diff --git a/.ci/drone.yml b/.ci/drone.yml new file mode 100644 index 0000000..e7706f2 --- /dev/null +++ b/.ci/drone.yml @@ -0,0 +1,187 @@ +kind: pipeline +name: oraclize-krakenPriceTicker-0.5 + +steps: +- name: test-url-kraken + image: node:lts-alpine + commands: + - echo "installing deps... " && apk update > /dev/null && apk add git gcc g++ make python > /dev/null + - rm -rf ./ethereum-examples/ + - git clone https://github.com/oraclize/ethereum-examples.git + - cp -f ./oraclizeAPI_0.5.sol ./ethereum-examples/solidity/truffle-examples/kraken-price-ticker/contracts/oraclizeAPI.sol + - cd ./ethereum-examples/solidity/truffle-examples/kraken-price-ticker/ + - npm i > /dev/null 2>&1 + - npm i truffle -g --unsafe-perm > /dev/null + - npm i ganache-cli -g --unsafe-perm > /dev/null + - ganache-cli -p 9545 > /dev/null & + - sleep 10 + - npx ethereum-bridge -a 9 --url 127.0.0.1:9545 --dev > /dev/null & + - sleep 50 + - truffle test + +--- +kind: pipeline +name: provable-delegatedMath-0.5 + +steps: +- name: test-computation-math + image: node:lts-alpine + commands: + - echo "installing deps... " && apk update > /dev/null && apk add git gcc g++ make python > /dev/null + - rm -rf ./ethereum-examples/ + - git clone https://github.com/oraclize/ethereum-examples.git + - cp -f ./provableAPI_0.5.sol ./ethereum-examples/solidity/truffle-examples/delegated-math/contracts/provableAPI.sol + - cd ./ethereum-examples/solidity/truffle-examples/delegated-math/ + - sed -i.bu 's/oraclize/provable/g' ./contracts/DelegatedMath.sol + - sed -i.bu 's/usingOraclize/usingProvable/g' ./contracts/DelegatedMath.sol + - npm i > /dev/null 2>&1 + - npm i truffle -g --unsafe-perm > /dev/null + - npm i ganache-cli -g --unsafe-perm > /dev/null + - ganache-cli -p 9545 > /dev/null & + - sleep 10 + - npx ethereum-bridge -a 9 --url 127.0.0.1:9545 --dev > /dev/null & + - sleep 50 + - truffle test + +--- +kind: pipeline +name: provable-dieselPrice-0.5 + +steps: +- name: test-url-diesel + image: node:lts-alpine + commands: + - echo "installing deps... " && apk update > /dev/null && apk add git gcc g++ make python > /dev/null + - rm -rf ./ethereum-examples/ + - git clone https://github.com/oraclize/ethereum-examples.git + - cp -f ./provableAPI_0.5.sol ./ethereum-examples/solidity/truffle-examples/diesel-price/contracts/provableAPI.sol + - cd ./ethereum-examples/solidity/truffle-examples/diesel-price/ + - sed -i.bu 's/oraclize/provable/g' ./contracts/DieselPrice.sol + - sed -i.bu 's/usingOraclize/usingProvable/g' ./contracts/DieselPrice.sol + - npm i > /dev/null 2>&1 + - npm i truffle -g --unsafe-perm > /dev/null + - npm i ganache-cli -g --unsafe-perm > /dev/null + - ganache-cli -p 9545 > /dev/null & + - sleep 10 + - npx ethereum-bridge -a 9 --url 127.0.0.1:9545 --dev > /dev/null & + - sleep 50 + - truffle test +--- +kind: pipeline +name: provable-krakenPriceTicker-0.5 + +steps: +- name: test-url-kraken + image: node:lts-alpine + commands: + - echo "installing deps... " && apk update > /dev/null && apk add git gcc g++ make python > /dev/null + - rm -rf ./ethereum-examples/ + - git clone https://github.com/oraclize/ethereum-examples.git + - cp -f ./provableAPI_0.5.sol ./ethereum-examples/solidity/truffle-examples/kraken-price-ticker/contracts/provableAPI.sol + - cd ./ethereum-examples/solidity/truffle-examples/kraken-price-ticker/ + - sed -i.bu 's/oraclize/provable/g' ./contracts/KrakenPriceTicker.sol + - sed -i.bu 's/usingOraclize/usingProvable/g' ./contracts/KrakenPriceTicker.sol + - npm i > /dev/null 2>&1 + - npm i truffle -g --unsafe-perm > /dev/null + - npm i ganache-cli -g --unsafe-perm > /dev/null + - ganache-cli -p 9545 > /dev/null & + - sleep 10 + - npx ethereum-bridge -a 9 --url 127.0.0.1:9545 --dev > /dev/null & + - sleep 50 + - truffle test + +--- +kind: pipeline +name: provable-streamr-0.5 + +steps: +- name: test-computation-streamr + image: node:lts-alpine + commands: + - echo "installing deps... " && apk update > /dev/null && apk add git gcc g++ make python > /dev/null + - rm -rf ./ethereum-examples/ + - git clone https://github.com/oraclize/ethereum-examples.git + - cp -f ./provableAPI_0.5.sol ./ethereum-examples/solidity/truffle-examples/streamr/contracts/provableAPI.sol + - cd ./ethereum-examples/solidity/truffle-examples/streamr/ + - sed -i.bu 's/oraclize/provable/g' ./contracts/StreamrTweetsCounter.sol + - sed -i.bu 's/usingOraclize/usingProvable/g' ./contracts/StreamrTweetsCounter.sol + - npm i > /dev/null 2>&1 + - npm i truffle -g --unsafe-perm > /dev/null + - npm i ganache-cli -g --unsafe-perm > /dev/null + - ganache-cli -p 9545 > /dev/null & + - sleep 10 + - npx ethereum-bridge -a 9 --url 127.0.0.1:9545 --dev > /dev/null & + - sleep 50 + - truffle test + +--- +#kind: pipeline +#name: provable-urlRequests-0.5 +# +#steps: +#- name: test-computation-requests +# image: node:lts-alpine +# commands: +# - echo "installing deps... " && apk update > /dev/null && apk add git gcc g++ make python > /dev/null +# - rm -rf ./ethereum-examples/ +# - git clone https://github.com/oraclize/ethereum-examples.git +# - cp -f ./provableAPI_0.5.sol ./ethereum-examples/solidity/truffle-examples/url-requests/contracts/provableAPI.sol +# - cd ./ethereum-examples/solidity/truffle-examples/url-requests/ +# - sed -i.bu 's/oraclize/provable/g' ./contracts/UrlRequests.sol +# - sed -i.bu 's/usingOraclize/usingProvable/g' ./contracts/UrlRequests.sol +# - npm i > /dev/null 2>&1 +# - npm i truffle -g --unsafe-perm > /dev/null +# - npm i ganache-cli -g --unsafe-perm > /dev/null +# - ganache-cli -p 9545 > /dev/null & +# - sleep 10 +# - npx ethereum-bridge -a 9 --url 127.0.0.1:9545 --dev > /dev/null & +# - sleep 50 +# - truffle test +# +#--- +kind: pipeline +name: provable-wolframAlpha-0.5 + +steps: +- name: test-wolfram-alpha + image: node:lts-alpine + commands: + - echo "installing deps... " && apk update > /dev/null && apk add git gcc g++ make python > /dev/null + - rm -rf ./ethereum-examples/ + - git clone https://github.com/oraclize/ethereum-examples.git + - cp -f ./provableAPI_0.5.sol ./ethereum-examples/solidity/truffle-examples/wolfram-alpha/contracts/provableAPI.sol + - cd ./ethereum-examples/solidity/truffle-examples/wolfram-alpha/ + - sed -i.bu 's/oraclize/provable/g' ./contracts/WolframAlpha.sol + - sed -i.bu 's/usingOraclize/usingProvable/g' ./contracts/WolframAlpha.sol + - npm i > /dev/null 2>&1 + - npm i truffle -g --unsafe-perm > /dev/null + - npm i ganache-cli -g --unsafe-perm > /dev/null + - ganache-cli -p 9545 > /dev/null & + - sleep 10 + - npx ethereum-bridge -a 9 --url 127.0.0.1:9545 --dev > /dev/null & + - sleep 50 + - truffle test + +--- +kind: pipeline +name: provable-youtubeViews-0.5 + +steps: +- name: test-url-youtube + image: node:lts-alpine + commands: + - echo "installing deps... " && apk update > /dev/null && apk add git gcc g++ make python > /dev/null + - rm -rf ./ethereum-examples/ + - git clone https://github.com/oraclize/ethereum-examples.git + - cp -f ./provableAPI_0.5.sol ./ethereum-examples/solidity/truffle-examples/youtube-views/contracts/provableAPI.sol + - cd ./ethereum-examples/solidity/truffle-examples/youtube-views/ + - sed -i.bu 's/oraclize/provable/g' ./contracts/YoutubeViews.sol + - sed -i.bu 's/usingOraclize/usingProvable/g' ./contracts/YoutubeViews.sol + - npm i > /dev/null 2>&1 + - npm i truffle -g --unsafe-perm > /dev/null + - npm i ganache-cli -g --unsafe-perm > /dev/null + - ganache-cli -p 9545 > /dev/null & + - sleep 10 + - npx ethereum-bridge -a 9 --url 127.0.0.1:9545 --dev > /dev/null & + - sleep 50 + - truffle test diff --git a/LICENSE b/LICENSE index 2abe990..a642eec 100644 --- a/LICENSE +++ b/LICENSE @@ -1,6 +1,8 @@ MIT License -Copyright (c) 2016 Oraclize LTD +Copyright (c) 2015-2016 Oraclize SRL +Copyright (c) 2016-2019 Oraclize LTD +Copyright (c) 2019 Provable Things Limited Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal diff --git a/README.md b/README.md index a04f905..330ce69 100644 --- a/README.md +++ b/README.md @@ -1,22 +1,22 @@ -## Oraclize Ethereum API [![Join the chat at https://gitter.im/oraclize/ethereum-api](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/oraclize/ethereum-api?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Docs@Oraclize.it](https://camo.githubusercontent.com/5e89710c6ae9ce0da822eec138ee1a2f08b34453/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f646f63732d536c6174652d627269676874677265656e2e737667)](http://docs.oraclize.it) [![HitCount](http://hits.dwyl.io/oraclize/ethereum-api.svg)](http://hits.dwyl.io/oraclize/ethereum-api) [![MIT Licence](https://badges.frapsoft.com/os/mit/mit.svg?v=103)](https://opensource.org/licenses/mit-license.php) +## Provable Ethereum API [![Join the chat at https://gitter.im/oraclize/ethereum-api](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/oraclize/ethereum-api?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Docs@Provable.it](https://camo.githubusercontent.com/5e89710c6ae9ce0da822eec138ee1a2f08b34453/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f646f63732d536c6174652d627269676874677265656e2e737667)](http://docs.oraclize.it) [![HitCount](http://hits.dwyl.io/oraclize/ethereum-api.svg)](http://hits.dwyl.io/oraclize/ethereum-api) [![MIT Licence](https://badges.frapsoft.com/os/mit/mit.svg?v=103)](https://opensource.org/licenses/mit-license.php)   -Thanks to this __Ethereum API__, enriching your smart-contracts with external data using __Oraclize__ is very easy! +Thanks to this __Ethereum API__, enriching your smart-contracts with external data using __Provable__ is very easy! -In Solidity it is as simple as inheriting the __`usingOraclize`__ contract that you'll find in this repository. +In Solidity it is as simple as inheriting the __`usingProvable`__ contract that you'll find in this repository. -This will provide your contract with functions like __`oraclize_query(...)`__, which make it trivial for you to leverage our oracle technology straight away. +This will provide your contract with functions like __`provable_query(...)`__, which make it trivial for you to leverage our oracle technology straight away. -If you're using the __[Remix IDE](http://remix.ethereum.org)__ it's even easier still - simply import __Oraclize__ into your contract like so: +If you're using the __[Remix IDE](http://remix.ethereum.org)__ it's even easier still - simply import __Provable__ into your contract like so: ```solidity -import "github.com/oraclize/ethereum-api/oraclizeAPI.sol"; +import "github.com/oraclize/ethereum-api/provableAPI.sol"; ``` -To learn more about the Oraclize technology, please refer to our __[documentation here](https://docs.oraclize.it)__. +To learn more about the Provable technology, please refer to our __[documentation here](https://docs.oraclize.it)__.   @@ -26,9 +26,9 @@ To learn more about the Oraclize technology, please refer to our __[documentatio ### :computer: See It In Action! -For working examples of how to integrate the __Oraclize__ API into your own smart-contracts, head on over to the __[Oraclize Examples](https://github.com/oraclize/ethereum-examples)__ repository. Here you'll find various examples that use __Oraclize__ to feed smart-contracts with data from a variety of external sources. +For working examples of how to integrate the __Provable__ API into your own smart-contracts, head on over to the __[Provable Ethereum Examples](https://github.com/oraclize/ethereum-examples)__ repository. Here you'll find various examples that use __Provable__ to feed smart-contracts with data from a variety of external sources. -There are even __[some examples here](https://github.com/oraclize/ethereum-examples/tree/master/solidity/truffle-examples)__ showing you how you can use __Oraclize__ in a local Truffle development environment! +There are even __[some examples here](https://github.com/oraclize/ethereum-examples/tree/master/solidity/truffle-examples)__ showing you how you can use __Provable__ in a local Truffle development environment!   @@ -56,6 +56,10 @@ __❍__ Plus a __[Github](https://github.com/oraclize)__   +### :hourglass_flowing_sand: __Notice about Oraclize rebranding to Provable:__ + +Please use the __`provableAPI_0.X.sol`__ contracts going forward. We will continue supporting the oraclize-named versions for a limited time, but they should be considered deprecated and to be removed in the coming months. + ### :radioactive: __A Note Regarding Serpent:__ -:skull: __CAUTION__: It is highly recommended to avoid using Serpent, especially in production. The serpent version of the __Oraclize__ API herein remains for historical reasons but support for it is no longer maintained. Serpent is considered outdated and audits have shown it to be flawed. Use it at your own risk! +:skull: __CAUTION__: It is highly recommended to avoid using Serpent, especially in production. The serpent version of the __Provable__ API herein remains for historical reasons but support for it is no longer maintained. Serpent is considered outdated and audits have shown it to be flawed. Use it at your own risk! diff --git a/oraclizeAPI.se b/oraclizeAPI.se index f86b36a..b84c8a9 100644 --- a/oraclizeAPI.se +++ b/oraclizeAPI.se @@ -6,7 +6,8 @@ # https://github.com/oraclize/ethereum-api/blob/master/oraclizeAPI.sol # Copyright (c) 2015-2016 Oraclize SRL -# Copyright (c) 2016 Oraclize LTD +# Copyright (c) 2016-2019 Oraclize LTD +# Copyright (c) 2019 Provable Things Limited diff --git a/oraclizeAPI_0.5.sol b/oraclizeAPI_0.5.sol index 72c8f5c..d104c2f 100644 --- a/oraclizeAPI_0.5.sol +++ b/oraclizeAPI_0.5.sol @@ -1,1347 +1,1347 @@ -/* - -ORACLIZE_API - -Copyright (c) 2015-2016 Oraclize SRL -Copyright (c) 2016 Oraclize LTD - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. - -*/ -pragma solidity >= 0.5.0 < 0.6.0; // Incompatible compiler version - please select a compiler within the stated pragma range, or use a different version of the oraclizeAPI! - -// Dummy contract only used to emit to end-user they are using wrong solc -contract solcChecker { -/* INCOMPATIBLE SOLC: import the following instead: "github.com/oraclize/ethereum-api/oraclizeAPI_0.4.sol" */ function f(bytes calldata x) external; -} - -contract OraclizeI { - - address public cbAddress; - - function setProofType(byte _proofType) external; - function setCustomGasPrice(uint _gasPrice) external; - function getPrice(string memory _datasource) public returns (uint _dsprice); - function randomDS_getSessionPubKeyHash() external view returns (bytes32 _sessionKeyHash); - function getPrice(string memory _datasource, uint _gasLimit) public returns (uint _dsprice); - function queryN(uint _timestamp, string memory _datasource, bytes memory _argN) public payable returns (bytes32 _id); - function query(uint _timestamp, string calldata _datasource, string calldata _arg) external payable returns (bytes32 _id); - function query2(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2) public payable returns (bytes32 _id); - function query_withGasLimit(uint _timestamp, string calldata _datasource, string calldata _arg, uint _gasLimit) external payable returns (bytes32 _id); - function queryN_withGasLimit(uint _timestamp, string calldata _datasource, bytes calldata _argN, uint _gasLimit) external payable returns (bytes32 _id); - function query2_withGasLimit(uint _timestamp, string calldata _datasource, string calldata _arg1, string calldata _arg2, uint _gasLimit) external payable returns (bytes32 _id); -} - -contract OraclizeAddrResolverI { - function getAddress() public returns (address _address); -} -/* - -Begin solidity-cborutils - -https://github.com/smartcontractkit/solidity-cborutils - -MIT License - -Copyright (c) 2018 SmartContract ChainLink, Ltd. - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. - -*/ -library Buffer { - - struct buffer { - bytes buf; - uint capacity; - } - - function init(buffer memory _buf, uint _capacity) internal pure { - uint capacity = _capacity; - if (capacity % 32 != 0) { - capacity += 32 - (capacity % 32); - } - _buf.capacity = capacity; // Allocate space for the buffer data - assembly { - let ptr := mload(0x40) - mstore(_buf, ptr) - mstore(ptr, 0) - mstore(0x40, add(ptr, capacity)) - } - } - - function resize(buffer memory _buf, uint _capacity) private pure { - bytes memory oldbuf = _buf.buf; - init(_buf, _capacity); - append(_buf, oldbuf); - } - - function max(uint _a, uint _b) private pure returns (uint _max) { - if (_a > _b) { - return _a; - } - return _b; - } - /** - * @dev Appends a byte array to the end of the buffer. Resizes if doing so - * would exceed the capacity of the buffer. - * @param _buf The buffer to append to. - * @param _data The data to append. - * @return The original buffer. - * - */ - function append(buffer memory _buf, bytes memory _data) internal pure returns (buffer memory _buffer) { - if (_data.length + _buf.buf.length > _buf.capacity) { - resize(_buf, max(_buf.capacity, _data.length) * 2); - } - uint dest; - uint src; - uint len = _data.length; - assembly { - let bufptr := mload(_buf) // Memory address of the buffer data - let buflen := mload(bufptr) // Length of existing buffer data - dest := add(add(bufptr, buflen), 32) // Start address = buffer address + buffer length + sizeof(buffer length) - mstore(bufptr, add(buflen, mload(_data))) // Update buffer length - src := add(_data, 32) - } - for(; len >= 32; len -= 32) { // Copy word-length chunks while possible - assembly { - mstore(dest, mload(src)) - } - dest += 32; - src += 32; - } - uint mask = 256 ** (32 - len) - 1; // Copy remaining bytes - assembly { - let srcpart := and(mload(src), not(mask)) - let destpart := and(mload(dest), mask) - mstore(dest, or(destpart, srcpart)) - } - return _buf; - } - /** - * - * @dev Appends a byte to the end of the buffer. Resizes if doing so would - * exceed the capacity of the buffer. - * @param _buf The buffer to append to. - * @param _data The data to append. - * @return The original buffer. - * - */ - function append(buffer memory _buf, uint8 _data) internal pure { - if (_buf.buf.length + 1 > _buf.capacity) { - resize(_buf, _buf.capacity * 2); - } - assembly { - let bufptr := mload(_buf) // Memory address of the buffer data - let buflen := mload(bufptr) // Length of existing buffer data - let dest := add(add(bufptr, buflen), 32) // Address = buffer address + buffer length + sizeof(buffer length) - mstore8(dest, _data) - mstore(bufptr, add(buflen, 1)) // Update buffer length - } - } - /** - * - * @dev Appends a byte to the end of the buffer. Resizes if doing so would - * exceed the capacity of the buffer. - * @param _buf The buffer to append to. - * @param _data The data to append. - * @return The original buffer. - * - */ - function appendInt(buffer memory _buf, uint _data, uint _len) internal pure returns (buffer memory _buffer) { - if (_len + _buf.buf.length > _buf.capacity) { - resize(_buf, max(_buf.capacity, _len) * 2); - } - uint mask = 256 ** _len - 1; - assembly { - let bufptr := mload(_buf) // Memory address of the buffer data - let buflen := mload(bufptr) // Length of existing buffer data - let dest := add(add(bufptr, buflen), _len) // Address = buffer address + buffer length + sizeof(buffer length) + len - mstore(dest, or(and(mload(dest), not(mask)), _data)) - mstore(bufptr, add(buflen, _len)) // Update buffer length - } - return _buf; - } -} - -library CBOR { - - using Buffer for Buffer.buffer; - - uint8 private constant MAJOR_TYPE_INT = 0; - uint8 private constant MAJOR_TYPE_MAP = 5; - uint8 private constant MAJOR_TYPE_BYTES = 2; - uint8 private constant MAJOR_TYPE_ARRAY = 4; - uint8 private constant MAJOR_TYPE_STRING = 3; - uint8 private constant MAJOR_TYPE_NEGATIVE_INT = 1; - uint8 private constant MAJOR_TYPE_CONTENT_FREE = 7; - - function encodeType(Buffer.buffer memory _buf, uint8 _major, uint _value) private pure { - if (_value <= 23) { - _buf.append(uint8((_major << 5) | _value)); - } else if (_value <= 0xFF) { - _buf.append(uint8((_major << 5) | 24)); - _buf.appendInt(_value, 1); - } else if (_value <= 0xFFFF) { - _buf.append(uint8((_major << 5) | 25)); - _buf.appendInt(_value, 2); - } else if (_value <= 0xFFFFFFFF) { - _buf.append(uint8((_major << 5) | 26)); - _buf.appendInt(_value, 4); - } else if (_value <= 0xFFFFFFFFFFFFFFFF) { - _buf.append(uint8((_major << 5) | 27)); - _buf.appendInt(_value, 8); - } - } - - function encodeIndefiniteLengthType(Buffer.buffer memory _buf, uint8 _major) private pure { - _buf.append(uint8((_major << 5) | 31)); - } - - function encodeUInt(Buffer.buffer memory _buf, uint _value) internal pure { - encodeType(_buf, MAJOR_TYPE_INT, _value); - } - - function encodeInt(Buffer.buffer memory _buf, int _value) internal pure { - if (_value >= 0) { - encodeType(_buf, MAJOR_TYPE_INT, uint(_value)); - } else { - encodeType(_buf, MAJOR_TYPE_NEGATIVE_INT, uint(-1 - _value)); - } - } - - function encodeBytes(Buffer.buffer memory _buf, bytes memory _value) internal pure { - encodeType(_buf, MAJOR_TYPE_BYTES, _value.length); - _buf.append(_value); - } - - function encodeString(Buffer.buffer memory _buf, string memory _value) internal pure { - encodeType(_buf, MAJOR_TYPE_STRING, bytes(_value).length); - _buf.append(bytes(_value)); - } - - function startArray(Buffer.buffer memory _buf) internal pure { - encodeIndefiniteLengthType(_buf, MAJOR_TYPE_ARRAY); - } - - function startMap(Buffer.buffer memory _buf) internal pure { - encodeIndefiniteLengthType(_buf, MAJOR_TYPE_MAP); - } - - function endSequence(Buffer.buffer memory _buf) internal pure { - encodeIndefiniteLengthType(_buf, MAJOR_TYPE_CONTENT_FREE); - } -} -/* - -End solidity-cborutils - -*/ -contract usingOraclize { - - using CBOR for Buffer.buffer; - - OraclizeI oraclize; - OraclizeAddrResolverI OAR; - - uint constant day = 60 * 60 * 24; - uint constant week = 60 * 60 * 24 * 7; - uint constant month = 60 * 60 * 24 * 30; - - byte constant proofType_NONE = 0x00; - byte constant proofType_Ledger = 0x30; - byte constant proofType_Native = 0xF0; - byte constant proofStorage_IPFS = 0x01; - byte constant proofType_Android = 0x40; - byte constant proofType_TLSNotary = 0x10; - - string oraclize_network_name; - uint8 constant networkID_auto = 0; - uint8 constant networkID_morden = 2; - uint8 constant networkID_mainnet = 1; - uint8 constant networkID_testnet = 2; - uint8 constant networkID_consensys = 161; - - mapping(bytes32 => bytes32) oraclize_randomDS_args; - mapping(bytes32 => bool) oraclize_randomDS_sessionKeysHashVerified; - - modifier oraclizeAPI { - if ((address(OAR) == address(0)) || (getCodeSize(address(OAR)) == 0)) { - oraclize_setNetwork(networkID_auto); - } - if (address(oraclize) != OAR.getAddress()) { - oraclize = OraclizeI(OAR.getAddress()); - } - _; - } - - modifier oraclize_randomDS_proofVerify(bytes32 _queryId, string memory _result, bytes memory _proof) { - // RandomDS Proof Step 1: The prefix has to match 'LP\x01' (Ledger Proof version 1) - require((_proof[0] == "L") && (_proof[1] == "P") && (uint8(_proof[2]) == uint8(1))); - bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); - require(proofVerified); - _; - } - - function oraclize_setNetwork(uint8 _networkID) internal returns (bool _networkSet) { - _networkID; // NOTE: Silence the warning and remain backwards compatible - return oraclize_setNetwork(); - } - - function oraclize_setNetworkName(string memory _network_name) internal { - oraclize_network_name = _network_name; - } - - function oraclize_getNetworkName() internal view returns (string memory _networkName) { - return oraclize_network_name; - } - - function oraclize_setNetwork() internal returns (bool _networkSet) { - if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed) > 0) { //mainnet - OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed); - oraclize_setNetworkName("eth_mainnet"); - return true; - } - if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1) > 0) { //ropsten testnet - OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1); - oraclize_setNetworkName("eth_ropsten3"); - return true; - } - if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e) > 0) { //kovan testnet - OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e); - oraclize_setNetworkName("eth_kovan"); - return true; - } - if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48) > 0) { //rinkeby testnet - OAR = OraclizeAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48); - oraclize_setNetworkName("eth_rinkeby"); - return true; - } - if (getCodeSize(0xa2998EFD205FB9D4B4963aFb70778D6354ad3A41) > 0) { //goerli testnet - OAR = OraclizeAddrResolverI(0xa2998EFD205FB9D4B4963aFb70778D6354ad3A41); - oraclize_setNetworkName("eth_goerli"); - return true; - } - if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475) > 0) { //ethereum-bridge - OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475); - return true; - } - if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF) > 0) { //ether.camp ide - OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF); - return true; - } - if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA) > 0) { //browser-solidity - OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA); - return true; - } - return false; - } - /** - * @dev The following `__callback` functions are just placeholders ideally - * meant to be defined in child contract when proofs are used. - * The function bodies simply silence compiler warnings. - */ - function __callback(bytes32 _myid, string memory _result) public { - __callback(_myid, _result, new bytes(0)); - } - - function __callback(bytes32 _myid, string memory _result, bytes memory _proof) public { - _myid; _result; _proof; - oraclize_randomDS_args[bytes32(0)] = bytes32(0); - } - - function oraclize_getPrice(string memory _datasource) oraclizeAPI internal returns (uint _queryPrice) { - return oraclize.getPrice(_datasource); - } - - function oraclize_getPrice(string memory _datasource, uint _gasLimit) oraclizeAPI internal returns (uint _queryPrice) { - return oraclize.getPrice(_datasource, _gasLimit); - } - - function oraclize_query(string memory _datasource, string memory _arg) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource); - if (price > 1 ether + tx.gasprice * 200000) { - return 0; // Unexpectedly high price - } - return oraclize.query.value(price)(0, _datasource, _arg); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string memory _arg) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource); - if (price > 1 ether + tx.gasprice * 200000) { - return 0; // Unexpectedly high price - } - return oraclize.query.value(price)(_timestamp, _datasource, _arg); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string memory _arg, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource,_gasLimit); - if (price > 1 ether + tx.gasprice * _gasLimit) { - return 0; // Unexpectedly high price - } - return oraclize.query_withGasLimit.value(price)(_timestamp, _datasource, _arg, _gasLimit); - } - - function oraclize_query(string memory _datasource, string memory _arg, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource, _gasLimit); - if (price > 1 ether + tx.gasprice * _gasLimit) { - return 0; // Unexpectedly high price - } - return oraclize.query_withGasLimit.value(price)(0, _datasource, _arg, _gasLimit); - } - - function oraclize_query(string memory _datasource, string memory _arg1, string memory _arg2) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource); - if (price > 1 ether + tx.gasprice * 200000) { - return 0; // Unexpectedly high price - } - return oraclize.query2.value(price)(0, _datasource, _arg1, _arg2); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource); - if (price > 1 ether + tx.gasprice * 200000) { - return 0; // Unexpectedly high price - } - return oraclize.query2.value(price)(_timestamp, _datasource, _arg1, _arg2); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource, _gasLimit); - if (price > 1 ether + tx.gasprice * _gasLimit) { - return 0; // Unexpectedly high price - } - return oraclize.query2_withGasLimit.value(price)(_timestamp, _datasource, _arg1, _arg2, _gasLimit); - } - - function oraclize_query(string memory _datasource, string memory _arg1, string memory _arg2, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource, _gasLimit); - if (price > 1 ether + tx.gasprice * _gasLimit) { - return 0; // Unexpectedly high price - } - return oraclize.query2_withGasLimit.value(price)(0, _datasource, _arg1, _arg2, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[] memory _argN) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource); - if (price > 1 ether + tx.gasprice * 200000) { - return 0; // Unexpectedly high price - } - bytes memory args = stra2cbor(_argN); - return oraclize.queryN.value(price)(0, _datasource, args); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[] memory _argN) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource); - if (price > 1 ether + tx.gasprice * 200000) { - return 0; // Unexpectedly high price - } - bytes memory args = stra2cbor(_argN); - return oraclize.queryN.value(price)(_timestamp, _datasource, args); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[] memory _argN, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource, _gasLimit); - if (price > 1 ether + tx.gasprice * _gasLimit) { - return 0; // Unexpectedly high price - } - bytes memory args = stra2cbor(_argN); - return oraclize.queryN_withGasLimit.value(price)(_timestamp, _datasource, args, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[] memory _argN, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource, _gasLimit); - if (price > 1 ether + tx.gasprice * _gasLimit) { - return 0; // Unexpectedly high price - } - bytes memory args = stra2cbor(_argN); - return oraclize.queryN_withGasLimit.value(price)(0, _datasource, args, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[1] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](1); - dynargs[0] = _args[0]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[1] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](1); - dynargs[0] = _args[0]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[1] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](1); - dynargs[0] = _args[0]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[1] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](1); - dynargs[0] = _args[0]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[2] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](2); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[2] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](2); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[2] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](2); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[2] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](2); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[3] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](3); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[3] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](3); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[3] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](3); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[3] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](3); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[4] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](4); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[4] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](4); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[4] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](4); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[4] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](4); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[5] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](5); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - dynargs[4] = _args[4]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[5] memory _args) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](5); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - dynargs[4] = _args[4]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, string[5] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](5); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - dynargs[4] = _args[4]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, string[5] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - string[] memory dynargs = new string[](5); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - dynargs[4] = _args[4]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[] memory _argN) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource); - if (price > 1 ether + tx.gasprice * 200000) { - return 0; // Unexpectedly high price - } - bytes memory args = ba2cbor(_argN); - return oraclize.queryN.value(price)(0, _datasource, args); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[] memory _argN) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource); - if (price > 1 ether + tx.gasprice * 200000) { - return 0; // Unexpectedly high price - } - bytes memory args = ba2cbor(_argN); - return oraclize.queryN.value(price)(_timestamp, _datasource, args); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[] memory _argN, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource, _gasLimit); - if (price > 1 ether + tx.gasprice * _gasLimit) { - return 0; // Unexpectedly high price - } - bytes memory args = ba2cbor(_argN); - return oraclize.queryN_withGasLimit.value(price)(_timestamp, _datasource, args, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[] memory _argN, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - uint price = oraclize.getPrice(_datasource, _gasLimit); - if (price > 1 ether + tx.gasprice * _gasLimit) { - return 0; // Unexpectedly high price - } - bytes memory args = ba2cbor(_argN); - return oraclize.queryN_withGasLimit.value(price)(0, _datasource, args, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[1] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](1); - dynargs[0] = _args[0]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[1] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](1); - dynargs[0] = _args[0]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[1] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](1); - dynargs[0] = _args[0]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[1] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](1); - dynargs[0] = _args[0]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[2] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](2); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[2] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](2); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[2] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](2); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[2] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](2); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[3] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](3); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[3] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](3); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[3] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](3); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[3] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](3); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[4] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](4); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[4] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](4); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[4] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](4); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[4] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](4); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[5] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](5); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - dynargs[4] = _args[4]; - return oraclize_query(_datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[5] memory _args) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](5); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - dynargs[4] = _args[4]; - return oraclize_query(_timestamp, _datasource, dynargs); - } - - function oraclize_query(uint _timestamp, string memory _datasource, bytes[5] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](5); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - dynargs[4] = _args[4]; - return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); - } - - function oraclize_query(string memory _datasource, bytes[5] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { - bytes[] memory dynargs = new bytes[](5); - dynargs[0] = _args[0]; - dynargs[1] = _args[1]; - dynargs[2] = _args[2]; - dynargs[3] = _args[3]; - dynargs[4] = _args[4]; - return oraclize_query(_datasource, dynargs, _gasLimit); - } - - function oraclize_setProof(byte _proofP) oraclizeAPI internal { - return oraclize.setProofType(_proofP); - } - - - function oraclize_cbAddress() oraclizeAPI internal returns (address _callbackAddress) { - return oraclize.cbAddress(); - } - - function getCodeSize(address _addr) view internal returns (uint _size) { - assembly { - _size := extcodesize(_addr) - } - } - - function oraclize_setCustomGasPrice(uint _gasPrice) oraclizeAPI internal { - return oraclize.setCustomGasPrice(_gasPrice); - } - - function oraclize_randomDS_getSessionPubKeyHash() oraclizeAPI internal returns (bytes32 _sessionKeyHash) { - return oraclize.randomDS_getSessionPubKeyHash(); - } - - function parseAddr(string memory _a) internal pure returns (address _parsedAddress) { - bytes memory tmp = bytes(_a); - uint160 iaddr = 0; - uint160 b1; - uint160 b2; - for (uint i = 2; i < 2 + 2 * 20; i += 2) { - iaddr *= 256; - b1 = uint160(uint8(tmp[i])); - b2 = uint160(uint8(tmp[i + 1])); - if ((b1 >= 97) && (b1 <= 102)) { - b1 -= 87; - } else if ((b1 >= 65) && (b1 <= 70)) { - b1 -= 55; - } else if ((b1 >= 48) && (b1 <= 57)) { - b1 -= 48; - } - if ((b2 >= 97) && (b2 <= 102)) { - b2 -= 87; - } else if ((b2 >= 65) && (b2 <= 70)) { - b2 -= 55; - } else if ((b2 >= 48) && (b2 <= 57)) { - b2 -= 48; - } - iaddr += (b1 * 16 + b2); - } - return address(iaddr); - } - - function strCompare(string memory _a, string memory _b) internal pure returns (int _returnCode) { - bytes memory a = bytes(_a); - bytes memory b = bytes(_b); - uint minLength = a.length; - if (b.length < minLength) { - minLength = b.length; - } - for (uint i = 0; i < minLength; i ++) { - if (a[i] < b[i]) { - return -1; - } else if (a[i] > b[i]) { - return 1; - } - } - if (a.length < b.length) { - return -1; - } else if (a.length > b.length) { - return 1; - } else { - return 0; - } - } - - function indexOf(string memory _haystack, string memory _needle) internal pure returns (int _returnCode) { - bytes memory h = bytes(_haystack); - bytes memory n = bytes(_needle); - if (h.length < 1 || n.length < 1 || (n.length > h.length)) { - return -1; - } else if (h.length > (2 ** 128 - 1)) { - return -1; - } else { - uint subindex = 0; - for (uint i = 0; i < h.length; i++) { - if (h[i] == n[0]) { - subindex = 1; - while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex]) { - subindex++; - } - if (subindex == n.length) { - return int(i); - } - } - } - return -1; - } - } - - function strConcat(string memory _a, string memory _b) internal pure returns (string memory _concatenatedString) { - return strConcat(_a, _b, "", "", ""); - } - - function strConcat(string memory _a, string memory _b, string memory _c) internal pure returns (string memory _concatenatedString) { - return strConcat(_a, _b, _c, "", ""); - } - - function strConcat(string memory _a, string memory _b, string memory _c, string memory _d) internal pure returns (string memory _concatenatedString) { - return strConcat(_a, _b, _c, _d, ""); - } - - function strConcat(string memory _a, string memory _b, string memory _c, string memory _d, string memory _e) internal pure returns (string memory _concatenatedString) { - bytes memory _ba = bytes(_a); - bytes memory _bb = bytes(_b); - bytes memory _bc = bytes(_c); - bytes memory _bd = bytes(_d); - bytes memory _be = bytes(_e); - string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); - bytes memory babcde = bytes(abcde); - uint k = 0; - uint i = 0; - for (i = 0; i < _ba.length; i++) { - babcde[k++] = _ba[i]; - } - for (i = 0; i < _bb.length; i++) { - babcde[k++] = _bb[i]; - } - for (i = 0; i < _bc.length; i++) { - babcde[k++] = _bc[i]; - } - for (i = 0; i < _bd.length; i++) { - babcde[k++] = _bd[i]; - } - for (i = 0; i < _be.length; i++) { - babcde[k++] = _be[i]; - } - return string(babcde); - } - - function safeParseInt(string memory _a) internal pure returns (uint _parsedInt) { - return safeParseInt(_a, 0); - } - - function safeParseInt(string memory _a, uint _b) internal pure returns (uint _parsedInt) { - bytes memory bresult = bytes(_a); - uint mint = 0; - bool decimals = false; - for (uint i = 0; i < bresult.length; i++) { - if ((uint(uint8(bresult[i])) >= 48) && (uint(uint8(bresult[i])) <= 57)) { - if (decimals) { - if (_b == 0) break; - else _b--; - } - mint *= 10; - mint += uint(uint8(bresult[i])) - 48; - } else if (uint(uint8(bresult[i])) == 46) { - require(!decimals, 'More than one decimal encountered in string!'); - decimals = true; - } else { - revert("Non-numeral character encountered in string!"); - } - } - if (_b > 0) { - mint *= 10 ** _b; - } - return mint; - } - - function parseInt(string memory _a) internal pure