1bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah/* 2bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * Copyright (C) 2010 The Android Open Source Project 30de84c911980050d32a6bb35836ce099acfc496dArun Kumar K.R * Copyright (C) 2012-2014, The Linux Foundation. All rights reserved. 4bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * 5bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * Not a Contribution, Apache license notifications and license are 6bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * retained for attribution purposes only. 7bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 8bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * Licensed under the Apache License, Version 2.0 (the "License"); 9bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * you may not use this file except in compliance with the License. 10bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * You may obtain a copy of the License at 11bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * 12bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * http://www.apache.org/licenses/LICENSE-2.0 13bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * 14bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * Unless required by applicable law or agreed to in writing, software 15bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * distributed under the License is distributed on an "AS IS" BASIS, 16bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * See the License for the specific language governing permissions and 18bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah * limitations under the License. 19bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah */ 20bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 21bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <fcntl.h> 22bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <stdint.h> 23bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <sys/types.h> 24bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <binder/Parcel.h> 25bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <binder/IBinder.h> 26bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <binder/IInterface.h> 27bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <binder/IPCThreadState.h> 28bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <utils/Errors.h> 29da8589cbe0993344665192629dbc352f6ca591c4Naseer Ahmed#include <private/android_filesystem_config.h> 30bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah#include <IQService.h> 31bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 322299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed#define QSERVICE_DEBUG 0 332299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed 34bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shahusing namespace android; 35c59c27830019a78f668f6fb2e9518483587ce098Saurabh Shahusing namespace qClient; 36bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 37bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah// --------------------------------------------------------------------------- 38bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 39bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shahnamespace qService { 40bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 41bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shahclass BpQService : public BpInterface<IQService> 42bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah{ 43bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shahpublic: 44bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah BpQService(const sp<IBinder>& impl) 45bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah : BpInterface<IQService>(impl) {} 46bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 47c59c27830019a78f668f6fb2e9518483587ce098Saurabh Shah virtual void connect(const sp<IQClient>& client) { 485a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed ALOGD_IF(QSERVICE_DEBUG, "%s: connect HWC client", __FUNCTION__); 49c59c27830019a78f668f6fb2e9518483587ce098Saurabh Shah Parcel data, reply; 50c59c27830019a78f668f6fb2e9518483587ce098Saurabh Shah data.writeInterfaceToken(IQService::getInterfaceDescriptor()); 51c59c27830019a78f668f6fb2e9518483587ce098Saurabh Shah data.writeStrongBinder(client->asBinder()); 525a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed remote()->transact(CONNECT_HWC_CLIENT, data, &reply); 53c59c27830019a78f668f6fb2e9518483587ce098Saurabh Shah } 54966a6ae6cc5b8c8ee4dd2f299a230113fc4b2b26Jeykumar Sankaran 555a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed virtual void connect(const sp<IQHDMIClient>& client) { 565a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed ALOGD_IF(QSERVICE_DEBUG, "%s: connect HDMI client", __FUNCTION__); 575a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed Parcel data, reply; 585a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed data.writeInterfaceToken(IQService::getInterfaceDescriptor()); 595a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed data.writeStrongBinder(client->asBinder()); 605a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed remote()->transact(CONNECT_HDMI_CLIENT, data, &reply); 615a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed } 625a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed 635a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed 642299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed virtual android::status_t dispatch(uint32_t command, const Parcel* inParcel, 652299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed Parcel* outParcel) { 662299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed ALOGD_IF(QSERVICE_DEBUG, "%s: dispatch in:%p", __FUNCTION__, inParcel); 670de84c911980050d32a6bb35836ce099acfc496dArun Kumar K.R status_t err = (status_t) android::FAILED_TRANSACTION; 682299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed Parcel data; 692299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed Parcel *reply = outParcel; 703b9570a337a3115ad05dee3c1aa2ecc6f82f6ab1Arun Kumar K.R data.writeInterfaceToken(IQService::getInterfaceDescriptor()); 712299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed if (inParcel && inParcel->dataSize() > 0) 722299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed data.appendFrom(inParcel, 0, inParcel->dataSize()); 732299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed err = remote()->transact(command, data, reply); 742299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed return err; 75c439b604bcd6441e3706fdcaa5084ec58cbaf16dNaseer Ahmed } 76bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah}; 77bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 78bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh ShahIMPLEMENT_META_INTERFACE(QService, "android.display.IQService"); 79bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 80bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah// ---------------------------------------------------------------------- 81bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 82bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shahstatic void getProcName(int pid, char *buf, int size); 83bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 84bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shahstatus_t BnQService::onTransact( 85bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 86bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah{ 872299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed ALOGD_IF(QSERVICE_DEBUG, "%s: code: %d", __FUNCTION__, code); 882299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed // IPC should be from certain processes only 89bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah IPCThreadState* ipc = IPCThreadState::self(); 90bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah const int callerPid = ipc->getCallingPid(); 91da8589cbe0993344665192629dbc352f6ca591c4Naseer Ahmed const int callerUid = ipc->getCallingUid(); 920de84c911980050d32a6bb35836ce099acfc496dArun Kumar K.R const int MAX_BUF_SIZE = 1024; 93bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah char callingProcName[MAX_BUF_SIZE] = {0}; 94bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 95bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah getProcName(callerPid, callingProcName, MAX_BUF_SIZE); 96da8589cbe0993344665192629dbc352f6ca591c4Naseer Ahmed 972299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed const bool permission = (callerUid == AID_MEDIA || 982299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed callerUid == AID_GRAPHICS || 992299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed callerUid == AID_ROOT || 1002299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed callerUid == AID_SYSTEM); 101bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 1025a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed if (code == CONNECT_HWC_CLIENT) { 1032299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed CHECK_INTERFACE(IQService, data, reply); 1042299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed if(callerUid != AID_GRAPHICS) { 1055a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed ALOGE("display.qservice CONNECT_HWC_CLIENT access denied: \ 1062299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed pid=%d uid=%d process=%s", 1072299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed callerPid, callerUid, callingProcName); 1082299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed return PERMISSION_DENIED; 1092299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed } 1102299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed sp<IQClient> client = 1112299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed interface_cast<IQClient>(data.readStrongBinder()); 1122299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed connect(client); 1132299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed return NO_ERROR; 1145a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed } else if(code == CONNECT_HDMI_CLIENT) { 1155a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed CHECK_INTERFACE(IQService, data, reply); 1165a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed if(callerUid != AID_SYSTEM && callerUid != AID_ROOT) { 1175a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed ALOGE("display.qservice CONNECT_HDMI_CLIENT access denied: \ 1185a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed pid=%d uid=%d process=%s", 1195a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed callerPid, callerUid, callingProcName); 1205a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed return PERMISSION_DENIED; 1215a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed } 1225a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed sp<IQHDMIClient> client = 1235a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed interface_cast<IQHDMIClient>(data.readStrongBinder()); 1245a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed connect(client); 1255a7d156b76908b60b72d1acc1d4b5959e7a9647cNaseer Ahmed return NO_ERROR; 1262299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed } else if (code > COMMAND_LIST_START && code < COMMAND_LIST_END) { 1272299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed if(!permission) { 1282299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed ALOGE("display.qservice access denied: command=%d\ 1292299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed pid=%d uid=%d process=%s", code, callerPid, 130c439b604bcd6441e3706fdcaa5084ec58cbaf16dNaseer Ahmed callerUid, callingProcName); 131c439b604bcd6441e3706fdcaa5084ec58cbaf16dNaseer Ahmed return PERMISSION_DENIED; 132c439b604bcd6441e3706fdcaa5084ec58cbaf16dNaseer Ahmed } 133c439b604bcd6441e3706fdcaa5084ec58cbaf16dNaseer Ahmed CHECK_INTERFACE(IQService, data, reply); 1342299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed dispatch(code, &data, reply); 1352299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed return NO_ERROR; 1362299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed } else { 1372299e93cfd2fbf8d0ea59e27e775e9baa27bf04aNaseer Ahmed return BBinder::onTransact(code, data, reply, flags); 138bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah } 139bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah} 140bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 141bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah//Helper 142bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shahstatic void getProcName(int pid, char *buf, int size) { 143bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah int fd = -1; 144bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah snprintf(buf, size, "/proc/%d/cmdline", pid); 145bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah fd = open(buf, O_RDONLY); 146bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah if (fd < 0) { 147c9cbe63708025b7aed15e251b2fb3a914fd842a0Ramkumar Radhakrishnan strlcpy(buf, "Unknown", size); 148bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah } else { 149cf40ec929a1ddf18023dad9647e7be08638b659dDileep Kumar Reddi ssize_t len = read(fd, buf, size - 1); 150cf40ec929a1ddf18023dad9647e7be08638b659dDileep Kumar Reddi if (len >= 0) 151cf40ec929a1ddf18023dad9647e7be08638b659dDileep Kumar Reddi buf[len] = 0; 152cf40ec929a1ddf18023dad9647e7be08638b659dDileep Kumar Reddi 153bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah close(fd); 154bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah } 155bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah} 156bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah 157bbee5b1c3475b630caa5061fbf535f87f21743f7Saurabh Shah}; // namespace qService 158