feat: boostrap hicn 22.02

The current patch provides several new features, improvements,
bug fixes and also complete rewrite of entire components.

- lib
The hicn packet parser has been improved with a new packet
format fully based on UDP. The TCP header is still temporarily
supported but the UDP header will replace completely the new hicn
packet format. Improvements have been made to make sure every
packet parsing operation is made via this library. The current
new header can be used as header between the payload and the
UDP header or as trailer in the UDP surplus area to be tested
when UDP options will start to be used.

- hicn-light
The portable packet forwarder has been completely rewritten from
scratch with the twofold objective to improve performance and
code size but  also to drop dependencies such as libparc which is
now removed by the current implementation.

- hicn control
the control library is the agent that is used to program the
packet forwarders via their binary API. This component has
benefited from significant improvements in terms of interaction
model which is now event driven and more robust to failures.

- VPP plugin has been updated to support VPP 22.02

- transport
Major improvement have been made to the RTC protocol, to the
support of IO modules and to the security sub system. Signed
manifests are the default data authenticity and integrity framework.
Confidentiality can be enabled by sharing the encryption key to the
prod/cons layer. The library has been tested with group key based
applications such as broadcast/multicast and real-time on-line
meetings with trusted server keys or MLS.

- testing
Unit testing has been introduced using GoogleTest. One third of
the code base is covered by unit testing with priority on
critical features. Functional testing has also been introduce
using Docker, linux bridging and Robot Framework to define
test with Less Code techniques to facilitate the extension
of the coverage.

Co-authored-by: Mauro Sardara <msardara@cisco.com>
Co-authored-by: Jordan Augé <jordan.auge+fdio@cisco.com>
Co-authored-by: Michele Papalini <micpapal@cisco.com>
Co-authored-by: Angelo Mantellini <manangel@cisco.com>
Co-authored-by: Jacques Samain <jsamain@cisco.com>
Co-authored-by: Olivier Roques <oroques+fdio@cisco.com>
Co-authored-by: Enrico Loparco <eloparco@cisco.com>
Co-authored-by: Giulio Grassi <gigrassi@cisco.com>

Change-Id: I75d0ef70f86d921e3ef503c99271216ff583c215
Signed-off-by: Luca Muscariello <muscariello@ieee.org>
Signed-off-by: Mauro Sardara <msardara@cisco.com>

1 files changed, 81 insertions, 32 deletions

diff --git a/libtransport/src/auth/signer.cc b/libtransport/src/auth/signer.cc
index 884e850ca..e74e2f1b8 100644
--- a/libtransport/src/auth/signer.cc
+++ b/libtransport/src/auth/signer.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021 Cisco and/or its affiliates.
+ * Copyright (c) 2021 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
@@ -13,9 +13,9 @@
  * limitations under the License.
  */
 
+#include <glog/logging.h>
 #include <hicn/transport/auth/signer.h>
-
-using namespace std;
+#include <hicn/transport/utils/chrono_typedefs.h>
 
 namespace transport {
 namespace auth {
@@ -29,31 +29,29 @@ Signer::Signer()
 Signer::~Signer() {}
 
 void Signer::signPacket(PacketPtr packet) {
-  assert(key_ != nullptr);
+  DCHECK(key_ != nullptr);
   core::Packet::Format format = packet->getFormat();
 
-  if (!packet->authenticationHeader()) {
+  if (!packet->hasAH()) {
     throw errors::MalformedAHPacketException();
   }
 
   // Set signature size
   size_t signature_field_len = getSignatureFieldSize();
-  packet->setSignatureSize(signature_field_len);
-  packet->setSignatureSizeGap(0u);
+  packet->setSignatureFieldSize(signature_field_len);
+  packet->updateLength();  // update IP payload length
 
   // Copy IP+TCP / ICMP header before zeroing them
   hicn_header_t header_copy;
   hicn_packet_copy_header(format, packet->packet_start_, &header_copy, false);
 
