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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\XML\Type; |
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use DOMElement; |
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use SimpleSAML\XML\Assert\Assert; |
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use SimpleSAML\XML\Exception\SchemaViolationException; |
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use SimpleSAML\XML\Type\{AnyURIValue, NCNameValue}; |
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use function preg_match; |
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/** |
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* @package simplesaml/xml-common |
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*/ |
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class QNameValue extends AbstractValueType |
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{ |
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protected ?AnyURIValue $namespaceURI; |
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protected ?NCNameValue $namespacePrefix; |
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protected NCNameValue $localName; |
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private static string $qname_regex = '/^ |
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(?: |
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\{ # Match a literal { |
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(\S+) # Match one or more non-whitespace character |
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\} # Match a literal } |
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(?: |
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([\w_][\w.-]*) # Match a-z or underscore followed by any word-character, dot or dash |
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: # Match a literal : |
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)? |
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)? # Namespace and prefix are optional |
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([\w_][\w.-]*) # Match a-z or underscore followed by any word-character, dot or dash |
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$/Dimx'; |
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/** |
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* Sanitize the value. |
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* |
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* @param string $value The unsanitized value |
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* @return string |
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*/ |
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protected function sanitizeValue(string $value): string |
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{ |
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return static::collapseWhitespace(static::normalizeWhitespace($value)); |
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} |
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/** |
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* Validate the value. |
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* |
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* @param string $value |
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* @throws \SimpleSAML\XML\Exception\SchemaViolationException on failure |
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* @return void |
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*/ |
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protected function validateValue(string $value): void |
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{ |
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$qName = $this->sanitizeValue($value); |
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/** |
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* Split our custom format of {<namespaceURI>}<prefix>:<localName> into individual parts |
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*/ |
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$result = preg_match( |
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self::$qname_regex, |
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$qName, |
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$matches, |
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PREG_UNMATCHED_AS_NULL, |
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); |
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if ($result && count($matches) === 4) { |
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list($qName, $namespaceURI, $namespacePrefix, $localName) = $matches; |
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$this->namespaceURI = ($namespaceURI !== null) ? AnyURIValue::fromString($namespaceURI) : null; |
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$this->namespacePrefix = ($namespacePrefix !== null) ? NCNameValue::fromString($namespacePrefix) : null; |
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$this->localName = NCNameValue::fromString($localName); |
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} else { |
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throw new SchemaViolationException(sprintf('\'%s\' is not a valid xs:QName.', $qName)); |
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} |
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} |
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/** |
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* Get the value. |
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* |
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* @return string |
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*/ |
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public function getValue(): string |
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{ |
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return $this->getNamespacePrefix() . ':' . $this->getLocalName(); |
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} |
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/** |
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* Get the namespaceURI for this qualified name. |
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* |
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* @return \SimpleSAML\XML\Type\AnyURIValue|null |
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*/ |
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public function getNamespaceURI(): ?AnyURIValue |
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{ |
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return $this->namespaceURI; |
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} |
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/** |
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* Get the namespace-prefix for this qualified name. |
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* |
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* @return \SimpleSAML\XML\Type\NCNameValue|null |
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*/ |
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public function getNamespacePrefix(): ?NCNameValue |
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{ |
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return $this->namespacePrefix; |
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} |
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/** |
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* Get the local name for this qualified name. |
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* |
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* @return \SimpleSAML\XML\Type\NCNameValue |
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*/ |
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public function getLocalName(): NCNameValue |
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{ |
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return $this->localName; |
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} |
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/** |
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* @param \SimpleSAML\XML\Type\NCNameValue $localName |
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* @param \SimpleSAML\XML\Type\AnyURIValue|null $namespaceURI |
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* @param \SimpleSAML\XML\Type\NCNameValue|null $namespacePrefix |
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* @return static |
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*/ |
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public static function fromParts( |
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NCNameValue $localName, |
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?AnyURIValue $namespaceURI, |
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?NCNameValue $namespacePrefix, |
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): static { |
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if ($namespaceURI === null) { |
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// If we don't have a namespace, we can't have a prefix either |
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Assert::null($namespacePrefix->getValue(), SchemaViolationException::class); |
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return new static($localName->getValue()); |
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} |
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return new static( |
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'{' . $namespaceURI->getValue() . '}' |
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. ($namespacePrefix ? ($namespacePrefix->getValue() . ':') : '') |
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. $localName, |
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); |
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} |
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/** |
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* @param string $qName |
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*/ |
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public static function fromDocument( |
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string $qName, |
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DOMElement $element, |
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): static { |
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$namespacePrefix = null; |
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if (str_contains($qName, ':')) { |
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list($namespacePrefix, $localName) = explode(':', $qName, 2); |
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} else { |
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// No prefix |
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$localName = $qName; |
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} |
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// Will return the default namespace (if any) when prefix is NULL |
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$namespaceURI = $element->lookupNamespaceUri($namespacePrefix); |
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return new static('{' . $namespaceURI . '}' . $namespacePrefix . ':' . $localName); |
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} |
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} |
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simplesamlphp /
xml-common
Loading history...
Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: