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