returns (uint _parsedInt) { - return parseInt(_a, 0); - } - - function parseInt(string memory _a, uint _b) internal pure returns (uint _parsedInt) { - bytes memory bresult = bytes(_a); - uint mint = 0; - bool decimals = false; - for (uint i = 0; i < bresult.length; i++) { - if ((uint(uint8(bresult[i])) >= 48) && (uint(uint8(bresult[i])) <= 57)) { - if (decimals) { - if (_b == 0) { - break; - } else { - _b--; - } - } - mint *= 10; - mint += uint(uint8(bresult[i])) - 48; - } else if (uint(uint8(bresult[i])) == 46) { - decimals = true; - } - } - if (_b > 0) { - mint *= 10 ** _b; - } - return mint; - } - - function uint2str(uint _i) internal pure returns (string memory _uintAsString) { - if (_i == 0) { - return "0"; - } - uint j = _i; - uint len; - while (j != 0) { - len++; - j /= 10; - } - bytes memory bstr = new bytes(len); - uint k = len - 1; - while (_i != 0) { - bstr[k--] = byte(uint8(48 + _i % 10)); - _i /= 10; - } - return string(bstr); - } - - function stra2cbor(string[] memory _arr) internal pure returns (bytes memory _cborEncoding) { - safeMemoryCleaner(); - Buffer.buffer memory buf; - Buffer.init(buf, 1024); - buf.startArray(); - for (uint i = 0; i < _arr.length; i++) { - buf.encodeString(_arr[i]); - } - buf.endSequence(); - return buf.buf; - } - - function ba2cbor(bytes[] memory _arr) internal pure returns (bytes memory _cborEncoding) { - safeMemoryCleaner(); - Buffer.buffer memory buf; - Buffer.init(buf, 1024); - buf.startArray(); - for (uint i = 0; i < _arr.length; i++) { - buf.encodeBytes(_arr[i]); - } - buf.endSequence(); - return buf.buf; - } - - function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32 _queryId) { - require((_nbytes > 0) && (_nbytes <= 32)); - _delay *= 10; // Convert from seconds to ledger timer ticks - bytes memory nbytes = new bytes(1); - nbytes[0] = byte(uint8(_nbytes)); - bytes memory unonce = new bytes(32); - bytes memory sessionKeyHash = new bytes(32); - bytes32 sessionKeyHash_bytes32 = oraclize_randomDS_getSessionPubKeyHash(); - assembly { - mstore(unonce, 0x20) - /* - The following variables can be relaxed. - Check the relaxed random contract at https://github.com/oraclize/ethereum-examples - for an idea on how to override and replace commit hash variables. - */ - mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp))) - mstore(sessionKeyHash, 0x20) - mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32) - } - bytes memory delay = new bytes(32); - assembly { - mstore(add(delay, 0x20), _delay) - } - bytes memory delay_bytes8 = new bytes(8); - copyBytes(delay, 24, 8, delay_bytes8, 0); - bytes[4] memory args = [unonce, nbytes, sessionKeyHash, delay]; - bytes32 queryId = oraclize_query("random", args, _customGasLimit); - bytes memory delay_bytes8_left = new bytes(8); - assembly { - let x := mload(add(delay_bytes8, 0x20)) - mstore8(add(delay_bytes8_left, 0x27), div(x, 0x100000000000000000000000000000000000000000000000000000000000000)) - mstore8(add(delay_bytes8_left, 0x26), div(x, 0x1000000000000000000000000000000000000000000000000000000000000)) - mstore8(add(delay_bytes8_left, 0x25), div(x, 0x10000000000000000000000000000000000000000000000000000000000)) - mstore8(add(delay_bytes8_left, 0x24), div(x, 0x100000000000000000000000000000000000000000000000000000000)) - mstore8(add(delay_bytes8_left, 0x23), div(x, 0x1000000000000000000000000000000000000000000000000000000)) - mstore8(add(delay_bytes8_left, 0x22), div(x, 0x10000000000000000000000000000000000000000000000000000)) - mstore8(add(delay_bytes8_left, 0x21), div(x, 0x100000000000000000000000000000000000000000000000000)) - mstore8(add(delay_bytes8_left, 0x20), div(x, 0x1000000000000000000000000000000000000000000000000)) - } - oraclize_randomDS_setCommitment(queryId, keccak256(abi.encodePacked(delay_bytes8_left, args[1], sha256(args[0]), args[2]))); - return queryId; - } - - function oraclize_randomDS_setCommitment(bytes32 _queryId, bytes32 _commitment) internal { - oraclize_randomDS_args[_queryId] = _commitment; - } - - function verifySig(bytes32 _tosignh, bytes memory _dersig, bytes memory _pubkey) internal returns (bool _sigVerified) { - bool sigok; - address signer; - bytes32 sigr; - bytes32 sigs; - bytes memory sigr_ = new bytes(32); - uint offset = 4 + (uint(uint8(_dersig[3])) - 0x20); - sigr_ = copyBytes(_dersig, offset, 32, sigr_, 0); - bytes memory sigs_ = new bytes(32); - offset += 32 + 2; - sigs_ = copyBytes(_dersig, offset + (uint(uint8(_dersig[offset - 1])) - 0x20), 32, sigs_, 0); - assembly { - sigr := mload(add(sigr_, 32)) - sigs := mload(add(sigs_, 32)) - } - (sigok, signer) = safer_ecrecover(_tosignh, 27, sigr, sigs); - if (address(uint160(uint256(keccak256(_pubkey)))) == signer) { - return true; - } else { - (sigok, signer) = safer_ecrecover(_tosignh, 28, sigr, sigs); - return (address(uint160(uint256(keccak256(_pubkey)))) == signer); - } - } - - function oraclize_randomDS_proofVerify__sessionKeyValidity(bytes memory _proof, uint _sig2offset) internal returns (bool _proofVerified) { - bool sigok; - // Random DS Proof Step 6: Verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH) - bytes memory sig2 = new bytes(uint(uint8(_proof[_sig2offset + 1])) + 2); - copyBytes(_proof, _sig2offset, sig2.length, sig2, 0); - bytes memory appkey1_pubkey = new bytes(64); - copyBytes(_proof, 3 + 1, 64, appkey1_pubkey, 0); - bytes memory tosign2 = new bytes(1 + 65 + 32); - tosign2[0] = byte(uint8(1)); //role - copyBytes(_proof, _sig2offset - 65, 65, tosign2, 1); - bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c"; - copyBytes(CODEHASH, 0, 32, tosign2, 1 + 65); - sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey); - if (!sigok) { - return false; - } - // Random DS Proof Step 7: Verify the APPKEY1 provenance (must be signed by Ledger) - bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4"; - bytes memory tosign3 = new bytes(1 + 65); - tosign3[0] = 0xFE; - copyBytes(_proof, 3, 65, tosign3, 1); - bytes memory sig3 = new bytes(uint(uint8(_proof[3 + 65 + 1])) + 2); - copyBytes(_proof, 3 + 65, sig3.length, sig3, 0); - sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY); - return sigok; - } - - function oraclize_randomDS_proofVerify__returnCode(bytes32 _queryId, string memory _result, bytes memory _proof) internal returns (uint8 _returnCode) { - // Random DS Proof Step 1: The prefix has to match 'LP\x01' (Ledger Proof version 1) - if ((_proof[0] != "L") || (_proof[1] != "P") || (uint8(_proof[2]) != uint8(1))) { - return 1; - } - bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); - if (!proofVerified) { - return 2; - } - return 0; - } - - function matchBytes32Prefix(bytes32 _content, bytes memory _prefix, uint _nRandomBytes) internal pure returns (bool _matchesPrefix) { - bool match_ = true; - require(_prefix.length == _nRandomBytes); - for (uint256 i = 0; i< _nRandomBytes; i++) { - if (_content[i] != _prefix[i]) { - match_ = false; - } - } - return match_; - } - - function oraclize_randomDS_proofVerify__main(bytes memory _proof, bytes32 _queryId, bytes memory _result, string memory _contextName) internal returns (bool _proofVerified) { - // Random DS Proof Step 2: The unique keyhash has to match with the sha256 of (context name + _queryId) - uint ledgerProofLength = 3 + 65 + (uint(uint8(_proof[3 + 65 + 1])) + 2) + 32; - bytes memory keyhash = new bytes(32); - copyBytes(_proof, ledgerProofLength, 32, keyhash, 0); - if (!(keccak256(keyhash) == keccak256(abi.encodePacked(sha256(abi.encodePacked(_contextName, _queryId)))))) { - return false; - } - bytes memory sig1 = new bytes(uint(uint8(_proof[ledgerProofLength + (32 + 8 + 1 + 32) + 1])) + 2); - copyBytes(_proof, ledgerProofLength + (32 + 8 + 1 + 32), sig1.length, sig1, 0); - // Random DS Proof Step 3: We assume sig1 is valid (it will be verified during step 5) and we verify if '_result' is the _prefix of sha256(sig1) - if (!matchBytes32Prefix(sha256(sig1), _result, uint(uint8(_proof[ledgerProofLength + 32 + 8])))) { - return false; - } - // Random DS Proof Step 4: Commitment match verification, keccak256(delay, nbytes, unonce, sessionKeyHash) == commitment in storage. - // This is to verify that the computed args match with the ones specified in the query. - bytes memory commitmentSlice1 = new bytes(8 + 1 + 32); - copyBytes(_proof, ledgerProofLength + 32, 8 + 1 + 32, commitmentSlice1, 0); - bytes memory sessionPubkey = new bytes(64); - uint sig2offset = ledgerProofLength + 32 + (8 + 1 + 32) + sig1.length + 65; - copyBytes(_proof, sig2offset - 64, 64, sessionPubkey, 0); - bytes32 sessionPubkeyHash = sha256(sessionPubkey); - if (oraclize_randomDS_args[_queryId] == keccak256(abi.encodePacked(commitmentSlice1, sessionPubkeyHash))) { //unonce, nbytes and sessionKeyHash match - delete oraclize_randomDS_args[_queryId]; - } else return false; - // Random DS Proof Step 5: Validity verification for sig1 (keyhash and args signed with the sessionKey) - bytes memory tosign1 = new bytes(32 + 8 + 1 + 32); - copyBytes(_proof, ledgerProofLength, 32 + 8 + 1 + 32, tosign1, 0); - if (!verifySig(sha256(tosign1), sig1, sessionPubkey)) { - return false; - } - // Verify if sessionPubkeyHash was verified already, if not.. let's do it! - if (!oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash]) { - oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = oraclize_randomDS_proofVerify__sessionKeyValidity(_proof, sig2offset); - } - return oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash]; - } - /* - The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license - */ - function copyBytes(bytes memory _from, uint _fromOffset, uint _length, bytes memory _to, uint _toOffset) internal pure returns (bytes memory _copiedBytes) { - uint minLength = _length + _toOffset; - require(_to.length >= minLength); // Buffer too small. Should be a better way? - uint i = 32 + _fromOffset; // NOTE: the offset 32 is added to skip the `size` field of both bytes variables - uint j = 32 + _toOffset; - while (i < (32 + _fromOffset + _length)) { - assembly { - let tmp := mload(add(_from, i)) - mstore(add(_to, j), tmp) - } - i += 32; - j += 32; - } - return _to; - } - /* - The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license - Duplicate Solidity's ecrecover, but catching the CALL return value - */ - function safer_ecrecover(bytes32 _hash, uint8 _v, bytes32 _r, bytes32 _s) internal returns (bool _success, address _recoveredAddress) { - /* - We do our own memory management here. Solidity uses memory offset - 0x40 to store the current end of memory. We write past it (as - writes are memory extensions), but don't update the offset so - Solidity will reuse it. The memory used here is only needed for - this context. - FIXME: inline assembly can't access return values - */ - bool ret; - address addr; - assembly { - let size := mload(0x40) - mstore(size, _hash) - mstore(add(size, 32), _v) - mstore(add(size, 64), _r) - mstore(add(size, 96), _s) - ret := call(3000, 1, 0, size, 128, size, 32) // NOTE: we can reuse the request memory because we deal with the return code. - addr := mload(size) - } - return (ret, addr); - } - /* - The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license - */ - function ecrecovery(bytes32 _hash, bytes memory _sig) internal returns (bool _success, address _recoveredAddress) { - bytes32 r; - bytes32 s; - uint8 v; - if (_sig.length != 65) { - return (false, address(0)); - } - /* - The signature format is a compact form of: - {bytes32 r}{bytes32 s}{uint8 v} - Compact means, uint8 is not padded to 32 bytes. - */ - assembly { - r := mload(add(_sig, 32)) - s := mload(add(_sig, 64)) - /* - Here we are loading the last 32 bytes. We exploit the fact that - 'mload' will pad with zeroes if we overread. - There is no 'mload8' to do this, but that would be nicer. - */ - v := byte(0, mload(add(_sig, 96))) - /* - Alternative solution: - 'byte' is not working due to the Solidity parser, so lets - use the second best option, 'and' - v := and(mload(add(_sig, 65)), 255) - */ - } - /* - albeit non-transactional signatures are not specified by the YP, one would expect it - to match the YP range of [27, 28] - geth uses [0, 1] and some clients have followed. This might change, see: - https://github.com/ethereum/go-ethereum/issues/2053 - */ - if (v < 27) { - v += 27; - } - if (v != 27 && v != 28) { - return (false, address(0)); - } - return safer_ecrecover(_hash, v, r, s); - } - - function safeMemoryCleaner() internal pure { - assembly { - let fmem := mload(0x40) - codecopy(fmem, codesize, sub(msize, fmem)) - } - } -} -/* - -END ORACLIZE_API - -*/ +/* + +ORACLIZE_API + +Copyright (c) 2015-2016 Oraclize SRL +Copyright (c) 2016 Oraclize LTD + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. + +*/ +pragma solidity >= 0.5.0 < 0.6.0; // Incompatible compiler version - please select a compiler within the stated pragma range, or use a different version of the oraclizeAPI! + +// Dummy contract only used to emit to end-user they are using wrong solc +contract solcChecker { +/* INCOMPATIBLE SOLC: import the following instead: "github.com/oraclize/ethereum-api/oraclizeAPI_0.4.sol" */ function f(bytes calldata x) external; +} + +contract OraclizeI { + + address public cbAddress; + + function setProofType(byte _proofType) external; + function setCustomGasPrice(uint _gasPrice) external; + function getPrice(string memory _datasource) public returns (uint _dsprice); + function randomDS_getSessionPubKeyHash() external view returns (bytes32 _sessionKeyHash); + function getPrice(string memory _datasource, uint _gasLimit) public returns (uint _dsprice); + function queryN(uint _timestamp, string memory _datasource, bytes memory _argN) public payable returns (bytes32 _id); + function query(uint _timestamp, string calldata _datasource, string calldata _arg) external payable returns (bytes32 _id); + function query2(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2) public payable returns (bytes32 _id); + function query_withGasLimit(uint _timestamp, string calldata _datasource, string calldata _arg, uint _gasLimit) external payable returns (bytes32 _id); + function queryN_withGasLimit(uint _timestamp, string calldata _datasource, bytes calldata _argN, uint _gasLimit) external payable returns (bytes32 _id); + function query2_withGasLimit(uint _timestamp, string calldata _datasource, string calldata _arg1, string calldata _arg2, uint _gasLimit) external payable returns (bytes32 _id); +} + +contract OraclizeAddrResolverI { + function getAddress() public returns (address _address); +} +/* + +Begin solidity-cborutils + +https://github.com/smartcontractkit/solidity-cborutils + +MIT License + +Copyright (c) 2018 SmartContract ChainLink, Ltd. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +*/ +library Buffer { + + struct buffer { + bytes buf; + uint capacity; + } + + function init(buffer memory _buf, uint _capacity) internal pure { + uint capacity = _capacity; + if (capacity % 32 != 0) { + capacity += 32 - (capacity % 32); + } + _buf.capacity = capacity; // Allocate space for the buffer data + assembly { + let ptr := mload(0x40) + mstore(_buf, ptr) + mstore(ptr, 0) + mstore(0x40, add(ptr, capacity)) + } + } + + function resize(buffer memory _buf, uint _capacity) private pure { + bytes memory oldbuf = _buf.buf; + init(_buf, _capacity); + append(_buf, oldbuf); + } + + function max(uint _a, uint _b) private pure returns (uint _max) { + if (_a > _b) { + return _a; + } + return _b; + } + /** + * @dev Appends a byte array to the end of the buffer. Resizes if doing so + * would exceed the capacity of the buffer. + * @param _buf The buffer to append to. + * @param _data The data to append. + * @return The original buffer. + * + */ + function append(buffer memory _buf, bytes memory _data) internal pure returns (buffer memory _buffer) { + if (_data.length + _buf.buf.length > _buf.capacity) { + resize(_buf, max(_buf.capacity, _data.length) * 2); + } + uint dest; + uint src; + uint len = _data.length; + assembly { + let bufptr := mload(_buf) // Memory address of the buffer data + let buflen := mload(bufptr) // Length of existing buffer data + dest := add(add(bufptr, buflen), 32) // Start address = buffer address + buffer length + sizeof(buffer length) + mstore(bufptr, add(buflen, mload(_data))) // Update buffer length + src := add(_data, 32) + } + for(; len >= 32; len -= 32) { // Copy word-length chunks while possible + assembly { + mstore(dest, mload(src)) + } + dest += 32; + src += 32; + } + uint mask = 256 ** (32 - len) - 1; // Copy remaining bytes + assembly { + let srcpart := and(mload(src), not(mask)) + let destpart := and(mload(dest), mask) + mstore(dest, or(destpart, srcpart)) + } + return _buf; + } + /** + * + * @dev Appends a byte to the end of the buffer. Resizes if doing so would + * exceed the capacity of the buffer. + * @param _buf The buffer to append to. + * @param _data The data to append. + * @return The original buffer. + * + */ + function append(buffer memory _buf, uint8 _data) internal pure { + if (_buf.buf.length + 1 > _buf.capacity) { + resize(_buf, _buf.capacity * 2); + } + assembly { + let bufptr := mload(_buf) // Memory address of the buffer data + let buflen := mload(bufptr) // Length of existing buffer data + let dest := add(add(bufptr, buflen), 32) // Address = buffer address + buffer length + sizeof(buffer length) + mstore8(dest, _data) + mstore(bufptr, add(buflen, 1)) // Update buffer length + } + } + /** + * + * @dev Appends a byte to the end of the buffer. Resizes if doing so would + * exceed the capacity of the buffer. + * @param _buf The buffer to append to. + * @param _data The data to append. + * @return The original buffer. + * + */ + function appendInt(buffer memory _buf, uint _data, uint _len) internal pure returns (buffer memory _buffer) { + if (_len + _buf.buf.length > _buf.capacity) { + resize(_buf, max(_buf.capacity, _len) * 2); + } + uint mask = 256 ** _len - 1; + assembly { + let bufptr := mload(_buf) // Memory address of the buffer data + let buflen := mload(bufptr) // Length of existing buffer data + let dest := add(add(bufptr, buflen), _len) // Address = buffer address + buffer length + sizeof(buffer length) + len + mstore(dest, or(and(mload(dest), not(mask)), _data)) + mstore(bufptr, add(buflen, _len)) // Update buffer length + } + return _buf; + } +} + +library CBOR { + + using Buffer for Buffer.buffer; + + uint8 private constant MAJOR_TYPE_INT = 0; + uint8 private constant MAJOR_TYPE_MAP = 5; + uint8 private constant MAJOR_TYPE_BYTES = 2; + uint8 private constant MAJOR_TYPE_ARRAY = 4; + uint8 private constant MAJOR_TYPE_STRING = 3; + uint8 private constant MAJOR_TYPE_NEGATIVE_INT = 1; + uint8 private constant MAJOR_TYPE_CONTENT_FREE = 7; + + function encodeType(Buffer.buffer memory _buf, uint8 _major, uint _value) private pure { + if (_value <= 23) { + _buf.append(uint8((_major << 5) | _value)); + } else if (_value <= 0xFF) { + _buf.append(uint8((_major << 5) | 24)); + _buf.appendInt(_value, 1); + } else if (_value <= 0xFFFF) { + _buf.append(uint8((_major << 5) | 25)); + _buf.appendInt(_value, 2); + } else if (_value <= 0xFFFFFFFF) { + _buf.append(uint8((_major << 5) | 26)); + _buf.appendInt(_value, 4); + } else if (_value <= 0xFFFFFFFFFFFFFFFF) { + _buf.append(uint8((_major << 5) | 27)); + _buf.appendInt(_value, 8); + } + } + + function encodeIndefiniteLengthType(Buffer.buffer memory _buf, uint8 _major) private pure { + _buf.append(uint8((_major << 5) | 31)); + } + + function encodeUInt(Buffer.buffer memory _buf, uint _value) internal pure { + encodeType(_buf, MAJOR_TYPE_INT, _value); + } + + function encodeInt(Buffer.buffer memory _buf, int _value) internal pure { + if (_value >= 0) { + encodeType(_buf, MAJOR_TYPE_INT, uint(_value)); + } else { + encodeType(_buf, MAJOR_TYPE_NEGATIVE_INT, uint(-1 - _value)); + } + } + + function encodeBytes(Buffer.buffer memory _buf, bytes memory _value) internal pure { + encodeType(_buf, MAJOR_TYPE_BYTES, _value.length); + _buf.append(_value); + } + + function encodeString(Buffer.buffer memory _buf, string memory _value) internal pure { + encodeType(_buf, MAJOR_TYPE_STRING, bytes(_value).length); + _buf.append(bytes(_value)); + } + + function startArray(Buffer.buffer memory _buf) internal pure { + encodeIndefiniteLengthType(_buf, MAJOR_TYPE_ARRAY); + } + + function startMap(Buffer.buffer memory _buf) internal pure { + encodeIndefiniteLengthType(_buf, MAJOR_TYPE_MAP); + } + + function endSequence(Buffer.buffer memory _buf) internal pure { + encodeIndefiniteLengthType(_buf, MAJOR_TYPE_CONTENT_FREE); + } +} +/* + +End solidity-cborutils + +*/ +contract usingOraclize { + + using CBOR for Buffer.buffer; + + OraclizeI oraclize; + OraclizeAddrResolverI OAR; + + uint constant day = 60 * 60 * 24; + uint constant week = 60 * 60 * 24 * 7; + uint constant month = 60 * 60 * 24 * 