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/*
* Copyright (c) 2017-2019 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 <implementation/socket_producer.h>
#include <openssl/ssl.h>
#include <condition_variable>
#include <mutex>
namespace transport {
namespace implementation {
class P2PSecureProducerSocket;
class TLSProducerSocket : virtual public ProducerSocket {
friend class P2PSecureProducerSocket;
public:
explicit TLSProducerSocket(interface::ProducerSocket *producer_socket,
P2PSecureProducerSocket *parent,
const Name &handshake_name);
~TLSProducerSocket();
uint32_t produceStream(const Name &content_name, const uint8_t *buffer,
size_t buffer_size, bool is_last = true,
uint32_t start_offset = 0) override {
return produceStream(content_name,
utils::MemBuf::copyBuffer(buffer, buffer_size),
is_last, start_offset);
}
uint32_t produceStream(const Name &content_name,
std::unique_ptr<utils::MemBuf> &&buffer,
bool is_last = true,
uint32_t start_offset = 0) override;
virtual void accept();
virtual int async_accept();
virtual int setSocketOption(
int socket_option_key,
ProducerInterestCallback socket_option_value) override;
virtual int setSocketOption(
int socket_option_key,
ProducerContentCallback socket_option_value) override;
virtual int getSocketOption(
int socket_option_key,
ProducerContentCallback **socket_option_value) override;
int getSocketOption(int socket_option_key,
ProducerContentCallback &socket_option_value);
int getSocketOption(int socket_option_key,
ProducerInterestCallback &socket_option_value);
using ProducerSocket::getSocketOption;
// using ProducerSocket::onInterest;
using ProducerSocket::setSocketOption;
protected:
enum HandshakeState {
UNINITIATED,
CLIENT_HELLO, // when CLIENT_HELLO interest has been received
CLIENT_FINISHED, // when CLIENT_FINISHED interest has been received
SERVER_FINISHED, // when handshake is done
};
/* Callback invoked once an interest has been received and its payload
* decrypted */
ProducerInterestCallback on_interest_input_decrypted_;
ProducerInterestCallback on_interest_process_decrypted_;
ProducerContentCallback on_content_produced_application_;
std::mutex mtx_;
/* Condition variable for the wait */
std::condition_variable cv_;
/* Bool variable, true if there is something to read (an interest arrived) */
bool something_to_read_;
/* Bool variable, true if CLIENT_FINISHED interest has been received */
HandshakeState handshake_state_;
/* First interest that open a secure connection */
transport::core::Name name_;
/* SSL handle */
SSL *ssl_;
SSL_CTX *ctx_;
Packet::MemBufPtr handshake_packet_;
std::unique_ptr<utils::MemBuf> head_;
std::uint32_t last_segment_;
std::uint32_t key_id_;
std::thread *handshake;
P2PSecureProducerSocket *parent_;
bool first_;
Name handshake_name_;
int tls_chunks_;
int to_call_oncontentproduced_;
bool still_writing_;
utils::EventThread encryption_thread_;
utils::EventThread async_thread_;
void onInterest(ProducerSocket &p, Interest &interest);
void cacheMiss(interface::ProducerSocket &p, Interest &interest);
/* Return the number of read bytes in readbytes */
static int read(BIO *b, char *buf, size_t size, size_t *readbytes);
/* Return the number of read bytes in the return param */
static int readOld(BIO *h, char *buf, int size);
/* Return the number of written bytes in written */
static int write(BIO *b, const char *buf, size_t size, size_t *written);
/* Return the number of written bytes in the return param */
static int writeOld(BIO *h, const char *buf, int num);
static long ctrl(BIO *b, int cmd, long num, void *ptr);
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);
void onContentProduced(interface::ProducerSocket &p,
const std::error_code &err, uint64_t bytes_written);
HandshakeState getHandshakeState();
};
} // namespace implementation
} // end namespace transport
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