Index/src / openssl / src / openssl_stream.cpp

src/openssl/src/openssl_stream.cpp

73.5% Lines (339/461) 89.7% List of functions (26/29) 42.9% Branches (459/1070)
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f(x) Functions (29)
Function Calls Lines Branches Blocks
boost::corosio::(anonymous namespace)::tls_method_compat() :65 2170x 100.0% 50.0% 66.0% boost::corosio::(anonymous namespace)::apply_hostname_verification(ssl_st*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>> const&) :75 2195x 100.0% 100.0% 100.0% boost::corosio::(anonymous namespace)::normalize_openssl_shutdown_read_error(std::__1::error_code) :91 8x 70.0% 50.0% 63.0% boost::corosio::detail::password_callback(char*, int, int, void*) :116 0 0.0% 0.0% 0.0% boost::corosio::detail::sni_callback(ssl_st*, int*, void*) :138 2x 92.3% 62.5% 88.0% boost::corosio::detail::openssl_native_context::openssl_native_context(boost::corosio::detail::tls_context_data const&) :163 4340x 93.7% 57.4% 100.0% boost::corosio::detail::openssl_native_context::~openssl_native_context() :295 6510x 100.0% 50.0% 100.0% boost::corosio::detail::get_openssl_context(boost::corosio::detail::tls_context_data const&) :303 2175x 100.0% – 100.0% boost::corosio::detail::get_openssl_context(boost::corosio::detail::tls_context_data const&)::'lambda'()::operator()() const :306 2170x 100.0% 50.0% 50.0% boost::corosio::openssl_stream::impl::impl(boost::capy::any_stream&, boost::corosio::tls_context) :325 4350x 100.0% 50.0% 100.0% boost::corosio::openssl_stream::impl::~impl() :331 4350x 100.0% 50.0% 100.0% boost::corosio::openssl_stream::impl::reset() :339 20x 80.0% 50.0% 71.0% boost::corosio::openssl_stream::impl::flush_output() :359 181666x 88.0% 47.8% 51.0% boost::corosio::openssl_stream::impl::read_input() :389 25666x 85.7% 44.6% 48.0% boost::corosio::openssl_stream::impl::do_read_some(boost::capy::buffer_array<16ul, false>) :409 155145x 56.9% 36.4% 41.0% boost::corosio::openssl_stream::impl::do_write_some(boost::capy::buffer_array<16ul, true>) :495 155148x 47.6% 20.2% 25.0% boost::corosio::openssl_stream::impl::do_handshake(int) :556 1517x 86.5% 46.7% 49.0% boost::corosio::openssl_stream::impl::do_shutdown() :609 36x 68.2% 45.5% 46.0% boost::corosio::openssl_stream::impl::init_ssl() :677 2175x 52.2% 50.0% 62.0% boost::corosio::openssl_stream::make_impl(boost::capy::any_stream&, boost::corosio::tls_context const&) :715 2175x 75.0% 25.0% 36.0% boost::corosio::openssl_stream::~openssl_stream() :729 4350x 100.0% 50.0% 100.0% boost::corosio::openssl_stream::openssl_stream(boost::corosio::openssl_stream&&) :734 0 0.0% – 0.0% boost::corosio::openssl_stream::operator=(boost::corosio::openssl_stream&&) :742 0 0.0% 0.0% 0.0% boost::corosio::openssl_stream::do_read_some(boost::capy::buffer_array<16ul, false>) :755 155145x 100.0% 45.5% 45.0% boost::corosio::openssl_stream::do_write_some(boost::capy::buffer_array<16ul, true>) :762 155148x 100.0% 45.5% 45.0% boost::corosio::openssl_stream::handshake(boost::corosio::tls_stream::handshake_type) :769 1517x 100.0% 45.5% 45.0% boost::corosio::openssl_stream::shutdown() :775 36x 100.0% 45.5% 45.0% boost::corosio::openssl_stream::reset() :781 16x 100.0% – 100.0% boost::corosio::openssl_stream::name() const :787 1x 100.0% 50.0% 66.0%
Line Branch TLA Hits Source Code
1 //
2 // Copyright (c) 2025 Vinnie Falco ([email protected])
3 //
4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 //
7 // Official repository: https://github.com/cppalliance/corosio
8 //
9
10 #include <boost/corosio/openssl_stream.hpp>
11 #include <boost/corosio/detail/config.hpp>
12 #include <boost/capy/buffers/buffer_array.hpp>
13 #include <boost/capy/ex/async_mutex.hpp>
14 #include <boost/capy/error.hpp>
15 #include <boost/capy/write.hpp>
16
17 // Internal context implementation
18 #include "src/tls/detail/context_impl.hpp"
19
20 #include <openssl/ssl.h>
21 #include <openssl/err.h>
22 #include <openssl/bio.h>
23 #include <openssl/x509.h>
24
25 #include <algorithm>
26 #include <array>
27 #include <cstring>
28 #include <vector>
29
30 /*
31 openssl_stream Architecture
32 ===========================
33
34 TLS layer wrapping an underlying stream (via any_stream). Supports one
35 concurrent read_some and one concurrent write_some (like Asio's ssl::stream).
