13429216726

Committed 20 Feb 2025 06:22AM UTC coverage: 91.647% (+0.003%) from 91.644%

Build # 13429216726

Build Type

Pull #4660

github

Committed by

web-flow

Commit Message

Merge b720e7b81 into a2981b3c6

Pull Request Pull Request #4660: Consolidation and Enhancement of BSD Socket Layer

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70.24

/src/cli/tls_server.cpp

/*
* TLS echo server using BSD sockets
* (C) 2014 Jack Lloyd
*     2017 René Korthaus, Rohde & Schwarz Cybersecurity
*     2023 René Meusel, Rohde & Schwarz Cybersecurity
      2025 Kagan Can Sit
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include "cli.h"
#include "sandbox.h"

#include <botan/internal/target_info.h>

#if defined(BOTAN_TARGET_OS_HAS_SOCKETS)
   #include <sys/socket.h>
#endif

#if defined(BOTAN_HAS_TLS) && defined(BOTAN_TARGET_OS_HAS_FILESYSTEM) && defined(BOTAN_TARGET_OS_HAS_SOCKETS)

   #if defined(SO_MARK) || defined(SO_USER_COOKIE) || defined(SO_RTABLE)
      #if defined(SO_MARK)
         #define BOTAN_SO_SOCKETID SO_MARK
      #elif defined(SO_USER_COOKIE)
         #define BOTAN_SO_SOCKETID SO_USER_COOKIE
      #else
         #define BOTAN_SO_SOCKETID SO_RTABLE
      #endif
   #endif

   #include <botan/hex.h>
   #include <botan/mem_ops.h>
   #include <botan/tls_callbacks.h>
   #include <botan/tls_policy.h>
   #include <botan/tls_server.h>
   #include <botan/tls_session_manager_memory.h>

   #include <chrono>
   #include <fstream>
   #include <list>
   #include <memory>

   #include "socket_utils.h"
   #include "tls_helpers.h"

namespace Botan_CLI {

class TLS_Server;

namespace {

class Callbacks : public Botan::TLS::Callbacks {
   public:
      Callbacks(TLS_Server& server_command) : m_server_command(server_command) {}

      std::ostream& output();
      void send(std::span<const uint8_t> buffer);
      void push_pending_output(std::string line);

      void tls_session_established(const Botan::TLS::Session_Summary& session) override {
         output() << "Handshake complete, " << session.version().to_string() << " using "
                  << session.ciphersuite().to_string();

         if(const auto& psk = session.external_psk_identity()) {
            output() << " (utilized PSK identity: " << maybe_hex_encode(psk.value()) << ")";
         }

         output() << std::endl;

         if(const auto& session_id = session.session_id(); !session_id.empty()) {
            output() << "Session ID " << Botan::hex_encode(session_id.get()) << std::endl;
         }

         if(const auto& session_ticket = session.session_ticket()) {
            output() << "Session ticket " << Botan::hex_encode(session_ticket->get()) << std::endl;
         }
      }

      void tls_record_received(uint64_t /*seq_no*/, std::span<const uint8_t> input) override {
         for(size_t i = 0; i != input.size(); ++i) {
            const char c = static_cast<char>(input[i]);
            m_line_buf += c;
            if(c == '\n') {
               push_pending_output(std::exchange(m_line_buf, {}));
            }
         }
      }

      void tls_emit_data(std::span<const uint8_t> buf) override { send(buf); }

      void tls_alert(Botan::TLS::Alert alert) override { output() << "Alert: " << alert.type_string() << std::endl; }

      std::string tls_server_choose_app_protocol(const std::vector<std::string>& /*client_protos*/) override {
         // we ignore whatever the client sends here
         return "echo/0.1";
      }

      void tls_verify_raw_public_key(const Botan::Public_Key& raw_public_key,
                                     Botan::Usage_Type /* usage */,
                                     std::string_view /* hostname */,
                                     const Botan::TLS::Policy& /* policy */) override {
         const auto fingerprint = raw_public_key.fingerprint_public("SHA-256");
         output() << "received Raw Public Key (" << fingerprint << ")\n";
      }

   private:
      TLS_Server& m_server_command;
      std::string m_line_buf;
};

