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/**
* Copyright (C) 2021 Saturneric <[email protected]>
*
* This file is part of GpgFrontend.
*
* GpgFrontend is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GpgFrontend is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from
* the gpg4usb project, which is under GPL-3.0-or-later.
*
* All the source code of GpgFrontend was modified and released by
* Saturneric <[email protected]> starting on May 12, 2021.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include "GpgCommandExecutor.h"
#include <memory>
#include <string>
#include "GpgFunctionObject.h"
#include "core/thread/TaskRunnerGetter.h"
#include "thread/DataObject.h"
namespace GpgFrontend {
GpgCommandExecutor::GpgCommandExecutor(int channel)
: SingletonFunctionObject<GpgCommandExecutor>(channel) {}
void GpgCommandExecutor::ExecuteSync(ExecuteContext context) {
Thread::Task *task = build_task(context);
QEventLoop looper;
QObject::connect(task, &Thread::Task::SignalTaskEnd, &looper,
&QEventLoop::quit);
GpgFrontend::Thread::TaskRunnerGetter::GetInstance()
.GetTaskRunner(Thread::TaskRunnerGetter::kTaskRunnerType_External_Process)
->PostTask(task);
// block until task finished
// this is to keep reference vaild until task finished
looper.exec();
}
void GpgCommandExecutor::ExecuteConcurrentlyAsync(ExecuteContexts contexts) {
for (auto &context : contexts) {
auto &cmd = context.cmd;
SPDLOG_INFO("gpg concurrently called cmd {}", cmd);
Thread::Task *task = build_task(context);
GpgFrontend::Thread::TaskRunnerGetter::GetInstance()
.GetTaskRunner(
Thread::TaskRunnerGetter::kTaskRunnerType_External_Process)
->PostTask(task);
}
}
void GpgCommandExecutor::ExecuteConcurrentlySync(
const ExecuteContexts contexts) {
QEventLoop looper;
int remainingTasks = contexts.size();
for (auto &context : contexts) {
auto &cmd = context.cmd;
SPDLOG_INFO("gpg concurrently called cmd {}", cmd);
Thread::Task *task = build_task(context);
QObject::connect(task, &Thread::Task::SignalTaskEnd, [&]() {
--remainingTasks;
if (remainingTasks <= 0) {
looper.quit();
}
});
GpgFrontend::Thread::TaskRunnerGetter::GetInstance()
.GetTaskRunner(
Thread::TaskRunnerGetter::kTaskRunnerType_External_Process)
->PostConcurrentTask(task);
}
looper.exec();
}
Thread::Task *GpgCommandExecutor::build_task(const ExecuteContext &context) {
auto &cmd = context.cmd;
auto &arguments = context.arguments;
auto &interact_function = context.interact_func;
auto &callback = context.callback;
SPDLOG_DEBUG("building task: called cmd {} arguments size: {}", cmd,
arguments.size());
Thread::Task::TaskCallback result_callback =
[](int rtn, Thread::DataObjectPtr data_object) {
SPDLOG_DEBUG("data object use count: {}", data_object->GetObjectSize());
if (!data_object->Check<int, std::string, std::string,
GpgCommandExecutorCallback>())
throw std::runtime_error("invalid data object size");
auto exit_code = Thread::ExtractParams<int>(data_object, 0);
auto process_stdout =
Thread::ExtractParams<std::string>(data_object, 1);
auto process_stderr =
Thread::ExtractParams<std::string>(data_object, 2);
auto callback =
Thread::ExtractParams<GpgCommandExecutorCallback>(data_object, 3);
// call callback
callback(exit_code, process_stdout, process_stderr);
};
Thread::Task::TaskRunnable runner =
[](Thread::DataObjectPtr data_object) -> int {
SPDLOG_DEBUG("process runner called, data object size: {}",
data_object->GetObjectSize());
if (!data_object->Check<std::string, std::vector<std::string>,
GpgCommandExecutorInteractor,
GpgCommandExecutorCallback>())
throw std::runtime_error("invalid data object size");
// get arguments
auto cmd = Thread::ExtractParams<std::string>(data_object, 0);
SPDLOG_DEBUG("get cmd: {}", cmd);
auto arguments =
Thread::ExtractParams<std::vector<std::string>>(data_object, 1);
auto interact_func =
Thread::ExtractParams<GpgCommandExecutorInteractor>(data_object, 2);
auto callback =
Thread::ExtractParams<GpgCommandExecutorCallback>(data_object, 3);
auto *cmd_process = new QProcess();
cmd_process->setProcessChannelMode(QProcess::MergedChannels);
QObject::connect(cmd_process, &QProcess::started,
[]() -> void { SPDLOG_DEBUG("process started"); });
QObject::connect(
cmd_process, &QProcess::readyReadStandardOutput,
[interact_func, cmd_process]() { interact_func(cmd_process); });
QObject::connect(cmd_process, &QProcess::errorOccurred,
[=](QProcess::ProcessError error) {
SPDLOG_ERROR("error in executing command: {} error: {}",
cmd, error);
});
QObject::connect(
cmd_process, qOverload<int, QProcess::ExitStatus>(&QProcess::finished),
[=](int, QProcess::ExitStatus status) {
if (status == QProcess::NormalExit)
SPDLOG_DEBUG(
"proceess finished, succeed in executing command: {}, exit "
"status: {}",
cmd, status);
else
SPDLOG_ERROR(
"proceess finished, error in executing command: {}, exit "
"status: {}",
cmd, status);
});
cmd_process->setProgram(QString::fromStdString(cmd));
QStringList q_arguments;
for (const auto &argument : arguments)
q_arguments.append(QString::fromStdString(argument));
cmd_process->setArguments(q_arguments);
SPDLOG_DEBUG("process execute ready, cmd: {} {}", cmd,
q_arguments.join(" ").toStdString());
cmd_process->start();
cmd_process->waitForFinished();
std::string process_stdout =
cmd_process->readAllStandardOutput().toStdString(),
process_stderr =
cmd_process->readAllStandardError().toStdString();
int exit_code = cmd_process->exitCode();
cmd_process->close();
cmd_process->deleteLater();
data_object->Swap({exit_code, process_stdout, process_stderr, callback});
return 0;
};
return new Thread::Task(
std::move(runner), fmt::format("Execute/{}", cmd),
Thread::TransferParams(cmd, arguments, interact_function, callback),
std::move(result_callback));
}
} // namespace GpgFrontend
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