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BeamMP-Launcher/src/Network/Resources.cpp
Lion Kortlepel 7c24020124
implement receiving new header format
2024-06-28 09:23:30 +02:00

372 lines
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// Copyright (c) 2019-present Anonymous275.
// BeamMP Launcher code is not in the public domain and is not free software.
// One must be granted explicit permission by the copyright holder in order to modify or distribute any part of the source or binaries.
// Anything else is prohibited. Modified works may not be published and have be upstreamed to the official repository.
///
/// Created by Anonymous275 on 4/11/2020
///
#include "Network/network.hpp"
#if defined(_WIN32)
#include <ws2tcpip.h>
#elif defined(__linux__)
#include <arpa/inet.h>
#include <cstring>
#include <errno.h>
#include <netdb.h>
#include <sys/socket.h>
#include <sys/types.h>
#endif
#include "Logger.h"
#include "Startup.h"
#include <atomic>
#include <cmath>
#include <cstring>
#include <filesystem>
#include <fstream>
#include <future>
#include <iostream>
#include <string>
#include <thread>
#include <vector>
namespace fs = std::filesystem;
std::string ListOfMods;
std::vector<std::string> Split(const std::string& String, const std::string& delimiter) {
std::vector<std::string> Val;
size_t pos;
std::string token, s = String;
while ((pos = s.find(delimiter)) != std::string::npos) {
token = s.substr(0, pos);
if (!token.empty())
Val.push_back(token);
s.erase(0, pos + delimiter.length());
}
if (!s.empty())
Val.push_back(s);
return Val;
}
void CheckForDir() {
if (!fs::exists("Resources")) {
// Could we just use fs::create_directory instead?
#if defined(_WIN32)
_wmkdir(L"Resources");
#elif defined(__linux__)
fs::create_directory(L"Resources");
#endif
}
}
void WaitForConfirm() {
while (!Terminate && !ModLoaded) {
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
ModLoaded = false;
}
void Abord() {
Terminate = true;
TCPTerminate = true;
info("Terminated!");
}
std::string Auth(SOCKET Sock) {
TCPSend(strtovec("VC" + GetVer()), Sock);
auto Res = TCPRcv(Sock);
if (Res.empty() || Res[0] == 'E' || Res[0] == 'K') {
Abord();
return "";
}
TCPSend(strtovec(PublicKey), Sock);
if (Terminate)
return "";
Res = TCPRcv(Sock);
if (Res.empty() || Res[0] != 'P') {
Abord();
return "";
}
Res = Res.substr(1);
if (Res.find_first_not_of("0123456789") == std::string::npos) {
ClientID = std::stoi(Res);
} else {
Abord();
UUl("Authentication failed!");
return "";
}
TCPSend(strtovec("SR"), Sock);
if (Terminate)
return "";
Res = TCPRcv(Sock);
if (Res[0] == 'E' || Res[0] == 'K') {
Abord();
return "";
}
if (Res.empty() || Res == "-") {
info("Didn't Receive any mods...");
ListOfMods = "-";
TCPSend(strtovec("Done"), Sock);
info("Done!");
return "";
}
return Res;
}
void UpdateUl(bool D, const std::string& msg) {
if (D)
UlStatus = "UlDownloading Resource " + msg;
else
UlStatus = "UlLoading Resource " + msg;
}
void AsyncUpdate(uint64_t& Rcv, uint64_t Size, const std::string& Name) {
do {
double pr = double(Rcv) / double(Size) * 100;
std::string Per = std::to_string(trunc(pr * 10) / 10);
UpdateUl(true, Name + " (" + Per.substr(0, Per.find('.') + 2) + "%)");
std::this_thread::sleep_for(std::chrono::milliseconds(100));
} while (!Terminate && Rcv < Size);
}
char* TCPRcvRaw(SOCKET Sock, uint64_t& GRcv, uint64_t Size) {
if (Sock == -1) {
Terminate = true;
UUl("Invalid Socket");
return nullptr;
}
char* File = new char[Size];
uint64_t Rcv = 0;
do {
int Len = int(Size - Rcv);
if (Len > 1000000)
Len = 1000000;
int32_t Temp = recv(Sock, &File[Rcv], Len, MSG_WAITALL);
if (Temp < 1) {
info(std::to_string(Temp));
UUl("Socket Closed Code 1");
KillSocket(Sock);
Terminate = true;
delete[] File;
return nullptr;
}
Rcv += Temp;
GRcv += Temp;
} while (Rcv < Size && !Terminate);
return File;
}
void MultiKill(SOCKET Sock, SOCKET Sock1) {
KillSocket(Sock1);
KillSocket(Sock);
Terminate = true;
}
SOCKET InitDSock() {
SOCKET DSock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
SOCKADDR_IN ServerAddr;
if (DSock < 1) {
KillSocket(DSock);
Terminate = true;
return 0;
}
ServerAddr.sin_family = AF_INET;
ServerAddr.sin_port = htons(LastPort);
inet_pton(AF_INET, LastIP.c_str(), &ServerAddr.sin_addr);
if (connect(DSock, (SOCKADDR*)&ServerAddr, sizeof(ServerAddr)) != 0) {
KillSocket(DSock);
Terminate = true;
return 0;
}
char Code[2] = { 'D', char(ClientID) };
if (send(DSock, Code, 2, 0) != 2) {
KillSocket(DSock);
Terminate = true;
return 0;
}
return DSock;
