pragma solidity ^0.4.15;
contract ValidatorSet {
/// Issue this log event to signal a desired change in validator set.
/// This will not lead to a change in active validator set until
/// finalizeChange is called.
///
/// Only the last log event of any block can take effect.
/// If a signal is issued while another is being finalized it may never
/// take effect.
///
/// _parent_hash here should be the parent block hash, or the
/// signal will not be recognized.
event InitiateChange(bytes32 indexed _parent_hash, address[] _new_set);
/// Get current validator set (last enacted or initial if no changes ever made)
function getValidators() public constant returns (address[]);
/// Called when an initiated change reaches finality and is activated.
/// Only valid when msg.sender == SYSTEM (EIP96, 2**160 - 2)
///
/// Also called when the contract is first enabled for consensus. In this case,
/// the "change" finalized is the activation of the initial set.
function finalizeChange() public;
// Reporting functions: operate on current validator set.
// malicious behavior requires proof, which will vary by engine.
function reportBenign(address validator, uint256 blockNumber) public;
function reportMalicious(address validator, uint256 blockNumber, bytes proof) public;
}
contract SafeValidatorSet is ValidatorSet {
function reportBenign(address validator, uint256 blockNumber) public {}
function reportMalicious(address validator, uint256 blockNumber, bytes proof) public {}
}
contract ImmediateSet is ValidatorSet {
function finalizeChange() public {}
}
contract OuterSet is ValidatorSet {
// System address, used by the block sealer.
address constant SYSTEM_ADDRESS = 0xffffFFFfFFffffffffffffffFfFFFfffFFFfFFfE;
// `getValidators()` method signature.
bytes4 constant SIGNATURE = 0xb7ab4db5;
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event FinalizeChange(address[] netSet);
InnerSet public innerSet;
// Was the last validator change finalized.
bool public finalized;
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function OuterSet(address innerSetInitial) public {
// Set original owner here!
owner = 0xffffFFFfFFffffffffffffffFfFFFfffFFFfFFfE;
OwnershipTransferred(0, owner);
if (innerSetInitial == 0) {
innerSetInitial = 0x0000000000000000000000000000000000000006;
}
innerSet = InnerSet(innerSetInitial);
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
/**
* @dev Disallows direct send by settings a default function without the `payable` flag.
*/
function() external {
}
modifier onlySystemAndNotFinalized() {
require(msg.sender == SYSTEM_ADDRESS && !finalized);
_;
}
modifier onlyInnerAndFinalized() {
require(msg.sender == address(innerSet) && finalized);
_;
}
function setInner(address _inner) public onlyOwner {
innerSet = InnerSet(_inner);
}
// For innerSet
function initiateChange(bytes32 parentHash, address[] newSet) public onlyInnerAndFinalized {
finalized = false;
InitiateChange(parentHash, newSet);
}
// For sealer.
function finalizeChange() public onlySystemAndNotFinalized {
finalized = true;
innerSet.finalizeChange();
FinalizeChange(getValidators());
}
function getValidators() public constant returns (address[]) {
address addr = innerSet;
bytes4 sig = SIGNATURE;
assembly {
mstore(0, sig)
let ret := call(0xfffffffface8, addr, 0, 0, 4, 0, 0)
jumpi(fail,iszero(ret))
returndatacopy(0, 0, returndatasize)
fail:
return(0, returndatasize)
}
}
function reportBenign(address validator, uint256 blockNumber) public {
innerSet.reportBenign(validator, blockNumber);
}
function reportMalicious(address validator, uint256 blockNumber, bytes proof) public {
innerSet.reportMalicious(validator, blockNumber, proof);
}
}
/// Limit to 32 validators
contract InnerSet {
OuterSet public outerSet;
modifier only_outer() {
require(msg.sender == address(outerSet));
_;
}
function getValidators() public constant returns (address[]);
function finalizeChange() public;
function reportBenign(address validator, uint256 blockNumber) public;
function reportMalicious(address validator, uint256 blockNumber, bytes proof) public;
}
contract InnerSetInitial is InnerSet {
// Initial set of validator list
address[] public validatorList = [0x00D6Cc1BA9cf89BD2e58009741f4F7325BAdc0ED];
function InnerSetInitial(address outerSetAddress) public {
if (outerSetAddress == 0) {
outerSetAddress = 0x0000000000000000000000000000000000000005;
}
outerSet = OuterSet(outerSetAddress);
}
function getValidators() public constant returns (address[]) {
return validatorList;
}
function finalizeChange() public { }
function reportBenign(address validator, uint256 blockNumber) public { }
function reportMalicious(address validator, uint256 blockNumber, bytes proof) public {}
}Address 5 is the validator contract. 6 is the InnerSetInitial.
