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85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_SSL_SSL_CONNECTION_STATUS_FLAGS_H_
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#define NET_SSL_SSL_CONNECTION_STATUS_FLAGS_H_
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#include <stdint.h>
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#include "base/logging.h"
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#include "base/macros.h"
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namespace net {
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// Status flags for SSLInfo::connection_status.
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enum {
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// The lower 16 bits are reserved for the TLS ciphersuite id.
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SSL_CONNECTION_CIPHERSUITE_MASK = 0xffff,
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// The next two bits are reserved for the compression used.
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SSL_CONNECTION_COMPRESSION_SHIFT = 16,
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SSL_CONNECTION_COMPRESSION_MASK = 3,
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// 1 << 18 was previously used for SSL_CONNECTION_VERSION_FALLBACK.
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// 1 << 19 was previously used for SSL_CONNECTION_NO_RENEGOTIATION_EXTENSION.
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// The next three bits are reserved for the SSL version.
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SSL_CONNECTION_VERSION_SHIFT = 20,
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SSL_CONNECTION_VERSION_MASK = 7,
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// 1 << 31 (the sign bit) is reserved so that the SSL connection status will
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// never be negative.
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};
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// NOTE: the SSL version enum constants must be between 0 and
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// SSL_CONNECTION_VERSION_MASK, inclusive. These values are persisted to disk
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// and used in UMA, so they must remain stable.
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enum SSLVersion {
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SSL_CONNECTION_VERSION_UNKNOWN = 0, // Unknown SSL version.
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SSL_CONNECTION_VERSION_SSL2 = 1,
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SSL_CONNECTION_VERSION_SSL3 = 2,
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SSL_CONNECTION_VERSION_TLS1 = 3,
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SSL_CONNECTION_VERSION_TLS1_1 = 4,
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SSL_CONNECTION_VERSION_TLS1_2 = 5,
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SSL_CONNECTION_VERSION_TLS1_3 = 6,
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SSL_CONNECTION_VERSION_QUIC = 7,
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SSL_CONNECTION_VERSION_MAX,
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};
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static_assert(SSL_CONNECTION_VERSION_MAX - 1 <= SSL_CONNECTION_VERSION_MASK,
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"SSL_CONNECTION_VERSION_MASK too small");
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inline uint16_t SSLConnectionStatusToCipherSuite(int connection_status) {
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return static_cast<uint16_t>(connection_status);
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}
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inline SSLVersion SSLConnectionStatusToVersion(int connection_status) {
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return static_cast<SSLVersion>(
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(connection_status >> SSL_CONNECTION_VERSION_SHIFT) &
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SSL_CONNECTION_VERSION_MASK);
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}
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inline void SSLConnectionStatusSetCipherSuite(uint16_t cipher_suite,
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int* connection_status) {
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// Clear out the old ciphersuite.
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*connection_status &= ~SSL_CONNECTION_CIPHERSUITE_MASK;
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// Set the new ciphersuite.
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*connection_status |= cipher_suite;
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}
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inline void SSLConnectionStatusSetVersion(int version, int* connection_status) {
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DCHECK_GT(version, 0);
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DCHECK_LT(version, SSL_CONNECTION_VERSION_MAX);
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// Clear out the old version.
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*connection_status &=
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~(SSL_CONNECTION_VERSION_MASK << SSL_CONNECTION_VERSION_SHIFT);
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// Set the new version.
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*connection_status |=
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((version & SSL_CONNECTION_VERSION_MASK) << SSL_CONNECTION_VERSION_SHIFT);
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}
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} // namespace net
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#endif // NET_SSL_SSL_CONNECTION_STATUS_FLAGS_H_
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