1 /*
2 * Copyright (c) 2024-2024 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
16 #include "block_head.h"
17 #include "byte_buffer.h"
18 #include "sign_head.h"
19
20 namespace OHOS {
21 namespace SignatureTools {
22
GetBlockLen()23 int BlockHead::GetBlockLen()
24 {
25 return BLOCK_LEN;
26 }
27
GetElfBlockLen()28 int BlockHead::GetElfBlockLen()
29 {
30 return ELF_BLOCK_LEN;
31 }
32
GetBlockHead(const char type, const char tag, const short length, const int offset)33 std::string BlockHead::GetBlockHead(const char type, const char tag, const short length, const int offset)
34 {
35 std::vector<int8_t> tmpVec;
36 tmpVec.push_back(type);
37 tmpVec.push_back(tag);
38 tmpVec.push_back((length >> BIT_SIZE) & 0xff);
39 tmpVec.push_back(length & 0xff);
40 tmpVec.push_back((offset >> TRIPLE_BIT_SIZE) & 0xff);
41 tmpVec.push_back((offset >> DOUBLE_BIT_SIZE) & 0xff);
42 tmpVec.push_back((offset >> BIT_SIZE) & 0xff);
43 tmpVec.push_back(offset & 0xff);
44
45 return std::string(tmpVec.begin(), tmpVec.end());
46 }
47
GetBlockHeadLittleEndian(const char type, const char tag, const int length, const int offset)48 std::vector<int8_t> BlockHead::GetBlockHeadLittleEndian(const char type, const char tag,
49 const int length, const int offset)
50 {
51 ByteBuffer bf = ByteBuffer(BlockHead::ELF_BLOCK_LEN);
52 bf.PutByte(type);
53 bf.PutByte(tag);
54 bf.PutByte(0);
55 bf.PutByte(0);
56 bf.PutInt32(length);
57 bf.PutInt32(offset);
58 int8_t ret[BlockHead::ELF_BLOCK_LEN] = {0};
59 bf.GetData(0, ret, BlockHead::ELF_BLOCK_LEN);
60 std::vector<int8_t> byte(ret, ret + BlockHead::ELF_BLOCK_LEN);
61 return byte;
62 }
63
64 } // namespace SignatureTools
65 } // namespace OHOS
66