}  // namespace

class TLS_Server final : public Command {
   public:
   #if defined(BOTAN_SO_SOCKETID)
      TLS_Server() :
            Command(
               "tls_server cert-or-pubkey key --port=443 --psk= --psk-identity= --psk-prf=SHA-256 --type=tcp --policy=default --dump-traces= --max-clients=0 --socket-id=0")
   #else
      TLS_Server() :
            Command(
               "tls_server cert-or-pubkey key --port=443 --psk= --psk-identity= --psk-prf=SHA-256 --type=tcp --policy=default --dump-traces= --max-clients=0")
   #endif
      {
         Socket_Utils::init();
      }

      ~TLS_Server() override { Socket_Utils::cleanup(); }

      TLS_Server(const TLS_Server& other) = delete;
      TLS_Server(TLS_Server&& other) = delete;
      TLS_Server& operator=(const TLS_Server& other) = delete;
      TLS_Server& operator=(TLS_Server&& other) = delete;

      std::string group() const override { return "tls"; }

      std::string description() const override { return "Accept TLS/DTLS connections from TLS/DTLS clients"; }

      void go() override {
         const std::string server_cred = get_arg("cert-or-pubkey");
         const std::string server_key = get_arg("key");
         const uint16_t port = get_arg_u16("port");
         const size_t max_clients = get_arg_sz("max-clients");
         const std::string transport = get_arg("type");
         const std::string dump_traces_to = get_arg("dump-traces");
         auto psk = [this]() -> std::optional<Botan::secure_vector<uint8_t>> {
            auto psk_hex = get_arg_maybe("psk");
            if(psk_hex) {
               return Botan::hex_decode_locked(psk_hex.value());
            } else {
               return {};
            }
         }();
         const std::optional<std::string> psk_identity = get_arg_maybe("psk-identity");
         const std::optional<std::string> psk_prf = get_arg_maybe("psk-prf");

   #if defined(BOTAN_SO_SOCKETID)
         m_socket_id = static_cast<uint32_t>(get_arg_sz("socket-id"));
   #endif

         if(transport != "tcp" && transport != "udp") {
            throw CLI_Usage_Error("Invalid transport type '" + transport + "' for TLS");
         }

         m_is_tcp = (transport == "tcp");

         auto policy = load_tls_policy(get_arg("policy"));
         auto session_manager =
            std::make_shared<Botan::TLS::Session_Manager_In_Memory>(rng_as_shared());  // TODO sqlite3
         auto creds =
            std::make_shared<Basic_Credentials_Manager>(server_cred, server_key, std::move(psk), psk_identity, psk_prf);
         auto callbacks = std::make_shared<Callbacks>(*this);

         if(!m_sandbox.init()) {
            error_output() << "Failed sandboxing\n";
            return;
         }

         socket_type server_fd = make_server_socket(port);
         size_t clients_served = 0;

         output() << "Listening for new connections on " << transport << " port " << port << std::endl;

         while(true) {
            if(max_clients > 0 && clients_served >= max_clients) {
               break;
            }

            if(m_is_tcp) {
               m_socket = ::accept(server_fd, nullptr, nullptr);
            } else {
               struct sockaddr_in from;
               socklen_t from_len = sizeof(sockaddr_in);

               void* peek_buf = nullptr;
               size_t peek_len = 0;

   #if defined(BOTAN_TARGET_OS_IS_MACOS)
               // macOS handles zero size buffers differently - it will return 0 even if there's no incoming data,
               // and after that connect() will fail as sockaddr_in from is not initialized
               int dummy;
               peek_buf = &dummy;
               peek_len = sizeof(dummy);
   #endif

               if(::recvfrom(server_fd,
                             static_cast<char*>(peek_buf),
                             static_cast<sendrecv_len_type>(peek_len),
                             MSG_PEEK,
                             reinterpret_cast<struct sockaddr*>(&from),
                             &from_len) != 0) {
                  throw CLI_Error("Could not peek next packet");
               }

               if(::connect(server_fd, reinterpret_cast<struct sockaddr*>(&from), from_len) != 0) {
                  throw CLI_Error("Could not connect UDP socket");
               }
               m_socket = server_fd;
            }

            clients_served++;