36
37 Data Flow (using BIO pairs)
38 ---------------------------
39 App -> SSL_write -> int_bio_ -> BIO_read(ext_bio_) -> out_buf_ -> s_.write_some -> Network
40 App <- SSL_read <- int_bio_ <- BIO_write(ext_bio_) <- in_buf_ <- s_.read_some <- Network
41
42 WANT_READ / WANT_WRITE Pattern
43 ------------------------------
44 OpenSSL's SSL_read/SSL_write return SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE
45 when they need I/O. Our coroutine handles this by:
46
47 1. Call SSL_read or SSL_write
48 2. Check for pending output in ext_bio_ via BIO_ctrl_pending
49 3. If output pending: write to network via s_.write_some
50 4. If SSL_ERROR_WANT_READ: read from network into ext_bio_ via s_.read_some + BIO_write
51 5. Loop back to step 1
52
53 Renegotiation causes cross-direction I/O: SSL_read may need to write
54 handshake data, SSL_write may need to read. Each operation handles
55 whatever I/O direction OpenSSL requests.
56 */
57
58 namespace boost::corosio {
59
60 namespace {
61
62 constexpr std::size_t default_buffer_size = 16384;
63
64 inline SSL_METHOD const*
65 2170x tls_method_compat() noexcept
66 {
67 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
68
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 2170x return TLS_method();
69 #else
70 return SSLv23_method();
71 #endif
72 }
73
74 inline void
75 2195x apply_hostname_verification(SSL* ssl, std::string const& hostname)
76 {
77
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 2195x if (hostname.empty())
78 2191x return;
79
80 4x SSL_set_tlsext_host_name(ssl, hostname.c_str());
81
82 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
83 4x SSL_set1_host(ssl, hostname.c_str());
84 #else
85 if (auto* param = SSL_get0_param(ssl))
86 X509_VERIFY_PARAM_set1_host(param, hostname.c_str(), 0);
87 #endif
88 2195x }
89
90 inline std::error_code
91 8x normalize_openssl_shutdown_read_error(std::error_code ec) noexcept
92 {
93
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 8x if (!ec)
94 ✗ return ec;
95
96
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 10x if (ec == make_error_code(capy::error::eof) ||
97
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 2x ec == make_error_code(capy::error::canceled) ||
98
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 2x ec == std::errc::connection_reset ||
99 ✗ ec == std::errc::connection_aborted || ec == std::errc::broken_pipe)
100 8x return make_error_code(capy::error::stream_truncated);
101
102 ✗ return ec;
103 8x }
104
105 } // namespace
106
107 //
108 // Native context caching
109 //
110
111 namespace detail {
112
113 static int sni_ctx_data_index = -1;
114
115 static int
116 ✗ password_callback(char* buf, int size, int rwflag, void* userdata)
117 {
118 ✗ auto* cd = static_cast<tls_context_data const*>(userdata);
119 ✗ if (!cd || !cd->password_callback)
120 ✗ return 0;
121
122 ✗ tls_password_purpose purpose = (rwflag == 0)
123 ? tls_password_purpose::for_reading
124 : tls_password_purpose::for_writing;
125
126 std::string password =
127 ✗ cd->password_callback(static_cast<std::size_t>(size), purpose);
128
129 ✗ int len = static_cast<int>(password.size());
130 ✗ if (len > size)
131 ✗ len = size;
132
133 ✗ std::memcpy(buf, password.data(), static_cast<std::size_t>(len));
134 ✗ return len;
135 ✗ }
136
137 static int
138 2x sni_callback(SSL* ssl, int* /* alert */, void* /* arg */)
139 {
140 2x char const* servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
141
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 2x if (!servername)
142 ✗ return SSL_TLSEXT_ERR_NOACK;
143
144 2x SSL_CTX* ctx = SSL_get_SSL_CTX(ssl);
145 2x auto* cd = static_cast<tls_context_data const*>(
146 2x SSL_CTX_get_ex_data(ctx, sni_ctx_data_index));
147
148
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 2x if (cd && cd->servername_callback)
149 {
150
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 2x if (!cd->servername_callback(servername))
151 1x return SSL_TLSEXT_ERR_ALERT_FATAL;
152 1x }
153
154 1x return SSL_TLSEXT_ERR_OK;
155 2x }
156
157 class openssl_native_context : public native_context_base
158 {
159 public:
160 SSL_CTX* ctx_;
161 tls_context_data const* cd_;
162
163 4340x explicit openssl_native_context(tls_context_data const& cd)
