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<?php
class OC_Connector_Sabre_Principal implements Sabre_DAVACL_IPrincipalBackend {
/**
* TODO: write doc
*/
public static function addPrincipal($params){
// Add the user
$uri = 'principals/'.$params['uid'];
$displayname = $params['uid'];
$query = OC_DB::prepare('INSERT INTO *PREFIX*principals (uri,displayname) VALUES(?,?)');
$query->execute(array($uri,$displayname));
// Add calendar and addressbook read and write support (sharing calendars)
$uri = 'principals/'.$params['uid'].'/calendar-proxy-read';
$displayname = null;
$query->execute(array($uri,$displayname));
$uri = 'principals/'.$params['uid'].'/calendar-proxy-write';
$query->execute(array($uri,$displayname));
$uri = 'principals/'.$params['uid'].'/addressbook-proxy-read';
$query->execute(array($uri,$displayname));
$uri = 'principals/'.$params['uid'].'/addressbook-proxy-write';
$query->execute(array($uri,$displayname));
return true;
}
/**
* TODO: write doc
*/
public static function deletePrincipal($params){
$query = OC_DB::prepare('SELECT * FROM *PREFIX*principals');
$result = $query->execute();
$deleteprincipal = OC_DB::prepare('DELETE FROM *PREFIX*principals WHERE id = ?');
$deletegroup = OC_DB::prepare('DELETE FROM *PREFIX*principalgroups WHERE principal_id = ? OR member_id = ?');
// We have to delete the principals and relations! Principals include
while($row = $result->fetchRow()){
// Checking if the principal is in the prefix
$array = explode('/',$row['uri']);
if ($array[1] != $params['uid']) continue;
$deleteprincipal->execute(array($row['id']));
$deletegroup->execute(array($row['id'],$row['id']));
}
return true;
}
/**
* Returns a list of principals based on a prefix.
*
* This prefix will often contain something like 'principals'. You are only
* expected to return principals that are in this base path.
*
* You are expected to return at least a 'uri' for every user, you can
* return any additional properties if you wish so. Common properties are:
* {DAV:}displayname
*
* @param string $prefixPath
* @return array
*/
public function getPrincipalsByPrefix( $prefixPath ){
$query = OC_DB::prepare('SELECT * FROM *PREFIX*principals');
$result = $query->execute();
$principals = array();
while($row = $result->fetchRow()){
// Checking if the principal is in the prefix
list($rowPrefix) = Sabre_DAV_URLUtil::splitPath($row['uri']);
if ($rowPrefix !== $prefixPath) continue;
$principals[] = array(
'uri' => $row['uri'],
'{DAV:}displayname' => $row['displayname']?$row['displayname']:basename($row['uri'])
);
}
return $principals;
}
/**
* Returns a specific principal, specified by it's path.
* The returned structure should be the exact same as from
* getPrincipalsByPrefix.
*
* @param string $path
* @return array
*/
public function getPrincipalByPath($path) {
$query = OC_DB::prepare('SELECT * FROM *PREFIX*principals WHERE uri=?');
$result = $query->execute(array($path));
$users = array();
$row = $result->fetchRow();
if (!$row) return;
return array(
'id' => $row['id'],
'uri' => $row['uri'],
'{DAV:}displayname' => $row['displayname']?$row['displayname']:basename($row['uri'])
);
}
/**
* Returns the list of members for a group-principal
*
* @param string $principal
* @return array
*/
public function getGroupMemberSet($principal) {
$principal = $this->getPrincipalByPath($principal);
if (!$principal) throw new Sabre_DAV_Exception('Principal not found');
$query = OC_DB::prepare('SELECT principals.uri as uri FROM *PREFIX*principalgroups AS groupmembers LEFT JOIN *PREFIX*principals AS principals ON groupmembers.member_id = principals.id WHERE groupmembers.principal_id = ?');
$result = $query->execute(array($principal['id']));
$return = array();
while ($row = $result->fetchRow()){
$return[] = $row['uri'];
}
return $return;
}
/**
* Returns the list of groups a principal is a member of
*
* @param string $principal
* @return array
*/
public function getGroupMembership($principal) {
$principal = $this->getPrincipalByPath($principal);
if (!$principal) throw new Sabre_DAV_Exception('Principal not found');
$query = OC_DB::prepare('SELECT principals.uri as uri FROM *PREFIX*principalgroups AS groupmembers LEFT JOIN *PREFIX*principals AS principals ON groupmembers.member_id = principals.id WHERE groupmembers.member_id = ?');
$result = $query->execute(array($principal['id']));
$return = array();
while ($row = $result->fetchRow()){
$return[] = $row['uri'];
}
return $return;
}
/**
* Updates the list of group members for a group principal.
*
* The principals should be passed as a list of uri's.
*
* @param string $principal
* @param array $members
* @return void
*/
public function setGroupMemberSet($principal, array $members) {
$query = OC_DB::prepare('SELECT id, uri FROM *PREFIX*principals WHERE uri IN (? '.str_repeat(', ?', count($members)).')');
$result = $query->execute(array_merge(array($principal), $members));
$memberIds = array();
$principalId = null;
while($row = $$result->fetchRow()) {
if ($row['uri'] == $principal) {
$principalId = $row['id'];
}
else{
$memberIds[] = $row['id'];
}
}
if (!$principalId) throw new Sabre_DAV_Exception('Principal not found');
// Wiping out old members
$query = OC_DB::prepare('DELETE FROM *PREFIX*principalgroups WHERE principal_id = ?');
$query->execute(array($principalID));
$query = OC_DB::prepare('INSERT INTO *PREFIX*principalgroups (principal_id, member_id) VALUES (?, ?);');
foreach($memberIds as $memberId) {
$query->execute(array($principalId, $memberId));
}
}
}
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