safe-react/safe-contracts/build/contracts/StateChannelModule.json

{
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        }
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      "name": "changeMasterCopy",
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      "stateMutability": "nonpayable",
      "type": "function"
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      "name": "NAME",
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          "type": "string"
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    {
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        {
          "name": "",
          "type": "bytes32"
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      "name": "isExecuted",
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          "type": "uint256"
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      "stateMutability": "view",
      "type": "function"
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      "name": "VERSION",
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          "type": "string"
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        },
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        {
          "name": "data",
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        },
        {
          "name": "operation",
          "type": "uint8"
        },
        {
          "name": "nonce",
          "type": "uint256"
        },
        {
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        {
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        {
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      ],
      "name": "getTransactionHash",
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        {
          "name": "",
          "type": "bytes32"
        }
      ],
      "payable": false,
      "stateMutability": "view",
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  "source": "pragma solidity 0.4.24;\nimport \"../base/Module.sol\";\nimport \"../base/OwnerManager.sol\";\nimport \"../common/SignatureDecoder.sol\";\n\n\n/// @title Gnosis Safe State Module - A module that allows interaction with statechannels.\n/// @author Stefan George - <stefan@gnosis.pm>\n/// @author Richard Meissner - <richard@gnosis.pm>\ncontract StateChannelModule is Module, SignatureDecoder {\n\n    string public constant NAME = \"State Channel Module\";\n    string public constant VERSION = \"0.0.2\";\n\n    // isExecuted mapping allows to check if a transaction (by hash) was already executed.\n    mapping (bytes32 => uint256) public isExecuted;\n\n    /// @dev Setup function sets manager\n    function setup()\n        public\n    {\n        setManager();\n    }\n\n    /// @dev Allows to execute a Safe transaction confirmed by required number of owners.\n    /// @param to Destination address of Safe transaction.\n    /// @param value Ether value of Safe transaction.\n    /// @param data Data payload of Safe transaction.\n    /// @param operation Operation type of Safe transaction.\n    /// @param nonce Nonce used for this Safe transaction.\n    /// @param signatures Packed signature data ({bytes32 r}{bytes32 s}{uint8 v})\n    function execTransaction(\n        address to, \n        uint256 value, \n        bytes data, \n        Enum.Operation operation, \n        uint256 nonce,\n        bytes signatures\n    )\n        public\n    {\n        bytes32 transactionHash = getTransactionHash(to, value, data, operation, nonce);\n        require(isExecuted[transactionHash] == 0, \"Transaction already executed\");\n        checkHash(transactionHash, signatures);\n        // Mark as executed and execute transaction.\n        isExecuted[transactionHash] = 1;\n        require(manager.execTransactionFromModule(to, value, data, operation), \"Could not execute transaction\");\n    }\n\n    function checkHash(bytes32 transactionHash, bytes signatures)\n        internal\n        view\n    {\n        // There cannot be an owner with address 0.\n        address lastOwner = address(0);\n        address currentOwner;\n        uint256 i;\n        uint256 threshold = OwnerManager(manager).getThreshold();\n        // Validate threshold is reached.\n        for (i = 0; i < threshold; i++) {\n            currentOwner = recoverKey(transactionHash, signatures, i);\n            require(OwnerManager(manager).isOwner(currentOwner), \"Signature not provided by owner\");\n            require(currentOwner > lastOwner, \"Signatures are not ordered by owner address\");\n            lastOwner = currentOwner;\n        }\n    }\n\n    /// @dev Returns hash to be signed by owners.\n    /// @param to Destination address.\n    /// @param value Ether value.\n    /// @param data Data payload.\n    /// @param operation Operation type.\n    /// @param nonce Transaction nonce.\n    /// @return Transaction hash.\n    function getTransactionHash(\n        address to, \n        uint256 value, \n        bytes data, \n        Enum.Operation operation, \n        uint256 nonce\n    )\n        public\n        view\n        returns (bytes32)\n    {\n        return keccak256(abi.encodePacked(byte(0x19), byte(0), this, to, value, data, operation, nonce));\n    }\n}\n",
  "sourcePath": "/Users/apanizo/git/gnosis/safe-contracts/contracts/modules/StateChannelModule.sol",
  "ast": {
    "absolutePath": "/Users/apanizo/git/gnosis/safe-contracts/contracts/modules/StateChannelModule.sol",
    "exportedSymbols": {
      "StateChannelModule": [
        2562
      ]
    },
    "id": 2563,
    "nodeType": "SourceUnit",
    "nodes": [
      {
        "id": 2377,
        "literals": [
          "solidity",
          "0.4",
          ".24"
        ],
        "nodeType": "PragmaDirective",
        "src": "0:23:19"
      },
      {
        "absolutePath": "/Users/apanizo/git/gnosis/safe-contracts/contracts/base/Module.sol",
        "file": "../base/Module.sol",
        "id": 2378,
        "nodeType": "ImportDirective",
        "scope": 2563,
        "sourceUnit": 936,
        "src": "24:28:19",
        "symbolAliases": [],
        "unitAlias": ""
      },
      {
        "absolutePath": "/Users/apanizo/git/gnosis/safe-contracts/contracts/base/OwnerManager.sol",
        "file": "../base/OwnerManager.sol",
        "id": 2379,
        "nodeType": "ImportDirective",
        "scope": 2563,
        "sourceUnit": 1653,
        "src": "53:34:19",
        "symbolAliases": [],
        "unitAlias": ""
      },
      {
        "absolutePath": "/Users/apanizo/git/gnosis/safe-contracts/contracts/common/SignatureDecoder.sol",
        "file": "../common/SignatureDecoder.sol",
        "id": 2380,
        "nodeType": "ImportDirective",
        "scope": 2563,
        "sourceUnit": 1792,
        "src": "88:40:19",
        "symbolAliases": [],
        "unitAlias": ""
      },
      {
        "baseContracts": [
          {
            "arguments": null,
            "baseName": {
              "contractScope": null,
              "id": 2381,
              "name": "Module",
              "nodeType": "UserDefinedTypeName",
              "referencedDeclaration": 935,
              "src": "351:6:19",
              "typeDescriptions": {
                "typeIdentifier": "t_contract$_Module_$935",
                "typeString": "contract Module"
              }
            },
            "id": 2382,
            "nodeType": "InheritanceSpecifier",
            "src": "351:6:19"
          },
          {
            "arguments": null,
            "baseName": {
              "contractScope": null,
              "id": 2383,
              "name": "SignatureDecoder",
              "nodeType": "UserDefinedTypeName",
              "referencedDeclaration": 1791,
              "src": "359:16:19",
              "typeDescriptions": {
                "typeIdentifier": "t_contract$_SignatureDecoder_$1791",
                "typeString": "contract SignatureDecoder"
              }
            },
            "id": 2384,
            "nodeType": "InheritanceSpecifier",
            "src": "359:16:19"
          }
        ],
        "contractDependencies": [
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          1693,
          1735,
          1791
        ],
        "contractKind": "contract",
        "documentation": "@title Gnosis Safe State Module - A module that allows interaction with statechannels.\n @author Stefan George - <stefan@gnosis.pm>\n @author Richard Meissner - <richard@gnosis.pm>",
        "fullyImplemented": true,
        "id": 2562,
        "linearizedBaseContracts": [
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          1791,
          935,
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        "name": "StateChannelModule",
        "nodeType": "ContractDefinition",
        "nodes": [
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