164 2170x : ctx_(nullptr)
165 2170x , cd_(&cd)
166 4340x {
167
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 2170x ctx_ = SSL_CTX_new(tls_method_compat());
168
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 2170x if (!ctx_)
169 ✗ return;
170
171
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 2170x if (sni_ctx_data_index < 0)
172 4x sni_ctx_data_index =
173
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 4x SSL_CTX_get_ex_new_index(0, nullptr, nullptr, nullptr, nullptr);
174
175
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 2170x SSL_CTX_set_ex_data(
176 2170x ctx_, sni_ctx_data_index, const_cast<tls_context_data*>(&cd));
177
178
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 2170x if (cd.servername_callback)
179
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 2x SSL_CTX_set_tlsext_servername_callback(ctx_, sni_callback);
180
181
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 2170x SSL_CTX_set_mode(ctx_, SSL_MODE_ENABLE_PARTIAL_WRITE);
182
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 2170x SSL_CTX_set_mode(ctx_, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
183 #if defined(SSL_MODE_RELEASE_BUFFERS)
184
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 2170x SSL_CTX_set_mode(ctx_, SSL_MODE_RELEASE_BUFFERS);
185 #endif
186
187 2170x int verify_mode_flag = SSL_VERIFY_NONE;
188
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 2170x if (cd.verification_mode == tls_verify_mode::peer)
189 1081x verify_mode_flag = SSL_VERIFY_PEER;
190
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 1089x else if (cd.verification_mode == tls_verify_mode::require_peer)
191 3x verify_mode_flag =
192 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
193
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 2170x SSL_CTX_set_verify(ctx_, verify_mode_flag, nullptr);
194
195
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 2170x if (!cd.entity_certificate.empty())
196 {
197
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 1086x BIO* bio = BIO_new_mem_buf(
198 1086x cd.entity_certificate.data(),
199 1086x static_cast<int>(cd.entity_certificate.size()));
200
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 1086x if (bio)
201 {
202 1086x X509* cert = nullptr;
203
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 1086x if (cd.entity_cert_format == tls_file_format::pem)
204
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 1086x cert = PEM_read_bio_X509(bio, nullptr, nullptr, nullptr);
205 else
206 ✗ cert = d2i_X509_bio(bio, nullptr);
207
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 1086x if (cert)
208 {
209
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 1086x SSL_CTX_use_certificate(ctx_, cert);
210
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 1086x X509_free(cert);
211 1086x }
212
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 1086x BIO_free(bio);
213 1086x }
214 1086x }
215
216
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 2170x if (!cd.certificate_chain.empty())
217 {
218
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 1x BIO* bio = BIO_new_mem_buf(
219 1x cd.certificate_chain.data(),
220 1x static_cast<int>(cd.certificate_chain.size()));
221
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 1x if (bio)
222 {
223 1x X509* entity =
224
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 1x PEM_read_bio_X509(bio, nullptr, nullptr, nullptr);
225
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 1x if (entity)
226 {
227
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 1x SSL_CTX_use_certificate(ctx_, entity);
228
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 1x X509_free(entity);
229 1x }
230
231 X509* cert;
232
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 2x while ((cert = PEM_read_bio_X509(
233 2x bio, nullptr, nullptr, nullptr)) != nullptr)
234 {
235
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 1x SSL_CTX_add_extra_chain_cert(ctx_, cert);
236 }
237
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 1x ERR_clear_error();
238
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 1x BIO_free(bio);
239 1x }
240 1x }
241
242
