| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/socket/ssl_server_socket_openssl.h" |
| |
| #include <openssl/err.h> |
| #include <openssl/ssl.h> |
| |
| #include "base/callback_helpers.h" |
| #include "base/logging.h" |
| #include "base/strings/string_util.h" |
| #include "crypto/openssl_util.h" |
| #include "crypto/rsa_private_key.h" |
| #include "crypto/scoped_openssl_types.h" |
| #include "net/base/net_errors.h" |
| #include "net/ssl/openssl_ssl_util.h" |
| #include "net/ssl/scoped_openssl_types.h" |
| |
| #define GotoState(s) next_handshake_state_ = s |
| |
| namespace net { |
| |
| void EnableSSLServerSockets() { |
| // No-op because CreateSSLServerSocket() calls crypto::EnsureOpenSSLInit(). |
| } |
| |
| scoped_ptr<SSLServerSocket> CreateSSLServerSocket( |
| scoped_ptr<StreamSocket> socket, |
| X509Certificate* certificate, |
| crypto::RSAPrivateKey* key, |
| const SSLServerConfig& ssl_config) { |
| crypto::EnsureOpenSSLInit(); |
| return scoped_ptr<SSLServerSocket>( |
| new SSLServerSocketOpenSSL(socket.Pass(), certificate, key, ssl_config)); |
| } |
| |
| SSLServerSocketOpenSSL::SSLServerSocketOpenSSL( |
| scoped_ptr<StreamSocket> transport_socket, |
| scoped_refptr<X509Certificate> certificate, |
| crypto::RSAPrivateKey* key, |
| const SSLServerConfig& ssl_config) |
| : transport_send_busy_(false), |
| transport_recv_busy_(false), |
| transport_recv_eof_(false), |
| user_read_buf_len_(0), |
| user_write_buf_len_(0), |
| transport_write_error_(OK), |
| ssl_(NULL), |
| transport_bio_(NULL), |
| transport_socket_(transport_socket.Pass()), |
| ssl_config_(ssl_config), |
| cert_(certificate), |
| next_handshake_state_(STATE_NONE), |
| completed_handshake_(false) { |
| // TODO(byungchul): Need a better way to clone a key. |
| std::vector<uint8> key_bytes; |
| CHECK(key->ExportPrivateKey(&key_bytes)); |
| key_.reset(crypto::RSAPrivateKey::CreateFromPrivateKeyInfo(key_bytes)); |
| CHECK(key_.get()); |
| } |
| |
| SSLServerSocketOpenSSL::~SSLServerSocketOpenSSL() { |
| if (ssl_) { |
| // Calling SSL_shutdown prevents the session from being marked as |
| // unresumable. |
| SSL_shutdown(ssl_); |
| SSL_free(ssl_); |
| ssl_ = NULL; |
| } |
| if (transport_bio_) { |
| BIO_free_all(transport_bio_); |
| transport_bio_ = NULL; |
| } |
| } |
| |
| int SSLServerSocketOpenSSL::Handshake(const CompletionCallback& callback) { |
| net_log_.BeginEvent(NetLog::TYPE_SSL_SERVER_HANDSHAKE); |
| |
| // Set up new ssl object. |
| int rv = Init(); |
| if (rv != OK) { |
| LOG(ERROR) << "Failed to initialize OpenSSL: rv=" << rv; |
| net_log_.EndEventWithNetErrorCode(NetLog::TYPE_SSL_SERVER_HANDSHAKE, rv); |
| return rv; |
| } |
| |
| // Set SSL to server mode. Handshake happens in the loop below. |
| SSL_set_accept_state(ssl_); |
| |
| GotoState(STATE_HANDSHAKE); |
| rv = DoHandshakeLoop(OK); |
| if (rv == ERR_IO_PENDING) { |
| user_handshake_callback_ = callback; |
| } else { |
| net_log_.EndEventWithNetErrorCode(NetLog::TYPE_SSL_SERVER_HANDSHAKE, rv); |
| } |
| |
| return rv > OK ? OK : rv; |
| } |
| |
| int SSLServerSocketOpenSSL::ExportKeyingMaterial( |
| const base::StringPiece& label, |
| bool has_context, |
| const base::StringPiece& context, |
| unsigned char* out, |
| unsigned int outlen) { |
| if (!IsConnected()) |
| return ERR_SOCKET_NOT_CONNECTED; |