30; + + byte constant proofType_NONE = 0x00; + byte constant proofType_Ledger = 0x30; + byte constant proofType_Native = 0xF0; + byte constant proofStorage_IPFS = 0x01; + byte constant proofType_Android = 0x40; + byte constant proofType_TLSNotary = 0x10; + + string oraclize_network_name; + uint8 constant networkID_auto = 0; + uint8 constant networkID_morden = 2; + uint8 constant networkID_mainnet = 1; + uint8 constant networkID_testnet = 2; + uint8 constant networkID_consensys = 161; + + mapping(bytes32 => bytes32) oraclize_randomDS_args; + mapping(bytes32 => bool) oraclize_randomDS_sessionKeysHashVerified; + + modifier oraclizeAPI { + if ((address(OAR) == address(0)) || (getCodeSize(address(OAR)) == 0)) { + oraclize_setNetwork(networkID_auto); + } + if (address(oraclize) != OAR.getAddress()) { + oraclize = OraclizeI(OAR.getAddress()); + } + _; + } + + modifier oraclize_randomDS_proofVerify(bytes32 _queryId, string memory _result, bytes memory _proof) { + // RandomDS Proof Step 1: The prefix has to match 'LP\x01' (Ledger Proof version 1) + require((_proof[0] == "L") && (_proof[1] == "P") && (uint8(_proof[2]) == uint8(1))); + bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); + require(proofVerified); + _; + } + + function oraclize_setNetwork(uint8 _networkID) internal returns (bool _networkSet) { + _networkID; // NOTE: Silence the warning and remain backwards compatible + return oraclize_setNetwork(); + } + + function oraclize_setNetworkName(string memory _network_name) internal { + oraclize_network_name = _network_name; + } + + function oraclize_getNetworkName() internal view returns (string memory _networkName) { + return oraclize_network_name; + } + + function oraclize_setNetwork() internal returns (bool _networkSet) { + if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed) > 0) { //mainnet + OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed); + oraclize_setNetworkName("eth_mainnet"); + return true; + } + if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1) > 0) { //ropsten testnet + OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1); + oraclize_setNetworkName("eth_ropsten3"); + return true; + } + if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e) > 0) { //kovan testnet + OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e); + oraclize_setNetworkName("eth_kovan"); + return true; + } + if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48) > 0) { //rinkeby testnet + OAR = OraclizeAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48); + oraclize_setNetworkName("eth_rinkeby"); + return true; + } + if (getCodeSize(0xa2998EFD205FB9D4B4963aFb70778D6354ad3A41) > 0) { //goerli testnet + OAR = OraclizeAddrResolverI(0xa2998EFD205FB9D4B4963aFb70778D6354ad3A41); + oraclize_setNetworkName("eth_goerli"); + return true; + } + if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475) > 0) { //ethereum-bridge + OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475); + return true; + } + if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF) > 0) { //ether.camp ide + OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF); + return true; + } + if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA) > 0) { //browser-solidity + OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA); + return true; + } + return false; + } + /** + * @dev The following `__callback` functions are just placeholders ideally + * meant to be defined in child contract when proofs are used. + * The function bodies simply silence compiler warnings. + */ + function __callback(bytes32 _myid, string memory _result) public { + __callback(_myid, _result, new bytes(0)); + } + + function __callback(bytes32 _myid, string memory _result, bytes memory _proof) public { + _myid; _result; _proof; + oraclize_randomDS_args[bytes32(0)] = bytes32(0); + } + + function oraclize_getPrice(string memory _datasource) oraclizeAPI internal returns (uint _queryPrice) { + return oraclize.getPrice(_datasource); + } + + function oraclize_getPrice(string memory _datasource, uint _gasLimit) oraclizeAPI internal returns (uint _queryPrice) { + return oraclize.getPrice(_datasource, _gasLimit); + } + + function oraclize_query(string memory _datasource, string memory _arg) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + return oraclize.query.value(price)(0, _datasource, _arg); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string memory _arg) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + return oraclize.query.value(price)(_timestamp, _datasource, _arg); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string memory _arg, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource,_gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + return oraclize.query_withGasLimit.value(price)(_timestamp, _datasource, _arg, _gasLimit); + } + + function oraclize_query(string memory _datasource, string memory _arg, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + return oraclize.query_withGasLimit.value(price)(0, _datasource, _arg, _gasLimit); + } + + function oraclize_query(string memory _datasource, string memory _arg1, string memory _arg2) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + return oraclize.query2.value(price)(0, _datasource, _arg1, _arg2); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + return oraclize.query2.value(price)(_timestamp, _datasource, _arg1, _arg2); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + return oraclize.query2_withGasLimit.value(price)(_timestamp, _datasource, _arg1, _arg2, _gasLimit); + } + + function oraclize_query(string memory _datasource, string memory _arg1, string memory _arg2, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + return oraclize.query2_withGasLimit.value(price)(0, _datasource, _arg1, _arg2, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[] memory _argN) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + bytes memory args = stra2cbor(_argN); + return oraclize.queryN.value(price)(0, _datasource, args); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[] memory _argN) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + bytes memory args = stra2cbor(_argN); + return oraclize.queryN.value(price)(_timestamp, _datasource, args); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[] memory _argN, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + bytes memory args = stra2cbor(_argN); + return oraclize.queryN_withGasLimit.value(price)(_timestamp, _datasource, args, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[] memory _argN, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + bytes memory args = stra2cbor(_argN); + return oraclize.queryN_withGasLimit.value(price)(0, _datasource, args, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[1] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](1); + dynargs[0] = _args[0]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[1] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](1); + dynargs[0] = _args[0]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[1] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](1); + dynargs[0] = _args[0]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[1] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](1); + dynargs[0] = _args[0]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[2] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[2] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[2] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[2] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[3] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[3] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[3] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[3] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[4] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[4] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[4] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[4] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[5] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[5] memory _args) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, string[5] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, string[5] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[] memory _argN) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + bytes memory args = ba2cbor(_argN); + return oraclize.queryN.value(price)(0, _datasource, args); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[] memory _argN) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + bytes memory args = ba2cbor(_argN); + return oraclize.queryN.value(price)(_timestamp, _datasource, args); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[] memory _argN, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + bytes memory args = ba2cbor(_argN); + return oraclize.queryN_withGasLimit.value(price)(_timestamp, _datasource, args, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[] memory _argN, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + uint price = oraclize.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + bytes memory args = ba2cbor(_argN); + return oraclize.queryN_withGasLimit.value(price)(0, _datasource, args, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[1] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = _args[0]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[1] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = _args[0]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[1] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = _args[0]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[1] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = _args[0]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[2] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[2] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[2] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[2] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[3] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[3] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[3] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[3] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[4] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[4] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[4] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[4] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[5] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return oraclize_query(_datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[5] memory _args) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return oraclize_query(_timestamp, _datasource, dynargs); + } + + function oraclize_query(uint _timestamp, string memory _datasource, bytes[5] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return oraclize_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function oraclize_query(string memory _datasource, bytes[5] memory _args, uint _gasLimit) oraclizeAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return oraclize_query(_datasource, dynargs, _gasLimit); + } + + function oraclize_setProof(byte _proofP) oraclizeAPI internal { + return oraclize.setProofType(_proofP); + } + + + function oraclize_cbAddress() oraclizeAPI internal returns (address _callbackAddress) { + return oraclize.cbAddress(); + } + + function getCodeSize(address _addr) view internal returns (uint _size) { + assembly { + _size := extcodesize(_addr) + } + } + + function oraclize_setCustomGasPrice(uint _gasPrice) oraclizeAPI internal { + return oraclize.setCustomGasPrice(_gasPrice); + } + + function oraclize_randomDS_getSessionPubKeyHash() oraclizeAPI internal returns (bytes32 _sessionKeyHash) { + return oraclize.randomDS_getSessionPubKeyHash(); + } + + function parseAddr(string memory _a) internal pure returns (address _parsedAddress) { + bytes memory tmp = bytes(_a); + uint160 iaddr = 0; + uint160 b1; + uint160 b2; + for (uint i = 2; i < 2 + 2 * 20; i += 2) { + iaddr *= 256; + b1 = uint160(uint8(tmp[i])); + b2 = uint160(uint8(tmp[i + 1])); + if ((b1 >= 97) && (b1 <= 102)) { + b1 -= 87; + } else if ((b1 >= 65) && (b1 <= 70)) { + b1 -= 55; + } else if ((b1 >= 48) && (b1 <= 57)) { + b1 -= 48; + } + if ((b2 >= 97) && (b2 <= 102)) { + b2 -= 87; + } else if ((b2 >= 65) && (b2 <= 70)) { + b2 -= 55; + } else if ((b2 >= 48) && (b2 <= 57)) { + b2 -= 48; + } + iaddr += (b1 * 16 + b2); + } + return address(iaddr); + } + + function strCompare(string memory _a, string memory _b) internal pure returns (int _returnCode) { + bytes memory a = bytes(_a); + bytes memory b = bytes(_b); + uint minLength = a.length; + if (b.length < minLength) { + minLength = b.length; + } + for (uint i = 0; i < minLength; i ++) { + if (a[i] < b[i]) { + return -1; + } else if (a[i] > b[i]) { + return 1; + } + } + if (a.length < b.length) { + return -1; + } else if (a.length > b.length) { + return 1; + } else { + return 0; + } + } + + function indexOf(string memory _haystack, string memory _needle) internal pure returns (int _returnCode) { + bytes memory h = bytes(_haystack); + bytes memory n = bytes(_needle); + if (h.length < 1 || n.length < 1 || (n.length > h.length)) { + return -1; + } else if (h.length > (2 ** 128 - 1)) { + return -1; + } else { + uint subindex = 0; + for (uint i = 0; i < h.length; i++) { + if (h[i] == n[0]) { + subindex = 1; + while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex]) { + subindex++; + } + if (subindex == n.length) { + return int(i); + } + } + } + return -1; + } + } + + function strConcat(string memory _a, string memory _b) internal pure returns (string memory _concatenatedString) { + return strConcat(_a, _b, "", "", ""); + } + + function strConcat(string memory _a, string memory _b, string memory _c) internal pure returns (string memory _concatenatedString) { + return strConcat(_a, _b, _c, "", ""); + } + + function strConcat(string memory _a, string memory _b, string memory _c, string memory _d) internal pure returns (string memory _concatenatedString) { + return strConcat(_a, _b, _c, _d, ""); + } + + function strConcat(string memory _a, string memory _b, string memory _c, string memory _d, string memory _e) internal pure returns (string memory _concatenatedString) { + bytes memory _ba = bytes(_a); + bytes memory _bb = bytes(_b); + bytes memory _bc = bytes(_c); + bytes memory _bd = bytes(_d); + bytes memory _be = bytes(_e); + string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); + bytes memory babcde = bytes(abcde); + uint k = 0; + uint i = 0; + for (i = 0; i < _ba.length; i++) { + babcde[k++] = _ba[i]; + } + for (i = 0; i < _bb.length; i++) { + babcde[k++] = _bb[i]; + } + for (i = 0; i < _bc.length; i++) { + babcde[k++] = _bc[i]; + } + for (i = 0; i < _bd.length; i++) { + babcde[k++] = _bd[i]; + } + for (i = 0; i < _be.length; i++) { + babcde[k++] = _be[i]; + } + return string(babcde); + } + + function safeParseInt(string memory _a) internal pure returns (uint _parsedInt) { + return safeParseInt(_a, 0); + } + + function safeParseInt(string memory _a, uint _b) internal pure returns (uint _parsedInt) { + bytes memory bresult = bytes(_a); + uint mint = 0; + bool decimals = false; + for (uint i = 0; i < bresult.length; i++) { + if ((uint(uint8(bresult[i])) >= 48) && (uint(uint8(bresult[i])) <= 57)) { + if (decimals) { + if (_b == 0) break; + else _b--; + } + mint *= 10; + mint += uint(uint8(bresult[i])) - 48; + } else if (uint(uint8(bresult[i])) == 46) { + require(!decimals, 'More than one decimal encountered in string!'); + decimals = true; + } else { + revert("Non-numeral character encountered in string!"); + } + } + if (_b > 0) { + mint *= 10 ** _b; + } + return mint; + } + + function parseInt(string memory _a) internal pure returns (uint _parsedInt) { + return parseInt(_a, 0); + } + + function parseInt(string memory _a, uint _b) internal pure returns (uint _parsedInt) { + bytes memory bresult = bytes(_a); + uint mint = 0; + bool decimals = false; + for (uint i = 0; i < bresult.length; i++) { + if ((uint(uint8(bresult[i])) >= 48) && (uint(uint8(bresult[i])) <= 57)) { + if (decimals) { + if (_b == 0) { + break; + } else { + _b--; + } + } + mint *= 10; + mint += uint(uint8(bresult[i])) - 48; + } else if (uint(uint8(bresult[i])) == 46) { + decimals = true; + } + } + if (_b > 0) { + mint *= 10 ** _b; + } + return mint; + } + + function uint2str(uint _i) internal pure returns (string memory _uintAsString) { + if (_i == 0) { + return "0"; + } + uint j = _i; + uint len; + while (j != 0) { + len++; + j /= 10; + } + bytes memory bstr = new bytes(len); + uint k = len - 1; + while (_i != 0) { + bstr[k--] = byte(uint8(48 + _i % 10)); + _i /= 10; + } + return string(bstr); + } + + function stra2cbor(string[] memory _arr) internal pure returns (bytes memory _cborEncoding) { + safeMemoryCleaner(); + Buffer.buffer memory buf; + Buffer.init(buf, 1024); + buf.startArray(); + for (uint i = 0; i < _arr.length; i++) { + buf.encodeString(_arr[i]); + } + buf.endSequence(); + return buf.buf; + } + + function ba2cbor(bytes[] memory _arr) internal pure returns (bytes memory _cborEncoding) { + safeMemoryCleaner(); + Buffer.buffer memory buf; + Buffer.init(buf, 1024); + buf.startArray(); + for (uint i = 0; i < _arr.length; i++) { + buf.encodeBytes(_arr[i]); + } + buf.endSequence(); + return buf.buf; + } + + function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32 _queryId) { + require((_nbytes > 0) && (_nbytes <= 32)); + _delay *= 10; // Convert from seconds to ledger timer ticks + bytes memory nbytes = new bytes(1); + nbytes[0] = byte(uint8(_nbytes)); + bytes memory unonce = new bytes(32); + bytes memory sessionKeyHash = new bytes(32); + bytes32 sessionKeyHash_bytes32 = oraclize_randomDS_getSessionPubKeyHash(); + assembly { + mstore(unonce, 0x20) + /* + The following variables can be relaxed. + Check the relaxed random contract at https://github.com/oraclize/ethereum-examples + for an idea on how to override and replace commit hash variables. + */ + mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp))) + mstore(sessionKeyHash, 0x20) + mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32) + } + bytes memory delay = new bytes(32); + assembly { + mstore(add(delay, 0x20), _delay) + } + bytes memory delay_bytes8 = new bytes(8); + copyBytes(delay, 24, 8, delay_bytes8, 0); + bytes[4] memory args = [unonce, nbytes, sessionKeyHash, delay]; + bytes32 queryId = oraclize_query("random", args, _customGasLimit); + bytes memory delay_bytes8_left = new bytes(8); + assembly { + let x := mload(add(delay_bytes8, 0x20)) + mstore8(add(delay_bytes8_left, 0x27), div(x, 0x100000000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x26), div(x, 0x1000000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x25), div(x, 0x10000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x24), div(x, 0x100000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x23), div(x, 0x1000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x22), div(x, 0x10000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x21), div(x, 0x100000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x20), div(x, 0x1000000000000000000000000000000000000000000000000)) + } + oraclize_randomDS_setCommitment(queryId, keccak256(abi.encodePacked(delay_bytes8_left, args[1], sha256(args[0]), args[2]))); + return queryId; + } + + function oraclize_randomDS_setCommitment(bytes32 _queryId, bytes32 _commitment) internal { + oraclize_randomDS_args[_queryId] = _commitment; + } + + function verifySig(bytes32 _tosignh, bytes memory _dersig, bytes memory _pubkey) internal returns (bool _sigVerified) { + bool sigok; + address signer; + bytes32 sigr; + bytes32 sigs; + bytes memory sigr_ = new bytes(32); + uint offset = 4 + (uint(uint8(_dersig[3])) - 0x20); + sigr_ = copyBytes(_dersig, offset, 32, sigr_, 0); + bytes memory sigs_ = new bytes(32); + offset += 32 + 2; + sigs_ = copyBytes(_dersig, offset + (uint(uint8(_dersig[offset - 1])) - 0x20), 32, sigs_, 0); + assembly { + sigr := mload(add(sigr_, 32)) + sigs := mload(add(sigs_, 32)) + } + (sigok, signer) = safer_ecrecover(_tosignh, 27, sigr, sigs); + if (address(uint160(uint256(keccak256(_pubkey)))) == signer) { + return true; + } else { + (sigok, signer) = safer_ecrecover(_tosignh, 28, sigr, sigs); + return (address(uint160(uint256(keccak256(_pubkey)))) == signer); + } + } + + function oraclize_randomDS_proofVerify__sessionKeyValidity(bytes memory _proof, uint _sig2offset) internal returns (bool _proofVerified) { + bool sigok; + // Random DS Proof Step 6: Verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH) + bytes memory sig2 = new bytes(uint(uint8(_proof[_sig2offset + 1])) + 2); + copyBytes(_proof, _sig2offset, sig2.length, sig2, 0); + bytes memory appkey1_pubkey = new bytes(64); + copyBytes(_proof, 3 + 1, 64, appkey1_pubkey, 0); + bytes memory tosign2 = new bytes(1 + 65 + 32); + tosign2[0] = byte(uint8(1)); //role + copyBytes(_proof, _sig2offset - 65, 65, tosign2, 1); + bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c"; + copyBytes(CODEHASH, 0, 32, tosign2, 1 + 65); + sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey); + if (!sigok) { + return false; + } + // Random DS Proof Step 7: Verify the APPKEY1 provenance (must be signed by Ledger) + bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4"; + bytes memory tosign3 = new bytes(1 + 65); + tosign3[0] = 0xFE; + copyBytes(_proof, 3, 65, tosign3, 1); + bytes memory sig3 = new bytes(uint(uint8(_proof[3 + 65 + 1])) + 2); + copyBytes(_proof, 3 + 65, sig3.length, sig3, 0); + sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY); + return sigok; + } + + function oraclize_randomDS_proofVerify__returnCode(bytes32 _queryId, string memory _result, bytes memory _proof) internal returns (uint8 _returnCode) { + // Random DS Proof Step 1: The prefix has to match 'LP\x01' (Ledger Proof version 1) + if ((_proof[0] != "L") || (_proof[1] != "P") || (uint8(_proof[2]) != uint8(1))) { + return 1; + } + bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); + if (!proofVerified) { + return 2; + } + return 0; + } + + function matchBytes32Prefix(bytes32 _content, bytes memory _prefix, uint _nRandomBytes) internal pure returns (bool _matchesPrefix) { + bool match_ = true; + require(_prefix.length == _nRandomBytes); + for (uint256 i = 0; i< _nRandomBytes; i++) { + if (_content[i] != _prefix[i]) { + match_ = false; + } + } + return match_; + } + + function oraclize_randomDS_proofVerify__main(bytes memory _proof, bytes32 _queryId, bytes memory _result, string memory _contextName) internal returns (bool _proofVerified) { + // Random DS Proof Step 2: The unique keyhash has to match with the sha256 of (context name + _queryId) + uint ledgerProofLength = 3 + 65 + (uint(uint8(_proof[3 + 65 + 1])) + 2) + 32; + bytes memory keyhash = new bytes(32); + copyBytes(_proof, ledgerProofLength, 32, keyhash, 0); + if (!