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ftpiiu_plugin/source/ftpServer.cpp

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// ftpd is a server implementation based on the following:
// - RFC 959 (https://tools.ietf.org/html/rfc959)
// - RFC 3659 (https://tools.ietf.org/html/rfc3659)
// - suggested implementation details from https://cr.yp.to/ftp/filesystem.html
//
// Copyright (C) 2023 Michael Theall
//
// This program 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.
//
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
#include "ftpServer.h"
#include "fs.h"
#ifndef __WIIU__
#include "licenses.h"
#endif
#include "log.h"
#include "platform.h"
#include "socket.h"
#ifndef __WIIU__
#include "imgui.h"
#endif
#ifdef NDS
#include <dswifi9.h>
#endif
#include <arpa/inet.h>
#include <sys/statvfs.h>
#include <unistd.h>
#include <algorithm>
#include <cctype>
#include <chrono>
#include <cstdio>
#include <cstring>
#include <mutex>
#include <string_view>
#include <thread>
using namespace std::chrono_literals;
#ifdef NDS
#define LOCKED(x) x
#else
#define LOCKED(x) \
do \
{ \
auto const lock = std::scoped_lock (m_lock); \
x; \
} while (0)
#endif
namespace
{
/// \brief Application start time
auto const s_startTime = std::time (nullptr);
#ifndef NDS
/// \brief Mutex for s_freeSpace
platform::Mutex s_lock;
#endif
/// \brief Free space string
std::string s_freeSpace;
#ifndef CLASSIC
#ifndef NDEBUG
std::string printable (char *const data_, std::size_t const size_)
{
std::string result;
result.reserve (size_);
for (std::size_t i = 0; i < size_; ++i)
{
if (std::isprint (data_[i]) || std::isspace (data_[i]))
result.push_back (data_[i]);
else
{
char buffer[5];
std::snprintf (
buffer, sizeof (buffer), "%%%02u", static_cast<unsigned char> (data_[i]));
result += buffer;
}
}
return result;
}
int curlDebug (CURL *const handle_,
curl_infotype const type_,
char *const data_,
std::size_t const size_,
void *const user_)
{
(void)user_;
auto const text = printable (data_, size_);
switch (type_)
{
case CURLINFO_TEXT:
info ("== Info: %s", text.c_str ());
break;
case CURLINFO_HEADER_OUT:
info ("=> Send header: %s", text.c_str ());
break;
case CURLINFO_DATA_OUT:
info ("=> Send data: %s", text.c_str ());
break;
case CURLINFO_SSL_DATA_OUT:
info ("=> Send SSL data: %s", text.c_str ());
break;
case CURLINFO_HEADER_IN:
info ("<= Receive header: %s", text.c_str ());
break;
case CURLINFO_DATA_IN:
info ("<= Receive data: %s", text.c_str ());
break;
case CURLINFO_SSL_DATA_IN:
info ("<= Receive SSL data: %s", text.c_str ());
break;
default:
break;
}
return 0;
}
#endif
std::size_t curlCallback (void *const contents_,
std::size_t const size_,
std::size_t const count_,
void *const user_)
{
auto const total = size_ * count_;
auto const start = static_cast<char *> (contents_);
auto const end = start + total;
auto &result = *static_cast<std::string *> (user_);
result.insert (std::end (result), start, end);
return total;
}
#endif
}
///////////////////////////////////////////////////////////////////////////
FtpServer::~FtpServer ()
{
m_quit = true;
#ifndef NDS
m_thread.join ();
#endif
#ifndef CLASSIC
if (m_uploadLogCurl)
{
curl_multi_remove_handle (m_uploadLogCurlM, m_uploadLogCurl);
