/**
* Get XML response for items in the collection
* If '/' is requested, a list of visible users is given, otherwise
* a list of calendars for the user which are parented by this path.
*/
function get_collection_contents($depth, $collection, $parent_path = null)
{
global $c, $session, $request, $reply, $property_list;
$bound_from = $collection->bound_from();
$bound_to = $collection->dav_name();
if (!isset($parent_path)) {
$parent_path = $collection->dav_name();
}
dbg_error_log('PROPFIND', 'Getting collection contents: Depth %d, Path: %s, Bound from: %s, Bound to: %s', $depth, $collection->dav_name(), $bound_from, $bound_to);
$date_format = iCalendar::HttpDateFormat();
$responses = array();
if (!$collection->IsCalendar() && !$collection->IsAddressbook()) {
/**
* Calendar/Addressbook collections may not contain collections, so we won't look
*/
$params = array(':session_principal' => $session->principal_id, ':scan_depth' => $c->permission_scan_depth);
if ($bound_from == '/') {
$sql = "SELECT usr.*, '/' || username || '/' AS dav_name, md5(username || updated::text) AS dav_etag, ";
$sql .= "to_char(joined at time zone 'GMT',{$date_format}) AS created, ";
$sql .= "to_char(updated at time zone 'GMT',{$date_format}) AS modified, ";
$sql .= 'FALSE AS is_calendar, TRUE AS is_principal, FALSE AS is_addressbook, \'principal\' AS type, ';
$sql .= 'principal_id AS collection_id, ';
$sql .= 'principal.* ';
$sql .= 'FROM usr JOIN principal USING (user_no) ';
$sql .= "WHERE (pprivs(:session_principal::int8,principal.principal_id,:scan_depth::int) & 1::BIT(24))::INT4::BOOLEAN ";
$sql .= 'ORDER BY usr.user_no';
} else {
$qry = new AwlQuery('SELECT * FROM dav_binding WHERE dav_binding.parent_container = :this_dav_name ORDER BY bind_id', array(':this_dav_name' => $bound_from));
if ($qry->Exec('PROPFIND', __LINE__, __FILE__) && $qry->rows() > 0) {
while ($binding = $qry->Fetch()) {
$resource = new DAVResource($binding->dav_name);
if ($resource->HavePrivilegeTo('DAV::read', false)) {
$resource->set_bind_location(str_replace($bound_from, $bound_to, $binding->dav_name));
$responses[] = $resource->RenderAsXML($property_list, $reply);
if ($depth > 0) {
$responses = array_merge($responses, get_collection_contents($depth - 1, $resource, $binding->dav_name));
}
}
}
}
$sql = 'SELECT principal.*, collection.*, \'collection\' AS type ';
$sql .= 'FROM collection LEFT JOIN principal USING (user_no) ';
$sql .= 'WHERE parent_container = :this_dav_name ';
$sql .= "AND (path_privs(:session_principal::int8,collection.dav_name,:scan_depth::int) & 1::BIT(24))::INT4::BOOLEAN ";
$sql .= ' ORDER BY collection_id';
$params[':this_dav_name'] = $bound_from;
}
$qry = new AwlQuery($sql, $params);
if ($qry->Exec('PROPFIND', __LINE__, __FILE__) && $qry->rows() > 0) {
while ($subcollection = $qry->Fetch()) {
$resource = new DAVResource($subcollection);
$resource->set_bind_location(str_replace($bound_from, $bound_to, $subcollection->dav_name));
$responses[] = $resource->RenderAsXML($property_list, $reply);
if ($depth > 0) {
$responses = array_merge($responses, get_collection_contents($depth - 1, $resource, str_replace($resource->parent_path(), $parent_path, $resource->dav_name())));
}
}
}
if ($collection->IsPrincipal()) {
// Caldav Proxy: 5.1 par. 2: Add child resources calendar-proxy-(read|write)
dbg_error_log('PROPFIND', 'Adding calendar-proxy-read and write. Path: %s', $bound_from);
$response = add_proxy_response('read', $bound_from);
if (isset($response)) {
$responses[] = $response;
}
$response = add_proxy_response('write', $bound_from);
if (isset($response)) {
$responses[] = $response;
}
}
}
/**
* freebusy permission is not allowed to see the items in a collection. Must have at least read permission.
*/
if ($collection->HavePrivilegeTo('DAV::read', false)) {
dbg_error_log('PROPFIND', 'Getting collection items: Depth %d, Path: %s', $depth, $bound_from);
$privacy_clause = ' ';
$time_limit_clause = ' ';
if ($collection->IsCalendar()) {
if (!$collection->HavePrivilegeTo('all', false)) {
$privacy_clause = " AND (calendar_item.class != 'PRIVATE' OR calendar_item.class IS NULL) ";
}
if (isset($c->hide_older_than) && intval($c->hide_older_than > 0)) {
$time_limit_clause = " AND calendar_item.dtstart > (now() - interval '" . intval($c->hide_older_than) . " days') ";
}
}
$sql = 'SELECT collection.*, principal.*, calendar_item.*, caldav_data.*, ';
$sql .= "to_char(coalesce(calendar_item.created, caldav_data.created) at time zone 'GMT',{$date_format}) AS created, ";
$sql .= "to_char(last_modified at time zone 'GMT',{$date_format}) AS modified, ";
$sql .= 'summary AS dav_displayname ';
$sql .= 'FROM caldav_data LEFT JOIN calendar_item USING( dav_id, user_no, dav_name, collection_id) ';
$sql .= 'LEFT JOIN collection USING(collection_id,user_no) LEFT JOIN principal USING(user_no) ';
$sql .= 'WHERE collection.dav_name = :collection_dav_name ' . $time_limit_clause . ' ' . $privacy_clause;
if (isset($c->strict_result_ordering) && $c->strict_result_ordering) {
$sql .= " ORDER BY caldav_data.dav_id";
}
$qry = new AwlQuery($sql, array(':collection_dav_name' => $bound_from));
if ($qry->Exec('PROPFIND', __LINE__, __FILE__) && $qry->rows() > 0) {
while ($item = $qry->Fetch()) {
$resource = new DAVResource($item);
$resource->set_bind_location(str_replace($bound_from, $bound_to, $item->dav_name));
$responses[] = $resource->RenderAsXML($property_list, $reply, $parent_path);
}
}
}
return $responses;
}
/**
* Get XML response for a single item. Depth is irrelevant for this.
*/
function get_item($item_path)
{
global $session;
$responses = array();
dbg_error_log("PROPFIND", "Getting item: Path: %s", $item_path);
$sql = "SELECT caldav_data.dav_name, caldav_data, caldav_data.dav_etag ";
$sql .= "FROM caldav_data WHERE dav_name = ?";
$qry = new PgQuery($sql, PgQuery::Plain(iCalendar::HttpDateFormat()), PgQuery::Plain(iCalendar::HttpDateFormat()), $item_path);
if ($qry->Exec("PROPFIND", __LINE__, __FILE__) && $qry->rows > 0) {
while ($item = $qry->Fetch()) {
$responses[] = item_to_xml($item);
}
}
return $responses;
}
