nextcloud/apps/dav/lib/CardDAV/CardDavBackend.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Arne Hamann <kontakt+github@arne.email>
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Bjoern Schiessle <bjoern@schiessle.org>
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* @author Björn Schießle <bjoern@schiessle.org>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Georg Ehrke <oc.list@georgehrke.com>
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* @author Joas Schilling <coding@schilljs.com>
* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Stefan Weil <sw@weilnetz.de>
* @author Thomas Citharel <nextcloud@tcit.fr>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
*/
namespace OCA\DAV\CardDAV;
use OCA\DAV\Connector\Sabre\Principal;
use OCA\DAV\DAV\Sharing\Backend;
use OCA\DAV\DAV\Sharing\IShareable;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
use OCP\IGroupManager;
use OCP\IUser;
use OCP\IUserManager;
use PDO;
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use Sabre\CardDAV\Backend\BackendInterface;
use Sabre\CardDAV\Backend\SyncSupport;
use Sabre\CardDAV\Plugin;
use Sabre\DAV\Exception\BadRequest;
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use Sabre\VObject\Component\VCard;
use Sabre\VObject\Reader;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\EventDispatcher\GenericEvent;
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class CardDavBackend implements BackendInterface, SyncSupport {
public const PERSONAL_ADDRESSBOOK_URI = 'contacts';
public const PERSONAL_ADDRESSBOOK_NAME = 'Contacts';
/** @var Principal */
private $principalBackend;
/** @var string */
private $dbCardsTable = 'cards';
/** @var string */
private $dbCardsPropertiesTable = 'cards_properties';
/** @var IDBConnection */
private $db;
/** @var Backend */
private $sharingBackend;
/** @var array properties to index */
public static $indexProperties = [
'BDAY', 'UID', 'N', 'FN', 'TITLE', 'ROLE', 'NOTE', 'NICKNAME',
'ORG', 'CATEGORIES', 'EMAIL', 'TEL', 'IMPP', 'ADR', 'URL', 'GEO', 'CLOUD'];
/**
* @var string[] Map of uid => display name
*/
protected $userDisplayNames;
/** @var IUserManager */
private $userManager;
/** @var EventDispatcherInterface */
private $dispatcher;
/**
* CardDavBackend constructor.
*
* @param IDBConnection $db
* @param Principal $principalBackend
* @param IUserManager $userManager
* @param IGroupManager $groupManager
* @param EventDispatcherInterface $dispatcher
*/
public function __construct(IDBConnection $db,
Principal $principalBackend,
IUserManager $userManager,
IGroupManager $groupManager,
EventDispatcherInterface $dispatcher) {
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$this->db = $db;
$this->principalBackend = $principalBackend;
$this->userManager = $userManager;
$this->dispatcher = $dispatcher;
$this->sharingBackend = new Backend($this->db, $this->userManager, $groupManager, $principalBackend, 'addressbook');
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}
/**
* Return the number of address books for a principal
*
* @param $principalUri
* @return int
*/
public function getAddressBooksForUserCount($principalUri) {
$principalUri = $this->convertPrincipal($principalUri, true);
$query = $this->db->getQueryBuilder();
$query->select($query->func()->count('*'))
->from('addressbooks')
->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)));
return (int)$query->execute()->fetchColumn();
}
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/**
* Returns the list of address books for a specific user.
