isProxyPrincipal($principal)) { $realPrincipal = $this->getPrincipalUriFromProxyPrincipal($principal); $principalArray = $this->getPrincipalByPath($realPrincipal); if (!$principalArray) { throw new Exception('Principal not found'); } $proxies = $this->proxyMapper->getProxiesOf($principalArray['uri']); foreach ($proxies as $proxy) { if ($this->isReadProxyPrincipal($principal) && $proxy->getPermissions() === ProxyMapper::PERMISSION_READ) { $members[] = $proxy->getProxyId(); } if ($this->isWriteProxyPrincipal($principal) && $proxy->getPermissions() === (ProxyMapper::PERMISSION_READ | ProxyMapper::PERMISSION_WRITE)) { $members[] = $proxy->getProxyId(); } } } return $members; } /** * Returns the list of groups a principal is a member of * * @param string $principal * @param bool $needGroups * @return array * @throws Exception */ public function getGroupMembership($principal, $needGroups = false) { [$prefix, $name] = \Sabre\Uri\split($principal); if ($prefix !== $this->principalPrefix) { return []; } $principalArray = $this->getPrincipalByPath($principal); if (!$principalArray) { throw new Exception('Principal not found'); } $groups = []; $proxies = $this->proxyMapper->getProxiesFor($principal); foreach ($proxies as $proxy) { if ($proxy->getPermissions() === ProxyMapper::PERMISSION_READ) { $groups[] = $proxy->getOwnerId() . '/calendar-proxy-read'; } if ($proxy->getPermissions() === (ProxyMapper::PERMISSION_READ | ProxyMapper::PERMISSION_WRITE)) { $groups[] = $proxy->getOwnerId() . '/calendar-proxy-write'; } } return $groups; } /** * 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 string[] $members * @throws Exception */ public function setGroupMemberSet($principal, array $members) { [$principalUri, $target] = \Sabre\Uri\split($principal); if ($target !== 'calendar-proxy-write' && $target !== 'calendar-proxy-read') { throw new Exception('Setting members of the group is not supported yet'); } $masterPrincipalArray = $this->getPrincipalByPath($principalUri); if (!$masterPrincipalArray) { throw new Exception('Principal not found'); } $permission = ProxyMapper::PERMISSION_READ; if ($target === 'calendar-proxy-write') { $permission |= ProxyMapper::PERMISSION_WRITE; } [$prefix, $owner] = \Sabre\Uri\split($principalUri); $proxies = $this->proxyMapper->getProxiesOf($principalUri); foreach ($members as $member) { [$prefix, $name] = \Sabre\Uri\split($member); if ($prefix !== $this->principalPrefix) { throw new Exception('Invalid member group prefix: ' . $prefix); } $principalArray = $this->getPrincipalByPath($member); if (!$principalArray) { throw new Exception('Principal not found'); } $found = false; foreach ($proxies as $proxy) { if ($proxy->getProxyId() === $member) { $found = true; $proxy->setPermissions($proxy->getPermissions() | $permission); $this->proxyMapper->update($proxy); $proxies = array_filter($proxies, function (Proxy $p) use ($proxy) { return $p->getId() !== $proxy->getId(); }); break; } } if ($found === false) { $proxy = new Proxy(); $proxy->setOwnerId($principalUri); $proxy->setProxyId($member); $proxy->setPermissions($permission); $this->proxyMapper->insert($proxy); } } // Delete all remaining proxies foreach ($proxies as $proxy) { // Write and Read Proxies have individual requests, // so only delete proxies of this permission if ($proxy->getPermissions() === $permission) { $this->proxyMapper->delete($proxy); } } } /** * @param string $principalUri * @return bool */ private function isProxyPrincipal(string $principalUri):bool { [$realPrincipalUri, $proxy] = \Sabre\Uri\split($principalUri); [$prefix, $userId] = \Sabre\Uri\split($realPrincipalUri); if (!isset($prefix) || !isset($userId)) { return false; } if ($prefix !== $this->principalPrefix) { return false; } return $proxy === 'calendar-proxy-read' || $proxy === 'calendar-proxy-write'; } /** * @param string $principalUri * @return bool */ private function isReadProxyPrincipal(string $principalUri):bool { [, $proxy] = \Sabre\Uri\split($principalUri); return $proxy === 'calendar-proxy-read'; } /** * @param string $principalUri * @return bool */ private function isWriteProxyPrincipal(string $principalUri):bool { [, $proxy] = \Sabre\Uri\split($principalUri); return $proxy === 'calendar-proxy-write'; } /** * @param string $principalUri * @return string */ private function getPrincipalUriFromProxyPrincipal(string $principalUri):string { [$realPrincipalUri, ] = \Sabre\Uri\split($principalUri); return $realPrincipalUri; } }