13210394651

Committed 08 Feb 2025 12:33AM UTC coverage: 91.656% (-0.006%) from 91.662%

Build # 13210394651

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Merge pull request #4642 from randombit/jack/target-info-header

Add internal target_info.h header

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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
*
* 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
      {
         init_sockets();
      }

      ~TLS_Server() override { stop_sockets(); }

      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 - " << err_to_string(errno) << 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) {
                        close_socket(m_socket);
                        m_socket = invalid_socket();
                     }
                  }
               }
            } catch(Botan::Exception& e) {
               error_output() << "Connection failed: " << e.what() << "\n";
            }

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

         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 - " << err_to_string(errno) << 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:
      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 == 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) {
            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) {
               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 = 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	*
7	* Botan is released under the Simplified BSD License (see license.txt)
8	*/
9
10	#include "cli.h"
11	#include "sandbox.h"
12
13	#include <botan/internal/target_info.h>
14
15	#if defined(BOTAN_TARGET_OS_HAS_SOCKETS)
16	#include <sys/socket.h>
17	#endif
18
19	#if defined(BOTAN_HAS_TLS) && defined(BOTAN_TARGET_OS_HAS_FILESYSTEM) && defined(BOTAN_TARGET_OS_HAS_SOCKETS)
20
21	#if defined(SO_MARK) \|\| defined(SO_USER_COOKIE) \|\| defined(SO_RTABLE)
22	#if defined(SO_MARK)
23	#define BOTAN_SO_SOCKETID SO_MARK
24	#elif defined(SO_USER_COOKIE)
25	#define BOTAN_SO_SOCKETID SO_USER_COOKIE
26	#else
27	#define BOTAN_SO_SOCKETID SO_RTABLE
28	#endif
29	#endif
30
31	#include <botan/hex.h>
32	#include <botan/mem_ops.h>
33	#include <botan/tls_callbacks.h>
34	#include <botan/tls_policy.h>
35	#include <botan/tls_server.h>
36	#include <botan/tls_session_manager_memory.h>
37
38	#include <chrono>
39	#include <fstream>
40	#include <list>
41	#include <memory>
42
43	#include "socket_utils.h"
44	#include "tls_helpers.h"
45
46	namespace Botan_CLI {
47
48	class TLS_Server;
49
50	namespace {
51
52	class Callbacks : public Botan::TLS::Callbacks {	1✔
53	public:
54	Callbacks(TLS_Server& server_command) : m_server_command(server_command) {}	1✔
55
56	std::ostream& output();
57	void send(std::span<const uint8_t> buffer);
58	void push_pending_output(std::string line);
59
60	void tls_session_established(const Botan::TLS::Session_Summary& session) override {	9✔
61	output() << "Handshake complete, " << session.version().to_string() << " using "	9✔
62	<< session.ciphersuite().to_string();	27✔
63
64	if(const auto& psk = session.external_psk_identity()) {	9✔
65	output() << " (utilized PSK identity: " << maybe_hex_encode(psk.value()) << ")";	6✔
66	}
67
68	output() << std::endl;	9✔
69
70	if(const auto& session_id = session.session_id(); !session_id.empty()) {	9✔
71	output() << "Session ID " << Botan::hex_encode(session_id.get()) << std::endl;	9✔
