{ "contractName": "LinearPremiumPriceOracle", "abi": [ { "inputs": [ { "internalType": "contract AggregatorInterface", "name": "_usdOracle", "type": "address" }, { "internalType": "uint256[]", "name": "_rentPrices", "type": "uint256[]" }, { "internalType": "uint256", "name": "_initialPremium", "type": "uint256" }, { "internalType": "uint256", "name": "_premiumDecreaseRate", "type": "uint256" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": false, "internalType": "address", "name": "oracle", "type": "address" } ], "name": "OracleChanged", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "internalType": "uint256[]", "name": "prices", "type": "uint256[]" } ], "name": "RentPriceChanged", "type": "event" }, { "constant": true, "inputs": [], "name": "initialPremium", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "isOwner", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "string", "name": "name", "type": "string" }, { "internalType": "uint256", "name": "expires", "type": "uint256" }, { "internalType": "uint256", "name": "duration", "type": "uint256" } ], "name": "premium", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "premiumDecreaseRate", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "string", "name": "name", "type": "string" }, { "internalType": "uint256", "name": "expires", "type": "uint256" }, { "internalType": "uint256", "name": "duration", "type": "uint256" } ], "name": "price", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [], "name": "renounceOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "name": "rentPrices", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "contract AggregatorInterface", "name": "_usdOracle", "type": "address" } ], "name": "setOracle", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "uint256[]", "name": "_rentPrices", "type": "uint256[]" } ], "name": "setPrices", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "usdOracle", "outputs": [ { "internalType": "contract AggregatorInterface", "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "uint256", "name": "expires", "type": "uint256" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "timeUntilPremium", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "bytes4", "name": "interfaceID", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.16+commit.9c3226ce\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"contract AggregatorInterface\",\"name\":\"_usdOracle\",\"type\":\"address\"},{\"internalType\":\"uint256[]\",\"name\":\"_rentPrices\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256\",\"name\":\"_initialPremium\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"_premiumDecreaseRate\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"address\",\"name\":\"oracle\",\"type\":\"address\"}],\"name\":\"OracleChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"previousOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnershipTransferred\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint256[]\",\"name\":\"prices\",\"type\":\"uint256[]\"}],\"name\":\"RentPriceChanged\",\"type\":\"event\"},{\"constant\":true,\"inputs\":[],\"name\":\"initialPremium\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"isOwner\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"string\",\"name\":\"name\",\"type\":\"string\"},{\"internalType\":\"uint256\",\"name\":\"expires\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"duration\",\"type\":\"uint256\"}],\"name\":\"premium\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"premiumDecreaseRate\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"string\",\"name\":\"name\",\"type\":\"string\"},{\"internalType\":\"uint256\",\"name\":\"expires\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"duration\",\"type\":\"uint256\"}],\"name\":\"price\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"renounceOwnership\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"rentPrices\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"contract AggregatorInterface\",\"name\":\"_usdOracle\",\"type\":\"address\"}],\"name\":\"setOracle\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"uint256[]\",\"name\":\"_rentPrices\",\"type\":\"uint256[]\"}],\"name\":\"setPrices\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceID\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"expires\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"timeUntilPremium\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"usdOracle\",\"outputs\":[{\"internalType\":\"contract AggregatorInterface\",\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{\"isOwner()\":{\"return\":\"true if `msg.sender` is the owner of the contract.