5587580523

Committed 18 Jul 2023 12:45PM UTC coverage: 91.72% (+0.03%) from 91.691%

Build # 5587580523

Build Type

Pull #3618

github

Committed by

web-flow

Commit Message

Merge b6d23d19e into 65b754862

Pull Request Pull Request #3618: [TLS 1.3] PSK Support

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77.2

/src/cli/tls_client.cpp

/*
* (C) 2014,2015 Jack Lloyd
*     2016 Matthias Gierlings
*     2017 René Korthaus, Rohde & Schwarz Cybersecurity
*     2022 René Meusel, Hannes Rantzsch - neXenio GmbH
*     2023 René Meusel, Rohde & Schwarz Cybersecurity
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include "cli.h"

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

   #include <botan/hex.h>
   #include <botan/ocsp.h>
   #include <botan/tls_callbacks.h>
   #include <botan/tls_client.h>
   #include <botan/tls_policy.h>
   #include <botan/tls_session_manager_memory.h>
   #include <botan/x509path.h>
   #include <fstream>

   #if defined(BOTAN_HAS_TLS_SQLITE3_SESSION_MANAGER)
      #include <botan/tls_session_manager_sqlite.h>
   #endif

   #include <memory>
   #include <string>

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

namespace Botan_CLI {

class TLS_Client;

namespace {

class Callbacks : public Botan::TLS::Callbacks {
   public:
      Callbacks(TLS_Client& client_command) : m_client_command(client_command) {}

      std::ostream& output();
      bool flag_set(const std::string& flag_name) const;
      void send(std::span<const uint8_t> buffer);

      void tls_verify_cert_chain(const std::vector<Botan::X509_Certificate>& cert_chain,
                                 const std::vector<std::optional<Botan::OCSP::Response>>& ocsp,
                                 const std::vector<Botan::Certificate_Store*>& trusted_roots,
                                 Botan::Usage_Type usage,
                                 std::string_view hostname,
                                 const Botan::TLS::Policy& policy) override {
         if(cert_chain.empty()) {
            throw Botan::Invalid_Argument("Certificate chain was empty");
         }

         Botan::Path_Validation_Restrictions restrictions(policy.require_cert_revocation_info(),
                                                          policy.minimum_signature_strength());

         auto ocsp_timeout = std::chrono::milliseconds(1000);

         Botan::Path_Validation_Result result = Botan::x509_path_validate(
            cert_chain, restrictions, trusted_roots, hostname, usage, tls_current_timestamp(), ocsp_timeout, ocsp);

         output() << "Certificate validation status: " << result.result_string() << "\n";
         if(result.successful_validation()) {
            auto status = result.all_statuses();

            if(!status.empty() && status[0].contains(Botan::Certificate_Status_Code::OCSP_RESPONSE_GOOD)) {
               output() << "Valid OCSP response for this server\n";
            }
         }
      }

      void tls_session_activated() override { output() << "Handshake complete\n"; }

      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()) << "\n";
         }

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

         if(flag_set("print-certs")) {
            const std::vector<Botan::X509_Certificate>& certs = session.peer_certs();

            for(size_t i = 0; i != certs.size(); ++i) {
               output() << "Certificate " << i + 1 << "/" << certs.size() << "\n";
               output() << certs[i].to_string();
               output() << certs[i].PEM_encode();
            }
         }
      }

      void tls_emit_data(std::span<const uint8_t> buf) override {
         if(flag_set("debug")) {
            output() << "<< " << Botan::hex_encode(buf) << "\n";
         }

         send(buf);
      }

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

      void tls_record_received(uint64_t /*seq_no*/, std::span<const uint8_t> buf) override {
         for(const auto c : buf) {
            output() << c;
         }
      }

      std::vector<uint8_t> tls_sign_message(const Botan::Private_Key& key,
                                            Botan::RandomNumberGenerator& rng,
                                            const std::string_view padding,
                                            Botan::Signature_Format format,
                                            const std::vector<uint8_t>& msg) override {
         output() << "Performing client authentication\n";
         return Botan::TLS::Callbacks::tls_sign_message(key, rng, padding, format, msg);
      }

   private:
      TLS_Client& m_client_command;
};