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*
* Every addressbook should have the following properties:
* id - an arbitrary unique id
* uri - the 'basename' part of the url
* principaluri - Same as the passed parameter
*
* Any additional clark-notation property may be passed besides this. Some
* common ones are :
* {DAV:}displayname
* {urn:ietf:params:xml:ns:carddav}addressbook-description
* {http://calendarserver.org/ns/}getctag
*
* @param string $principalUri
* @return array
*/
public function getAddressBooksForUser($principalUri) {
$principalUriOriginal = $principalUri;
$principalUri = $this->convertPrincipal($principalUri, true);
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$query = $this->db->getQueryBuilder();
$query->select(['id', 'uri', 'displayname', 'principaluri', 'description', 'synctoken'])
->from('addressbooks')
->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)));
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$addressBooks = [];
$result = $query->execute();
while ($row = $result->fetch()) {
$addressBooks[$row['id']] = [
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'id' => $row['id'],
'uri' => $row['uri'],
'principaluri' => $this->convertPrincipal($row['principaluri'], false),
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'{DAV:}displayname' => $row['displayname'],
'{' . Plugin::NS_CARDDAV . '}addressbook-description' => $row['description'],
'{http://calendarserver.org/ns/}getctag' => $row['synctoken'],
'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
];
$this->addOwnerPrincipal($addressBooks[$row['id']]);
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}
$result->closeCursor();
// query for shared addressbooks
$principals = $this->principalBackend->getGroupMembership($principalUriOriginal, true);
$principals = array_merge($principals, $this->principalBackend->getCircleMembership($principalUriOriginal));
$principals = array_map(function ($principal) {
return urldecode($principal);
}, $principals);
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$principals[]= $principalUri;
$query = $this->db->getQueryBuilder();
$result = $query->select(['a.id', 'a.uri', 'a.displayname', 'a.principaluri', 'a.description', 'a.synctoken', 's.access'])
->from('dav_shares', 's')
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->join('s', 'addressbooks', 'a', $query->expr()->eq('s.resourceid', 'a.id'))
->where($query->expr()->in('s.principaluri', $query->createParameter('principaluri')))
->andWhere($query->expr()->eq('s.type', $query->createParameter('type')))
->setParameter('type', 'addressbook')
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->setParameter('principaluri', $principals, IQueryBuilder::PARAM_STR_ARRAY)
->execute();
$readOnlyPropertyName = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only';
while ($row = $result->fetch()) {
if ($row['principaluri'] === $principalUri) {
continue;
}
$readOnly = (int) $row['access'] === Backend::ACCESS_READ;
if (isset($addressBooks[$row['id']])) {
if ($readOnly) {
// New share can not have more permissions then the old one.
continue;
}
if (isset($addressBooks[$row['id']][$readOnlyPropertyName]) &&
$addressBooks[$row['id']][$readOnlyPropertyName] === 0) {
// Old share is already read-write, no more permissions can be gained
continue;
}
}
list(, $name) = \Sabre\Uri\split($row['principaluri']);
$uri = $row['uri'] . '_shared_by_' . $name;
$displayName = $row['displayname'] . ' (' . $this->getUserDisplayName($name) . ')';
$addressBooks[$row['id']] = [
'id' => $row['id'],
'uri' => $uri,
'principaluri' => $principalUriOriginal,
'{DAV:}displayname' => $displayName,
'{' . Plugin::NS_CARDDAV . '}addressbook-description' => $row['description'],
'{http://calendarserver.org/ns/}getctag' => $row['synctoken'],
'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $row['principaluri'],
$readOnlyPropertyName => $readOnly,
];
$this->addOwnerPrincipal($addressBooks[$row['id']]);
}
$result->closeCursor();
return array_values($addressBooks);
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}
public function getUsersOwnAddressBooks($principalUri) {
$principalUri = $this->convertPrincipal($principalUri, true);
$query = $this->db->getQueryBuilder();
$query->select(['id', 'uri', 'displayname', 'principaluri', 'description', 'synctoken'])
->from('addressbooks')
->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)));
$addressBooks = [];
$result = $query->execute();
while ($row = $result->fetch()) {
$addressBooks[$row['id']] = [
'id' => $row['id'],
'uri' => $row['uri'],
'principaluri' => $this->convertPrincipal($row['principaluri'], false),
'{DAV:}displayname' => $row['displayname'],
'{' . Plugin::NS_CARDDAV . '}addressbook-description' => $row['description'],
'{http://calendarserver.org/ns/}getctag' => $row['synctoken'],
'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
];
$this->addOwnerPrincipal($addressBooks[$row['id']]);
}
$result->closeCursor();
return array_values($addressBooks);
}
private function getUserDisplayName($uid) {
if (!isset($this->userDisplayNames[$uid])) {
$user = $this->userManager->get($uid);
if ($user instanceof IUser) {
