Task #3290
Updated by Qiuhan Ding about 9 years ago
One module of the new Validator framework is `KeyManager` which manages trust anchors, verified keys, unverified keys, and key retrieval.
This issue designs KeyManager abstraction.
class KeyManager
{
public:
// create a KeyManager with @p face.
KeyManager(Face* face);
shared_ptr<const Data> void
retrieveTrustedCert(const Interest& interest); retrieve(const KeyRequest& req)
{
auto anchor anchorIt = m_anchors.find(interest); m_anchors.find(req.getInterest());
if (anchor (anchorIt != nullptr) m_anchors.end()) {
return anchor; req.validationSuccessCallback(anchorIt->getData());
}
auto key keyIt = m_verfiedKeyCache.find(interest); m_verfiedKeyCache.find(req.getInterest());
if (keyIt != m_verfiedKeyCache.end()) {
return key;
req.validationSuccessCallback(keyIt->getData());
}
// Retrieve unverified certificate
void
retrieveCertificate(shared_ptr<KeyRequest>& req,
const RetrievalSuccessCallback& onRetrieval,
const RetrievalFailureCallback& onFailure)
{
auto uKey uKeyIt = m_unverfiedKeyCache.find(req->interest); m_unverfiedKeyCache.find(req.getInterest());
if (uKey (uKeyIt != nullptr) m_unverfiedKeyCache.end()) {
return onRetrieval(uKey, req); req.retrivalSuccessCallback(uKeyIt->getData());
}
if (m_face != nullptr)
fetchKeyFromNetwork(req, onRetrieval, onFailure);
else
onFailure(req->interest, req); fetchKeyFromNetwork(req);
}
void
fetchKeyFromNetwork(shared_ptr<KeyRequest>& req,
const RetrievalSuccessCallback& onRetrieval,
const RetrievalFailureCallback& onFailure) fetchKeyFromNetwork(const KeyRequest& req)
{
preProcess(const_cast<KeyRequest&> req);
m_face->expressInterest(req.interest. onRetrieval, onFailure, onTimeout); m_face->expressInterest(req.getInterest(). res.retrivalSuccessCallback, res.retrivalTimeoutCallback);
}
void
loadAnchor(...);
void
loadVerifiedKey(...);
void
loadUnverifiedKey(...);
// call back when interest times out, will retry @p remainRetries times before falure
void
onTimeout(const Interest& interest, int remainRetries,
shared_ptr<KeyRequest>& req,
const RetrievalSuccessCallback& onRetrieval,
const RetrievalFailureCallback& onFailure);
private:
virtual
preProcess(KeyRequest& req) = 0;
private:
Face* m_face;
TrustAnchorContainer m_anchors; // trust anchors
CertificateCache m_verfiedKeyCache; // cache of verified keys.
DataCache m_unverfiedKeyCache; // cache of unverified keys.
};