luoqeng

{
  "meta": {
    "theme": "elegant"
  },
  "basics": {
    "name": "Chris Swanda",
    "label": "DevOps Engineer at SelectQuote Insurance Services",
    "picture": "",
    "email": "chris.swanda@gmail.com",
    "summary": "A consummate, battle-tested technical professional with over 20 years of industry experience, ranging across multiple diverse disciplines - from the laboratory, to the board room. I have the innate ability discover and realize new opportunities for revenue, cost reduction and invention for internal and external stakeholders; by using uncommon knowledge, to bring forth uncommon results.",

luoqeng

DOCS:

1. https://research.kudelskisecurity.com/2017/06/07/installing-wireguard-the-modern-vpn/
2. https://gist.github.com/nealfennimore/92d571db63404e7ddfba660646ceaf0d
3. https://angristan.xyz/2019/01/how-to-setup-vpn-server-wireguard-nat-ipv6/
4. https://git.zx2c4.com/wireguard-tools/about/src/man/wg.8

NB;

• the private IP address 192.168.3.XX doesn't have to be an IP you own.
  create a new vps/ip on ua cloud provider and check IP location on https://www.whatismyip.com/ip-address-lookup

luoqeng

// Note that this is not the production code
pragma solidity 0.5.6;

import "./IERC20.sol";

contract Wallet {
    address internal token = 0x123...<hot_wallet_addr>;
    address internal hotWallet = 0x321...<hot_wallet_addr>;

    constructor() public {

luoqeng

Dockerized: V2ray + WebSocket + TLS + Web

also see: https://toutyrater.github.io/advanced/wss_and_web.html

Server side sontents:

• Caddyfile
• config.json
• docker-compose.yml

Client side contents:

luoqeng

#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <string.h>
#include "trans_packet.h"

void on_packet_recv(char* from_ip, uint16_t from_port, char* payload, int size, unsigned int seq) {
    printf("Packet received from=%s:%d, seq=%d\n", from_ip, from_port, seq);
    char* message = (char*)malloc(size);
    memcpy(message, payload, size);

luoqeng

pragma solidity ^0.4.10;

interface ERC20 {
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address spender, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);

luoqeng

by default,openwrt do not allow ssh access from wan, here are two method to change that:

1.login into your wrt from a lan host.issue the following command:
iptables -F

the command "flush away" all the firewall rules,including the one that rejects ssh request from wan.
now you can try ssh from anywhere.

aware that the firewall deactivation leads to highly security risk.and after the wrt restarts ,all default firewall configuration comes back.you hava to "flush" the rules once again.

luoqeng

Installing Emacs 24.4 on Ubuntu 14.04 without sudo privilege

Just run:

sh ./ubuntu14.04-emacs-24.4-install.sh

This will install ncurses which is dependency of emacs24.4. It may requires another dependencies depending on your environment. Note that configure options in emacs installation are for disabling GUI features.

luoqeng

#include <vector>
#include <assert.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>

typedef int32_t Score;
typedef int32_t UserId;
typedef int32_t Rank;
const Score kInvalidScore = -1;