}  // namespace

class TLS_Client final : public Command {
   public:
      TLS_Client() :
            Command(
               "tls_client host --port=443 --print-certs --policy=default "
               "--skip-system-cert-store --trusted-cas= --tls-version=default "
               "--session-db= --session-db-pass= --next-protocols= --type=tcp "
               "--client-cert= --client-cert-key= --psk= --psk-identity= --psk-prf=SHA-256 --debug") {
         init_sockets();
      }

      ~TLS_Client() override { stop_sockets(); }

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

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

      std::string description() const override { return "Connect to a host using TLS/DTLS"; }

      void go() override {
         std::shared_ptr<Botan::TLS::Session_Manager> session_mgr;

         auto callbacks = std::make_shared<Callbacks>(*this);

         const std::string sessions_db = get_arg("session-db");
         const std::string host = get_arg("host");
         const uint16_t port = get_arg_u16("port");
         const std::string transport = get_arg("type");
         const std::string next_protos = get_arg("next-protocols");
         const bool use_system_cert_store = flag_set("skip-system-cert-store") == false;
         const std::string trusted_CAs = get_arg("trusted-cas");
         const auto tls_version = get_arg("tls-version");

         if(!sessions_db.empty()) {
   #if defined(BOTAN_HAS_TLS_SQLITE3_SESSION_MANAGER)
            const std::string sessions_passphrase = get_passphrase_arg("Session DB passphrase", "session-db-pass");
            session_mgr.reset(
               new Botan::TLS::Session_Manager_SQLite(sessions_passphrase, rng_as_shared(), sessions_db));
   #else
            error_output() << "Ignoring session DB file, sqlite not enabled\n";
   #endif
         }

         if(!session_mgr) {
            session_mgr = std::make_shared<Botan::TLS::Session_Manager_In_Memory>(rng_as_shared());
         }

         auto policy = load_tls_policy(get_arg("policy"));

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

         const std::vector<std::string> protocols_to_offer = Command::split_on(next_protos, ',');

         if(!policy) {
            policy = std::make_shared<Botan::TLS::Policy>();
         }

         const bool use_tcp = (transport == "tcp");
         Botan::TLS::Protocol_Version version = policy->latest_supported_version(!use_tcp);

         if(tls_version != "default") {
            if(tls_version == "1.2") {
               version = use_tcp ? Botan::TLS::Protocol_Version::TLS_V12 : Botan::TLS::Protocol_Version::DTLS_V12;
            } else if(tls_version == "1.3") {
               version = use_tcp ? Botan::TLS::Protocol_Version::TLS_V13 : Botan::TLS::Protocol_Version::DTLS_V13;
            } else {
               error_output() << "Unknown TLS protocol version " << tls_version << '\n';
            }
         }

         struct sockaddr_storage addrbuf;
         std::string hostname;
         if(!host.empty() && inet_pton(AF_INET, host.c_str(), &addrbuf) != 1 &&
            inet_pton(AF_INET6, host.c_str(), &addrbuf) != 1) {
            hostname = host;
         }

         m_sockfd = connect_to_host(host, port, use_tcp);

         const auto client_crt_path = get_arg_maybe("client-cert");
         const auto client_key_path = get_arg_maybe("client-cert-key");

         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");

         auto creds = std::make_shared<Basic_Credentials_Manager>(use_system_cert_store,
                                                                  trusted_CAs,
                                                                  client_crt_path,
                                                                  client_key_path,
                                                                  std::move(psk),
                                                                  psk_identity,
                                                                  psk_prf);

         Botan::TLS::Client client(callbacks,
                                   session_mgr,
                                   creds,
                                   policy,
                                   rng_as_shared(),
                                   Botan::TLS::Server_Information(hostname, port),
                                   version,
                                   protocols_to_offer);

         bool first_active = true;

         while(!client.is_closed()) {
            fd_set readfds;
            FD_ZERO(&readfds);
            FD_SET(m_sockfd, &readfds);

            if(client.is_active()) {
               FD_SET(STDIN_FILENO, &readfds);
               if(first_active && !protocols_to_offer.empty()) {
                  std::string app = client.application_protocol();
                  if(!app.empty()) {
                     output() << "Server choose protocol: " << client.application_protocol() << "\n";
                  }
                  first_active = false;
               }
            }

            struct timeval timeout = {1, 0};