            Botan::TLS::Server server(callbacks, session_manager, creds, policy, rng_as_shared(), m_is_tcp == false);

            std::unique_ptr<std::ostream> dump_stream;

            if(!dump_traces_to.empty()) {
               auto now = std::chrono::system_clock::now().time_since_epoch();
               uint64_t timestamp = std::chrono::duration_cast<std::chrono::nanoseconds>(now).count();
               const std::string dump_file = dump_traces_to + "/tls_" + std::to_string(timestamp) + ".bin";
               dump_stream = std::make_unique<std::ofstream>(dump_file.c_str());
            }

            try {
               while(!server.is_closed()) {
                  try {
                     uint8_t buf[4 * 1024] = {0};
                     ssize_t got = ::recv(m_socket, Botan::cast_uint8_ptr_to_char(buf), sizeof(buf), 0);

                     if(got == -1) {
                        error_output() << "Error in socket read - " << Socket_Utils::get_last_error() << std::endl;
                        break;
                     }

                     if(got == 0) {
                        error_output() << "EOF on socket" << std::endl;
                        break;
                     }

                     if(dump_stream) {
                        dump_stream->write(reinterpret_cast<const char*>(buf), got);
                     }

                     server.received_data(buf, got);

                     while(server.is_active() && !m_pending_output.empty()) {
                        std::string output = m_pending_output.front();
                        m_pending_output.pop_front();
                        server.send(output);

                        if(output == "quit\n") {
                           server.close();
                        }
                     }
                  } catch(std::exception& e) {
                     error_output() << "Connection problem: " << e.what() << std::endl;
                     if(m_is_tcp) {
                        Socket_Utils::close_socket(m_socket);
                        m_socket = Socket_Utils::invalid_socket();
                     }
                  }
               }
            } catch(Botan::Exception& e) {
               error_output() << "Connection failed: " << e.what() << "\n";
            }

            if(m_is_tcp) {
               Socket_Utils::close_socket(m_socket);
               m_socket = Socket_Utils::invalid_socket();
            }
         }

         Socket_Utils::close_socket(server_fd);
      }

   public:
      using Command::flag_set;
      using Command::output;

      void send(std::span<const uint8_t> buf) {
         if(m_is_tcp) {
            ssize_t sent = ::send(m_socket, buf.data(), static_cast<sendrecv_len_type>(buf.size()), MSG_NOSIGNAL);

            if(sent == -1) {
               error_output() << "Error writing to socket - " << Socket_Utils::get_last_error() << std::endl;
            } else if(sent != static_cast<ssize_t>(buf.size())) {
               error_output() << "Packet of length " << buf.size() << " truncated to " << sent << std::endl;
            }
         } else {
            while(!buf.empty()) {
               ssize_t sent = ::send(m_socket, buf.data(), static_cast<sendrecv_len_type>(buf.size()), MSG_NOSIGNAL);

               if(sent == -1) {
                  if(errno == EINTR) {
                     sent = 0;
                  } else {
                     throw CLI_Error("Socket write failed");
                  }
               }

               buf = buf.subspan(sent);
            }
         }
      }

      void push_pending_output(std::string line) { m_pending_output.emplace_back(std::move(line)); }

   private:
      // Import socket operation types from Socket_Platform namespace
      using socket_type = Socket_Utils::socket_type;
      using socket_op_ret_type = Socket_Utils::socket_op_ret_type;
      using socklen_type = Socket_Utils::socklen_type;
      using sendrecv_len_type = Socket_Utils::sendrecv_len_type;

      socket_type make_server_socket(uint16_t port) {
         const int type = m_is_tcp ? SOCK_STREAM : SOCK_DGRAM;

         socket_type fd = ::socket(PF_INET, type, 0);
         if(fd == Socket_Utils::invalid_socket()) {
            throw CLI_Error("Unable to acquire socket");
         }

         sockaddr_in socket_info;
         Botan::clear_mem(&socket_info, 1);
         socket_info.sin_family = AF_INET;
         socket_info.sin_port = htons(port);

         // FIXME: support limiting listeners
         socket_info.sin_addr.s_addr = INADDR_ANY;

         if(::bind(fd, reinterpret_cast<struct sockaddr*>(&socket_info), sizeof(struct sockaddr)) != 0) {
            Socket_Utils::close_socket(fd);
            throw CLI_Error("server bind failed");
         }

