Initial Commit

LICENSE

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+Copyright (c) 2017 Martin Charles
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+splitter-contract
+=================
+
+An Ethereum smart contract which evenly splits all funds sent to it between a
+number of receving parties.
+
+Usage
+-----
+To use this contract, clone the repo and hardcode the addresses you would like
+to evenly split received funds between in the constructor. The contract can be
+found in [`contracts/Splitter.sol`][contract].
+
+You can deploy the contract like you would any truffle contract, by configuring
+your `./truffle.js` and running:
+
+    $ npm install
+    $ npm run truffle deploy
+
+Now, when ether is sent to the contract using a wallet or code like this:
+
+    var WEI = 1;
+    var ETHER = 10 ** 18 * WEI;
+    web3.eth.sendTransaction({to: contractAddress, value: 1 * ETHER});
+
+The incoming transaction will be split between the parties specified in the
+constructor and be available for withdrawl by calling `withdraw` or
+`withdrawAll`. Check out the [tests] for examples.
+
+Tests
+-----
+You can run test tests by running:
+
+    $ npm install
+    $ npm run testrpc
+
+    $ # in another session
+    $ npm run test
+
+[contract]: contracts/Splitter.sol
+[tests]: test/splitter.js

build/contracts/Migrations.json

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+{
+  "contract_name": "Migrations",
+  "abi": [
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "new_address",
+          "type": "address"
+        }
+      ],
+      "name": "upgrade",
+      "outputs": [],
+      "payable": false,
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "last_completed_migration",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "owner",
+      "outputs": [
+        {
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "payable": false,
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "completed",
+          "type": "uint256"
+        }
+      ],
+      "name": "setCompleted",
+      "outputs": [],
+      "payable": false,
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "payable": false,
+      "type": "constructor"
+    }
+  ],
+  "unlinked_binary": "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",
+  "networks": {
+    "1500155372674": {
+      "events": {},
+      "links": {},
+      "address": "0xe78a0f7e598cc8b0bb87894b0f60dd2a88d6a8ab",
+      "updated_at": 1500155395335
+    }
+  },
+  "schema_version": "0.0.5",
+  "updated_at": 1500155395335
+}

build/contracts/Splitter.json

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+{
+  "contract_name": "Splitter",
+  "abi": [
+    {
+      "inputs": [],
+      "payable": false,
+      "type": "constructor"
+    },
+    {
+      "payable": true,
+      "type": "fallback"
+    }
+  ],
+  "unlinked_binary": "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",
+  "networks": {
+    "1500155372674": {
+      "events": {},
+      "links": {},
+      "address": "0xcfeb869f69431e42cdb54a4f4f105c19c080a601",
+      "updated_at": 1500155395335
+    }
+  },
+  "schema_version": "0.0.5",
+  "updated_at": 1500155466662
+}

contracts/Migrations.sol

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+pragma solidity ^0.4.4;
+
+contract Migrations {
+  address public owner;
+  uint public last_completed_migration;
+
+  modifier restricted() {
+    if (msg.sender == owner) _;
+  }
+
+  function Migrations() {
+    owner = msg.sender;
+  }
+
+  function setCompleted(uint completed) restricted {
+    last_completed_migration = completed;
+  }
+
+  function upgrade(address new_address) restricted {
+    Migrations upgraded = Migrations(new_address);
+    upgraded.setCompleted(last_completed_migration);
+  }
+}

contracts/Splitter.sol

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+pragma solidity ^0.4.11;
+
+contract Splitter {
+    mapping(address => uint) public balances;
+    mapping(uint8 => address) between;
+    uint8 count;
+
+    function Splitter() {
+        count = 2;
+        between[0] = 0x0090f8bf6a479f320ead074411a4b0e7944ea8c9c1;
+        between[1] = 0x00ffcf8fdee72ac11b5c542428b35eef5769c409f0;
+    }
+
+    // To save on transaction fees, it's beneficial to withdraw in one big
+    // transaction instead of many little ones.
+    function withdraw(uint amount) {
+        uint balance = balances[msg.sender];
+        require(balance <= amount);
+
+        balances[msg.sender] -= amount;
+
+        // the gas for this transaction is paid for by msg.sender
+        msg.sender.transfer(amount);
+    }
+
+    function withdrawAll() {
+        uint balance = balances[msg.sender];
+        Splitter.withdraw(balance);
+    }
+
+    function() payable {
+        // We do integer division floor(a / b) here. There will be a maximum
+        // remainder of count wei left in the contract after all the transfers.
+
+        // TODO: properly handle the remainder, this will cause compounding
+        uint addedToEach = this.balance / count;
+
+        for (uint8 i = 0; i < count; i++) {
+            address to = between[i];
+            balances[to] += addedToEach;
+        }
+    }
+}

migrations/1_initial_migration.js

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+var Migrations = artifacts.require("./Migrations.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(Migrations);
+};

migrations/2_deploy_contracts.js

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+var Splitter = artifacts.require("./Splitter.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(Splitter);
+};