Implement SSL server socket over OpenSSL.

net/socket/openssl_util.cc

Index: net/socket/openssl_util.cc
diff --git a/net/socket/openssl_util.cc b/net/socket/openssl_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3e2bc8fbb9efb89693163c9fd8e0618e0504a269
--- /dev/null
+++ b/net/socket/openssl_util.cc
@@ -0,0 +1,160 @@
+// Copyright (c) 2014 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/openssl_util.h"
+
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+
+#include "base/logging.h"
+#include "crypto/openssl_util.h"
+#include "net/base/net_errors.h"
+
+namespace net {
+
+namespace {
+
+int MapOpenSSLErrorSSL() {
+  // Walk down the error stack to find the SSLerr generated reason.
+  unsigned long error_code;
+  do {
+    error_code = ERR_get_error();
+    if (error_code == 0)
+      return ERR_SSL_PROTOCOL_ERROR;
+  } while (ERR_GET_LIB(error_code) != ERR_LIB_SSL);
+
+  DVLOG(1) << "OpenSSL SSL error, reason: " << ERR_GET_REASON(error_code)
+           << ", name: " << ERR_error_string(error_code, NULL);
+  switch (ERR_GET_REASON(error_code)) {
+    case SSL_R_READ_TIMEOUT_EXPIRED:
+      return ERR_TIMED_OUT;
+    case SSL_R_BAD_RESPONSE_ARGUMENT:
+      return ERR_INVALID_ARGUMENT;
+    case SSL_R_UNKNOWN_CERTIFICATE_TYPE:
+    case SSL_R_UNKNOWN_CIPHER_TYPE:
+    case SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE:
+    case SSL_R_UNKNOWN_PKEY_TYPE:
+    case SSL_R_UNKNOWN_REMOTE_ERROR_TYPE:
+    case SSL_R_UNKNOWN_SSL_VERSION:
+      return ERR_NOT_IMPLEMENTED;
+    case SSL_R_UNSUPPORTED_SSL_VERSION:
+    case SSL_R_NO_CIPHER_MATCH:
+    case SSL_R_NO_SHARED_CIPHER:
+    case SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY:
+    case SSL_R_TLSV1_ALERT_PROTOCOL_VERSION:
+    case SSL_R_UNSUPPORTED_PROTOCOL:
+      return ERR_SSL_VERSION_OR_CIPHER_MISMATCH;
+    case SSL_R_SSLV3_ALERT_BAD_CERTIFICATE:
+    case SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE:
+    case SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED:
+    case SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED:
+    case SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN:
+    case SSL_R_TLSV1_ALERT_ACCESS_DENIED:
+    case SSL_R_TLSV1_ALERT_UNKNOWN_CA:
+      return ERR_BAD_SSL_CLIENT_AUTH_CERT;
+    case SSL_R_BAD_DECOMPRESSION:
+    case SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE:
+      return ERR_SSL_DECOMPRESSION_FAILURE_ALERT;
+    case SSL_R_SSLV3_ALERT_BAD_RECORD_MAC:
+      return ERR_SSL_BAD_RECORD_MAC_ALERT;
+    case SSL_R_TLSV1_ALERT_DECRYPT_ERROR:
+      return ERR_SSL_DECRYPT_ERROR_ALERT;
+    case SSL_R_TLSV1_UNRECOGNIZED_NAME:
+      return ERR_SSL_UNRECOGNIZED_NAME_ALERT;
+    case SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED:
+      return ERR_SSL_UNSAFE_NEGOTIATION;
+    case SSL_R_WRONG_NUMBER_OF_KEY_BITS:
+      return ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY;
+    // SSL_R_UNKNOWN_PROTOCOL is reported if premature application data is
+    // received (see http://crbug.com/42538), and also if all the protocol
+    // versions supported by the server were disabled in this socket instance.
+    // Mapped to ERR_SSL_PROTOCOL_ERROR for compatibility with other SSL sockets
+    // in the former scenario.
+    case SSL_R_UNKNOWN_PROTOCOL:
+    case SSL_R_SSL_HANDSHAKE_FAILURE:
+    case SSL_R_DECRYPTION_FAILED:
+    case SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC:
+    case SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG:
+    case SSL_R_DIGEST_CHECK_FAILED:
+    case SSL_R_DUPLICATE_COMPRESSION_ID:
+    case SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER:
+    case SSL_R_ENCRYPTED_LENGTH_TOO_LONG:
+    case SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST:
+    case SSL_R_EXCESSIVE_MESSAGE_SIZE:
+    case SSL_R_EXTRA_DATA_IN_MESSAGE:
+    case SSL_R_GOT_A_FIN_BEFORE_A_CCS:
+    case SSL_R_ILLEGAL_PADDING:
+    case SSL_R_INVALID_CHALLENGE_LENGTH:
+    case SSL_R_INVALID_COMMAND:
+    case SSL_R_INVALID_PURPOSE:
+    case SSL_R_INVALID_STATUS_RESPONSE:
+    case SSL_R_INVALID_TICKET_KEYS_LENGTH:
+    case SSL_R_KEY_ARG_TOO_LONG:
+    case SSL_R_READ_WRONG_PACKET_TYPE:
+    // SSL_do_handshake reports this error when the server responds to a
+    // ClientHello with a fatal close_notify alert.
+    case SSL_AD_REASON_OFFSET + SSL_AD_CLOSE_NOTIFY:
+    case SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE:
+    // TODO(joth): SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE may be returned from the
+    // server after receiving ClientHello if there's no common supported cipher.
+    // Ideally we'd map that specific case to ERR_SSL_VERSION_OR_CIPHER_MISMATCH
+    // to match the NSS implementation. See also http://goo.gl/oMtZW
+    case SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE:
+    case SSL_R_SSLV3_ALERT_NO_CERTIFICATE:
+    case SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER:
+    case SSL_R_TLSV1_ALERT_DECODE_ERROR:
+    case SSL_R_TLSV1_ALERT_DECRYPTION_FAILED:
+    case SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION:
+    case SSL_R_TLSV1_ALERT_INTERNAL_ERROR:
+    case SSL_R_TLSV1_ALERT_NO_RENEGOTIATION:
+    case SSL_R_TLSV1_ALERT_RECORD_OVERFLOW:
+    case SSL_R_TLSV1_ALERT_USER_CANCELLED:
+      return ERR_SSL_PROTOCOL_ERROR;
+    case SSL_R_CERTIFICATE_VERIFY_FAILED:
+      // The only way that the certificate verify callback can fail is if
+      // the leaf certificate changed during a renegotiation.
+      return ERR_SSL_SERVER_CERT_CHANGED;
+    default:
+      LOG(WARNING) << "Unmapped error reason: " << ERR_GET_REASON(error_code);
+      return ERR_FAILED;
+  }
+}
+
+}  // namespace
+
+// Converts an OpenSSL error code into a net error code, walking the OpenSSL
+// error stack if needed. Note that |tracer| is not currently used in the
+// implementation, but is passed in anyway as this ensures the caller will clear
+// any residual codes left on the error stack.