            ::select(static_cast<int>(m_sockfd + 1), &readfds, nullptr, nullptr, &timeout);

            if(FD_ISSET(m_sockfd, &readfds)) {
               uint8_t buf[4 * 1024] = {0};

               ssize_t got = ::read(m_sockfd, buf, sizeof(buf));

               if(got == 0) {
                  output() << "EOF on socket\n";
                  break;
               } else if(got == -1) {
                  output() << "Socket error: " << errno << " " << err_to_string(errno) << "\n";
                  continue;
               }

               if(flag_set("debug")) {
                  output() << ">> " << Botan::hex_encode(buf, got) << "\n";
               }

               client.received_data(buf, got);
            }

            if(FD_ISSET(STDIN_FILENO, &readfds)) {
               uint8_t buf[1024] = {0};
               ssize_t got = read(STDIN_FILENO, buf, sizeof(buf));

               if(got == 0) {
                  output() << "EOF on stdin\n";
                  client.close();
                  break;
               } else if(got == -1) {
                  output() << "Stdin error: " << errno << " " << err_to_string(errno) << "\n";
                  continue;
               }

               if(got == 2 && buf[1] == '\n') {
                  char cmd = buf[0];

                  if(cmd == 'R' || cmd == 'r') {
                     output() << "Client initiated renegotiation\n";
                     client.renegotiate(cmd == 'R');
                  } else if(cmd == 'Q') {
                     output() << "Client initiated close\n";
                     client.close();
                  }
               } else {
                  client.send(buf, got);
               }
            }

            if(client.timeout_check()) {
               output() << "Timeout detected\n";
            }
         }

         ::close(m_sockfd);
      }

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

      void send(std::span<const uint8_t> buf) const {
         while(!buf.empty()) {
            ssize_t sent = ::send(m_sockfd, buf.data(), buf.size(), MSG_NOSIGNAL);

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

            buf = buf.subspan(sent);
         }
      }

   private:
      static socket_type connect_to_host(const std::string& host, uint16_t port, bool tcp) {
         addrinfo hints;
         Botan::clear_mem(&hints, 1);
         hints.ai_family = AF_UNSPEC;
         hints.ai_socktype = tcp ? SOCK_STREAM : SOCK_DGRAM;
         addrinfo *res, *rp = nullptr;

         if(::getaddrinfo(host.c_str(), std::to_string(port).c_str(), &hints, &res) != 0) {
            throw CLI_Error("getaddrinfo failed for " + host);
         }

         socket_type fd = 0;

         for(rp = res; rp != nullptr; rp = rp->ai_next) {
            fd = ::socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);

            if(fd == invalid_socket()) {
               continue;
            }

            if(::connect(fd, rp->ai_addr, static_cast<socklen_t>(rp->ai_addrlen)) != 0) {
               ::close(fd);
               continue;
            }

            break;
         }

         ::freeaddrinfo(res);

         if(rp == nullptr)  // no address succeeded
         {
            throw CLI_Error("connect failed");
         }

         return fd;
      }

      static void dgram_socket_write(int sockfd, const uint8_t buf[], size_t length) {
         auto r = ::send(sockfd, buf, length, MSG_NOSIGNAL);

         if(r == -1) {
            throw CLI_Error("Socket write failed errno=" + std::to_string(errno));
         }
      }

      socket_type m_sockfd = invalid_socket();
};

namespace {

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

bool Callbacks::flag_set(const std::string& flag_name) const {
   return m_client_command.flag_set(flag_name);
}

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

}  // namespace

BOTAN_REGISTER_COMMAND("tls_client", TLS_Client);