curl_easy_cleanup (m_uploadLogCurl);
curl_mime_free (m_uploadLogMime);
}
if (m_uploadLogCurlM)
curl_multi_cleanup (m_uploadLogCurlM);
#endif
}
FtpServer::FtpServer (UniqueFtpConfig config_) : m_config (std::move (config_)), m_quit (false)
{
#ifndef NDS
m_thread = platform::Thread (std::bind (&FtpServer::threadFunc, this));
#endif
}
void FtpServer::draw ()
{
#ifdef NDS
loop ();
#endif
#ifdef CLASSIC
{
char port[7];
#ifndef NDS
auto const lock = std::scoped_lock (m_lock);
#endif
if (m_socket)
std::sprintf (port, ":%u", m_socket->sockName ().port ());
#ifndef NO_CONSOLE
consoleSelect (&g_statusConsole);
std::printf ("\x1b[0;0H\x1b[32;1m%s \x1b[36;1m%s%s",
STATUS_STRING,
m_socket ? m_socket->sockName ().name () : "Waiting on WiFi",
m_socket ? port : "");
#endif
#ifndef NDS
char timeBuffer[16];
auto const now = std::time (nullptr);
std::strftime (timeBuffer, sizeof (timeBuffer), "%H:%M:%S", std::localtime (&now));
std::printf (" \x1b[37;1m%s", timeBuffer);
#endif
std::fputs ("\x1b[K", stdout);
std::fflush (stdout);
}
{
#ifndef NDS
auto const lock = std::scoped_lock (s_lock);
#endif
if (!s_freeSpace.empty ())
{
#ifndef NO_CONSOLE
consoleSelect (&g_statusConsole);
std::printf ("\x1b[0;%uH\x1b[32;1m%s",
static_cast<unsigned> (g_statusConsole.windowWidth - s_freeSpace.size () + 1),
s_freeSpace.c_str ());
std::fflush (stdout);
#endif
}
}
{
#ifndef NDS
auto const lock = std::scoped_lock (m_lock);
#endif
#ifndef NO_CONSOLE
consoleSelect (&g_sessionConsole);
std::fputs ("\x1b[2J", stdout);
for (auto &session : m_sessions)
{
session->draw ();
if (&session != &m_sessions.back ())
std::fputc ('\n', stdout);
}
std::fflush (stdout);
#endif
}
drawLog ();
#else
auto const &io = ImGui::GetIO ();
auto const width = io.DisplaySize.x;
auto const height = io.DisplaySize.y;
ImGui::SetNextWindowPos (ImVec2 (0, 0), ImGuiCond_FirstUseEver);
#ifdef __3DS__
// top screen
ImGui::SetNextWindowSize (ImVec2 (width, height * 0.5f));
#else
ImGui::SetNextWindowSize (ImVec2 (width, height));
#endif
{
char title[64];
{
auto const serverLock = std::scoped_lock (m_lock);
std::snprintf (title,
sizeof (title),
STATUS_STRING " %s###ftpd",
m_socket ? m_name.c_str () : "Waiting for WiFi...");
}
ImGui::Begin (title,
nullptr,
ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize
#ifndef __3DS__
| ImGuiWindowFlags_MenuBar
#endif
);
}
#ifndef __3DS__
showMenu ();
#endif
#ifndef __3DS__
ImGui::BeginChild (
"Logs", ImVec2 (0, 0.5f * height), false, ImGuiWindowFlags_HorizontalScrollbar);
#endif
drawLog ();
#ifndef __3DS__
ImGui::EndChild ();
#endif
#ifdef __3DS__
ImGui::End ();
// bottom screen
ImGui::SetNextWindowSize (ImVec2 (width * 0.8f, height * 0.5f));
ImGui::SetNextWindowPos (ImVec2 (width * 0.1f, height * 0.5f), ImGuiCond_FirstUseEver);
ImGui::Begin ("Sessions",
nullptr,
ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize |
ImGuiWindowFlags_MenuBar);
showMenu ();
#else
ImGui::Separator ();
#endif
{
auto const lock = std::scoped_lock (m_lock);
for (auto &session : m_sessions)
session->draw ();
}
ImGui::End ();
#endif
}
UniqueFtpServer FtpServer::create ()
{
updateFreeSpace ();
auto config = FtpConfig::load (FTPDCONFIG);
return UniqueFtpServer (new FtpServer (std::move (config)));
}
std::string FtpServer::getFreeSpace ()
