esed/esed.cpp

/*
 * Copyright (C) 2017 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.
 */

#include <chrono>
#include <string>
#include <thread>

#include <android-base/logging.h>
#include <hidl/HidlTransportSupport.h>
#include <utils/StrongPointer.h>

#include "libese.h"

// Select the implementation
#include "pn81a/pn81a.h"
using EseInterfaceImpl = android::esed::pn81a::EseInterface;

using android::OK;
using android::sp;
using android::status_t;
using android::hardware::configureRpcThreadpool;
using android::hardware::joinRpcThreadpool;

using namespace std::chrono_literals;

int main(int /* argc */, char** /* argv */) {
    LOG(INFO) << "Starting esed...";

    // Open connection to the eSE
    uint32_t failCount = 0;
    while (true) {
        EseInterfaceImpl ese;
        ese.init();
        if (ese.open() < 0) {
            std::string errMsg = "Failed to open connection to eSE";
            if (ese.error()) {
                errMsg += " (" + std::to_string(ese.error_code()) + "): " + ese.error_message();
            } else {
                errMsg += ": reason unknown";
            }
            LOG(ERROR) << errMsg;

            // FIXME: this loop with sleep is a hack to avoid the process repeatedly crashing
            ++failCount;
            std::this_thread::sleep_for(failCount * 5s);
            continue;
        }
        LOG(INFO) << "Opened connection to the eSE";
        break;
    }

    // This will be a single threaded daemon. This is important as libese is not
    // thread safe so we use binder to synchronize requests for us.
    constexpr bool thisThreadWillJoinPool = true;
    configureRpcThreadpool(1, thisThreadWillJoinPool);

    // -- Instantiate other applet HALs here --

    joinRpcThreadpool();
    return -1; // Should never reach here
}