$this->userDisplayNames[$uid] = $user->getDisplayName();
} else {
$this->userDisplayNames[$uid] = $uid;
}
}
return $this->userDisplayNames[$uid];
}
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/**
* @param int $addressBookId
*/
public function getAddressBookById($addressBookId) {
$query = $this->db->getQueryBuilder();
$result = $query->select(['id', 'uri', 'displayname', 'principaluri', 'description', 'synctoken'])
->from('addressbooks')
->where($query->expr()->eq('id', $query->createNamedParameter($addressBookId)))
->execute();
$row = $result->fetch();
$result->closeCursor();
if ($row === false) {
return null;
}
$addressBook = [
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'id' => $row['id'],
'uri' => $row['uri'],
'principaluri' => $row['principaluri'],
'{DAV:}displayname' => $row['displayname'],
'{' . Plugin::NS_CARDDAV . '}addressbook-description' => $row['description'],
'{http://calendarserver.org/ns/}getctag' => $row['synctoken'],
'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
];
$this->addOwnerPrincipal($addressBook);
return $addressBook;
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}
/**
* @param $addressBookUri
* @return array|null
*/
public function getAddressBooksByUri($principal, $addressBookUri) {
$query = $this->db->getQueryBuilder();
$result = $query->select(['id', 'uri', 'displayname', 'principaluri', 'description', 'synctoken'])
->from('addressbooks')
->where($query->expr()->eq('uri', $query->createNamedParameter($addressBookUri)))
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->andWhere($query->expr()->eq('principaluri', $query->createNamedParameter($principal)))
->setMaxResults(1)
->execute();
$row = $result->fetch();
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$result->closeCursor();
if ($row === false) {
return null;
}
$addressBook = [
'id' => $row['id'],
'uri' => $row['uri'],
'principaluri' => $row['principaluri'],
'{DAV:}displayname' => $row['displayname'],
'{' . Plugin::NS_CARDDAV . '}addressbook-description' => $row['description'],
'{http://calendarserver.org/ns/}getctag' => $row['synctoken'],
'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
];
$this->addOwnerPrincipal($addressBook);
return $addressBook;
}
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/**
* Updates properties for an address book.
*
* The list of mutations is stored in a Sabre\DAV\PropPatch object.
* To do the actual updates, you must tell this object which properties
* you're going to process with the handle() method.
*
* Calling the handle method is like telling the PropPatch object "I
* promise I can handle updating this property".
*
* Read the PropPatch documentation for more info and examples.
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*
* @param string $addressBookId
* @param \Sabre\DAV\PropPatch $propPatch
* @return void
*/
public function updateAddressBook($addressBookId, \Sabre\DAV\PropPatch $propPatch) {
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$supportedProperties = [
'{DAV:}displayname',
'{' . Plugin::NS_CARDDAV . '}addressbook-description',
];
/**
* @suppress SqlInjectionChecker
*/
$propPatch->handle($supportedProperties, function ($mutations) use ($addressBookId) {
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$updates = [];
foreach ($mutations as $property=>$newValue) {
switch ($property) {
case '{DAV:}displayname':
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$updates['displayname'] = $newValue;
break;
case '{' . Plugin::NS_CARDDAV . '}addressbook-description':
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$updates['description'] = $newValue;
break;
}
}
$query = $this->db->getQueryBuilder();
$query->update('addressbooks');
foreach ($updates as $key=>$value) {
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$query->set($key, $query->createNamedParameter($value));
}
$query->where($query->expr()->eq('id', $query->createNamedParameter($addressBookId)))
->execute();
$this->addChange($addressBookId, "", 2);
return true;
});
}
/**
* Creates a new address book
*
* @param string $principalUri
* @param string $url Just the 'basename' of the url.
* @param array $properties
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* @return int
* @throws BadRequest
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*/
public function createAddressBook($principalUri, $url, array $properties) {
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$values = [
'displayname' => null,
'description' => null,
'principaluri' => $principalUri,
'uri' => $url,
'synctoken' => 1
];
foreach ($properties as $property=>$newValue) {
switch ($property) {
case '{DAV:}displayname':
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$values['displayname'] = $newValue;
break;
case '{' . Plugin::NS_CARDDAV . '}addressbook-description':
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$values['description'] = $newValue;
break;
default:
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throw new BadRequest('Unknown property: ' . $property);
}
}
// Fallback to make sure the displayname is set. Some clients may refuse
// to work with addressbooks not having a displayname.
