Issues in BBCode.php (master) - Issues in master - chillerlan/php-bbcode - Measure and Improve Code Quality continuously with Scrutinizer

Issues (45)

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Cross-Site Scripting

Cross-Site Scripting enables an attacker to inject code into the response of a web-request that is viewed by other users. It can for example be used to bypass access controls, or even to take over other users' accounts.

File Exposure

File Exposure allows an attacker to gain access to local files that he should not be able to access. These files can for example include database credentials, or other configuration files.

File Manipulation

File Manipulation enables an attacker to write custom data to files. This potentially leads to injection of arbitrary code on the server.

Object Injection

Object Injection enables an attacker to inject an object into PHP code, and can lead to arbitrary code execution, file exposure, or file manipulation attacks.

Code Injection

Code Injection enables an attacker to execute arbitrary code on the server.

Response Splitting

Response Splitting can be used to send arbitrary responses.

File Inclusion

File Inclusion enables an attacker to inject custom files into PHP's file loading mechanism, either explicitly passed to include, or for example via PHP's auto-loading mechanism.

Command Injection

Command Injection enables an attacker to inject a shell command that is execute with the privileges of the web-server. This can be used to expose sensitive data, or gain access of your server.

SQL Injection

SQL Injection enables an attacker to execute arbitrary SQL code on your database server gaining access to user data, or manipulating user data.

XPath Injection

XPath Injection enables an attacker to modify the parts of XML document that are read. If that XML document is for example used for authentication, this can lead to further vulnerabilities similar to SQL Injection.

LDAP Injection

LDAP Injection enables an attacker to inject LDAP statements potentially granting permission to run unauthorized queries, or modify content inside the LDAP tree.

Header Injection

Other Vulnerability

This category comprises other attack vectors such as manipulating the PHP runtime, loading custom extensions, freezing the runtime, or similar.

Regex Injection

Regex Injection enables an attacker to execute arbitrary code in your PHP process.

XML Injection

XML Injection enables an attacker to read files on your local filesystem including configuration files, or can be abused to freeze your web-server process.

Variable Injection

Variable Injection enables an attacker to overwrite program variables with custom data, and can lead to further vulnerabilities.

Unfortunately, the security analysis is currently not available for your project. If you are a non-commercial open-source project, please contact support to gain access.

src/BBCode.php (32 issues)

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Bug 32

Severity

Major 32

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<?php
/**
 * Class BBCode
 *
 * @filesource   BBCode.php
 * @created      19.04.2018
 * @package      chillerlan\BBCode
 * @author       smiley <[email protected]>
 * @copyright    2018 smiley
 * @license      MIT
 */

namespace chillerlan\BBCode;

use chillerlan\BBCode\Output\BBCodeOutputInterface;
use chillerlan\Settings\SettingsContainerInterface;
use Psr\Log\{
	LoggerAwareInterface, LoggerAwareTrait, LoggerInterface, NullLogger
};
use Psr\SimpleCache\CacheInterface;

class BBCode implements LoggerAwareInterface{
	use LoggerAwareTrait;

	/**
	 * @var \chillerlan\BBCode\BBCodeOptions|\chillerlan\Settings\SettingsContainerInterface
	 */
	protected $options;

	/**
	 * @var \Psr\SimpleCache\CacheInterface|\chillerlan\BBCode\BBCache
	 */
	protected $cache;

	/**
	 * @var \chillerlan\BBCode\SanitizerInterface
	 */
	protected $sanitizerInterface;

	/**
	 * @var \chillerlan\BBCode\Output\BBCodeOutputInterface
	 */
	protected $outputInterface;

	/**
	 * @var \chillerlan\BBCode\ParserMiddlewareInterface
	 */
	protected $parserMiddleware;

	/**
	 * @var array
	 */
	protected $tags = [];

	/**
	 * @var array
	 */
	protected $noparse = [];

	/**
	 * @var array
	 */
	protected $allowed = [];

	/**
	 * @var int
	 */
	protected $limit;

	/**
	 * BBCode constructor.
	 *
	 * @param \chillerlan\Settings\SettingsContainerInterface|null $options
	 * @param \Psr\SimpleCache\CacheInterface|null                 $cache
	 * @param \Psr\Log\LoggerInterface|null                        $logger
	 */
	public function __construct(SettingsContainerInterface $options = null, CacheInterface $cache = null, LoggerInterface $logger = null){
		$this
			->setCache($cache ?? new BBCache)
			->setLogger($logger ?? new NullLogger);