\"},\"owner()\":{\"return\":\"the address of the owner.\"},\"premium(string,uint256,uint256)\":{\"details\":\"Returns the pricing premium in wei.\"},\"renounceOwnership()\":{\"details\":\"Allows the current owner to relinquish control of the contract.\"},\"setOracle(address)\":{\"details\":\"Sets the price oracle address\",\"params\":{\"_usdOracle\":\"The address of the price oracle to use.\"}},\"setPrices(uint256[])\":{\"details\":\"Sets rent prices.\",\"params\":{\"_rentPrices\":\"The price array. Each element corresponds to a specific name length; names longer than the length of the array default to the price of the last element. Values are in base price units, equal to one attodollar (1e-18 dollar) each.\"}},\"timeUntilPremium(uint256,uint256)\":{\"details\":\"Returns the timestamp at which a name with the specified expiry date will have the specified re-registration price premium.\",\"params\":{\"amount\":\"The amount, in wei, the caller is willing to pay\",\"expires\":\"The timestamp at which the name expires.\"},\"return\":\"The timestamp at which the premium for this domain will be `amount`.\"},\"transferOwnership(address)\":{\"details\":\"Allows the current owner to transfer control of the contract to a newOwner.\",\"params\":{\"newOwner\":\"The address to transfer ownership to.\"}}}},\"userdoc\":{\"methods\":{\"renounceOwnership()\":{\"notice\":\"Renouncing to ownership will leave the contract without an owner. It will not be possible to call the functions with the `onlyOwner` modifier anymore.\"}}}},\"settings\":{\"compilationTarget\":{\"/Users/makoto/work/ens/ethregistrar/contracts/LinearPremiumPriceOracle.sol\":\"LinearPremiumPriceOracle\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"/Users/makoto/work/ens/ethregistrar/contracts/LinearPremiumPriceOracle.sol\":{\"keccak256\":\"0x654aec348aae8d8579eabb1c2f92b9db4a00017ca8aa14641deb86b012ad11e8\",\"urls\":[\"bzz-raw://c28ebfc00d7cf4348849b1e6dc86c62e47b2c0b28dfc9e6ab769e7e487160f2c\",\"dweb:/ipfs/QmVkQNQQhTKkYqTQHTJvsxKqCjGa578BxYaAXHS9vJfQWh\"]},\"/Users/makoto/work/ens/ethregistrar/contracts/PriceOracle.sol\":{\"keccak256\":\"0x9e21289a1fa35c8075409acca1de56450a24a139c6c905f789cd435409468a4d\",\"urls\":[\"bzz-raw://129cad7cc78129fde500232e787b191ea5239a94a09bdc69e63fd09706f42cba\",\"dweb:/ipfs/Qmcz3WGiEMhZCpwwixdYTNk7G4rdrH7xcX2PEq1RriJqPy\"]},\"/Users/makoto/work/ens/ethregistrar/contracts/SafeMath.sol\":{\"keccak256\":\"0x5ee355097dba17dff1eb9c6271b18ab14c79e8087977a910583439992bdf8dbb\",\"urls\":[\"bzz-raw://e6ab567a007e5b2e2e38b243f83d0dc7c58775559844ec709558bf1345c41155\",\"dweb:/ipfs/QmbAiyTwcD65zycx9erwF5oidQoLSLBYG4m9mcz4tuMZZB\"]},\"/Users/makoto/work/ens/ethregistrar/contracts/StablePriceOracle.sol\":{\"keccak256\":\"0x258b726b7127a5c08b77e8b97ebd05f1f6e61f942a3411f55758a5cb199b9921\",\"urls\":[\"bzz-raw://36c7f4190d3c385c296c54b7582118e94b6a9e81d5c94f760d39dac22e1c8ea9\",\"dweb:/ipfs/QmbqrdQfwGsbYKgANdYBh5aPsjxDabW5HbC3TRVGvUBpYi\"]},\"/Users/makoto/work/ens/ethregistrar/contracts/StringUtils.sol\":{\"keccak256\":\"0xb995b040adc3f1f27173ecf389bf69360e45989e2b4d8a503dec8ac0cc10cad3\",\"urls\":[\"bzz-raw://4c7f31b51771c63b0a81b5622abd4f5e2414e74e22ee94eb106564b725f420ab\",\"dweb:/ipfs/QmRcUEFRi2X7SyxAURDngiCxQQ8LENHdBbgFGXzAqXJZ1c\"]},\"openzeppelin-solidity/contracts/ownership/Ownable.sol\":{\"keccak256\":\"0x980de387a1a020a498f53d00f89fecebb12c949a17e8f160093c0303ede2b786\",\"urls\":[\"bzz-raw://f07a2c393caa85f62f0aaa461e3edd50aa59371d4209778ba0558d7f8b4b856c\",\"dweb:/ipfs/QmeN3ZiYGSjCnQFeYaJNgoXjF9eDue1g3e9pqManRkeBtV\"]}},\"version\":1}", 