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54 lines
1.6 KiB
PHP
54 lines
1.6 KiB
PHP
<?php
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namespace Sabre\DAVACL\PrincipalBackend;
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/**
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* Abstract Principal Backend
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*
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* Currently this class has no function. It's here for consistency and so we
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* have a non-bc-breaking way to add a default generic implementation to
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* functions we may add in the future.
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*
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* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
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* @author Evert Pot (http://evertpot.com/)
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* @license http://sabre.io/license/ Modified BSD License
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*/
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abstract class AbstractBackend implements BackendInterface {
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/**
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* Finds a principal by its URI.
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*
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* This method may receive any type of uri, but mailto: addresses will be
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* the most common.
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*
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* Implementation of this API is optional. It is currently used by the
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* CalDAV system to find principals based on their email addresses. If this
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* API is not implemented, some features may not work correctly.
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*
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* This method must return a relative principal path, or null, if the
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* principal was not found or you refuse to find it.
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*
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* @param string $uri
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* @param string $principalPrefix
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* @return string
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*/
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function findByUri($uri, $principalPrefix) {
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// Note that the default implementation here is a bit slow and could
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// likely be optimized.
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if (substr($uri, 0, 7) !== 'mailto:') {
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return;
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}
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$result = $this->searchPrincipals(
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$principalPrefix,
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['{http://sabredav.org/ns}email-address' => substr($uri, 7)]
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);
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if ($result) {
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return $result[0];
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}
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}
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}
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