Upgrade migration

contracts/HumanStandardToken.sol

@@ -10,7 +10,7 @@ Machine-based, rapid creation of many tokens would not necessarily need these ex
 3) Optional approveAndCall() functionality to notify a contract if an approval() has occurred.
 
 .*/
-pragma solidity ^0.4.4;
+pragma solidity ^0.4.6;
 
 import "./StandardToken.sol";
 

contracts/HumanStandardTokenFactory.sol

@@ -0,0 +1,62 @@
+import "./HumanStandardToken.sol";
+
+pragma solidity ^0.4.6;
+
+contract HumanStandardTokenFactory {
+
+    mapping(address => address[]) public created;
+    mapping(address => bool) public isHumanToken; //verify without having to do a bytecode check.
+    bytes public humanStandardByteCode;
+
+    function HumanStandardTokenFactory() {
+      //upon creation of the factory, deploy a HumanStandardToken (parameters are meaningless) and store the bytecode provably.
+      address verifiedToken = createHumanStandardToken(10000, "Verify Token", 3, "VTX");
+      humanStandardByteCode = codeAt(verifiedToken);
+    }
+
+    //verifies if a contract that has been deployed is a Human Standard Token.
+    //NOTE: This is a very expensive function, and should only be used in an eth_call. ~800k gas
+    function verifyHumanStandardToken(address _tokenContract) returns (bool) {
+      bytes memory fetchedTokenByteCode = codeAt(_tokenContract);
+
+      if (fetchedTokenByteCode.length != humanStandardByteCode.length) {
+        return false; //clear mismatch
+      }
+
+      //starting iterating through it if lengths match
+      for (uint i = 0; i < fetchedTokenByteCode.length; i ++) {
+        if (fetchedTokenByteCode[i] != humanStandardByteCode[i]) {
+          return false;
+        }
+      }
+
+      return true;
+    }
+
+    //for now, keeping this internal. Ideally there should also be a live version of this that any contract can use, lib-style.
+    //retrieves the bytecode at a specific address.
+    function codeAt(address _addr) internal returns (bytes o_code) {
+      assembly {
+          // retrieve the size of the code, this needs assembly
+          let size := extcodesize(_addr)
+          // allocate output byte array - this could also be done without assembly
+          // by using o_code = new bytes(size)
+          o_code := mload(0x40)
+          // new "memory end" including padding
+          mstore(0x40, add(o_code, and(add(add(size, 0x20), 0x1f), not(0x1f))))
+          // store length in memory
+          mstore(o_code, size)
+          // actually retrieve the code, this needs assembly
+          extcodecopy(_addr, add(o_code, 0x20), 0, size)
+      }
+    }
+
+    function createHumanStandardToken(uint256 _initialAmount, string _name, uint8 _decimals, string _symbol) returns (address) {
+
+        HumanStandardToken newToken = (new HumanStandardToken(_initialAmount, _name, _decimals, _symbol));
+        created[msg.sender].push(address(newToken));
+        isHumanToken[address(newToken)] = true;
+        newToken.transfer(msg.sender, _initialAmount); //the factory will own the created tokens. You must transfer them.
+        return address(newToken);
+    }
+}

contracts/Migrations.sol

@@ -0,0 +1,23 @@
+pragma solidity ^0.4.6;
+
+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/StandardToken.sol

@@ -7,7 +7,7 @@ If you deploy this, you won't have anything useful.
 Implements ERC 20 Token standard: https://github.com/ethereum/EIPs/issues/20
 .*/
 
-pragma solidity ^0.4.4;
+pragma solidity ^0.4.6;
 
 import "./Token.sol";
 

contracts/Token.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.4;
+pragma solidity ^0.4.6;
 
 contract Token {
 

contracts/TokenTester.sol

@@ -0,0 +1,15 @@
+pragma solidity ^0.4.6;
+
+import "./HumanStandardTokenFactory.sol";
+
+//commented out for now as Factory > 3m gas to deploy, causing this to OOG.
+contract TokenTester {
+    address public tokenContractAddress;
+
+    /*function TokenTester() {
+        address factoryAddr = address(new HumanStandardTokenFactory());
+        HumanStandardTokenFactory tokenFactory = HumanStandardTokenFactory(factoryAddr);
+
+        tokenContractAddress = tokenFactory.createHumanStandardToken(10000, 'Simon Bucks', 1, 'SBX');
+    }*/
+}

migrations/1_initial_migration.js

@@ -0,0 +1,5 @@
+var Migrations = artifacts.require("./Migrations.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(Migrations);
+};

migrations/2_deploy_contracts.js

@@ -0,0 +1,7 @@
+var HumanStandardTokenFactory = artifacts.require("./HumanStandardTokenFactory.sol");
+var HumanStandardToken = artifacts.require("./HumanStandardToken.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(HumanStandardTokenFactory);
+  deployer.deploy(HumanStandardToken);
+};

package.json

@@ -28,6 +28,7 @@
     "reflux-tx": "0.2.4",
     "sass-loader": "^3.1.2",
     "style-loader": "^0.13.0",
+    "truffle-hdwallet-provider": "0.0.3",
     "uport-lib": "^1.3.1",
     "web3": "0.16.0",
     "webpack": "^1.12.12"