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 2170x if (!cd.private_key.empty())
243 {
244
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 1087x BIO* bio = BIO_new_mem_buf(
245 1087x cd.private_key.data(), static_cast<int>(cd.private_key.size()));
246
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 1087x if (bio)
247 {
248 1087x EVP_PKEY* pkey = nullptr;
249
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 1087x if (cd.private_key_format == tls_file_format::pem)
250 {
251
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 1087x if (cd.password_callback)
252 ✗ pkey = PEM_read_bio_PrivateKey(
253 ✗ bio, nullptr, password_callback,
254 ✗ const_cast<tls_context_data*>(&cd));
255 else
256
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 1087x pkey = PEM_read_bio_PrivateKey(
257 1087x bio, nullptr, nullptr, nullptr);
258 1087x }
259 else
260 ✗ pkey = d2i_PrivateKey_bio(bio, nullptr);
261
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 1087x if (pkey)
262 {
263
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 1087x SSL_CTX_use_PrivateKey(ctx_, pkey);
264
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 1087x EVP_PKEY_free(pkey);
265 1087x }
266
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 1087x BIO_free(bio);
267 1087x }
268 1087x }
269
270
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 2170x X509_STORE* store = SSL_CTX_get_cert_store(ctx_);
271
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 3265x for (auto const& ca : cd.ca_certificates)
272 {
273
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 1095x BIO* bio = BIO_new_mem_buf(ca.data(), static_cast<int>(ca.size()));
274
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 1095x if (bio)
275 {
276
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 1095x X509* cert = PEM_read_bio_X509(bio, nullptr, nullptr, nullptr);
277
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 1095x if (cert)
278 {
279
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 1094x X509_STORE_add_cert(store, cert);
280
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 1094x X509_free(cert);
281 1094x }
282
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 1095x BIO_free(bio);
283 1095x }
284 }
285
286
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 2170x SSL_CTX_set_verify_depth(ctx_, cd.verify_depth);
287
288
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 2170x if (!cd.ciphersuites.empty())
289 {
290
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 3x SSL_CTX_set_security_level(ctx_, 0);
291
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 3x SSL_CTX_set_cipher_list(ctx_, cd.ciphersuites.c_str());
292 3x }
293 4340x }
294
295 6510x ~openssl_native_context() override
296 6510x {
297
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 2170x if (ctx_)
298
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 2170x SSL_CTX_free(ctx_);
299 6510x }
300 };
301
302 inline SSL_CTX*
303 2175x get_openssl_context(tls_context_data const& cd)
304 {
305 static char key;
306
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 4345x auto* p = cd.find(&key, [&] { return new openssl_native_context(cd); });
307 2175x return static_cast<openssl_native_context*>(p)->ctx_;
308 }
309
310 } // namespace detail
311
312 struct openssl_stream::impl
313 {
314 capy::any_stream& s_;
315 tls_context ctx_;
316 2175x SSL* ssl_ = nullptr;
317 2175x BIO* ext_bio_ = nullptr;
318 2175x bool used_ = false;
319
320 std::vector<char> in_buf_;
321 std::vector<char> out_buf_;
322
323 capy::async_mutex io_cm_;
324
325 6525x impl(capy::any_stream& s, tls_context ctx) : s_(s), ctx_(std::move(ctx))
326 2175x {
327
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 2175x in_buf_.resize(default_buffer_size);
328
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 2175x out_buf_.resize(default_buffer_size);
329 4350x }
330
331 4350x ~impl()
332 2175x {
333
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 2175x if (ext_bio_)
334
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 2175x BIO_free(ext_bio_);
335
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 2175x if (ssl_)
336
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 2175x SSL_free(ssl_);
337 4350x }
338
339 20x void reset()
