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/*
* Copyright (C) 2022 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 "nettestutils/DumpService.h"
#include <android-base/file.h>
#include <android/binder_status.h>
#include <sstream>
#include <thread>
// Version for code using libbinder (e.g., AIDL interfaces with the C++ backend).
android::status_t dumpService(const android::sp<android::IBinder>& binder,
const std::vector<std::string>& args,
std::vector<std::string>& outputLines) {
if (!outputLines.empty()) return -EUCLEAN;
android::base::unique_fd localFd, remoteFd;
if (!Pipe(&localFd, &remoteFd)) return -errno;
android::Vector<android::String16> str16Args;
for (const auto& arg : args) {
str16Args.push(android::String16(arg.c_str()));
}
android::status_t ret;
// dump() blocks until another thread has consumed all its output.
std::thread dumpThread =
std::thread([&ret, binder, remoteFd{std::move(remoteFd)}, str16Args]() {
ret = binder->dump(remoteFd, str16Args);
});
std::string dumpContent;
if (!android::base::ReadFdToString(localFd.get(), &dumpContent)) {
return -errno;
}
dumpThread.join();
if (ret != android::OK) return ret;
std::stringstream dumpStream(std::move(dumpContent));
std::string line;
while (std::getline(dumpStream, line)) {
outputLines.push_back(line);
}
return android::OK;
}
// Version for code using libbinder_ndk (e.g., AIDL interfaces with the NDK backend)..
android::status_t dumpService(const ndk::SpAIBinder& binder,
const char** args,
uint32_t num_args,
std::vector<std::string>& outputLines) {
if (!outputLines.empty()) return -EUCLEAN;
android::base::unique_fd localFd, remoteFd;
if (!Pipe(&localFd, &remoteFd)) return -errno;
android::status_t ret;
// dump() blocks until another thread has consumed all its output.
std::thread dumpThread =
std::thread([&ret, binder, remoteFd{std::move(remoteFd)}, args, num_args]() {
ret = AIBinder_dump(binder.get(), remoteFd, args, num_args);
});
std::string dumpContent;
if (!android::base::ReadFdToString(localFd.get(), &dumpContent)) {
return -errno;
}
dumpThread.join();
if (ret != android::OK) return ret;
std::stringstream dumpStream(dumpContent);
std::string line;
while (std::getline(dumpStream, line)) {
outputLines.push_back(std::move(line));
}
return android::OK;
}
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