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<?php /** * @package Gantry5 * @author RocketTheme http://www.rockettheme.com * @copyright Copyright (C) 2007 - 2017 RocketTheme, LLC * @license Dual License: MIT or GNU/GPLv2 and later * * http://opensource.org/licenses/MIT * http://www.gnu.org/licenses/gpl-2.0.html * * Gantry Framework code that extends GPL code is considered GNU/GPLv2 and later / namespace Gantry\Component\Content\Document; use Gantry\Component\Content\Block\ContentBlock; use Gantry\Component\Content\Block\HtmlBlock; use Gantry\Component\Gantry\GantryTrait; use Gantry\Component\Url\Url; use Gantry\Framework\Gantry; use RocketTheme\Toolbox\ResourceLocator\UniformResourceLocator; class HtmlDocument { use GantryTrait; public static $timestamp_age = 604800; public static $urlFilterParams; /* * @var array\|HtmlBlock[] / protected static $stack; protected static $frameworks = []; protected static $scripts = []; protected static $styles = []; protected static $availableFrameworks = [ 'jquery' => 'registerJquery', 'jquery.framework' => 'registerJquery', 'jquery.ui.core' => 'registerJqueryUiSortable', 'jquery.ui.sortable' => 'registerJqueryUiSortable', 'bootstrap.2' => 'registerBootstrap2', 'bootstrap.3' => 'registerBootstrap3', 'mootools' => 'registerMootools', 'mootools.framework' => 'registerMootools', 'mootools.core' => 'registerMootools', 'mootools.more' => 'registerMootoolsMore', 'lightcase' => 'registerLightcase', 'lightcase.init' => 'registerLightcaseInit', ]; public function __construct() { static::$stack = []; static::push(); } /* * Create new local instance of document allowing asset caching. / public static function push() { array_unshift(static::$stack, new HtmlBlock()); } /* * Return local instance of document allowing it to be cached. * * @return HtmlBlock / public static function pop() { return array_shift(static::$stack); } /* * @param ContentBlock $block * @return $this / public function addBlock(ContentBlock $block) { static::$stack[0]->addBlock($block); return $this; } /* * @param string $framework * @return bool / public static function addFramework($framework) { if (!isset(static::$availableFrameworks[$framework])) { return false; } static::getObject(); static::$stack[0]->addFramework($framework); return true; } /* * @param string\|array $element * @param int $priority * @param string $location * @return bool / public static function addStyle($element, $priority = 0, $location = 'head') { static::getObject(); return static::$stack[0]->addStyle($element, $priority, $location); } /* * @param string\|array $element * @param int $priority * @param string $location * @return bool / public static function addInlineStyle($element, $priority = 0, $location = 'head') { static::getObject(); return static::$stack[0]->addInlineStyle($element, $priority, $location); } /* * @param string\|array $element * @param int $priority * @param string $location * @return bool / public static function addScript($element, $priority = 0, $location = 'head') { static::getObject(); return static::$stack[0]->addScript($element, $priority, $location); } /* * @param string\|array $element * @param int $priority * @param string $location * @return bool / public static function addInlineScript($element, $priority = 0, $location = 'head') { static::getObject(); return static::$stack[0]->addInlineScript($element, $priority, $location); } /* * @param string $html * @param int $priority * @param string $location * @return bool / public static function addHtml($html, $priority = 0, $location = 'bottom') { static::getObject(); return static::$stack[0]->addHtml($html, $priority, $location); } /* * @param array $element * @param string $location * @param int $priority * @return bool / public static function addHeaderTag(array $element, $location = 'head', $priority = 0) { $success = false; switch ($element['tag']) { case 'link': if (!empty($element['rel']) && $element['rel'] === 'stylesheet') { $success = static::addStyle($element, $priority, $location); } break; case 'style': $success = static::addInlineStyle($element, $priority, $location); break; case 'script': if (!empty($element['src'])) { $success = static::addScript($element, $priority, $location); } elseif (!empty($element['content'])) { $success = static::addInlineScript($element, $priority, $location); } break; } return $success; } public static function getStyles($location = 'head') { static::getObject(); $styles = static::$stack[0]->getStyles($location); $output = []; foreach ($styles as $style) { switch ($style[':type']) { case 'file': $attribs = ''; if ($style['media']) { $attribs .