}
std::string MultiDownload(SOCKET MSock, SOCKET DSock, uint64_t Size, const std::string& Name) {
uint64_t GRcv = 0, MSize = Size / 2, DSize = Size - MSize;
std::thread Au(AsyncUpdate, std::ref(GRcv), Size, Name);
std::packaged_task<char*()> task([&] { return TCPRcvRaw(MSock, GRcv, MSize); });
std::future<char*> f1 = task.get_future();
std::thread Dt(std::move(task));
Dt.detach();
char* DData = TCPRcvRaw(DSock, GRcv, DSize);
if (!DData) {
MultiKill(MSock, DSock);
return "";
}
f1.wait();
char* MData = f1.get();
if (!MData) {
MultiKill(MSock, DSock);
return "";
}
if (Au.joinable())
Au.join();
/// omg yes very ugly my god but i was in a rush will revisit
std::string Ret(Size, 0);
memcpy(&Ret[0], MData, MSize);
delete[] MData;
memcpy(&Ret[MSize], DData, DSize);
delete[] DData;
return Ret;
}
void InvalidResource(const std::string& File) {
UUl("Invalid mod \"" + File + "\"");
warn("The server tried to sync \"" + File + "\" that is not a .zip file!");
Terminate = true;
}
void SyncResources(SOCKET Sock) {
std::string Ret = Auth(Sock);
if (Ret.empty())
return;
info("Checking Resources...");
CheckForDir();
std::vector<std::string> list = Split(Ret, ";");
std::vector<std::string> FNames(list.begin(), list.begin() + (list.size() / 2));
std::vector<std::string> FSizes(list.begin() + (list.size() / 2), list.end());
list.clear();
Ret.clear();
int Amount = 0, Pos = 0;
std::string a, t;
for (const std::string& name : FNames) {
if (!name.empty()) {
t += name.substr(name.find_last_of('/') + 1) + ";";
}
}
if (t.empty())
ListOfMods = "-";
else
ListOfMods = t;
t.clear();
for (auto FN = FNames.begin(), FS = FSizes.begin(); FN != FNames.end() && !Terminate; ++FN, ++FS) {
auto pos = FN->find_last_of('/');
auto ZIP = FN->find(".zip");
if (ZIP == std::string::npos || FN->length() - ZIP != 4) {
InvalidResource(*FN);
return;
}
if (pos == std::string::npos)
continue;
Amount++;
}
if (!FNames.empty())
info("Syncing...");
SOCKET DSock = InitDSock();
for (auto FN = FNames.begin(), FS = FSizes.begin(); FN != FNames.end() && !Terminate; ++FN, ++FS) {
auto pos = FN->find_last_of('/');
if (pos != std::string::npos) {
a = "Resources" + FN->substr(pos);
} else
continue;
Pos++;
if (fs::exists(a)) {
if (FS->find_first_not_of("0123456789") != std::string::npos)
continue;
if (fs::file_size(a) == std::stoull(*FS)) {
UpdateUl(false, std::to_string(Pos) + "/" + std::to_string(Amount) + ": " + a.substr(a.find_last_of('/')));
std::this_thread::sleep_for(std::chrono::milliseconds(50));
try {
if (!fs::exists(GetGamePath() + "mods/multiplayer")) {
fs::create_directories(GetGamePath() + "mods/multiplayer");
}
auto modname = a.substr(a.find_last_of('/'));
#if defined(__linux__)
// Linux version of the game doesnt support uppercase letters in mod names
for (char& c : modname) {
c = ::tolower(c);
}
#endif
auto name = GetGamePath() + "mods/multiplayer" + modname;
auto tmp_name = name + ".tmp";
fs::copy_file(a, tmp_name, fs::copy_options::overwrite_existing);
fs::rename(tmp_name, name);
} catch (std::exception& e) {
error("Failed copy to the mods folder! " + std::string(e.what()));
Terminate = true;
continue;
}
WaitForConfirm();
continue;
} else
remove(a.c_str());
}
CheckForDir();
std::string FName = a.substr(a.find_last_of('/'));
do {
TCPSend(strtovec("f" + *FN), Sock);
std::string Data = TCPRcv(Sock);
if (Data == "CO" || Terminate) {
Terminate = true;
UUl("Server cannot find " + FName);
break;
}
std::string Name = std::to_string(Pos) + "/" + std::to_string(Amount) + ": " + FName;
Data = MultiDownload(Sock, DSock, std::stoull(*FS), Name);
if (Terminate)
break;
UpdateUl(false, std::to_string(Pos) + "/" + std::to_string(Amount) + ": " + FName);
std::ofstream LFS;
LFS.open(a.c_str(), std::ios_base::app | std::ios::binary);
if (LFS.is_open()) {
LFS.write(&Data[0], Data.size());
LFS.close();
}
} while (fs::file_size(a) != std::stoull(*FS) && !Terminate);
if (!Terminate) {
if (!fs::exists(GetGamePath() + "mods/multiplayer")) {
fs::create_directories(GetGamePath() + "mods/multiplayer");
}
// Linux version of the game doesnt support uppercase letters in mod names
#if defined(__linux__)
for (char& c : FName) {
c = ::tolower(c);
}
#endif
fs::copy_file(a, GetGamePath() + "mods/multiplayer" + FName, fs::copy_options::overwrite_existing);
}
WaitForConfirm();
}
KillSocket(DSock);
if (!Terminate) {
TCPSend(strtovec("Done"), Sock);
info("Done!");
} else {
UlStatus = "Ulstart";
info("Connection Terminated!");
}
}
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