AllowedCommandValidator::validate()   A
last analyzed

Complexity

Conditions 4
Paths 4

Size

Total Lines 17
Code Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 17
c 0
b 0
f 0
rs 9.2
cc 4
eloc 9
nc 4
nop 2
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<?php
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/*
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 * This file is part of the AMFConsoleBundle.
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace AMF\ConsoleBundle\Validator\Constraints;
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use Symfony\Component\Validator\ConstraintValidator;
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use Symfony\Component\Validator\Constraint;
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use Symfony\Component\Validator\Exception\UnexpectedTypeException;
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/**
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 * Apply valid command constraint on posted command.
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 *
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 * @author Amine Fattouch <[email protected]>
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 */
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class AllowedCommandValidator extends ConstraintValidator
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{
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    /**
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     * @var array
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     */
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    private $allowedPrefixes;
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    /**
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     * Constructor class.
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     *
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     * @param array $allowedPrefixes List of allowed prefixes.
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     */
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    public function __construct(array $allowedPrefixes = [])
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    {
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        $this->allowedPrefixes = $allowedPrefixes;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function validate($property, Constraint $constraint)
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    {
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        if (!$constraint instanceof AllowedCommand) {
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            throw new UnexpectedTypeException($constraint, AllowedCommand::class);
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        }
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        $commandParts = explode(':', $property);
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        if (empty($commandParts) === false) {
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            if (in_array($commandParts[0], $this->allowedPrefixes)) {
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                return;
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            }
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        }
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        $this->context->buildViolation($constraint->message)
0 ignored issues
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Bug introduced by
It seems like you code against a concrete implementation and not the interface Symfony\Component\Valida...ecutionContextInterface as the method buildViolation() does only exist in the following implementations of said interface: Symfony\Component\Valida...ontext\ExecutionContext, Symfony\Component\Valida...\LegacyExecutionContext.

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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                        ->addViolation();
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    }
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}
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