(keccak256(keyhash) == keccak256(abi.encodePacked(sha256(abi.encodePacked(_contextName, _queryId)))))) { + return false; + } + bytes memory sig1 = new bytes(uint(uint8(_proof[ledgerProofLength + (32 + 8 + 1 + 32) + 1])) + 2); + copyBytes(_proof, ledgerProofLength + (32 + 8 + 1 + 32), sig1.length, sig1, 0); + // Random DS Proof Step 3: We assume sig1 is valid (it will be verified during step 5) and we verify if '_result' is the _prefix of sha256(sig1) + if (!matchBytes32Prefix(sha256(sig1), _result, uint(uint8(_proof[ledgerProofLength + 32 + 8])))) { + return false; + } + // Random DS Proof Step 4: Commitment match verification, keccak256(delay, nbytes, unonce, sessionKeyHash) == commitment in storage. + // This is to verify that the computed args match with the ones specified in the query. + bytes memory commitmentSlice1 = new bytes(8 + 1 + 32); + copyBytes(_proof, ledgerProofLength + 32, 8 + 1 + 32, commitmentSlice1, 0); + bytes memory sessionPubkey = new bytes(64); + uint sig2offset = ledgerProofLength + 32 + (8 + 1 + 32) + sig1.length + 65; + copyBytes(_proof, sig2offset - 64, 64, sessionPubkey, 0); + bytes32 sessionPubkeyHash = sha256(sessionPubkey); + if (oraclize_randomDS_args[_queryId] == keccak256(abi.encodePacked(commitmentSlice1, sessionPubkeyHash))) { //unonce, nbytes and sessionKeyHash match + delete oraclize_randomDS_args[_queryId]; + } else return false; + // Random DS Proof Step 5: Validity verification for sig1 (keyhash and args signed with the sessionKey) + bytes memory tosign1 = new bytes(32 + 8 + 1 + 32); + copyBytes(_proof, ledgerProofLength, 32 + 8 + 1 + 32, tosign1, 0); + if (!verifySig(sha256(tosign1), sig1, sessionPubkey)) { + return false; + } + // Verify if sessionPubkeyHash was verified already, if not.. let's do it! + if (!oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash]) { + oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = oraclize_randomDS_proofVerify__sessionKeyValidity(_proof, sig2offset); + } + return oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash]; + } + /* + The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + */ + function copyBytes(bytes memory _from, uint _fromOffset, uint _length, bytes memory _to, uint _toOffset) internal pure returns (bytes memory _copiedBytes) { + uint minLength = _length + _toOffset; + require(_to.length >= minLength); // Buffer too small. Should be a better way? + uint i = 32 + _fromOffset; // NOTE: the offset 32 is added to skip the `size` field of both bytes variables + uint j = 32 + _toOffset; + while (i < (32 + _fromOffset + _length)) { + assembly { + let tmp := mload(add(_from, i)) + mstore(add(_to, j), tmp) + } + i += 32; + j += 32; + } + return _to; + } + /* + The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + Duplicate Solidity's ecrecover, but catching the CALL return value + */ + function safer_ecrecover(bytes32 _hash, uint8 _v, bytes32 _r, bytes32 _s) internal returns (bool _success, address _recoveredAddress) { + /* + We do our own memory management here. Solidity uses memory offset + 0x40 to store the current end of memory. We write past it (as + writes are memory extensions), but don't update the offset so + Solidity will reuse it. The memory used here is only needed for + this context. + FIXME: inline assembly can't access return values + */ + bool ret; + address addr; + assembly { + let size := mload(0x40) + mstore(size, _hash) + mstore(add(size, 32), _v) + mstore(add(size, 64), _r) + mstore(add(size, 96), _s) + ret := call(3000, 1, 0, size, 128, size, 32) // NOTE: we can reuse the request memory because we deal with the return code. + addr := mload(size) + } + return (ret, addr); + } + /* + The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + */ + function ecrecovery(bytes32 _hash, bytes memory _sig) internal returns (bool _success, address _recoveredAddress) { + bytes32 r; + bytes32 s; + uint8 v; + if (_sig.length != 65) { + return (false, address(0)); + } + /* + The signature format is a compact form of: + {bytes32 r}{bytes32 s}{uint8 v} + Compact means, uint8 is not padded to 32 bytes. + */ + assembly { + r := mload(add(_sig, 32)) + s := mload(add(_sig, 64)) + /* + Here we are loading the last 32 bytes. We exploit the fact that + 'mload' will pad with zeroes if we overread. + There is no 'mload8' to do this, but that would be nicer. + */ + v := byte(0, mload(add(_sig, 96))) + /* + Alternative solution: + 'byte' is not working due to the Solidity parser, so lets + use the second best option, 'and' + v := and(mload(add(_sig, 65)), 255) + */ + } + /* + albeit non-transactional signatures are not specified by the YP, one would expect it + to match the YP range of [27, 28] + geth uses [0, 1] and some clients have followed. This might change, see: + https://github.com/ethereum/go-ethereum/issues/2053 + */ + if (v < 27) { + v += 27; + } + if (v != 27 && v != 28) { + return (false, address(0)); + } + return safer_ecrecover(_hash, v, r, s); + } + + function safeMemoryCleaner() internal pure { + assembly { + let fmem := mload(0x40) + codecopy(fmem, codesize, sub(msize, fmem)) + } + } +} +/* + +END ORACLIZE_API + +*/ diff --git a/package.json b/package.json index 1fe35be..f2dbb97 100644 --- a/package.json +++ b/package.json @@ -1,7 +1,7 @@ { - "name": "oraclize-eth-api", + "name": "provable-eth-api", "version": "0.5.0", - "description": "The Oraclize API - Importable in your smart-contract in order to start leveraging the Oraclize service quickly and easily!.", + "description": "The Provable (formerly Oraclize) API - Importable in your smart-contract in order to start leveraging the Provable oracle service quickly and easily!.", "repository": { "type": "git", "url": "git+https://github.com/oraclize/ethereum-api.git" @@ -10,5 +10,5 @@ "bugs": { "url": "https://github.com/oraclize/ethereum-api/issues" }, - "homepage": "http://www.oraclize.it" + "homepage": "http://provable.xyz" } diff --git a/provableAPI.sol b/provableAPI.sol new file mode 120000 index 0000000..960ec66 --- /dev/null +++ b/provableAPI.sol @@ -0,0 +1 @@ +provableAPI_0.5.sol \ No newline at end of file diff --git a/provableAPI_0.4.25.sol b/provableAPI_0.4.25.sol new file mode 100644 index 0000000..0c422c4 --- /dev/null +++ b/provableAPI_0.4.25.sol @@ -0,0 +1,1242 @@ +// +// Release targetted at solc 0.4.25 to silence compiler warning/error messages, compatible down to 0.4.22 + +/* +Copyright (c) 2015-2016 Oraclize SRL +Copyright (c) 2016-2019 Oraclize LTD +Copyright (c) 2019 Provable Things Limited + + + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + + + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + + + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +pragma solidity >= 0.4.22 < 0.5;// Incompatible compiler version... please select one stated within pragma solidity or use different provableAPI version + +contract ProvableI { + address public cbAddress; + function query(uint _timestamp, string _datasource, string _arg) external payable returns (bytes32 _id); + function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) external payable returns (bytes32 _id); + function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) public payable returns (bytes32 _id); + function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) external payable returns (bytes32 _id); + function queryN(uint _timestamp, string _datasource, bytes _argN) public payable returns (bytes32 _id); + function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) external payable returns (bytes32 _id); + function getPrice(string _datasource) public returns (uint _dsprice); + function getPrice(string _datasource, uint gaslimit) public returns (uint _dsprice); + function setProofType(byte _proofType) external; + function setCustomGasPrice(uint _gasPrice) external; + function randomDS_getSessionPubKeyHash() external constant returns(bytes32); +} + +contract OracleAddrResolverI { + function getAddress() public returns (address _addr); +} + +/* +Begin solidity-cborutils + +https://github.com/smartcontractkit/solidity-cborutils + +MIT License + +Copyright (c) 2018 SmartContract ChainLink, Ltd. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + */ + +library Buffer { + struct buffer { + bytes buf; + uint capacity; + } + + function init(buffer memory buf, uint _capacity) internal pure { + uint capacity = _capacity; + if(capacity % 32 != 0) capacity += 32 - (capacity % 32); + // Allocate space for the buffer data + buf.capacity = capacity; + assembly { + let ptr := mload(0x40) + mstore(buf, ptr) + mstore(ptr, 0) + mstore(0x40, add(ptr, capacity)) + } + } + + function resize(buffer memory buf, uint capacity) private pure { + bytes memory oldbuf = buf.buf; + init(buf, capacity); + append(buf, oldbuf); + } + + function max(uint a, uint b) private pure returns(uint) { + if(a > b) { + return a; + } + return b; + } + + /** + * @dev Appends a byte array to the end of the buffer. Resizes if doing so + * would exceed the capacity of the buffer. + * @param buf The buffer to append to. + * @param data The data to append. + * @return The original buffer. + */ + function append(buffer memory buf, bytes data) internal pure returns(buffer memory) { + if(data.length + buf.buf.length > buf.capacity) { + resize(buf, max(buf.capacity, data.length) * 2); + } + + uint dest; + uint src; + uint len = data.length; + assembly { + // Memory address of the buffer data + let bufptr := mload(buf) + // Length of existing buffer data + let buflen := mload(bufptr) + // Start address = buffer address + buffer length + sizeof(buffer length) + dest := add(add(bufptr, buflen), 32) + // Update buffer length + mstore(bufptr, add(buflen, mload(data))) + src := add(data, 32) + } + + // Copy word-length chunks while possible + for(; len >= 32; len -= 32) { + assembly { + mstore(dest, mload(src)) + } + dest += 32; + src += 32; + } + + // Copy remaining bytes + uint mask = 256 ** (32 - len) - 1; + assembly { + let srcpart := and(mload(src), not(mask)) + let destpart := and(mload(dest), mask) + mstore(dest, or(destpart, srcpart)) + } + + return buf; + } + + /** + * @dev Appends a byte to the end of the buffer. Resizes if doing so would + * exceed the capacity of the buffer. + * @param buf The buffer to append to. + * @param data The data to append. + * @return The original buffer. + */ + function append(buffer memory buf, uint8 data) internal pure { + if(buf.buf.length + 1 > buf.capacity) { + resize(buf, buf.capacity * 2); + } + + assembly { + // Memory address of the buffer data + let bufptr := mload(buf) + // Length of existing buffer data + let buflen := mload(bufptr) + // Address = buffer address + buffer length + sizeof(buffer length) + let dest := add(add(bufptr, buflen), 32) + mstore8(dest, data) + // Update buffer length + mstore(bufptr, add(buflen, 1)) + } + } + + /** + * @dev Appends a byte to the end of the buffer. Resizes if doing so would + * exceed the capacity of the buffer. + * @param buf The buffer to append to. + * @param data The data to append. + * @return The original buffer. + */ + function appendInt(buffer memory buf, uint data, uint len) internal pure returns(buffer memory) { + if(len + buf.buf.length > buf.capacity) { + resize(buf, max(buf.capacity, len) * 2); + } + + uint mask = 256 ** len - 1; + assembly { + // Memory address of the buffer data + let bufptr := mload(buf) + // Length of existing buffer data + let buflen := mload(bufptr) + // Address = buffer address + buffer length + sizeof(buffer length) + len + let dest := add(add(bufptr, buflen), len) + mstore(dest, or(and(mload(dest), not(mask)), data)) + // Update buffer length + mstore(bufptr, add(buflen, len)) + } + return buf; + } +} + +library CBOR { + using Buffer for Buffer.buffer; + + uint8 private constant MAJOR_TYPE_INT = 0; + uint8 private constant MAJOR_TYPE_NEGATIVE_INT = 1; + uint8 private constant MAJOR_TYPE_BYTES = 2; + uint8 private constant MAJOR_TYPE_STRING = 3; + uint8 private constant MAJOR_TYPE_ARRAY = 4; + uint8 private constant MAJOR_TYPE_MAP = 5; + uint8 private constant MAJOR_TYPE_CONTENT_FREE = 7; + + function encodeType(Buffer.buffer memory buf, uint8 major, uint value) private pure { + if(value <= 23) { + buf.append(uint8((major << 5) | value)); + } else if(value <= 0xFF) { + buf.append(uint8((major << 5) | 24)); + buf.appendInt(value, 1); + } else if(value <= 0xFFFF) { + buf.append(uint8((major << 5) | 25)); + buf.appendInt(value, 2); + } else if(value <= 0xFFFFFFFF) { + buf.append(uint8((major << 5) | 26)); + buf.appendInt(value, 4); + } else if(value <= 0xFFFFFFFFFFFFFFFF) { + buf.append(uint8((major << 5) | 27)); + buf.appendInt(value, 8); + } + } + + function encodeIndefiniteLengthType(Buffer.buffer memory buf, uint8 major) private pure { + buf.append(uint8((major << 5) | 31)); + } + + function encodeUInt(Buffer.buffer memory buf, uint value) internal pure { + encodeType(buf, MAJOR_TYPE_INT, value); + } + + function encodeInt(Buffer.buffer memory buf, int value) internal pure { + if(value >= 0) { + encodeType(buf, MAJOR_TYPE_INT, uint(value)); + } else { + encodeType(buf, MAJOR_TYPE_NEGATIVE_INT, uint(-1 - value)); + } + } + + function encodeBytes(Buffer.buffer memory buf, bytes value) internal pure { + encodeType(buf, MAJOR_TYPE_BYTES, value.length); + buf.append(value); + } + + function encodeString(Buffer.buffer memory buf, string value) internal pure { + encodeType(buf, MAJOR_TYPE_STRING, bytes(value).length); + buf.append(bytes(value)); + } + + function startArray(Buffer.buffer memory buf) internal pure { + encodeIndefiniteLengthType(buf, MAJOR_TYPE_ARRAY); + } + + function startMap(Buffer.buffer memory buf) internal pure { + encodeIndefiniteLengthType(buf, MAJOR_TYPE_MAP); + } + + function endSequence(Buffer.buffer memory buf) internal pure { + encodeIndefiniteLengthType(buf, MAJOR_TYPE_CONTENT_FREE); + } +} + +/* +End solidity-cborutils + */ + +contract usingProvable { + uint constant day = 60*60*24; + uint constant week = 60*60*24*7; + uint constant month = 60*60*24*30; + byte constant proofType_NONE = 0x00; + byte constant proofType_TLSNotary = 0x10; + byte constant proofType_Ledger = 0x30; + byte constant proofType_Android = 0x40; + byte constant proofType_Native = 0xF0; + byte constant proofStorage_IPFS = 0x01; + uint8 constant networkID_auto = 0; + uint8 constant networkID_mainnet = 1; + uint8 constant networkID_testnet = 2; + uint8 constant networkID_morden = 2; + uint8 constant networkID_consensys = 161; + + OracleAddrResolverI OAR; + + ProvableI provable; + modifier provableAPI { + if((address(OAR)==0)||(getCodeSize(address(OAR))==0)) + provable_setNetwork(networkID_auto); + + if(address(provable) != OAR.getAddress()) + provable = ProvableI(OAR.getAddress()); + + _; + } + modifier coupon(string code){ + provable = ProvableI(OAR.getAddress()); + _; + } + + function provable_setNetwork(uint8 networkID) internal returns(bool){ + return provable_setNetwork(); + networkID; // silence the warning and remain backwards compatible + } + function provable_setNetwork() internal returns(bool){ + if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet + OAR = OracleAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed); + provable_setNetworkName("eth_mainnet"); + return true; + } + if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1)>0){ //ropsten testnet + OAR = OracleAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1); + provable_setNetworkName("eth_ropsten3"); + return true; + } + if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e)>0){ //kovan testnet + OAR = OracleAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e); + provable_setNetworkName("eth_kovan"); + return true; + } + if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48)>0){ //rinkeby testnet + OAR = OracleAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48); + provable_setNetworkName("eth_rinkeby"); + return true; + } + if (getCodeSize(0xa2998EFD205FB9D4B4963aFb70778D6354ad3A41)>0){ //goerli testnet + OAR = OracleAddrResolverI(0xa2998EFD205FB9D4B4963aFb70778D6354ad3A41); + provable_setNetworkName("eth_goerli"); + return true; + } + if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475)>0){ //ethereum-bridge + OAR = OracleAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475); + return true; + } + if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF)>0){ //ether.camp ide + OAR = OracleAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF); + return true; + } + if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA)>0){ //browser-solidity + OAR = OracleAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA); + return true; + } + return false; + } + /** + * @dev The following `__callback` functions are just placeholders ideally + * meant to be defined in child contract when proofs are used. + * The function bodies simply silence compiler warnings. + */ + function __callback(bytes32 myid, string result) public { + __callback(myid, result, new bytes(0)); + } + + function __callback(bytes32 myid, string result, bytes proof) public { + return; + myid; result; proof; + provable_randomDS_args[bytes32(0)] = bytes32(0); + } + + function provable_getPrice(string datasource) provableAPI internal returns (uint){ + return provable.getPrice(datasource); + } + + function provable_getPrice(string datasource, uint gaslimit) provableAPI internal returns (uint){ + return provable.getPrice(datasource, gaslimit); + } + + function provable_query(string datasource, string arg) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource); + if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price + return provable.query.value(price)(0, datasource, arg); + } + function provable_query(uint timestamp, string datasource, string arg) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource); + if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price + return provable.query.value(price)(timestamp, datasource, arg); + } + function provable_query(uint timestamp, string datasource, string arg, uint gaslimit) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource, gaslimit); + if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price + return provable.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit); + } + function provable_query(string datasource, string arg, uint gaslimit) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource, gaslimit); + if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price + return provable.query_withGasLimit.value(price)(0, datasource, arg, gaslimit); + } + function provable_query(string datasource, string arg1, string arg2) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource); + if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price + return provable.query2.value(price)(0, datasource, arg1, arg2); + } + function provable_query(uint timestamp, string datasource, string arg1, string arg2) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource); + if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price + return provable.query2.value(price)(timestamp, datasource, arg1, arg2); + } + function provable_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource, gaslimit); + if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price + return provable.