| |
| crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE); |
| |
| int rv = SSL_export_keying_material( |
| ssl_, out, outlen, label.data(), label.size(), |
| reinterpret_cast<const unsigned char*>(context.data()), |
| context.length(), context.length() > 0); |
| |
| if (rv != 1) { |
| int ssl_error = SSL_get_error(ssl_, rv); |
| LOG(ERROR) << "Failed to export keying material;" |
| << " returned " << rv |
| << ", SSL error code " << ssl_error; |
| return MapOpenSSLError(ssl_error, err_tracer); |
| } |
| return OK; |
| } |
| |
| int SSLServerSocketOpenSSL::GetTLSUniqueChannelBinding(std::string* out) { |
| NOTIMPLEMENTED(); |
| return ERR_NOT_IMPLEMENTED; |
| } |
| |
| int SSLServerSocketOpenSSL::Read(IOBuffer* buf, int buf_len, |
| const CompletionCallback& callback) { |
| DCHECK(user_read_callback_.is_null()); |
| DCHECK(user_handshake_callback_.is_null()); |
| DCHECK(!user_read_buf_.get()); |
| DCHECK(!callback.is_null()); |
| |
| user_read_buf_ = buf; |
| user_read_buf_len_ = buf_len; |
| |
| DCHECK(completed_handshake_); |
| |
| int rv = DoReadLoop(OK); |
| |
| if (rv == ERR_IO_PENDING) { |
| user_read_callback_ = callback; |
| } else { |
| user_read_buf_ = NULL; |
| user_read_buf_len_ = 0; |
| } |
| |
| return rv; |
| } |
| |
| int SSLServerSocketOpenSSL::Write(IOBuffer* buf, int buf_len, |
| const CompletionCallback& callback) { |
| DCHECK(user_write_callback_.is_null()); |
| DCHECK(!user_write_buf_.get()); |
| DCHECK(!callback.is_null()); |
| |
| user_write_buf_ = buf; |
| user_write_buf_len_ = buf_len; |
| |
| int rv = DoWriteLoop(OK); |
| |
| if (rv == ERR_IO_PENDING) { |
| user_write_callback_ = callback; |
| } else { |
| user_write_buf_ = NULL; |
| user_write_buf_len_ = 0; |
| } |
| return rv; |
| } |
| |
| int SSLServerSocketOpenSSL::SetReceiveBufferSize(int32 size) { |
| return transport_socket_->SetReceiveBufferSize(size); |
| } |
| |
| int SSLServerSocketOpenSSL::SetSendBufferSize(int32 size) { |
| return transport_socket_->SetSendBufferSize(size); |
| } |
| |
| int SSLServerSocketOpenSSL::Connect(const CompletionCallback& callback) { |
| NOTIMPLEMENTED(); |
| return ERR_NOT_IMPLEMENTED; |
| } |
| |
| void SSLServerSocketOpenSSL::Disconnect() { |
| transport_socket_->Disconnect(); |
| } |
| |
| bool SSLServerSocketOpenSSL::IsConnected() const { |
| // TODO(wtc): Find out if we should check transport_socket_->IsConnected() |
| // as well. |
| return completed_handshake_; |
| } |
| |
| bool SSLServerSocketOpenSSL::IsConnectedAndIdle() const { |
| return completed_handshake_ && transport_socket_->IsConnectedAndIdle(); |
| } |
| |
| int SSLServerSocketOpenSSL::GetPeerAddress(IPEndPoint* address) const { |
| if (!IsConnected()) |
| return ERR_SOCKET_NOT_CONNECTED; |
| return transport_socket_->GetPeerAddress(address); |
| } |
| |
| int SSLServerSocketOpenSSL::GetLocalAddress(IPEndPoint* address) const { |
| if (!IsConnected()) |
| return ERR_SOCKET_NOT_CONNECTED; |
| return transport_socket_->GetLocalAddress(address); |
| } |
| |
| const BoundNetLog& SSLServerSocketOpenSSL::NetLog() const { |
| return net_log_; |
| } |
| |
| void SSLServerSocketOpenSSL::SetSubresourceSpeculation() { |
| transport_socket_->SetSubresourceSpeculation(); |
| } |
| |
| void SSLServerSocketOpenSSL::SetOmniboxSpeculation() { |
