From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:45:59 +0200
Subject: Adding upstream version 16.2.11+ds.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/seastar/demos/tls_echo_server.hh | 121 +++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/seastar/demos/tls_echo_server.hh

(limited to 'src/seastar/demos/tls_echo_server.hh')

diff --git a/src/seastar/demos/tls_echo_server.hh b/src/seastar/demos/tls_echo_server.hh
new file mode 100644
index 000000000..e7185dac9
--- /dev/null
+++ b/src/seastar/demos/tls_echo_server.hh
@@ -0,0 +1,121 @@
+/*
+ * This file is open source software, licensed to you under the terms
+ * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
+ * distributed with this work for additional information regarding copyright
+ * ownership.  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.
+ */
+/*
+ * Copyright 2017 ScyllaDB
+ */
+#pragma once
+
+#include <seastar/core/sstring.hh>
+#include <seastar/core/do_with.hh>
+#include <seastar/core/sharded.hh>
+#include <seastar/core/gate.hh>
+#include <seastar/core/loop.hh>
+#include <seastar/net/tls.hh>
+#include <seastar/util/log.hh>
+#include <iostream>
+
+using namespace seastar;
+
+struct streams {
+    connected_socket s;
+    input_stream<char> in;
+    output_stream<char> out;
+
+    streams(connected_socket cs) : s(std::move(cs)), in(s.input()), out(s.output())
+    {}
+};
+
+class echoserver {
+    server_socket _socket;
+    shared_ptr<tls::server_credentials> _certs;
+    seastar::gate _gate;
+    bool _stopped = false;
+    bool _verbose = false;
+public:
+    echoserver(bool verbose = false)
+            : _certs(make_shared<tls::server_credentials>(make_shared<tls::dh_params>()))
+            , _verbose(verbose)
+    {}
+
+    future<> listen(socket_address addr, sstring crtfile, sstring keyfile, tls::client_auth ca = tls::client_auth::NONE) {
+        _certs->set_client_auth(ca);
+        return _certs->set_x509_key_file(crtfile, keyfile, tls::x509_crt_format::PEM).then([this, addr] {
+            ::listen_options opts;
+            opts.reuse_address = true;
+
+            _socket = tls::listen(_certs, addr, opts);
+
+            // Listen in background.
+            (void)repeat([this] {
+                if (_stopped) {
+                    return make_ready_future<stop_iteration>(stop_iteration::yes);
+                }
+                return with_gate(_gate, [this] {
+                    return _socket.accept().then([this](accept_result ar) {
+                        ::connected_socket s = std::move(ar.connection);
+                        socket_address a = std::move(ar.remote_address);
+                        if (_verbose) {
+                            std::cout << "Got connection from "<< a << std::endl;
+                        }
+                        auto strms = make_lw_shared<streams>(std::move(s));
+                        return repeat([strms, this]() {
+                            return strms->in.read().then([this, strms](temporary_buffer<char> buf) {
+                                if (buf.empty()) {
+                                    if (_verbose) {
+                                        std::cout << "EOM" << std::endl;
+                                    }
+                                    return make_ready_future<stop_iteration>(stop_iteration::yes);
+                                }
+                                sstring tmp(buf.begin(), buf.end());
+                                if (_verbose) {
+                                    std::cout << "Read " << tmp.size() << "B" << std::endl;
+                                }
+                                return strms->out.write(tmp).then([strms]() {
+                                    return strms->out.flush();
+                                }).then([] {
+                                    return make_ready_future<stop_iteration>(stop_iteration::no);
+                                });
+                            });
+                        }).then([strms]{
+                            return strms->out.close();
+                        }).handle_exception([](auto ep) {
+                        }).finally([this, strms]{
+                            if (_verbose) {
+                                std::cout << "Ending session" << std::endl;
+                            }
+                            return strms->in.close();
+                        });
+                    }).handle_exception([this](auto ep) {
+                        if (!_stopped) {
+                            std::cerr << "Error: " << ep << std::endl;
+                        }
+                    }).then([this] {
+                        return make_ready_future<stop_iteration>(_stopped ? stop_iteration::yes : stop_iteration::no);
+                    });
+                });
+            });
+            return make_ready_future();
+        });
+    }
+
+    future<> stop() {
+        _stopped = true;
+        _socket.abort_accept();
+        return _gate.close();
+    }
+};
-- 
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