72	}
73
74	if(const auto& session_ticket = session.session_ticket()) {	9✔
75	output() << "Session ticket " << Botan::hex_encode(session_ticket->get()) << std::endl;	×
76	}
77	}	9✔
78
79	void tls_record_received(uint64_t /seq_no/, std::span<const uint8_t> input) override {	9✔
80	for(size_t i = 0; i != input.size(); ++i) {	2,061✔
81	const char c = static_cast<char>(input[i]);	2,052✔
82	m_line_buf += c;	2,052✔
83	if(c == '\n') {	2,052✔
84	push_pending_output(std::exchange(m_line_buf, {}));	27✔
85	}
86	}
87	}	9✔
88
89	void tls_emit_data(std::span<const uint8_t> buf) override { send(buf); }	132✔
90
91	void tls_alert(Botan::TLS::Alert alert) override { output() << "Alert: " << alert.type_string() << std::endl; }	18✔
92
93	std::string tls_server_choose_app_protocol(const std::vector<std::string>& /client_protos/) override {	×
94	// we ignore whatever the client sends here
95	return "echo/0.1";	×
96	}
97
98	void tls_verify_raw_public_key(const Botan::Public_Key& raw_public_key,	×
99	Botan::Usage_Type /* usage */,
100	std::string_view /* hostname */,
101	const Botan::TLS::Policy& /* policy */) override {
102	const auto fingerprint = raw_public_key.fingerprint_public("SHA-256");	×
103	output() << "received Raw Public Key (" << fingerprint << ")\n";	×
104	}	×
105
106	private:
107	TLS_Server& m_server_command;
108	std::string m_line_buf;
109	};
110
111	} // namespace
112
113	class TLS_Server final : public Command {
114	public:
115	#if defined(BOTAN_SO_SOCKETID)
116	TLS_Server() :	2✔
117	Command(
118	"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✔
119	#else
120	TLS_Server() :
121	Command(
122	"tls_server cert-or-pubkey key --port=443 --psk= --psk-identity= --psk-prf=SHA-256 --type=tcp --policy=default --dump-traces= --max-clients=0")
123	#endif
124	{
125	init_sockets();	2✔
126	}	2✔
127
128	~TLS_Server() override { stop_sockets(); }	4✔
129
130	TLS_Server(const TLS_Server& other) = delete;
131	TLS_Server(TLS_Server&& other) = delete;
132	TLS_Server& operator=(const TLS_Server& other) = delete;
133	TLS_Server& operator=(TLS_Server&& other) = delete;
134
135	std::string group() const override { return "tls"; }	1✔
136
137	std::string description() const override { return "Accept TLS/DTLS connections from TLS/DTLS clients"; }	1✔
138
139	void go() override {	1✔
140	const std::string server_cred = get_arg("cert-or-pubkey");	1✔
141	const std::string server_key = get_arg("key");	1✔
142	const uint16_t port = get_arg_u16("port");	1✔
143	const size_t max_clients = get_arg_sz("max-clients");	1✔
144	const std::string transport = get_arg("type");	1✔
145	const std::string dump_traces_to = get_arg("dump-traces");	1✔
146	auto psk = [this]() -> std::optional<Botan::secure_vector<uint8_t>> {	×
147	auto psk_hex = get_arg_maybe("psk");	1✔
148	if(psk_hex) {	1✔
149	return Botan::hex_decode_locked(psk_hex.value());	1✔
150	} else {
151	return {};	×
152	}
153	}();	2✔
154	const std::optional<std::string> psk_identity = get_arg_maybe("psk-identity");	1✔
155	const std::optional<std::string> psk_prf = get_arg_maybe("psk-prf");	1✔
156
157	#if defined(BOTAN_SO_SOCKETID)
158	m_socket_id = static_cast<uint32_t>(get_arg_sz("socket-id"));	1✔
159	#endif
160
161	if(transport != "tcp" && transport != "udp") {	1✔
162	throw CLI_Usage_Error("Invalid transport type '" + transport + "' for TLS");	×
163	}
164
165	m_is_tcp = (transport == "tcp");	1✔