         if(m_is_tcp) {
            constexpr int backlog = std::min(100, SOMAXCONN);
            if(::listen(fd, backlog) != 0) {
               Socket_Utils::close_socket(fd);
               throw CLI_Error("listen failed");
            }
         }
         if(m_socket_id > 0) {
   #if defined(BOTAN_SO_SOCKETID)
            if(::setsockopt(fd,
                            SOL_SOCKET,
                            BOTAN_SO_SOCKETID,
                            reinterpret_cast<const void*>(&m_socket_id),
                            sizeof(m_socket_id)) != 0) {
               // Failed but not world-ending issue
               output() << "set socket identifier setting failed" << std::endl;
            }
   #endif
         }
         return fd;
      }

      socket_type m_socket = Socket_Utils::invalid_socket();
      bool m_is_tcp = false;
      uint32_t m_socket_id = 0;
      std::list<std::string> m_pending_output;
      Sandbox m_sandbox;
};

namespace {

std::ostream& Callbacks::output() {
   return m_server_command.output();
}

void Callbacks::send(std::span<const uint8_t> buffer) {
   m_server_command.send(buffer);
}

void Callbacks::push_pending_output(std::string line) {
   m_server_command.push_pending_output(std::move(line));
}

}  // namespace

BOTAN_REGISTER_COMMAND("tls_server", TLS_Server);

