{ "contractName": "SecretStoreServiceBase", "abi": [ { "constant": false, "inputs": [], "name": "renounceOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "isOwner", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "name": "keyServerSetAddressInit", "type": "address" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "previousOwner", "type": "address" }, { "indexed": true, "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "constant": true, "inputs": [], "name": "keyServersCount", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "keyServer", "type": "address" } ], "name": "requireKeyServer", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [], "name": "drain", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "bytecode": "0x", "deployedBytecode": "0x", "sourceMap": "", "deployedSourceMap": "", "source": "//! The Secret Store service contract intefaces.\n//!\n//! Copyright 2017 Svyatoslav Nikolsky, Parity Technologies Ltd.\n//!\n//! Licensed under the Apache License, Version 2.0 (the \"License\");\n//! you may not use this file except in compliance with the License.\n//! You may obtain a copy of the License at\n//!\n//! http://www.apache.org/licenses/LICENSE-2.0\n//!\n//! Unless required by applicable law or agreed to in writing, software\n//! distributed under the License is distributed on an \"AS IS\" BASIS,\n//! WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n//! See the License for the specific language governing permissions and\n//! limitations under the License.\n\npragma solidity ^0.4.24;\n\nimport \"openzeppelin-solidity/contracts/ownership/Ownable.sol\";\nimport \"../interfaces/KeyServerSet.sol\";\n\n\n/// Base contract for all Secret Store services.\ncontract SecretStoreServiceBase is Ownable {\n /// Response support.\n enum ResponseSupport { Confirmed, Unconfirmed, Impossible }\n\n /// Single service request responses.\n struct RequestResponses {\n /// Number of block when servers set has been changed last time.\n /// This whole structure is valid when this value stays the same.\n /// Once this changes, all previous responses are erased.\n uint256 keyServerSetChangeBlock;\n /// We only support up to 256 key servers. If bit is set, this means that key server\n /// has already voted for some confirmation (we do not care about exact response).\n uint256 respondedKeyServersMask;\n /// Number of key servers that have responded to request (number of ones in respondedKeyServersMask).\n uint8 respondedKeyServersCount;\n /// Response => number of supporting key servers.\n mapping (bytes32 => uint8) responsesSupport;\n /// Maximal support of single response.\n uint8 maxResponseSupport;\n /// All responses that are in responsesSupport. In ideal world, when all\n /// key servers are working correctly, there'll be 1 response. Max 256 responses.\n bytes32[] responses;\n }\n\n /// Only pass when fee is paid.\n modifier whenFeePaid(uint256 amount) {\n require(msg.value >= amount, \"Transaction value is not enough.\");\n _;\n }\n\n /// Only pass when 'valid' public is passed.\n modifier validPublic(bytes publicKey) {\n require(publicKey.length == 64, \"Public key is not valid.\");\n _;\n }\n\n /// Constructor.\n constructor(address keyServerSetAddressInit) internal {\n keyServerSetAddress = keyServerSetAddressInit;\n }\n\n /// Return number of key servers.\n function keyServersCount() public view returns (uint8) {\n return KeyServerSet(keyServerSetAddress).getCurrentKeyServersCount();\n }\n\n /// Return index of key server at given address.\n function requireKeyServer(address keyServer) public view returns (uint8) {\n return KeyServerSet(keyServerSetAddress).getCurrentKeyServerIndex(keyServer);\n }\n\n /// Drain balance of sender key server.\n function drain() public {\n uint256 balance = balances[msg.sender];\n require(balance != 0, \"Balance is 0.\");\n balances[msg.sender] = 0;\n msg.sender.transfer(balance);\n }\n\n /// Deposit equal share of amount to each of key servers.\n function deposit() internal {\n uint8 count = keyServersCount();\n uint256 amount = msg.value;\n uint256 share = amount / count;\n for (uint8 i = 0; i < count - 1; i++) {\n address keyServer = KeyServerSet(keyServerSetAddress).getCurrentKeyServer(i);\n balances[keyServer] += share;\n amount = amount - share;\n }\n\n address lastKeyServer = KeyServerSet(keyServerSetAddress).getCurrentKeyServer(count - 1);\n balances[lastKeyServer] += amount;\n }\n\n /// Returns true if response from given keyServer is required.\n function isResponseRequired(RequestResponses storage responses, uint8 keyServerIndex) internal view returns (bool) {\n // if servers set has changed, new response is definitely required\n uint256 keyServerSetChangeBlock = KeyServerSet(keyServerSetAddress).getCurrentLastChange();\n if (keyServerSetChangeBlock != responses.keyServerSetChangeBlock) {\n return true;\n }\n\n // only require response when server has not responded before\n uint256 keyServerMask = (uint256(1) << keyServerIndex);\n return ((responses.respondedKeyServersMask & keyServerMask) == 0);\n }\n\n /// Insert key server confirmation.