= ' media="' . static::escape($style['media']) . '"'; } $output[] = sprintf( '<link rel="stylesheet" href="%s" type="%s"%s />', static::escape($style['href']), static::escape($style['type']), $attribs ); break; case 'inline': $attribs = ''; if ($style['type'] !== 'text/css') { $attribs .= ' type="' . static::escape($style['type']) . '"'; } $output[] = sprintf( '<style%s>%s</style>', $attribs, $style['content'] ); break; } } return $output; } public static function getScripts($location = 'head') { static::getObject(); $scripts = static::$stack[0]->getScripts($location); $output = []; foreach ($scripts as $script) { switch ($script[':type']) { case 'file': $attribs = ''; if ($script['async']) { $attribs .= ' async="async"'; } if ($script['defer']) { $attribs .= ' defer="defer"'; } $output[] = sprintf( '<script type="%s"%s src="%s"></script>', static::escape($script['type']), $attribs, static::escape($script['src']) ); break; case 'inline': $output[] = sprintf( '<script type="%s">%s</script>', static::escape($script['type']), $script['content'] ); break; } } return $output; } public static function getHtml($location = 'bottom') { static::getObject(); $htmls = static::$stack[0]->getHtml($location); $output = []; foreach ($htmls as $html) { $output[] = $html['html']; } return $output; } /* * Escape string (emulates twig filter). * * @param string\|object $string * @param string $strategy * @return string / public static function escape($string, $strategy = 'html') { if (!is_string($string)) { if (is_object($string) && method_exists($string, '__toString')) { $string = (string) $string; } elseif (in_array($strategy, ['html', 'js', 'css', 'html_attr', 'url'])) { return $string; } } switch ($strategy) { case 'html': return htmlspecialchars($string, ENT_QUOTES \| ENT_SUBSTITUTE, 'UTF-8'); case 'js': if (0 === strlen($string) ? false : (1 === preg_match('/^./su', $string) ? false : true)) { throw new \RuntimeException('The string to escape is not a valid UTF-8 string.'); } $string = preg_replace_callback( '#[^a-zA-Z0-9,\._]#Su', 'Gantry\\Component\\Content\\Document\\HtmlDocument::_escape_js_callback', $string ); return $string; case 'css': if (0 === strlen($string) ? false : (1 === preg_match('/^./su', $string) ? false : true)) { throw new \RuntimeException('The string to escape is not a valid UTF-8 string.'); } $string = preg_replace_callback( '#[^a-zA-Z0-9]#Su', 'Gantry\\Component\\Content\\Document\\HtmlDocument::_escape_css_callback', $string ); return $string; case 'html_attr': if (0 === strlen($string) ? false : (1 === preg_match('/^./su', $string) ? false : true)) { throw new \RuntimeException('The string to escape is not a valid UTF-8 string.'); } $string = preg_replace_callback( '#[^a-zA-Z0-9,\.\-_]#Su', 'Gantry\\Component\\Content\\Document\\HtmlDocument::_escape_html_attr_callback', $string ); return $string; case 'url': return rawurlencode($string); default: throw new \RuntimeException(sprintf('Invalid escaping strategy "%s" (valid ones: html, js, css, html_attr, url).', $strategy)); } } /* * @param $framework * @return bool * @deprecated 5.3 / public static function load($framework) { return static::addFramework($framework); } /* * Register assets. / public static function registerAssets() { static::registerFrameworks(); } public static function siteUrl() { return static::rootUri(); } /* * NOTE: In PHP this function can be called either from Gantry DI container or statically. * * @return string / public static function rootUri() { return ''; } /* * NOTE: In PHP this function can be