/**
* {@inheritdoc}
*/
public function isAllowed(NodeInterface $from, NodeInterface $to)
{
if ($this->isSibling($from, $to)) {
return EvaluationResult::allowed($this);
}
return EvaluationResult::undefined();
}
/**
* {@inheritdoc}
*/
public function isAllowed(NodeInterface $from, NodeInterface $to)
{
foreach ($this->getTargets() as $namespace) {
if ($this->namespaceContains($namespace, $to->getFQName())) {
return EvaluationResult::allowed($this);
}
}
return EvaluationResult::undefined();
}
/**
* {@inheritdoc}
*/
public function isAllowed(NodeInterface $from, NodeInterface $to)
{
foreach ($this->getTargets() as $namespace) {
if ($this->namespaceContains($namespace, $to->getFQName())) {
return EvaluationResult::denied($this, sprintf("%s has an attached DenyPolicy of namespace %s, preventing use of %s", $from->getFQName(), $namespace, $to->getFQName()));
}
}
return EvaluationResult::undefined();
}
/**
* {@inheritdoc}
*/
public function isAllowed(NodeInterface $from, NodeInterface $to)
{
foreach ($this->allow as $regex => $allowed) {
// check that $from matches
if (!$this->regexMatchesNode($regex, $from)) {
continue;
}
// check all allowed namespaces
foreach ($allowed as $namespace) {
if ($this->namespaceContains($namespace, $to->getFQName())) {
return EvaluationResult::allowed($this);
}
}
}
return EvaluationResult::undefined();
}
/**
* Resolves all hierarchical policies to determine whether the connection between $from and $to is valid.
*
* @param string $from
* @param string $to
* @return \ArchInspec\Policy\Evaluation\IEvaluationResult
*/
public function isAllowed($from, $to)
{
$to = $this->getOrCreateNode($to);
$from = $this->getOrCreateNode($from);
$node = $from;
while (!is_null($node)) {
foreach ($node->getPolicies() as $policy) {
// check that policy affects $to
if (!$policy->affects($from, $to)) {
continue;
}
// only return if the result is not undefined
$result = $policy->isAllowed($from, $to);
if (!$result->isUndefined()) {
return $result;
}
}
$node = $node->getParent();
}
return EvaluationResult::undefined("No matching policy was found!");
}