1 /*
2  * Copyright (C) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 #ifndef HAP_FILEDATASOURCE_H
16 #define HAP_FILEDATASOURCE_H
17 
18 #include "common/data_source.h"
19 #include "common/random_access_file.h"
20 #include "util/digest_parameter.h"
21 
22 namespace OHOS {
23 namespace Security {
24 namespace Verify {
25 class HapFileDataSource : public DataSource {
26 public:
27     HapFileDataSource(RandomAccessFile& hapFile, long long offset, long long size, long long position);
28     ~HapFileDataSource();
29     bool HasRemaining() const override;
30     long long Remaining() const override;
31     void Reset() override;
32     bool ReadDataAndDigestUpdate(const DigestParameter& digestParam, int32_t chunkSize) override;
33 
34 private:
35     RandomAccessFile& hapFileRandomAccess;
36     long long fileOffset;
37     long long sourceSize;
38     long long sourcePosition;
39 };
40 } // namespace Verify
41 } // namespace Security
42 } // namespace OHOS
43 #endif // HAP_FILEDATASOURCE_H
44