2 * Copyright 2015 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include "SSLContext.h"
19 #include <openssl/err.h>
20 #include <openssl/rand.h>
21 #include <openssl/ssl.h>
22 #include <openssl/x509v3.h>
24 #include <folly/Format.h>
25 #include <folly/SpinLock.h>
27 // ---------------------------------------------------------------------
28 // SSLContext implementation
29 // ---------------------------------------------------------------------
31 struct CRYPTO_dynlock_value {
37 bool SSLContext::initialized_ = false;
38 std::mutex SSLContext::mutex_;
39 #ifdef OPENSSL_NPN_NEGOTIATED
40 int SSLContext::sNextProtocolsExDataIndex_ = -1;
43 #ifndef SSLCONTEXT_NO_REFCOUNT
44 uint64_t SSLContext::count_ = 0;
47 // SSLContext implementation
48 SSLContext::SSLContext(SSLVersion version) {
50 std::lock_guard<std::mutex> g(mutex_);
51 #ifndef SSLCONTEXT_NO_REFCOUNT
54 initializeOpenSSLLocked();
57 ctx_ = SSL_CTX_new(SSLv23_method());
58 if (ctx_ == nullptr) {
59 throw std::runtime_error("SSL_CTX_new: " + getErrors());
65 opt = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3;
68 opt = SSL_OP_NO_SSLv2;
74 int newOpt = SSL_CTX_set_options(ctx_, opt);
75 DCHECK((newOpt & opt) == opt);
77 SSL_CTX_set_mode(ctx_, SSL_MODE_AUTO_RETRY);
79 checkPeerName_ = false;
81 #if OPENSSL_VERSION_NUMBER >= 0x1000105fL && !defined(OPENSSL_NO_TLSEXT)
82 SSL_CTX_set_tlsext_servername_callback(ctx_, baseServerNameOpenSSLCallback);
83 SSL_CTX_set_tlsext_servername_arg(ctx_, this);
87 SSLContext::~SSLContext() {
88 if (ctx_ != nullptr) {
93 #ifdef OPENSSL_NPN_NEGOTIATED
94 deleteNextProtocolsStrings();
97 #ifndef SSLCONTEXT_NO_REFCOUNT
99 std::lock_guard<std::mutex> g(mutex_);
101 cleanupOpenSSLLocked();
107 void SSLContext::ciphers(const std::string& ciphers) {
108 providedCiphersString_ = ciphers;
109 setCiphersOrThrow(ciphers);
112 void SSLContext::setCiphersOrThrow(const std::string& ciphers) {
113 int rc = SSL_CTX_set_cipher_list(ctx_, ciphers.c_str());
114 if (ERR_peek_error() != 0) {
115 throw std::runtime_error("SSL_CTX_set_cipher_list: " + getErrors());
118 throw std::runtime_error("None of specified ciphers are supported");
122 void SSLContext::setVerificationOption(const SSLContext::SSLVerifyPeerEnum&
124 CHECK(verifyPeer != SSLVerifyPeerEnum::USE_CTX); // dont recurse
125 verifyPeer_ = verifyPeer;
128 int SSLContext::getVerificationMode(const SSLContext::SSLVerifyPeerEnum&
130 CHECK(verifyPeer != SSLVerifyPeerEnum::USE_CTX);
131 int mode = SSL_VERIFY_NONE;
133 // case SSLVerifyPeerEnum::USE_CTX: // can't happen
136 case SSLVerifyPeerEnum::VERIFY:
137 mode = SSL_VERIFY_PEER;
140 case SSLVerifyPeerEnum::VERIFY_REQ_CLIENT_CERT:
141 mode = SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
144 case SSLVerifyPeerEnum::NO_VERIFY:
145 mode = SSL_VERIFY_NONE;
154 int SSLContext::getVerificationMode() {
155 return getVerificationMode(verifyPeer_);
158 void SSLContext::authenticate(bool checkPeerCert, bool checkPeerName,
159 const std::string& peerName) {
162 mode = SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT | SSL_VERIFY_CLIENT_ONCE;
163 checkPeerName_ = checkPeerName;
164 peerFixedName_ = peerName;
166 mode = SSL_VERIFY_NONE;
167 checkPeerName_ = false; // can't check name without cert!
