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/set_object_references_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 = 1;
24
SetObjectReferencesData(std::shared_ptr<MtpOperationContext> & context)25 SetObjectReferencesData::SetObjectReferencesData(std::shared_ptr<MtpOperationContext> &context)
26 : PayloadData(context)
27 {
28 }
29
~SetObjectReferencesData()30 SetObjectReferencesData::~SetObjectReferencesData()
31 {
32 }
33
Parser(const std::vector<uint8_t> & buffer,int32_t readSize)34 int SetObjectReferencesData::Parser(const std::vector<uint8_t> &buffer, int32_t readSize)
35 {
36 if ((context_ == nullptr) || (!context_->sessionOpen)) {
37 MEDIA_ERR_LOG("SetObjectReferencesData::parser null or session");
38 return MTP_SESSION_NOT_OPEN_CODE;
39 }
40
41 if (!MtpStorageManager::GetInstance()->HasStorage()) {
42 MEDIA_ERR_LOG("SetObjectReferencesData::parser storage");
43 return MTP_INVALID_OBJECTHANDLE_CODE;
44 }
45
46 int32_t parameterCount = (readSize - MTP_CONTAINER_HEADER_SIZE) / MTP_PARAMETER_SIZE;
47 if (parameterCount < PARSER_PARAM_SUM) {
48 MEDIA_ERR_LOG("SetObjectReferencesData::parser paramCount=%{public}u, needCount=%{public}d",
49 parameterCount, PARSER_PARAM_SUM);
50 return MTP_INVALID_PARAMETER_CODE;
51 }
52
53 size_t offset = MTP_CONTAINER_HEADER_SIZE;
54 context_->handle = MtpPacketTool::GetUInt32(buffer, offset);
55 context_->handles = MtpPacketTool::GetAUInt32(buffer, offset);
56 return MTP_SUCCESS;
57 }
58
Maker(std::vector<uint8_t> & outBuffer)59 int SetObjectReferencesData::Maker(std::vector<uint8_t> &outBuffer)
60 {
61 if ((context_ == nullptr) || (!MtpStorageManager::GetInstance()->HasStorage())) {
62 MEDIA_ERR_LOG("SetObjectReferencesData::parser null or storage");
63 return MTP_FAIL;
64 }
65
66 if (!hasSetResult_) {
67 MEDIA_ERR_LOG("SetObjectReferencesData::parser set");
68 return MTP_INVALID_OBJECTHANDLE_CODE;
69 }
70 return MTP_SUCCESS;
71 }
72
CalculateSize()73 uint32_t SetObjectReferencesData::CalculateSize()
74 {
75 std::vector<uint8_t> tmpVar;
76 int res = Maker(tmpVar);
77 if (res != MTP_SUCCESS) {
78 return res;
79 }
80 return tmpVar.size();
81 }
82
SetResult(uint16_t result)83 bool SetObjectReferencesData::SetResult(uint16_t result)
84 {
85 if (hasSetResult_) {
86 return false;
87 }
88 hasSetResult_ = true;
89 result_ = result;
90 return true;
91 }
92 } // namespace Media
93 } // namespace OHOS