}  // namespace Botan_CLI

#endif

1	/*
2	* (C) 2014,2015 Jack Lloyd
3	* 2016 Matthias Gierlings
4	* 2017 René Korthaus, Rohde & Schwarz Cybersecurity
5	* 2022 René Meusel, Hannes Rantzsch - neXenio GmbH
6	* 2023 René Meusel, Rohde & Schwarz Cybersecurity
7	*
8	* Botan is released under the Simplified BSD License (see license.txt)
9	*/
10
11	#include "cli.h"
12
13	#if defined(BOTAN_HAS_TLS) && defined(BOTAN_TARGET_OS_HAS_FILESYSTEM) && defined(BOTAN_TARGET_OS_HAS_SOCKETS)
14
15	#include <botan/hex.h>
16	#include <botan/ocsp.h>
17	#include <botan/tls_callbacks.h>
18	#include <botan/tls_client.h>
19	#include <botan/tls_policy.h>
20	#include <botan/tls_session_manager_memory.h>
21	#include <botan/x509path.h>
22	#include <fstream>
23
24	#if defined(BOTAN_HAS_TLS_SQLITE3_SESSION_MANAGER)
25	#include <botan/tls_session_manager_sqlite.h>
26	#endif
27
28	#include <memory>
29	#include <string>
30
31	#include "socket_utils.h"
32	#include "tls_helpers.h"
33
34	namespace Botan_CLI {
35
36	class TLS_Client;
37
38	namespace {
39
40	class Callbacks : public Botan::TLS::Callbacks {	5✔
41	public:
42	Callbacks(TLS_Client& client_command) : m_client_command(client_command) {}	5✔
43
44	std::ostream& output();
45	bool flag_set(const std::string& flag_name) const;
46	void send(std::span<const uint8_t> buffer);
47
48	void tls_verify_cert_chain(const std::vector<Botan::X509_Certificate>& cert_chain,	3✔
49	const std::vector<std::optional<Botan::OCSP::Response>>& ocsp,
50	const std::vector<Botan::Certificate_Store*>& trusted_roots,
51	Botan::Usage_Type usage,
52	std::string_view hostname,
53	const Botan::TLS::Policy& policy) override {
54	if(cert_chain.empty()) {	3✔
55	throw Botan::Invalid_Argument("Certificate chain was empty");	×
56	}
57
58	Botan::Path_Validation_Restrictions restrictions(policy.require_cert_revocation_info(),	3✔
59	policy.minimum_signature_strength());	9✔
60
61	auto ocsp_timeout = std::chrono::milliseconds(1000);	3✔
62
63	Botan::Path_Validation_Result result = Botan::x509_path_validate(	3✔
64	cert_chain, restrictions, trusted_roots, hostname, usage, tls_current_timestamp(), ocsp_timeout, ocsp);	3✔
65
66	output() << "Certificate validation status: " << result.result_string() << "\n";	6✔
67	if(result.successful_validation()) {	3✔
68	auto status = result.all_statuses();	3✔
69
70	if(!status.empty() && status[0].contains(Botan::Certificate_Status_Code::OCSP_RESPONSE_GOOD)) {	6✔
71	output() << "Valid OCSP response for this server\n";	×
72	}
73	}	3✔
74	}	3✔
75
76	void tls_session_activated() override { output() << "Handshake complete\n"; }	5✔
77
78	void tls_session_established(const Botan::TLS::Session_Summary& session) override {	5✔
79	output() << "Handshake complete, " << session.version().to_string() << " using "	5✔
80	<< session.ciphersuite().to_string();	20✔
81
82	if(const auto& psk = session.external_psk_identity()) {	5✔
83	output() << " (utilized PSK identity: " << maybe_hex_encode(psk.value()) << ")";	4✔
84	}
85
86	output() << std::endl;	5✔
87
88	if(const auto& session_id = session.session_id(); !session_id.empty()) {	5✔
89	output() << "Session ID " << Botan::hex_encode(session_id.get()) << "\n";	10✔
90	}
91
92	if(const auto& session_ticket = session.session_ticket()) {	5✔
93	output() << "Session ticket " << Botan::hex_encode(session_ticket->get()) << "\n";	×
94	}
95