168 peerFixedName_.clear();
170 SSL_CTX_set_verify(ctx_, mode, nullptr);
173 void SSLContext::loadCertificate(const char* path, const char* format) {
174 if (path == nullptr || format == nullptr) {
175 throw std::invalid_argument(
176 "loadCertificateChain: either <path> or <format> is nullptr");
178 if (strcmp(format, "PEM") == 0) {
179 if (SSL_CTX_use_certificate_chain_file(ctx_, path) == 0) {
180 int errnoCopy = errno;
181 std::string reason("SSL_CTX_use_certificate_chain_file: ");
184 reason.append(getErrors(errnoCopy));
185 throw std::runtime_error(reason);
188 throw std::runtime_error("Unsupported certificate format: " + std::string(format));
192 void SSLContext::loadPrivateKey(const char* path, const char* format) {
193 if (path == nullptr || format == nullptr) {
194 throw std::invalid_argument(
195 "loadPrivateKey: either <path> or <format> is nullptr");
197 if (strcmp(format, "PEM") == 0) {
198 if (SSL_CTX_use_PrivateKey_file(ctx_, path, SSL_FILETYPE_PEM) == 0) {
199 throw std::runtime_error("SSL_CTX_use_PrivateKey_file: " + getErrors());
202 throw std::runtime_error("Unsupported private key format: " + std::string(format));
206 void SSLContext::loadTrustedCertificates(const char* path) {
207 if (path == nullptr) {
208 throw std::invalid_argument(
209 "loadTrustedCertificates: <path> is nullptr");
211 if (SSL_CTX_load_verify_locations(ctx_, path, nullptr) == 0) {
212 throw std::runtime_error("SSL_CTX_load_verify_locations: " + getErrors());
216 void SSLContext::loadTrustedCertificates(X509_STORE* store) {
217 SSL_CTX_set_cert_store(ctx_, store);
220 void SSLContext::loadClientCAList(const char* path) {
221 auto clientCAs = SSL_load_client_CA_file(path);
222 if (clientCAs == nullptr) {
223 LOG(ERROR) << "Unable to load ca file: " << path;
226 SSL_CTX_set_client_CA_list(ctx_, clientCAs);
229 void SSLContext::randomize() {
233 void SSLContext::passwordCollector(std::shared_ptr<PasswordCollector> collector) {
234 if (collector == nullptr) {
235 LOG(ERROR) << "passwordCollector: ignore invalid password collector";
238 collector_ = collector;
239 SSL_CTX_set_default_passwd_cb(ctx_, passwordCallback);
240 SSL_CTX_set_default_passwd_cb_userdata(ctx_, this);
243 #if OPENSSL_VERSION_NUMBER >= 0x1000105fL && !defined(OPENSSL_NO_TLSEXT)
245 void SSLContext::setServerNameCallback(const ServerNameCallback& cb) {
249 void SSLContext::addClientHelloCallback(const ClientHelloCallback& cb) {
250 clientHelloCbs_.push_back(cb);
253 int SSLContext::baseServerNameOpenSSLCallback(SSL* ssl, int* al, void* data) {
254 SSLContext* context = (SSLContext*)data;
256 if (context == nullptr) {
257 return SSL_TLSEXT_ERR_NOACK;
260 for (auto& cb : context->clientHelloCbs_) {
261 // Generic callbacks to happen after we receive the Client Hello.
262 // For example, we use one to switch which cipher we use depending
263 // on the user's TLS version. Because the primary purpose of
264 // baseServerNameOpenSSLCallback is for SNI support, and these callbacks
265 // are side-uses, we ignore any possible failures other than just logging
270 if (!context->serverNameCb_) {
271 return SSL_TLSEXT_ERR_NOACK;
274 ServerNameCallbackResult ret = context->serverNameCb_(ssl);
276 case SERVER_NAME_FOUND:
277 return SSL_TLSEXT_ERR_OK;
278 case SERVER_NAME_NOT_FOUND:
279 return SSL_TLSEXT_ERR_NOACK;
280 case SERVER_NAME_NOT_FOUND_ALERT_FATAL:
281 *al = TLS1_AD_UNRECOGNIZED_NAME;
282 return SSL_TLSEXT_ERR_ALERT_FATAL;
287 return SSL_TLSEXT_ERR_NOACK;
290 void SSLContext::switchCiphersIfTLS11(
292 const std::string& tls11CipherString) {
294 CHECK(!tls11CipherString.empty()) << "Shouldn't call if empty alt ciphers";
296 if (TLS1_get_client_version(ssl) <= TLS1_VERSION) {
297 // We only do this for TLS v 1.1 and later
301 // Prefer AES for TLS versions 1.1 and later since these are not
302 // vulnerable to BEAST attacks on AES. Note that we're setting the
303 // cipher list on the SSL object, not the SSL_CTX object, so it will
304 // only last for this request.
