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author | wolfbeast <mcwerewolf@gmail.com> | 2018-02-23 11:04:39 +0100 |
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committer | wolfbeast <mcwerewolf@gmail.com> | 2018-06-05 22:24:08 +0200 |
commit | e10349ab8dda8a3f11be6aa19f2b6e29fe814044 (patch) | |
tree | 1a9b078b06a76af06839d407b7267880890afccc /security/nss/cpputil/tls_parser.h | |
parent | 75b3dd4cbffb6e4534128278300ed6c8a3ab7506 (diff) | |
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Update NSS to 3.35-RTM
Diffstat (limited to 'security/nss/cpputil/tls_parser.h')
-rw-r--r-- | security/nss/cpputil/tls_parser.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/security/nss/cpputil/tls_parser.h b/security/nss/cpputil/tls_parser.h new file mode 100644 index 000000000..a5f5771d5 --- /dev/null +++ b/security/nss/cpputil/tls_parser.h @@ -0,0 +1,145 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef tls_parser_h_ +#define tls_parser_h_ + +#include <cstdint> +#include <cstring> +#include <memory> +#if defined(WIN32) || defined(WIN64) +#include <winsock2.h> +#else +#include <arpa/inet.h> +#endif +#include "databuffer.h" +#include "sslt.h" + +namespace nss_test { + +const uint8_t kTlsChangeCipherSpecType = 20; +const uint8_t kTlsAlertType = 21; +const uint8_t kTlsHandshakeType = 22; +const uint8_t kTlsApplicationDataType = 23; +const uint8_t kTlsAltHandshakeType = 24; +const uint8_t kTlsAckType = 25; + +const uint8_t kTlsHandshakeClientHello = 1; +const uint8_t kTlsHandshakeServerHello = 2; +const uint8_t kTlsHandshakeNewSessionTicket = 4; +const uint8_t kTlsHandshakeHelloRetryRequest = 6; +const uint8_t kTlsHandshakeEncryptedExtensions = 8; +const uint8_t kTlsHandshakeCertificate = 11; +const uint8_t kTlsHandshakeServerKeyExchange = 12; +const uint8_t kTlsHandshakeCertificateRequest = 13; +const uint8_t kTlsHandshakeCertificateVerify = 15; +const uint8_t kTlsHandshakeClientKeyExchange = 16; +const uint8_t kTlsHandshakeFinished = 20; + +const uint8_t kTlsAlertWarning = 1; +const uint8_t kTlsAlertFatal = 2; + +const uint8_t kTlsAlertCloseNotify = 0; +const uint8_t kTlsAlertUnexpectedMessage = 10; +const uint8_t kTlsAlertBadRecordMac = 20; +const uint8_t kTlsAlertRecordOverflow = 22; +const uint8_t kTlsAlertHandshakeFailure = 40; +const uint8_t kTlsAlertIllegalParameter = 47; +const uint8_t kTlsAlertDecodeError = 50; +const uint8_t kTlsAlertDecryptError = 51; +const uint8_t kTlsAlertProtocolVersion = 70; +const uint8_t kTlsAlertInternalError = 80; +const uint8_t kTlsAlertInappropriateFallback = 86; +const uint8_t kTlsAlertMissingExtension = 109; +const uint8_t kTlsAlertUnsupportedExtension = 110; +const uint8_t kTlsAlertUnrecognizedName = 112; +const uint8_t kTlsAlertNoApplicationProtocol = 120; + +const uint8_t kTlsFakeChangeCipherSpec[] = { + kTlsChangeCipherSpecType, // Type + 0xfe, + 0xff, // Version + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x10, // Fictitious sequence # + 0x00, + 0x01, // Length + 0x01 // Value +}; + +static const uint8_t kTls13PskKe = 0; +static const uint8_t kTls13PskDhKe = 1; +static const uint8_t kTls13PskAuth = 0; +static const uint8_t kTls13PskSignAuth = 1; + +inline std::ostream& operator<<(std::ostream& os, SSLProtocolVariant v) { + return os << ((v == ssl_variant_stream) ? "TLS" : "DTLS"); +} + +inline bool IsDtls(uint16_t version) { return (version & 0x8000) == 0x8000; } + +inline uint16_t NormalizeTlsVersion(uint16_t version) { + if (version == 0xfeff) { + return 0x0302; // special: DTLS 1.0 == TLS 1.1 + } + if (IsDtls(version)) { + return (version ^ 0xffff) + 0x0201; + } + return version; +} + +inline uint16_t TlsVersionToDtlsVersion(uint16_t version) { + if (version == 0x0302) { + return 0xfeff; + } + if (version == 0x0304) { + return version; + } + return 0xffff - version + 0x0201; +} + +inline size_t WriteVariable(DataBuffer* target, size_t index, + const DataBuffer& buf, size_t len_size) { + index = target->Write(index, static_cast<uint32_t>(buf.len()), len_size); + return target->Write(index, buf.data(), buf.len()); +} + +class TlsParser { + public: + TlsParser(const uint8_t* data, size_t len) : buffer_(data, len), offset_(0) {} + explicit TlsParser(const DataBuffer& buf) : buffer_(buf), offset_(0) {} + + bool Read(uint8_t* val); + // Read an integral type of specified width. + bool Read(uint32_t* val, size_t size); + // Reads len bytes into dest buffer, overwriting it. + bool Read(DataBuffer* dest, size_t len); + // Reads bytes into dest buffer, overwriting it. The number of bytes is + // determined by reading from len_size bytes from the stream first. + bool ReadVariable(DataBuffer* dest, size_t len_size); + + bool Skip(size_t len); + bool SkipVariable(size_t len_size); + + size_t consumed() const { return offset_; } + size_t remaining() const { return buffer_.len() - offset_; } + + private: + void consume(size_t len) { offset_ += len; } + const uint8_t* ptr() const { return buffer_.data() + offset_; } + + DataBuffer buffer_; + size_t offset_; +}; + +} // namespace nss_test + +#endif |