if (is_null($values['displayname'])) {
$values['displayname'] = $url;
}
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$query = $this->db->getQueryBuilder();
$query->insert('addressbooks')
->values([
'uri' => $query->createParameter('uri'),
'displayname' => $query->createParameter('displayname'),
'description' => $query->createParameter('description'),
'principaluri' => $query->createParameter('principaluri'),
'synctoken' => $query->createParameter('synctoken'),
])
->setParameters($values)
->execute();
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return $query->getLastInsertId();
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}
/**
* Deletes an entire addressbook and all its contents
*
* @param mixed $addressBookId
* @return void
*/
public function deleteAddressBook($addressBookId) {
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$query = $this->db->getQueryBuilder();
$query->delete($this->dbCardsTable)
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->where($query->expr()->eq('addressbookid', $query->createParameter('addressbookid')))
->setParameter('addressbookid', $addressBookId)
->execute();
$query->delete('addressbookchanges')
->where($query->expr()->eq('addressbookid', $query->createParameter('addressbookid')))
->setParameter('addressbookid', $addressBookId)
->execute();
$query->delete('addressbooks')
->where($query->expr()->eq('id', $query->createParameter('id')))
->setParameter('id', $addressBookId)
->execute();
$this->sharingBackend->deleteAllShares($addressBookId);
$query->delete($this->dbCardsPropertiesTable)
->where($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)))
->execute();
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}
/**
* Returns all cards for a specific addressbook id.
*
* This method should return the following properties for each card:
* * carddata - raw vcard data
* * uri - Some unique url
* * lastmodified - A unix timestamp
*
* It's recommended to also return the following properties:
* * etag - A unique etag. This must change every time the card changes.
* * size - The size of the card in bytes.
*
* If these last two properties are provided, less time will be spent
* calculating them. If they are specified, you can also ommit carddata.
* This may speed up certain requests, especially with large cards.
*
* @param mixed $addressBookId
* @return array
*/
public function getCards($addressBookId) {
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$query = $this->db->getQueryBuilder();
$query->select(['id', 'uri', 'lastmodified', 'etag', 'size', 'carddata', 'uid'])
->from($this->dbCardsTable)
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->where($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)));
$cards = [];
$result = $query->execute();
while ($row = $result->fetch()) {
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$row['etag'] = '"' . $row['etag'] . '"';
$row['carddata'] = $this->readBlob($row['carddata']);
$cards[] = $row;
}
$result->closeCursor();
return $cards;
}
/**
* Returns a specific card.
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*
* The same set of properties must be returned as with getCards. The only
* exception is that 'carddata' is absolutely required.
*
* If the card does not exist, you must return false.
*
* @param mixed $addressBookId
* @param string $cardUri
* @return array
*/
public function getCard($addressBookId, $cardUri) {
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$query = $this->db->getQueryBuilder();
$query->select(['id', 'uri', 'lastmodified', 'etag', 'size', 'carddata', 'uid'])
->from($this->dbCardsTable)
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->where($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)))
->andWhere($query->expr()->eq('uri', $query->createNamedParameter($cardUri)))
->setMaxResults(1);
$result = $query->execute();
$row = $result->fetch();
if (!$row) {
return false;
}
$row['etag'] = '"' . $row['etag'] . '"';
$row['carddata'] = $this->readBlob($row['carddata']);
return $row;
}
/**
* Returns a list of cards.
*
* This method should work identical to getCard, but instead return all the
* cards in the list as an array.
*
* If the backend supports this, it may allow for some speed-ups.
*
* @param mixed $addressBookId
* @param string[] $uris
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* @return array
*/
public function getMultipleCards($addressBookId, array $uris) {
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if (empty($uris)) {
return [];
}
$chunks = array_chunk($uris, 100);
$cards = [];
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$query = $this->db->getQueryBuilder();
$query->select(['id', 'uri', 'lastmodified', 'etag', 'size', 'carddata', 'uid'])
->from($this->dbCardsTable)
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->where($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)))
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->andWhere($query->expr()->in('uri', $query->createParameter('uri')));
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foreach ($chunks as $uris) {
$query->setParameter('uri', $uris, IQueryBuilder::PARAM_STR_ARRAY);
$result = $query->execute();
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while ($row = $result->fetch()) {
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$row['etag'] = '"' . $row['etag'] . '"';
$row['carddata'] = $this->readBlob($row['carddata']);
$cards[] = $row;
}
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$result->closeCursor();
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}
return $cards;
}
/**
* Creates a new card.
*
* The addressbook id will be passed as the first argument. This is the
* same id as it is returned from the getAddressBooksForUser method.
*
* The cardUri is a base uri, and doesn't include the full path. The
* cardData argument is the vcard body, and is passed as a string.
*
* It is possible to return an ETag from this method. This ETag is for the
* newly created resource, and must be enclosed with double quotes (that
* is, the string itself must contain the double quotes).
