1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 
17 #pragma once
18 
19 #include "ChecksumCalculator.h"
20 
21 // ChecksumCalculatorThreadInfo is the class that makes ChecksumCalculator
22 // thread-safe. On the host, please only use ChecksumCalculator through this
23 // class.
24 
25 class ChecksumCalculatorThreadInfo {
26 public:
27     ChecksumCalculatorThreadInfo();
28     ~ChecksumCalculatorThreadInfo();
29 
30     ChecksumCalculator& get();
31 
32     static bool setVersion(uint32_t version);
33 
34     static uint32_t getMaxVersion();
getMaxVersionString()35     static const char* getMaxVersionString() {
36         return ChecksumCalculator::getMaxVersionStr();
37     }
38 
39     static bool writeChecksum(ChecksumCalculator* calc,
40                               void* buf,
41                               size_t bufLen,
42                               void* outputChecksum,
43                               size_t outputChecksumLen);
44 
45     static bool validate(ChecksumCalculator* calc,
46                          void* buf,
47                          size_t bufLen,
48                          void* checksum,
49                          size_t checksumLen);
50 
51     static void validOrDie(ChecksumCalculator* calc,
52                            void* buf,
53                            size_t bufLen,
54                            void* checksum,
55                            size_t checksumLen,
56                            const char* message);
57 
58 private:
59     ChecksumCalculator m_protocol;
60 };
61