[Ryan Sleevi, 2014/05/12 01:35:25]

This documentation belongs in the header.

[byungchul, 2014/05/12 18:25:23]

Done.

+int MapOpenSSLError(int err, const crypto::OpenSSLErrStackTracer& tracer) {

[Ryan Sleevi, 2014/05/12 01:35:25]

Definition order should match declaration order.

[byungchul, 2014/05/12 18:25:23]

Done.

+  switch (err) {
+    case SSL_ERROR_WANT_READ:
+    case SSL_ERROR_WANT_WRITE:
+      return ERR_IO_PENDING;
+    case SSL_ERROR_SYSCALL:
+      LOG(ERROR) << "OpenSSL SYSCALL error, earliest error code in "
+                    "error queue: " << ERR_peek_error() << ", errno: "
+                 << errno;
+      return ERR_SSL_PROTOCOL_ERROR;
+    case SSL_ERROR_SSL:
+      return MapOpenSSLErrorSSL();
+    default:
+      // TODO(joth): Implement full mapping.
+      LOG(WARNING) << "Unknown OpenSSL error " << err;
+      return ERR_SSL_PROTOCOL_ERROR;
+  }
+}
+
+SslSetClearMask::SslSetClearMask()
+    : set_mask(0),
+      clear_mask(0) {
+}
+
+void SslSetClearMask::ConfigureFlag(long flag, bool state) {
+  (state ? set_mask : clear_mask) |= flag;
+  // Make sure we haven't got any intersection in the set & clear options.
+  DCHECK_EQ(0, set_mask & clear_mask) << flag << ":" << state;
+}
+
+}  // namespace net