305 int rc = SSL_set_cipher_list(ssl, tls11CipherString.c_str());
306 if ((rc == 0) || ERR_peek_error() != 0) {
307 // This shouldn't happen since we checked for this when proxygen
309 LOG(WARNING) << "ssl_cipher: No specified ciphers supported for switch";
310 SSL_set_cipher_list(ssl, providedCiphersString_.c_str());
315 #ifdef OPENSSL_NPN_NEGOTIATED
316 bool SSLContext::setAdvertisedNextProtocols(const std::list<std::string>& protocols) {
317 return setRandomizedAdvertisedNextProtocols({{1, protocols}});
320 bool SSLContext::setRandomizedAdvertisedNextProtocols(
321 const std::list<NextProtocolsItem>& items) {
322 unsetNextProtocols();
323 if (items.size() == 0) {
326 int total_weight = 0;
327 for (const auto &item : items) {
328 if (item.protocols.size() == 0) {
331 AdvertisedNextProtocolsItem advertised_item;
332 advertised_item.length = 0;
333 for (const auto& proto : item.protocols) {
334 ++advertised_item.length;
335 unsigned protoLength = proto.length();
336 if (protoLength >= 256) {
337 deleteNextProtocolsStrings();
340 advertised_item.length += protoLength;
342 advertised_item.protocols = new unsigned char[advertised_item.length];
343 if (!advertised_item.protocols) {
344 throw std::runtime_error("alloc failure");
346 unsigned char* dst = advertised_item.protocols;
347 for (auto& proto : item.protocols) {
348 unsigned protoLength = proto.length();
349 *dst++ = (unsigned char)protoLength;
350 memcpy(dst, proto.data(), protoLength);
353 total_weight += item.weight;
354 advertised_item.probability = item.weight;
355 advertisedNextProtocols_.push_back(advertised_item);
357 if (total_weight == 0) {
358 deleteNextProtocolsStrings();
361 for (auto &advertised_item : advertisedNextProtocols_) {
362 advertised_item.probability /= total_weight;
364 SSL_CTX_set_next_protos_advertised_cb(
365 ctx_, advertisedNextProtocolCallback, this);
366 SSL_CTX_set_next_proto_select_cb(
367 ctx_, selectNextProtocolCallback, this);
371 void SSLContext::deleteNextProtocolsStrings() {
372 for (auto protocols : advertisedNextProtocols_) {
373 delete[] protocols.protocols;
375 advertisedNextProtocols_.clear();
378 void SSLContext::unsetNextProtocols() {
379 deleteNextProtocolsStrings();
380 SSL_CTX_set_next_protos_advertised_cb(ctx_, nullptr, nullptr);
381 SSL_CTX_set_next_proto_select_cb(ctx_, nullptr, nullptr);
384 int SSLContext::advertisedNextProtocolCallback(SSL* ssl,
385 const unsigned char** out, unsigned int* outlen, void* data) {
386 SSLContext* context = (SSLContext*)data;
387 if (context == nullptr || context->advertisedNextProtocols_.empty()) {
390 } else if (context->advertisedNextProtocols_.size() == 1) {
391 *out = context->advertisedNextProtocols_[0].protocols;
392 *outlen = context->advertisedNextProtocols_[0].length;
394 uintptr_t selected_index = reinterpret_cast<uintptr_t>(SSL_get_ex_data(ssl,
395 sNextProtocolsExDataIndex_));