   // Fill in the hICN AH header
-  auto now = chrono::duration_cast<chrono::milliseconds>(
-                 chrono::system_clock::now().time_since_epoch())
-                 .count();
+  auto now = utils::SteadyTime::nowMs().count();
   packet->setSignatureTimestamp(now);
   packet->setValidationAlgorithm(suite_);
 
   // Set key ID
-  vector<uint8_t> key_id = key_id_.getDigest();
+  std::vector<uint8_t> key_id = key_id_.getDigest();
   packet->setKeyId({key_id.data(), key_id.size()});
 
   // Reset fields to compute the packet hash
@@ -61,22 +59,22 @@ void Signer::signPacket(PacketPtr packet) {
 
   // Compute the signature and put it in the packet
   signBuffer(packet);
-  hicn_packet_copy_header(format, &header_copy, packet->packet_start_, false);
+  packet->setSignature(signature_);
+  packet->setSignatureSize(signature_len_);
 
-  // Set the gap between the signature field size and the signature real size.
-  packet->setSignatureSizeGap(signature_field_len - signature_len_);
-  memcpy(packet->getSignature(), signature_.data(), signature_len_);
+  // Restore header
+  hicn_packet_copy_header(format, &header_copy, packet->packet_start_, false);
 }
 
 void Signer::signBuffer(const std::vector<uint8_t> &buffer) {
-  assert(key_ != nullptr);
+  DCHECK(key_ != nullptr);
   CryptoHashEVP hash_evp = CryptoHash::getEVP(getHashType());
 
   if (hash_evp == nullptr) {
     throw errors::RuntimeException("Unknown hash type");
   }
 
-  shared_ptr<EVP_MD_CTX> mdctx(EVP_MD_CTX_create(), EVP_MD_CTX_free);
+  std::shared_ptr<EVP_MD_CTX> mdctx(EVP_MD_CTX_create(), EVP_MD_CTX_free);
 
   if (mdctx == nullptr) {
     throw errors::RuntimeException("Digest context allocation failed");
@@ -106,7 +104,7 @@ void Signer::signBuffer(const std::vector<uint8_t> &buffer) {
 }
 
 void Signer::signBuffer(const utils::MemBuf *buffer) {
-  assert(key_ != nullptr);
+  DCHECK(key_ != nullptr);
   CryptoHashEVP hash_evp = CryptoHash::getEVP(getHashType());
 
   if (hash_evp == nullptr) {
@@ -114,7 +112,7 @@ void Signer::signBuffer(const utils::MemBuf *buffer) {
   }
 
   const utils::MemBuf *p = buffer;
-  shared_ptr<EVP_MD_CTX> mdctx(EVP_MD_CTX_create(), EVP_MD_CTX_free);
+  std::shared_ptr<EVP_MD_CTX> mdctx(EVP_MD_CTX_create(), EVP_MD_CTX_free);
 
   if (mdctx == nullptr) {
     throw errors::RuntimeException("Digest context allocation failed");
@@ -147,7 +145,18 @@ void Signer::signBuffer(const utils::MemBuf *buffer) {
   signature_.resize(signature_len_);
 }
 
-vector<uint8_t> Signer::getSignature() const { return signature_; }
+std::vector<uint8_t> Signer::getSignature() const { return signature_; }
+
+std::string Signer::getStringSignature() const {
+  std::stringstream string_sig;
+  string_sig << std::hex << std::setfill('0');
+
+  for (auto byte : signature_) {
+    string_sig << std::hex << std::setw(2) << static_cast<int>(byte);
+  }
+
+  return string_sig.str();
+}
 
 size_t Signer::getSignatureSize() const { return signature_len_; }
 
@@ -159,36 +168,75 @@ size_t Signer::getSignatureFieldSize() const {
   return (signature_len_ + 4) - (signature_len_ % 4);
 }
 
+CryptoSuite Signer::getSuite() const { return suite_; }
+
 CryptoHashType Signer::getHashType() const {
   return ::transport::auth::getHashType(suite_);
 }
 
-CryptoSuite Signer::getSuite() const { return suite_; }
+void Signer::display() {
+  std::cout << getStringSuite(suite_) << ": " << getStringSignature()
+            << std::endl;
+}
 
