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https://git.friendi.ca/friendica/friendica-addons.git
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170 lines
5.1 KiB
PHP
170 lines
5.1 KiB
PHP
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<?php
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abstract class Sabre_CalDAV_Backend_Common extends Sabre_CalDAV_Backend_Abstract {
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/**
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* List of CalDAV properties, and how they map to database fieldnames
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*
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* Add your own properties by simply adding on to this array
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*
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* @var array
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*/
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public $propertyMap = array(
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'{DAV:}displayname' => 'displayname',
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'{urn:ietf:params:xml:ns:caldav}calendar-description' => 'description',
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'{urn:ietf:params:xml:ns:caldav}calendar-timezone' => 'timezone',
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'{http://apple.com/ns/ical/}calendar-order' => 'calendarorder',
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'{http://apple.com/ns/ical/}calendar-color' => 'calendarcolor',
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);
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abstract public function getNamespace();
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abstract public function getCalUrlPrefix();
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/**
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* @param int $namespace
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* @param int $namespace_id
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*/
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protected function increaseCalendarCtag($namespace, $namespace_id) {
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$namespace = IntVal($namespace);
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$namespace_id = IntVal($namespace_id);
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q("UPDATE %s%scalendars SET `ctag` = `ctag` + 1 WHERE `namespace` = %d AND `namespace_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $namespace, $namespace_id);
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}
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/**
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* Returns a list of calendars for a principal.
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*
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* Every project is an array with the following keys:
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* * id, a unique id that will be used by other functions to modify the
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* calendar. This can be the same as the uri or a database key.
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* * uri, which the basename of the uri with which the calendar is
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* accessed.
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* * principaluri. The owner of the calendar. Almost always the same as
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* principalUri passed to this method.
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*
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* Furthermore it can contain webdav properties in clark notation. A very
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* common one is '{DAV:}displayname'.
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*
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* @param string $principalUri
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* @return array
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*/
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public function getCalendarsForUser($principalUri)
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{
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list(,$name) = Sabre_DAV_URLUtil::splitPath($principalUri);
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$user_id = dav_compat_username2id($name);
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$cals = q("SELECT * FROM %s%scalendars WHERE `uid`=%d AND `namespace` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $user_id, $this->getNamespace());
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$ret = array();
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foreach ($cals as $cal) {
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$dat = array(
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"id" => $cal["namespace"] . "-" . $cal["namespace_id"],
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"uri" => $this->getCalUrlPrefix() . "-" . $cal["namespace_id"],
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"principaluri" => $principalUri,
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'{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}getctag' => $cal['ctag']?$cal['ctag']:'0',
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"calendar_class" => "Sabre_CalDAV_Calendar",
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);
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foreach ($this->propertyMap as $key=>$field) $dat[$key] = $cal[$field];
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$ret[] = $dat;
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}
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return $ret;
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}
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/**
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* Updates properties for a calendar.
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*
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* The mutations array uses the propertyName in clark-notation as key,
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* and the array value for the property value. In the case a property
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* should be deleted, the property value will be null.
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*
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* This method must be atomic. If one property cannot be changed, the
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* entire operation must fail.
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*
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* If the operation was successful, true can be returned.
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* If the operation failed, false can be returned.
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*
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* Deletion of a non-existent property is always successful.
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*
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* Lastly, it is optional to return detailed information about any
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* failures. In this case an array should be returned with the following
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* structure:
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*
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* array(
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* 403 => array(
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* '{DAV:}displayname' => null,
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* ),
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* 424 => array(
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* '{DAV:}owner' => null,
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* )
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* )
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*
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* In this example it was forbidden to update {DAV:}displayname.
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* (403 Forbidden), which in turn also caused {DAV:}owner to fail
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* (424 Failed Dependency) because the request needs to be atomic.
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*
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* @param mixed $calendarId
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* @param array $mutations
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* @return bool|array
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*/
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public function updateCalendar($calendarId, array $mutations) {
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$newValues = array();
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$result = array(
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200 => array(), // Ok
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403 => array(), // Forbidden
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424 => array(), // Failed Dependency
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);
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$hasError = false;
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foreach($mutations as $propertyName=>$propertyValue) {
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// We don't know about this property.
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if (!isset($this->propertyMap[$propertyName])) {
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$hasError = true;
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$result[403][$propertyName] = null;
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unset($mutations[$propertyName]);
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continue;
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}
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$fieldName = $this->propertyMap[$propertyName];
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$newValues[$fieldName] = $propertyValue;
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}
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// If there were any errors we need to fail the request
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if ($hasError) {
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// Properties has the remaining properties
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foreach($mutations as $propertyName=>$propertyValue) {
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$result[424][$propertyName] = null;
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}
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// Removing unused statuscodes for cleanliness
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foreach($result as $status=>$properties) {
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if (is_array($properties) && count($properties)===0) unset($result[$status]);
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}
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return $result;
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}
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$x = explode("-", $calendarId);
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$this->increaseCalendarCtag($x[0], $x[1]);
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$valuesSql = array();
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foreach($newValues as $fieldName=>$value) $valuesSql[] = "`" . $fieldName . "` = '" . dbesc($value) . "'";
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if (count($valuesSql) > 0) {
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q("UPDATE %s%scalendars SET " . implode(", ", $valuesSql) . " WHERE `namespace` = %d AND `namespace_id` = %d",
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CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($x[0]), IntVal($x[1])
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);
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}
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return true;
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}
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}
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