}  // namespace Botan_CLI

#endif

1	/*
2	* TLS echo server using BSD sockets
3	* (C) 2014 Jack Lloyd
4	* 2017 René Korthaus, Rohde & Schwarz Cybersecurity
5	* 2023 René Meusel, Rohde & Schwarz Cybersecurity
6	2025 Kagan Can Sit
7	*
8	* Botan is released under the Simplified BSD License (see license.txt)
9	*/
10
11	#include "cli.h"
12	#include "sandbox.h"
13
14	#include <botan/internal/target_info.h>
15
16	#if defined(BOTAN_TARGET_OS_HAS_SOCKETS)
17	#include <sys/socket.h>
18	#endif
19
20	#if defined(BOTAN_HAS_TLS) && defined(BOTAN_TARGET_OS_HAS_FILESYSTEM) && defined(BOTAN_TARGET_OS_HAS_SOCKETS)
21
22	#if defined(SO_MARK) \|\| defined(SO_USER_COOKIE) \|\| defined(SO_RTABLE)
23	#if defined(SO_MARK)
24	#define BOTAN_SO_SOCKETID SO_MARK
25	#elif defined(SO_USER_COOKIE)
26	#define BOTAN_SO_SOCKETID SO_USER_COOKIE
27	#else
28	#define BOTAN_SO_SOCKETID SO_RTABLE
29	#endif
30	#endif
31
32	#include <botan/hex.h>
33	#include <botan/mem_ops.h>
34	#include <botan/tls_callbacks.h>
35	#include <botan/tls_policy.h>
36	#include <botan/tls_server.h>
37	#include <botan/tls_session_manager_memory.h>
38
39	#include <chrono>
40	#include <fstream>
41	#include <list>
42	#include <memory>
43
44	#include "socket_utils.h"
45	#include "tls_helpers.h"
46
47	namespace Botan_CLI {
48
49	class TLS_Server;
50
51	namespace {
52
53	class Callbacks : public Botan::TLS::Callbacks {	1✔
54	public:
55	Callbacks(TLS_Server& server_command) : m_server_command(server_command) {}	1✔
56
57	std::ostream& output();
58	void send(std::span<const uint8_t> buffer);
59	void push_pending_output(std::string line);
60
61	void tls_session_established(const Botan::TLS::Session_Summary& session) override {	9✔
62	output() << "Handshake complete, " << session.version().to_string() << " using "	9✔
63	<< session.ciphersuite().to_string();	27✔
64
65	if(const auto& psk = session.external_psk_identity()) {	9✔
66	output() << " (utilized PSK identity: " << maybe_hex_encode(psk.value()) << ")";	6✔
67	}
68
69	output() << std::endl;	9✔
70
71	if(const auto& session_id = session.session_id(); !session_id.empty()) {	9✔
72	output() << "Session ID " << Botan::hex_encode(session_id.get()) << std::endl;	9✔
73	}
74
75	if(const auto& session_ticket = session.session_ticket()) {	9✔
76	output() << "Session ticket " << Botan::hex_encode(session_ticket->get()) << std::endl;	×
77	}
78	}	9✔
79
80	void tls_record_received(uint64_t /seq_no/, std::span<const uint8_t> input) override {	9✔
81	for(size_t i = 0; i != input.size(); ++i) {	2,052✔
82	const char c = static_cast<char>(input[i]);	2,043✔
83	m_line_buf += c;	2,043✔
84	if(c == '\n') {	2,043✔
85	push_pending_output(std::exchange(m_line_buf, {}));	27✔
86	}
87	}
88	}	9✔
89
90	void tls_emit_data(std::span<const uint8_t> buf) override { send(buf); }	132✔
91
92	void tls_alert(Botan::TLS::Alert alert) override { output() << "Alert: " << alert.type_string() << std::endl; }	18✔
93
94	std::string tls_server_choose_app_protocol(const std::vector<std::string>& /client_protos/) override {	×
95	// we ignore whatever the client sends here
96	return "echo/0.1";	×
97	}
98
99	void tls_verify_raw_public_key(const Botan::Public_Key& raw_public_key,	×
100	Botan::Usage_Type /* usage */,
101	std::string_view /* hostname */,
102	const Botan::TLS::Policy& /* policy */) override {
103	const auto fingerprint = raw_public_key.fingerprint_public("SHA-256");	×
104	output() << "received Raw Public Key (" << fingerprint << ")\n";	×
105	}	×
106
107	private:
108	TLS_Server& m_server_command;
109	std::string m_line_buf;
110	};
111
112	} // namespace
113
114	class TLS_Server final : public Command {
115	public:
116	#if defined(BOTAN_SO_SOCKETID)
117	TLS_Server() :	2✔
118	Command(
119	"tls_server cert-or-pubkey key --port=443 --psk= --psk-identity= --psk-prf=SHA-256 --type=tcp --policy=default --dump-traces= --max-clients=0 --socket-id=0")	4✔
120	#else
121	TLS_Server() :
122	Command(
123	"tls_server cert-or-pubkey key --port=443 --psk= --psk-identity= --psk-prf=SHA-256 --type=tcp --policy=default --dump-traces= --max-clients=0")
124	#endif
125	{
126	Socket_Utils::init();	2✔
127	}	2✔
128
129	~TLS_Server() override { Socket_Utils::cleanup(); }	4✔
130
131	TLS_Server(const TLS_Server& other) = delete;
132	TLS_Server(TLS_Server&& other) = delete;
133	TLS_Server& operator=(const TLS_Server& other) = delete;
