Issues in MailgunHelper.php (master) - Issues in master - lekoala/silverstripe-mailgun - Measure and Improve Code Quality continuously with Scrutinizer

Issues (82)

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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.

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code/MailgunHelper.php (8 issues)

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<?php

namespace LeKoala\Mailgun;

use \Exception;
use Mailgun\Mailgun;
use SilverStripe\Control\Director;
use SilverStripe\Core\Environment;
use SilverStripe\Control\Email\Email;
use SilverStripe\Control\Email\Mailer;
use SilverStripe\SiteConfig\SiteConfig;
use SilverStripe\Core\Injector\Injector;
use LeKoala\Mailgun\MailgunSwiftTransport;
use SilverStripe\Core\Config\Configurable;
use SilverStripe\Control\Email\SwiftMailer;

/**
 * This configurable class helps decoupling the api client from SilverStripe
 */
class MailgunHelper
{
    use Configurable;

    const DEFAULT_ENDPOINT = 'https://api.mailgun.net/v3';
    const EU_ENDPOINT = 'https://api.eu.mailgun.net/v3';

    /**
     * Client instance
     *
     * @var Mailgun
     */
    protected static $client;

    /**
     * Get the mailer instance
     *
     * @return SilverStripe\Control\Email\SwiftMailer
     */
    public static function getMailer()
    {
        return Injector::inst()->get(Mailer::class);
    }

    /**
     * Get the api client instance
     * @return Mailgun
     * @throws Exception
     */
    public static function getClient()
    {
        if (!self::$client) {
            $key = self::config()->api_key;
            if (empty($key)) {
                throw new \Exception("api_key is not configured for " . __class__);
            }
            $endpoint = self::DEFAULT_ENDPOINT;
            if (self::config()->endpoint) {
                $endpoint = self::config()->endpoint;
            }
            self::$client = Mailgun::create($key, $endpoint);

        }
        return self::$client;

    }

    /**
     * Get the log folder and create it if necessary
     *
     * @return string
     */
    public static function getLogFolder()
    {
        $logFolder = BASE_PATH . '/' . self::config()->log_folder;
        if (!is_dir($logFolder)) {
            mkdir($logFolder, 0755, true);
        }
        return $logFolder;
    }

    /**
     * @return string
     */
    public static function getDomain()
    {
        if ($domain = self::config()->domain) {
            return $domain;
        }
        if ($domain = Environment::getEnv('MAILGUN_DOMAIN')) {
            return $domain;
        }
        throw new Exception("MAILGUN_DOMAIN not set");
    }

    /**
     * Process environment variable to configure this module
     *
     * @return void
     */
    public static function init()
    {
        // Regular api key used for sending emails
        $api_key = Environment::getEnv('MAILGUN_API_KEY');
        if ($api_key) {
            self::config()->api_key = $api_key;
        }

        $domain = Environment::getEnv('MAILGUN_DOMAIN');
        if ($domain) {
            self::config()->domain = $domain;
        }

        // Set a custom endpoint
        $endpoint = Environment::getEnv('MAILGUN_ENDPOINT');
        if ($endpoint) {
            self::config()->endpoint = $endpoint;
        }

        // Disable sending
        $sending_disabled = Environment::getEnv('MAILGUN_SENDING_DISABLED');
        if ($sending_disabled) {
            self::config()->disable_sending = $sending_disabled;
        }

        // Log all outgoing emails (useful for testing)
        $enable_logging = Environment::getEnv('MAILGUN_ENABLE_LOGGING');
        if ($enable_logging) {
            self::config()->enable_logging = $enable_logging;
        }

        // We have a key, we can register the transport
        if (self::config()->api_key) {
            self::registerTransport();
        }
    }

