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ENSRegistryWithFallback
- Verified, Router
- ENS
- Router
Verified
The following smart contract is an extension of the ENSRegistry contract. It adds a fallback mechanism to retrieve records from an older version of the ENS contract. If a record does not exist in the current contract, it will be retrieved from the older contract. This allows for a smooth transition between versions of the ENS contract.
0x00000000000c2e074ec69a0dfb2997ba6c7d2e1e
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// File: @ensdomains/ens/contracts/ENS.sol
pragma solidity >=0.4.24;
interface ENS {
// Logged when the owner of a node assigns a new owner to a subnode.
event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);
// Logged when the owner of a node transfers ownership to a new account.
event Transfer(bytes32 indexed node, address owner);
// Logged when the resolver for a node changes.
event NewResolver(bytes32 indexed node, address resolver);
// Logged when the TTL of a node changes
event NewTTL(bytes32 indexed node, uint64 ttl);
// Logged when an operator is added or removed.
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function setRecord(bytes32 node, address owner, address resolver, uint64 ttl) external;
function setSubnodeRecord(bytes32 node, bytes32 label, address owner, address resolver, uint64 ttl) external;
function setSubnodeOwner(bytes32 node, bytes32 label, address owner) external returns(bytes32);
function setResolver(bytes32 node, address resolver) external;
function setOwner(bytes32 node, address owner) external;
function setTTL(bytes32 node, uint64 ttl) external;
function setApprovalForAll(address operator, bool approved) external;
function owner(bytes32 node) external view returns (address);
function resolver(bytes32 node) external view returns (address);
function ttl(bytes32 node) external view returns (uint64);
function recordExists(bytes32 node) external view returns (bool);
function isApprovedForAll(address owner, address operator) external view returns (bool);
}
// File: @ensdomains/ens/contracts/ENSRegistry.sol
pragma solidity ^0.5.0;
/**
* The ENS registry contract.
*/
contract ENSRegistry is ENS {
struct Record {
address owner;
address resolver;
uint64 ttl;
}
mapping (bytes32 => Record) records;
mapping (address => mapping(address => bool)) operators;
// Permits modifications only by the owner of the specified node.
modifier authorised(bytes32 node) {
address owner = records[node].owner;
require(owner == msg.sender || operators[owner][msg.sender]);
_;
}
/**
* @dev Constructs a new ENS registrar.
*/
constructor() public {
records[0x0].owner = msg.sender;
}
/**
* @dev Sets the record for a node.
* @param node The node to update.
* @param owner The address of the new owner.
* @param resolver The address of the resolver.
* @param ttl The TTL in seconds.
*/
function setRecord(bytes32 node, address owner, address resolver, uint64 ttl) external {
setOwner(node, owner);
_setResolverAndTTL(node, resolver, ttl);
}
/**
* @dev Sets the record for a subnode.
* @param node The parent node.
* @param label The hash of the label specifying the subnode.
* @param owner The address of the new owner.
* @param resolver The address of the resolver.
* @param ttl The TTL in seconds.
*/
function setSubnodeRecord(bytes32 node, bytes32 label, address owner, address resolver, uint64 ttl) external {
bytes32 subnode = setSubnodeOwner(node, label, owner);
_setResolverAndTTL(subnode, resolver, ttl);
}
/**
* @dev Transfers ownership of a node to a new address. May only be called by the current owner of the node.
* @param node The node to transfer ownership of.
* @param owner The address of the new owner.
*/
function setOwner(bytes32 node, address owner) public authorised(node) {
_setOwner(node, owner);
emit Transfer(node, owner);
}
/**
* @dev Transfers ownership of a subnode keccak256(node, label) to a new address. May only be called by the owner of the parent node.
* @param node The parent node.
* @param label The hash of the label specifying the subnode.
* @param owner The address of the new owner.
*/
function setSubnodeOwner(bytes32 node, bytes32 label, address owner) public authorised(node) returns(bytes32) {
bytes32 subnode = keccak256(abi.encodePacked(node, label));
_setOwner(subnode, owner);
emit NewOwner(node, label, owner);
return subnode;
}
/**
* @dev Sets the resolver address for the specified node.
* @param node The node to update.
* @param resolver The address of the resolver.
*/
function setResolver(bytes32 node, address resolver) public authorised(node) {
emit NewResolver(node, resolver);
records[node].resolver = resolver;
}
/**
* @dev Sets the TTL for the specified node.
* @param node The node to update.
* @param ttl The TTL in seconds.
*/
function setTTL(bytes32 node, uint64 ttl) public authorised(node) {
emit NewTTL(node, ttl);
records[node].ttl = ttl;
}
/**
* @dev Enable or disable approval for a third party ("operator") to manage
* all of `msg.sender`'s ENS records. Emits the ApprovalForAll event.
* @param operator Address to add to the set of authorized operators.
