More refactoring, mainly of the addressbook/VCARD-part

dav/common/dav_carddav_backend_common.inc.php

@@ -0,0 +1,116 @@
+<?php
+
+abstract class Sabre_CardDAV_Backend_Common extends Sabre_CardDAV_Backend_Abstract
+{
+	/**
+	 * @abstract
+	 * @return int
+	 */
+	abstract public function getNamespace();
+
+	/**
+	 * @static
+	 * @abstract
+	 * @return string
+	 */
+	abstract public static function getBackendTypeName();
+
+	/**
+	 * @var array
+	 */
+	static private $addressbookCache = array();
+
+	/**
+	 * @var array
+	 */
+	static private $addressbookObjectCache = array();
+
+	/**
+	 * @static
+	 * @param int $addressbookId
+	 * @return array
+	 */
+	static public function loadCalendarById($addressbookId)
+	{
+		if (!isset(self::$addressbookCache[$addressbookId])) {
+			$c                                = q("SELECT * FROM %s%saddressbooks WHERE `id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($addressbookId));
+			self::$addressbookCache[$addressbookId] = $c[0];
+		}
+		return self::$addressbookCache[$addressbookId];
+	}
+
+	/**
+	 * @static
+	 * @param int $obj_id
+	 * @return array
+	 */
+	static public function loadAddressbookobjectById($obj_id)
+	{
+		if (!isset(self::$addressbookObjectCache[$obj_id])) {
+			$o                                  = q("SELECT * FROM %s%saddressbookobjects WHERE `id` = %d",
+				CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($obj_id)
+			);
+			self::$addressbookObjectCache[$obj_id] = $o[0];
+		}
+		return self::$addressbookObjectCache[$obj_id];
+	}
+
+
+	/**
+	 * Updates an addressbook's properties
+	 *
+	 * See Sabre_DAV_IProperties for a description of the mutations array, as
+	 * well as the return value.
+	 *
+	 * @param mixed $addressBookId
+	 * @param array $mutations
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @see Sabre_DAV_IProperties::updateProperties
+	 * @return bool|array
+	 */
+	public function updateAddressBook($addressBookId, array $mutations)
+	{
+		$updates = array();
+
+		foreach ($mutations as $property=> $newValue) {
+
+			switch ($property) {
+				case '{DAV:}displayname' :
+					$updates['displayname'] = $newValue;
+					break;
+				case '{' . Sabre_CardDAV_Plugin::NS_CARDDAV . '}addressbook-description' :
+					$updates['description'] = $newValue;
+					break;
+				default :
+					// If any unsupported values were being updated, we must
+					// let the entire request fail.
+					return false;
+			}
+
+		}
+
+		// No values are being updated?
+		if (!$updates) {
+			return false;
+		}
+
+		$query = 'UPDATE ' . CALDAV_SQL_DB . CALDAV_SQL_PREFIX . 'addressbooks SET ctag = ctag + 1 ';
+		foreach ($updates as $key=> $value) {
+			$query .= ', `' . dbesc($key) . '` = ' . dbesc($key) . ' ';
+		}
+		$query .= ' WHERE id = ' . IntVal($addressBookId);
+		q($query);
+
+		return true;
+
+	}
+
+	/**
+	 * @param int $addressbookId
+	 */
+	protected function increaseAddressbookCtag($addressbookId)
+	{
+		q("UPDATE %s%saddressbooks SET `ctag` = `ctag` + 1 WHERE `id` = '%d'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($addressbookId));
+		self::$addressbookCache = array();
+	}
+}