/
InsertTags.php
1499 lines (1249 loc) · 42.2 KB
/
InsertTags.php
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<?php
/*
* This file is part of Contao.
*
* (c) Leo Feyer
*
* @license LGPL-3.0-or-later
*/
namespace Contao;
use Contao\CoreBundle\Controller\InsertTagsController;
use Contao\CoreBundle\InsertTag\ChunkedText;
use Contao\CoreBundle\Routing\ResponseContext\HtmlHeadBag\HtmlHeadBag;
use Contao\CoreBundle\Util\LocaleUtil;
use Symfony\Component\Filesystem\Path;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Controller\ControllerReference;
use Symfony\Component\HttpKernel\Fragment\FragmentHandler;
/**
* A static class to replace insert tags
*
* Usage:
*
* $it = new InsertTags();
* echo $it->replace($text);
*/
class InsertTags extends Controller
{
private const MAX_NESTING_LEVEL = 64;
/**
* @var int
*/
private static $intRecursionCount = 0;
/**
* @var array
*/
protected static $arrItCache = array();
/**
* @var ?string
*/
protected static $strAllowedTagsRegex;
/**
* Make the constructor public
*/
public function __construct()
{
parent::__construct();
}
/**
* Reset the insert tag cache
*/
public static function reset()
{
static::$arrItCache = array();
static::$strAllowedTagsRegex = null;
}
/**
* Recursively replace insert tags with their values
*
* @param string $strBuffer The text with the tags to be replaced
* @param boolean $blnCache If false, non-cacheable tags will be replaced
*
* @return string The text with the replaced tags
*
* @deprecated Deprecated since Contao 4.13, to be removed in Contao 5.0.
* Use the InsertTagParser service instead.
*/
public function replace($strBuffer, $blnCache=true)
{
trigger_deprecation('contao/core-bundle', '4.13', 'Using "%s::%s()" has been deprecated and will no longer work in Contao 5.0. Use the InsertTagParser service instead.', __CLASS__, __METHOD__);
return (string) $this->replaceInternal((string) $strBuffer, (bool) $blnCache);
}
/**
* @internal
*/
public function replaceInternal(string $strBuffer, bool $blnCache): ChunkedText
{
if (self::$intRecursionCount > self::MAX_NESTING_LEVEL)
{
throw new \RuntimeException(sprintf('Maximum insert tag nesting level of %s reached', self::MAX_NESTING_LEVEL));
}
++self::$intRecursionCount;
try
{
return $this->executeReplace($strBuffer, $blnCache);
}
finally
{
--self::$intRecursionCount;
}
}
/**
* @internal
*/
private function executeReplace(string $strBuffer, bool $blnCache)
{
/** @var PageModel $objPage */
$objPage = $GLOBALS['objPage'] ?? null;
$container = System::getContainer();
// Backwards compatibility
// Preserve insert tags
if (!empty($GLOBALS['TL_CONFIG']['disableInsertTags']) || !$container->getParameter('contao.insert_tags.allowed_tags'))
{
$return = StringUtil::restoreBasicEntities($strBuffer);
return new ChunkedText(array($return));
}
$strBuffer = $this->encodeHtmlAttributes($strBuffer);
$strRegExpStart = '{{' // Starts with two opening curly braces
. '(' // Match the contents fo the tag
. '[a-zA-Z0-9\x80-\xFF]' // The first letter must not be a reserved character of Twig, Mustache or similar template engines (see #805)
. '(?:[^{}]|' // Match any character not curly brace or a nested insert tag
;
$strRegExpEnd = ')*)}}'; // Ends with two closing curly braces
