Merge pull request #14 from LayerXcom/feature/crosschain-atomic-swap-…

…cordapp

feature/crosschain atomic swap cordapp

atomic-swap-ethereum-env/.eslintrc.json

@@ -0,0 +1,56 @@
+{
+  "extends" : [
+    "standard",
+    "plugin:promise/recommended"
+  ],
+  "plugins": [
+    "mocha-no-only",
+    "promise"
+  ],
+  "env": {
+    "node"    : true,
+    "mocha"   : true
+  },
+  "globals" : {
+    "artifacts": false,
+    "contract": false,
+    "assert": false,
+    "web3": false
+  },
+  "rules": {
+
+    // Strict mode
+    "strict": ["error", "global"],
+
+    // Code style
+    "camelcase": ["error", {"properties": "always"}],
+    "comma-dangle": ["error", "always-multiline"],
+    "comma-spacing": ["error", {"before": false, "after": true}],
+    "dot-notation": ["error", {"allowKeywords": true, "allowPattern": ""}],
+    "eol-last": ["error", "always"],
+    "eqeqeq": ["error", "smart"],
+    "generator-star-spacing": ["error", "before"],
+    "indent": ["error", 2],
+    "linebreak-style": ["error", "unix"],
+    "max-len": ["error", 170, 2],
+    "no-debugger": "off",
+    "no-dupe-args": "error",
+    "no-dupe-keys": "error",
+    "no-mixed-spaces-and-tabs": ["error", "smart-tabs"],
+    "no-redeclare": ["error", {"builtinGlobals": true}],
+    "no-trailing-spaces": ["error", { "skipBlankLines": false }],
+    "no-undef": "error",
+    "no-use-before-define": "off",
+    "no-var": "error",
+    "object-curly-spacing": ["error", "always"],
+    "prefer-const": "error",
+    "quotes": ["error", "single"],
+    "semi": ["error", "always"],
+    "space-before-function-paren": ["error", "always"],
+
+    "mocha-no-only/mocha-no-only": ["error"],
+
+    "promise/always-return": "off",
+    "promise/avoid-new": "off"
+  }
+}

atomic-swap-ethereum-env/.gitignore

@@ -0,0 +1,2 @@
+node_modules
+build

atomic-swap-ethereum-env/.solhint.json

@@ -0,0 +1,6 @@
+{
+  "extends": "solhint:default",
+  "rules": {
+    "max-line-length": ["error", 150]
+  }
+}