396 if (selected_index) {
398 *out = context->advertisedNextProtocols_[selected_index].protocols;
399 *outlen = context->advertisedNextProtocols_[selected_index].length;
401 unsigned char random_byte;
402 RAND_bytes(&random_byte, 1);
403 double random_value = random_byte / 255.0;
405 for (size_t i = 0; i < context->advertisedNextProtocols_.size(); ++i) {
406 sum += context->advertisedNextProtocols_[i].probability;
407 if (sum < random_value &&
408 i + 1 < context->advertisedNextProtocols_.size()) {
411 uintptr_t selected = i + 1;
412 SSL_set_ex_data(ssl, sNextProtocolsExDataIndex_, (void *)selected);
413 *out = context->advertisedNextProtocols_[i].protocols;
414 *outlen = context->advertisedNextProtocols_[i].length;
419 return SSL_TLSEXT_ERR_OK;
422 #if defined(SSL_MODE_HANDSHAKE_CUTTHROUGH) && \
423 FOLLY_SSLCONTEXT_USE_TLS_FALSE_START
424 SSLContext::SSLFalseStartChecker::SSLFalseStartChecker() :
426 * The list was generated as follows:
427 * grep "_CK_" openssl-1.0.1e/ssl/s3_lib.c -A 4 |
428 * while read A && read B && read C && read D && read E && read F; do
429 * echo $A $B $C $D $E; done |
430 * grep "\(SSL_kDHr\|SSL_kDHd\|SSL_kEDH\|SSL_kECDHr\|
431 * SSL_kECDHe\|SSL_kEECDH\)" | grep -v SSL_aNULL | grep SSL_AES |
432 * awk -F, '{ print $1"," }'
435 TLS1_CK_DH_DSS_WITH_AES_128_SHA,
436 TLS1_CK_DH_RSA_WITH_AES_128_SHA,
437 TLS1_CK_DHE_DSS_WITH_AES_128_SHA,
438 TLS1_CK_DHE_RSA_WITH_AES_128_SHA,
439 TLS1_CK_DH_DSS_WITH_AES_256_SHA,
440 TLS1_CK_DH_RSA_WITH_AES_256_SHA,
441 TLS1_CK_DHE_DSS_WITH_AES_256_SHA,
442 TLS1_CK_DHE_RSA_WITH_AES_256_SHA,
443 TLS1_CK_DH_DSS_WITH_AES_128_SHA256,
444 TLS1_CK_DH_RSA_WITH_AES_128_SHA256,
445 TLS1_CK_DHE_DSS_WITH_AES_128_SHA256,
446 TLS1_CK_DHE_RSA_WITH_AES_128_SHA256,
447 TLS1_CK_DH_DSS_WITH_AES_256_SHA256,
448 TLS1_CK_DH_RSA_WITH_AES_256_SHA256,
449 TLS1_CK_DHE_DSS_WITH_AES_256_SHA256,
450 TLS1_CK_DHE_RSA_WITH_AES_256_SHA256,
451 TLS1_CK_DHE_RSA_WITH_AES_128_GCM_SHA256,
452 TLS1_CK_DHE_RSA_WITH_AES_256_GCM_SHA384,
453 TLS1_CK_DH_RSA_WITH_AES_128_GCM_SHA256,
454 TLS1_CK_DH_RSA_WITH_AES_256_GCM_SHA384,
455 TLS1_CK_DHE_DSS_WITH_AES_128_GCM_SHA256,
456 TLS1_CK_DHE_DSS_WITH_AES_256_GCM_SHA384,
457 TLS1_CK_DH_DSS_WITH_AES_128_GCM_SHA256,
458 TLS1_CK_DH_DSS_WITH_AES_256_GCM_SHA384,
459 TLS1_CK_ECDH_ECDSA_WITH_AES_128_CBC_SHA,
460 TLS1_CK_ECDH_ECDSA_WITH_AES_256_CBC_SHA,
461 TLS1_CK_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
462 TLS1_CK_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
463 TLS1_CK_ECDH_RSA_WITH_AES_128_CBC_SHA,
464 TLS1_CK_ECDH_RSA_WITH_AES_256_CBC_SHA,
465 TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA,
466 TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA,
467 TLS1_CK_ECDHE_ECDSA_WITH_AES_128_SHA256,
468 TLS1_CK_ECDHE_ECDSA_WITH_AES_256_SHA384,
469 TLS1_CK_ECDH_ECDSA_WITH_AES_128_SHA256,
470 TLS1_CK_ECDH_ECDSA_WITH_AES_256_SHA384,
471 TLS1_CK_ECDHE_RSA_WITH_AES_128_SHA256,