$tags = preg_split(
'(' . $strRegExpStart . str_repeat('{{(?:' . substr($strRegExpStart, 3), 9) . str_repeat($strRegExpEnd, 10) . ')',
$strBuffer,
-1,
PREG_SPLIT_DELIM_CAPTURE
);
if (\count($tags) < 2)
{
$return = StringUtil::restoreBasicEntities($strBuffer);
return new ChunkedText(array($return));
}
$arrBuffer = array();
$blnFeUserLoggedIn = $container->get('contao.security.token_checker')->hasFrontendUser();
if (static::$strAllowedTagsRegex === null)
{
static::$strAllowedTagsRegex = '(' . implode('|', array_map(
static function ($allowedTag)
{
return '^' . implode('.+', array_map('preg_quote', explode('*', $allowedTag))) . '$';
},
$container->getParameter('contao.insert_tags.allowed_tags')
)) . ')';
}
// Create one cache per cache setting (see #7700)
$arrCache = &static::$arrItCache[$blnCache];
for ($_rit=0, $_cnt=\count($tags); $_rit<$_cnt; $_rit+=2)
{
$arrBuffer[$_rit] = $tags[$_rit];
// Skip empty tags
if (!isset($tags[$_rit+1]))
{
break;
}
$tags[$_rit+1] = (string) $this->replaceInternal($tags[$_rit+1], $blnCache);
$strTag = $tags[$_rit+1];
$flags = explode('|', $strTag);
$tag = array_shift($flags);
$elements = explode('::', $tag);
// Load the value from cache
if (isset($arrCache[$strTag]) && $elements[0] != 'page' && !\in_array('refresh', $flags))
{
$arrBuffer[$_rit+1] = (string) $arrCache[$strTag];
continue;
}
if (preg_match(static::$strAllowedTagsRegex, $elements[0]) !== 1)
{
$arrBuffer[$_rit+1] = '{{' . $strTag . '}}';
continue;
}
// Skip certain elements if the output will be cached
if ($blnCache)
{
if ($elements[0] == 'date' || $elements[0] == 'ua' || $elements[0] == 'post' || ($elements[1] ?? null) == 'back' || ($elements[1] ?? null) == 'referer' || \in_array('uncached', $flags) || strncmp($elements[0], 'cache_', 6) === 0)
{
/** @var FragmentHandler $fragmentHandler */
$fragmentHandler = $container->get('fragment.handler');
$attributes = array('insertTag' => '{{' . $strTag . '}}');
/** @var Request|null $request */
$request = $container->get('request_stack')->getCurrentRequest();
if (null !== $request && ($scope = $request->attributes->get('_scope')))
{
$attributes['_scope'] = $scope;
}
$arrBuffer[$_rit+1] = $fragmentHandler->render(
new ControllerReference(
InsertTagsController::class . '::renderAction',
$attributes,
array('clientCache' => (int) ($objPage->clientCache ?? 0), 'pageId' => ($objPage->id ?? null), 'request' => Environment::get('request'))
),
'esi',
array('ignore_errors'=>false) // see #48
);
continue;
}
}
$arrCache[$strTag] = '';
// Replace the tag
switch (strtolower($elements[0]))
{
// Date
case 'date':
$flags[] = 'attr';
$arrCache[$strTag] = Date::parse($elements[1] ?? ($objPage->dateFormat ?? Config::get('dateFormat')));
break;
// Accessibility tags
case 'lang':
if (empty($elements[1]))
{
$arrCache[$strTag] = '</span>';
}
else
{
$arrCache[$strTag] = $arrCache[$strTag] = '<span lang="' . StringUtil::specialchars($elements[1]) . '">';
}
break;
// Line break
case 'br':
$arrCache[$strTag] = '<br>';
break;
// E-mail addresses
case 'email':
case 'email_open':
case 'email_url':
if (empty($elements[1]))
{
$arrCache[$strTag] = '';
break;
}
$strEmail = StringUtil::specialcharsUrl(StringUtil::encodeEmail($elements[1]));
// Replace the tag