| transport_socket_->SetOmniboxSpeculation(); |
| } |
| |
| bool SSLServerSocketOpenSSL::WasEverUsed() const { |
| return transport_socket_->WasEverUsed(); |
| } |
| |
| bool SSLServerSocketOpenSSL::UsingTCPFastOpen() const { |
| return transport_socket_->UsingTCPFastOpen(); |
| } |
| |
| bool SSLServerSocketOpenSSL::WasNpnNegotiated() const { |
| NOTIMPLEMENTED(); |
| return false; |
| } |
| |
| NextProto SSLServerSocketOpenSSL::GetNegotiatedProtocol() const { |
| // NPN is not supported by this class. |
| return kProtoUnknown; |
| } |
| |
| bool SSLServerSocketOpenSSL::GetSSLInfo(SSLInfo* ssl_info) { |
| NOTIMPLEMENTED(); |
| return false; |
| } |
| |
| void SSLServerSocketOpenSSL::GetConnectionAttempts( |
| ConnectionAttempts* out) const { |
| out->clear(); |
| } |
| |
| int64_t SSLServerSocketOpenSSL::GetTotalReceivedBytes() const { |
| return transport_socket_->GetTotalReceivedBytes(); |
| } |
| |
| void SSLServerSocketOpenSSL::OnSendComplete(int result) { |
| if (next_handshake_state_ == STATE_HANDSHAKE) { |
| // In handshake phase. |
| OnHandshakeIOComplete(result); |
| return; |
| } |
| |
| // TODO(byungchul): This state machine is not correct. Copy the state machine |
| // of SSLClientSocketOpenSSL::OnSendComplete() which handles it better. |
| if (!completed_handshake_) |
| return; |
| |
| if (user_write_buf_.get()) { |
| int rv = DoWriteLoop(result); |
| if (rv != ERR_IO_PENDING) |
| DoWriteCallback(rv); |
| } else { |
| // Ensure that any queued ciphertext is flushed. |
| DoTransportIO(); |
| } |
| } |
| |
| void SSLServerSocketOpenSSL::OnRecvComplete(int result) { |
| if (next_handshake_state_ == STATE_HANDSHAKE) { |
| // In handshake phase. |
| OnHandshakeIOComplete(result); |
| return; |
| } |
| |
| // Network layer received some data, check if client requested to read |
| // decrypted data. |
| if (!user_read_buf_.get() || !completed_handshake_) |
| return; |
| |
| int rv = DoReadLoop(result); |
| if (rv != ERR_IO_PENDING) |
| DoReadCallback(rv); |
| } |
| |
| void SSLServerSocketOpenSSL::OnHandshakeIOComplete(int result) { |
| int rv = DoHandshakeLoop(result); |
| if (rv == ERR_IO_PENDING) |
| return; |
| |
| net_log_.EndEventWithNetErrorCode(NetLog::TYPE_SSL_SERVER_HANDSHAKE, rv); |
| if (!user_handshake_callback_.is_null()) |
| DoHandshakeCallback(rv); |
| } |
| |
| // Return 0 for EOF, |
| // > 0 for bytes transferred immediately, |
| // < 0 for error (or the non-error ERR_IO_PENDING). |
| int SSLServerSocketOpenSSL::BufferSend() { |
| if (transport_send_busy_) |
| return ERR_IO_PENDING; |
| |
| if (!send_buffer_.get()) { |
| // Get a fresh send buffer out of the send BIO. |
| size_t max_read = BIO_pending(transport_bio_); |
| if (!max_read) |
| return 0; // Nothing pending in the OpenSSL write BIO. |
| send_buffer_ = new DrainableIOBuffer(new IOBuffer(max_read), max_read); |
| int read_bytes = BIO_read(transport_bio_, send_buffer_->data(), max_read); |
| DCHECK_GT(read_bytes, 0); |
| CHECK_EQ(static_cast<int>(max_read), read_bytes); |
| } |
| |
| int rv = transport_socket_->Write( |
| send_buffer_.get(), |
| send_buffer_->BytesRemaining(), |
| base::Bind(&SSLServerSocketOpenSSL::BufferSendComplete, |
| base::Unretained(this))); |
| if (rv == ERR_IO_PENDING) { |
| transport_send_busy_ = true; |
| } else { |
