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feat(dav): Directly access shared calendars by URI #36681

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feat(dav): Directly access shared calendars by URI #36681

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81 changes: 80 additions & 1 deletion apps/dav/lib/CalDAV/CalDavBackend.php
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -389,7 +389,7 @@ public function getCalendarsForUser($principalUri) {
->where($query->expr()->in('s.principaluri', $query->createParameter('principaluri')))
->andWhere($query->expr()->eq('s.type', $query->createParameter('type')))
->setParameter('type', 'calendar')
->setParameter('principaluri', $principals, \Doctrine\DBAL\Connection::PARAM_STR_ARRAY);
->setParameter('principaluri', $principals, IQueryBuilder::PARAM_STR_ARRAY);

$result = $query->executeQuery();

Expand Down Expand Up @@ -657,6 +657,85 @@ public function getCalendarByUri($principal, $uri) {
return $calendar;
}

public function getSharedCalendarByUri(string $principalUri, string $calendarSharedUri): ?array {
// query for shared calendars
[$calendarUri, ] = explode('_shared_by_', $calendarSharedUri, 2);

$principals = $this->principalBackend->getGroupMembership($principalUri, true);
$principals = array_merge($principals, $this->principalBackend->getCircleMembership($principalUri));

$principals[] = $principalUri;

$fields = array_column($this->propertyMap, 0);
$fields[] = 'a.id';
$fields[] = 'a.uri';
$fields[] = 'a.synctoken';
$fields[] = 'a.components';
$fields[] = 'a.principaluri';
$fields[] = 'a.transparent';
$fields[] = 's.access';
$query = $this->db->getQueryBuilder();
$query->select($fields)
->from('dav_shares', 's')
->join('s', 'calendars', 'a', $query->expr()->eq('s.resourceid', 'a.id'))
->where($query->expr()->eq('a.uri', $query->createParameter('uri')))
->andWhere($query->expr()->in('s.principaluri', $query->createParameter('principaluri')))
->andWhere($query->expr()->eq('s.type', $query->createParameter('type')))
->setParameter('uri', $calendarUri)
->setParameter('type', 'calendar')
->setParameter('principaluri', $principals, IQueryBuilder::PARAM_STR_ARRAY);

$result = $query->executeQuery();

$readOnlyPropertyName = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only';

$calendar = null;

while ($row = $result->fetch()) {
$row['principaluri'] = (string)$row['principaluri'];
if ($row['principaluri'] === $principalUri) {
continue;
}

$readOnly = (int)$row['access'] === Backend::ACCESS_READ;
if (isset($calendars[$row['id']])) {

Check failure

Code scanning / Psalm

UndefinedVariable

Cannot find referenced variable $calendars
if ($readOnly) {
// New share can not have more permissions then the old one.
continue;
}
if (isset($calendars[$row['id']][$readOnlyPropertyName]) &&
$calendars[$row['id']][$readOnlyPropertyName] === 0) {
// Old share is already read-write, no more permissions can be gained
continue;
}
}

// Fixes for shared calendars
[, $name] = Uri\split($row['principaluri']);

Check failure

Code scanning / Psalm

UndefinedFunction

Function Sabre\Uri\split does not exist
$row['displayname'] = $row['displayname'] . ' (' . ($this->userManager->getDisplayName($name) ?? ($name ?? '')) . ')';

$components = [];
if ($row['components']) {
$components = explode(',', $row['components']);
}

$calendar = [
'id' => $row['id'],
'uri' => $row['uri'] . '_shared_by_' . $name,
'principaluri' => $this->convertPrincipal($principalUri, !$this->legacyEndpoint),
'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken'] ?: '0'),
'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent'] ? 'transparent' : 'opaque'),
'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
$readOnlyPropertyName => $readOnly,
];
}
$calendar = $this->rowToCalendar($row, $calendar);

Check notice

Code scanning / Psalm

PossiblyUndefinedVariable

Possibly undefined variable $row, first seen on line 694

Check notice

Code scanning / Psalm

PossiblyNullArgument

Argument 2 of OCA\DAV\CalDAV\CalDavBackend::rowToCalendar cannot be null, possibly null value provided
$calendar = $this->addOwnerPrincipalToCalendar($calendar);
return $this->addResourceTypeToCalendar($row, $calendar);
}

/**
* @return array{id: int, uri: string, '{http://calendarserver.org/ns/}getctag': string, '{http://sabredav.org/ns}sync-token': int, '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set': SupportedCalendarComponentSet, '{urn:ietf:params:xml:ns:caldav}schedule-calendar-transp': ScheduleCalendarTransp, '{urn:ietf:params:xml:ns:caldav}calendar-timezone': ?string }|null
*/
Expand Down
5 changes: 3 additions & 2 deletions apps/dav/lib/CalDAV/CalendarHome.php
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Original file line number Diff line number Diff line change
Expand Up @@ -169,8 +169,9 @@ public function getChild($name) {
}

// Fallback to cover shared calendars
foreach ($this->caldavBackend->getCalendarsForUser($this->principalInfo['uri']) as $calendar) {
if ($calendar['uri'] === $name) {
if ($this->caldavBackend instanceof CalDavBackend) {
$calendar = $this->caldavBackend->getSharedCalendarByUri($this->principalInfo['uri'], $name);
if(!empty($calendar)) {
return new Calendar($this->caldavBackend, $calendar, $this->l10n, $this->config, $this->logger);
}
}
Expand Down