{ "contractName": "Vault", "abi": [ { "constant": false, "inputs": [ { "name": "_token", "type": "address" }, { "name": "_amount", "type": "uint256" } ], "name": "requestAllowance", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "TRANSFER_ROLE", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_tokens", "type": "address[]" }, { "name": "_amounts", "type": "uint256[]" } ], "name": "requestAllowances", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "EVMSCRIPT_REGISTRY_APP_ID", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "appId", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getInitializationBlock", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "EVMSCRIPT_REGISTRY_APP", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "REQUEST_ALLOWANCES_ROLE", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_sender", "type": "address" }, { "name": "_role", "type": "bytes32" }, { "name": "params", "type": "uint256[]" } ], "name": "canPerform", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_token", "type": "address" }, { "name": "_receiver", "type": "address" }, { "name": "_amount", "type": "uint256" } ], "name": "transferTokens", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "kernel", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_script", "type": "bytes" } ], "name": "getExecutor", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "token", "type": "address" }, { "indexed": true, "name": "spender", "type": "address" }, { "indexed": false, "name": "amount", "type": "uint256" } ], "name": "SetAllowance", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "token", "type": "address" }, { "indexed": true, "name": "receiver", "type": "address" }, { "indexed": false, "name": 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"source": "pragma solidity 0.4.18;\n\nimport \"@aragon/os/contracts/apps/AragonApp.sol\";\n\nimport \"@aragon/os/contracts/lib/zeppelin/token/ERC20.sol\";\nimport \"@aragon/os/contracts/lib/misc/Migrations.sol\";\n\n\ncontract Vault is AragonApp {\n event SetAllowance(address indexed token, address indexed spender, uint256 amount);\n event TokenTransfer(address indexed token, address indexed receiver, uint256 amount);\n\n bytes32 constant public REQUEST_ALLOWANCES_ROLE = keccak256(\"REQUEST_ALLOWANCES_ROLE\");\n bytes32 constant public TRANSFER_ROLE = keccak256(\"TRANSFER_ROLE\");\n\n /**\n * @notice Request for `_spender` to spend up to `_amounts` in `_tokens`\n * @dev This action creates an ERC20 and will allow the spender to transferFrom the Vault address until the allowance is completely spent or it is overiden\n * @param _tokens Array of token addresses\n * @param _amounts Array of token amounts\n */\n function requestAllowances(ERC20[] _tokens, uint256[] _amounts) auth(REQUEST_ALLOWANCES_ROLE) external {\n require(_tokens.length == _amounts.length);\n\n for (uint i = 0; i < _tokens.length; i++) {\n requestAllowance(_tokens[i], _amounts[i]);\n }\n }\n\n function requestAllowance(ERC20 _token, uint256 _amount) authP(REQUEST_ALLOWANCES_ROLE, arr(address(_token), _amount)) public {\n address spender = msg.sender;\n\n // Some token implementations will throw when changing an allowance from non-zero to non-zero\n // https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n if (_token.allowance(address(this), spender) > 0)\n assert(_token.approve(spender, 0));\n\n if (_amount > 0)\n assert(_token.approve(spender, _amount));\n\n SetAllowance(_token, spender, _amount);\n }\n\n /**\n * @notice Transfer `_amount` `_token` from the Vault to `_receiver`\n * @dev This function should be used as little as possible, in favor of using allowances\n * @param _token Address of the token being transferred\n * @param _receiver Address of the recipient of tokens\n * @param _amount Amount of tokens being transferred\n */\n function transferTokens(ERC20 _token, address _receiver, uint256 _amount) authP(TRANSFER_ROLE, arr(address(_token), _receiver, _amount)) external {\n assert(_token.transfer(_receiver, _amount));\n TokenTransfer(_token, _receiver, _amount);\n }\n}\n", "sourcePath": "@aragon/apps-vault/contracts/Vault.sol", "ast": { "attributes": { "absolutePath": "@aragon/apps-vault/contracts/Vault.sol", "exportedSymbols": { "Vault": [ 3519 ] } }, "children": [ { "attributes": { "literals": [ "solidity", "0.4", ".18" ] }, "id": 3352, "name": "PragmaDirective", "src": "0:23:7" }, { "attributes": { "SourceUnit": 6969, "absolutePath": "@aragon/os/contracts/apps/AragonApp.sol", "file": "@aragon/os/contracts/apps/AragonApp.sol", "scope": 3520, "symbolAliases": [ null ], "unitAlias": "" }, "id": 3353, "name": "ImportDirective", "src": "25:49:7" }, { "attributes": { "SourceUnit": 12301, "absolutePath": "@aragon/os/contracts/lib/zeppelin/token/ERC20.sol", "file": "@aragon/os/contracts/lib/zeppelin/token/ERC20.sol", "scope": 3520, "symbolAliases": [ null ], "unitAlias": "" }, "id": 3354, "name": "ImportDirective", "src": "76:59:7" }, { "attributes": { "SourceUnit": 11972, "absolutePath": "@aragon/os/contracts/lib/misc/Migrations.sol", "file": "@aragon/os/contracts/lib/misc/Migrations.sol", "scope": 3520, "symbolAliases": [ null ], "unitAlias": "" }, "id": 3355, "name": "ImportDirective", "src": "136:54:7" }, { "attributes": { "contractDependencies": [ 5905, 6870, 6968, 7261, 7846, 7877 ], "contractKind": "contract", "documentation": null, "fullyImplemented": true, "linearizedBaseContracts": [ 3519, 6968, 7846, 7877, 5905, 7261, 6870 ], "name": "Vault", "scope": 3520 }, "children": [ { "attributes": { "arguments": [ null ] }, "children": [ { "attributes": { "contractScope": null, "name": "AragonApp", "referencedDeclaration": 6968, "type": "contract AragonApp" }, "id": 3356, "name": 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