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466 lines
14 KiB
PHP
466 lines
14 KiB
PHP
<?php
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/**
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* ownCloud - Base class for Contacts backends
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*
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* @author Thomas Tanghus
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* @copyright 2013-2014 Thomas Tanghus (thomas@tanghus.net)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\Contacts\Backend;
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use OCA\Contacts\VObject\VCard;
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/**
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* Subclass this class for address book backends.
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*/
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abstract class AbstractBackend {
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/**
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* The following methods MUST be implemented:
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*
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* @method array getAddressBooksForUser(array $options = array())
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* @method array|null getAddressBook(string $addressbookid, array $options = array())
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* @method array getContacts(string $addressbookid, array $options = array())
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* @method array|null getContact(string $addressbookid, mixed $id, array $options = array())
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* The following methods MAY be implemented:
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* @method bool hasAddressBook(string $addressbookid)
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* @method bool updateAddressBook(string $addressbookid, array $updates, array $options = array())
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* @method string createAddressBook(array $properties, array $options = array())
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* @method bool deleteAddressBook(string $addressbookid, array $options = array())
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* @method int lastModifiedAddressBook(string $addressbookid)
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* @method array numContacts(string $addressbookid)
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* @method bool updateContact(string $addressbookid, string $id, VCard $contact, array $options = array())
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* @method string createContact(string $addressbookid, VCard $contact, array $properties)
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* @method bool deleteContact(string $addressbookid, string $id, array $options = array())
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* @method int lastModifiedContact(string $addressbookid)
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*/
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/**
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* The name of the backend.
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* @var string
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*/
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public $name;
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/**
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* The current user.
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* @var string
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*/
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public $userid;
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protected $possibleContactPermissions = array(
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\OCP\PERMISSION_CREATE => 'createContact',
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\OCP\PERMISSION_READ => 'getContact',
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\OCP\PERMISSION_UPDATE => 'updateContact',
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\OCP\PERMISSION_DELETE => 'deleteContact',
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);
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protected $possibleAddressBookPermissions = array(
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\OCP\PERMISSION_CREATE => 'createAddressBook',
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\OCP\PERMISSION_READ => 'getAddressBook',
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\OCP\PERMISSION_UPDATE => 'updateAddressBook',
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\OCP\PERMISSION_DELETE => 'deleteAddressBook',
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);
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/**
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* Sets up the backend
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*
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*/
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public function __construct($userid = null) {
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$this->userid = $userid ? $userid : \OC::$server->getUserSession()->getUser()->getUId();
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}
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/**
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* @brief Get all possible permissions for contacts based on what the backend implements.
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* @returns bitwise-or'ed actions
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*
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* Returns the supported actions as an int to be
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* compared with \OCP\PERMISSION_CREATE etc.
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*/
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protected function getContactPermissions() {
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$permissions = 0;
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foreach ($this->possibleContactPermissions as $permission => $methodName) {
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if(method_exists($this, $methodName)) {
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$permissions |= $permission;
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}
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}
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//\OCP\Util::writeLog('contacts', __METHOD__.', permissions' . $permissions, \OCP\Util::DEBUG);
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return $permissions;
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}
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/**
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* @brief Get all permissions for address book based on what the backend implements.
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* @returns bitwise-or'ed actions
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*
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* Returns the supported actions as int to be
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* compared with \OCP\PERMISSION_CREATE etc.
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*/
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protected function getAddressBookPermissions() {
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$permissions = 0;
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foreach ($this->possibleAddressBookPermissions as $permission => $methodName) {
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if (method_exists($this, $methodName)) {
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$permissions |= $permission;
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}
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}
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//\OCP\Util::writeLog('contacts', __METHOD__.', permissions' . $permissions, \OCP\Util::DEBUG);
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return $permissions;
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}
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/**
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* @brief Check if backend implements action for contacts
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* @param $actions bitwise-or'ed actions
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* @returns boolean
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*
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* Returns the supported actions as int to be
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* compared with \OCP\PERMISSION_CREATE etc.
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*/
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public function hasContactMethodFor($permission) {
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return (bool)($this->getContactPermissions() & $permission);
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}
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/**
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* @brief Check if backend implements action for contacts
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* @param $actions bitwise-or'ed actions
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* @returns boolean
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*
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* Returns the supported actions as int to be
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* compared with \OCP\PERMISSION_CREATE etc.
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*/
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public function hasAddressBookMethodFor($permission) {
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return (bool)($this->getAddressBookPermissions() & $permission);
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}
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/**
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* Check if the backend has the address book
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*
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* This can be reimplemented in the backend to improve performance.