{
#ifndef NDS
auto const lock = std::scoped_lock (s_lock);
#endif
return s_freeSpace;
}
void FtpServer::updateFreeSpace ()
{
struct statvfs st;
#if defined(NDS) || defined(__3DS__) || defined(__SWITCH__)
if (::statvfs ("sdmc:/", &st) != 0)
#else
if (::statvfs ("/", &st) != 0)
#endif
return;
auto freeSpace = fs::printSize (static_cast<std::uint64_t> (st.f_bsize) * st.f_bfree);
#ifndef NDS
auto const lock = std::scoped_lock (s_lock);
#endif
if (freeSpace != s_freeSpace)
s_freeSpace = std::move (freeSpace);
}
std::time_t FtpServer::startTime ()
{
return s_startTime;
}
void FtpServer::handleNetworkFound ()
{
SockAddr addr;
if (!platform::networkAddress (addr))
return;
std::uint16_t port;
{
#ifndef NDS
auto const lock = m_config->lockGuard ();
#endif
port = m_config->port ();
}
addr.setPort (port);
auto socket = Socket::create ();
if (!socket)
return;
if (port != 0 && !socket->setReuseAddress (true))
return;
if (!socket->bind (addr))
return;
if (!socket->listen (10))
return;
auto const &sockName = socket->sockName ();
auto const name = sockName.name ();
m_name.resize (std::strlen (name) + 3 + 5);
m_name.resize (std::sprintf (m_name.data (), "[%s]:%u", name, sockName.port ()));
info ("Started server at %s\n", m_name.c_str ());
LOCKED (m_socket = std::move (socket));
}
void FtpServer::handleNetworkLost ()
{
{
// destroy sessions
std::vector<UniqueFtpSession> sessions;
LOCKED (sessions = std::move (m_sessions));
}
{
// destroy command socket
UniqueSocket sock;
LOCKED (sock = std::move (m_socket));
}
info ("Stopped server at %s\n", m_name.c_str ());
}
#ifndef CLASSIC
void FtpServer::showMenu ()
{
auto const prevShowSettings = m_showSettings;
auto const prevShowAbout = m_showAbout;
if (ImGui::BeginMenuBar ())
{
#if defined(__3DS__) || defined(__SWITCH__)
if (ImGui::BeginMenu ("Menu \xee\x80\x83")) // Y Button
#else
if (ImGui::BeginMenu ("Menu"))
#endif
{
if (ImGui::MenuItem ("Settings"))
m_showSettings = true;
if (ImGui::MenuItem ("Upload Log"))
{
#ifndef NDS
auto const lock = std::scoped_lock (m_lock);
#endif
if (!m_uploadLogCurlM)
m_uploadLogCurlM = curl_multi_init ();
if (m_uploadLogCurlM && !m_uploadLogCurl.load (std::memory_order_relaxed))
{
m_uploadLogData = getLog ();
auto const handle = curl_easy_init ();
#ifdef __3DS__
// 3DS CA fails peer verification, so add CA here
curl_easy_setopt (handle, CURLOPT_CAINFO, "romfs:/sni.cloudflaressl.com.ca");
#endif
#ifndef NDEBUG
curl_easy_setopt (handle, CURLOPT_DEBUGFUNCTION, &curlDebug);
curl_easy_setopt (handle, CURLOPT_DEBUGDATA, nullptr);
curl_easy_setopt (handle, CURLOPT_VERBOSE, 1L);
#endif
// write result into string
m_uploadLogResult.clear ();
curl_easy_setopt (handle, CURLOPT_WRITEFUNCTION, &curlCallback);
curl_easy_setopt (handle, CURLOPT_WRITEDATA, &m_uploadLogResult);
// set headers
static char contentType[] = "Content-Type: multipart/form-data";
static curl_slist const headers = {contentType, nullptr};
curl_easy_setopt (handle, CURLOPT_URL, "https://hastebin.com/documents");
curl_easy_setopt (handle, CURLOPT_HTTPHEADER, &headers);
// set form data
auto const mime = curl_mime_init (handle);
auto const part = curl_mime_addpart (mime);
curl_mime_name (part, "data");
curl_mime_data (part, m_uploadLogData.data (), m_uploadLogData.size ());