* @param approved True if the operator is approved, false to revoke approval.
*/
function setApprovalForAll(address operator, bool approved) external {
operators[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
/**
* @dev Returns the address that owns the specified node.
* @param node The specified node.
* @return address of the owner.
*/
function owner(bytes32 node) public view returns (address) {
address addr = records[node].owner;
if (addr == address(this)) {
return address(0x0);
}
return addr;
}
/**
* @dev Returns the address of the resolver for the specified node.
* @param node The specified node.
* @return address of the resolver.
*/
function resolver(bytes32 node) public view returns (address) {
return records[node].resolver;
}
/**
* @dev Returns the TTL of a node, and any records associated with it.
* @param node The specified node.
* @return ttl of the node.
*/
function ttl(bytes32 node) public view returns (uint64) {
return records[node].ttl;
}
/**
* @dev Returns whether a record has been imported to the registry.
* @param node The specified node.
* @return Bool if record exists
*/
function recordExists(bytes32 node) public view returns (bool) {
return records[node].owner != address(0x0);
}
/**
* @dev Query if an address is an authorized operator for another address.
* @param owner The address that owns the records.
* @param operator The address that acts on behalf of the owner.
* @return True if `operator` is an approved operator for `owner`, false otherwise.
*/
function isApprovedForAll(address owner, address operator) external view returns (bool) {
return operators[owner][operator];
}
function _setOwner(bytes32 node, address owner) internal {
records[node].owner = owner;
}
function _setResolverAndTTL(bytes32 node, address resolver, uint64 ttl) internal {
if(resolver != records[node].resolver) {
records[node].resolver = resolver;
emit NewResolver(node, resolver);
}
if(ttl != records[node].ttl) {
records[node].ttl = ttl;
emit NewTTL(node, ttl);
}
}
}
// File: @ensdomains/ens/contracts/ENSRegistryWithFallback.sol
pragma solidity ^0.5.0;
/**
* The ENS registry contract.
*/
contract ENSRegistryWithFallback is ENSRegistry {
ENS public old;
/**
* @dev Constructs a new ENS registrar.
*/
constructor(ENS _old) public ENSRegistry() {
old = _old;
}
/**
* @dev Returns the address of the resolver for the specified node.
* @param node The specified node.
* @return address of the resolver.
*/
function resolver(bytes32 node) public view returns (address) {
if (!recordExists(node)) {
return old.resolver(node);
}
return super.resolver(node);
}
/**
* @dev Returns the address that owns the specified node.
* @param node The specified node.
* @return address of the owner.
*/
function owner(bytes32 node) public view returns (address) {
if (!recordExists(node)) {
return old.owner(node);
}
return super.owner(node);
}
/**
* @dev Returns the TTL of a node, and any records associated with it.
* @param node The specified node.
* @return ttl of the node.
*/
function ttl(bytes32 node) public view returns (uint64) {
if (!recordExists(node)) {
return old.ttl(node);
}
return super.ttl(node);
}
function _setOwner(bytes32 node, address owner) internal {
address addr = owner;
if (addr == address(0x0)) {
addr = address(this);
}
super._setOwner(node, addr);
}
}ENSRegistryWithFallback ABI
Copied
[{"inputs":[{"internalType":"contract ENS","name":"_old","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"label","type":"bytes32"},{"indexed":false,"internalType":"address","name":"owner","type":"address"}],"name":"NewOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"address","name":"resolver","type":"address"}],"name":"NewResolver","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"uint64","name":"ttl","type":"uint64"}],"name":"NewTTL","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"address","name":"owner","type":"address"}],"name":"Transfer","type":"event"},{"constant":true,"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"old","outputs":[{"internalType":"contract ENS","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"recordExists","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"resolver","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"address","name":"owner","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"resolver","type":"address"},{"internalType":"uint64","name":"ttl","type":"uint64"}],"name":"setRecord","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"address","name":"resolver","type":"address"}],"name":"setResolver","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes32","name":"label","type":"bytes32"},{"internalType":"address","name":"owner","type":"address"}],"name":"setSubnodeOwner","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"bytes32","name":"label","type":"bytes32"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"resolver","type":"address"},{"internalType":"uint64","name":"ttl","type":"uint64"}],"name":"setSubnodeRecord","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint64","name":"ttl","type":"uint64"}],"name":"setTTL","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"ttl","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"payable":false,"stateMutability":"view","type":"function"}]ENSRegistryWithFallback Bytecode
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GasRefunder
Verified
The following smart contract is a GasRefunder contract that refunds gas costs to specified refundees. It allows the owner to set common parameters such as maximum refundee balance, extra gas margin, calldata cost, maximum gas tip, maximum gas cost, and maximum single gas usage. The contract also allows the owner to set allowed contracts and refundees, and withdraw funds.
0xe64a54e2533fd126c2e452c5fab544d80e2e4eb5
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