472 TLS1_CK_ECDHE_RSA_WITH_AES_256_SHA384,
473 TLS1_CK_ECDH_RSA_WITH_AES_128_SHA256,
474 TLS1_CK_ECDH_RSA_WITH_AES_256_SHA384,
475 TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
476 TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
477 TLS1_CK_ECDH_ECDSA_WITH_AES_128_GCM_SHA256,
478 TLS1_CK_ECDH_ECDSA_WITH_AES_256_GCM_SHA384,
479 TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
480 TLS1_CK_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
481 TLS1_CK_ECDH_RSA_WITH_AES_128_GCM_SHA256,
483 length_ = sizeof(ciphers_)/sizeof(ciphers_[0]);
484 width_ = sizeof(ciphers_[0]);
485 qsort(ciphers_, length_, width_, compare_ulong);
488 bool SSLContext::SSLFalseStartChecker::canUseFalseStartWithCipher(
489 const SSL_CIPHER *cipher) {
490 unsigned long cid = cipher->id;
492 (unsigned long*)bsearch(&cid, ciphers_, length_, width_, compare_ulong);
497 SSLContext::SSLFalseStartChecker::compare_ulong(const void *x, const void *y) {
498 if (*(unsigned long *)x < *(unsigned long *)y) {
501 if (*(unsigned long *)x > *(unsigned long *)y) {
507 bool SSLContext::canUseFalseStartWithCipher(const SSL_CIPHER *cipher) {
508 return falseStartChecker_.canUseFalseStartWithCipher(cipher);
512 int SSLContext::selectNextProtocolCallback(
513 SSL* ssl, unsigned char **out, unsigned char *outlen,
514 const unsigned char *server, unsigned int server_len, void *data) {
516 SSLContext* ctx = (SSLContext*)data;
517 if (ctx->advertisedNextProtocols_.size() > 1) {
518 VLOG(3) << "SSLContext::selectNextProcolCallback() "
519 << "client should be deterministic in selecting protocols.";
522 unsigned char *client;
524 if (ctx->advertisedNextProtocols_.empty()) {
525 client = (unsigned char *) "";
528 client = ctx->advertisedNextProtocols_[0].protocols;
529 client_len = ctx->advertisedNextProtocols_[0].length;
532 int retval = SSL_select_next_proto(out, outlen, server, server_len,
534 if (retval != OPENSSL_NPN_NEGOTIATED) {
535 VLOG(3) << "SSLContext::selectNextProcolCallback() "
536 << "unable to pick a next protocol.";
537 #if defined(SSL_MODE_HANDSHAKE_CUTTHROUGH) && \
538 FOLLY_SSLCONTEXT_USE_TLS_FALSE_START
540 const SSL_CIPHER *cipher = ssl->s3->tmp.new_cipher;
541 if (cipher && ctx->canUseFalseStartWithCipher(cipher)) {
542 SSL_set_mode(ssl, SSL_MODE_HANDSHAKE_CUTTHROUGH);
546 return SSL_TLSEXT_ERR_OK;
548 #endif // OPENSSL_NPN_NEGOTIATED
550 SSL* SSLContext::createSSL() const {
551 SSL* ssl = SSL_new(ctx_);
552 if (ssl == nullptr) {
553 throw std::runtime_error("SSL_new: " + getErrors());
559 * Match a name with a pattern. The pattern may include wildcard. A single
560 * wildcard "*" can match up to one component in the domain name.
562 * @param host Host name, typically the name of the remote host
563 * @param pattern Name retrieved from certificate
564 * @param size Size of "pattern"
565 * @return True, if "host" matches "pattern". False otherwise.
