1 files changed, 266 insertions, 0 deletions
diff --git a/doc/examples/asio_tls_server.cpp b/doc/examples/asio_tls_server.cpp
new file mode 100644
index 000000000..9a1c3cefd
--- /dev/null
+++ b/doc/examples/asio_tls_server.cpp
@@ -0,0 +1,266 @@
+#include <iostream>
+#include <string>
+#include <boost/bind.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include <asio.hpp>
+
+#include <botan/tls_server.h>
+#include <botan/x509cert.h>
+#include <botan/pkcs8.h>
+#include <botan/auto_rng.h>
+#include <botan/init.h>
+
+using Botan::byte;
+using asio::ip::tcp;
+
+class tls_server_session : public boost::enable_shared_from_this<tls_server_session>
+   {
+   public:
+      typedef boost::shared_ptr<tls_server_session> pointer;
+
+      static pointer create(asio::io_service& io_service,
+                            Botan::TLS_Session_Manager& session_manager,
+                            Botan::Credentials_Manager& credentials,
+                            Botan::TLS_Policy& policy,
+                            Botan::RandomNumberGenerator& rng)
+         {
+         return pointer(
+            new tls_server_session(
+               io_service,
+               session_manager,
+               credentials,
+               policy,
+               rng)
+            );
+         }
+
+      tcp::socket& socket()
+         {
+         return m_socket;
+         }
+
+      void start()
+         {
+         m_socket.async_read_some(
+            asio::buffer(m_read_buf, sizeof(m_read_buf)),
+            boost::bind(&tls_server_session::handle_read, shared_from_this(),
+                        asio::placeholders::error,
+                        asio::placeholders::bytes_transferred));
+         }
+
+   private:
+      tls_server_session(asio::io_service& io_service,
+                         Botan::TLS_Session_Manager& session_manager,
+                         Botan::Credentials_Manager& credentials,
+                         Botan::TLS_Policy& policy,
+                         Botan::RandomNumberGenerator& rng) :
+         m_socket(io_service),
+         m_tls(boost::bind(&tls_server_session::tls_output_wanted, this, _1, _2),
+               boost::bind(&tls_server_session::tls_data_recv, this, _1, _2, _3),
+               boost::bind(&tls_server_session::tls_handshake_complete, this, _1),
+               session_manager,
+               credentials,
+               policy,
+               rng)
+         {
+         }
+
+      void handle_read(const asio::error_code& error,
+                       size_t bytes_transferred)
+         {
+         if(!error)
+            {
+            m_tls.received_data(m_read_buf, bytes_transferred);
+
+            m_socket.async_read_some(
+               asio::buffer(m_read_buf, sizeof(m_read_buf)),
+               boost::bind(&tls_server_session::handle_read, shared_from_this(),
+                           asio::placeholders::error,
+                           asio::placeholders::bytes_transferred));
+            }
+         else
+            printf("Error in read: %s\n", error.message().c_str());
+         }
+
+      void handle_write(const asio::error_code& error)
+         {
+         if(!error)
+            {
+
+            }
+         else
+            printf("Error in write: %s\n", error.message().c_str());
+         }
+
+      void tls_output_wanted(const byte buf[], size_t buf_len)
+         {
+         memcpy(&m_write_buf[0], buf, buf_len);
+
+         asio::async_write(m_socket,
+                           asio::buffer(m_write_buf, buf_len),
+                           boost::bind(&tls_server_session::handle_write, this,
+                                       asio::placeholders::error));
+
+         }
+
+      void tls_data_recv(const byte buf[], size_t buf_len, Botan::u16bit alert_info)
+         {
+         if(buf_len == 0 && alert_info != Botan::NULL_ALERT)
+            printf("Alert: %d\n", alert_info);
+
+         printf("Got %d bytes: ", (int)buf_len);
+         for(size_t i = 0; i != buf_len; ++i)
+            {
+            if(isprint(buf[i]))
