Add credential based challenge using existing cert to request new cert
Change-Id: Iee18c64f55b42e73a3c1c201726d546096dcfef8
Refs: #4052
diff --git a/src/challenge-module/challenge-credential.cpp b/src/challenge-module/challenge-credential.cpp
new file mode 100644
index 0000000..0e5a053
--- /dev/null
+++ b/src/challenge-module/challenge-credential.cpp
@@ -0,0 +1,152 @@
+/**
+ * Copyright (c) 2017, Regents of the University of California.
+ *
+ * This file is part of ndncert, a certificate management system based on NDN.
+ *
+ * ndncert is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation, either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * ndncert is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License along with
+ * ndncert, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndncert authors and contributors.
+ */
+
+#include "challenge-credential.hpp"
+#include "../logging.hpp"
+#include <ndn-cxx/security/verification-helpers.hpp>
+#include <ndn-cxx/util/io.hpp>
+
+namespace ndn {
+namespace ndncert {
+
+_LOG_INIT(ndncert.ChallengeCredential);
+
+NDNCERT_REGISTER_CHALLENGE(ChallengeCredential, "Credential");
+
+const std::string ChallengeCredential::FAILURE_INVALID_FORMAT = "failure-invalid-format";
+const std::string ChallengeCredential::FAILURE_INVALID_CREDENTIAL = "failure-invalid-credential";
+
+const std::string ChallengeCredential::JSON_CREDENTIAL = "signed-cert";
+
+ChallengeCredential::ChallengeCredential(const std::string& configPath)
+ : ChallengeModule("CREDENTIAL")
+ , m_configFile(configPath)
+{
+ parseConfigFile();
+}
+
+void
+ChallengeCredential::parseConfigFile()
+{
+ JsonSection config;
+ try {
+ boost::property_tree::read_json(m_configFile, config);
+ }
+ catch (const boost::property_tree::info_parser_error& error) {
+ BOOST_THROW_EXCEPTION(Error("Failed to parse configuration file " + m_configFile +
+ " " + error.message() + " line " + std::to_string(error.line())));
+ }
+
+ if (config.begin() == config.end()) {
+ BOOST_THROW_EXCEPTION(Error("Error processing configuration file: " + m_configFile + " no data"));
+ }
+
+ m_trustAnchors.clear();
+ auto anchorList = config.get_child("anchor-list");
+ auto it = anchorList.begin();
+ for (; it != anchorList.end(); it++) {
+ std::istringstream ss(it->second.get<std::string>("certificate"));
+ security::v2::Certificate cert = *(io::load<security::v2::Certificate>(ss));
+ m_trustAnchors.push_back(cert);
+ }
+}
+
+JsonSection
+ChallengeCredential::processSelectInterest(const Interest& interest, CertificateRequest& request)
+{
+ // interest format: /caName/CA/_SELECT/{"request-id":"id"}/CREDENTIAL/{"credential":"..."}/<signature>
+ request.setChallengeType(CHALLENGE_TYPE);
+ JsonSection credentialJson = getJsonFromNameComponent(interest.getName(),
+ request.getCaName().size() + 4);
+ std::istringstream ss(credentialJson.get<std::string>(JSON_CREDENTIAL));
+
+ security::v2::Certificate credential;
+ try {
+ credential = *(io::load<security::v2::Certificate>(ss));
+ }
+ catch (const std::exception& e) {
+ _LOG_TRACE("Cannot load credential parameter" << e.what());
+ request.setStatus(FAILURE_INVALID_FORMAT);
+ return genResponseChallengeJson(request.getRequestId(), CHALLENGE_TYPE, FAILURE_INVALID_FORMAT);
+ }
+
+ if (credential.getContent() != request.getCert().getContent()
+ || credential.getKeyName() != request.getCert().getKeyName()) {
+ request.setStatus(FAILURE_INVALID_CREDENTIAL);
+ return genResponseChallengeJson(request.getRequestId(), CHALLENGE_TYPE, FAILURE_INVALID_CREDENTIAL);
+ }
+ Name signingKeyName = credential.getSignature().getKeyLocator().getName();
+
+ for (auto anchor : m_trustAnchors) {
+ if (anchor.getKeyName() == signingKeyName) {
+ if (security::verifySignature(credential, anchor)) {
+ request.setStatus(SUCCESS);
+ return genResponseChallengeJson(request.getRequestId(), CHALLENGE_TYPE, SUCCESS);
+ }
+ }
+ }
+ request.setStatus(FAILURE_INVALID_CREDENTIAL);
+ return genResponseChallengeJson(request.getRequestId(), CHALLENGE_TYPE, FAILURE_INVALID_CREDENTIAL);
+}
+
+JsonSection
+ChallengeCredential::processValidateInterest(const Interest& interest, CertificateRequest& request)
+{
+ // there is no validate request here, do nothing
+ return genResponseChallengeJson(request.getRequestId(), CHALLENGE_TYPE, FAILURE_INVALID_FORMAT);
+}
+
+std::list<std::string>
+ChallengeCredential::getSelectRequirements()
+{
+ std::list<std::string> result;
+ result.push_back("Please input the bytes of a same key certificate signed by trust anchor");
+ return result;
+}
+
+std::list<std::string>
+ChallengeCredential::getValidateRequirements(const std::string& status)
+{
+ // there is no validate request here, do nothing
+ std::list<std::string> result;
+ return result;
+}
+
+JsonSection
+ChallengeCredential::doGenSelectParamsJson(const std::string& status,
+ const std::list<std::string>& paramList)
+{
+ JsonSection result;
+ BOOST_ASSERT(status == WAIT_SELECTION);
+ BOOST_ASSERT(paramList.size() == 1);
+ result.put(JSON_CREDENTIAL, paramList.front());
+ return result;
+}
+
+JsonSection
+ChallengeCredential::doGenValidateParamsJson(const std::string& status,
+ const std::list<std::string>& paramList)
+{
+ JsonSection result;
+ BOOST_ASSERT(paramList.size() == 0);
+ return result;
+}
+
+} // namespace ndncert
+} // namespace ndn