96	if(flag_set("print-certs")) {	10✔
97	const std::vector<Botan::X509_Certificate>& certs = session.peer_certs();
98
99	for(size_t i = 0; i != certs.size(); ++i) {	×
100	output() << "Certificate " << i + 1 << "/" << certs.size() << "\n";	×
101	output() << certs[i].to_string();	×
102	output() << certs[i].PEM_encode();	×
103	}
104	}
105	}	5✔
106
107	void tls_emit_data(std::span<const uint8_t> buf) override {	24✔
108	if(flag_set("debug")) {	48✔
109	output() << "<< " << Botan::hex_encode(buf) << "\n";	×
110	}
111
112	send(buf);	48✔
113	}	24✔
114
115	void tls_alert(Botan::TLS::Alert alert) override { output() << "Alert: " << alert.type_string() << "\n"; }	×
116
117	void tls_record_received(uint64_t /seq_no/, std::span<const uint8_t> buf) override {	8✔
118	for(const auto c : buf) {	1,143✔
119	output() << c;	1,135✔
120	}
121	}	8✔
122
123	std::vector<uint8_t> tls_sign_message(const Botan::Private_Key& key,	×
124	Botan::RandomNumberGenerator& rng,
125	const std::string_view padding,
126	Botan::Signature_Format format,
127	const std::vector<uint8_t>& msg) override {
128	output() << "Performing client authentication\n";	×
129	return Botan::TLS::Callbacks::tls_sign_message(key, rng, padding, format, msg);	×
130	}
131
132	private:
133	TLS_Client& m_client_command;
134	};
135
136	} // namespace
137
138	class TLS_Client final : public Command {
139	public:
140	TLS_Client() :	6✔
141	Command(
142	"tls_client host --port=443 --print-certs --policy=default "
143	"--skip-system-cert-store --trusted-cas= --tls-version=default "
144	"--session-db= --session-db-pass= --next-protocols= --type=tcp "
145	"--client-cert= --client-cert-key= --psk= --psk-identity= --psk-prf=SHA-256 --debug") {	12✔
146	init_sockets();	6✔
147	}	6✔
148
149	~TLS_Client() override { stop_sockets(); }	6✔
150
151	TLS_Client(const TLS_Client& other) = delete;
152	TLS_Client(TLS_Client&& other) = delete;
153	TLS_Client& operator=(const TLS_Client& other) = delete;
154	TLS_Client& operator=(TLS_Client&& other) = delete;
155
156	std::string group() const override { return "tls"; }	2✔
157
158	std::string description() const override { return "Connect to a host using TLS/DTLS"; }	1✔
159
160	void go() override {	5✔
161	std::shared_ptr<Botan::TLS::Session_Manager> session_mgr;	5✔
162
163	auto callbacks = std::make_shared<Callbacks>(*this);	5✔
164
165	const std::string sessions_db = get_arg("session-db");	5✔
166	const std::string host = get_arg("host");	5✔
167	const uint16_t port = get_arg_u16("port");	5✔
168	const std::string transport = get_arg("type");	5✔
169	const std::string next_protos = get_arg("next-protocols");	5✔
170	const bool use_system_cert_store = flag_set("skip-system-cert-store") == false;	5✔
171	const std::string trusted_CAs = get_arg("trusted-cas");	5✔
172	const auto tls_version = get_arg("tls-version");	5✔
173
174	if(!sessions_db.empty()) {	5✔
175	#if defined(BOTAN_HAS_TLS_SQLITE3_SESSION_MANAGER)
176	const std::string sessions_passphrase = get_passphrase_arg("Session DB passphrase", "session-db-pass");	×
177	session_mgr.reset(	×
178	new Botan::TLS::Session_Manager_SQLite(sessions_passphrase, rng_as_shared(), sessions_db));	×
179	#else
180	error_output() << "Ignoring session DB file, sqlite not enabled\n";
181	#endif
182	}	×
183
184	if(!session_mgr) {	5✔
185	session_mgr = std::make_shared<Botan::TLS::Session_Manager_In_Memory>(rng_as_shared());	15✔
