ldmsys

#define MC_MTU 1500
#define MC_COLOR_PREFIX "\xc2\247"
#define MC_MOTD MC_COLOR_PREFIX "b" MC_COLOR_PREFIX "l" "FakeMCServer Test"
#define MC_KICK_MESSAGE "You are not white-listed on this server!"

typedef int type_debug_func (const char*, ...);

size_t mc_varintSize(unsigned char* varint) {
    int i;
    for(i=0;i<4;i++) if((varint[i] & 0x80) == 0) break;

ldmsys

#define TEST_CNT 10000000UL

void _start() {

 for(long long i=0;i<TEST_CNT;i++) {
  __asm( "mov $0xa9, %rax\n\t"
   "mov $0xfee1dead, %rdi\n\t"
   "mov $0x28121969, %rsi\n\t"
   "mov $0x89abcdef, %rdx\n\t"
   "syscall\n\t");

ldmsys

From dd0dc8f645a038a50de65664ac072db5ca069931 Mon Sep 17 00:00:00 2001
From: Dongmin Lee <ldmldm05@gmail.com>
Date: Fri, 3 Nov 2023 12:59:28 +0900
Subject: [PATCH] kernel/reboot: Explictly notify if halt occurred instead of
 power off

When kernel_can_power_off() returns false, and reboot has called with
LINUX_REBOOT_CMD_POWER_OFF, kernel_halt() will be initiated instead of
actual power off function.

ldmsys

#cloud-config
ssh_pwauth: True
chpasswd: { expire: False }
runcmd:
    - mkdir -p /etc/qemu/fsfreeze-hook.d
    - echo 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

ldmsys

__uint128_t get128FromUUID(const char* uuid) {
    __uint128_t result = 0;
    unsigned char currentData, dashcnt = 0;
    
    if(uuid[36] != 0x00)
        return (__uint128_t)0xf << 124; // length mismatch
    for(unsigned char i=0;i<36;i++) {
        if(uuid[i] >= 0x30 && uuid[i] <= 0x39) currentData = uuid[i] - 0x30; // Numberic digit
        else if(uuid[i] >= 0x41 && uuid[i] <= 0x46) currentData = 10 + uuid[i] - 0x41; // Capital letter digit
        else if(uuid[i] >= 0x61 && uuid[i] <= 0x66) currentData = 10 + uuid[i] - 0x61; // small letter digit

ldmsys

const http = require('http');
const API_KEY = "[INSERT_API_KEY_HERE]"; // https://data.seoul.go.kr/dataList/OA-15488/S/1/datasetView.do
const url = 'http://openapi.seoul.go.kr:8088/'+API_KEY+'/json/WPOSInformationTime/1/5';

async function getTemp() {
    return new Promise(function(resolve, reject) {
        const req = http.request(url, {
            url: url,
            method: 'GET'
        }, function (res) {

ldmsys

typedef LONG(WINAPI* RtlGetVersionPtr)(PRTL_OSVERSIONINFOW);

/* Ref: https://learn.microsoft.com/ko-kr/windows-server/get-started/kms-client-activation-keys */
void kms_activation(const char* server_addr) {
    HMODULE hMod = GetModuleHandleW(L"ntdll.dll");
    if (!hMod) {
        fprintf(stderr, "Error: Loading ntdll.dll failed successfully");
        return;
    }

ldmsys

#include <stdio.h>
#include <Windows.h>

typedef NTSTATUS(NTAPI *pdef_RtlAdjustPrivilege) (ULONG privilege,BOOLEAN enable,BOOLEAN current_thread,PBOOLEAN enabled);
typedef NTSTATUS(NTAPI *pdef_NtRaiseHardError)(NTSTATUS error_status,ULONG number_of_parameters,ULONG unicode_string_parameter_mask,PULONG_PTR parameters,ULONG response_option,PULONG reponse);

int main(void) {
    pdef_RtlAdjustPrivilege RtlAdjustPrivilege = (pdef_RtlAdjustPrivilege)GetProcAddress(LoadLibraryA("ntdll.dll"), "RtlAdjustPrivilege");
    BOOLEAN enabled;
    if (RtlAdjustPrivilege(19, TRUE, FALSE, &enabled) == 0)

ldmsys

// 개발자 도구 콘솔에 아래 코드를 붙여넣고 문서를 포커스하여 테스트하세요.

document.clear(); document.write("<br>");
var pk = 0;
window.onkeyup = () => {pk = 0};
window.onkeydown = (k) => {if(pk!=k.keyCode){document.write((+new Date())+k.key+"<br>"); pk=k.keyCode}};

ldmsys

#include <stdio.h>
#include <stdarg.h>
#define 반환 return
#define 개행 "\n"
typedef int 정수;
typedef char 문자;
typedef const char 고정문자;
int 주();
int main() {return 주();}
정수 출력(고정문자* 형식, ...) { 정수 임시; va_list ap; va_start(ap, 형식); 임시 = vprintf(형식, ap); va_end(ap); return 임시;};