switch (strtolower($elements[0]))
{
case 'email':
$arrCache[$strTag] = '<a href="mailto:' . $strEmail . '" class="email">' . preg_replace('/\?.*$/', '', $strEmail) . '</a>';
break;
case 'email_open':
$arrCache[$strTag] = '<a href="mailto:' . $strEmail . '" title="' . $strEmail . '" class="email">';
break;
case 'email_url':
$arrCache[$strTag] = $strEmail;
break;
}
break;
// Label tags
case 'label':
$flags[] = 'attr';
$keys = explode(':', $elements[1]);
if (\count($keys) < 2)
{
$arrCache[$strTag] = '';
break;
}
if ($keys[0] == 'LNG' && \count($keys) == 2)
{
try
{
$arrCache[$strTag] = $container->get('contao.intl.locales')->getDisplayNames(array($keys[1]))[$keys[1]];
break;
}
catch (\Throwable $exception)
{
// Fall back to loading the label via $GLOBALS['TL_LANG']
}
}
if ($keys[0] == 'CNT' && \count($keys) == 2)
{
try
{
$arrCache[$strTag] = $container->get('contao.intl.countries')->getCountries()[strtoupper($keys[1])] ?? '';
break;
}
catch (\Throwable $exception)
{
// Fall back to loading the label via $GLOBALS['TL_LANG']
}
}
$file = $keys[0];
// Map the key (see #7217)
switch ($file)
{
case 'CNT':
$file = 'countries';
break;
case 'LNG':
$file = 'languages';
break;
case 'MOD':
case 'FMD':
$file = 'modules';
break;
case 'FFL':
$file = 'tl_form_field';
break;
case 'CACHE':
$file = 'tl_page';
break;
case 'XPL':
$file = 'explain';
break;
case 'XPT':
$file = 'exception';
break;
case 'MSC':
case 'ERR':
case 'CTE':
case 'PTY':
case 'FOP':
case 'CHMOD':
case 'DAYS':
case 'MONTHS':
case 'UNITS':
case 'CONFIRM':
case 'DP':
case 'COLS':
case 'SECTIONS':
case 'DCA':
case 'CRAWL':
$file = 'default';
break;
}
try
{
System::loadLanguageFile($file);
}
catch (\InvalidArgumentException $exception)
{
$container->get('monolog.logger.contao.error')->error('Invalid label insert tag {{' . $strTag . '}} on page ' . Environment::get('uri') . ': ' . $exception->getMessage());
}
if (\count($keys) == 2)
{
$arrCache[$strTag] = $GLOBALS['TL_LANG'][$keys[0]][$keys[1]];
}
else
{
$arrCache[$strTag] = $GLOBALS['TL_LANG'][$keys[0]][$keys[1]][$keys[2]];
}
break;
// Front end user
case 'user':
if ($blnFeUserLoggedIn)
{
$flags[] = 'attr';
$this->import(FrontendUser::class, 'User');
$value = $this->User->{$elements[1]};
if (!$value)
{
$arrCache[$strTag] = $value;
break;
}
$this->loadDataContainer('tl_member');
if (($GLOBALS['TL_DCA']['tl_member']['fields'][$elements[1]]['inputType'] ?? null) == 'password')
{
$arrCache[$strTag] = '';
break;
}
$value = StringUtil::deserialize($value);
$rgxp = $GLOBALS['TL_DCA']['tl_member']['fields'][$elements[1]]['eval']['rgxp'] ?? null;
$opts = $GLOBALS['TL_DCA']['tl_member']['fields'][$elements[1]]['options'] ?? null;
$rfrc = $GLOBALS['TL_DCA']['tl_member']['fields'][$elements[1]]['reference'] ?? null;
if ($rgxp == 'date')
{
$arrCache[$strTag] = Date::parse($objPage->dateFormat ?? Config::get('dateFormat'), $value);
}
elseif ($rgxp == 'time')
{
$arrCache[$strTag] = Date::parse($objPage->timeFormat ?? Config::get('timeFormat'), $value);
}
elseif ($rgxp == 'datim')
{
$arrCache[$strTag] = Date::parse($objPage->datimFormat ?? Config::get('datimFormat'), $value);
}
elseif (\is_array($value))
{
$arrCache[$strTag] = implode(', ', $value);
}
elseif (\is_array($opts) && ArrayUtil::isAssoc($opts))
