validation-policy-simple-hierarchy.cpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#include "validation-policy-simple-hierarchy.hpp"

namespace ndn {
namespace security {
namespace v2 {

void
ValidationPolicySimpleHierarchy::checkPolicy(const Data& data, const shared_ptr<ValidationState>& state,
                                             const ValidationContinuation& continueValidation)
{
  if (!data.getSignature().hasKeyLocator()) {
    return state->fail({ValidationError::Code::INVALID_KEY_LOCATOR, "Required key locator is missing"});
  }
  const KeyLocator& locator = data.getSignature().getKeyLocator();
  if (locator.getType() != KeyLocator::KeyLocator_Name) {
    return state->fail({ValidationError::Code::INVALID_KEY_LOCATOR, "Key locator not Name"});
  }
  if (locator.getName().getPrefix(-2).isPrefixOf(data.getName())) {
    continueValidation(make_shared<CertificateRequest>(Interest(locator.getName())), state);
  }
  else {
    state->fail({ValidationError::Code::INVALID_KEY_LOCATOR, "Data signing policy violation for " +
                 data.getName().toUri() + " by " + locator.getName().toUri()});
  }
}

void
ValidationPolicySimpleHierarchy::checkPolicy(const Interest& interest, const shared_ptr<ValidationState>& state,
                                             const ValidationContinuation& continueValidation)
{
  SignatureInfo info;
  try {
    info.wireDecode(interest.getName().at(signed_interest::POS_SIG_INFO).blockFromValue());
  }
  catch (const tlv::Error& e) {
    return state->fail({ValidationError::Code::INVALID_KEY_LOCATOR, "Invalid signed interest (" +
                        std::string(e.what()) + ")"});
  }
  if (!info.hasKeyLocator()) {
    return state->fail({ValidationError::Code::INVALID_KEY_LOCATOR, "Required key locator is missing"});
  }
  const KeyLocator& locator = info.getKeyLocator();
  if (locator.getType() != KeyLocator::KeyLocator_Name) {
    return state->fail({ValidationError::Code::INVALID_KEY_LOCATOR, "Key locator not Name"});
  }
  if (locator.getName().getPrefix(-2).isPrefixOf(interest.getName())) {
    continueValidation(make_shared<CertificateRequest>(Interest(locator.getName())), state);
  }
  else {
    state->fail({ValidationError::Code::INVALID_KEY_LOCATOR, "Interest signing policy violation for " +
                 interest.getName().toUri() + " by " + locator.getName().toUri()});
  }
}

} // namespace v2
} // namespace security
} // namespace ndn