Issues in SapiEmitter.php (master) - Issues in master - Mosaic/Http - Measure and Improve Code Quality continuously with Scrutinizer

Issues (8)

Security Analysis no request data

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/Emitters/SapiEmitter.php (6 issues)

Labels

Bug 6

Severity

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<?php

namespace Mosaic\Http\Emitters;

use Mosaic\Http\Emitter;
use Psr\Http\Message\ResponseInterface;
use RuntimeException;

class SapiEmitter implements Emitter
{
    /**
     * @param ResponseInterface $response
     * @param null              $maxBufferLevel
     *
     * @throws RuntimeException
     */
    public function emit(ResponseInterface $response, $maxBufferLevel = null)
    {
        if (headers_sent()) {
            throw new RuntimeException('Unable to emit response. Headers were already sent');
        }

        if (!$response->hasHeader('Content-Length')) {
            // PSR-7 indicates int OR null for the stream size; for null values,
            // we will not auto-inject the Content-Length.
            if (null !== $response->size()) {
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
                $response = $response->addHeader('Content-Length', (string) $response->size());
            }
        }

        $this->emitStatus($response);
        $this->emitHeaders($response);
        $this->emitBody($response, $maxBufferLevel);
    }

    /**
     * @param Response $response
     */
    private function emitStatus(ResponseInterface $response)
    {
        $reasonPhrase = $response->reason();


        header(sprintf(
            'HTTP/%s %d%s',
            $response->protocol(),

            $response->status(),

            ($reasonPhrase ? ' ' . $reasonPhrase : '')
        ));
    }

    /**
     * @param ResponseInterface $response
     */
    private function emitHeaders(ResponseInterface $response)
    {
        foreach ($response->headers() as $header => $values) {

            $name  = $this->filterHeader($header);
            $first = true;
            foreach ($values as $value) {
                header(sprintf(
                    '%s: %s',
                    $name,
                    $value
                ), $first);
                $first = false;
            }
        }
    }

    /**
     * @param ResponseInterface $response
     * @param                   $maxBufferLevel
     */
    private function emitBody(ResponseInterface $response, $maxBufferLevel)
    {
        if (null === $maxBufferLevel) {
            $maxBufferLevel = ob_get_level();
        }

        while (ob_get_level() > $maxBufferLevel) {
            ob_end_flush();
        }

        echo $response->body();
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
    }

    /**
     * Filter a header name to wordcase
     *
     * @param string $header
     *
     * @return string
     */
    private function filterHeader($header)
    {
        $filtered = str_replace('-', ' ', $header);
        $filtered = ucwords($filtered);

