1 files changed, 417 insertions, 0 deletions
diff --git a/phpBB/phpbb/textformatter/s9e/parser.php b/phpBB/phpbb/textformatter/s9e/parser.php
new file mode 100644
index 0000000000..f7e4668980
--- /dev/null
+++ b/phpBB/phpbb/textformatter/s9e/parser.php
@@ -0,0 +1,417 @@
+<?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.
+*
+*/
+
+namespace phpbb\textformatter\s9e;
+
+use s9e\TextFormatter\Parser\AttributeFilters\UrlFilter;
+use s9e\TextFormatter\Parser\Logger;
+use s9e\TextFormatter\Parser\Tag;
+
+/**
+* s9e\TextFormatter\Parser adapter
+*/
+class parser implements \phpbb\textformatter\parser_interface
+{
+	/**
+	* @var \phpbb\event\dispatcher_interface
+	*/
+	protected $dispatcher;
+
+	/**
+	* @var \s9e\TextFormatter\Parser
+	*/
+	protected $parser;
+
+	/**
+	* Constructor
+	*
+	* @param \phpbb\cache\driver_interface $cache
+	* @param string $key Cache key
+	* @param factory $factory
+	* @param \phpbb\event\dispatcher_interface $dispatcher
+	*/
+	public function __construct(\phpbb\cache\driver\driver_interface $cache, $key, factory $factory, \phpbb\event\dispatcher_interface $dispatcher)
+	{
+		$parser = $cache->get($key);
+		if (!$parser)
+		{
+			$objects = $factory->regenerate();
+			$parser  = $objects['parser'];
+		}
+
+		$this->dispatcher = $dispatcher;
+		$this->parser = $parser;
+
+		$parser = $this;
+
+		/**
+		* Configure the parser service
+		*
+		* Can be used to:
+		*  - toggle features or BBCodes
+		*  - register variables or custom parsers in the s9e\TextFormatter parser
+		*  - configure the s9e\TextFormatter parser's runtime settings
+		*
+		* @event core.text_formatter_s9e_parser_setup
+		* @var \phpbb\textformatter\s9e\parser parser This parser service
+		* @since 3.2.0-a1
+		*/
+		$vars = array('parser');
+		extract($dispatcher->trigger_event('core.text_formatter_s9e_parser_setup', compact($vars)));
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function parse($text)
+	{
+		$parser = $this;
+
+		/**
+		* Modify a text before it is parsed
+		*
+		* @event core.text_formatter_s9e_parse_before
+		* @var \phpbb\textformatter\s9e\parser parser This parser service
+		* @var string text The original text
+		* @since 3.2.0-a1
+		*/
+		$vars = array('parser', 'text');
+		extract($this->dispatcher->trigger_event('core.text_formatter_s9e_parse_before', compact($vars)));
+
+		$xml = $this->parser->parse($text);
+
+		/**
+		* Modify a parsed text in its XML form
+		*
+		* @event core.text_formatter_s9e_parse_after
+		* @var \phpbb\textformatter\s9e\parser parser This parser service
+		* @var string xml The parsed text, in XML
+		* @since 3.2.0-a1
+		*/
+		$vars = array('parser', 'xml');
+		extract($this->dispatcher->trigger_event('core.text_formatter_s9e_parse_after', compact($vars)));
+
+		return $xml;
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function disable_bbcode($name)
+	{
+		$this->parser->disableTag(strtoupper($name));
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function disable_bbcodes()
+	{
+		$this->parser->disablePlugin('BBCodes');
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function disable_censor()
+	{
+		$this->parser->disablePlugin('Censor');
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function disable_magic_url()
+	{
+		$this->parser->disablePlugin('Autoemail');
+		$this->parser->disablePlugin('Autolink');
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function disable_smilies()
+	{
+		$this->parser->disablePlugin('Emoticons');
+		$this->parser->disablePlugin('Emoji');
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function enable_bbcode($name)
+	{
+		$this->parser->enableTag(strtoupper($name));
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function enable_bbcodes()
+	{
+		$this->parser->enablePlugin('BBCodes');
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function enable_censor()
+	{
+		$this->parser->enablePlugin('Censor');
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function enable_magic_url()
+	{
+		$this->parser->enablePlugin('Autoemail');
+		$this->parser->enablePlugin('Autolink');
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function enable_smilies()
+	{
+		$this->parser->enablePlugin('Emoticons');
+		$this->parser->enablePlugin('Emoji');
+	}
+
+	/**
+	* {@inheritdoc}
+	*
+	* This will convert the log entries found in s9e\TextFormatter's logger into phpBB error
+	* messages
+	*/
+	public function get_errors()
+	{
+		$errors = array();
+		foreach ($this->parser->getLogger()->getLogs() as $entry)
+		{
+			list(, $msg, $context) = $entry;
+
+			if ($msg === 'Tag limit exceeded')
+			{
+				if ($context['tagName'] === 'E')
+				{
+					$errors[] = array('TOO_MANY_SMILIES', $context['tagLimit']);
+				}
+				else if ($context['tagName'] === 'URL')
+				{
+					$errors[] = array('TOO_MANY_URLS', $context['tagLimit']);
+				}
+			}
+			else if ($msg === 'MAX_FONT_SIZE_EXCEEDED')