*
* You should only return the ETag if you store the carddata as-is. If a
* subsequent GET request on the same card does not have the same body,
* byte-by-byte and you did return an ETag here, clients tend to get
* confused.
*
* If you don't return an ETag, you can just return null.
*
* @param mixed $addressBookId
* @param string $cardUri
* @param string $cardData
* @return string
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*/
public function createCard($addressBookId, $cardUri, $cardData) {
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$etag = md5($cardData);
$uid = $this->getUID($cardData);
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$q = $this->db->getQueryBuilder();
$q->select('uid')
->from($this->dbCardsTable)
->where($q->expr()->eq('addressbookid', $q->createNamedParameter($addressBookId)))
->andWhere($q->expr()->eq('uid', $q->createNamedParameter($uid)))
->setMaxResults(1);
$result = $q->execute();
$count = (bool) $result->fetchColumn();
$result->closeCursor();
if ($count) {
throw new \Sabre\DAV\Exception\BadRequest('VCard object with uid already exists in this addressbook collection.');
}
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$query = $this->db->getQueryBuilder();
$query->insert('cards')
->values([
'carddata' => $query->createNamedParameter($cardData, IQueryBuilder::PARAM_LOB),
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'uri' => $query->createNamedParameter($cardUri),
'lastmodified' => $query->createNamedParameter(time()),
'addressbookid' => $query->createNamedParameter($addressBookId),
'size' => $query->createNamedParameter(strlen($cardData)),
'etag' => $query->createNamedParameter($etag),
'uid' => $query->createNamedParameter($uid),
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])
->execute();
$this->addChange($addressBookId, $cardUri, 1);
$this->updateProperties($addressBookId, $cardUri, $cardData);
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$this->dispatcher->dispatch('\OCA\DAV\CardDAV\CardDavBackend::createCard',
new GenericEvent(null, [
'addressBookId' => $addressBookId,
'cardUri' => $cardUri,
'cardData' => $cardData]));
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return '"' . $etag . '"';
}
/**
* Updates a card.
*
* The addressbook id will be passed as the first argument. This is the
* same id as it is returned from the getAddressBooksForUser method.
*
* The cardUri is a base uri, and doesn't include the full path. The
* cardData argument is the vcard body, and is passed as a string.
*
* It is possible to return an ETag from this method. This ETag should
* match that of the updated resource, and must be enclosed with double
* quotes (that is: the string itself must contain the actual quotes).
*
* You should only return the ETag if you store the carddata as-is. If a
* subsequent GET request on the same card does not have the same body,
* byte-by-byte and you did return an ETag here, clients tend to get
* confused.
*
* If you don't return an ETag, you can just return null.
*
* @param mixed $addressBookId
* @param string $cardUri
* @param string $cardData
* @return string
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*/
public function updateCard($addressBookId, $cardUri, $cardData) {
$uid = $this->getUID($cardData);
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$etag = md5($cardData);
$query = $this->db->getQueryBuilder();
$query->update($this->dbCardsTable)
->set('carddata', $query->createNamedParameter($cardData, IQueryBuilder::PARAM_LOB))
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->set('lastmodified', $query->createNamedParameter(time()))
->set('size', $query->createNamedParameter(strlen($cardData)))
->set('etag', $query->createNamedParameter($etag))
->set('uid', $query->createNamedParameter($uid))
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->where($query->expr()->eq('uri', $query->createNamedParameter($cardUri)))
->andWhere($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)))
->execute();
$this->addChange($addressBookId, $cardUri, 2);
$this->updateProperties($addressBookId, $cardUri, $cardData);
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$this->dispatcher->dispatch('\OCA\DAV\CardDAV\CardDavBackend::updateCard',
new GenericEvent(null, [
'addressBookId' => $addressBookId,
'cardUri' => $cardUri,
'cardData' => $cardData]));
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return '"' . $etag . '"';
}
/**
* Deletes a card
*
* @param mixed $addressBookId
* @param string $cardUri
* @return bool
*/
public function deleteCard($addressBookId, $cardUri) {
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try {
$cardId = $this->getCardId($addressBookId, $cardUri);
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} catch (\InvalidArgumentException $e) {
$cardId = null;
}
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$query = $this->db->getQueryBuilder();
$ret = $query->delete($this->dbCardsTable)
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->where($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)))
->andWhere($query->expr()->eq('uri', $query->createNamedParameter($cardUri)))
->execute();
$this->addChange($addressBookId, $cardUri, 3);
$this->dispatcher->dispatch('\OCA\DAV\CardDAV\CardDavBackend::deleteCard',
new GenericEvent(null, [
'addressBookId' => $addressBookId,
'cardUri' => $cardUri]));
if ($ret === 1) {
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if ($cardId !== null) {
$this->purgeProperties($addressBookId, $cardId);
}
return true;
}
return false;
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}
/**
* The getChanges method returns all the changes that have happened, since
* the specified syncToken in the specified address book.