    /**
     * Register the transport with the client
     *
     * @return SilverStripe\Control\Email\SwiftMailer The updated swift mailer
     * @throws Exception
     */
    public static function registerTransport()
    {
        $client = self::getClient();
        $mailer = self::getMailer();
        if (!$mailer instanceof SwiftMailer) {
            throw new Exception("Mailer must be an instance of " . SwiftMailer::class . " instead of " . get_class($mailer));
        }
        $transport = new MailgunSwiftTransport($client);
        $newSwiftMailer = $mailer->getSwiftMailer()->newInstance($transport);
        $mailer->setSwiftMailer($newSwiftMailer);
        return $mailer;
    }


    /**
     * Resolve default send from address
     *
     * Keep in mind that an email using send() without a from
     * will inject the admin_email. Therefore, SiteConfig
     * will not be used
     *
     * @param string $from
     * @param bool $createDefault
     * @return string
     */
    public static function resolveDefaultFromEmail($from = null, $createDefault = true)
    {
        $original_from = $from;
        if (!empty($from)) {

            // If we have a sender, validate its email
            $from = EmailUtils::get_email_from_rfc_email($from);
            if (filter_var($from, FILTER_VALIDATE_EMAIL)) {
                return $original_from;
            }
        }
        // Look in siteconfig for default sender
        $config = SiteConfig::current_site_config();
        $config_field = self::config()->siteconfig_from;
        if ($config_field && !empty($config->$config_field)) {
            return $config->$config_field;
        }
        // Use admin email
        if ($admin = Email::config()->admin_email) {
            return $admin;
        }
        // If we still don't have anything, create something based on the domain
        if ($createDefault) {
            return self::createDefaultEmail();
        }
        return false;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * Resolve default send to address
     *
     * @param string $to
     * @return string
     */
    public static function resolveDefaultToEmail($to = null)
    {
        // In case of multiple recipients, do not validate anything
        if (is_array($to) || strpos($to, ',') !== false) {
            return $to;

        }
        $original_to = $to;
        if (!empty($to)) {

            $to = EmailUtils::get_email_from_rfc_email($to);
            if (filter_var($to, FILTER_VALIDATE_EMAIL)) {
                return $original_to;
            }
        }
        $config = SiteConfig::current_site_config();
        $config_field = self::config()->siteconfig_to;
        if ($config_field && !empty($config->$config_field)) {
            return $config->$config_field;
        }
        if ($admin = Email::config()->admin_email) {
            return $admin;
        }
        return false;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * Create a sensible default address based on domain name
     *
     * @return string
     */
    public static function createDefaultEmail()
    {
        $fulldom = Director::absoluteBaseURL();
        $host = parse_url($fulldom, PHP_URL_HOST);
        if (!$host) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
            $host = 'localhost';
        }
        $dom = str_replace('www.', '', $host);