+			{
+				$errors[] = array($msg, $context['max_size']);
+			}
+			else if (preg_match('/^MAX_(?:FLASH|IMG)_(HEIGHT|WIDTH)_EXCEEDED$/D', $msg, $m))
+			{
+				$errors[] = array($msg, $context['max_' . strtolower($m[1])]);
+			}
+			else if ($msg === 'Tag is disabled' && $this->is_a_bbcode($context['tag']))
+			{
+				$name = strtolower($context['tag']->getName());
+				$errors[] = array('UNAUTHORISED_BBCODE', '[' . $name . ']');
+			}
+			else if ($msg === 'UNABLE_GET_IMAGE_SIZE')
+			{
+				$errors[] = array($msg);
+			}
+		}
+
+		// Deduplicate error messages. array_unique() only works on strings so we have to serialize
+		if (!empty($errors))
+		{
+			$errors = array_map('unserialize', array_unique(array_map('serialize', $errors)));
+		}
+
+		return $errors;
+	}
+
+	/**
+	* Return the instance of s9e\TextFormatter\Parser used by this object
+	*
+	* @return \s9e\TextFormatter\Parser
+	*/
+	public function get_parser()
+	{
+		return $this->parser;
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function set_var($name, $value)
+	{
+		if ($name === 'max_smilies')
+		{
+			$this->parser->setTagLimit('E', $value ?: PHP_INT_MAX);
+		}
+		else if ($name === 'max_urls')
+		{
+			$this->parser->setTagLimit('URL', $value ?: PHP_INT_MAX);
+		}
+		else
+		{
+			$this->parser->registeredVars[$name] = $value;
+		}
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function set_vars(array $vars)
+	{
+		foreach ($vars as $name => $value)
+		{
+			$this->set_var($name, $value);
+		}
+	}
+
+	/**
+	* Filter a flash object's height
+	*
+	* @see bbcode_firstpass::bbcode_flash()
+	*
+	* @param  string  $height
+	* @param  integer $max_height
+	* @param  Logger  $logger
+	* @return mixed              Original value if valid, FALSE otherwise
+	*/
+	static public function filter_flash_height($height, $max_height, Logger $logger)
+	{
+		if ($max_height && $height > $max_height)
+		{
+			$logger->err('MAX_FLASH_HEIGHT_EXCEEDED', array('max_height' => $max_height));
+
+			return false;
+		}
+
+		return $height;
+	}
+
+	/**
+	* Filter a flash object's width
+	*
+	* @see bbcode_firstpass::bbcode_flash()
+	*
+	* @param  string  $width
+	* @param  integer $max_width
+	* @param  Logger  $logger
+	* @return mixed              Original value if valid, FALSE otherwise
+	*/
+	static public function filter_flash_width($width, $max_width, Logger $logger)
+	{
+		if ($max_width && $width > $max_width)
+		{
+			$logger->err('MAX_FLASH_WIDTH_EXCEEDED', array('max_width' => $max_width));
+
+			return false;
+		}
+
+		return $width;
+	}
+
+	/**
+	* Filter the value used in a [size] BBCode
+	*
+	* @see bbcode_firstpass::bbcode_size()
+	*
+	* @param  string  $size     Original size
+	* @param  integer $max_size Maximum allowed size
+	* @param  Logger  $logger
+	* @return mixed             Original value if valid, FALSE otherwise
+	*/
+	static public function filter_font_size($size, $max_size, Logger $logger)
+	{
+		if ($max_size && $size > $max_size)
+		{
+			$logger->err('MAX_FONT_SIZE_EXCEEDED', array('max_size' => $max_size));
+
+			return false;
+		}
+
+		if ($size < 1 || !is_numeric($size))
+		{
+			return false;
+		}
+
+		return $size;
+	}
+
+	/**
+	* Filter an image's URL to enforce restrictions on its dimensions
+	*
+	* @see bbcode_firstpass::bbcode_img()
+	*
+	* @param  string  $url        Original URL
+	* @param  array   $url_config Config used by the URL filter
+	* @param  Logger  $logger
+	* @param  integer $max_height Maximum height allowed
+	* @param  integer $max_width  Maximum width allowed
+	* @return string|bool         Original value if valid, FALSE otherwise
+	*/
+	static public function filter_img_url($url, array $url_config, Logger $logger, $max_height, $max_width)
+	{
+		// Validate the URL
+		$url = UrlFilter::filter($url, $url_config, $logger);
+		if ($url === false)
+		{
+			return false;
+		}
+
+		if ($max_height || $max_width)
+		{
+			$imagesize = new \FastImageSize\FastImageSize();
+			$size_info = $imagesize->getImageSize($url);
+			if ($size_info === false)
+			{
+				$logger->err('UNABLE_GET_IMAGE_SIZE');
+				return false;
+			}
+
+			if ($max_height && $max_height < $size_info['height'])
+			{
+				$logger->err('MAX_IMG_HEIGHT_EXCEEDED', array('max_height' => $max_height));
+				return false;
+			}
+
+			if ($max_width && $max_width < $size_info['width'])
+			{
+				$logger->err('MAX_IMG_WIDTH_EXCEEDED', array('max_width' => $max_width));
+				return false;
+			}
+		}
+
+		return $url;
+	}
+
+	/**
+	* Test whether given tag consumes text that looks like BBCode-styled markup
+	*
+	* @param  Tag  $tag Original tag
+	* @return bool
+	*/
+	protected function is_a_bbcode(Tag $tag)
+	{
+		if ($tag->getLen() < 3)
+		{
+			return false;
+		}
+		$markup = substr($this->parser->getText(), $tag->getPos(), $tag->getLen());
+
+		return (bool) preg_match('(^\\[\\w++.*?\\]$)s', $markup);
+	}
+}