{
"name": "DemoPoA",
"engine": {
"authorityRound": {
"params": {
"stepDuration": "5",
"validators": {
"contract": "0x0000000000000000000000000000000000000005"
}
}
}
},
"params": {
"gasLimitBoundDivisor": "0x400",
"maximumExtraDataSize": "0x20",
"minGasLimit": "0x1388",
"networkID": "0x4242"
},
"genesis": {
"seal": {
"authorityRound": {
"step": "0x0",
"signature": "0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
}
},
"difficulty": "0x20000",
"gasLimit": "0x5B8D80"
},
"accounts": {
"0x0000000000000000000000000000000000000001": {
"balance": "1",
"builtin": {
"name": "ecrecover",
"pricing": {
"linear": {
"base": 3000,
"word": 0
}
}
}
},
"0x0000000000000000000000000000000000000002": {
"balance": "1",
"builtin": {
"name": "sha256",
"pricing": {
"linear": {
"base": 60,
"word": 12
}
}
}
},
"0x0000000000000000000000000000000000000003": {
"balance": "1",
"builtin": {
"name": "ripemd160",
"pricing": {
"linear": {
"base": 600,
"word": 120
}
}
}
},
"0x0000000000000000000000000000000000000004": {
"balance": "1",
"builtin": {
"name": "identity",
"pricing": {
"linear": {
"base": 15,
"word": 3
}
}
}
},
"0x0000000000000000000000000000000000000005": {
"balance": "1",
"constructor": 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},
"0x0000000000000000000000000000000000000006": {
"balance": "1",
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}
}
}
validator_one_1 | Loading config file from /config/validators.toml
validator_one_1 | 2018-01-22 09:02:23 UTC Starting Parity/v1.10.0-nightly-9083bec-20180117/x86_64-linux-gnu/rustc1.23.0
validator_one_1 | 2018-01-22 09:02:23 UTC Keys path /parity/keys/DemoPoA
validator_one_1 | 2018-01-22 09:02:23 UTC DB path /parity/chains/DemoPoA/db/eb36b7cf93c8fcef
validator_one_1 | 2018-01-22 09:02:23 UTC Path to dapps /parity/dapps
validator_one_1 | 2018-01-22 09:02:23 UTC State DB configuration: fast
validator_one_1 | 2018-01-22 09:02:23 UTC Operating mode: active
validator_one_1 | 2018-01-22 09:02:23 UTC Configured for DemoPoA using AuthorityRound engine
validator_one_1 | 2018-01-22 09:02:23 UTC Error generating genesis epoch data: Error(Msg("Cannot decode address[]"), State { next_error: Some(Error(InvalidData, State { next_error: None, backtrace: None })), backtrace: None }). Snapshots generated may not be complete.
validator_one_1 | 2018-01-22 09:02:25 UTC Encountered error on making system call: Bad instruction 3d
truffle(development)> OuterSet.deployed().then(instance => instance.getValidators())
[ '0x00d6cc1ba9cf89bd2e58009741f4f7325badc0ed' ]