called either from Gantry DI container or statically. * * @param bool $addDomain * @return string / public static function domain($addDomain = false) { return ''; } /* * Return URL to the resource. * * @example {{ url('gantry-theme://images/logo.png')\|default('http://www.placehold.it/150x100/f4f4f4') }} * * NOTE: In PHP this function can be called either from Gantry DI container or statically. * * @param string $url Resource to be located. * @param bool $domain True to include domain name. * @param int $timestamp_age Append timestamp to files that are less than x seconds old. Defaults to a week. * Use value <= 0 to disable the feature. * @param bool $allowNull True if non-existing files should return null. * @return string\|null Returns url to the resource or null if resource was not found. / public static function url($url, $domain = false, $timestamp_age = null, $allowNull = true) { if (!is_string($url) \|\| $url === '') { // Return null on invalid input. return null; } if ($url[0] === '#' \|\| $url[0] === '?') { // Handle urls with query string or fragment only. return str_replace(' ', '%20', $url); } $parts = Url::parse($url); if (!is_array($parts)) { // URL could not be parsed. return $allowNull ? null : str_replace(' ', '%20', $url); } // Make sure we always have scheme, host, port and path. $scheme = isset($parts['scheme']) ? $parts['scheme'] : ''; $host = isset($parts['host']) ? $parts['host'] : ''; $port = isset($parts['port']) ? $parts['port'] : ''; $path = isset($parts['path']) ? $parts['path'] : ''; if ($scheme && !$port) { // If URL has a scheme, we need to check if it's one of Gantry streams. $gantry = static::gantry(); /* @var UniformResourceLocator $locator / $locator = $gantry['locator']; if (!$locator->schemeExists($scheme)) { // If scheme does not exists as a stream, assume it's external. return str_replace(' ', '%20', $url); } // Attempt to find the resource (because of parse_url() we need to put host back to path). $newPath = $locator->findResource("{$scheme}://{$host}{$path}", false); if ($newPath === false) { if ($allowNull) { return null; } // Return location where the file would be if it was saved. $path = $locator->findResource("{$scheme}://{$host}{$path}", false, true); } else { $path = $newPath; } } elseif ($host \|\| $port) { // If URL doesn't have scheme but has host or port, it is external. return str_replace(' ', '%20', $url); } // At this point URL is either relative or absolute path; let us find if it is relative and not . or .. if ($path && '/' !== $path[0] && '.' !== $path[0]) { if ($timestamp_age === null) { $timestamp_age = static::$timestamp_age; } if ($timestamp_age > 0) { // We want to add timestamp to the URI: do it only for existing files. $realPath = @realpath(GANTRY5_ROOT . '/' . $path); if ($realPath && is_file($realPath)) { $time = filemtime($realPath); // Only append timestamp for files that are less than the maximum age. if ($time > time() - $timestamp_age) { $parts['query'] = (!empty($parts['query']) ? "{$parts['query']}&" : '') . sprintf('%x', $time); } } } // We need absolute URI instead of relative. $path = rtrim(static::rootUri(), '/') . '/' . $path; } // Set absolute URI. $uri = $path; // Add query string back. if (!empty($parts['query'])) { if (!$uri) $uri = static::rootUri(); $uri .= '?' . $parts['query']; } // Add fragment back. if (!empty($parts['fragment'])) { if (!$uri) $uri = static::rootUri(); $uri .= '#' . $parts['fragment']; } return static::domain($domain) . str_replace(' ', '%20', $uri); } /* * Filter stream URLs from HTML. * * @param string $html HTML input to be filtered. * @param bool $domain True to include domain name. * @param int $timestamp_age Append timestamp to files that are less than x seconds old. Defaults to a week. * Use value <= 0 to disable the feature. * @param bool $streamOnly Only touch streams. * @return string Returns modified HTML. / public static function urlFilter($html, $domain = false, $timestamp_age = null, $streamOnly = false) { static::$urlFilterParams = [$domain, $timestamp_age, $streamOnly]; // Tokenize all PRE, CODE and SCRIPT tags to avoid modifying any src\|href\|url in them $tokens = []; $html = preg_replace_callback('#<(pre\|code\|script)(\s[^>]+)?