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*
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* @param string $addressBookId
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* @return bool
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*/
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public function hasAddressBook($addressBookId) {
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return count($this->getAddressBook($addressBookId)) > 0;
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}
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/**
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* Returns the number of contacts in an address book.
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* Implementations can choose to override this method to either
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* get the result more effectively or to return null if the backend
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* cannot determine the number.
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*
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* @param string $addressBookId
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* @return integer
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*/
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public function numContacts($addressBookId) {
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return count($this->getContacts($addressBookId));
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}
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/**
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* Returns the list of addressbooks for a specific user.
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*
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* The returned arrays MUST contain a unique 'id' for the
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* backend and a 'displayname', and it MAY contain a
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* 'description'.
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*
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* @param array $options - Optional (backend specific options)
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* @return array
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*/
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public abstract function getAddressBooksForUser(array $options = array());
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/**
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* Get an addressbook's properties
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*
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* The returned array MUST contain string: 'displayname',string: 'backend'
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* and integer: 'permissions' value using there ownCloud CRUDS constants
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* (which MUST be at least \OCP\PERMISSION_READ).
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* Currently the only ones supported are 'displayname' and
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* 'description', but backends can implement additional.
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*
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* @param string $addressBookId
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* @param array $options - Optional (backend specific options)
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* @return array|null $properties
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*/
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public abstract function getAddressBook($addressBookId, array $options = array());
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/**
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* Updates an addressbook's properties
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*
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* The $properties array contains the changes to be made.
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*
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* Currently the only ones supported are 'displayname' and
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* 'description', but backends can implement additional.
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*
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* @param string $addressBookId
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* @param array $properties
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* @param array $options - Optional (backend specific options)
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* @return bool
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public function updateAddressBook($addressBookId, array $properties, array $options = array());
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*/
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/**
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* Creates a new address book
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*
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* Classes that doesn't support adding address books MUST NOT implement this method.
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*
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* Currently the only ones supported are 'displayname' and
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* 'description', but backends can implement additional.
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* 'displayname' MUST be present.
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*
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* @param array $properties
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* @param array $options - Optional (backend specific options)
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* @return string|false The ID if the newly created AddressBook or false on error.
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public function createAddressBook(array $properties, array $options = array());
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*/
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/**
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* Deletes an entire address book and all its contents
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*
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* Classes that doesn't support deleting address books MUST NOT implement this method.
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*
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* @param string $addressBookId
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* @param array $options - Optional (backend specific options)
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* @return bool
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public function deleteAddressBook($addressBookId, array $options = array());
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*/
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/**
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* @brief Get the last modification time for an address book.
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*
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* Must return a UNIX time stamp or null if the backend
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* doesn't support it.
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*
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* @param string $addressBookId
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* @returns int | null
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*/
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public function lastModifiedAddressBook($addressBookId) {
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}
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/**
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* @brief 'touch' an address book.
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*
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* If implemented this method must mark the address books
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* modification date so lastModifiedAddressBook() can be
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* used to invalidate the cache.
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*
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* @param string $addressBookId
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*/
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public function setModifiedAddressBook($addressBookId) {
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}
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/**
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* Returns all contacts for a specific addressbook id.
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*
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* The returned array MUST contain the unique ID a string value 'id', a string
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* value 'displayname', a string value 'owner' and an integer 'permissions' value using there
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* ownCloud CRUDS constants (which MUST be at least \OCP\PERMISSION_READ), and SHOULD
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* contain the properties of the contact formatted as a vCard 3.0
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* https://tools.ietf.org/html/rfc2426 mapped to 'carddata' or as an
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* \OCA\Contacts\VObject\VCard object mapped to 'vcard'.
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*
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* Example:
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*
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* array(
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* 0 => array('id' => '4e111fef5df', 'owner' => 'foo', 'permissions' => 1, 'displayname' => 'John Q. Public', 'vcard' => $vobject),
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* 1 => array('id' => 'bbcca2d1535', 'owner' => 'bar', 'permissions' => 32, 'displayname' => 'Jane Doe', 'carddata' => $data)
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* );
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*
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* For contacts that contain loads of data, the 'carddata' or 'vcard' MAY be omitted
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* as it can be fetched later.
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*
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* The following options are supported in the $options array:
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*
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* - 'limit': An integer value for the number of contacts to fetch in each call.
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* - 'offset': The offset to start at.
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* - 'omitdata': Whether to fetch the entire carddata or vcard.