| TransportWriteComplete(rv); |
| } |
| return rv; |
| } |
| |
| void SSLServerSocketOpenSSL::BufferSendComplete(int result) { |
| transport_send_busy_ = false; |
| TransportWriteComplete(result); |
| OnSendComplete(result); |
| } |
| |
| void SSLServerSocketOpenSSL::TransportWriteComplete(int result) { |
| DCHECK(ERR_IO_PENDING != result); |
| if (result < 0) { |
| // Got a socket write error; close the BIO to indicate this upward. |
| // |
| // TODO(davidben): The value of |result| gets lost. Feed the error back into |
| // the BIO so it gets (re-)detected in OnSendComplete. Perhaps with |
| // BIO_set_callback. |
| DVLOG(1) << "TransportWriteComplete error " << result; |
| (void)BIO_shutdown_wr(SSL_get_wbio(ssl_)); |
| |
| // Match the fix for http://crbug.com/249848 in NSS by erroring future reads |
| // from the socket after a write error. |
| // |
| // TODO(davidben): Avoid having read and write ends interact this way. |
| transport_write_error_ = result; |
| (void)BIO_shutdown_wr(transport_bio_); |
| send_buffer_ = NULL; |
| } else { |
| DCHECK(send_buffer_.get()); |
| send_buffer_->DidConsume(result); |
| DCHECK_GE(send_buffer_->BytesRemaining(), 0); |
| if (send_buffer_->BytesRemaining() <= 0) |
| send_buffer_ = NULL; |
| } |
| } |
| |
| int SSLServerSocketOpenSSL::BufferRecv() { |
| if (transport_recv_busy_) |
| return ERR_IO_PENDING; |
| |
| // Determine how much was requested from |transport_bio_| that was not |
| // actually available. |
| size_t requested = BIO_ctrl_get_read_request(transport_bio_); |
| if (requested == 0) { |
| // This is not a perfect match of error codes, as no operation is |
| // actually pending. However, returning 0 would be interpreted as |
| // a possible sign of EOF, which is also an inappropriate match. |
| return ERR_IO_PENDING; |
| } |
| |
| // Known Issue: While only reading |requested| data is the more correct |
| // implementation, it has the downside of resulting in frequent reads: |
| // One read for the SSL record header (~5 bytes) and one read for the SSL |
| // record body. Rather than issuing these reads to the underlying socket |
| // (and constantly allocating new IOBuffers), a single Read() request to |
| // fill |transport_bio_| is issued. As long as an SSL client socket cannot |
| // be gracefully shutdown (via SSL close alerts) and re-used for non-SSL |
| // traffic, this over-subscribed Read()ing will not cause issues. |
| size_t max_write = BIO_ctrl_get_write_guarantee(transport_bio_); |
| if (!max_write) |
| return ERR_IO_PENDING; |
| |
| recv_buffer_ = new IOBuffer(max_write); |
| int rv = transport_socket_->Read( |
| recv_buffer_.get(), |
| max_write, |
| base::Bind(&SSLServerSocketOpenSSL::BufferRecvComplete, |
| base::Unretained(this))); |
| if (rv == ERR_IO_PENDING) { |
| transport_recv_busy_ = true; |
| } else { |
| rv = TransportReadComplete(rv); |
| } |
| return rv; |
| } |
| |
| void SSLServerSocketOpenSSL::BufferRecvComplete(int result) { |
| result = TransportReadComplete(result); |
| OnRecvComplete(result); |
| } |
| |
| int SSLServerSocketOpenSSL::TransportReadComplete(int result) { |
| DCHECK(ERR_IO_PENDING != result); |
| if (result <= 0) { |
| DVLOG(1) << "TransportReadComplete result " << result; |
| // Received 0 (end of file) or an error. Either way, bubble it up to the |