{
$arrCache[$strTag] = $opts[$value] ?? $value;
}
elseif (\is_array($rfrc))
{
$arrCache[$strTag] = isset($rfrc[$value]) ? ((\is_array($rfrc[$value])) ? $rfrc[$value][0] : $rfrc[$value]) : $value;
}
else
{
$arrCache[$strTag] = $value;
}
// Convert special characters (see #1890)
$arrCache[$strTag] = StringUtil::specialchars($arrCache[$strTag]);
}
break;
// Link
case 'link':
case 'link_open':
case 'link_url':
case 'link_title':
case 'link_target':
case 'link_name':
$strTarget = null;
$strClass = '';
// Back link
if ($elements[1] == 'back')
{
trigger_deprecation('contao/core-bundle', '4.9', 'Using the link::back insert tag has been deprecated and will no longer work in Contao 5.0.');
$strUrl = 'javascript:history.go(-1)';
$strTitle = $GLOBALS['TL_LANG']['MSC']['goBack'] ?? null;
// No language files if the page is cached
if (!$strTitle)
{
$strTitle = 'Go back';
}
$strName = $strTitle;
}
// External links
elseif (strncmp($elements[1], 'http://', 7) === 0 || strncmp($elements[1], 'https://', 8) === 0)
{
$strUrl = StringUtil::specialcharsUrl($elements[1]);
$strTitle = $elements[1];
$strName = str_replace(array('http://', 'https://'), '', $strUrl);
}
// Regular link
else
{
// User login page
if ($elements[1] == 'login')
{
if (!$blnFeUserLoggedIn)
{
break;
}
$this->import(FrontendUser::class, 'User');
$elements[1] = $this->User->loginPage;
}
$objNextPage = PageModel::findByIdOrAlias($elements[1]);
if ($objNextPage === null)
{
// Prevent broken markup with link_open and link_close (see #92)
if (strtolower($elements[0]) == 'link_open')
{
$arrCache[$strTag] = '<a>';
}
break;
}
$strUrl = '';
// Do not generate URL for insert tags that don't need it
if (\in_array(strtolower($elements[0]), array('link', 'link_open', 'link_url'), true))
{
switch ($objNextPage->type)
{
case 'redirect':
$strUrl = $objNextPage->url;
if (strncasecmp($strUrl, 'mailto:', 7) === 0)
{
$strUrl = StringUtil::encodeEmail($strUrl);
}
break;
case 'forward':
if ($objNextPage->jumpTo)
{
$objNext = PageModel::findPublishedById($objNextPage->jumpTo);
}
else
{
$objNext = PageModel::findFirstPublishedRegularByPid($objNextPage->id);
}
if ($objNext instanceof PageModel)
{
$strUrl = \in_array('absolute', \array_slice($elements, 2), true) || \in_array('absolute', $flags, true) ? $objNext->getAbsoluteUrl() : $objNext->getFrontendUrl();
break;
}
// no break
default:
$strUrl = \in_array('absolute', \array_slice($elements, 2), true) || \in_array('absolute', $flags, true) ? $objNextPage->getAbsoluteUrl() : $objNextPage->getFrontendUrl();
break;
}
}
$strName = $objNextPage->title;
$strTarget = $objNextPage->target ? ' target="_blank" rel="noreferrer noopener"' : '';
$strClass = $objNextPage->cssClass ? sprintf(' class="%s"', $objNextPage->cssClass) : '';
$strTitle = $objNextPage->pageTitle ?: $objNextPage->title;
}
if (!$strTarget && \in_array('blank', \array_slice($elements, 2), true))
{
$strTarget = ' target="_blank" rel="noreferrer noopener"';
}
// Replace the tag
switch (strtolower($elements[0]))
{
case 'link':
$arrCache[$strTag] = sprintf('<a href="%s" title="%s"%s%s>%s</a>', $strUrl ?: './', StringUtil::specialcharsAttribute($strTitle), $strClass, $strTarget, $strName);
break;
case 'link_open':