*
* This function should return an array, such as the following:
*
* [
* 'syncToken' => 'The current synctoken',
* 'added' => [
* 'new.txt',
* ],
* 'modified' => [
* 'modified.txt',
* ],
* 'deleted' => [
* 'foo.php.bak',
* 'old.txt'
* ]
* ];
*
* The returned syncToken property should reflect the *current* syncToken
* of the calendar, as reported in the {http://sabredav.org/ns}sync-token
* property. This is needed here too, to ensure the operation is atomic.
*
* If the $syncToken argument is specified as null, this is an initial
* sync, and all members should be reported.
*
* The modified property is an array of nodenames that have changed since
* the last token.
*
* The deleted property is an array with nodenames, that have been deleted
* from collection.
*
* The $syncLevel argument is basically the 'depth' of the report. If it's
* 1, you only have to report changes that happened only directly in
* immediate descendants. If it's 2, it should also include changes from
* the nodes below the child collections. (grandchildren)
*
* The $limit argument allows a client to specify how many results should
* be returned at most. If the limit is not specified, it should be treated
* as infinite.
*
* If the limit (infinite or not) is higher than you're willing to return,
* you should throw a Sabre\DAV\Exception\TooMuchMatches() exception.
*
* If the syncToken is expired (due to data cleanup) or unknown, you must
* return null.
*
* The limit is 'suggestive'. You are free to ignore it.
*
* @param string $addressBookId
* @param string $syncToken
* @param int $syncLevel
* @param int $limit
* @return array
*/
public function getChangesForAddressBook($addressBookId, $syncToken, $syncLevel, $limit = null) {
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// Current synctoken
$stmt = $this->db->prepare('SELECT `synctoken` FROM `*PREFIX*addressbooks` WHERE `id` = ?');
$stmt->execute([ $addressBookId ]);
$currentToken = $stmt->fetchColumn(0);
if (is_null($currentToken)) {
return null;
}
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$result = [
'syncToken' => $currentToken,
'added' => [],
'modified' => [],
'deleted' => [],
];
if ($syncToken) {
$query = "SELECT `uri`, `operation` FROM `*PREFIX*addressbookchanges` WHERE `synctoken` >= ? AND `synctoken` < ? AND `addressbookid` = ? ORDER BY `synctoken`";
if ($limit>0) {
$query .= " LIMIT " . (int)$limit;
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}
// Fetching all changes
$stmt = $this->db->prepare($query);
$stmt->execute([$syncToken, $currentToken, $addressBookId]);
$changes = [];
// This loop ensures that any duplicates are overwritten, only the
// last change on a node is relevant.
while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
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$changes[$row['uri']] = $row['operation'];
}
foreach ($changes as $uri => $operation) {
switch ($operation) {
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case 1:
$result['added'][] = $uri;
break;
case 2:
$result['modified'][] = $uri;
break;
case 3:
$result['deleted'][] = $uri;
break;
}
}
} else {
// No synctoken supplied, this is the initial sync.
$query = "SELECT `uri` FROM `*PREFIX*cards` WHERE `addressbookid` = ?";
$stmt = $this->db->prepare($query);
$stmt->execute([$addressBookId]);
$result['added'] = $stmt->fetchAll(\PDO::FETCH_COLUMN);
}
return $result;
}
/**
* Adds a change record to the addressbookchanges table.
