Simple-Web-Server/client_https.hpp at master · MarkRiddoch/Simple-Web-Server · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
#ifndef CLIENT_HTTPS_HPP
#define CLIENT_HTTPS_HPP

#include "client_http.hpp"

#ifdef USE_STANDALONE_ASIO
#include <asio/ssl.hpp>
#else
#include <boost/asio/ssl.hpp>
#endif

namespace SimpleWeb {
  using HTTPS = asio::ssl::stream<asio::ip::tcp::socket>;

  template <>
  class Client<HTTPS> : public ClientBase<HTTPS> {
  public:
    Client(const std::string &server_port_path, bool verify_certificate = true, const std::string &cert_file = std::string(),
           const std::string &private_key_file = std::string(), const std::string &verify_file = std::string())
        : ClientBase<HTTPS>::ClientBase(server_port_path, 443), context(asio::ssl::context::tlsv12) {
      if(cert_file.size() > 0 && private_key_file.size() > 0) {
        context.use_certificate_chain_file(cert_file);
        context.use_private_key_file(private_key_file, asio::ssl::context::pem);
      }

      if(verify_certificate)
        context.set_verify_callback(asio::ssl::rfc2818_verification(host));

      if(verify_file.size() > 0)
        context.load_verify_file(verify_file);
      else
        context.set_default_verify_paths();

      if(verify_file.size() > 0 || verify_certificate)
        context.set_verify_mode(asio::ssl::verify_peer);
      else
        context.set_verify_mode(asio::ssl::verify_none);
    }

  protected:
    asio::ssl::context context;

    std::shared_ptr<Connection> create_connection() noexcept override {
      return std::make_shared<Connection>(handler_runner, config.timeout, *io_service, context);
    }

    void connect(const std::shared_ptr<Session> &session) override {
      if(!session->connection->socket->lowest_layer().is_open()) {
        auto resolver = std::make_shared<asio::ip::tcp::resolver>(*io_service);
        resolver->async_resolve(*query, [this, session, resolver](const error_code &ec, asio::ip::tcp::resolver::iterator it) {
          auto lock = session->connection->handler_runner->continue_lock();
          if(!lock)
            return;
          if(!ec) {
            session->connection->set_timeout(this->config.timeout_connect);
            asio::async_connect(session->connection->socket->lowest_layer(), it, [this, session, resolver](const error_code &ec, asio::ip::tcp::resolver::iterator /*it*/) {
              session->connection->cancel_timeout();
              auto lock = session->connection->handler_runner->continue_lock();
              if(!lock)
                return;
              if(!ec) {
                asio::ip::tcp::no_delay option(true);
                error_code ec;
                session->connection->socket->lowest_layer().set_option(option, ec);

                if(!this->config.proxy_server.empty()) {
                  auto write_buffer = std::make_shared<asio::streambuf>();
                  std::ostream write_stream(write_buffer.get());
                  auto host_port = this->host + ':' + std::to_string(this->port);
                  write_stream << "CONNECT " + host_port + " HTTP/1.1\r\n"
                               << "Host: " << host_port << "\r\n\r\n";
                  session->connection->set_timeout(this->config.timeout_connect);
                  asio::async_write(session->connection->socket->next_layer(), *write_buffer, [this, session, write_buffer](const error_code &ec, size_t /*bytes_transferred*/) {
                    session->connection->cancel_timeout();
                    auto lock = session->connection->handler_runner->continue_lock();
                    if(!lock)
                      return;
                    if(!ec) {
                      std::shared_ptr<Response> response(new Response());
                      session->connection->set_timeout(this->config.timeout_connect);
                      asio::async_read_until(session->connection->socket->next_layer(), response->content_buffer, "\r\n\r\n", [this, session, response](const error_code &ec, size_t /*bytes_transferred*/) {
                        session->connection->cancel_timeout();
                        auto lock = session->connection->handler_runner->continue_lock();
                        if(!lock)
                          return;
                        if(!ec) {
                          if(!ResponseMessage::parse(response->content, response->http_version, response->status_code, response->header))
                            session->callback(session->connection, make_error_code::make_error_code(errc::protocol_error));
                          else {
                            if(response->status_code.empty() || response->status_code.compare(0, 3, "200") != 0)
                              session->callback(session->connection, make_error_code::make_error_code(errc::permission_denied));
                            else
                              this->handshake(session);
                          }
                        }
                        else
                          session->callback(session->connection, ec);
                      });
                    }
                    else
                      session->callback(session->connection, ec);
                  });
                }
                else
                  this->handshake(session);
              }
              else
                session->callback(session->connection, ec);
            });
          }
          else
            session->callback(session->connection, ec);
        });
      }
      else
        write(session);
    }

    void handshake(const std::shared_ptr<Session> &session) {
      SSL_set_tlsext_host_name(session->connection->socket->native_handle(), this->host.c_str());

      session->connection->set_timeout(this->config.timeout_connect);
      session->connection->socket->async_handshake(asio::ssl::stream_base::client, [this, session](const error_code &ec) {
        session->connection->cancel_timeout();
        auto lock = session->connection->handler_runner->continue_lock();
        if(!lock)
          return;
        if(!ec)
          this->write(session);
        else
          session->callback(session->connection, ec);
      });
    }
  };
} // namespace SimpleWeb

#endif /* CLIENT_HTTPS_HPP */