$arrCache[$strTag] = sprintf('<a href="%s" title="%s"%s%s>', $strUrl ?: './', StringUtil::specialcharsAttribute($strTitle), $strClass, $strTarget);
break;
case 'link_url':
$arrCache[$strTag] = $strUrl ?: './';
break;
case 'link_title':
$arrCache[$strTag] = StringUtil::specialcharsAttribute($strTitle);
break;
case 'link_target':
trigger_deprecation('contao/core-bundle', '4.4', 'Using the link_target insert tag has been deprecated and will no longer work in Contao 5.0.');
$arrCache[$strTag] = $strTarget ? ' target=_blank rel=noreferrer noopener' : $strTarget;
break;
case 'link_name':
$arrCache[$strTag] = StringUtil::specialcharsAttribute($strName);
break;
}
break;
// Closing link tag
case 'link_close':
case 'email_close':
$arrCache[$strTag] = '</a>';
break;
// Insert article
case 'insert_article':
if (($strOutput = $this->getArticle($elements[1], false, true)) !== false)
{
$arrCache[$strTag] = ltrim($strOutput);
}
else
{
$arrCache[$strTag] = '<p class="error">' . sprintf($GLOBALS['TL_LANG']['MSC']['invalidPage'], $elements[1]) . '</p>';
}
break;
// Insert content element
case 'insert_content':
$arrCache[$strTag] = $this->getContentElement($elements[1]);
break;
// Insert module
case 'insert_module':
$arrCache[$strTag] = $this->getFrontendModule($elements[1]);
break;
// Insert form
case 'insert_form':
$arrCache[$strTag] = $this->getForm($elements[1]);
break;
// Article
case 'article':
case 'article_open':
case 'article_url':
case 'article_title':
if (!(($objArticle = ArticleModel::findByIdOrAlias($elements[1])) instanceof ArticleModel) || !(($objPid = $objArticle->getRelated('pid')) instanceof PageModel))
{
break;
}
/** @var PageModel $objPid */
$params = '/articles/' . ($objArticle->alias ?: $objArticle->id);
$strUrl = \in_array('absolute', \array_slice($elements, 2), true) || \in_array('absolute', $flags, true) ? $objPid->getAbsoluteUrl($params) : $objPid->getFrontendUrl($params);
$strTarget = \in_array('blank', \array_slice($elements, 2), true) ? ' target="_blank" rel="noreferrer noopener"' : '';
// Replace the tag
switch (strtolower($elements[0]))
{
case 'article':
$arrCache[$strTag] = sprintf('<a href="%s" title="%s"%s>%s</a>', $strUrl, StringUtil::specialcharsAttribute($objArticle->title), $strTarget, $objArticle->title);
break;
case 'article_open':
$arrCache[$strTag] = sprintf('<a href="%s" title="%s"%s>', $strUrl, StringUtil::specialcharsAttribute($objArticle->title), $strTarget);
break;
case 'article_url':
$arrCache[$strTag] = $strUrl;
break;
case 'article_title':
$arrCache[$strTag] = StringUtil::specialcharsAttribute($objArticle->title);
break;
}
break;
// Article teaser
case 'article_teaser':
$objTeaser = ArticleModel::findByIdOrAlias($elements[1]);
if ($objTeaser !== null)
{
$arrCache[$strTag] = StringUtil::toHtml5($objTeaser->teaser);
}
break;
// Last update
case 'last_update':
$flags[] = 'attr';
$strQuery = "SELECT MAX(tstamp) AS tc";
$bundles = $container->getParameter('kernel.bundles');
if (isset($bundles['ContaoNewsBundle']))
{
$strQuery .= ", (SELECT MAX(tstamp) FROM tl_news) AS tn";
}
if (isset($bundles['ContaoCalendarBundle']))
{
$strQuery .= ", (SELECT MAX(tstamp) FROM tl_calendar_events) AS te";
}
$strQuery .= " FROM tl_content";
$objUpdate = Database::getInstance()->query($strQuery);