134	TLS_Server& operator=(TLS_Server&& other) = delete;
135
136	std::string group() const override { return "tls"; }	1✔
137
138	std::string description() const override { return "Accept TLS/DTLS connections from TLS/DTLS clients"; }	1✔
139
140	void go() override {	1✔
141	const std::string server_cred = get_arg("cert-or-pubkey");	1✔
142	const std::string server_key = get_arg("key");	1✔
143	const uint16_t port = get_arg_u16("port");	1✔
144	const size_t max_clients = get_arg_sz("max-clients");	1✔
145	const std::string transport = get_arg("type");	1✔
146	const std::string dump_traces_to = get_arg("dump-traces");	1✔
147	auto psk = [this]() -> std::optional<Botan::secure_vector<uint8_t>> {	×
148	auto psk_hex = get_arg_maybe("psk");	1✔
149	if(psk_hex) {	1✔
150	return Botan::hex_decode_locked(psk_hex.value());	1✔
151	} else {
152	return {};	×
153	}
154	}();	2✔
155	const std::optional<std::string> psk_identity = get_arg_maybe("psk-identity");	1✔
156	const std::optional<std::string> psk_prf = get_arg_maybe("psk-prf");	1✔
157
158	#if defined(BOTAN_SO_SOCKETID)
159	m_socket_id = static_cast<uint32_t>(get_arg_sz("socket-id"));	1✔
160	#endif
161
162	if(transport != "tcp" && transport != "udp") {	1✔
163	throw CLI_Usage_Error("Invalid transport type '" + transport + "' for TLS");	×
164	}
165
166	m_is_tcp = (transport == "tcp");	1✔
167
168	auto policy = load_tls_policy(get_arg("policy"));	2✔
169	auto session_manager =	1✔
170	std::make_shared<Botan::TLS::Session_Manager_In_Memory>(rng_as_shared()); // TODO sqlite3	2✔
171	auto creds =	1✔
172	std::make_shared<Basic_Credentials_Manager>(server_cred, server_key, std::move(psk), psk_identity, psk_prf);	1✔
173	auto callbacks = std::make_shared<Callbacks>(*this);	1✔
174
175	if(!m_sandbox.init()) {	1✔
176	error_output() << "Failed sandboxing\n";	×
177	return;	×
178	}
179
180	socket_type server_fd = make_server_socket(port);	1✔
181	size_t clients_served = 0;	1✔
182
183	output() << "Listening for new connections on " << transport << " port " << port << std::endl;	1✔
184
185	while(true) {	21✔
186	if(max_clients > 0 && clients_served >= max_clients) {	11✔
187	break;
188	}
189
190	if(m_is_tcp) {	10✔
191	m_socket = ::accept(server_fd, nullptr, nullptr);	10✔
192	} else {
193	struct sockaddr_in from;	×
194	socklen_t from_len = sizeof(sockaddr_in);	×
195
196	void* peek_buf = nullptr;	×
197	size_t peek_len = 0;	×
198
199	#if defined(BOTAN_TARGET_OS_IS_MACOS)
200	// macOS handles zero size buffers differently - it will return 0 even if there's no incoming data,
201	// and after that connect() will fail as sockaddr_in from is not initialized
202	int dummy;
203	peek_buf = &dummy;
204	peek_len = sizeof(dummy);
205	#endif
206
207	if(::recvfrom(server_fd,	×
208	static_cast<char*>(peek_buf),
209	static_cast<sendrecv_len_type>(peek_len),
210	MSG_PEEK,
211	reinterpret_cast<struct sockaddr*>(&from),
212	&from_len) != 0) {
213	throw CLI_Error("Could not peek next packet");	×
214	}
215
216	if(::connect(server_fd, reinterpret_cast<struct sockaddr*>(&from), from_len) != 0) {	×
217	throw CLI_Error("Could not connect UDP socket");	×
218	}
219	m_socket = server_fd;	×
220	}
221
222	clients_served++;	10✔
223
224	Botan::TLS::Server server(callbacks, session_manager, creds, policy, rng_as_shared(), m_is_tcp == false);	60✔
225
226	std::unique_ptr<std::ostream> dump_stream;	10✔
227
228	if(!dump_traces_to.empty()) {	10✔
229	auto now = std::chrono::system_clock::now().time_since_epoch();	×
230	uint64_t timestamp = std::chrono::duration_cast<std::chrono::nanoseconds>(now).count();	×
231	const std::string dump_file = dump_traces_to + "/tls_" + std::to_string(timestamp) + ".bin";	×
232	dump_stream = std::make_unique<std::ofstream>(dump_file.c_str());	×
233	}	×
234
235	try {
236	while(!server.is_closed()) {	54✔
237	try {	44✔
238	uint8_t buf[4 * 1024] = {0};	44✔
239	ssize_t got = ::recv(m_socket, Botan::cast_uint8_ptr_to_char(buf), sizeof(buf), 0);	44✔
240
241	if(got == -1) {	44✔
242	error_output() << "Error in socket read - " << Socket_Utils::get_last_error() << std::endl;	×
243	break;	×
244	}
245
246	if(got == 0) {	44✔
247	error_output() << "EOF on socket" << std::endl;	×
248	break;
249	}
250
251	if(dump_stream) {	44✔
252	dump_stream->write(reinterpret_cast<const char*>(buf), got);	×
253	}
254
