mirror of
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124 lines
2.7 KiB
PHP
124 lines
2.7 KiB
PHP
<?php
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namespace OCA\Contacts\CardDAV;
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use Sabre\VObject;
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/**
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* vCard validator
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*
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* Validates and tries to fix broken vCards before they're being
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* handed over to Sabre and written to storage.
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*
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* @copyright Copyright (C) 2013 Thomas Tanghus
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* @author Thomas Tanghus (http://tanghus.net/)
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*/
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class ValidatorPlugin extends \Sabre_DAV_ServerPlugin {
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/**
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* Reference to Server class
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*
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* @var Sabre_DAV_Server
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*/
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protected $server;
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/**
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* Initializes the plugin and registers event handlers
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*
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* @param Sabre_DAV_Server $server
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* @return void
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*/
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public function initialize(\Sabre_DAV_Server $server) {
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$this->server = $server;
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$server->subscribeEvent('beforeWriteContent', array($this, 'beforeWriteContent'), 90);
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$server->subscribeEvent('beforeCreateFile', array($this, 'beforeCreateFile'), 90);
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}
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/**
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* This method is triggered before a file gets updated with new content.
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*
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* This plugin uses this method to ensure that Card nodes receive valid
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* vcard data.
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*
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* @param string $path
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* @param Sabre_DAV_IFile $node
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* @param resource $data
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* @return void
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*/
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public function beforeWriteContent($path, \Sabre_DAV_IFile $node, &$data) {
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if (!$node instanceof \Sabre_CardDAV_ICard) {
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return;
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}
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$this->validateVCard($data);
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}
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/**
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* This method is triggered before a new file is created.
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*
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* This plugin uses this method to ensure that Card nodes receive valid
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* vcard data.
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*
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* @param string $path
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* @param resource $data
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* @param Sabre_DAV_ICollection $parentNode
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* @return void
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*/
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public function beforeCreateFile($path, &$data, \Sabre_DAV_ICollection $parentNode) {
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if (!$parentNode instanceof \Sabre_CardDAV_IAddressBook) {
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return;
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}
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$this->validateVCard($data);
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}
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/**
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* Checks if the submitted vCard data is in fact, valid.
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*
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* An exception is thrown if it's not.
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*
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* @param resource|string $data
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* @return void
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*/
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protected function validateVCard(&$data) {
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// If it's a stream, we convert it to a string first.
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if (is_resource($data)) {
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$data = stream_get_contents($data);
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}
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// Converting the data to unicode, if needed.
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$data = \Sabre_DAV_StringUtil::ensureUTF8($data);
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try {
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$vobj = VObject\Reader::read($data);
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} catch (VObject\ParseException $e) {
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throw new \Sabre_DAV_Exception_UnsupportedMediaType(
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'This resource only supports valid vcard data. Parse error: ' . $e->getMessage()
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);
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}
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if ($vobj->name !== 'VCARD') {
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throw new \Sabre_DAV_Exception_UnsupportedMediaType(
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'This collection can only support vcard objects.'
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);
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}
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if (!isset($vobj->UID)) {
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$uid = substr(md5(rand().time()), 0, 10);
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\OCP\Util::writeLog('contacts', __METHOD__.', Adding UID: ' . $uid, \OCP\Util::DEBUG);
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$vobj->add('UID', $uid);
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}
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}
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} |