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commit merge

Soda
Shwoomple 2022-10-20 10:27:48 +05:30
parent e7ce6f5cd4 ee9b5d4f67
commit e7711a3d59
3 changed files with 71 additions and 288 deletions
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2
scripts/build.sh
View File

@ -62,7 +62,7 @@ COMPILE_COMMANDS=(
"$CXX_WITH_FLAGS src/tools/dumpnbt.cpp -I./include -Lbin/lib -l:nbt.so -l:javacompat.so -l:cli.so -o bin/tools/dumpnbt"
"$CXX_WITH_FLAGS src/tools/arraydump.cpp -I./include -Lbin/lib -l:file.so -l:cli.so -o bin/tools/arraydump"
"$CXX_WITH_FLAGS src/tools/baseconvert.cpp -I./include -Lbin/lib -l:cli.so -o bin/tools/baseconvert"
#"$CXX_WITH_FLAGS src/tools/hexnet.cpp -I./include -Lbin/lib -l:cli.so -l:libsockpp.so -o bin/tools/hexnet"
"$CXX_WITH_FLAGS src/tools/hexnet.cpp -I./include -Lbin/lib -l:cli.so -l:libsockpp.so -o bin/tools/hexnet"
)
for command in ${!COMPILE_COMMANDS[@]}; do
echo "${COMPILE_COMMANDS[command]}"

53
src/lib/nbt.cpp
View File

@ -1176,6 +1176,7 @@ namespace NBT {
// FIXME: memory leak when returning errors
ErrorOr<std::vector<Tag::Generic*>> deserializeRawListContents(uint8_t data[], uint64_t dataSize, uint64_t initialPosition, uint64_t* processedDataSize) {
std::vector<Tag::Generic*> contents;
ErrorOr<std::vector<Tag::Generic*>> returnValue;
// get contained data length by reading it manually because
// the function that does it normally can't deal with
// headerless tags
@ -1183,6 +1184,8 @@ namespace NBT {
// add one byte to position to skip the type byte
ErrorOr<int32_t> elementCount = Helper::readInt32(data, dataSize, initialPosition+1);
if (elementCount.isError) {
// this is before the creation of any pointers so we can just return
// without using the returnError label at the end of this function
return ErrorOr<std::vector<Tag::Generic*>>(true, elementCount.errorCode);
}
@ -1202,14 +1205,10 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<int8_t> nextInt = Helper::readInt8(data, dataSize, initialPosition+*processedDataSize);
if (nextInt.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextInt.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextInt.errorCode);
goto returnError;
}
contents.push_back(new Tag::Int8("", nextInt.value));
// The below code would produce a warning on GCC and Clang
// about the computed value not being used. While this does
// apply inside this function, it is ultimately not true
// as the pointer is used both inside and outside of the
// function.
*processedDataSize += 1;
}
break;
@ -1218,7 +1217,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<int16_t> nextInt = Helper::readInt16(data, dataSize, initialPosition+*processedDataSize);
if (nextInt.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextInt.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextInt.errorCode);
goto returnError;
}
contents.push_back(new Tag::Int16("", nextInt.value));
*processedDataSize += 2;
@ -1229,7 +1229,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<int32_t> nextInt = Helper::readInt32(data, dataSize, initialPosition+*processedDataSize);
if (nextInt.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextInt.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextInt.errorCode);
goto returnError;
}
contents.push_back(new Tag::Int32("", nextInt.value));
*processedDataSize += 4;
@ -1240,7 +1241,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<float> nextFloat = Helper::readFloat(data, dataSize, initialPosition+*processedDataSize);
if (nextFloat.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextFloat.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextFloat.errorCode);
goto returnError;
}
contents.push_back(new Tag::Float("", nextFloat.value));
*processedDataSize += 4;
@ -1251,7 +1253,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<int64_t> nextInt = Helper::readInt64(data, dataSize, initialPosition+*processedDataSize);
if (nextInt.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextInt.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextInt.errorCode);
goto returnError;
}
contents.push_back(new Tag::Int64("", nextInt.value));
*processedDataSize += 8;