\n function insertResponse(\n RequestResponses storage responses,\n uint8 keyServerIndex,\n uint8 threshold,\n bytes32 response) internal returns (ResponseSupport)\n {\n // check that servers set is still the same (and all previous responses are valid)\n uint256 keyServerSetChangeBlock = KeyServerSet(keyServerSetAddress).getCurrentLastChange();\n if (responses.respondedKeyServersCount == 0) {\n responses.keyServerSetChangeBlock = keyServerSetChangeBlock;\n } else if (responses.keyServerSetChangeBlock != keyServerSetChangeBlock) {\n resetResponses(responses, keyServerSetChangeBlock);\n }\n\n // check if key server has already responded\n uint256 keyServerMask = (uint256(1) << keyServerIndex);\n if ((responses.respondedKeyServersMask & keyServerMask) != 0) {\n return ResponseSupport.Unconfirmed;\n }\n\n // insert response\n uint8 responseSupport = responses.responsesSupport[response] + 1;\n responses.respondedKeyServersMask |= keyServerMask;\n responses.respondedKeyServersCount += 1;\n responses.responsesSupport[response] = responseSupport;\n if (responseSupport == 1) {\n responses.responses.push(response);\n }\n if (responseSupport >= responses.maxResponseSupport) {\n responses.maxResponseSupport = responseSupport;\n\n // check if passed response has received enough support\n if (threshold <= responseSupport - 1) {\n return ResponseSupport.Confirmed;\n }\n }\n\n // check if max confirmation CAN receive enough support\n uint8 keyServersLeft = keyServersCount() - responses.respondedKeyServersCount;\n if (threshold > responses.maxResponseSupport + keyServersLeft - 1) {\n return ResponseSupport.Impossible;\n }\n\n return ResponseSupport.Unconfirmed;\n }\n\n /// Clear responses before removal.\n function clearResponses(RequestResponses storage responses) internal {\n for (uint256 i = 0; i < responses.responses.length; ++i) {\n delete responses.responsesSupport[responses.responses[i]];\n }\n }\n\n /// Remove request id from array.\n function removeRequestKey(bytes32[] storage requests, bytes32 request) internal {\n for (uint i = 0; i < requests.length; ++i) {\n if (requests[i] == request) {\n requests[i] = requests[requests.length - 1];\n requests.length = requests.length - 1;\n break;\n }\n }\n }\n\n /// Reset responses.\n function resetResponses(RequestResponses storage responses, uint256 keyServerSetChangeBlock) private {\n clearResponses(responses);\n responses.keyServerSetChangeBlock = keyServerSetChangeBlock;\n responses.respondedKeyServersMask = 0;\n responses.respondedKeyServersCount = 0;\n responses.maxResponseSupport = 0;\n responses.responses.length = 0;\n }\n\n /// Address of KeyServerSet contract.\n address private keyServerSetAddress;\n /// Balances of key servers.\n mapping (address => uint256) private balances;\n /// Active requests.\n mapping (bytes32 => RequestResponses) private requests;\n}\n", "sourcePath": "/home/aznagy/work/secretstore/secretstore-contracts/contracts/service/SecretStoreServiceBase.sol", "ast": { "absolutePath": "/home/aznagy/work/secretstore/secretstore-contracts/contracts/service/SecretStoreServiceBase.sol", "exportedSymbols": { "SecretStoreServiceBase": [ 3512 ] }, "id": 3513, "nodeType": "SourceUnit", "nodes": [ { "id": 2986, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "689:24:8" }, { "absolutePath": "openzeppelin-solidity/contracts/ownership/Ownable.sol", "file": "openzeppelin-solidity/contracts/ownership/Ownable.sol", "id": 2987, "nodeType": "ImportDirective", "scope": 3513, "sourceUnit": 4824, "src": "715:63:8", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": 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"typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3460, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7272:7:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7235:69:8" }, "payable": false, "returnParameters": { "id": 3463, "nodeType": "ParameterList", "parameters": [], "src": "7313:0:8" }, "scope": 3512, "src": "7212:389:8", "stateMutability": "nonpayable", "superFunction": null, "visibility": "private" }, { "constant": false, "id": 3503, "name": "keyServerSetAddress", "nodeType": "VariableDeclaration", "scope": 3512, "src": "7649:35:8", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3502, "name": "address", "nodeType": "ElementaryTypeName", "src": "7649:7:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "private" }, { "constant": false, "id": 3507, "name": "balances", "nodeType": "VariableDeclaration", "scope": 3512, "src": "7723:45:8", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 3506, "keyType": { "id": 3504, "name": "address", "nodeType": "ElementaryTypeName", "src": "7732:7:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "7723:28:8", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 3505, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7743:7:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "private" }, { "constant": false, "id": 3511, "name": "requests", "nodeType": "VariableDeclaration", "scope": 3512, "src": "7799:54:8", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_struct$_RequestResponses_$3010_storage_$", "typeString": "mapping(bytes32 => struct SecretStoreServiceBase.RequestResponses)" }, "typeName": { "id": 3510, "keyType": { "id": 3508, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "7808:7:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Mapping", "src": "7799:37:8", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_struct$_RequestResponses_$3010_storage_$", "typeString": "mapping(bytes32 => struct SecretStoreServiceBase.RequestResponses)" }, "valueType": { "contractScope": null, "id": 3509, "name": "RequestResponses", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3010, "src": "7819:16:8", "typeDescriptions": { "typeIdentifier": "t_struct$_RequestResponses_$3010_storage_ptr", "typeString": "struct SecretStoreServiceBase.RequestResponses" } } }, "value": null, "visibility": "private" } ], "scope": 3513, "src": "871:6985:8" } ], "src": "689:7168:8" }, "compiler": { "name": "solc", "version": "0.4.25+commit.59dbf8f1.Emscripten.clang" }, "networks": {}, "schemaVersion": "2.0.2", "updatedAt": "2019-01-23T09:53:59.503Z" }