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*
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* @param string $addressBookId
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* @param array $options - Optional options
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* @return array
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*/
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public abstract function getContacts($addressBookId, array $options = array());
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/**
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* Returns a specfic contact.
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*
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* Same as getContacts except that either 'carddata' or 'vcard' is mandatory.
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*
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* @param string $addressBookId
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* @param string $id
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* @param array $options - Optional options
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* @return array|null
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*/
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public abstract function getContact($addressBookId, $id, array $options = array());
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/**
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* Creates a new contact
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*
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* Classes that doesn't support adding contacts MUST NOT implement this method.
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*
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* @param string $addressBookId
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* @param VCard $contact
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* @param array $options - Optional options
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* @return string|bool The identifier for the new contact or false on error.
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public function createContact($addressbookid, $contact, array $options = array());
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*/
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/**
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* Updates a contact
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*
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* Classes that doesn't support updating contacts MUST NOT implement this method.
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*
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* @param string $addressBookId
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* @param mixed $id
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* @param VCard $contact
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* @param array $options - Optional options
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* @return bool
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public function updateContact($addressbookid, $id, $carddata, array $options = array());
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*/
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/**
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* Deletes a contact
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*
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* Classes that doesn't support deleting contacts MUST NOT implement this method.
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*
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* @param string $addressBookId
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* @param mixed $id
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* @param array $options - Optional options
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* @return bool
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public function deleteContact($addressbookid, $id, array $options = array());
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*/
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/**
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* @brief Get the last modification time for a contact.
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*
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* Must return a UNIX time stamp or null if the backend
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* doesn't support it.
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*
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* @param string $addressBookId
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* @param mixed $id
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* @returns int | null
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*/
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public function lastModifiedContact($addressBookId, $id) {
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}
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/**
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* Creates a unique key for inserting into oc_preferences.
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* As IDs can have any length and the key field is limited to 64 chars,
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* the IDs are transformed to the first 8 chars of their md5 hash.
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*
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* @param string $addressBookId.
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* @param string $contactId.
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* @throws \BadMethodCallException
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* @return string
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*/
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protected function combinedKey($addressBookId = null, $contactId = null) {
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$key = $this->name;
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if (!is_null($addressBookId)) {
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$key .= '_' . substr(md5($addressBookId), 0, 8);
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if (!is_null($contactId)) {
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$key .= '_' . substr(md5($contactId), 0, 8);
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}
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} else if (!is_null($contactId)) {
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throw new \BadMethodCallException(
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__METHOD__ . ' cannot be called with a contact ID but no address book ID'
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);
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}
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return $key;
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}
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/**
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* @brief Query whether a backend or an address book is active
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* @param string $addressBookId If null it checks whether the backend is activated.
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* @return boolean
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*/
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public function isActive($addressBookId = null) {
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$key = $this->combinedKey($addressBookId);
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$key = 'active_' . $key;
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return !!(\OCP\Config::getUserValue($this->userid, 'contacts', $key, 1));
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}
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/**
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* @brief Activate a backend or an address book
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* @param bool active
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* @param string $addressBookId If null it activates the backend.
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* @return boolean
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*/
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public function setActive($active, $addressBookId = null) {
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$key = $this->combinedKey($addressBookId);
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$key = 'active_' . $key;
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$this->setModifiedAddressBook($addressBookId);
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return \OCP\Config::setUserValue($this->userid, 'contacts', $key, (int)$active);
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}
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/**
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* @brief get all the preferences for the addressbook
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* @return array Format array('param1' => 'value', 'param2' => 'value')
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*/
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public function getPreferences($addressBookId) {
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$key = 'prefs_' . $this->combinedKey($addressBookId);
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$data = \OCP\Config::getUserValue($this->userid, 'contacts', $key, false);
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return $data ? json_decode($data, true) : array();
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}
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/**
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* @brief sets the preferences for the addressbook given in parameter
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* @param array the preferences, format array('param1' => 'value', 'param2' => 'value')
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* @return boolean
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*/
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public function setPreferences($addressbookid, array $params) {
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$key = 'prefs_' . $this->combinedKey($addressbookid);
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$data = json_encode($params);
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return $data
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? \OCP\Config::setUserValue($this->userid, 'contacts', $key, $data)
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: false;
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}
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/**
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* @param string $addressbookid
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*/
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public function removePreferences($addressbookid) {
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$key = $this->combinedKey($addressbookid);
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$key = 'prefs_' . $key;
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\OC::$server->getConfig()->deleteUserValue( $this->userid, 'contacts', $key );
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}
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}
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