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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "crypto/openssl_util.h" | 5 #include "crypto/openssl_util.h" |
| 6 | 6 |
| 7 #include <openssl/err.h> | 7 #include <openssl/err.h> |
| 8 #include <openssl/ssl.h> | 8 #include <openssl/ssl.h> |
| 9 | 9 |
| 10 #include "base/logging.h" | 10 #include "base/logging.h" |
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| 27 static OpenSSLInitSingleton* GetInstance() { | 27 static OpenSSLInitSingleton* GetInstance() { |
| 28 // We allow the SSL environment to leak for multiple reasons: | 28 // We allow the SSL environment to leak for multiple reasons: |
| 29 // - it is used from a non-joinable worker thread that is not stopped on | 29 // - it is used from a non-joinable worker thread that is not stopped on |
| 30 // shutdown, hence may still be using OpenSSL library after the AtExit | 30 // shutdown, hence may still be using OpenSSL library after the AtExit |
| 31 // runner has completed. | 31 // runner has completed. |
| 32 // - There are other OpenSSL related singletons (e.g. the client socket | 32 // - There are other OpenSSL related singletons (e.g. the client socket |
| 33 // context) who's cleanup depends on the global environment here, but | 33 // context) who's cleanup depends on the global environment here, but |
| 34 // we can't control the order the AtExit handlers will run in so | 34 // we can't control the order the AtExit handlers will run in so |
| 35 // allowing the global environment to leak at least ensures it is | 35 // allowing the global environment to leak at least ensures it is |
| 36 // available for those other singletons to reliably cleanup. | 36 // available for those other singletons to reliably cleanup. |
| 37 return base::Singleton<OpenSSLInitSingleton, | 37 return Singleton<OpenSSLInitSingleton, |
| 38 base::LeakySingletonTraits<OpenSSLInitSingleton> >::get(); | 38 LeakySingletonTraits<OpenSSLInitSingleton> >::get(); |
| 39 } | 39 } |
| 40 private: | 40 private: |
| 41 friend struct DefaultSingletonTraits<OpenSSLInitSingleton>; | 41 friend struct DefaultSingletonTraits<OpenSSLInitSingleton>; |
| 42 OpenSSLInitSingleton() { | 42 OpenSSLInitSingleton() { |
| 43 SSL_load_error_strings(); | 43 SSL_load_error_strings(); |
| 44 SSL_library_init(); | 44 SSL_library_init(); |
| 45 OpenSSL_add_all_algorithms(); | 45 OpenSSL_add_all_algorithms(); |
| 46 int num_locks = CRYPTO_num_locks(); | 46 int num_locks = CRYPTO_num_locks(); |
| 47 locks_.reserve(num_locks); | 47 locks_.reserve(num_locks); |
| 48 for (int i = 0; i < num_locks; ++i) | 48 for (int i = 0; i < num_locks; ++i) |
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| 78 // Callback routine for OpenSSL to print error messages. |str| is a | 78 // Callback routine for OpenSSL to print error messages. |str| is a |
| 79 // NULL-terminated string of length |len| containing diagnostic information | 79 // NULL-terminated string of length |len| containing diagnostic information |
| 80 // such as the library, function and reason for the error, the file and line | 80 // such as the library, function and reason for the error, the file and line |
| 81 // where the error originated, plus potentially any context-specific | 81 // where the error originated, plus potentially any context-specific |
| 82 // information about the error. |context| contains a pointer to user-supplied | 82 // information about the error. |context| contains a pointer to user-supplied |
| 83 // data, which is currently unused. | 83 // data, which is currently unused. |
| 84 // If this callback returns a value <= 0, OpenSSL will stop processing the | 84 // If this callback returns a value <= 0, OpenSSL will stop processing the |
| 85 // error queue and return, otherwise it will continue calling this function | 85 // error queue and return, otherwise it will continue calling this function |
| 86 // until all errors have been removed from the queue. | 86 // until all errors have been removed from the queue. |
| 87 int OpenSSLErrorCallback(const char* str, size_t len, void* context) { | 87 int OpenSSLErrorCallback(const char* str, size_t len, void* context) { |
| 88 DVLOG(1) << "\t" << StringPiece(str, len); | 88 DVLOG(1) << "\t" << base::StringPiece(str, len); |
| 89 return 1; | 89 return 1; |
| 90 } | 90 } |
| 91 | 91 |
| 92 } // namespace | 92 } // namespace |
| 93 | 93 |
| 94 void EnsureOpenSSLInit() { | 94 void EnsureOpenSSLInit() { |
| 95 (void)OpenSSLInitSingleton::GetInstance(); | 95 (void)OpenSSLInitSingleton::GetInstance(); |
| 96 } | 96 } |
| 97 | 97 |
| 98 void ClearOpenSSLERRStack(const tracked_objects::Location& location) { | 98 void ClearOpenSSLERRStack(const tracked_objects::Location& location) { |
| 99 if (logging::DEBUG_MODE && VLOG_IS_ON(1)) { | 99 if (logging::DEBUG_MODE && VLOG_IS_ON(1)) { |
| 100 int error_num = ERR_peek_error(); | 100 int error_num = ERR_peek_error(); |
| 101 if (error_num == 0) | 101 if (error_num == 0) |
| 102 return; | 102 return; |
| 103 | 103 |
| 104 std::string message; | 104 std::string message; |
| 105 location.Write(true, true, &message); | 105 location.Write(true, true, &message); |
| 106 DVLOG(1) << "OpenSSL ERR_get_error stack from " << message; | 106 DVLOG(1) << "OpenSSL ERR_get_error stack from " << message; |
| 107 ERR_print_errors_cb(&OpenSSLErrorCallback, NULL); | 107 ERR_print_errors_cb(&OpenSSLErrorCallback, NULL); |
| 108 } else { | 108 } else { |
| 109 ERR_clear_error(); | 109 ERR_clear_error(); |
| 110 } | 110 } |
| 111 } | 111 } |
| 112 | 112 |
| 113 } // namespace crypto | 113 } // namespace crypto |
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