curl_easy_setopt (handle, CURLOPT_MIMEPOST, mime);
// add to multi handle
curl_multi_add_handle (m_uploadLogCurlM, handle);
// signal network thread to process
m_uploadLogMime = mime;
m_uploadLogCurl.store (handle, std::memory_order_relaxed);
}
}
if (ImGui::MenuItem ("About"))
m_showAbout = true;
ImGui::EndMenu ();
}
ImGui::EndMenuBar ();
}
if (m_showSettings)
{
if (!prevShowSettings)
{
#ifndef NDS
auto const lock = m_config->lockGuard ();
#endif
m_userSetting = m_config->user ();
m_userSetting.resize (32);
m_passSetting = m_config->pass ();
m_passSetting.resize (32);
m_portSetting = m_config->port ();
#ifdef __3DS__
m_getMTimeSetting = m_config->getMTime ();
#endif
#ifdef __SWITCH__
m_enableAPSetting = m_config->enableAP ();
m_ssidSetting = m_config->ssid ();
m_ssidSetting.resize (19);
m_passphraseSetting = m_config->passphrase ();
m_passphraseSetting.resize (63);
#endif
ImGui::OpenPopup ("Settings");
}
showSettings ();
}
if (m_showAbout)
{
if (!prevShowAbout)
ImGui::OpenPopup ("About");
showAbout ();
}
}
void FtpServer::showSettings ()
{
#ifdef __3DS__
auto const &io = ImGui::GetIO ();
auto const width = io.DisplaySize.x;
auto const height = io.DisplaySize.y;
ImGui::SetNextWindowSize (ImVec2 (width * 0.8f, height * 0.5f));
ImGui::SetNextWindowPos (ImVec2 (width * 0.1f, height * 0.5f));
if (ImGui::BeginPopupModal ("Settings",
nullptr,
ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize))
#else
if (ImGui::BeginPopupModal ("Settings", nullptr, ImGuiWindowFlags_AlwaysAutoResize))
#endif
{
ImGui::InputText ("User",
m_userSetting.data (),
m_userSetting.size (),
ImGuiInputTextFlags_AutoSelectAll);
ImGui::InputText ("Pass",
m_passSetting.data (),
m_passSetting.size (),
ImGuiInputTextFlags_AutoSelectAll | ImGuiInputTextFlags_Password);
ImGui::InputScalar ("Port",
ImGuiDataType_U16,
&m_portSetting,
nullptr,
nullptr,
"%u",
ImGuiInputTextFlags_AutoSelectAll);
#ifdef __3DS__
ImGui::Checkbox ("Get mtime", &m_getMTimeSetting);
#endif
#ifdef __SWITCH__
ImGui::Checkbox ("Enable Access Point", &m_enableAPSetting);
ImGui::InputText ("SSID",
m_ssidSetting.data (),
m_ssidSetting.size (),
ImGuiInputTextFlags_AutoSelectAll);
auto const ssidError = platform::validateSSID (m_ssidSetting);
if (ssidError)
ImGui::TextColored (ImVec4 (1.0f, 0.4f, 0.4f, 1.0f), ssidError);
ImGui::InputText ("Passphrase",
m_passphraseSetting.data (),
m_passphraseSetting.size (),
ImGuiInputTextFlags_AutoSelectAll | ImGuiInputTextFlags_Password);
auto const passphraseError = platform::validatePassphrase (m_passphraseSetting);
if (passphraseError)
ImGui::TextColored (ImVec4 (1.0f, 0.4f, 0.4f, 1.0f), passphraseError);
#endif
static ImVec2 const sizes[] = {
ImGui::CalcTextSize ("Apply"),
ImGui::CalcTextSize ("Save"),
ImGui::CalcTextSize ("Reset"),
ImGui::CalcTextSize ("Cancel"),
};
static auto const maxWidth = std::max_element (
std::begin (sizes), std::end (sizes), [] (auto const &lhs_, auto const &rhs_) {
return lhs_.x < rhs_.x;
})->x;
static auto const maxHeight = std::max_element (
std::begin (sizes), std::end (sizes), [] (auto const &lhs_, auto const &rhs_) {
return lhs_.y < rhs_.y;
})->y;
auto const &style = ImGui::GetStyle ();
auto const width = maxWidth + 2 * style.FramePadding.x;