if ($objUpdate->numRows)
{
$arrCache[$strTag] = Date::parse($elements[1] ?? ($objPage->datimFormat ?? Config::get('datimFormat')), max($objUpdate->tc, $objUpdate->tn, $objUpdate->te));
}
break;
// Version
case 'version':
$arrCache[$strTag] = VERSION . '.' . BUILD;
break;
// Request token
case 'request_token':
trigger_deprecation('contao/core-bundle', '4.13', 'Using the request_token insert tag has been deprecated and will no longer work in Contao 5.0.');
$arrCache[$strTag] = REQUEST_TOKEN;
break;
// POST data
case 'post':
$flags[] = 'attr';
$arrCache[$strTag] = Input::post($elements[1]);
break;
// Conditional tags (if, if not)
case 'iflng':
case 'ifnlng':
if (!empty($elements[1]) && $this->languageMatches($elements[1]) === (strtolower($elements[0]) === 'ifnlng'))
{
// Skip everything until the next tag
for (; $_rit<$_cnt; $_rit+=2)
{
// Case-insensitive match for iflng/ifnlng optionally followed by "::" or "|"
if (1 === preg_match('/^' . preg_quote($elements[0], '/') . '(?:$|::|\|)/i', $tags[$_rit+3] ?? ''))
{
$tags[$_rit+2] = '';
break;
}
}
}
// Does not output anything and the cache must not be used
unset($arrCache[$strTag]);
$arrBuffer[$_rit+1] = '';
continue 2;
// Environment
case 'env':
$flags[] = 'urlattr';
switch ($elements[1])
{
case 'host':
$arrCache[$strTag] = Idna::decode(Environment::get('host'));
break;
case 'http_host':
$arrCache[$strTag] = Idna::decode(Environment::get('httpHost'));
break;
case 'url':
$arrCache[$strTag] = Idna::decode(Environment::get('url'));
break;
case 'path':
$arrCache[$strTag] = Idna::decode(Environment::get('base'));
break;
case 'request':
$arrCache[$strTag] = Environment::get('indexFreeRequest');
break;
case 'ip':
$arrCache[$strTag] = Environment::get('ip');
break;
case 'referer':
$arrCache[$strTag] = $this->getReferer(true);
break;
case 'files_url':
$arrCache[$strTag] = $container->get('contao.assets.files_context')->getStaticUrl();
break;
case 'assets_url':
case 'plugins_url':
case 'script_url':
$arrCache[$strTag] = $container->get('contao.assets.assets_context')->getStaticUrl();
break;
case 'base_url':
$arrCache[$strTag] = $container->get('request_stack')->getCurrentRequest()->getBaseUrl();
break;
}
break;
// Page
case 'page':
if ($objPage)
{
if (!$objPage->parentPageTitle && $elements[1] == 'parentPageTitle')
{
$elements[1] = 'parentTitle';
}
elseif (!$objPage->mainPageTitle && $elements[1] == 'mainPageTitle')
{
$elements[1] = 'mainTitle';
}
}
$responseContext = $container->get('contao.routing.response_context_accessor')->getResponseContext();
if ($responseContext && $responseContext->has(HtmlHeadBag::class) && \in_array($elements[1], array('pageTitle', 'description'), true))
{
/** @var HtmlHeadBag $htmlHeadBag */
$htmlHeadBag = $responseContext->get(HtmlHeadBag::class);
switch ($elements[1])
{
case 'pageTitle':
$arrCache[$strTag] = htmlspecialchars($htmlHeadBag->getTitle());
break;
case 'description':
$arrCache[$strTag] = htmlspecialchars($htmlHeadBag->getMetaDescription());
break;
}
}
elseif ($objPage)
{
// Do not use StringUtil::specialchars() here (see #4687)
if (!\in_array($elements[1], array('title', 'parentTitle', 'mainTitle', 'rootTitle', 'pageTitle', 'parentPageTitle', 'mainPageTitle', 'rootPageTitle'), true))