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit); + } + function provable_query(string datasource, string arg1, string arg2, uint gaslimit) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource, gaslimit); + if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price + return provable.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit); + } + function provable_query(string datasource, string[] argN) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource); + if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price + bytes memory args = stra2cbor(argN); + return provable.queryN.value(price)(0, datasource, args); + } + function provable_query(uint timestamp, string datasource, string[] argN) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource); + if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price + bytes memory args = stra2cbor(argN); + return provable.queryN.value(price)(timestamp, datasource, args); + } + function provable_query(uint timestamp, string datasource, string[] argN, uint gaslimit) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource, gaslimit); + if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price + bytes memory args = stra2cbor(argN); + return provable.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit); + } + function provable_query(string datasource, string[] argN, uint gaslimit) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource, gaslimit); + if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price + bytes memory args = stra2cbor(argN); + return provable.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit); + } + function provable_query(string datasource, string[1] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](1); + dynargs[0] = args[0]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[1] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](1); + dynargs[0] = args[0]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[1] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](1); + dynargs[0] = args[0]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, string[1] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](1); + dynargs[0] = args[0]; + return provable_query(datasource, dynargs, gaslimit); + } + + function provable_query(string datasource, string[2] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](2); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[2] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](2); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[2] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](2); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, string[2] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](2); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + return provable_query(datasource, dynargs, gaslimit); + } + function provable_query(string datasource, string[3] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](3); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[3] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](3); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[3] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](3); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, string[3] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](3); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + return provable_query(datasource, dynargs, gaslimit); + } + + function provable_query(string datasource, string[4] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](4); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[4] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](4); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[4] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](4); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, string[4] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](4); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + return provable_query(datasource, dynargs, gaslimit); + } + function provable_query(string datasource, string[5] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](5); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + dynargs[4] = args[4]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[5] args) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](5); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + dynargs[4] = args[4]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, string[5] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](5); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + dynargs[4] = args[4]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, string[5] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + string[] memory dynargs = new string[](5); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + dynargs[4] = args[4]; + return provable_query(datasource, dynargs, gaslimit); + } + function provable_query(string datasource, bytes[] argN) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource); + if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price + bytes memory args = ba2cbor(argN); + return provable.queryN.value(price)(0, datasource, args); + } + function provable_query(uint timestamp, string datasource, bytes[] argN) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource); + if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price + bytes memory args = ba2cbor(argN); + return provable.queryN.value(price)(timestamp, datasource, args); + } + function provable_query(uint timestamp, string datasource, bytes[] argN, uint gaslimit) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource, gaslimit); + if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price + bytes memory args = ba2cbor(argN); + return provable.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit); + } + function provable_query(string datasource, bytes[] argN, uint gaslimit) provableAPI internal returns (bytes32 id){ + uint price = provable.getPrice(datasource, gaslimit); + if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price + bytes memory args = ba2cbor(argN); + return provable.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit); + } + function provable_query(string datasource, bytes[1] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = args[0]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[1] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = args[0]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[1] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = args[0]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, bytes[1] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = args[0]; + return provable_query(datasource, dynargs, gaslimit); + } + + function provable_query(string datasource, bytes[2] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[2] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[2] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, bytes[2] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + return provable_query(datasource, dynargs, gaslimit); + } + function provable_query(string datasource, bytes[3] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[3] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[3] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, bytes[3] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + return provable_query(datasource, dynargs, gaslimit); + } + + function provable_query(string datasource, bytes[4] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[4] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[4] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, bytes[4] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + return provable_query(datasource, dynargs, gaslimit); + } + function provable_query(string datasource, bytes[5] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + dynargs[4] = args[4]; + return provable_query(datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[5] args) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + dynargs[4] = args[4]; + return provable_query(timestamp, datasource, dynargs); + } + function provable_query(uint timestamp, string datasource, bytes[5] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + dynargs[4] = args[4]; + return provable_query(timestamp, datasource, dynargs, gaslimit); + } + function provable_query(string datasource, bytes[5] args, uint gaslimit) provableAPI internal returns (bytes32 id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = args[0]; + dynargs[1] = args[1]; + dynargs[2] = args[2]; + dynargs[3] = args[3]; + dynargs[4] = args[4]; + return provable_query(datasource, dynargs, gaslimit); + } + + function provable_cbAddress() provableAPI internal returns (address){ + return provable.cbAddress(); + } + function provable_setProof(byte proofP) provableAPI internal { + return provable.setProofType(proofP); + } + function provable_setCustomGasPrice(uint gasPrice) provableAPI internal { + return provable.setCustomGasPrice(gasPrice); + } + + function provable_randomDS_getSessionPubKeyHash() provableAPI internal returns (bytes32){ + return provable.randomDS_getSessionPubKeyHash(); + } + + function getCodeSize(address _addr) view internal returns(uint _size) { + assembly { + _size := extcodesize(_addr) + } + } + + function parseAddr(string _a) internal pure returns (address){ + bytes memory tmp = bytes(_a); + uint160 iaddr = 0; + uint160 b1; + uint160 b2; + for (uint i=2; i<2+2*20; i+=2){ + iaddr *= 256; + b1 = uint160(tmp[i]); + b2 = uint160(tmp[i+1]); + if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87; + else if ((b1 >= 65)&&(b1 <= 70)) b1 -= 55; + else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48; + if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87; + else if ((b2 >= 65)&&(b2 <= 70)) b2 -= 55; + else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48; + iaddr += (b1*16+b2); + } + return address(iaddr); + } + + function strCompare(string _a, string _b) internal pure returns (int) { + bytes memory a = bytes(_a); + bytes memory b = bytes(_b); + uint minLength = a.length; + if (b.length < minLength) minLength = b.length; + for (uint i = 0; i < minLength; i ++) + if (a[i] < b[i]) + return -1; + else if (a[i] > b[i]) + return 1; + if (a.length < b.length) + return -1; + else if (a.length > b.length) + return 1; + else + return 0; + } + + function indexOf(string _haystack, string _needle) internal pure returns (int) { + bytes memory h = bytes(_haystack); + bytes memory n = bytes(_needle); + if(h.length < 1 || n.length < 1 || (n.length > h.length)) + return -1; + else if(h.length > (2**128 -1)) + return -1; + else + { + uint subindex = 0; + for (uint i = 0; i < h.length; i ++) + { + if (h[i] == n[0]) + { + subindex = 1; + while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex]) + { + subindex++; + } + if(subindex == n.length) + return int(i); + } + } + return -1; + } + } + + function strConcat(string _a, string _b, string _c, string _d, string _e) internal pure returns (string) { + bytes memory _ba = bytes(_a); + bytes memory _bb = bytes(_b); + bytes memory _bc = bytes(_c); + bytes memory _bd = bytes(_d); + bytes memory _be = bytes(_e); + string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); + bytes memory babcde = bytes(abcde); + uint k = 0; + for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i]; + for (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i]; + for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i]; + for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i]; + for (i = 0; i < _be.length; i++) babcde[k++] = _be[i]; + return string(babcde); + } + + function strConcat(string _a, string _b, string _c, string _d) internal pure returns (string) { + return strConcat(_a, _b, _c, _d, ""); + } + + function strConcat(string _a, string _b, string _c) internal pure returns (string) { + return strConcat(_a, _b, _c, "", ""); + } + + function strConcat(string _a, string _b) internal pure returns (string) { + return strConcat(_a, _b, "", "", ""); + } + + // parseInt + function parseInt(string _a) internal pure returns (uint) { + return parseInt(_a, 0); + } + + // parseInt(parseFloat*10^_b) + function parseInt(string _a, uint _b) internal pure returns (uint) { + bytes memory bresult = bytes(_a); + uint mint = 0; + bool decimals = false; + for (uint i=0; i= 48)&&(bresult[i] <= 57)){ + if (decimals){ + if (_b == 0) break; + else _b--; + } + mint *= 10; + mint += uint(bresult[i]) - 48; + } else if (bresult[i] == 46) decimals = true; + } + if (_b > 0) mint *= 10**_b; + return mint; + } + + function uint2str(uint i) internal pure returns (string){ + if (i == 0) return "0"; + uint j = i; + uint len; + while (j != 0){ + len++; + j /= 10; + } + bytes memory bstr = new bytes(len); + uint k = len - 1; + while (i != 0){ + bstr[k--] = byte(48 + i % 10); + i /= 10; + } + return string(bstr); + } + + using CBOR for Buffer.buffer; + function stra2cbor(string[] arr) internal pure returns (bytes) { + safeMemoryCleaner(); + Buffer.buffer memory buf; + Buffer.init(buf, 1024); + buf.startArray(); + for (uint i = 0; i < arr.length; i++) { + buf.encodeString(arr[i]); + } + buf.endSequence(); + return buf.buf; + } + + function ba2cbor(bytes[] arr) internal pure returns (bytes) { + safeMemoryCleaner(); + Buffer.buffer memory buf; + Buffer.init(buf, 1024); + buf.startArray(); + for (uint i = 0; i < arr.length; i++) { + buf.encodeBytes(arr[i]); + } + buf.endSequence(); + return buf.buf; + } + + string provable_network_name; + function provable_setNetworkName(string _network_name) internal { + provable_network_name = _network_name; + } + + function provable_getNetworkName() internal view returns (string) { + return provable_network_name; + } + + function provable_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32){ + require((_nbytes > 0) && (_nbytes <= 32)); + // Convert from seconds to ledger timer ticks + _delay *= 10; + bytes memory nbytes = new bytes(1); + nbytes[0] = byte(_nbytes); + bytes memory unonce = new bytes(32); + bytes memory sessionKeyHash = new bytes(32); + bytes32 sessionKeyHash_bytes32 = provable_randomDS_getSessionPubKeyHash(); + assembly { + mstore(unonce, 0x20) + // the following variables can be relaxed + // check relaxed random contract under ethereum-examples repo + // for an idea on how to override and replace comit hash vars + mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp))) + mstore(sessionKeyHash, 0x20) + mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32) + } + bytes memory delay = new bytes(32); + assembly { + mstore(add(delay, 0x20), _delay) + } + + bytes memory delay_bytes8 = new bytes(8); + copyBytes(delay, 24, 8, delay_bytes8, 0); + + bytes[4] memory args = [unonce, nbytes, sessionKeyHash, delay]; + bytes32 queryId = provable_query("random", args, _customGasLimit); + + bytes memory delay_bytes8_left = new bytes(8); + + assembly { + let x := mload(add(delay_bytes8, 0x20)) + mstore8(add(delay_bytes8_left, 0x27), div(x, 0x100000000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x26), div(x, 0x1000000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x25), div(x, 0x10000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x24), div(x, 0x100000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x23), div(x, 0x1000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x22), div(x, 0x10000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x21), div(x, 0x100000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x20), div(x, 0x1000000000000000000000000000000000000000000000000)) + + } + + provable_randomDS_setCommitment(queryId, keccak256(abi.encodePacked(delay_bytes8_left, args[1], sha256(args[0]), args[2]))); + return queryId; + } + + function provable_randomDS_setCommitment(bytes32 queryId, bytes32 commitment) internal { + provable_randomDS_args[queryId] = commitment; + } + + mapping(bytes32=>bytes32) provable_randomDS_args; + mapping(bytes32=>bool) provable_randomDS_sessionKeysHashVerified; + + function verifySig(bytes32 tosignh, bytes dersig, bytes pubkey) internal returns (bool){ + bool sigok; + address signer; + + bytes32 sigr; + bytes32 sigs; + + bytes memory sigr_ = new bytes(32); + uint offset = 4+(uint(dersig[3]) - 0x20); + sigr_ = copyBytes(dersig, offset, 32, sigr_, 0); + bytes memory sigs_ = new bytes(32); + offset += 32 + 2; + sigs_ = copyBytes(dersig, offset+(uint(dersig[offset-1]) - 0x20), 32, sigs_, 0); + + assembly { + sigr := mload(add(sigr_, 32)) + sigs := mload(add(sigs_, 32)) + } + + + (sigok, signer) = safer_ecrecover(tosignh, 27, sigr, sigs); + if (address(keccak256(pubkey)) == signer) return true; + else { + (sigok, signer) = safer_ecrecover(tosignh, 28, sigr, sigs); + return (address(keccak256(pubkey)) == signer); + } + } + + function provable_randomDS_proofVerify__sessionKeyValidity(bytes proof, uint sig2offset) internal returns (bool) { + bool sigok; + + // Step 6: verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH) + bytes memory sig2 = new bytes(uint(proof[sig2offset+1])+2); + copyBytes(proof, sig2offset, sig2.length, sig2, 0); + + bytes memory appkey1_pubkey = new bytes(64); + copyBytes(proof, 3+1, 64, appkey1_pubkey, 0); + + bytes memory tosign2 = new bytes(1+65+32); + tosign2[0] = byte(1); //role + copyBytes(proof, sig2offset-65, 65, tosign2, 1); + bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c"; + copyBytes(CODEHASH, 0, 32, tosign2, 1+65); + sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey); + + if (sigok == false) return false; + + + // Step 7: verify the APPKEY1 provenance (must be signed by Ledger) + bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4"; + + bytes memory tosign3 = new bytes(1+65); + tosign3[0] = 0xFE; + copyBytes(proof, 3, 65, tosign3, 1); + + bytes memory sig3 = new bytes(uint(proof[3+65+1])+2); + copyBytes(proof, 3+65, sig3.length, sig3, 0); + + sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY); + + return sigok; + } + + modifier provable_randomDS_proofVerify(bytes32 _queryId, string _result, bytes _proof) { + // Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1) + require((_proof[0] == "L") && (_proof[1] == "P") && (_proof[2] == 1)); + + bool proofVerified = provable_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), provable_getNetworkName()); + require(proofVerified); + + _; + } + + function provable_randomDS_proofVerify__returnCode(bytes32 _queryId, string _result, bytes _proof) internal returns (uint8){ + // Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1) + if ((_proof[0] != "L")||(_proof[1] != "P")||(_proof[2] != 1)) return 1; + + bool proofVerified = provable_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), provable_getNetworkName()); + if (proofVerified == false) return 2; + + return 0; + } + + function matchBytes32Prefix(bytes32 content, bytes prefix, uint n_random_bytes) internal pure returns (bool){ + bool match_ = true; + + require(prefix.length == n_random_bytes); + + for (uint256 i=0; i< n_random_bytes; i++) { + if (content[i] != prefix[i]) match_ = false; + } + + return match_; + } + + function provable_randomDS_proofVerify__main(bytes proof, bytes32 queryId, bytes result, string context_name) internal returns (bool){ + + // Step 2: the unique keyhash has to match with the sha256 of (context name + queryId) + uint ledgerProofLength = 3+65+(uint(proof[3+65+1])+2)+32; + bytes memory keyhash = new bytes(32); + copyBytes(proof, ledgerProofLength, 32, keyhash, 0); + if (!