| // SSL layer via the BIO. TODO(joth): consider stashing the error code, to |
| // relay up to the SSL socket client (i.e. via DoReadCallback). |
| if (result == 0) |
| transport_recv_eof_ = true; |
| (void)BIO_shutdown_wr(transport_bio_); |
| } else if (transport_write_error_ < 0) { |
| // Mirror transport write errors as read failures; transport_bio_ has been |
| // shut down by TransportWriteComplete, so the BIO_write will fail, failing |
| // the CHECK. http://crbug.com/335557. |
| result = transport_write_error_; |
| } else { |
| DCHECK(recv_buffer_.get()); |
| int ret = BIO_write(transport_bio_, recv_buffer_->data(), result); |
| // A write into a memory BIO should always succeed. |
| DCHECK_EQ(result, ret); |
| } |
| recv_buffer_ = NULL; |
| transport_recv_busy_ = false; |
| return result; |
| } |
| |
| // Do as much network I/O as possible between the buffer and the |
| // transport socket. Return true if some I/O performed, false |
| // otherwise (error or ERR_IO_PENDING). |
| bool SSLServerSocketOpenSSL::DoTransportIO() { |
| bool network_moved = false; |
| int rv; |
| // Read and write as much data as possible. The loop is necessary because |
| // Write() may return synchronously. |
| do { |
| rv = BufferSend(); |
| if (rv != ERR_IO_PENDING && rv != 0) |
| network_moved = true; |
| } while (rv > 0); |
| if (!transport_recv_eof_ && BufferRecv() != ERR_IO_PENDING) |
| network_moved = true; |
| return network_moved; |
| } |
| |
| int SSLServerSocketOpenSSL::DoPayloadRead() { |
| DCHECK(user_read_buf_.get()); |
| DCHECK_GT(user_read_buf_len_, 0); |
| crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE); |
| int rv = SSL_read(ssl_, user_read_buf_->data(), user_read_buf_len_); |
| if (rv >= 0) |
| return rv; |
| int ssl_error = SSL_get_error(ssl_, rv); |
| OpenSSLErrorInfo error_info; |
| int net_error = MapOpenSSLErrorWithDetails(ssl_error, err_tracer, |
| &error_info); |
| if (net_error != ERR_IO_PENDING) { |
| net_log_.AddEvent( |
| NetLog::TYPE_SSL_READ_ERROR, |
| CreateNetLogOpenSSLErrorCallback(net_error, ssl_error, error_info)); |
| } |
| return net_error; |
| } |
| |
| int SSLServerSocketOpenSSL::DoPayloadWrite() { |
| DCHECK(user_write_buf_.get()); |
| crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE); |
| int rv = SSL_write(ssl_, user_write_buf_->data(), user_write_buf_len_); |
| if (rv >= 0) |
| return rv; |
| int ssl_error = SSL_get_error(ssl_, rv); |
| OpenSSLErrorInfo error_info; |
| int net_error = MapOpenSSLErrorWithDetails(ssl_error, err_tracer, |
| &error_info); |
| if (net_error != ERR_IO_PENDING) { |
| net_log_.AddEvent( |
| NetLog::TYPE_SSL_WRITE_ERROR, |
| CreateNetLogOpenSSLErrorCallback(net_error, ssl_error, error_info)); |
| } |
| return net_error; |
| } |
| |
| int SSLServerSocketOpenSSL::DoHandshakeLoop(int last_io_result) { |
| int rv = last_io_result; |
| do { |
| // Default to STATE_NONE for next state. |
| // (This is a quirk carried over from the windows |
| // implementation. It makes reading the logs a bit harder.) |
| // State handlers can and often do call GotoState just |
| // to stay in the current state. |
| State state = next_handshake_state_; |
| GotoState(STATE_NONE); |
| switch (state) { |
| case STATE_HANDSHAKE: |
| rv = DoHandshake(); |
| break; |
