CompletePurchaseResponse::calculateHash() - Code Metrics - Inspection of "minor" - hiqdev/omnipay-paxum - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 8fc956...1ff290 )

by Andrii

created 2015-12-21 17:19 UTC

CompletePurchaseResponse::calculateHash() B

↳ Parent: CompletePurchaseResponse

Complexity

Conditions	5
Paths	4

Size

Total Lines	35
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	1	Features	0

Metric	Value
c	2
b	1
f	0
dl	0
loc	35
rs	8.439
cc	5
eloc	10
nc	4
nop	0

<?php

/*
 * Paxum plugin for PHP merchant library
 *
 * @link      https://github.com/hiqdev/omnipay-paxum
 * @package   omnipay-paxum
 * @license   MIT
 * @copyright Copyright (c) 2015, HiQDev (http://hiqdev.com/)
 */

namespace Omnipay\Paxum\Message;

use Omnipay\Common\Exception\InvalidResponseException;
use Omnipay\Common\Message\AbstractResponse;
use Omnipay\Common\Message\RequestInterface;

/**
 * Paxum Complete Purchase Response.
 */
class CompletePurchaseResponse extends AbstractResponse
{
    /**
     * @param RequestInterface $request
     * @param array $data
     */
    public function __construct(RequestInterface $request, $data)
    {
        $this->request = $request;
        $this->data    = $data;

        if ($this->getTransactionStatus() !== 'done') {
            throw new InvalidResponseException('Transaction not done');
        }

        if ($this->getHash() !== $this->calculateHash()) {
            throw new InvalidResponseException('Invalid hash');
        }

        if ($this->request->getTestMode() !== $this->getTestMode()) {
            throw new InvalidResponseException('Invalid test mode');
        }
    }

    /**
     * {@inheritdoc}
     */
    public function isSuccessful()
    {
        return true;
    }

    /**
     * {@inheritdoc}
     * @return string
     */
    public function getTransactionId()
    {
        return $this->data['item_id'];
    }

    /**
     * {@inheritdoc}
     * @return string
     */
    public function getTransactionReference()
    {
        return $this->data['transaction_id'];
    }

    public function getTransactionStatus()
    {
        return $this->data['transaction_status'];
    }

    /**
     * {@inheritdoc}
     * @return string
     */
    public function getAmount()
    {
        return $this->data['transaction_amount'];
    }

    /**
     * Get payment time.
     *
     * @return string
     */
    public function getTime()
    {
        return Helper::isotime($this->data['transaction_date'] . ' EST');
    }

    /**
     * Get test mode.
     *
     * @return string
     */
    public function getTestMode()
    {
        return $this->data['sandbox'] === 'ON';
    }

    /**
     * Get payer info - name, username and id.
     *
     * @return string
     */
    public function getPayer()
    {
        return $this->data['buyer_name'] . '/' . $this->data['buyer_username'] . '/' . $this->data['buyer_id'];
    }

    /**
     * Get hash from request.
     *
     * @return string
     */
    public function getHash()
    {
        return $this->data['key'];
    }

    /**
     * Calculate hash to validate incoming IPN notifications.
     *
     * @return string
     */
    public function calculateHash()
    {
        // raw POST request
        $raw = file_get_contents('php://input');
        // removing trailing '&key=...'
        $fields = substr($raw, 0, strpos($raw, '&key='));
        // this is the documentation way
        $supposed_hash = md5($fields . $this->request->getSecret());
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.
    }
}

        // this is how they actually get it
        $kvs = '';
        foreach ($this->data as $k=>$v) {
            if ($k !== 'key' && $k !== 'username') {
                $kvs  .= ($kvs ? '&' : '') . "$k=$v";
            }
        }
        $hash = md5($kvs);

        /* Testing facility

        throw new \Exception(
            var_export([
                'key'    => $this->getHash(),
                'fields' => $fields,
                'secret' => $this->request->getSecret(),
                'hash'   => $hash,
                'h2'     => md5($fields),
                'h3'     => md5($fields . $this->request->getSecret()),
                'kvs'    => $kvs,
                'kh3'    => md5($kvs),
                'kh4'    => md5($kvs . $this->request->getSecret()),
            ], true)
        );*/