340 {
341
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 20x if (!ssl_)
342 ✗ return;
343
344 // Preserves SSL* and BIO pair, releases session state
345 20x SSL_clear(ssl_);
346
347 // Drain stale data from the external BIO
348 char drain[1024];
349
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 20x while (BIO_ctrl_pending(ext_bio_) > 0)
350 ✗ BIO_read(ext_bio_, drain, sizeof(drain));
351
352 // SSL_clear clears per-session settings; reapply hostname
353 20x auto& cd = detail::get_tls_context_data(ctx_);
354 20x apply_hostname_verification(ssl_, cd.hostname);
355
356 20x used_ = false;
357 20x }
358
359
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 1538442x capy::task<std::error_code> flush_output()
360 181666x {
361
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 339191x while (BIO_ctrl_pending(ext_bio_) > 0)
362 {
363 157528x std::size_t got = 0;
364
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 315056x while (BIO_ctrl_pending(ext_bio_) > 0 && got < out_buf_.size())
365 {
366
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 157528x int put = static_cast<int>(BIO_ctrl_pending(ext_bio_));
367
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 157528x put = (std::min)(put, static_cast<int>(out_buf_.size() - got));
368
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 157528x int r = BIO_read(ext_bio_, out_buf_.data() + got, put);
369
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 157528x if (r <= 0)
370 ✗ break;
371 157528x got += static_cast<std::size_t>(r);
372 157528x }
373
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 157528x if (got == 0)
374 ✗ break;
375
376 {
377
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 157528x auto [lec, guard] = co_await io_cm_.scoped_lock();
378
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 472584x if (lec)
379 ✗ co_return lec;
380
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 1102696x auto [ec, n] = co_await capy::write(
381 472584x s_, capy::const_buffer(out_buf_.data(), got));
382
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 157528x if (ec)
383
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 6x co_return ec;
384 472584x }
385 472584x }
386
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 181663x co_return std::error_code{};
387 315056x }
388
389
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 230994x capy::task<std::error_code> read_input()
390 25666x {
391
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 25666x auto [lec, guard] = co_await io_cm_.scoped_lock();
392
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 76998x if (lec)
393 ✗ co_return lec;
394
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 179662x auto [ec, n] = co_await s_.read_some(
395 76998x capy::mutable_buffer(in_buf_.data(), in_buf_.size()));
396
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 25666x if (ec)
397
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 1394x co_return ec;
398
399
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 49938x int got = BIO_write(ext_bio_, in_buf_.data(), static_cast<int>(n));
400
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 49938x if (got < static_cast<int>(n))
401 {
402 ✗ co_return make_error_code(std::errc::no_buffer_space);
403 }
404
405
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 24969x co_return std::error_code{};
406 128330x }
407
408 capy::io_task<std::size_t>
409
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 775725x do_read_some(capy::mutable_buffer_array<capy::detail::max_iovec_> buffers)
410 155145x {
411 155145x std::error_code ec;
412 155145x std::size_t total_read = 0;
413
414
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 310290x for (auto& buf : buffers)
415 {
416 155145x char* dest = static_cast<char*>(buf.data());
417 155145x int remaining = static_cast<int>(buf.size());
418
419
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 226204x while (remaining > 0)
420 {
421
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 226204x ERR_clear_error();
422
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 226204x int ret = SSL_read(ssl_, dest, remaining);
423
424
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 226204x if (ret > 0)
