Created
August 23, 2019 22:24
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| { | |
| "contractName": "Wallet", | |
| "abi": [ | |
| { | |
| "inputs": [ | |
| { | |
| "name": "_master", | |
| "type": "address" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "nonpayable", | |
| "type": "constructor" | |
| }, | |
| { | |
| "payable": true, | |
| "stateMutability": "payable", | |
| "type": "fallback" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [ | |
| { | |
| "name": "_raw", | |
| "type": "bytes32" | |
| }, | |
| { | |
| "name": "_sig", | |
| "type": "bytes" | |
| } | |
| ], | |
| "name": "getSigner", | |
| "outputs": [ | |
| { | |
| "name": "signer", | |
| "type": "address" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "pure", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [ | |
| { | |
| "name": "_target", | |
| "type": "address" | |
| }, | |
| { | |
| "name": "_value", | |
| "type": "uint256" | |
| }, | |
| { | |
| "name": "_data", | |
| "type": "bytes" | |
| }, | |
| { | |
| "name": "_sig", | |
| "type": "bytes" | |
| } | |
| ], | |
| "name": "isValidSignature", | |
| "outputs": [ | |
| { | |
| "name": "isValid", | |
| "type": "bool" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": false, | |
| "inputs": [ | |
| { | |
| "name": "_target", | |
| "type": "address[]" | |
| }, | |
| { | |
| "name": "_value", | |
| "type": "uint256[]" | |
| }, | |
| { | |
| "name": "_data", | |
| "type": "bytes[]" | |
| }, | |
| { | |
| "name": "_dataHashSignature", | |
| "type": "bytes[]" | |
| }, | |
| { | |
| "name": "_nonce", | |
| "type": "uint256[]" | |
| } | |
| ], | |
| "name": "execute", | |
| "outputs": [ | |
| { | |
| "name": "", | |
| "type": "bool" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "nonpayable", | |
| "type": "function" | |
| } | |
| ], | |
| "metadata": "{\"compiler\":{\"version\":\"0.5.8+commit.23d335f2\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":true,\"inputs\":[{\"name\":\"_target\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"},{\"name\":\"_data\",\"type\":\"bytes\"},{\"name\":\"_sig\",\"type\":\"bytes\"}],\"name\":\"isValidSignature\",\"outputs\":[{\"name\":\"isValid\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_target\",\"type\":\"address[]\"},{\"name\":\"_value\",\"type\":\"uint256[]\"},{\"name\":\"_data\",\"type\":\"bytes[]\"},{\"name\":\"_dataHashSignature\",\"type\":\"bytes[]\"},{\"name\":\"_nonce\",\"type\":\"uint256[]\"}],\"name\":\"execute\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_raw\",\"type\":\"bytes32\"},{\"name\":\"_sig\",\"type\":\"bytes\"}],\"name\":\"getSigner\",\"outputs\":[{\"name\":\"signer\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"name\":\"_master\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"payable\":true,\"stateMutability\":\"payable\",\"type\":\"fallback\"}],\"devdoc\":{\"author\":\"Nico Vergauwen <vergauwennico@gmail.com>\",\"methods\":{\"constructor\":{\"params\":{\"_master\":\"(address) Ethereum address for the master \"}},\"execute(address[],uint256[],bytes[],bytes[],uint256[])\":{\"details\":\"Anyone can execute this but only transactions signed by master or actor (if valid method) are accepted \",\"params\":{\"_data\":\"(bytes[]) Array of ABI encoded transaction data \",\"_dataHashSignature\":\"(bytes[]) Array of transaction signatures for the respective transaction data\",\"_target\":\"(address[]) Array of contract addresses\",\"_value\":\"(uint256[]) Array of wei amounts being sent in the respective transactions \"},\"return\":\"(bool) returns true if all transactions in the batch succeeded\"},\"getSigner(bytes32,bytes)\":{\"params\":{\"_raw\":\"(bytes32) keccak256 hash of the ABI encoded transaction data \",\"_sig\":\"(bytes) the signature resulting from signing 'raw'\"},\"return\":\"signer (address) the EOA that signed the data \"},\"isValidSignature(address,uint256,bytes,bytes)\":{\"params\":{\"_data\":\"(bytes) data being send in the transaction \",\"_sig\":\"(bytes) the signature of the transaction data \",\"_target\":\"(address) contract target address \",\"_value\":\"(uint256) Wei amount being send in the transaction \"},\"return\":\"isValid (bool) true/false based on whether the signer is master or an actor that has access rights to the method at 'target'\"}},\"title\":\"Wallet\"},\"userdoc\":{\"methods\":{\"constructor\":\"Sets the master address upon deployment\",\"execute(address[],uint256[],bytes[],bytes[],uint256[])\":{\"notice\":\"Execute a batch of meta transactions atomically\"},\"getSigner(bytes32,bytes)\":{\"notice\":\"Get the