[HICN-534] Major rework on libtransport organization

Change-Id: I361b83a18b4fd59be136d5f0817fc28e17e89884
Signed-off-by: Mauro Sardara <msardara@cisco.com>

1 files changed, 148 insertions, 0 deletions

diff --git a/libtransport/src/implementation/p2psecure_socket_consumer.h b/libtransport/src/implementation/p2psecure_socket_consumer.h
new file mode 100644
index 000000000..e2ebaf94e
--- /dev/null
+++ b/libtransport/src/implementation/p2psecure_socket_consumer.h
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2017-2020 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:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <hicn/transport/interfaces/socket_consumer.h>
+
+#include <implementation/tls_socket_consumer.h>
+#include <openssl/bio.h>
+#include <openssl/ssl.h>
+
+namespace transport {
+namespace implementation {
+
+class P2PSecureConsumerSocket : public ConsumerSocket,
+                                public interface::ConsumerSocket::ReadCallback {
+  /* Return the number of read bytes in readbytes */
+  friend int read(BIO *b, char *buf, size_t size, size_t *readbytes);
+
+  /* Return the number of read bytes in the return param */
+  friend int readOld(BIO *h, char *buf, int size);
+
+  /* Return the number of written bytes in written */
+  friend int write(BIO *b, const char *buf, size_t size, size_t *written);
+
+  /* Return the number of written bytes in the return param */
+  friend int writeOld(BIO *h, const char *buf, int num);
+
+  friend long ctrl(BIO *b, int cmd, long num, void *ptr);
+
+ public:
+  explicit P2PSecureConsumerSocket(interface::ConsumerSocket *consumer,
+                                   int handshake_protocol,
+                                   int transport_protocol);
+
+  ~P2PSecureConsumerSocket();
+
+  int consume(const Name &name) override;
+
+  int asyncConsume(const Name &name) override;
+
+  void registerPrefix(const Prefix &producer_namespace);
+
+  int setSocketOption(
+      int socket_option_key,
+      interface::ConsumerSocket::ReadCallback *socket_option_value) override;
+
+  using ConsumerSocket::getSocketOption;
+  using ConsumerSocket::setSocketOption;
+
+ protected:
+  /* Callback invoked once an interest has been received and its payload
+   * decrypted */
+  ConsumerInterestCallback on_interest_input_decrypted_;
+  ConsumerInterestCallback on_interest_process_decrypted_;
+
+ private:
+  Name name_;
+  std::shared_ptr<TLSConsumerSocket> tls_consumer_;
+
+  /* SSL handle */
+  SSL *ssl_;
+  SSL_CTX *ctx_;
+  BIO_METHOD *bio_meth_;
+
+  /* Chain of MemBuf to be used as a temporary buffer to pass descypted data
+   * from the underlying layer to the application */
+  utils::ObjectPool<utils::MemBuf> buf_pool_;
+  std::unique_ptr<utils::MemBuf> decrypted_content_;
+
+  /* Chain of MemBuf holding the payload to be written into interest or data */
+  std::unique_ptr<utils::MemBuf> payload_;
+
+  /* Chain of MemBuf holding the data retrieved from the underlying layer */
+  std::unique_ptr<utils::MemBuf> head_;
+
+  bool something_to_read_;
+
+  bool content_downloaded_;
+
+  double old_max_win_;
+
+  double old_current_win_;
+
+  uint32_t random_suffix_;
+
+  ip_prefix_t secure_prefix_;
+
+  Prefix producer_namespace_;
+
+  interface::ConsumerSocket::ReadCallback *read_callback_decrypted_;
+
+  std::mutex mtx_;
+
+  /* Condition variable for the wait */
+  std::condition_variable cv_;
+
+  int protocol_;
+
+  void setInterestPayload(interface::ConsumerSocket &c,
+                          const core::Interest &interest);
+
+  static int addHicnKeyIdCb(SSL *s, unsigned int ext_type, unsigned int context,
+                            const unsigned char **out, size_t *outlen, X509 *x,
+                            size_t chainidx, int *al, void *add_arg);
+
+  static void freeHicnKeyIdCb(SSL *s, unsigned int ext_type,
+                              unsigned int context, const unsigned char *out,
+                              void *add_arg);
+
+  static int parseHicnKeyIdCb(SSL *s, unsigned int ext_type,
+                              unsigned int context, const unsigned char *in,
+                              size_t inlen, X509 *x, size_t chainidx, int *al,
+                              void *add_arg);
+
+  virtual void getReadBuffer(uint8_t **application_buffer,
+                             size_t *max_length) override;
+
+  virtual void readDataAvailable(size_t length) noexcept override;
+
+  virtual size_t maxBufferSize() const override;
+
+  virtual void readBufferAvailable(
+      std::unique_ptr<utils::MemBuf> &&buffer) noexcept override;
+
+  virtual void readError(const std::error_code ec) noexcept override;
+
+  virtual void readSuccess(std::size_t total_size) noexcept override;
+  virtual bool isBufferMovable() noexcept override;
+
+  int download_content(const Name &name);
+};
+
+}  // namespace implementation
+
+}  // end namespace transport