567 bool SSLContext::matchName(const char* host, const char* pattern, int size) {
570 while (i < size && host[j] != '\0') {
571 if (toupper(pattern[i]) == toupper(host[j])) {
576 if (pattern[i] == '*') {
577 while (host[j] != '.' && host[j] != '\0') {
585 if (i == size && host[j] == '\0') {
591 int SSLContext::passwordCallback(char* password,
595 SSLContext* context = (SSLContext*)data;
596 if (context == nullptr || context->passwordCollector() == nullptr) {
599 std::string userPassword;
600 // call user defined password collector to get password
601 context->passwordCollector()->getPassword(userPassword, size);
602 int length = userPassword.size();
606 strncpy(password, userPassword.c_str(), length);
612 SSLContext::SSLLockType inLockType = SSLContext::LOCK_MUTEX) :
613 lockType(inLockType) {
617 if (lockType == SSLContext::LOCK_MUTEX) {
619 } else if (lockType == SSLContext::LOCK_SPINLOCK) {
622 // lockType == LOCK_NONE, no-op
626 if (lockType == SSLContext::LOCK_MUTEX) {
628 } else if (lockType == SSLContext::LOCK_SPINLOCK) {
631 // lockType == LOCK_NONE, no-op
634 SSLContext::SSLLockType lockType;
635 folly::SpinLock spinLock{};
639 // Statics are unsafe in environments that call exit().
640 // If one thread calls exit() while another thread is
641 // references a member of SSLContext, bad things can happen.
642 // SSLContext runs in such environments.
643 // Instead of declaring a static member we "new" the static
644 // member so that it won't be destructed on exit().
645 static std::map<int, SSLContext::SSLLockType>* lockTypesInst =
646 new std::map<int, SSLContext::SSLLockType>();
648 static std::unique_ptr<SSLLock[]>* locksInst =
649 new std::unique_ptr<SSLLock[]>();
651 static std::unique_ptr<SSLLock[]>& locks() {
655 static std::map<int, SSLContext::SSLLockType>& lockTypes() {
656 return *lockTypesInst;
659 static void callbackLocking(int mode, int n, const char*, int) {
660 if (mode & CRYPTO_LOCK) {
667 static unsigned long callbackThreadID() {
668 return static_cast<unsigned long>(
670 pthread_mach_thread_np(pthread_self())
677 static CRYPTO_dynlock_value* dyn_create(const char*, int) {
678 return new CRYPTO_dynlock_value;
681 static void dyn_lock(int mode,
682 struct CRYPTO_dynlock_value* lock,
684 if (lock != nullptr) {
685 if (mode & CRYPTO_LOCK) {
688 lock->mutex.unlock();
693 static void dyn_destroy(struct CRYPTO_dynlock_value* lock, const char*, int) {
697 void SSLContext::setSSLLockTypes(std::map<int, SSLLockType> inLockTypes) {
698 lockTypes() = inLockTypes;
701 void SSLContext::initializeOpenSSL() {
702 std::lock_guard<std::mutex> g(mutex_);
703 initializeOpenSSLLocked();
706 void SSLContext::initializeOpenSSLLocked() {
711 SSL_load_error_strings();
712 ERR_load_crypto_strings();
714 locks().reset(new SSLLock[::CRYPTO_num_locks()]);
715 for (auto it: lockTypes()) {
716 locks()[it.first].lockType = it.second;
718 CRYPTO_set_id_callback(callbackThreadID);
719 CRYPTO_set_locking_callback(callbackLocking);
721 CRYPTO_set_dynlock_create_callback(dyn_create);
722 CRYPTO_set_dynlock_lock_callback(dyn_lock);
723 CRYPTO_set_dynlock_destroy_callback(dyn_destroy);
725 #ifdef OPENSSL_NPN_NEGOTIATED
726 sNextProtocolsExDataIndex_ = SSL_get_ex_new_index(0,
727 (void*)"Advertised next protocol index", nullptr, nullptr, nullptr);
732 void SSLContext::cleanupOpenSSL() {
733 std::lock_guard<std::mutex> g(mutex_);