@ -1262,7 +1265,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<double> nextDouble = Helper::readDouble(data, dataSize, initialPosition+*processedDataSize);
if (nextDouble.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextDouble.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextDouble.errorCode);
goto returnError;
}
contents.push_back(new Tag::Double("", nextDouble.value));
*processedDataSize += 8;
@ -1273,7 +1277,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<std::vector<int8_t>> nextArray = Helper::readInt8Array(data, dataSize, initialPosition+*processedDataSize);
if (nextArray.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextArray.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextArray.errorCode);
goto returnError;
}
contents.push_back(new Tag::Int8Array("", nextArray.value));
*processedDataSize += (uint64_t) nextArray.value.size();
@ -1284,7 +1289,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<tiny_utf8::string> nextString = Helper::readString(data, dataSize, initialPosition+*processedDataSize);
if (nextString.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextString.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextString.errorCode);
goto returnError;
}
contents.push_back(new Tag::String("", nextString.value));
// this cannot be an error because it just got read
@ -1301,7 +1307,8 @@ namespace NBT {
ErrorOr<std::vector<Tag::Generic*>> nextListContents = deserializeRawListContents(data, dataSize, initialPosition+*processedDataSize, containedDataSize);
if (nextListContents.isError) {
delete containedDataSize;
return ErrorOr<std::vector<Tag::Generic*>>(true, nextListContents.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextListContents.errorCode);
goto returnError;
}
contents.push_back(new Tag::List("", nextListContents.value));
*processedDataSize += *containedDataSize;
@ -1316,7 +1323,8 @@ namespace NBT {
ErrorOr<std::vector<Tag::Generic*>> nextCompoundData = deserialize(data, dataSize, initialPosition+*processedDataSize, containedDataSize);
if (nextCompoundData.isError) {
delete containedDataSize;
return ErrorOr<std::vector<Tag::Generic*>>(true, nextCompoundData.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextCompoundData.errorCode);
goto returnError;
}
contents.push_back(new Tag::Compound("", nextCompoundData.value));
*processedDataSize += *containedDataSize;
@ -1328,7 +1336,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<std::vector<int32_t>> nextArray = Helper::readInt32Array(data, dataSize, initialPosition+*processedDataSize);
if (nextArray.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextArray.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextArray.errorCode);
goto returnError;
}
contents.push_back(new Tag::Int32Array("", nextArray.value));
*processedDataSize += (uint64_t) nextArray.value.size() * 4;
@ -1339,7 +1348,8 @@ namespace NBT {
for (int32_t i=0; i<elementCount.value; i++) {
ErrorOr<std::vector<int64_t>> nextArray = Helper::readInt64Array(data, dataSize, initialPosition+*processedDataSize);
if (nextArray.isError) {
return ErrorOr<std::vector<Tag::Generic*>>(true, nextArray.errorCode);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, nextArray.errorCode);
goto returnError;
}
contents.push_back(new Tag::Int64Array("", nextArray.value));
*processedDataSize += (uint64_t) nextArray.value.size() * 8;
@ -1347,9 +1357,16 @@ namespace NBT {
break;
}
default:
return ErrorOr<std::vector<Tag::Generic*>>(true, ErrorCodes::INVALID_TYPE);
returnValue = ErrorOr<std::vector<Tag::Generic*>>(true, ErrorCodes::INVALID_TYPE);
goto returnError;
}
return ErrorOr<std::vector<Tag::Generic*>>(contents);
returnError:
for (uint64_t i=0; i<contents.size(); i++) {
delete contents.at(i);
}
return returnValue;
}
// comment about blindly passing up error codes applies here

292
src/tools/hexnet.cpp
View File

@ -1,5 +1,8 @@
//Copyright 2022, FOSS-VG Developers and Contributers
//
// Author(s):
// BodgeMaster, Shwoomple
//
//This program is free software: you can redistribute it and/or modify it
//under the terms of the GNU Affero General Public License as published
//by the Free Software Foundation, version 3.
@ -13,200 +16,55 @@
//version 3 along with this program.