		$this->setOptions($options ?? new BBCodeOptions);
	}

	/**
	 * @param array $allowedTags
	 *
	 * @return \chillerlan\BBCode\BBCode
	 */
	public function allowTags(array $allowedTags):BBCode{
		$this->allowed = [];

		foreach($allowedTags as $tag){
			$tag = strtolower($tag);

			if(in_array($tag, $this->tags, true)){
				$this->allowed[] = $tag;
			}
		}

		return $this;
	}

	/**
	 * @param \Psr\SimpleCache\CacheInterface $cache
	 *
	 * @return \chillerlan\BBCode\BBCode
	 */
	public function setCache(CacheInterface $cache):BBCode{
		$this->cache = $cache;

		return $this;
	}

	/**
	 * @todo
	 *
	 * @param \chillerlan\Settings\SettingsContainerInterface $options
	 *
	 * @throws \chillerlan\BBCode\BBCodeException
	 * @return \chillerlan\BBCode\BBCode
	 */
	public function setOptions(SettingsContainerInterface $options):BBCode{
		$this->options = $options;

		mb_internal_encoding('UTF-8');

		if(
			ini_set('pcre.backtrack_limit', $this->options->pcre_backtrack_limit) === false
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			|| ini_set('pcre.recursion_limit', $this->options->pcre_recursion_limit) === false
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			|| ini_set('pcre.jit', $this->options->pcre_jit) === false
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
		){
			throw new BBCodeException('could not alter ini settings');
		}

		if(ini_get('pcre.backtrack_limit') !== (string)$this->options->pcre_backtrack_limit
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			|| ini_get('pcre.recursion_limit') !== (string)$this->options->pcre_recursion_limit
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			|| ini_get('pcre.jit') !== (string)$this->options->pcre_jit
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
		){
			throw new BBCodeException('ini settings differ from options');
		}

		if($this->options->sanitizeInput || $this->options->sanitizeOutput){
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			$this->sanitizerInterface  = new $this->options->sanitizerInterface($this->options);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

			if(!$this->sanitizerInterface instanceof SanitizerInterface){
				throw new BBcodeException('invalid SanitizerInterface');
			}
		}

		if($this->options->preParse || $this->options->postParse){
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			$this->parserMiddleware = new $this->options->parserMiddlewareInterface($this->options, $this->cache, $this->logger);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

			if(!$this->parserMiddleware instanceof ParserMiddlewareInterface){
				throw new BBcodeException('invalid ParserMiddlewareInterface');
			}
		}

		$this->outputInterface = new $this->options->outputInterface($this->options, $this->cache, $this->logger);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

		if(!$this->outputInterface instanceof BBCodeOutputInterface){
			throw new BBcodeException('invalid BBCodeOutputInterface');
		}

		$this->tags    = $this->outputInterface->getTags();
		$this->noparse = $this->outputInterface->getNoparse();
		$this->limit   = (int)$this->options->nestingLimit;
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

		if(is_array($this->options->allowedTags) && !empty($this->options->allowedTags)){
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			$this->allowTags($this->options->allowedTags);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
		}
		elseif($this->options->allowAvailableTags === true){
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			$this->allowed = $this->tags;
		}

		return $this;
	}

	/**
	 * Transforms a BBCode string to HTML (or whatevs)
	 *
	 * @param string $bbcode
	 *
	 * @return string
	 */
	public function parse(string $bbcode):string{

		// sanitize the input if needed
		if($this->options->sanitizeInput){
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			$bbcode = $this->sanitizerInterface->sanitizeInput($bbcode);
		}

		// run the pre-parser
		if($this->options->preParse){
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			$bbcode = $this->parserMiddleware->pre($bbcode);
		}

		// @todo: array < 2 elements causes a PREG_BACKTRACK_LIMIT_ERROR! (breaks match pattern)
		$singleTags = array_merge(['br', 'hr'], $this->outputInterface->getSingleTags());

		// close singletags: [br] -> [br][/br]
		$bbcode = preg_replace('#\[('.implode('|', $singleTags).')((?:\s|=)[^]]*)?]#is', '[$1$2][/$1]', $bbcode);

		// @todo: find non-singletags without a closing tag and close them (or convert the brackets to entities)

		// protect newlines
		$bbcode = str_replace(["\r", "\n"], ['', $this->options->placeholder_eol], $bbcode);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
		// parse the bbcode
		$bbcode = $this->parseBBCode($bbcode);

		// run the post-parser
		if($this->options->postParse){
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			$bbcode = $this->parserMiddleware->post($bbcode);
		}

		// replace the newline placeholders
		$bbcode = str_replace($this->options->placeholder_eol, $this->outputInterface->getEOL(), $bbcode);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

