Arachnid

contract UserTokenFactory {
  mapping(address=>UserToken) public userTokens;
  
  function getUserToken(address owner) returns(UserToken) {
    if(userTokens[owner] == 0) {
      UserToken token = new UserToken(owner);
      userTokens[owner] = token;
    }
    return userTokens[owner];
}

Arachnid

object "Create2Proxy" {
    code {
        let size := datasize("runtime")
        datacopy(0, dataoffset("runtime"), size)
        return(0, size)
    }
    object "runtime" {
        code {
            let salt := calldataload(0)
            let size := sub(calldatasize(), 32)

Arachnid

#import asyncio
import logging
from flask import Blueprint, Flask, request, render_template, g
from flask_graphql import GraphQLView
from google.cloud import logging as glogging
#from graphql.execution.executors.asyncio import AsyncioExecutor
from web3 import Web3, HTTPProvider
from werkzeug.serving import run_simple
from graphql import (
    graphql,

Arachnid

type Address {
  address: String
}

type Node {
  name: String
  nameHash: String
  label: String
  node: String
  subNodes: [Node]

Arachnid

// WHATEVER YOU DO, DON'T USE THIS.
// This is a bit of demo code posted to illustrate a principle. It is unaudited,
// probably full of bugs, and definintely not production ready.
// https://twitter.com/nicksdjohnson/status/1041642345467404291

import "./DumbWallet.sol";

contract DumbMultisig {
    struct MultisigConfig {
        mapping(address=>bool) signatories;

Arachnid

// WHATEVER YOU DO, DON'T USE THIS.
// This is a bit of demo code posted to illustrate a principle. It is unaudited,
// probably full of bugs, and definintely not production ready.
// https://twitter.com/nicksdjohnson/status/1041642345467404291

import "./DumbWallet.sol";

contract WalletDelegator {
    mapping(address=>uint) public nonces;

Arachnid

// WHATEVER YOU DO, DON'T USE THIS.
// This is a bit of demo code posted to illustrate a principle. It is unaudited,
// probably full of bugs, and definintely not production ready.
// https://twitter.com/nicksdjohnson/status/1041642345467404291

contract DumbWallet {
    mapping(address=>bool) public authorised;
    
    event Authorised(address indexed target, bool value);
    event Call(address indexed target, uint value);

Arachnid

import logging
import json
import sys

import mapreduce


def mapper(key, value):
    if value['event'] == 'AuctionStarted':
        yield (value['args']['hash'], {'registered': value['args']['registrationDate']})

Arachnid

/**
 * @dev OpcodeChecker processes contract code to generate a bitmap of used opcodes.
 *
 * DO NOT USE: See the vulnerability identified by Recmo below. A patch will be provided soon.
 *
 * The generated bitmap can be used to enforce whitelisting and blacklisting on contract code.
 * Bit n of the bitmap is set iff opcode n is used. For instance, the presence of the STOP opcode
 * will result in bit 0 of the bitmap being set.
 *
 * A best-effort attempt is made to skip over unreachable data, but there may be false positives.

Arachnid

import argparse
import requests
import xml.etree.ElementTree as ET

from cStringIO import StringIO
from PyPDF2 import PdfFileReader, PdfFileWriter


parser = argparse.ArgumentParser(description='Build a PDF from a set of matching RFCs')
parser.add_argument('rfc', metavar='RFC', nargs='*')