{
$flags[] = 'attr';
}
$arrCache[$strTag] = $objPage->{$elements[1]};
}
break;
// User agent
case 'ua':
trigger_deprecation('contao/core-bundle', '4.13', 'Using the "ua" insert tag has been deprecated and will no longer work in Contao 5.0.');
$flags[] = 'attr';
$ua = Environment::get('agent');
if (!empty($elements[1]))
{
$arrCache[$strTag] = $ua->{$elements[1]};
}
else
{
$arrCache[$strTag] = '';
}
break;
// Abbreviations
case 'abbr':
case 'acronym':
if (!empty($elements[1]))
{
$arrCache[$strTag] = '<abbr title="' . StringUtil::specialchars($elements[1]) . '">';
}
else
{
$arrCache[$strTag] = '</abbr>';
}
break;
// Images
case 'figure':
// Expected format: {{figure::<from>[?<key>=<value>,[&<key>=<value>]*]}}
list($from, $configuration) = $this->parseUrlWithQueryString($elements[1] ?? '');
if (null === $from || 2 !== \count($elements) || Validator::isInsecurePath($from) || Path::isAbsolute($from))
{
$arrCache[$strTag] = '';
break;
}
$size = $configuration['size'] ?? null;
$template = $configuration['template'] ?? '@ContaoCore/Image/Studio/figure.html.twig';
unset($configuration['size'], $configuration['template']);
// Render the figure
$figureRenderer = $container->get('contao.image.studio.figure_renderer');
try
{
$arrCache[$strTag] = $figureRenderer->render($from, $size, $configuration, $template) ?? '';
}
catch (\Throwable $e)
{
$arrCache[$strTag] = '';
}
break;
case 'image':
case 'picture':
$width = null;
$height = null;
$alt = '';
$class = '';
$rel = '';
$strFile = $elements[1];
$mode = '';
$size = null;
$strTemplate = 'picture_default';
// Take arguments
if (strpos($elements[1], '?') !== false)
{
$arrChunks = explode('?', urldecode($elements[1]), 2);
$strSource = StringUtil::decodeEntities($arrChunks[1]);
$strSource = str_replace('[&]', '&', $strSource);
$arrParams = explode('&', $strSource);
foreach ($arrParams as $strParam)
{
list($key, $value) = explode('=', $strParam);
switch ($key)
{
case 'width':
$width = (int) $value;
break;
case 'height':
$height = (int) $value;
break;
case 'alt':
$alt = $value;
break;
case 'class':
$class = $value;
break;
case 'rel':
$rel = $value;
break;
case 'mode':
$mode = $value;
break;
case 'size':
$size = is_numeric($value) ? (int) $value : $value;
break;
case 'template':
$strTemplate = preg_replace('/[^a-z0-9_]/i', '', $value);
break;
}
}
$strFile = $arrChunks[0];
}
if (Validator::isUuid($strFile))
{
// Handle UUIDs
$objFile = FilesModel::findByUuid($strFile);
if ($objFile === null)
{
$arrCache[$strTag] = '';
break;
}
$strFile = $objFile->path;
}
elseif (is_numeric($strFile))
{
// Handle numeric IDs (see #4805)
$objFile = FilesModel::findByPk($strFile);
if ($objFile === null)
{
$arrCache[$strTag] = '';
break;
}
$strFile = $objFile->path;
}
elseif (Validator::isInsecurePath($strFile))
{
throw new \RuntimeException('Invalid path ' . $strFile);
}
$maxImageWidth = Config::get('maxImageWidth');
// Check the maximum image width
if ($maxImageWidth > 0 && $width > $maxImageWidth)
{
trigger_deprecation('contao/core-bundle', '4.0', 'Using a maximum front end width has been deprecated and will no longer work in Contao 5.0. Remove the "maxImageWidth" configuration and use responsive images instead.');
$width = $maxImageWidth;
$height = null;
}