*/
function bbcode_tpl($tpl_name, $bbcode_id = -1, $skip_bitfield_check = false)
{
static $bbcode_hardtpl = array();
if (empty($bbcode_hardtpl))
{
global $user;
$bbcode_hardtpl = array(
'b_open' => '<span style="font-weight: bold">',
'b_close' => '</span>',
'i_open' => '<span style="font-style: italic">',
'i_close' => '</span>',
'u_open' => '<span style="text-decoration: underline">',
'u_close' => '</span>',
'img' => '<img src="$1" class="postimage" alt="' . $user->lang['IMAGE'] . '" />',
'size' => '<span style="font-size: $1%; line-height: normal">$2</span>',
'color' => '<span style="color: $1">$2</span>',
'email' => '<a href="mailto:$1">$2</a>'
);
}
if ($bbcode_id != -1 && !$skip_bitfield_check && !$this->template_bitfield->get($bbcode_id))
{
return (isset($bbcode_hardtpl[$tpl_name])) ? $bbcode_hardtpl[$tpl_name] : false;
}
if (empty($this->bbcode_template))
{
if (($tpl = file_get_contents($this->template_filename)) === false)
{
trigger_error('Could not load bbcode template', E_USER_ERROR);
}
// replace \ with \\ and then ' with \'.
$tpl = str_replace('\\', '\\\\', $tpl);
$tpl = str_replace("'", "\'", $tpl);
// strip newlines and indent
$tpl = preg_replace("/\n[\n\r\s\t]*/", '', $tpl);
// Turn template blocks into PHP assignment statements for the values of $bbcode_tpl..
$this->bbcode_template = array();
// Capture the BBCode template matches
// Allow phpBB template or the Twig syntax
$matches = (preg_match_all('#<!-- BEGIN (.*?) -->(.*?)<!-- END (?:.*?) -->#', $tpl, $match)) ?:
preg_match_all('#{% for (.*?) in .*? %}(.*?){% endfor %}#s', $tpl, $match);
for ($i = 0; $i < $matches; $i++)
{
if (empty($match[1][$i]))
{
continue;
}
$this->bbcode_template[$match[1][$i]] = $this->bbcode_tpl_replace($match[1][$i], $match[2][$i]);
}
}
return (isset($this->bbcode_template[$tpl_name])) ? $this->bbcode_template[$tpl_name] : ((isset($bbcode_hardtpl[$tpl_name])) ? $bbcode_hardtpl[$tpl_name] : false);
}
/**
* Return bbcode template replacement
*/
function bbcode_tpl_replace($tpl_name, $tpl)
{
global $user;
static $replacements = array(
'quote_username_open' => array('{USERNAME}' => '$1'),
'color' => array('{COLOR}' => '$1', '{TEXT}' => '$2'),
'size' => array('{SIZE}' => '$1', '{TEXT}' => '$2'),
'img' => array('{URL}' => '$1'),
'flash' => array('{WIDTH}' => '$1', '{HEIGHT}' => '$2', '{URL}' => '$3'),
'url' => array('{URL}' => '$1', '{DESCRIPTION}' => '$2'),
'email' => array('{EMAIL}' => '$1', '{DESCRIPTION}' => '$2')
);
$tpl = preg_replace_callback('/{L_([A-Z0-9_]+)}/', function ($match) use ($user) {
return (!empty($user->lang[$match[1]])) ? $user->lang($match[1]) : ucwords(strtolower(str_replace('_', ' ', $match[1])));
}, $tpl);
if (!empty($replacements[$tpl_name]))
{
$tpl = strtr($tpl, $replacements[$tpl_name]);
}
return trim($tpl);
}
/**
* Second parse list bbcode
*/
function bbcode_list($type)
{
if ($type == '')
{
$tpl = 'ulist_open_default';
$type = 'default';
}
else if ($type == 'i')
{
$tpl = 'olist_open';
$type = 'lower-roman';
}
else if ($type == 'I')
{
$tpl = 'olist_open';
$type = 'upper-roman';
}
else if (preg_match('#^(disc|circle|square)$#i', $type))
{
$tpl = 'ulist_open';
$type = strtolower($type);
}
else if (preg_match('#^[a-z]$#', $type))
{
$tpl = 'olist_open';
$type = 'lower-alpha';
}
else if (preg_match('#[A-Z]#', $type))
{
$tpl = 'olist_open';
$type = 'upper-alpha';
}
else if (is_numeric($type))
{
$tpl = 'olist_open';
$type = 'decimal';
}
else
{
$tpl = 'olist_open';
$type = 'decimal';
}
return str_replace('{LIST_TYPE}', $type, $this->bbcode_tpl($tpl));
}
/**
* Second parse quote tag
*/
function bbcode_second_pass_quote($username, $quote)
{
// when using the /e modifier, preg_replace slashes double-quotes but does not
// seem to slash anything else
$quote = str_replace('\"', '"', $quote);
$username = str_replace('\"', '"', $username);
// remove newline at the beginning
if ($quote == "\n")
{
$quote = '';
}
$quote = (($username) ? str_replace('$1', $username, $this->bbcode_tpl('quote_username_open')) : $this->bbcode_tpl('quote_open')) . $quote;
return $quote;
}
/**
* Second parse code tag
*/
function bbcode_second_pass_code($type, $code)
{
// when using the /e modifier, preg_replace slashes double-quotes but does not
// seem to slash anything else
$code = str_replace('\"', '"', $code);
switch ($type)
{
case 'php':
// Not the english way, but valid because of hardcoded syntax highlighting
if (strpos($code, '<span class="syntaxdefault"><br /></span>') === 0)
{
$code = substr($code, 41);
}
// no break;
default:
$code = str_replace("\t", ' ', $code);
$code = str_replace(' ', ' ', $code);
$code = str_replace(' ', ' ', $code);
$code = str_replace("\n ", "\n ", $code);
// keep space at the beginning
if (!empty($code) && $code[0] == ' ')
{
$code = ' ' . substr($code, 1);
}
// remove newline at the beginning
if (!empty($code) && $code[0] == "\n")
{
$code = substr($code, 1);
}
break;
}
$code = $this->bbcode_tpl('code_open') . $code . $this->bbcode_tpl('code_close');
return $code;
}
/**
* Function to perform custom bbcode second pass by extensions
* can be used to assign bbcode pattern replacement
* Example: '#\[list=([^\[]+):$uid\]#e' => "\$this->bbcode_second_pass_by_extension('\$1')"
*
* Accepts variable number of parameters
*
* @return mixed Second pass result
*
* @deprecated 3.2.10 (To be removed 4.0.0)
*/
function bbcode_second_pass_by_extension()
{
global $phpbb_dispatcher;
$return = false;
$params_array = func_get_args();
/**
* Event to perform bbcode second pass with
* the custom validating methods provided by extensions
*
* @event core.bbcode_second_pass_by_extension
* @var array params_array Array with the function parameters
* @var mixed return Second pass result to return
*
* @since 3.1.5-RC1
*/
$vars = array('params_array', 'return');
extract($phpbb_dispatcher->trigger_event('core.bbcode_second_pass_by_extension', compact($vars)));
return $return;
}
}