425 {
426 155118x dest += ret;
427 155118x remaining -= ret;
428 155118x total_read += static_cast<std::size_t>(ret);
429
430
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 155118x if (total_read > 0)
431
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 310263x co_return {std::error_code{}, total_read};
432 ✗ }
433 else
434 {
435
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 71086x int err = SSL_get_error(ssl_, ret);
436
437
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 71086x if (err == SSL_ERROR_WANT_WRITE)
438 {
439 ✗ ec = co_await flush_output();
440 ✗ if (ec)
441 ✗ co_return {ec, total_read};
442 ✗ }
443
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 71086x else if (err == SSL_ERROR_WANT_READ)
444 {
445
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 94752x ec = co_await flush_output();
446
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 71064x if (ec)
447 ✗ co_return {ec, total_read};
448
449
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 94752x ec = co_await read_input();
450
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 23688x if (ec)
451 {
452
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 5x if (ec == make_error_code(capy::error::eof))
453 {
454 ✗ if (SSL_get_shutdown(ssl_) &
455 SSL_RECEIVED_SHUTDOWN)
456 ✗ ec = make_error_code(capy::error::eof);
457 else
458 ✗ ec = make_error_code(
459 capy::error::stream_truncated);
460 ✗ }
461
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 5x co_return {ec, total_read};
462 }
463 23683x }
464
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 22x else if (err == SSL_ERROR_ZERO_RETURN)
465 {
466
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 66x co_return {
467 44x make_error_code(capy::error::eof), total_read};
468 }
469 ✗ else if (err == SSL_ERROR_SYSCALL)
470 {
471 ✗ unsigned long ssl_err = ERR_get_error();
472 ✗ if (ssl_err == 0)
473 ✗ ec = make_error_code(capy::error::stream_truncated);
474 else
475 ✗ ec = std::error_code(
476 ✗ static_cast<int>(ssl_err),
477 ✗ std::system_category());
478 ✗ co_return {ec, total_read};
479 ✗ }
480 else
481 {
482 ✗ unsigned long ssl_err = ERR_get_error();
483 ✗ ec = std::error_code(
484 ✗ static_cast<int>(ssl_err), std::system_category());
485 ✗ co_return {ec, total_read};
486 ✗ }
487 71086x }
488 226204x }
489 155145x }
490
491 ✗ co_return {std::error_code{}, total_read};
492 249897x }
493
494 capy::io_task<std::size_t>
495
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 775740x do_write_some(capy::const_buffer_array<capy::detail::max_iovec_> buffers)
496 155148x {
497 155148x std::error_code ec;
498 155148x std::size_t total_written = 0;
499
500
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 310296x for (auto const& buf : buffers)
501 {
502 155148x char const* src = static_cast<char const*>(buf.data());
503 155148x int remaining = static_cast<int>(buf.size());
504
505
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 465444x while (remaining > 0)
506 {
507
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 465444x ERR_clear_error();
508
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 465444x int ret = SSL_write(ssl_, src, remaining);
509
510
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 465444x if (ret > 0)
511 {
512 465444x src += ret;
513 465444x remaining -= ret;
514 465444x total_written += static_cast<std::size_t>(ret);
515
516
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 465444x if (total_written > 0)
517 {
518
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 775740x ec = co_await flush_output();
519
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 155148x co_return {ec, total_written};
520 }
521 ✗ }
522 else
523 {
524 ✗ int err = SSL_get_error(ssl_, ret);
525
526 ✗ if (err == SSL_ERROR_WANT_WRITE)
527 {
528 ✗ ec = co_await flush_output();
529 ✗ if (ec)
530 ✗ co_return {ec, total_written};
531 ✗ }
532 ✗ else if (err == SSL_ERROR_WANT_READ)
533 {
534 ✗ ec = co_await flush_output();
535 ✗ if (ec)
536 ✗ co_return {ec, total_written};
537
538 ✗ ec = co_await read_input();
539 ✗ if (ec)
540 ✗ co_return {ec, total_written};
541 ✗ }
542 else
543 {
544 ✗ unsigned long ssl_err = ERR_get_error();