        return str_replace(' ', '-', $filtered);
    }
}


1		<?php
2
3		namespace Mosaic\Http\Emitters;
4
5		use Mosaic\Http\Emitter;
6		use Psr\Http\Message\ResponseInterface;
7		use RuntimeException;
8
9		class SapiEmitter implements Emitter
10		{
11		/**
12		* @param ResponseInterface $response
13		* @param null $maxBufferLevel
14		*
15		* @throws RuntimeException
16		*/
17	7	public function emit(ResponseInterface $response, $maxBufferLevel = null)
18		{
19	7	if (headers_sent()) {
20	1	throw new RuntimeException('Unable to emit response. Headers were already sent');
21		}
22
23	6	if (!$response->hasHeader('Content-Length')) {
24		// PSR-7 indicates int OR null for the stream size; for null values,
25		// we will not auto-inject the Content-Length.
26	2	if (null !== $response->size()) {
		0 ignored issues – show Bug introduced 2016-03-15 11:35 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a concrete implementation and not the interface `Psr\Http\Message\ResponseInterface` as the method `size()` does only exist in the following implementations of said interface: `Mosaic\Http\Adapters\Psr7\Response`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string */ public function getDisplayName(); } Loading history...
27	1	$response = $response->addHeader('Content-Length', (string) $response->size());
28		}
29		}
30
31	6	$this->emitStatus($response);
32	6	$this->emitHeaders($response);
33	6	$this->emitBody($response, $maxBufferLevel);
34	6	}
35
36		/**
37		* @param Response $response
38		*/
39	6	private function emitStatus(ResponseInterface $response)
40		{
41	6	$reasonPhrase = $response->reason();
		0 ignored issues – show Bug introduced 2016-03-15 11:35 UTC by Report Bug Copy Issue Report Show Similar Issues like this The method `reason()` does not exist on `Psr\Http\Message\ResponseInterface`. Did you maybe mean `getReasonPhrase()`? This check marks calls to methods that do not seem to exist on an object. This is most likely the result of a method being renamed without all references to it being renamed likewise. Loading history...
42
43	6	header(sprintf(
44	6	'HTTP/%s %d%s',
45	6	$response->protocol(),
		0 ignored issues – show Bug introduced 2016-03-15 11:35 UTC by Report Bug Copy Issue Report Show Similar Issues like this The method `protocol()` does not exist on `Psr\Http\Message\ResponseInterface`. Did you maybe mean `getProtocolVersion()`? This check marks calls to methods that do not seem to exist on an object. This is most likely the result of a method being renamed without all references to it being renamed likewise. Loading history...
46	6	$response->status(),
		0 ignored issues – show Bug introduced 2016-03-15 11:35 UTC by Report Bug Copy Issue Report Show Similar Issues like this The method `status()` does not exist on `Psr\Http\Message\ResponseInterface`. Did you maybe mean `getStatusCode()`? This check marks calls to methods that do not seem to exist on an object. This is most likely the result of a method being renamed without all references to it being renamed likewise. Loading history...
47	6	($reasonPhrase ? ' ' . $reasonPhrase : '')
48		));
49	6	}
50
51		/**
52		* @param ResponseInterface $response
53		*/
54	6	private function emitHeaders(ResponseInterface $response)
55		{
56	6	foreach ($response->headers() as $header => $values) {
		0 ignored issues – show Bug introduced 2016-03-15 11:35 UTC by Report Bug Copy Issue Report Show Similar Issues like this The method `headers()` does not exist on `Psr\Http\Message\ResponseInterface`. Did you maybe mean `getHeaders()`? This check marks calls to methods that do not seem to exist on an object. This is most likely the result of a method being renamed without all references to it being renamed likewise. Loading history...
57	1	$name = $this->filterHeader($header);
58	1	$first = true;
59	1	foreach ($values as $value) {
60	1	header(sprintf(
61	1	'%s: %s',
62		$name,
63		$value
64		), $first);
65	1	$first = false;
66		}
67		}
68	6	}
69
70		/**
71		* @param ResponseInterface $response
72		* @param $maxBufferLevel
73		*/
74	6	private function emitBody(ResponseInterface $response, $maxBufferLevel)
75		{
76	6	if (null === $maxBufferLevel) {
77	4	$maxBufferLevel = ob_get_level();
78		}
79
80	6	while (ob_get_level() > $maxBufferLevel) {
81	1	ob_end_flush();
82		}
83
84	6	echo $response->body();
		0 ignored issues – show Bug introduced 2016-03-15 11:35 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a concrete implementation and not the interface `Psr\Http\Message\ResponseInterface` as the method `body()` does only exist in the following implementations of said interface: `Mosaic\Http\Adapters\Psr7\Response`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string */ public function getDisplayName(); } Loading history...
85	6	}
86
87		/**
88		* Filter a header name to wordcase
89		*
90		* @param string $header
91		*
92		* @return string
93		*/
94	1	private function filterHeader($header)
95		{
96	1	$filtered = str_replace('-', ' ', $header);
97	1	$filtered = ucwords($filtered);
98
99	1	return str_replace(' ', '-', $filtered);
100		}
101		}
102

Mosaic / Http

Issues (8)

Security Analysis no request data

src/Emitters/SapiEmitter.php (6 issues)

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