authenticateAsInstallation()   A
last analyzed

Complexity

Conditions 1
Paths 1

Size

Total Lines 7
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 7
rs 9.4285
c 0
b 0
f 0
cc 1
eloc 4
nc 1
nop 3
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<?php
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/*
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 * This file is part of UnMarkDocs.
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 *
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 * Copyright (c) Miguel Piedrafita - All Rights Reserved
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 *
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 * Unauthorized copying of this file, via any medium is strictly prohibited
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 * Proprietary and confidential
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 * Written by Miguel Piedrafita <[email protected]>
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 */
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namespace M1guelpf\Integration;
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use Github\Client as GitHub;
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use Lcobucci\JWT\Token as JWT;
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trait AuthenticatesApplications
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{
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    /**
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     * Authenticates as an installation.
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     *
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     * @param int     $installation_id
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     * @param GitHub  $github
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     * @param JWT     $jwt
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     *
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     * @return GitHub
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     */
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    protected function authenticateAsInstallation(int $installation_id, GitHub $github, JWT $jwt) : GitHub
0 ignored issues
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Unused Code introduced by
The parameter $jwt is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

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    {
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        $token = $github->api('apps')->createInstallationToken($installation_id);
0 ignored issues
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Bug introduced by
It seems like you code against a concrete implementation and not the interface Github\Api\ApiInterface as the method createInstallationToken() does only exist in the following implementations of said interface: Github\Api\Apps, Github\Api\Integrations.

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

  1. Change the type-hint for the parameter:

    class AuthSystem
    {
        public function authenticate(MyUser $user) { /* ... */ }
    }
    
  2. 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.
  1. Add the method to the interface:

    interface User
    {
        /** @return string */
        public function getPassword();
    
        /** @return string */
        public function getDisplayName();
    }
    
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        $github->authenticate($token['token'], null, GitHub::AUTH_HTTP_TOKEN);
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        return $github;
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    }
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    /**
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     * Authenticates as an application.
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     *
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     * @param GitHub  $github
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     * @param JWT     $jwt
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     *
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     * @return GitHub
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     */
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    protected function authenticateAsApplication(GitHub $github, JWT $jwt) : GitHub
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    {
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        $github->authenticate($jwt, null, GitHub::AUTH_JWT);
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        return $github;
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    }
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}
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