>.?</\\1>#ius', function($matches) use (&$tokens) { // Unfortunately uniqid() doesn't quite work in Windows, so we need to work it around by adding some randomness. $token = '@@'. uniqid(mt_rand(), true) . '@@'; $match = $matches[0]; $tokens[$token] = $match; return $token; }, $html); if ($streamOnly) { $gantry = static::gantry(); /** @var UniformResourceLocator $locator / $locator = $gantry['locator']; $schemes = $locator->getSchemes(); $list = []; foreach ($schemes as $scheme) { if (strpos($scheme, 'gantry-') === 0) { $list[] = substr($scheme, 7); } } if (empty($list)) { return $html; } $match = '(gantry-(' . implode('\|', $list). ')://.?)'; } else { $match = '(.?)'; } $html = preg_replace_callback('^(\s)(src\|href)="' . $match . '"^u', 'static::linkHandler', $html); $html = preg_replace_callback('^(\s)url$' . $match . '$^u', 'static::urlHandler', $html); $html = static::replaceTokens($tokens, $html); return $html; } /* * @param array $matches * @return string * @internal / public static function linkHandler(array $matches) { list($domain, $timestamp_age) = static::$urlFilterParams; $url = trim($matches[3]); $url = static::url($url, $domain, $timestamp_age, false); return "{$matches[1]}{$matches[2]}=\"{$url}\""; } /* * @param array $matches * @return string * @internal / public static function urlHandler(array $matches) { list($domain, $timestamp_age) = static::$urlFilterParams; $url = trim($matches[2], '"\''); $url = static::url($url, $domain, $timestamp_age, false); return "{$matches[1]}url({$url})"; } /* * This function is adapted from code coming from Twig. * * @param array $matches * @return string * @internal / public static function _escape_js_callback($matches) { $char = $matches[0]; / * A few characters have short escape sequences in JSON and JavaScript. * Escape sequences supported only by JavaScript, not JSON, are ommitted. * \" is also supported but omitted, because the resulting string is not HTML safe. / static $shortMap = [ '\\' => '\\\\', '/' => '\\/', "\x08" => '\b', "\x0C" => '\f', "\x0A" => '\n', "\x0D" => '\r', "\x09" => '\t', ]; if (isset($shortMap[$char])) { return $shortMap[$char]; } // \uHHHH $char = static::convert_encoding($char, 'UTF-16BE', 'UTF-8'); $char = strtoupper(bin2hex($char)); if (4 >= \strlen($char)) { return sprintf('\u%04s', $char); } return sprintf('\u%04s\u%04s', substr($char, 0, -4), substr($char, -4)); } /* * This function is adapted from code coming from Twig. * * @param $matches * @return string * @internal / public static function _escape_css_callback($matches) { $char = $matches[0]; return sprintf('\\%X ', 1 === \strlen($char) ? \ord($char) : static::ord($char)); } /* * This function is adapted from code coming from Twig and Zend Framework. * * @param array $matches * @return string * * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (https://www.zend.com) * @license https://framework.zend.com/license/new-bsd New BSD License * @internal / public static function _escape_html_attr_callback($matches) { $chr = $matches[0]; $ord = \ord($chr); / * The following replaces characters undefined in HTML with the * hex entity for the Unicode replacement character. / if (($ord <= 0x1f && "\t" !== $chr && "\n" !== $chr && "\r" !== $chr) \|\| ($ord >= 0x7f && $ord <= 0x9f)) { return '�'; } / * Check if the current character to escape has a name entity we should * replace it with while grabbing the hex value of the character. / if (1 === \strlen($chr)) { / * While HTML supports far more named entities, the lowest common denominator * has become HTML5's XML Serialisation which is restricted to the those named * entities that XML supports. Using HTML entities would result in this error: * XML Parsing Error: undefined entity / static $entityMap = [ 34 => '"', / quotation mark / 38 => '&', / ampersand / 60 => '<', / less-than sign / 62 => '>', / greater-than sign / ]; if (isset($entityMap[$ord])) { return $entityMap[$ord]; } return