734 cleanupOpenSSLLocked();
737 void SSLContext::cleanupOpenSSLLocked() {
742 CRYPTO_set_id_callback(nullptr);
743 CRYPTO_set_locking_callback(nullptr);
744 CRYPTO_set_dynlock_create_callback(nullptr);
745 CRYPTO_set_dynlock_lock_callback(nullptr);
746 CRYPTO_set_dynlock_destroy_callback(nullptr);
747 CRYPTO_cleanup_all_ex_data();
752 initialized_ = false;
755 void SSLContext::setOptions(long options) {
756 long newOpt = SSL_CTX_set_options(ctx_, options);
757 if ((newOpt & options) != options) {
758 throw std::runtime_error("SSL_CTX_set_options failed");
762 std::string SSLContext::getErrors(int errnoCopy) {
764 unsigned long errorCode;
768 while ((errorCode = ERR_get_error()) != 0) {
769 if (!errors.empty()) {
772 const char* reason = ERR_reason_error_string(errorCode);
773 if (reason == nullptr) {
774 snprintf(message, sizeof(message) - 1, "SSL error # %lu", errorCode);
779 if (errors.empty()) {
780 errors = "error code: " + folly::to<std::string>(errnoCopy);
786 operator<<(std::ostream& os, const PasswordCollector& collector) {
787 os << collector.describe();
791 bool OpenSSLUtils::getPeerAddressFromX509StoreCtx(X509_STORE_CTX* ctx,
792 sockaddr_storage* addrStorage,
793 socklen_t* addrLen) {
794 // Grab the ssl idx and then the ssl object so that we can get the peer
795 // name to compare against the ips in the subjectAltName
796 auto sslIdx = SSL_get_ex_data_X509_STORE_CTX_idx();
798 reinterpret_cast<SSL*>(X509_STORE_CTX_get_ex_data(ctx, sslIdx));
799 int fd = SSL_get_fd(ssl);
801 LOG(ERROR) << "Inexplicably couldn't get fd from SSL";
805 *addrLen = sizeof(*addrStorage);
806 if (getpeername(fd, reinterpret_cast<sockaddr*>(addrStorage), addrLen) != 0) {
807 PLOG(ERROR) << "Unable to get peer name";
810 CHECK(*addrLen <= sizeof(*addrStorage));
814 bool OpenSSLUtils::validatePeerCertNames(X509* cert,
815 const sockaddr* addr,
817 // Try to extract the names within the SAN extension from the certificate
819 reinterpret_cast<STACK_OF(GENERAL_NAME)*>(
820 X509_get_ext_d2i(cert, NID_subject_alt_name, nullptr, nullptr));
822 if (altNames != nullptr) {
823 sk_GENERAL_NAME_pop_free(altNames, GENERAL_NAME_free);
826 if (altNames == nullptr) {
827 LOG(WARNING) << "No subjectAltName provided and we only support ip auth";
831 const sockaddr_in* addr4 = nullptr;
832 const sockaddr_in6* addr6 = nullptr;
833 if (addr != nullptr) {
834 if (addr->sa_family == AF_INET) {
835 addr4 = reinterpret_cast<const sockaddr_in*>(addr);
836 } else if (addr->sa_family == AF_INET6) {
837 addr6 = reinterpret_cast<const sockaddr_in6*>(addr);
839 LOG(FATAL) << "Unsupported sockaddr family: " << addr->sa_family;
844 for (int i = 0; i < sk_GENERAL_NAME_num(altNames); i++) {
845 auto name = sk_GENERAL_NAME_value(altNames, i);
846 if ((addr4 != nullptr || addr6 != nullptr) && name->type == GEN_IPADD) {
847 // Extra const-ness for paranoia
848 unsigned char const * const rawIpStr = name->d.iPAddress->data;
849 int const rawIpLen = name->d.iPAddress->length;
851 if (rawIpLen == 4 && addr4 != nullptr) {
852 if (::memcmp(rawIpStr, &addr4->sin_addr, rawIpLen) == 0) {
855 } else if (rawIpLen == 16 && addr6 != nullptr) {
856 if (::memcmp(rawIpStr, &addr6->sin6_addr, rawIpLen) == 0) {
859 } else if (rawIpLen != 4 && rawIpLen != 16) {
860 LOG(WARNING) << "Unexpected IP length: " << rawIpLen;
865 LOG(WARNING) << "Unable to match client cert against alt name ip";