(keccak256(keyhash) == keccak256(abi.encodePacked(sha256(abi.encodePacked(context_name, queryId)))))) return false; + + bytes memory sig1 = new bytes(uint(proof[ledgerProofLength+(32+8+1+32)+1])+2); + copyBytes(proof, ledgerProofLength+(32+8+1+32), sig1.length, sig1, 0); + + // Step 3: we assume sig1 is valid (it will be verified during step 5) and we verify if 'result' is the prefix of sha256(sig1) + if (!matchBytes32Prefix(sha256(sig1), result, uint(proof[ledgerProofLength+32+8]))) return false; + + // Step 4: commitment match verification, keccak256(delay, nbytes, unonce, sessionKeyHash) == commitment in storage. + // This is to verify that the computed args match with the ones specified in the query. + bytes memory commitmentSlice1 = new bytes(8+1+32); + copyBytes(proof, ledgerProofLength+32, 8+1+32, commitmentSlice1, 0); + + bytes memory sessionPubkey = new bytes(64); + uint sig2offset = ledgerProofLength+32+(8+1+32)+sig1.length+65; + copyBytes(proof, sig2offset-64, 64, sessionPubkey, 0); + + bytes32 sessionPubkeyHash = sha256(sessionPubkey); + if (provable_randomDS_args[queryId] == keccak256(abi.encodePacked(commitmentSlice1, sessionPubkeyHash))){ //unonce, nbytes and sessionKeyHash match + delete provable_randomDS_args[queryId]; + } else return false; + + + // Step 5: validity verification for sig1 (keyhash and args signed with the sessionKey) + bytes memory tosign1 = new bytes(32+8+1+32); + copyBytes(proof, ledgerProofLength, 32+8+1+32, tosign1, 0); + if (!verifySig(sha256(tosign1), sig1, sessionPubkey)) return false; + + // verify if sessionPubkeyHash was verified already, if not.. let's do it! + if (provable_randomDS_sessionKeysHashVerified[sessionPubkeyHash] == false){ + provable_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = provable_randomDS_proofVerify__sessionKeyValidity(proof, sig2offset); + } + + return provable_randomDS_sessionKeysHashVerified[sessionPubkeyHash]; + } + + // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + function copyBytes(bytes from, uint fromOffset, uint length, bytes to, uint toOffset) internal pure returns (bytes) { + uint minLength = length + toOffset; + + // Buffer too small + require(to.length >= minLength); // Should be a better way? + + // NOTE: the offset 32 is added to skip the `size` field of both bytes variables + uint i = 32 + fromOffset; + uint j = 32 + toOffset; + + while (i < (32 + fromOffset + length)) { + assembly { + let tmp := mload(add(from, i)) + mstore(add(to, j), tmp) + } + i += 32; + j += 32; + } + + return to; + } + + // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + // Duplicate Solidity's ecrecover, but catching the CALL return value + function safer_ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal returns (bool, address) { + // We do our own memory management here. Solidity uses memory offset + // 0x40 to store the current end of memory. We write past it (as + // writes are memory extensions), but don't update the offset so + // Solidity will reuse it. The memory used here is only needed for + // this context. + + // FIXME: inline assembly can't access return values + bool ret; + address addr; + + assembly { + let size := mload(0x40) + mstore(size, hash) + mstore(add(size, 32), v) + mstore(add(size, 64), r) + mstore(add(size, 96), s) + + // NOTE: we can reuse the request memory because we deal with + // the return code + ret := call(3000, 1, 0, size, 128, size, 32) + addr := mload(size) + } + + return (ret, addr); + } + + // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + function ecrecovery(bytes32 hash, bytes sig) internal returns (bool, address) { + bytes32 r; + bytes32 s; + uint8 v; + + if (sig.length != 65) + return (false, 0); + + // The signature format is a compact form of: + // {bytes32 r}{bytes32 s}{uint8 v} + // Compact means, uint8 is not padded to 32 bytes. + assembly { + r := mload(add(sig, 32)) + s := mload(add(sig, 64)) + + // Here we are loading the last 32 bytes. We exploit the fact that + // 'mload' will pad with zeroes if we overread. + // There is no 'mload8' to do this, but that would be nicer. + v := byte(0, mload(add(sig, 96))) + + // Alternative solution: + // 'byte' is not working due to the Solidity parser, so lets + // use the second best option, 'and' + // v := and(mload(add(sig, 65)), 255) + } + + // albeit non-transactional signatures are not specified by the YP, one would expect it + // to match the YP range of [27, 28] + // + // geth uses [0, 1] and some clients have followed. This might change, see: + // https://github.com/ethereum/go-ethereum/issues/2053 + if (v < 27) + v += 27; + + if (v != 27 && v != 28) + return (false, 0); + + return safer_ecrecover(hash, v, r, s); + } + + function safeMemoryCleaner() internal pure { + assembly { + let fmem := mload(0x40) + codecopy(fmem, codesize, sub(msize, fmem)) + } + } + +} +// diff --git a/provableAPI_0.5.sol b/provableAPI_0.5.sol new file mode 100644 index 0000000..5dfc47e --- /dev/null +++ b/provableAPI_0.5.sol @@ -0,0 +1,1344 @@ +// +/* + + +Copyright (c) 2015-2016 Oraclize SRL +Copyright (c) 2016-2019 Oraclize LTD +Copyright (c) 2019 Provable Things Limited + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. + +*/ +pragma solidity >= 0.5.0 < 0.6.0; // Incompatible compiler version - please select a compiler within the stated pragma range, or use a different version of the provableAPI! + +// Dummy contract only used to emit to end-user they are using wrong solc +contract solcChecker { +/* INCOMPATIBLE SOLC: import the following instead: "github.com/oraclize/ethereum-api/oraclizeAPI_0.4.sol" */ function f(bytes calldata x) external; +} + +contract ProvableI { + + address public cbAddress; + + function setProofType(byte _proofType) external; + function setCustomGasPrice(uint _gasPrice) external; + function getPrice(string memory _datasource) public returns (uint _dsprice); + function randomDS_getSessionPubKeyHash() external view returns (bytes32 _sessionKeyHash); + function getPrice(string memory _datasource, uint _gasLimit) public returns (uint _dsprice); + function queryN(uint _timestamp, string memory _datasource, bytes memory _argN) public payable returns (bytes32 _id); + function query(uint _timestamp, string calldata _datasource, string calldata _arg) external payable returns (bytes32 _id); + function query2(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2) public payable returns (bytes32 _id); + function query_withGasLimit(uint _timestamp, string calldata _datasource, string calldata _arg, uint _gasLimit) external payable returns (bytes32 _id); + function queryN_withGasLimit(uint _timestamp, string calldata _datasource, bytes calldata _argN, uint _gasLimit) external payable returns (bytes32 _id); + function query2_withGasLimit(uint _timestamp, string calldata _datasource, string calldata _arg1, string calldata _arg2, uint _gasLimit) external payable returns (bytes32 _id); +} + +contract OracleAddrResolverI { + function getAddress() public returns (address _address); +} +/* + +Begin solidity-cborutils + +https://github.com/smartcontractkit/solidity-cborutils + +MIT License + +Copyright (c) 2018 SmartContract ChainLink, Ltd. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +*/ +library Buffer { + + struct buffer { + bytes buf; + uint capacity; + } + + function init(buffer memory _buf, uint _capacity) internal pure { + uint capacity = _capacity; + if (capacity % 32 != 0) { + capacity += 32 - (capacity % 32); + } + _buf.capacity = capacity; // Allocate space for the buffer data + assembly { + let ptr := mload(0x40) + mstore(_buf, ptr) + mstore(ptr, 0) + mstore(0x40, add(ptr, capacity)) + } + } + + function resize(buffer memory _buf, uint _capacity) private pure { + bytes memory oldbuf = _buf.buf; + init(_buf, _capacity); + append(_buf, oldbuf); + } + + function max(uint _a, uint _b) private pure returns (uint _max) { + if (_a > _b) { + return _a; + } + return _b; + } + /** + * @dev Appends a byte array to the end of the buffer. Resizes if doing so + * would exceed the capacity of the buffer. + * @param _buf The buffer to append to. + * @param _data The data to append. + * @return The original buffer. + * + */ + function append(buffer memory _buf, bytes memory _data) internal pure returns (buffer memory _buffer) { + if (_data.length + _buf.buf.length > _buf.capacity) { + resize(_buf, max(_buf.capacity, _data.length) * 2); + } + uint dest; + uint src; + uint len = _data.length; + assembly { + let bufptr := mload(_buf) // Memory address of the buffer data + let buflen := mload(bufptr) // Length of existing buffer data + dest := add(add(bufptr, buflen), 32) // Start address = buffer address + buffer length + sizeof(buffer length) + mstore(bufptr, add(buflen, mload(_data))) // Update buffer length + src := add(_data, 32) + } + for(; len >= 32; len -= 32) { // Copy word-length chunks while possible + assembly { + mstore(dest, mload(src)) + } + dest += 32; + src += 32; + } + uint mask = 256 ** (32 - len) - 1; // Copy remaining bytes + assembly { + let srcpart := and(mload(src), not(mask)) + let destpart := and(mload(dest), mask) + mstore(dest, or(destpart, srcpart)) + } + return _buf; + } + /** + * + * @dev Appends a byte to the end of the buffer. Resizes if doing so would + * exceed the capacity of the buffer. + * @param _buf The buffer to append to. + * @param _data The data to append. + * @return The original buffer. + * + */ + function append(buffer memory _buf, uint8 _data) internal pure { + if (_buf.buf.length + 1 > _buf.capacity) { + resize(_buf, _buf.capacity * 2); + } + assembly { + let bufptr := mload(_buf) // Memory address of the buffer data + let buflen := mload(bufptr) // Length of existing buffer data + let dest := add(add(bufptr, buflen), 32) // Address = buffer address + buffer length + sizeof(buffer length) + mstore8(dest, _data) + mstore(bufptr, add(buflen, 1)) // Update buffer length + } + } + /** + * + * @dev Appends a byte to the end of the buffer. Resizes if doing so would + * exceed the capacity of the buffer. + * @param _buf The buffer to append to. + * @param _data The data to append. + * @return The original buffer. + * + */ + function appendInt(buffer memory _buf, uint _data, uint _len) internal pure returns (buffer memory _buffer) { + if (_len + _buf.buf.length > _buf.capacity) { + resize(_buf, max(_buf.capacity, _len) * 2); + } + uint mask = 256 ** _len - 1; + assembly { + let bufptr := mload(_buf) // Memory address of the buffer data + let buflen := mload(bufptr) // Length of existing buffer data + let dest := add(add(bufptr, buflen), _len) // Address = buffer address + buffer length + sizeof(buffer length) + len + mstore(dest, or(and(mload(dest), not(mask)), _data)) + mstore(bufptr, add(buflen, _len)) // Update buffer length + } + return _buf; + } +} + +library CBOR { + + using Buffer for Buffer.buffer; + + uint8 private constant MAJOR_TYPE_INT = 0; + uint8 private constant MAJOR_TYPE_MAP = 5; + uint8 private constant MAJOR_TYPE_BYTES = 2; + uint8 private constant MAJOR_TYPE_ARRAY = 4; + uint8 private constant MAJOR_TYPE_STRING = 3; + uint8 private constant MAJOR_TYPE_NEGATIVE_INT = 1; + uint8 private constant MAJOR_TYPE_CONTENT_FREE = 7; + + function encodeType(Buffer.buffer memory _buf, uint8 _major, uint _value) private pure { + if (_value <= 23) { + _buf.append(uint8((_major << 5) | _value)); + } else if (_value <= 0xFF) { + _buf.append(uint8((_major << 5) | 24)); + _buf.appendInt(_value, 1); + } else if (_value <= 0xFFFF) { + _buf.append(uint8((_major << 5) | 25)); + _buf.appendInt(_value, 2); + } else if (_value <= 0xFFFFFFFF) { + _buf.append(uint8((_major << 5) | 26)); + _buf.appendInt(_value, 4); + } else if (_value <= 0xFFFFFFFFFFFFFFFF) { + _buf.append(uint8((_major << 5) | 27)); + _buf.appendInt(_value, 8); + } + } + + function encodeIndefiniteLengthType(Buffer.buffer memory _buf, uint8 _major) private pure { + _buf.append(uint8((_major << 5) | 31)); + } + + function encodeUInt(Buffer.buffer memory _buf, uint _value) internal pure { + encodeType(_buf, MAJOR_TYPE_INT, _value); + } + + function encodeInt(Buffer.buffer memory _buf, int _value) internal pure { + if (_value >= 0) { + encodeType(_buf, MAJOR_TYPE_INT, uint(_value)); + } else { + encodeType(_buf, MAJOR_TYPE_NEGATIVE_INT, uint(-1 - _value)); + } + } + + function encodeBytes(Buffer.buffer memory _buf, bytes memory _value) internal pure { + encodeType(_buf, MAJOR_TYPE_BYTES, _value.length); + _buf.append(_value); + } + + function encodeString(Buffer.buffer memory _buf, string memory _value) internal pure { + encodeType(_buf, MAJOR_TYPE_STRING, bytes(_value).length); + _buf.append(bytes(_value)); + } + + function startArray(Buffer.buffer memory _buf) internal pure { + encodeIndefiniteLengthType(_buf, MAJOR_TYPE_ARRAY); + } + + function startMap(Buffer.buffer memory _buf) internal pure { + encodeIndefiniteLengthType(_buf, MAJOR_TYPE_MAP); + } + + function endSequence(Buffer.buffer memory _buf) internal pure { + encodeIndefiniteLengthType(_buf, MAJOR_TYPE_CONTENT_FREE); + } +} +/* + +End solidity-cborutils + +*/ +contract usingProvable { + + using CBOR for Buffer.buffer; + + ProvableI provable; + OracleAddrResolverI OAR; + + uint constant day = 60 * 60 * 24; + uint constant week = 60 * 60 * 24 * 7; + uint constant month = 60 * 60 * 24 * 30; + + byte constant proofType_NONE = 0x00; + byte constant proofType_Ledger = 0x30; + byte constant proofType_Native = 0xF0; + byte constant proofStorage_IPFS = 0x01; + byte constant proofType_Android = 0x40; + byte constant proofType_TLSNotary = 0x10; + + string provable_network_name; + uint8 constant networkID_auto = 0; + uint8 constant networkID_morden = 2; + uint8 constant networkID_mainnet = 1; + uint8 constant networkID_testnet = 2; + uint8 constant networkID_consensys = 161; + + mapping(bytes32 => bytes32) provable_randomDS_args; + mapping(bytes32 => bool) provable_randomDS_sessionKeysHashVerified; + + modifier provableAPI { + if ((address(OAR) == address(0)) || (getCodeSize(address(OAR)) == 0)) { + provable_setNetwork(networkID_auto); + } + if (address(provable) != OAR.getAddress()) { + provable = ProvableI(OAR.getAddress()); + } + _; + } + + modifier provable_randomDS_proofVerify(bytes32 _queryId, string memory _result, bytes memory _proof) { + // RandomDS Proof Step 1: The prefix has to match 'LP\x01' (Ledger Proof version 1) + require((_proof[0] == "L") && (_proof[1] == "P") && (uint8(_proof[2]) == uint8(1))); + bool proofVerified = provable_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), provable_getNetworkName()); + require(proofVerified); + _; + } + + function provable_setNetwork(uint8 _networkID) internal returns (bool _networkSet) { + _networkID; // NOTE: Silence the warning and remain backwards compatible + return provable_setNetwork(); + } + + function provable_setNetworkName(string memory _network_name) internal { + provable_network_name = _network_name; + } + + function provable_getNetworkName() internal view returns (string memory _networkName) { + return provable_network_name; + } + + function provable_setNetwork() internal returns (bool _networkSet) { + if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed) > 0) { //mainnet + OAR = OracleAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed); + provable_setNetworkName("eth_mainnet"); + return true; + } + if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1) > 0) { //ropsten testnet + OAR = OracleAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1); + provable_setNetworkName("eth_ropsten3"); + return true; + } + if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e) > 0) { //kovan testnet + OAR = OracleAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e); + provable_setNetworkName("eth_kovan"); + return true; + } + if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48) > 0) { //rinkeby testnet + OAR = OracleAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48); + provable_setNetworkName("eth_rinkeby"); + return true; + } + if (getCodeSize(0xa2998EFD205FB9D4B4963aFb70778D6354ad3A41) > 0) { //goerli testnet + OAR = OracleAddrResolverI(0xa2998EFD205FB9D4B4963aFb70778D6354ad3A41); + provable_setNetworkName("eth_goerli"); + return true; + } + if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475) > 0) { //ethereum-bridge + OAR = OracleAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475); + return true; + } + if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF) > 0) { //ether.camp ide + OAR = OracleAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF); + return true; + } + if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA) > 0) { //browser-solidity + OAR = OracleAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA); + return true; + } + return false; + } + /** + * @dev The following `__callback` functions are just placeholders ideally + * meant to be defined in child contract when proofs are used. + * The function bodies simply silence compiler warnings. + */ + function __callback(bytes32 _myid, string memory _result) public { + __callback(_myid, _result, new bytes(0)); + } + + function __callback(bytes32 _myid, string memory _result, bytes memory _proof) public { + _myid; _result; _proof; + provable_randomDS_args[bytes32(0)] = bytes32(0); + } + + function provable_getPrice(string memory _datasource) provableAPI internal returns (uint _queryPrice) { + return provable.getPrice(_datasource); + } + + function provable_getPrice(string memory _datasource, uint _gasLimit) provableAPI internal returns (uint _queryPrice) { + return provable.getPrice(_datasource, _gasLimit); + } + + function provable_query(string memory _datasource, string memory _arg) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + return provable.query.value(price)(0, _datasource, _arg); + } + + function provable_query(uint _timestamp, string memory _datasource, string memory _arg) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + return provable.query.value(price)(_timestamp, _datasource, _arg); + } + + function provable_query(uint _timestamp, string memory _datasource, string memory _arg, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource,_gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + return provable.query_withGasLimit.value(price)(_timestamp, _datasource, _arg, _gasLimit); + } + + function provable_query(string memory _datasource, string memory _arg, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + return provable.query_withGasLimit.value(price)(0, _datasource, _arg, _gasLimit); + } + + function provable_query(string memory _datasource, string memory _arg1, string memory _arg2) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + return provable.query2.value(price)(0, _datasource, _arg1, _arg2); + } + + function provable_query(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + return provable.query2.value(price)(_timestamp, _datasource, _arg1, _arg2); + } + + function provable_query(uint _timestamp, string memory _datasource, string memory _arg1, string memory _arg2, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + return provable.query2_withGasLimit.value(price)(_timestamp, _datasource, _arg1, _arg2, _gasLimit); + } + + function provable_query(string memory _datasource, string memory _arg1, string memory _arg2, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + return provable.query2_withGasLimit.value(price)(0, _datasource, _arg1, _arg2, _gasLimit); + } + + function provable_query(string memory _datasource, string[] memory _argN) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + bytes memory args = stra2cbor(_argN); + return provable.queryN.value(price)(0, _datasource, args); + } + + function provable_query(uint _timestamp, string memory _datasource, string[] memory _argN) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + bytes memory args = stra2cbor(_argN); + return provable.queryN.value(price)(_timestamp, _datasource, args); + } + + function provable_query(uint _timestamp, string memory _datasource, string[] memory _argN, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + bytes memory args = stra2cbor(_argN); + return provable.queryN_withGasLimit.value(price)(_timestamp, _datasource, args, _gasLimit); + } + + function provable_query(string memory _datasource, string[] memory _argN, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + bytes memory args = stra2cbor(_argN); + return provable.queryN_withGasLimit.value(price)(0, _datasource, args, _gasLimit); + } + + function provable_query(string memory _datasource, string[1] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](1); + dynargs[0] = _args[0]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[1] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](1); + dynargs[0] = _args[0]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[1] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](1); + dynargs[0] = _args[0]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[1] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](1); + dynargs[0] = _args[0]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[2] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[2] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[2] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[2] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[3] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[3] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[3] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[3] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[4] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[4] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[4] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[4] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[5] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[5] memory _args) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, string[5] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, string[5] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + string[] memory dynargs = new string[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[] memory _argN) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + bytes memory args = ba2cbor(_argN); + return provable.queryN.value(price)(0, _datasource, args); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[] memory _argN) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource); + if (price > 1 ether + tx.gasprice * 200000) { + return 0; // Unexpectedly high price + } + bytes memory args = ba2cbor(_argN); + return provable.queryN.value(price)(_timestamp, _datasource, args); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[] memory _argN, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + bytes memory args = ba2cbor(_argN); + return provable.queryN_withGasLimit.value(price)(_timestamp, _datasource, args, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[] memory _argN, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + uint price = provable.getPrice(_datasource, _gasLimit); + if (price > 1 ether + tx.gasprice * _gasLimit) { + return 0; // Unexpectedly high price + } + bytes memory args = ba2cbor(_argN); + return provable.queryN_withGasLimit.value(price)(0, _datasource, args, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[1] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = _args[0]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[1] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = _args[0]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[1] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = _args[0]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[1] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](1); + dynargs[0] = _args[0]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[2] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[2] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[2] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[2] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](2); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[3] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[3] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[3] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[3] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](3); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[4] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[4] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[4] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[4] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](4); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[5] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return provable_query(_datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[5] memory _args) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return provable_query(_timestamp, _datasource, dynargs); + } + + function provable_query(uint _timestamp, string memory _datasource, bytes[5] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return provable_query(_timestamp, _datasource, dynargs, _gasLimit); + } + + function provable_query(string memory _datasource, bytes[5] memory _args, uint _gasLimit) provableAPI internal returns (bytes32 _id) { + bytes[] memory dynargs = new bytes[](5); + dynargs[0] = _args[0]; + dynargs[1] = _args[1]; + dynargs[2] = _args[2]; + dynargs[3] = _args[3]; + dynargs[4] = _args[4]; + return provable_query(_datasource, dynargs, _gasLimit); + } + + function provable_setProof(byte _proofP) provableAPI internal { + return provable.setProofType(_proofP); + } + + + function provable_cbAddress() provableAPI internal returns (address _callbackAddress) { + return provable.cbAddress(); + } + + function getCodeSize(address _addr) view internal returns (uint _size) { + assembly { + _size := extcodesize(_addr) + } + } + + function provable_setCustomGasPrice(uint _gasPrice) provableAPI internal { + return provable.setCustomGasPrice(_gasPrice); + } + + function provable_randomDS_getSessionPubKeyHash() provableAPI internal returns (bytes32 _sessionKeyHash) { + return provable.randomDS_getSessionPubKeyHash(); + } + + function parseAddr(string memory _a) internal pure returns (address _parsedAddress) { + bytes memory tmp = bytes(_a); + uint160 iaddr = 0; + uint160 b1; + uint160 b2; + for (uint i = 2; i < 2 + 2 * 20; i += 2) { + iaddr *= 256; + b1 = uint160(uint8(tmp[i])); + b2 = uint160(uint8(tmp[i + 1])); + if ((b1 >= 97) && (b1 <= 102)) { + b1 -= 87; + } else if ((b1 >= 65) && (b1 <= 70)) { + b1 -= 55; + } else if ((b1 >= 48) && (b1 <= 57)) { + b1 -= 48; + } + if ((b2 >= 97) && (b2 <= 102)) { + b2 -= 87; + } else if ((b2 >= 65) && (b2 <= 70)) { + b2 -= 55; + } else if ((b2 >= 48) && (b2 <= 57)) { + b2 -= 48; + } + iaddr += (b1 * 16 + b2); + } + return address(iaddr); + } + + function strCompare(string memory _a, string memory _b) internal pure returns (int _returnCode) { + bytes memory a = bytes(_a); + bytes memory b = bytes(_b); + uint minLength = a.length; + if (b.length < minLength) { + minLength = b.length; + } + for (uint i = 0; i < minLength; i ++) { + if (a[i] < b[i]) { + return -1; + } else if (a[i] > b[i]) { + return 1; + } + } + if (a.length < b.length) { + return -1; + } else if (a.length > b.length) { + return 1; + } else { + return 0; + } + } + + function indexOf(string memory _haystack, string memory _needle) internal pure returns (int _returnCode) { + bytes memory h = bytes(_haystack); + bytes memory n = bytes(_needle); + if (h.length < 1 || n.length < 1 || (n.length > h.length)) { + return -1; + } else if (h.length > (2 ** 128 - 1)) { + return -1; + } else { + uint subindex = 0; + for (uint i = 0; i < h.length; i++) { + if (h[i] == n[0]) { + subindex = 1; + while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex]) { + subindex++; + } + if (subindex == n.length) { + return int(i); + } + } + } + return -1; + } + } + + function strConcat(string memory _a, string memory _b) internal pure returns (string memory _concatenatedString) { + return strConcat(_a, _b, "", "", ""); + } + + function strConcat(string memory _a, string memory _b, string memory _c) internal pure returns (string memory _concatenatedString) { + return strConcat(_a, _b, _c, "", ""); + } + + function strConcat(string memory _a, string memory _b, string memory _c, string memory _d) internal pure returns (string memory _concatenatedString) { + return strConcat(_a, _b, _c, _d, ""); + } + + function strConcat(string memory _a, string memory _b, string memory _c, string memory _d, string memory _e) internal pure returns (string memory _concatenatedString) { + bytes memory _ba = bytes(_a); + bytes memory _bb = bytes(_b); + bytes memory _bc = bytes(_c); + bytes memory _bd = bytes(_d); + bytes memory _be = bytes(_e); + string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); + bytes memory babcde = bytes(abcde); + uint k = 0; + uint i = 0; + for (i = 0; i < _ba.length; i++) { + babcde[k++] = _ba[i]; + } + for (i = 0; i < _bb.length; i++) { + babcde[k++] = _bb[i]; + } + for (i = 0; i < _bc.length; i++) { + babcde[k++] = _bc[i]; + } + for (i = 0; i < _bd.length; i++) { + babcde[k++] = _bd[i]; + } + for (i = 0; i < _be.length; i++) { + babcde[k++] = _be[i]; + } + return string(babcde); + } + + function safeParseInt(string memory _a) internal pure returns (uint _parsedInt) { + return safeParseInt(_a, 0); + } + + function safeParseInt(string memory _a, uint _b) internal pure returns (uint _parsedInt) { + bytes memory bresult = bytes(_a); + uint mint = 0; + bool decimals = false; + for (uint i = 0; i < bresult.length; i++) { + if ((uint(uint8(bresult[i])) >= 48) && (uint(uint8(bresult[i])) <= 57)) { + if (decimals) { + if (_b == 0) break; + else _b--; + } + mint *= 10; + mint += uint(uint8(bresult[i])) - 48; + } else if (uint(uint8(bresult[i])) == 46) { + require(!decimals, 'More than one decimal encountered in string!'); + decimals = true; + } else { + revert("Non-numeral character encountered in string!"); + } + } + if (_b > 0) { + mint *= 10 ** _b; + } + return mint; + } + + function parseInt(string memory _a) internal pure returns (uint _parsedInt) { + return parseInt(_a, 0); + } + + function parseInt(string memory _a, uint _b) internal pure returns (uint _parsedInt) { + bytes memory bresult = bytes(_a); + uint mint = 0; + bool decimals = false; + for (uint i = 0; i < bresult.length; i++) { + if ((uint(uint8(bresult[i])) >= 48) && (uint(uint8(bresult[i])) <= 57)) { + if (decimals) { + if (_b == 0) { + break; + } else { + _b--; + } + } + mint *= 10; + mint += uint(uint8(bresult[i])) - 48; + } else if (uint(uint8(bresult[i])) == 46) { + decimals = true; + } + } + if (_b > 0) { + mint *= 10 ** _b; + } + return mint; + } + + function uint2str(uint _i) internal pure returns (string memory _uintAsString) { + if (_i == 0) { + return "0"; + } + uint j = _i; + uint len; + while (j != 0) { + len++; + j /= 10; + } + bytes memory bstr = new bytes(len); + uint k = len - 1; + while (_i != 0) { + bstr[k--] = byte(uint8(48 + _i % 10)); + _i /= 10; + } + return string(bstr); + } + + function stra2cbor(string[] memory _arr) internal pure returns (bytes memory _cborEncoding) { + safeMemoryCleaner(); + Buffer.buffer memory buf; + Buffer.init(buf, 1024); + buf.startArray(); + for (uint i = 0; i < _arr.length; i++) { + buf.encodeString(_arr[i]); + } + buf.endSequence(); + return buf.buf; + } + + function ba2cbor(bytes[] memory _arr) internal pure returns (bytes memory _cborEncoding) { + safeMemoryCleaner(); + Buffer.buffer memory buf; + Buffer.init(buf, 1024); + buf.startArray(); + for (uint i = 0; i < _arr.length; i++) { + buf.encodeBytes(_arr[i]); + } + buf.endSequence(); + return buf.buf; + } + + function provable_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32 _queryId) { + require((_nbytes > 0) && (_nbytes <= 32)); + _delay *= 10; // Convert from seconds to ledger timer ticks + bytes memory nbytes = new bytes(1); + nbytes[0] = byte(uint8(_nbytes)); + bytes memory unonce = new bytes(32); + bytes memory sessionKeyHash = new bytes(32); + bytes32 sessionKeyHash_bytes32 = provable_randomDS_getSessionPubKeyHash(); + assembly { + mstore(unonce, 0x20) + /* + The following variables can be relaxed. + Check the relaxed random contract at https://github.com/oraclize/ethereum-examples + for an idea on how to override and replace commit hash variables. + */ + mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp))) + mstore(sessionKeyHash, 0x20) + mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32) + } + bytes memory delay = new bytes(32); + assembly { + mstore(add(delay, 0x20), _delay) + } + bytes memory delay_bytes8 = new bytes(8); + copyBytes(delay, 24, 8, delay_bytes8, 0); + bytes[4] memory args = [unonce, nbytes, sessionKeyHash, delay]; + bytes32 queryId = provable_query("random", args, _customGasLimit); + bytes memory delay_bytes8_left = new bytes(8); + assembly { + let x := mload(add(delay_bytes8, 0x20)) + mstore8(add(delay_bytes8_left, 0x27), div(x, 0x100000000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x26), div(x, 0x1000000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x25), div(x, 0x10000000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x24), div(x, 0x100000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x23), div(x, 0x1000000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x22), div(x, 0x10000000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x21), div(x, 0x100000000000000000000000000000000000000000000000000)) + mstore8(add(delay_bytes8_left, 0x20), div(x, 0x1000000000000000000000000000000000000000000000000)) + } + provable_randomDS_setCommitment(queryId, keccak256(abi.encodePacked(delay_bytes8_left, args[1], sha256(args[0]), args[2]))); + return queryId; + } + + function provable_randomDS_setCommitment(bytes32 _queryId, bytes32 _commitment) internal { + provable_randomDS_args[_queryId] = _commitment; + } + + function verifySig(bytes32 _tosignh, bytes memory _dersig, bytes memory _pubkey) internal returns (bool _sigVerified) { + bool sigok; + address signer; + bytes32 sigr; + bytes32 sigs; + bytes memory sigr_ = new bytes(32); + uint offset = 4 + (uint(uint8(_dersig[3])) - 0x20); + sigr_ = copyBytes(_dersig, offset, 32, sigr_, 0); + bytes memory sigs_ = new bytes(32); + offset += 32 + 2; + sigs_ = copyBytes(_dersig, offset + (uint(uint8(_dersig[offset - 1])) - 0x20), 32, sigs_, 0); + assembly { + sigr := mload(add(sigr_, 32)) + sigs := mload(add(sigs_, 32)) + } + (sigok, signer) = safer_ecrecover(_tosignh, 27, sigr, sigs); + if (address(uint160(uint256(keccak256(_pubkey)))) == signer) { + return true; + } else { + (sigok, signer) = safer_ecrecover(_tosignh, 28, sigr, sigs); + return (address(uint160(uint256(keccak256(_pubkey)))) == signer); + } + } + + function provable_randomDS_proofVerify__sessionKeyValidity(bytes memory _proof, uint _sig2offset) internal returns (bool _proofVerified) { + bool sigok; + // Random DS Proof Step 6: Verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH) + bytes memory sig2 = new bytes(uint(uint8(_proof[_sig2offset + 1])) + 2); + copyBytes(_proof, _sig2offset, sig2.length, sig2, 0); + bytes memory appkey1_pubkey = new bytes(64); + copyBytes(_proof, 3 + 1, 64, appkey1_pubkey, 0); + bytes memory tosign2 = new bytes(1 + 65 + 32); + tosign2[0] = byte(uint8(1)); //role + copyBytes(_proof, _sig2offset - 65, 65, tosign2, 1); + bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c"; + copyBytes(CODEHASH, 0, 32, tosign2, 1 + 65); + sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey); + if (!sigok) { + return false; + } + // Random DS Proof Step 7: Verify the APPKEY1 provenance (must be signed by Ledger) + bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4"; + bytes memory tosign3 = new bytes(1 + 65); + tosign3[0] = 0xFE; + copyBytes(_proof, 3, 65, tosign3, 1); + bytes memory sig3 = new bytes(uint(uint8(_proof[3 + 65 + 1])) + 2); + copyBytes(_proof, 3 + 65, sig3.length, sig3, 0); + sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY); + return sigok; + } + + function provable_randomDS_proofVerify__returnCode(bytes32 _queryId, string memory _result, bytes memory _proof) internal returns (uint8 _returnCode) { + // Random DS Proof Step 1: The prefix has to match 'LP\x01' (Ledger Proof version 1) + if ((_proof[0] != "L") || (_proof[1] != "P") || (uint8(_proof[2]) != uint8(1))) { + return 1; + } + bool proofVerified = provable_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), provable_getNetworkName()); + if (!proofVerified) { + return 2; + } + return 0; + } + + function matchBytes32Prefix(bytes32 _content, bytes memory _prefix, uint _nRandomBytes) internal pure returns (bool _matchesPrefix) { + bool match_ = true; + require(_prefix.length == _nRandomBytes); + for (uint256 i = 0; i< _nRandomBytes; i++) { + if (_content[i] != _prefix[i]) { + match_ = false; + } + } + return match_; + } + + function provable_randomDS_proofVerify__main(bytes memory _proof, bytes32 _queryId, bytes memory _result, string memory _contextName) internal returns (bool _proofVerified) { + // Random DS Proof Step 2: The unique keyhash has to match with the sha256 of (context name + _queryId) + uint ledgerProofLength = 3 + 65 + (uint(uint8(_proof[3 + 65 + 1])) + 2) + 32; + bytes memory keyhash = new bytes(32); + copyBytes(_proof, ledgerProofLength, 32, keyhash, 0); + if (!(keccak256(keyhash) == keccak256(abi.encodePacked(sha256(abi.encodePacked(_contextName, _queryId)))))) { + return false; + } + bytes memory sig1 = new bytes(uint(uint8(_proof[ledgerProofLength + (32 + 8 + 1 + 32) + 1])) + 2); + copyBytes(_proof, ledgerProofLength + (32 + 8 + 1 + 32), sig1.length, sig1, 0); + // Random DS Proof Step 3: We assume sig1 is valid (it will be verified during step 5) and we verify if '_result' is the _prefix of sha256(sig1) + if (!matchBytes32Prefix(sha256(sig1), _result, uint(uint8(_proof[ledgerProofLength + 32 + 8])))) { + return false; + } + // Random DS Proof Step 4: Commitment match verification, keccak256(delay, nbytes, unonce, sessionKeyHash) == commitment in storage. + // This is to verify that the computed args match with the ones specified in the query. + bytes memory commitmentSlice1 = new bytes(8 + 1 + 32); + copyBytes(_proof, ledgerProofLength + 32, 8 + 1 + 32, commitmentSlice1, 0); + bytes memory sessionPubkey = new bytes(64); + uint sig2offset = ledgerProofLength + 32 + (8 + 1 + 32) + sig1.length + 65; + copyBytes(_proof, sig2offset - 64, 64, sessionPubkey, 0); + bytes32 sessionPubkeyHash = sha256(sessionPubkey); + if (provable_randomDS_args[_queryId] == keccak256(abi.encodePacked(commitmentSlice1, sessionPubkeyHash))) { //unonce, nbytes and sessionKeyHash match + delete provable_randomDS_args[_queryId]; + } else return false; + // Random DS Proof Step 5: Validity verification for sig1 (keyhash and args signed with the sessionKey) + bytes memory tosign1 = new bytes(32 + 8 + 1 + 32); + copyBytes(_proof, ledgerProofLength, 32 + 8 + 1 + 32, tosign1, 0); + if (!verifySig(sha256(tosign1), sig1, sessionPubkey)) { + return false; + } + // Verify if sessionPubkeyHash was verified already, if not.. let's do it! + if (!provable_randomDS_sessionKeysHashVerified[sessionPubkeyHash]) { + provable_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = provable_randomDS_proofVerify__sessionKeyValidity(_proof, sig2offset); + } + return provable_randomDS_sessionKeysHashVerified[sessionPubkeyHash]; + } + /* + The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + */ + function copyBytes(bytes memory _from, uint _fromOffset, uint _length, bytes memory _to, uint _toOffset) internal pure returns (bytes memory _copiedBytes) { + uint minLength = _length + _toOffset; + require(_to.length >= minLength); // Buffer too small. Should be a better way? + uint i = 32 + _fromOffset; // NOTE: the offset 32 is added to skip the `size` field of both bytes variables + uint j = 32 + _toOffset; + while (i < (32 + _fromOffset + _length)) { + assembly { + let tmp := mload(add(_from, i)) + mstore(add(_to, j), tmp) + } + i += 32; + j += 32; + } + return _to; + } + /* + The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + Duplicate Solidity's ecrecover, but catching the CALL return value + */ + function safer_ecrecover(bytes32 _hash, uint8 _v, bytes32 _r, bytes32 _s) internal returns (bool _success, address _recoveredAddress) { + /* + We do our own memory management here. Solidity uses memory offset + 0x40 to store the current end of memory. We write past it (as + writes are memory extensions), but don't update the offset so + Solidity will reuse it. The memory used here is only needed for + this context. + FIXME: inline assembly can't access return values + */ + bool ret; + address addr; + assembly { + let size := mload(0x40) + mstore(size, _hash) + mstore(add(size, 32), _v) + mstore(add(size, 64), _r) + mstore(add(size, 96), _s) + ret := call(3000, 1, 0, size, 128, size, 32) // NOTE: we can reuse the request memory because we deal with the return code. + addr := mload(size) + } + return (ret, addr); + } + /* + The following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license + */ + function ecrecovery(bytes32 _hash, bytes memory _sig) internal returns (bool _success, address _recoveredAddress) { + bytes32 r; + bytes32 s; + uint8 v; + if (_sig.length != 65) { + return (false, address(0)); + } + /* + The signature format is a compact form of: + {bytes32 r}{bytes32 s}{uint8 v} + Compact means, uint8 is not padded to 32 bytes. + */ + assembly { + r := mload(add(_sig, 32)) + s := mload(add(_sig, 64)) + /* + Here we are loading the last 32 bytes. We exploit the fact that + 'mload' will pad with zeroes if we overread. + There is no 'mload8' to do this, but that would be nicer. + */ + v := byte(0, mload(add(_sig, 96))) + /* + Alternative solution: + 'byte' is not working due to the Solidity parser, so lets + use the second best option, 'and' + v := and(mload(add(_sig, 65)), 255) + */ + } + /* + albeit non-transactional signatures are not specified by the YP, one would expect it + to match the YP range of [27, 28] + geth uses [0, 1] and some clients have followed. This might change, see: + https://github.com/ethereum/go-ethereum/issues/2053 + */ + if (v < 27) { + v += 27; + } + if (v != 27 && v != 28) { + return (false, address(0)); + } + return safer_ecrecover(_hash, v, r, s); + } + + function safeMemoryCleaner() internal pure { + assembly { + let fmem := mload(0x40) + codecopy(fmem, codesize, sub(msize, fmem)) + } + } +} +//