*
* @param mixed $addressBookId
* @param string $objectUri
* @param int $operation 1 = add, 2 = modify, 3 = delete
* @return void
*/
protected function addChange($addressBookId, $objectUri, $operation) {
$sql = 'INSERT INTO `*PREFIX*addressbookchanges`(`uri`, `synctoken`, `addressbookid`, `operation`) SELECT ?, `synctoken`, ?, ? FROM `*PREFIX*addressbooks` WHERE `id` = ?';
$stmt = $this->db->prepare($sql);
$stmt->execute([
$objectUri,
$addressBookId,
$operation,
$addressBookId
]);
$stmt = $this->db->prepare('UPDATE `*PREFIX*addressbooks` SET `synctoken` = `synctoken` + 1 WHERE `id` = ?');
$stmt->execute([
$addressBookId
]);
}
private function readBlob($cardData) {
if (is_resource($cardData)) {
return stream_get_contents($cardData);
}
return $cardData;
}
/**
* @param IShareable $shareable
* @param string[] $add
* @param string[] $remove
*/
public function updateShares(IShareable $shareable, $add, $remove) {
$this->sharingBackend->updateShares($shareable, $add, $remove);
}
/**
* search contact
*
* @param int $addressBookId
* @param string $pattern which should match within the $searchProperties
* @param array $searchProperties defines the properties within the query pattern should match
* @param array $options = array() to define the search behavior
* - 'escape_like_param' - If set to false wildcards _ and % are not escaped, otherwise they are
* @return array an array of contacts which are arrays of key-value-pairs
*/
public function search($addressBookId, $pattern, $searchProperties, $options = []) {
$query = $this->db->getQueryBuilder();
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$query2 = $this->db->getQueryBuilder();
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$query2->selectDistinct('cp.cardid')->from($this->dbCardsPropertiesTable, 'cp');
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$query2->andWhere($query2->expr()->eq('cp.addressbookid', $query->createNamedParameter($addressBookId)));
$or = $query2->expr()->orX();
foreach ($searchProperties as $property) {
$or->add($query2->expr()->eq('cp.name', $query->createNamedParameter($property)));
}
$query2->andWhere($or);
// No need for like when the pattern is empty
if ('' !== $pattern) {
if (\array_key_exists('escape_like_param', $options) && $options['escape_like_param'] === false) {
$query2->andWhere($query2->expr()->ilike('cp.value', $query->createNamedParameter($pattern)));
} else {
$query2->andWhere($query2->expr()->ilike('cp.value', $query->createNamedParameter('%' . $this->db->escapeLikeParameter($pattern) . '%')));
}
}
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$query->select('c.carddata', 'c.uri')->from($this->dbCardsTable, 'c')
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->where($query->expr()->in('c.id', $query->createFunction($query2->getSQL())));
$result = $query->execute();
$cards = $result->fetchAll();
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$result->closeCursor();
return array_map(function ($array) {
$array['carddata'] = $this->readBlob($array['carddata']);
return $array;
}, $cards);
}
/**
* @param int $bookId
* @param string $name
* @return array
*/
public function collectCardProperties($bookId, $name) {
$query = $this->db->getQueryBuilder();
$result = $query->selectDistinct('value')
->from($this->dbCardsPropertiesTable)
->where($query->expr()->eq('name', $query->createNamedParameter($name)))
->andWhere($query->expr()->eq('addressbookid', $query->createNamedParameter($bookId)))
->execute();
$all = $result->fetchAll(PDO::FETCH_COLUMN);
$result->closeCursor();
return $all;
}
/**
* get URI from a given contact
*
* @param int $id
* @return string
*/
public function getCardUri($id) {
$query = $this->db->getQueryBuilder();
$query->select('uri')->from($this->dbCardsTable)
->where($query->expr()->eq('id', $query->createParameter('id')))
->setParameter('id', $id);
$result = $query->execute();
$uri = $result->fetch();
$result->closeCursor();
if (!isset($uri['uri'])) {
throw new \InvalidArgumentException('Card does not exists: ' . $id);
}
return $uri['uri'];
}
/**
* return contact with the given URI
*
* @param int $addressBookId
* @param string $uri
* @returns array
*/
public function getContact($addressBookId, $uri) {
$result = [];
$query = $this->db->getQueryBuilder();
$query->select('*')->from($this->dbCardsTable)
->where($query->expr()->eq('uri', $query->createNamedParameter($uri)))
->andWhere($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)));
$queryResult = $query->execute();
$contact = $queryResult->fetch();
$queryResult->closeCursor();
if (is_array($contact)) {
$result = $contact;
}
return $result;
}
/**
* Returns the list of people whom this address book is shared with.
*
* Every element in this array should have the following properties:
* * href - Often a mailto: address
* * commonName - Optional, for example a first + last name
* * status - See the Sabre\CalDAV\SharingPlugin::STATUS_ constants.
