1 /*
2 * Copyright (C) 2022 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 #include "payload_data/copy_object_data.h"
16 #include "media_log.h"
17 #include "media_mtp_utils.h"
18 #include "mtp_packet_tools.h"
19 #include "mtp_storage_manager.h"
20 using namespace std;
21 namespace OHOS {
22 namespace Media {
23 static constexpr int32_t PARSER_PARAM_SUM = 3;
24
CopyObjectData(std::shared_ptr<MtpOperationContext> & context)25 CopyObjectData::CopyObjectData(std::shared_ptr<MtpOperationContext> &context)
26 : PayloadData(context)
27 {
28 }
29
CopyObjectData()30 CopyObjectData::CopyObjectData()
31 {
32 }
33
~CopyObjectData()34 CopyObjectData::~CopyObjectData()
35 {
36 }
37
Parser(const std::vector<uint8_t> & buffer,int32_t readSize)38 int CopyObjectData::Parser(const std::vector<uint8_t> &buffer, int32_t readSize)
39 {
40 if ((context_ == nullptr) || (!MtpStorageManager::GetInstance()->HasStorage())) {
41 MEDIA_ERR_LOG("CopyObjectData::parser null or storage");
42 return MTP_ERROR_CONTEXT_IS_NULL;
43 }
44
45 int32_t parameterCount = (readSize - MTP_CONTAINER_HEADER_SIZE) / MTP_PARAMETER_SIZE;
46 if (parameterCount < PARSER_PARAM_SUM) {
47 MEDIA_ERR_LOG("CopyObjectData::parser paramCount=%{public}u, needCount=%{public}d",
48 parameterCount, PARSER_PARAM_SUM);
49 return MTP_ERROR_PACKET_INCORRECT;
50 }
51
52 size_t offset = MTP_CONTAINER_HEADER_SIZE;
53 context_->handle = MtpPacketTool::GetUInt32(buffer, offset);
54 context_->storageID = MtpPacketTool::GetUInt32(buffer, offset);
55 context_->parent = MtpPacketTool::GetUInt32(buffer, offset);
56 return MTP_SUCCESS;
57 }
58
Maker(std::vector<uint8_t> & outBuffer)59 int CopyObjectData::Maker(std::vector<uint8_t> &outBuffer)
60 {
61 if (!hasSetObjectHandle_) {
62 MEDIA_ERR_LOG("CopyObjectData::maker error no objectHandle");
63 return MTP_ERROR_INVALID_OBJECTHANDLE;
64 }
65
66 MtpPacketTool::PutUInt32(outBuffer, objectHandle_);
67 return MTP_SUCCESS;
68 }
69
CalculateSize()70 uint32_t CopyObjectData::CalculateSize()
71 {
72 std::vector<uint8_t> tmpVar;
73
74 int res = Maker(tmpVar);
75 if (res != MTP_SUCCESS) {
76 return res;
77 }
78
79 uint32_t size = tmpVar.size();
80 return size;
81 }
82
SetObjectHandle(uint32_t objectHandle)83 bool CopyObjectData::SetObjectHandle(uint32_t objectHandle)
84 {
85 if (hasSetObjectHandle_) {
86 return false;
87 }
88
89 hasSetObjectHandle_ = true;
90
91 objectHandle_ = objectHandle;
92 return true;
93 }
94 } // namespace Media
95 } // namespace OHOS