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134 lines
4.8 KiB
134 lines
4.8 KiB
/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012-2016, The Linux Foundation. All rights reserved.
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*
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* Not a Contribution, Apache license notifications and license are
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* retained for attribution purposes only.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <fcntl.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <binder/Parcel.h>
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#include <binder/IBinder.h>
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#include <binder/IInterface.h>
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#include <binder/IPCThreadState.h>
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#include <utils/Errors.h>
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#include <private/android_filesystem_config.h>
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#include <IQService.h>
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#define QSERVICE_DEBUG 0
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using namespace android;
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using namespace qClient;
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// ---------------------------------------------------------------------------
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namespace qService {
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class BpQService : public BpInterface<IQService>
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{
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public:
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BpQService(const sp<IBinder>& impl)
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: BpInterface<IQService>(impl) {}
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virtual void connect(const sp<IQClient>& client) {
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ALOGD_IF(QSERVICE_DEBUG, "%s: connect HWC client", __FUNCTION__);
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Parcel data, reply;
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data.writeInterfaceToken(IQService::getInterfaceDescriptor());
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data.writeStrongBinder(IInterface::asBinder(client));
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remote()->transact(CONNECT_HWC_CLIENT, data, &reply);
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}
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virtual void connect(const sp<IQHDMIClient>& client) {
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ALOGD_IF(QSERVICE_DEBUG, "%s: connect HDMI client", __FUNCTION__);
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Parcel data, reply;
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data.writeInterfaceToken(IQService::getInterfaceDescriptor());
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data.writeStrongBinder(IInterface::asBinder(client));
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remote()->transact(CONNECT_HDMI_CLIENT, data, &reply);
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}
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virtual android::status_t dispatch(uint32_t command, const Parcel* inParcel,
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Parcel* outParcel) {
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ALOGD_IF(QSERVICE_DEBUG, "%s: dispatch in:%p", __FUNCTION__, inParcel);
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status_t err = (status_t) android::FAILED_TRANSACTION;
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Parcel data;
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Parcel *reply = outParcel;
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data.writeInterfaceToken(IQService::getInterfaceDescriptor());
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if (inParcel && inParcel->dataSize() > 0)
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data.appendFrom(inParcel, 0, inParcel->dataSize());
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err = remote()->transact(command, data, reply);
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return err;
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}
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};
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IMPLEMENT_META_INTERFACE(QService, "android.display.IQService");
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// ----------------------------------------------------------------------
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status_t BnQService::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
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{
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ALOGD_IF(QSERVICE_DEBUG, "%s: code: %d", __FUNCTION__, code);
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// IPC should be from certain processes only
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IPCThreadState* ipc = IPCThreadState::self();
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const int callerPid = ipc->getCallingPid();
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const int callerUid = ipc->getCallingUid();
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const bool permission = (callerUid == AID_MEDIA ||
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callerUid == AID_GRAPHICS ||
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callerUid == AID_ROOT ||
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callerUid == AID_CAMERASERVER ||
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callerUid == AID_SYSTEM);
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if (code == CONNECT_HWC_CLIENT) {
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CHECK_INTERFACE(IQService, data, reply);
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if(callerUid != AID_GRAPHICS) {
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ALOGE("display.qservice CONNECT_HWC_CLIENT access denied: pid=%d uid=%d",
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callerPid, callerUid);
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return PERMISSION_DENIED;
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}
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sp<IQClient> client =
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interface_cast<IQClient>(data.readStrongBinder());
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connect(client);
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return NO_ERROR;
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} else if(code == CONNECT_HDMI_CLIENT) {
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CHECK_INTERFACE(IQService, data, reply);
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if(callerUid != AID_SYSTEM && callerUid != AID_ROOT) {
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ALOGE("display.qservice CONNECT_HDMI_CLIENT access denied: pid=%d uid=%d",
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callerPid, callerUid);
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return PERMISSION_DENIED;
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}
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sp<IQHDMIClient> client =
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interface_cast<IQHDMIClient>(data.readStrongBinder());
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connect(client);
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return NO_ERROR;
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} else if (code > COMMAND_LIST_START && code < COMMAND_LIST_END) {
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if(!permission) {
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ALOGE("display.qservice access denied: command=%d pid=%d uid=%d",
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code, callerPid, callerUid);
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return PERMISSION_DENIED;
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}
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CHECK_INTERFACE(IQService, data, reply);
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dispatch(code, &data, reply);
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return NO_ERROR;
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} else {
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return BBinder::onTransact(code, data, reply, flags);
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}
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}
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}; // namespace qService
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