1 /*
2 * Copyright (c) 2023 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 <hdf_base.h>
17 #include <hdf_device_desc.h>
18 #include <hdf_log.h>
19 #include <hdf_sbuf_ipc.h>
20 #include "v1_0/secure_element_interface_stub.h"
21
22 #define HDF_LOG_TAG hdf_se
23
24 using OHOS::HDI::SecureElement::V1_0::ISecureElementInterface;
25
26 struct HdfSeInterfaceHost {
27 struct IDeviceIoService ioservice;
28 OHOS::sptr<OHOS::IRemoteObject> stub;
29 };
30
SeInterfaceDriverDispatch(struct HdfDeviceIoClient * client,int cmdId,struct HdfSBuf * data,struct HdfSBuf * reply)31 static int32_t SeInterfaceDriverDispatch(struct HdfDeviceIoClient* client, int cmdId, struct HdfSBuf* data,
32 struct HdfSBuf* reply)
33 {
34 auto* hdfSeInterfaceHost =
35 CONTAINER_OF(client->device->service, struct HdfSeInterfaceHost, ioservice);
36
37 OHOS::MessageParcel* dataParcel = nullptr;
38 OHOS::MessageParcel* replyParcel = nullptr;
39 OHOS::MessageOption option;
40
41 if (SbufToParcel(data, &dataParcel) != HDF_SUCCESS) {
42 HDF_LOGE("%{public}s:invalid data sbuf object to dispatch", __func__);
43 return HDF_ERR_INVALID_PARAM;
44 }
45 if (SbufToParcel(reply, &replyParcel) != HDF_SUCCESS) {
46 HDF_LOGE("%{public}s:invalid reply sbuf object to dispatch", __func__);
47 return HDF_ERR_INVALID_PARAM;
48 }
49
50 return hdfSeInterfaceHost->stub->SendRequest(cmdId, *dataParcel, *replyParcel, option);
51 }
52
HdfSeInterfaceDriverInit(struct HdfDeviceObject * deviceObject)53 static int HdfSeInterfaceDriverInit(struct HdfDeviceObject* deviceObject)
54 {
55 return HDF_SUCCESS;
56 }
57
HdfSeInterfaceDriverBind(struct HdfDeviceObject * deviceObject)58 static int HdfSeInterfaceDriverBind(struct HdfDeviceObject* deviceObject)
59 {
60 auto* hdfSeInterfaceHost = new (std::nothrow) HdfSeInterfaceHost;
61 if (hdfSeInterfaceHost == nullptr) {
62 HDF_LOGE("%{public}s: failed to create HdfSeInterfaceDriverBind Object!", __func__);
63 return HDF_FAILURE;
64 }
65
66 hdfSeInterfaceHost->ioservice.Dispatch = SeInterfaceDriverDispatch;
67 hdfSeInterfaceHost->ioservice.Open = nullptr;
68 hdfSeInterfaceHost->ioservice.Release = nullptr;
69
70 auto serviceImpl = ISecureElementInterface::Get(true);
71 if (serviceImpl == nullptr) {
72 HDF_LOGE("%{public}s: failed to get of implement service", __func__);
73 delete hdfSeInterfaceHost;
74 return HDF_FAILURE;
75 }
76
77 hdfSeInterfaceHost->stub = OHOS::HDI::ObjectCollector::GetInstance().GetOrNewObject(serviceImpl,
78 ISecureElementInterface::GetDescriptor());
79 if (hdfSeInterfaceHost->stub == nullptr) {
80 HDF_LOGE("%{public}s: failed to get stub object", __func__);
81 delete hdfSeInterfaceHost;
82 return HDF_FAILURE;
83 }
84
85 deviceObject->service = &hdfSeInterfaceHost->ioservice;
86 return HDF_SUCCESS;
87 }
88
HdfSeInterfaceDriverRelease(struct HdfDeviceObject * deviceObject)89 static void HdfSeInterfaceDriverRelease(struct HdfDeviceObject* deviceObject)
90 {
91 if (deviceObject->service == nullptr) {
92 HDF_LOGE("HdfSeInterfaceDriverRelease not initted");
93 return;
94 }
95
96 auto* hdfSeInterfaceHost =
97 CONTAINER_OF(deviceObject->service, struct HdfSeInterfaceHost, ioservice);
98 delete hdfSeInterfaceHost;
99 }
100
101 static struct HdfDriverEntry g_seInterfaceDriverEntry = {
102 .moduleVersion = 1,
103 .moduleName = "secure_element_service",
104 .Bind = HdfSeInterfaceDriverBind,
105 .Init = HdfSeInterfaceDriverInit,
106 .Release = HdfSeInterfaceDriverRelease,
107 };
108
109 #ifdef __cplusplus
110 extern "C" {
111 #endif /* __cplusplus */
112 HDF_INIT(g_seInterfaceDriverEntry);
113 #ifdef __cplusplus
114 }
115 #endif /* __cplusplus */
116