+               printf("%c", buf[i]);
+            }
+         printf("\n");
+         }
+
+      bool tls_handshake_complete(const Botan::TLS_Session& session)
+         {
+         printf("handshake complete\n");
+         return true;
+         }
+
+      tcp::socket m_socket;
+
+      Botan::TLS_Server m_tls;
+
+      unsigned char m_read_buf[Botan::MAX_TLS_RECORD_SIZE];
+      unsigned char m_write_buf[Botan::MAX_TLS_RECORD_SIZE];
+   };
+
+class Credentials_Manager_Simple : public Botan::Credentials_Manager
+   {
+   public:
+      Credentials_Manager_Simple(Botan::RandomNumberGenerator& rng) : rng(rng) {}
+
+      std::vector<Botan::X509_Certificate> cert_chain(
+         const std::string& cert_key_type,
+         const std::string& type,
+         const std::string& context)
+         {
+         const std::string hostname = (context == "" ? "localhost" : context);
+
+         Botan::X509_Certificate cert(hostname + ".crt");
+         Botan::Private_Key* key = Botan::PKCS8::load_key(hostname + ".key", rng);
+
+         certs_and_keys[cert] = key;
+
+         std::vector<Botan::X509_Certificate> certs;
+         certs.push_back(cert);
+         return certs;
+         }
+
+      Botan::Private_Key* private_key_for(const Botan::X509_Certificate& cert,
+                                          const std::string& type,
+                                          const std::string& context)
+         {
+         return certs_and_keys[cert];
+         }
+
+   private:
+      Botan::RandomNumberGenerator& rng;
+      std::map<Botan::X509_Certificate, Botan::Private_Key*> certs_and_keys;
+   };
+
+class Server_TLS_Policy : public Botan::TLS_Policy
+   {
+   public:
+      //bool require_client_auth() const { return true; }
+
+      bool check_cert(const std::vector<Botan::X509_Certificate>& certs) const
+         {
+         for(size_t i = 0; i != certs.size(); ++i)
+            {
+            std::cout << certs[i].to_string();
+            }
+
+         std::cout << "Warning: not checking cert signatures\n";
+
+         return true;
+         }
+   };
+
+class tls_server
+   {
+   public:
+      typedef tls_server_session session;
+
+      tls_server(asio::io_service& io_service, unsigned short port) :
+         m_acceptor(io_service, tcp::endpoint(tcp::v4(), port)),
+         m_creds(m_rng)
+         {
+         session::pointer new_session = make_session();
+
+         m_acceptor.async_accept(
+            new_session->socket(),
+            boost::bind(
+               &tls_server::handle_accept,
+               this,
+               new_session,
+               asio::placeholders::error)
+            );
+         }
+
+   private:
+      session::pointer make_session()
+         {
+         return session::create(
+            m_acceptor.io_service(),
+            m_session_manager,
+            m_creds,
+            m_policy,
+            m_rng
+            );
+         }
+
+      void handle_accept(session::pointer new_session,
+                         const asio::error_code& error)
+         {
+         if (!error)
+            {
+            new_session->start();
+
+            new_session = make_session();
+
+            m_acceptor.async_accept(
+               new_session->socket(),
+               boost::bind(
+                  &tls_server::handle_accept,
+                  this,
+                  new_session,
+                  asio::placeholders::error)
+               );
+            }
+         }
+
+      tcp::acceptor m_acceptor;
+
+      Botan::AutoSeeded_RNG m_rng;
+      Botan::TLS_Session_Manager_In_Memory m_session_manager;
+      Server_TLS_Policy m_policy;
+      Credentials_Manager_Simple m_creds;
+   };
+
+int main()
+   {
+   try
+      {
+      Botan::LibraryInitializer init;
+      asio::io_service io_service;
+
+      unsigned short port = 4433;
+      tls_server server(io_service, port);
+      io_service.run();
+      }
+   catch (std::exception& e)
+      {
+      std::cerr << e.what() << std::endl;
+      }
+
+   return 0;
+   }
+