auto const height = maxHeight + 2 * style.FramePadding.y;
auto const apply = ImGui::Button ("Apply", ImVec2 (width, height));
ImGui::SameLine ();
auto const save = ImGui::Button ("Save", ImVec2 (width, height));
ImGui::SameLine ();
auto const reset = ImGui::Button ("Reset", ImVec2 (width, height));
ImGui::SameLine ();
auto const cancel = ImGui::Button ("Cancel", ImVec2 (width, height));
if (apply || save)
{
m_showSettings = false;
ImGui::CloseCurrentPopup ();
#ifndef NDS
auto const lock = m_config->lockGuard ();
#endif
m_config->setUser (m_userSetting);
m_config->setPass (m_passSetting);
m_config->setPort (m_portSetting);
#ifdef __3DS__
m_config->setGetMTime (m_getMTimeSetting);
#endif
#ifdef __SWITCH__
m_config->setEnableAP (m_enableAPSetting);
m_config->setSSID (m_ssidSetting);
m_config->setPassphrase (m_passphraseSetting);
m_apError = false;
#endif
UniqueSocket socket;
LOCKED (socket = std::move (m_socket));
}
if (save)
{
#ifndef NDS
auto const lock = m_config->lockGuard ();
#endif
if (!m_config->save (FTPDCONFIG))
error ("Failed to save config\n");
}
if (reset)
{
static auto const defaults = FtpConfig::create ();
m_userSetting = defaults->user ();
m_passSetting = defaults->pass ();
m_portSetting = defaults->port ();
#ifdef __3DS__
m_getMTimeSetting = defaults->getMTime ();
#endif
#ifdef __SWITCH__
m_enableAPSetting = defaults->enableAP ();
m_ssidSetting = defaults->ssid ();
m_passphraseSetting = defaults->passphrase ();
#endif
}
if (apply || save || cancel)
{
m_showSettings = false;
ImGui::CloseCurrentPopup ();
}
ImGui::EndPopup ();
}
}
void FtpServer::showAbout ()
{
auto const &io = ImGui::GetIO ();
auto const width = io.DisplaySize.x;
auto const height = io.DisplaySize.y;
#ifdef __3DS__
ImGui::SetNextWindowSize (ImVec2 (width * 0.8f, height * 0.5f));
ImGui::SetNextWindowPos (ImVec2 (width * 0.1f, height * 0.5f));
#else
ImGui::SetNextWindowSize (ImVec2 (width * 0.8f, height * 0.8f));
ImGui::SetNextWindowPos (ImVec2 (width * 0.1f, height * 0.1f));
#endif
if (ImGui::BeginPopupModal ("About",
nullptr,
ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize))
{
ImGui::TextUnformatted (STATUS_STRING);
ImGui::TextWrapped ("Copyright © 2023 Michael Theall, Dave Murphy, TuxSH");
ImGui::Separator ();
ImGui::Text ("Platform: %s", io.BackendPlatformName);
ImGui::Text ("Renderer: %s", io.BackendRendererName);
if (ImGui::Button ("OK", ImVec2 (100, 0)))
{
m_showAbout = false;
ImGui::CloseCurrentPopup ();
}
ImGui::Separator ();
if (ImGui::TreeNode (g_dearImGuiVersion))
{
ImGui::TextWrapped ("%s", g_dearImGuiCopyright);
ImGui::Separator ();
ImGui::TextWrapped ("%s", g_mitLicense);
ImGui::TreePop ();
}
#if defined(NDS)
#elif defined(__3DS__)
if (ImGui::TreeNode (g_libctruVersion))
{
ImGui::TextWrapped ("%s", g_zlibLicense);
ImGui::Separator ();
ImGui::TextWrapped ("%s", g_zlibLicense);
ImGui::TreePop ();
}
if (ImGui::TreeNode (g_citro3dVersion))
{
ImGui::TextWrapped ("%s", g_citro3dCopyright);
ImGui::Separator ();
ImGui::TextWrapped ("%s", g_zlibLicense);
ImGui::TreePop ();
}
#elif defined(__SWITCH__)
if (ImGui::TreeNode (g_libnxVersion))
{
ImGui::TextWrapped ("%s", g_libnxCopyright);
ImGui::Separator ();
ImGui::TextWrapped ("%s", g_libnxLicense);
ImGui::TreePop ();
}
