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<?php |
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/* |
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* This file is part of the LightSAML-Core package. |
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* |
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* (c) Milos Tomic <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace LightSaml\Validator\Model\Statement; |
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use LightSaml\Error\LightSamlValidationException; |
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use LightSaml\Helper; |
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use LightSaml\Model\Assertion\AbstractStatement; |
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use LightSaml\Model\Assertion\Attribute; |
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use LightSaml\Model\Assertion\AttributeStatement; |
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use LightSaml\Model\Assertion\AuthnContext; |
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use LightSaml\Model\Assertion\AuthnStatement; |
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class StatementValidator implements StatementValidatorInterface |
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{ |
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/** |
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* @param AbstractStatement $statement |
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* |
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* @throws \LightSaml\Error\LightSamlValidationException |
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* |
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* @return void |
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*/ |
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public function validateStatement(AbstractStatement $statement) |
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{ |
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if ($statement instanceof AuthnStatement) { |
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$this->validateAuthnStatement($statement); |
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} elseif ($statement instanceof AttributeStatement) { |
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$this->validateAttributeStatement($statement); |
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} else { |
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throw new LightSamlValidationException(sprintf("Unsupported Statement type '%s'", get_class($statement))); |
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} |
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} |
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private function validateAuthnStatement(AuthnStatement $statement) |
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{ |
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if (false == $statement->getAuthnInstantTimestamp()) { |
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throw new LightSamlValidationException('AuthnStatement MUST have an AuthnInstant attribute'); |
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} |
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if (false == Helper::validateOptionalString($statement->getSessionIndex())) { |
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throw new LightSamlValidationException('SessionIndex attribute of AuthnStatement must contain at least one non-whitespace character'); |
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} |
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if ($statement->getSubjectLocality()) { |
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if (false == Helper::validateOptionalString($statement->getSubjectLocality()->getAddress())) { |
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throw new LightSamlValidationException('Address attribute of SubjectLocality must contain at least one non-whitespace character'); |
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} |
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if (false == Helper::validateOptionalString($statement->getSubjectLocality()->getDnsName())) { |
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throw new LightSamlValidationException('DNSName attribute of SubjectLocality must contain at least one non-whitespace character'); |
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} |
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} |
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if (false == $statement->getAuthnContext()) { |
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throw new LightSamlValidationException('AuthnStatement MUST have an AuthnContext element'); |
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} |
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$this->validateAuthnContext($statement->getAuthnContext()); |
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} |
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private function validateAuthnContext(AuthnContext $authnContext) |
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{ |
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if (false == $authnContext->getAuthnContextClassRef() && |
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false == $authnContext->getAuthnContextDecl() && |
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false == $authnContext->getAuthnContextDeclRef() |
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) { |
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throw new LightSamlValidationException('AuthnContext element MUST contain at least one AuthnContextClassRef, AuthnContextDecl or AuthnContextDeclRef element'); |
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} |
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if ($authnContext->getAuthnContextClassRef() && |
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$authnContext->getAuthnContextDecl() && |
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$authnContext->getAuthnContextDeclRef() |
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) { |
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throw new LightSamlValidationException('AuthnContext MUST NOT contain more than two elements.'); |
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} |
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if ($authnContext->getAuthnContextClassRef()) { |
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if (false == Helper::validateWellFormedUriString($authnContext->getAuthnContextClassRef())) { |
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throw new LightSamlValidationException('AuthnContextClassRef has a value which is not a wellformed absolute uri'); |
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} |
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} |
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if ($authnContext->getAuthnContextDeclRef()) { |
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if (false === Helper::validateWellFormedUriString($authnContext->getAuthnContextDeclRef())) { |
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throw new LightSamlValidationException('AuthnContextDeclRef has a value which is not a wellformed absolute uri'); |
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} |
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} |
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} |
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private function validateAttributeStatement(AttributeStatement $statement) |
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{ |
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if (false == $statement->getAllAttributes()) { |
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throw new LightSamlValidationException('AttributeStatement MUST contain at least one Attribute or EncryptedAttribute'); |
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} |
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foreach ($statement->getAllAttributes() as $attribute) { |
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$this->validateAttribute($attribute); |
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} |
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} |
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/** |
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* @param Attribute $attribute |
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* |
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* @throws LightSamlValidationException |
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* |
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* @return void |
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*/ |
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private function validateAttribute(Attribute $attribute) |
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{ |
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if (false == Helper::validateRequiredString($attribute->getName())) { |
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throw new LightSamlValidationException('Name attribute of Attribute element MUST contain at least one non-whitespace character'); |
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} |
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} |
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} |
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When comparing two booleans, it is generally considered safer to use the strict comparison operator.