166
167	auto policy = load_tls_policy(get_arg("policy"));	2✔
168	auto session_manager =	1✔
169	std::make_shared<Botan::TLS::Session_Manager_In_Memory>(rng_as_shared()); // TODO sqlite3	2✔
170	auto creds =	1✔
171	std::make_shared<Basic_Credentials_Manager>(server_cred, server_key, std::move(psk), psk_identity, psk_prf);	1✔
172	auto callbacks = std::make_shared<Callbacks>(*this);	1✔
173
174	if(!m_sandbox.init()) {	1✔
175	error_output() << "Failed sandboxing\n";	×
176	return;	×
177	}
178
179	socket_type server_fd = make_server_socket(port);	1✔
180	size_t clients_served = 0;	1✔
181
182	output() << "Listening for new connections on " << transport << " port " << port << std::endl;	1✔
183
184	while(true) {	21✔
185	if(max_clients > 0 && clients_served >= max_clients) {	11✔
186	break;
187	}
188
189	if(m_is_tcp) {	10✔
190	m_socket = ::accept(server_fd, nullptr, nullptr);	10✔
191	} else {
192	struct sockaddr_in from;	×
193	socklen_t from_len = sizeof(sockaddr_in);	×
194
195	void* peek_buf = nullptr;	×
196	size_t peek_len = 0;	×
197
198	#if defined(BOTAN_TARGET_OS_IS_MACOS)
199	// macOS handles zero size buffers differently - it will return 0 even if there's no incoming data,
200	// and after that connect() will fail as sockaddr_in from is not initialized
201	int dummy;
202	peek_buf = &dummy;
203	peek_len = sizeof(dummy);
204	#endif
205
206	if(::recvfrom(server_fd,	×
207	static_cast<char*>(peek_buf),
208	static_cast<sendrecv_len_type>(peek_len),
209	MSG_PEEK,
210	reinterpret_cast<struct sockaddr*>(&from),
211	&from_len) != 0) {
212	throw CLI_Error("Could not peek next packet");	×
213	}
214
215	if(::connect(server_fd, reinterpret_cast<struct sockaddr*>(&from), from_len) != 0) {	×
216	throw CLI_Error("Could not connect UDP socket");	×
217	}
218	m_socket = server_fd;	×
219	}
220
221	clients_served++;	10✔
222
223	Botan::TLS::Server server(callbacks, session_manager, creds, policy, rng_as_shared(), m_is_tcp == false);	60✔
224
225	std::unique_ptr<std::ostream> dump_stream;	10✔
226
227	if(!dump_traces_to.empty()) {	10✔
228	auto now = std::chrono::system_clock::now().time_since_epoch();	×
229	uint64_t timestamp = std::chrono::duration_cast<std::chrono::nanoseconds>(now).count();	×
230	const std::string dump_file = dump_traces_to + "/tls_" + std::to_string(timestamp) + ".bin";	×
231	dump_stream = std::make_unique<std::ofstream>(dump_file.c_str());	×
232	}	×
233
234	try {
235	while(!server.is_closed()) {	54✔
236	try {	44✔
237	uint8_t buf[4 * 1024] = {0};	44✔
238	ssize_t got = ::recv(m_socket, Botan::cast_uint8_ptr_to_char(buf), sizeof(buf), 0);	44✔
239
240	if(got == -1) {	44✔
241	error_output() << "Error in socket read - " << err_to_string(errno) << std::endl;	×
242	break;	×
243	}
244
245	if(got == 0) {	44✔
246	error_output() << "EOF on socket" << std::endl;	×
247	break;
248	}
249
250	if(dump_stream) {	44✔
251	dump_stream->write(reinterpret_cast<const char*>(buf), got);	×
252	}
253
254	server.received_data(buf, got);	44✔
255
256	while(server.is_active() && !m_pending_output.empty()) {	52✔
257	std::string output = m_pending_output.front();	9✔
258	m_pending_output.pop_front();	9✔
259	server.send(output);	9✔
260
261	if(output == "quit\n") {	9✔
262	server.close();	×
263	}
264	}	9✔
265	} catch(std::exception& e) {	1✔
266	error_output() << "Connection problem: " << e.what() << std::endl;	1✔
267	if(m_is_tcp) {	1✔
268	close_socket(m_socket);	1✔