        return $hash;
    }
}


1			<?php
2
3			/*
4			* Paxum plugin for PHP merchant library
5			*
6			* @link https://github.com/hiqdev/omnipay-paxum
7			* @package omnipay-paxum
8			* @license MIT
9			* @copyright Copyright (c) 2015, HiQDev (http://hiqdev.com/)
10			*/
11
12			namespace Omnipay\Paxum\Message;
13
14			use Omnipay\Common\Exception\InvalidResponseException;
15			use Omnipay\Common\Message\AbstractResponse;
16			use Omnipay\Common\Message\RequestInterface;
17
18			/**
19			* Paxum Complete Purchase Response.
20			*/
21			class CompletePurchaseResponse extends AbstractResponse
22			{
23			/**
24			* @param RequestInterface $request
25			* @param array $data
26			*/
27			public function __construct(RequestInterface $request, $data)
28			{
29			$this->request = $request;
30			$this->data = $data;
31
32			if ($this->getTransactionStatus() !== 'done') {
33			throw new InvalidResponseException('Transaction not done');
34			}
35
36			if ($this->getHash() !== $this->calculateHash()) {
37			throw new InvalidResponseException('Invalid hash');
38			}
39
40			if ($this->request->getTestMode() !== $this->getTestMode()) {
41			throw new InvalidResponseException('Invalid test mode');
42			}
43			}
44
45			/**
46			* {@inheritdoc}
47			*/
48			public function isSuccessful()
49			{
50			return true;
51			}
52
53			/**
54			* {@inheritdoc}
55			* @return string
56			*/
57			public function getTransactionId()
58			{
59			return $this->data['item_id'];
60			}
61
62			/**
63			* {@inheritdoc}
64			* @return string
65			*/
66			public function getTransactionReference()
67			{
68			return $this->data['transaction_id'];
69			}
70
71			public function getTransactionStatus()
72			{
73			return $this->data['transaction_status'];
74			}
75
76			/**
77			* {@inheritdoc}
78			* @return string
79			*/
80			public function getAmount()
81			{
82			return $this->data['transaction_amount'];
83			}
84
85			/**
86			* Get payment time.
87			*
88			* @return string
89			*/
90			public function getTime()
91			{
92			return Helper::isotime($this->data['transaction_date'] . ' EST');
93			}
94
95			/**
96			* Get test mode.
97			*
98			* @return string
99			*/
100			public function getTestMode()
101			{
102			return $this->data['sandbox'] === 'ON';
103			}
104
105			/**
106			* Get payer info - name, username and id.
107			*
108			* @return string
109			*/
110			public function getPayer()
111			{
112			return $this->data['buyer_name'] . '/' . $this->data['buyer_username'] . '/' . $this->data['buyer_id'];
113			}
114
115			/**
116			* Get hash from request.
117			*
118			* @return string
119			*/
120			public function getHash()
121			{
122			return $this->data['key'];
123			}
124
125			/**
126			* Calculate hash to validate incoming IPN notifications.
127			*
128			* @return string
129			*/
130			public function calculateHash()
131			{
132			// raw POST request
133			$raw = file_get_contents('php://input');
134			// removing trailing '&key=...'
135			$fields = substr($raw, 0, strpos($raw, '&key='));
136			// this is the documentation way
137			$supposed_hash = md5($fields . $this->request->getSecret());
			0 ignored issues – show Bug introduced 2015-12-18 18:42 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `Omnipay\Common\Message\RequestInterface` as the method `getSecret()` does only exist in the following implementations of said interface: `Omnipay\Paxum\Message\AbstractRequest`, `Omnipay\Paxum\Message\CompletePurchaseRequest`, `Omnipay\Paxum\Message\PurchaseRequest`. 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... Unused Code introduced 2015-12-21 17:21 UTC by Report Bug Copy Issue Report `$supposed_hash` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
138
139			// this is how they actually get it
140			$kvs = '';
141			foreach ($this->data as $k=>$v) {
142			if ($k !== 'key' && $k !== 'username') {
143			$kvs .= ($kvs ? '&' : '') . "$k=$v";
144			}
145			}
146			$hash = md5($kvs);
147
148			/* Testing facility
			0 ignored issues – show Unused Code Comprehensibility introduced 2015-12-21 17:21 UTC by Report Bug Copy Issue Report `56%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
149			throw new \Exception(
150			var_export([
151			'key' => $this->getHash(),
152			'fields' => $fields,
153			'secret' => $this->request->getSecret(),
154			'hash' => $hash,
155			'h2' => md5($fields),
156			'h3' => md5($fields . $this->request->getSecret()),
157			'kvs' => $kvs,
158			'kh3' => md5($kvs),
159			'kh4' => md5($kvs . $this->request->getSecret()),
160			], true)
161			);*/
162
163			return $hash;
164			}
165			}
166

hiqdev / omnipay-paxum

Push — master ( 8fc956...1ff290 )

CompletePurchaseResponse::calculateHash() B

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