signer of a transaction through ecrecover\"},\"isValidSignature(address,uint256,bytes,bytes)\":{\"notice\":\"Checks whether the signer is an authorized EOA\"}},\"notice\":\"Wallet contract that can execute meta transactions on behalf of authorized signers\"}},\"settings\":{\"compilationTarget\":{\"/Users/nico/Desktop/ethberlin/eth-wallet/contracts/Wallet.sol\":\"Wallet\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"/Users/nico/Desktop/ethberlin/eth-wallet/contracts/Wallet.sol\":{\"keccak256\":\"0xe130b550f38cfa56e2a574fff988c7ff4895d49406a7f61b62492ce0c131a51e\",\"urls\":[\"bzzr://4ddb0daa8e42f596fef1cf1b034416c90ec29a9658c4aea8f617b79e7f4171ee\"]},\"/Users/nico/Desktop/ethberlin/eth-wallet/contracts/libs/ECTools.sol\":{\"keccak256\":\"0x47fedf30ca0232a112a7ad98fd4faa201ec56c463502e324ed00c01834f29488\",\"urls\":[\"bzzr://87a3b08221fedcb6a42b77eafccdc9c1244da08eed3cd01babdeb58f3ecf18a6\"]}},\"version\":1}", | |
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| "source": "pragma solidity >=0.4.21 <0.6.0;\npragma experimental ABIEncoderV2;\n\nimport './libs/ECTools.sol';\n\n/// @title Wallet\n/// @author Nico Vergauwen <vergauwennico@gmail.com>\n/// @notice Wallet contract that can execute meta transactions on behalf of authorized signers\ncontract Wallet {\n\n /// @notice master owner \n address payable master;\n\n /// @notice nonce\n uint256 nonce; \n\n /// @dev Access modifier that requires 'msg.sender' to be 'master'\n modifier onlyMaster() {\n require(msg.sender == master, \"Unauthorized\");\n _;\n }\n\n /// @dev Access modifier that checks whether meta transactions are signed by authorized EOA's\n modifier onlyMasterOrActor(address[] memory target, uint256[] memory value, bytes[] memory data, bytes[] memory dataHashSignature) {\n\t\tfor(uint i=0; i< target.length; i++) {\n require(isValidSignature(target[i], value[i], data[i], dataHashSignature[i]));\n\t\t}\n\t\t_;\n\t}\n\n /// @notice Sets the master address upon deployment\n /// @param _master (address) Ethereum address for the master \n constructor(address payable _master) public {\n master = _master;\n }\n\n /// @notice Fallback \n function() external payable {}\n\n /// @notice Get the signer of a transaction through ecrecover\n /// @param _raw (bytes32) keccak256 hash of the ABI encoded transaction data \n /// @param _sig (bytes) the signature resulting from signing 'raw'\n /// @return signer (address) the EOA that signed the data \n function getSigner(bytes32 _raw, bytes memory _sig) public pure returns(address signer) {\n\t\treturn ECTools.prefixedRecover(_raw, _sig);\n\t}\n\n /// @notice Checks whether the signer is an authorized EOA\n /// @param _target (address) contract target address \n /// @param _value (uint256) Wei amount being send in the transaction \n /// @param _data (bytes) data being send in the transaction \n /// @param _sig (bytes) the signature of the transaction data \n /// @return isValid (bool) true/false based on whether the signer is master or an actor that has access rights to the method at 'target'\n function isValidSignature(address _target, uint256 _value, bytes memory _data, bytes memory _sig) public view returns (bool isValid) {\n bytes32 dataHash = keccak256(abi.encodePacked(_target, _value, _data));\n address signer = getSigner(dataHash, _sig);\n bytes4 method;\n assembly {\n method := mload(add(_data, 0x20))\n }\n return (signer == master);\n }\n\n /// @notice Execute a batch of meta transactions atomically\n /// @dev Anyone can execute this but only transactions signed by master or actor (if valid method) are accepted \n /// @param _target (address[]) Array of contract addresses\n /// @param _value (uint256[]) Array of wei amounts being sent in the respective transactions \n /// @param _data (bytes[]) Array of ABI encoded transaction data \n /// @param _dataHashSignature (bytes[]) Array of transaction signatures for the respective transaction data\n /// @return (bool) returns true if all transactions in the batch succeeded\n\tfunction execute(address[] memory _target, uint256[] memory _value, bytes[] memory _data, bytes[] memory _dataHashSignature, uint256[] memory _nonce) public onlyMasterOrActor(_target, _value, _data, _dataHashSignature) returns (bool) {\n\t\trequire(_target.length <= 8, 'Too many batched transactions');\n for(uint i=0; i< _target.length; i++) {\n require(_nonce[i]>nonce, \"nonce too low\");\n\t\t\t(bool success,) = _target[i].call.value(_value[i])(_data[i]);\n nonce++;\n\t\t\trequire(success, 'Excuting MetaTx Failed');\n\t\t}\n\t\treturn true;\n }\n}", | |