186	}
187
188	auto policy = load_tls_policy(get_arg("policy"));	10✔
189
190	if(transport != "tcp" && transport != "udp") {	5✔
191	throw CLI_Usage_Error("Invalid transport type '" + transport + "' for TLS");	×
192	}
193
194	const std::vector<std::string> protocols_to_offer = Command::split_on(next_protos, ',');	5✔
195
196	if(!policy) {	5✔
197	policy = std::make_shared<Botan::TLS::Policy>();	×
198	}
199
200	const bool use_tcp = (transport == "tcp");	5✔
201	Botan::TLS::Protocol_Version version = policy->latest_supported_version(!use_tcp);	5✔
202
203	if(tls_version != "default") {	5✔
204	if(tls_version == "1.2") {	5✔
205	version = use_tcp ? Botan::TLS::Protocol_Version::TLS_V12 : Botan::TLS::Protocol_Version::DTLS_V12;	2✔
206	} else if(tls_version == "1.3") {	3✔
207	version = use_tcp ? Botan::TLS::Protocol_Version::TLS_V13 : Botan::TLS::Protocol_Version::DTLS_V13;	3✔
208	} else {
209	error_output() << "Unknown TLS protocol version " << tls_version << '\n';	×
210	}
211	}
212
213	struct sockaddr_storage addrbuf;	5✔
214	std::string hostname;	5✔
215	if(!host.empty() && inet_pton(AF_INET, host.c_str(), &addrbuf) != 1 &&	10✔
216	inet_pton(AF_INET6, host.c_str(), &addrbuf) != 1) {	5✔
217	hostname = host;	5✔
218	}
219
220	m_sockfd = connect_to_host(host, port, use_tcp);	5✔
221
222	const auto client_crt_path = get_arg_maybe("client-cert");	5✔
223	const auto client_key_path = get_arg_maybe("client-cert-key");	5✔
224
225	auto psk = [this]() -> std::optional<Botan::secure_vector<uint8_t>> {	10✔
226	auto psk_hex = get_arg_maybe("psk");	5✔
227	if(psk_hex) {	5✔
228	return Botan::hex_decode_locked(psk_hex.value());	2✔
229	} else {
230	return {};	5✔
231	}
232	}();	10✔
233	const std::optional<std::string> psk_identity = get_arg_maybe("psk-identity");	5✔
234	const std::optional<std::string> psk_prf = get_arg_maybe("psk-prf");	5✔
235
236	auto creds = std::make_shared<Basic_Credentials_Manager>(use_system_cert_store,	5✔
237	trusted_CAs,
238	client_crt_path,
239	client_key_path,
240	std::move(psk),	5✔
241	psk_identity,
242	psk_prf);	5✔
243
244	Botan::TLS::Client client(callbacks,	5✔
245	session_mgr,
246	creds,
247	policy,
248	rng_as_shared(),	10✔
249	Botan::TLS::Server_Information(hostname, port),	5✔
250	version,
251	protocols_to_offer);	20✔
252
253	bool first_active = true;	5✔
254
255	while(!client.is_closed()) {	24✔
256	fd_set readfds;
257	FD_ZERO(&readfds);	408✔
258	FD_SET(m_sockfd, &readfds);	24✔
259
260	if(client.is_active()) {	24✔
261	FD_SET(STDIN_FILENO, &readfds);	15✔
262	if(first_active && !protocols_to_offer.empty()) {	15✔
263	std::string app = client.application_protocol();	×
264	if(!app.empty()) {	×
265	output() << "Server choose protocol: " << client.application_protocol() << "\n";	×
266	}
267	first_active = false;	×
268	}	×
269	}
270
271	struct timeval timeout = {1, 0};	24✔
272
273	::select(static_cast<int>(m_sockfd + 1), &readfds, nullptr, nullptr, &timeout);	24✔
274
275	if(FD_ISSET(m_sockfd, &readfds)) {	24✔
276	uint8_t buf[4 * 1024] = {0};	17✔
277
278	ssize_t got = ::read(m_sockfd, buf, sizeof(buf));	17✔
279
280	if(got == 0) {	17✔
281	output() << "EOF on socket\n";	×
282	break;	×
283	} else if(got == -1) {	17✔
284	output() << "Socket error: " << errno << " " << err_to_string(errno) << "\n";	×
285	continue;	×
286	}
287
288	if(flag_set("debug")) {	17✔