atomic-swap-ethereum-env/README.md

@@ -0,0 +1,67 @@
+# Atomic Swap Ethereum Environment
+This manages ethereum environments for [Cross-Chain Atomic Swap Cordapp](../cross-chain-atomic-swap-cordapp).
+You can deploy the [Settlement](contracts/Settlement.sol) contract.
+
+## Dependencies
+- Node.js v12 (Required)
+- yarn (Optional but recommended)
+
+## Usage
+Install npm dependencies
+```
+yarn
+```
+
+Run local ethereum network
+```
+yarn network
+```
+
+Deploy SimpleStorage smart contract
+```
+yarn truffle migrate --network local
+```
+
+### Ethereum addresses and private keys
+**DO NOT USE IN PRODUCTION**
+
+```
+Available Accounts
+==================
+(0) 0x90F8bf6A479f320ead074411a4B0e7944Ea8c9C1 (100 ETH) Participant C (Security Issuer)
+(1) 0xFFcf8FDEE72ac11b5c542428B35EEF5769C409f0 (100 ETH) Participant A
+(2) 0x22d491Bde2303f2f43325b2108D26f1eAbA1e32b (100 ETH) Participant B
+(3) 0xE11BA2b4D45Eaed5996Cd0823791E0C93114882d (100 ETH) Notary
+(4) 0xd03ea8624C8C5987235048901fB614fDcA89b117 (100 ETH)
+(5) 0x95cED938F7991cd0dFcb48F0a06a40FA1aF46EBC (100 ETH)
+(6) 0x3E5e9111Ae8eB78Fe1CC3bb8915d5D461F3Ef9A9 (100 ETH)
+(7) 0x28a8746e75304c0780E011BEd21C72cD78cd535E (100 ETH)
+(8) 0xACa94ef8bD5ffEE41947b4585a84BdA5a3d3DA6E (100 ETH)
+(9) 0x1dF62f291b2E969fB0849d99D9Ce41e2F137006e (100 ETH)
+
+Private Keys
+==================
+(0) 0x4f3edf983ac636a65a842ce7c78d9aa706d3b113bce9c46f30d7d21715b23b1d Participant C (Security Issuer)
+(1) 0x6cbed15c793ce57650b9877cf6fa156fbef513c4e6134f022a85b1ffdd59b2a1 Participant A
+(2) 0x6370fd033278c143179d81c5526140625662b8daa446c22ee2d73db3707e620c Participant B
+(3) 0x646f1ce2fdad0e6deeeb5c7e8e5543bdde65e86029e2fd9fc169899c440a7913 Notary
+(4) 0xadd53f9a7e588d003326d1cbf9e4a43c061aadd9bc938c843a79e7b4fd2ad743
+(5) 0x395df67f0c2d2d9fe1ad08d1bc8b6627011959b79c53d7dd6a3536a33ab8a4fd
+(6) 0xe485d098507f54e7733a205420dfddbe58db035fa577fc294ebd14db90767a52
+(7) 0xa453611d9419d0e56f499079478fd72c37b251a94bfde4d19872c44cf65386e3
+(8) 0x829e924fdf021ba3dbbc4225edfece9aca04b929d6e75613329ca6f1d31c0bb4
+(9) 0xb0057716d5917badaf911b193b12b910811c1497b5bada8d7711f758981c3773
+```
+
+### Truffle console
+Log in to truffle console
+```
+yarn truffle console --network local
+```
+
+Get ether balances
+```
+web3.eth.getBalance('0xFFcf8FDEE72ac11b5c542428B35EEF5769C409f0') // Participant A
+web3.eth.getBalance('0x22d491Bde2303f2f43325b2108D26f1eAbA1e32b') // Participant B
+web3.eth.getBalance(Settlement.address) // Settlement contract
+```

atomic-swap-ethereum-env/contracts/Migrations.sol

@@ -0,0 +1,19 @@
+pragma solidity >=0.4.21 <0.7.0;
+
+
+contract Migrations {
+  address public owner;
+  uint256 public last_completed_migration;
+
+  constructor() public {
+    owner = msg.sender;
+  }
+
+  modifier restricted() {
+    if (msg.sender == owner) _;
+  }
+
+  function setCompleted(uint256 completed) public restricted {
+    last_completed_migration = completed;
+  }
+}