| case STATE_NONE: |
| default: |
| rv = ERR_UNEXPECTED; |
| LOG(DFATAL) << "unexpected state " << state; |
| break; |
| } |
| |
| // Do the actual network I/O |
| bool network_moved = DoTransportIO(); |
| if (network_moved && next_handshake_state_ == STATE_HANDSHAKE) { |
| // In general we exit the loop if rv is ERR_IO_PENDING. In this |
| // special case we keep looping even if rv is ERR_IO_PENDING because |
| // the transport IO may allow DoHandshake to make progress. |
| rv = OK; // This causes us to stay in the loop. |
| } |
| } while (rv != ERR_IO_PENDING && next_handshake_state_ != STATE_NONE); |
| return rv; |
| } |
| |
| int SSLServerSocketOpenSSL::DoReadLoop(int result) { |
| DCHECK(completed_handshake_); |
| DCHECK(next_handshake_state_ == STATE_NONE); |
| |
| if (result < 0) |
| return result; |
| |
| bool network_moved; |
| int rv; |
| do { |
| rv = DoPayloadRead(); |
| network_moved = DoTransportIO(); |
| } while (rv == ERR_IO_PENDING && network_moved); |
| return rv; |
| } |
| |
| int SSLServerSocketOpenSSL::DoWriteLoop(int result) { |
| DCHECK(completed_handshake_); |
| DCHECK_EQ(next_handshake_state_, STATE_NONE); |
| |
| if (result < 0) |
| return result; |
| |
| bool network_moved; |
| int rv; |
| do { |
| rv = DoPayloadWrite(); |
| network_moved = DoTransportIO(); |
| } while (rv == ERR_IO_PENDING && network_moved); |
| return rv; |
| } |
| |
| int SSLServerSocketOpenSSL::DoHandshake() { |
| crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE); |
| int net_error = OK; |
| int rv = SSL_do_handshake(ssl_); |
| |
| if (rv == 1) { |
| completed_handshake_ = true; |
| } else { |
| int ssl_error = SSL_get_error(ssl_, rv); |
| OpenSSLErrorInfo error_info; |
| net_error = MapOpenSSLErrorWithDetails(ssl_error, err_tracer, &error_info); |
| |
| // If not done, stay in this state |
| if (net_error == ERR_IO_PENDING) { |
| GotoState(STATE_HANDSHAKE); |
| } else { |
| LOG(ERROR) << "handshake failed; returned " << rv |
| << ", SSL error code " << ssl_error |
| << ", net_error " << net_error; |
| net_log_.AddEvent( |
| NetLog::TYPE_SSL_HANDSHAKE_ERROR, |
| CreateNetLogOpenSSLErrorCallback(net_error, ssl_error, error_info)); |
| } |
| } |
| return net_error; |
| } |
| |
| void SSLServerSocketOpenSSL::DoHandshakeCallback(int rv) { |
| DCHECK_NE(rv, ERR_IO_PENDING); |
| ResetAndReturn(&user_handshake_callback_).Run(rv > OK ? OK : rv); |
| } |
| |
| void SSLServerSocketOpenSSL::DoReadCallback(int rv) { |
| DCHECK(rv != ERR_IO_PENDING); |
| DCHECK(!user_read_callback_.is_null()); |
| |
| user_read_buf_ = NULL; |
| user_read_buf_len_ = 0; |
| ResetAndReturn(&user_read_callback_).Run(rv); |
| } |
| |
| void SSLServerSocketOpenSSL::DoWriteCallback(int rv) { |
| DCHECK(rv != ERR_IO_PENDING); |
| DCHECK(!user_write_callback_.is_null()); |
| |
| user_write_buf_ = NULL; |
| user_write_buf_len_ = 0; |
| ResetAndReturn(&user_write_callback_).Run(rv); |
| } |
| |
| int SSLServerSocketOpenSSL::Init() { |
| DCHECK(!ssl_); |
| DCHECK(!transport_bio_); |
| |
| crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE); |
| |
| ScopedSSL_CTX ssl_ctx(SSL_CTX_new(SSLv23_server_method())); |
| |
| if (ssl_config_.require_client_cert) |
| SSL_CTX_set_verify(ssl_ctx.get(), SSL_VERIFY_PEER, NULL); |
| |
| ssl_ = SSL_new(ssl_ctx.get()); |
| if (!ssl_) |