//If not, see https://www.gnu.org/licenses/agpl-3.0.en.html
#include <iostream>
#include <iomanip>
#include <string>
#include <cstdint>
#include <cctype>
#include <sockpp/tcp_acceptor.h>
#include <sockpp/tcp6_acceptor.h>
#include <sockpp/udp_socket.h>
#include <sockpp/udp6_socket.h>
#include <thread>
#include <mutex>
#include <csignal>
#include <iostream>
#include <mutex>
#include <thread>
#include <vector>
#include "../lib/error.hpp"
#include "../lib/cli.hpp"
#include "../lib/error.hpp"
#define EXIT_SUCCESS 0
#define EXIT_RUNTIME 1
#define EXIT_USAGE 2
#define EXIT_UNIMPLEMENTED 3
bool ipv4 = true;
bool ipv6 = true;
bool tcp = true;
bool udp = true;
bool listenMode = false;
int64_t mtu = 1500;
std::string host;
in_port_t port;
sockpp::tcp_socket* tcpSocket;
sockpp::tcp6_socket* tcp6Socket;
sockpp::udp_socket* udpSocket;
sockpp::tcp_acceptor tcpAcceptor;
sockpp::tcp6_acceptor tcp6Acceptor;
std::mutex tcpSocketMutex;
std::mutex tcp6SocketMutex;
std::mutex udpSocketMutex;
std::mutex udp6SocketMutex;
std::mutex consoleMutex;
// used for coordinated graceful exit across threads
bool exitProgram = false;
std::mutex mutexStdin;
std::mutex mutexStdout;
std::mutex mutexNetIncoming;
std::mutex mutexNetOutgoing;
bool ipv4 = false;
bool ipv6 = false;
bool tcp = false;
bool udp = false;
void signalHandler(int signal) {
exitProgram = true;
// if still waiting for incoming connection, stop waiting
tcpAcceptor.shutdown();
tcp6Acceptor.shutdown();
// tell sockpp to close TCP socket if open because it blocks when trying
// to read and there is no data
if (tcpSocket != nullptr && *tcpSocket) {
// Intentionally not using the mutex here
std::cout << "test\n";
tcpSocket->shutdown(SHUT_RD);
}
if (tcp6Socket != nullptr && *tcp6Socket) {
// Intentionally not using the mutex here
tcp6Socket->shutdown(SHUT_RD);
}
//TODO: figure out if - and how - this applies to UDP
// Priority is to finish up all unfinished business that can be finished up.
// If something has the console mutex locked, that should not prevent
// other threads from winding down. This is why logging happens last.
consoleMutex.lock();
// shut down gracefully
std::cerr << "Received signal " << signal << ", shutting down." << std::endl;
consoleMutex.unlock();
std::exit(signal);
}
void readFromConsole(){
while(!exitProgram){
char * test = new char[420];
consoleMutex.lock();
std::cout << "> ";
std::cin.read(test, 1);
consoleMutex.unlock();
}
}
void readFromTCPSocket(sockpp::tcp_socket* socket, int64_t mtu) {
ssize_t numBytes;
uint8_t buffer[mtu];
tcpSocketMutex.lock();
while (!exitProgram && (numBytes = socket->read(buffer, sizeof(buffer))) > 0) {
tcpSocketMutex.unlock();
consoleMutex.lock();
std::cout << "\n";
for (ssize_t i=0; i<numBytes; i++) {
std::cout << std::hex << std::setfill('0') << std::setw(2) << (short) buffer[i];
}
std::cout << "\n";
std::cout.flush();
consoleMutex.unlock();
tcpSocketMutex.lock();
}
tcpSocketMutex.unlock();
consoleMutex.lock();
std::cerr << std::endl << "Connection closed." << std::endl;
consoleMutex.unlock();
}
void readFromTCP6Socket(sockpp::tcp6_socket* socket, int64_t mtu){
ssize_t numBytes;
uint8_t buffer[mtu];
tcp6SocketMutex.lock();
while (!exitProgram && (numBytes = socket->read(buffer, sizeof(buffer))) > 0) {
tcp6SocketMutex.unlock();
consoleMutex.lock();
for (ssize_t i=0; i<numBytes; i++) {
std::cout << std::hex << std::setfill('0') << std::setw(2) << (short) buffer[i];
}
std::cout.flush();
consoleMutex.unlock();
tcp6SocketMutex.lock();
}
tcp6SocketMutex.unlock();
consoleMutex.lock();