sprintf('&#x%02X;', $ord); } / * Per OWASP recommendations, we'll use hex entities for any other * characters where a named entity does not exist. / return sprintf('&#x%04X;', static::ord($chr)); } /* * Replace tokens with strings. * * @param array $tokens * @param $html * @return string\|NUll / protected static function replaceTokens(array $tokens, $html) { foreach ($tokens as $token => $replacement) { // We need to use callbacks to turn off backreferences ($1, \\1) in the replacement string. $callback = function() use ($replacement) { return $replacement; }; $html = preg_replace_callback('#' . preg_quote($token, '#') . '#u', $callback, $html); } return $html; } /* * Register loaded frameworks. / protected static function registerFrameworks() { foreach (static::$stack[0]->getFrameworks() as $framework) { if (isset(static::$availableFrameworks[$framework])) { call_user_func([get_called_class(), static::$availableFrameworks[$framework]]); } } } protected static function registerJquery() { static::addScript( [ 'src' => 'https://code.jquery.com/jquery-2.2.2.min.js', 'integrity' => 'sha256-36cp2Co+/62rEAAYHLmRCPIych47CvdM+uTBJwSzWjI=', 'crossorigin' => 'anonymous' ], 11 ); } protected static function registerJqueryUiSortable() { static::registerJquery(); static::addScript( [ 'src' => 'https://code.jquery.com/ui/1.11.4/jquery-ui.min.js', 'integrity' => 'sha256-xNjb53/rY+WmG+4L6tTl9m6PpqknWZvRt0rO1SRnJzw=', 'crossorigin' => 'anonymous' ], 11 ); } protected static function registerBootstrap2() { static::registerJquery(); static::addScript(['src' => 'https://maxcdn.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js'], 11); } protected static function registerBootstrap3() { static::registerJquery(); static::addScript(['src' => 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js'], 11); } protected static function registerMootools() { static::addScript(['src' => 'https://cdnjs.cloudflare.com/ajax/libs/mootools/1.5.2/mootools-core-compat.min.js'], 11); } protected static function registerMootoolsMore() { static::registerMootools(); static::addScript(['src' => 'https://cdnjs.cloudflare.com/ajax/libs/mootools-more/1.5.2/mootools-more-compat-compressed.js'], 11); } protected static function registerLightcase() { static::registerJquery(); static::addScript(['src' => static::url('gantry-assets://js/lightcase.js', false, null, false)], 11, 'footer'); static::addStyle(['href' => static::url('gantry-assets://css/lightcase.css', false, null, false)], 11); } protected static function registerLightcaseInit() { static::registerLightcase(); static::addInlineScript(['content' => "jQuery(document).ready(function($) { jQuery('[data-rel^=lightcase]').lightcase({maxWidth: '100%', maxHeight: '100%', video: {width: '1280', height: '720'}}); });"], 0, 'footer'); } protected static function getObject() { static $object; if (!$object) { // We need to initialize document for backwards compatibility (RokSprocket/RokGallery in WP). $object = Gantry::instance()['document']; } return $object; } /* * @param string $string * @param string $to * @param string $from * @return false\|string\|string[]\|null * @internal / private static function convert_encoding($string, $to, $from) { if (\function_exists('mb_convert_encoding')) { return mb_convert_encoding($string, $to, $from); } if (\function_exists('iconv')) { return iconv($from, $to, $string); } throw new \RuntimeException('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).'); } /* * @param string $string * @return false\|int\|mixed * @internal / private static function ord($string) { if (\function_exists('mb_ord')) { return mb_ord($string, 'UTF-8'); } $code = ($string = unpack('C', substr($string, 0, 4))) ? $string[1] : 0; if (0xF0 <= $code) { return (($code - 0xF0) << 18) + (($string[2] - 0x80) << 12) + (($string[3] - 0x80) << 6) + $string[4] - 0x80; } if (0xE0 <= $code) { return (($code - 0xE0) << 12) + (($string[2] - 0x80) << 6) + $string[3] - 0x80; } if (0xC0 <= $code) { return (($code - 0xC0) << 6) + $string[2] - 0x80; } return $code; } }

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