| return ERR_UNEXPECTED; |
| |
| BIO* ssl_bio = NULL; |
| // 0 => use default buffer sizes. |
| if (!BIO_new_bio_pair(&ssl_bio, 0, &transport_bio_, 0)) |
| return ERR_UNEXPECTED; |
| DCHECK(ssl_bio); |
| DCHECK(transport_bio_); |
| |
| SSL_set_bio(ssl_, ssl_bio, ssl_bio); |
| |
| // Set certificate and private key. |
| DCHECK(cert_->os_cert_handle()); |
| #if defined(USE_OPENSSL_CERTS) |
| if (SSL_use_certificate(ssl_, cert_->os_cert_handle()) != 1) { |
| LOG(ERROR) << "Cannot set certificate."; |
| return ERR_UNEXPECTED; |
| } |
| #else |
| // Convert OSCertHandle to X509 structure. |
| std::string der_string; |
| if (!X509Certificate::GetDEREncoded(cert_->os_cert_handle(), &der_string)) |
| return ERR_UNEXPECTED; |
| |
| const unsigned char* der_string_array = |
| reinterpret_cast<const unsigned char*>(der_string.data()); |
| |
| ScopedX509 x509(d2i_X509(NULL, &der_string_array, der_string.length())); |
| if (!x509.get()) |
| return ERR_UNEXPECTED; |
| |
| // On success, SSL_use_certificate acquires a reference to |x509|. |
| if (SSL_use_certificate(ssl_, x509.get()) != 1) { |
| LOG(ERROR) << "Cannot set certificate."; |
| return ERR_UNEXPECTED; |
| } |
| #endif // USE_OPENSSL_CERTS |
| |
| DCHECK(key_->key()); |
| if (SSL_use_PrivateKey(ssl_, key_->key()) != 1) { |
| LOG(ERROR) << "Cannot set private key."; |
| return ERR_UNEXPECTED; |
| } |
| |
| DCHECK_LT(SSL3_VERSION, ssl_config_.version_min); |
| DCHECK_LT(SSL3_VERSION, ssl_config_.version_max); |
| SSL_set_min_version(ssl_, ssl_config_.version_min); |
| SSL_set_max_version(ssl_, ssl_config_.version_max); |
| |
| // OpenSSL defaults some options to on, others to off. To avoid ambiguity, |
| // set everything we care about to an absolute value. |
| SslSetClearMask options; |
| options.ConfigureFlag(SSL_OP_NO_COMPRESSION, true); |
| |
| SSL_set_options(ssl_, options.set_mask); |
| SSL_clear_options(ssl_, options.clear_mask); |
| |
| // Same as above, this time for the SSL mode. |
| SslSetClearMask mode; |
| |
| mode.ConfigureFlag(SSL_MODE_RELEASE_BUFFERS, true); |
| |
| SSL_set_mode(ssl_, mode.set_mask); |
| SSL_clear_mode(ssl_, mode.clear_mask); |
| |
| // See SSLServerConfig::disabled_cipher_suites for description of the suites |
| // disabled by default. Note that !SHA256 and !SHA384 only remove HMAC-SHA256 |
| // and HMAC-SHA384 cipher suites, not GCM cipher suites with SHA256 or SHA384 |
| // as the handshake hash. |
| std::string command("DEFAULT:!SHA256:!SHA384:!AESGCM+AES256:!aPSK"); |
| |
| if (ssl_config_.require_ecdhe) |
| command.append(":!kRSA:!kDHE"); |
| |
| // Remove any disabled ciphers. |
| for (uint16_t id : ssl_config_.disabled_cipher_suites) { |
| const SSL_CIPHER* cipher = SSL_get_cipher_by_value(id); |
| if (cipher) { |
| command.append(":!"); |
| command.append(SSL_CIPHER_get_name(cipher)); |
| } |
| } |
| |
| int rv = SSL_set_cipher_list(ssl_, command.c_str()); |
| // If this fails (rv = 0) it means there are no ciphers enabled on this SSL. |
| // This will almost certainly result in the socket failing to complete the |
| // handshake at which point the appropriate error is bubbled up to the client. |
| LOG_IF(WARNING, rv != 1) << "SSL_set_cipher_list('" << command |
| << "') returned " << rv; |
| |
| return OK; |
| } |
| |
| } // namespace net |