269	m_socket = invalid_socket();	1✔
270	}
271	}	1✔
272	}
273	} catch(Botan::Exception& e) {	×
274	error_output() << "Connection failed: " << e.what() << "\n";	×
275	}	×
276
277	if(m_is_tcp) {	10✔
278	close_socket(m_socket);	10✔
279	m_socket = invalid_socket();	10✔
280	}
281	}	10✔
282
283	close_socket(server_fd);	2✔
284	}	6✔
285
286	public:
287	using Command::flag_set;
288	using Command::output;
289
290	void send(std::span<const uint8_t> buf) {	66✔
291	if(m_is_tcp) {	66✔
292	ssize_t sent = ::send(m_socket, buf.data(), static_cast<sendrecv_len_type>(buf.size()), MSG_NOSIGNAL);	66✔
293
294	if(sent == -1) {	66✔
295	error_output() << "Error writing to socket - " << err_to_string(errno) << std::endl;	×
296	} else if(sent != static_cast<ssize_t>(buf.size())) {	66✔
297	error_output() << "Packet of length " << buf.size() << " truncated to " << sent << std::endl;	×
298	}
299	} else {
300	while(!buf.empty()) {	×
301	ssize_t sent = ::send(m_socket, buf.data(), static_cast<sendrecv_len_type>(buf.size()), MSG_NOSIGNAL);	×
302
303	if(sent == -1) {	×
304	if(errno == EINTR) {	×
305	sent = 0;
306	} else {
307	throw CLI_Error("Socket write failed");	×
308	}
309	}
310
311	buf = buf.subspan(sent);	×
312	}
313	}
314	}	66✔
315
316	void push_pending_output(std::string line) { m_pending_output.emplace_back(std::move(line)); }	9✔
317
318	private:
319	socket_type make_server_socket(uint16_t port) {	1✔
320	const int type = m_is_tcp ? SOCK_STREAM : SOCK_DGRAM;	1✔
321
322	socket_type fd = ::socket(PF_INET, type, 0);	1✔
323	if(fd == invalid_socket()) {	1✔
324	throw CLI_Error("Unable to acquire socket");	×
325	}
326
327	sockaddr_in socket_info;	1✔
328	Botan::clear_mem(&socket_info, 1);	1✔
329	socket_info.sin_family = AF_INET;	1✔
330	socket_info.sin_port = htons(port);	1✔
331
332	// FIXME: support limiting listeners
333	socket_info.sin_addr.s_addr = INADDR_ANY;	1✔
334
335	if(::bind(fd, reinterpret_cast<struct sockaddr*>(&socket_info), sizeof(struct sockaddr)) != 0) {	1✔
336	close_socket(fd);	×
337	throw CLI_Error("server bind failed");	×
338	}
339
340	if(m_is_tcp) {	1✔
341	constexpr int backlog = std::min(100, SOMAXCONN);	1✔
342	if(::listen(fd, backlog) != 0) {	1✔
343	close_socket(fd);	×
344	throw CLI_Error("listen failed");	×
345	}
346	}
347	if(m_socket_id > 0) {	1✔
348	#if defined(BOTAN_SO_SOCKETID)
349	if(::setsockopt(fd,	×
350	SOL_SOCKET,
351	BOTAN_SO_SOCKETID,
352	reinterpret_cast<const void*>(&m_socket_id),	×
353	sizeof(m_socket_id)) != 0) {
354	// Failed but not world-ending issue
355	output() << "set socket identifier setting failed" << std::endl;	×
356	}
357	#endif
358	}
359	return fd;	1✔
360	}
361
362	socket_type m_socket = invalid_socket();
363	bool m_is_tcp = false;
364	uint32_t m_socket_id = 0;
365	std::list<std::string> m_pending_output;
366	Sandbox m_sandbox;
367	};
368
369	namespace {
370
371	std::ostream& Callbacks::output() {	38✔
372	return m_server_command.output();	38✔
373	}
374
375	void Callbacks::send(std::span<const uint8_t> buffer) {	66✔
376	m_server_command.send(buffer);	66✔
377	}
378
379	void Callbacks::push_pending_output(std::string line) {	9✔
380	m_server_command.push_pending_output(std::move(line));	18✔
381	}	9✔
382
383	} // namespace
384
385	BOTAN_REGISTER_COMMAND("tls_server", TLS_Server);	2✔
386
387	} // namespace Botan_CLI
388
389	#endif

randombit / botan / 13210394651

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