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#include "config.h"
#include "download_manager.hpp"
#include "xyz/openbmc_project/Common/error.hpp"
#include <sys/wait.h>
#include <unistd.h>
#include <algorithm>
#include <experimental/filesystem>
#include <iostream>
#include <phosphor-logging/elog-errors.hpp>
#include <phosphor-logging/elog.hpp>
#include <phosphor-logging/log.hpp>
#include <string>
namespace phosphor
{
namespace software
{
namespace manager
{
using namespace sdbusplus::xyz::openbmc_project::Common::Error;
using namespace phosphor::logging;
namespace fs = std::experimental::filesystem;
void Download::downloadViaTFTP(std::string fileName, std::string serverAddress)
{
using Argument = xyz::openbmc_project::Common::InvalidArgument;
// Sanitize the fileName string
if (!fileName.empty())
{
fileName.erase(std::remove(fileName.begin(), fileName.end(), '/'),
fileName.end());
fileName = fileName.substr(fileName.find_first_not_of('.'));
}
if (fileName.empty())
{
log<level::ERR>("Error FileName is empty");
elog<InvalidArgument>(Argument::ARGUMENT_NAME("FileName"),
Argument::ARGUMENT_VALUE(fileName.c_str()));
return;
}
if (serverAddress.empty())
{
log<level::ERR>("Error ServerAddress is empty");
elog<InvalidArgument>(Argument::ARGUMENT_NAME("ServerAddress"),
Argument::ARGUMENT_VALUE(serverAddress.c_str()));
return;
}
log<level::INFO>("Downloading via TFTP",
entry("FILENAME=%s", fileName.c_str()),
entry("SERVERADDRESS=%s", serverAddress.c_str()));
// Check if IMAGE DIR exists
fs::path imgDirPath(IMG_UPLOAD_DIR);
if (!fs::is_directory(imgDirPath))
{
log<level::ERR>("Error Image Dir does not exist");
elog<InternalFailure>();
return;
}
pid_t pid = fork();
if (pid == 0)
{
pid_t nextPid = fork();
if (nextPid == 0)
{
// child process
execl("/usr/bin/tftp", "tftp", "-g", "-r", fileName.c_str(),
serverAddress.c_str(), "-l",
(std::string{IMG_UPLOAD_DIR} + '/' + fileName).c_str(),
(char*)0);
// execl only returns on fail
log<level::ERR>("Error occurred during the TFTP call");
elog<InternalFailure>();
}
else if (nextPid < 0)
{
log<level::ERR>("Error occurred during fork");
elog<InternalFailure>();
}
// do nothing as parent if all is going well
// when parent exits, child will be reparented under init
// and then be reaped properly
exit(0);
}
else if (pid < 0)
{
log<level::ERR>("Error occurred during fork");
elog<InternalFailure>();
}
else
{
int status;
if (waitpid(pid, &status, 0) < 0)
{
log<level::ERR>("waitpid error");
}
else if (WEXITSTATUS(status) != 0)
{
log<level::ERR>("failed to launch tftp");
}
}
return;
}
} // namespace manager
} // namespace software
} // namespace phosphor
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