8000 [Validator, FrameworkBundle] Add prevent DNS lookup option to EmailValidator by patrick-mcdougle · Pull Request #18142 · symfony/symfony · GitHub
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[Validator, FrameworkBundle] Add prevent DNS lookup option to EmailValidator #18142

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[Validator, FrameworkBundle] Add prevent DNS lookup option to EmailValidator #18142

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e963fc0
Introduce flag to prevent DNS lookups
patrick-mcdougle Mar 12, 2016
b9070e9
Utilize the prevent DNS lookup option
patrick-mcdougle Mar 12, 2016
4d10fca
Address PR Comments
patrick-mcdougle Mar 14, 2016
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Introduce flag to prevent DNS lookups
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@patrick-mcdougle
patrick-mcdougle committed Mar 12, 2016
commit e963fc027a05a4ce3660b395b22d74738aaf40ce
12 changes: 9 additions & 3 deletions src/Symfony/Component/Validator/Constraints/EmailValidator.php
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Original file line number Diff line number Diff line change
Expand Up @@ -26,9 +26,15 @@ class EmailValidator extends ConstraintValidator
*/
private $isStrict;

public function __construct($strict = false)
/**
* @var bool
*/
private $preventDNSLookups;

public function __construct($strict = false, $preventDNSLookups = false)
{
$this->isStrict = $strict;
$this->preventDNSLookups = $preventDNSLookups;
}

/**
Expand Down Expand Up @@ -81,7 +87,7 @@ public function validate($value, Constraint $constraint)
$host = substr($value, strpos($value, '@') + 1);

// Check for host DNS resource records
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This could be a little more DRY if there were just a single if (!$this->preventDNSLookups) conditional wrapping both the MX section and the hostname section. It would also keep the original if statements uncluttered by this new logic.

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Great suggestion! I'll make this change when I get back to my computer.

if ($constraint->checkMX) {
if (!$this->preventDNSLookups && $constraint->checkMX) {
if (!$this->checkMX($host)) {
$this->context->buildViolation($constraint->message)
->setParameter('{{ value }}', $this->formatValue($value))
Expand All @@ -92,7 +98,7 @@ public function validate($value, Constraint $constraint)
return;
}

if ($constraint->checkHost && !$this->checkHost($host)) {
if (!$this->preventDNSLookups && $constraint->checkHost && !$this->checkHost($host)) {
$this->context->buildViolation($constraint->message)
->setParameter('{{ value }}', $this->formatValue($value))
->setCode(Email::HOST_CHECK_FAILED_ERROR)
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0