| /** @file |
| * |
| * Basic implementation of RFC 4122, see |
| * https://www.ietf.org/rfc/rfc4122.txt |
| * |
| * @section license License |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #pragma once |
| |
| #include <cstdio> |
| |
| #include "ts/apidefs.h" |
| #include "tscore/ink_memory.h" |
| |
| // This is the C++ portions of things, which will need to get wrapped in C-helper APIs. |
| class ATSUuid |
| { |
| public: |
| // Constructors |
| ATSUuid() {} |
| ATSUuid &operator=(const ATSUuid &other); |
| |
| // Initialize the UUID from a string |
| bool parseString(const char *str); |
| |
| // Initialize a UUID using appropriate logic for the version specified. This can be done multiple times. |
| void initialize(TSUuidVersion v); |
| |
| // These return the internal string representation of the UUID, do not mess with this string. There is |
| // no transfer of ownership here. You will have to make a copy to take ownership! |
| const char * |
| getString() const |
| { |
| return valid() ? _string : nullptr; |
| } |
| |
| const char * |
| c_str() const |
| { |
| return getString(); |
| } |
| |
| TSUuidVersion |
| version() const |
| { |
| return _version; |
| } |
| |
| bool |
| valid() const |
| { |
| return (TS_UUID_UNDEFINED != _version); |
| } |
| |
| // Getter's for the various UUID components. |
| uint32_t |
| getTimeLow() const |
| { |
| return _uuid.timeLow; |
| } |
| |
| uint16_t |
| getTimeMid() const |
| { |
| return _uuid.timeMid; |
| } |
| |
| uint16_t |
| getTimeHighAndVersion() const |
| { |
| return _uuid.timeHighAndVersion; |
| } |
| |
| uint8_t |
| getClockSeqAndReserved() const |
| { |
| return _uuid.clockSeqAndReserved; |
| } |
| |
| uint8_t |
| getClockSeqLow() const |
| { |
| return _uuid.clockSeqLow; |
| } |
| |
| const uint8_t * |
| getNode() const |
| { |
| return _uuid.node; |
| } |
| |
| private: |
| // This is the union of the raw data (128 bits) and the fields as specified in |
| // RFC 4122. Technically we only need the raw data, but might as well unionize here. |
| union { |
| uint8_t data[16]; |
| |
| struct { |
| uint32_t timeLow; |
| uint16_t timeMid; |
| uint16_t timeHighAndVersion; |
| uint8_t clockSeqAndReserved; |
| uint8_t clockSeqLow; |
| uint8_t node[6]; |
| }; |
| } _uuid; |
| |
| // This is the typically used visible portion of the UUID |
| TSUuidVersion _version = TS_UUID_UNDEFINED; |
| char _string[TS_UUID_STRING_LEN + 1]; |
| |
| bool |
| _toString(char *buf) |
| { |
| int len = snprintf(buf, TS_UUID_STRING_LEN + 1, "%08x-%04hx-%04hx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx", |
| _uuid.timeLow, _uuid.timeMid, _uuid.timeHighAndVersion, _uuid.clockSeqAndReserved, _uuid.clockSeqLow, |
| _uuid.node[0], _uuid.node[1], _uuid.node[2], _uuid.node[3], _uuid.node[4], _uuid.node[5]); |
| |
| return (len == TS_UUID_STRING_LEN); |
| } |
| }; |