atomic-swap-ethereum-env/contracts/Settlement.sol

@@ -0,0 +1,94 @@
+pragma solidity >=0.4.21 <0.7.0;
+pragma experimental ABIEncoderV2;
+
+import "openzeppelin-solidity/contracts/ownership/Ownable.sol";
+
+contract Settlement is Ownable {
+  enum SwapStatus {
+    Nonexistent,
+    Locked,
+    Unlocked
+  }
+
+  struct SwapDetail {
+    address payable transferFromAddress;
+    address payable transferToAddress;
+    uint256 weiAmount;
+    uint256 securityAmount;
+    SwapStatus status;
+  }
+
+  address cordaNotary;
+  mapping(string => SwapDetail) public swapIdToDetailMap;
+  uint256 settlementId;
+
+  event Locked(
+    uint256 settlementId,
+    string swapId,
+    bytes encodedSwapDetail
+  );
+
+  event Unlocked(
+    uint256 settlementId,
+    string swapId,
+    bytes encodedSwapDetail
+  );
+
+  constructor(address _cordaNotary) public {
+    cordaNotary = _cordaNotary;
+    settlementId = 1;
+  }
+
+  modifier onlyCordaNotary {
+    require(msg.sender == cordaNotary, "caller is not the corda notary");
+    _;
+  }
+
+  function lock(
+    string memory _swapId,
+    address payable _transferFromAddress,
+    address payable _transferToAddress,
+    uint256 _weiAmount,
+    uint256 _securityAmount
+  ) public payable {
+    require(msg.sender == _transferFromAddress, "msg.sender is not _transferFromAddress");
+    require(msg.value == _weiAmount, "msg.value is not equivalent to _weiAmount");
+
+    SwapDetail storage swapDetail = swapIdToDetailMap[_swapId];
+    swapDetail.transferFromAddress = _transferFromAddress;
+    swapDetail.transferToAddress = _transferToAddress;
+    swapDetail.weiAmount = _weiAmount;
+    swapDetail.securityAmount = _securityAmount;
+    swapDetail.status = SwapStatus.Locked;
+
+    bytes memory encodedSwapDetail = abi.encode(swapDetail);
+
+    emit Locked(
+      settlementId++,
+      _swapId,
+      encodedSwapDetail
+    );
+  }
+
+  function unlock(
+    string memory _swapId
+  ) public onlyCordaNotary {
+    SwapDetail storage swapDetail = swapIdToDetailMap[_swapId];
+
+    require(swapDetail.status != SwapStatus.Nonexistent, "swapDetail does not exist");
+    require(swapDetail.status == SwapStatus.Locked, "swapDetail.status is not Locked");
+
+    // Try sending wei to targetAddress.
+    require(swapDetail.transferToAddress.send(swapDetail.weiAmount));
+
+    swapDetail.status = SwapStatus.Unlocked;
+
+    bytes memory encodedSwapDetail = abi.encode(swapDetail);
+
+    emit Unlocked(
+      settlementId++,
+      _swapId,
+      encodedSwapDetail
+    );
+  }
+}

atomic-swap-ethereum-env/migrations/1_initial_migration.js

@@ -0,0 +1,5 @@
+const Migrations = artifacts.require('Migrations');
+
+module.exports = deployer => {
+  deployer.deploy(Migrations);
+};

atomic-swap-ethereum-env/migrations/2_settlement.js

@@ -0,0 +1,6 @@
+const Settlement = artifacts.require('Settlement');
+
+module.exports = async (deployer, network, accounts) => {
+  const notaryAddress = accounts[3];
+  await deployer.deploy(Settlement, notaryAddress);
+};

atomic-swap-ethereum-env/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "atomic-swap-ethereum-env",
+  "version": "0.1.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "truffle test",
+    "network": "ganache-cli -i 5777 -b 1 -l 100000000 -m 'myth like bonus scare over problem client lizard pioneer submit female collect'",
+    "lint": "yarn lint:sol && yarn lint:js",
+    "lint:sol": "solhint --max-warnings 0 \"contracts/**/*.sol\"",
+    "lint:js": "eslint migrations/*.js test/**/*.js scripts/*.js",
+    "format": "yarn format:sol && yarn format:js",
+    "format:sol": "prettier --write **/*.sol",
+    "format:js": "eslint migrations/*.js test/**/*.js scripts/*.js --fix"
+  },
+  "author": "LayerX Inc.",
+  "license": "Apache-2.0",
+  "dependencies": {
+    "openzeppelin-solidity": "2.3.0",
+    "ganache-cli": "^6.9.1",
+    "truffle": "^5.1.14"
+  },
+  "devDependencies": {
+    "chai": "^4.2.0",
+    "chai-bn": "^0.2.0",
+    "eslint": "^6.8.0",
+    "eslint-config-standard": "^14.1.0",
+    "eslint-plugin-import": "^2.20.1",
+    "eslint-plugin-mocha-no-only": "^1.1.0",
+    "eslint-plugin-node": "^11.0.0",
+    "eslint-plugin-promise": "^4.2.1",
+    "eslint-plugin-standard": "^4.0.1",
+    "prettier-plugin-solidity": "^1.0.0-alpha.44",
+    "solhint": "^3.0.0-rc.5",
+    "truffle-assertions": "^0.9.2"
+  }
+}

atomic-swap-ethereum-env/scripts/getContractAddressAndCode.js

@@ -0,0 +1,10 @@
+const Settlement = artifacts.require('Settlement');
+
+module.exports = async done => {
+  const settlement = await Settlement.deployed();
+  const address = settlement.address;
+  const code = await web3.eth.getCode(address);
+  console.log(address);
+  console.log(code);
+  done();
+};