255	server.received_data(buf, got);	44✔
256
257	while(server.is_active() && !m_pending_output.empty()) {	52✔
258	std::string output = m_pending_output.front();	9✔
259	m_pending_output.pop_front();	9✔
260	server.send(output);	9✔
261
262	if(output == "quit\n") {	9✔
263	server.close();	×
264	}
265	}	9✔
266	} catch(std::exception& e) {	1✔
267	error_output() << "Connection problem: " << e.what() << std::endl;	1✔
268	if(m_is_tcp) {	1✔
269	Socket_Utils::close_socket(m_socket);	1✔
270	m_socket = Socket_Utils::invalid_socket();	1✔
271	}
272	}	1✔
273	}
274	} catch(Botan::Exception& e) {	×
275	error_output() << "Connection failed: " << e.what() << "\n";	×
276	}	×
277
278	if(m_is_tcp) {	10✔
279	Socket_Utils::close_socket(m_socket);	10✔
280	m_socket = Socket_Utils::invalid_socket();	10✔
281	}
282	}	10✔
283
284	Socket_Utils::close_socket(server_fd);	2✔
285	}	6✔
286
287	public:
288	using Command::flag_set;
289	using Command::output;
290
291	void send(std::span<const uint8_t> buf) {	66✔
292	if(m_is_tcp) {	66✔
293	ssize_t sent = ::send(m_socket, buf.data(), static_cast<sendrecv_len_type>(buf.size()), MSG_NOSIGNAL);	66✔
294
295	if(sent == -1) {	66✔
296	error_output() << "Error writing to socket - " << Socket_Utils::get_last_error() << std::endl;	×
297	} else if(sent != static_cast<ssize_t>(buf.size())) {	66✔
298	error_output() << "Packet of length " << buf.size() << " truncated to " << sent << std::endl;	×
299	}
300	} else {
301	while(!buf.empty()) {	×
302	ssize_t sent = ::send(m_socket, buf.data(), static_cast<sendrecv_len_type>(buf.size()), MSG_NOSIGNAL);	×
303
304	if(sent == -1) {	×
305	if(errno == EINTR) {	×
306	sent = 0;
307	} else {
308	throw CLI_Error("Socket write failed");	×
309	}
310	}
311
312	buf = buf.subspan(sent);	×
313	}
314	}
315	}	66✔
316
317	void push_pending_output(std::string line) { m_pending_output.emplace_back(std::move(line)); }	9✔
318
319	private:
320	// Import socket operation types from Socket_Platform namespace
321	using socket_type = Socket_Utils::socket_type;
322	using socket_op_ret_type = Socket_Utils::socket_op_ret_type;
323	using socklen_type = Socket_Utils::socklen_type;
324	using sendrecv_len_type = Socket_Utils::sendrecv_len_type;
325
326	socket_type make_server_socket(uint16_t port) {	1✔
327	const int type = m_is_tcp ? SOCK_STREAM : SOCK_DGRAM;	1✔
328
329	socket_type fd = ::socket(PF_INET, type, 0);	1✔
330	if(fd == Socket_Utils::invalid_socket()) {	1✔
331	throw CLI_Error("Unable to acquire socket");	×
332	}
333
334	sockaddr_in socket_info;	1✔
335	Botan::clear_mem(&socket_info, 1);	1✔
336	socket_info.sin_family = AF_INET;	1✔
337	socket_info.sin_port = htons(port);	1✔
338
339	// FIXME: support limiting listeners
340	socket_info.sin_addr.s_addr = INADDR_ANY;	1✔
341
342	if(::bind(fd, reinterpret_cast<struct sockaddr*>(&socket_info), sizeof(struct sockaddr)) != 0) {	1✔
343	Socket_Utils::close_socket(fd);	×
344	throw CLI_Error("server bind failed");	×
345	}
346
347	if(m_is_tcp) {	1✔
348	constexpr int backlog = std::min(100, SOMAXCONN);	1✔
349	if(::listen(fd, backlog) != 0) {	1✔
350	Socket_Utils::close_socket(fd);	×
351	throw CLI_Error("listen failed");	×
352	}
353	}
354	if(m_socket_id > 0) {	1✔
355	#if defined(BOTAN_SO_SOCKETID)
356	if(::setsockopt(fd,	×
357	SOL_SOCKET,
358	BOTAN_SO_SOCKETID,
359	reinterpret_cast<const void*>(&m_socket_id),	×
360	sizeof(m_socket_id)) != 0) {
361	// Failed but not world-ending issue
362	output() << "set socket identifier setting failed" << std::endl;	×
363	}
364	#endif
365	}
366	return fd;	1✔
367	}
368
369	socket_type m_socket = Socket_Utils::invalid_socket();
370	bool m_is_tcp = false;
371	uint32_t m_socket_id = 0;
372	std::list<std::string> m_pending_output;
373	Sandbox m_sandbox;
374	};
375
376	namespace {
377
378	std::ostream& Callbacks::output() {	38✔
379	return m_server_command.output();	38✔
380	}
381
382	void Callbacks::send(std::span<const uint8_t> buffer) {	66✔
383	m_server_command.send(buffer);	66✔
384	}
385
386	void Callbacks::push_pending_output(std::string line) {	9✔
387	m_server_command.push_pending_output(std::move(line));	18✔
388	}	9✔
389
390	} // namespace
391
392	BOTAN_REGISTER_COMMAND("tls_server", TLS_Server);	2✔
393
394	} // namespace Botan_CLI
395
396	#endif

randombit / botan / 13429216726

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