std::cerr << std::endl << "Connection closed." << std::endl;
consoleMutex.unlock();
}
void readFromUDPSocket(sockpp::udp_socket* socket, int64_t mtu){
ssize_t numBytes;
uint8_t buffer[mtu];
typename sockpp::udp_socket::addr_t srcAddr;
udpSocketMutex.lock();
while(!exitProgram && (numBytes = socket->recv_from(buffer, sizeof(buffer), &srcAddr) > 0)){
udpSocketMutex.unlock();
consoleMutex.lock();
for(ssize_t i=0; i<numBytes; i++){
std::cout << std::hex << std::setfill('0') << std::setw(2) << (short) buffer[i];
}
std::cout.flush();
consoleMutex.unlock();
udpSocketMutex.lock();
}
udpSocketMutex.unlock();
consoleMutex.lock();
std::cerr << std::endl << "Connection closed." << std::endl;
consoleMutex.unlock();
}
void writeToTCPSocket(sockpp::tcp_socket* socket){
while (!exitProgram) {
//TODO: Implement locking/unlocking/threading shenanigans
}
consoleMutex.lock();
std::cerr << std::endl << "Connection closed." << std::endl;
consoleMutex.unlock();
}
void writeToTCP6Socket(sockpp::tcp6_socket* socket){
while (!exitProgram) {
//TODO: Implement locking/unlocking/threading shenanigans
}
consoleMutex.lock();
std::cerr << std::endl << "Connection closed." << std::endl;
consoleMutex.unlock();
}
int main(int argc, char* argv[]) {
sockpp::socket_initializer socketInitializer;
std::signal(SIGINT, signalHandler);
std::signal(SIGTERM, signalHandler);
std::vector<CLI::Flag> flags;
flags.push_back(CLI::Flag('4', "ipv4", "use IPv4, defaults to both when -4 and -6 are omitted, otherwise uses what is specified"));
flags.push_back(CLI::Flag('6', "ipv6", "use IPv6, defaults to both when -4 and -6 are omitted, otherwise uses what is specified"));
flags.push_back(CLI::Flag('t', "tcp", "use TCP, defaults to both when -t and -u are omitted, otherwise uses what is specified"));
flags.push_back(CLI::Flag('u', "udp", "use UDP, defaults to both when -t and -u are omitted, otherwise uses what is specified"));
flags.push_back(CLI::Flag('n', "no-color", "disable coloring the output (intended for terminals that don't work well with color escape sequences)"));
flags.push_back(CLI::Flag('e', "echo-back", "echo input back to stdout"));
flags.push_back(CLI::Flag('4', "ipv4", "use IPv4, either this or IPv6 has to be specified"));
flags.push_back(CLI::Flag('6', "ipv6", "use IPv6, either this or IPv4 has to be specified"));
flags.push_back(CLI::Flag('t', "tcp", "use TCP, either this or UDP has to be specified"));
flags.push_back(CLI::Flag('u', "udp", "use UDP, either this or TCP has to be specified"));
flags.push_back(CLI::Flag('h', "help", "print this information and exit"));
flags.push_back(CLI::Flag('l', "license", "print license information and exit"));
std::vector<CLI::Option> options;
options.push_back(CLI::Option('c', "connect", "HOST", "connect to HOST, listen for incoming connections if omitted"));
options.push_back(CLI::Option('m', "mtu-optimize", "MTU", "Optimize for a specific maximum transfer unit by reading MTU bytes at a time."));
options.push_back(CLI::Option(
'p', "print-prefixes", "TCPin:UDPin:TCPout:UDPout",
"override default prefixes for output (defaults to spaces + coloring the output or \"t:u:T:U\" in no-color mode)"
));
options.push_back(CLI::Option(
'i', "input-prefixes", "TCP:UDP",
"override default prefixes for input (defaults to \"t:u\")"
));
options.push_back(CLI::Option('c', "connect", "HOST", "make an outgoing connection to HOST instead of listening for an incoming connection"));
std::vector<CLI::Argument> arguments;
arguments.push_back(CLI::Argument("PORT", "the port to use"));
arguments.push_back(CLI::Argument("PORT", "the port to lsiten on (or connect to)"));