289	output() << ">> " << Botan::hex_encode(buf, got) << "\n";	×
290	}
291
292	client.received_data(buf, got);	17✔
293	}
294
295	if(FD_ISSET(STDIN_FILENO, &readfds)) {	24✔
296	uint8_t buf[1024] = {0};	10✔
297	ssize_t got = read(STDIN_FILENO, buf, sizeof(buf));	10✔
298
299	if(got == 0) {	10✔
300	output() << "EOF on stdin\n";	5✔
301	client.close();	5✔
302	break;	5✔
303	} else if(got == -1) {	5✔
304	output() << "Stdin error: " << errno << " " << err_to_string(errno) << "\n";	×
305	continue;	×
306	}
307
308	if(got == 2 && buf[1] == '\n') {	5✔
309	char cmd = buf[0];	×
310
311	if(cmd == 'R' \|\| cmd == 'r') {	×
312	output() << "Client initiated renegotiation\n";	×
313	client.renegotiate(cmd == 'R');	×
314	} else if(cmd == 'Q') {	×
315	output() << "Client initiated close\n";	×
316	client.close();	×
317	}
318	} else {
319	client.send(buf, got);	10✔
320	}
321	}
322
323	if(client.timeout_check()) {	19✔
324	output() << "Timeout detected\n";	×
325	}
326	}
327
328	::close(m_sockfd);	5✔
329	}	30✔
330
331	public:
332	using Command::flag_set;
333	using Command::output;
334
335	void send(std::span<const uint8_t> buf) const {	24✔
336	while(!buf.empty()) {	48✔
337	ssize_t sent = ::send(m_sockfd, buf.data(), buf.size(), MSG_NOSIGNAL);	24✔
338
339	if(sent == -1) {	24✔
340	if(errno == EINTR) {	×
341	sent = 0;
342	} else {
343	throw CLI_Error("Socket write failed errno=" + std::to_string(errno));	×
344	}
345	}
346
347	buf = buf.subspan(sent);	24✔
348	}
349	}	24✔
350
351	private:
352	static socket_type connect_to_host(const std::string& host, uint16_t port, bool tcp) {	5✔
353	addrinfo hints;	5✔
354	Botan::clear_mem(&hints, 1);	5✔
355	hints.ai_family = AF_UNSPEC;	5✔
356	hints.ai_socktype = tcp ? SOCK_STREAM : SOCK_DGRAM;	5✔
357	addrinfo res, rp = nullptr;	5✔
358
359	if(::getaddrinfo(host.c_str(), std::to_string(port).c_str(), &hints, &res) != 0) {	5✔
360	throw CLI_Error("getaddrinfo failed for " + host);	×
361	}
362
363	socket_type fd = 0;	5✔
364
365	for(rp = res; rp != nullptr; rp = rp->ai_next) {	10✔
366	fd = ::socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);	10✔
367
368	if(fd == invalid_socket()) {	10✔
369	continue;	×
370	}
371
372	if(::connect(fd, rp->ai_addr, static_cast<socklen_t>(rp->ai_addrlen)) != 0) {	10✔
373	::close(fd);	5✔
374	continue;	5✔
375	}
376
377	break;
378	}
379
380	::freeaddrinfo(res);	5✔
381
382	if(rp == nullptr) // no address succeeded	5✔
383	{
384	throw CLI_Error("connect failed");	×
385	}
386
387	return fd;	5✔
388	}
389
390	static void dgram_socket_write(int sockfd, const uint8_t buf[], size_t length) {
391	auto r = ::send(sockfd, buf, length, MSG_NOSIGNAL);
392
393	if(r == -1) {
394	throw CLI_Error("Socket write failed errno=" + std::to_string(errno));
395	}
396	}
397
398	socket_type m_sockfd = invalid_socket();
399	};
400
401	namespace {
402
403	std::ostream& Callbacks::output() {	1,160✔
404	return m_client_command.output();	1,160✔
405	}
406
407	bool Callbacks::flag_set(const std::string& flag_name) const {	29✔
408	return m_client_command.flag_set(flag_name);	29✔
409	}
410
411	void Callbacks::send(std::span<const uint8_t> buffer) {	24✔
412	m_client_command.send(buffer);	24✔
413	}
414
415	} // namespace
416
417	BOTAN_REGISTER_COMMAND("tls_client", TLS_Client);	6✔
418
419	} // namespace Botan_CLI
420
421	#endif

randombit / botan / 5587580523

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