545 ✗ ec = std::error_code(
546 ✗ static_cast<int>(ssl_err), std::system_category());
547 ✗ co_return {ec, total_written};
548 ✗ }
549 ✗ }
550 155148x }
551 155148x }
552
553 ✗ co_return {std::error_code{}, total_written};
554 465444x }
555
556
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 9233x capy::io_task<> do_handshake(int type)
557 1517x {
558
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 3165x if (used_)
559
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 4x reset();
560
561 3165x std::error_code ec;
562
563 8289x while (true)
564 {
565
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 8289x ERR_clear_error();
566 8289x int ret;
567
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 8289x if (type == openssl_stream::client)
568
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 1516x ret = SSL_connect(ssl_);
569 else
570
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 6773x ret = SSL_accept(ssl_);
571
572
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 8289x if (ret == 1)
573 {
574 2472x used_ = true;
575
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 4813x ec = co_await flush_output();
576
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 824x co_return {ec};
577 }
578 else
579 {
580
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 5817x int err = SSL_get_error(ssl_, ret);
581
582
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 5817x if (err == SSL_ERROR_WANT_WRITE)
583 {
584 ✗ ec = co_await flush_output();
585 ✗ if (ec)
586 ✗ co_return {ec};
587 ✗ }
588
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 5817x else if (err == SSL_ERROR_WANT_READ)
589 {
590
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 7744x ec = co_await flush_output();
591
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 5808x if (ec)
592 ✗ co_return {ec};
593
594
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 7744x ec = co_await read_input();
595
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 1936x if (ec)
596
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 684x co_return {ec};
597 1252x }
598 else
599 {
600
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 9x unsigned long ssl_err = ERR_get_error();
601 18x ec = std::error_code(
602 9x static_cast<int>(ssl_err), std::system_category());
603
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 9x co_return {ec};
604 9x }
605 5817x }
606 6641x }
607 10909x }
608
609
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 236x capy::io_task<> do_shutdown()
610 36x {
611 92x std::error_code ec;
612
613 210x while (true)
614 {
615
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 210x ERR_clear_error();
616
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 210x int ret = SSL_shutdown(ssl_);
617
618
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 210x if (ret == 1)
619 {
620
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 112x ec = co_await flush_output();
621
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 28x co_return {ec};
622 }
623
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 126x else if (ret == 0)
624 {
625
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 88x ec = co_await flush_output();
626
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 66x if (ec)
627 ✗ co_return {ec};
628
629
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 88x ec = co_await read_input();
630
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 22x if (ec)
631 {
632 2x ec = normalize_openssl_shutdown_read_error(ec);
633
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 2x co_return {ec};
634 }
635 20x }
636 else
637 {
638
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 60x int err = SSL_get_error(ssl_, ret);
639
640
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 60x if (err == SSL_ERROR_WANT_WRITE)
641 {
642 ✗ ec = co_await flush_output();
643 ✗ if (ec)
644 ✗ co_return {ec};
645 ✗ }
646
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 60x else if (err == SSL_ERROR_WANT_READ)
647 {
648
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 80x ec = co_await flush_output();
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 60x if (ec)
650 ✗ co_return {ec};
651
652
