Ethereum wallet

This repository contains the golang code of a simple ethereum wallet and a RESTful API server can get information from etherscan and node.

Contents

• Feature
• Setup
• Example
• Test

Feature

• create keystore
• get address's balance(eth, erc20), transaction, nonce from node
• estimate transaction's gas limit
• get gasprice from node
• get address's transaction history(eth, erc20) from etherscan api
• send eth, erc20 from your address to another address
• sign message, sign transaction
• verify message

Setup

Setup config

config path

Environment variable: ETHEREUM_WALLET_CONFIG_PATH

if you don't set env, then default path is config.json in the current folder.

config.json

Variable

• network(not necessary): defalut network, you can choose ropsten, rinkeby or mainnet.
• ropsten, rinkeby, mainnet: network's node_url and etherscan_api_url need to be set in here, node_url is ethereum node's url, you can choose to use infura(https://infura.io/), etherscan_api_url is etherscan's developer api url.
• etherscan_api_key: etherscan's api key, you can register at etherscan(https://etherscan.io/apis)
• server_url(not necessary): server's url when use start server command, default is set in http://127.0.0.1:8080
• keyfile: keystore's path, you can create keystore from cli create command
• passphrase(not necessary): keystore's passphrase, it's a fast way to unlock keyfile, or you can input in terminal when cli need unlock wallet
• address(not necessary): default query address
• erc20_list: erc20 token's list, you need provide token's decimals, name, symbol, I put some popular erc20 token in project's erc20_list.json file, user can add token you need in config file.

Example

{
{
  "network": "ropsten",
  "ropsten":{
    "node_url": "https://ropsten.infura.io/v3/8e6b4431eedf6b",
    "etherscan_api_url": "https://api-ropsten.etherscan.io/api"
  },
  "rinkeby":{
    "node_url": "https://rinkeby.infura.io/v3/8e6b4431eedf6b",
    "etherscan_api_url": "https://api-rinkeby.etherscan.io/api"
  },
  "mainnet":{
    "node_url": "https://mainnet.infura.io/v3/8e6b4431eedf6b",
    "etherscan_api_url": "https://api.etherscan.io/api"
  },
  "server_url": "http://127.0.0.1:8080",
  "etherscan_api_key": "58CF1233f16b",
  "keyfile": "./tests/key/test",
  "passphrase": "1234",
  "address": "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B",
  "erc20_list":[
    {
      "decimals": 18,
      "name": "Weenus",
      "symbol": "Weenus",
      "address": "0x101848d5c5bbca18e6b4431eedf6b95e9adf82fa"
    }
  ]
}

Build

go build ./cmd/cli

Run

run server first

./cli server start -network ropsten

do what you want to do

./cli

Example

cli command

Server command

./cli server start -port 8080 -network ropsten

Wallet command

get keystore address

./cli wallet address -keyfile "./keystore/test"

create keystore

./cli wallet create -p ""./keystore"

sign message

./cli wallet signmessage --keyfile "./keystore/test" --msg "hello"

sign transaction

./cli wallet signtx --keyfile "./keystore/test" --transaction  "{\"nonce\":160,\"gasprice\":2000000000,\"gaslimit\":21000,\"to\":\"0xe5664b93ad268393d1f695c4180993e60c59fc3e\",\"value\":1000000000000,\"data\":\"\"}"

verifymessage

./cli wallet verifymessage -address "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B" -signature "0x61c01b1a23624f176cbc42feda9c394ce0c9c8dd80b46ab4ca3d5dfb95a4e60335ec0f8c1bcc475dfc5bdafa697b10e56c329fdf136fee4ec800898be2412d4f00" -message "hello"

Node command

get address's balance

./cli node balance -address "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B"

get address's nonce

./cli node nonce -address "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B"

get address's erc20balance

./cli node erc20balance -address "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B"

get address's txhistory

./cli node txhistory -address "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B"

get address's internaltxhistory

./cli node internaltxhistory -address "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B"

get address's erc20txhistory

./cli node erc20txhistory -address "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B"

get gasprice from node

./cli node gasprice 

get transaction's estimate gas

• The unit needs to be expressed in the form of wei

./cli node gaslimit --transaction ./cli node gaslimit -transaction "{\"from\":\"0xb60e8dd61c5d32be8058bb8eb970870f07233155\",\"to\":\"0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B\",\"gasPrice\":10000000000,\"value\":100000000}"

send raw transaction

./cli node sendrawtx -raw "0x1234"

NodeWallet wallet

send ether to other address

• The unit needs to be expressed in the form of wei

./cli nodewallet sendether -keyfile "./keystore/test" -to "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B" -value 10000000000

send erc20 to other address

./cli nodewallet senderc20 -keyfile "./keystore/test" -symbol "Weenus" -to "0x51bf0b41Ba5B034f158CF1233f16bA5450F9355B" -value 1