| "sourcePath": "/Users/nico/Desktop/ethberlin/eth-wallet/contracts/Wallet.sol", | |
| "ast": { | |
| "absolutePath": "/Users/nico/Desktop/ethberlin/eth-wallet/contracts/Wallet.sol", | |
| "exportedSymbols": { | |
| "Wallet": [ | |
| 277 | |
| ] | |
| }, | |
| "id": 278, | |
| "nodeType": "SourceUnit", | |
| "nodes": [ | |
| { | |
| "id": 58, | |
| "literals": [ | |
| "solidity", | |
| ">=", | |
| "0.4", | |
| ".21", | |
| "<", | |
| "0.6", | |
| ".0" | |
| ], | |
| "nodeType": "PragmaDirective", | |
| "src": "0:32:1" | |
| }, | |
| { | |
| "id": 59, | |
| "literals": [ | |
| "experimental", | |
| "ABIEncoderV2" | |
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| "id": 207, | |
| "length": null, | |
| "nodeType": "ArrayTypeName", | |
| "src": "3239:9:1", | |
| "typeDescriptions": { | |
| "typeIdentifier": "t_array$_t_uint256_$dyn_storage_ptr", | |
| "typeString": "uint256[]" | |
| } | |
| }, | |
| "value": null, | |
| "visibility": "internal" | |
| } | |
| ], | |
| "src": "3130:133:1" | |
| }, | |
| "returnParameters": { | |
| "id": 218, | |
| "nodeType": "ParameterList", | |
| "parameters": [ | |
| { | |
| "constant": false, | |
| "id": 217, | |
| "name": "", | |
| "nodeType": "VariableDeclaration", | |
| "scope": 276, | |
| "src": "3342:4:1", | |
| "stateVariable": false, | |
| "storageLocation": "default", | |
| "typeDescriptions": { | |
| "typeIdentifier": "t_bool", | |
| "typeString": "bool" | |
| }, | |
| "typeName": { | |
| "id": 216, | |
| "name": "bool", | |
| "nodeType": "ElementaryTypeName", | |
| "src": "3342:4:1", | |
| "typeDescriptions": { | |
| "typeIdentifier": "t_bool", | |
| "typeString": "bool" | |
| } | |
| }, | |
| "value": null, | |
| "visibility": "internal" | |
| } | |
| ], | |
| "src": "3341:6:1" | |
| }, | |
| "scope": 277, | |
| "src": "3114:561:1", | |
| "stateMutability": "nonpayable", | |
| "superFunction": null, | |
| "visibility": "public" | |
| } | |
| ], | |
| "scope": 278, | |
| "src": "265:3412:1" | |
| } | |
| ], | |
| "src": "0:3677:1" | |
| }, | |
| "compiler": { | |
| "name": "solc", | |
| "version": "0.5.8+commit.23d335f2.Emscripten.clang" | |
| }, | |
| "networks": {}, | |
| "schemaVersion": "3.0.11", | |
| "updatedAt": "2019-08-23T21:36:47.628Z", | |
| "devdoc": { | |
| "author": "Nico Vergauwen <vergauwennico@gmail.com>", | |
| "methods": { | |
| "constructor": { | |
| "params": { | |
| "_master": "(address) Ethereum address for the master " | |
| } | |
| }, | |
| "execute(address[],uint256[],bytes[],bytes[],uint256[])": { | |
| "details": "Anyone can execute this but only transactions signed by master or actor (if valid method) are accepted ", | |
| "params": { | |
| "_data": "(bytes[]) Array of ABI encoded transaction data ", | |
| "_dataHashSignature": "(bytes[]) Array of transaction signatures for the respective transaction data", | |
| "_target": "(address[]) Array of contract addresses", | |
| "_value": "(uint256[]) Array of wei amounts being sent in the respective transactions " | |
| }, | |
| "return": "(bool) returns true if all transactions in the batch succeeded" | |
| }, | |
| "getSigner(bytes32,bytes)": { | |
| "params": { | |
| "_raw": "(bytes32) keccak256 hash of the ABI encoded transaction data ", | |
| "_sig": "(bytes) the signature resulting from signing 'raw'" | |
| }, | |
| "return": "signer (address) the EOA that signed the data " | |
| }, | |
| "isValidSignature(address,uint256,bytes,bytes)": { | |
| "params": { | |
| "_data": "(bytes) data being send in the transaction ", | |
| "_sig": "(bytes) the signature of the transaction data ", | |
| "_target": "(address) contract target address ", | |
| "_value": "(uint256) Wei amount being send in the transaction " | |
| }, | |
| "return": "isValid (bool) true/false based on whether the signer is master or an actor that has access rights to the method at 'target'" | |
| } | |
| }, | |
| "title": "Wallet" | |
| }, | |
| "userdoc": { | |
| "methods": { | |
| "constructor": "Sets the master address upon deployment", | |
| "execute(address[],uint256[],bytes[],bytes[],uint256[])": { | |
| "notice": "Execute a batch of meta transactions atomically" | |
| }, | |
| "getSigner(bytes32,bytes)": { | |
| "notice": "Get the signer of a transaction through ecrecover" | |
| }, | |
| "isValidSignature(address,uint256,bytes,bytes)": { | |
| "notice": "Checks whether the signer is an authorized EOA" | |
| } | |
| }, | |
| "notice": "Wallet contract that can execute meta transactions on behalf of authorized signers" | |
| } | |
| } |
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