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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "InputManager"
//#define LOG_NDEBUG 0
#include "InputManager.h"
#include "InputDispatcherFactory.h"
#include "InputReaderFactory.h"
#include "UnwantedInteractionBlocker.h"
#include <binder/IPCThreadState.h>
#include <log/log.h>
#include <unordered_map>
#include <private/android_filesystem_config.h>
namespace android {
using gui::FocusRequest;
static int32_t exceptionCodeFromStatusT(status_t status) {
switch (status) {
case OK:
return binder::Status::EX_NONE;
case INVALID_OPERATION:
return binder::Status::EX_UNSUPPORTED_OPERATION;
case BAD_VALUE:
case BAD_TYPE:
case NAME_NOT_FOUND:
return binder::Status::EX_ILLEGAL_ARGUMENT;
case NO_INIT:
return binder::Status::EX_ILLEGAL_STATE;
case PERMISSION_DENIED:
return binder::Status::EX_SECURITY;
default:
return binder::Status::EX_TRANSACTION_FAILED;
}
}
/**
* The event flow is via the "InputListener" interface, as follows:
* InputReader -> UnwantedInteractionBlocker -> InputClassifier -> InputDispatcher
*/
InputManager::InputManager(
const sp<InputReaderPolicyInterface>& readerPolicy,
const sp<InputDispatcherPolicyInterface>& dispatcherPolicy) {
mDispatcher = createInputDispatcher(dispatcherPolicy);
mClassifier = std::make_unique<InputClassifier>(*mDispatcher);
mBlocker = std::make_unique<UnwantedInteractionBlocker>(*mClassifier);
mReader = createInputReader(readerPolicy, *mBlocker);
}
InputManager::~InputManager() {
stop();
}
status_t InputManager::start() {
status_t result = mDispatcher->start();
if (result) {
ALOGE("Could not start InputDispatcher thread due to error %d.", result);
return result;
}
result = mReader->start();
if (result) {
ALOGE("Could not start InputReader due to error %d.", result);
mDispatcher->stop();
return result;
}
return OK;
}
status_t InputManager::stop() {
status_t status = OK;
status_t result = mReader->stop();
if (result) {
ALOGW("Could not stop InputReader due to error %d.", result);
status = result;
}
result = mDispatcher->stop();
if (result) {
ALOGW("Could not stop InputDispatcher thread due to error %d.", result);
status = result;
}
return status;
}
InputReaderInterface& InputManager::getReader() {
return *mReader;
}
UnwantedInteractionBlockerInterface& InputManager::getUnwantedInteractionBlocker() {
return *mBlocker;
}
InputClassifierInterface& InputManager::getClassifier() {
return *mClassifier;
}
InputDispatcherInterface& InputManager::getDispatcher() {
return *mDispatcher;
}
void InputManager::monitor() {
mReader->monitor();
mBlocker->monitor();
mClassifier->monitor();
mDispatcher->monitor();
}
// Used by tests only.
binder::Status InputManager::createInputChannel(const std::string& name, InputChannel* outChannel) {
IPCThreadState* ipc = IPCThreadState::self();
const int uid = ipc->getCallingUid();
if (uid != AID_SHELL && uid != AID_ROOT) {
ALOGE("Invalid attempt to register input channel over IPC"
"from non shell/root entity (PID: %d)", ipc->getCallingPid());
return binder::Status::ok();
}
base::Result<std::unique_ptr<InputChannel>> channel = mDispatcher->createInputChannel(name);
if (!channel.ok()) {
return binder::Status::fromExceptionCode(exceptionCodeFromStatusT(channel.error().code()),
channel.error().message().c_str());
}
(*channel)->copyTo(*outChannel);
return binder::Status::ok();
}
binder::Status InputManager::removeInputChannel(const sp<IBinder>& connectionToken) {
mDispatcher->removeInputChannel(connectionToken);
return binder::Status::ok();
}
status_t InputManager::dump(int fd, const Vector<String16>& args) {
std::string dump;
dump += " InputFlinger dump\n";
::write(fd, dump.c_str(), dump.size());
return NO_ERROR;
}
binder::Status InputManager::setFocusedWindow(const FocusRequest& request) {
mDispatcher->setFocusedWindow(request);
return binder::Status::ok();
}
} // namespace android
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