if (ImGui::TreeNode (g_deko3dVersion))
{
ImGui::TextWrapped ("%s", g_deko3dCopyright);
ImGui::Separator ();
ImGui::TextWrapped ("%s", g_zlibLicense);
ImGui::TreePop ();
}
if (ImGui::TreeNode (g_zstdVersion))
{
ImGui::TextWrapped ("%s", g_zstdCopyright);
ImGui::Separator ();
ImGui::TextWrapped ("%s", g_bsdLicense);
ImGui::TreePop ();
}
#else
if (ImGui::TreeNode (g_glfwVersion))
{
ImGui::TextWrapped ("%s", g_glfwCopyright);
ImGui::Separator ();
ImGui::TextWrapped ("%s", g_zlibLicense);
ImGui::TreePop ();
}
#endif
ImGui::EndPopup ();
}
}
#endif
void FtpServer::loop ()
{
if (!m_socket)
{
#ifndef CLASSIC
#ifdef __SWITCH__
if (!m_apError)
{
bool enable;
std::string ssid;
std::string passphrase;
{
auto const lock = m_config->lockGuard ();
enable = m_config->enableAP ();
ssid = m_config->ssid ();
passphrase = m_config->passphrase ();
}
m_apError = !platform::enableAP (enable, ssid, passphrase);
}
#endif
#endif
if (platform::networkVisible ())
handleNetworkFound ();
}
#ifndef CLASSIC
{
auto const lock = std::scoped_lock (m_lock);
if (m_uploadLogCurl.load (std::memory_order_relaxed))
{
int busy = 0;
auto const mc = curl_multi_perform (m_uploadLogCurlM, &busy);
if (mc != CURLM_OK)
{
error ("curl_multi_perform: %d %s\n", mc, curl_multi_strerror (mc));
curl_multi_remove_handle (m_uploadLogCurlM, m_uploadLogCurl);
curl_easy_cleanup (m_uploadLogCurl);
curl_mime_free (m_uploadLogMime);
m_uploadLogMime = nullptr;
m_uploadLogCurl.store (nullptr, std::memory_order_relaxed);
}
else
{
int count = 0;
auto const msg = curl_multi_info_read (m_uploadLogCurlM, &count);
if (msg && msg->msg == CURLMSG_DONE && msg->easy_handle == m_uploadLogCurl)
{
if (msg->data.result != CURLE_OK)
info ("cURL finished with status %d\n", msg->data.result);
if (m_uploadLogResult.starts_with ("{\"key\":\""))
{
auto const key = m_uploadLogResult.substr (8, 10);
info ("https://hastebin.com/%s\n", key.c_str ());
}
curl_multi_remove_handle (m_uploadLogCurlM, m_uploadLogCurl);
curl_easy_cleanup (m_uploadLogCurl);
curl_mime_free (m_uploadLogMime);
m_uploadLogMime = nullptr;
m_uploadLogCurl.store (nullptr, std::memory_order_relaxed);
}
}
}
}
#endif
// poll listen socket
if (m_socket)
{
Socket::PollInfo info{*m_socket, POLLIN, 0};
auto const rc = Socket::poll (&info, 1, 0ms);
if (rc < 0)
{
handleNetworkLost ();
return;
}
if (rc > 0 && (info.revents & POLLIN))
{
auto socket = m_socket->accept ();
if (socket)
{
auto session = FtpSession::create (*m_config, std::move (socket));
LOCKED (m_sessions.emplace_back (std::move (session)));
}
else
{
handleNetworkLost ();
return;
}
}
}
{
std::vector<UniqueFtpSession> deadSessions;
{
// remove dead sessions
#ifndef NDS
auto const lock = std::scoped_lock (m_lock);
#endif
auto it = std::begin (m_sessions);
while (it != std::end (m_sessions))
{
auto &session = *it;
if (session->dead ())
{
deadSessions.emplace_back (std::move (session));
it = m_sessions.erase (it);
}
else
++it;
}
}
}
// poll sessions
if (!m_sessions.empty ())
{
if (!FtpSession::poll (m_sessions))
handleNetworkLost ();
}
#ifndef NDS
// avoid busy polling in background thread
else
platform::Thread::sleep (16ms);
#endif
}
void FtpServer::threadFunc ()
{
while (!m_quit)
loop ();
}
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