 // ---------------------------------------------------------
 // Void Signer
 // ---------------------------------------------------------
-void VoidSigner::signPacket(PacketPtr packet){};
+void VoidSigner::signPacket(PacketPtr packet) {}
 
-void VoidSigner::signBuffer(const std::vector<uint8_t> &buffer){};
+void VoidSigner::signBuffer(const std::vector<uint8_t> &buffer) {}
 
-void VoidSigner::signBuffer(const utils::MemBuf *buffer){};
+void VoidSigner::signBuffer(const utils::MemBuf *buffer) {}
 
 // ---------------------------------------------------------
 // Asymmetric Signer
 // ---------------------------------------------------------
-AsymmetricSigner::AsymmetricSigner(CryptoSuite suite, shared_ptr<EVP_PKEY> key,
-                                   shared_ptr<EVP_PKEY> pub_key) {
+AsymmetricSigner::AsymmetricSigner(CryptoSuite suite,
+                                   std::shared_ptr<EVP_PKEY> key,
+                                   std::shared_ptr<EVP_PKEY> pub_key) {
+  setKey(suite, key, pub_key);
+}
+
+AsymmetricSigner::AsymmetricSigner(std::string keystore_path,
+                                   std::string password) {
+  FILE *p12file = fopen(keystore_path.c_str(), "r");
+
+  if (p12file == nullptr) {
+    throw errors::RuntimeException("failed to read keystore");
+  }
+
+  std::unique_ptr<PKCS12, decltype(&PKCS12_free)> p12(
+      d2i_PKCS12_fp(p12file, nullptr), &PKCS12_free);
+  X509 *cert_raw;
+  EVP_PKEY *key_raw;
+
+  if (PKCS12_parse(p12.get(), password.c_str(), &key_raw, &cert_raw, nullptr) !=
+      1) {
+    fclose(p12file);
+    throw errors::RuntimeException("failed to parse keystore");
+  }
+
+  std::shared_ptr<EVP_PKEY> key(key_raw, EVP_PKEY_free);
+  std::shared_ptr<EVP_PKEY> pub_key(X509_get_pubkey(cert_raw), EVP_PKEY_free);
+
+  setKey(transport::auth::getSuite(X509_get_signature_nid(cert_raw)), key,
+         pub_key);
+
+  fclose(p12file);
+}
+
+void AsymmetricSigner::setKey(CryptoSuite suite, std::shared_ptr<EVP_PKEY> key,
+                              std::shared_ptr<EVP_PKEY> pub_key) {
   suite_ = suite;
   key_ = key;
-  key_id_ = CryptoHash(getHashType());
+  signature_len_ = EVP_PKEY_size(key.get());
+  signature_.resize(signature_len_);
 
-  vector<uint8_t> pbk(i2d_PublicKey(pub_key.get(), nullptr));
+  std::vector<uint8_t> pbk(i2d_PublicKey(pub_key.get(), nullptr));
   uint8_t *pbk_ptr = pbk.data();
   int len = i2d_PublicKey(pub_key.get(), &pbk_ptr);
 
-  signature_len_ = EVP_PKEY_size(key.get());
-  signature_.resize(signature_len_);
+  key_id_ = CryptoHash(getHashType());
   key_id_.computeDigest(pbk_ptr, len);
 }
 
@@ -205,9 +253,10 @@ size_t AsymmetricSigner::getSignatureFieldSize() const {
 // ---------------------------------------------------------
 // Symmetric Signer
 // ---------------------------------------------------------
-SymmetricSigner::SymmetricSigner(CryptoSuite suite, const string &passphrase) {
+SymmetricSigner::SymmetricSigner(CryptoSuite suite,
+                                 const std::string &passphrase) {
   suite_ = suite;
-  key_ = shared_ptr<EVP_PKEY>(
+  key_ = std::shared_ptr<EVP_PKEY>(
       EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, nullptr,
                                    (const unsigned char *)passphrase.c_str(),
                                    passphrase.size()),