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"source": "pragma solidity >=0.5.0;\n\nimport \"./SafeMath.sol\";\nimport \"./StablePriceOracle.sol\";\n\ncontract LinearPremiumPriceOracle is StablePriceOracle {\n using SafeMath for *;\n\n uint GRACE_PERIOD = 90 days;\n\n uint public initialPremium;\n uint public premiumDecreaseRate;\n\n bytes4 constant private TIME_UNTIL_PREMIUM_ID = bytes4(keccak256(\"timeUntilPremium(uint,uint\"));\n\n constructor(AggregatorInterface _usdOracle, uint[] memory _rentPrices, uint _initialPremium, uint _premiumDecreaseRate) public\n StablePriceOracle(_usdOracle, _rentPrices)\n {\n initialPremium = _initialPremium;\n premiumDecreaseRate = _premiumDecreaseRate;\n }\n\n function _premium(string memory name, uint expires, uint /*duration*/) internal view returns(uint) {\n expires = expires.add(GRACE_PERIOD);\n if(expires > now) {\n // No premium for renewals\n return 0;\n }\n\n // Calculate the discount off the maximum premium\n uint discount = premiumDecreaseRate.mul(now.sub(expires));\n\n // If we've run out the premium period, return 0.\n if(discount > initialPremium) {\n return 0;\n }\n \n return initialPremium - discount;\n }\n\n /**\n * @dev Returns the timestamp at which a name with the specified expiry date will have\n * the specified re-registration price premium.\n * @param expires The timestamp at which the name expires.\n * @param amount The amount, in wei, the caller is willing to pay\n * @return The timestamp at which the premium for this domain will be `amount`.\n */\n function timeUntilPremium(uint expires, uint amount) external view returns(uint) {\n amount = weiToAttoUSD(amount);\n require(amount <= initialPremium);\n\n expires = expires.add(GRACE_PERIOD);\n\n uint discount = initialPremium.sub(amount);\n uint duration = discount.div(premiumDecreaseRate);\n return expires.add(duration);\n }\n\n function supportsInterface(bytes4 interfaceID) public view returns (bool) {\n return (interfaceID == TIME_UNTIL_PREMIUM_ID) || super.supportsInterface(interfaceID);\n 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"stateMutability": "view", "superFunction": 4316, "visibility": "public" } ], "scope": 1623, "src": "86:2078:5" } ], "src": "0:2165:5" }, "compiler": { "name": "solc", "version": "0.5.16+commit.9c3226ce.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.2.0", "updatedAt": "2020-06-17T16:01:00.497Z", "devdoc": { "methods": { "isOwner()": { "return": "true if `msg.sender` is the owner of the contract." }, "owner()": { "return": "the address of the owner." }, "premium(string,uint256,uint256)": { "details": "Returns the pricing premium in wei." }, "renounceOwnership()": { "details": "Allows the current owner to relinquish control of the contract." }, "setOracle(address)": { "details": "Sets the price oracle address", "params": { "_usdOracle": "The address of the price oracle to use." } }, "setPrices(uint256[])": { "details": "Sets rent prices.", "params": { "_rentPrices": "The price array. Each element corresponds to a specific name length; names longer than the length of the array default to the price of the last element. Values are in base price units, equal to one attodollar (1e-18 dollar) each." } }, "timeUntilPremium(uint256,uint256)": { "details": "Returns the timestamp at which a name with the specified expiry date will have the specified re-registration price premium.", "params": { "amount": "The amount, in wei, the caller is willing to pay", "expires": "The timestamp at which the name expires." }, "return": "The timestamp at which the premium for this domain will be `amount`." }, "transferOwnership(address)": { "details": "Allows the current owner to transfer control of the contract to a newOwner.", "params": { "newOwner": "The address to transfer ownership to." } } } }, "userdoc": { "methods": { "renounceOwnership()": { "notice": "Renouncing to ownership will leave the contract without an owner. It will not be possible to call the functions with the `onlyOwner` modifier anymore." } } } }