CLI::ArgumentsParser cliParser = CLI::ArgumentsParser(argc, argv, flags, options, arguments, "Arbitrary tcp/udp connections in hex format.");
CLI::ArgumentsParser cliParser = CLI::ArgumentsParser(argc, argv, flags, options, arguments, "Arbitrary TCP/UDP connections in hex format");
if (cliParser.getFlag("help").value) {
std::cout << cliParser.getUsage() << std::endl;
@ -233,110 +91,18 @@ int main(int argc, char* argv[]){
<< std::endl;
return EXIT_SUCCESS;
}
if (cliParser.wrongUsage) {
std::cout << cliParser.getUsage() << std::endl;
return EXIT_USAGE;
}
if (cliParser.getFlag("ipv4").value || cliParser.getFlag("ipv6").value) {
ipv4 = cliParser.getFlag("ipv4").value;
ipv6 = cliParser.getFlag("ipv6").value;
}
if (cliParser.getFlag("tcp").value || cliParser.getFlag("udp").value) {
tcp = cliParser.getFlag("tcp").value;
udp = cliParser.getFlag("udp").value;
}
if (cliParser.getOption('c').errorCode == ErrorCodes::NOT_PRESENT) {
listenMode = true;
}
if (cliParser.getOption("mtu-optimize").errorCode == ErrorCodes::SUCCESS) {
mtu = std::stol(cliParser.getOption("mtu-optimize").value);
}
host = cliParser.getOption("connect").value;
//FIXME: use a function that returns a fixed-width data type instead,
// ensure that the given value is a valid port
port = (in_port_t) std::stoi(cliParser.getArgument(0).value);
if (listenMode) {
if (udp && ipv4) {
std::cerr << "Listening on port " << port << "." << std::endl;
if(!udpSocket->bind(sockpp::inet_address("localhost", port))){
std::cerr << "Error while binding UDP socket: " << udpSocket->last_error_str() << std::endl;
return EXIT_RUNTIME;
}
std::thread threadReadFromUDP = std::thread(readFromUDPSocket, udpSocket, mtu);
threadReadFromUDP.join();
delete udpSocket;
return EXIT_SUCCESS;
}
if (ipv6) {
std::cerr << "Listening on port " << port << "." << std::endl;
tcp6Acceptor = sockpp::tcp6_acceptor(port);
if(!tcp6Acceptor){
std::cerr << "Error while creating TCP6 acceptor: " << tcp6Acceptor.last_error_str() << std::endl;
return EXIT_RUNTIME;
}
sockpp::inet6_address peer;
tcp6Socket = new sockpp::tcp6_socket();
*tcp6Socket = tcp6Acceptor.accept(&peer);
std::cerr << "Incoming connection from " << peer << std::endl;
if (!(*tcp6Socket)) {
std::cerr << "Error on incoming connection: " << tcp6Acceptor.last_error_str() << std::endl;
delete tcp6Socket;
return EXIT_RUNTIME;
}
std::thread threadReadFromTCP6 = std::thread(readFromTCP6Socket, tcp6Socket, mtu);
threadReadFromTCP6.join();
delete tcp6Socket;
return EXIT_SUCCESS;
}
if(ipv4){
std::cerr << "Listening on port " << port << "." << std::endl;
tcpAcceptor = sockpp::tcp_acceptor(port);
if (!tcpAcceptor) {
std::cerr << "Error while creating TCP acceptor: " << tcpAcceptor.last_error_str() << std::endl;
return EXIT_RUNTIME;
}
sockpp::inet_address peer;
tcpSocket = new sockpp::tcp_socket();
*tcpSocket = tcpAcceptor.accept(&peer);
std::cerr << "Incoming connection from " << peer << std::endl;
if (!(*tcpSocket)) {
std::cerr << "Error on incoming connection: " << tcpAcceptor.last_error_str() << std::endl;
delete tcpSocket;
return EXIT_RUNTIME;
}
std::thread threadReadFromTCP = std::thread(readFromTCPSocket, tcpSocket, mtu);
std::thread threadReadFromConsole = std::thread(readFromConsole);
threadReadFromConsole.join();
threadReadFromTCP.join();
delete tcpSocket;
return EXIT_SUCCESS;
}
} else {
std::cerr << "Client mode is not implemented yet." << std::endl;
return EXIT_UNIMPLEMENTED;
if (!(ipv4 || ipv6) || !(tcp || udp)) {
std::cout << cliParser.getUsage() << std::endl;
return EXIT_USAGE;
}
}