* * readOnly - boolean
* * summary - Optional, a description for the share
*
* @return array
*/
public function getShares($addressBookId) {
return $this->sharingBackend->getShares($addressBookId);
}
/**
* update properties table
*
* @param int $addressBookId
* @param string $cardUri
* @param string $vCardSerialized
*/
protected function updateProperties($addressBookId, $cardUri, $vCardSerialized) {
$cardId = $this->getCardId($addressBookId, $cardUri);
$vCard = $this->readCard($vCardSerialized);
$this->purgeProperties($addressBookId, $cardId);
$query = $this->db->getQueryBuilder();
$query->insert($this->dbCardsPropertiesTable)
->values(
[
'addressbookid' => $query->createNamedParameter($addressBookId),
'cardid' => $query->createNamedParameter($cardId),
'name' => $query->createParameter('name'),
'value' => $query->createParameter('value'),
'preferred' => $query->createParameter('preferred')
]
);
foreach ($vCard->children() as $property) {
if (!in_array($property->name, self::$indexProperties)) {
continue;
}
$preferred = 0;
foreach ($property->parameters as $parameter) {
if ($parameter->name === 'TYPE' && strtoupper($parameter->getValue()) === 'PREF') {
$preferred = 1;
break;
}
}
$query->setParameter('name', $property->name);
$query->setParameter('value', mb_substr($property->getValue(), 0, 254));
$query->setParameter('preferred', $preferred);
$query->execute();
}
}
/**
* read vCard data into a vCard object
*
* @param string $cardData
* @return VCard
*/
protected function readCard($cardData) {
return Reader::read($cardData);
}
/**
* delete all properties from a given card
*
* @param int $addressBookId
* @param int $cardId
*/
protected function purgeProperties($addressBookId, $cardId) {
$query = $this->db->getQueryBuilder();
$query->delete($this->dbCardsPropertiesTable)
->where($query->expr()->eq('cardid', $query->createNamedParameter($cardId)))
->andWhere($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)));
$query->execute();
}
/**
* get ID from a given contact
*
* @param int $addressBookId
* @param string $uri
* @return int
*/
protected function getCardId($addressBookId, $uri) {
$query = $this->db->getQueryBuilder();
$query->select('id')->from($this->dbCardsTable)
->where($query->expr()->eq('uri', $query->createNamedParameter($uri)))
->andWhere($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)));
$result = $query->execute();
$cardIds = $result->fetch();
$result->closeCursor();
if (!isset($cardIds['id'])) {
throw new \InvalidArgumentException('Card does not exists: ' . $uri);
}
return (int)$cardIds['id'];
}
/**
* For shared address books the sharee is set in the ACL of the address book
* @param $addressBookId
* @param $acl
* @return array
*/
public function applyShareAcl($addressBookId, $acl) {
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return $this->sharingBackend->applyShareAcl($addressBookId, $acl);
}
private function convertPrincipal($principalUri, $toV2) {
if ($this->principalBackend->getPrincipalPrefix() === 'principals') {
list(, $name) = \Sabre\Uri\split($principalUri);
if ($toV2 === true) {
return "principals/users/$name";
}
return "principals/$name";
}
return $principalUri;
}
private function addOwnerPrincipal(&$addressbookInfo) {
$ownerPrincipalKey = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal';
$displaynameKey = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_NEXTCLOUD . '}owner-displayname';
if (isset($addressbookInfo[$ownerPrincipalKey])) {
$uri = $addressbookInfo[$ownerPrincipalKey];
} else {
$uri = $addressbookInfo['principaluri'];
}
$principalInformation = $this->principalBackend->getPrincipalByPath($uri);
if (isset($principalInformation['{DAV:}displayname'])) {
$addressbookInfo[$displaynameKey] = $principalInformation['{DAV:}displayname'];
}
}
/**
* Extract UID from vcard
*
* @param string $cardData the vcard raw data
* @return string the uid
* @throws BadRequest if no UID is available
*/
private function getUID($cardData) {
if ($cardData != '') {
$vCard = Reader::read($cardData);
if ($vCard->UID) {
$uid = $vCard->UID->getValue();
return $uid;
}
// should already be handled, but just in case
throw new BadRequest('vCards on CardDAV servers MUST have a UID property');
}
// should already be handled, but just in case
throw new BadRequest('vCard can not be empty');
}
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}