		// run the sanitizer/html purifier/whatever as a final step
		if($this->options->sanitizeOutput){
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
			$bbcode = $this->sanitizerInterface->sanitizeOutput($bbcode);
		}

		return $bbcode;
	}

	/**
	 * @param $bbcode
	 *
	 * @return string
	 */
	protected function parseBBCode($bbcode):string{
		static $callback_count = 0;

		$callback = false;

		if(is_array($bbcode) && count($bbcode) === 4){
			[$match, $tag, $attributes, $content] = $bbcode;
function someFunction() {
    $x = 5;
    echo $x;
}

			$tag        = strtolower($tag);
function someFunction() {
    $x = 5;
    echo $x;
}
			$attributes = $this->parseAttributes($attributes);
function someFunction() {
    $x = 5;
    echo $x;
}
			$callback   = true;

			$callback_count++;
		}
		else if(is_string($bbcode) && !empty($bbcode)){
			$match      = null;
			$tag        = null;
			$attributes = [];
			$content    = $bbcode;
		}
		else{
			return '';
		}

		if($callback_count < $this->limit && !in_array($tag, $this->noparse , true)){
			$content = preg_replace_callback('#\[(\w+)((?:\s|=)[^]]*)?]((?:[^[]|\[(?!/?\1((?:\s|=)[^]]*)?])|(?R))*)\[/\1]#', __METHOD__, $content);
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
			$e = preg_last_error();

			/**
			 * 1 - PREG_INTERNAL_ERROR
			 * 2 - PREG_BACKTRACK_LIMIT_ERROR
			 * 3 - PREG_RECURSION_LIMIT_ERROR
			 * 4 - PREG_BAD_UTF8_ERROR
			 * 5 - PREG_BAD_UTF8_OFFSET_ERROR
			 * 6 - PREG_JIT_STACKLIMIT_ERROR
			 */
			if($e !== PREG_NO_ERROR){
				$this->logger->debug('preg_error', ['errno' => $e, '$content' => $content]);

				$content = $match ?? '';//$content ?? $bbcode ??
			}
		}

		if($callback === true && in_array($tag, $this->allowed, true)){
			$content = $this->outputInterface->transform($tag, $attributes, $content, $match, $callback_count);
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
			$callback_count = 0;
		}

		return $content;
	}

	/**
	 * @param string $attributes
	 *
	 * @return array
	 */
	protected function parseAttributes(string $attributes):array{
		$attr = [];

		if(empty($attributes)){
			return $attr;
		}

		// @todo: fix attributes pattern: accept single and double quotes around the value
		if(preg_match_all('#(?<name>^|[[a-z]+)\=(["\']?)(?<value>[^"\']*?)\2(?: |$)#i', $attributes, $matches, PREG_SET_ORDER) > 0){
#			print_r(['$attributes' => $attributes, '$matches' => $matches]);

			foreach($matches as $attribute){
				$name = empty($attribute['name']) ? $this->options->placeholder_bbtag : strtolower(trim($attribute['name']));
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

				$attr[$name] = trim($attribute['value'], '"\' ');
			}
		}

		$e = preg_last_error();

		if($e !== PREG_NO_ERROR){
			$this->logger->debug('preg_error', ['errno' => $e, '$attributes' => $attributes]);
			$attr['__error__'] = $attributes;
		}

		return $attr;
	}

}


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src/BBCode.php (32 issues)

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1			<?php
2			/**
3			* Class BBCode
4			*
5			* @filesource BBCode.php
6			* @created 19.04.2018
7			* @package chillerlan\BBCode
8			* @author smiley <[email protected]>
9			* @copyright 2018 smiley
10			* @license MIT
11			*/
12
13			namespace chillerlan\BBCode;
14
15			use chillerlan\BBCode\Output\BBCodeOutputInterface;
16			use chillerlan\Settings\SettingsContainerInterface;
17			use Psr\Log\{
18			LoggerAwareInterface, LoggerAwareTrait, LoggerInterface, NullLogger
19			};
20			use Psr\SimpleCache\CacheInterface;
21
22			class BBCode implements LoggerAwareInterface{
23			use LoggerAwareTrait;
24
25			/**
26			* @var \chillerlan\BBCode\BBCodeOptions\|\chillerlan\Settings\SettingsContainerInterface
27			*/
28			protected $options;
29
30			/**
31			* @var \Psr\SimpleCache\CacheInterface\|\chillerlan\BBCode\BBCache
32			*/
33			protected $cache;
34
35			/**
36			* @var \chillerlan\BBCode\SanitizerInterface
37			*/
38			protected $sanitizerInterface;
39
40			/**

chillerlan / php-bbcode

Issues (45)

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src/BBCode.php (32 issues)

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