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 80x ec = co_await read_input();
653
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 20x if (ec)
654 {
655 6x ec = normalize_openssl_shutdown_read_error(ec);
656
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 6x co_return {ec};
657 }
658 14x }
659 else
660 {
661 ✗ unsigned long ssl_err = ERR_get_error();
662 ✗ if (ssl_err == 0 && err == SSL_ERROR_SYSCALL)
663 {
664 ✗ ec = {};
665 ✗ }
666 else
667 {
668 ✗ ec = std::error_code(
669 ✗ static_cast<int>(ssl_err), std::system_category());
670 }
671 ✗ co_return {ec};
672 ✗ }
673 60x }
674 154x }
675 260x }
676
677 2175x std::error_code init_ssl()
678 {
679 2175x auto& cd = detail::get_tls_context_data(ctx_);
680 2175x SSL_CTX* native_ctx = detail::get_openssl_context(cd);
681
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682 {
683 ✗ unsigned long err = ERR_get_error();
684 ✗ return std::error_code(
685 ✗ static_cast<int>(err), std::system_category());
686 }
687
688 2175x ssl_ = SSL_new(native_ctx);
689
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690 {
691 ✗ unsigned long err = ERR_get_error();
692 ✗ return std::error_code(
693 ✗ static_cast<int>(err), std::system_category());
694 }
695
696 2175x BIO* int_bio = nullptr;
697
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 2175x if (!BIO_new_bio_pair(&int_bio, 0, &ext_bio_, 0))
698 {
699 ✗ unsigned long err = ERR_get_error();
700 ✗ SSL_free(ssl_);
701 ✗ ssl_ = nullptr;
702 ✗ return std::error_code(
703 ✗ static_cast<int>(err), std::system_category());
704 }
705
706 2175x SSL_set_bio(ssl_, int_bio, int_bio);
707
708 2175x apply_hostname_verification(ssl_, cd.hostname);
709
710 2175x return {};
711 2175x }
712 };
713
714 openssl_stream::impl*
715 2175x openssl_stream::make_impl(capy::any_stream& stream, tls_context const& ctx)
716 {
717
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 2175x auto* p = new impl(stream, ctx);
718
719 2175x auto ec = p->init_ssl();
720
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 2175x if (ec)
721 {
722 ✗ delete p;
723 ✗ return nullptr;
724 }
725
726 2175x return p;
727 2175x }
728
729 4350x openssl_stream::~openssl_stream()
730 2175x {
731
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 2175x delete impl_;
732 4350x }
733
734 ✗ openssl_stream::openssl_stream(openssl_stream&& other) noexcept
735 ✗ : stream_(std::move(other.stream_))
736 ✗ , impl_(other.impl_)
737 ✗ {
738 ✗ other.impl_ = nullptr;
739 ✗ }
740
741 openssl_stream&
742 ✗ openssl_stream::operator=(openssl_stream&& other) noexcept
743 {
744 ✗ if (this != &other)
745 {
746 ✗ delete impl_;
747 ✗ stream_ = std::move(other.stream_);
748 ✗ impl_ = other.impl_;
749 ✗ other.impl_ = nullptr;
750 ✗ }
751 ✗ return *this;
752 }
753
754 capy::io_task<std::size_t>
755
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 1086015x openssl_stream::do_read_some(
756 capy::mutable_buffer_array<capy::detail::max_iovec_> buffers)
757 155145x {
758
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 775725x co_return co_await impl_->do_read_some(buffers);
759 310290x }
760
761 capy::io_task<std::size_t>
762
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 1086036x openssl_stream::do_write_some(
763 capy::const_buffer_array<capy::detail::max_iovec_> buffers)
764 155148x {
765
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 775740x co_return co_await impl_->do_write_some(buffers);
766 310296x }
767
768 capy::io_task<>
769
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 10619x openssl_stream::handshake(handshake_type type)
770 1517x {
771
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 7585x co_return co_await impl_->do_handshake(type);
772 3034x }
773
774 capy::io_task<>
775
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 252x openssl_stream::shutdown()
776 36x {
777
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 144x co_return co_await impl_->do_shutdown();
778 72x }
779
780 void
781 16x openssl_stream::reset()
782 {
783 16x impl_->reset();
784 16x }
785
786 std::string_view
787 1x openssl_stream::name() const noexcept
788 {
789
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 1x return "openssl";
790 }
791
792 } // namespace boost::corosio
793