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<?php |
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declare(strict_types=1); |
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namespace OCA\DAV\CardDAV\Integration; |
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use Sabre\CardDAV\IAddressBook; |
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use Sabre\DAV; |
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/** |
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* @since 19.0.0 |
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*/ |
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abstract class ExternalAddressBook implements IAddressBook, DAV\IProperties { |
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/** @var string */ |
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private const PREFIX = 'app-generated'; |
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/** |
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* @var string |
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* |
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* Double dash is a valid delimiter, |
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* because it will always split the URIs correctly: |
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* - our prefix contains only one dash and won't be split |
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* - appIds are not allowed to contain dashes as per spec: |
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* > must contain only lowercase ASCII characters and underscore |
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* - explode has a limit of three, so even if the app-generated |
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* URI has double dashes, it won't be split |
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*/ |
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private const DELIMITER = '--'; |
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/** @var string */ |
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private $appId; |
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/** @var string */ |
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private $uri; |
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/** |
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* @param string $appId |
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* @param string $uri |
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*/ |
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public function __construct(string $appId, string $uri) { |
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$this->appId = $appId; |
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$this->uri = $uri; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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final public function getName() { |
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return implode(self::DELIMITER, [ |
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self::PREFIX, |
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$this->appId, |
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$this->uri, |
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]); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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final public function setName($name) { |
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throw new DAV\Exception\MethodNotAllowed('Renaming address books is not yet supported'); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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final public function createDirectory($name) { |
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throw new DAV\Exception\MethodNotAllowed('Creating collections in address book objects is not allowed'); |
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} |
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/** |
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* Checks whether the address book uri is app-generated |
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* |
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* @param string $uri |
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* |
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* @return bool |
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*/ |
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public static function isAppGeneratedAddressBook(string $uri): bool { |
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return strpos($uri, self::PREFIX) === 0 && substr_count($uri, self::DELIMITER) >= 2; |
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} |
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/** |
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* Splits an app-generated uri into appId and uri |
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* |
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* @param string $uri |
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* |
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* @return array |
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*/ |
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public static function splitAppGeneratedAddressBookUri(string $uri): array { |
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$array = array_slice(explode(self::DELIMITER, $uri, 3), 1); |
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// Check the array has expected amount of elements |
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// and none of them is an empty string |
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if (\count($array) !== 2 || \in_array('', $array, true)) { |
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throw new \InvalidArgumentException('Provided address book uri was not app-generated'); |
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} |
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return $array; |
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} |
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/** |
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* Checks whether a address book name the user wants to create violates |
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* the reserved name for URIs |
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* |
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* @param string $uri |
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* |
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* @return bool |
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*/ |
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public static function doesViolateReservedName(string $uri): bool { |
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return strpos($uri, self::PREFIX) === 0; |
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} |
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} |
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nextcloud /
server