        return 'postmaster@' . $dom;
    }
}


1		<?php
2
3		namespace LeKoala\Mailgun;
4
5		use \Exception;
6		use Mailgun\Mailgun;
7		use SilverStripe\Control\Director;
8		use SilverStripe\Core\Environment;
9		use SilverStripe\Control\Email\Email;
10		use SilverStripe\Control\Email\Mailer;
11		use SilverStripe\SiteConfig\SiteConfig;
12		use SilverStripe\Core\Injector\Injector;
13		use LeKoala\Mailgun\MailgunSwiftTransport;
14		use SilverStripe\Core\Config\Configurable;
15		use SilverStripe\Control\Email\SwiftMailer;
16
17		/**
18		* This configurable class helps decoupling the api client from SilverStripe
19		*/
20		class MailgunHelper
21		{
22		use Configurable;
23
24		const DEFAULT_ENDPOINT = 'https://api.mailgun.net/v3';
25		const EU_ENDPOINT = 'https://api.eu.mailgun.net/v3';
26
27		/**
28		* Client instance
29		*
30		* @var Mailgun
31		*/
32		protected static $client;
33
34		/**
35		* Get the mailer instance
36		*
37		* @return SilverStripe\Control\Email\SwiftMailer
38		*/
39		public static function getMailer()
40		{
41		return Injector::inst()->get(Mailer::class);
42		}
43
44		/**
45		* Get the api client instance
46		* @return Mailgun
47		* @throws Exception
48		*/
49		public static function getClient()
50		{
51		if (!self::$client) {
52		$key = self::config()->api_key;
53		if (empty($key)) {
54		throw new \Exception("api_key is not configured for " . __class__);
55		}
56		$endpoint = self::DEFAULT_ENDPOINT;
57		if (self::config()->endpoint) {
58		$endpoint = self::config()->endpoint;
59		}
60		self::$client = Mailgun::create($key, $endpoint);
		0 ignored issues – show Documentation Bug introduced 2019-11-21 10:04 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like `\Mailgun\Mailgun::create($key, $endpoint)` of type `object<self>` is incompatible with the declared type `object<Mailgun\Mailgun>` of property `$client`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
61		}
62		return self::$client;
		0 ignored issues – show Bug Compatibility introduced 2019-11-21 10:04 UTC by Report Bug Copy Issue Report Show Similar Issues like this The expression `self::$client;` of type `self\|Mailgun\Mailgun` adds the type `self` to the return on line 62 which is incompatible with the return type documented by `LeKoala\Mailgun\MailgunHelper::getClient` of type `Mailgun\Mailgun`. Loading history...
63		}
64
65		/**
66		* Get the log folder and create it if necessary
67		*
68		* @return string
69		*/
70		public static function getLogFolder()
71		{
72		$logFolder = BASE_PATH . '/' . self::config()->log_folder;
73		if (!is_dir($logFolder)) {
74		mkdir($logFolder, 0755, true);
75		}
76		return $logFolder;
77		}
78
79		/**
80		* @return string
81		*/
82		public static function getDomain()
83		{
84		if ($domain = self::config()->domain) {
85		return $domain;
86		}
87		if ($domain = Environment::getEnv('MAILGUN_DOMAIN')) {
88		return $domain;
89		}
90		throw new Exception("MAILGUN_DOMAIN not set");
91		}
92
93		/**
94		* Process environment variable to configure this module
95		*
96		* @return void
97		*/
98		public static function init()
99		{
100		// Regular api key used for sending emails
101		$api_key = Environment::getEnv('MAILGUN_API_KEY');
102		if ($api_key) {
103		self::config()->api_key = $api_key;
104		}
105
106		$domain = Environment::getEnv('MAILGUN_DOMAIN');
107		if ($domain) {
108		self::config()->domain = $domain;
109		}
110
111		// Set a custom endpoint
112		$endpoint = Environment::getEnv('MAILGUN_ENDPOINT');
113		if ($endpoint) {
114		self::config()->endpoint = $endpoint;
115		}
116
117		// Disable sending
118		$sending_disabled = Environment::getEnv('MAILGUN_SENDING_DISABLED');
119		if ($sending_disabled) {
120		self::config()->disable_sending = $sending_disabled;
121		}
122
123		// Log all outgoing emails (useful for testing)
124		$enable_logging = Environment::getEnv('MAILGUN_ENABLE_LOGGING');
125		if ($enable_logging) {
126		self::config()->enable_logging = $enable_logging;
127		}
128
129		// We have a key, we can register the transport
130		if (self::config()->api_key) {
131		self::registerTransport();
132		}
133		}
134
135		/**
136		* Register the transport with the client
137		*
138		* @return SilverStripe\Control\Email\SwiftMailer The updated swift mailer
139		* @throws Exception
140		*/
141		public static function registerTransport()
142		{
143		$client = self::getClient();
144		$mailer = self::getMailer();
145		if (!$mailer instanceof SwiftMailer) {
146		throw new Exception("Mailer must be an instance of " . SwiftMailer::class . " instead of " . get_class($mailer));
147		}
148		$transport = new MailgunSwiftTransport($client);
149		$newSwiftMailer = $mailer->getSwiftMailer()->newInstance($transport);
150		$mailer->setSwiftMailer($newSwiftMailer);
151		return $mailer;
152		}
153
154
155		/**
156		* Resolve default send from address
157		*
158		* Keep in mind that an email using send() without a from
159		* will inject the admin_email. Therefore, SiteConfig
160		* will not be used
161		*
162		* @param string $from
163		* @param bool $createDefault
164		* @return string
165		*/
166		public static function resolveDefaultFromEmail($from = null, $createDefault = true)
167		{
168		$original_from = $from;
169	View Code Duplication	if (!empty($from)) {
		0 ignored issues – show Duplication introduced 2019-11-21 10:04 UTC by Report Bug Copy Issue Report Show Similar Issues like this This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
170		// If we have a sender, validate its email
171		$from = EmailUtils::get_email_from_rfc_email($from);
172		if (filter_var($from, FILTER_VALIDATE_EMAIL)) {
173		return $original_from;
174		}
175		}
176		// Look in siteconfig for default sender
177		$config = SiteConfig::current_site_config();
178		$config_field = self::config()->siteconfig_from;
179		if ($config_field && !empty($config->$config_field)) {
180		return $config->$config_field;
181		}
182		// Use admin email
183		if ($admin = Email::config()->admin_email) {
184		return $admin;
185		}
186		// If we still don't have anything, create something based on the domain
187		if ($createDefault) {
188		return self::createDefaultEmail();
189		}
190		return false;
		0 ignored issues – show Bug Best Practice introduced 2019-11-21 10:04 UTC by Report Bug Copy Issue Report Show Similar Issues like this The return type of `return false;` (`false`) is incompatible with the return type documented by `LeKoala\Mailgun\MailgunH...resolveDefaultFromEmail` of type `string`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
191		}
192
193		/**
194		* Resolve default send to address
195		*
196		* @param string $to
197		* @return string
198		*/
199		public static function resolveDefaultToEmail($to = null)
200		{
201		// In case of multiple recipients, do not validate anything
202		if (is_array($to) \|\| strpos($to, ',') !== false) {
203		return $to;
		0 ignored issues – show Bug Compatibility introduced 2019-11-21 10:04 UTC by Report Bug Copy Issue Report Show Similar Issues like this The expression `return $to;` of type `string\|null\|array` is incompatible with the return type documented by `LeKoala\Mailgun\MailgunH...::resolveDefaultToEmail` of type `string` as it can also be of type `array` which is not included in this return type. Loading history...
204		}
205		$original_to = $to;
206	View Code Duplication	if (!empty($to)) {
		0 ignored issues – show Duplication introduced 2019-11-21 10:04 UTC by Report Bug Copy Issue Report Show Similar Issues like this This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
207		$to = EmailUtils::get_email_from_rfc_email($to);
208		if (filter_var($to, FILTER_VALIDATE_EMAIL)) {
209		return $original_to;
210		}
211		}
212		$config = SiteConfig::current_site_config();
213		$config_field = self::config()->siteconfig_to;
214		if ($config_field && !empty($config->$config_field)) {
215		return $config->$config_field;
216		}
217		if ($admin = Email::config()->admin_email) {
218		return $admin;
219		}
220		return false;
		0 ignored issues – show Bug Best Practice introduced 2019-11-21 10:04 UTC by Report Bug Copy Issue Report Show Similar Issues like this The return type of `return false;` (`false`) is incompatible with the return type documented by `LeKoala\Mailgun\MailgunH...::resolveDefaultToEmail` of type `string`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
221		}
222
223		/**
224		* Create a sensible default address based on domain name
225		*
226		* @return string
227		*/
228		public static function createDefaultEmail()
229		{
230		$fulldom = Director::absoluteBaseURL();
231		$host = parse_url($fulldom, PHP_URL_HOST);
232		if (!$host) {
		0 ignored issues – show Bug Best Practice introduced 2019-11-21 10:04 UTC by Report Bug Copy Issue Report Show Similar Issues like this The expression `$host` of type `string\|false` is loosely compared to `false`; this is ambiguous if the string can be empty. You might want to explicitly use `=== false` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
233		$host = 'localhost';
234		}
235		$dom = str_replace('www.', '', $host);
236
237		return 'postmaster@' . $dom;
238		}
239		}
240

lekoala / silverstripe-mailgun

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code/MailgunHelper.php (8 issues)

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